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/file.h>
42 #include <linux/string.h>
43 #include <linux/ratelimit.h>
44 #include <linux/printk.h>
45 #include <linux/slab.h>
46 #include <linux/sunrpc/clnt.h>
47 #include <linux/nfs.h>
48 #include <linux/nfs4.h>
49 #include <linux/nfs_fs.h>
50 #include <linux/nfs_page.h>
51 #include <linux/nfs_mount.h>
52 #include <linux/namei.h>
53 #include <linux/mount.h>
54 #include <linux/module.h>
55 #include <linux/xattr.h>
56 #include <linux/utsname.h>
57 #include <linux/freezer.h>
60 #include "delegation.h"
66 #include "nfs4idmap.h"
67 #include "nfs4session.h"
70 #include "nfs4trace.h"
72 #define NFSDBG_FACILITY NFSDBG_PROC
74 #define NFS4_POLL_RETRY_MIN (HZ/10)
75 #define NFS4_POLL_RETRY_MAX (15*HZ)
78 static int _nfs4_proc_open(struct nfs4_opendata
*data
);
79 static int _nfs4_recover_proc_open(struct nfs4_opendata
*data
);
80 static int nfs4_do_fsinfo(struct nfs_server
*, struct nfs_fh
*, struct nfs_fsinfo
*);
81 static int nfs4_async_handle_error(struct rpc_task
*, const struct nfs_server
*, struct nfs4_state
*, long *);
82 static void nfs_fixup_referral_attributes(struct nfs_fattr
*fattr
);
83 static int nfs4_proc_getattr(struct nfs_server
*, struct nfs_fh
*, struct nfs_fattr
*, struct nfs4_label
*label
);
84 static int _nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
, struct nfs4_label
*label
);
85 static int nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
86 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
87 struct nfs4_state
*state
, struct nfs4_label
*ilabel
,
88 struct nfs4_label
*olabel
);
89 #ifdef CONFIG_NFS_V4_1
90 static int nfs41_test_stateid(struct nfs_server
*, nfs4_stateid
*,
92 static int nfs41_free_stateid(struct nfs_server
*, nfs4_stateid
*,
96 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
97 static inline struct nfs4_label
*
98 nfs4_label_init_security(struct inode
*dir
, struct dentry
*dentry
,
99 struct iattr
*sattr
, struct nfs4_label
*label
)
106 if (nfs_server_capable(dir
, NFS_CAP_SECURITY_LABEL
) == 0)
109 err
= security_dentry_init_security(dentry
, sattr
->ia_mode
,
110 &dentry
->d_name
, (void **)&label
->label
, &label
->len
);
117 nfs4_label_release_security(struct nfs4_label
*label
)
120 security_release_secctx(label
->label
, label
->len
);
122 static inline u32
*nfs4_bitmask(struct nfs_server
*server
, struct nfs4_label
*label
)
125 return server
->attr_bitmask
;
127 return server
->attr_bitmask_nl
;
130 static inline struct nfs4_label
*
131 nfs4_label_init_security(struct inode
*dir
, struct dentry
*dentry
,
132 struct iattr
*sattr
, struct nfs4_label
*l
)
135 nfs4_label_release_security(struct nfs4_label
*label
)
138 nfs4_bitmask(struct nfs_server
*server
, struct nfs4_label
*label
)
139 { return server
->attr_bitmask
; }
142 /* Prevent leaks of NFSv4 errors into userland */
143 static int nfs4_map_errors(int err
)
148 case -NFS4ERR_RESOURCE
:
149 case -NFS4ERR_LAYOUTTRYLATER
:
150 case -NFS4ERR_RECALLCONFLICT
:
152 case -NFS4ERR_WRONGSEC
:
153 case -NFS4ERR_WRONG_CRED
:
155 case -NFS4ERR_BADOWNER
:
156 case -NFS4ERR_BADNAME
:
158 case -NFS4ERR_SHARE_DENIED
:
160 case -NFS4ERR_MINOR_VERS_MISMATCH
:
161 return -EPROTONOSUPPORT
;
162 case -NFS4ERR_FILE_OPEN
:
165 dprintk("%s could not handle NFSv4 error %d\n",
173 * This is our standard bitmap for GETATTR requests.
175 const u32 nfs4_fattr_bitmap
[3] = {
177 | FATTR4_WORD0_CHANGE
180 | FATTR4_WORD0_FILEID
,
182 | FATTR4_WORD1_NUMLINKS
184 | FATTR4_WORD1_OWNER_GROUP
185 | FATTR4_WORD1_RAWDEV
186 | FATTR4_WORD1_SPACE_USED
187 | FATTR4_WORD1_TIME_ACCESS
188 | FATTR4_WORD1_TIME_METADATA
189 | FATTR4_WORD1_TIME_MODIFY
190 | FATTR4_WORD1_MOUNTED_ON_FILEID
,
191 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
192 FATTR4_WORD2_SECURITY_LABEL
196 static const u32 nfs4_pnfs_open_bitmap
[3] = {
198 | FATTR4_WORD0_CHANGE
201 | FATTR4_WORD0_FILEID
,
203 | FATTR4_WORD1_NUMLINKS
205 | FATTR4_WORD1_OWNER_GROUP
206 | FATTR4_WORD1_RAWDEV
207 | FATTR4_WORD1_SPACE_USED
208 | FATTR4_WORD1_TIME_ACCESS
209 | FATTR4_WORD1_TIME_METADATA
210 | FATTR4_WORD1_TIME_MODIFY
,
211 FATTR4_WORD2_MDSTHRESHOLD
214 static const u32 nfs4_open_noattr_bitmap
[3] = {
216 | FATTR4_WORD0_CHANGE
217 | FATTR4_WORD0_FILEID
,
220 const u32 nfs4_statfs_bitmap
[3] = {
221 FATTR4_WORD0_FILES_AVAIL
222 | FATTR4_WORD0_FILES_FREE
223 | FATTR4_WORD0_FILES_TOTAL
,
224 FATTR4_WORD1_SPACE_AVAIL
225 | FATTR4_WORD1_SPACE_FREE
226 | FATTR4_WORD1_SPACE_TOTAL
229 const u32 nfs4_pathconf_bitmap
[3] = {
231 | FATTR4_WORD0_MAXNAME
,
235 const u32 nfs4_fsinfo_bitmap
[3] = { FATTR4_WORD0_MAXFILESIZE
236 | FATTR4_WORD0_MAXREAD
237 | FATTR4_WORD0_MAXWRITE
238 | FATTR4_WORD0_LEASE_TIME
,
239 FATTR4_WORD1_TIME_DELTA
240 | FATTR4_WORD1_FS_LAYOUT_TYPES
,
241 FATTR4_WORD2_LAYOUT_BLKSIZE
244 const u32 nfs4_fs_locations_bitmap
[3] = {
246 | FATTR4_WORD0_CHANGE
249 | FATTR4_WORD0_FILEID
250 | FATTR4_WORD0_FS_LOCATIONS
,
252 | FATTR4_WORD1_NUMLINKS
254 | FATTR4_WORD1_OWNER_GROUP
255 | FATTR4_WORD1_RAWDEV
256 | FATTR4_WORD1_SPACE_USED
257 | FATTR4_WORD1_TIME_ACCESS
258 | FATTR4_WORD1_TIME_METADATA
259 | FATTR4_WORD1_TIME_MODIFY
260 | FATTR4_WORD1_MOUNTED_ON_FILEID
,
263 static void nfs4_setup_readdir(u64 cookie
, __be32
*verifier
, struct dentry
*dentry
,
264 struct nfs4_readdir_arg
*readdir
)
269 readdir
->cookie
= cookie
;
270 memcpy(&readdir
->verifier
, verifier
, sizeof(readdir
->verifier
));
275 memset(&readdir
->verifier
, 0, sizeof(readdir
->verifier
));
280 * NFSv4 servers do not return entries for '.' and '..'
281 * Therefore, we fake these entries here. We let '.'
282 * have cookie 0 and '..' have cookie 1. Note that
283 * when talking to the server, we always send cookie 0
286 start
= p
= kmap_atomic(*readdir
->pages
);
289 *p
++ = xdr_one
; /* next */
290 *p
++ = xdr_zero
; /* cookie, first word */
291 *p
++ = xdr_one
; /* cookie, second word */
292 *p
++ = xdr_one
; /* entry len */
293 memcpy(p
, ".\0\0\0", 4); /* entry */
295 *p
++ = xdr_one
; /* bitmap length */
296 *p
++ = htonl(FATTR4_WORD0_FILEID
); /* bitmap */
297 *p
++ = htonl(8); /* attribute buffer length */
298 p
= xdr_encode_hyper(p
, NFS_FILEID(d_inode(dentry
)));
301 *p
++ = xdr_one
; /* next */
302 *p
++ = xdr_zero
; /* cookie, first word */
303 *p
++ = xdr_two
; /* cookie, second word */
304 *p
++ = xdr_two
; /* entry len */
305 memcpy(p
, "..\0\0", 4); /* entry */
307 *p
++ = xdr_one
; /* bitmap length */
308 *p
++ = htonl(FATTR4_WORD0_FILEID
); /* bitmap */
309 *p
++ = htonl(8); /* attribute buffer length */
310 p
= xdr_encode_hyper(p
, NFS_FILEID(d_inode(dentry
->d_parent
)));
312 readdir
->pgbase
= (char *)p
- (char *)start
;
313 readdir
->count
-= readdir
->pgbase
;
314 kunmap_atomic(start
);
317 static long nfs4_update_delay(long *timeout
)
321 return NFS4_POLL_RETRY_MAX
;
323 *timeout
= NFS4_POLL_RETRY_MIN
;
324 if (*timeout
> NFS4_POLL_RETRY_MAX
)
325 *timeout
= NFS4_POLL_RETRY_MAX
;
331 static int nfs4_delay(struct rpc_clnt
*clnt
, long *timeout
)
337 freezable_schedule_timeout_killable_unsafe(
338 nfs4_update_delay(timeout
));
339 if (fatal_signal_pending(current
))
344 /* This is the error handling routine for processes that are allowed
347 int nfs4_handle_exception(struct nfs_server
*server
, int errorcode
, struct nfs4_exception
*exception
)
349 struct nfs_client
*clp
= server
->nfs_client
;
350 struct nfs4_state
*state
= exception
->state
;
351 struct inode
*inode
= exception
->inode
;
354 exception
->retry
= 0;
358 case -NFS4ERR_OPENMODE
:
359 if (inode
&& nfs4_have_delegation(inode
, FMODE_READ
)) {
360 nfs4_inode_return_delegation(inode
);
361 exception
->retry
= 1;
366 ret
= nfs4_schedule_stateid_recovery(server
, state
);
369 goto wait_on_recovery
;
370 case -NFS4ERR_DELEG_REVOKED
:
371 case -NFS4ERR_ADMIN_REVOKED
:
372 case -NFS4ERR_BAD_STATEID
:
375 ret
= nfs4_schedule_stateid_recovery(server
, state
);
378 goto wait_on_recovery
;
379 case -NFS4ERR_EXPIRED
:
381 ret
= nfs4_schedule_stateid_recovery(server
, state
);
385 case -NFS4ERR_STALE_STATEID
:
386 case -NFS4ERR_STALE_CLIENTID
:
387 nfs4_schedule_lease_recovery(clp
);
388 goto wait_on_recovery
;
390 ret
= nfs4_schedule_migration_recovery(server
);
393 goto wait_on_recovery
;
394 case -NFS4ERR_LEASE_MOVED
:
395 nfs4_schedule_lease_moved_recovery(clp
);
396 goto wait_on_recovery
;
397 #if defined(CONFIG_NFS_V4_1)
398 case -NFS4ERR_BADSESSION
:
399 case -NFS4ERR_BADSLOT
:
400 case -NFS4ERR_BAD_HIGH_SLOT
:
401 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
402 case -NFS4ERR_DEADSESSION
:
403 case -NFS4ERR_SEQ_FALSE_RETRY
:
404 case -NFS4ERR_SEQ_MISORDERED
:
405 dprintk("%s ERROR: %d Reset session\n", __func__
,
407 nfs4_schedule_session_recovery(clp
->cl_session
, errorcode
);
408 goto wait_on_recovery
;
409 #endif /* defined(CONFIG_NFS_V4_1) */
410 case -NFS4ERR_FILE_OPEN
:
411 if (exception
->timeout
> HZ
) {
412 /* We have retried a decent amount, time to
420 ret
= nfs4_delay(server
->client
, &exception
->timeout
);
423 case -NFS4ERR_RETRY_UNCACHED_REP
:
424 case -NFS4ERR_OLD_STATEID
:
425 exception
->retry
= 1;
427 case -NFS4ERR_BADOWNER
:
428 /* The following works around a Linux server bug! */
429 case -NFS4ERR_BADNAME
:
430 if (server
->caps
& NFS_CAP_UIDGID_NOMAP
) {
431 server
->caps
&= ~NFS_CAP_UIDGID_NOMAP
;
432 exception
->retry
= 1;
433 printk(KERN_WARNING
"NFS: v4 server %s "
434 "does not accept raw "
436 "Reenabling the idmapper.\n",
437 server
->nfs_client
->cl_hostname
);
440 /* We failed to handle the error */
441 return nfs4_map_errors(ret
);
443 ret
= nfs4_wait_clnt_recover(clp
);
444 if (test_bit(NFS_MIG_FAILED
, &server
->mig_status
))
447 exception
->retry
= 1;
452 * Return 'true' if 'clp' is using an rpc_client that is integrity protected
453 * or 'false' otherwise.
455 static bool _nfs4_is_integrity_protected(struct nfs_client
*clp
)
457 rpc_authflavor_t flavor
= clp
->cl_rpcclient
->cl_auth
->au_flavor
;
459 if (flavor
== RPC_AUTH_GSS_KRB5I
||
460 flavor
== RPC_AUTH_GSS_KRB5P
)
466 static void do_renew_lease(struct nfs_client
*clp
, unsigned long timestamp
)
468 spin_lock(&clp
->cl_lock
);
469 if (time_before(clp
->cl_last_renewal
,timestamp
))
470 clp
->cl_last_renewal
= timestamp
;
471 spin_unlock(&clp
->cl_lock
);
474 static void renew_lease(const struct nfs_server
*server
, unsigned long timestamp
)
476 do_renew_lease(server
->nfs_client
, timestamp
);
479 struct nfs4_call_sync_data
{
480 const struct nfs_server
*seq_server
;
481 struct nfs4_sequence_args
*seq_args
;
482 struct nfs4_sequence_res
*seq_res
;
485 static void nfs4_init_sequence(struct nfs4_sequence_args
*args
,
486 struct nfs4_sequence_res
*res
, int cache_reply
)
488 args
->sa_slot
= NULL
;
489 args
->sa_cache_this
= cache_reply
;
490 args
->sa_privileged
= 0;
495 static void nfs4_set_sequence_privileged(struct nfs4_sequence_args
*args
)
497 args
->sa_privileged
= 1;
500 int nfs40_setup_sequence(struct nfs4_slot_table
*tbl
,
501 struct nfs4_sequence_args
*args
,
502 struct nfs4_sequence_res
*res
,
503 struct rpc_task
*task
)
505 struct nfs4_slot
*slot
;
507 /* slot already allocated? */
508 if (res
->sr_slot
!= NULL
)
511 spin_lock(&tbl
->slot_tbl_lock
);
512 if (nfs4_slot_tbl_draining(tbl
) && !args
->sa_privileged
)
515 slot
= nfs4_alloc_slot(tbl
);
517 if (slot
== ERR_PTR(-ENOMEM
))
518 task
->tk_timeout
= HZ
>> 2;
521 spin_unlock(&tbl
->slot_tbl_lock
);
523 args
->sa_slot
= slot
;
527 rpc_call_start(task
);
531 if (args
->sa_privileged
)
532 rpc_sleep_on_priority(&tbl
->slot_tbl_waitq
, task
,
533 NULL
, RPC_PRIORITY_PRIVILEGED
);
535 rpc_sleep_on(&tbl
->slot_tbl_waitq
, task
, NULL
);
536 spin_unlock(&tbl
->slot_tbl_lock
);
539 EXPORT_SYMBOL_GPL(nfs40_setup_sequence
);
541 static int nfs40_sequence_done(struct rpc_task
*task
,
542 struct nfs4_sequence_res
*res
)
544 struct nfs4_slot
*slot
= res
->sr_slot
;
545 struct nfs4_slot_table
*tbl
;
551 spin_lock(&tbl
->slot_tbl_lock
);
552 if (!nfs41_wake_and_assign_slot(tbl
, slot
))
553 nfs4_free_slot(tbl
, slot
);
554 spin_unlock(&tbl
->slot_tbl_lock
);
561 #if defined(CONFIG_NFS_V4_1)
563 static void nfs41_sequence_free_slot(struct nfs4_sequence_res
*res
)
565 struct nfs4_session
*session
;
566 struct nfs4_slot_table
*tbl
;
567 struct nfs4_slot
*slot
= res
->sr_slot
;
568 bool send_new_highest_used_slotid
= false;
571 session
= tbl
->session
;
573 spin_lock(&tbl
->slot_tbl_lock
);
574 /* Be nice to the server: try to ensure that the last transmitted
575 * value for highest_user_slotid <= target_highest_slotid
577 if (tbl
->highest_used_slotid
> tbl
->target_highest_slotid
)
578 send_new_highest_used_slotid
= true;
580 if (nfs41_wake_and_assign_slot(tbl
, slot
)) {
581 send_new_highest_used_slotid
= false;
584 nfs4_free_slot(tbl
, slot
);
586 if (tbl
->highest_used_slotid
!= NFS4_NO_SLOT
)
587 send_new_highest_used_slotid
= false;
589 spin_unlock(&tbl
->slot_tbl_lock
);
591 if (send_new_highest_used_slotid
)
592 nfs41_server_notify_highest_slotid_update(session
->clp
);
595 int nfs41_sequence_done(struct rpc_task
*task
, struct nfs4_sequence_res
*res
)
597 struct nfs4_session
*session
;
598 struct nfs4_slot
*slot
= res
->sr_slot
;
599 struct nfs_client
*clp
;
600 bool interrupted
= false;
605 /* don't increment the sequence number if the task wasn't sent */
606 if (!RPC_WAS_SENT(task
))
609 session
= slot
->table
->session
;
611 if (slot
->interrupted
) {
612 slot
->interrupted
= 0;
616 trace_nfs4_sequence_done(session
, res
);
617 /* Check the SEQUENCE operation status */
618 switch (res
->sr_status
) {
620 /* Update the slot's sequence and clientid lease timer */
623 do_renew_lease(clp
, res
->sr_timestamp
);
624 /* Check sequence flags */
625 if (res
->sr_status_flags
!= 0)
626 nfs4_schedule_lease_recovery(clp
);
627 nfs41_update_target_slotid(slot
->table
, slot
, res
);
631 * sr_status remains 1 if an RPC level error occurred.
632 * The server may or may not have processed the sequence
634 * Mark the slot as having hosted an interrupted RPC call.
636 slot
->interrupted
= 1;
639 /* The server detected a resend of the RPC call and
640 * returned NFS4ERR_DELAY as per Section 2.10.6.2
643 dprintk("%s: slot=%u seq=%u: Operation in progress\n",
648 case -NFS4ERR_BADSLOT
:
650 * The slot id we used was probably retired. Try again
651 * using a different slot id.
654 case -NFS4ERR_SEQ_MISORDERED
:
656 * Was the last operation on this sequence interrupted?
657 * If so, retry after bumping the sequence number.
664 * Could this slot have been previously retired?
665 * If so, then the server may be expecting seq_nr = 1!
667 if (slot
->seq_nr
!= 1) {
672 case -NFS4ERR_SEQ_FALSE_RETRY
:
676 /* Just update the slot sequence no. */
680 /* The session may be reset by one of the error handlers. */
681 dprintk("%s: Error %d free the slot \n", __func__
, res
->sr_status
);
682 nfs41_sequence_free_slot(res
);
686 if (rpc_restart_call_prepare(task
)) {
692 if (!rpc_restart_call(task
))
694 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
697 EXPORT_SYMBOL_GPL(nfs41_sequence_done
);
699 int nfs4_sequence_done(struct rpc_task
*task
, struct nfs4_sequence_res
*res
)
701 if (res
->sr_slot
== NULL
)
703 if (!res
->sr_slot
->table
->session
)
704 return nfs40_sequence_done(task
, res
);
705 return nfs41_sequence_done(task
, res
);
707 EXPORT_SYMBOL_GPL(nfs4_sequence_done
);
709 int nfs41_setup_sequence(struct nfs4_session
*session
,
710 struct nfs4_sequence_args
*args
,
711 struct nfs4_sequence_res
*res
,
712 struct rpc_task
*task
)
714 struct nfs4_slot
*slot
;
715 struct nfs4_slot_table
*tbl
;
717 dprintk("--> %s\n", __func__
);
718 /* slot already allocated? */
719 if (res
->sr_slot
!= NULL
)
722 tbl
= &session
->fc_slot_table
;
724 task
->tk_timeout
= 0;
726 spin_lock(&tbl
->slot_tbl_lock
);
727 if (test_bit(NFS4_SLOT_TBL_DRAINING
, &tbl
->slot_tbl_state
) &&
728 !args
->sa_privileged
) {
729 /* The state manager will wait until the slot table is empty */
730 dprintk("%s session is draining\n", __func__
);
734 slot
= nfs4_alloc_slot(tbl
);
736 /* If out of memory, try again in 1/4 second */
737 if (slot
== ERR_PTR(-ENOMEM
))
738 task
->tk_timeout
= HZ
>> 2;
739 dprintk("<-- %s: no free slots\n", __func__
);
742 spin_unlock(&tbl
->slot_tbl_lock
);
744 args
->sa_slot
= slot
;
746 dprintk("<-- %s slotid=%u seqid=%u\n", __func__
,
747 slot
->slot_nr
, slot
->seq_nr
);
750 res
->sr_timestamp
= jiffies
;
751 res
->sr_status_flags
= 0;
753 * sr_status is only set in decode_sequence, and so will remain
754 * set to 1 if an rpc level failure occurs.
757 trace_nfs4_setup_sequence(session
, args
);
759 rpc_call_start(task
);
762 /* Privileged tasks are queued with top priority */
763 if (args
->sa_privileged
)
764 rpc_sleep_on_priority(&tbl
->slot_tbl_waitq
, task
,
765 NULL
, RPC_PRIORITY_PRIVILEGED
);
767 rpc_sleep_on(&tbl
->slot_tbl_waitq
, task
, NULL
);
768 spin_unlock(&tbl
->slot_tbl_lock
);
771 EXPORT_SYMBOL_GPL(nfs41_setup_sequence
);
773 static int nfs4_setup_sequence(const struct nfs_server
*server
,
774 struct nfs4_sequence_args
*args
,
775 struct nfs4_sequence_res
*res
,
776 struct rpc_task
*task
)
778 struct nfs4_session
*session
= nfs4_get_session(server
);
782 return nfs40_setup_sequence(server
->nfs_client
->cl_slot_tbl
,
785 dprintk("--> %s clp %p session %p sr_slot %u\n",
786 __func__
, session
->clp
, session
, res
->sr_slot
?
787 res
->sr_slot
->slot_nr
: NFS4_NO_SLOT
);
789 ret
= nfs41_setup_sequence(session
, args
, res
, task
);
791 dprintk("<-- %s status=%d\n", __func__
, ret
);
795 static void nfs41_call_sync_prepare(struct rpc_task
*task
, void *calldata
)
797 struct nfs4_call_sync_data
*data
= calldata
;
798 struct nfs4_session
*session
= nfs4_get_session(data
->seq_server
);
800 dprintk("--> %s data->seq_server %p\n", __func__
, data
->seq_server
);
802 nfs41_setup_sequence(session
, data
->seq_args
, data
->seq_res
, task
);
805 static void nfs41_call_sync_done(struct rpc_task
*task
, void *calldata
)
807 struct nfs4_call_sync_data
*data
= calldata
;
809 nfs41_sequence_done(task
, data
->seq_res
);
812 static const struct rpc_call_ops nfs41_call_sync_ops
= {
813 .rpc_call_prepare
= nfs41_call_sync_prepare
,
814 .rpc_call_done
= nfs41_call_sync_done
,
817 #else /* !CONFIG_NFS_V4_1 */
819 static int nfs4_setup_sequence(const struct nfs_server
*server
,
820 struct nfs4_sequence_args
*args
,
821 struct nfs4_sequence_res
*res
,
822 struct rpc_task
*task
)
824 return nfs40_setup_sequence(server
->nfs_client
->cl_slot_tbl
,
828 int nfs4_sequence_done(struct rpc_task
*task
,
829 struct nfs4_sequence_res
*res
)
831 return nfs40_sequence_done(task
, res
);
833 EXPORT_SYMBOL_GPL(nfs4_sequence_done
);
835 #endif /* !CONFIG_NFS_V4_1 */
837 static void nfs40_call_sync_prepare(struct rpc_task
*task
, void *calldata
)
839 struct nfs4_call_sync_data
*data
= calldata
;
840 nfs4_setup_sequence(data
->seq_server
,
841 data
->seq_args
, data
->seq_res
, task
);
844 static void nfs40_call_sync_done(struct rpc_task
*task
, void *calldata
)
846 struct nfs4_call_sync_data
*data
= calldata
;
847 nfs4_sequence_done(task
, data
->seq_res
);
850 static const struct rpc_call_ops nfs40_call_sync_ops
= {
851 .rpc_call_prepare
= nfs40_call_sync_prepare
,
852 .rpc_call_done
= nfs40_call_sync_done
,
855 static int nfs4_call_sync_sequence(struct rpc_clnt
*clnt
,
856 struct nfs_server
*server
,
857 struct rpc_message
*msg
,
858 struct nfs4_sequence_args
*args
,
859 struct nfs4_sequence_res
*res
)
862 struct rpc_task
*task
;
863 struct nfs_client
*clp
= server
->nfs_client
;
864 struct nfs4_call_sync_data data
= {
865 .seq_server
= server
,
869 struct rpc_task_setup task_setup
= {
872 .callback_ops
= clp
->cl_mvops
->call_sync_ops
,
873 .callback_data
= &data
876 task
= rpc_run_task(&task_setup
);
880 ret
= task
->tk_status
;
886 int nfs4_call_sync(struct rpc_clnt
*clnt
,
887 struct nfs_server
*server
,
888 struct rpc_message
*msg
,
889 struct nfs4_sequence_args
*args
,
890 struct nfs4_sequence_res
*res
,
893 nfs4_init_sequence(args
, res
, cache_reply
);
894 return nfs4_call_sync_sequence(clnt
, server
, msg
, args
, res
);
897 static void update_changeattr(struct inode
*dir
, struct nfs4_change_info
*cinfo
)
899 struct nfs_inode
*nfsi
= NFS_I(dir
);
901 spin_lock(&dir
->i_lock
);
902 nfsi
->cache_validity
|= NFS_INO_INVALID_ATTR
|NFS_INO_INVALID_DATA
;
903 if (!cinfo
->atomic
|| cinfo
->before
!= dir
->i_version
)
904 nfs_force_lookup_revalidate(dir
);
905 dir
->i_version
= cinfo
->after
;
906 nfsi
->attr_gencount
= nfs_inc_attr_generation_counter();
907 nfs_fscache_invalidate(dir
);
908 spin_unlock(&dir
->i_lock
);
911 struct nfs4_opendata
{
913 struct nfs_openargs o_arg
;
914 struct nfs_openres o_res
;
915 struct nfs_open_confirmargs c_arg
;
916 struct nfs_open_confirmres c_res
;
917 struct nfs4_string owner_name
;
918 struct nfs4_string group_name
;
919 struct nfs_fattr f_attr
;
920 struct nfs4_label
*f_label
;
922 struct dentry
*dentry
;
923 struct nfs4_state_owner
*owner
;
924 struct nfs4_state
*state
;
926 unsigned long timestamp
;
927 unsigned int rpc_done
: 1;
928 unsigned int file_created
: 1;
929 unsigned int is_recover
: 1;
934 static bool nfs4_clear_cap_atomic_open_v1(struct nfs_server
*server
,
935 int err
, struct nfs4_exception
*exception
)
939 if (!(server
->caps
& NFS_CAP_ATOMIC_OPEN_V1
))
941 server
->caps
&= ~NFS_CAP_ATOMIC_OPEN_V1
;
942 exception
->retry
= 1;
947 nfs4_map_atomic_open_share(struct nfs_server
*server
,
948 fmode_t fmode
, int openflags
)
952 switch (fmode
& (FMODE_READ
| FMODE_WRITE
)) {
954 res
= NFS4_SHARE_ACCESS_READ
;
957 res
= NFS4_SHARE_ACCESS_WRITE
;
959 case FMODE_READ
|FMODE_WRITE
:
960 res
= NFS4_SHARE_ACCESS_BOTH
;
962 if (!(server
->caps
& NFS_CAP_ATOMIC_OPEN_V1
))
964 /* Want no delegation if we're using O_DIRECT */
965 if (openflags
& O_DIRECT
)
966 res
|= NFS4_SHARE_WANT_NO_DELEG
;
971 static enum open_claim_type4
972 nfs4_map_atomic_open_claim(struct nfs_server
*server
,
973 enum open_claim_type4 claim
)
975 if (server
->caps
& NFS_CAP_ATOMIC_OPEN_V1
)
980 case NFS4_OPEN_CLAIM_FH
:
981 return NFS4_OPEN_CLAIM_NULL
;
982 case NFS4_OPEN_CLAIM_DELEG_CUR_FH
:
983 return NFS4_OPEN_CLAIM_DELEGATE_CUR
;
984 case NFS4_OPEN_CLAIM_DELEG_PREV_FH
:
985 return NFS4_OPEN_CLAIM_DELEGATE_PREV
;
989 static void nfs4_init_opendata_res(struct nfs4_opendata
*p
)
991 p
->o_res
.f_attr
= &p
->f_attr
;
992 p
->o_res
.f_label
= p
->f_label
;
993 p
->o_res
.seqid
= p
->o_arg
.seqid
;
994 p
->c_res
.seqid
= p
->c_arg
.seqid
;
995 p
->o_res
.server
= p
->o_arg
.server
;
996 p
->o_res
.access_request
= p
->o_arg
.access
;
997 nfs_fattr_init(&p
->f_attr
);
998 nfs_fattr_init_names(&p
->f_attr
, &p
->owner_name
, &p
->group_name
);
1001 static struct nfs4_opendata
*nfs4_opendata_alloc(struct dentry
*dentry
,
1002 struct nfs4_state_owner
*sp
, fmode_t fmode
, int flags
,
1003 const struct iattr
*attrs
,
1004 struct nfs4_label
*label
,
1005 enum open_claim_type4 claim
,
1008 struct dentry
*parent
= dget_parent(dentry
);
1009 struct inode
*dir
= d_inode(parent
);
1010 struct nfs_server
*server
= NFS_SERVER(dir
);
1011 struct nfs_seqid
*(*alloc_seqid
)(struct nfs_seqid_counter
*, gfp_t
);
1012 struct nfs4_opendata
*p
;
1014 p
= kzalloc(sizeof(*p
), gfp_mask
);
1018 p
->f_label
= nfs4_label_alloc(server
, gfp_mask
);
1019 if (IS_ERR(p
->f_label
))
1022 alloc_seqid
= server
->nfs_client
->cl_mvops
->alloc_seqid
;
1023 p
->o_arg
.seqid
= alloc_seqid(&sp
->so_seqid
, gfp_mask
);
1024 if (IS_ERR(p
->o_arg
.seqid
))
1025 goto err_free_label
;
1026 nfs_sb_active(dentry
->d_sb
);
1027 p
->dentry
= dget(dentry
);
1030 atomic_inc(&sp
->so_count
);
1031 p
->o_arg
.open_flags
= flags
;
1032 p
->o_arg
.fmode
= fmode
& (FMODE_READ
|FMODE_WRITE
);
1033 p
->o_arg
.share_access
= nfs4_map_atomic_open_share(server
,
1035 /* don't put an ACCESS op in OPEN compound if O_EXCL, because ACCESS
1036 * will return permission denied for all bits until close */
1037 if (!(flags
& O_EXCL
)) {
1038 /* ask server to check for all possible rights as results
1040 p
->o_arg
.access
= NFS4_ACCESS_READ
| NFS4_ACCESS_MODIFY
|
1041 NFS4_ACCESS_EXTEND
| NFS4_ACCESS_EXECUTE
;
1043 p
->o_arg
.clientid
= server
->nfs_client
->cl_clientid
;
1044 p
->o_arg
.id
.create_time
= ktime_to_ns(sp
->so_seqid
.create_time
);
1045 p
->o_arg
.id
.uniquifier
= sp
->so_seqid
.owner_id
;
1046 p
->o_arg
.name
= &dentry
->d_name
;
1047 p
->o_arg
.server
= server
;
1048 p
->o_arg
.bitmask
= nfs4_bitmask(server
, label
);
1049 p
->o_arg
.open_bitmap
= &nfs4_fattr_bitmap
[0];
1050 p
->o_arg
.label
= label
;
1051 p
->o_arg
.claim
= nfs4_map_atomic_open_claim(server
, claim
);
1052 switch (p
->o_arg
.claim
) {
1053 case NFS4_OPEN_CLAIM_NULL
:
1054 case NFS4_OPEN_CLAIM_DELEGATE_CUR
:
1055 case NFS4_OPEN_CLAIM_DELEGATE_PREV
:
1056 p
->o_arg
.fh
= NFS_FH(dir
);
1058 case NFS4_OPEN_CLAIM_PREVIOUS
:
1059 case NFS4_OPEN_CLAIM_FH
:
1060 case NFS4_OPEN_CLAIM_DELEG_CUR_FH
:
1061 case NFS4_OPEN_CLAIM_DELEG_PREV_FH
:
1062 p
->o_arg
.fh
= NFS_FH(d_inode(dentry
));
1064 if (attrs
!= NULL
&& attrs
->ia_valid
!= 0) {
1067 p
->o_arg
.u
.attrs
= &p
->attrs
;
1068 memcpy(&p
->attrs
, attrs
, sizeof(p
->attrs
));
1071 verf
[1] = current
->pid
;
1072 memcpy(p
->o_arg
.u
.verifier
.data
, verf
,
1073 sizeof(p
->o_arg
.u
.verifier
.data
));
1075 p
->c_arg
.fh
= &p
->o_res
.fh
;
1076 p
->c_arg
.stateid
= &p
->o_res
.stateid
;
1077 p
->c_arg
.seqid
= p
->o_arg
.seqid
;
1078 nfs4_init_opendata_res(p
);
1079 kref_init(&p
->kref
);
1083 nfs4_label_free(p
->f_label
);
1091 static void nfs4_opendata_free(struct kref
*kref
)
1093 struct nfs4_opendata
*p
= container_of(kref
,
1094 struct nfs4_opendata
, kref
);
1095 struct super_block
*sb
= p
->dentry
->d_sb
;
1097 nfs_free_seqid(p
->o_arg
.seqid
);
1098 if (p
->state
!= NULL
)
1099 nfs4_put_open_state(p
->state
);
1100 nfs4_put_state_owner(p
->owner
);
1102 nfs4_label_free(p
->f_label
);
1106 nfs_sb_deactive(sb
);
1107 nfs_fattr_free_names(&p
->f_attr
);
1108 kfree(p
->f_attr
.mdsthreshold
);
1112 static void nfs4_opendata_put(struct nfs4_opendata
*p
)
1115 kref_put(&p
->kref
, nfs4_opendata_free
);
1118 static int nfs4_wait_for_completion_rpc_task(struct rpc_task
*task
)
1122 ret
= rpc_wait_for_completion_task(task
);
1126 static int can_open_cached(struct nfs4_state
*state
, fmode_t mode
, int open_mode
)
1130 if (open_mode
& (O_EXCL
|O_TRUNC
))
1132 switch (mode
& (FMODE_READ
|FMODE_WRITE
)) {
1134 ret
|= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
) != 0
1135 && state
->n_rdonly
!= 0;
1138 ret
|= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
) != 0
1139 && state
->n_wronly
!= 0;
1141 case FMODE_READ
|FMODE_WRITE
:
1142 ret
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
) != 0
1143 && state
->n_rdwr
!= 0;
1149 static int can_open_delegated(struct nfs_delegation
*delegation
, fmode_t fmode
)
1151 if (delegation
== NULL
)
1153 if ((delegation
->type
& fmode
) != fmode
)
1155 if (test_bit(NFS_DELEGATION_RETURNING
, &delegation
->flags
))
1157 nfs_mark_delegation_referenced(delegation
);
1161 static void update_open_stateflags(struct nfs4_state
*state
, fmode_t fmode
)
1170 case FMODE_READ
|FMODE_WRITE
:
1173 nfs4_state_set_mode_locked(state
, state
->state
| fmode
);
1176 static void nfs_test_and_clear_all_open_stateid(struct nfs4_state
*state
)
1178 struct nfs_client
*clp
= state
->owner
->so_server
->nfs_client
;
1179 bool need_recover
= false;
1181 if (test_and_clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
) && state
->n_rdonly
)
1182 need_recover
= true;
1183 if (test_and_clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
) && state
->n_wronly
)
1184 need_recover
= true;
1185 if (test_and_clear_bit(NFS_O_RDWR_STATE
, &state
->flags
) && state
->n_rdwr
)
1186 need_recover
= true;
1188 nfs4_state_mark_reclaim_nograce(clp
, state
);
1191 static bool nfs_need_update_open_stateid(struct nfs4_state
*state
,
1192 nfs4_stateid
*stateid
)
1194 if (test_and_set_bit(NFS_OPEN_STATE
, &state
->flags
) == 0)
1196 if (!nfs4_stateid_match_other(stateid
, &state
->open_stateid
)) {
1197 nfs_test_and_clear_all_open_stateid(state
);
1200 if (nfs4_stateid_is_newer(stateid
, &state
->open_stateid
))
1205 static void nfs_resync_open_stateid_locked(struct nfs4_state
*state
)
1207 if (state
->n_wronly
)
1208 set_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1209 if (state
->n_rdonly
)
1210 set_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1212 set_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1215 static void nfs_clear_open_stateid_locked(struct nfs4_state
*state
,
1216 nfs4_stateid
*stateid
, fmode_t fmode
)
1218 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1219 switch (fmode
& (FMODE_READ
|FMODE_WRITE
)) {
1221 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1224 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1227 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1228 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1229 clear_bit(NFS_OPEN_STATE
, &state
->flags
);
1231 if (stateid
== NULL
)
1233 /* Handle races with OPEN */
1234 if (!nfs4_stateid_match_other(stateid
, &state
->open_stateid
) ||
1235 !nfs4_stateid_is_newer(stateid
, &state
->open_stateid
)) {
1236 nfs_resync_open_stateid_locked(state
);
1239 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1240 nfs4_stateid_copy(&state
->stateid
, stateid
);
1241 nfs4_stateid_copy(&state
->open_stateid
, stateid
);
1244 static void nfs_clear_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*stateid
, fmode_t fmode
)
1246 write_seqlock(&state
->seqlock
);
1247 nfs_clear_open_stateid_locked(state
, stateid
, fmode
);
1248 write_sequnlock(&state
->seqlock
);
1249 if (test_bit(NFS_STATE_RECLAIM_NOGRACE
, &state
->flags
))
1250 nfs4_schedule_state_manager(state
->owner
->so_server
->nfs_client
);
1253 static void nfs_set_open_stateid_locked(struct nfs4_state
*state
, nfs4_stateid
*stateid
, fmode_t fmode
)
1257 set_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1260 set_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1262 case FMODE_READ
|FMODE_WRITE
:
1263 set_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1265 if (!nfs_need_update_open_stateid(state
, stateid
))
1267 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1268 nfs4_stateid_copy(&state
->stateid
, stateid
);
1269 nfs4_stateid_copy(&state
->open_stateid
, stateid
);
1272 static void __update_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*open_stateid
, const nfs4_stateid
*deleg_stateid
, fmode_t fmode
)
1275 * Protect the call to nfs4_state_set_mode_locked and
1276 * serialise the stateid update
1278 write_seqlock(&state
->seqlock
);
1279 if (deleg_stateid
!= NULL
) {
1280 nfs4_stateid_copy(&state
->stateid
, deleg_stateid
);
1281 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1283 if (open_stateid
!= NULL
)
1284 nfs_set_open_stateid_locked(state
, open_stateid
, fmode
);
1285 write_sequnlock(&state
->seqlock
);
1286 spin_lock(&state
->owner
->so_lock
);
1287 update_open_stateflags(state
, fmode
);
1288 spin_unlock(&state
->owner
->so_lock
);
1291 static int update_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*open_stateid
, nfs4_stateid
*delegation
, fmode_t fmode
)
1293 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1294 struct nfs_delegation
*deleg_cur
;
1297 fmode
&= (FMODE_READ
|FMODE_WRITE
);
1300 deleg_cur
= rcu_dereference(nfsi
->delegation
);
1301 if (deleg_cur
== NULL
)
1304 spin_lock(&deleg_cur
->lock
);
1305 if (rcu_dereference(nfsi
->delegation
) != deleg_cur
||
1306 test_bit(NFS_DELEGATION_RETURNING
, &deleg_cur
->flags
) ||
1307 (deleg_cur
->type
& fmode
) != fmode
)
1308 goto no_delegation_unlock
;
1310 if (delegation
== NULL
)
1311 delegation
= &deleg_cur
->stateid
;
1312 else if (!nfs4_stateid_match(&deleg_cur
->stateid
, delegation
))
1313 goto no_delegation_unlock
;
1315 nfs_mark_delegation_referenced(deleg_cur
);
1316 __update_open_stateid(state
, open_stateid
, &deleg_cur
->stateid
, fmode
);
1318 no_delegation_unlock
:
1319 spin_unlock(&deleg_cur
->lock
);
1323 if (!ret
&& open_stateid
!= NULL
) {
1324 __update_open_stateid(state
, open_stateid
, NULL
, fmode
);
1327 if (test_bit(NFS_STATE_RECLAIM_NOGRACE
, &state
->flags
))
1328 nfs4_schedule_state_manager(state
->owner
->so_server
->nfs_client
);
1333 static bool nfs4_update_lock_stateid(struct nfs4_lock_state
*lsp
,
1334 const nfs4_stateid
*stateid
)
1336 struct nfs4_state
*state
= lsp
->ls_state
;
1339 spin_lock(&state
->state_lock
);
1340 if (!nfs4_stateid_match_other(stateid
, &lsp
->ls_stateid
))
1342 if (!nfs4_stateid_is_newer(stateid
, &lsp
->ls_stateid
))
1344 nfs4_stateid_copy(&lsp
->ls_stateid
, stateid
);
1347 spin_unlock(&state
->state_lock
);
1351 static void nfs4_return_incompatible_delegation(struct inode
*inode
, fmode_t fmode
)
1353 struct nfs_delegation
*delegation
;
1356 delegation
= rcu_dereference(NFS_I(inode
)->delegation
);
1357 if (delegation
== NULL
|| (delegation
->type
& fmode
) == fmode
) {
1362 nfs4_inode_return_delegation(inode
);
1365 static struct nfs4_state
*nfs4_try_open_cached(struct nfs4_opendata
*opendata
)
1367 struct nfs4_state
*state
= opendata
->state
;
1368 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1369 struct nfs_delegation
*delegation
;
1370 int open_mode
= opendata
->o_arg
.open_flags
;
1371 fmode_t fmode
= opendata
->o_arg
.fmode
;
1372 nfs4_stateid stateid
;
1376 spin_lock(&state
->owner
->so_lock
);
1377 if (can_open_cached(state
, fmode
, open_mode
)) {
1378 update_open_stateflags(state
, fmode
);
1379 spin_unlock(&state
->owner
->so_lock
);
1380 goto out_return_state
;
1382 spin_unlock(&state
->owner
->so_lock
);
1384 delegation
= rcu_dereference(nfsi
->delegation
);
1385 if (!can_open_delegated(delegation
, fmode
)) {
1389 /* Save the delegation */
1390 nfs4_stateid_copy(&stateid
, &delegation
->stateid
);
1392 nfs_release_seqid(opendata
->o_arg
.seqid
);
1393 if (!opendata
->is_recover
) {
1394 ret
= nfs_may_open(state
->inode
, state
->owner
->so_cred
, open_mode
);
1400 /* Try to update the stateid using the delegation */
1401 if (update_open_stateid(state
, NULL
, &stateid
, fmode
))
1402 goto out_return_state
;
1405 return ERR_PTR(ret
);
1407 atomic_inc(&state
->count
);
1412 nfs4_opendata_check_deleg(struct nfs4_opendata
*data
, struct nfs4_state
*state
)
1414 struct nfs_client
*clp
= NFS_SERVER(state
->inode
)->nfs_client
;
1415 struct nfs_delegation
*delegation
;
1416 int delegation_flags
= 0;
1419 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
1421 delegation_flags
= delegation
->flags
;
1423 if (data
->o_arg
.claim
== NFS4_OPEN_CLAIM_DELEGATE_CUR
) {
1424 pr_err_ratelimited("NFS: Broken NFSv4 server %s is "
1425 "returning a delegation for "
1426 "OPEN(CLAIM_DELEGATE_CUR)\n",
1428 } else if ((delegation_flags
& 1UL<<NFS_DELEGATION_NEED_RECLAIM
) == 0)
1429 nfs_inode_set_delegation(state
->inode
,
1430 data
->owner
->so_cred
,
1433 nfs_inode_reclaim_delegation(state
->inode
,
1434 data
->owner
->so_cred
,
1439 * Check the inode attributes against the CLAIM_PREVIOUS returned attributes
1440 * and update the nfs4_state.
