4 * Client-side procedure declarations for NFSv4.
6 * Copyright (c) 2002 The Regents of the University of Michigan.
9 * Kendrick Smith <kmsmith@umich.edu>
10 * Andy Adamson <andros@umich.edu>
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
16 * 1. Redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer.
18 * 2. Redistributions in binary form must reproduce the above copyright
19 * notice, this list of conditions and the following disclaimer in the
20 * documentation and/or other materials provided with the distribution.
21 * 3. Neither the name of the University nor the names of its
22 * contributors may be used to endorse or promote products derived
23 * from this software without specific prior written permission.
25 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
26 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
27 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
28 * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
32 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
33 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
34 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
35 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
39 #include <linux/delay.h>
40 #include <linux/errno.h>
41 #include <linux/string.h>
42 #include <linux/ratelimit.h>
43 #include <linux/printk.h>
44 #include <linux/slab.h>
45 #include <linux/sunrpc/clnt.h>
46 #include <linux/nfs.h>
47 #include <linux/nfs4.h>
48 #include <linux/nfs_fs.h>
49 #include <linux/nfs_page.h>
50 #include <linux/nfs_mount.h>
51 #include <linux/namei.h>
52 #include <linux/mount.h>
53 #include <linux/module.h>
54 #include <linux/nfs_idmap.h>
55 #include <linux/xattr.h>
56 #include <linux/utsname.h>
57 #include <linux/freezer.h>
60 #include "delegation.h"
66 #include "nfs4session.h"
69 #include "nfs4trace.h"
71 #define NFSDBG_FACILITY NFSDBG_PROC
73 #define NFS4_POLL_RETRY_MIN (HZ/10)
74 #define NFS4_POLL_RETRY_MAX (15*HZ)
77 static int _nfs4_proc_open(struct nfs4_opendata
*data
);
78 static int _nfs4_recover_proc_open(struct nfs4_opendata
*data
);
79 static int nfs4_do_fsinfo(struct nfs_server
*, struct nfs_fh
*, struct nfs_fsinfo
*);
80 static int nfs4_async_handle_error(struct rpc_task
*, const struct nfs_server
*, struct nfs4_state
*);
81 static void nfs_fixup_referral_attributes(struct nfs_fattr
*fattr
);
82 static int nfs4_proc_getattr(struct nfs_server
*, struct nfs_fh
*, struct nfs_fattr
*, struct nfs4_label
*label
);
83 static int _nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
, struct nfs4_label
*label
);
84 static int nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
85 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
86 struct nfs4_state
*state
, struct nfs4_label
*ilabel
,
87 struct nfs4_label
*olabel
);
88 #ifdef CONFIG_NFS_V4_1
89 static int nfs41_test_stateid(struct nfs_server
*, nfs4_stateid
*,
91 static int nfs41_free_stateid(struct nfs_server
*, nfs4_stateid
*,
95 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
96 static inline struct nfs4_label
*
97 nfs4_label_init_security(struct inode
*dir
, struct dentry
*dentry
,
98 struct iattr
*sattr
, struct nfs4_label
*label
)
105 if (nfs_server_capable(dir
, NFS_CAP_SECURITY_LABEL
) == 0)
108 if (NFS_SERVER(dir
)->nfs_client
->cl_minorversion
< 2)
111 err
= security_dentry_init_security(dentry
, sattr
->ia_mode
,
112 &dentry
->d_name
, (void **)&label
->label
, &label
->len
);
119 nfs4_label_release_security(struct nfs4_label
*label
)
122 security_release_secctx(label
->label
, label
->len
);
124 static inline u32
*nfs4_bitmask(struct nfs_server
*server
, struct nfs4_label
*label
)
127 return server
->attr_bitmask
;
129 return server
->attr_bitmask_nl
;
132 static inline struct nfs4_label
*
133 nfs4_label_init_security(struct inode
*dir
, struct dentry
*dentry
,
134 struct iattr
*sattr
, struct nfs4_label
*l
)
137 nfs4_label_release_security(struct nfs4_label
*label
)
140 nfs4_bitmask(struct nfs_server
*server
, struct nfs4_label
*label
)
141 { return server
->attr_bitmask
; }
144 /* Prevent leaks of NFSv4 errors into userland */
145 static int nfs4_map_errors(int err
)
150 case -NFS4ERR_RESOURCE
:
151 case -NFS4ERR_LAYOUTTRYLATER
:
152 case -NFS4ERR_RECALLCONFLICT
:
154 case -NFS4ERR_WRONGSEC
:
155 case -NFS4ERR_WRONG_CRED
:
157 case -NFS4ERR_BADOWNER
:
158 case -NFS4ERR_BADNAME
:
160 case -NFS4ERR_SHARE_DENIED
:
162 case -NFS4ERR_MINOR_VERS_MISMATCH
:
163 return -EPROTONOSUPPORT
;
164 case -NFS4ERR_ACCESS
:
166 case -NFS4ERR_FILE_OPEN
:
169 dprintk("%s could not handle NFSv4 error %d\n",
177 * This is our standard bitmap for GETATTR requests.
179 const u32 nfs4_fattr_bitmap
[3] = {
181 | FATTR4_WORD0_CHANGE
184 | FATTR4_WORD0_FILEID
,
186 | FATTR4_WORD1_NUMLINKS
188 | FATTR4_WORD1_OWNER_GROUP
189 | FATTR4_WORD1_RAWDEV
190 | FATTR4_WORD1_SPACE_USED
191 | FATTR4_WORD1_TIME_ACCESS
192 | FATTR4_WORD1_TIME_METADATA
193 | FATTR4_WORD1_TIME_MODIFY
,
194 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
195 FATTR4_WORD2_SECURITY_LABEL
199 static const u32 nfs4_pnfs_open_bitmap
[3] = {
201 | FATTR4_WORD0_CHANGE
204 | FATTR4_WORD0_FILEID
,
206 | FATTR4_WORD1_NUMLINKS
208 | FATTR4_WORD1_OWNER_GROUP
209 | FATTR4_WORD1_RAWDEV
210 | FATTR4_WORD1_SPACE_USED
211 | FATTR4_WORD1_TIME_ACCESS
212 | FATTR4_WORD1_TIME_METADATA
213 | FATTR4_WORD1_TIME_MODIFY
,
214 FATTR4_WORD2_MDSTHRESHOLD
217 static const u32 nfs4_open_noattr_bitmap
[3] = {
219 | FATTR4_WORD0_CHANGE
220 | FATTR4_WORD0_FILEID
,
223 const u32 nfs4_statfs_bitmap
[3] = {
224 FATTR4_WORD0_FILES_AVAIL
225 | FATTR4_WORD0_FILES_FREE
226 | FATTR4_WORD0_FILES_TOTAL
,
227 FATTR4_WORD1_SPACE_AVAIL
228 | FATTR4_WORD1_SPACE_FREE
229 | FATTR4_WORD1_SPACE_TOTAL
232 const u32 nfs4_pathconf_bitmap
[3] = {
234 | FATTR4_WORD0_MAXNAME
,
238 const u32 nfs4_fsinfo_bitmap
[3] = { FATTR4_WORD0_MAXFILESIZE
239 | FATTR4_WORD0_MAXREAD
240 | FATTR4_WORD0_MAXWRITE
241 | FATTR4_WORD0_LEASE_TIME
,
242 FATTR4_WORD1_TIME_DELTA
243 | FATTR4_WORD1_FS_LAYOUT_TYPES
,
244 FATTR4_WORD2_LAYOUT_BLKSIZE
247 const u32 nfs4_fs_locations_bitmap
[3] = {
249 | FATTR4_WORD0_CHANGE
252 | FATTR4_WORD0_FILEID
253 | FATTR4_WORD0_FS_LOCATIONS
,
255 | FATTR4_WORD1_NUMLINKS
257 | FATTR4_WORD1_OWNER_GROUP
258 | FATTR4_WORD1_RAWDEV
259 | FATTR4_WORD1_SPACE_USED
260 | FATTR4_WORD1_TIME_ACCESS
261 | FATTR4_WORD1_TIME_METADATA
262 | FATTR4_WORD1_TIME_MODIFY
263 | FATTR4_WORD1_MOUNTED_ON_FILEID
,
266 static void nfs4_setup_readdir(u64 cookie
, __be32
*verifier
, struct dentry
*dentry
,
267 struct nfs4_readdir_arg
*readdir
)
272 readdir
->cookie
= cookie
;
273 memcpy(&readdir
->verifier
, verifier
, sizeof(readdir
->verifier
));
278 memset(&readdir
->verifier
, 0, sizeof(readdir
->verifier
));
283 * NFSv4 servers do not return entries for '.' and '..'
284 * Therefore, we fake these entries here. We let '.'
285 * have cookie 0 and '..' have cookie 1. Note that
286 * when talking to the server, we always send cookie 0
289 start
= p
= kmap_atomic(*readdir
->pages
);
292 *p
++ = xdr_one
; /* next */
293 *p
++ = xdr_zero
; /* cookie, first word */
294 *p
++ = xdr_one
; /* cookie, second word */
295 *p
++ = xdr_one
; /* entry len */
296 memcpy(p
, ".\0\0\0", 4); /* entry */
298 *p
++ = xdr_one
; /* bitmap length */
299 *p
++ = htonl(FATTR4_WORD0_FILEID
); /* bitmap */
300 *p
++ = htonl(8); /* attribute buffer length */
301 p
= xdr_encode_hyper(p
, NFS_FILEID(dentry
->d_inode
));
304 *p
++ = xdr_one
; /* next */
305 *p
++ = xdr_zero
; /* cookie, first word */
306 *p
++ = xdr_two
; /* cookie, second word */
307 *p
++ = xdr_two
; /* entry len */
308 memcpy(p
, "..\0\0", 4); /* entry */
310 *p
++ = xdr_one
; /* bitmap length */
311 *p
++ = htonl(FATTR4_WORD0_FILEID
); /* bitmap */
312 *p
++ = htonl(8); /* attribute buffer length */
313 p
= xdr_encode_hyper(p
, NFS_FILEID(dentry
->d_parent
->d_inode
));
315 readdir
->pgbase
= (char *)p
- (char *)start
;
316 readdir
->count
-= readdir
->pgbase
;
317 kunmap_atomic(start
);
320 static int nfs4_delay(struct rpc_clnt
*clnt
, long *timeout
)
327 *timeout
= NFS4_POLL_RETRY_MIN
;
328 if (*timeout
> NFS4_POLL_RETRY_MAX
)
329 *timeout
= NFS4_POLL_RETRY_MAX
;
330 freezable_schedule_timeout_killable_unsafe(*timeout
);
331 if (fatal_signal_pending(current
))
337 /* This is the error handling routine for processes that are allowed
340 static int nfs4_handle_exception(struct nfs_server
*server
, int errorcode
, struct nfs4_exception
*exception
)
342 struct nfs_client
*clp
= server
->nfs_client
;
343 struct nfs4_state
*state
= exception
->state
;
344 struct inode
*inode
= exception
->inode
;
347 exception
->retry
= 0;
351 case -NFS4ERR_OPENMODE
:
352 if (inode
&& nfs4_have_delegation(inode
, FMODE_READ
)) {
353 nfs4_inode_return_delegation(inode
);
354 exception
->retry
= 1;
359 ret
= nfs4_schedule_stateid_recovery(server
, state
);
362 goto wait_on_recovery
;
363 case -NFS4ERR_DELEG_REVOKED
:
364 case -NFS4ERR_ADMIN_REVOKED
:
365 case -NFS4ERR_BAD_STATEID
:
366 if (inode
!= NULL
&& nfs4_have_delegation(inode
, FMODE_READ
)) {
367 nfs_remove_bad_delegation(inode
);
368 exception
->retry
= 1;
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
;
387 #if defined(CONFIG_NFS_V4_1)
388 case -NFS4ERR_BADSESSION
:
389 case -NFS4ERR_BADSLOT
:
390 case -NFS4ERR_BAD_HIGH_SLOT
:
391 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
392 case -NFS4ERR_DEADSESSION
:
393 case -NFS4ERR_SEQ_FALSE_RETRY
:
394 case -NFS4ERR_SEQ_MISORDERED
:
395 dprintk("%s ERROR: %d Reset session\n", __func__
,
397 nfs4_schedule_session_recovery(clp
->cl_session
, errorcode
);
398 goto wait_on_recovery
;
399 #endif /* defined(CONFIG_NFS_V4_1) */
400 case -NFS4ERR_FILE_OPEN
:
401 if (exception
->timeout
> HZ
) {
402 /* We have retried a decent amount, time to
410 ret
= nfs4_delay(server
->client
, &exception
->timeout
);
413 case -NFS4ERR_RETRY_UNCACHED_REP
:
414 case -NFS4ERR_OLD_STATEID
:
415 exception
->retry
= 1;
417 case -NFS4ERR_BADOWNER
:
418 /* The following works around a Linux server bug! */
419 case -NFS4ERR_BADNAME
:
420 if (server
->caps
& NFS_CAP_UIDGID_NOMAP
) {
421 server
->caps
&= ~NFS_CAP_UIDGID_NOMAP
;
422 exception
->retry
= 1;
423 printk(KERN_WARNING
"NFS: v4 server %s "
424 "does not accept raw "
426 "Reenabling the idmapper.\n",
427 server
->nfs_client
->cl_hostname
);
430 /* We failed to handle the error */
431 return nfs4_map_errors(ret
);
433 ret
= nfs4_wait_clnt_recover(clp
);
435 exception
->retry
= 1;
440 * Return 'true' if 'clp' is using an rpc_client that is integrity protected
441 * or 'false' otherwise.
443 static bool _nfs4_is_integrity_protected(struct nfs_client
*clp
)
445 rpc_authflavor_t flavor
= clp
->cl_rpcclient
->cl_auth
->au_flavor
;
447 if (flavor
== RPC_AUTH_GSS_KRB5I
||
448 flavor
== RPC_AUTH_GSS_KRB5P
)
454 static void do_renew_lease(struct nfs_client
*clp
, unsigned long timestamp
)
456 spin_lock(&clp
->cl_lock
);
457 if (time_before(clp
->cl_last_renewal
,timestamp
))
458 clp
->cl_last_renewal
= timestamp
;
459 spin_unlock(&clp
->cl_lock
);
462 static void renew_lease(const struct nfs_server
*server
, unsigned long timestamp
)
464 do_renew_lease(server
->nfs_client
, timestamp
);
467 struct nfs4_call_sync_data
{
468 const struct nfs_server
*seq_server
;
469 struct nfs4_sequence_args
*seq_args
;
470 struct nfs4_sequence_res
*seq_res
;
473 static void nfs4_init_sequence(struct nfs4_sequence_args
*args
,
474 struct nfs4_sequence_res
*res
, int cache_reply
)
476 args
->sa_slot
= NULL
;
477 args
->sa_cache_this
= cache_reply
;
478 args
->sa_privileged
= 0;
483 static void nfs4_set_sequence_privileged(struct nfs4_sequence_args
*args
)
485 args
->sa_privileged
= 1;
488 static int nfs40_setup_sequence(const struct nfs_server
*server
,
489 struct nfs4_sequence_args
*args
,
490 struct nfs4_sequence_res
*res
,
491 struct rpc_task
*task
)
493 struct nfs4_slot_table
*tbl
= server
->nfs_client
->cl_slot_tbl
;
494 struct nfs4_slot
*slot
;
496 /* slot already allocated? */
497 if (res
->sr_slot
!= NULL
)
500 spin_lock(&tbl
->slot_tbl_lock
);
501 if (nfs4_slot_tbl_draining(tbl
) && !args
->sa_privileged
)
504 slot
= nfs4_alloc_slot(tbl
);
506 if (slot
== ERR_PTR(-ENOMEM
))
507 task
->tk_timeout
= HZ
>> 2;
510 spin_unlock(&tbl
->slot_tbl_lock
);
512 args
->sa_slot
= slot
;
516 rpc_call_start(task
);
520 if (args
->sa_privileged
)
521 rpc_sleep_on_priority(&tbl
->slot_tbl_waitq
, task
,
522 NULL
, RPC_PRIORITY_PRIVILEGED
);
524 rpc_sleep_on(&tbl
->slot_tbl_waitq
, task
, NULL
);
525 spin_unlock(&tbl
->slot_tbl_lock
);
529 static int nfs40_sequence_done(struct rpc_task
*task
,
530 struct nfs4_sequence_res
*res
)
532 struct nfs4_slot
*slot
= res
->sr_slot
;
533 struct nfs4_slot_table
*tbl
;
535 if (!RPC_WAS_SENT(task
))
539 spin_lock(&tbl
->slot_tbl_lock
);
540 if (!nfs41_wake_and_assign_slot(tbl
, slot
))
541 nfs4_free_slot(tbl
, slot
);
542 spin_unlock(&tbl
->slot_tbl_lock
);
549 #if defined(CONFIG_NFS_V4_1)
551 static void nfs41_sequence_free_slot(struct nfs4_sequence_res
*res
)
553 struct nfs4_session
*session
;
554 struct nfs4_slot_table
*tbl
;
555 bool send_new_highest_used_slotid
= false;
558 /* just wake up the next guy waiting since
559 * we may have not consumed a slot after all */
560 dprintk("%s: No slot\n", __func__
);
563 tbl
= res
->sr_slot
->table
;
564 session
= tbl
->session
;
566 spin_lock(&tbl
->slot_tbl_lock
);
567 /* Be nice to the server: try to ensure that the last transmitted
568 * value for highest_user_slotid <= target_highest_slotid
570 if (tbl
->highest_used_slotid
> tbl
->target_highest_slotid
)
571 send_new_highest_used_slotid
= true;
573 if (nfs41_wake_and_assign_slot(tbl
, res
->sr_slot
)) {
574 send_new_highest_used_slotid
= false;
577 nfs4_free_slot(tbl
, res
->sr_slot
);
579 if (tbl
->highest_used_slotid
!= NFS4_NO_SLOT
)
580 send_new_highest_used_slotid
= false;
582 spin_unlock(&tbl
->slot_tbl_lock
);
584 if (send_new_highest_used_slotid
)
585 nfs41_server_notify_highest_slotid_update(session
->clp
);
588 static int nfs41_sequence_done(struct rpc_task
*task
, struct nfs4_sequence_res
*res
)
590 struct nfs4_session
*session
;
591 struct nfs4_slot
*slot
;
592 struct nfs_client
*clp
;
593 bool interrupted
= false;
596 /* don't increment the sequence number if the task wasn't sent */
597 if (!RPC_WAS_SENT(task
))
601 session
= slot
->table
->session
;
603 if (slot
->interrupted
) {
604 slot
->interrupted
= 0;
608 trace_nfs4_sequence_done(session
, res
);
609 /* Check the SEQUENCE operation status */
610 switch (res
->sr_status
) {
612 /* Update the slot's sequence and clientid lease timer */
615 do_renew_lease(clp
, res
->sr_timestamp
);
616 /* Check sequence flags */
617 if (res
->sr_status_flags
!= 0)
618 nfs4_schedule_lease_recovery(clp
);
619 nfs41_update_target_slotid(slot
->table
, slot
, res
);
623 * sr_status remains 1 if an RPC level error occurred.
624 * The server may or may not have processed the sequence
626 * Mark the slot as having hosted an interrupted RPC call.
628 slot
->interrupted
= 1;
631 /* The server detected a resend of the RPC call and
632 * returned NFS4ERR_DELAY as per Section 2.10.6.2
635 dprintk("%s: slot=%u seq=%u: Operation in progress\n",
640 case -NFS4ERR_BADSLOT
:
642 * The slot id we used was probably retired. Try again
643 * using a different slot id.
646 case -NFS4ERR_SEQ_MISORDERED
:
648 * Was the last operation on this sequence interrupted?
649 * If so, retry after bumping the sequence number.
656 * Could this slot have been previously retired?
657 * If so, then the server may be expecting seq_nr = 1!
659 if (slot
->seq_nr
!= 1) {
664 case -NFS4ERR_SEQ_FALSE_RETRY
:
668 /* Just update the slot sequence no. */
672 /* The session may be reset by one of the error handlers. */
673 dprintk("%s: Error %d free the slot \n", __func__
, res
->sr_status
);
674 nfs41_sequence_free_slot(res
);
677 if (rpc_restart_call_prepare(task
)) {
683 if (!rpc_restart_call(task
))
685 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
689 static int nfs4_sequence_done(struct rpc_task
*task
,
690 struct nfs4_sequence_res
*res
)
692 if (res
->sr_slot
== NULL
)
694 if (!res
->sr_slot
->table
->session
)
695 return nfs40_sequence_done(task
, res
);
696 return nfs41_sequence_done(task
, res
);
699 int nfs41_setup_sequence(struct nfs4_session
*session
,
700 struct nfs4_sequence_args
*args
,
701 struct nfs4_sequence_res
*res
,
702 struct rpc_task
*task
)
704 struct nfs4_slot
*slot
;
705 struct nfs4_slot_table
*tbl
;
707 dprintk("--> %s\n", __func__
);
708 /* slot already allocated? */
709 if (res
->sr_slot
!= NULL
)
712 tbl
= &session
->fc_slot_table
;
714 task
->tk_timeout
= 0;
716 spin_lock(&tbl
->slot_tbl_lock
);
717 if (test_bit(NFS4_SLOT_TBL_DRAINING
, &tbl
->slot_tbl_state
) &&
718 !args
->sa_privileged
) {
719 /* The state manager will wait until the slot table is empty */
720 dprintk("%s session is draining\n", __func__
);
724 slot
= nfs4_alloc_slot(tbl
);
726 /* If out of memory, try again in 1/4 second */
727 if (slot
== ERR_PTR(-ENOMEM
))
728 task
->tk_timeout
= HZ
>> 2;
729 dprintk("<-- %s: no free slots\n", __func__
);
732 spin_unlock(&tbl
->slot_tbl_lock
);
734 args
->sa_slot
= slot
;
736 dprintk("<-- %s slotid=%u seqid=%u\n", __func__
,
737 slot
->slot_nr
, slot
->seq_nr
);
740 res
->sr_timestamp
= jiffies
;
741 res
->sr_status_flags
= 0;
743 * sr_status is only set in decode_sequence, and so will remain
744 * set to 1 if an rpc level failure occurs.
747 trace_nfs4_setup_sequence(session
, args
);
749 rpc_call_start(task
);
752 /* Privileged tasks are queued with top priority */
753 if (args
->sa_privileged
)
754 rpc_sleep_on_priority(&tbl
->slot_tbl_waitq
, task
,
755 NULL
, RPC_PRIORITY_PRIVILEGED
);
757 rpc_sleep_on(&tbl
->slot_tbl_waitq
, task
, NULL
);
758 spin_unlock(&tbl
->slot_tbl_lock
);
761 EXPORT_SYMBOL_GPL(nfs41_setup_sequence
);
763 static int nfs4_setup_sequence(const struct nfs_server
*server
,
764 struct nfs4_sequence_args
*args
,
765 struct nfs4_sequence_res
*res
,
766 struct rpc_task
*task
)
768 struct nfs4_session
*session
= nfs4_get_session(server
);
772 return nfs40_setup_sequence(server
, args
, res
, task
);
774 dprintk("--> %s clp %p session %p sr_slot %u\n",
775 __func__
, session
->clp
, session
, res
->sr_slot
?
776 res
->sr_slot
->slot_nr
: NFS4_NO_SLOT
);
778 ret
= nfs41_setup_sequence(session
, args
, res
, task
);
780 dprintk("<-- %s status=%d\n", __func__
, ret
);
784 static void nfs41_call_sync_prepare(struct rpc_task
*task
, void *calldata
)
786 struct nfs4_call_sync_data
*data
= calldata
;
787 struct nfs4_session
*session
= nfs4_get_session(data
->seq_server
);
789 dprintk("--> %s data->seq_server %p\n", __func__
, data
->seq_server
);
791 nfs41_setup_sequence(session
, data
->seq_args
, data
->seq_res
, task
);
794 static void nfs41_call_sync_done(struct rpc_task
*task
, void *calldata
)
796 struct nfs4_call_sync_data
*data
= calldata
;
798 nfs41_sequence_done(task
, data
->seq_res
);
801 static const struct rpc_call_ops nfs41_call_sync_ops
= {
802 .rpc_call_prepare
= nfs41_call_sync_prepare
,
803 .rpc_call_done
= nfs41_call_sync_done
,
806 #else /* !CONFIG_NFS_V4_1 */
808 static int nfs4_setup_sequence(const struct nfs_server
*server
,
809 struct nfs4_sequence_args
*args
,
810 struct nfs4_sequence_res
*res
,
811 struct rpc_task
*task
)
813 return nfs40_setup_sequence(server
, args
, res
, task
);
816 static int nfs4_sequence_done(struct rpc_task
*task
,
817 struct nfs4_sequence_res
*res
)
819 return nfs40_sequence_done(task
, res
);
822 #endif /* !CONFIG_NFS_V4_1 */
824 static void nfs40_call_sync_prepare(struct rpc_task
*task
, void *calldata
)
826 struct nfs4_call_sync_data
*data
= calldata
;
827 nfs4_setup_sequence(data
->seq_server
,
828 data
->seq_args
, data
->seq_res
, task
);
831 static void nfs40_call_sync_done(struct rpc_task
*task
, void *calldata
)
833 struct nfs4_call_sync_data
*data
= calldata
;
834 nfs4_sequence_done(task
, data
->seq_res
);
837 static const struct rpc_call_ops nfs40_call_sync_ops
= {
838 .rpc_call_prepare
= nfs40_call_sync_prepare
,
839 .rpc_call_done
= nfs40_call_sync_done
,
842 static int nfs4_call_sync_sequence(struct rpc_clnt
*clnt
,
843 struct nfs_server
*server
,
844 struct rpc_message
*msg
,
845 struct nfs4_sequence_args
*args
,
846 struct nfs4_sequence_res
*res
)
849 struct rpc_task
*task
;
850 struct nfs_client
*clp
= server
->nfs_client
;
851 struct nfs4_call_sync_data data
= {
852 .seq_server
= server
,
856 struct rpc_task_setup task_setup
= {
859 .callback_ops
= clp
->cl_mvops
->call_sync_ops
,
860 .callback_data
= &data
863 task
= rpc_run_task(&task_setup
);
867 ret
= task
->tk_status
;
874 int nfs4_call_sync(struct rpc_clnt
*clnt
,
875 struct nfs_server
*server
,
876 struct rpc_message
*msg
,
877 struct nfs4_sequence_args
*args
,
878 struct nfs4_sequence_res
*res
,
881 nfs4_init_sequence(args
, res
, cache_reply
);
882 return nfs4_call_sync_sequence(clnt
, server
, msg
, args
, res
);
885 static void update_changeattr(struct inode
*dir
, struct nfs4_change_info
*cinfo
)
887 struct nfs_inode
*nfsi
= NFS_I(dir
);
889 spin_lock(&dir
->i_lock
);
890 nfsi
->cache_validity
|= NFS_INO_INVALID_ATTR
|NFS_INO_INVALID_DATA
;
891 if (!cinfo
->atomic
|| cinfo
->before
!= dir
->i_version
)
892 nfs_force_lookup_revalidate(dir
);
893 dir
->i_version
= cinfo
->after
;
894 nfs_fscache_invalidate(dir
);
895 spin_unlock(&dir
->i_lock
);
898 struct nfs4_opendata
{
900 struct nfs_openargs o_arg
;
901 struct nfs_openres o_res
;
902 struct nfs_open_confirmargs c_arg
;
903 struct nfs_open_confirmres c_res
;
904 struct nfs4_string owner_name
;
905 struct nfs4_string group_name
;
906 struct nfs_fattr f_attr
;
907 struct nfs4_label
*f_label
;
909 struct dentry
*dentry
;
910 struct nfs4_state_owner
*owner
;
911 struct nfs4_state
*state
;
913 unsigned long timestamp
;
914 unsigned int rpc_done
: 1;
915 unsigned int file_created
: 1;
916 unsigned int is_recover
: 1;
921 static bool nfs4_clear_cap_atomic_open_v1(struct nfs_server
*server
,
922 int err
, struct nfs4_exception
*exception
)
926 if (!(server
->caps
& NFS_CAP_ATOMIC_OPEN_V1
))
928 server
->caps
&= ~NFS_CAP_ATOMIC_OPEN_V1
;
929 exception
->retry
= 1;
933 static enum open_claim_type4
934 nfs4_map_atomic_open_claim(struct nfs_server
*server
,
935 enum open_claim_type4 claim
)
937 if (server
->caps
& NFS_CAP_ATOMIC_OPEN_V1
)
942 case NFS4_OPEN_CLAIM_FH
:
943 return NFS4_OPEN_CLAIM_NULL
;
944 case NFS4_OPEN_CLAIM_DELEG_CUR_FH
:
945 return NFS4_OPEN_CLAIM_DELEGATE_CUR
;
946 case NFS4_OPEN_CLAIM_DELEG_PREV_FH
:
947 return NFS4_OPEN_CLAIM_DELEGATE_PREV
;
951 static void nfs4_init_opendata_res(struct nfs4_opendata
*p
)
953 p
->o_res
.f_attr
= &p
->f_attr
;
954 p
->o_res
.f_label
= p
->f_label
;
955 p
->o_res
.seqid
= p
->o_arg
.seqid
;
956 p
->c_res
.seqid
= p
->c_arg
.seqid
;
957 p
->o_res
.server
= p
->o_arg
.server
;
958 p
->o_res
.access_request
= p
->o_arg
.access
;
959 nfs_fattr_init(&p
->f_attr
);
960 nfs_fattr_init_names(&p
->f_attr
, &p
->owner_name
, &p
->group_name
);
963 static struct nfs4_opendata
*nfs4_opendata_alloc(struct dentry
*dentry
,
964 struct nfs4_state_owner
*sp
, fmode_t fmode
, int flags
,
965 const struct iattr
*attrs
,
966 struct nfs4_label
*label
,
967 enum open_claim_type4 claim
,
970 struct dentry
*parent
= dget_parent(dentry
);
971 struct inode
*dir
= parent
->d_inode
;
972 struct nfs_server
*server
= NFS_SERVER(dir
);
973 struct nfs4_opendata
*p
;
975 p
= kzalloc(sizeof(*p
), gfp_mask
);
979 p
->f_label
= nfs4_label_alloc(server
, gfp_mask
);
980 if (IS_ERR(p
->f_label
))
983 p
->o_arg
.seqid
= nfs_alloc_seqid(&sp
->so_seqid
, gfp_mask
);
984 if (p
->o_arg
.seqid
== NULL
)
986 nfs_sb_active(dentry
->d_sb
);
987 p
->dentry
= dget(dentry
);
990 atomic_inc(&sp
->so_count
);
991 p
->o_arg
.open_flags
= flags
;
992 p
->o_arg
.fmode
= fmode
& (FMODE_READ
|FMODE_WRITE
);
993 /* don't put an ACCESS op in OPEN compound if O_EXCL, because ACCESS
994 * will return permission denied for all bits until close */
995 if (!(flags
& O_EXCL
)) {
996 /* ask server to check for all possible rights as results
998 p
->o_arg
.access
= NFS4_ACCESS_READ
| NFS4_ACCESS_MODIFY
|
999 NFS4_ACCESS_EXTEND
| NFS4_ACCESS_EXECUTE
;
1001 p
->o_arg
.clientid
= server
->nfs_client
->cl_clientid
;
1002 p
->o_arg
.id
.create_time
= ktime_to_ns(sp
->so_seqid
.create_time
);
1003 p
->o_arg
.id
.uniquifier
= sp
->so_seqid
.owner_id
;
1004 p
->o_arg
.name
= &dentry
->d_name
;
1005 p
->o_arg
.server
= server
;
1006 p
->o_arg
.bitmask
= nfs4_bitmask(server
, label
);
1007 p
->o_arg
.open_bitmap
= &nfs4_fattr_bitmap
[0];
1008 p
->o_arg
.label
= label
;
1009 p
->o_arg
.claim
= nfs4_map_atomic_open_claim(server
, claim
);
1010 switch (p
->o_arg
.claim
) {
1011 case NFS4_OPEN_CLAIM_NULL
:
1012 case NFS4_OPEN_CLAIM_DELEGATE_CUR
:
1013 case NFS4_OPEN_CLAIM_DELEGATE_PREV
:
1014 p
->o_arg
.fh
= NFS_FH(dir
);
1016 case NFS4_OPEN_CLAIM_PREVIOUS
:
1017 case NFS4_OPEN_CLAIM_FH
:
1018 case NFS4_OPEN_CLAIM_DELEG_CUR_FH
:
1019 case NFS4_OPEN_CLAIM_DELEG_PREV_FH
:
1020 p
->o_arg
.fh
= NFS_FH(dentry
->d_inode
);
1022 if (attrs
!= NULL
&& attrs
->ia_valid
!= 0) {
1025 p
->o_arg
.u
.attrs
= &p
->attrs
;
1026 memcpy(&p
->attrs
, attrs
, sizeof(p
->attrs
));
1029 verf
[1] = current
->pid
;
1030 memcpy(p
->o_arg
.u
.verifier
.data
, verf
,
1031 sizeof(p
->o_arg
.u
.verifier
.data
));
1033 p
->c_arg
.fh
= &p
->o_res
.fh
;
1034 p
->c_arg
.stateid
= &p
->o_res
.stateid
;
1035 p
->c_arg
.seqid
= p
->o_arg
.seqid
;
1036 nfs4_init_opendata_res(p
);
1037 kref_init(&p
->kref
);
1041 nfs4_label_free(p
->f_label
);
1049 static void nfs4_opendata_free(struct kref
*kref
)
1051 struct nfs4_opendata
*p
= container_of(kref
,
1052 struct nfs4_opendata
, kref
);
1053 struct super_block
*sb
= p
->dentry
->d_sb
;
1055 nfs_free_seqid(p
->o_arg
.seqid
);
1056 if (p
->state
!= NULL
)
1057 nfs4_put_open_state(p
->state
);
1058 nfs4_put_state_owner(p
->owner
);
1060 nfs4_label_free(p
->f_label
);
1064 nfs_sb_deactive(sb
);
1065 nfs_fattr_free_names(&p
->f_attr
);
1069 static void nfs4_opendata_put(struct nfs4_opendata
*p
)
1072 kref_put(&p
->kref
, nfs4_opendata_free
);
1075 static int nfs4_wait_for_completion_rpc_task(struct rpc_task
*task
)
1079 ret
= rpc_wait_for_completion_task(task
);
1083 static int can_open_cached(struct nfs4_state
*state
, fmode_t mode
, int open_mode
)
1087 if (open_mode
& (O_EXCL
|O_TRUNC
))
1089 switch (mode
& (FMODE_READ
|FMODE_WRITE
)) {
1091 ret
|= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
) != 0
1092 && state
->n_rdonly
!= 0;
1095 ret
|= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
) != 0
1096 && state
->n_wronly
!= 0;
1098 case FMODE_READ
|FMODE_WRITE
:
1099 ret
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
) != 0
1100 && state
->n_rdwr
!= 0;
1106 static int can_open_delegated(struct nfs_delegation
*delegation
, fmode_t fmode
)
1108 if (delegation
== NULL
)
1110 if ((delegation
->type
& fmode
) != fmode
)
1112 if (test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
))
1114 if (test_bit(NFS_DELEGATION_RETURNING
, &delegation
->flags
))
1116 nfs_mark_delegation_referenced(delegation
);
1120 static void update_open_stateflags(struct nfs4_state
*state
, fmode_t fmode
)
1129 case FMODE_READ
|FMODE_WRITE
:
1132 nfs4_state_set_mode_locked(state
, state
->state
| fmode
);
1135 static void nfs_set_open_stateid_locked(struct nfs4_state
*state
, nfs4_stateid
*stateid
, fmode_t fmode
)
1137 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1138 nfs4_stateid_copy(&state
->stateid
, stateid
);
1139 nfs4_stateid_copy(&state
->open_stateid
, stateid
);
1140 set_bit(NFS_OPEN_STATE
, &state
->flags
);
1143 set_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1146 set_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1148 case FMODE_READ
|FMODE_WRITE
:
1149 set_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1153 static void nfs_set_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*stateid
, fmode_t fmode
)
1155 write_seqlock(&state
->seqlock
);
1156 nfs_set_open_stateid_locked(state
, stateid
, fmode
);
1157 write_sequnlock(&state
->seqlock
);
1160 static void __update_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*open_stateid
, const nfs4_stateid
*deleg_stateid
, fmode_t fmode
)
1163 * Protect the call to nfs4_state_set_mode_locked and
1164 * serialise the stateid update
1166 write_seqlock(&state
->seqlock
);
1167 if (deleg_stateid
!= NULL
) {
1168 nfs4_stateid_copy(&state
->stateid
, deleg_stateid
);
1169 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1171 if (open_stateid
!= NULL
)
1172 nfs_set_open_stateid_locked(state
, open_stateid
, fmode
);
1173 write_sequnlock(&state
->seqlock
);
1174 spin_lock(&state
->owner
->so_lock
);
1175 update_open_stateflags(state
, fmode
);
1176 spin_unlock(&state
->owner
->so_lock
);
1179 static int update_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*open_stateid
, nfs4_stateid
*delegation
, fmode_t fmode
)
1181 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1182 struct nfs_delegation
*deleg_cur
;
1185 fmode
&= (FMODE_READ
|FMODE_WRITE
);
1188 deleg_cur
= rcu_dereference(nfsi
->delegation
);
1189 if (deleg_cur
== NULL
)
1192 spin_lock(&deleg_cur
->lock
);
1193 if (rcu_dereference(nfsi
->delegation
) != deleg_cur
||
1194 test_bit(NFS_DELEGATION_RETURNING
, &deleg_cur
->flags
) ||
1195 (deleg_cur
->type
& fmode
) != fmode
)
1196 goto no_delegation_unlock
;
1198 if (delegation
== NULL
)
1199 delegation
= &deleg_cur
->stateid
;
1200 else if (!nfs4_stateid_match(&deleg_cur
->stateid
, delegation
))
1201 goto no_delegation_unlock
;
1203 nfs_mark_delegation_referenced(deleg_cur
);
1204 __update_open_stateid(state
, open_stateid
, &deleg_cur
->stateid
, fmode
);
1206 no_delegation_unlock
:
1207 spin_unlock(&deleg_cur
->lock
);
1211 if (!ret
&& open_stateid
!= NULL
) {
1212 __update_open_stateid(state
, open_stateid
, NULL
, fmode
);
1220 static void nfs4_return_incompatible_delegation(struct inode
*inode
, fmode_t fmode
)
1222 struct nfs_delegation
*delegation
;
1225 delegation
= rcu_dereference(NFS_I(inode
)->delegation
);
1226 if (delegation
== NULL
|| (delegation
->type
& fmode
) == fmode
) {
1231 nfs4_inode_return_delegation(inode
);
1234 static struct nfs4_state
*nfs4_try_open_cached(struct nfs4_opendata
*opendata
)
1236 struct nfs4_state
*state
= opendata
->state
;
1237 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1238 struct nfs_delegation
*delegation
;
1239 int open_mode
= opendata
->o_arg
.open_flags
;
1240 fmode_t fmode
= opendata
->o_arg
.fmode
;
1241 nfs4_stateid stateid
;
1245 if (can_open_cached(state
, fmode
, open_mode
)) {
1246 spin_lock(&state
->owner
->so_lock
);
1247 if (can_open_cached(state
, fmode
, open_mode
)) {
1248 update_open_stateflags(state
, fmode
);
1249 spin_unlock(&state
->owner
->so_lock
);
1250 goto out_return_state
;
1252 spin_unlock(&state
->owner
->so_lock
);
1255 delegation
= rcu_dereference(nfsi
->delegation
);
1256 if (!can_open_delegated(delegation
, fmode
)) {
1260 /* Save the delegation */
1261 nfs4_stateid_copy(&stateid
, &delegation
->stateid
);
1263 nfs_release_seqid(opendata
->o_arg
.seqid
);
1264 if (!opendata
->is_recover
) {
1265 ret
= nfs_may_open(state
->inode
, state
->owner
->so_cred
, open_mode
);
1271 /* Try to update the stateid using the delegation */
1272 if (update_open_stateid(state
, NULL
, &stateid
, fmode
))
1273 goto out_return_state
;
1276 return ERR_PTR(ret
);
1278 atomic_inc(&state
->count
);
1283 nfs4_opendata_check_deleg(struct nfs4_opendata
*data
, struct nfs4_state
*state
)
1285 struct nfs_client
*clp
= NFS_SERVER(state
->inode
)->nfs_client
;
1286 struct nfs_delegation
*delegation
;
1287 int delegation_flags
= 0;
1290 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
1292 delegation_flags
= delegation
->flags
;
1294 if (data
->o_arg
.claim
== NFS4_OPEN_CLAIM_DELEGATE_CUR
) {
1295 pr_err_ratelimited("NFS: Broken NFSv4 server %s is "
1296 "returning a delegation for "
1297 "OPEN(CLAIM_DELEGATE_CUR)\n",
1299 } else if ((delegation_flags
& 1UL<<NFS_DELEGATION_NEED_RECLAIM
) == 0)
1300 nfs_inode_set_delegation(state
->inode
,
1301 data
->owner
->so_cred
,
1304 nfs_inode_reclaim_delegation(state
->inode
,
1305 data
->owner
->so_cred
,
1310 * Check the inode attributes against the CLAIM_PREVIOUS returned attributes
1311 * and update the nfs4_state.
