4 * Client-side procedure declarations for NFSv4.
6 * Copyright (c) 2002 The Regents of the University of Michigan.
9 * Kendrick Smith <kmsmith@umich.edu>
10 * Andy Adamson <andros@umich.edu>
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
16 * 1. Redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer.
18 * 2. Redistributions in binary form must reproduce the above copyright
19 * notice, this list of conditions and the following disclaimer in the
20 * documentation and/or other materials provided with the distribution.
21 * 3. Neither the name of the University nor the names of its
22 * contributors may be used to endorse or promote products derived
23 * from this software without specific prior written permission.
25 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
26 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
27 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
28 * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
32 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
33 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
34 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
35 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
39 #include <linux/delay.h>
40 #include <linux/errno.h>
41 #include <linux/string.h>
42 #include <linux/ratelimit.h>
43 #include <linux/printk.h>
44 #include <linux/slab.h>
45 #include <linux/sunrpc/clnt.h>
46 #include <linux/nfs.h>
47 #include <linux/nfs4.h>
48 #include <linux/nfs_fs.h>
49 #include <linux/nfs_page.h>
50 #include <linux/nfs_mount.h>
51 #include <linux/namei.h>
52 #include <linux/mount.h>
53 #include <linux/module.h>
54 #include <linux/xattr.h>
55 #include <linux/utsname.h>
56 #include <linux/freezer.h>
57 #include <linux/iversion.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_BITMASK_SZ 3
76 #define NFS4_POLL_RETRY_MIN (HZ/10)
77 #define NFS4_POLL_RETRY_MAX (15*HZ)
79 /* file attributes which can be mapped to nfs attributes */
80 #define NFS4_VALID_ATTRS (ATTR_MODE \
91 static int _nfs4_recover_proc_open(struct nfs4_opendata *data);
92 static int nfs4_do_fsinfo(struct nfs_server *, struct nfs_fh *, struct nfs_fsinfo *);
93 static void nfs_fixup_referral_attributes(struct nfs_fattr *fattr);
94 static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr, struct nfs4_label *label, struct inode *inode);
95 static int nfs4_do_setattr(struct inode *inode, const struct cred *cred,
96 struct nfs_fattr *fattr, struct iattr *sattr,
97 struct nfs_open_context *ctx, struct nfs4_label *ilabel,
98 struct nfs4_label *olabel);
99 #ifdef CONFIG_NFS_V4_1
100 static struct rpc_task *_nfs41_proc_sequence(struct nfs_client *clp,
101 const struct cred *cred,
102 struct nfs4_slot *slot,
104 static int nfs41_test_stateid(struct nfs_server *, nfs4_stateid *,
105 const struct cred *);
106 static int nfs41_free_stateid(struct nfs_server *, const nfs4_stateid *,
107 const struct cred *, bool);
110 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
111 static inline struct nfs4_label *
112 nfs4_label_init_security(struct inode *dir, struct dentry *dentry,
113 struct iattr *sattr, struct nfs4_label *label)
120 if (nfs_server_capable(dir, NFS_CAP_SECURITY_LABEL) == 0)
123 err = security_dentry_init_security(dentry, sattr->ia_mode,
124 &dentry->d_name, (void **)&label->label, &label->len);
131 nfs4_label_release_security(struct nfs4_label *label)
134 security_release_secctx(label->label, label->len);
136 static inline u32 *nfs4_bitmask(struct nfs_server *server, struct nfs4_label *label)
139 return server->attr_bitmask;
141 return server->attr_bitmask_nl;
144 static inline struct nfs4_label *
145 nfs4_label_init_security(struct inode *dir, struct dentry *dentry,
146 struct iattr *sattr, struct nfs4_label *l)
149 nfs4_label_release_security(struct nfs4_label *label)
152 nfs4_bitmask(struct nfs_server *server, struct nfs4_label *label)
153 { return server->attr_bitmask; }
156 /* Prevent leaks of NFSv4 errors into userland */
157 static int nfs4_map_errors(int err)
162 case -NFS4ERR_RESOURCE:
163 case -NFS4ERR_LAYOUTTRYLATER:
164 case -NFS4ERR_RECALLCONFLICT:
166 case -NFS4ERR_WRONGSEC:
167 case -NFS4ERR_WRONG_CRED:
169 case -NFS4ERR_BADOWNER:
170 case -NFS4ERR_BADNAME:
172 case -NFS4ERR_SHARE_DENIED:
174 case -NFS4ERR_MINOR_VERS_MISMATCH:
175 return -EPROTONOSUPPORT;
176 case -NFS4ERR_FILE_OPEN:
179 dprintk("%s could not handle NFSv4 error %d\n",
187 * This is our standard bitmap for GETATTR requests.