1442 static struct nfs4_state
*
1443 _nfs4_opendata_reclaim_to_nfs4_state(struct nfs4_opendata
*data
)
1445 struct inode
*inode
= data
->state
->inode
;
1446 struct nfs4_state
*state
= data
->state
;
1449 if (!data
->rpc_done
) {
1450 if (data
->rpc_status
) {
1451 ret
= data
->rpc_status
;
1454 /* cached opens have already been processed */
1458 ret
= nfs_refresh_inode(inode
, &data
->f_attr
);
1462 if (data
->o_res
.delegation_type
!= 0)
1463 nfs4_opendata_check_deleg(data
, state
);
1465 update_open_stateid(state
, &data
->o_res
.stateid
, NULL
,
1467 atomic_inc(&state
->count
);
1471 return ERR_PTR(ret
);
1475 static struct nfs4_state
*
1476 _nfs4_opendata_to_nfs4_state(struct nfs4_opendata
*data
)
1478 struct inode
*inode
;
1479 struct nfs4_state
*state
= NULL
;
1482 if (!data
->rpc_done
) {
1483 state
= nfs4_try_open_cached(data
);
1488 if (!(data
->f_attr
.valid
& NFS_ATTR_FATTR
))
1490 inode
= nfs_fhget(data
->dir
->d_sb
, &data
->o_res
.fh
, &data
->f_attr
, data
->f_label
);
1491 ret
= PTR_ERR(inode
);
1495 state
= nfs4_get_open_state(inode
, data
->owner
);
1498 if (data
->o_res
.delegation_type
!= 0)
1499 nfs4_opendata_check_deleg(data
, state
);
1500 update_open_stateid(state
, &data
->o_res
.stateid
, NULL
,
1504 nfs_release_seqid(data
->o_arg
.seqid
);
1509 return ERR_PTR(ret
);
1512 static struct nfs4_state
*
1513 nfs4_opendata_to_nfs4_state(struct nfs4_opendata
*data
)
1515 if (data
->o_arg
.claim
== NFS4_OPEN_CLAIM_PREVIOUS
)
1516 return _nfs4_opendata_reclaim_to_nfs4_state(data
);
1517 return _nfs4_opendata_to_nfs4_state(data
);
1520 static struct nfs_open_context
*nfs4_state_find_open_context(struct nfs4_state
*state
)
1522 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1523 struct nfs_open_context
*ctx
;
1525 spin_lock(&state
->inode
->i_lock
);
1526 list_for_each_entry(ctx
, &nfsi
->open_files
, list
) {
1527 if (ctx
->state
!= state
)
1529 get_nfs_open_context(ctx
);
1530 spin_unlock(&state
->inode
->i_lock
);
1533 spin_unlock(&state
->inode
->i_lock
);
1534 return ERR_PTR(-ENOENT
);
1537 static struct nfs4_opendata
*nfs4_open_recoverdata_alloc(struct nfs_open_context
*ctx
,
1538 struct nfs4_state
*state
, enum open_claim_type4 claim
)
1540 struct nfs4_opendata
*opendata
;
1542 opendata
= nfs4_opendata_alloc(ctx
->dentry
, state
->owner
, 0, 0,
1543 NULL
, NULL
, claim
, GFP_NOFS
);
1544 if (opendata
== NULL
)
1545 return ERR_PTR(-ENOMEM
);
1546 opendata
->state
= state
;
1547 atomic_inc(&state
->count
);
1551 static int nfs4_open_recover_helper(struct nfs4_opendata
*opendata
, fmode_t fmode
, struct nfs4_state
**res
)
1553 struct nfs4_state
*newstate
;
1556 opendata
->o_arg
.open_flags
= 0;
1557 opendata
->o_arg
.fmode
= fmode
;
1558 opendata
->o_arg
.share_access
= nfs4_map_atomic_open_share(
1559 NFS_SB(opendata
->dentry
->d_sb
),
1561 memset(&opendata
->o_res
, 0, sizeof(opendata
->o_res
));
1562 memset(&opendata
->c_res
, 0, sizeof(opendata
->c_res
));
1563 nfs4_init_opendata_res(opendata
);
1564 ret
= _nfs4_recover_proc_open(opendata
);
1567 newstate
= nfs4_opendata_to_nfs4_state(opendata
);
1568 if (IS_ERR(newstate
))
1569 return PTR_ERR(newstate
);
1570 nfs4_close_state(newstate
, fmode
);
1575 static int nfs4_open_recover(struct nfs4_opendata
*opendata
, struct nfs4_state
*state
)
1577 struct nfs4_state
*newstate
;
1580 /* Don't trigger recovery in nfs_test_and_clear_all_open_stateid */
1581 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1582 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1583 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1584 /* memory barrier prior to reading state->n_* */
1585 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1586 clear_bit(NFS_OPEN_STATE
, &state
->flags
);
1588 if (state
->n_rdwr
!= 0) {
1589 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
|FMODE_WRITE
, &newstate
);
1592 if (newstate
!= state
)
1595 if (state
->n_wronly
!= 0) {
1596 ret
= nfs4_open_recover_helper(opendata
, FMODE_WRITE
, &newstate
);
1599 if (newstate
!= state
)
1602 if (state
->n_rdonly
!= 0) {
1603 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
, &newstate
);
1606 if (newstate
!= state
)
1610 * We may have performed cached opens for all three recoveries.
1611 * Check if we need to update the current stateid.
1613 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0 &&
1614 !nfs4_stateid_match(&state
->stateid
, &state
->open_stateid
)) {
1615 write_seqlock(&state
->seqlock
);
1616 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1617 nfs4_stateid_copy(&state
->stateid
, &state
->open_stateid
);
1618 write_sequnlock(&state
->seqlock
);
1625 * reclaim state on the server after a reboot.
1627 static int _nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1629 struct nfs_delegation
*delegation
;
1630 struct nfs4_opendata
*opendata
;
1631 fmode_t delegation_type
= 0;
1634 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
,
1635 NFS4_OPEN_CLAIM_PREVIOUS
);
1636 if (IS_ERR(opendata
))
1637 return PTR_ERR(opendata
);
1639 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
1640 if (delegation
!= NULL
&& test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
) != 0)
1641 delegation_type
= delegation
->type
;
1643 opendata
->o_arg
.u
.delegation_type
= delegation_type
;
1644 status
= nfs4_open_recover(opendata
, state
);
1645 nfs4_opendata_put(opendata
);
1649 static int nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1651 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1652 struct nfs4_exception exception
= { };
1655 err
= _nfs4_do_open_reclaim(ctx
, state
);
1656 trace_nfs4_open_reclaim(ctx
, 0, err
);
1657 if (nfs4_clear_cap_atomic_open_v1(server
, err
, &exception
))
1659 if (err
!= -NFS4ERR_DELAY
)
1661 nfs4_handle_exception(server
, err
, &exception
);
1662 } while (exception
.retry
);
1666 static int nfs4_open_reclaim(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1668 struct nfs_open_context
*ctx
;
1671 ctx
= nfs4_state_find_open_context(state
);
1674 ret
= nfs4_do_open_reclaim(ctx
, state
);
1675 put_nfs_open_context(ctx
);
1679 static int nfs4_handle_delegation_recall_error(struct nfs_server
*server
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
, int err
)
1683 printk(KERN_ERR
"NFS: %s: unhandled error "
1684 "%d.\n", __func__
, err
);
1689 case -NFS4ERR_BADSESSION
:
1690 case -NFS4ERR_BADSLOT
:
1691 case -NFS4ERR_BAD_HIGH_SLOT
:
1692 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
1693 case -NFS4ERR_DEADSESSION
:
1694 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1695 nfs4_schedule_session_recovery(server
->nfs_client
->cl_session
, err
);
1697 case -NFS4ERR_STALE_CLIENTID
:
1698 case -NFS4ERR_STALE_STATEID
:
1699 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1700 case -NFS4ERR_EXPIRED
:
1701 /* Don't recall a delegation if it was lost */
1702 nfs4_schedule_lease_recovery(server
->nfs_client
);
1704 case -NFS4ERR_MOVED
:
1705 nfs4_schedule_migration_recovery(server
);
1707 case -NFS4ERR_LEASE_MOVED
:
1708 nfs4_schedule_lease_moved_recovery(server
->nfs_client
);
1710 case -NFS4ERR_DELEG_REVOKED
:
1711 case -NFS4ERR_ADMIN_REVOKED
:
1712 case -NFS4ERR_BAD_STATEID
:
1713 case -NFS4ERR_OPENMODE
:
1714 nfs_inode_find_state_and_recover(state
->inode
,
1716 nfs4_schedule_stateid_recovery(server
, state
);
1718 case -NFS4ERR_DELAY
:
1719 case -NFS4ERR_GRACE
:
1720 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1724 case -NFS4ERR_DENIED
:
1725 /* kill_proc(fl->fl_pid, SIGLOST, 1); */
1731 int nfs4_open_delegation_recall(struct nfs_open_context
*ctx
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
1733 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1734 struct nfs4_opendata
*opendata
;
1737 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
,
1738 NFS4_OPEN_CLAIM_DELEG_CUR_FH
);
1739 if (IS_ERR(opendata
))
1740 return PTR_ERR(opendata
);
1741 nfs4_stateid_copy(&opendata
->o_arg
.u
.delegation
, stateid
);
1742 err
= nfs4_open_recover(opendata
, state
);
1743 nfs4_opendata_put(opendata
);
1744 return nfs4_handle_delegation_recall_error(server
, state
, stateid
, err
);
1747 static void nfs4_open_confirm_prepare(struct rpc_task
*task
, void *calldata
)
1749 struct nfs4_opendata
*data
= calldata
;
1751 nfs40_setup_sequence(data
->o_arg
.server
->nfs_client
->cl_slot_tbl
,
1752 &data
->c_arg
.seq_args
, &data
->c_res
.seq_res
, task
);
1755 static void nfs4_open_confirm_done(struct rpc_task
*task
, void *calldata
)
1757 struct nfs4_opendata
*data
= calldata
;
1759 nfs40_sequence_done(task
, &data
->c_res
.seq_res
);
1761 data
->rpc_status
= task
->tk_status
;
1762 if (data
->rpc_status
== 0) {
1763 nfs4_stateid_copy(&data
->o_res
.stateid
, &data
->c_res
.stateid
);
1764 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
1765 renew_lease(data
->o_res
.server
, data
->timestamp
);
1770 static void nfs4_open_confirm_release(void *calldata
)
1772 struct nfs4_opendata
*data
= calldata
;
1773 struct nfs4_state
*state
= NULL
;
1775 /* If this request hasn't been cancelled, do nothing */
1776 if (data
->cancelled
== 0)
1778 /* In case of error, no cleanup! */
1779 if (!data
->rpc_done
)
1781 state
= nfs4_opendata_to_nfs4_state(data
);
1783 nfs4_close_state(state
, data
->o_arg
.fmode
);
1785 nfs4_opendata_put(data
);
1788 static const struct rpc_call_ops nfs4_open_confirm_ops
= {
1789 .rpc_call_prepare
= nfs4_open_confirm_prepare
,
1790 .rpc_call_done
= nfs4_open_confirm_done
,
1791 .rpc_release
= nfs4_open_confirm_release
,
1795 * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata
1797 static int _nfs4_proc_open_confirm(struct nfs4_opendata
*data
)
1799 struct nfs_server
*server
= NFS_SERVER(d_inode(data
->dir
));
1800 struct rpc_task
*task
;
1801 struct rpc_message msg
= {
1802 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_CONFIRM
],
1803 .rpc_argp
= &data
->c_arg
,
1804 .rpc_resp
= &data
->c_res
,
1805 .rpc_cred
= data
->owner
->so_cred
,
1807 struct rpc_task_setup task_setup_data
= {
1808 .rpc_client
= server
->client
,
1809 .rpc_message
= &msg
,
1810 .callback_ops
= &nfs4_open_confirm_ops
,
1811 .callback_data
= data
,
1812 .workqueue
= nfsiod_workqueue
,
1813 .flags
= RPC_TASK_ASYNC
,
1817 nfs4_init_sequence(&data
->c_arg
.seq_args
, &data
->c_res
.seq_res
, 1);
1818 kref_get(&data
->kref
);
1820 data
->rpc_status
= 0;
1821 data
->timestamp
= jiffies
;
1822 task
= rpc_run_task(&task_setup_data
);
1824 return PTR_ERR(task
);
1825 status
= nfs4_wait_for_completion_rpc_task(task
);
1827 data
->cancelled
= 1;
1830 status
= data
->rpc_status
;
1835 static void nfs4_open_prepare(struct rpc_task
*task
, void *calldata
)
1837 struct nfs4_opendata
*data
= calldata
;
1838 struct nfs4_state_owner
*sp
= data
->owner
;
1839 struct nfs_client
*clp
= sp
->so_server
->nfs_client
;
1841 if (nfs_wait_on_sequence(data
->o_arg
.seqid
, task
) != 0)
1844 * Check if we still need to send an OPEN call, or if we can use
1845 * a delegation instead.
1847 if (data
->state
!= NULL
) {
1848 struct nfs_delegation
*delegation
;
1850 if (can_open_cached(data
->state
, data
->o_arg
.fmode
, data
->o_arg
.open_flags
))
1853 delegation
= rcu_dereference(NFS_I(data
->state
->inode
)->delegation
);
1854 if (data
->o_arg
.claim
!= NFS4_OPEN_CLAIM_DELEGATE_CUR
&&
1855 data
->o_arg
.claim
!= NFS4_OPEN_CLAIM_DELEG_CUR_FH
&&
1856 can_open_delegated(delegation
, data
->o_arg
.fmode
))
1857 goto unlock_no_action
;
1860 /* Update client id. */
1861 data
->o_arg
.clientid
= clp
->cl_clientid
;
1862 switch (data
->o_arg
.claim
) {
1863 case NFS4_OPEN_CLAIM_PREVIOUS
:
1864 case NFS4_OPEN_CLAIM_DELEG_CUR_FH
:
1865 case NFS4_OPEN_CLAIM_DELEG_PREV_FH
:
1866 data
->o_arg
.open_bitmap
= &nfs4_open_noattr_bitmap
[0];
1867 case NFS4_OPEN_CLAIM_FH
:
1868 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_NOATTR
];
1869 nfs_copy_fh(&data
->o_res
.fh
, data
->o_arg
.fh
);
1871 data
->timestamp
= jiffies
;
1872 if (nfs4_setup_sequence(data
->o_arg
.server
,
1873 &data
->o_arg
.seq_args
,
1874 &data
->o_res
.seq_res
,
1876 nfs_release_seqid(data
->o_arg
.seqid
);
1878 /* Set the create mode (note dependency on the session type) */
1879 data
->o_arg
.createmode
= NFS4_CREATE_UNCHECKED
;
1880 if (data
->o_arg
.open_flags
& O_EXCL
) {
1881 data
->o_arg
.createmode
= NFS4_CREATE_EXCLUSIVE
;
1882 if (nfs4_has_persistent_session(clp
))
1883 data
->o_arg
.createmode
= NFS4_CREATE_GUARDED
;
1884 else if (clp
->cl_mvops
->minor_version
> 0)
1885 data
->o_arg
.createmode
= NFS4_CREATE_EXCLUSIVE4_1
;
1891 task
->tk_action
= NULL
;
1893 nfs4_sequence_done(task
, &data
->o_res
.seq_res
);
1896 static void nfs4_open_done(struct rpc_task
*task
, void *calldata
)
1898 struct nfs4_opendata
*data
= calldata
;
1900 data
->rpc_status
= task
->tk_status
;
1902 if (!nfs4_sequence_done(task
, &data
->o_res
.seq_res
))
1905 if (task
->tk_status
== 0) {
1906 if (data
->o_res
.f_attr
->valid
& NFS_ATTR_FATTR_TYPE
) {
1907 switch (data
->o_res
.f_attr
->mode
& S_IFMT
) {
1911 data
->rpc_status
= -ELOOP
;
1914 data
->rpc_status
= -EISDIR
;
1917 data
->rpc_status
= -ENOTDIR
;
1920 renew_lease(data
->o_res
.server
, data
->timestamp
);
1921 if (!(data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
))
1922 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
1927 static void nfs4_open_release(void *calldata
)
1929 struct nfs4_opendata
*data
= calldata
;
1930 struct nfs4_state
*state
= NULL
;
1932 /* If this request hasn't been cancelled, do nothing */
1933 if (data
->cancelled
== 0)
1935 /* In case of error, no cleanup! */
1936 if (data
->rpc_status
!= 0 || !data
->rpc_done
)
1938 /* In case we need an open_confirm, no cleanup! */
1939 if (data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
)
1941 state
= nfs4_opendata_to_nfs4_state(data
);
1943 nfs4_close_state(state
, data
->o_arg
.fmode
);
1945 nfs4_opendata_put(data
);
1948 static const struct rpc_call_ops nfs4_open_ops
= {
1949 .rpc_call_prepare
= nfs4_open_prepare
,
1950 .rpc_call_done
= nfs4_open_done
,
1951 .rpc_release
= nfs4_open_release
,
1954 static int nfs4_run_open_task(struct nfs4_opendata
*data
, int isrecover
)
1956 struct inode
*dir
= d_inode(data
->dir
);
1957 struct nfs_server
*server
= NFS_SERVER(dir
);
1958 struct nfs_openargs
*o_arg
= &data
->o_arg
;
1959 struct nfs_openres
*o_res
= &data
->o_res
;
1960 struct rpc_task
*task
;
1961 struct rpc_message msg
= {
1962 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN
],
1965 .rpc_cred
= data
->owner
->so_cred
,
1967 struct rpc_task_setup task_setup_data
= {
1968 .rpc_client
= server
->client
,
1969 .rpc_message
= &msg
,
1970 .callback_ops
= &nfs4_open_ops
,
1971 .callback_data
= data
,
1972 .workqueue
= nfsiod_workqueue
,
1973 .flags
= RPC_TASK_ASYNC
,
1977 nfs4_init_sequence(&o_arg
->seq_args
, &o_res
->seq_res
, 1);
1978 kref_get(&data
->kref
);
1980 data
->rpc_status
= 0;
1981 data
->cancelled
= 0;
1982 data
->is_recover
= 0;
1984 nfs4_set_sequence_privileged(&o_arg
->seq_args
);
1985 data
->is_recover
= 1;
1987 task
= rpc_run_task(&task_setup_data
);
1989 return PTR_ERR(task
);
1990 status
= nfs4_wait_for_completion_rpc_task(task
);
1992 data
->cancelled
= 1;
1995 status
= data
->rpc_status
;
2001 static int _nfs4_recover_proc_open(struct nfs4_opendata
*data
)
2003 struct inode
*dir
= d_inode(data
->dir
);
2004 struct nfs_openres
*o_res
= &data
->o_res
;
2007 status
= nfs4_run_open_task(data
, 1);
2008 if (status
!= 0 || !data
->rpc_done
)
2011 nfs_fattr_map_and_free_names(NFS_SERVER(dir
), &data
->f_attr
);
2013 if (o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
2014 status
= _nfs4_proc_open_confirm(data
);
2023 * Additional permission checks in order to distinguish between an
2024 * open for read, and an open for execute. This works around the
2025 * fact that NFSv4 OPEN treats read and execute permissions as being
2027 * Note that in the non-execute case, we want to turn off permission
2028 * checking if we just created a new file (POSIX open() semantics).
2030 static int nfs4_opendata_access(struct rpc_cred
*cred
,
2031 struct nfs4_opendata
*opendata
,
2032 struct nfs4_state
*state
, fmode_t fmode
,
2035 struct nfs_access_entry cache
;
2038 /* access call failed or for some reason the server doesn't
2039 * support any access modes -- defer access call until later */
2040 if (opendata
->o_res
.access_supported
== 0)
2045 * Use openflags to check for exec, because fmode won't
2046 * always have FMODE_EXEC set when file open for exec.
2048 if (openflags
& __FMODE_EXEC
) {
2049 /* ONLY check for exec rights */
2051 } else if ((fmode
& FMODE_READ
) && !opendata
->file_created
)
2055 cache
.jiffies
= jiffies
;
2056 nfs_access_set_mask(&cache
, opendata
->o_res
.access_result
);
2057 nfs_access_add_cache(state
->inode
, &cache
);
2059 if ((mask
& ~cache
.mask
& (MAY_READ
| MAY_EXEC
)) == 0)
2062 /* even though OPEN succeeded, access is denied. Close the file */
2063 nfs4_close_state(state
, fmode
);
2068 * Note: On error, nfs4_proc_open will free the struct nfs4_opendata
2070 static int _nfs4_proc_open(struct nfs4_opendata
*data
)
2072 struct inode
*dir
= d_inode(data
->dir
);
2073 struct nfs_server
*server
= NFS_SERVER(dir
);
2074 struct nfs_openargs
*o_arg
= &data
->o_arg
;
2075 struct nfs_openres
*o_res
= &data
->o_res
;
2078 status
= nfs4_run_open_task(data
, 0);
2079 if (!data
->rpc_done
)
2082 if (status
== -NFS4ERR_BADNAME
&&
2083 !(o_arg
->open_flags
& O_CREAT
))
2088 nfs_fattr_map_and_free_names(server
, &data
->f_attr
);
2090 if (o_arg
->open_flags
& O_CREAT
) {
2091 update_changeattr(dir
, &o_res
->cinfo
);
2092 if (o_arg
->open_flags
& O_EXCL
)
2093 data
->file_created
= 1;
2094 else if (o_res
->cinfo
.before
!= o_res
->cinfo
.after
)
2095 data
->file_created
= 1;
2097 if ((o_res
->rflags
& NFS4_OPEN_RESULT_LOCKTYPE_POSIX
) == 0)
2098 server
->caps
&= ~NFS_CAP_POSIX_LOCK
;
2099 if(o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
2100 status
= _nfs4_proc_open_confirm(data
);
2104 if (!(o_res
->f_attr
->valid
& NFS_ATTR_FATTR
))
2105 nfs4_proc_getattr(server
, &o_res
->fh
, o_res
->f_attr
, o_res
->f_label
);
2109 static int nfs4_recover_expired_lease(struct nfs_server
*server
)
2111 return nfs4_client_recover_expired_lease(server
->nfs_client
);
2116 * reclaim state on the server after a network partition.
2117 * Assumes caller holds the appropriate lock
2119 static int _nfs4_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
2121 struct nfs4_opendata
*opendata
;
2124 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
,
2125 NFS4_OPEN_CLAIM_FH
);
2126 if (IS_ERR(opendata
))
2127 return PTR_ERR(opendata
);
2128 ret
= nfs4_open_recover(opendata
, state
);
2130 d_drop(ctx
->dentry
);
2131 nfs4_opendata_put(opendata
);
2135 static int nfs4_do_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
2137 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2138 struct nfs4_exception exception
= { };
2142 err
= _nfs4_open_expired(ctx
, state
);
2143 trace_nfs4_open_expired(ctx
, 0, err
);
2144 if (nfs4_clear_cap_atomic_open_v1(server
, err
, &exception
))
2149 case -NFS4ERR_GRACE
:
2150 case -NFS4ERR_DELAY
:
2151 nfs4_handle_exception(server
, err
, &exception
);
2154 } while (exception
.retry
);
2159 static int nfs4_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
2161 struct nfs_open_context
*ctx
;
2164 ctx
= nfs4_state_find_open_context(state
);
2167 ret
= nfs4_do_open_expired(ctx
, state
);
2168 put_nfs_open_context(ctx
);
2172 static void nfs_finish_clear_delegation_stateid(struct nfs4_state
*state
)
2174 nfs_remove_bad_delegation(state
->inode
);
2175 write_seqlock(&state
->seqlock
);
2176 nfs4_stateid_copy(&state
->stateid
, &state
->open_stateid
);
2177 write_sequnlock(&state
->seqlock
);
2178 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
2181 static void nfs40_clear_delegation_stateid(struct nfs4_state
*state
)
2183 if (rcu_access_pointer(NFS_I(state
->inode
)->delegation
) != NULL
)
2184 nfs_finish_clear_delegation_stateid(state
);
2187 static int nfs40_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
2189 /* NFSv4.0 doesn't allow for delegation recovery on open expire */
2190 nfs40_clear_delegation_stateid(state
);
2191 return nfs4_open_expired(sp
, state
);
2194 #if defined(CONFIG_NFS_V4_1)
2195 static void nfs41_check_delegation_stateid(struct nfs4_state
*state
)
2197 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2198 nfs4_stateid stateid
;
2199 struct nfs_delegation
*delegation
;
2200 struct rpc_cred
*cred
;
2203 /* Get the delegation credential for use by test/free_stateid */
2205 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
2206 if (delegation
== NULL
) {
2211 nfs4_stateid_copy(&stateid
, &delegation
->stateid
);
2212 cred
= get_rpccred(delegation
->cred
);
2214 status
= nfs41_test_stateid(server
, &stateid
, cred
);
2215 trace_nfs4_test_delegation_stateid(state
, NULL
, status
);
2217 if (status
!= NFS_OK
) {
2218 /* Free the stateid unless the server explicitly
2219 * informs us the stateid is unrecognized. */
2220 if (status
!= -NFS4ERR_BAD_STATEID
)
2221 nfs41_free_stateid(server
, &stateid
, cred
);
2222 nfs_finish_clear_delegation_stateid(state
);
2229 * nfs41_check_open_stateid - possibly free an open stateid
2231 * @state: NFSv4 state for an inode
2233 * Returns NFS_OK if recovery for this stateid is now finished.