1313 static struct nfs4_state
*
1314 _nfs4_opendata_reclaim_to_nfs4_state(struct nfs4_opendata
*data
)
1316 struct inode
*inode
= data
->state
->inode
;
1317 struct nfs4_state
*state
= data
->state
;
1320 if (!data
->rpc_done
) {
1321 ret
= data
->rpc_status
;
1326 if (!(data
->f_attr
.valid
& NFS_ATTR_FATTR_TYPE
) ||
1327 !(data
->f_attr
.valid
& NFS_ATTR_FATTR_FILEID
) ||
1328 !(data
->f_attr
.valid
& NFS_ATTR_FATTR_CHANGE
))
1332 state
= nfs4_get_open_state(inode
, data
->owner
);
1336 ret
= nfs_refresh_inode(inode
, &data
->f_attr
);
1340 nfs_setsecurity(inode
, &data
->f_attr
, data
->f_label
);
1342 if (data
->o_res
.delegation_type
!= 0)
1343 nfs4_opendata_check_deleg(data
, state
);
1344 update_open_stateid(state
, &data
->o_res
.stateid
, NULL
,
1349 return ERR_PTR(ret
);
1353 static struct nfs4_state
*
1354 _nfs4_opendata_to_nfs4_state(struct nfs4_opendata
*data
)
1356 struct inode
*inode
;
1357 struct nfs4_state
*state
= NULL
;
1360 if (!data
->rpc_done
) {
1361 state
= nfs4_try_open_cached(data
);
1366 if (!(data
->f_attr
.valid
& NFS_ATTR_FATTR
))
1368 inode
= nfs_fhget(data
->dir
->d_sb
, &data
->o_res
.fh
, &data
->f_attr
, data
->f_label
);
1369 ret
= PTR_ERR(inode
);
1373 state
= nfs4_get_open_state(inode
, data
->owner
);
1376 if (data
->o_res
.delegation_type
!= 0)
1377 nfs4_opendata_check_deleg(data
, state
);
1378 update_open_stateid(state
, &data
->o_res
.stateid
, NULL
,
1382 nfs_release_seqid(data
->o_arg
.seqid
);
1387 return ERR_PTR(ret
);
1390 static struct nfs4_state
*
1391 nfs4_opendata_to_nfs4_state(struct nfs4_opendata
*data
)
1393 if (data
->o_arg
.claim
== NFS4_OPEN_CLAIM_PREVIOUS
)
1394 return _nfs4_opendata_reclaim_to_nfs4_state(data
);
1395 return _nfs4_opendata_to_nfs4_state(data
);
1398 static struct nfs_open_context
*nfs4_state_find_open_context(struct nfs4_state
*state
)
1400 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1401 struct nfs_open_context
*ctx
;
1403 spin_lock(&state
->inode
->i_lock
);
1404 list_for_each_entry(ctx
, &nfsi
->open_files
, list
) {
1405 if (ctx
->state
!= state
)
1407 get_nfs_open_context(ctx
);
1408 spin_unlock(&state
->inode
->i_lock
);
1411 spin_unlock(&state
->inode
->i_lock
);
1412 return ERR_PTR(-ENOENT
);
1415 static struct nfs4_opendata
*nfs4_open_recoverdata_alloc(struct nfs_open_context
*ctx
,
1416 struct nfs4_state
*state
, enum open_claim_type4 claim
)
1418 struct nfs4_opendata
*opendata
;
1420 opendata
= nfs4_opendata_alloc(ctx
->dentry
, state
->owner
, 0, 0,
1421 NULL
, NULL
, claim
, GFP_NOFS
);
1422 if (opendata
== NULL
)
1423 return ERR_PTR(-ENOMEM
);
1424 opendata
->state
= state
;
1425 atomic_inc(&state
->count
);
1429 static int nfs4_open_recover_helper(struct nfs4_opendata
*opendata
, fmode_t fmode
, struct nfs4_state
**res
)
1431 struct nfs4_state
*newstate
;
1434 opendata
->o_arg
.open_flags
= 0;
1435 opendata
->o_arg
.fmode
= fmode
;
1436 memset(&opendata
->o_res
, 0, sizeof(opendata
->o_res
));
1437 memset(&opendata
->c_res
, 0, sizeof(opendata
->c_res
));
1438 nfs4_init_opendata_res(opendata
);
1439 ret
= _nfs4_recover_proc_open(opendata
);
1442 newstate
= nfs4_opendata_to_nfs4_state(opendata
);
1443 if (IS_ERR(newstate
))
1444 return PTR_ERR(newstate
);
1445 nfs4_close_state(newstate
, fmode
);
1450 static int nfs4_open_recover(struct nfs4_opendata
*opendata
, struct nfs4_state
*state
)
1452 struct nfs4_state
*newstate
;
1455 /* memory barrier prior to reading state->n_* */
1456 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1457 clear_bit(NFS_OPEN_STATE
, &state
->flags
);
1459 if (state
->n_rdwr
!= 0) {
1460 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1461 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
|FMODE_WRITE
, &newstate
);
1464 if (newstate
!= state
)
1467 if (state
->n_wronly
!= 0) {
1468 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1469 ret
= nfs4_open_recover_helper(opendata
, FMODE_WRITE
, &newstate
);
1472 if (newstate
!= state
)
1475 if (state
->n_rdonly
!= 0) {
1476 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1477 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
, &newstate
);
1480 if (newstate
!= state
)
1484 * We may have performed cached opens for all three recoveries.
1485 * Check if we need to update the current stateid.
1487 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0 &&
1488 !nfs4_stateid_match(&state
->stateid
, &state
->open_stateid
)) {
1489 write_seqlock(&state
->seqlock
);
1490 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1491 nfs4_stateid_copy(&state
->stateid
, &state
->open_stateid
);
1492 write_sequnlock(&state
->seqlock
);
1499 * reclaim state on the server after a reboot.
1501 static int _nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1503 struct nfs_delegation
*delegation
;
1504 struct nfs4_opendata
*opendata
;
1505 fmode_t delegation_type
= 0;
1508 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
,
1509 NFS4_OPEN_CLAIM_PREVIOUS
);
1510 if (IS_ERR(opendata
))
1511 return PTR_ERR(opendata
);
1513 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
1514 if (delegation
!= NULL
&& test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
) != 0)
1515 delegation_type
= delegation
->type
;
1517 opendata
->o_arg
.u
.delegation_type
= delegation_type
;
1518 status
= nfs4_open_recover(opendata
, state
);
1519 nfs4_opendata_put(opendata
);
1523 static int nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1525 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1526 struct nfs4_exception exception
= { };
1529 err
= _nfs4_do_open_reclaim(ctx
, state
);
1530 trace_nfs4_open_reclaim(ctx
, 0, err
);
1531 if (nfs4_clear_cap_atomic_open_v1(server
, err
, &exception
))
1533 if (err
!= -NFS4ERR_DELAY
)
1535 nfs4_handle_exception(server
, err
, &exception
);
1536 } while (exception
.retry
);
1540 static int nfs4_open_reclaim(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1542 struct nfs_open_context
*ctx
;
1545 ctx
= nfs4_state_find_open_context(state
);
1548 ret
= nfs4_do_open_reclaim(ctx
, state
);
1549 put_nfs_open_context(ctx
);
1553 static int nfs4_handle_delegation_recall_error(struct nfs_server
*server
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
, int err
)
1557 printk(KERN_ERR
"NFS: %s: unhandled error "
1558 "%d.\n", __func__
, err
);
1563 case -NFS4ERR_BADSESSION
:
1564 case -NFS4ERR_BADSLOT
:
1565 case -NFS4ERR_BAD_HIGH_SLOT
:
1566 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
1567 case -NFS4ERR_DEADSESSION
:
1568 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1569 nfs4_schedule_session_recovery(server
->nfs_client
->cl_session
, err
);
1571 case -NFS4ERR_STALE_CLIENTID
:
1572 case -NFS4ERR_STALE_STATEID
:
1573 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1574 case -NFS4ERR_EXPIRED
:
1575 /* Don't recall a delegation if it was lost */
1576 nfs4_schedule_lease_recovery(server
->nfs_client
);
1578 case -NFS4ERR_DELEG_REVOKED
:
1579 case -NFS4ERR_ADMIN_REVOKED
:
1580 case -NFS4ERR_BAD_STATEID
:
1581 case -NFS4ERR_OPENMODE
:
1582 nfs_inode_find_state_and_recover(state
->inode
,
1584 nfs4_schedule_stateid_recovery(server
, state
);
1586 case -NFS4ERR_DELAY
:
1587 case -NFS4ERR_GRACE
:
1588 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1592 case -NFS4ERR_DENIED
:
1593 /* kill_proc(fl->fl_pid, SIGLOST, 1); */
1599 int nfs4_open_delegation_recall(struct nfs_open_context
*ctx
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
1601 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1602 struct nfs4_opendata
*opendata
;
1605 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
,
1606 NFS4_OPEN_CLAIM_DELEG_CUR_FH
);
1607 if (IS_ERR(opendata
))
1608 return PTR_ERR(opendata
);
1609 nfs4_stateid_copy(&opendata
->o_arg
.u
.delegation
, stateid
);
1610 err
= nfs4_open_recover(opendata
, state
);
1611 nfs4_opendata_put(opendata
);
1612 return nfs4_handle_delegation_recall_error(server
, state
, stateid
, err
);
1615 static void nfs4_open_confirm_prepare(struct rpc_task
*task
, void *calldata
)
1617 struct nfs4_opendata
*data
= calldata
;
1619 nfs40_setup_sequence(data
->o_arg
.server
, &data
->o_arg
.seq_args
,
1620 &data
->o_res
.seq_res
, task
);
1623 static void nfs4_open_confirm_done(struct rpc_task
*task
, void *calldata
)
1625 struct nfs4_opendata
*data
= calldata
;
1627 nfs40_sequence_done(task
, &data
->o_res
.seq_res
);
1629 data
->rpc_status
= task
->tk_status
;
1630 if (data
->rpc_status
== 0) {
1631 nfs4_stateid_copy(&data
->o_res
.stateid
, &data
->c_res
.stateid
);
1632 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
1633 renew_lease(data
->o_res
.server
, data
->timestamp
);
1638 static void nfs4_open_confirm_release(void *calldata
)
1640 struct nfs4_opendata
*data
= calldata
;
1641 struct nfs4_state
*state
= NULL
;
1643 /* If this request hasn't been cancelled, do nothing */
1644 if (data
->cancelled
== 0)
1646 /* In case of error, no cleanup! */
1647 if (!data
->rpc_done
)
1649 state
= nfs4_opendata_to_nfs4_state(data
);
1651 nfs4_close_state(state
, data
->o_arg
.fmode
);
1653 nfs4_opendata_put(data
);
1656 static const struct rpc_call_ops nfs4_open_confirm_ops
= {
1657 .rpc_call_prepare
= nfs4_open_confirm_prepare
,
1658 .rpc_call_done
= nfs4_open_confirm_done
,
1659 .rpc_release
= nfs4_open_confirm_release
,
1663 * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata
1665 static int _nfs4_proc_open_confirm(struct nfs4_opendata
*data
)
1667 struct nfs_server
*server
= NFS_SERVER(data
->dir
->d_inode
);
1668 struct rpc_task
*task
;
1669 struct rpc_message msg
= {
1670 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_CONFIRM
],
1671 .rpc_argp
= &data
->c_arg
,
1672 .rpc_resp
= &data
->c_res
,
1673 .rpc_cred
= data
->owner
->so_cred
,
1675 struct rpc_task_setup task_setup_data
= {
1676 .rpc_client
= server
->client
,
1677 .rpc_message
= &msg
,
1678 .callback_ops
= &nfs4_open_confirm_ops
,
1679 .callback_data
= data
,
1680 .workqueue
= nfsiod_workqueue
,
1681 .flags
= RPC_TASK_ASYNC
,
1685 nfs4_init_sequence(&data
->o_arg
.seq_args
, &data
->o_res
.seq_res
, 1);
1686 kref_get(&data
->kref
);
1688 data
->rpc_status
= 0;
1689 data
->timestamp
= jiffies
;
1690 task
= rpc_run_task(&task_setup_data
);
1692 return PTR_ERR(task
);
1693 status
= nfs4_wait_for_completion_rpc_task(task
);
1695 data
->cancelled
= 1;
1698 status
= data
->rpc_status
;
1703 static void nfs4_open_prepare(struct rpc_task
*task
, void *calldata
)
1705 struct nfs4_opendata
*data
= calldata
;
1706 struct nfs4_state_owner
*sp
= data
->owner
;
1707 struct nfs_client
*clp
= sp
->so_server
->nfs_client
;
1709 if (nfs_wait_on_sequence(data
->o_arg
.seqid
, task
) != 0)
1712 * Check if we still need to send an OPEN call, or if we can use
1713 * a delegation instead.
1715 if (data
->state
!= NULL
) {
1716 struct nfs_delegation
*delegation
;
1718 if (can_open_cached(data
->state
, data
->o_arg
.fmode
, data
->o_arg
.open_flags
))
1721 delegation
= rcu_dereference(NFS_I(data
->state
->inode
)->delegation
);
1722 if (data
->o_arg
.claim
!= NFS4_OPEN_CLAIM_DELEGATE_CUR
&&
1723 data
->o_arg
.claim
!= NFS4_OPEN_CLAIM_DELEG_CUR_FH
&&
1724 can_open_delegated(delegation
, data
->o_arg
.fmode
))
1725 goto unlock_no_action
;
1728 /* Update client id. */
1729 data
->o_arg
.clientid
= clp
->cl_clientid
;
1730 switch (data
->o_arg
.claim
) {
1731 case NFS4_OPEN_CLAIM_PREVIOUS
:
1732 case NFS4_OPEN_CLAIM_DELEG_CUR_FH
:
1733 case NFS4_OPEN_CLAIM_DELEG_PREV_FH
:
1734 data
->o_arg
.open_bitmap
= &nfs4_open_noattr_bitmap
[0];
1735 case NFS4_OPEN_CLAIM_FH
:
1736 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_NOATTR
];
1737 nfs_copy_fh(&data
->o_res
.fh
, data
->o_arg
.fh
);
1739 data
->timestamp
= jiffies
;
1740 if (nfs4_setup_sequence(data
->o_arg
.server
,
1741 &data
->o_arg
.seq_args
,
1742 &data
->o_res
.seq_res
,
1744 nfs_release_seqid(data
->o_arg
.seqid
);
1746 /* Set the create mode (note dependency on the session type) */
1747 data
->o_arg
.createmode
= NFS4_CREATE_UNCHECKED
;
1748 if (data
->o_arg
.open_flags
& O_EXCL
) {
1749 data
->o_arg
.createmode
= NFS4_CREATE_EXCLUSIVE
;
1750 if (nfs4_has_persistent_session(clp
))
1751 data
->o_arg
.createmode
= NFS4_CREATE_GUARDED
;
1752 else if (clp
->cl_mvops
->minor_version
> 0)
1753 data
->o_arg
.createmode
= NFS4_CREATE_EXCLUSIVE4_1
;
1759 task
->tk_action
= NULL
;
1761 nfs4_sequence_done(task
, &data
->o_res
.seq_res
);
1764 static void nfs4_open_done(struct rpc_task
*task
, void *calldata
)
1766 struct nfs4_opendata
*data
= calldata
;
1768 data
->rpc_status
= task
->tk_status
;
1770 if (!nfs4_sequence_done(task
, &data
->o_res
.seq_res
))
1773 if (task
->tk_status
== 0) {
1774 if (data
->o_res
.f_attr
->valid
& NFS_ATTR_FATTR_TYPE
) {
1775 switch (data
->o_res
.f_attr
->mode
& S_IFMT
) {
1779 data
->rpc_status
= -ELOOP
;
1782 data
->rpc_status
= -EISDIR
;
1785 data
->rpc_status
= -ENOTDIR
;
1788 renew_lease(data
->o_res
.server
, data
->timestamp
);
1789 if (!(data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
))
1790 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
1795 static void nfs4_open_release(void *calldata
)
1797 struct nfs4_opendata
*data
= calldata
;
1798 struct nfs4_state
*state
= NULL
;
1800 /* If this request hasn't been cancelled, do nothing */
1801 if (data
->cancelled
== 0)
1803 /* In case of error, no cleanup! */
1804 if (data
->rpc_status
!= 0 || !data
->rpc_done
)
1806 /* In case we need an open_confirm, no cleanup! */
1807 if (data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
)
1809 state
= nfs4_opendata_to_nfs4_state(data
);
1811 nfs4_close_state(state
, data
->o_arg
.fmode
);
1813 nfs4_opendata_put(data
);
1816 static const struct rpc_call_ops nfs4_open_ops
= {
1817 .rpc_call_prepare
= nfs4_open_prepare
,
1818 .rpc_call_done
= nfs4_open_done
,
1819 .rpc_release
= nfs4_open_release
,
1822 static int nfs4_run_open_task(struct nfs4_opendata
*data
, int isrecover
)
1824 struct inode
*dir
= data
->dir
->d_inode
;
1825 struct nfs_server
*server
= NFS_SERVER(dir
);
1826 struct nfs_openargs
*o_arg
= &data
->o_arg
;
1827 struct nfs_openres
*o_res
= &data
->o_res
;
1828 struct rpc_task
*task
;
1829 struct rpc_message msg
= {
1830 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN
],
1833 .rpc_cred
= data
->owner
->so_cred
,
1835 struct rpc_task_setup task_setup_data
= {
1836 .rpc_client
= server
->client
,
1837 .rpc_message
= &msg
,
1838 .callback_ops
= &nfs4_open_ops
,
1839 .callback_data
= data
,
1840 .workqueue
= nfsiod_workqueue
,
1841 .flags
= RPC_TASK_ASYNC
,
1845 nfs4_init_sequence(&o_arg
->seq_args
, &o_res
->seq_res
, 1);
1846 kref_get(&data
->kref
);
1848 data
->rpc_status
= 0;
1849 data
->cancelled
= 0;
1850 data
->is_recover
= 0;
1852 nfs4_set_sequence_privileged(&o_arg
->seq_args
);
1853 data
->is_recover
= 1;
1855 task
= rpc_run_task(&task_setup_data
);
1857 return PTR_ERR(task
);
1858 status
= nfs4_wait_for_completion_rpc_task(task
);
1860 data
->cancelled
= 1;
1863 status
= data
->rpc_status
;
1869 static int _nfs4_recover_proc_open(struct nfs4_opendata
*data
)
1871 struct inode
*dir
= data
->dir
->d_inode
;
1872 struct nfs_openres
*o_res
= &data
->o_res
;
1875 status
= nfs4_run_open_task(data
, 1);
1876 if (status
!= 0 || !data
->rpc_done
)
1879 nfs_fattr_map_and_free_names(NFS_SERVER(dir
), &data
->f_attr
);
1881 if (o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
1882 status
= _nfs4_proc_open_confirm(data
);
1890 static int nfs4_opendata_access(struct rpc_cred
*cred
,
1891 struct nfs4_opendata
*opendata
,
1892 struct nfs4_state
*state
, fmode_t fmode
,
1895 struct nfs_access_entry cache
;
1898 /* access call failed or for some reason the server doesn't
1899 * support any access modes -- defer access call until later */
1900 if (opendata
->o_res
.access_supported
== 0)
1904 /* don't check MAY_WRITE - a newly created file may not have
1905 * write mode bits, but POSIX allows the creating process to write.
1906 * use openflags to check for exec, because fmode won't
1907 * always have FMODE_EXEC set when file open for exec. */
1908 if (openflags
& __FMODE_EXEC
) {
1909 /* ONLY check for exec rights */
1911 } else if (fmode
& FMODE_READ
)
1915 cache
.jiffies
= jiffies
;
1916 nfs_access_set_mask(&cache
, opendata
->o_res
.access_result
);
1917 nfs_access_add_cache(state
->inode
, &cache
);
1919 if ((mask
& ~cache
.mask
& (MAY_READ
| MAY_EXEC
)) == 0)
1922 /* even though OPEN succeeded, access is denied. Close the file */
1923 nfs4_close_state(state
, fmode
);
1928 * Note: On error, nfs4_proc_open will free the struct nfs4_opendata
1930 static int _nfs4_proc_open(struct nfs4_opendata
*data
)
1932 struct inode
*dir
= data
->dir
->d_inode
;
1933 struct nfs_server
*server
= NFS_SERVER(dir
);
1934 struct nfs_openargs
*o_arg
= &data
->o_arg
;
1935 struct nfs_openres
*o_res
= &data
->o_res
;
1938 status
= nfs4_run_open_task(data
, 0);
1939 if (!data
->rpc_done
)
1942 if (status
== -NFS4ERR_BADNAME
&&
1943 !(o_arg
->open_flags
& O_CREAT
))
1948 nfs_fattr_map_and_free_names(server
, &data
->f_attr
);
1950 if (o_arg
->open_flags
& O_CREAT
) {
1951 update_changeattr(dir
, &o_res
->cinfo
);
1952 if (o_arg
->open_flags
& O_EXCL
)
1953 data
->file_created
= 1;
1954 else if (o_res
->cinfo
.before
!= o_res
->cinfo
.after
)
1955 data
->file_created
= 1;
1957 if ((o_res
->rflags
& NFS4_OPEN_RESULT_LOCKTYPE_POSIX
) == 0)
1958 server
->caps
&= ~NFS_CAP_POSIX_LOCK
;
1959 if(o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
1960 status
= _nfs4_proc_open_confirm(data
);
1964 if (!(o_res
->f_attr
->valid
& NFS_ATTR_FATTR
))
1965 _nfs4_proc_getattr(server
, &o_res
->fh
, o_res
->f_attr
, o_res
->f_label
);
1969 static int nfs4_recover_expired_lease(struct nfs_server
*server
)
1971 return nfs4_client_recover_expired_lease(server
->nfs_client
);
1976 * reclaim state on the server after a network partition.
1977 * Assumes caller holds the appropriate lock
1979 static int _nfs4_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1981 struct nfs4_opendata
*opendata
;
1984 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
,
1985 NFS4_OPEN_CLAIM_FH
);
1986 if (IS_ERR(opendata
))
1987 return PTR_ERR(opendata
);
1988 ret
= nfs4_open_recover(opendata
, state
);
1990 d_drop(ctx
->dentry
);
1991 nfs4_opendata_put(opendata
);
1995 static int nfs4_do_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1997 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1998 struct nfs4_exception exception
= { };
2002 err
= _nfs4_open_expired(ctx
, state
);
2003 trace_nfs4_open_expired(ctx
, 0, err
);
2004 if (nfs4_clear_cap_atomic_open_v1(server
, err
, &exception
))
2009 case -NFS4ERR_GRACE
:
2010 case -NFS4ERR_DELAY
:
2011 nfs4_handle_exception(server
, err
, &exception
);
2014 } while (exception
.retry
);
2019 static int nfs4_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
2021 struct nfs_open_context
*ctx
;
2024 ctx
= nfs4_state_find_open_context(state
);
2027 ret
= nfs4_do_open_expired(ctx
, state
);
2028 put_nfs_open_context(ctx
);
2032 #if defined(CONFIG_NFS_V4_1)
2033 static void nfs41_clear_delegation_stateid(struct nfs4_state
*state
)
2035 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2036 nfs4_stateid
*stateid
= &state
->stateid
;
2037 struct nfs_delegation
*delegation
;
2038 struct rpc_cred
*cred
= NULL
;
2039 int status
= -NFS4ERR_BAD_STATEID
;
2041 /* If a state reset has been done, test_stateid is unneeded */
2042 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
2045 /* Get the delegation credential for use by test/free_stateid */
2047 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
2048 if (delegation
!= NULL
&&
2049 nfs4_stateid_match(&delegation
->stateid
, stateid
)) {
2050 cred
= get_rpccred(delegation
->cred
);
2052 status
= nfs41_test_stateid(server
, stateid
, cred
);
2053 trace_nfs4_test_delegation_stateid(state
, NULL
, status
);
2057 if (status
!= NFS_OK
) {
2058 /* Free the stateid unless the server explicitly
2059 * informs us the stateid is unrecognized. */
2060 if (status
!= -NFS4ERR_BAD_STATEID
)
2061 nfs41_free_stateid(server
, stateid
, cred
);
2062 nfs_remove_bad_delegation(state
->inode
);
2064 write_seqlock(&state
->seqlock
);
2065 nfs4_stateid_copy(&state
->stateid
, &state
->open_stateid
);
2066 write_sequnlock(&state
->seqlock
);
2067 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
2075 * nfs41_check_open_stateid - possibly free an open stateid
2077 * @state: NFSv4 state for an inode
2079 * Returns NFS_OK if recovery for this stateid is now finished.