189 const u32 nfs4_fattr_bitmap[3] = {
191 | FATTR4_WORD0_CHANGE
194 | FATTR4_WORD0_FILEID,
196 | FATTR4_WORD1_NUMLINKS
198 | FATTR4_WORD1_OWNER_GROUP
199 | FATTR4_WORD1_RAWDEV
200 | FATTR4_WORD1_SPACE_USED
201 | FATTR4_WORD1_TIME_ACCESS
202 | FATTR4_WORD1_TIME_METADATA
203 | FATTR4_WORD1_TIME_MODIFY
204 | FATTR4_WORD1_MOUNTED_ON_FILEID,
205 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
206 FATTR4_WORD2_SECURITY_LABEL
210 static const u32 nfs4_pnfs_open_bitmap[3] = {
212 | FATTR4_WORD0_CHANGE
215 | FATTR4_WORD0_FILEID,
217 | FATTR4_WORD1_NUMLINKS
219 | FATTR4_WORD1_OWNER_GROUP
220 | FATTR4_WORD1_RAWDEV
221 | FATTR4_WORD1_SPACE_USED
222 | FATTR4_WORD1_TIME_ACCESS
223 | FATTR4_WORD1_TIME_METADATA
224 | FATTR4_WORD1_TIME_MODIFY,
225 FATTR4_WORD2_MDSTHRESHOLD
226 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
227 | FATTR4_WORD2_SECURITY_LABEL
231 static const u32 nfs4_open_noattr_bitmap[3] = {
233 | FATTR4_WORD0_FILEID,
236 const u32 nfs4_statfs_bitmap[3] = {
237 FATTR4_WORD0_FILES_AVAIL
238 | FATTR4_WORD0_FILES_FREE
239 | FATTR4_WORD0_FILES_TOTAL,
240 FATTR4_WORD1_SPACE_AVAIL
241 | FATTR4_WORD1_SPACE_FREE
242 | FATTR4_WORD1_SPACE_TOTAL
245 const u32 nfs4_pathconf_bitmap[3] = {
247 | FATTR4_WORD0_MAXNAME,
251 const u32 nfs4_fsinfo_bitmap[3] = { FATTR4_WORD0_MAXFILESIZE
252 | FATTR4_WORD0_MAXREAD
253 | FATTR4_WORD0_MAXWRITE
254 | FATTR4_WORD0_LEASE_TIME,
255 FATTR4_WORD1_TIME_DELTA
256 | FATTR4_WORD1_FS_LAYOUT_TYPES,
257 FATTR4_WORD2_LAYOUT_BLKSIZE
258 | FATTR4_WORD2_CLONE_BLKSIZE
261 const u32 nfs4_fs_locations_bitmap[3] = {
265 | FATTR4_WORD0_FILEID
266 | FATTR4_WORD0_FS_LOCATIONS,
268 | FATTR4_WORD1_OWNER_GROUP
269 | FATTR4_WORD1_RAWDEV
270 | FATTR4_WORD1_SPACE_USED
271 | FATTR4_WORD1_TIME_ACCESS
272 | FATTR4_WORD1_TIME_METADATA
273 | FATTR4_WORD1_TIME_MODIFY
274 | FATTR4_WORD1_MOUNTED_ON_FILEID,
277 static void nfs4_bitmap_copy_adjust(__u32 *dst, const __u32 *src,
280 unsigned long cache_validity;
282 memcpy(dst, src, NFS4_BITMASK_SZ*sizeof(*dst));
283 if (!inode || !nfs4_have_delegation(inode, FMODE_READ))
286 cache_validity = READ_ONCE(NFS_I(inode)->cache_validity);
287 if (!(cache_validity & NFS_INO_REVAL_FORCED))
288 cache_validity &= ~(NFS_INO_INVALID_CHANGE
289 | NFS_INO_INVALID_SIZE);
291 if (!(cache_validity & NFS_INO_INVALID_SIZE))
292 dst[0] &= ~FATTR4_WORD0_SIZE;
294 if (!(cache_validity & NFS_INO_INVALID_CHANGE))
295 dst[0] &= ~FATTR4_WORD0_CHANGE;
298 static void nfs4_bitmap_copy_adjust_setattr(__u32 *dst,
299 const __u32 *src, struct inode *inode)
301 nfs4_bitmap_copy_adjust(dst, src, inode);
304 static void nfs4_setup_readdir(u64 cookie, __be32 *verifier, struct dentry *dentry,
305 struct nfs4_readdir_arg *readdir)
307 unsigned int attrs = FATTR4_WORD0_FILEID | FATTR4_WORD0_TYPE;
311 readdir->cookie = cookie;
312 memcpy(&readdir->verifier, verifier, sizeof(readdir->verifier));
317 memset(&readdir->verifier, 0, sizeof(readdir->verifier));
322 * NFSv4 servers do not return entries for '.' and '..'