2234 * Otherwise a negative NFS4ERR value is returned.
2236 static int nfs41_check_open_stateid(struct nfs4_state
*state
)
2238 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2239 nfs4_stateid
*stateid
= &state
->open_stateid
;
2240 struct rpc_cred
*cred
= state
->owner
->so_cred
;
2243 /* If a state reset has been done, test_stateid is unneeded */
2244 if ((test_bit(NFS_O_RDONLY_STATE
, &state
->flags
) == 0) &&
2245 (test_bit(NFS_O_WRONLY_STATE
, &state
->flags
) == 0) &&
2246 (test_bit(NFS_O_RDWR_STATE
, &state
->flags
) == 0))
2247 return -NFS4ERR_BAD_STATEID
;
2249 status
= nfs41_test_stateid(server
, stateid
, cred
);
2250 trace_nfs4_test_open_stateid(state
, NULL
, status
);
2251 if (status
!= NFS_OK
) {
2252 /* Free the stateid unless the server explicitly
2253 * informs us the stateid is unrecognized. */
2254 if (status
!= -NFS4ERR_BAD_STATEID
)
2255 nfs41_free_stateid(server
, stateid
, cred
);
2257 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
2258 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
2259 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2260 clear_bit(NFS_OPEN_STATE
, &state
->flags
);
2265 static int nfs41_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
2269 nfs41_check_delegation_stateid(state
);
2270 status
= nfs41_check_open_stateid(state
);
2271 if (status
!= NFS_OK
)
2272 status
= nfs4_open_expired(sp
, state
);
2278 * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-*
2279 * fields corresponding to attributes that were used to store the verifier.
2280 * Make sure we clobber those fields in the later setattr call
2282 static inline void nfs4_exclusive_attrset(struct nfs4_opendata
*opendata
, struct iattr
*sattr
)
2284 if ((opendata
->o_res
.attrset
[1] & FATTR4_WORD1_TIME_ACCESS
) &&
2285 !(sattr
->ia_valid
& ATTR_ATIME_SET
))
2286 sattr
->ia_valid
|= ATTR_ATIME
;
2288 if ((opendata
->o_res
.attrset
[1] & FATTR4_WORD1_TIME_MODIFY
) &&
2289 !(sattr
->ia_valid
& ATTR_MTIME_SET
))
2290 sattr
->ia_valid
|= ATTR_MTIME
;
2293 static int _nfs4_open_and_get_state(struct nfs4_opendata
*opendata
,
2296 struct nfs_open_context
*ctx
)
2298 struct nfs4_state_owner
*sp
= opendata
->owner
;
2299 struct nfs_server
*server
= sp
->so_server
;
2300 struct dentry
*dentry
;
2301 struct nfs4_state
*state
;
2305 seq
= raw_seqcount_begin(&sp
->so_reclaim_seqcount
);
2307 ret
= _nfs4_proc_open(opendata
);
2311 state
= nfs4_opendata_to_nfs4_state(opendata
);
2312 ret
= PTR_ERR(state
);
2315 if (server
->caps
& NFS_CAP_POSIX_LOCK
)
2316 set_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
);
2318 dentry
= opendata
->dentry
;
2319 if (d_really_is_negative(dentry
)) {
2320 /* FIXME: Is this d_drop() ever needed? */
2322 dentry
= d_add_unique(dentry
, igrab(state
->inode
));
2323 if (dentry
== NULL
) {
2324 dentry
= opendata
->dentry
;
2325 } else if (dentry
!= ctx
->dentry
) {
2327 ctx
->dentry
= dget(dentry
);
2329 nfs_set_verifier(dentry
,
2330 nfs_save_change_attribute(d_inode(opendata
->dir
)));
2333 ret
= nfs4_opendata_access(sp
->so_cred
, opendata
, state
, fmode
, flags
);
2338 if (d_inode(dentry
) == state
->inode
) {
2339 nfs_inode_attach_open_context(ctx
);
2340 if (read_seqcount_retry(&sp
->so_reclaim_seqcount
, seq
))
2341 nfs4_schedule_stateid_recovery(server
, state
);
2348 * Returns a referenced nfs4_state
2350 static int _nfs4_do_open(struct inode
*dir
,
2351 struct nfs_open_context
*ctx
,
2353 struct iattr
*sattr
,
2354 struct nfs4_label
*label
,
2357 struct nfs4_state_owner
*sp
;
2358 struct nfs4_state
*state
= NULL
;
2359 struct nfs_server
*server
= NFS_SERVER(dir
);
2360 struct nfs4_opendata
*opendata
;
2361 struct dentry
*dentry
= ctx
->dentry
;
2362 struct rpc_cred
*cred
= ctx
->cred
;
2363 struct nfs4_threshold
**ctx_th
= &ctx
->mdsthreshold
;
2364 fmode_t fmode
= ctx
->mode
& (FMODE_READ
|FMODE_WRITE
|FMODE_EXEC
);
2365 enum open_claim_type4 claim
= NFS4_OPEN_CLAIM_NULL
;
2366 struct nfs4_label
*olabel
= NULL
;
2369 /* Protect against reboot recovery conflicts */
2371 sp
= nfs4_get_state_owner(server
, cred
, GFP_KERNEL
);
2373 dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n");
2376 status
= nfs4_recover_expired_lease(server
);
2378 goto err_put_state_owner
;
2379 if (d_really_is_positive(dentry
))
2380 nfs4_return_incompatible_delegation(d_inode(dentry
), fmode
);
2382 if (d_really_is_positive(dentry
))
2383 claim
= NFS4_OPEN_CLAIM_FH
;
2384 opendata
= nfs4_opendata_alloc(dentry
, sp
, fmode
, flags
, sattr
,
2385 label
, claim
, GFP_KERNEL
);
2386 if (opendata
== NULL
)
2387 goto err_put_state_owner
;
2390 olabel
= nfs4_label_alloc(server
, GFP_KERNEL
);
2391 if (IS_ERR(olabel
)) {
2392 status
= PTR_ERR(olabel
);
2393 goto err_opendata_put
;
2397 if (server
->attr_bitmask
[2] & FATTR4_WORD2_MDSTHRESHOLD
) {
2398 if (!opendata
->f_attr
.mdsthreshold
) {
2399 opendata
->f_attr
.mdsthreshold
= pnfs_mdsthreshold_alloc();
2400 if (!opendata
->f_attr
.mdsthreshold
)
2401 goto err_free_label
;
2403 opendata
->o_arg
.open_bitmap
= &nfs4_pnfs_open_bitmap
[0];
2405 if (d_really_is_positive(dentry
))
2406 opendata
->state
= nfs4_get_open_state(d_inode(dentry
), sp
);
2408 status
= _nfs4_open_and_get_state(opendata
, fmode
, flags
, ctx
);
2410 goto err_free_label
;
2413 if ((opendata
->o_arg
.open_flags
& O_EXCL
) &&
2414 (opendata
->o_arg
.createmode
!= NFS4_CREATE_GUARDED
)) {
2415 nfs4_exclusive_attrset(opendata
, sattr
);
2417 nfs_fattr_init(opendata
->o_res
.f_attr
);
2418 status
= nfs4_do_setattr(state
->inode
, cred
,
2419 opendata
->o_res
.f_attr
, sattr
,
2420 state
, label
, olabel
);
2422 nfs_setattr_update_inode(state
->inode
, sattr
,
2423 opendata
->o_res
.f_attr
);
2424 nfs_setsecurity(state
->inode
, opendata
->o_res
.f_attr
, olabel
);
2427 if (opendata
->file_created
)
2428 *opened
|= FILE_CREATED
;
2430 if (pnfs_use_threshold(ctx_th
, opendata
->f_attr
.mdsthreshold
, server
)) {
2431 *ctx_th
= opendata
->f_attr
.mdsthreshold
;
2432 opendata
->f_attr
.mdsthreshold
= NULL
;
2435 nfs4_label_free(olabel
);
2437 nfs4_opendata_put(opendata
);
2438 nfs4_put_state_owner(sp
);
2441 nfs4_label_free(olabel
);
2443 nfs4_opendata_put(opendata
);
2444 err_put_state_owner
:
2445 nfs4_put_state_owner(sp
);
2451 static struct nfs4_state
*nfs4_do_open(struct inode
*dir
,
2452 struct nfs_open_context
*ctx
,
2454 struct iattr
*sattr
,
2455 struct nfs4_label
*label
,
2458 struct nfs_server
*server
= NFS_SERVER(dir
);
2459 struct nfs4_exception exception
= { };
2460 struct nfs4_state
*res
;
2464 status
= _nfs4_do_open(dir
, ctx
, flags
, sattr
, label
, opened
);
2466 trace_nfs4_open_file(ctx
, flags
, status
);
2469 /* NOTE: BAD_SEQID means the server and client disagree about the
2470 * book-keeping w.r.t. state-changing operations
2471 * (OPEN/CLOSE/LOCK/LOCKU...)
2472 * It is actually a sign of a bug on the client or on the server.
2474 * If we receive a BAD_SEQID error in the particular case of
2475 * doing an OPEN, we assume that nfs_increment_open_seqid() will
2476 * have unhashed the old state_owner for us, and that we can
2477 * therefore safely retry using a new one. We should still warn
2478 * the user though...
2480 if (status
== -NFS4ERR_BAD_SEQID
) {
2481 pr_warn_ratelimited("NFS: v4 server %s "
2482 " returned a bad sequence-id error!\n",
2483 NFS_SERVER(dir
)->nfs_client
->cl_hostname
);
2484 exception
.retry
= 1;
2488 * BAD_STATEID on OPEN means that the server cancelled our
2489 * state before it received the OPEN_CONFIRM.
2490 * Recover by retrying the request as per the discussion
2491 * on Page 181 of RFC3530.
2493 if (status
== -NFS4ERR_BAD_STATEID
) {
2494 exception
.retry
= 1;
2497 if (status
== -EAGAIN
) {
2498 /* We must have found a delegation */
2499 exception
.retry
= 1;
2502 if (nfs4_clear_cap_atomic_open_v1(server
, status
, &exception
))
2504 res
= ERR_PTR(nfs4_handle_exception(server
,
2505 status
, &exception
));
2506 } while (exception
.retry
);
2510 static int _nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
2511 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
2512 struct nfs4_state
*state
, struct nfs4_label
*ilabel
,
2513 struct nfs4_label
*olabel
)
2515 struct nfs_server
*server
= NFS_SERVER(inode
);
2516 struct nfs_setattrargs arg
= {
2517 .fh
= NFS_FH(inode
),
2520 .bitmask
= server
->attr_bitmask
,
2523 struct nfs_setattrres res
= {
2528 struct rpc_message msg
= {
2529 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETATTR
],
2534 unsigned long timestamp
= jiffies
;
2539 arg
.bitmask
= nfs4_bitmask(server
, ilabel
);
2541 arg
.bitmask
= nfs4_bitmask(server
, olabel
);
2543 nfs_fattr_init(fattr
);
2545 /* Servers should only apply open mode checks for file size changes */
2546 truncate
= (sattr
->ia_valid
& ATTR_SIZE
) ? true : false;
2547 fmode
= truncate
? FMODE_WRITE
: FMODE_READ
;
2549 if (nfs4_copy_delegation_stateid(&arg
.stateid
, inode
, fmode
)) {
2550 /* Use that stateid */
2551 } else if (truncate
&& state
!= NULL
) {
2552 struct nfs_lockowner lockowner
= {
2553 .l_owner
= current
->files
,
2554 .l_pid
= current
->tgid
,
2556 if (!nfs4_valid_open_stateid(state
))
2558 if (nfs4_select_rw_stateid(&arg
.stateid
, state
, FMODE_WRITE
,
2559 &lockowner
) == -EIO
)
2562 nfs4_stateid_copy(&arg
.stateid
, &zero_stateid
);
2564 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
2565 if (status
== 0 && state
!= NULL
)
2566 renew_lease(server
, timestamp
);
2570 static int nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
2571 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
2572 struct nfs4_state
*state
, struct nfs4_label
*ilabel
,
2573 struct nfs4_label
*olabel
)
2575 struct nfs_server
*server
= NFS_SERVER(inode
);
2576 struct nfs4_exception exception
= {
2582 err
= _nfs4_do_setattr(inode
, cred
, fattr
, sattr
, state
, ilabel
, olabel
);
2583 trace_nfs4_setattr(inode
, err
);
2585 case -NFS4ERR_OPENMODE
:
2586 if (!(sattr
->ia_valid
& ATTR_SIZE
)) {
2587 pr_warn_once("NFSv4: server %s is incorrectly "
2588 "applying open mode checks to "
2589 "a SETATTR that is not "
2590 "changing file size.\n",
2591 server
->nfs_client
->cl_hostname
);
2593 if (state
&& !(state
->state
& FMODE_WRITE
)) {
2595 if (sattr
->ia_valid
& ATTR_OPEN
)
2600 err
= nfs4_handle_exception(server
, err
, &exception
);
2601 } while (exception
.retry
);
2606 struct nfs4_closedata
{
2607 struct inode
*inode
;
2608 struct nfs4_state
*state
;
2609 struct nfs_closeargs arg
;
2610 struct nfs_closeres res
;
2611 struct nfs_fattr fattr
;
2612 unsigned long timestamp
;
2617 static void nfs4_free_closedata(void *data
)
2619 struct nfs4_closedata
*calldata
= data
;
2620 struct nfs4_state_owner
*sp
= calldata
->state
->owner
;
2621 struct super_block
*sb
= calldata
->state
->inode
->i_sb
;
2624 pnfs_roc_release(calldata
->state
->inode
);
2625 nfs4_put_open_state(calldata
->state
);
2626 nfs_free_seqid(calldata
->arg
.seqid
);
2627 nfs4_put_state_owner(sp
);
2628 nfs_sb_deactive(sb
);
2632 static void nfs4_close_done(struct rpc_task
*task
, void *data
)
2634 struct nfs4_closedata
*calldata
= data
;
2635 struct nfs4_state
*state
= calldata
->state
;
2636 struct nfs_server
*server
= NFS_SERVER(calldata
->inode
);
2637 nfs4_stateid
*res_stateid
= NULL
;
2639 dprintk("%s: begin!\n", __func__
);
2640 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
2642 trace_nfs4_close(state
, &calldata
->arg
, &calldata
->res
, task
->tk_status
);
2643 /* hmm. we are done with the inode, and in the process of freeing
2644 * the state_owner. we keep this around to process errors
2646 switch (task
->tk_status
) {
2648 res_stateid
= &calldata
->res
.stateid
;
2649 if (calldata
->arg
.fmode
== 0 && calldata
->roc
)
2650 pnfs_roc_set_barrier(state
->inode
,
2651 calldata
->roc_barrier
);
2652 renew_lease(server
, calldata
->timestamp
);
2654 case -NFS4ERR_ADMIN_REVOKED
:
2655 case -NFS4ERR_STALE_STATEID
:
2656 case -NFS4ERR_OLD_STATEID
:
2657 case -NFS4ERR_BAD_STATEID
:
2658 case -NFS4ERR_EXPIRED
:
2659 if (!nfs4_stateid_match(&calldata
->arg
.stateid
,
2660 &state
->open_stateid
)) {
2661 rpc_restart_call_prepare(task
);
2664 if (calldata
->arg
.fmode
== 0)
2667 if (nfs4_async_handle_error(task
, server
, state
, NULL
) == -EAGAIN
) {
2668 rpc_restart_call_prepare(task
);
2672 nfs_clear_open_stateid(state
, res_stateid
, calldata
->arg
.fmode
);
2674 nfs_release_seqid(calldata
->arg
.seqid
);
2675 nfs_refresh_inode(calldata
->inode
, calldata
->res
.fattr
);
2676 dprintk("%s: done, ret = %d!\n", __func__
, task
->tk_status
);
2679 static void nfs4_close_prepare(struct rpc_task
*task
, void *data
)
2681 struct nfs4_closedata
*calldata
= data
;
2682 struct nfs4_state
*state
= calldata
->state
;
2683 struct inode
*inode
= calldata
->inode
;
2684 bool is_rdonly
, is_wronly
, is_rdwr
;
2687 dprintk("%s: begin!\n", __func__
);
2688 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
2691 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_DOWNGRADE
];
2692 spin_lock(&state
->owner
->so_lock
);
2693 is_rdwr
= test_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2694 is_rdonly
= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
2695 is_wronly
= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
2696 nfs4_stateid_copy(&calldata
->arg
.stateid
, &state
->open_stateid
);
2697 /* Calculate the change in open mode */
2698 calldata
->arg
.fmode
= 0;
2699 if (state
->n_rdwr
== 0) {
2700 if (state
->n_rdonly
== 0)
2701 call_close
|= is_rdonly
;
2703 calldata
->arg
.fmode
|= FMODE_READ
;
2704 if (state
->n_wronly
== 0)
2705 call_close
|= is_wronly
;
2707 calldata
->arg
.fmode
|= FMODE_WRITE
;
2709 calldata
->arg
.fmode
|= FMODE_READ
|FMODE_WRITE
;
2711 if (calldata
->arg
.fmode
== 0)
2712 call_close
|= is_rdwr
;
2714 if (!nfs4_valid_open_stateid(state
))
2716 spin_unlock(&state
->owner
->so_lock
);
2719 /* Note: exit _without_ calling nfs4_close_done */
2723 if (calldata
->arg
.fmode
== 0) {
2724 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
];
2725 if (calldata
->roc
&&
2726 pnfs_roc_drain(inode
, &calldata
->roc_barrier
, task
)) {
2727 nfs_release_seqid(calldata
->arg
.seqid
);
2731 calldata
->arg
.share_access
=
2732 nfs4_map_atomic_open_share(NFS_SERVER(inode
),
2733 calldata
->arg
.fmode
, 0);
2735 nfs_fattr_init(calldata
->res
.fattr
);
2736 calldata
->timestamp
= jiffies
;
2737 if (nfs4_setup_sequence(NFS_SERVER(inode
),
2738 &calldata
->arg
.seq_args
,
2739 &calldata
->res
.seq_res
,
2741 nfs_release_seqid(calldata
->arg
.seqid
);
2742 dprintk("%s: done!\n", __func__
);
2745 task
->tk_action
= NULL
;
2747 nfs4_sequence_done(task
, &calldata
->res
.seq_res
);
2750 static const struct rpc_call_ops nfs4_close_ops
= {
2751 .rpc_call_prepare
= nfs4_close_prepare
,
2752 .rpc_call_done
= nfs4_close_done
,
2753 .rpc_release
= nfs4_free_closedata
,
2756 static bool nfs4_roc(struct inode
*inode
)
2758 if (!nfs_have_layout(inode
))
2760 return pnfs_roc(inode
);
2764 * It is possible for data to be read/written from a mem-mapped file
2765 * after the sys_close call (which hits the vfs layer as a flush).
2766 * This means that we can't safely call nfsv4 close on a file until
2767 * the inode is cleared. This in turn means that we are not good
2768 * NFSv4 citizens - we do not indicate to the server to update the file's
2769 * share state even when we are done with one of the three share
2770 * stateid's in the inode.
2772 * NOTE: Caller must be holding the sp->so_owner semaphore!
2774 int nfs4_do_close(struct nfs4_state
*state
, gfp_t gfp_mask
, int wait
)
2776 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2777 struct nfs_seqid
*(*alloc_seqid
)(struct nfs_seqid_counter
*, gfp_t
);
2778 struct nfs4_closedata
*calldata
;
2779 struct nfs4_state_owner
*sp
= state
->owner
;
2780 struct rpc_task
*task
;
2781 struct rpc_message msg
= {
2782 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
],
2783 .rpc_cred
= state
->owner
->so_cred
,
2785 struct rpc_task_setup task_setup_data
= {
2786 .rpc_client
= server
->client
,
2787 .rpc_message
= &msg
,
2788 .callback_ops
= &nfs4_close_ops
,
2789 .workqueue
= nfsiod_workqueue
,
2790 .flags
= RPC_TASK_ASYNC
,
2792 int status
= -ENOMEM
;
2794 nfs4_state_protect(server
->nfs_client
, NFS_SP4_MACH_CRED_CLEANUP
,
2795 &task_setup_data
.rpc_client
, &msg
);
2797 calldata
= kzalloc(sizeof(*calldata
), gfp_mask
);
2798 if (calldata
== NULL
)
2800 nfs4_init_sequence(&calldata
->arg
.seq_args
, &calldata
->res
.seq_res
, 1);
2801 calldata
->inode
= state
->inode
;
2802 calldata
->state
= state
;
2803 calldata
->arg
.fh
= NFS_FH(state
->inode
);
2804 /* Serialization for the sequence id */
2805 alloc_seqid
= server
->nfs_client
->cl_mvops
->alloc_seqid
;
2806 calldata
->arg
.seqid
= alloc_seqid(&state
->owner
->so_seqid
, gfp_mask
);
2807 if (IS_ERR(calldata
->arg
.seqid
))
2808 goto out_free_calldata
;
2809 calldata
->arg
.fmode
= 0;
2810 calldata
->arg
.bitmask
= server
->cache_consistency_bitmask
;
2811 calldata
->res
.fattr
= &calldata
->fattr
;
2812 calldata
->res
.seqid
= calldata
->arg
.seqid
;
2813 calldata
->res
.server
= server
;
2814 calldata
->roc
= nfs4_roc(state
->inode
);
2815 nfs_sb_active(calldata
->inode
->i_sb
);
2817 msg
.rpc_argp
= &calldata
->arg
;
2818 msg
.rpc_resp
= &calldata
->res
;
2819 task_setup_data
.callback_data
= calldata
;
2820 task
= rpc_run_task(&task_setup_data
);
2822 return PTR_ERR(task
);
2825 status
= rpc_wait_for_completion_task(task
);
2831 nfs4_put_open_state(state
);
2832 nfs4_put_state_owner(sp
);
2836 static struct inode
*
2837 nfs4_atomic_open(struct inode
*dir
, struct nfs_open_context
*ctx
,
2838 int open_flags
, struct iattr
*attr
, int *opened
)
2840 struct nfs4_state
*state
;
2841 struct nfs4_label l
= {0, 0, 0, NULL
}, *label
= NULL
;
2843 label
= nfs4_label_init_security(dir
, ctx
->dentry
, attr
, &l
);
2845 /* Protect against concurrent sillydeletes */
2846 state
= nfs4_do_open(dir
, ctx
, open_flags
, attr
, label
, opened
);
2848 nfs4_label_release_security(label
);
2851 return ERR_CAST(state
);
2852 return state
->inode
;
2855 static void nfs4_close_context(struct nfs_open_context
*ctx
, int is_sync
)
2857 if (ctx
->state
== NULL
)
2860 nfs4_close_sync(ctx
->state
, ctx
->mode
);
2862 nfs4_close_state(ctx
->state
, ctx
->mode
);
2865 #define FATTR4_WORD1_NFS40_MASK (2*FATTR4_WORD1_MOUNTED_ON_FILEID - 1UL)
2866 #define FATTR4_WORD2_NFS41_MASK (2*FATTR4_WORD2_SUPPATTR_EXCLCREAT - 1UL)
2867 #define FATTR4_WORD2_NFS42_MASK (2*FATTR4_WORD2_SECURITY_LABEL - 1UL)
2869 static int _nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
2871 struct nfs4_server_caps_arg args
= {
2874 struct nfs4_server_caps_res res
= {};
2875 struct rpc_message msg
= {
2876 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SERVER_CAPS
],
2882 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2884 /* Sanity check the server answers */
2885 switch (server
->nfs_client
->cl_minorversion
) {
2887 res
.attr_bitmask
[1] &= FATTR4_WORD1_NFS40_MASK
;
2888 res
.attr_bitmask
[2] = 0;
2891 res
.attr_bitmask
[2] &= FATTR4_WORD2_NFS41_MASK
;
2894 res
.attr_bitmask
[2] &= FATTR4_WORD2_NFS42_MASK
;
2896 memcpy(server
->attr_bitmask
, res
.attr_bitmask
, sizeof(server
->attr_bitmask
));
2897 server
->caps
&= ~(NFS_CAP_ACLS
|NFS_CAP_HARDLINKS
|
2898 NFS_CAP_SYMLINKS
|NFS_CAP_FILEID
|
2899 NFS_CAP_MODE
|NFS_CAP_NLINK
|NFS_CAP_OWNER
|
2900 NFS_CAP_OWNER_GROUP
|NFS_CAP_ATIME
|
2901 NFS_CAP_CTIME
|NFS_CAP_MTIME
|
2902 NFS_CAP_SECURITY_LABEL
);
2903 if (res
.attr_bitmask
[0] & FATTR4_WORD0_ACL
&&
2904 res
.acl_bitmask
& ACL4_SUPPORT_ALLOW_ACL
)
2905 server
->caps
|= NFS_CAP_ACLS
;
2906 if (res
.has_links
!= 0)
2907 server
->caps
|= NFS_CAP_HARDLINKS
;
2908 if (res
.has_symlinks
!= 0)
2909 server
->caps
|= NFS_CAP_SYMLINKS
;
2910 if (res
.attr_bitmask
[0] & FATTR4_WORD0_FILEID
)
2911 server
->caps
|= NFS_CAP_FILEID
;
2912 if (res
.attr_bitmask
[1] & FATTR4_WORD1_MODE
)
2913 server
->caps
|= NFS_CAP_MODE
;
2914 if (res
.attr_bitmask
[1] & FATTR4_WORD1_NUMLINKS
)
2915 server
->caps
|= NFS_CAP_NLINK
;
2916 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER
)
2917 server
->caps
|= NFS_CAP_OWNER
;
2918 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER_GROUP
)
2919 server
->caps
|= NFS_CAP_OWNER_GROUP
;
2920 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_ACCESS
)
2921 server
->caps
|= NFS_CAP_ATIME
;
2922 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_METADATA
)
2923 server
->caps
|= NFS_CAP_CTIME
;
2924 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_MODIFY
)
2925 server
->caps
|= NFS_CAP_MTIME
;
2926 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
2927 if (res
.attr_bitmask
[2] & FATTR4_WORD2_SECURITY_LABEL
)
2928 server
->caps
|= NFS_CAP_SECURITY_LABEL
;
2930 memcpy(server
->attr_bitmask_nl
, res
.attr_bitmask
,
2931 sizeof(server
->attr_bitmask
));
2932 server
->attr_bitmask_nl
[2] &= ~FATTR4_WORD2_SECURITY_LABEL
;
2934 memcpy(server
->cache_consistency_bitmask
, res
.attr_bitmask
, sizeof(server
->cache_consistency_bitmask
));
2935 server
->cache_consistency_bitmask
[0] &= FATTR4_WORD0_CHANGE
|FATTR4_WORD0_SIZE
;
2936 server
->cache_consistency_bitmask
[1] &= FATTR4_WORD1_TIME_METADATA
|FATTR4_WORD1_TIME_MODIFY
;
2937 server
->cache_consistency_bitmask
[2] = 0;
2938 server
->acl_bitmask
= res
.acl_bitmask
;
2939 server
->fh_expire_type
= res
.fh_expire_type
;
2945 int nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
2947 struct nfs4_exception exception
= { };
2950 err
= nfs4_handle_exception(server
,
2951 _nfs4_server_capabilities(server
, fhandle
),
2953 } while (exception
.retry
);
2957 static int _nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2958 struct nfs_fsinfo
*info
)
2961 struct nfs4_lookup_root_arg args
= {
2964 struct nfs4_lookup_res res
= {
2966 .fattr
= info
->fattr
,
2969 struct rpc_message msg
= {
2970 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP_ROOT
],
2975 bitmask
[0] = nfs4_fattr_bitmap
[0];
2976 bitmask
[1] = nfs4_fattr_bitmap
[1];
2978 * Process the label in the upcoming getfattr
2980 bitmask
[2] = nfs4_fattr_bitmap
[2] & ~FATTR4_WORD2_SECURITY_LABEL
;
2982 nfs_fattr_init(info
->fattr
);
2983 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2986 static int nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2987 struct nfs_fsinfo
*info
)
2989 struct nfs4_exception exception
= { };
2992 err
= _nfs4_lookup_root(server
, fhandle
, info
);
2993 trace_nfs4_lookup_root(server
, fhandle
, info
->fattr
, err
);
2996 case -NFS4ERR_WRONGSEC
:
2999 err
= nfs4_handle_exception(server
, err
, &exception
);
3001 } while (exception
.retry
);
3006 static int nfs4_lookup_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3007 struct nfs_fsinfo
*info
, rpc_authflavor_t flavor
)
3009 struct rpc_auth_create_args auth_args
= {
3010 .pseudoflavor
= flavor
,
3012 struct rpc_auth
*auth
;
3015 auth
= rpcauth_create(&auth_args
, server
->client
);
3020 ret
= nfs4_lookup_root(server
, fhandle
, info
);
3026 * Retry pseudoroot lookup with various security flavors. We do this when:
3028 * NFSv4.0: the PUTROOTFH operation returns NFS4ERR_WRONGSEC
3029 * NFSv4.1: the server does not support the SECINFO_NO_NAME operation
3031 * Returns zero on success, or a negative NFS4ERR value, or a
3032 * negative errno value.
3034 static int nfs4_find_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3035 struct nfs_fsinfo
*info
)
3037 /* Per 3530bis 15.33.5 */
3038 static const rpc_authflavor_t flav_array
[] = {
3042 RPC_AUTH_UNIX
, /* courtesy */
3045 int status
= -EPERM
;
3048 if (server
->auth_info
.flavor_len
> 0) {
3049 /* try each flavor specified by user */
3050 for (i
= 0; i
< server
->auth_info
.flavor_len
; i
++) {
3051 status
= nfs4_lookup_root_sec(server
, fhandle
, info
,
3052 server
->auth_info
.flavors
[i
]);
3053 if (status
== -NFS4ERR_WRONGSEC
|| status
== -EACCES
)
3058 /* no flavors specified by user, try default list */
3059 for (i
= 0; i
< ARRAY_SIZE(flav_array
); i
++) {
3060 status
= nfs4_lookup_root_sec(server
, fhandle
, info
,
3062 if (status
== -NFS4ERR_WRONGSEC
|| status
== -EACCES
)
3069 * -EACCESS could mean that the user doesn't have correct permissions
3070 * to access the mount. It could also mean that we tried to mount
3071 * with a gss auth flavor, but rpc.gssd isn't running. Either way,
3072 * existing mount programs don't handle -EACCES very well so it should
3073 * be mapped to -EPERM instead.
3075 if (status
== -EACCES
)
3080 static int nfs4_do_find_root_sec(struct nfs_server
*server
,
3081 struct nfs_fh
*fhandle
, struct nfs_fsinfo
*info
)
3083 int mv
= server
->nfs_client
->cl_minorversion
;
3084 return nfs_v4_minor_ops
[mv
]->find_root_sec(server
, fhandle
, info
);
3088 * nfs4_proc_get_rootfh - get file handle for server's pseudoroot
3089 * @server: initialized nfs_server handle
3090 * @fhandle: we fill in the pseudo-fs root file handle
3091 * @info: we fill in an FSINFO struct
3092 * @auth_probe: probe the auth flavours
3094 * Returns zero on success, or a negative errno.
3096 int nfs4_proc_get_rootfh(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3097 struct nfs_fsinfo
*info
,
3103 status
= nfs4_lookup_root(server
, fhandle
, info
);
3105 if (auth_probe
|| status
== NFS4ERR_WRONGSEC
)
3106 status
= nfs4_do_find_root_sec(server
, fhandle
, info
);
3109 status
= nfs4_server_capabilities(server
, fhandle
);
3111 status
= nfs4_do_fsinfo(server
, fhandle
, info
);
3113 return nfs4_map_errors(status
);
3116 static int nfs4_proc_get_root(struct nfs_server
*server
, struct nfs_fh
*mntfh
,
3117 struct nfs_fsinfo
*info
)
3120 struct nfs_fattr
*fattr
= info
->fattr
;
3121 struct nfs4_label
*label
= NULL
;
3123 error
= nfs4_server_capabilities(server
, mntfh
);
3125 dprintk("nfs4_get_root: getcaps error = %d\n", -error
);
3129 label
= nfs4_label_alloc(server
, GFP_KERNEL
);
3131 return PTR_ERR(label
);
3133 error
= nfs4_proc_getattr(server
, mntfh
, fattr
, label
);
3135 dprintk("nfs4_get_root: getattr error = %d\n", -error
);
3136 goto err_free_label
;
3139 if (fattr
->valid
& NFS_ATTR_FATTR_FSID
&&
3140 !nfs_fsid_equal(&server
->fsid
, &fattr
->fsid
))
3141 memcpy(&server
->fsid
, &fattr
->fsid
, sizeof(server
->fsid
));
3144 nfs4_label_free(label
);
3150 * Get locations and (maybe) other attributes of a referral.
3151 * Note that we'll actually follow the referral later when
3152 * we detect fsid mismatch in inode revalidation
3154 static int nfs4_get_referral(struct rpc_clnt
*client
, struct inode
*dir
,
3155 const struct qstr
*name
, struct nfs_fattr
*fattr
,
3156 struct nfs_fh
*fhandle
)
3158 int status
= -ENOMEM
;
3159 struct page
*page
= NULL
;
3160 struct nfs4_fs_locations
*locations
= NULL
;
3162 page
= alloc_page(GFP_KERNEL
);
3165 locations
= kmalloc(sizeof(struct nfs4_fs_locations
), GFP_KERNEL
);
3166 if (locations
== NULL
)
3169 status
= nfs4_proc_fs_locations(client
, dir
, name
, locations
, page
);
3174 * If the fsid didn't change, this is a migration event, not a
3175 * referral. Cause us to drop into the exception handler, which
3176 * will kick off migration recovery.
3178 if (nfs_fsid_equal(&NFS_SERVER(dir
)->fsid
, &locations
->fattr
.fsid
)) {
3179 dprintk("%s: server did not return a different fsid for"
3180 " a referral at %s\n", __func__
, name
->name
);
3181 status
= -NFS4ERR_MOVED
;
3184 /* Fixup attributes for the nfs_lookup() call to nfs_fhget() */
3185 nfs_fixup_referral_attributes(&locations
->fattr
);
3187 /* replace the lookup nfs_fattr with the locations nfs_fattr */
3188 memcpy(fattr
, &locations
->fattr
, sizeof(struct nfs_fattr
));
3189 memset(fhandle
, 0, sizeof(struct nfs_fh
));
3197 static int _nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3198 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
3200 struct nfs4_getattr_arg args
= {
3202 .bitmask
= server
->attr_bitmask
,
3204 struct nfs4_getattr_res res
= {
3209 struct rpc_message msg
= {
3210 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETATTR
],
3215 args
.bitmask
= nfs4_bitmask(server
, label
);
3217 nfs_fattr_init(fattr
);
3218 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3221 static int nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3222 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
3224 struct nfs4_exception exception
= { };
3227 err
= _nfs4_proc_getattr(server
, fhandle
, fattr
, label
);
3228 trace_nfs4_getattr(server
, fhandle
, fattr
, err
);
3229 err
= nfs4_handle_exception(server
, err
,
3231 } while (exception
.retry
);
3236 * The file is not closed if it is opened due to the a request to change
3237 * the size of the file. The open call will not be needed once the
3238 * VFS layer lookup-intents are implemented.