2080 * Otherwise a negative NFS4ERR value is returned.
2082 static int nfs41_check_open_stateid(struct nfs4_state
*state
)
2084 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2085 nfs4_stateid
*stateid
= &state
->open_stateid
;
2086 struct rpc_cred
*cred
= state
->owner
->so_cred
;
2089 /* If a state reset has been done, test_stateid is unneeded */
2090 if ((test_bit(NFS_O_RDONLY_STATE
, &state
->flags
) == 0) &&
2091 (test_bit(NFS_O_WRONLY_STATE
, &state
->flags
) == 0) &&
2092 (test_bit(NFS_O_RDWR_STATE
, &state
->flags
) == 0))
2093 return -NFS4ERR_BAD_STATEID
;
2095 status
= nfs41_test_stateid(server
, stateid
, cred
);
2096 trace_nfs4_test_open_stateid(state
, NULL
, status
);
2097 if (status
!= NFS_OK
) {
2098 /* Free the stateid unless the server explicitly
2099 * informs us the stateid is unrecognized. */
2100 if (status
!= -NFS4ERR_BAD_STATEID
)
2101 nfs41_free_stateid(server
, stateid
, cred
);
2103 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
2104 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
2105 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2106 clear_bit(NFS_OPEN_STATE
, &state
->flags
);
2111 static int nfs41_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
2115 nfs41_clear_delegation_stateid(state
);
2116 status
= nfs41_check_open_stateid(state
);
2117 if (status
!= NFS_OK
)
2118 status
= nfs4_open_expired(sp
, state
);
2124 * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-*
2125 * fields corresponding to attributes that were used to store the verifier.
2126 * Make sure we clobber those fields in the later setattr call
2128 static inline void nfs4_exclusive_attrset(struct nfs4_opendata
*opendata
, struct iattr
*sattr
)
2130 if ((opendata
->o_res
.attrset
[1] & FATTR4_WORD1_TIME_ACCESS
) &&
2131 !(sattr
->ia_valid
& ATTR_ATIME_SET
))
2132 sattr
->ia_valid
|= ATTR_ATIME
;
2134 if ((opendata
->o_res
.attrset
[1] & FATTR4_WORD1_TIME_MODIFY
) &&
2135 !(sattr
->ia_valid
& ATTR_MTIME_SET
))
2136 sattr
->ia_valid
|= ATTR_MTIME
;
2139 static int _nfs4_open_and_get_state(struct nfs4_opendata
*opendata
,
2142 struct nfs_open_context
*ctx
)
2144 struct nfs4_state_owner
*sp
= opendata
->owner
;
2145 struct nfs_server
*server
= sp
->so_server
;
2146 struct dentry
*dentry
;
2147 struct nfs4_state
*state
;
2151 seq
= raw_seqcount_begin(&sp
->so_reclaim_seqcount
);
2153 ret
= _nfs4_proc_open(opendata
);
2157 state
= nfs4_opendata_to_nfs4_state(opendata
);
2158 ret
= PTR_ERR(state
);
2161 if (server
->caps
& NFS_CAP_POSIX_LOCK
)
2162 set_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
);
2164 dentry
= opendata
->dentry
;
2165 if (dentry
->d_inode
== NULL
) {
2166 /* FIXME: Is this d_drop() ever needed? */
2168 dentry
= d_add_unique(dentry
, igrab(state
->inode
));
2169 if (dentry
== NULL
) {
2170 dentry
= opendata
->dentry
;
2171 } else if (dentry
!= ctx
->dentry
) {
2173 ctx
->dentry
= dget(dentry
);
2175 nfs_set_verifier(dentry
,
2176 nfs_save_change_attribute(opendata
->dir
->d_inode
));
2179 ret
= nfs4_opendata_access(sp
->so_cred
, opendata
, state
, fmode
, flags
);
2184 if (dentry
->d_inode
== state
->inode
) {
2185 nfs_inode_attach_open_context(ctx
);
2186 if (read_seqcount_retry(&sp
->so_reclaim_seqcount
, seq
))
2187 nfs4_schedule_stateid_recovery(server
, state
);
2194 * Returns a referenced nfs4_state
2196 static int _nfs4_do_open(struct inode
*dir
,
2197 struct nfs_open_context
*ctx
,
2199 struct iattr
*sattr
,
2200 struct nfs4_label
*label
,
2203 struct nfs4_state_owner
*sp
;
2204 struct nfs4_state
*state
= NULL
;
2205 struct nfs_server
*server
= NFS_SERVER(dir
);
2206 struct nfs4_opendata
*opendata
;
2207 struct dentry
*dentry
= ctx
->dentry
;
2208 struct rpc_cred
*cred
= ctx
->cred
;
2209 struct nfs4_threshold
**ctx_th
= &ctx
->mdsthreshold
;
2210 fmode_t fmode
= ctx
->mode
& (FMODE_READ
|FMODE_WRITE
|FMODE_EXEC
);
2211 enum open_claim_type4 claim
= NFS4_OPEN_CLAIM_NULL
;
2212 struct nfs4_label
*olabel
= NULL
;
2215 /* Protect against reboot recovery conflicts */
2217 sp
= nfs4_get_state_owner(server
, cred
, GFP_KERNEL
);
2219 dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n");
2222 status
= nfs4_recover_expired_lease(server
);
2224 goto err_put_state_owner
;
2225 if (dentry
->d_inode
!= NULL
)
2226 nfs4_return_incompatible_delegation(dentry
->d_inode
, fmode
);
2228 if (dentry
->d_inode
)
2229 claim
= NFS4_OPEN_CLAIM_FH
;
2230 opendata
= nfs4_opendata_alloc(dentry
, sp
, fmode
, flags
, sattr
,
2231 label
, claim
, GFP_KERNEL
);
2232 if (opendata
== NULL
)
2233 goto err_put_state_owner
;
2236 olabel
= nfs4_label_alloc(server
, GFP_KERNEL
);
2237 if (IS_ERR(olabel
)) {
2238 status
= PTR_ERR(olabel
);
2239 goto err_opendata_put
;
2243 if (ctx_th
&& server
->attr_bitmask
[2] & FATTR4_WORD2_MDSTHRESHOLD
) {
2244 opendata
->f_attr
.mdsthreshold
= pnfs_mdsthreshold_alloc();
2245 if (!opendata
->f_attr
.mdsthreshold
)
2246 goto err_free_label
;
2247 opendata
->o_arg
.open_bitmap
= &nfs4_pnfs_open_bitmap
[0];
2249 if (dentry
->d_inode
!= NULL
)
2250 opendata
->state
= nfs4_get_open_state(dentry
->d_inode
, sp
);
2252 status
= _nfs4_open_and_get_state(opendata
, fmode
, flags
, ctx
);
2254 goto err_free_label
;
2257 if ((opendata
->o_arg
.open_flags
& O_EXCL
) &&
2258 (opendata
->o_arg
.createmode
!= NFS4_CREATE_GUARDED
)) {
2259 nfs4_exclusive_attrset(opendata
, sattr
);
2261 nfs_fattr_init(opendata
->o_res
.f_attr
);
2262 status
= nfs4_do_setattr(state
->inode
, cred
,
2263 opendata
->o_res
.f_attr
, sattr
,
2264 state
, label
, olabel
);
2266 nfs_setattr_update_inode(state
->inode
, sattr
);
2267 nfs_post_op_update_inode(state
->inode
, opendata
->o_res
.f_attr
);
2268 nfs_setsecurity(state
->inode
, opendata
->o_res
.f_attr
, olabel
);
2271 if (opendata
->file_created
)
2272 *opened
|= FILE_CREATED
;
2274 if (pnfs_use_threshold(ctx_th
, opendata
->f_attr
.mdsthreshold
, server
))
2275 *ctx_th
= opendata
->f_attr
.mdsthreshold
;
2277 kfree(opendata
->f_attr
.mdsthreshold
);
2278 opendata
->f_attr
.mdsthreshold
= NULL
;
2280 nfs4_label_free(olabel
);
2282 nfs4_opendata_put(opendata
);
2283 nfs4_put_state_owner(sp
);
2286 nfs4_label_free(olabel
);
2288 kfree(opendata
->f_attr
.mdsthreshold
);
2289 nfs4_opendata_put(opendata
);
2290 err_put_state_owner
:
2291 nfs4_put_state_owner(sp
);
2297 static struct nfs4_state
*nfs4_do_open(struct inode
*dir
,
2298 struct nfs_open_context
*ctx
,
2300 struct iattr
*sattr
,
2301 struct nfs4_label
*label
,
2304 struct nfs_server
*server
= NFS_SERVER(dir
);
2305 struct nfs4_exception exception
= { };
2306 struct nfs4_state
*res
;
2310 status
= _nfs4_do_open(dir
, ctx
, flags
, sattr
, label
, opened
);
2312 trace_nfs4_open_file(ctx
, flags
, status
);
2315 /* NOTE: BAD_SEQID means the server and client disagree about the
2316 * book-keeping w.r.t. state-changing operations
2317 * (OPEN/CLOSE/LOCK/LOCKU...)
2318 * It is actually a sign of a bug on the client or on the server.
2320 * If we receive a BAD_SEQID error in the particular case of
2321 * doing an OPEN, we assume that nfs_increment_open_seqid() will
2322 * have unhashed the old state_owner for us, and that we can
2323 * therefore safely retry using a new one. We should still warn
2324 * the user though...
2326 if (status
== -NFS4ERR_BAD_SEQID
) {
2327 pr_warn_ratelimited("NFS: v4 server %s "
2328 " returned a bad sequence-id error!\n",
2329 NFS_SERVER(dir
)->nfs_client
->cl_hostname
);
2330 exception
.retry
= 1;
2334 * BAD_STATEID on OPEN means that the server cancelled our
2335 * state before it received the OPEN_CONFIRM.
2336 * Recover by retrying the request as per the discussion
2337 * on Page 181 of RFC3530.
2339 if (status
== -NFS4ERR_BAD_STATEID
) {
2340 exception
.retry
= 1;
2343 if (status
== -EAGAIN
) {
2344 /* We must have found a delegation */
2345 exception
.retry
= 1;
2348 if (nfs4_clear_cap_atomic_open_v1(server
, status
, &exception
))
2350 res
= ERR_PTR(nfs4_handle_exception(server
,
2351 status
, &exception
));
2352 } while (exception
.retry
);
2356 static int _nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
2357 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
2358 struct nfs4_state
*state
, struct nfs4_label
*ilabel
,
2359 struct nfs4_label
*olabel
)
2361 struct nfs_server
*server
= NFS_SERVER(inode
);
2362 struct nfs_setattrargs arg
= {
2363 .fh
= NFS_FH(inode
),
2366 .bitmask
= server
->attr_bitmask
,
2369 struct nfs_setattrres res
= {
2374 struct rpc_message msg
= {
2375 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETATTR
],
2380 unsigned long timestamp
= jiffies
;
2385 arg
.bitmask
= nfs4_bitmask(server
, ilabel
);
2387 arg
.bitmask
= nfs4_bitmask(server
, olabel
);
2389 nfs_fattr_init(fattr
);
2391 /* Servers should only apply open mode checks for file size changes */
2392 truncate
= (sattr
->ia_valid
& ATTR_SIZE
) ? true : false;
2393 fmode
= truncate
? FMODE_WRITE
: FMODE_READ
;
2395 if (nfs4_copy_delegation_stateid(&arg
.stateid
, inode
, fmode
)) {
2396 /* Use that stateid */
2397 } else if (truncate
&& state
!= NULL
&& nfs4_valid_open_stateid(state
)) {
2398 struct nfs_lockowner lockowner
= {
2399 .l_owner
= current
->files
,
2400 .l_pid
= current
->tgid
,
2402 nfs4_select_rw_stateid(&arg
.stateid
, state
, FMODE_WRITE
,
2405 nfs4_stateid_copy(&arg
.stateid
, &zero_stateid
);
2407 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
2408 if (status
== 0 && state
!= NULL
)
2409 renew_lease(server
, timestamp
);
2413 static int nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
2414 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
2415 struct nfs4_state
*state
, struct nfs4_label
*ilabel
,
2416 struct nfs4_label
*olabel
)
2418 struct nfs_server
*server
= NFS_SERVER(inode
);
2419 struct nfs4_exception exception
= {
2425 err
= _nfs4_do_setattr(inode
, cred
, fattr
, sattr
, state
, ilabel
, olabel
);
2426 trace_nfs4_setattr(inode
, err
);
2428 case -NFS4ERR_OPENMODE
:
2429 if (!(sattr
->ia_valid
& ATTR_SIZE
)) {
2430 pr_warn_once("NFSv4: server %s is incorrectly "
2431 "applying open mode checks to "
2432 "a SETATTR that is not "
2433 "changing file size.\n",
2434 server
->nfs_client
->cl_hostname
);
2436 if (state
&& !(state
->state
& FMODE_WRITE
)) {
2438 if (sattr
->ia_valid
& ATTR_OPEN
)
2443 err
= nfs4_handle_exception(server
, err
, &exception
);
2444 } while (exception
.retry
);
2449 struct nfs4_closedata
{
2450 struct inode
*inode
;
2451 struct nfs4_state
*state
;
2452 struct nfs_closeargs arg
;
2453 struct nfs_closeres res
;
2454 struct nfs_fattr fattr
;
2455 unsigned long timestamp
;
2460 static void nfs4_free_closedata(void *data
)
2462 struct nfs4_closedata
*calldata
= data
;
2463 struct nfs4_state_owner
*sp
= calldata
->state
->owner
;
2464 struct super_block
*sb
= calldata
->state
->inode
->i_sb
;
2467 pnfs_roc_release(calldata
->state
->inode
);
2468 nfs4_put_open_state(calldata
->state
);
2469 nfs_free_seqid(calldata
->arg
.seqid
);
2470 nfs4_put_state_owner(sp
);
2471 nfs_sb_deactive(sb
);
2475 static void nfs4_close_clear_stateid_flags(struct nfs4_state
*state
,
2478 spin_lock(&state
->owner
->so_lock
);
2479 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2480 switch (fmode
& (FMODE_READ
|FMODE_WRITE
)) {
2482 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
2485 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
2488 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
2489 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
2490 clear_bit(NFS_OPEN_STATE
, &state
->flags
);
2492 spin_unlock(&state
->owner
->so_lock
);
2495 static void nfs4_close_done(struct rpc_task
*task
, void *data
)
2497 struct nfs4_closedata
*calldata
= data
;
2498 struct nfs4_state
*state
= calldata
->state
;
2499 struct nfs_server
*server
= NFS_SERVER(calldata
->inode
);
2501 dprintk("%s: begin!\n", __func__
);
2502 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
2504 trace_nfs4_close(state
, &calldata
->arg
, &calldata
->res
, task
->tk_status
);
2505 /* hmm. we are done with the inode, and in the process of freeing
2506 * the state_owner. we keep this around to process errors
2508 switch (task
->tk_status
) {
2511 pnfs_roc_set_barrier(state
->inode
,
2512 calldata
->roc_barrier
);
2513 nfs_set_open_stateid(state
, &calldata
->res
.stateid
, 0);
2514 renew_lease(server
, calldata
->timestamp
);
2515 nfs4_close_clear_stateid_flags(state
,
2516 calldata
->arg
.fmode
);
2518 case -NFS4ERR_STALE_STATEID
:
2519 case -NFS4ERR_OLD_STATEID
:
2520 case -NFS4ERR_BAD_STATEID
:
2521 case -NFS4ERR_EXPIRED
:
2522 if (calldata
->arg
.fmode
== 0)
2525 if (nfs4_async_handle_error(task
, server
, state
) == -EAGAIN
)
2526 rpc_restart_call_prepare(task
);
2528 nfs_release_seqid(calldata
->arg
.seqid
);
2529 nfs_refresh_inode(calldata
->inode
, calldata
->res
.fattr
);
2530 dprintk("%s: done, ret = %d!\n", __func__
, task
->tk_status
);
2533 static void nfs4_close_prepare(struct rpc_task
*task
, void *data
)
2535 struct nfs4_closedata
*calldata
= data
;
2536 struct nfs4_state
*state
= calldata
->state
;
2537 struct inode
*inode
= calldata
->inode
;
2540 dprintk("%s: begin!\n", __func__
);
2541 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
2544 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_DOWNGRADE
];
2545 calldata
->arg
.fmode
= FMODE_READ
|FMODE_WRITE
;
2546 spin_lock(&state
->owner
->so_lock
);
2547 /* Calculate the change in open mode */
2548 if (state
->n_rdwr
== 0) {
2549 if (state
->n_rdonly
== 0) {
2550 call_close
|= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
2551 call_close
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2552 calldata
->arg
.fmode
&= ~FMODE_READ
;
2554 if (state
->n_wronly
== 0) {
2555 call_close
|= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
2556 call_close
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2557 calldata
->arg
.fmode
&= ~FMODE_WRITE
;
2560 if (!nfs4_valid_open_stateid(state
))
2562 spin_unlock(&state
->owner
->so_lock
);
2565 /* Note: exit _without_ calling nfs4_close_done */
2569 if (calldata
->arg
.fmode
== 0) {
2570 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
];
2571 if (calldata
->roc
&&
2572 pnfs_roc_drain(inode
, &calldata
->roc_barrier
, task
)) {
2573 nfs_release_seqid(calldata
->arg
.seqid
);
2578 nfs_fattr_init(calldata
->res
.fattr
);
2579 calldata
->timestamp
= jiffies
;
2580 if (nfs4_setup_sequence(NFS_SERVER(inode
),
2581 &calldata
->arg
.seq_args
,
2582 &calldata
->res
.seq_res
,
2584 nfs_release_seqid(calldata
->arg
.seqid
);
2585 dprintk("%s: done!\n", __func__
);
2588 task
->tk_action
= NULL
;
2590 nfs4_sequence_done(task
, &calldata
->res
.seq_res
);
2593 static const struct rpc_call_ops nfs4_close_ops
= {
2594 .rpc_call_prepare
= nfs4_close_prepare
,
2595 .rpc_call_done
= nfs4_close_done
,
2596 .rpc_release
= nfs4_free_closedata
,
2600 * It is possible for data to be read/written from a mem-mapped file
2601 * after the sys_close call (which hits the vfs layer as a flush).
2602 * This means that we can't safely call nfsv4 close on a file until
2603 * the inode is cleared. This in turn means that we are not good
2604 * NFSv4 citizens - we do not indicate to the server to update the file's
2605 * share state even when we are done with one of the three share
2606 * stateid's in the inode.
2608 * NOTE: Caller must be holding the sp->so_owner semaphore!
2610 int nfs4_do_close(struct nfs4_state
*state
, gfp_t gfp_mask
, int wait
)
2612 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2613 struct nfs4_closedata
*calldata
;
2614 struct nfs4_state_owner
*sp
= state
->owner
;
2615 struct rpc_task
*task
;
2616 struct rpc_message msg
= {
2617 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
],
2618 .rpc_cred
= state
->owner
->so_cred
,
2620 struct rpc_task_setup task_setup_data
= {
2621 .rpc_client
= server
->client
,
2622 .rpc_message
= &msg
,
2623 .callback_ops
= &nfs4_close_ops
,
2624 .workqueue
= nfsiod_workqueue
,
2625 .flags
= RPC_TASK_ASYNC
,
2627 int status
= -ENOMEM
;
2629 nfs4_state_protect(server
->nfs_client
, NFS_SP4_MACH_CRED_CLEANUP
,
2630 &task_setup_data
.rpc_client
, &msg
);
2632 calldata
= kzalloc(sizeof(*calldata
), gfp_mask
);
2633 if (calldata
== NULL
)
2635 nfs4_init_sequence(&calldata
->arg
.seq_args
, &calldata
->res
.seq_res
, 1);
2636 calldata
->inode
= state
->inode
;
2637 calldata
->state
= state
;
2638 calldata
->arg
.fh
= NFS_FH(state
->inode
);
2639 calldata
->arg
.stateid
= &state
->open_stateid
;
2640 /* Serialization for the sequence id */
2641 calldata
->arg
.seqid
= nfs_alloc_seqid(&state
->owner
->so_seqid
, gfp_mask
);
2642 if (calldata
->arg
.seqid
== NULL
)
2643 goto out_free_calldata
;
2644 calldata
->arg
.fmode
= 0;
2645 calldata
->arg
.bitmask
= server
->cache_consistency_bitmask
;
2646 calldata
->res
.fattr
= &calldata
->fattr
;
2647 calldata
->res
.seqid
= calldata
->arg
.seqid
;
2648 calldata
->res
.server
= server
;
2649 calldata
->roc
= pnfs_roc(state
->inode
);
2650 nfs_sb_active(calldata
->inode
->i_sb
);
2652 msg
.rpc_argp
= &calldata
->arg
;
2653 msg
.rpc_resp
= &calldata
->res
;
2654 task_setup_data
.callback_data
= calldata
;
2655 task
= rpc_run_task(&task_setup_data
);
2657 return PTR_ERR(task
);
2660 status
= rpc_wait_for_completion_task(task
);
2666 nfs4_put_open_state(state
);
2667 nfs4_put_state_owner(sp
);
2671 static struct inode
*
2672 nfs4_atomic_open(struct inode
*dir
, struct nfs_open_context
*ctx
,
2673 int open_flags
, struct iattr
*attr
, int *opened
)
2675 struct nfs4_state
*state
;
2676 struct nfs4_label l
= {0, 0, 0, NULL
}, *label
= NULL
;
2678 label
= nfs4_label_init_security(dir
, ctx
->dentry
, attr
, &l
);
2680 /* Protect against concurrent sillydeletes */
2681 state
= nfs4_do_open(dir
, ctx
, open_flags
, attr
, label
, opened
);
2683 nfs4_label_release_security(label
);
2686 return ERR_CAST(state
);
2687 return state
->inode
;
2690 static void nfs4_close_context(struct nfs_open_context
*ctx
, int is_sync
)
2692 if (ctx
->state
== NULL
)
2695 nfs4_close_sync(ctx
->state
, ctx
->mode
);
2697 nfs4_close_state(ctx
->state
, ctx
->mode
);
2700 static int _nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
2702 struct nfs4_server_caps_arg args
= {
2705 struct nfs4_server_caps_res res
= {};
2706 struct rpc_message msg
= {
2707 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SERVER_CAPS
],
2713 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2715 memcpy(server
->attr_bitmask
, res
.attr_bitmask
, sizeof(server
->attr_bitmask
));
2716 server
->caps
&= ~(NFS_CAP_ACLS
|NFS_CAP_HARDLINKS
|
2717 NFS_CAP_SYMLINKS
|NFS_CAP_FILEID
|
2718 NFS_CAP_MODE
|NFS_CAP_NLINK
|NFS_CAP_OWNER
|
2719 NFS_CAP_OWNER_GROUP
|NFS_CAP_ATIME
|
2720 NFS_CAP_CTIME
|NFS_CAP_MTIME
);
2721 if (res
.attr_bitmask
[0] & FATTR4_WORD0_ACL
)
2722 server
->caps
|= NFS_CAP_ACLS
;
2723 if (res
.has_links
!= 0)
2724 server
->caps
|= NFS_CAP_HARDLINKS
;
2725 if (res
.has_symlinks
!= 0)
2726 server
->caps
|= NFS_CAP_SYMLINKS
;
2727 if (res
.attr_bitmask
[0] & FATTR4_WORD0_FILEID
)
2728 server
->caps
|= NFS_CAP_FILEID
;
2729 if (res
.attr_bitmask
[1] & FATTR4_WORD1_MODE
)
2730 server
->caps
|= NFS_CAP_MODE
;
2731 if (res
.attr_bitmask
[1] & FATTR4_WORD1_NUMLINKS
)
2732 server
->caps
|= NFS_CAP_NLINK
;
2733 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER
)
2734 server
->caps
|= NFS_CAP_OWNER
;
2735 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER_GROUP
)
2736 server
->caps
|= NFS_CAP_OWNER_GROUP
;
2737 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_ACCESS
)
2738 server
->caps
|= NFS_CAP_ATIME
;
2739 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_METADATA
)
2740 server
->caps
|= NFS_CAP_CTIME
;
2741 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_MODIFY
)
2742 server
->caps
|= NFS_CAP_MTIME
;
2743 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
2744 if (res
.attr_bitmask
[2] & FATTR4_WORD2_SECURITY_LABEL
)
2745 server
->caps
|= NFS_CAP_SECURITY_LABEL
;
2747 memcpy(server
->attr_bitmask_nl
, res
.attr_bitmask
,
2748 sizeof(server
->attr_bitmask
));
2750 if (server
->caps
& NFS_CAP_SECURITY_LABEL
) {
2751 server
->attr_bitmask_nl
[2] &= ~FATTR4_WORD2_SECURITY_LABEL
;
2752 res
.attr_bitmask
[2] &= ~FATTR4_WORD2_SECURITY_LABEL
;
2754 memcpy(server
->cache_consistency_bitmask
, res
.attr_bitmask
, sizeof(server
->cache_consistency_bitmask
));
2755 server
->cache_consistency_bitmask
[0] &= FATTR4_WORD0_CHANGE
|FATTR4_WORD0_SIZE
;
2756 server
->cache_consistency_bitmask
[1] &= FATTR4_WORD1_TIME_METADATA
|FATTR4_WORD1_TIME_MODIFY
;
2757 server
->acl_bitmask
= res
.acl_bitmask
;
2758 server
->fh_expire_type
= res
.fh_expire_type
;
2764 int nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
2766 struct nfs4_exception exception
= { };
2769 err
= nfs4_handle_exception(server
,
2770 _nfs4_server_capabilities(server
, fhandle
),
2772 } while (exception
.retry
);
2776 static int _nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2777 struct nfs_fsinfo
*info
)
2780 struct nfs4_lookup_root_arg args
= {
2783 struct nfs4_lookup_res res
= {
2785 .fattr
= info
->fattr
,
2788 struct rpc_message msg
= {
2789 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP_ROOT
],
2794 bitmask
[0] = nfs4_fattr_bitmap
[0];
2795 bitmask
[1] = nfs4_fattr_bitmap
[1];
2797 * Process the label in the upcoming getfattr
2799 bitmask
[2] = nfs4_fattr_bitmap
[2] & ~FATTR4_WORD2_SECURITY_LABEL
;
2801 nfs_fattr_init(info
->fattr
);
2802 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2805 static int nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2806 struct nfs_fsinfo
*info
)
2808 struct nfs4_exception exception
= { };
2811 err
= _nfs4_lookup_root(server
, fhandle
, info
);
2812 trace_nfs4_lookup_root(server
, fhandle
, info
->fattr
, err
);
2815 case -NFS4ERR_WRONGSEC
:
2818 err
= nfs4_handle_exception(server
, err
, &exception
);
2820 } while (exception
.retry
);
2825 static int nfs4_lookup_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2826 struct nfs_fsinfo
*info
, rpc_authflavor_t flavor
)
2828 struct rpc_auth_create_args auth_args
= {
2829 .pseudoflavor
= flavor
,
2831 struct rpc_auth
*auth
;
2834 auth
= rpcauth_create(&auth_args
, server
->client
);
2839 ret
= nfs4_lookup_root(server
, fhandle
, info
);
2845 * Retry pseudoroot lookup with various security flavors. We do this when:
2847 * NFSv4.0: the PUTROOTFH operation returns NFS4ERR_WRONGSEC
2848 * NFSv4.1: the server does not support the SECINFO_NO_NAME operation
2850 * Returns zero on success, or a negative NFS4ERR value, or a
2851 * negative errno value.
2853 static int nfs4_find_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2854 struct nfs_fsinfo
*info
)
2856 /* Per 3530bis 15.33.5 */
2857 static const rpc_authflavor_t flav_array
[] = {
2861 RPC_AUTH_UNIX
, /* courtesy */
2864 int status
= -EPERM
;
2867 for (i
= 0; i
< ARRAY_SIZE(flav_array
); i
++) {
2868 status
= nfs4_lookup_root_sec(server
, fhandle
, info
, flav_array
[i
]);
2869 if (status
== -NFS4ERR_WRONGSEC
|| status
== -EACCES
)
2875 * -EACCESS could mean that the user doesn't have correct permissions
2876 * to access the mount. It could also mean that we tried to mount
2877 * with a gss auth flavor, but rpc.gssd isn't running. Either way,
2878 * existing mount programs don't handle -EACCES very well so it should
2879 * be mapped to -EPERM instead.
2881 if (status
== -EACCES
)
2886 static int nfs4_do_find_root_sec(struct nfs_server
*server
,
2887 struct nfs_fh
*fhandle
, struct nfs_fsinfo
*info
)
2889 int mv
= server
->nfs_client
->cl_minorversion
;
2890 return nfs_v4_minor_ops
[mv
]->find_root_sec(server
, fhandle
, info
);
2894 * nfs4_proc_get_rootfh - get file handle for server's pseudoroot
2895 * @server: initialized nfs_server handle
2896 * @fhandle: we fill in the pseudo-fs root file handle
2897 * @info: we fill in an FSINFO struct
2898 * @auth_probe: probe the auth flavours
2900 * Returns zero on success, or a negative errno.
2902 int nfs4_proc_get_rootfh(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2903 struct nfs_fsinfo
*info
,
2908 switch (auth_probe
) {
2910 status
= nfs4_lookup_root(server
, fhandle
, info
);
2911 if (status
!= -NFS4ERR_WRONGSEC
)
2913 /* Did user force a 'sec=' mount option? */
2914 if (server
->flags
& NFS_MOUNT_SECFLAVOUR
)
2917 status
= nfs4_do_find_root_sec(server
, fhandle
, info
);
2921 status
= nfs4_server_capabilities(server
, fhandle
);
2923 status
= nfs4_do_fsinfo(server
, fhandle
, info
);
2925 return nfs4_map_errors(status
);
2928 static int nfs4_proc_get_root(struct nfs_server
*server
, struct nfs_fh
*mntfh
,
2929 struct nfs_fsinfo
*info
)
2932 struct nfs_fattr
*fattr
= info
->fattr
;
2933 struct nfs4_label
*label
= NULL
;
2935 error
= nfs4_server_capabilities(server
, mntfh
);
2937 dprintk("nfs4_get_root: getcaps error = %d\n", -error
);
2941 label
= nfs4_label_alloc(server
, GFP_KERNEL
);
2943 return PTR_ERR(label
);
2945 error
= nfs4_proc_getattr(server
, mntfh
, fattr
, label
);
2947 dprintk("nfs4_get_root: getattr error = %d\n", -error
);
2948 goto err_free_label
;
2951 if (fattr
->valid
& NFS_ATTR_FATTR_FSID
&&
2952 !nfs_fsid_equal(&server
->fsid
, &fattr
->fsid
))
2953 memcpy(&server
->fsid
, &fattr
->fsid
, sizeof(server
->fsid
));
2956 nfs4_label_free(label
);
2962 * Get locations and (maybe) other attributes of a referral.