323 * Therefore, we fake these entries here. We let '.'
324 * have cookie 0 and '..' have cookie 1. Note that
325 * when talking to the server, we always send cookie 0
328 start = p = kmap_atomic(*readdir->pages);
331 *p++ = xdr_one; /* next */
332 *p++ = xdr_zero; /* cookie, first word */
333 *p++ = xdr_one; /* cookie, second word */
334 *p++ = xdr_one; /* entry len */
335 memcpy(p, ".\0\0\0", 4); /* entry */
337 *p++ = xdr_one; /* bitmap length */
338 *p++ = htonl(attrs); /* bitmap */
339 *p++ = htonl(12); /* attribute buffer length */
340 *p++ = htonl(NF4DIR);
341 p = xdr_encode_hyper(p, NFS_FILEID(d_inode(dentry)));
344 *p++ = xdr_one; /* next */
345 *p++ = xdr_zero; /* cookie, first word */
346 *p++ = xdr_two; /* cookie, second word */
347 *p++ = xdr_two; /* entry len */
348 memcpy(p, "..\0\0", 4); /* entry */
350 *p++ = xdr_one; /* bitmap length */
351 *p++ = htonl(attrs); /* bitmap */
352 *p++ = htonl(12); /* attribute buffer length */
353 *p++ = htonl(NF4DIR);
354 p = xdr_encode_hyper(p, NFS_FILEID(d_inode(dentry->d_parent)));
356 readdir->pgbase = (char *)p - (char *)start;
357 readdir->count -= readdir->pgbase;
358 kunmap_atomic(start);
361 static void nfs4_test_and_free_stateid(struct nfs_server *server,
362 nfs4_stateid *stateid,
363 const struct cred *cred)
365 const struct nfs4_minor_version_ops *ops = server->nfs_client->cl_mvops;
367 ops->test_and_free_expired(server, stateid, cred);
370 static void __nfs4_free_revoked_stateid(struct nfs_server *server,
371 nfs4_stateid *stateid,
372 const struct cred *cred)
374 stateid->type = NFS4_REVOKED_STATEID_TYPE;
375 nfs4_test_and_free_stateid(server, stateid, cred);
378 static void nfs4_free_revoked_stateid(struct nfs_server *server,
379 const nfs4_stateid *stateid,
380 const struct cred *cred)
384 nfs4_stateid_copy(&tmp, stateid);
385 __nfs4_free_revoked_stateid(server, &tmp, cred);
388 static long nfs4_update_delay(long *timeout)
392 return NFS4_POLL_RETRY_MAX;
394 *timeout = NFS4_POLL_RETRY_MIN;
395 if (*timeout > NFS4_POLL_RETRY_MAX)
396 *timeout = NFS4_POLL_RETRY_MAX;
402 static int nfs4_delay_killable(long *timeout)
406 freezable_schedule_timeout_killable_unsafe(
407 nfs4_update_delay(timeout));
408 if (!__fatal_signal_pending(current))
413 static int nfs4_delay_interruptible(long *timeout)
417 freezable_schedule_timeout_interruptible(nfs4_update_delay(timeout));
418 if (!signal_pending(current))
420 return __fatal_signal_pending(current) ? -EINTR :-ERESTARTSYS;
423 static int nfs4_delay(long *timeout, bool interruptible)
426 return nfs4_delay_interruptible(timeout);
427 return nfs4_delay_killable(timeout);
430 static const nfs4_stateid *
431 nfs4_recoverable_stateid(const nfs4_stateid *stateid)
435 switch (stateid->type) {
436 case NFS4_OPEN_STATEID_TYPE:
437 case NFS4_LOCK_STATEID_TYPE:
438 case NFS4_DELEGATION_STATEID_TYPE:
446 /* This is the error handling routine for processes that are allowed
449 static int nfs4_do_handle_exception(struct nfs_server *server,
450 int errorcode, struct nfs4_exception *exception)
452 struct nfs_client *clp = server->nfs_client;
453 struct nfs4_state *state = exception->state;
454 const nfs4_stateid *stateid;
455 struct inode *inode = exception->inode;
458 exception->delay = 0;
459 exception->recovering = 0;
460 exception->retry = 0;
462 stateid = nfs4_recoverable_stateid(exception->stateid);