3240 * Close is called when the inode is destroyed.
3241 * If we haven't opened the file for O_WRONLY, we
3242 * need to in the size_change case to obtain a stateid.
3245 * Because OPEN is always done by name in nfsv4, it is
3246 * possible that we opened a different file by the same
3247 * name. We can recognize this race condition, but we
3248 * can't do anything about it besides returning an error.
3250 * This will be fixed with VFS changes (lookup-intent).
3253 nfs4_proc_setattr(struct dentry
*dentry
, struct nfs_fattr
*fattr
,
3254 struct iattr
*sattr
)
3256 struct inode
*inode
= d_inode(dentry
);
3257 struct rpc_cred
*cred
= NULL
;
3258 struct nfs4_state
*state
= NULL
;
3259 struct nfs4_label
*label
= NULL
;
3262 if (pnfs_ld_layoutret_on_setattr(inode
) &&
3263 sattr
->ia_valid
& ATTR_SIZE
&&
3264 sattr
->ia_size
< i_size_read(inode
))
3265 pnfs_commit_and_return_layout(inode
);
3267 nfs_fattr_init(fattr
);
3269 /* Deal with open(O_TRUNC) */
3270 if (sattr
->ia_valid
& ATTR_OPEN
)
3271 sattr
->ia_valid
&= ~(ATTR_MTIME
|ATTR_CTIME
);
3273 /* Optimization: if the end result is no change, don't RPC */
3274 if ((sattr
->ia_valid
& ~(ATTR_FILE
|ATTR_OPEN
)) == 0)
3277 /* Search for an existing open(O_WRITE) file */
3278 if (sattr
->ia_valid
& ATTR_FILE
) {
3279 struct nfs_open_context
*ctx
;
3281 ctx
= nfs_file_open_context(sattr
->ia_file
);
3288 label
= nfs4_label_alloc(NFS_SERVER(inode
), GFP_KERNEL
);
3290 return PTR_ERR(label
);
3292 status
= nfs4_do_setattr(inode
, cred
, fattr
, sattr
, state
, NULL
, label
);
3294 nfs_setattr_update_inode(inode
, sattr
, fattr
);
3295 nfs_setsecurity(inode
, fattr
, label
);
3297 nfs4_label_free(label
);
3301 static int _nfs4_proc_lookup(struct rpc_clnt
*clnt
, struct inode
*dir
,
3302 const struct qstr
*name
, struct nfs_fh
*fhandle
,
3303 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
3305 struct nfs_server
*server
= NFS_SERVER(dir
);
3307 struct nfs4_lookup_arg args
= {
3308 .bitmask
= server
->attr_bitmask
,
3309 .dir_fh
= NFS_FH(dir
),
3312 struct nfs4_lookup_res res
= {
3318 struct rpc_message msg
= {
3319 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP
],
3324 args
.bitmask
= nfs4_bitmask(server
, label
);
3326 nfs_fattr_init(fattr
);
3328 dprintk("NFS call lookup %s\n", name
->name
);
3329 status
= nfs4_call_sync(clnt
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3330 dprintk("NFS reply lookup: %d\n", status
);
3334 static void nfs_fixup_secinfo_attributes(struct nfs_fattr
*fattr
)
3336 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
3337 NFS_ATTR_FATTR_NLINK
| NFS_ATTR_FATTR_MOUNTPOINT
;
3338 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
3342 static int nfs4_proc_lookup_common(struct rpc_clnt
**clnt
, struct inode
*dir
,
3343 struct qstr
*name
, struct nfs_fh
*fhandle
,
3344 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
3346 struct nfs4_exception exception
= { };
3347 struct rpc_clnt
*client
= *clnt
;
3350 err
= _nfs4_proc_lookup(client
, dir
, name
, fhandle
, fattr
, label
);
3351 trace_nfs4_lookup(dir
, name
, err
);
3353 case -NFS4ERR_BADNAME
:
3356 case -NFS4ERR_MOVED
:
3357 err
= nfs4_get_referral(client
, dir
, name
, fattr
, fhandle
);
3358 if (err
== -NFS4ERR_MOVED
)
3359 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
, &exception
);
3361 case -NFS4ERR_WRONGSEC
:
3363 if (client
!= *clnt
)
3365 client
= nfs4_negotiate_security(client
, dir
, name
);
3367 return PTR_ERR(client
);
3369 exception
.retry
= 1;
3372 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
, &exception
);
3374 } while (exception
.retry
);
3379 else if (client
!= *clnt
)
3380 rpc_shutdown_client(client
);
3385 static int nfs4_proc_lookup(struct inode
*dir
, struct qstr
*name
,
3386 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
,
3387 struct nfs4_label
*label
)
3390 struct rpc_clnt
*client
= NFS_CLIENT(dir
);
3392 status
= nfs4_proc_lookup_common(&client
, dir
, name
, fhandle
, fattr
, label
);
3393 if (client
!= NFS_CLIENT(dir
)) {
3394 rpc_shutdown_client(client
);
3395 nfs_fixup_secinfo_attributes(fattr
);
3401 nfs4_proc_lookup_mountpoint(struct inode
*dir
, struct qstr
*name
,
3402 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
3404 struct rpc_clnt
*client
= NFS_CLIENT(dir
);
3407 status
= nfs4_proc_lookup_common(&client
, dir
, name
, fhandle
, fattr
, NULL
);
3409 return ERR_PTR(status
);
3410 return (client
== NFS_CLIENT(dir
)) ? rpc_clone_client(client
) : client
;
3413 static int _nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
3415 struct nfs_server
*server
= NFS_SERVER(inode
);
3416 struct nfs4_accessargs args
= {
3417 .fh
= NFS_FH(inode
),
3418 .bitmask
= server
->cache_consistency_bitmask
,
3420 struct nfs4_accessres res
= {
3423 struct rpc_message msg
= {
3424 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_ACCESS
],
3427 .rpc_cred
= entry
->cred
,
3429 int mode
= entry
->mask
;
3433 * Determine which access bits we want to ask for...
3435 if (mode
& MAY_READ
)
3436 args
.access
|= NFS4_ACCESS_READ
;
3437 if (S_ISDIR(inode
->i_mode
)) {
3438 if (mode
& MAY_WRITE
)
3439 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
| NFS4_ACCESS_DELETE
;
3440 if (mode
& MAY_EXEC
)
3441 args
.access
|= NFS4_ACCESS_LOOKUP
;
3443 if (mode
& MAY_WRITE
)
3444 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
;
3445 if (mode
& MAY_EXEC
)
3446 args
.access
|= NFS4_ACCESS_EXECUTE
;
3449 res
.fattr
= nfs_alloc_fattr();
3450 if (res
.fattr
== NULL
)
3453 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3455 nfs_access_set_mask(entry
, res
.access
);
3456 nfs_refresh_inode(inode
, res
.fattr
);
3458 nfs_free_fattr(res
.fattr
);
3462 static int nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
3464 struct nfs4_exception exception
= { };
3467 err
= _nfs4_proc_access(inode
, entry
);
3468 trace_nfs4_access(inode
, err
);
3469 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
3471 } while (exception
.retry
);
3476 * TODO: For the time being, we don't try to get any attributes
3477 * along with any of the zero-copy operations READ, READDIR,
3480 * In the case of the first three, we want to put the GETATTR
3481 * after the read-type operation -- this is because it is hard
3482 * to predict the length of a GETATTR response in v4, and thus
3483 * align the READ data correctly. This means that the GETATTR
3484 * may end up partially falling into the page cache, and we should
3485 * shift it into the 'tail' of the xdr_buf before processing.
3486 * To do this efficiently, we need to know the total length
3487 * of data received, which doesn't seem to be available outside
3490 * In the case of WRITE, we also want to put the GETATTR after
3491 * the operation -- in this case because we want to make sure
3492 * we get the post-operation mtime and size.
3494 * Both of these changes to the XDR layer would in fact be quite
3495 * minor, but I decided to leave them for a subsequent patch.
3497 static int _nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
3498 unsigned int pgbase
, unsigned int pglen
)
3500 struct nfs4_readlink args
= {
3501 .fh
= NFS_FH(inode
),
3506 struct nfs4_readlink_res res
;
3507 struct rpc_message msg
= {
3508 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READLINK
],
3513 return nfs4_call_sync(NFS_SERVER(inode
)->client
, NFS_SERVER(inode
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3516 static int nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
3517 unsigned int pgbase
, unsigned int pglen
)
3519 struct nfs4_exception exception
= { };
3522 err
= _nfs4_proc_readlink(inode
, page
, pgbase
, pglen
);
3523 trace_nfs4_readlink(inode
, err
);
3524 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
3526 } while (exception
.retry
);
3531 * This is just for mknod. open(O_CREAT) will always do ->open_context().
3534 nfs4_proc_create(struct inode
*dir
, struct dentry
*dentry
, struct iattr
*sattr
,
3537 struct nfs4_label l
, *ilabel
= NULL
;
3538 struct nfs_open_context
*ctx
;
3539 struct nfs4_state
*state
;
3543 ctx
= alloc_nfs_open_context(dentry
, FMODE_READ
);
3545 return PTR_ERR(ctx
);
3547 ilabel
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
3549 sattr
->ia_mode
&= ~current_umask();
3550 state
= nfs4_do_open(dir
, ctx
, flags
, sattr
, ilabel
, &opened
);
3551 if (IS_ERR(state
)) {
3552 status
= PTR_ERR(state
);
3556 nfs4_label_release_security(ilabel
);
3557 put_nfs_open_context(ctx
);
3561 static int _nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
3563 struct nfs_server
*server
= NFS_SERVER(dir
);
3564 struct nfs_removeargs args
= {
3568 struct nfs_removeres res
= {
3571 struct rpc_message msg
= {
3572 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
],
3578 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 1);
3580 update_changeattr(dir
, &res
.cinfo
);
3584 static int nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
3586 struct nfs4_exception exception
= { };
3589 err
= _nfs4_proc_remove(dir
, name
);
3590 trace_nfs4_remove(dir
, name
, err
);
3591 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
3593 } while (exception
.retry
);
3597 static void nfs4_proc_unlink_setup(struct rpc_message
*msg
, struct inode
*dir
)
3599 struct nfs_server
*server
= NFS_SERVER(dir
);
3600 struct nfs_removeargs
*args
= msg
->rpc_argp
;
3601 struct nfs_removeres
*res
= msg
->rpc_resp
;
3603 res
->server
= server
;
3604 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
];
3605 nfs4_init_sequence(&args
->seq_args
, &res
->seq_res
, 1);
3607 nfs_fattr_init(res
->dir_attr
);
3610 static void nfs4_proc_unlink_rpc_prepare(struct rpc_task
*task
, struct nfs_unlinkdata
*data
)
3612 nfs4_setup_sequence(NFS_SERVER(data
->dir
),
3613 &data
->args
.seq_args
,
3618 static int nfs4_proc_unlink_done(struct rpc_task
*task
, struct inode
*dir
)
3620 struct nfs_unlinkdata
*data
= task
->tk_calldata
;
3621 struct nfs_removeres
*res
= &data
->res
;
3623 if (!nfs4_sequence_done(task
, &res
->seq_res
))
3625 if (nfs4_async_handle_error(task
, res
->server
, NULL
,
3626 &data
->timeout
) == -EAGAIN
)
3628 update_changeattr(dir
, &res
->cinfo
);
3632 static void nfs4_proc_rename_setup(struct rpc_message
*msg
, struct inode
*dir
)
3634 struct nfs_server
*server
= NFS_SERVER(dir
);
3635 struct nfs_renameargs
*arg
= msg
->rpc_argp
;
3636 struct nfs_renameres
*res
= msg
->rpc_resp
;
3638 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENAME
];
3639 res
->server
= server
;
3640 nfs4_init_sequence(&arg
->seq_args
, &res
->seq_res
, 1);
3643 static void nfs4_proc_rename_rpc_prepare(struct rpc_task
*task
, struct nfs_renamedata
*data
)
3645 nfs4_setup_sequence(NFS_SERVER(data
->old_dir
),
3646 &data
->args
.seq_args
,
3651 static int nfs4_proc_rename_done(struct rpc_task
*task
, struct inode
*old_dir
,
3652 struct inode
*new_dir
)
3654 struct nfs_renamedata
*data
= task
->tk_calldata
;
3655 struct nfs_renameres
*res
= &data
->res
;
3657 if (!nfs4_sequence_done(task
, &res
->seq_res
))
3659 if (nfs4_async_handle_error(task
, res
->server
, NULL
, &data
->timeout
) == -EAGAIN
)
3662 update_changeattr(old_dir
, &res
->old_cinfo
);
3663 update_changeattr(new_dir
, &res
->new_cinfo
);
3667 static int _nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
3669 struct nfs_server
*server
= NFS_SERVER(inode
);
3670 struct nfs4_link_arg arg
= {
3671 .fh
= NFS_FH(inode
),
3672 .dir_fh
= NFS_FH(dir
),
3674 .bitmask
= server
->attr_bitmask
,
3676 struct nfs4_link_res res
= {
3680 struct rpc_message msg
= {
3681 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LINK
],
3685 int status
= -ENOMEM
;
3687 res
.fattr
= nfs_alloc_fattr();
3688 if (res
.fattr
== NULL
)
3691 res
.label
= nfs4_label_alloc(server
, GFP_KERNEL
);
3692 if (IS_ERR(res
.label
)) {
3693 status
= PTR_ERR(res
.label
);
3696 arg
.bitmask
= nfs4_bitmask(server
, res
.label
);
3698 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
3700 update_changeattr(dir
, &res
.cinfo
);
3701 status
= nfs_post_op_update_inode(inode
, res
.fattr
);
3703 nfs_setsecurity(inode
, res
.fattr
, res
.label
);
3707 nfs4_label_free(res
.label
);
3710 nfs_free_fattr(res
.fattr
);
3714 static int nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
3716 struct nfs4_exception exception
= { };
3719 err
= nfs4_handle_exception(NFS_SERVER(inode
),
3720 _nfs4_proc_link(inode
, dir
, name
),
3722 } while (exception
.retry
);
3726 struct nfs4_createdata
{
3727 struct rpc_message msg
;
3728 struct nfs4_create_arg arg
;
3729 struct nfs4_create_res res
;
3731 struct nfs_fattr fattr
;
3732 struct nfs4_label
*label
;
3735 static struct nfs4_createdata
*nfs4_alloc_createdata(struct inode
*dir
,
3736 struct qstr
*name
, struct iattr
*sattr
, u32 ftype
)
3738 struct nfs4_createdata
*data
;
3740 data
= kzalloc(sizeof(*data
), GFP_KERNEL
);
3742 struct nfs_server
*server
= NFS_SERVER(dir
);
3744 data
->label
= nfs4_label_alloc(server
, GFP_KERNEL
);
3745 if (IS_ERR(data
->label
))
3748 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE
];
3749 data
->msg
.rpc_argp
= &data
->arg
;
3750 data
->msg
.rpc_resp
= &data
->res
;
3751 data
->arg
.dir_fh
= NFS_FH(dir
);
3752 data
->arg
.server
= server
;
3753 data
->arg
.name
= name
;
3754 data
->arg
.attrs
= sattr
;
3755 data
->arg
.ftype
= ftype
;
3756 data
->arg
.bitmask
= nfs4_bitmask(server
, data
->label
);
3757 data
->res
.server
= server
;
3758 data
->res
.fh
= &data
->fh
;
3759 data
->res
.fattr
= &data
->fattr
;
3760 data
->res
.label
= data
->label
;
3761 nfs_fattr_init(data
->res
.fattr
);
3769 static int nfs4_do_create(struct inode
*dir
, struct dentry
*dentry
, struct nfs4_createdata
*data
)
3771 int status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &data
->msg
,
3772 &data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
3774 update_changeattr(dir
, &data
->res
.dir_cinfo
);
3775 status
= nfs_instantiate(dentry
, data
->res
.fh
, data
->res
.fattr
, data
->res
.label
);
3780 static void nfs4_free_createdata(struct nfs4_createdata
*data
)
3782 nfs4_label_free(data
->label
);
3786 static int _nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
3787 struct page
*page
, unsigned int len
, struct iattr
*sattr
,
3788 struct nfs4_label
*label
)
3790 struct nfs4_createdata
*data
;
3791 int status
= -ENAMETOOLONG
;
3793 if (len
> NFS4_MAXPATHLEN
)
3797 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4LNK
);
3801 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SYMLINK
];
3802 data
->arg
.u
.symlink
.pages
= &page
;
3803 data
->arg
.u
.symlink
.len
= len
;
3804 data
->arg
.label
= label
;
3806 status
= nfs4_do_create(dir
, dentry
, data
);
3808 nfs4_free_createdata(data
);
3813 static int nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
3814 struct page
*page
, unsigned int len
, struct iattr
*sattr
)
3816 struct nfs4_exception exception
= { };
3817 struct nfs4_label l
, *label
= NULL
;
3820 label
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
3823 err
= _nfs4_proc_symlink(dir
, dentry
, page
, len
, sattr
, label
);
3824 trace_nfs4_symlink(dir
, &dentry
->d_name
, err
);
3825 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
3827 } while (exception
.retry
);
3829 nfs4_label_release_security(label
);
3833 static int _nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
3834 struct iattr
*sattr
, struct nfs4_label
*label
)
3836 struct nfs4_createdata
*data
;
3837 int status
= -ENOMEM
;
3839 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4DIR
);
3843 data
->arg
.label
= label
;
3844 status
= nfs4_do_create(dir
, dentry
, data
);
3846 nfs4_free_createdata(data
);
3851 static int nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
3852 struct iattr
*sattr
)
3854 struct nfs4_exception exception
= { };
3855 struct nfs4_label l
, *label
= NULL
;
3858 label
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
3860 sattr
->ia_mode
&= ~current_umask();
3862 err
= _nfs4_proc_mkdir(dir
, dentry
, sattr
, label
);
3863 trace_nfs4_mkdir(dir
, &dentry
->d_name
, err
);
3864 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
3866 } while (exception
.retry
);
3867 nfs4_label_release_security(label
);
3872 static int _nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
3873 u64 cookie
, struct page
**pages
, unsigned int count
, int plus
)
3875 struct inode
*dir
= d_inode(dentry
);
3876 struct nfs4_readdir_arg args
= {
3881 .bitmask
= NFS_SERVER(d_inode(dentry
))->attr_bitmask
,
3884 struct nfs4_readdir_res res
;
3885 struct rpc_message msg
= {
3886 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READDIR
],
3893 dprintk("%s: dentry = %pd2, cookie = %Lu\n", __func__
,
3895 (unsigned long long)cookie
);
3896 nfs4_setup_readdir(cookie
, NFS_I(dir
)->cookieverf
, dentry
, &args
);
3897 res
.pgbase
= args
.pgbase
;
3898 status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3900 memcpy(NFS_I(dir
)->cookieverf
, res
.verifier
.data
, NFS4_VERIFIER_SIZE
);
3901 status
+= args
.pgbase
;
3904 nfs_invalidate_atime(dir
);
3906 dprintk("%s: returns %d\n", __func__
, status
);
3910 static int nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
3911 u64 cookie
, struct page
**pages
, unsigned int count
, int plus
)
3913 struct nfs4_exception exception
= { };
3916 err
= _nfs4_proc_readdir(dentry
, cred
, cookie
,
3917 pages
, count
, plus
);
3918 trace_nfs4_readdir(d_inode(dentry
), err
);
3919 err
= nfs4_handle_exception(NFS_SERVER(d_inode(dentry
)), err
,
3921 } while (exception
.retry
);
3925 static int _nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
3926 struct iattr
*sattr
, struct nfs4_label
*label
, dev_t rdev
)
3928 struct nfs4_createdata
*data
;
3929 int mode
= sattr
->ia_mode
;
3930 int status
= -ENOMEM
;
3932 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4SOCK
);
3937 data
->arg
.ftype
= NF4FIFO
;
3938 else if (S_ISBLK(mode
)) {
3939 data
->arg
.ftype
= NF4BLK
;
3940 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
3941 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
3943 else if (S_ISCHR(mode
)) {
3944 data
->arg
.ftype
= NF4CHR
;
3945 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
3946 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
3947 } else if (!S_ISSOCK(mode
)) {
3952 data
->arg
.label
= label
;
3953 status
= nfs4_do_create(dir
, dentry
, data
);
3955 nfs4_free_createdata(data
);
3960 static int nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
3961 struct iattr
*sattr
, dev_t rdev
)
3963 struct nfs4_exception exception
= { };
3964 struct nfs4_label l
, *label
= NULL
;
3967 label
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
3969 sattr
->ia_mode
&= ~current_umask();
3971 err
= _nfs4_proc_mknod(dir
, dentry
, sattr
, label
, rdev
);
3972 trace_nfs4_mknod(dir
, &dentry
->d_name
, err
);
3973 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
3975 } while (exception
.retry
);
3977 nfs4_label_release_security(label
);
3982 static int _nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3983 struct nfs_fsstat
*fsstat
)
3985 struct nfs4_statfs_arg args
= {
3987 .bitmask
= server
->attr_bitmask
,
3989 struct nfs4_statfs_res res
= {
3992 struct rpc_message msg
= {
3993 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_STATFS
],
3998 nfs_fattr_init(fsstat
->fattr
);
3999 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4002 static int nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsstat
*fsstat
)
4004 struct nfs4_exception exception
= { };
4007 err
= nfs4_handle_exception(server
,
4008 _nfs4_proc_statfs(server
, fhandle
, fsstat
),
4010 } while (exception
.retry
);
4014 static int _nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
4015 struct nfs_fsinfo
*fsinfo
)
4017 struct nfs4_fsinfo_arg args
= {
4019 .bitmask
= server
->attr_bitmask
,
4021 struct nfs4_fsinfo_res res
= {
4024 struct rpc_message msg
= {
4025 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSINFO
],
4030 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4033 static int nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
4035 struct nfs4_exception exception
= { };
4036 unsigned long now
= jiffies
;
4040 err
= _nfs4_do_fsinfo(server
, fhandle
, fsinfo
);
4041 trace_nfs4_fsinfo(server
, fhandle
, fsinfo
->fattr
, err
);
4043 struct nfs_client
*clp
= server
->nfs_client
;
4045 spin_lock(&clp
->cl_lock
);
4046 clp
->cl_lease_time
= fsinfo
->lease_time
* HZ
;
4047 clp
->cl_last_renewal
= now
;
4048 spin_unlock(&clp
->cl_lock
);
4051 err
= nfs4_handle_exception(server
, err
, &exception
);
4052 } while (exception
.retry
);
4056 static int nfs4_proc_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
4060 nfs_fattr_init(fsinfo
->fattr
);
4061 error
= nfs4_do_fsinfo(server
, fhandle
, fsinfo
);
4063 /* block layout checks this! */
4064 server
->pnfs_blksize
= fsinfo
->blksize
;
4065 set_pnfs_layoutdriver(server
, fhandle
, fsinfo
->layouttype
);
4071 static int _nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
4072 struct nfs_pathconf
*pathconf
)
4074 struct nfs4_pathconf_arg args
= {
4076 .bitmask
= server
->attr_bitmask
,
4078 struct nfs4_pathconf_res res
= {
4079 .pathconf
= pathconf
,
4081 struct rpc_message msg
= {
4082 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_PATHCONF
],
4087 /* None of the pathconf attributes are mandatory to implement */
4088 if ((args
.bitmask
[0] & nfs4_pathconf_bitmap
[0]) == 0) {
4089 memset(pathconf
, 0, sizeof(*pathconf
));
4093 nfs_fattr_init(pathconf
->fattr
);
4094 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4097 static int nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
4098 struct nfs_pathconf
*pathconf
)
4100 struct nfs4_exception exception
= { };
4104 err
= nfs4_handle_exception(server
,
4105 _nfs4_proc_pathconf(server
, fhandle
, pathconf
),
4107 } while (exception
.retry
);
4111 int nfs4_set_rw_stateid(nfs4_stateid
*stateid
,
4112 const struct nfs_open_context
*ctx
,
4113 const struct nfs_lock_context
*l_ctx
,
4116 const struct nfs_lockowner
*lockowner
= NULL
;
4119 lockowner
= &l_ctx
->lockowner
;
4120 return nfs4_select_rw_stateid(stateid
, ctx
->state
, fmode
, lockowner
);
4122 EXPORT_SYMBOL_GPL(nfs4_set_rw_stateid
);
4124 static bool nfs4_stateid_is_current(nfs4_stateid
*stateid
,
4125 const struct nfs_open_context
*ctx
,
4126 const struct nfs_lock_context
*l_ctx
,
4129 nfs4_stateid current_stateid
;
4131 /* If the current stateid represents a lost lock, then exit */
4132 if (nfs4_set_rw_stateid(¤t_stateid
, ctx
, l_ctx
, fmode
) == -EIO
)
4134 return nfs4_stateid_match(stateid
, ¤t_stateid
);
4137 static bool nfs4_error_stateid_expired(int err
)
4140 case -NFS4ERR_DELEG_REVOKED
:
4141 case -NFS4ERR_ADMIN_REVOKED
:
4142 case -NFS4ERR_BAD_STATEID
:
4143 case -NFS4ERR_STALE_STATEID
:
4144 case -NFS4ERR_OLD_STATEID
:
4145 case -NFS4ERR_OPENMODE
:
4146 case -NFS4ERR_EXPIRED
:
4152 void __nfs4_read_done_cb(struct nfs_pgio_header
*hdr
)
4154 nfs_invalidate_atime(hdr
->inode
);
4157 static int nfs4_read_done_cb(struct rpc_task
*task
, struct nfs_pgio_header
*hdr
)
4159 struct nfs_server
*server
= NFS_SERVER(hdr
->inode
);
4161 trace_nfs4_read(hdr
, task
->tk_status
);
4162 if (nfs4_async_handle_error(task
, server
,
4163 hdr
->args
.context
->state
,
4165 rpc_restart_call_prepare(task
);
4169 __nfs4_read_done_cb(hdr
);
4170 if (task
->tk_status
> 0)
4171 renew_lease(server
, hdr
->timestamp
);
4175 static bool nfs4_read_stateid_changed(struct rpc_task
*task
,
4176 struct nfs_pgio_args
*args
)
4179 if (!nfs4_error_stateid_expired(task
->tk_status
) ||
4180 nfs4_stateid_is_current(&args
->stateid
,
4185 rpc_restart_call_prepare(task
);
4189 static int nfs4_read_done(struct rpc_task
*task
, struct nfs_pgio_header
*hdr
)
4192 dprintk("--> %s\n", __func__
);
4194 if (!nfs4_sequence_done(task
, &hdr
->res
.seq_res
))
4196 if (nfs4_read_stateid_changed(task
, &hdr
->args
))
4198 return hdr
->pgio_done_cb
? hdr
->pgio_done_cb(task
, hdr
) :
4199 nfs4_read_done_cb(task
, hdr
);
4202 static void nfs4_proc_read_setup(struct nfs_pgio_header
*hdr
,
4203 struct rpc_message
*msg
)
4205 hdr
->timestamp
= jiffies
;
4206 hdr
->pgio_done_cb
= nfs4_read_done_cb
;
4207 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READ
];
4208 nfs4_init_sequence(&hdr
->args
.seq_args
, &hdr
->res
.seq_res
, 0);
4211 static int nfs4_proc_pgio_rpc_prepare(struct rpc_task
*task
,
4212 struct nfs_pgio_header
*hdr
)
4214 if (nfs4_setup_sequence(NFS_SERVER(hdr
->inode
),
4215 &hdr
->args
.seq_args
,
4219 if (nfs4_set_rw_stateid(&hdr
->args
.stateid
, hdr
->args
.context
,
4220 hdr
->args
.lock_context
,
4221 hdr
->rw_ops
->rw_mode
) == -EIO
)
4223 if (unlikely(test_bit(NFS_CONTEXT_BAD
, &hdr
->args
.context
->flags
)))
4228 static int nfs4_write_done_cb(struct rpc_task
*task
,
4229 struct nfs_pgio_header
*hdr
)
4231 struct inode
*inode
= hdr
->inode
;
4233 trace_nfs4_write(hdr
, task
->tk_status
);
4234 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
),
4235 hdr
->args
.context
->state
,
4237 rpc_restart_call_prepare(task
);
4240 if (task
->tk_status
>= 0) {
4241 renew_lease(NFS_SERVER(inode
), hdr
->timestamp
);
4242 nfs_writeback_update_inode(hdr
);
4247 static bool nfs4_write_stateid_changed(struct rpc_task
*task
,
4248 struct nfs_pgio_args
*args
)
4251 if (!nfs4_error_stateid_expired(task
->tk_status
) ||
4252 nfs4_stateid_is_current(&args
->stateid
,
4257 rpc_restart_call_prepare(task
);
4261 static int nfs4_write_done(struct rpc_task
*task
, struct nfs_pgio_header
*hdr
)
4263 if (!nfs4_sequence_done(task
, &hdr
->res
.seq_res
))
4265 if (nfs4_write_stateid_changed(task
, &hdr
->args
))
4267 return hdr
->pgio_done_cb
? hdr
->pgio_done_cb(task
, hdr
) :
4268 nfs4_write_done_cb(task
, hdr
);
4272 bool nfs4_write_need_cache_consistency_data(struct nfs_pgio_header
*hdr
)
4274 /* Don't request attributes for pNFS or O_DIRECT writes */
4275 if (hdr
->ds_clp
!= NULL
|| hdr
->dreq
!= NULL
)
4277 /* Otherwise, request attributes if and only if we don't hold
4280 return nfs4_have_delegation(hdr
->inode
, FMODE_READ
) == 0;
4283 static void nfs4_proc_write_setup(struct nfs_pgio_header
*hdr
,
4284 struct rpc_message
*msg
)
4286 struct nfs_server
*server
= NFS_SERVER(hdr
->inode
);
4288 if (!nfs4_write_need_cache_consistency_data(hdr
)) {
4289 hdr
->args
.bitmask
= NULL
;
4290 hdr
->res
.fattr
= NULL
;
4292 hdr
->args
.bitmask
= server
->cache_consistency_bitmask
;
4294 if (!hdr
->pgio_done_cb
)
4295 hdr
->pgio_done_cb
= nfs4_write_done_cb
;
4296 hdr
->res
.server
= server
;
4297 hdr
->timestamp
= jiffies
;
4299 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_WRITE
];
4300 nfs4_init_sequence(&hdr
->args
.seq_args
, &hdr
->res
.seq_res
, 1);
4303 static void nfs4_proc_commit_rpc_prepare(struct rpc_task
*task
, struct nfs_commit_data
*data
)
4305 nfs4_setup_sequence(NFS_SERVER(data
->inode
),
4306 &data
->args
.seq_args
,
4311 static int nfs4_commit_done_cb(struct rpc_task
*task
, struct nfs_commit_data
*data
)
4313 struct inode
*inode
= data
->inode
;
4315 trace_nfs4_commit(data
, task
->tk_status
);
4316 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
),
4317 NULL
, NULL
) == -EAGAIN
) {
4318 rpc_restart_call_prepare(task
);
4324 static int nfs4_commit_done(struct rpc_task
*task
, struct nfs_commit_data
*data
)
4326 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
4328 return data
->commit_done_cb(task
, data
);
4331 static void nfs4_proc_commit_setup(struct nfs_commit_data
*data
, struct rpc_message
*msg
)
4333 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
4335 if (data
->commit_done_cb
== NULL
)
4336 data
->commit_done_cb
= nfs4_commit_done_cb
;
4337 data
->res
.server
= server
;
4338 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_COMMIT
];
4339 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
4342 struct nfs4_renewdata
{
4343 struct nfs_client
*client
;
4344 unsigned long timestamp
;
4348 * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special
4349 * standalone procedure for queueing an asynchronous RENEW.
4351 static void nfs4_renew_release(void *calldata
)
4353 struct nfs4_renewdata
*data
= calldata
;
4354 struct nfs_client
*clp
= data
->client
;
4356 if (atomic_read(&clp
->cl_count
) > 1)
4357 nfs4_schedule_state_renewal(clp
);
4358 nfs_put_client(clp
);
4362 static void nfs4_renew_done(struct rpc_task
*task
, void *calldata
)
4364 struct nfs4_renewdata
*data
= calldata
;
4365 struct nfs_client
*clp
= data
->client
;
4366 unsigned long timestamp
= data
->timestamp
;
4368 trace_nfs4_renew_async(clp
, task
->tk_status
);
4369 switch (task
->tk_status
) {
4372 case -NFS4ERR_LEASE_MOVED
:
4373 nfs4_schedule_lease_moved_recovery(clp
);
4376 /* Unless we're shutting down, schedule state recovery! */
4377 if (test_bit(NFS_CS_RENEWD
, &clp
->cl_res_state
) == 0)
4379 if (task
->tk_status
!= NFS4ERR_CB_PATH_DOWN
) {
4380 nfs4_schedule_lease_recovery(clp
);
4383 nfs4_schedule_path_down_recovery(clp
);
4385 do_renew_lease(clp
, timestamp
);
4388 static const struct rpc_call_ops nfs4_renew_ops
= {
4389 .rpc_call_done
= nfs4_renew_done
,
4390 .rpc_release
= nfs4_renew_release
,
4393 static int nfs4_proc_async_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
, unsigned renew_flags
)
4395 struct rpc_message msg
= {
4396 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
4400 struct nfs4_renewdata
*data
;
4402 if (renew_flags
== 0)
4404 if (!atomic_inc_not_zero(&clp
->cl_count
))
4406 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
4410 data
->timestamp
= jiffies
;
4411 return rpc_call_async(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
,
4412 &nfs4_renew_ops
, data
);
4415 static int nfs4_proc_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
)
4417 struct rpc_message msg
= {
4418 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
4422 unsigned long now
= jiffies
;
4425 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
4428 do_renew_lease(clp
, now
);
4432 static inline int nfs4_server_supports_acls(struct nfs_server
*server
)
4434 return server
->caps
& NFS_CAP_ACLS
;
4437 /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_SIZE, and that
4438 * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_SIZE) bytes on
4441 #define NFS4ACL_MAXPAGES DIV_ROUND_UP(XATTR_SIZE_MAX, PAGE_SIZE)
4443 static int buf_to_pages_noslab(const void *buf
, size_t buflen
,
4444 struct page
**pages
, unsigned int *pgbase
)
4446 struct page
*newpage
, **spages
;
4452 len
= min_t(size_t, PAGE_SIZE
, buflen
);
4453 newpage
= alloc_page(GFP_KERNEL
);
4455 if (newpage
== NULL
)
4457 memcpy(page_address(newpage
), buf
, len
);
4462 } while (buflen
!= 0);
4468 __free_page(spages
[rc
-1]);
4472 struct nfs4_cached_acl
{
4478 static void nfs4_set_cached_acl(struct inode
*inode
, struct nfs4_cached_acl
*acl
)
4480 struct nfs_inode
*nfsi
= NFS_I(inode
);
4482 spin_lock(&inode
->i_lock
);
4483 kfree(nfsi
->nfs4_acl
);
4484 nfsi
->nfs4_acl
= acl
;
4485 spin_unlock(&inode
->i_lock
);
4488 static void nfs4_zap_acl_attr(struct inode
*inode
)
4490 nfs4_set_cached_acl(inode
, NULL
);
4493 static inline ssize_t
nfs4_read_cached_acl(struct inode
*inode
, char *buf
, size_t buflen
)
4495 struct nfs_inode
*nfsi
= NFS_I(inode
);
4496 struct nfs4_cached_acl
*acl
;
4499 spin_lock(&inode
->i_lock
);
4500 acl
= nfsi
->nfs4_acl
;
4503 if (buf
== NULL
) /* user is just asking for length */
4505 if (acl
->cached
== 0)
4507 ret
= -ERANGE
; /* see getxattr(2) man page */
4508 if (acl
->len
> buflen
)
4510 memcpy(buf
, acl
->data
, acl
->len
);
4514 spin_unlock(&inode
->i_lock
);
4518 static void nfs4_write_cached_acl(struct inode
*inode
, struct page
**pages
, size_t pgbase
, size_t acl_len
)
4520 struct nfs4_cached_acl
*acl
;
4521 size_t buflen
= sizeof(*acl
) + acl_len
;
4523 if (buflen
<= PAGE_SIZE
) {
4524 acl
= kmalloc(buflen
, GFP_KERNEL
);
4528 _copy_from_pages(acl
->data
, pages
, pgbase
, acl_len
);
4530 acl
= kmalloc(sizeof(*acl
), GFP_KERNEL
);
4537 nfs4_set_cached_acl(inode
, acl
);
4541 * The getxattr API returns the required buffer length when called with a
4542 * NULL buf. The NFSv4 acl tool then calls getxattr again after allocating
4543 * the required buf. On a NULL buf, we send a page of data to the server
4544 * guessing that the ACL request can be serviced by a page. If so, we cache
4545 * up to the page of ACL data, and the 2nd call to getxattr is serviced by
4546 * the cache. If not so, we throw away the page, and cache the required
4547 * length. The next getxattr call will then produce another round trip to
4548 * the server, this time with the input buf of the required size.