2963 * Note that we'll actually follow the referral later when
2964 * we detect fsid mismatch in inode revalidation
2966 static int nfs4_get_referral(struct rpc_clnt
*client
, struct inode
*dir
,
2967 const struct qstr
*name
, struct nfs_fattr
*fattr
,
2968 struct nfs_fh
*fhandle
)
2970 int status
= -ENOMEM
;
2971 struct page
*page
= NULL
;
2972 struct nfs4_fs_locations
*locations
= NULL
;
2974 page
= alloc_page(GFP_KERNEL
);
2977 locations
= kmalloc(sizeof(struct nfs4_fs_locations
), GFP_KERNEL
);
2978 if (locations
== NULL
)
2981 status
= nfs4_proc_fs_locations(client
, dir
, name
, locations
, page
);
2984 /* Make sure server returned a different fsid for the referral */
2985 if (nfs_fsid_equal(&NFS_SERVER(dir
)->fsid
, &locations
->fattr
.fsid
)) {
2986 dprintk("%s: server did not return a different fsid for"
2987 " a referral at %s\n", __func__
, name
->name
);
2991 /* Fixup attributes for the nfs_lookup() call to nfs_fhget() */
2992 nfs_fixup_referral_attributes(&locations
->fattr
);
2994 /* replace the lookup nfs_fattr with the locations nfs_fattr */
2995 memcpy(fattr
, &locations
->fattr
, sizeof(struct nfs_fattr
));
2996 memset(fhandle
, 0, sizeof(struct nfs_fh
));
3004 static int _nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3005 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
3007 struct nfs4_getattr_arg args
= {
3009 .bitmask
= server
->attr_bitmask
,
3011 struct nfs4_getattr_res res
= {
3016 struct rpc_message msg
= {
3017 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETATTR
],
3022 args
.bitmask
= nfs4_bitmask(server
, label
);
3024 nfs_fattr_init(fattr
);
3025 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3028 static int nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3029 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
3031 struct nfs4_exception exception
= { };
3034 err
= _nfs4_proc_getattr(server
, fhandle
, fattr
, label
);
3035 trace_nfs4_getattr(server
, fhandle
, fattr
, err
);
3036 err
= nfs4_handle_exception(server
, err
,
3038 } while (exception
.retry
);
3043 * The file is not closed if it is opened due to the a request to change
3044 * the size of the file. The open call will not be needed once the
3045 * VFS layer lookup-intents are implemented.
3047 * Close is called when the inode is destroyed.
3048 * If we haven't opened the file for O_WRONLY, we
3049 * need to in the size_change case to obtain a stateid.
3052 * Because OPEN is always done by name in nfsv4, it is
3053 * possible that we opened a different file by the same
3054 * name. We can recognize this race condition, but we
3055 * can't do anything about it besides returning an error.
3057 * This will be fixed with VFS changes (lookup-intent).
3060 nfs4_proc_setattr(struct dentry
*dentry
, struct nfs_fattr
*fattr
,
3061 struct iattr
*sattr
)
3063 struct inode
*inode
= dentry
->d_inode
;
3064 struct rpc_cred
*cred
= NULL
;
3065 struct nfs4_state
*state
= NULL
;
3066 struct nfs4_label
*label
= NULL
;
3069 if (pnfs_ld_layoutret_on_setattr(inode
))
3070 pnfs_commit_and_return_layout(inode
);
3072 nfs_fattr_init(fattr
);
3074 /* Deal with open(O_TRUNC) */
3075 if (sattr
->ia_valid
& ATTR_OPEN
)
3076 sattr
->ia_valid
&= ~(ATTR_MTIME
|ATTR_CTIME
);
3078 /* Optimization: if the end result is no change, don't RPC */
3079 if ((sattr
->ia_valid
& ~(ATTR_FILE
|ATTR_OPEN
)) == 0)
3082 /* Search for an existing open(O_WRITE) file */
3083 if (sattr
->ia_valid
& ATTR_FILE
) {
3084 struct nfs_open_context
*ctx
;
3086 ctx
= nfs_file_open_context(sattr
->ia_file
);
3093 label
= nfs4_label_alloc(NFS_SERVER(inode
), GFP_KERNEL
);
3095 return PTR_ERR(label
);
3097 status
= nfs4_do_setattr(inode
, cred
, fattr
, sattr
, state
, NULL
, label
);
3099 nfs_setattr_update_inode(inode
, sattr
);
3100 nfs_setsecurity(inode
, fattr
, label
);
3102 nfs4_label_free(label
);
3106 static int _nfs4_proc_lookup(struct rpc_clnt
*clnt
, struct inode
*dir
,
3107 const struct qstr
*name
, struct nfs_fh
*fhandle
,
3108 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
3110 struct nfs_server
*server
= NFS_SERVER(dir
);
3112 struct nfs4_lookup_arg args
= {
3113 .bitmask
= server
->attr_bitmask
,
3114 .dir_fh
= NFS_FH(dir
),
3117 struct nfs4_lookup_res res
= {
3123 struct rpc_message msg
= {
3124 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP
],
3129 args
.bitmask
= nfs4_bitmask(server
, label
);
3131 nfs_fattr_init(fattr
);
3133 dprintk("NFS call lookup %s\n", name
->name
);
3134 status
= nfs4_call_sync(clnt
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3135 dprintk("NFS reply lookup: %d\n", status
);
3139 static void nfs_fixup_secinfo_attributes(struct nfs_fattr
*fattr
)
3141 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
3142 NFS_ATTR_FATTR_NLINK
| NFS_ATTR_FATTR_MOUNTPOINT
;
3143 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
3147 static int nfs4_proc_lookup_common(struct rpc_clnt
**clnt
, struct inode
*dir
,
3148 struct qstr
*name
, struct nfs_fh
*fhandle
,
3149 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
3151 struct nfs4_exception exception
= { };
3152 struct rpc_clnt
*client
= *clnt
;
3155 err
= _nfs4_proc_lookup(client
, dir
, name
, fhandle
, fattr
, label
);
3156 trace_nfs4_lookup(dir
, name
, err
);
3158 case -NFS4ERR_BADNAME
:
3161 case -NFS4ERR_MOVED
:
3162 err
= nfs4_get_referral(client
, dir
, name
, fattr
, fhandle
);
3164 case -NFS4ERR_WRONGSEC
:
3166 if (client
!= *clnt
)
3168 /* No security negotiation if the user specified 'sec=' */
3169 if (NFS_SERVER(dir
)->flags
& NFS_MOUNT_SECFLAVOUR
)
3171 client
= nfs4_create_sec_client(client
, dir
, name
);
3173 return PTR_ERR(client
);
3175 exception
.retry
= 1;
3178 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
, &exception
);
3180 } while (exception
.retry
);
3185 else if (client
!= *clnt
)
3186 rpc_shutdown_client(client
);
3191 static int nfs4_proc_lookup(struct inode
*dir
, struct qstr
*name
,
3192 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
,
3193 struct nfs4_label
*label
)
3196 struct rpc_clnt
*client
= NFS_CLIENT(dir
);
3198 status
= nfs4_proc_lookup_common(&client
, dir
, name
, fhandle
, fattr
, label
);
3199 if (client
!= NFS_CLIENT(dir
)) {
3200 rpc_shutdown_client(client
);
3201 nfs_fixup_secinfo_attributes(fattr
);
3207 nfs4_proc_lookup_mountpoint(struct inode
*dir
, struct qstr
*name
,
3208 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
3210 struct rpc_clnt
*client
= NFS_CLIENT(dir
);
3213 status
= nfs4_proc_lookup_common(&client
, dir
, name
, fhandle
, fattr
, NULL
);
3215 return ERR_PTR(status
);
3216 return (client
== NFS_CLIENT(dir
)) ? rpc_clone_client(client
) : client
;
3219 static int _nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
3221 struct nfs_server
*server
= NFS_SERVER(inode
);
3222 struct nfs4_accessargs args
= {
3223 .fh
= NFS_FH(inode
),
3224 .bitmask
= server
->cache_consistency_bitmask
,
3226 struct nfs4_accessres res
= {
3229 struct rpc_message msg
= {
3230 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_ACCESS
],
3233 .rpc_cred
= entry
->cred
,
3235 int mode
= entry
->mask
;
3239 * Determine which access bits we want to ask for...
3241 if (mode
& MAY_READ
)
3242 args
.access
|= NFS4_ACCESS_READ
;
3243 if (S_ISDIR(inode
->i_mode
)) {
3244 if (mode
& MAY_WRITE
)
3245 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
| NFS4_ACCESS_DELETE
;
3246 if (mode
& MAY_EXEC
)
3247 args
.access
|= NFS4_ACCESS_LOOKUP
;
3249 if (mode
& MAY_WRITE
)
3250 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
;
3251 if (mode
& MAY_EXEC
)
3252 args
.access
|= NFS4_ACCESS_EXECUTE
;
3255 res
.fattr
= nfs_alloc_fattr();
3256 if (res
.fattr
== NULL
)
3259 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3261 nfs_access_set_mask(entry
, res
.access
);
3262 nfs_refresh_inode(inode
, res
.fattr
);
3264 nfs_free_fattr(res
.fattr
);
3268 static int nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
3270 struct nfs4_exception exception
= { };
3273 err
= _nfs4_proc_access(inode
, entry
);
3274 trace_nfs4_access(inode
, err
);
3275 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
3277 } while (exception
.retry
);
3282 * TODO: For the time being, we don't try to get any attributes
3283 * along with any of the zero-copy operations READ, READDIR,
3286 * In the case of the first three, we want to put the GETATTR
3287 * after the read-type operation -- this is because it is hard
3288 * to predict the length of a GETATTR response in v4, and thus
3289 * align the READ data correctly. This means that the GETATTR
3290 * may end up partially falling into the page cache, and we should
3291 * shift it into the 'tail' of the xdr_buf before processing.
3292 * To do this efficiently, we need to know the total length
3293 * of data received, which doesn't seem to be available outside
3296 * In the case of WRITE, we also want to put the GETATTR after
3297 * the operation -- in this case because we want to make sure
3298 * we get the post-operation mtime and size.
3300 * Both of these changes to the XDR layer would in fact be quite
3301 * minor, but I decided to leave them for a subsequent patch.
3303 static int _nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
3304 unsigned int pgbase
, unsigned int pglen
)
3306 struct nfs4_readlink args
= {
3307 .fh
= NFS_FH(inode
),
3312 struct nfs4_readlink_res res
;
3313 struct rpc_message msg
= {
3314 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READLINK
],
3319 return nfs4_call_sync(NFS_SERVER(inode
)->client
, NFS_SERVER(inode
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3322 static int nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
3323 unsigned int pgbase
, unsigned int pglen
)
3325 struct nfs4_exception exception
= { };
3328 err
= _nfs4_proc_readlink(inode
, page
, pgbase
, pglen
);
3329 trace_nfs4_readlink(inode
, err
);
3330 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
3332 } while (exception
.retry
);
3337 * This is just for mknod. open(O_CREAT) will always do ->open_context().
3340 nfs4_proc_create(struct inode
*dir
, struct dentry
*dentry
, struct iattr
*sattr
,
3343 struct nfs4_label l
, *ilabel
= NULL
;
3344 struct nfs_open_context
*ctx
;
3345 struct nfs4_state
*state
;
3349 ctx
= alloc_nfs_open_context(dentry
, FMODE_READ
);
3351 return PTR_ERR(ctx
);
3353 ilabel
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
3355 sattr
->ia_mode
&= ~current_umask();
3356 state
= nfs4_do_open(dir
, ctx
, flags
, sattr
, ilabel
, &opened
);
3357 if (IS_ERR(state
)) {
3358 status
= PTR_ERR(state
);
3362 nfs4_label_release_security(ilabel
);
3363 put_nfs_open_context(ctx
);
3367 static int _nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
3369 struct nfs_server
*server
= NFS_SERVER(dir
);
3370 struct nfs_removeargs args
= {
3374 struct nfs_removeres res
= {
3377 struct rpc_message msg
= {
3378 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
],
3384 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 1);
3386 update_changeattr(dir
, &res
.cinfo
);
3390 static int nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
3392 struct nfs4_exception exception
= { };
3395 err
= _nfs4_proc_remove(dir
, name
);
3396 trace_nfs4_remove(dir
, name
, err
);
3397 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
3399 } while (exception
.retry
);
3403 static void nfs4_proc_unlink_setup(struct rpc_message
*msg
, struct inode
*dir
)
3405 struct nfs_server
*server
= NFS_SERVER(dir
);
3406 struct nfs_removeargs
*args
= msg
->rpc_argp
;
3407 struct nfs_removeres
*res
= msg
->rpc_resp
;
3409 res
->server
= server
;
3410 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
];
3411 nfs4_init_sequence(&args
->seq_args
, &res
->seq_res
, 1);
3413 nfs_fattr_init(res
->dir_attr
);
3416 static void nfs4_proc_unlink_rpc_prepare(struct rpc_task
*task
, struct nfs_unlinkdata
*data
)
3418 nfs4_setup_sequence(NFS_SERVER(data
->dir
),
3419 &data
->args
.seq_args
,
3424 static int nfs4_proc_unlink_done(struct rpc_task
*task
, struct inode
*dir
)
3426 struct nfs_unlinkdata
*data
= task
->tk_calldata
;
3427 struct nfs_removeres
*res
= &data
->res
;
3429 if (!nfs4_sequence_done(task
, &res
->seq_res
))
3431 if (nfs4_async_handle_error(task
, res
->server
, NULL
) == -EAGAIN
)
3433 update_changeattr(dir
, &res
->cinfo
);
3437 static void nfs4_proc_rename_setup(struct rpc_message
*msg
, struct inode
*dir
)
3439 struct nfs_server
*server
= NFS_SERVER(dir
);
3440 struct nfs_renameargs
*arg
= msg
->rpc_argp
;
3441 struct nfs_renameres
*res
= msg
->rpc_resp
;
3443 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENAME
];
3444 res
->server
= server
;
3445 nfs4_init_sequence(&arg
->seq_args
, &res
->seq_res
, 1);
3448 static void nfs4_proc_rename_rpc_prepare(struct rpc_task
*task
, struct nfs_renamedata
*data
)
3450 nfs4_setup_sequence(NFS_SERVER(data
->old_dir
),
3451 &data
->args
.seq_args
,
3456 static int nfs4_proc_rename_done(struct rpc_task
*task
, struct inode
*old_dir
,
3457 struct inode
*new_dir
)
3459 struct nfs_renamedata
*data
= task
->tk_calldata
;
3460 struct nfs_renameres
*res
= &data
->res
;
3462 if (!nfs4_sequence_done(task
, &res
->seq_res
))
3464 if (nfs4_async_handle_error(task
, res
->server
, NULL
) == -EAGAIN
)
3467 update_changeattr(old_dir
, &res
->old_cinfo
);
3468 update_changeattr(new_dir
, &res
->new_cinfo
);
3472 static int _nfs4_proc_rename(struct inode
*old_dir
, struct qstr
*old_name
,
3473 struct inode
*new_dir
, struct qstr
*new_name
)
3475 struct nfs_server
*server
= NFS_SERVER(old_dir
);
3476 struct nfs_renameargs arg
= {
3477 .old_dir
= NFS_FH(old_dir
),
3478 .new_dir
= NFS_FH(new_dir
),
3479 .old_name
= old_name
,
3480 .new_name
= new_name
,
3482 struct nfs_renameres res
= {
3485 struct rpc_message msg
= {
3486 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENAME
],
3490 int status
= -ENOMEM
;
3492 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
3494 update_changeattr(old_dir
, &res
.old_cinfo
);
3495 update_changeattr(new_dir
, &res
.new_cinfo
);
3500 static int nfs4_proc_rename(struct inode
*old_dir
, struct qstr
*old_name
,
3501 struct inode
*new_dir
, struct qstr
*new_name
)
3503 struct nfs4_exception exception
= { };
3506 err
= _nfs4_proc_rename(old_dir
, old_name
,
3508 trace_nfs4_rename(old_dir
, old_name
, new_dir
, new_name
, err
);
3509 err
= nfs4_handle_exception(NFS_SERVER(old_dir
), err
,
3511 } while (exception
.retry
);
3515 static int _nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
3517 struct nfs_server
*server
= NFS_SERVER(inode
);
3518 struct nfs4_link_arg arg
= {
3519 .fh
= NFS_FH(inode
),
3520 .dir_fh
= NFS_FH(dir
),
3522 .bitmask
= server
->attr_bitmask
,
3524 struct nfs4_link_res res
= {
3528 struct rpc_message msg
= {
3529 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LINK
],
3533 int status
= -ENOMEM
;
3535 res
.fattr
= nfs_alloc_fattr();
3536 if (res
.fattr
== NULL
)
3539 res
.label
= nfs4_label_alloc(server
, GFP_KERNEL
);
3540 if (IS_ERR(res
.label
)) {
3541 status
= PTR_ERR(res
.label
);
3544 arg
.bitmask
= nfs4_bitmask(server
, res
.label
);
3546 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
3548 update_changeattr(dir
, &res
.cinfo
);
3549 status
= nfs_post_op_update_inode(inode
, res
.fattr
);
3551 nfs_setsecurity(inode
, res
.fattr
, res
.label
);
3555 nfs4_label_free(res
.label
);
3558 nfs_free_fattr(res
.fattr
);
3562 static int nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
3564 struct nfs4_exception exception
= { };
3567 err
= nfs4_handle_exception(NFS_SERVER(inode
),
3568 _nfs4_proc_link(inode
, dir
, name
),
3570 } while (exception
.retry
);
3574 struct nfs4_createdata
{
3575 struct rpc_message msg
;
3576 struct nfs4_create_arg arg
;
3577 struct nfs4_create_res res
;
3579 struct nfs_fattr fattr
;
3580 struct nfs4_label
*label
;
3583 static struct nfs4_createdata
*nfs4_alloc_createdata(struct inode
*dir
,
3584 struct qstr
*name
, struct iattr
*sattr
, u32 ftype
)
3586 struct nfs4_createdata
*data
;
3588 data
= kzalloc(sizeof(*data
), GFP_KERNEL
);
3590 struct nfs_server
*server
= NFS_SERVER(dir
);
3592 data
->label
= nfs4_label_alloc(server
, GFP_KERNEL
);
3593 if (IS_ERR(data
->label
))
3596 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE
];
3597 data
->msg
.rpc_argp
= &data
->arg
;
3598 data
->msg
.rpc_resp
= &data
->res
;
3599 data
->arg
.dir_fh
= NFS_FH(dir
);
3600 data
->arg
.server
= server
;
3601 data
->arg
.name
= name
;
3602 data
->arg
.attrs
= sattr
;
3603 data
->arg
.ftype
= ftype
;
3604 data
->arg
.bitmask
= nfs4_bitmask(server
, data
->label
);
3605 data
->res
.server
= server
;
3606 data
->res
.fh
= &data
->fh
;
3607 data
->res
.fattr
= &data
->fattr
;
3608 data
->res
.label
= data
->label
;
3609 nfs_fattr_init(data
->res
.fattr
);
3617 static int nfs4_do_create(struct inode
*dir
, struct dentry
*dentry
, struct nfs4_createdata
*data
)
3619 int status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &data
->msg
,
3620 &data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
3622 update_changeattr(dir
, &data
->res
.dir_cinfo
);
3623 status
= nfs_instantiate(dentry
, data
->res
.fh
, data
->res
.fattr
, data
->res
.label
);
3628 static void nfs4_free_createdata(struct nfs4_createdata
*data
)
3630 nfs4_label_free(data
->label
);
3634 static int _nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
3635 struct page
*page
, unsigned int len
, struct iattr
*sattr
,
3636 struct nfs4_label
*label
)
3638 struct nfs4_createdata
*data
;
3639 int status
= -ENAMETOOLONG
;
3641 if (len
> NFS4_MAXPATHLEN
)
3645 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4LNK
);
3649 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SYMLINK
];
3650 data
->arg
.u
.symlink
.pages
= &page
;
3651 data
->arg
.u
.symlink
.len
= len
;
3652 data
->arg
.label
= label
;
3654 status
= nfs4_do_create(dir
, dentry
, data
);
3656 nfs4_free_createdata(data
);
3661 static int nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
3662 struct page
*page
, unsigned int len
, struct iattr
*sattr
)
3664 struct nfs4_exception exception
= { };
3665 struct nfs4_label l
, *label
= NULL
;
3668 label
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
3671 err
= _nfs4_proc_symlink(dir
, dentry
, page
, len
, sattr
, label
);
3672 trace_nfs4_symlink(dir
, &dentry
->d_name
, err
);
3673 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
3675 } while (exception
.retry
);
3677 nfs4_label_release_security(label
);
3681 static int _nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
3682 struct iattr
*sattr
, struct nfs4_label
*label
)
3684 struct nfs4_createdata
*data
;
3685 int status
= -ENOMEM
;
3687 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4DIR
);
3691 data
->arg
.label
= label
;
3692 status
= nfs4_do_create(dir
, dentry
, data
);
3694 nfs4_free_createdata(data
);
3699 static int nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
3700 struct iattr
*sattr
)
3702 struct nfs4_exception exception
= { };
3703 struct nfs4_label l
, *label
= NULL
;
3706 label
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
3708 sattr
->ia_mode
&= ~current_umask();
3710 err
= _nfs4_proc_mkdir(dir
, dentry
, sattr
, label
);
3711 trace_nfs4_mkdir(dir
, &dentry
->d_name
, err
);
3712 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
3714 } while (exception
.retry
);
3715 nfs4_label_release_security(label
);
3720 static int _nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
3721 u64 cookie
, struct page
**pages
, unsigned int count
, int plus
)
3723 struct inode
*dir
= dentry
->d_inode
;
3724 struct nfs4_readdir_arg args
= {
3729 .bitmask
= NFS_SERVER(dentry
->d_inode
)->attr_bitmask
,
3732 struct nfs4_readdir_res res
;
3733 struct rpc_message msg
= {
3734 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READDIR
],
3741 dprintk("%s: dentry = %s/%s, cookie = %Lu\n", __func__
,
3742 dentry
->d_parent
->d_name
.name
,
3743 dentry
->d_name
.name
,
3744 (unsigned long long)cookie
);
3745 nfs4_setup_readdir(cookie
, NFS_I(dir
)->cookieverf
, dentry
, &args
);
3746 res
.pgbase
= args
.pgbase
;
3747 status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3749 memcpy(NFS_I(dir
)->cookieverf
, res
.verifier
.data
, NFS4_VERIFIER_SIZE
);
3750 status
+= args
.pgbase
;
3753 nfs_invalidate_atime(dir
);
3755 dprintk("%s: returns %d\n", __func__
, status
);
3759 static int nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
3760 u64 cookie
, struct page
**pages
, unsigned int count
, int plus
)
3762 struct nfs4_exception exception
= { };
3765 err
= _nfs4_proc_readdir(dentry
, cred
, cookie
,
3766 pages
, count
, plus
);
3767 trace_nfs4_readdir(dentry
->d_inode
, err
);
3768 err
= nfs4_handle_exception(NFS_SERVER(dentry
->d_inode
), err
,
3770 } while (exception
.retry
);
3774 static int _nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
3775 struct iattr
*sattr
, struct nfs4_label
*label
, dev_t rdev
)
3777 struct nfs4_createdata
*data
;
3778 int mode
= sattr
->ia_mode
;
3779 int status
= -ENOMEM
;
3781 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4SOCK
);
3786 data
->arg
.ftype
= NF4FIFO
;
3787 else if (S_ISBLK(mode
)) {
3788 data
->arg
.ftype
= NF4BLK
;
3789 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
3790 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
3792 else if (S_ISCHR(mode
)) {
3793 data
->arg
.ftype
= NF4CHR
;
3794 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
3795 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
3796 } else if (!S_ISSOCK(mode
)) {
3801 data
->arg
.label
= label
;
3802 status
= nfs4_do_create(dir
, dentry
, data
);
3804 nfs4_free_createdata(data
);
3809 static int nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
3810 struct iattr
*sattr
, dev_t rdev
)
3812 struct nfs4_exception exception
= { };
3813 struct nfs4_label l
, *label
= NULL
;
3816 label
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
3818 sattr
->ia_mode
&= ~current_umask();
3820 err
= _nfs4_proc_mknod(dir
, dentry
, sattr
, label
, rdev
);
3821 trace_nfs4_mknod(dir
, &dentry
->d_name
, err
);
3822 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
3824 } while (exception
.retry
);
3826 nfs4_label_release_security(label
);
3831 static int _nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3832 struct nfs_fsstat
*fsstat
)
3834 struct nfs4_statfs_arg args
= {
3836 .bitmask
= server
->attr_bitmask
,
3838 struct nfs4_statfs_res res
= {
3841 struct rpc_message msg
= {
3842 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_STATFS
],
3847 nfs_fattr_init(fsstat
->fattr
);
3848 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3851 static int nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsstat
*fsstat
)
3853 struct nfs4_exception exception
= { };
3856 err
= nfs4_handle_exception(server
,
3857 _nfs4_proc_statfs(server
, fhandle
, fsstat
),
3859 } while (exception
.retry
);
3863 static int _nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3864 struct nfs_fsinfo
*fsinfo
)
3866 struct nfs4_fsinfo_arg args
= {
3868 .bitmask
= server
->attr_bitmask
,
3870 struct nfs4_fsinfo_res res
= {
3873 struct rpc_message msg
= {
3874 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSINFO
],
3879 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3882 static int nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
3884 struct nfs4_exception exception
= { };
3885 unsigned long now
= jiffies
;
3889 err
= _nfs4_do_fsinfo(server
, fhandle
, fsinfo
);
3890 trace_nfs4_fsinfo(server
, fhandle
, fsinfo
->fattr
, err
);
3892 struct nfs_client
*clp
= server
->nfs_client
;
3894 spin_lock(&clp
->cl_lock
);
3895 clp
->cl_lease_time
= fsinfo
->lease_time
* HZ
;
3896 clp
->cl_last_renewal
= now
;
3897 spin_unlock(&clp
->cl_lock
);
3900 err
= nfs4_handle_exception(server
, err
, &exception
);
3901 } while (exception
.retry
);
3905 static int nfs4_proc_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
3909 nfs_fattr_init(fsinfo
->fattr
);
3910 error
= nfs4_do_fsinfo(server
, fhandle
, fsinfo
);
3912 /* block layout checks this! */
3913 server
->pnfs_blksize
= fsinfo
->blksize
;
3914 set_pnfs_layoutdriver(server
, fhandle
, fsinfo
->layouttype
);
3920 static int _nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3921 struct nfs_pathconf
*pathconf
)
3923 struct nfs4_pathconf_arg args
= {
3925 .bitmask
= server
->attr_bitmask
,
3927 struct nfs4_pathconf_res res
= {
3928 .pathconf
= pathconf
,
3930 struct rpc_message msg
= {
3931 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_PATHCONF
],
3936 /* None of the pathconf attributes are mandatory to implement */
3937 if ((args
.bitmask
[0] & nfs4_pathconf_bitmap
[0]) == 0) {
3938 memset(pathconf
, 0, sizeof(*pathconf
));
3942 nfs_fattr_init(pathconf
->fattr
);
3943 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3946 static int nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3947 struct nfs_pathconf
*pathconf
)
3949 struct nfs4_exception exception
= { };
3953 err
= nfs4_handle_exception(server
,
3954 _nfs4_proc_pathconf(server
, fhandle
, pathconf
),
3956 } while (exception
.retry
);
3960 int nfs4_set_rw_stateid(nfs4_stateid
*stateid
,
3961 const struct nfs_open_context
*ctx
,
3962 const struct nfs_lock_context
*l_ctx
,
3965 const struct nfs_lockowner
*lockowner
= NULL
;
3968 lockowner
= &l_ctx
->lockowner
;
3969 return nfs4_select_rw_stateid(stateid
, ctx
->state
, fmode
, lockowner
);
3971 EXPORT_SYMBOL_GPL(nfs4_set_rw_stateid
);
3973 static bool nfs4_stateid_is_current(nfs4_stateid
*stateid
,
3974 const struct nfs_open_context
*ctx
,
3975 const struct nfs_lock_context
*l_ctx
,
3978 nfs4_stateid current_stateid
;
3980 if (nfs4_set_rw_stateid(¤t_stateid
, ctx
, l_ctx
, fmode
))
3982 return nfs4_stateid_match(stateid
, ¤t_stateid
);
3985 static bool nfs4_error_stateid_expired(int err
)
3988 case -NFS4ERR_DELEG_REVOKED
:
3989 case -NFS4ERR_ADMIN_REVOKED
:
3990 case -NFS4ERR_BAD_STATEID
:
3991 case -NFS4ERR_STALE_STATEID
:
3992 case -NFS4ERR_OLD_STATEID
:
3993 case -NFS4ERR_OPENMODE
:
3994 case -NFS4ERR_EXPIRED
:
4000 void __nfs4_read_done_cb(struct nfs_read_data
*data
)
4002 nfs_invalidate_atime(data
->header
->inode
);
4005 static int nfs4_read_done_cb(struct rpc_task
*task
, struct nfs_read_data
*data
)
4007 struct nfs_server
*server
= NFS_SERVER(data
->header
->inode
);
4009 trace_nfs4_read(data
, task
->tk_status
);
4010 if (nfs4_async_handle_error(task
, server
, data
->args
.context
->state
) == -EAGAIN
) {
4011 rpc_restart_call_prepare(task
);
4015 __nfs4_read_done_cb(data
);
4016 if (task
->tk_status
> 0)
4017 renew_lease(server
, data
->timestamp
);
4021 static bool nfs4_read_stateid_changed(struct rpc_task
*task
,
4022 struct nfs_readargs
*args
)
4025 if (!nfs4_error_stateid_expired(task
->tk_status
) ||
4026 nfs4_stateid_is_current(&args
->stateid
,
4031 rpc_restart_call_prepare(task
);
4035 static int nfs4_read_done(struct rpc_task
*task
, struct nfs_read_data
*data
)
4038 dprintk("--> %s\n", __func__
);
4040 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
4042 if (nfs4_read_stateid_changed(task
, &data
->args
))
4044 return data
->read_done_cb
? data
->read_done_cb(task
, data
) :
4045 nfs4_read_done_cb(task
, data
);
4048 static void nfs4_proc_read_setup(struct nfs_read_data
*data
, struct rpc_message
*msg
)
4050 data
->timestamp
= jiffies
;
4051 data
->read_done_cb
= nfs4_read_done_cb
;
4052 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READ
];
4053 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 0);
4056 static int nfs4_proc_read_rpc_prepare(struct rpc_task
*task
, struct nfs_read_data
*data
)
4058 if (nfs4_setup_sequence(NFS_SERVER(data
->header
->inode
),
4059 &data
->args
.seq_args
,
4063 if (nfs4_set_rw_stateid(&data
->args
.stateid
, data
->args
.context
,
4064 data
->args
.lock_context
, FMODE_READ
) == -EIO
)
4066 if (unlikely(test_bit(NFS_CONTEXT_BAD
, &data
->args
.context
->flags
)))
4071 static int nfs4_write_done_cb(struct rpc_task
*task
, struct nfs_write_data
*data
)
4073 struct inode
*inode
= data
->header
->inode
;
4075 trace_nfs4_write(data
, task
->tk_status
);
4076 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
), data
->args
.context
->state
) == -EAGAIN
) {
4077 rpc_restart_call_prepare(task
);
4080 if (task
->tk_status
>= 0) {
4081 renew_lease(NFS_SERVER(inode
), data
->timestamp
);
4082 nfs_post_op_update_inode_force_wcc(inode
, &data
->fattr
);
4087 static bool nfs4_write_stateid_changed(struct rpc_task
*task
,
4088 struct nfs_writeargs
*args
)
4091 if (!nfs4_error_stateid_expired(task
->tk_status
) ||
4092 nfs4_stateid_is_current(&args
->stateid
,
4097 rpc_restart_call_prepare(task
);
4101 static int nfs4_write_done(struct rpc_task
*task
, struct nfs_write_data
*data
)
4103 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
4105 if (nfs4_write_stateid_changed(task
, &data
->args
))
4107 return data
->write_done_cb
? data
->write_done_cb(task
, data
) :
4108 nfs4_write_done_cb(task
, data
);
4112 bool nfs4_write_need_cache_consistency_data(const struct nfs_write_data
*data
)
4114 const struct nfs_pgio_header
*hdr
= data
->header
;
4116 /* Don't request attributes for pNFS or O_DIRECT writes */
4117 if (data
->ds_clp
!= NULL
|| hdr
->dreq
!= NULL
)
4119 /* Otherwise, request attributes if and only if we don't hold
4122 return nfs4_have_delegation(hdr
->inode
, FMODE_READ
) == 0;
4125 static void nfs4_proc_write_setup(struct nfs_write_data
*data
, struct rpc_message
*msg
)
4127 struct nfs_server
*server
= NFS_SERVER(data
->header
->inode
);
4129 if (!nfs4_write_need_cache_consistency_data(data
)) {
4130 data
->args
.bitmask
= NULL
;
4131 data
->res
.fattr
= NULL
;
4133 data
->args
.bitmask
= server
->cache_consistency_bitmask
;
4135 if (!data
->write_done_cb
)
4136 data
->write_done_cb
= nfs4_write_done_cb
;
4137 data
->res
.server
= server
;
4138 data
->timestamp
= jiffies
;
4140 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_WRITE
];
4141 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
4144 static int nfs4_proc_write_rpc_prepare(struct rpc_task
*task
, struct nfs_write_data
*data
)
4146 if (nfs4_setup_sequence(NFS_SERVER(data
->header
->inode
),
4147 &data
->args
.seq_args
,
4151 if (nfs4_set_rw_stateid(&data
->args
.stateid
, data
->args
.context
,
4152 data
->args
.lock_context
, FMODE_WRITE
) == -EIO
)
4154 if (unlikely(test_bit(NFS_CONTEXT_BAD
, &data
->args
.context
->flags
)))
4159 static void nfs4_proc_commit_rpc_prepare(struct rpc_task
*task
, struct nfs_commit_data
*data
)
4161 nfs4_setup_sequence(NFS_SERVER(data
->inode
),
4162 &data
->args
.seq_args
,
4167 static int nfs4_commit_done_cb(struct rpc_task
*task
, struct nfs_commit_data
*data
)
4169 struct inode
*inode
= data
->inode
;
4171 trace_nfs4_commit(data
, task
->tk_status
);
4172 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
), NULL
) == -EAGAIN
) {
4173 rpc_restart_call_prepare(task
);
4179 static int nfs4_commit_done(struct rpc_task
*task
, struct nfs_commit_data
*data
)
4181 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
4183 return data
->commit_done_cb(task
, data
);
4186 static void nfs4_proc_commit_setup(struct nfs_commit_data
*data
, struct rpc_message
*msg
)
4188 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
4190 if (data
->commit_done_cb
== NULL
)
4191 data
->commit_done_cb
= nfs4_commit_done_cb
;
4192 data
->res
.server
= server
;
4193 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_COMMIT
];
4194 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
4197 struct nfs4_renewdata
{
4198 struct nfs_client
*client
;
4199 unsigned long timestamp
;
4203 * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special
4204 * standalone procedure for queueing an asynchronous RENEW.