4550 static ssize_t
__nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
4552 struct page
*pages
[NFS4ACL_MAXPAGES
] = {NULL
, };
4553 struct nfs_getaclargs args
= {
4554 .fh
= NFS_FH(inode
),
4558 struct nfs_getaclres res
= {
4561 struct rpc_message msg
= {
4562 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETACL
],
4566 unsigned int npages
= DIV_ROUND_UP(buflen
, PAGE_SIZE
);
4567 int ret
= -ENOMEM
, i
;
4569 /* As long as we're doing a round trip to the server anyway,
4570 * let's be prepared for a page of acl data. */
4573 if (npages
> ARRAY_SIZE(pages
))
4576 for (i
= 0; i
< npages
; i
++) {
4577 pages
[i
] = alloc_page(GFP_KERNEL
);
4582 /* for decoding across pages */
4583 res
.acl_scratch
= alloc_page(GFP_KERNEL
);
4584 if (!res
.acl_scratch
)
4587 args
.acl_len
= npages
* PAGE_SIZE
;
4588 args
.acl_pgbase
= 0;
4590 dprintk("%s buf %p buflen %zu npages %d args.acl_len %zu\n",
4591 __func__
, buf
, buflen
, npages
, args
.acl_len
);
4592 ret
= nfs4_call_sync(NFS_SERVER(inode
)->client
, NFS_SERVER(inode
),
4593 &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4597 /* Handle the case where the passed-in buffer is too short */
4598 if (res
.acl_flags
& NFS4_ACL_TRUNC
) {
4599 /* Did the user only issue a request for the acl length? */
4605 nfs4_write_cached_acl(inode
, pages
, res
.acl_data_offset
, res
.acl_len
);
4607 if (res
.acl_len
> buflen
) {
4611 _copy_from_pages(buf
, pages
, res
.acl_data_offset
, res
.acl_len
);
4616 for (i
= 0; i
< npages
; i
++)
4618 __free_page(pages
[i
]);
4619 if (res
.acl_scratch
)
4620 __free_page(res
.acl_scratch
);
4624 static ssize_t
nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
4626 struct nfs4_exception exception
= { };
4629 ret
= __nfs4_get_acl_uncached(inode
, buf
, buflen
);
4630 trace_nfs4_get_acl(inode
, ret
);
4633 ret
= nfs4_handle_exception(NFS_SERVER(inode
), ret
, &exception
);
4634 } while (exception
.retry
);
4638 static ssize_t
nfs4_proc_get_acl(struct inode
*inode
, void *buf
, size_t buflen
)
4640 struct nfs_server
*server
= NFS_SERVER(inode
);
4643 if (!nfs4_server_supports_acls(server
))
4645 ret
= nfs_revalidate_inode(server
, inode
);
4648 if (NFS_I(inode
)->cache_validity
& NFS_INO_INVALID_ACL
)
4649 nfs_zap_acl_cache(inode
);
4650 ret
= nfs4_read_cached_acl(inode
, buf
, buflen
);
4652 /* -ENOENT is returned if there is no ACL or if there is an ACL
4653 * but no cached acl data, just the acl length */
4655 return nfs4_get_acl_uncached(inode
, buf
, buflen
);
4658 static int __nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
4660 struct nfs_server
*server
= NFS_SERVER(inode
);
4661 struct page
*pages
[NFS4ACL_MAXPAGES
];
4662 struct nfs_setaclargs arg
= {
4663 .fh
= NFS_FH(inode
),
4667 struct nfs_setaclres res
;
4668 struct rpc_message msg
= {
4669 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETACL
],
4673 unsigned int npages
= DIV_ROUND_UP(buflen
, PAGE_SIZE
);
4676 if (!nfs4_server_supports_acls(server
))
4678 if (npages
> ARRAY_SIZE(pages
))
4680 i
= buf_to_pages_noslab(buf
, buflen
, arg
.acl_pages
, &arg
.acl_pgbase
);
4683 nfs4_inode_return_delegation(inode
);
4684 ret
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
4687 * Free each page after tx, so the only ref left is
4688 * held by the network stack
4691 put_page(pages
[i
-1]);
4694 * Acl update can result in inode attribute update.
4695 * so mark the attribute cache invalid.
4697 spin_lock(&inode
->i_lock
);
4698 NFS_I(inode
)->cache_validity
|= NFS_INO_INVALID_ATTR
;
4699 spin_unlock(&inode
->i_lock
);
4700 nfs_access_zap_cache(inode
);
4701 nfs_zap_acl_cache(inode
);
4705 static int nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
4707 struct nfs4_exception exception
= { };
4710 err
= __nfs4_proc_set_acl(inode
, buf
, buflen
);
4711 trace_nfs4_set_acl(inode
, err
);
4712 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
4714 } while (exception
.retry
);
4718 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
4719 static int _nfs4_get_security_label(struct inode
*inode
, void *buf
,
4722 struct nfs_server
*server
= NFS_SERVER(inode
);
4723 struct nfs_fattr fattr
;
4724 struct nfs4_label label
= {0, 0, buflen
, buf
};
4726 u32 bitmask
[3] = { 0, 0, FATTR4_WORD2_SECURITY_LABEL
};
4727 struct nfs4_getattr_arg arg
= {
4728 .fh
= NFS_FH(inode
),
4731 struct nfs4_getattr_res res
= {
4736 struct rpc_message msg
= {
4737 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETATTR
],
4743 nfs_fattr_init(&fattr
);
4745 ret
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 0);
4748 if (!(fattr
.valid
& NFS_ATTR_FATTR_V4_SECURITY_LABEL
))
4750 if (buflen
< label
.len
)
4755 static int nfs4_get_security_label(struct inode
*inode
, void *buf
,
4758 struct nfs4_exception exception
= { };
4761 if (!nfs_server_capable(inode
, NFS_CAP_SECURITY_LABEL
))
4765 err
= _nfs4_get_security_label(inode
, buf
, buflen
);
4766 trace_nfs4_get_security_label(inode
, err
);
4767 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
4769 } while (exception
.retry
);
4773 static int _nfs4_do_set_security_label(struct inode
*inode
,
4774 struct nfs4_label
*ilabel
,
4775 struct nfs_fattr
*fattr
,
4776 struct nfs4_label
*olabel
)
4779 struct iattr sattr
= {0};
4780 struct nfs_server
*server
= NFS_SERVER(inode
);
4781 const u32 bitmask
[3] = { 0, 0, FATTR4_WORD2_SECURITY_LABEL
};
4782 struct nfs_setattrargs arg
= {
4783 .fh
= NFS_FH(inode
),
4789 struct nfs_setattrres res
= {
4794 struct rpc_message msg
= {
4795 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETATTR
],
4801 nfs4_stateid_copy(&arg
.stateid
, &zero_stateid
);
4803 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
4805 dprintk("%s failed: %d\n", __func__
, status
);
4810 static int nfs4_do_set_security_label(struct inode
*inode
,
4811 struct nfs4_label
*ilabel
,
4812 struct nfs_fattr
*fattr
,
4813 struct nfs4_label
*olabel
)
4815 struct nfs4_exception exception
= { };
4819 err
= _nfs4_do_set_security_label(inode
, ilabel
,
4821 trace_nfs4_set_security_label(inode
, err
);
4822 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
4824 } while (exception
.retry
);
4829 nfs4_set_security_label(struct dentry
*dentry
, const void *buf
, size_t buflen
)
4831 struct nfs4_label ilabel
, *olabel
= NULL
;
4832 struct nfs_fattr fattr
;
4833 struct rpc_cred
*cred
;
4834 struct inode
*inode
= d_inode(dentry
);
4837 if (!nfs_server_capable(inode
, NFS_CAP_SECURITY_LABEL
))
4840 nfs_fattr_init(&fattr
);
4844 ilabel
.label
= (char *)buf
;
4845 ilabel
.len
= buflen
;
4847 cred
= rpc_lookup_cred();
4849 return PTR_ERR(cred
);
4851 olabel
= nfs4_label_alloc(NFS_SERVER(inode
), GFP_KERNEL
);
4852 if (IS_ERR(olabel
)) {
4853 status
= -PTR_ERR(olabel
);
4857 status
= nfs4_do_set_security_label(inode
, &ilabel
, &fattr
, olabel
);
4859 nfs_setsecurity(inode
, &fattr
, olabel
);
4861 nfs4_label_free(olabel
);
4866 #endif /* CONFIG_NFS_V4_SECURITY_LABEL */
4870 nfs4_async_handle_error(struct rpc_task
*task
, const struct nfs_server
*server
,
4871 struct nfs4_state
*state
, long *timeout
)
4873 struct nfs_client
*clp
= server
->nfs_client
;
4875 if (task
->tk_status
>= 0)
4877 switch(task
->tk_status
) {
4878 case -NFS4ERR_DELEG_REVOKED
:
4879 case -NFS4ERR_ADMIN_REVOKED
:
4880 case -NFS4ERR_BAD_STATEID
:
4881 case -NFS4ERR_OPENMODE
:
4884 if (nfs4_schedule_stateid_recovery(server
, state
) < 0)
4885 goto recovery_failed
;
4886 goto wait_on_recovery
;
4887 case -NFS4ERR_EXPIRED
:
4888 if (state
!= NULL
) {
4889 if (nfs4_schedule_stateid_recovery(server
, state
) < 0)
4890 goto recovery_failed
;
4892 case -NFS4ERR_STALE_STATEID
:
4893 case -NFS4ERR_STALE_CLIENTID
:
4894 nfs4_schedule_lease_recovery(clp
);
4895 goto wait_on_recovery
;
4896 case -NFS4ERR_MOVED
:
4897 if (nfs4_schedule_migration_recovery(server
) < 0)
4898 goto recovery_failed
;
4899 goto wait_on_recovery
;
4900 case -NFS4ERR_LEASE_MOVED
:
4901 nfs4_schedule_lease_moved_recovery(clp
);
4902 goto wait_on_recovery
;
4903 #if defined(CONFIG_NFS_V4_1)
4904 case -NFS4ERR_BADSESSION
:
4905 case -NFS4ERR_BADSLOT
:
4906 case -NFS4ERR_BAD_HIGH_SLOT
:
4907 case -NFS4ERR_DEADSESSION
:
4908 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
4909 case -NFS4ERR_SEQ_FALSE_RETRY
:
4910 case -NFS4ERR_SEQ_MISORDERED
:
4911 dprintk("%s ERROR %d, Reset session\n", __func__
,
4913 nfs4_schedule_session_recovery(clp
->cl_session
, task
->tk_status
);
4914 goto wait_on_recovery
;
4915 #endif /* CONFIG_NFS_V4_1 */
4916 case -NFS4ERR_DELAY
:
4917 nfs_inc_server_stats(server
, NFSIOS_DELAY
);
4918 rpc_delay(task
, nfs4_update_delay(timeout
));
4920 case -NFS4ERR_GRACE
:
4921 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
4922 case -NFS4ERR_RETRY_UNCACHED_REP
:
4923 case -NFS4ERR_OLD_STATEID
:
4926 task
->tk_status
= nfs4_map_errors(task
->tk_status
);
4929 task
->tk_status
= -EIO
;
4932 rpc_sleep_on(&clp
->cl_rpcwaitq
, task
, NULL
);
4933 if (test_bit(NFS4CLNT_MANAGER_RUNNING
, &clp
->cl_state
) == 0)
4934 rpc_wake_up_queued_task(&clp
->cl_rpcwaitq
, task
);
4935 if (test_bit(NFS_MIG_FAILED
, &server
->mig_status
))
4936 goto recovery_failed
;
4938 task
->tk_status
= 0;
4942 static void nfs4_init_boot_verifier(const struct nfs_client
*clp
,
4943 nfs4_verifier
*bootverf
)
4947 if (test_bit(NFS4CLNT_PURGE_STATE
, &clp
->cl_state
)) {
4948 /* An impossible timestamp guarantees this value
4949 * will never match a generated boot time. */
4951 verf
[1] = cpu_to_be32(NSEC_PER_SEC
+ 1);
4953 struct nfs_net
*nn
= net_generic(clp
->cl_net
, nfs_net_id
);
4954 verf
[0] = cpu_to_be32(nn
->boot_time
.tv_sec
);
4955 verf
[1] = cpu_to_be32(nn
->boot_time
.tv_nsec
);
4957 memcpy(bootverf
->data
, verf
, sizeof(bootverf
->data
));
4961 nfs4_init_nonuniform_client_string(struct nfs_client
*clp
)
4966 bool retried
= false;
4968 if (clp
->cl_owner_id
!= NULL
)
4972 len
= 10 + strlen(clp
->cl_ipaddr
) + 1 +
4973 strlen(rpc_peeraddr2str(clp
->cl_rpcclient
, RPC_DISPLAY_ADDR
)) +
4975 strlen(rpc_peeraddr2str(clp
->cl_rpcclient
, RPC_DISPLAY_PROTO
)) +
4979 if (len
> NFS4_OPAQUE_LIMIT
+ 1)
4983 * Since this string is allocated at mount time, and held until the
4984 * nfs_client is destroyed, we can use GFP_KERNEL here w/o worrying
4985 * about a memory-reclaim deadlock.
4987 str
= kmalloc(len
, GFP_KERNEL
);
4992 result
= scnprintf(str
, len
, "Linux NFSv4.0 %s/%s %s",
4994 rpc_peeraddr2str(clp
->cl_rpcclient
, RPC_DISPLAY_ADDR
),
4995 rpc_peeraddr2str(clp
->cl_rpcclient
, RPC_DISPLAY_PROTO
));
4998 /* Did something change? */
4999 if (result
>= len
) {
5006 clp
->cl_owner_id
= str
;
5011 nfs4_init_uniform_client_string(struct nfs_client
*clp
,
5012 char *buf
, size_t len
)
5014 const char *nodename
= clp
->cl_rpcclient
->cl_nodename
;
5015 unsigned int result
;
5017 if (clp
->cl_owner_id
!= NULL
)
5018 return strlcpy(buf
, clp
->cl_owner_id
, len
);
5020 if (nfs4_client_id_uniquifier
[0] != '\0')
5021 result
= scnprintf(buf
, len
, "Linux NFSv%u.%u %s/%s",
5022 clp
->rpc_ops
->version
,
5023 clp
->cl_minorversion
,
5024 nfs4_client_id_uniquifier
,
5027 result
= scnprintf(buf
, len
, "Linux NFSv%u.%u %s",
5028 clp
->rpc_ops
->version
, clp
->cl_minorversion
,
5030 clp
->cl_owner_id
= kstrdup(buf
, GFP_KERNEL
);
5035 * nfs4_callback_up_net() starts only "tcp" and "tcp6" callback
5036 * services. Advertise one based on the address family of the
5040 nfs4_init_callback_netid(const struct nfs_client
*clp
, char *buf
, size_t len
)
5042 if (strchr(clp
->cl_ipaddr
, ':') != NULL
)
5043 return scnprintf(buf
, len
, "tcp6");
5045 return scnprintf(buf
, len
, "tcp");
5048 static void nfs4_setclientid_done(struct rpc_task
*task
, void *calldata
)
5050 struct nfs4_setclientid
*sc
= calldata
;
5052 if (task
->tk_status
== 0)
5053 sc
->sc_cred
= get_rpccred(task
->tk_rqstp
->rq_cred
);
5056 static const struct rpc_call_ops nfs4_setclientid_ops
= {
5057 .rpc_call_done
= nfs4_setclientid_done
,
5061 * nfs4_proc_setclientid - Negotiate client ID
5062 * @clp: state data structure
5063 * @program: RPC program for NFSv4 callback service
5064 * @port: IP port number for NFS4 callback service
5065 * @cred: RPC credential to use for this call
5066 * @res: where to place the result
5068 * Returns zero, a negative errno, or a negative NFS4ERR status code.
5070 int nfs4_proc_setclientid(struct nfs_client
*clp
, u32 program
,
5071 unsigned short port
, struct rpc_cred
*cred
,
5072 struct nfs4_setclientid_res
*res
)
5074 nfs4_verifier sc_verifier
;
5075 struct nfs4_setclientid setclientid
= {
5076 .sc_verifier
= &sc_verifier
,
5080 struct rpc_message msg
= {
5081 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID
],
5082 .rpc_argp
= &setclientid
,
5086 struct rpc_task
*task
;
5087 struct rpc_task_setup task_setup_data
= {
5088 .rpc_client
= clp
->cl_rpcclient
,
5089 .rpc_message
= &msg
,
5090 .callback_ops
= &nfs4_setclientid_ops
,
5091 .callback_data
= &setclientid
,
5092 .flags
= RPC_TASK_TIMEOUT
,
5096 /* nfs_client_id4 */
5097 nfs4_init_boot_verifier(clp
, &sc_verifier
);
5098 if (test_bit(NFS_CS_MIGRATION
, &clp
->cl_flags
)) {
5099 setclientid
.sc_name_len
=
5100 nfs4_init_uniform_client_string(clp
,
5101 setclientid
.sc_name
,
5102 sizeof(setclientid
.sc_name
));
5103 if (!clp
->cl_owner_id
) {
5108 status
= nfs4_init_nonuniform_client_string(clp
);
5114 setclientid
.sc_netid_len
=
5115 nfs4_init_callback_netid(clp
,
5116 setclientid
.sc_netid
,
5117 sizeof(setclientid
.sc_netid
));
5118 setclientid
.sc_uaddr_len
= scnprintf(setclientid
.sc_uaddr
,
5119 sizeof(setclientid
.sc_uaddr
), "%s.%u.%u",
5120 clp
->cl_ipaddr
, port
>> 8, port
& 255);
5122 dprintk("NFS call setclientid auth=%s, '%s'\n",
5123 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
5125 task
= rpc_run_task(&task_setup_data
);
5127 status
= PTR_ERR(task
);
5130 status
= task
->tk_status
;
5131 if (setclientid
.sc_cred
) {
5132 clp
->cl_acceptor
= rpcauth_stringify_acceptor(setclientid
.sc_cred
);
5133 put_rpccred(setclientid
.sc_cred
);
5137 trace_nfs4_setclientid(clp
, status
);
5138 dprintk("NFS reply setclientid: %d\n", status
);
5143 * nfs4_proc_setclientid_confirm - Confirm client ID
5144 * @clp: state data structure
5145 * @res: result of a previous SETCLIENTID
5146 * @cred: RPC credential to use for this call
5148 * Returns zero, a negative errno, or a negative NFS4ERR status code.
5150 int nfs4_proc_setclientid_confirm(struct nfs_client
*clp
,
5151 struct nfs4_setclientid_res
*arg
,
5152 struct rpc_cred
*cred
)
5154 struct rpc_message msg
= {
5155 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID_CONFIRM
],
5161 dprintk("NFS call setclientid_confirm auth=%s, (client ID %llx)\n",
5162 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
5164 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5165 trace_nfs4_setclientid_confirm(clp
, status
);
5166 dprintk("NFS reply setclientid_confirm: %d\n", status
);
5170 struct nfs4_delegreturndata
{
5171 struct nfs4_delegreturnargs args
;
5172 struct nfs4_delegreturnres res
;
5174 nfs4_stateid stateid
;
5175 unsigned long timestamp
;
5176 struct nfs_fattr fattr
;
5178 struct inode
*inode
;
5183 static void nfs4_delegreturn_done(struct rpc_task
*task
, void *calldata
)
5185 struct nfs4_delegreturndata
*data
= calldata
;
5187 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
5190 trace_nfs4_delegreturn_exit(&data
->args
, &data
->res
, task
->tk_status
);
5191 switch (task
->tk_status
) {
5193 renew_lease(data
->res
.server
, data
->timestamp
);
5194 case -NFS4ERR_ADMIN_REVOKED
:
5195 case -NFS4ERR_DELEG_REVOKED
:
5196 case -NFS4ERR_BAD_STATEID
:
5197 case -NFS4ERR_OLD_STATEID
:
5198 case -NFS4ERR_STALE_STATEID
:
5199 case -NFS4ERR_EXPIRED
:
5200 task
->tk_status
= 0;
5202 pnfs_roc_set_barrier(data
->inode
, data
->roc_barrier
);
5205 if (nfs4_async_handle_error(task
, data
->res
.server
,
5206 NULL
, NULL
) == -EAGAIN
) {
5207 rpc_restart_call_prepare(task
);
5211 data
->rpc_status
= task
->tk_status
;
5214 static void nfs4_delegreturn_release(void *calldata
)
5216 struct nfs4_delegreturndata
*data
= calldata
;
5217 struct inode
*inode
= data
->inode
;
5221 pnfs_roc_release(inode
);
5222 nfs_iput_and_deactive(inode
);
5227 static void nfs4_delegreturn_prepare(struct rpc_task
*task
, void *data
)
5229 struct nfs4_delegreturndata
*d_data
;
5231 d_data
= (struct nfs4_delegreturndata
*)data
;
5234 pnfs_roc_drain(d_data
->inode
, &d_data
->roc_barrier
, task
))
5237 nfs4_setup_sequence(d_data
->res
.server
,
5238 &d_data
->args
.seq_args
,
5239 &d_data
->res
.seq_res
,
5243 static const struct rpc_call_ops nfs4_delegreturn_ops
= {
5244 .rpc_call_prepare
= nfs4_delegreturn_prepare
,
5245 .rpc_call_done
= nfs4_delegreturn_done
,
5246 .rpc_release
= nfs4_delegreturn_release
,
5249 static int _nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
5251 struct nfs4_delegreturndata
*data
;
5252 struct nfs_server
*server
= NFS_SERVER(inode
);
5253 struct rpc_task
*task
;
5254 struct rpc_message msg
= {
5255 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DELEGRETURN
],
5258 struct rpc_task_setup task_setup_data
= {
5259 .rpc_client
= server
->client
,
5260 .rpc_message
= &msg
,
5261 .callback_ops
= &nfs4_delegreturn_ops
,
5262 .flags
= RPC_TASK_ASYNC
,
5266 data
= kzalloc(sizeof(*data
), GFP_NOFS
);
5269 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
5270 data
->args
.fhandle
= &data
->fh
;
5271 data
->args
.stateid
= &data
->stateid
;
5272 data
->args
.bitmask
= server
->cache_consistency_bitmask
;
5273 nfs_copy_fh(&data
->fh
, NFS_FH(inode
));
5274 nfs4_stateid_copy(&data
->stateid
, stateid
);
5275 data
->res
.fattr
= &data
->fattr
;
5276 data
->res
.server
= server
;
5277 nfs_fattr_init(data
->res
.fattr
);
5278 data
->timestamp
= jiffies
;
5279 data
->rpc_status
= 0;
5280 data
->inode
= nfs_igrab_and_active(inode
);
5282 data
->roc
= nfs4_roc(inode
);
5284 task_setup_data
.callback_data
= data
;
5285 msg
.rpc_argp
= &data
->args
;
5286 msg
.rpc_resp
= &data
->res
;
5287 task
= rpc_run_task(&task_setup_data
);
5289 return PTR_ERR(task
);
5292 status
= nfs4_wait_for_completion_rpc_task(task
);
5295 status
= data
->rpc_status
;
5297 nfs_post_op_update_inode_force_wcc(inode
, &data
->fattr
);
5299 nfs_refresh_inode(inode
, &data
->fattr
);
5305 int nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
5307 struct nfs_server
*server
= NFS_SERVER(inode
);
5308 struct nfs4_exception exception
= { };
5311 err
= _nfs4_proc_delegreturn(inode
, cred
, stateid
, issync
);
5312 trace_nfs4_delegreturn(inode
, err
);
5314 case -NFS4ERR_STALE_STATEID
:
5315 case -NFS4ERR_EXPIRED
:
5319 err
= nfs4_handle_exception(server
, err
, &exception
);
5320 } while (exception
.retry
);
5324 #define NFS4_LOCK_MINTIMEOUT (1 * HZ)
5325 #define NFS4_LOCK_MAXTIMEOUT (30 * HZ)
5328 * sleep, with exponential backoff, and retry the LOCK operation.
5330 static unsigned long
5331 nfs4_set_lock_task_retry(unsigned long timeout
)
5333 freezable_schedule_timeout_killable_unsafe(timeout
);
5335 if (timeout
> NFS4_LOCK_MAXTIMEOUT
)
5336 return NFS4_LOCK_MAXTIMEOUT
;
5340 static int _nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5342 struct inode
*inode
= state
->inode
;
5343 struct nfs_server
*server
= NFS_SERVER(inode
);
5344 struct nfs_client
*clp
= server
->nfs_client
;
5345 struct nfs_lockt_args arg
= {
5346 .fh
= NFS_FH(inode
),
5349 struct nfs_lockt_res res
= {
5352 struct rpc_message msg
= {
5353 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKT
],
5356 .rpc_cred
= state
->owner
->so_cred
,
5358 struct nfs4_lock_state
*lsp
;
5361 arg
.lock_owner
.clientid
= clp
->cl_clientid
;
5362 status
= nfs4_set_lock_state(state
, request
);
5365 lsp
= request
->fl_u
.nfs4_fl
.owner
;
5366 arg
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
5367 arg
.lock_owner
.s_dev
= server
->s_dev
;
5368 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
5371 request
->fl_type
= F_UNLCK
;
5373 case -NFS4ERR_DENIED
:
5376 request
->fl_ops
->fl_release_private(request
);
5377 request
->fl_ops
= NULL
;
5382 static int nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5384 struct nfs4_exception exception
= { };
5388 err
= _nfs4_proc_getlk(state
, cmd
, request
);
5389 trace_nfs4_get_lock(request
, state
, cmd
, err
);
5390 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
), err
,
5392 } while (exception
.retry
);
5396 static int do_vfs_lock(struct file
*file
, struct file_lock
*fl
)
5399 switch (fl
->fl_flags
& (FL_POSIX
|FL_FLOCK
)) {
5401 res
= posix_lock_file_wait(file
, fl
);
5404 res
= flock_lock_file_wait(file
, fl
);
5412 struct nfs4_unlockdata
{
5413 struct nfs_locku_args arg
;
5414 struct nfs_locku_res res
;
5415 struct nfs4_lock_state
*lsp
;
5416 struct nfs_open_context
*ctx
;
5417 struct file_lock fl
;
5418 const struct nfs_server
*server
;
5419 unsigned long timestamp
;
5422 static struct nfs4_unlockdata
*nfs4_alloc_unlockdata(struct file_lock
*fl
,
5423 struct nfs_open_context
*ctx
,
5424 struct nfs4_lock_state
*lsp
,
5425 struct nfs_seqid
*seqid
)
5427 struct nfs4_unlockdata
*p
;
5428 struct inode
*inode
= lsp
->ls_state
->inode
;
5430 p
= kzalloc(sizeof(*p
), GFP_NOFS
);
5433 p
->arg
.fh
= NFS_FH(inode
);
5435 p
->arg
.seqid
= seqid
;
5436 p
->res
.seqid
= seqid
;
5438 atomic_inc(&lsp
->ls_count
);
5439 /* Ensure we don't close file until we're done freeing locks! */
5440 p
->ctx
= get_nfs_open_context(ctx
);
5441 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
5442 p
->server
= NFS_SERVER(inode
);
5446 static void nfs4_locku_release_calldata(void *data
)
5448 struct nfs4_unlockdata
*calldata
= data
;
5449 nfs_free_seqid(calldata
->arg
.seqid
);
5450 nfs4_put_lock_state(calldata
->lsp
);
5451 put_nfs_open_context(calldata
->ctx
);
5455 static void nfs4_locku_done(struct rpc_task
*task
, void *data
)
5457 struct nfs4_unlockdata
*calldata
= data
;
5459 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
5461 switch (task
->tk_status
) {
5463 renew_lease(calldata
->server
, calldata
->timestamp
);
5464 do_vfs_lock(calldata
->fl
.fl_file
, &calldata
->fl
);
5465 if (nfs4_update_lock_stateid(calldata
->lsp
,
5466 &calldata
->res
.stateid
))
5468 case -NFS4ERR_BAD_STATEID
:
5469 case -NFS4ERR_OLD_STATEID
:
5470 case -NFS4ERR_STALE_STATEID
:
5471 case -NFS4ERR_EXPIRED
:
5472 if (!nfs4_stateid_match(&calldata
->arg
.stateid
,
5473 &calldata
->lsp
->ls_stateid
))
5474 rpc_restart_call_prepare(task
);
5477 if (nfs4_async_handle_error(task
, calldata
->server
,
5478 NULL
, NULL
) == -EAGAIN
)
5479 rpc_restart_call_prepare(task
);
5481 nfs_release_seqid(calldata
->arg
.seqid
);
5484 static void nfs4_locku_prepare(struct rpc_task
*task
, void *data
)
5486 struct nfs4_unlockdata
*calldata
= data
;
5488 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
5490 nfs4_stateid_copy(&calldata
->arg
.stateid
, &calldata
->lsp
->ls_stateid
);
5491 if (test_bit(NFS_LOCK_INITIALIZED
, &calldata
->lsp
->ls_flags
) == 0) {
5492 /* Note: exit _without_ running nfs4_locku_done */
5495 calldata
->timestamp
= jiffies
;
5496 if (nfs4_setup_sequence(calldata
->server
,
5497 &calldata
->arg
.seq_args
,
5498 &calldata
->res
.seq_res
,
5500 nfs_release_seqid(calldata
->arg
.seqid
);
5503 task
->tk_action
= NULL
;
5505 nfs4_sequence_done(task
, &calldata
->res
.seq_res
);
5508 static const struct rpc_call_ops nfs4_locku_ops
= {
5509 .rpc_call_prepare
= nfs4_locku_prepare
,
5510 .rpc_call_done
= nfs4_locku_done
,
5511 .rpc_release
= nfs4_locku_release_calldata
,
5514 static struct rpc_task
*nfs4_do_unlck(struct file_lock
*fl
,
5515 struct nfs_open_context
*ctx
,
5516 struct nfs4_lock_state
*lsp
,
5517 struct nfs_seqid
*seqid
)
5519 struct nfs4_unlockdata
*data
;
5520 struct rpc_message msg
= {
5521 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKU
],
5522 .rpc_cred
= ctx
->cred
,
5524 struct rpc_task_setup task_setup_data
= {
5525 .rpc_client
= NFS_CLIENT(lsp
->ls_state
->inode
),
5526 .rpc_message
= &msg
,
5527 .callback_ops
= &nfs4_locku_ops
,
5528 .workqueue
= nfsiod_workqueue
,
5529 .flags
= RPC_TASK_ASYNC
,
5532 nfs4_state_protect(NFS_SERVER(lsp
->ls_state
->inode
)->nfs_client
,
5533 NFS_SP4_MACH_CRED_CLEANUP
, &task_setup_data
.rpc_client
, &msg
);
5535 /* Ensure this is an unlock - when canceling a lock, the
5536 * canceled lock is passed in, and it won't be an unlock.