4206 static void nfs4_renew_release(void *calldata
)
4208 struct nfs4_renewdata
*data
= calldata
;
4209 struct nfs_client
*clp
= data
->client
;
4211 if (atomic_read(&clp
->cl_count
) > 1)
4212 nfs4_schedule_state_renewal(clp
);
4213 nfs_put_client(clp
);
4217 static void nfs4_renew_done(struct rpc_task
*task
, void *calldata
)
4219 struct nfs4_renewdata
*data
= calldata
;
4220 struct nfs_client
*clp
= data
->client
;
4221 unsigned long timestamp
= data
->timestamp
;
4223 trace_nfs4_renew_async(clp
, task
->tk_status
);
4224 if (task
->tk_status
< 0) {
4225 /* Unless we're shutting down, schedule state recovery! */
4226 if (test_bit(NFS_CS_RENEWD
, &clp
->cl_res_state
) == 0)
4228 if (task
->tk_status
!= NFS4ERR_CB_PATH_DOWN
) {
4229 nfs4_schedule_lease_recovery(clp
);
4232 nfs4_schedule_path_down_recovery(clp
);
4234 do_renew_lease(clp
, timestamp
);
4237 static const struct rpc_call_ops nfs4_renew_ops
= {
4238 .rpc_call_done
= nfs4_renew_done
,
4239 .rpc_release
= nfs4_renew_release
,
4242 static int nfs4_proc_async_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
, unsigned renew_flags
)
4244 struct rpc_message msg
= {
4245 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
4249 struct nfs4_renewdata
*data
;
4251 if (renew_flags
== 0)
4253 if (!atomic_inc_not_zero(&clp
->cl_count
))
4255 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
4259 data
->timestamp
= jiffies
;
4260 return rpc_call_async(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
,
4261 &nfs4_renew_ops
, data
);
4264 static int nfs4_proc_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
)
4266 struct rpc_message msg
= {
4267 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
4271 unsigned long now
= jiffies
;
4274 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
4277 do_renew_lease(clp
, now
);
4281 static inline int nfs4_server_supports_acls(struct nfs_server
*server
)
4283 return (server
->caps
& NFS_CAP_ACLS
)
4284 && (server
->acl_bitmask
& ACL4_SUPPORT_ALLOW_ACL
)
4285 && (server
->acl_bitmask
& ACL4_SUPPORT_DENY_ACL
);
4288 /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_SIZE, and that
4289 * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_SIZE) bytes on
4292 #define NFS4ACL_MAXPAGES DIV_ROUND_UP(XATTR_SIZE_MAX, PAGE_SIZE)
4294 static int buf_to_pages_noslab(const void *buf
, size_t buflen
,
4295 struct page
**pages
, unsigned int *pgbase
)
4297 struct page
*newpage
, **spages
;
4303 len
= min_t(size_t, PAGE_SIZE
, buflen
);
4304 newpage
= alloc_page(GFP_KERNEL
);
4306 if (newpage
== NULL
)
4308 memcpy(page_address(newpage
), buf
, len
);
4313 } while (buflen
!= 0);
4319 __free_page(spages
[rc
-1]);
4323 struct nfs4_cached_acl
{
4329 static void nfs4_set_cached_acl(struct inode
*inode
, struct nfs4_cached_acl
*acl
)
4331 struct nfs_inode
*nfsi
= NFS_I(inode
);
4333 spin_lock(&inode
->i_lock
);
4334 kfree(nfsi
->nfs4_acl
);
4335 nfsi
->nfs4_acl
= acl
;
4336 spin_unlock(&inode
->i_lock
);
4339 static void nfs4_zap_acl_attr(struct inode
*inode
)
4341 nfs4_set_cached_acl(inode
, NULL
);
4344 static inline ssize_t
nfs4_read_cached_acl(struct inode
*inode
, char *buf
, size_t buflen
)
4346 struct nfs_inode
*nfsi
= NFS_I(inode
);
4347 struct nfs4_cached_acl
*acl
;
4350 spin_lock(&inode
->i_lock
);
4351 acl
= nfsi
->nfs4_acl
;
4354 if (buf
== NULL
) /* user is just asking for length */
4356 if (acl
->cached
== 0)
4358 ret
= -ERANGE
; /* see getxattr(2) man page */
4359 if (acl
->len
> buflen
)
4361 memcpy(buf
, acl
->data
, acl
->len
);
4365 spin_unlock(&inode
->i_lock
);
4369 static void nfs4_write_cached_acl(struct inode
*inode
, struct page
**pages
, size_t pgbase
, size_t acl_len
)
4371 struct nfs4_cached_acl
*acl
;
4372 size_t buflen
= sizeof(*acl
) + acl_len
;
4374 if (buflen
<= PAGE_SIZE
) {
4375 acl
= kmalloc(buflen
, GFP_KERNEL
);
4379 _copy_from_pages(acl
->data
, pages
, pgbase
, acl_len
);
4381 acl
= kmalloc(sizeof(*acl
), GFP_KERNEL
);
4388 nfs4_set_cached_acl(inode
, acl
);
4392 * The getxattr API returns the required buffer length when called with a
4393 * NULL buf. The NFSv4 acl tool then calls getxattr again after allocating
4394 * the required buf. On a NULL buf, we send a page of data to the server
4395 * guessing that the ACL request can be serviced by a page. If so, we cache
4396 * up to the page of ACL data, and the 2nd call to getxattr is serviced by
4397 * the cache. If not so, we throw away the page, and cache the required
4398 * length. The next getxattr call will then produce another round trip to
4399 * the server, this time with the input buf of the required size.
4401 static ssize_t
__nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
4403 struct page
*pages
[NFS4ACL_MAXPAGES
] = {NULL
, };
4404 struct nfs_getaclargs args
= {
4405 .fh
= NFS_FH(inode
),
4409 struct nfs_getaclres res
= {
4412 struct rpc_message msg
= {
4413 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETACL
],
4417 unsigned int npages
= DIV_ROUND_UP(buflen
, PAGE_SIZE
);
4418 int ret
= -ENOMEM
, i
;
4420 /* As long as we're doing a round trip to the server anyway,
4421 * let's be prepared for a page of acl data. */
4424 if (npages
> ARRAY_SIZE(pages
))
4427 for (i
= 0; i
< npages
; i
++) {
4428 pages
[i
] = alloc_page(GFP_KERNEL
);
4433 /* for decoding across pages */
4434 res
.acl_scratch
= alloc_page(GFP_KERNEL
);
4435 if (!res
.acl_scratch
)
4438 args
.acl_len
= npages
* PAGE_SIZE
;
4439 args
.acl_pgbase
= 0;
4441 dprintk("%s buf %p buflen %zu npages %d args.acl_len %zu\n",
4442 __func__
, buf
, buflen
, npages
, args
.acl_len
);
4443 ret
= nfs4_call_sync(NFS_SERVER(inode
)->client
, NFS_SERVER(inode
),
4444 &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4448 /* Handle the case where the passed-in buffer is too short */
4449 if (res
.acl_flags
& NFS4_ACL_TRUNC
) {
4450 /* Did the user only issue a request for the acl length? */
4456 nfs4_write_cached_acl(inode
, pages
, res
.acl_data_offset
, res
.acl_len
);
4458 if (res
.acl_len
> buflen
) {
4462 _copy_from_pages(buf
, pages
, res
.acl_data_offset
, res
.acl_len
);
4467 for (i
= 0; i
< npages
; i
++)
4469 __free_page(pages
[i
]);
4470 if (res
.acl_scratch
)
4471 __free_page(res
.acl_scratch
);
4475 static ssize_t
nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
4477 struct nfs4_exception exception
= { };
4480 ret
= __nfs4_get_acl_uncached(inode
, buf
, buflen
);
4481 trace_nfs4_get_acl(inode
, ret
);
4484 ret
= nfs4_handle_exception(NFS_SERVER(inode
), ret
, &exception
);
4485 } while (exception
.retry
);
4489 static ssize_t
nfs4_proc_get_acl(struct inode
*inode
, void *buf
, size_t buflen
)
4491 struct nfs_server
*server
= NFS_SERVER(inode
);
4494 if (!nfs4_server_supports_acls(server
))
4496 ret
= nfs_revalidate_inode(server
, inode
);
4499 if (NFS_I(inode
)->cache_validity
& NFS_INO_INVALID_ACL
)
4500 nfs_zap_acl_cache(inode
);
4501 ret
= nfs4_read_cached_acl(inode
, buf
, buflen
);
4503 /* -ENOENT is returned if there is no ACL or if there is an ACL
4504 * but no cached acl data, just the acl length */
4506 return nfs4_get_acl_uncached(inode
, buf
, buflen
);
4509 static int __nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
4511 struct nfs_server
*server
= NFS_SERVER(inode
);
4512 struct page
*pages
[NFS4ACL_MAXPAGES
];
4513 struct nfs_setaclargs arg
= {
4514 .fh
= NFS_FH(inode
),
4518 struct nfs_setaclres res
;
4519 struct rpc_message msg
= {
4520 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETACL
],
4524 unsigned int npages
= DIV_ROUND_UP(buflen
, PAGE_SIZE
);
4527 if (!nfs4_server_supports_acls(server
))
4529 if (npages
> ARRAY_SIZE(pages
))
4531 i
= buf_to_pages_noslab(buf
, buflen
, arg
.acl_pages
, &arg
.acl_pgbase
);
4534 nfs4_inode_return_delegation(inode
);
4535 ret
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
4538 * Free each page after tx, so the only ref left is
4539 * held by the network stack
4542 put_page(pages
[i
-1]);
4545 * Acl update can result in inode attribute update.
4546 * so mark the attribute cache invalid.
4548 spin_lock(&inode
->i_lock
);
4549 NFS_I(inode
)->cache_validity
|= NFS_INO_INVALID_ATTR
;
4550 spin_unlock(&inode
->i_lock
);
4551 nfs_access_zap_cache(inode
);
4552 nfs_zap_acl_cache(inode
);
4556 static int nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
4558 struct nfs4_exception exception
= { };
4561 err
= __nfs4_proc_set_acl(inode
, buf
, buflen
);
4562 trace_nfs4_set_acl(inode
, err
);
4563 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
4565 } while (exception
.retry
);
4569 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
4570 static int _nfs4_get_security_label(struct inode
*inode
, void *buf
,
4573 struct nfs_server
*server
= NFS_SERVER(inode
);
4574 struct nfs_fattr fattr
;
4575 struct nfs4_label label
= {0, 0, buflen
, buf
};
4577 u32 bitmask
[3] = { 0, 0, FATTR4_WORD2_SECURITY_LABEL
};
4578 struct nfs4_getattr_arg args
= {
4579 .fh
= NFS_FH(inode
),
4582 struct nfs4_getattr_res res
= {
4587 struct rpc_message msg
= {
4588 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETATTR
],
4594 nfs_fattr_init(&fattr
);
4596 ret
= rpc_call_sync(server
->client
, &msg
, 0);
4599 if (!(fattr
.valid
& NFS_ATTR_FATTR_V4_SECURITY_LABEL
))
4601 if (buflen
< label
.len
)
4606 static int nfs4_get_security_label(struct inode
*inode
, void *buf
,
4609 struct nfs4_exception exception
= { };
4612 if (!nfs_server_capable(inode
, NFS_CAP_SECURITY_LABEL
))
4616 err
= _nfs4_get_security_label(inode
, buf
, buflen
);
4617 trace_nfs4_get_security_label(inode
, err
);
4618 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
4620 } while (exception
.retry
);
4624 static int _nfs4_do_set_security_label(struct inode
*inode
,
4625 struct nfs4_label
*ilabel
,
4626 struct nfs_fattr
*fattr
,
4627 struct nfs4_label
*olabel
)
4630 struct iattr sattr
= {0};
4631 struct nfs_server
*server
= NFS_SERVER(inode
);
4632 const u32 bitmask
[3] = { 0, 0, FATTR4_WORD2_SECURITY_LABEL
};
4633 struct nfs_setattrargs args
= {
4634 .fh
= NFS_FH(inode
),
4640 struct nfs_setattrres res
= {
4645 struct rpc_message msg
= {
4646 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETATTR
],
4652 nfs4_stateid_copy(&args
.stateid
, &zero_stateid
);
4654 status
= rpc_call_sync(server
->client
, &msg
, 0);
4656 dprintk("%s failed: %d\n", __func__
, status
);
4661 static int nfs4_do_set_security_label(struct inode
*inode
,
4662 struct nfs4_label
*ilabel
,
4663 struct nfs_fattr
*fattr
,
4664 struct nfs4_label
*olabel
)
4666 struct nfs4_exception exception
= { };
4670 err
= _nfs4_do_set_security_label(inode
, ilabel
,
4672 trace_nfs4_set_security_label(inode
, err
);
4673 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
4675 } while (exception
.retry
);
4680 nfs4_set_security_label(struct dentry
*dentry
, const void *buf
, size_t buflen
)
4682 struct nfs4_label ilabel
, *olabel
= NULL
;
4683 struct nfs_fattr fattr
;
4684 struct rpc_cred
*cred
;
4685 struct inode
*inode
= dentry
->d_inode
;
4688 if (!nfs_server_capable(inode
, NFS_CAP_SECURITY_LABEL
))
4691 nfs_fattr_init(&fattr
);
4695 ilabel
.label
= (char *)buf
;
4696 ilabel
.len
= buflen
;
4698 cred
= rpc_lookup_cred();
4700 return PTR_ERR(cred
);
4702 olabel
= nfs4_label_alloc(NFS_SERVER(inode
), GFP_KERNEL
);
4703 if (IS_ERR(olabel
)) {
4704 status
= -PTR_ERR(olabel
);
4708 status
= nfs4_do_set_security_label(inode
, &ilabel
, &fattr
, olabel
);
4710 nfs_setsecurity(inode
, &fattr
, olabel
);
4712 nfs4_label_free(olabel
);
4717 #endif /* CONFIG_NFS_V4_SECURITY_LABEL */
4721 nfs4_async_handle_error(struct rpc_task
*task
, const struct nfs_server
*server
, struct nfs4_state
*state
)
4723 struct nfs_client
*clp
= server
->nfs_client
;
4725 if (task
->tk_status
>= 0)
4727 switch(task
->tk_status
) {
4728 case -NFS4ERR_DELEG_REVOKED
:
4729 case -NFS4ERR_ADMIN_REVOKED
:
4730 case -NFS4ERR_BAD_STATEID
:
4733 nfs_remove_bad_delegation(state
->inode
);
4734 case -NFS4ERR_OPENMODE
:
4737 if (nfs4_schedule_stateid_recovery(server
, state
) < 0)
4738 goto stateid_invalid
;
4739 goto wait_on_recovery
;
4740 case -NFS4ERR_EXPIRED
:
4741 if (state
!= NULL
) {
4742 if (nfs4_schedule_stateid_recovery(server
, state
) < 0)
4743 goto stateid_invalid
;
4745 case -NFS4ERR_STALE_STATEID
:
4746 case -NFS4ERR_STALE_CLIENTID
:
4747 nfs4_schedule_lease_recovery(clp
);
4748 goto wait_on_recovery
;
4749 #if defined(CONFIG_NFS_V4_1)
4750 case -NFS4ERR_BADSESSION
:
4751 case -NFS4ERR_BADSLOT
:
4752 case -NFS4ERR_BAD_HIGH_SLOT
:
4753 case -NFS4ERR_DEADSESSION
:
4754 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
4755 case -NFS4ERR_SEQ_FALSE_RETRY
:
4756 case -NFS4ERR_SEQ_MISORDERED
:
4757 dprintk("%s ERROR %d, Reset session\n", __func__
,
4759 nfs4_schedule_session_recovery(clp
->cl_session
, task
->tk_status
);
4760 task
->tk_status
= 0;
4762 #endif /* CONFIG_NFS_V4_1 */
4763 case -NFS4ERR_DELAY
:
4764 nfs_inc_server_stats(server
, NFSIOS_DELAY
);
4765 case -NFS4ERR_GRACE
:
4766 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
4767 task
->tk_status
= 0;
4769 case -NFS4ERR_RETRY_UNCACHED_REP
:
4770 case -NFS4ERR_OLD_STATEID
:
4771 task
->tk_status
= 0;
4774 task
->tk_status
= nfs4_map_errors(task
->tk_status
);
4777 task
->tk_status
= -EIO
;
4780 rpc_sleep_on(&clp
->cl_rpcwaitq
, task
, NULL
);
4781 if (test_bit(NFS4CLNT_MANAGER_RUNNING
, &clp
->cl_state
) == 0)
4782 rpc_wake_up_queued_task(&clp
->cl_rpcwaitq
, task
);
4783 task
->tk_status
= 0;
4787 static void nfs4_init_boot_verifier(const struct nfs_client
*clp
,
4788 nfs4_verifier
*bootverf
)
4792 if (test_bit(NFS4CLNT_PURGE_STATE
, &clp
->cl_state
)) {
4793 /* An impossible timestamp guarantees this value
4794 * will never match a generated boot time. */
4796 verf
[1] = cpu_to_be32(NSEC_PER_SEC
+ 1);
4798 struct nfs_net
*nn
= net_generic(clp
->cl_net
, nfs_net_id
);
4799 verf
[0] = cpu_to_be32(nn
->boot_time
.tv_sec
);
4800 verf
[1] = cpu_to_be32(nn
->boot_time
.tv_nsec
);
4802 memcpy(bootverf
->data
, verf
, sizeof(bootverf
->data
));
4806 nfs4_init_nonuniform_client_string(const struct nfs_client
*clp
,
4807 char *buf
, size_t len
)
4809 unsigned int result
;
4812 result
= scnprintf(buf
, len
, "Linux NFSv4.0 %s/%s %s",
4814 rpc_peeraddr2str(clp
->cl_rpcclient
,
4816 rpc_peeraddr2str(clp
->cl_rpcclient
,
4817 RPC_DISPLAY_PROTO
));
4823 nfs4_init_uniform_client_string(const struct nfs_client
*clp
,
4824 char *buf
, size_t len
)
4826 const char *nodename
= clp
->cl_rpcclient
->cl_nodename
;
4828 if (nfs4_client_id_uniquifier
[0] != '\0')
4829 return scnprintf(buf
, len
, "Linux NFSv%u.%u %s/%s",
4830 clp
->rpc_ops
->version
,
4831 clp
->cl_minorversion
,
4832 nfs4_client_id_uniquifier
,
4834 return scnprintf(buf
, len
, "Linux NFSv%u.%u %s",
4835 clp
->rpc_ops
->version
, clp
->cl_minorversion
,
4840 * nfs4_proc_setclientid - Negotiate client ID
4841 * @clp: state data structure
4842 * @program: RPC program for NFSv4 callback service
4843 * @port: IP port number for NFS4 callback service
4844 * @cred: RPC credential to use for this call
4845 * @res: where to place the result
4847 * Returns zero, a negative errno, or a negative NFS4ERR status code.
4849 int nfs4_proc_setclientid(struct nfs_client
*clp
, u32 program
,
4850 unsigned short port
, struct rpc_cred
*cred
,
4851 struct nfs4_setclientid_res
*res
)
4853 nfs4_verifier sc_verifier
;
4854 struct nfs4_setclientid setclientid
= {
4855 .sc_verifier
= &sc_verifier
,
4857 .sc_cb_ident
= clp
->cl_cb_ident
,
4859 struct rpc_message msg
= {
4860 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID
],
4861 .rpc_argp
= &setclientid
,
4867 /* nfs_client_id4 */
4868 nfs4_init_boot_verifier(clp
, &sc_verifier
);
4869 if (test_bit(NFS_CS_MIGRATION
, &clp
->cl_flags
))
4870 setclientid
.sc_name_len
=
4871 nfs4_init_uniform_client_string(clp
,
4872 setclientid
.sc_name
,
4873 sizeof(setclientid
.sc_name
));
4875 setclientid
.sc_name_len
=
4876 nfs4_init_nonuniform_client_string(clp
,
4877 setclientid
.sc_name
,
4878 sizeof(setclientid
.sc_name
));
4881 setclientid
.sc_netid_len
= scnprintf(setclientid
.sc_netid
,
4882 sizeof(setclientid
.sc_netid
), "%s",
4883 rpc_peeraddr2str(clp
->cl_rpcclient
,
4884 RPC_DISPLAY_NETID
));
4886 setclientid
.sc_uaddr_len
= scnprintf(setclientid
.sc_uaddr
,
4887 sizeof(setclientid
.sc_uaddr
), "%s.%u.%u",
4888 clp
->cl_ipaddr
, port
>> 8, port
& 255);
4890 dprintk("NFS call setclientid auth=%s, '%.*s'\n",
4891 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
4892 setclientid
.sc_name_len
, setclientid
.sc_name
);
4893 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
4894 trace_nfs4_setclientid(clp
, status
);
4895 dprintk("NFS reply setclientid: %d\n", status
);
4900 * nfs4_proc_setclientid_confirm - Confirm client ID
4901 * @clp: state data structure
4902 * @res: result of a previous SETCLIENTID
4903 * @cred: RPC credential to use for this call
4905 * Returns zero, a negative errno, or a negative NFS4ERR status code.
4907 int nfs4_proc_setclientid_confirm(struct nfs_client
*clp
,
4908 struct nfs4_setclientid_res
*arg
,
4909 struct rpc_cred
*cred
)
4911 struct rpc_message msg
= {
4912 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID_CONFIRM
],
4918 dprintk("NFS call setclientid_confirm auth=%s, (client ID %llx)\n",
4919 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
4921 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
4922 trace_nfs4_setclientid_confirm(clp
, status
);
4923 dprintk("NFS reply setclientid_confirm: %d\n", status
);
4927 struct nfs4_delegreturndata
{
4928 struct nfs4_delegreturnargs args
;
4929 struct nfs4_delegreturnres res
;
4931 nfs4_stateid stateid
;
4932 unsigned long timestamp
;
4933 struct nfs_fattr fattr
;
4937 static void nfs4_delegreturn_done(struct rpc_task
*task
, void *calldata
)
4939 struct nfs4_delegreturndata
*data
= calldata
;
4941 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
4944 trace_nfs4_delegreturn_exit(&data
->args
, &data
->res
, task
->tk_status
);
4945 switch (task
->tk_status
) {
4946 case -NFS4ERR_STALE_STATEID
:
4947 case -NFS4ERR_EXPIRED
:
4949 renew_lease(data
->res
.server
, data
->timestamp
);
4952 if (nfs4_async_handle_error(task
, data
->res
.server
, NULL
) ==
4954 rpc_restart_call_prepare(task
);
4958 data
->rpc_status
= task
->tk_status
;
4961 static void nfs4_delegreturn_release(void *calldata
)
4966 static void nfs4_delegreturn_prepare(struct rpc_task
*task
, void *data
)
4968 struct nfs4_delegreturndata
*d_data
;
4970 d_data
= (struct nfs4_delegreturndata
*)data
;
4972 nfs4_setup_sequence(d_data
->res
.server
,
4973 &d_data
->args
.seq_args
,
4974 &d_data
->res
.seq_res
,
4978 static const struct rpc_call_ops nfs4_delegreturn_ops
= {
4979 .rpc_call_prepare
= nfs4_delegreturn_prepare
,
4980 .rpc_call_done
= nfs4_delegreturn_done
,
4981 .rpc_release
= nfs4_delegreturn_release
,
4984 static int _nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
4986 struct nfs4_delegreturndata
*data
;
4987 struct nfs_server
*server
= NFS_SERVER(inode
);
4988 struct rpc_task
*task
;
4989 struct rpc_message msg
= {
4990 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DELEGRETURN
],
4993 struct rpc_task_setup task_setup_data
= {
4994 .rpc_client
= server
->client
,
4995 .rpc_message
= &msg
,
4996 .callback_ops
= &nfs4_delegreturn_ops
,
4997 .flags
= RPC_TASK_ASYNC
,
5001 data
= kzalloc(sizeof(*data
), GFP_NOFS
);
5004 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
5005 data
->args
.fhandle
= &data
->fh
;
5006 data
->args
.stateid
= &data
->stateid
;
5007 data
->args
.bitmask
= server
->cache_consistency_bitmask
;
5008 nfs_copy_fh(&data
->fh
, NFS_FH(inode
));
5009 nfs4_stateid_copy(&data
->stateid
, stateid
);
5010 data
->res
.fattr
= &data
->fattr
;
5011 data
->res
.server
= server
;
5012 nfs_fattr_init(data
->res
.fattr
);
5013 data
->timestamp
= jiffies
;
5014 data
->rpc_status
= 0;
5016 task_setup_data
.callback_data
= data
;
5017 msg
.rpc_argp
= &data
->args
;
5018 msg
.rpc_resp
= &data
->res
;
5019 task
= rpc_run_task(&task_setup_data
);
5021 return PTR_ERR(task
);
5024 status
= nfs4_wait_for_completion_rpc_task(task
);
5027 status
= data
->rpc_status
;
5029 nfs_post_op_update_inode_force_wcc(inode
, &data
->fattr
);
5031 nfs_refresh_inode(inode
, &data
->fattr
);
5037 int nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
5039 struct nfs_server
*server
= NFS_SERVER(inode
);
5040 struct nfs4_exception exception
= { };
5043 err
= _nfs4_proc_delegreturn(inode
, cred
, stateid
, issync
);
5044 trace_nfs4_delegreturn(inode
, err
);
5046 case -NFS4ERR_STALE_STATEID
:
5047 case -NFS4ERR_EXPIRED
:
5051 err
= nfs4_handle_exception(server
, err
, &exception
);
5052 } while (exception
.retry
);
5056 #define NFS4_LOCK_MINTIMEOUT (1 * HZ)
5057 #define NFS4_LOCK_MAXTIMEOUT (30 * HZ)
5060 * sleep, with exponential backoff, and retry the LOCK operation.
5062 static unsigned long
5063 nfs4_set_lock_task_retry(unsigned long timeout
)
5065 freezable_schedule_timeout_killable_unsafe(timeout
);
5067 if (timeout
> NFS4_LOCK_MAXTIMEOUT
)
5068 return NFS4_LOCK_MAXTIMEOUT
;
5072 static int _nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5074 struct inode
*inode
= state
->inode
;
5075 struct nfs_server
*server
= NFS_SERVER(inode
);
5076 struct nfs_client
*clp
= server
->nfs_client
;
5077 struct nfs_lockt_args arg
= {
5078 .fh
= NFS_FH(inode
),
5081 struct nfs_lockt_res res
= {
5084 struct rpc_message msg
= {
5085 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKT
],
5088 .rpc_cred
= state
->owner
->so_cred
,
5090 struct nfs4_lock_state
*lsp
;
5093 arg
.lock_owner
.clientid
= clp
->cl_clientid
;
5094 status
= nfs4_set_lock_state(state
, request
);
5097 lsp
= request
->fl_u
.nfs4_fl
.owner
;
5098 arg
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
5099 arg
.lock_owner
.s_dev
= server
->s_dev
;
5100 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
5103 request
->fl_type
= F_UNLCK
;
5105 case -NFS4ERR_DENIED
:
5108 request
->fl_ops
->fl_release_private(request
);
5113 static int nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5115 struct nfs4_exception exception
= { };
5119 err
= _nfs4_proc_getlk(state
, cmd
, request
);
5120 trace_nfs4_get_lock(request
, state
, cmd
, err
);
5121 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
), err
,
5123 } while (exception
.retry
);
5127 static int do_vfs_lock(struct file
*file
, struct file_lock
*fl
)
5130 switch (fl
->fl_flags
& (FL_POSIX
|FL_FLOCK
)) {
5132 res
= posix_lock_file_wait(file
, fl
);
5135 res
= flock_lock_file_wait(file
, fl
);
5143 struct nfs4_unlockdata
{
5144 struct nfs_locku_args arg
;
5145 struct nfs_locku_res res
;
5146 struct nfs4_lock_state
*lsp
;
5147 struct nfs_open_context
*ctx
;
5148 struct file_lock fl
;
5149 const struct nfs_server
*server
;
5150 unsigned long timestamp
;
5153 static struct nfs4_unlockdata
*nfs4_alloc_unlockdata(struct file_lock
*fl
,
5154 struct nfs_open_context
*ctx
,
5155 struct nfs4_lock_state
*lsp
,
5156 struct nfs_seqid
*seqid
)
5158 struct nfs4_unlockdata
*p
;
5159 struct inode
*inode
= lsp
->ls_state
->inode
;
5161 p
= kzalloc(sizeof(*p
), GFP_NOFS
);
5164 p
->arg
.fh
= NFS_FH(inode
);
5166 p
->arg
.seqid
= seqid
;
5167 p
->res
.seqid
= seqid
;
5168 p
->arg
.stateid
= &lsp
->ls_stateid
;
5170 atomic_inc(&lsp
->ls_count
);
5171 /* Ensure we don't close file until we're done freeing locks! */
5172 p
->ctx
= get_nfs_open_context(ctx
);
5173 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
5174 p
->server
= NFS_SERVER(inode
);
5178 static void nfs4_locku_release_calldata(void *data
)
5180 struct nfs4_unlockdata
*calldata
= data
;
5181 nfs_free_seqid(calldata
->arg
.seqid
);
5182 nfs4_put_lock_state(calldata
->lsp
);
5183 put_nfs_open_context(calldata
->ctx
);
5187 static void nfs4_locku_done(struct rpc_task
*task
, void *data
)
5189 struct nfs4_unlockdata
*calldata
= data
;
5191 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
5193 switch (task
->tk_status
) {
5195 nfs4_stateid_copy(&calldata
->lsp
->ls_stateid
,
5196 &calldata
->res
.stateid
);
5197 renew_lease(calldata
->server
, calldata
->timestamp
);
5199 case -NFS4ERR_BAD_STATEID
:
5200 case -NFS4ERR_OLD_STATEID
:
5201 case -NFS4ERR_STALE_STATEID
:
5202 case -NFS4ERR_EXPIRED
:
5205 if (nfs4_async_handle_error(task
, calldata
->server
, NULL
) == -EAGAIN
)
5206 rpc_restart_call_prepare(task
);
5208 nfs_release_seqid(calldata
->arg
.seqid
);
5211 static void nfs4_locku_prepare(struct rpc_task
*task
, void *data
)
5213 struct nfs4_unlockdata
*calldata
= data
;
5215 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
5217 if (test_bit(NFS_LOCK_INITIALIZED
, &calldata
->lsp
->ls_flags
) == 0) {
5218 /* Note: exit _without_ running nfs4_locku_done */
5221 calldata
->timestamp
= jiffies
;
5222 if (nfs4_setup_sequence(calldata
->server
,
5223 &calldata
->arg
.seq_args
,
5224 &calldata
->res
.seq_res
,
5226 nfs_release_seqid(calldata
->arg
.seqid
);
5229 task
->tk_action
= NULL
;
5231 nfs4_sequence_done(task
, &calldata
->res
.seq_res
);
5234 static const struct rpc_call_ops nfs4_locku_ops
= {
5235 .rpc_call_prepare
= nfs4_locku_prepare
,
5236 .rpc_call_done
= nfs4_locku_done
,
5237 .rpc_release
= nfs4_locku_release_calldata
,
5240 static struct rpc_task
*nfs4_do_unlck(struct file_lock
*fl
,
5241 struct nfs_open_context
*ctx
,
5242 struct nfs4_lock_state
*lsp
,
5243 struct nfs_seqid
*seqid
)
5245 struct nfs4_unlockdata
*data
;
5246 struct rpc_message msg
= {
5247 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKU
],
5248 .rpc_cred
= ctx
->cred
,
5250 struct rpc_task_setup task_setup_data
= {
5251 .rpc_client
= NFS_CLIENT(lsp
->ls_state
->inode
),
5252 .rpc_message
= &msg
,
5253 .callback_ops
= &nfs4_locku_ops
,
5254 .workqueue
= nfsiod_workqueue
,
5255 .flags
= RPC_TASK_ASYNC
,
5258 nfs4_state_protect(NFS_SERVER(lsp
->ls_state
->inode
)->nfs_client
,
5259 NFS_SP4_MACH_CRED_CLEANUP
, &task_setup_data
.rpc_client
, &msg
);
5261 /* Ensure this is an unlock - when canceling a lock, the
5262 * canceled lock is passed in, and it won't be an unlock.