5538 fl
->fl_type
= F_UNLCK
;
5540 data
= nfs4_alloc_unlockdata(fl
, ctx
, lsp
, seqid
);
5542 nfs_free_seqid(seqid
);
5543 return ERR_PTR(-ENOMEM
);
5546 nfs4_init_sequence(&data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
5547 msg
.rpc_argp
= &data
->arg
;
5548 msg
.rpc_resp
= &data
->res
;
5549 task_setup_data
.callback_data
= data
;
5550 return rpc_run_task(&task_setup_data
);
5553 static int nfs4_proc_unlck(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5555 struct inode
*inode
= state
->inode
;
5556 struct nfs4_state_owner
*sp
= state
->owner
;
5557 struct nfs_inode
*nfsi
= NFS_I(inode
);
5558 struct nfs_seqid
*seqid
;
5559 struct nfs4_lock_state
*lsp
;
5560 struct rpc_task
*task
;
5561 struct nfs_seqid
*(*alloc_seqid
)(struct nfs_seqid_counter
*, gfp_t
);
5563 unsigned char fl_flags
= request
->fl_flags
;
5565 status
= nfs4_set_lock_state(state
, request
);
5566 /* Unlock _before_ we do the RPC call */
5567 request
->fl_flags
|= FL_EXISTS
;
5568 /* Exclude nfs_delegation_claim_locks() */
5569 mutex_lock(&sp
->so_delegreturn_mutex
);
5570 /* Exclude nfs4_reclaim_open_stateid() - note nesting! */
5571 down_read(&nfsi
->rwsem
);
5572 if (do_vfs_lock(request
->fl_file
, request
) == -ENOENT
) {
5573 up_read(&nfsi
->rwsem
);
5574 mutex_unlock(&sp
->so_delegreturn_mutex
);
5577 up_read(&nfsi
->rwsem
);
5578 mutex_unlock(&sp
->so_delegreturn_mutex
);
5581 /* Is this a delegated lock? */
5582 lsp
= request
->fl_u
.nfs4_fl
.owner
;
5583 if (test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
) == 0)
5585 alloc_seqid
= NFS_SERVER(inode
)->nfs_client
->cl_mvops
->alloc_seqid
;
5586 seqid
= alloc_seqid(&lsp
->ls_seqid
, GFP_KERNEL
);
5590 task
= nfs4_do_unlck(request
, nfs_file_open_context(request
->fl_file
), lsp
, seqid
);
5591 status
= PTR_ERR(task
);
5594 status
= nfs4_wait_for_completion_rpc_task(task
);
5597 request
->fl_flags
= fl_flags
;
5598 trace_nfs4_unlock(request
, state
, F_SETLK
, status
);
5602 struct nfs4_lockdata
{
5603 struct nfs_lock_args arg
;
5604 struct nfs_lock_res res
;
5605 struct nfs4_lock_state
*lsp
;
5606 struct nfs_open_context
*ctx
;
5607 struct file_lock fl
;
5608 unsigned long timestamp
;
5611 struct nfs_server
*server
;
5614 static struct nfs4_lockdata
*nfs4_alloc_lockdata(struct file_lock
*fl
,
5615 struct nfs_open_context
*ctx
, struct nfs4_lock_state
*lsp
,
5618 struct nfs4_lockdata
*p
;
5619 struct inode
*inode
= lsp
->ls_state
->inode
;
5620 struct nfs_server
*server
= NFS_SERVER(inode
);
5621 struct nfs_seqid
*(*alloc_seqid
)(struct nfs_seqid_counter
*, gfp_t
);
5623 p
= kzalloc(sizeof(*p
), gfp_mask
);
5627 p
->arg
.fh
= NFS_FH(inode
);
5629 p
->arg
.open_seqid
= nfs_alloc_seqid(&lsp
->ls_state
->owner
->so_seqid
, gfp_mask
);
5630 if (IS_ERR(p
->arg
.open_seqid
))
5632 alloc_seqid
= server
->nfs_client
->cl_mvops
->alloc_seqid
;
5633 p
->arg
.lock_seqid
= alloc_seqid(&lsp
->ls_seqid
, gfp_mask
);
5634 if (IS_ERR(p
->arg
.lock_seqid
))
5635 goto out_free_seqid
;
5636 p
->arg
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
5637 p
->arg
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
5638 p
->arg
.lock_owner
.s_dev
= server
->s_dev
;
5639 p
->res
.lock_seqid
= p
->arg
.lock_seqid
;
5642 atomic_inc(&lsp
->ls_count
);
5643 p
->ctx
= get_nfs_open_context(ctx
);
5644 get_file(fl
->fl_file
);
5645 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
5648 nfs_free_seqid(p
->arg
.open_seqid
);
5654 static void nfs4_lock_prepare(struct rpc_task
*task
, void *calldata
)
5656 struct nfs4_lockdata
*data
= calldata
;
5657 struct nfs4_state
*state
= data
->lsp
->ls_state
;
5659 dprintk("%s: begin!\n", __func__
);
5660 if (nfs_wait_on_sequence(data
->arg
.lock_seqid
, task
) != 0)
5662 /* Do we need to do an open_to_lock_owner? */
5663 if (!test_bit(NFS_LOCK_INITIALIZED
, &data
->lsp
->ls_flags
)) {
5664 if (nfs_wait_on_sequence(data
->arg
.open_seqid
, task
) != 0) {
5665 goto out_release_lock_seqid
;
5667 nfs4_stateid_copy(&data
->arg
.open_stateid
,
5668 &state
->open_stateid
);
5669 data
->arg
.new_lock_owner
= 1;
5670 data
->res
.open_seqid
= data
->arg
.open_seqid
;
5672 data
->arg
.new_lock_owner
= 0;
5673 nfs4_stateid_copy(&data
->arg
.lock_stateid
,
5674 &data
->lsp
->ls_stateid
);
5676 if (!nfs4_valid_open_stateid(state
)) {
5677 data
->rpc_status
= -EBADF
;
5678 task
->tk_action
= NULL
;
5679 goto out_release_open_seqid
;
5681 data
->timestamp
= jiffies
;
5682 if (nfs4_setup_sequence(data
->server
,
5683 &data
->arg
.seq_args
,
5687 out_release_open_seqid
:
5688 nfs_release_seqid(data
->arg
.open_seqid
);
5689 out_release_lock_seqid
:
5690 nfs_release_seqid(data
->arg
.lock_seqid
);
5692 nfs4_sequence_done(task
, &data
->res
.seq_res
);
5693 dprintk("%s: done!, ret = %d\n", __func__
, data
->rpc_status
);
5696 static void nfs4_lock_done(struct rpc_task
*task
, void *calldata
)
5698 struct nfs4_lockdata
*data
= calldata
;
5699 struct nfs4_lock_state
*lsp
= data
->lsp
;
5701 dprintk("%s: begin!\n", __func__
);
5703 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
5706 data
->rpc_status
= task
->tk_status
;
5707 switch (task
->tk_status
) {
5709 renew_lease(NFS_SERVER(d_inode(data
->ctx
->dentry
)),
5711 if (data
->arg
.new_lock
) {
5712 data
->fl
.fl_flags
&= ~(FL_SLEEP
| FL_ACCESS
);
5713 if (do_vfs_lock(data
->fl
.fl_file
, &data
->fl
) < 0) {
5714 rpc_restart_call_prepare(task
);
5718 if (data
->arg
.new_lock_owner
!= 0) {
5719 nfs_confirm_seqid(&lsp
->ls_seqid
, 0);
5720 nfs4_stateid_copy(&lsp
->ls_stateid
, &data
->res
.stateid
);
5721 set_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
);
5722 } else if (!nfs4_update_lock_stateid(lsp
, &data
->res
.stateid
))
5723 rpc_restart_call_prepare(task
);
5725 case -NFS4ERR_BAD_STATEID
:
5726 case -NFS4ERR_OLD_STATEID
:
5727 case -NFS4ERR_STALE_STATEID
:
5728 case -NFS4ERR_EXPIRED
:
5729 if (data
->arg
.new_lock_owner
!= 0) {
5730 if (!nfs4_stateid_match(&data
->arg
.open_stateid
,
5731 &lsp
->ls_state
->open_stateid
))
5732 rpc_restart_call_prepare(task
);
5733 } else if (!nfs4_stateid_match(&data
->arg
.lock_stateid
,
5735 rpc_restart_call_prepare(task
);
5737 dprintk("%s: done, ret = %d!\n", __func__
, data
->rpc_status
);
5740 static void nfs4_lock_release(void *calldata
)
5742 struct nfs4_lockdata
*data
= calldata
;
5744 dprintk("%s: begin!\n", __func__
);
5745 nfs_free_seqid(data
->arg
.open_seqid
);
5746 if (data
->cancelled
!= 0) {
5747 struct rpc_task
*task
;
5748 task
= nfs4_do_unlck(&data
->fl
, data
->ctx
, data
->lsp
,
5749 data
->arg
.lock_seqid
);
5751 rpc_put_task_async(task
);
5752 dprintk("%s: cancelling lock!\n", __func__
);
5754 nfs_free_seqid(data
->arg
.lock_seqid
);
5755 nfs4_put_lock_state(data
->lsp
);
5756 put_nfs_open_context(data
->ctx
);
5757 fput(data
->fl
.fl_file
);
5759 dprintk("%s: done!\n", __func__
);
5762 static const struct rpc_call_ops nfs4_lock_ops
= {
5763 .rpc_call_prepare
= nfs4_lock_prepare
,
5764 .rpc_call_done
= nfs4_lock_done
,
5765 .rpc_release
= nfs4_lock_release
,
5768 static void nfs4_handle_setlk_error(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
, int new_lock_owner
, int error
)
5771 case -NFS4ERR_ADMIN_REVOKED
:
5772 case -NFS4ERR_BAD_STATEID
:
5773 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
5774 if (new_lock_owner
!= 0 ||
5775 test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
) != 0)
5776 nfs4_schedule_stateid_recovery(server
, lsp
->ls_state
);
5778 case -NFS4ERR_STALE_STATEID
:
5779 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
5780 case -NFS4ERR_EXPIRED
:
5781 nfs4_schedule_lease_recovery(server
->nfs_client
);
5785 static int _nfs4_do_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*fl
, int recovery_type
)
5787 struct nfs4_lockdata
*data
;
5788 struct rpc_task
*task
;
5789 struct rpc_message msg
= {
5790 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCK
],
5791 .rpc_cred
= state
->owner
->so_cred
,
5793 struct rpc_task_setup task_setup_data
= {
5794 .rpc_client
= NFS_CLIENT(state
->inode
),
5795 .rpc_message
= &msg
,
5796 .callback_ops
= &nfs4_lock_ops
,
5797 .workqueue
= nfsiod_workqueue
,
5798 .flags
= RPC_TASK_ASYNC
,
5802 dprintk("%s: begin!\n", __func__
);
5803 data
= nfs4_alloc_lockdata(fl
, nfs_file_open_context(fl
->fl_file
),
5804 fl
->fl_u
.nfs4_fl
.owner
,
5805 recovery_type
== NFS_LOCK_NEW
? GFP_KERNEL
: GFP_NOFS
);
5809 data
->arg
.block
= 1;
5810 nfs4_init_sequence(&data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
5811 msg
.rpc_argp
= &data
->arg
;
5812 msg
.rpc_resp
= &data
->res
;
5813 task_setup_data
.callback_data
= data
;
5814 if (recovery_type
> NFS_LOCK_NEW
) {
5815 if (recovery_type
== NFS_LOCK_RECLAIM
)
5816 data
->arg
.reclaim
= NFS_LOCK_RECLAIM
;
5817 nfs4_set_sequence_privileged(&data
->arg
.seq_args
);
5819 data
->arg
.new_lock
= 1;
5820 task
= rpc_run_task(&task_setup_data
);
5822 return PTR_ERR(task
);
5823 ret
= nfs4_wait_for_completion_rpc_task(task
);
5825 ret
= data
->rpc_status
;
5827 nfs4_handle_setlk_error(data
->server
, data
->lsp
,
5828 data
->arg
.new_lock_owner
, ret
);
5830 data
->cancelled
= 1;
5832 dprintk("%s: done, ret = %d!\n", __func__
, ret
);
5836 static int nfs4_lock_reclaim(struct nfs4_state
*state
, struct file_lock
*request
)
5838 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
5839 struct nfs4_exception exception
= {
5840 .inode
= state
->inode
,
5845 /* Cache the lock if possible... */
5846 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
5848 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_RECLAIM
);
5849 trace_nfs4_lock_reclaim(request
, state
, F_SETLK
, err
);
5850 if (err
!= -NFS4ERR_DELAY
)
5852 nfs4_handle_exception(server
, err
, &exception
);
5853 } while (exception
.retry
);
5857 static int nfs4_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
5859 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
5860 struct nfs4_exception exception
= {
5861 .inode
= state
->inode
,
5865 err
= nfs4_set_lock_state(state
, request
);
5868 if (!recover_lost_locks
) {
5869 set_bit(NFS_LOCK_LOST
, &request
->fl_u
.nfs4_fl
.owner
->ls_flags
);
5873 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
5875 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_EXPIRED
);
5876 trace_nfs4_lock_expired(request
, state
, F_SETLK
, err
);
5880 case -NFS4ERR_GRACE
:
5881 case -NFS4ERR_DELAY
:
5882 nfs4_handle_exception(server
, err
, &exception
);
5885 } while (exception
.retry
);
5890 #if defined(CONFIG_NFS_V4_1)
5892 * nfs41_check_expired_locks - possibly free a lock stateid
5894 * @state: NFSv4 state for an inode
5896 * Returns NFS_OK if recovery for this stateid is now finished.
5897 * Otherwise a negative NFS4ERR value is returned.
5899 static int nfs41_check_expired_locks(struct nfs4_state
*state
)
5901 int status
, ret
= -NFS4ERR_BAD_STATEID
;
5902 struct nfs4_lock_state
*lsp
;
5903 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
5905 list_for_each_entry(lsp
, &state
->lock_states
, ls_locks
) {
5906 if (test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
)) {
5907 struct rpc_cred
*cred
= lsp
->ls_state
->owner
->so_cred
;
5909 status
= nfs41_test_stateid(server
,
5912 trace_nfs4_test_lock_stateid(state
, lsp
, status
);
5913 if (status
!= NFS_OK
) {
5914 /* Free the stateid unless the server
5915 * informs us the stateid is unrecognized. */
5916 if (status
!= -NFS4ERR_BAD_STATEID
)
5917 nfs41_free_stateid(server
,
5920 clear_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
);
5929 static int nfs41_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
5931 int status
= NFS_OK
;
5933 if (test_bit(LK_STATE_IN_USE
, &state
->flags
))
5934 status
= nfs41_check_expired_locks(state
);
5935 if (status
!= NFS_OK
)
5936 status
= nfs4_lock_expired(state
, request
);
5941 static int _nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5943 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
5944 unsigned char fl_flags
= request
->fl_flags
;
5945 int status
= -ENOLCK
;
5947 if ((fl_flags
& FL_POSIX
) &&
5948 !test_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
))
5950 /* Is this a delegated open? */
5951 status
= nfs4_set_lock_state(state
, request
);
5954 request
->fl_flags
|= FL_ACCESS
;
5955 status
= do_vfs_lock(request
->fl_file
, request
);
5958 down_read(&nfsi
->rwsem
);
5959 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
)) {
5960 /* Yes: cache locks! */
5961 /* ...but avoid races with delegation recall... */
5962 request
->fl_flags
= fl_flags
& ~FL_SLEEP
;
5963 status
= do_vfs_lock(request
->fl_file
, request
);
5964 up_read(&nfsi
->rwsem
);
5967 up_read(&nfsi
->rwsem
);
5968 status
= _nfs4_do_setlk(state
, cmd
, request
, NFS_LOCK_NEW
);
5970 request
->fl_flags
= fl_flags
;
5974 static int nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5976 struct nfs4_exception exception
= {
5978 .inode
= state
->inode
,
5983 err
= _nfs4_proc_setlk(state
, cmd
, request
);
5984 trace_nfs4_set_lock(request
, state
, cmd
, err
);
5985 if (err
== -NFS4ERR_DENIED
)
5987 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
5989 } while (exception
.retry
);
5994 nfs4_proc_lock(struct file
*filp
, int cmd
, struct file_lock
*request
)
5996 struct nfs_open_context
*ctx
;
5997 struct nfs4_state
*state
;
5998 unsigned long timeout
= NFS4_LOCK_MINTIMEOUT
;
6001 /* verify open state */
6002 ctx
= nfs_file_open_context(filp
);
6005 if (request
->fl_start
< 0 || request
->fl_end
< 0)
6008 if (IS_GETLK(cmd
)) {
6010 return nfs4_proc_getlk(state
, F_GETLK
, request
);
6014 if (!(IS_SETLK(cmd
) || IS_SETLKW(cmd
)))
6017 if (request
->fl_type
== F_UNLCK
) {
6019 return nfs4_proc_unlck(state
, cmd
, request
);
6026 * Don't rely on the VFS having checked the file open mode,
6027 * since it won't do this for flock() locks.
6029 switch (request
->fl_type
) {
6031 if (!(filp
->f_mode
& FMODE_READ
))
6035 if (!(filp
->f_mode
& FMODE_WRITE
))
6040 status
= nfs4_proc_setlk(state
, cmd
, request
);
6041 if ((status
!= -EAGAIN
) || IS_SETLK(cmd
))
6043 timeout
= nfs4_set_lock_task_retry(timeout
);
6044 status
= -ERESTARTSYS
;
6047 } while(status
< 0);
6051 int nfs4_lock_delegation_recall(struct file_lock
*fl
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
6053 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
6056 err
= nfs4_set_lock_state(state
, fl
);
6059 err
= _nfs4_do_setlk(state
, F_SETLK
, fl
, NFS_LOCK_NEW
);
6060 return nfs4_handle_delegation_recall_error(server
, state
, stateid
, err
);
6063 struct nfs_release_lockowner_data
{
6064 struct nfs4_lock_state
*lsp
;
6065 struct nfs_server
*server
;
6066 struct nfs_release_lockowner_args args
;
6067 struct nfs_release_lockowner_res res
;
6068 unsigned long timestamp
;
6071 static void nfs4_release_lockowner_prepare(struct rpc_task
*task
, void *calldata
)
6073 struct nfs_release_lockowner_data
*data
= calldata
;
6074 struct nfs_server
*server
= data
->server
;
6075 nfs40_setup_sequence(server
->nfs_client
->cl_slot_tbl
,
6076 &data
->args
.seq_args
, &data
->res
.seq_res
, task
);
6077 data
->args
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
6078 data
->timestamp
= jiffies
;
6081 static void nfs4_release_lockowner_done(struct rpc_task
*task
, void *calldata
)
6083 struct nfs_release_lockowner_data
*data
= calldata
;
6084 struct nfs_server
*server
= data
->server
;
6086 nfs40_sequence_done(task
, &data
->res
.seq_res
);
6088 switch (task
->tk_status
) {
6090 renew_lease(server
, data
->timestamp
);
6092 case -NFS4ERR_STALE_CLIENTID
:
6093 case -NFS4ERR_EXPIRED
:
6094 nfs4_schedule_lease_recovery(server
->nfs_client
);
6096 case -NFS4ERR_LEASE_MOVED
:
6097 case -NFS4ERR_DELAY
:
6098 if (nfs4_async_handle_error(task
, server
,
6099 NULL
, NULL
) == -EAGAIN
)
6100 rpc_restart_call_prepare(task
);
6104 static void nfs4_release_lockowner_release(void *calldata
)
6106 struct nfs_release_lockowner_data
*data
= calldata
;
6107 nfs4_free_lock_state(data
->server
, data
->lsp
);
6111 static const struct rpc_call_ops nfs4_release_lockowner_ops
= {
6112 .rpc_call_prepare
= nfs4_release_lockowner_prepare
,
6113 .rpc_call_done
= nfs4_release_lockowner_done
,
6114 .rpc_release
= nfs4_release_lockowner_release
,
6118 nfs4_release_lockowner(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
)
6120 struct nfs_release_lockowner_data
*data
;
6121 struct rpc_message msg
= {
6122 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RELEASE_LOCKOWNER
],
6125 if (server
->nfs_client
->cl_mvops
->minor_version
!= 0)
6128 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
6132 data
->server
= server
;
6133 data
->args
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
6134 data
->args
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
6135 data
->args
.lock_owner
.s_dev
= server
->s_dev
;
6137 msg
.rpc_argp
= &data
->args
;
6138 msg
.rpc_resp
= &data
->res
;
6139 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 0);
6140 rpc_call_async(server
->client
, &msg
, 0, &nfs4_release_lockowner_ops
, data
);
6143 #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl"
6145 static int nfs4_xattr_set_nfs4_acl(struct dentry
*dentry
, const char *key
,
6146 const void *buf
, size_t buflen
,
6147 int flags
, int type
)
6149 if (strcmp(key
, "") != 0)
6152 return nfs4_proc_set_acl(d_inode(dentry
), buf
, buflen
);
6155 static int nfs4_xattr_get_nfs4_acl(struct dentry
*dentry
, const char *key
,
6156 void *buf
, size_t buflen
, int type
)
6158 if (strcmp(key
, "") != 0)
6161 return nfs4_proc_get_acl(d_inode(dentry
), buf
, buflen
);
6164 static size_t nfs4_xattr_list_nfs4_acl(struct dentry
*dentry
, char *list
,
6165 size_t list_len
, const char *name
,
6166 size_t name_len
, int type
)
6168 size_t len
= sizeof(XATTR_NAME_NFSV4_ACL
);
6170 if (!nfs4_server_supports_acls(NFS_SERVER(d_inode(dentry
))))
6173 if (list
&& len
<= list_len
)
6174 memcpy(list
, XATTR_NAME_NFSV4_ACL
, len
);
6178 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
6179 static inline int nfs4_server_supports_labels(struct nfs_server
*server
)
6181 return server
->caps
& NFS_CAP_SECURITY_LABEL
;
6184 static int nfs4_xattr_set_nfs4_label(struct dentry
*dentry
, const char *key
,
6185 const void *buf
, size_t buflen
,
6186 int flags
, int type
)
6188 if (security_ismaclabel(key
))
6189 return nfs4_set_security_label(dentry
, buf
, buflen
);
6194 static int nfs4_xattr_get_nfs4_label(struct dentry
*dentry
, const char *key
,
6195 void *buf
, size_t buflen
, int type
)
6197 if (security_ismaclabel(key
))
6198 return nfs4_get_security_label(d_inode(dentry
), buf
, buflen
);
6202 static size_t nfs4_xattr_list_nfs4_label(struct dentry
*dentry
, char *list
,
6203 size_t list_len
, const char *name
,
6204 size_t name_len
, int type
)
6208 if (nfs_server_capable(d_inode(dentry
), NFS_CAP_SECURITY_LABEL
)) {
6209 len
= security_inode_listsecurity(d_inode(dentry
), NULL
, 0);
6210 if (list
&& len
<= list_len
)
6211 security_inode_listsecurity(d_inode(dentry
), list
, len
);
6216 static const struct xattr_handler nfs4_xattr_nfs4_label_handler
= {
6217 .prefix
= XATTR_SECURITY_PREFIX
,
6218 .list
= nfs4_xattr_list_nfs4_label
,
6219 .get
= nfs4_xattr_get_nfs4_label
,
6220 .set
= nfs4_xattr_set_nfs4_label
,
6226 * nfs_fhget will use either the mounted_on_fileid or the fileid
6228 static void nfs_fixup_referral_attributes(struct nfs_fattr
*fattr
)
6230 if (!(((fattr
->valid
& NFS_ATTR_FATTR_MOUNTED_ON_FILEID
) ||
6231 (fattr
->valid
& NFS_ATTR_FATTR_FILEID
)) &&
6232 (fattr
->valid
& NFS_ATTR_FATTR_FSID
) &&
6233 (fattr
->valid
& NFS_ATTR_FATTR_V4_LOCATIONS
)))
6236 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
6237 NFS_ATTR_FATTR_NLINK
| NFS_ATTR_FATTR_V4_REFERRAL
;
6238 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
6242 static int _nfs4_proc_fs_locations(struct rpc_clnt
*client
, struct inode
*dir
,
6243 const struct qstr
*name
,
6244 struct nfs4_fs_locations
*fs_locations
,
6247 struct nfs_server
*server
= NFS_SERVER(dir
);
6249 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
6251 struct nfs4_fs_locations_arg args
= {
6252 .dir_fh
= NFS_FH(dir
),
6257 struct nfs4_fs_locations_res res
= {
6258 .fs_locations
= fs_locations
,
6260 struct rpc_message msg
= {
6261 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
6267 dprintk("%s: start\n", __func__
);
6269 /* Ask for the fileid of the absent filesystem if mounted_on_fileid
6270 * is not supported */
6271 if (NFS_SERVER(dir
)->attr_bitmask
[1] & FATTR4_WORD1_MOUNTED_ON_FILEID
)
6272 bitmask
[1] |= FATTR4_WORD1_MOUNTED_ON_FILEID
;
6274 bitmask
[0] |= FATTR4_WORD0_FILEID
;
6276 nfs_fattr_init(&fs_locations
->fattr
);
6277 fs_locations
->server
= server
;
6278 fs_locations
->nlocations
= 0;
6279 status
= nfs4_call_sync(client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
6280 dprintk("%s: returned status = %d\n", __func__
, status
);
6284 int nfs4_proc_fs_locations(struct rpc_clnt
*client
, struct inode
*dir
,
6285 const struct qstr
*name
,
6286 struct nfs4_fs_locations
*fs_locations
,
6289 struct nfs4_exception exception
= { };
6292 err
= _nfs4_proc_fs_locations(client
, dir
, name
,
6293 fs_locations
, page
);
6294 trace_nfs4_get_fs_locations(dir
, name
, err
);
6295 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
6297 } while (exception
.retry
);
6302 * This operation also signals the server that this client is
6303 * performing migration recovery. The server can stop returning
6304 * NFS4ERR_LEASE_MOVED to this client. A RENEW operation is
6305 * appended to this compound to identify the client ID which is
6306 * performing recovery.
6308 static int _nfs40_proc_get_locations(struct inode
*inode
,
6309 struct nfs4_fs_locations
*locations
,
6310 struct page
*page
, struct rpc_cred
*cred
)
6312 struct nfs_server
*server
= NFS_SERVER(inode
);
6313 struct rpc_clnt
*clnt
= server
->client
;
6315 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
6317 struct nfs4_fs_locations_arg args
= {
6318 .clientid
= server
->nfs_client
->cl_clientid
,
6319 .fh
= NFS_FH(inode
),
6322 .migration
= 1, /* skip LOOKUP */
6323 .renew
= 1, /* append RENEW */
6325 struct nfs4_fs_locations_res res
= {
6326 .fs_locations
= locations
,
6330 struct rpc_message msg
= {
6331 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
6336 unsigned long now
= jiffies
;
6339 nfs_fattr_init(&locations
->fattr
);
6340 locations
->server
= server
;
6341 locations
->nlocations
= 0;
6343 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6344 nfs4_set_sequence_privileged(&args
.seq_args
);
6345 status
= nfs4_call_sync_sequence(clnt
, server
, &msg
,
6346 &args
.seq_args
, &res
.seq_res
);
6350 renew_lease(server
, now
);
6354 #ifdef CONFIG_NFS_V4_1
6357 * This operation also signals the server that this client is
6358 * performing migration recovery. The server can stop asserting
6359 * SEQ4_STATUS_LEASE_MOVED for this client. The client ID
6360 * performing this operation is identified in the SEQUENCE
6361 * operation in this compound.
6363 * When the client supports GETATTR(fs_locations_info), it can
6364 * be plumbed in here.
6366 static int _nfs41_proc_get_locations(struct inode
*inode
,
6367 struct nfs4_fs_locations
*locations
,
6368 struct page
*page
, struct rpc_cred
*cred
)
6370 struct nfs_server
*server
= NFS_SERVER(inode
);
6371 struct rpc_clnt
*clnt
= server
->client
;
6373 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
6375 struct nfs4_fs_locations_arg args
= {
6376 .fh
= NFS_FH(inode
),
6379 .migration
= 1, /* skip LOOKUP */
6381 struct nfs4_fs_locations_res res
= {
6382 .fs_locations
= locations
,
6385 struct rpc_message msg
= {
6386 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
6393 nfs_fattr_init(&locations
->fattr
);
6394 locations
->server
= server
;
6395 locations
->nlocations
= 0;
6397 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6398 nfs4_set_sequence_privileged(&args
.seq_args
);
6399 status
= nfs4_call_sync_sequence(clnt
, server
, &msg
,
6400 &args
.seq_args
, &res
.seq_res
);
6401 if (status
== NFS4_OK
&&
6402 res
.seq_res
.sr_status_flags
& SEQ4_STATUS_LEASE_MOVED
)
6403 status
= -NFS4ERR_LEASE_MOVED
;
6407 #endif /* CONFIG_NFS_V4_1 */
6410 * nfs4_proc_get_locations - discover locations for a migrated FSID
6411 * @inode: inode on FSID that is migrating
6412 * @locations: result of query
6414 * @cred: credential to use for this operation
6416 * Returns NFS4_OK on success, a negative NFS4ERR status code if the
6417 * operation failed, or a negative errno if a local error occurred.
6419 * On success, "locations" is filled in, but if the server has
6420 * no locations information, NFS_ATTR_FATTR_V4_LOCATIONS is not
6423 * -NFS4ERR_LEASE_MOVED is returned if the server still has leases
6424 * from this client that require migration recovery.
6426 int nfs4_proc_get_locations(struct inode
*inode
,
6427 struct nfs4_fs_locations
*locations
,
6428 struct page
*page
, struct rpc_cred
*cred
)
6430 struct nfs_server
*server
= NFS_SERVER(inode
);
6431 struct nfs_client
*clp
= server
->nfs_client
;
6432 const struct nfs4_mig_recovery_ops
*ops
=
6433 clp
->cl_mvops
->mig_recovery_ops
;
6434 struct nfs4_exception exception
= { };
6437 dprintk("%s: FSID %llx:%llx on \"%s\"\n", __func__
,
6438 (unsigned long long)server
->fsid
.major
,
6439 (unsigned long long)server
->fsid
.minor
,
6441 nfs_display_fhandle(NFS_FH(inode
), __func__
);
6444 status
= ops
->get_locations(inode
, locations
, page
, cred
);
6445 if (status
!= -NFS4ERR_DELAY
)
6447 nfs4_handle_exception(server
, status
, &exception
);
6448 } while (exception
.retry
);
6453 * This operation also signals the server that this client is
6454 * performing "lease moved" recovery. The server can stop
6455 * returning NFS4ERR_LEASE_MOVED to this client. A RENEW operation
6456 * is appended to this compound to identify the client ID which is
6457 * performing recovery.
6459 static int _nfs40_proc_fsid_present(struct inode
*inode
, struct rpc_cred
*cred
)
6461 struct nfs_server
*server
= NFS_SERVER(inode
);
6462 struct nfs_client
*clp
= NFS_SERVER(inode
)->nfs_client
;
6463 struct rpc_clnt
*clnt
= server
->client
;
6464 struct nfs4_fsid_present_arg args
= {
6465 .fh
= NFS_FH(inode
),
6466 .clientid
= clp
->cl_clientid
,
6467 .renew
= 1, /* append RENEW */
6469 struct nfs4_fsid_present_res res
= {
6472 struct rpc_message msg
= {
6473 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSID_PRESENT
],
6478 unsigned long now
= jiffies
;
6481 res
.fh
= nfs_alloc_fhandle();
6485 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6486 nfs4_set_sequence_privileged(&args
.seq_args
);
6487 status
= nfs4_call_sync_sequence(clnt
, server
, &msg
,
6488 &args
.seq_args
, &res
.seq_res
);
6489 nfs_free_fhandle(res
.fh
);
6493 do_renew_lease(clp
, now
);
6497 #ifdef CONFIG_NFS_V4_1
6500 * This operation also signals the server that this client is
6501 * performing "lease moved" recovery. The server can stop asserting
6502 * SEQ4_STATUS_LEASE_MOVED for this client. The client ID performing
6503 * this operation is identified in the SEQUENCE operation in this
6506 static int _nfs41_proc_fsid_present(struct inode
*inode
, struct rpc_cred
*cred
)
6508 struct nfs_server
*server
= NFS_SERVER(inode
);
6509 struct rpc_clnt
*clnt
= server
->client
;
6510 struct nfs4_fsid_present_arg args
= {
6511 .fh
= NFS_FH(inode
),
6513 struct nfs4_fsid_present_res res
= {
6515 struct rpc_message msg
= {
6516 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSID_PRESENT
],
6523 res
.fh
= nfs_alloc_fhandle();
6527 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6528 nfs4_set_sequence_privileged(&args
.seq_args
);
6529 status
= nfs4_call_sync_sequence(clnt
, server
, &msg
,
6530 &args
.seq_args
, &res
.seq_res
);
6531 nfs_free_fhandle(res
.fh
);
6532 if (status
== NFS4_OK
&&
6533 res
.seq_res
.sr_status_flags
& SEQ4_STATUS_LEASE_MOVED
)
6534 status
= -NFS4ERR_LEASE_MOVED
;
6538 #endif /* CONFIG_NFS_V4_1 */
6541 * nfs4_proc_fsid_present - Is this FSID present or absent on server?
6542 * @inode: inode on FSID to check
6543 * @cred: credential to use for this operation
6545 * Server indicates whether the FSID is present, moved, or not
6546 * recognized. This operation is necessary to clear a LEASE_MOVED
6547 * condition for this client ID.
6549 * Returns NFS4_OK if the FSID is present on this server,
6550 * -NFS4ERR_MOVED if the FSID is no longer present, a negative
6551 * NFS4ERR code if some error occurred on the server, or a
6552 * negative errno if a local failure occurred.
6554 int nfs4_proc_fsid_present(struct inode
*inode
, struct rpc_cred
*cred
)
6556 struct nfs_server
*server
= NFS_SERVER(inode
);
6557 struct nfs_client
*clp
= server
->nfs_client
;
6558 const struct nfs4_mig_recovery_ops
*ops
=
6559 clp
->cl_mvops
->mig_recovery_ops
;
6560 struct nfs4_exception exception
= { };
6563 dprintk("%s: FSID %llx:%llx on \"%s\"\n", __func__
,
6564 (unsigned long long)server
->fsid
.major
,
6565 (unsigned long long)server
->fsid
.minor
,
6567 nfs_display_fhandle(NFS_FH(inode
), __func__
);
6570 status
= ops
->fsid_present(inode
, cred
);
6571 if (status
!= -NFS4ERR_DELAY
)
6573 nfs4_handle_exception(server
, status
, &exception
);
6574 } while (exception
.retry
);
6579 * If 'use_integrity' is true and the state managment nfs_client
6580 * cl_rpcclient is using krb5i/p, use the integrity protected cl_rpcclient
6581 * and the machine credential as per RFC3530bis and RFC5661 Security
6582 * Considerations sections. Otherwise, just use the user cred with the
6583 * filesystem's rpc_client.
6585 static int _nfs4_proc_secinfo(struct inode
*dir
, const struct qstr
*name
, struct nfs4_secinfo_flavors
*flavors
, bool use_integrity
)
6588 struct nfs4_secinfo_arg args
= {
6589 .dir_fh
= NFS_FH(dir
),
6592 struct nfs4_secinfo_res res
= {
6595 struct rpc_message msg
= {
6596 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SECINFO
],
6600 struct rpc_clnt
*clnt
= NFS_SERVER(dir
)->client
;
6601 struct rpc_cred
*cred
= NULL
;
6603 if (use_integrity
) {
6604 clnt
= NFS_SERVER(dir
)->nfs_client
->cl_rpcclient
;
6605 cred
= nfs4_get_clid_cred(NFS_SERVER(dir
)->nfs_client
);
6606 msg
.rpc_cred
= cred
;
6609 dprintk("NFS call secinfo %s\n", name
->name
);
6611 nfs4_state_protect(NFS_SERVER(dir
)->nfs_client
,
6612 NFS_SP4_MACH_CRED_SECINFO
, &clnt
, &msg
);
6614 status
= nfs4_call_sync(clnt
, NFS_SERVER(dir
), &msg
, &args
.seq_args
,
6616 dprintk("NFS reply secinfo: %d\n", status
);
6624 int nfs4_proc_secinfo(struct inode
*dir
, const struct qstr
*name
,
6625 struct nfs4_secinfo_flavors
*flavors
)
6627 struct nfs4_exception exception
= { };
6630 err
= -NFS4ERR_WRONGSEC
;
6632 /* try to use integrity protection with machine cred */
6633 if (_nfs4_is_integrity_protected(NFS_SERVER(dir
)->nfs_client
))
6634 err
= _nfs4_proc_secinfo(dir
, name
, flavors
, true);
6637 * if unable to use integrity protection, or SECINFO with
6638 * integrity protection returns NFS4ERR_WRONGSEC (which is
6639 * disallowed by spec, but exists in deployed servers) use
6640 * the current filesystem's rpc_client and the user cred.
6642 if (err
== -NFS4ERR_WRONGSEC
)
6643 err
= _nfs4_proc_secinfo(dir
, name
, flavors
, false);
6645 trace_nfs4_secinfo(dir
, name
, err
);
6646 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
6648 } while (exception
.retry
);
6652 #ifdef CONFIG_NFS_V4_1
6654 * Check the exchange flags returned by the server for invalid flags, having
6655 * both PNFS and NON_PNFS flags set, and not having one of NON_PNFS, PNFS, or
6658 static int nfs4_check_cl_exchange_flags(u32 flags
)
6660 if (flags
& ~EXCHGID4_FLAG_MASK_R
)
6662 if ((flags
& EXCHGID4_FLAG_USE_PNFS_MDS
) &&
6663 (flags
& EXCHGID4_FLAG_USE_NON_PNFS
))
6665 if (!(flags
& (EXCHGID4_FLAG_MASK_PNFS
)))
6669 return -NFS4ERR_INVAL
;
6673 nfs41_same_server_scope(struct nfs41_server_scope
*a
,
6674 struct nfs41_server_scope
*b
)
6676 if (a
->server_scope_sz
== b
->server_scope_sz
&&
6677 memcmp(a
->server_scope
, b
->server_scope
, a
->server_scope_sz
) == 0)
6684 * nfs4_proc_bind_conn_to_session()
6686 * The 4.1 client currently uses the same TCP connection for the
6687 * fore and backchannel.
6689 int nfs4_proc_bind_conn_to_session(struct nfs_client
*clp
, struct rpc_cred
*cred
)
6692 struct nfs41_bind_conn_to_session_args args
= {
6694 .dir
= NFS4_CDFC4_FORE_OR_BOTH
,
6696 struct nfs41_bind_conn_to_session_res res
;
6697 struct rpc_message msg
= {
6699 &nfs4_procedures
[NFSPROC4_CLNT_BIND_CONN_TO_SESSION
],
6705 dprintk("--> %s\n", __func__
);
6707 nfs4_copy_sessionid(&args
.sessionid
, &clp
->cl_session
->sess_id
);
6708 if (!(clp
->cl_session
->flags
& SESSION4_BACK_CHAN
))
6709 args
.dir
= NFS4_CDFC4_FORE
;
6711 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
6712 trace_nfs4_bind_conn_to_session(clp
, status
);
6714 if (memcmp(res
.sessionid
.data
,
6715 clp
->cl_session
->sess_id
.data
, NFS4_MAX_SESSIONID_LEN
)) {
6716 dprintk("NFS: %s: Session ID mismatch\n", __func__
);
6720 if ((res
.dir
& args
.dir
) != res
.dir
|| res
.dir
== 0) {
6721 dprintk("NFS: %s: Unexpected direction from server\n",
6726 if (res
.use_conn_in_rdma_mode
!= args
.use_conn_in_rdma_mode
) {
6727 dprintk("NFS: %s: Server returned RDMA mode = true\n",
6734 dprintk("<-- %s status= %d\n", __func__
, status
);
6739 * Minimum set of SP4_MACH_CRED operations from RFC 5661 in the enforce map
6740 * and operations we'd like to see to enable certain features in the allow map
6742 static const struct nfs41_state_protection nfs4_sp4_mach_cred_request
= {
6743 .how
= SP4_MACH_CRED
,
6744 .enforce
.u
.words
= {
6745 [1] = 1 << (OP_BIND_CONN_TO_SESSION
- 32) |
6746 1 << (OP_EXCHANGE_ID
- 32) |
6747 1 << (OP_CREATE_SESSION
- 32) |
6748 1 << (OP_DESTROY_SESSION
- 32) |
6749 1 << (OP_DESTROY_CLIENTID
- 32)
6752 [0] = 1 << (OP_CLOSE
) |
6755 [1] = 1 << (OP_SECINFO
- 32) |
6756 1 << (OP_SECINFO_NO_NAME
- 32) |
6757 1 << (OP_TEST_STATEID
- 32) |
6758 1 << (OP_FREE_STATEID
- 32) |
6759 1 << (OP_WRITE
- 32)
6764 * Select the state protection mode for client `clp' given the server results
6765 * from exchange_id in `sp'.
6767 * Returns 0 on success, negative errno otherwise.
6769 static int nfs4_sp4_select_mode(struct nfs_client
*clp
,
6770 struct nfs41_state_protection
*sp
)
6772 static const u32 supported_enforce
[NFS4_OP_MAP_NUM_WORDS
] = {
6773 [1] = 1 << (OP_BIND_CONN_TO_SESSION
- 32) |
6774 1 << (OP_EXCHANGE_ID
- 32) |
6775 1 << (OP_CREATE_SESSION
- 32) |
6776 1 << (OP_DESTROY_SESSION
- 32) |
6777 1 << (OP_DESTROY_CLIENTID
- 32)
6781 if (sp
->how
== SP4_MACH_CRED
) {
6782 /* Print state protect result */
6783 dfprintk(MOUNT
, "Server SP4_MACH_CRED support:\n");
6784 for (i
= 0; i
<= LAST_NFS4_OP
; i
++) {
6785 if (test_bit(i
, sp
->enforce
.u
.longs
))
6786 dfprintk(MOUNT
, " enforce op %d\n", i
);
6787 if (test_bit(i
, sp
->allow
.u
.longs
))
6788 dfprintk(MOUNT
, " allow op %d\n", i
);
6791 /* make sure nothing is on enforce list that isn't supported */
6792 for (i
= 0; i
< NFS4_OP_MAP_NUM_WORDS
; i
++) {
6793 if (sp
->enforce
.u
.words
[i
] & ~supported_enforce
[i
]) {
6794 dfprintk(MOUNT
, "sp4_mach_cred: disabled\n");
6800 * Minimal mode - state operations are allowed to use machine
6801 * credential. Note this already happens by default, so the
6802 * client doesn't have to do anything more than the negotiation.
6804 * NOTE: we don't care if EXCHANGE_ID is in the list -
6805 * we're already using the machine cred for exchange_id
6806 * and will never use a different cred.
6808 if (test_bit(OP_BIND_CONN_TO_SESSION
, sp
->enforce
.u
.longs
) &&
6809 test_bit(OP_CREATE_SESSION
, sp
->enforce
.u
.longs
) &&
6810 test_bit(OP_DESTROY_SESSION
, sp
->enforce
.u
.longs
) &&
6811 test_bit(OP_DESTROY_CLIENTID
, sp
->enforce
.u
.longs
)) {
6812 dfprintk(MOUNT
, "sp4_mach_cred:\n");
6813 dfprintk(MOUNT
, " minimal mode enabled\n");
6814 set_bit(NFS_SP4_MACH_CRED_MINIMAL
, &clp
->cl_sp4_flags
);
6816 dfprintk(MOUNT
, "sp4_mach_cred: disabled\n");
6820 if (test_bit(OP_CLOSE
, sp
->allow
.u
.longs
) &&
6821 test_bit(OP_LOCKU
, sp
->allow
.u
.longs
)) {
6822 dfprintk(MOUNT
, " cleanup mode enabled\n");
6823 set_bit(NFS_SP4_MACH_CRED_CLEANUP
, &clp
->cl_sp4_flags
);
6826 if (test_bit(OP_SECINFO
, sp
->allow
.u
.longs
) &&
6827 test_bit(OP_SECINFO_NO_NAME
, sp
->allow
.u
.longs
)) {
6828 dfprintk(MOUNT
, " secinfo mode enabled\n");
6829 set_bit(NFS_SP4_MACH_CRED_SECINFO
, &clp
->cl_sp4_flags
);
6832 if (test_bit(OP_TEST_STATEID
, sp
->allow
.u
.longs
) &&
6833 test_bit(OP_FREE_STATEID
, sp
->allow
.u
.longs
)) {
6834 dfprintk(MOUNT
, " stateid mode enabled\n");
6835 set_bit(NFS_SP4_MACH_CRED_STATEID
, &clp
->cl_sp4_flags
);
6838 if (test_bit(OP_WRITE
, sp
->allow
.u
.longs
)) {
6839 dfprintk(MOUNT
, " write mode enabled\n");
6840 set_bit(NFS_SP4_MACH_CRED_WRITE
, &clp
->cl_sp4_flags
);
6843 if (test_bit(OP_COMMIT
, sp
->allow
.u
.longs
)) {
6844 dfprintk(MOUNT
, " commit mode enabled\n");
6845 set_bit(NFS_SP4_MACH_CRED_COMMIT
, &clp
->cl_sp4_flags
);
6853 * _nfs4_proc_exchange_id()
6855 * Wrapper for EXCHANGE_ID operation.
6857 static int _nfs4_proc_exchange_id(struct nfs_client
*clp
, struct rpc_cred
*cred
,
6860 nfs4_verifier verifier
;
6861 struct nfs41_exchange_id_args args
= {
6862 .verifier
= &verifier
,
6864 #ifdef CONFIG_NFS_V4_1_MIGRATION
6865 .flags
= EXCHGID4_FLAG_SUPP_MOVED_REFER
|
6866 EXCHGID4_FLAG_BIND_PRINC_STATEID
|
6867 EXCHGID4_FLAG_SUPP_MOVED_MIGR
,
6869 .flags
= EXCHGID4_FLAG_SUPP_MOVED_REFER
|
6870 EXCHGID4_FLAG_BIND_PRINC_STATEID
,
6873 struct nfs41_exchange_id_res res
= {
6877 struct rpc_message msg
= {
6878 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_EXCHANGE_ID
],
6884 nfs4_init_boot_verifier(clp
, &verifier
);
6885 args
.id_len
= nfs4_init_uniform_client_string(clp
, args
.id
,
6887 if (!clp
->cl_owner_id
) {
6892 dprintk("NFS call exchange_id auth=%s, '%s'\n",
6893 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
6896 res
.server_owner
= kzalloc(sizeof(struct nfs41_server_owner
),
6898 if (unlikely(res
.server_owner
== NULL
)) {
6903 res
.server_scope
= kzalloc(sizeof(struct nfs41_server_scope
),
6905 if (unlikely(res
.server_scope
== NULL
)) {
6907 goto out_server_owner
;
6910 res
.impl_id
= kzalloc(sizeof(struct nfs41_impl_id
), GFP_NOFS
);
6911 if (unlikely(res
.impl_id
== NULL
)) {
6913 goto out_server_scope
;
6918 args
.state_protect
.how
= SP4_NONE
;
6922 args
.state_protect
= nfs4_sp4_mach_cred_request
;
6929 goto out_server_scope
;
6932 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
6933 trace_nfs4_exchange_id(clp
, status
);
6935 status
= nfs4_check_cl_exchange_flags(res
.flags
);
6938 status
= nfs4_sp4_select_mode(clp
, &res
.state_protect
);
6941 clp
->cl_clientid
= res
.clientid
;
6942 clp
->cl_exchange_flags
= res
.flags
;
6943 /* Client ID is not confirmed */
6944 if (!(res
.flags
& EXCHGID4_FLAG_CONFIRMED_R
)) {
6945 clear_bit(NFS4_SESSION_ESTABLISHED
,
6946 &clp
->cl_session
->session_state
);
6947 clp
->cl_seqid
= res
.seqid
;
6950 kfree(clp
->cl_serverowner
);
6951 clp
->cl_serverowner
= res
.server_owner
;
6952 res
.server_owner
= NULL
;
6954 /* use the most recent implementation id */
6955 kfree(clp
->cl_implid
);
6956 clp
->cl_implid
= res
.impl_id
;
6958 if (clp
->cl_serverscope
!= NULL
&&
6959 !nfs41_same_server_scope(clp
->cl_serverscope
,
6960 res
.server_scope
)) {
6961 dprintk("%s: server_scope mismatch detected\n",
6963 set_bit(NFS4CLNT_SERVER_SCOPE_MISMATCH
, &clp
->cl_state
);
6964 kfree(clp
->cl_serverscope
);
6965 clp
->cl_serverscope
= NULL
;
6968 if (clp
->cl_serverscope
== NULL
) {
6969 clp
->cl_serverscope
= res
.server_scope
;
6976 kfree(res
.server_owner
);
6978 kfree(res
.server_scope
);
6980 if (clp
->cl_implid
!= NULL
)
6981 dprintk("NFS reply exchange_id: Server Implementation ID: "
6982 "domain: %s, name: %s, date: %llu,%u\n",
6983 clp
->cl_implid
->domain
, clp
->cl_implid
->name
,
6984 clp
->cl_implid
->date
.seconds
,
6985 clp
->cl_implid
->date
.nseconds
);
6986 dprintk("NFS reply exchange_id: %d\n", status
);
6991 * nfs4_proc_exchange_id()
6993 * Returns zero, a negative errno, or a negative NFS4ERR status code.
6995 * Since the clientid has expired, all compounds using sessions
6996 * associated with the stale clientid will be returning
6997 * NFS4ERR_BADSESSION in the sequence operation, and will therefore
6998 * be in some phase of session reset.
7000 * Will attempt to negotiate SP4_MACH_CRED if krb5i / krb5p auth is used.
7002 int nfs4_proc_exchange_id(struct nfs_client
*clp
, struct rpc_cred
*cred
)
7004 rpc_authflavor_t authflavor
= clp
->cl_rpcclient
->cl_auth
->au_flavor
;
7007 /* try SP4_MACH_CRED if krb5i/p */
7008 if (authflavor
== RPC_AUTH_GSS_KRB5I
||
7009 authflavor
== RPC_AUTH_GSS_KRB5P
) {
7010 status
= _nfs4_proc_exchange_id(clp
, cred
, SP4_MACH_CRED
);
7016 return _nfs4_proc_exchange_id(clp
, cred
, SP4_NONE
);
7019 static int _nfs4_proc_destroy_clientid(struct nfs_client
*clp
,
7020 struct rpc_cred
*cred
)
7022 struct rpc_message msg
= {
7023 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DESTROY_CLIENTID
],
7029 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
7030 trace_nfs4_destroy_clientid(clp
, status
);
7032 dprintk("NFS: Got error %d from the server %s on "
7033 "DESTROY_CLIENTID.", status
, clp
->cl_hostname
);
7037 static int nfs4_proc_destroy_clientid(struct nfs_client
*clp
,
7038 struct rpc_cred
*cred
)
7043 for (loop
= NFS4_MAX_LOOP_ON_RECOVER
; loop
!= 0; loop
--) {
7044 ret
= _nfs4_proc_destroy_clientid(clp
, cred
);
7046 case -NFS4ERR_DELAY
:
7047 case -NFS4ERR_CLIENTID_BUSY
:
7057 int nfs4_destroy_clientid(struct nfs_client
*clp
)
7059 struct rpc_cred
*cred
;
7062 if (clp
->cl_mvops
->minor_version
< 1)
7064 if (clp
->cl_exchange_flags
== 0)
7066 if (clp
->cl_preserve_clid
)
7068 cred
= nfs4_get_clid_cred(clp
);
7069 ret
= nfs4_proc_destroy_clientid(clp
, cred
);
7074 case -NFS4ERR_STALE_CLIENTID
:
7075 clp
->cl_exchange_flags
= 0;
7081 struct nfs4_get_lease_time_data
{
7082 struct nfs4_get_lease_time_args
*args
;
7083 struct nfs4_get_lease_time_res
*res
;
7084 struct nfs_client
*clp
;
7087 static void nfs4_get_lease_time_prepare(struct rpc_task
*task
,
7090 struct nfs4_get_lease_time_data
*data
=
7091 (struct nfs4_get_lease_time_data
*)calldata
;
7093 dprintk("--> %s\n", __func__
);
7094 /* just setup sequence, do not trigger session recovery
7095 since we're invoked within one */
7096 nfs41_setup_sequence(data
->clp
->cl_session
,
7097 &data
->args
->la_seq_args
,
7098 &data
->res
->lr_seq_res
,
7100 dprintk("<-- %s\n", __func__
);
7104 * Called from nfs4_state_manager thread for session setup, so don't recover
7105 * from sequence operation or clientid errors.
7107 static void nfs4_get_lease_time_done(struct rpc_task
*task
, void *calldata
)
7109 struct nfs4_get_lease_time_data
*data
=
7110 (struct nfs4_get_lease_time_data
*)calldata
;
7112 dprintk("--> %s\n", __func__
);
7113 if (!nfs41_sequence_done(task
, &data
->res
->lr_seq_res
))
7115 switch (task
->tk_status
) {
7116 case -NFS4ERR_DELAY
:
7117 case -NFS4ERR_GRACE
:
7118 dprintk("%s Retry: tk_status %d\n", __func__
, task
->tk_status
);
7119 rpc_delay(task
, NFS4_POLL_RETRY_MIN
);
7120 task
->tk_status
= 0;
7122 case -NFS4ERR_RETRY_UNCACHED_REP
:
7123 rpc_restart_call_prepare(task
);
7126 dprintk("<-- %s\n", __func__
);
7129 static const struct rpc_call_ops nfs4_get_lease_time_ops
= {
7130 .rpc_call_prepare
= nfs4_get_lease_time_prepare
,
7131 .rpc_call_done
= nfs4_get_lease_time_done
,
7134 int nfs4_proc_get_lease_time(struct nfs_client
*clp
, struct nfs_fsinfo
*fsinfo
)
7136 struct rpc_task
*task
;
7137 struct nfs4_get_lease_time_args args
;
7138 struct nfs4_get_lease_time_res res
= {
7139 .lr_fsinfo
= fsinfo
,
7141 struct nfs4_get_lease_time_data data
= {
7146 struct rpc_message msg
= {
7147 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GET_LEASE_TIME
],
7151 struct rpc_task_setup task_setup
= {
7152 .rpc_client
= clp
->cl_rpcclient
,
7153 .rpc_message
= &msg
,
7154 .callback_ops
= &nfs4_get_lease_time_ops
,
7155 .callback_data
= &data
,
7156 .flags
= RPC_TASK_TIMEOUT
,
7160 nfs4_init_sequence(&args
.la_seq_args
, &res
.lr_seq_res
, 0);
7161 nfs4_set_sequence_privileged(&args
.la_seq_args
);
7162 dprintk("--> %s\n", __func__
);
7163 task
= rpc_run_task(&task_setup
);
7166 status
= PTR_ERR(task
);
7168 status
= task
->tk_status
;
7171 dprintk("<-- %s return %d\n", __func__
, status
);
7177 * Initialize the values to be used by the client in CREATE_SESSION
7178 * If nfs4_init_session set the fore channel request and response sizes,
7181 * Set the back channel max_resp_sz_cached to zero to force the client to
7182 * always set csa_cachethis to FALSE because the current implementation
7183 * of the back channel DRC only supports caching the CB_SEQUENCE operation.
7185 static void nfs4_init_channel_attrs(struct nfs41_create_session_args
*args
)
7187 unsigned int max_rqst_sz
, max_resp_sz
;
7189 max_rqst_sz
= NFS_MAX_FILE_IO_SIZE
+ nfs41_maxwrite_overhead
;
7190 max_resp_sz
= NFS_MAX_FILE_IO_SIZE
+ nfs41_maxread_overhead
;
7192 /* Fore channel attributes */
7193 args
->fc_attrs
.max_rqst_sz
= max_rqst_sz
;
7194 args
->fc_attrs
.max_resp_sz
= max_resp_sz
;
7195 args
->fc_attrs
.max_ops
= NFS4_MAX_OPS
;
7196 args
->fc_attrs
.max_reqs
= max_session_slots
;
7198 dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u "
7199 "max_ops=%u max_reqs=%u\n",
7201 args
->fc_attrs
.max_rqst_sz
, args
->fc_attrs
.max_resp_sz
,
7202 args
->fc_attrs
.max_ops
, args
->fc_attrs
.max_reqs
);
7204 /* Back channel attributes */
7205 args
->bc_attrs
.max_rqst_sz
= PAGE_SIZE
;
7206 args
->bc_attrs
.max_resp_sz
= PAGE_SIZE
;
7207 args
->bc_attrs
.max_resp_sz_cached
= 0;
7208 args
->bc_attrs
.max_ops
= NFS4_MAX_BACK_CHANNEL_OPS
;
7209 args
->bc_attrs
.max_reqs
= 1;
7211 dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u "
7212 "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n",
7214 args
->bc_attrs
.max_rqst_sz
, args
->bc_attrs
.max_resp_sz
,
7215 args
->bc_attrs
.max_resp_sz_cached
, args
->bc_attrs
.max_ops
,
7216 args
->bc_attrs
.max_reqs
);
7219 static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args
*args
,
7220 struct nfs41_create_session_res
*res
)
7222 struct nfs4_channel_attrs
*sent
= &args
->fc_attrs
;
7223 struct nfs4_channel_attrs
*rcvd
= &res
->fc_attrs
;
7225 if (rcvd
->max_resp_sz
> sent
->max_resp_sz
)
7228 * Our requested max_ops is the minimum we need; we're not
7229 * prepared to break up compounds into smaller pieces than that.
7230 * So, no point even trying to continue if the server won't
7233 if (rcvd
->max_ops
< sent
->max_ops
)
7235 if (rcvd
->max_reqs
== 0)
7237 if (rcvd
->max_reqs
> NFS4_MAX_SLOT_TABLE
)
7238 rcvd
->max_reqs
= NFS4_MAX_SLOT_TABLE
;
7242 static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args
*args
,
7243 struct nfs41_create_session_res
*res
)
7245 struct nfs4_channel_attrs
*sent
= &args
->bc_attrs
;
7246 struct nfs4_channel_attrs
*rcvd
= &res
->bc_attrs
;
7248 if (!(res
->flags
& SESSION4_BACK_CHAN
))
7250 if (rcvd
->max_rqst_sz
> sent
->max_rqst_sz
)
7252 if (rcvd
->max_resp_sz
< sent
->max_resp_sz
)
7254 if (rcvd
->max_resp_sz_cached
> sent
->max_resp_sz_cached
)
7256 /* These would render the backchannel useless: */
7257 if (rcvd
->max_ops
!= sent
->max_ops
)
7259 if (rcvd
->max_reqs
!= sent
->max_reqs
)
7265 static int nfs4_verify_channel_attrs(struct nfs41_create_session_args
*args
,
7266 struct nfs41_create_session_res
*res
)
7270 ret
= nfs4_verify_fore_channel_attrs(args
, res
);
7273 return nfs4_verify_back_channel_attrs(args
, res
);
7276 static void nfs4_update_session(struct nfs4_session
*session
,
7277 struct nfs41_create_session_res
*res
)
7279 nfs4_copy_sessionid(&session
->sess_id
, &res
->sessionid
);
7280 /* Mark client id and session as being confirmed */
7281 session
->clp
->cl_exchange_flags
|= EXCHGID4_FLAG_CONFIRMED_R
;
7282 set_bit(NFS4_SESSION_ESTABLISHED
, &session
->session_state
);
7283 session
->flags
= res
->flags
;
7284 memcpy(&session
->fc_attrs
, &res
->fc_attrs
, sizeof(session
->fc_attrs
));
7285 if (res
->flags
& SESSION4_BACK_CHAN
)
7286 memcpy(&session
->bc_attrs
, &res
->bc_attrs
,
7287 sizeof(session
->bc_attrs
));
7290 static int _nfs4_proc_create_session(struct nfs_client
*clp
,
7291 struct rpc_cred
*cred
)
7293 struct nfs4_session
*session
= clp
->cl_session
;
7294 struct nfs41_create_session_args args
= {
7296 .clientid
= clp
->cl_clientid
,
7297 .seqid
= clp
->cl_seqid
,
7298 .cb_program
= NFS4_CALLBACK
,
7300 struct nfs41_create_session_res res
;
7302 struct rpc_message msg
= {
7303 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE_SESSION
],
7310 nfs4_init_channel_attrs(&args
);
7311 args
.flags
= (SESSION4_PERSIST
| SESSION4_BACK_CHAN
);
7313 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
7314 trace_nfs4_create_session(clp
, status
);
7317 /* Verify the session's negotiated channel_attrs values */
7318 status
= nfs4_verify_channel_attrs(&args
, &res
);
7319 /* Increment the clientid slot sequence id */
7320 if (clp
->cl_seqid
== res
.seqid
)
7324 nfs4_update_session(session
, &res
);
7331 * Issues a CREATE_SESSION operation to the server.
7332 * It is the responsibility of the caller to verify the session is
7333 * expired before calling this routine.
7335 int nfs4_proc_create_session(struct nfs_client
*clp
, struct rpc_cred
*cred
)
7339 struct nfs4_session
*session
= clp
->cl_session
;
7341 dprintk("--> %s clp=%p session=%p\n", __func__
, clp
, session
);
7343 status
= _nfs4_proc_create_session(clp
, cred
);
7347 /* Init or reset the session slot tables */
7348 status
= nfs4_setup_session_slot_tables(session
);
7349 dprintk("slot table setup returned %d\n", status
);
7353 ptr
= (unsigned *)&session
->sess_id
.data
[0];
7354 dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__
,
7355 clp
->cl_seqid
, ptr
[0], ptr
[1], ptr
[2], ptr
[3]);
7357 dprintk("<-- %s\n", __func__
);
7362 * Issue the over-the-wire RPC DESTROY_SESSION.
7363 * The caller must serialize access to this routine.
7365 int nfs4_proc_destroy_session(struct nfs4_session
*session
,
7366 struct rpc_cred
*cred
)
7368 struct rpc_message msg
= {
7369 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DESTROY_SESSION
],
7370 .rpc_argp
= session
,
7375 dprintk("--> nfs4_proc_destroy_session\n");
7377 /* session is still being setup */
7378 if (!test_and_clear_bit(NFS4_SESSION_ESTABLISHED
, &session
->session_state
))
7381 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
7382 trace_nfs4_destroy_session(session
->clp
, status
);
7385 dprintk("NFS: Got error %d from the server on DESTROY_SESSION. "
7386 "Session has been destroyed regardless...\n", status
);
7388 dprintk("<-- nfs4_proc_destroy_session\n");
7393 * Renew the cl_session lease.
7395 struct nfs4_sequence_data
{
7396 struct nfs_client
*clp
;
7397 struct nfs4_sequence_args args
;
7398 struct nfs4_sequence_res res
;
7401 static void nfs41_sequence_release(void *data
)
7403 struct nfs4_sequence_data
*calldata
= data
;
7404 struct nfs_client
*clp
= calldata
->clp
;
7406 if (atomic_read(&clp
->cl_count
) > 1)
7407 nfs4_schedule_state_renewal(clp
);
7408 nfs_put_client(clp
);
7412 static int nfs41_sequence_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
7414 switch(task
->tk_status
) {
7415 case -NFS4ERR_DELAY
:
7416 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
7419 nfs4_schedule_lease_recovery(clp
);
7424 static void nfs41_sequence_call_done(struct rpc_task
*task
, void *data
)
7426 struct nfs4_sequence_data
*calldata
= data
;
7427 struct nfs_client
*clp
= calldata
->clp
;
7429 if (!nfs41_sequence_done(task
, task
->tk_msg
.rpc_resp
))
7432 trace_nfs4_sequence(clp
, task
->tk_status
);
7433 if (task
->tk_status
< 0) {
7434 dprintk("%s ERROR %d\n", __func__
, task
->tk_status
);
7435 if (atomic_read(&clp
->cl_count
) == 1)
7438 if (nfs41_sequence_handle_errors(task
, clp
) == -EAGAIN
) {
7439 rpc_restart_call_prepare(task
);
7443 dprintk("%s rpc_cred %p\n", __func__
, task
->tk_msg
.rpc_cred
);
7445 dprintk("<-- %s\n", __func__
);
7448 static void nfs41_sequence_prepare(struct rpc_task
*task
, void *data
)
7450 struct nfs4_sequence_data
*calldata
= data
;
7451 struct nfs_client
*clp
= calldata
->clp
;
7452 struct nfs4_sequence_args
*args
;
7453 struct nfs4_sequence_res
*res
;
7455 args
= task
->tk_msg
.rpc_argp
;
7456 res
= task
->tk_msg
.rpc_resp
;
7458 nfs41_setup_sequence(clp
->cl_session
, args
, res
, task
);
7461 static const struct rpc_call_ops nfs41_sequence_ops
= {
7462 .rpc_call_done
= nfs41_sequence_call_done
,
7463 .rpc_call_prepare
= nfs41_sequence_prepare
,
7464 .rpc_release
= nfs41_sequence_release
,
7467 static struct rpc_task
*_nfs41_proc_sequence(struct nfs_client
*clp
,
7468 struct rpc_cred
*cred
,
7471 struct nfs4_sequence_data
*calldata
;
7472 struct rpc_message msg
= {
7473 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SEQUENCE
],
7476 struct rpc_task_setup task_setup_data
= {
7477 .rpc_client
= clp
->cl_rpcclient
,
7478 .rpc_message
= &msg
,
7479 .callback_ops
= &nfs41_sequence_ops
,
7480 .flags
= RPC_TASK_ASYNC
| RPC_TASK_TIMEOUT
,
7483 if (!atomic_inc_not_zero(&clp
->cl_count
))
7484 return ERR_PTR(-EIO
);
7485 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
7486 if (calldata
== NULL
) {
7487 nfs_put_client(clp
);
7488 return ERR_PTR(-ENOMEM
);
7490 nfs4_init_sequence(&calldata
->args
, &calldata
->res
, 0);
7492 nfs4_set_sequence_privileged(&calldata
->args
);
7493 msg
.rpc_argp
= &calldata
->args
;
7494 msg
.rpc_resp
= &calldata
->res
;
7495 calldata
->clp
= clp
;
7496 task_setup_data
.callback_data
= calldata
;
7498 return rpc_run_task(&task_setup_data
);
7501 static int nfs41_proc_async_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
, unsigned renew_flags
)
7503 struct rpc_task
*task
;
7506 if ((renew_flags
& NFS4_RENEW_TIMEOUT
) == 0)
7508 task
= _nfs41_proc_sequence(clp
, cred
, false);
7510 ret
= PTR_ERR(task
);
7512 rpc_put_task_async(task
);
7513 dprintk("<-- %s status=%d\n", __func__
, ret
);
7517 static int nfs4_proc_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
)
7519 struct rpc_task
*task
;
7522 task
= _nfs41_proc_sequence(clp
, cred
, true);
7524 ret
= PTR_ERR(task
);
7527 ret
= rpc_wait_for_completion_task(task
);
7529 struct nfs4_sequence_res
*res
= task
->tk_msg
.rpc_resp
;
7531 if (task
->tk_status
== 0)
7532 nfs41_handle_sequence_flag_errors(clp
, res
->sr_status_flags
);
7533 ret
= task
->tk_status
;
7537 dprintk("<-- %s status=%d\n", __func__
, ret
);
7541 struct nfs4_reclaim_complete_data
{
7542 struct nfs_client
*clp
;
7543 struct nfs41_reclaim_complete_args arg
;
7544 struct nfs41_reclaim_complete_res res
;
7547 static void nfs4_reclaim_complete_prepare(struct rpc_task
*task
, void *data
)
7549 struct nfs4_reclaim_complete_data
*calldata
= data
;
7551 nfs41_setup_sequence(calldata
->clp
->cl_session
,
7552 &calldata
->arg
.seq_args
,
7553 &calldata
->res
.seq_res
,
7557 static int nfs41_reclaim_complete_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
7559 switch(task
->tk_status
) {
7561 case -NFS4ERR_COMPLETE_ALREADY
:
7562 case -NFS4ERR_WRONG_CRED
: /* What to do here? */
7564 case -NFS4ERR_DELAY
:
7565 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
7567 case -NFS4ERR_RETRY_UNCACHED_REP
:
7570 nfs4_schedule_lease_recovery(clp
);
7575 static void nfs4_reclaim_complete_done(struct rpc_task
*task
, void *data
)
7577 struct nfs4_reclaim_complete_data
*calldata
= data
;
7578 struct nfs_client
*clp
= calldata
->clp
;
7579 struct nfs4_sequence_res
*res
= &calldata
->res
.seq_res
;
7581 dprintk("--> %s\n", __func__
);
7582 if (!nfs41_sequence_done(task
, res
))
7585 trace_nfs4_reclaim_complete(clp
, task
->tk_status
);
7586 if (nfs41_reclaim_complete_handle_errors(task
, clp
) == -EAGAIN
) {
7587 rpc_restart_call_prepare(task
);
7590 dprintk("<-- %s\n", __func__
);
7593 static void nfs4_free_reclaim_complete_data(void *data
)
7595 struct nfs4_reclaim_complete_data
*calldata
= data
;
7600 static const struct rpc_call_ops nfs4_reclaim_complete_call_ops
= {
7601 .rpc_call_prepare
= nfs4_reclaim_complete_prepare
,
7602 .rpc_call_done
= nfs4_reclaim_complete_done
,
7603 .rpc_release
= nfs4_free_reclaim_complete_data
,
7607 * Issue a global reclaim complete.
7609 static int nfs41_proc_reclaim_complete(struct nfs_client
*clp
,
7610 struct rpc_cred
*cred
)
7612 struct nfs4_reclaim_complete_data
*calldata
;
7613 struct rpc_task
*task
;
7614 struct rpc_message msg
= {
7615 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RECLAIM_COMPLETE
],
7618 struct rpc_task_setup task_setup_data
= {
7619 .rpc_client
= clp
->cl_rpcclient
,
7620 .rpc_message
= &msg
,
7621 .callback_ops
= &nfs4_reclaim_complete_call_ops
,
7622 .flags
= RPC_TASK_ASYNC
,
7624 int status
= -ENOMEM
;
7626 dprintk("--> %s\n", __func__
);
7627 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
7628 if (calldata
== NULL
)
7630 calldata
->clp
= clp
;
7631 calldata
->arg
.one_fs
= 0;
7633 nfs4_init_sequence(&calldata
->arg
.seq_args
, &calldata
->res
.seq_res
, 0);
7634 nfs4_set_sequence_privileged(&calldata
->arg
.seq_args
);
7635 msg
.rpc_argp
= &calldata
->arg
;
7636 msg
.rpc_resp
= &calldata
->res
;
7637 task_setup_data
.callback_data
= calldata
;
7638 task
= rpc_run_task(&task_setup_data
);
7640 status
= PTR_ERR(task
);
7643 status
= nfs4_wait_for_completion_rpc_task(task
);
7645 status
= task
->tk_status
;
7649 dprintk("<-- %s status=%d\n", __func__
, status
);
7654 nfs4_layoutget_prepare(struct rpc_task
*task
, void *calldata
)
7656 struct nfs4_layoutget
*lgp
= calldata
;
7657 struct nfs_server
*server
= NFS_SERVER(lgp
->args
.inode
);
7658 struct nfs4_session
*session
= nfs4_get_session(server
);
7660 dprintk("--> %s\n", __func__
);
7661 /* Note the is a race here, where a CB_LAYOUTRECALL can come in
7662 * right now covering the LAYOUTGET we are about to send.
7663 * However, that is not so catastrophic, and there seems
7664 * to be no way to prevent it completely.
7666 if (nfs41_setup_sequence(session
, &lgp
->args
.seq_args
,
7667 &lgp
->res
.seq_res
, task
))
7669 if (pnfs_choose_layoutget_stateid(&lgp
->args
.stateid
,
7670 NFS_I(lgp
->args
.inode
)->layout
,
7672 lgp
->args
.ctx
->state
)) {
7673 rpc_exit(task
, NFS4_OK
);
7677 static void nfs4_layoutget_done(struct rpc_task
*task
, void *calldata
)
7679 struct nfs4_layoutget
*lgp
= calldata
;
7680 struct inode
*inode
= lgp
->args
.inode
;
7681 struct nfs_server
*server
= NFS_SERVER(inode
);
7682 struct pnfs_layout_hdr
*lo
;
7683 struct nfs4_state
*state
= NULL
;
7684 unsigned long timeo
, now
, giveup
;
7686 dprintk("--> %s tk_status => %d\n", __func__
, -task
->tk_status
);
7688 if (!nfs41_sequence_done(task
, &lgp
->res
.seq_res
))
7691 switch (task
->tk_status
) {
7695 * NFS4ERR_LAYOUTTRYLATER is a conflict with another client
7696 * (or clients) writing to the same RAID stripe
7698 case -NFS4ERR_LAYOUTTRYLATER
:
7700 * NFS4ERR_RECALLCONFLICT is when conflict with self (must recall
7701 * existing layout before getting a new one).
7703 case -NFS4ERR_RECALLCONFLICT
:
7704 timeo
= rpc_get_timeout(task
->tk_client
);
7705 giveup
= lgp
->args
.timestamp
+ timeo
;
7707 if (time_after(giveup
, now
)) {
7708 unsigned long delay
;
7711 * - Not less then NFS4_POLL_RETRY_MIN.