5264 fl
->fl_type
= F_UNLCK
;
5266 data
= nfs4_alloc_unlockdata(fl
, ctx
, lsp
, seqid
);
5268 nfs_free_seqid(seqid
);
5269 return ERR_PTR(-ENOMEM
);
5272 nfs4_init_sequence(&data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
5273 msg
.rpc_argp
= &data
->arg
;
5274 msg
.rpc_resp
= &data
->res
;
5275 task_setup_data
.callback_data
= data
;
5276 return rpc_run_task(&task_setup_data
);
5279 static int nfs4_proc_unlck(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5281 struct inode
*inode
= state
->inode
;
5282 struct nfs4_state_owner
*sp
= state
->owner
;
5283 struct nfs_inode
*nfsi
= NFS_I(inode
);
5284 struct nfs_seqid
*seqid
;
5285 struct nfs4_lock_state
*lsp
;
5286 struct rpc_task
*task
;
5288 unsigned char fl_flags
= request
->fl_flags
;
5290 status
= nfs4_set_lock_state(state
, request
);
5291 /* Unlock _before_ we do the RPC call */
5292 request
->fl_flags
|= FL_EXISTS
;
5293 /* Exclude nfs_delegation_claim_locks() */
5294 mutex_lock(&sp
->so_delegreturn_mutex
);
5295 /* Exclude nfs4_reclaim_open_stateid() - note nesting! */
5296 down_read(&nfsi
->rwsem
);
5297 if (do_vfs_lock(request
->fl_file
, request
) == -ENOENT
) {
5298 up_read(&nfsi
->rwsem
);
5299 mutex_unlock(&sp
->so_delegreturn_mutex
);
5302 up_read(&nfsi
->rwsem
);
5303 mutex_unlock(&sp
->so_delegreturn_mutex
);
5306 /* Is this a delegated lock? */
5307 lsp
= request
->fl_u
.nfs4_fl
.owner
;
5308 if (test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
) == 0)
5310 seqid
= nfs_alloc_seqid(&lsp
->ls_seqid
, GFP_KERNEL
);
5314 task
= nfs4_do_unlck(request
, nfs_file_open_context(request
->fl_file
), lsp
, seqid
);
5315 status
= PTR_ERR(task
);
5318 status
= nfs4_wait_for_completion_rpc_task(task
);
5321 request
->fl_flags
= fl_flags
;
5322 trace_nfs4_unlock(request
, state
, F_SETLK
, status
);
5326 struct nfs4_lockdata
{
5327 struct nfs_lock_args arg
;
5328 struct nfs_lock_res res
;
5329 struct nfs4_lock_state
*lsp
;
5330 struct nfs_open_context
*ctx
;
5331 struct file_lock fl
;
5332 unsigned long timestamp
;
5335 struct nfs_server
*server
;
5338 static struct nfs4_lockdata
*nfs4_alloc_lockdata(struct file_lock
*fl
,
5339 struct nfs_open_context
*ctx
, struct nfs4_lock_state
*lsp
,
5342 struct nfs4_lockdata
*p
;
5343 struct inode
*inode
= lsp
->ls_state
->inode
;
5344 struct nfs_server
*server
= NFS_SERVER(inode
);
5346 p
= kzalloc(sizeof(*p
), gfp_mask
);
5350 p
->arg
.fh
= NFS_FH(inode
);
5352 p
->arg
.open_seqid
= nfs_alloc_seqid(&lsp
->ls_state
->owner
->so_seqid
, gfp_mask
);
5353 if (p
->arg
.open_seqid
== NULL
)
5355 p
->arg
.lock_seqid
= nfs_alloc_seqid(&lsp
->ls_seqid
, gfp_mask
);
5356 if (p
->arg
.lock_seqid
== NULL
)
5357 goto out_free_seqid
;
5358 p
->arg
.lock_stateid
= &lsp
->ls_stateid
;
5359 p
->arg
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
5360 p
->arg
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
5361 p
->arg
.lock_owner
.s_dev
= server
->s_dev
;
5362 p
->res
.lock_seqid
= p
->arg
.lock_seqid
;
5365 atomic_inc(&lsp
->ls_count
);
5366 p
->ctx
= get_nfs_open_context(ctx
);
5367 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
5370 nfs_free_seqid(p
->arg
.open_seqid
);
5376 static void nfs4_lock_prepare(struct rpc_task
*task
, void *calldata
)
5378 struct nfs4_lockdata
*data
= calldata
;
5379 struct nfs4_state
*state
= data
->lsp
->ls_state
;
5381 dprintk("%s: begin!\n", __func__
);
5382 if (nfs_wait_on_sequence(data
->arg
.lock_seqid
, task
) != 0)
5384 /* Do we need to do an open_to_lock_owner? */
5385 if (!(data
->arg
.lock_seqid
->sequence
->flags
& NFS_SEQID_CONFIRMED
)) {
5386 if (nfs_wait_on_sequence(data
->arg
.open_seqid
, task
) != 0) {
5387 goto out_release_lock_seqid
;
5389 data
->arg
.open_stateid
= &state
->open_stateid
;
5390 data
->arg
.new_lock_owner
= 1;
5391 data
->res
.open_seqid
= data
->arg
.open_seqid
;
5393 data
->arg
.new_lock_owner
= 0;
5394 if (!nfs4_valid_open_stateid(state
)) {
5395 data
->rpc_status
= -EBADF
;
5396 task
->tk_action
= NULL
;
5397 goto out_release_open_seqid
;
5399 data
->timestamp
= jiffies
;
5400 if (nfs4_setup_sequence(data
->server
,
5401 &data
->arg
.seq_args
,
5405 out_release_open_seqid
:
5406 nfs_release_seqid(data
->arg
.open_seqid
);
5407 out_release_lock_seqid
:
5408 nfs_release_seqid(data
->arg
.lock_seqid
);
5410 nfs4_sequence_done(task
, &data
->res
.seq_res
);
5411 dprintk("%s: done!, ret = %d\n", __func__
, data
->rpc_status
);
5414 static void nfs4_lock_done(struct rpc_task
*task
, void *calldata
)
5416 struct nfs4_lockdata
*data
= calldata
;
5418 dprintk("%s: begin!\n", __func__
);
5420 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
5423 data
->rpc_status
= task
->tk_status
;
5424 if (data
->arg
.new_lock_owner
!= 0) {
5425 if (data
->rpc_status
== 0)
5426 nfs_confirm_seqid(&data
->lsp
->ls_seqid
, 0);
5430 if (data
->rpc_status
== 0) {
5431 nfs4_stateid_copy(&data
->lsp
->ls_stateid
, &data
->res
.stateid
);
5432 set_bit(NFS_LOCK_INITIALIZED
, &data
->lsp
->ls_flags
);
5433 renew_lease(NFS_SERVER(data
->ctx
->dentry
->d_inode
), data
->timestamp
);
5436 dprintk("%s: done, ret = %d!\n", __func__
, data
->rpc_status
);
5439 static void nfs4_lock_release(void *calldata
)
5441 struct nfs4_lockdata
*data
= calldata
;
5443 dprintk("%s: begin!\n", __func__
);
5444 nfs_free_seqid(data
->arg
.open_seqid
);
5445 if (data
->cancelled
!= 0) {
5446 struct rpc_task
*task
;
5447 task
= nfs4_do_unlck(&data
->fl
, data
->ctx
, data
->lsp
,
5448 data
->arg
.lock_seqid
);
5450 rpc_put_task_async(task
);
5451 dprintk("%s: cancelling lock!\n", __func__
);
5453 nfs_free_seqid(data
->arg
.lock_seqid
);
5454 nfs4_put_lock_state(data
->lsp
);
5455 put_nfs_open_context(data
->ctx
);
5457 dprintk("%s: done!\n", __func__
);
5460 static const struct rpc_call_ops nfs4_lock_ops
= {
5461 .rpc_call_prepare
= nfs4_lock_prepare
,
5462 .rpc_call_done
= nfs4_lock_done
,
5463 .rpc_release
= nfs4_lock_release
,
5466 static void nfs4_handle_setlk_error(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
, int new_lock_owner
, int error
)
5469 case -NFS4ERR_ADMIN_REVOKED
:
5470 case -NFS4ERR_BAD_STATEID
:
5471 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
5472 if (new_lock_owner
!= 0 ||
5473 test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
) != 0)
5474 nfs4_schedule_stateid_recovery(server
, lsp
->ls_state
);
5476 case -NFS4ERR_STALE_STATEID
:
5477 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
5478 case -NFS4ERR_EXPIRED
:
5479 nfs4_schedule_lease_recovery(server
->nfs_client
);
5483 static int _nfs4_do_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*fl
, int recovery_type
)
5485 struct nfs4_lockdata
*data
;
5486 struct rpc_task
*task
;
5487 struct rpc_message msg
= {
5488 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCK
],
5489 .rpc_cred
= state
->owner
->so_cred
,
5491 struct rpc_task_setup task_setup_data
= {
5492 .rpc_client
= NFS_CLIENT(state
->inode
),
5493 .rpc_message
= &msg
,
5494 .callback_ops
= &nfs4_lock_ops
,
5495 .workqueue
= nfsiod_workqueue
,
5496 .flags
= RPC_TASK_ASYNC
,
5500 dprintk("%s: begin!\n", __func__
);
5501 data
= nfs4_alloc_lockdata(fl
, nfs_file_open_context(fl
->fl_file
),
5502 fl
->fl_u
.nfs4_fl
.owner
,
5503 recovery_type
== NFS_LOCK_NEW
? GFP_KERNEL
: GFP_NOFS
);
5507 data
->arg
.block
= 1;
5508 nfs4_init_sequence(&data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
5509 msg
.rpc_argp
= &data
->arg
;
5510 msg
.rpc_resp
= &data
->res
;
5511 task_setup_data
.callback_data
= data
;
5512 if (recovery_type
> NFS_LOCK_NEW
) {
5513 if (recovery_type
== NFS_LOCK_RECLAIM
)
5514 data
->arg
.reclaim
= NFS_LOCK_RECLAIM
;
5515 nfs4_set_sequence_privileged(&data
->arg
.seq_args
);
5517 task
= rpc_run_task(&task_setup_data
);
5519 return PTR_ERR(task
);
5520 ret
= nfs4_wait_for_completion_rpc_task(task
);
5522 ret
= data
->rpc_status
;
5524 nfs4_handle_setlk_error(data
->server
, data
->lsp
,
5525 data
->arg
.new_lock_owner
, ret
);
5527 data
->cancelled
= 1;
5529 dprintk("%s: done, ret = %d!\n", __func__
, ret
);
5533 static int nfs4_lock_reclaim(struct nfs4_state
*state
, struct file_lock
*request
)
5535 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
5536 struct nfs4_exception exception
= {
5537 .inode
= state
->inode
,
5542 /* Cache the lock if possible... */
5543 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
5545 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_RECLAIM
);
5546 trace_nfs4_lock_reclaim(request
, state
, F_SETLK
, err
);
5547 if (err
!= -NFS4ERR_DELAY
)
5549 nfs4_handle_exception(server
, err
, &exception
);
5550 } while (exception
.retry
);
5554 static int nfs4_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
5556 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
5557 struct nfs4_exception exception
= {
5558 .inode
= state
->inode
,
5562 err
= nfs4_set_lock_state(state
, request
);
5565 if (!recover_lost_locks
) {
5566 set_bit(NFS_LOCK_LOST
, &request
->fl_u
.nfs4_fl
.owner
->ls_flags
);
5570 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
5572 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_EXPIRED
);
5573 trace_nfs4_lock_expired(request
, state
, F_SETLK
, err
);
5577 case -NFS4ERR_GRACE
:
5578 case -NFS4ERR_DELAY
:
5579 nfs4_handle_exception(server
, err
, &exception
);
5582 } while (exception
.retry
);
5587 #if defined(CONFIG_NFS_V4_1)
5589 * nfs41_check_expired_locks - possibly free a lock stateid
5591 * @state: NFSv4 state for an inode
5593 * Returns NFS_OK if recovery for this stateid is now finished.
5594 * Otherwise a negative NFS4ERR value is returned.
5596 static int nfs41_check_expired_locks(struct nfs4_state
*state
)
5598 int status
, ret
= -NFS4ERR_BAD_STATEID
;
5599 struct nfs4_lock_state
*lsp
;
5600 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
5602 list_for_each_entry(lsp
, &state
->lock_states
, ls_locks
) {
5603 if (test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
)) {
5604 struct rpc_cred
*cred
= lsp
->ls_state
->owner
->so_cred
;
5606 status
= nfs41_test_stateid(server
,
5609 trace_nfs4_test_lock_stateid(state
, lsp
, status
);
5610 if (status
!= NFS_OK
) {
5611 /* Free the stateid unless the server
5612 * informs us the stateid is unrecognized. */
5613 if (status
!= -NFS4ERR_BAD_STATEID
)
5614 nfs41_free_stateid(server
,
5617 clear_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
);
5626 static int nfs41_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
5628 int status
= NFS_OK
;
5630 if (test_bit(LK_STATE_IN_USE
, &state
->flags
))
5631 status
= nfs41_check_expired_locks(state
);
5632 if (status
!= NFS_OK
)
5633 status
= nfs4_lock_expired(state
, request
);
5638 static int _nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5640 struct nfs4_state_owner
*sp
= state
->owner
;
5641 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
5642 unsigned char fl_flags
= request
->fl_flags
;
5644 int status
= -ENOLCK
;
5646 if ((fl_flags
& FL_POSIX
) &&
5647 !test_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
))
5649 /* Is this a delegated open? */
5650 status
= nfs4_set_lock_state(state
, request
);
5653 request
->fl_flags
|= FL_ACCESS
;
5654 status
= do_vfs_lock(request
->fl_file
, request
);
5657 down_read(&nfsi
->rwsem
);
5658 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
)) {
5659 /* Yes: cache locks! */
5660 /* ...but avoid races with delegation recall... */
5661 request
->fl_flags
= fl_flags
& ~FL_SLEEP
;
5662 status
= do_vfs_lock(request
->fl_file
, request
);
5665 seq
= raw_seqcount_begin(&sp
->so_reclaim_seqcount
);
5666 up_read(&nfsi
->rwsem
);
5667 status
= _nfs4_do_setlk(state
, cmd
, request
, NFS_LOCK_NEW
);
5670 down_read(&nfsi
->rwsem
);
5671 if (read_seqcount_retry(&sp
->so_reclaim_seqcount
, seq
)) {
5672 status
= -NFS4ERR_DELAY
;
5675 /* Note: we always want to sleep here! */
5676 request
->fl_flags
= fl_flags
| FL_SLEEP
;
5677 if (do_vfs_lock(request
->fl_file
, request
) < 0)
5678 printk(KERN_WARNING
"NFS: %s: VFS is out of sync with lock "
5679 "manager!\n", __func__
);
5681 up_read(&nfsi
->rwsem
);
5683 request
->fl_flags
= fl_flags
;
5687 static int nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5689 struct nfs4_exception exception
= {
5691 .inode
= state
->inode
,
5696 err
= _nfs4_proc_setlk(state
, cmd
, request
);
5697 trace_nfs4_set_lock(request
, state
, cmd
, err
);
5698 if (err
== -NFS4ERR_DENIED
)
5700 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
5702 } while (exception
.retry
);
5707 nfs4_proc_lock(struct file
*filp
, int cmd
, struct file_lock
*request
)
5709 struct nfs_open_context
*ctx
;
5710 struct nfs4_state
*state
;
5711 unsigned long timeout
= NFS4_LOCK_MINTIMEOUT
;
5714 /* verify open state */
5715 ctx
= nfs_file_open_context(filp
);
5718 if (request
->fl_start
< 0 || request
->fl_end
< 0)
5721 if (IS_GETLK(cmd
)) {
5723 return nfs4_proc_getlk(state
, F_GETLK
, request
);
5727 if (!(IS_SETLK(cmd
) || IS_SETLKW(cmd
)))
5730 if (request
->fl_type
== F_UNLCK
) {
5732 return nfs4_proc_unlck(state
, cmd
, request
);
5739 * Don't rely on the VFS having checked the file open mode,
5740 * since it won't do this for flock() locks.
5742 switch (request
->fl_type
) {
5744 if (!(filp
->f_mode
& FMODE_READ
))
5748 if (!(filp
->f_mode
& FMODE_WRITE
))
5753 status
= nfs4_proc_setlk(state
, cmd
, request
);
5754 if ((status
!= -EAGAIN
) || IS_SETLK(cmd
))
5756 timeout
= nfs4_set_lock_task_retry(timeout
);
5757 status
= -ERESTARTSYS
;
5760 } while(status
< 0);
5764 int nfs4_lock_delegation_recall(struct file_lock
*fl
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
5766 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
5769 err
= nfs4_set_lock_state(state
, fl
);
5772 err
= _nfs4_do_setlk(state
, F_SETLK
, fl
, NFS_LOCK_NEW
);
5773 return nfs4_handle_delegation_recall_error(server
, state
, stateid
, err
);
5776 struct nfs_release_lockowner_data
{
5777 struct nfs4_lock_state
*lsp
;
5778 struct nfs_server
*server
;
5779 struct nfs_release_lockowner_args args
;
5780 struct nfs4_sequence_args seq_args
;
5781 struct nfs4_sequence_res seq_res
;
5784 static void nfs4_release_lockowner_prepare(struct rpc_task
*task
, void *calldata
)
5786 struct nfs_release_lockowner_data
*data
= calldata
;
5787 nfs40_setup_sequence(data
->server
,
5788 &data
->seq_args
, &data
->seq_res
, task
);
5791 static void nfs4_release_lockowner_done(struct rpc_task
*task
, void *calldata
)
5793 struct nfs_release_lockowner_data
*data
= calldata
;
5794 nfs40_sequence_done(task
, &data
->seq_res
);
5797 static void nfs4_release_lockowner_release(void *calldata
)
5799 struct nfs_release_lockowner_data
*data
= calldata
;
5800 nfs4_free_lock_state(data
->server
, data
->lsp
);
5804 static const struct rpc_call_ops nfs4_release_lockowner_ops
= {
5805 .rpc_call_prepare
= nfs4_release_lockowner_prepare
,
5806 .rpc_call_done
= nfs4_release_lockowner_done
,
5807 .rpc_release
= nfs4_release_lockowner_release
,
5810 static int nfs4_release_lockowner(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
)
5812 struct nfs_release_lockowner_data
*data
;
5813 struct rpc_message msg
= {
5814 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RELEASE_LOCKOWNER
],
5817 if (server
->nfs_client
->cl_mvops
->minor_version
!= 0)
5820 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
5823 nfs4_init_sequence(&data
->seq_args
, &data
->seq_res
, 0);
5825 data
->server
= server
;
5826 data
->args
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
5827 data
->args
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
5828 data
->args
.lock_owner
.s_dev
= server
->s_dev
;
5830 msg
.rpc_argp
= &data
->args
;
5831 rpc_call_async(server
->client
, &msg
, 0, &nfs4_release_lockowner_ops
, data
);
5835 #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl"
5837 static int nfs4_xattr_set_nfs4_acl(struct dentry
*dentry
, const char *key
,
5838 const void *buf
, size_t buflen
,
5839 int flags
, int type
)
5841 if (strcmp(key
, "") != 0)
5844 return nfs4_proc_set_acl(dentry
->d_inode
, buf
, buflen
);
5847 static int nfs4_xattr_get_nfs4_acl(struct dentry
*dentry
, const char *key
,
5848 void *buf
, size_t buflen
, int type
)
5850 if (strcmp(key
, "") != 0)
5853 return nfs4_proc_get_acl(dentry
->d_inode
, buf
, buflen
);
5856 static size_t nfs4_xattr_list_nfs4_acl(struct dentry
*dentry
, char *list
,
5857 size_t list_len
, const char *name
,
5858 size_t name_len
, int type
)
5860 size_t len
= sizeof(XATTR_NAME_NFSV4_ACL
);
5862 if (!nfs4_server_supports_acls(NFS_SERVER(dentry
->d_inode
)))
5865 if (list
&& len
<= list_len
)
5866 memcpy(list
, XATTR_NAME_NFSV4_ACL
, len
);
5870 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
5871 static inline int nfs4_server_supports_labels(struct nfs_server
*server
)
5873 return server
->caps
& NFS_CAP_SECURITY_LABEL
;
5876 static int nfs4_xattr_set_nfs4_label(struct dentry
*dentry
, const char *key
,
5877 const void *buf
, size_t buflen
,
5878 int flags
, int type
)
5880 if (security_ismaclabel(key
))
5881 return nfs4_set_security_label(dentry
, buf
, buflen
);
5886 static int nfs4_xattr_get_nfs4_label(struct dentry
*dentry
, const char *key
,
5887 void *buf
, size_t buflen
, int type
)
5889 if (security_ismaclabel(key
))
5890 return nfs4_get_security_label(dentry
->d_inode
, buf
, buflen
);
5894 static size_t nfs4_xattr_list_nfs4_label(struct dentry
*dentry
, char *list
,
5895 size_t list_len
, const char *name
,
5896 size_t name_len
, int type
)
5900 if (nfs_server_capable(dentry
->d_inode
, NFS_CAP_SECURITY_LABEL
)) {
5901 len
= security_inode_listsecurity(dentry
->d_inode
, NULL
, 0);
5902 if (list
&& len
<= list_len
)
5903 security_inode_listsecurity(dentry
->d_inode
, list
, len
);
5908 static const struct xattr_handler nfs4_xattr_nfs4_label_handler
= {
5909 .prefix
= XATTR_SECURITY_PREFIX
,
5910 .list
= nfs4_xattr_list_nfs4_label
,
5911 .get
= nfs4_xattr_get_nfs4_label
,
5912 .set
= nfs4_xattr_set_nfs4_label
,
5918 * nfs_fhget will use either the mounted_on_fileid or the fileid
5920 static void nfs_fixup_referral_attributes(struct nfs_fattr
*fattr
)
5922 if (!(((fattr
->valid
& NFS_ATTR_FATTR_MOUNTED_ON_FILEID
) ||
5923 (fattr
->valid
& NFS_ATTR_FATTR_FILEID
)) &&
5924 (fattr
->valid
& NFS_ATTR_FATTR_FSID
) &&
5925 (fattr
->valid
& NFS_ATTR_FATTR_V4_LOCATIONS
)))
5928 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
5929 NFS_ATTR_FATTR_NLINK
| NFS_ATTR_FATTR_V4_REFERRAL
;
5930 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
5934 static int _nfs4_proc_fs_locations(struct rpc_clnt
*client
, struct inode
*dir
,
5935 const struct qstr
*name
,
5936 struct nfs4_fs_locations
*fs_locations
,
5939 struct nfs_server
*server
= NFS_SERVER(dir
);
5941 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
5943 struct nfs4_fs_locations_arg args
= {
5944 .dir_fh
= NFS_FH(dir
),
5949 struct nfs4_fs_locations_res res
= {
5950 .fs_locations
= fs_locations
,
5952 struct rpc_message msg
= {
5953 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
5959 dprintk("%s: start\n", __func__
);
5961 /* Ask for the fileid of the absent filesystem if mounted_on_fileid
5962 * is not supported */
5963 if (NFS_SERVER(dir
)->attr_bitmask
[1] & FATTR4_WORD1_MOUNTED_ON_FILEID
)
5964 bitmask
[1] |= FATTR4_WORD1_MOUNTED_ON_FILEID
;
5966 bitmask
[0] |= FATTR4_WORD0_FILEID
;
5968 nfs_fattr_init(&fs_locations
->fattr
);
5969 fs_locations
->server
= server
;
5970 fs_locations
->nlocations
= 0;
5971 status
= nfs4_call_sync(client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
5972 dprintk("%s: returned status = %d\n", __func__
, status
);
5976 int nfs4_proc_fs_locations(struct rpc_clnt
*client
, struct inode
*dir
,
5977 const struct qstr
*name
,
5978 struct nfs4_fs_locations
*fs_locations
,
5981 struct nfs4_exception exception
= { };
5984 err
= _nfs4_proc_fs_locations(client
, dir
, name
,
5985 fs_locations
, page
);
5986 trace_nfs4_get_fs_locations(dir
, name
, err
);
5987 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
5989 } while (exception
.retry
);
5994 * If 'use_integrity' is true and the state managment nfs_client
5995 * cl_rpcclient is using krb5i/p, use the integrity protected cl_rpcclient
5996 * and the machine credential as per RFC3530bis and RFC5661 Security
5997 * Considerations sections. Otherwise, just use the user cred with the
5998 * filesystem's rpc_client.
6000 static int _nfs4_proc_secinfo(struct inode
*dir
, const struct qstr
*name
, struct nfs4_secinfo_flavors
*flavors
, bool use_integrity
)
6003 struct nfs4_secinfo_arg args
= {
6004 .dir_fh
= NFS_FH(dir
),
6007 struct nfs4_secinfo_res res
= {
6010 struct rpc_message msg
= {
6011 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SECINFO
],
6015 struct rpc_clnt
*clnt
= NFS_SERVER(dir
)->client
;
6016 struct rpc_cred
*cred
= NULL
;
6018 if (use_integrity
) {
6019 clnt
= NFS_SERVER(dir
)->nfs_client
->cl_rpcclient
;
6020 cred
= nfs4_get_clid_cred(NFS_SERVER(dir
)->nfs_client
);
6021 msg
.rpc_cred
= cred
;
6024 dprintk("NFS call secinfo %s\n", name
->name
);
6026 nfs4_state_protect(NFS_SERVER(dir
)->nfs_client
,
6027 NFS_SP4_MACH_CRED_SECINFO
, &clnt
, &msg
);
6029 status
= nfs4_call_sync(clnt
, NFS_SERVER(dir
), &msg
, &args
.seq_args
,
6031 dprintk("NFS reply secinfo: %d\n", status
);
6039 int nfs4_proc_secinfo(struct inode
*dir
, const struct qstr
*name
,
6040 struct nfs4_secinfo_flavors
*flavors
)
6042 struct nfs4_exception exception
= { };
6045 err
= -NFS4ERR_WRONGSEC
;
6047 /* try to use integrity protection with machine cred */
6048 if (_nfs4_is_integrity_protected(NFS_SERVER(dir
)->nfs_client
))
6049 err
= _nfs4_proc_secinfo(dir
, name
, flavors
, true);
6052 * if unable to use integrity protection, or SECINFO with
6053 * integrity protection returns NFS4ERR_WRONGSEC (which is
6054 * disallowed by spec, but exists in deployed servers) use
6055 * the current filesystem's rpc_client and the user cred.
6057 if (err
== -NFS4ERR_WRONGSEC
)
6058 err
= _nfs4_proc_secinfo(dir
, name
, flavors
, false);
6060 trace_nfs4_secinfo(dir
, name
, err
);
6061 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
6063 } while (exception
.retry
);
6067 #ifdef CONFIG_NFS_V4_1
6069 * Check the exchange flags returned by the server for invalid flags, having
6070 * both PNFS and NON_PNFS flags set, and not having one of NON_PNFS, PNFS, or
6073 static int nfs4_check_cl_exchange_flags(u32 flags
)
6075 if (flags
& ~EXCHGID4_FLAG_MASK_R
)
6077 if ((flags
& EXCHGID4_FLAG_USE_PNFS_MDS
) &&
6078 (flags
& EXCHGID4_FLAG_USE_NON_PNFS
))
6080 if (!(flags
& (EXCHGID4_FLAG_MASK_PNFS
)))
6084 return -NFS4ERR_INVAL
;
6088 nfs41_same_server_scope(struct nfs41_server_scope
*a
,
6089 struct nfs41_server_scope
*b
)
6091 if (a
->server_scope_sz
== b
->server_scope_sz
&&
6092 memcmp(a
->server_scope
, b
->server_scope
, a
->server_scope_sz
) == 0)
6099 * nfs4_proc_bind_conn_to_session()
6101 * The 4.1 client currently uses the same TCP connection for the
6102 * fore and backchannel.
6104 int nfs4_proc_bind_conn_to_session(struct nfs_client
*clp
, struct rpc_cred
*cred
)
6107 struct nfs41_bind_conn_to_session_res res
;
6108 struct rpc_message msg
= {
6110 &nfs4_procedures
[NFSPROC4_CLNT_BIND_CONN_TO_SESSION
],
6116 dprintk("--> %s\n", __func__
);
6118 res
.session
= kzalloc(sizeof(struct nfs4_session
), GFP_NOFS
);
6119 if (unlikely(res
.session
== NULL
)) {
6124 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
6125 trace_nfs4_bind_conn_to_session(clp
, status
);
6127 if (memcmp(res
.session
->sess_id
.data
,
6128 clp
->cl_session
->sess_id
.data
, NFS4_MAX_SESSIONID_LEN
)) {
6129 dprintk("NFS: %s: Session ID mismatch\n", __func__
);
6133 if (res
.dir
!= NFS4_CDFS4_BOTH
) {
6134 dprintk("NFS: %s: Unexpected direction from server\n",
6139 if (res
.use_conn_in_rdma_mode
) {
6140 dprintk("NFS: %s: Server returned RDMA mode = true\n",
6149 dprintk("<-- %s status= %d\n", __func__
, status
);
6154 * Minimum set of SP4_MACH_CRED operations from RFC 5661 in the enforce map
6155 * and operations we'd like to see to enable certain features in the allow map
6157 static const struct nfs41_state_protection nfs4_sp4_mach_cred_request
= {
6158 .how
= SP4_MACH_CRED
,
6159 .enforce
.u
.words
= {
6160 [1] = 1 << (OP_BIND_CONN_TO_SESSION
- 32) |
6161 1 << (OP_EXCHANGE_ID
- 32) |
6162 1 << (OP_CREATE_SESSION
- 32) |
6163 1 << (OP_DESTROY_SESSION
- 32) |
6164 1 << (OP_DESTROY_CLIENTID
- 32)
6167 [0] = 1 << (OP_CLOSE
) |
6170 [1] = 1 << (OP_SECINFO
- 32) |
6171 1 << (OP_SECINFO_NO_NAME
- 32) |
6172 1 << (OP_TEST_STATEID
- 32) |
6173 1 << (OP_FREE_STATEID
- 32) |
6174 1 << (OP_WRITE
- 32)
6179 * Select the state protection mode for client `clp' given the server results
6180 * from exchange_id in `sp'.