7712 * - One last time a jiffie before we give up
7713 * - exponential backoff (time_now minus start_attempt)
7715 delay
= max_t(unsigned long, NFS4_POLL_RETRY_MIN
,
7716 min((giveup
- now
- 1),
7717 now
- lgp
->args
.timestamp
));
7719 dprintk("%s: NFS4ERR_RECALLCONFLICT waiting %lu\n",
7721 rpc_delay(task
, delay
);
7722 task
->tk_status
= 0;
7723 rpc_restart_call_prepare(task
);
7724 goto out
; /* Do not call nfs4_async_handle_error() */
7727 case -NFS4ERR_EXPIRED
:
7728 case -NFS4ERR_BAD_STATEID
:
7729 spin_lock(&inode
->i_lock
);
7730 lo
= NFS_I(inode
)->layout
;
7731 if (!lo
|| list_empty(&lo
->plh_segs
)) {
7732 spin_unlock(&inode
->i_lock
);
7733 /* If the open stateid was bad, then recover it. */
7734 state
= lgp
->args
.ctx
->state
;
7739 * Mark the bad layout state as invalid, then retry
7740 * with the current stateid.
7742 pnfs_mark_matching_lsegs_invalid(lo
, &head
, NULL
);
7743 spin_unlock(&inode
->i_lock
);
7744 pnfs_free_lseg_list(&head
);
7746 task
->tk_status
= 0;
7747 rpc_restart_call_prepare(task
);
7750 if (nfs4_async_handle_error(task
, server
, state
, NULL
) == -EAGAIN
)
7751 rpc_restart_call_prepare(task
);
7753 dprintk("<-- %s\n", __func__
);
7756 static size_t max_response_pages(struct nfs_server
*server
)
7758 u32 max_resp_sz
= server
->nfs_client
->cl_session
->fc_attrs
.max_resp_sz
;
7759 return nfs_page_array_len(0, max_resp_sz
);
7762 static void nfs4_free_pages(struct page
**pages
, size_t size
)
7769 for (i
= 0; i
< size
; i
++) {
7772 __free_page(pages
[i
]);
7777 static struct page
**nfs4_alloc_pages(size_t size
, gfp_t gfp_flags
)
7779 struct page
**pages
;
7782 pages
= kcalloc(size
, sizeof(struct page
*), gfp_flags
);
7784 dprintk("%s: can't alloc array of %zu pages\n", __func__
, size
);
7788 for (i
= 0; i
< size
; i
++) {
7789 pages
[i
] = alloc_page(gfp_flags
);
7791 dprintk("%s: failed to allocate page\n", __func__
);
7792 nfs4_free_pages(pages
, size
);
7800 static void nfs4_layoutget_release(void *calldata
)
7802 struct nfs4_layoutget
*lgp
= calldata
;
7803 struct inode
*inode
= lgp
->args
.inode
;
7804 struct nfs_server
*server
= NFS_SERVER(inode
);
7805 size_t max_pages
= max_response_pages(server
);
7807 dprintk("--> %s\n", __func__
);
7808 nfs4_free_pages(lgp
->args
.layout
.pages
, max_pages
);
7809 pnfs_put_layout_hdr(NFS_I(inode
)->layout
);
7810 put_nfs_open_context(lgp
->args
.ctx
);
7812 dprintk("<-- %s\n", __func__
);
7815 static const struct rpc_call_ops nfs4_layoutget_call_ops
= {
7816 .rpc_call_prepare
= nfs4_layoutget_prepare
,
7817 .rpc_call_done
= nfs4_layoutget_done
,
7818 .rpc_release
= nfs4_layoutget_release
,
7821 struct pnfs_layout_segment
*
7822 nfs4_proc_layoutget(struct nfs4_layoutget
*lgp
, gfp_t gfp_flags
)
7824 struct inode
*inode
= lgp
->args
.inode
;
7825 struct nfs_server
*server
= NFS_SERVER(inode
);
7826 size_t max_pages
= max_response_pages(server
);
7827 struct rpc_task
*task
;
7828 struct rpc_message msg
= {
7829 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTGET
],
7830 .rpc_argp
= &lgp
->args
,
7831 .rpc_resp
= &lgp
->res
,
7832 .rpc_cred
= lgp
->cred
,
7834 struct rpc_task_setup task_setup_data
= {
7835 .rpc_client
= server
->client
,
7836 .rpc_message
= &msg
,
7837 .callback_ops
= &nfs4_layoutget_call_ops
,
7838 .callback_data
= lgp
,
7839 .flags
= RPC_TASK_ASYNC
,
7841 struct pnfs_layout_segment
*lseg
= NULL
;
7844 dprintk("--> %s\n", __func__
);
7846 /* nfs4_layoutget_release calls pnfs_put_layout_hdr */
7847 pnfs_get_layout_hdr(NFS_I(inode
)->layout
);
7849 lgp
->args
.layout
.pages
= nfs4_alloc_pages(max_pages
, gfp_flags
);
7850 if (!lgp
->args
.layout
.pages
) {
7851 nfs4_layoutget_release(lgp
);
7852 return ERR_PTR(-ENOMEM
);
7854 lgp
->args
.layout
.pglen
= max_pages
* PAGE_SIZE
;
7855 lgp
->args
.timestamp
= jiffies
;
7857 lgp
->res
.layoutp
= &lgp
->args
.layout
;
7858 lgp
->res
.seq_res
.sr_slot
= NULL
;
7859 nfs4_init_sequence(&lgp
->args
.seq_args
, &lgp
->res
.seq_res
, 0);
7861 task
= rpc_run_task(&task_setup_data
);
7863 return ERR_CAST(task
);
7864 status
= nfs4_wait_for_completion_rpc_task(task
);
7866 status
= task
->tk_status
;
7867 trace_nfs4_layoutget(lgp
->args
.ctx
,
7871 /* if layoutp->len is 0, nfs4_layoutget_prepare called rpc_exit */
7872 if (status
== 0 && lgp
->res
.layoutp
->len
)
7873 lseg
= pnfs_layout_process(lgp
);
7875 dprintk("<-- %s status=%d\n", __func__
, status
);
7877 return ERR_PTR(status
);
7882 nfs4_layoutreturn_prepare(struct rpc_task
*task
, void *calldata
)
7884 struct nfs4_layoutreturn
*lrp
= calldata
;
7886 dprintk("--> %s\n", __func__
);
7887 nfs41_setup_sequence(lrp
->clp
->cl_session
,
7888 &lrp
->args
.seq_args
,
7893 static void nfs4_layoutreturn_done(struct rpc_task
*task
, void *calldata
)
7895 struct nfs4_layoutreturn
*lrp
= calldata
;
7896 struct nfs_server
*server
;
7898 dprintk("--> %s\n", __func__
);
7900 if (!nfs41_sequence_done(task
, &lrp
->res
.seq_res
))
7903 server
= NFS_SERVER(lrp
->args
.inode
);
7904 switch (task
->tk_status
) {
7906 task
->tk_status
= 0;
7909 case -NFS4ERR_DELAY
:
7910 if (nfs4_async_handle_error(task
, server
, NULL
, NULL
) != -EAGAIN
)
7912 rpc_restart_call_prepare(task
);
7915 dprintk("<-- %s\n", __func__
);
7918 static void nfs4_layoutreturn_release(void *calldata
)
7920 struct nfs4_layoutreturn
*lrp
= calldata
;
7921 struct pnfs_layout_hdr
*lo
= lrp
->args
.layout
;
7923 dprintk("--> %s\n", __func__
);
7924 spin_lock(&lo
->plh_inode
->i_lock
);
7925 if (lrp
->res
.lrs_present
)
7926 pnfs_set_layout_stateid(lo
, &lrp
->res
.stateid
, true);
7927 pnfs_clear_layoutreturn_waitbit(lo
);
7928 clear_bit(NFS_LAYOUT_RETURN_BEFORE_CLOSE
, &lo
->plh_flags
);
7929 rpc_wake_up(&NFS_SERVER(lo
->plh_inode
)->roc_rpcwaitq
);
7930 lo
->plh_block_lgets
--;
7931 spin_unlock(&lo
->plh_inode
->i_lock
);
7932 pnfs_put_layout_hdr(lrp
->args
.layout
);
7933 nfs_iput_and_deactive(lrp
->inode
);
7935 dprintk("<-- %s\n", __func__
);
7938 static const struct rpc_call_ops nfs4_layoutreturn_call_ops
= {
7939 .rpc_call_prepare
= nfs4_layoutreturn_prepare
,
7940 .rpc_call_done
= nfs4_layoutreturn_done
,
7941 .rpc_release
= nfs4_layoutreturn_release
,
7944 int nfs4_proc_layoutreturn(struct nfs4_layoutreturn
*lrp
, bool sync
)
7946 struct rpc_task
*task
;
7947 struct rpc_message msg
= {
7948 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTRETURN
],
7949 .rpc_argp
= &lrp
->args
,
7950 .rpc_resp
= &lrp
->res
,
7951 .rpc_cred
= lrp
->cred
,
7953 struct rpc_task_setup task_setup_data
= {
7954 .rpc_client
= NFS_SERVER(lrp
->args
.inode
)->client
,
7955 .rpc_message
= &msg
,
7956 .callback_ops
= &nfs4_layoutreturn_call_ops
,
7957 .callback_data
= lrp
,
7961 dprintk("--> %s\n", __func__
);
7963 lrp
->inode
= nfs_igrab_and_active(lrp
->args
.inode
);
7965 nfs4_layoutreturn_release(lrp
);
7968 task_setup_data
.flags
|= RPC_TASK_ASYNC
;
7970 nfs4_init_sequence(&lrp
->args
.seq_args
, &lrp
->res
.seq_res
, 1);
7971 task
= rpc_run_task(&task_setup_data
);
7973 return PTR_ERR(task
);
7975 status
= task
->tk_status
;
7976 trace_nfs4_layoutreturn(lrp
->args
.inode
, status
);
7977 dprintk("<-- %s status=%d\n", __func__
, status
);
7983 _nfs4_proc_getdeviceinfo(struct nfs_server
*server
,
7984 struct pnfs_device
*pdev
,
7985 struct rpc_cred
*cred
)
7987 struct nfs4_getdeviceinfo_args args
= {
7989 .notify_types
= NOTIFY_DEVICEID4_CHANGE
|
7990 NOTIFY_DEVICEID4_DELETE
,
7992 struct nfs4_getdeviceinfo_res res
= {
7995 struct rpc_message msg
= {
7996 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETDEVICEINFO
],
8003 dprintk("--> %s\n", __func__
);
8004 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
8005 if (res
.notification
& ~args
.notify_types
)
8006 dprintk("%s: unsupported notification\n", __func__
);
8007 if (res
.notification
!= args
.notify_types
)
8010 dprintk("<-- %s status=%d\n", __func__
, status
);
8015 int nfs4_proc_getdeviceinfo(struct nfs_server
*server
,
8016 struct pnfs_device
*pdev
,
8017 struct rpc_cred
*cred
)
8019 struct nfs4_exception exception
= { };
8023 err
= nfs4_handle_exception(server
,
8024 _nfs4_proc_getdeviceinfo(server
, pdev
, cred
),
8026 } while (exception
.retry
);
8029 EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo
);
8031 static void nfs4_layoutcommit_prepare(struct rpc_task
*task
, void *calldata
)
8033 struct nfs4_layoutcommit_data
*data
= calldata
;
8034 struct nfs_server
*server
= NFS_SERVER(data
->args
.inode
);
8035 struct nfs4_session
*session
= nfs4_get_session(server
);
8037 nfs41_setup_sequence(session
,
8038 &data
->args
.seq_args
,
8044 nfs4_layoutcommit_done(struct rpc_task
*task
, void *calldata
)
8046 struct nfs4_layoutcommit_data
*data
= calldata
;
8047 struct nfs_server
*server
= NFS_SERVER(data
->args
.inode
);
8049 if (!nfs41_sequence_done(task
, &data
->res
.seq_res
))
8052 switch (task
->tk_status
) { /* Just ignore these failures */
8053 case -NFS4ERR_DELEG_REVOKED
: /* layout was recalled */
8054 case -NFS4ERR_BADIOMODE
: /* no IOMODE_RW layout for range */
8055 case -NFS4ERR_BADLAYOUT
: /* no layout */
8056 case -NFS4ERR_GRACE
: /* loca_recalim always false */
8057 task
->tk_status
= 0;
8061 if (nfs4_async_handle_error(task
, server
, NULL
, NULL
) == -EAGAIN
) {
8062 rpc_restart_call_prepare(task
);
8068 static void nfs4_layoutcommit_release(void *calldata
)
8070 struct nfs4_layoutcommit_data
*data
= calldata
;
8072 pnfs_cleanup_layoutcommit(data
);
8073 nfs_post_op_update_inode_force_wcc(data
->args
.inode
,
8075 put_rpccred(data
->cred
);
8076 nfs_iput_and_deactive(data
->inode
);
8080 static const struct rpc_call_ops nfs4_layoutcommit_ops
= {
8081 .rpc_call_prepare
= nfs4_layoutcommit_prepare
,
8082 .rpc_call_done
= nfs4_layoutcommit_done
,
8083 .rpc_release
= nfs4_layoutcommit_release
,
8087 nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data
*data
, bool sync
)
8089 struct rpc_message msg
= {
8090 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTCOMMIT
],
8091 .rpc_argp
= &data
->args
,
8092 .rpc_resp
= &data
->res
,
8093 .rpc_cred
= data
->cred
,
8095 struct rpc_task_setup task_setup_data
= {
8096 .task
= &data
->task
,
8097 .rpc_client
= NFS_CLIENT(data
->args
.inode
),
8098 .rpc_message
= &msg
,
8099 .callback_ops
= &nfs4_layoutcommit_ops
,
8100 .callback_data
= data
,
8102 struct rpc_task
*task
;
8105 dprintk("NFS: %4d initiating layoutcommit call. sync %d "
8106 "lbw: %llu inode %lu\n",
8107 data
->task
.tk_pid
, sync
,
8108 data
->args
.lastbytewritten
,
8109 data
->args
.inode
->i_ino
);
8112 data
->inode
= nfs_igrab_and_active(data
->args
.inode
);
8113 if (data
->inode
== NULL
) {
8114 nfs4_layoutcommit_release(data
);
8117 task_setup_data
.flags
= RPC_TASK_ASYNC
;
8119 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
8120 task
= rpc_run_task(&task_setup_data
);
8122 return PTR_ERR(task
);
8124 status
= task
->tk_status
;
8125 trace_nfs4_layoutcommit(data
->args
.inode
, status
);
8126 dprintk("%s: status %d\n", __func__
, status
);
8132 * Use the state managment nfs_client cl_rpcclient, which uses krb5i (if
8133 * possible) as per RFC3530bis and RFC5661 Security Considerations sections
8136 _nfs41_proc_secinfo_no_name(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
8137 struct nfs_fsinfo
*info
,
8138 struct nfs4_secinfo_flavors
*flavors
, bool use_integrity
)
8140 struct nfs41_secinfo_no_name_args args
= {
8141 .style
= SECINFO_STYLE_CURRENT_FH
,
8143 struct nfs4_secinfo_res res
= {
8146 struct rpc_message msg
= {
8147 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SECINFO_NO_NAME
],
8151 struct rpc_clnt
*clnt
= server
->client
;
8152 struct rpc_cred
*cred
= NULL
;
8155 if (use_integrity
) {
8156 clnt
= server
->nfs_client
->cl_rpcclient
;
8157 cred
= nfs4_get_clid_cred(server
->nfs_client
);
8158 msg
.rpc_cred
= cred
;
8161 dprintk("--> %s\n", __func__
);
8162 status
= nfs4_call_sync(clnt
, server
, &msg
, &args
.seq_args
,
8164 dprintk("<-- %s status=%d\n", __func__
, status
);
8173 nfs41_proc_secinfo_no_name(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
8174 struct nfs_fsinfo
*info
, struct nfs4_secinfo_flavors
*flavors
)
8176 struct nfs4_exception exception
= { };
8179 /* first try using integrity protection */
8180 err
= -NFS4ERR_WRONGSEC
;
8182 /* try to use integrity protection with machine cred */
8183 if (_nfs4_is_integrity_protected(server
->nfs_client
))
8184 err
= _nfs41_proc_secinfo_no_name(server
, fhandle
, info
,
8188 * if unable to use integrity protection, or SECINFO with
8189 * integrity protection returns NFS4ERR_WRONGSEC (which is
8190 * disallowed by spec, but exists in deployed servers) use
8191 * the current filesystem's rpc_client and the user cred.
8193 if (err
== -NFS4ERR_WRONGSEC
)
8194 err
= _nfs41_proc_secinfo_no_name(server
, fhandle
, info
,
8199 case -NFS4ERR_WRONGSEC
:
8203 err
= nfs4_handle_exception(server
, err
, &exception
);
8205 } while (exception
.retry
);
8211 nfs41_find_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
8212 struct nfs_fsinfo
*info
)
8216 rpc_authflavor_t flavor
= RPC_AUTH_MAXFLAVOR
;
8217 struct nfs4_secinfo_flavors
*flavors
;
8218 struct nfs4_secinfo4
*secinfo
;
8221 page
= alloc_page(GFP_KERNEL
);
8227 flavors
= page_address(page
);
8228 err
= nfs41_proc_secinfo_no_name(server
, fhandle
, info
, flavors
);
8231 * Fall back on "guess and check" method if
8232 * the server doesn't support SECINFO_NO_NAME
8234 if (err
== -NFS4ERR_WRONGSEC
|| err
== -ENOTSUPP
) {
8235 err
= nfs4_find_root_sec(server
, fhandle
, info
);
8241 for (i
= 0; i
< flavors
->num_flavors
; i
++) {
8242 secinfo
= &flavors
->flavors
[i
];
8244 switch (secinfo
->flavor
) {
8248 flavor
= rpcauth_get_pseudoflavor(secinfo
->flavor
,
8249 &secinfo
->flavor_info
);
8252 flavor
= RPC_AUTH_MAXFLAVOR
;
8256 if (!nfs_auth_info_match(&server
->auth_info
, flavor
))
8257 flavor
= RPC_AUTH_MAXFLAVOR
;
8259 if (flavor
!= RPC_AUTH_MAXFLAVOR
) {
8260 err
= nfs4_lookup_root_sec(server
, fhandle
,
8267 if (flavor
== RPC_AUTH_MAXFLAVOR
)
8278 static int _nfs41_test_stateid(struct nfs_server
*server
,
8279 nfs4_stateid
*stateid
,
8280 struct rpc_cred
*cred
)
8283 struct nfs41_test_stateid_args args
= {
8286 struct nfs41_test_stateid_res res
;
8287 struct rpc_message msg
= {
8288 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_TEST_STATEID
],
8293 struct rpc_clnt
*rpc_client
= server
->client
;
8295 nfs4_state_protect(server
->nfs_client
, NFS_SP4_MACH_CRED_STATEID
,
8298 dprintk("NFS call test_stateid %p\n", stateid
);
8299 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
8300 nfs4_set_sequence_privileged(&args
.seq_args
);
8301 status
= nfs4_call_sync_sequence(rpc_client
, server
, &msg
,
8302 &args
.seq_args
, &res
.seq_res
);
8303 if (status
!= NFS_OK
) {
8304 dprintk("NFS reply test_stateid: failed, %d\n", status
);
8307 dprintk("NFS reply test_stateid: succeeded, %d\n", -res
.status
);
8312 * nfs41_test_stateid - perform a TEST_STATEID operation
8314 * @server: server / transport on which to perform the operation
8315 * @stateid: state ID to test
8318 * Returns NFS_OK if the server recognizes that "stateid" is valid.
8319 * Otherwise a negative NFS4ERR value is returned if the operation
8320 * failed or the state ID is not currently valid.
8322 static int nfs41_test_stateid(struct nfs_server
*server
,
8323 nfs4_stateid
*stateid
,
8324 struct rpc_cred
*cred
)
8326 struct nfs4_exception exception
= { };
8329 err
= _nfs41_test_stateid(server
, stateid
, cred
);
8330 if (err
!= -NFS4ERR_DELAY
)
8332 nfs4_handle_exception(server
, err
, &exception
);
8333 } while (exception
.retry
);
8337 struct nfs_free_stateid_data
{
8338 struct nfs_server
*server
;
8339 struct nfs41_free_stateid_args args
;
8340 struct nfs41_free_stateid_res res
;
8343 static void nfs41_free_stateid_prepare(struct rpc_task
*task
, void *calldata
)
8345 struct nfs_free_stateid_data
*data
= calldata
;
8346 nfs41_setup_sequence(nfs4_get_session(data
->server
),
8347 &data
->args
.seq_args
,
8352 static void nfs41_free_stateid_done(struct rpc_task
*task
, void *calldata
)
8354 struct nfs_free_stateid_data
*data
= calldata
;
8356 nfs41_sequence_done(task
, &data
->res
.seq_res
);
8358 switch (task
->tk_status
) {
8359 case -NFS4ERR_DELAY
:
8360 if (nfs4_async_handle_error(task
, data
->server
, NULL
, NULL
) == -EAGAIN
)
8361 rpc_restart_call_prepare(task
);
8365 static void nfs41_free_stateid_release(void *calldata
)
8370 static const struct rpc_call_ops nfs41_free_stateid_ops
= {
8371 .rpc_call_prepare
= nfs41_free_stateid_prepare
,
8372 .rpc_call_done
= nfs41_free_stateid_done
,
8373 .rpc_release
= nfs41_free_stateid_release
,
8376 static struct rpc_task
*_nfs41_free_stateid(struct nfs_server
*server
,
8377 nfs4_stateid
*stateid
,
8378 struct rpc_cred
*cred
,
8381 struct rpc_message msg
= {
8382 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FREE_STATEID
],
8385 struct rpc_task_setup task_setup
= {
8386 .rpc_client
= server
->client
,
8387 .rpc_message
= &msg
,
8388 .callback_ops
= &nfs41_free_stateid_ops
,
8389 .flags
= RPC_TASK_ASYNC
,
8391 struct nfs_free_stateid_data
*data
;
8393 nfs4_state_protect(server
->nfs_client
, NFS_SP4_MACH_CRED_STATEID
,
8394 &task_setup
.rpc_client
, &msg
);
8396 dprintk("NFS call free_stateid %p\n", stateid
);
8397 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
8399 return ERR_PTR(-ENOMEM
);
8400 data
->server
= server
;
8401 nfs4_stateid_copy(&data
->args
.stateid
, stateid
);
8403 task_setup
.callback_data
= data
;
8405 msg
.rpc_argp
= &data
->args
;
8406 msg
.rpc_resp
= &data
->res
;
8407 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 0);
8409 nfs4_set_sequence_privileged(&data
->args
.seq_args
);
8411 return rpc_run_task(&task_setup
);
8415 * nfs41_free_stateid - perform a FREE_STATEID operation
8417 * @server: server / transport on which to perform the operation
8418 * @stateid: state ID to release
8421 * Returns NFS_OK if the server freed "stateid". Otherwise a
8422 * negative NFS4ERR value is returned.
8424 static int nfs41_free_stateid(struct nfs_server
*server
,
8425 nfs4_stateid
*stateid
,
8426 struct rpc_cred
*cred
)
8428 struct rpc_task
*task
;
8431 task
= _nfs41_free_stateid(server
, stateid
, cred
, true);
8433 return PTR_ERR(task
);
8434 ret
= rpc_wait_for_completion_task(task
);
8436 ret
= task
->tk_status
;
8442 nfs41_free_lock_state(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
)
8444 struct rpc_task
*task
;
8445 struct rpc_cred
*cred
= lsp
->ls_state
->owner
->so_cred
;
8447 task
= _nfs41_free_stateid(server
, &lsp
->ls_stateid
, cred
, false);
8448 nfs4_free_lock_state(server
, lsp
);
8454 static bool nfs41_match_stateid(const nfs4_stateid
*s1
,
8455 const nfs4_stateid
*s2
)
8457 if (memcmp(s1
->other
, s2
->other
, sizeof(s1
->other
)) != 0)
8460 if (s1
->seqid
== s2
->seqid
)
8462 if (s1
->seqid
== 0 || s2
->seqid
== 0)
8468 #endif /* CONFIG_NFS_V4_1 */
8470 static bool nfs4_match_stateid(const nfs4_stateid
*s1
,
8471 const nfs4_stateid
*s2
)
8473 return nfs4_stateid_match(s1
, s2
);
8477 static const struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops
= {
8478 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
8479 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
8480 .recover_open
= nfs4_open_reclaim
,
8481 .recover_lock
= nfs4_lock_reclaim
,
8482 .establish_clid
= nfs4_init_clientid
,
8483 .detect_trunking
= nfs40_discover_server_trunking
,
8486 #if defined(CONFIG_NFS_V4_1)
8487 static const struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops
= {
8488 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
8489 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
8490 .recover_open
= nfs4_open_reclaim
,
8491 .recover_lock
= nfs4_lock_reclaim
,
8492 .establish_clid
= nfs41_init_clientid
,
8493 .reclaim_complete
= nfs41_proc_reclaim_complete
,
8494 .detect_trunking
= nfs41_discover_server_trunking
,
8496 #endif /* CONFIG_NFS_V4_1 */
8498 static const struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops
= {
8499 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
8500 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
8501 .recover_open
= nfs40_open_expired
,
8502 .recover_lock
= nfs4_lock_expired
,
8503 .establish_clid
= nfs4_init_clientid
,
8506 #if defined(CONFIG_NFS_V4_1)
8507 static const struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops
= {
8508 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
8509 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
8510 .recover_open
= nfs41_open_expired
,
8511 .recover_lock
= nfs41_lock_expired
,
8512 .establish_clid
= nfs41_init_clientid
,
8514 #endif /* CONFIG_NFS_V4_1 */
8516 static const struct nfs4_state_maintenance_ops nfs40_state_renewal_ops
= {
8517 .sched_state_renewal
= nfs4_proc_async_renew
,
8518 .get_state_renewal_cred_locked
= nfs4_get_renew_cred_locked
,
8519 .renew_lease
= nfs4_proc_renew
,
8522 #if defined(CONFIG_NFS_V4_1)
8523 static const struct nfs4_state_maintenance_ops nfs41_state_renewal_ops
= {
8524 .sched_state_renewal
= nfs41_proc_async_sequence
,
8525 .get_state_renewal_cred_locked
= nfs4_get_machine_cred_locked
,
8526 .renew_lease
= nfs4_proc_sequence
,
8530 static const struct nfs4_mig_recovery_ops nfs40_mig_recovery_ops
= {
8531 .get_locations
= _nfs40_proc_get_locations
,
8532 .fsid_present
= _nfs40_proc_fsid_present
,
8535 #if defined(CONFIG_NFS_V4_1)
8536 static const struct nfs4_mig_recovery_ops nfs41_mig_recovery_ops
= {
8537 .get_locations
= _nfs41_proc_get_locations
,
8538 .fsid_present
= _nfs41_proc_fsid_present
,
8540 #endif /* CONFIG_NFS_V4_1 */
8542 static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops
= {
8544 .init_caps
= NFS_CAP_READDIRPLUS
8545 | NFS_CAP_ATOMIC_OPEN
8546 | NFS_CAP_CHANGE_ATTR
8547 | NFS_CAP_POSIX_LOCK
,
8548 .init_client
= nfs40_init_client
,
8549 .shutdown_client
= nfs40_shutdown_client
,
8550 .match_stateid
= nfs4_match_stateid
,
8551 .find_root_sec
= nfs4_find_root_sec
,
8552 .free_lock_state
= nfs4_release_lockowner
,
8553 .alloc_seqid
= nfs_alloc_seqid
,
8554 .call_sync_ops
= &nfs40_call_sync_ops
,
8555 .reboot_recovery_ops
= &nfs40_reboot_recovery_ops
,
8556 .nograce_recovery_ops
= &nfs40_nograce_recovery_ops
,
8557 .state_renewal_ops
= &nfs40_state_renewal_ops
,
8558 .mig_recovery_ops
= &nfs40_mig_recovery_ops
,
8561 #if defined(CONFIG_NFS_V4_1)
8562 static struct nfs_seqid
*
8563 nfs_alloc_no_seqid(struct nfs_seqid_counter
*arg1
, gfp_t arg2
)
8568 static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops
= {
8570 .init_caps
= NFS_CAP_READDIRPLUS
8571 | NFS_CAP_ATOMIC_OPEN
8572 | NFS_CAP_CHANGE_ATTR
8573 | NFS_CAP_POSIX_LOCK
8574 | NFS_CAP_STATEID_NFSV41
8575 | NFS_CAP_ATOMIC_OPEN_V1
,
8576 .init_client
= nfs41_init_client
,
8577 .shutdown_client
= nfs41_shutdown_client
,
8578 .match_stateid
= nfs41_match_stateid
,
8579 .find_root_sec
= nfs41_find_root_sec
,
8580 .free_lock_state
= nfs41_free_lock_state
,
8581 .alloc_seqid
= nfs_alloc_no_seqid
,
8582 .call_sync_ops
= &nfs41_call_sync_ops
,
8583 .reboot_recovery_ops
= &nfs41_reboot_recovery_ops
,
8584 .nograce_recovery_ops
= &nfs41_nograce_recovery_ops
,
8585 .state_renewal_ops
= &nfs41_state_renewal_ops
,
8586 .mig_recovery_ops
= &nfs41_mig_recovery_ops
,
8590 #if defined(CONFIG_NFS_V4_2)
8591 static const struct nfs4_minor_version_ops nfs_v4_2_minor_ops
= {
8593 .init_caps
= NFS_CAP_READDIRPLUS
8594 | NFS_CAP_ATOMIC_OPEN
8595 | NFS_CAP_CHANGE_ATTR
8596 | NFS_CAP_POSIX_LOCK
8597 | NFS_CAP_STATEID_NFSV41
8598 | NFS_CAP_ATOMIC_OPEN_V1
8600 | NFS_CAP_DEALLOCATE
8602 .init_client
= nfs41_init_client
,
8603 .shutdown_client
= nfs41_shutdown_client
,
8604 .match_stateid
= nfs41_match_stateid
,
8605 .find_root_sec
= nfs41_find_root_sec
,
8606 .free_lock_state
= nfs41_free_lock_state
,
8607 .call_sync_ops
= &nfs41_call_sync_ops
,
8608 .alloc_seqid
= nfs_alloc_no_seqid
,
8609 .reboot_recovery_ops
= &nfs41_reboot_recovery_ops
,
8610 .nograce_recovery_ops
= &nfs41_nograce_recovery_ops
,
8611 .state_renewal_ops
= &nfs41_state_renewal_ops
,
8615 const struct nfs4_minor_version_ops
*nfs_v4_minor_ops
[] = {
8616 [0] = &nfs_v4_0_minor_ops
,
8617 #if defined(CONFIG_NFS_V4_1)
8618 [1] = &nfs_v4_1_minor_ops
,
8620 #if defined(CONFIG_NFS_V4_2)
8621 [2] = &nfs_v4_2_minor_ops
,
8625 static const struct inode_operations nfs4_dir_inode_operations
= {
8626 .create
= nfs_create
,
8627 .lookup
= nfs_lookup
,
8628 .atomic_open
= nfs_atomic_open
,
8630 .unlink
= nfs_unlink
,
8631 .symlink
= nfs_symlink
,
8635 .rename
= nfs_rename
,
8636 .permission
= nfs_permission
,
8637 .getattr
= nfs_getattr
,
8638 .setattr
= nfs_setattr
,
8639 .getxattr
= generic_getxattr
,
8640 .setxattr
= generic_setxattr
,
8641 .listxattr
= generic_listxattr
,
8642 .removexattr
= generic_removexattr
,
8645 static const struct inode_operations nfs4_file_inode_operations
= {
8646 .permission
= nfs_permission
,
8647 .getattr
= nfs_getattr
,
8648 .setattr
= nfs_setattr
,
8649 .getxattr
= generic_getxattr
,
8650 .setxattr
= generic_setxattr
,
8651 .listxattr
= generic_listxattr
,
8652 .removexattr
= generic_removexattr
,
8655 const struct nfs_rpc_ops nfs_v4_clientops
= {
8656 .version
= 4, /* protocol version */
8657 .dentry_ops
= &nfs4_dentry_operations
,
8658 .dir_inode_ops
= &nfs4_dir_inode_operations
,
8659 .file_inode_ops
= &nfs4_file_inode_operations
,
8660 .file_ops
= &nfs4_file_operations
,
8661 .getroot
= nfs4_proc_get_root
,
8662 .submount
= nfs4_submount
,
8663 .try_mount
= nfs4_try_mount
,
8664 .getattr
= nfs4_proc_getattr
,
8665 .setattr
= nfs4_proc_setattr
,
8666 .lookup
= nfs4_proc_lookup
,
8667 .access
= nfs4_proc_access
,
8668 .readlink
= nfs4_proc_readlink
,
8669 .create
= nfs4_proc_create
,
8670 .remove
= nfs4_proc_remove
,
8671 .unlink_setup
= nfs4_proc_unlink_setup
,
8672 .unlink_rpc_prepare
= nfs4_proc_unlink_rpc_prepare
,
8673 .unlink_done
= nfs4_proc_unlink_done
,
8674 .rename_setup
= nfs4_proc_rename_setup
,
8675 .rename_rpc_prepare
= nfs4_proc_rename_rpc_prepare
,
8676 .rename_done
= nfs4_proc_rename_done
,
8677 .link
= nfs4_proc_link
,
8678 .symlink
= nfs4_proc_symlink
,
8679 .mkdir
= nfs4_proc_mkdir
,
8680 .rmdir
= nfs4_proc_remove
,
8681 .readdir
= nfs4_proc_readdir
,
8682 .mknod
= nfs4_proc_mknod
,
8683 .statfs
= nfs4_proc_statfs
,
8684 .fsinfo
= nfs4_proc_fsinfo
,
8685 .pathconf
= nfs4_proc_pathconf
,
8686 .set_capabilities
= nfs4_server_capabilities
,
8687 .decode_dirent
= nfs4_decode_dirent
,
8688 .pgio_rpc_prepare
= nfs4_proc_pgio_rpc_prepare
,
8689 .read_setup
= nfs4_proc_read_setup
,
8690 .read_done
= nfs4_read_done
,
8691 .write_setup
= nfs4_proc_write_setup
,
8692 .write_done
= nfs4_write_done
,
8693 .commit_setup
= nfs4_proc_commit_setup
,
8694 .commit_rpc_prepare
= nfs4_proc_commit_rpc_prepare
,
8695 .commit_done
= nfs4_commit_done
,
8696 .lock
= nfs4_proc_lock
,
8697 .clear_acl_cache
= nfs4_zap_acl_attr
,
8698 .close_context
= nfs4_close_context
,
8699 .open_context
= nfs4_atomic_open
,
8700 .have_delegation
= nfs4_have_delegation
,
8701 .return_delegation
= nfs4_inode_return_delegation
,
8702 .alloc_client
= nfs4_alloc_client
,
8703 .init_client
= nfs4_init_client
,
8704 .free_client
= nfs4_free_client
,
8705 .create_server
= nfs4_create_server
,
8706 .clone_server
= nfs_clone_server
,
8709 static const struct xattr_handler nfs4_xattr_nfs4_acl_handler
= {
8710 .prefix
= XATTR_NAME_NFSV4_ACL
,
8711 .list
= nfs4_xattr_list_nfs4_acl
,
8712 .get
= nfs4_xattr_get_nfs4_acl
,
8713 .set
= nfs4_xattr_set_nfs4_acl
,
8716 const struct xattr_handler
*nfs4_xattr_handlers
[] = {
8717 &nfs4_xattr_nfs4_acl_handler
,
8718 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
8719 &nfs4_xattr_nfs4_label_handler
,