6182 * Returns 0 on success, negative errno otherwise.
6184 static int nfs4_sp4_select_mode(struct nfs_client
*clp
,
6185 struct nfs41_state_protection
*sp
)
6187 static const u32 supported_enforce
[NFS4_OP_MAP_NUM_WORDS
] = {
6188 [1] = 1 << (OP_BIND_CONN_TO_SESSION
- 32) |
6189 1 << (OP_EXCHANGE_ID
- 32) |
6190 1 << (OP_CREATE_SESSION
- 32) |
6191 1 << (OP_DESTROY_SESSION
- 32) |
6192 1 << (OP_DESTROY_CLIENTID
- 32)
6196 if (sp
->how
== SP4_MACH_CRED
) {
6197 /* Print state protect result */
6198 dfprintk(MOUNT
, "Server SP4_MACH_CRED support:\n");
6199 for (i
= 0; i
<= LAST_NFS4_OP
; i
++) {
6200 if (test_bit(i
, sp
->enforce
.u
.longs
))
6201 dfprintk(MOUNT
, " enforce op %d\n", i
);
6202 if (test_bit(i
, sp
->allow
.u
.longs
))
6203 dfprintk(MOUNT
, " allow op %d\n", i
);
6206 /* make sure nothing is on enforce list that isn't supported */
6207 for (i
= 0; i
< NFS4_OP_MAP_NUM_WORDS
; i
++) {
6208 if (sp
->enforce
.u
.words
[i
] & ~supported_enforce
[i
]) {
6209 dfprintk(MOUNT
, "sp4_mach_cred: disabled\n");
6215 * Minimal mode - state operations are allowed to use machine
6216 * credential. Note this already happens by default, so the
6217 * client doesn't have to do anything more than the negotiation.
6219 * NOTE: we don't care if EXCHANGE_ID is in the list -
6220 * we're already using the machine cred for exchange_id
6221 * and will never use a different cred.
6223 if (test_bit(OP_BIND_CONN_TO_SESSION
, sp
->enforce
.u
.longs
) &&
6224 test_bit(OP_CREATE_SESSION
, sp
->enforce
.u
.longs
) &&
6225 test_bit(OP_DESTROY_SESSION
, sp
->enforce
.u
.longs
) &&
6226 test_bit(OP_DESTROY_CLIENTID
, sp
->enforce
.u
.longs
)) {
6227 dfprintk(MOUNT
, "sp4_mach_cred:\n");
6228 dfprintk(MOUNT
, " minimal mode enabled\n");
6229 set_bit(NFS_SP4_MACH_CRED_MINIMAL
, &clp
->cl_sp4_flags
);
6231 dfprintk(MOUNT
, "sp4_mach_cred: disabled\n");
6235 if (test_bit(OP_CLOSE
, sp
->allow
.u
.longs
) &&
6236 test_bit(OP_LOCKU
, sp
->allow
.u
.longs
)) {
6237 dfprintk(MOUNT
, " cleanup mode enabled\n");
6238 set_bit(NFS_SP4_MACH_CRED_CLEANUP
, &clp
->cl_sp4_flags
);
6241 if (test_bit(OP_SECINFO
, sp
->allow
.u
.longs
) &&
6242 test_bit(OP_SECINFO_NO_NAME
, sp
->allow
.u
.longs
)) {
6243 dfprintk(MOUNT
, " secinfo mode enabled\n");
6244 set_bit(NFS_SP4_MACH_CRED_SECINFO
, &clp
->cl_sp4_flags
);
6247 if (test_bit(OP_TEST_STATEID
, sp
->allow
.u
.longs
) &&
6248 test_bit(OP_FREE_STATEID
, sp
->allow
.u
.longs
)) {
6249 dfprintk(MOUNT
, " stateid mode enabled\n");
6250 set_bit(NFS_SP4_MACH_CRED_STATEID
, &clp
->cl_sp4_flags
);
6253 if (test_bit(OP_WRITE
, sp
->allow
.u
.longs
)) {
6254 dfprintk(MOUNT
, " write mode enabled\n");
6255 set_bit(NFS_SP4_MACH_CRED_WRITE
, &clp
->cl_sp4_flags
);
6258 if (test_bit(OP_COMMIT
, sp
->allow
.u
.longs
)) {
6259 dfprintk(MOUNT
, " commit mode enabled\n");
6260 set_bit(NFS_SP4_MACH_CRED_COMMIT
, &clp
->cl_sp4_flags
);
6268 * _nfs4_proc_exchange_id()
6270 * Wrapper for EXCHANGE_ID operation.
6272 static int _nfs4_proc_exchange_id(struct nfs_client
*clp
, struct rpc_cred
*cred
,
6275 nfs4_verifier verifier
;
6276 struct nfs41_exchange_id_args args
= {
6277 .verifier
= &verifier
,
6279 .flags
= EXCHGID4_FLAG_SUPP_MOVED_REFER
|
6280 EXCHGID4_FLAG_BIND_PRINC_STATEID
,
6282 struct nfs41_exchange_id_res res
= {
6286 struct rpc_message msg
= {
6287 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_EXCHANGE_ID
],
6293 nfs4_init_boot_verifier(clp
, &verifier
);
6294 args
.id_len
= nfs4_init_uniform_client_string(clp
, args
.id
,
6296 dprintk("NFS call exchange_id auth=%s, '%.*s'\n",
6297 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
6298 args
.id_len
, args
.id
);
6300 res
.server_owner
= kzalloc(sizeof(struct nfs41_server_owner
),
6302 if (unlikely(res
.server_owner
== NULL
)) {
6307 res
.server_scope
= kzalloc(sizeof(struct nfs41_server_scope
),
6309 if (unlikely(res
.server_scope
== NULL
)) {
6311 goto out_server_owner
;
6314 res
.impl_id
= kzalloc(sizeof(struct nfs41_impl_id
), GFP_NOFS
);
6315 if (unlikely(res
.impl_id
== NULL
)) {
6317 goto out_server_scope
;
6322 args
.state_protect
.how
= SP4_NONE
;
6326 args
.state_protect
= nfs4_sp4_mach_cred_request
;
6333 goto out_server_scope
;
6336 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
6337 trace_nfs4_exchange_id(clp
, status
);
6339 status
= nfs4_check_cl_exchange_flags(res
.flags
);
6342 status
= nfs4_sp4_select_mode(clp
, &res
.state_protect
);
6345 clp
->cl_clientid
= res
.clientid
;
6346 clp
->cl_exchange_flags
= (res
.flags
& ~EXCHGID4_FLAG_CONFIRMED_R
);
6347 if (!(res
.flags
& EXCHGID4_FLAG_CONFIRMED_R
))
6348 clp
->cl_seqid
= res
.seqid
;
6350 kfree(clp
->cl_serverowner
);
6351 clp
->cl_serverowner
= res
.server_owner
;
6352 res
.server_owner
= NULL
;
6354 /* use the most recent implementation id */
6355 kfree(clp
->cl_implid
);
6356 clp
->cl_implid
= res
.impl_id
;
6358 if (clp
->cl_serverscope
!= NULL
&&
6359 !nfs41_same_server_scope(clp
->cl_serverscope
,
6360 res
.server_scope
)) {
6361 dprintk("%s: server_scope mismatch detected\n",
6363 set_bit(NFS4CLNT_SERVER_SCOPE_MISMATCH
, &clp
->cl_state
);
6364 kfree(clp
->cl_serverscope
);
6365 clp
->cl_serverscope
= NULL
;
6368 if (clp
->cl_serverscope
== NULL
) {
6369 clp
->cl_serverscope
= res
.server_scope
;
6376 kfree(res
.server_owner
);
6378 kfree(res
.server_scope
);
6380 if (clp
->cl_implid
!= NULL
)
6381 dprintk("NFS reply exchange_id: Server Implementation ID: "
6382 "domain: %s, name: %s, date: %llu,%u\n",
6383 clp
->cl_implid
->domain
, clp
->cl_implid
->name
,
6384 clp
->cl_implid
->date
.seconds
,
6385 clp
->cl_implid
->date
.nseconds
);
6386 dprintk("NFS reply exchange_id: %d\n", status
);
6391 * nfs4_proc_exchange_id()
6393 * Returns zero, a negative errno, or a negative NFS4ERR status code.
6395 * Since the clientid has expired, all compounds using sessions
6396 * associated with the stale clientid will be returning
6397 * NFS4ERR_BADSESSION in the sequence operation, and will therefore
6398 * be in some phase of session reset.
6400 * Will attempt to negotiate SP4_MACH_CRED if krb5i / krb5p auth is used.
6402 int nfs4_proc_exchange_id(struct nfs_client
*clp
, struct rpc_cred
*cred
)
6404 rpc_authflavor_t authflavor
= clp
->cl_rpcclient
->cl_auth
->au_flavor
;
6407 /* try SP4_MACH_CRED if krb5i/p */
6408 if (authflavor
== RPC_AUTH_GSS_KRB5I
||
6409 authflavor
== RPC_AUTH_GSS_KRB5P
) {
6410 status
= _nfs4_proc_exchange_id(clp
, cred
, SP4_MACH_CRED
);
6416 return _nfs4_proc_exchange_id(clp
, cred
, SP4_NONE
);
6419 static int _nfs4_proc_destroy_clientid(struct nfs_client
*clp
,
6420 struct rpc_cred
*cred
)
6422 struct rpc_message msg
= {
6423 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DESTROY_CLIENTID
],
6429 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
6430 trace_nfs4_destroy_clientid(clp
, status
);
6432 dprintk("NFS: Got error %d from the server %s on "
6433 "DESTROY_CLIENTID.", status
, clp
->cl_hostname
);
6437 static int nfs4_proc_destroy_clientid(struct nfs_client
*clp
,
6438 struct rpc_cred
*cred
)
6443 for (loop
= NFS4_MAX_LOOP_ON_RECOVER
; loop
!= 0; loop
--) {
6444 ret
= _nfs4_proc_destroy_clientid(clp
, cred
);
6446 case -NFS4ERR_DELAY
:
6447 case -NFS4ERR_CLIENTID_BUSY
:
6457 int nfs4_destroy_clientid(struct nfs_client
*clp
)
6459 struct rpc_cred
*cred
;
6462 if (clp
->cl_mvops
->minor_version
< 1)
6464 if (clp
->cl_exchange_flags
== 0)
6466 if (clp
->cl_preserve_clid
)
6468 cred
= nfs4_get_clid_cred(clp
);
6469 ret
= nfs4_proc_destroy_clientid(clp
, cred
);
6474 case -NFS4ERR_STALE_CLIENTID
:
6475 clp
->cl_exchange_flags
= 0;
6481 struct nfs4_get_lease_time_data
{
6482 struct nfs4_get_lease_time_args
*args
;
6483 struct nfs4_get_lease_time_res
*res
;
6484 struct nfs_client
*clp
;
6487 static void nfs4_get_lease_time_prepare(struct rpc_task
*task
,
6490 struct nfs4_get_lease_time_data
*data
=
6491 (struct nfs4_get_lease_time_data
*)calldata
;
6493 dprintk("--> %s\n", __func__
);
6494 /* just setup sequence, do not trigger session recovery
6495 since we're invoked within one */
6496 nfs41_setup_sequence(data
->clp
->cl_session
,
6497 &data
->args
->la_seq_args
,
6498 &data
->res
->lr_seq_res
,
6500 dprintk("<-- %s\n", __func__
);
6504 * Called from nfs4_state_manager thread for session setup, so don't recover
6505 * from sequence operation or clientid errors.
6507 static void nfs4_get_lease_time_done(struct rpc_task
*task
, void *calldata
)
6509 struct nfs4_get_lease_time_data
*data
=
6510 (struct nfs4_get_lease_time_data
*)calldata
;
6512 dprintk("--> %s\n", __func__
);
6513 if (!nfs41_sequence_done(task
, &data
->res
->lr_seq_res
))
6515 switch (task
->tk_status
) {
6516 case -NFS4ERR_DELAY
:
6517 case -NFS4ERR_GRACE
:
6518 dprintk("%s Retry: tk_status %d\n", __func__
, task
->tk_status
);
6519 rpc_delay(task
, NFS4_POLL_RETRY_MIN
);
6520 task
->tk_status
= 0;
6522 case -NFS4ERR_RETRY_UNCACHED_REP
:
6523 rpc_restart_call_prepare(task
);
6526 dprintk("<-- %s\n", __func__
);
6529 static const struct rpc_call_ops nfs4_get_lease_time_ops
= {
6530 .rpc_call_prepare
= nfs4_get_lease_time_prepare
,
6531 .rpc_call_done
= nfs4_get_lease_time_done
,
6534 int nfs4_proc_get_lease_time(struct nfs_client
*clp
, struct nfs_fsinfo
*fsinfo
)
6536 struct rpc_task
*task
;
6537 struct nfs4_get_lease_time_args args
;
6538 struct nfs4_get_lease_time_res res
= {
6539 .lr_fsinfo
= fsinfo
,
6541 struct nfs4_get_lease_time_data data
= {
6546 struct rpc_message msg
= {
6547 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GET_LEASE_TIME
],
6551 struct rpc_task_setup task_setup
= {
6552 .rpc_client
= clp
->cl_rpcclient
,
6553 .rpc_message
= &msg
,
6554 .callback_ops
= &nfs4_get_lease_time_ops
,
6555 .callback_data
= &data
,
6556 .flags
= RPC_TASK_TIMEOUT
,
6560 nfs4_init_sequence(&args
.la_seq_args
, &res
.lr_seq_res
, 0);
6561 nfs4_set_sequence_privileged(&args
.la_seq_args
);
6562 dprintk("--> %s\n", __func__
);
6563 task
= rpc_run_task(&task_setup
);
6566 status
= PTR_ERR(task
);
6568 status
= task
->tk_status
;
6571 dprintk("<-- %s return %d\n", __func__
, status
);
6577 * Initialize the values to be used by the client in CREATE_SESSION
6578 * If nfs4_init_session set the fore channel request and response sizes,
6581 * Set the back channel max_resp_sz_cached to zero to force the client to
6582 * always set csa_cachethis to FALSE because the current implementation
6583 * of the back channel DRC only supports caching the CB_SEQUENCE operation.
6585 static void nfs4_init_channel_attrs(struct nfs41_create_session_args
*args
)
6587 unsigned int max_rqst_sz
, max_resp_sz
;
6589 max_rqst_sz
= NFS_MAX_FILE_IO_SIZE
+ nfs41_maxwrite_overhead
;
6590 max_resp_sz
= NFS_MAX_FILE_IO_SIZE
+ nfs41_maxread_overhead
;
6592 /* Fore channel attributes */
6593 args
->fc_attrs
.max_rqst_sz
= max_rqst_sz
;
6594 args
->fc_attrs
.max_resp_sz
= max_resp_sz
;
6595 args
->fc_attrs
.max_ops
= NFS4_MAX_OPS
;
6596 args
->fc_attrs
.max_reqs
= max_session_slots
;
6598 dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u "
6599 "max_ops=%u max_reqs=%u\n",
6601 args
->fc_attrs
.max_rqst_sz
, args
->fc_attrs
.max_resp_sz
,
6602 args
->fc_attrs
.max_ops
, args
->fc_attrs
.max_reqs
);
6604 /* Back channel attributes */
6605 args
->bc_attrs
.max_rqst_sz
= PAGE_SIZE
;
6606 args
->bc_attrs
.max_resp_sz
= PAGE_SIZE
;
6607 args
->bc_attrs
.max_resp_sz_cached
= 0;
6608 args
->bc_attrs
.max_ops
= NFS4_MAX_BACK_CHANNEL_OPS
;
6609 args
->bc_attrs
.max_reqs
= 1;
6611 dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u "
6612 "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n",
6614 args
->bc_attrs
.max_rqst_sz
, args
->bc_attrs
.max_resp_sz
,
6615 args
->bc_attrs
.max_resp_sz_cached
, args
->bc_attrs
.max_ops
,
6616 args
->bc_attrs
.max_reqs
);
6619 static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args
*args
, struct nfs4_session
*session
)
6621 struct nfs4_channel_attrs
*sent
= &args
->fc_attrs
;
6622 struct nfs4_channel_attrs
*rcvd
= &session
->fc_attrs
;
6624 if (rcvd
->max_resp_sz
> sent
->max_resp_sz
)
6627 * Our requested max_ops is the minimum we need; we're not
6628 * prepared to break up compounds into smaller pieces than that.
6629 * So, no point even trying to continue if the server won't
6632 if (rcvd
->max_ops
< sent
->max_ops
)
6634 if (rcvd
->max_reqs
== 0)
6636 if (rcvd
->max_reqs
> NFS4_MAX_SLOT_TABLE
)
6637 rcvd
->max_reqs
= NFS4_MAX_SLOT_TABLE
;
6641 static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args
*args
, struct nfs4_session
*session
)
6643 struct nfs4_channel_attrs
*sent
= &args
->bc_attrs
;
6644 struct nfs4_channel_attrs
*rcvd
= &session
->bc_attrs
;
6646 if (rcvd
->max_rqst_sz
> sent
->max_rqst_sz
)
6648 if (rcvd
->max_resp_sz
< sent
->max_resp_sz
)
6650 if (rcvd
->max_resp_sz_cached
> sent
->max_resp_sz_cached
)
6652 /* These would render the backchannel useless: */
6653 if (rcvd
->max_ops
!= sent
->max_ops
)
6655 if (rcvd
->max_reqs
!= sent
->max_reqs
)
6660 static int nfs4_verify_channel_attrs(struct nfs41_create_session_args
*args
,
6661 struct nfs4_session
*session
)
6665 ret
= nfs4_verify_fore_channel_attrs(args
, session
);
6668 return nfs4_verify_back_channel_attrs(args
, session
);
6671 static int _nfs4_proc_create_session(struct nfs_client
*clp
,
6672 struct rpc_cred
*cred
)
6674 struct nfs4_session
*session
= clp
->cl_session
;
6675 struct nfs41_create_session_args args
= {
6677 .cb_program
= NFS4_CALLBACK
,
6679 struct nfs41_create_session_res res
= {
6682 struct rpc_message msg
= {
6683 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE_SESSION
],
6690 nfs4_init_channel_attrs(&args
);
6691 args
.flags
= (SESSION4_PERSIST
| SESSION4_BACK_CHAN
);
6693 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
6694 trace_nfs4_create_session(clp
, status
);
6697 /* Verify the session's negotiated channel_attrs values */
6698 status
= nfs4_verify_channel_attrs(&args
, session
);
6699 /* Increment the clientid slot sequence id */
6707 * Issues a CREATE_SESSION operation to the server.
6708 * It is the responsibility of the caller to verify the session is
6709 * expired before calling this routine.
6711 int nfs4_proc_create_session(struct nfs_client
*clp
, struct rpc_cred
*cred
)
6715 struct nfs4_session
*session
= clp
->cl_session
;
6717 dprintk("--> %s clp=%p session=%p\n", __func__
, clp
, session
);
6719 status
= _nfs4_proc_create_session(clp
, cred
);
6723 /* Init or reset the session slot tables */
6724 status
= nfs4_setup_session_slot_tables(session
);
6725 dprintk("slot table setup returned %d\n", status
);
6729 ptr
= (unsigned *)&session
->sess_id
.data
[0];
6730 dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__
,
6731 clp
->cl_seqid
, ptr
[0], ptr
[1], ptr
[2], ptr
[3]);
6733 dprintk("<-- %s\n", __func__
);
6738 * Issue the over-the-wire RPC DESTROY_SESSION.
6739 * The caller must serialize access to this routine.
6741 int nfs4_proc_destroy_session(struct nfs4_session
*session
,
6742 struct rpc_cred
*cred
)
6744 struct rpc_message msg
= {
6745 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DESTROY_SESSION
],
6746 .rpc_argp
= session
,
6751 dprintk("--> nfs4_proc_destroy_session\n");
6753 /* session is still being setup */
6754 if (session
->clp
->cl_cons_state
!= NFS_CS_READY
)
6757 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
6758 trace_nfs4_destroy_session(session
->clp
, status
);
6761 dprintk("NFS: Got error %d from the server on DESTROY_SESSION. "
6762 "Session has been destroyed regardless...\n", status
);
6764 dprintk("<-- nfs4_proc_destroy_session\n");
6769 * Renew the cl_session lease.
6771 struct nfs4_sequence_data
{
6772 struct nfs_client
*clp
;
6773 struct nfs4_sequence_args args
;
6774 struct nfs4_sequence_res res
;
6777 static void nfs41_sequence_release(void *data
)
6779 struct nfs4_sequence_data
*calldata
= data
;
6780 struct nfs_client
*clp
= calldata
->clp
;
6782 if (atomic_read(&clp
->cl_count
) > 1)
6783 nfs4_schedule_state_renewal(clp
);
6784 nfs_put_client(clp
);
6788 static int nfs41_sequence_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
6790 switch(task
->tk_status
) {
6791 case -NFS4ERR_DELAY
:
6792 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
6795 nfs4_schedule_lease_recovery(clp
);
6800 static void nfs41_sequence_call_done(struct rpc_task
*task
, void *data
)
6802 struct nfs4_sequence_data
*calldata
= data
;
6803 struct nfs_client
*clp
= calldata
->clp
;
6805 if (!nfs41_sequence_done(task
, task
->tk_msg
.rpc_resp
))
6808 trace_nfs4_sequence(clp
, task
->tk_status
);
6809 if (task
->tk_status
< 0) {
6810 dprintk("%s ERROR %d\n", __func__
, task
->tk_status
);
6811 if (atomic_read(&clp
->cl_count
) == 1)
6814 if (nfs41_sequence_handle_errors(task
, clp
) == -EAGAIN
) {
6815 rpc_restart_call_prepare(task
);
6819 dprintk("%s rpc_cred %p\n", __func__
, task
->tk_msg
.rpc_cred
);
6821 dprintk("<-- %s\n", __func__
);
6824 static void nfs41_sequence_prepare(struct rpc_task
*task
, void *data
)
6826 struct nfs4_sequence_data
*calldata
= data
;
6827 struct nfs_client
*clp
= calldata
->clp
;
6828 struct nfs4_sequence_args
*args
;
6829 struct nfs4_sequence_res
*res
;
6831 args
= task
->tk_msg
.rpc_argp
;
6832 res
= task
->tk_msg
.rpc_resp
;
6834 nfs41_setup_sequence(clp
->cl_session
, args
, res
, task
);
6837 static const struct rpc_call_ops nfs41_sequence_ops
= {
6838 .rpc_call_done
= nfs41_sequence_call_done
,
6839 .rpc_call_prepare
= nfs41_sequence_prepare
,
6840 .rpc_release
= nfs41_sequence_release
,
6843 static struct rpc_task
*_nfs41_proc_sequence(struct nfs_client
*clp
,
6844 struct rpc_cred
*cred
,
6847 struct nfs4_sequence_data
*calldata
;
6848 struct rpc_message msg
= {
6849 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SEQUENCE
],
6852 struct rpc_task_setup task_setup_data
= {
6853 .rpc_client
= clp
->cl_rpcclient
,
6854 .rpc_message
= &msg
,
6855 .callback_ops
= &nfs41_sequence_ops
,
6856 .flags
= RPC_TASK_ASYNC
| RPC_TASK_TIMEOUT
,
6859 if (!atomic_inc_not_zero(&clp
->cl_count
))
6860 return ERR_PTR(-EIO
);
6861 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
6862 if (calldata
== NULL
) {
6863 nfs_put_client(clp
);
6864 return ERR_PTR(-ENOMEM
);
6866 nfs4_init_sequence(&calldata
->args
, &calldata
->res
, 0);
6868 nfs4_set_sequence_privileged(&calldata
->args
);
6869 msg
.rpc_argp
= &calldata
->args
;
6870 msg
.rpc_resp
= &calldata
->res
;
6871 calldata
->clp
= clp
;
6872 task_setup_data
.callback_data
= calldata
;
6874 return rpc_run_task(&task_setup_data
);
6877 static int nfs41_proc_async_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
, unsigned renew_flags
)
6879 struct rpc_task
*task
;
6882 if ((renew_flags
& NFS4_RENEW_TIMEOUT
) == 0)
6884 task
= _nfs41_proc_sequence(clp
, cred
, false);
6886 ret
= PTR_ERR(task
);
6888 rpc_put_task_async(task
);
6889 dprintk("<-- %s status=%d\n", __func__
, ret
);
6893 static int nfs4_proc_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
)
6895 struct rpc_task
*task
;
6898 task
= _nfs41_proc_sequence(clp
, cred
, true);
6900 ret
= PTR_ERR(task
);
6903 ret
= rpc_wait_for_completion_task(task
);
6905 struct nfs4_sequence_res
*res
= task
->tk_msg
.rpc_resp
;
6907 if (task
->tk_status
== 0)
6908 nfs41_handle_sequence_flag_errors(clp
, res
->sr_status_flags
);
6909 ret
= task
->tk_status
;
6913 dprintk("<-- %s status=%d\n", __func__
, ret
);
6917 struct nfs4_reclaim_complete_data
{
6918 struct nfs_client
*clp
;
6919 struct nfs41_reclaim_complete_args arg
;
6920 struct nfs41_reclaim_complete_res res
;
6923 static void nfs4_reclaim_complete_prepare(struct rpc_task
*task
, void *data
)
6925 struct nfs4_reclaim_complete_data
*calldata
= data
;
6927 nfs41_setup_sequence(calldata
->clp
->cl_session
,
6928 &calldata
->arg
.seq_args
,
6929 &calldata
->res
.seq_res
,
6933 static int nfs41_reclaim_complete_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
6935 switch(task
->tk_status
) {
6937 case -NFS4ERR_COMPLETE_ALREADY
:
6938 case -NFS4ERR_WRONG_CRED
: /* What to do here? */
6940 case -NFS4ERR_DELAY
:
6941 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
6943 case -NFS4ERR_RETRY_UNCACHED_REP
:
6946 nfs4_schedule_lease_recovery(clp
);
6951 static void nfs4_reclaim_complete_done(struct rpc_task
*task
, void *data
)
6953 struct nfs4_reclaim_complete_data
*calldata
= data
;
6954 struct nfs_client
*clp
= calldata
->clp
;
6955 struct nfs4_sequence_res
*res
= &calldata
->res
.seq_res
;
6957 dprintk("--> %s\n", __func__
);
6958 if (!nfs41_sequence_done(task
, res
))
6961 trace_nfs4_reclaim_complete(clp
, task
->tk_status
);
6962 if (nfs41_reclaim_complete_handle_errors(task
, clp
) == -EAGAIN
) {
6963 rpc_restart_call_prepare(task
);
6966 dprintk("<-- %s\n", __func__
);
6969 static void nfs4_free_reclaim_complete_data(void *data
)
6971 struct nfs4_reclaim_complete_data
*calldata
= data
;
6976 static const struct rpc_call_ops nfs4_reclaim_complete_call_ops
= {
6977 .rpc_call_prepare
= nfs4_reclaim_complete_prepare
,
6978 .rpc_call_done
= nfs4_reclaim_complete_done
,
6979 .rpc_release
= nfs4_free_reclaim_complete_data
,
6983 * Issue a global reclaim complete.
6985 static int nfs41_proc_reclaim_complete(struct nfs_client
*clp
,
6986 struct rpc_cred
*cred
)
6988 struct nfs4_reclaim_complete_data
*calldata
;
6989 struct rpc_task
*task
;
6990 struct rpc_message msg
= {
6991 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RECLAIM_COMPLETE
],
6994 struct rpc_task_setup task_setup_data
= {
6995 .rpc_client
= clp
->cl_rpcclient
,
6996 .rpc_message
= &msg
,
6997 .callback_ops
= &nfs4_reclaim_complete_call_ops
,
6998 .flags
= RPC_TASK_ASYNC
,
7000 int status
= -ENOMEM
;
7002 dprintk("--> %s\n", __func__
);
7003 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
7004 if (calldata
== NULL
)
7006 calldata
->clp
= clp
;
7007 calldata
->arg
.one_fs
= 0;
7009 nfs4_init_sequence(&calldata
->arg
.seq_args
, &calldata
->res
.seq_res
, 0);
7010 nfs4_set_sequence_privileged(&calldata
->arg
.seq_args
);
7011 msg
.rpc_argp
= &calldata
->arg
;
7012 msg
.rpc_resp
= &calldata
->res
;
7013 task_setup_data
.callback_data
= calldata
;
7014 task
= rpc_run_task(&task_setup_data
);
7016 status
= PTR_ERR(task
);
7019 status
= nfs4_wait_for_completion_rpc_task(task
);
7021 status
= task
->tk_status
;
7025 dprintk("<-- %s status=%d\n", __func__
, status
);
7030 nfs4_layoutget_prepare(struct rpc_task
*task
, void *calldata
)
7032 struct nfs4_layoutget
*lgp
= calldata
;
7033 struct nfs_server
*server
= NFS_SERVER(lgp
->args
.inode
);
7034 struct nfs4_session
*session
= nfs4_get_session(server
);
7036 dprintk("--> %s\n", __func__
);
7037 /* Note the is a race here, where a CB_LAYOUTRECALL can come in
7038 * right now covering the LAYOUTGET we are about to send.
7039 * However, that is not so catastrophic, and there seems
7040 * to be no way to prevent it completely.
7042 if (nfs41_setup_sequence(session
, &lgp
->args
.seq_args
,
7043 &lgp
->res
.seq_res
, task
))
7045 if (pnfs_choose_layoutget_stateid(&lgp
->args
.stateid
,
7046 NFS_I(lgp
->args
.inode
)->layout
,
7047 lgp
->args
.ctx
->state
)) {
7048 rpc_exit(task
, NFS4_OK
);
7052 static void nfs4_layoutget_done(struct rpc_task
*task
, void *calldata
)
7054 struct nfs4_layoutget
*lgp
= calldata
;
7055 struct inode
*inode
= lgp
->args
.inode
;
7056 struct nfs_server
*server
= NFS_SERVER(inode
);
7057 struct pnfs_layout_hdr
*lo
;
7058 struct nfs4_state
*state
= NULL
;
7059 unsigned long timeo
, giveup
;
7061 dprintk("--> %s\n", __func__
);
7063 if (!nfs41_sequence_done(task
, &lgp
->res
.seq_res
))
7066 switch (task
->tk_status
) {
7069 case -NFS4ERR_LAYOUTTRYLATER
:
7070 case -NFS4ERR_RECALLCONFLICT
:
7071 timeo
= rpc_get_timeout(task
->tk_client
);
7072 giveup
= lgp
->args
.timestamp
+ timeo
;
7073 if (time_after(giveup
, jiffies
))
7074 task
->tk_status
= -NFS4ERR_DELAY
;
7076 case -NFS4ERR_EXPIRED
:
7077 case -NFS4ERR_BAD_STATEID
:
7078 spin_lock(&inode
->i_lock
);
7079 lo
= NFS_I(inode
)->layout
;
7080 if (!lo
|| list_empty(&lo
->plh_segs
)) {
7081 spin_unlock(&inode
->i_lock
);
7082 /* If the open stateid was bad, then recover it. */
7083 state
= lgp
->args
.ctx
->state
;
7087 pnfs_mark_matching_lsegs_invalid(lo
, &head
, NULL
);
7088 spin_unlock(&inode
->i_lock
);
7089 /* Mark the bad layout state as invalid, then
7090 * retry using the open stateid. */
7091 pnfs_free_lseg_list(&head
);
7094 if (nfs4_async_handle_error(task
, server
, state
) == -EAGAIN
)
7095 rpc_restart_call_prepare(task
);
7097 dprintk("<-- %s\n", __func__
);
7100 static size_t max_response_pages(struct nfs_server
*server
)
7102 u32 max_resp_sz
= server
->nfs_client
->cl_session
->fc_attrs
.max_resp_sz
;
7103 return nfs_page_array_len(0, max_resp_sz
);
7106 static void nfs4_free_pages(struct page
**pages
, size_t size
)
7113 for (i
= 0; i
< size
; i
++) {
7116 __free_page(pages
[i
]);
7121 static struct page
**nfs4_alloc_pages(size_t size
, gfp_t gfp_flags
)
7123 struct page
**pages
;
7126 pages
= kcalloc(size
, sizeof(struct page
*), gfp_flags
);
7128 dprintk("%s: can't alloc array of %zu pages\n", __func__
, size
);
7132 for (i
= 0; i
< size
; i
++) {
7133 pages
[i
] = alloc_page(gfp_flags
);
7135 dprintk("%s: failed to allocate page\n", __func__
);
7136 nfs4_free_pages(pages
, size
);
7144 static void nfs4_layoutget_release(void *calldata
)
7146 struct nfs4_layoutget
*lgp
= calldata
;
7147 struct inode
*inode
= lgp
->args
.inode
;
7148 struct nfs_server
*server
= NFS_SERVER(inode
);
7149 size_t max_pages
= max_response_pages(server
);
7151 dprintk("--> %s\n", __func__
);
7152 nfs4_free_pages(lgp
->args
.layout
.pages
, max_pages
);
7153 pnfs_put_layout_hdr(NFS_I(inode
)->layout
);
7154 put_nfs_open_context(lgp
->args
.ctx
);
7156 dprintk("<-- %s\n", __func__
);
7159 static const struct rpc_call_ops nfs4_layoutget_call_ops
= {
7160 .rpc_call_prepare
= nfs4_layoutget_prepare
,
7161 .rpc_call_done
= nfs4_layoutget_done
,
7162 .rpc_release
= nfs4_layoutget_release
,
7165 struct pnfs_layout_segment
*
7166 nfs4_proc_layoutget(struct nfs4_layoutget
*lgp
, gfp_t gfp_flags
)
7168 struct inode
*inode
= lgp
->args
.inode
;
7169 struct nfs_server
*server
= NFS_SERVER(inode
);
7170 size_t max_pages
= max_response_pages(server
);
7171 struct rpc_task
*task
;
7172 struct rpc_message msg
= {
7173 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTGET
],
7174 .rpc_argp
= &lgp
->args
,
7175 .rpc_resp
= &lgp
->res
,
7176 .rpc_cred
= lgp
->cred
,
7178 struct rpc_task_setup task_setup_data
= {
7179 .rpc_client
= server
->client
,
7180 .rpc_message
= &msg
,
7181 .callback_ops
= &nfs4_layoutget_call_ops
,
7182 .callback_data
= lgp
,
7183 .flags
= RPC_TASK_ASYNC
,
7185 struct pnfs_layout_segment
*lseg
= NULL
;
7188 dprintk("--> %s\n", __func__
);
7190 lgp
->args
.layout
.pages
= nfs4_alloc_pages(max_pages
, gfp_flags
);
7191 if (!lgp
->args
.layout
.pages
) {
7192 nfs4_layoutget_release(lgp
);
7193 return ERR_PTR(-ENOMEM
);
7195 lgp
->args
.layout
.pglen
= max_pages
* PAGE_SIZE
;
7196 lgp
->args
.timestamp
= jiffies
;
7198 lgp
->res
.layoutp
= &lgp
->args
.layout
;
7199 lgp
->res
.seq_res
.sr_slot
= NULL
;
7200 nfs4_init_sequence(&lgp
->args
.seq_args
, &lgp
->res
.seq_res
, 0);
7202 /* nfs4_layoutget_release calls pnfs_put_layout_hdr */
7203 pnfs_get_layout_hdr(NFS_I(inode
)->layout
);
7205 task
= rpc_run_task(&task_setup_data
);
7207 return ERR_CAST(task
);
7208 status
= nfs4_wait_for_completion_rpc_task(task
);
7210 status
= task
->tk_status
;
7211 trace_nfs4_layoutget(lgp
->args
.ctx
,
7215 /* if layoutp->len is 0, nfs4_layoutget_prepare called rpc_exit */
7216 if (status
== 0 && lgp
->res
.layoutp
->len
)
7217 lseg
= pnfs_layout_process(lgp
);
7219 dprintk("<-- %s status=%d\n", __func__
, status
);
7221 return ERR_PTR(status
);
7226 nfs4_layoutreturn_prepare(struct rpc_task
*task
, void *calldata
)
7228 struct nfs4_layoutreturn
*lrp
= calldata
;
7230 dprintk("--> %s\n", __func__
);
7231 nfs41_setup_sequence(lrp
->clp
->cl_session
,
7232 &lrp
->args
.seq_args
,
7237 static void nfs4_layoutreturn_done(struct rpc_task
*task
, void *calldata
)
7239 struct nfs4_layoutreturn
*lrp
= calldata
;
7240 struct nfs_server
*server
;
7242 dprintk("--> %s\n", __func__
);
7244 if (!nfs41_sequence_done(task
, &lrp
->res
.seq_res
))
7247 server
= NFS_SERVER(lrp
->args
.inode
);
7248 if (nfs4_async_handle_error(task
, server
, NULL
) == -EAGAIN
) {
7249 rpc_restart_call_prepare(task
);
7252 dprintk("<-- %s\n", __func__
);
7255 static void nfs4_layoutreturn_release(void *calldata
)
7257 struct nfs4_layoutreturn
*lrp
= calldata
;
7258 struct pnfs_layout_hdr
*lo
= lrp
->args
.layout
;
7260 dprintk("--> %s\n", __func__
);
7261 spin_lock(&lo
->plh_inode
->i_lock
);
7262 if (lrp
->res
.lrs_present
)
7263 pnfs_set_layout_stateid(lo
, &lrp
->res
.stateid
, true);
7264 lo
->plh_block_lgets
--;
7265 spin_unlock(&lo
->plh_inode
->i_lock
);
7266 pnfs_put_layout_hdr(lrp
->args
.layout
);
7268 dprintk("<-- %s\n", __func__
);
7271 static const struct rpc_call_ops nfs4_layoutreturn_call_ops
= {
7272 .rpc_call_prepare
= nfs4_layoutreturn_prepare
,
7273 .rpc_call_done
= nfs4_layoutreturn_done
,
7274 .rpc_release
= nfs4_layoutreturn_release
,
7277 int nfs4_proc_layoutreturn(struct nfs4_layoutreturn
*lrp
)
7279 struct rpc_task
*task
;
7280 struct rpc_message msg
= {
7281 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTRETURN
],
7282 .rpc_argp
= &lrp
->args
,
7283 .rpc_resp
= &lrp
->res
,
7284 .rpc_cred
= lrp
->cred
,
7286 struct rpc_task_setup task_setup_data
= {
7287 .rpc_client
= NFS_SERVER(lrp
->args
.inode
)->client
,
7288 .rpc_message
= &msg
,
7289 .callback_ops
= &nfs4_layoutreturn_call_ops
,
7290 .callback_data
= lrp
,
7294 dprintk("--> %s\n", __func__
);
7295 nfs4_init_sequence(&lrp
->args
.seq_args
, &lrp
->res
.seq_res
, 1);
7296 task
= rpc_run_task(&task_setup_data
);
7298 return PTR_ERR(task
);
7299 status
= task
->tk_status
;
7300 trace_nfs4_layoutreturn(lrp
->args
.inode
, status
);
7301 dprintk("<-- %s status=%d\n", __func__
, status
);
7307 * Retrieve the list of Data Server devices from the MDS.
7309 static int _nfs4_getdevicelist(struct nfs_server
*server
,
7310 const struct nfs_fh
*fh
,
7311 struct pnfs_devicelist
*devlist
)
7313 struct nfs4_getdevicelist_args args
= {
7315 .layoutclass
= server
->pnfs_curr_ld
->id
,
7317 struct nfs4_getdevicelist_res res
= {
7320 struct rpc_message msg
= {
7321 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETDEVICELIST
],
7327 dprintk("--> %s\n", __func__
);
7328 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
,
7330 dprintk("<-- %s status=%d\n", __func__
, status
);
7334 int nfs4_proc_getdevicelist(struct nfs_server
*server
,
7335 const struct nfs_fh
*fh
,
7336 struct pnfs_devicelist
*devlist
)
7338 struct nfs4_exception exception
= { };
7342 err
= nfs4_handle_exception(server
,
7343 _nfs4_getdevicelist(server
, fh
, devlist
),
7345 } while (exception
.retry
);
7347 dprintk("%s: err=%d, num_devs=%u\n", __func__
,
7348 err
, devlist
->num_devs
);
7352 EXPORT_SYMBOL_GPL(nfs4_proc_getdevicelist
);
7355 _nfs4_proc_getdeviceinfo(struct nfs_server
*server
,
7356 struct pnfs_device
*pdev
,
7357 struct rpc_cred
*cred
)
7359 struct nfs4_getdeviceinfo_args args
= {
7362 struct nfs4_getdeviceinfo_res res
= {
7365 struct rpc_message msg
= {
7366 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETDEVICEINFO
],
7373 dprintk("--> %s\n", __func__
);
7374 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
7375 dprintk("<-- %s status=%d\n", __func__
, status
);
7380 int nfs4_proc_getdeviceinfo(struct nfs_server
*server
,
7381 struct pnfs_device
*pdev
,
7382 struct rpc_cred
*cred
)
7384 struct nfs4_exception exception
= { };
7388 err
= nfs4_handle_exception(server
,
7389 _nfs4_proc_getdeviceinfo(server
, pdev
, cred
),
7391 } while (exception
.retry
);
7394 EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo
);
7396 static void nfs4_layoutcommit_prepare(struct rpc_task
*task
, void *calldata
)
7398 struct nfs4_layoutcommit_data
*data
= calldata
;
7399 struct nfs_server
*server
= NFS_SERVER(data
->args
.inode
);
7400 struct nfs4_session
*session
= nfs4_get_session(server
);
7402 nfs41_setup_sequence(session
,
7403 &data
->args
.seq_args
,
7409 nfs4_layoutcommit_done(struct rpc_task
*task
, void *calldata
)
7411 struct nfs4_layoutcommit_data
*data
= calldata
;
7412 struct nfs_server
*server
= NFS_SERVER(data
->args
.inode
);
7414 if (!nfs41_sequence_done(task
, &data
->res
.seq_res
))
7417 switch (task
->tk_status
) { /* Just ignore these failures */
7418 case -NFS4ERR_DELEG_REVOKED
: /* layout was recalled */
7419 case -NFS4ERR_BADIOMODE
: /* no IOMODE_RW layout for range */
7420 case -NFS4ERR_BADLAYOUT
: /* no layout */
7421 case -NFS4ERR_GRACE
: /* loca_recalim always false */
7422 task
->tk_status
= 0;
7425 nfs_post_op_update_inode_force_wcc(data
->args
.inode
,
7429 if (nfs4_async_handle_error(task
, server
, NULL
) == -EAGAIN
) {
7430 rpc_restart_call_prepare(task
);
7436 static void nfs4_layoutcommit_release(void *calldata
)
7438 struct nfs4_layoutcommit_data
*data
= calldata
;
7440 pnfs_cleanup_layoutcommit(data
);
7441 put_rpccred(data
->cred
);
7445 static const struct rpc_call_ops nfs4_layoutcommit_ops
= {
7446 .rpc_call_prepare
= nfs4_layoutcommit_prepare
,
7447 .rpc_call_done
= nfs4_layoutcommit_done
,
7448 .rpc_release
= nfs4_layoutcommit_release
,
7452 nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data
*data
, bool sync
)
7454 struct rpc_message msg
= {
7455 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTCOMMIT
],
7456 .rpc_argp
= &data
->args
,
7457 .rpc_resp
= &data
->res
,
7458 .rpc_cred
= data
->cred
,
7460 struct rpc_task_setup task_setup_data
= {
7461 .task
= &data
->task
,
7462 .rpc_client
= NFS_CLIENT(data
->args
.inode
),
7463 .rpc_message
= &msg
,
7464 .callback_ops
= &nfs4_layoutcommit_ops
,
7465 .callback_data
= data
,
7466 .flags
= RPC_TASK_ASYNC
,
7468 struct rpc_task
*task
;
7471 dprintk("NFS: %4d initiating layoutcommit call. sync %d "
7472 "lbw: %llu inode %lu\n",
7473 data
->task
.tk_pid
, sync
,
7474 data
->args
.lastbytewritten
,
7475 data
->args
.inode
->i_ino
);
7477 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
7478 task
= rpc_run_task(&task_setup_data
);
7480 return PTR_ERR(task
);
7483 status
= nfs4_wait_for_completion_rpc_task(task
);
7486 status
= task
->tk_status
;
7487 trace_nfs4_layoutcommit(data
->args
.inode
, status
);
7489 dprintk("%s: status %d\n", __func__
, status
);
7495 * Use the state managment nfs_client cl_rpcclient, which uses krb5i (if
7496 * possible) as per RFC3530bis and RFC5661 Security Considerations sections
7499 _nfs41_proc_secinfo_no_name(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
7500 struct nfs_fsinfo
*info
,
7501 struct nfs4_secinfo_flavors
*flavors
, bool use_integrity
)
7503 struct nfs41_secinfo_no_name_args args
= {
7504 .style
= SECINFO_STYLE_CURRENT_FH
,
7506 struct nfs4_secinfo_res res
= {
7509 struct rpc_message msg
= {
7510 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SECINFO_NO_NAME
],
7514 struct rpc_clnt
*clnt
= server
->client
;
7515 struct rpc_cred
*cred
= NULL
;
7518 if (use_integrity
) {
7519 clnt
= server
->nfs_client
->cl_rpcclient
;
7520 cred
= nfs4_get_clid_cred(server
->nfs_client
);
7521 msg
.rpc_cred
= cred
;
7524 dprintk("--> %s\n", __func__
);
7525 status
= nfs4_call_sync(clnt
, server
, &msg
, &args
.seq_args
,
7527 dprintk("<-- %s status=%d\n", __func__
, status
);
7536 nfs41_proc_secinfo_no_name(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
7537 struct nfs_fsinfo
*info
, struct nfs4_secinfo_flavors
*flavors
)
7539 struct nfs4_exception exception
= { };
7542 /* first try using integrity protection */
7543 err
= -NFS4ERR_WRONGSEC
;
7545 /* try to use integrity protection with machine cred */
7546 if (_nfs4_is_integrity_protected(server
->nfs_client
))
7547 err
= _nfs41_proc_secinfo_no_name(server
, fhandle
, info
,
7551 * if unable to use integrity protection, or SECINFO with
7552 * integrity protection returns NFS4ERR_WRONGSEC (which is
7553 * disallowed by spec, but exists in deployed servers) use
7554 * the current filesystem's rpc_client and the user cred.
7556 if (err
== -NFS4ERR_WRONGSEC
)
7557 err
= _nfs41_proc_secinfo_no_name(server
, fhandle
, info
,
7562 case -NFS4ERR_WRONGSEC
:
7563 case -NFS4ERR_NOTSUPP
:
7566 err
= nfs4_handle_exception(server
, err
, &exception
);
7568 } while (exception
.retry
);
7574 nfs41_find_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
7575 struct nfs_fsinfo
*info
)
7579 rpc_authflavor_t flavor
;
7580 struct nfs4_secinfo_flavors
*flavors
;
7582 page
= alloc_page(GFP_KERNEL
);
7588 flavors
= page_address(page
);
7589 err
= nfs41_proc_secinfo_no_name(server
, fhandle
, info
, flavors
);
7592 * Fall back on "guess and check" method if
7593 * the server doesn't support SECINFO_NO_NAME
7595 if (err
== -NFS4ERR_WRONGSEC
|| err
== -NFS4ERR_NOTSUPP
) {
7596 err
= nfs4_find_root_sec(server
, fhandle
, info
);
7602 flavor
= nfs_find_best_sec(flavors
);
7604 err
= nfs4_lookup_root_sec(server
, fhandle
, info
, flavor
);
7614 static int _nfs41_test_stateid(struct nfs_server
*server
,
7615 nfs4_stateid
*stateid
,
7616 struct rpc_cred
*cred
)
7619 struct nfs41_test_stateid_args args
= {
7622 struct nfs41_test_stateid_res res
;
7623 struct rpc_message msg
= {
7624 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_TEST_STATEID
],
7629 struct rpc_clnt
*rpc_client
= server
->client
;
7631 nfs4_state_protect(server
->nfs_client
, NFS_SP4_MACH_CRED_STATEID
,
7634 dprintk("NFS call test_stateid %p\n", stateid
);
7635 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
7636 nfs4_set_sequence_privileged(&args
.seq_args
);
7637 status
= nfs4_call_sync_sequence(rpc_client
, server
, &msg
,
7638 &args
.seq_args
, &res
.seq_res
);
7639 if (status
!= NFS_OK
) {
7640 dprintk("NFS reply test_stateid: failed, %d\n", status
);
7643 dprintk("NFS reply test_stateid: succeeded, %d\n", -res
.status
);
7648 * nfs41_test_stateid - perform a TEST_STATEID operation
7650 * @server: server / transport on which to perform the operation
7651 * @stateid: state ID to test
7654 * Returns NFS_OK if the server recognizes that "stateid" is valid.
7655 * Otherwise a negative NFS4ERR value is returned if the operation
7656 * failed or the state ID is not currently valid.
7658 static int nfs41_test_stateid(struct nfs_server
*server
,
7659 nfs4_stateid
*stateid
,
7660 struct rpc_cred
*cred
)
7662 struct nfs4_exception exception
= { };
7665 err
= _nfs41_test_stateid(server
, stateid
, cred
);
7666 if (err
!= -NFS4ERR_DELAY
)
7668 nfs4_handle_exception(server
, err
, &exception
);
7669 } while (exception
.retry
);
7673 struct nfs_free_stateid_data
{
7674 struct nfs_server
*server
;
7675 struct nfs41_free_stateid_args args
;
7676 struct nfs41_free_stateid_res res
;
7679 static void nfs41_free_stateid_prepare(struct rpc_task
*task
, void *calldata
)
7681 struct nfs_free_stateid_data
*data
= calldata
;
7682 nfs41_setup_sequence(nfs4_get_session(data
->server
),
7683 &data
->args
.seq_args
,
7688 static void nfs41_free_stateid_done(struct rpc_task
*task
, void *calldata
)
7690 struct nfs_free_stateid_data
*data
= calldata
;
7692 nfs41_sequence_done(task
, &data
->res
.seq_res
);
7694 switch (task
->tk_status
) {
7695 case -NFS4ERR_DELAY
:
7696 if (nfs4_async_handle_error(task
, data
->server
, NULL
) == -EAGAIN
)
7697 rpc_restart_call_prepare(task
);
7701 static void nfs41_free_stateid_release(void *calldata
)
7706 static const struct rpc_call_ops nfs41_free_stateid_ops
= {
7707 .rpc_call_prepare
= nfs41_free_stateid_prepare
,
7708 .rpc_call_done
= nfs41_free_stateid_done
,
7709 .rpc_release
= nfs41_free_stateid_release
,
7712 static struct rpc_task
*_nfs41_free_stateid(struct nfs_server
*server
,
7713 nfs4_stateid
*stateid
,
7714 struct rpc_cred
*cred
,
7717 struct rpc_message msg
= {
7718 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FREE_STATEID
],
7721 struct rpc_task_setup task_setup
= {
7722 .rpc_client
= server
->client
,
7723 .rpc_message
= &msg
,
7724 .callback_ops
= &nfs41_free_stateid_ops
,
7725 .flags
= RPC_TASK_ASYNC
,
7727 struct nfs_free_stateid_data
*data
;
7729 nfs4_state_protect(server
->nfs_client
, NFS_SP4_MACH_CRED_STATEID
,
7730 &task_setup
.rpc_client
, &msg
);
7732 dprintk("NFS call free_stateid %p\n", stateid
);
7733 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
7735 return ERR_PTR(-ENOMEM
);
7736 data
->server
= server
;
7737 nfs4_stateid_copy(&data
->args
.stateid
, stateid
);
7739 task_setup
.callback_data
= data
;
7741 msg
.rpc_argp
= &data
->args
;
7742 msg
.rpc_resp
= &data
->res
;
7743 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 0);
7745 nfs4_set_sequence_privileged(&data
->args
.seq_args
);
7747 return rpc_run_task(&task_setup
);
7751 * nfs41_free_stateid - perform a FREE_STATEID operation
7753 * @server: server / transport on which to perform the operation
7754 * @stateid: state ID to release
7757 * Returns NFS_OK if the server freed "stateid". Otherwise a
7758 * negative NFS4ERR value is returned.
7760 static int nfs41_free_stateid(struct nfs_server
*server
,
7761 nfs4_stateid
*stateid
,
7762 struct rpc_cred
*cred
)
7764 struct rpc_task
*task
;
7767 task
= _nfs41_free_stateid(server
, stateid
, cred
, true);
7769 return PTR_ERR(task
);
7770 ret
= rpc_wait_for_completion_task(task
);
7772 ret
= task
->tk_status
;
7777 static int nfs41_free_lock_state(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
)
7779 struct rpc_task
*task
;
7780 struct rpc_cred
*cred
= lsp
->ls_state
->owner
->so_cred
;
7782 task
= _nfs41_free_stateid(server
, &lsp
->ls_stateid
, cred
, false);
7783 nfs4_free_lock_state(server
, lsp
);
7785 return PTR_ERR(task
);
7790 static bool nfs41_match_stateid(const nfs4_stateid
*s1
,
7791 const nfs4_stateid
*s2
)
7793 if (memcmp(s1
->other
, s2
->other
, sizeof(s1
->other
)) != 0)
7796 if (s1
->seqid
== s2
->seqid
)
7798 if (s1
->seqid
== 0 || s2
->seqid
== 0)
7804 #endif /* CONFIG_NFS_V4_1 */
7806 static bool nfs4_match_stateid(const nfs4_stateid
*s1
,
7807 const nfs4_stateid
*s2
)
7809 return nfs4_stateid_match(s1
, s2
);
7813 static const struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops
= {
7814 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
7815 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
7816 .recover_open
= nfs4_open_reclaim
,
7817 .recover_lock
= nfs4_lock_reclaim
,
7818 .establish_clid
= nfs4_init_clientid
,
7819 .detect_trunking
= nfs40_discover_server_trunking
,
7822 #if defined(CONFIG_NFS_V4_1)
7823 static const struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops
= {
7824 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
7825 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
7826 .recover_open
= nfs4_open_reclaim
,
7827 .recover_lock
= nfs4_lock_reclaim
,
7828 .establish_clid
= nfs41_init_clientid
,
7829 .reclaim_complete
= nfs41_proc_reclaim_complete
,
7830 .detect_trunking
= nfs41_discover_server_trunking
,
7832 #endif /* CONFIG_NFS_V4_1 */
7834 static const struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops
= {
7835 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
7836 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
7837 .recover_open
= nfs4_open_expired
,
7838 .recover_lock
= nfs4_lock_expired
,
7839 .establish_clid
= nfs4_init_clientid
,
7842 #if defined(CONFIG_NFS_V4_1)
7843 static const struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops
= {
7844 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
7845 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
7846 .recover_open
= nfs41_open_expired
,
7847 .recover_lock
= nfs41_lock_expired
,
7848 .establish_clid
= nfs41_init_clientid
,
7850 #endif /* CONFIG_NFS_V4_1 */
7852 static const struct nfs4_state_maintenance_ops nfs40_state_renewal_ops
= {
7853 .sched_state_renewal
= nfs4_proc_async_renew
,
7854 .get_state_renewal_cred_locked
= nfs4_get_renew_cred_locked
,
7855 .renew_lease
= nfs4_proc_renew
,
7858 #if defined(CONFIG_NFS_V4_1)
7859 static const struct nfs4_state_maintenance_ops nfs41_state_renewal_ops
= {
7860 .sched_state_renewal
= nfs41_proc_async_sequence
,
7861 .get_state_renewal_cred_locked
= nfs4_get_machine_cred_locked
,
7862 .renew_lease
= nfs4_proc_sequence
,
7866 static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops
= {
7868 .init_caps
= NFS_CAP_READDIRPLUS
7869 | NFS_CAP_ATOMIC_OPEN
7870 | NFS_CAP_CHANGE_ATTR
7871 | NFS_CAP_POSIX_LOCK
,
7872 .init_client
= nfs40_init_client
,
7873 .shutdown_client
= nfs40_shutdown_client
,
7874 .match_stateid
= nfs4_match_stateid
,
7875 .find_root_sec
= nfs4_find_root_sec
,
7876 .free_lock_state
= nfs4_release_lockowner
,
7877 .call_sync_ops
= &nfs40_call_sync_ops
,
7878 .reboot_recovery_ops
= &nfs40_reboot_recovery_ops
,
7879 .nograce_recovery_ops
= &nfs40_nograce_recovery_ops
,
7880 .state_renewal_ops
= &nfs40_state_renewal_ops
,
7883 #if defined(CONFIG_NFS_V4_1)
7884 static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops
= {
7886 .init_caps
= NFS_CAP_READDIRPLUS
7887 | NFS_CAP_ATOMIC_OPEN
7888 | NFS_CAP_CHANGE_ATTR
7889 | NFS_CAP_POSIX_LOCK
7890 | NFS_CAP_STATEID_NFSV41
7891 | NFS_CAP_ATOMIC_OPEN_V1
,
7892 .init_client
= nfs41_init_client
,
7893 .shutdown_client
= nfs41_shutdown_client
,
7894 .match_stateid
= nfs41_match_stateid
,
7895 .find_root_sec
= nfs41_find_root_sec
,
7896 .free_lock_state
= nfs41_free_lock_state
,
7897 .call_sync_ops
= &nfs41_call_sync_ops
,
7898 .reboot_recovery_ops
= &nfs41_reboot_recovery_ops
,
7899 .nograce_recovery_ops
= &nfs41_nograce_recovery_ops
,
7900 .state_renewal_ops
= &nfs41_state_renewal_ops
,
7904 #if defined(CONFIG_NFS_V4_2)
7905 static const struct nfs4_minor_version_ops nfs_v4_2_minor_ops
= {
7907 .init_caps
= NFS_CAP_READDIRPLUS
7908 | NFS_CAP_ATOMIC_OPEN
7909 | NFS_CAP_CHANGE_ATTR
7910 | NFS_CAP_POSIX_LOCK
7911 | NFS_CAP_STATEID_NFSV41
7912 | NFS_CAP_ATOMIC_OPEN_V1
,
7913 .init_client
= nfs41_init_client
,
7914 .shutdown_client
= nfs41_shutdown_client
,
7915 .match_stateid
= nfs41_match_stateid
,
7916 .find_root_sec
= nfs41_find_root_sec
,
7917 .free_lock_state
= nfs41_free_lock_state
,
7918 .call_sync_ops
= &nfs41_call_sync_ops
,
7919 .reboot_recovery_ops
= &nfs41_reboot_recovery_ops
,
7920 .nograce_recovery_ops
= &nfs41_nograce_recovery_ops
,
7921 .state_renewal_ops
= &nfs41_state_renewal_ops
,
7925 const struct nfs4_minor_version_ops
*nfs_v4_minor_ops
[] = {
7926 [0] = &nfs_v4_0_minor_ops
,
7927 #if defined(CONFIG_NFS_V4_1)
7928 [1] = &nfs_v4_1_minor_ops
,
7930 #if defined(CONFIG_NFS_V4_2)
7931 [2] = &nfs_v4_2_minor_ops
,
7935 static const struct inode_operations nfs4_dir_inode_operations
= {
7936 .create
= nfs_create
,
7937 .lookup
= nfs_lookup
,
7938 .atomic_open
= nfs_atomic_open
,
7940 .unlink
= nfs_unlink
,
7941 .symlink
= nfs_symlink
,
7945 .rename
= nfs_rename
,
7946 .permission
= nfs_permission
,
7947 .getattr
= nfs_getattr
,
7948 .setattr
= nfs_setattr
,
7949 .getxattr
= generic_getxattr
,
7950 .setxattr
= generic_setxattr
,
7951 .listxattr
= generic_listxattr
,
7952 .removexattr
= generic_removexattr
,
7955 static const struct inode_operations nfs4_file_inode_operations
= {
7956 .permission
= nfs_permission
,
7957 .getattr
= nfs_getattr
,
7958 .setattr
= nfs_setattr
,
7959 .getxattr
= generic_getxattr
,
7960 .setxattr
= generic_setxattr
,
7961 .listxattr
= generic_listxattr
,
7962 .removexattr
= generic_removexattr
,
7965 const struct nfs_rpc_ops nfs_v4_clientops
= {
7966 .version
= 4, /* protocol version */
7967 .dentry_ops
= &nfs4_dentry_operations
,
7968 .dir_inode_ops
= &nfs4_dir_inode_operations
,
7969 .file_inode_ops
= &nfs4_file_inode_operations
,
7970 .file_ops
= &nfs4_file_operations
,
7971 .getroot
= nfs4_proc_get_root
,
7972 .submount
= nfs4_submount
,
7973 .try_mount
= nfs4_try_mount
,
7974 .getattr
= nfs4_proc_getattr
,
7975 .setattr
= nfs4_proc_setattr
,
7976 .lookup
= nfs4_proc_lookup
,
7977 .access
= nfs4_proc_access
,
7978 .readlink
= nfs4_proc_readlink
,
7979 .create
= nfs4_proc_create
,
7980 .remove
= nfs4_proc_remove
,
7981 .unlink_setup
= nfs4_proc_unlink_setup
,
7982 .unlink_rpc_prepare
= nfs4_proc_unlink_rpc_prepare
,
7983 .unlink_done
= nfs4_proc_unlink_done
,
7984 .rename
= nfs4_proc_rename
,
7985 .rename_setup
= nfs4_proc_rename_setup
,
7986 .rename_rpc_prepare
= nfs4_proc_rename_rpc_prepare
,
7987 .rename_done
= nfs4_proc_rename_done
,
7988 .link
= nfs4_proc_link
,
7989 .symlink
= nfs4_proc_symlink
,
7990 .mkdir
= nfs4_proc_mkdir
,
7991 .rmdir
= nfs4_proc_remove
,
7992 .readdir
= nfs4_proc_readdir
,
7993 .mknod
= nfs4_proc_mknod
,
7994 .statfs
= nfs4_proc_statfs
,
7995 .fsinfo
= nfs4_proc_fsinfo
,
7996 .pathconf
= nfs4_proc_pathconf
,
7997 .set_capabilities
= nfs4_server_capabilities
,
7998 .decode_dirent
= nfs4_decode_dirent
,
7999 .read_setup
= nfs4_proc_read_setup
,
8000 .read_pageio_init
= pnfs_pageio_init_read
,
8001 .read_rpc_prepare
= nfs4_proc_read_rpc_prepare
,
8002 .read_done
= nfs4_read_done
,
8003 .write_setup
= nfs4_proc_write_setup
,
8004 .write_pageio_init
= pnfs_pageio_init_write
,
8005 .write_rpc_prepare
= nfs4_proc_write_rpc_prepare
,
8006 .write_done
= nfs4_write_done
,
8007 .commit_setup
= nfs4_proc_commit_setup
,
8008 .commit_rpc_prepare
= nfs4_proc_commit_rpc_prepare
,
8009 .commit_done
= nfs4_commit_done
,
8010 .lock
= nfs4_proc_lock
,
8011 .clear_acl_cache
= nfs4_zap_acl_attr
,
8012 .close_context
= nfs4_close_context
,
8013 .open_context
= nfs4_atomic_open
,
8014 .have_delegation
= nfs4_have_delegation
,
8015 .return_delegation
= nfs4_inode_return_delegation
,
8016 .alloc_client
= nfs4_alloc_client
,
8017 .init_client
= nfs4_init_client
,
8018 .free_client
= nfs4_free_client
,
8019 .create_server
= nfs4_create_server
,
8020 .clone_server
= nfs_clone_server
,
8023 static const struct xattr_handler nfs4_xattr_nfs4_acl_handler
= {
8024 .prefix
= XATTR_NAME_NFSV4_ACL
,
8025 .list
= nfs4_xattr_list_nfs4_acl
,
8026 .get
= nfs4_xattr_get_nfs4_acl
,
8027 .set
= nfs4_xattr_set_nfs4_acl
,
8030 const struct xattr_handler
*nfs4_xattr_handlers
[] = {
8031 &nfs4_xattr_nfs4_acl_handler
,
8032 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
8033 &nfs4_xattr_nfs4_label_handler
,