463 if (stateid == NULL && state != NULL)
464 stateid = nfs4_recoverable_stateid(&state->stateid);
469 case -NFS4ERR_BADHANDLE:
471 if (inode != NULL && S_ISREG(inode->i_mode))
472 pnfs_destroy_layout(NFS_I(inode));
474 case -NFS4ERR_DELEG_REVOKED:
475 case -NFS4ERR_ADMIN_REVOKED:
476 case -NFS4ERR_EXPIRED:
477 case -NFS4ERR_BAD_STATEID:
478 case -NFS4ERR_PARTNER_NO_AUTH:
479 if (inode != NULL && stateid != NULL) {
480 nfs_inode_find_state_and_recover(inode,
482 goto wait_on_recovery;
485 case -NFS4ERR_OPENMODE:
489 err = nfs_async_inode_return_delegation(inode,
492 goto wait_on_recovery;
493 if (stateid != NULL && stateid->type == NFS4_DELEGATION_STATEID_TYPE) {
494 exception->retry = 1;
500 ret = nfs4_schedule_stateid_recovery(server, state);
503 goto wait_on_recovery;
504 case -NFS4ERR_STALE_STATEID:
505 case -NFS4ERR_STALE_CLIENTID:
506 nfs4_schedule_lease_recovery(clp);
507 goto wait_on_recovery;
509 ret = nfs4_schedule_migration_recovery(server);
512 goto wait_on_recovery;
513 case -NFS4ERR_LEASE_MOVED:
514 nfs4_schedule_lease_moved_recovery(clp);
515 goto wait_on_recovery;
516 #if defined(CONFIG_NFS_V4_1)
517 case -NFS4ERR_BADSESSION:
518 case -NFS4ERR_BADSLOT:
519 case -NFS4ERR_BAD_HIGH_SLOT:
520 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION:
521 case -NFS4ERR_DEADSESSION:
522 case -NFS4ERR_SEQ_FALSE_RETRY:
523 case -NFS4ERR_SEQ_MISORDERED:
524 /* Handled in nfs41_sequence_process() */
525 goto wait_on_recovery;
526 #endif /* defined(CONFIG_NFS_V4_1) */
527 case -NFS4ERR_FILE_OPEN:
528 if (exception->timeout > HZ) {
529 /* We have retried a decent amount, time to
537 nfs_inc_server_stats(server, NFSIOS_DELAY);
540 case -NFS4ERR_LAYOUTTRYLATER:
541 case -NFS4ERR_RECALLCONFLICT:
542 exception->delay = 1;
545 case -NFS4ERR_RETRY_UNCACHED_REP:
546 case -NFS4ERR_OLD_STATEID:
547 exception->retry = 1;
549 case -NFS4ERR_BADOWNER:
550 /* The following works around a Linux server bug! */
551 case -NFS4ERR_BADNAME:
552 if (server->caps & NFS_CAP_UIDGID_NOMAP) {
553 server->caps &= ~NFS_CAP_UIDGID_NOMAP;
554 exception->retry = 1;
555 printk(KERN_WARNING "NFS: v4 server %s "
556 "does not accept raw "
558 "Reenabling the idmapper.\n",
559 server->nfs_client->cl_hostname);
562 /* We failed to handle the error */
563 return nfs4_map_errors(ret);
565 exception->recovering = 1;
569 /* This is the error handling routine for processes that are allowed
572 int nfs4_handle_exception(struct nfs_server *server, int errorcode, struct nfs4_exception *exception)
574 struct nfs_client *clp = server->nfs_client;
577 ret = nfs4_do_handle_exception(server, errorcode, exception);
578 if (exception->delay) {
579 ret = nfs4_delay(&exception->timeout,
580 exception->interruptible);
583 if (exception->recovering) {
584 ret = nfs4_wait_clnt_recover(clp);
585 if (test_bit(NFS_MIG_FAILED, &server->mig_status))
592 exception->retry = 1;
597 nfs4_async_handle_exception(struct rpc_task *task, struct nfs_server *server,
598 int errorcode, struct nfs4_exception *exception)
600 struct nfs_client *clp = server->nfs_client;
603 ret = nfs4_do_handle_exception(server, errorcode, exception);
604 if (exception->delay) {
605 rpc_delay(task, nfs4_update_delay(&exception->timeout));
608 if (exception->recovering) {
609 rpc_sleep_on(&clp->cl_rpcwaitq, task, NULL);
610 if (test_bit(NFS4CLNT_MANAGER_RUNNING, &clp->cl_state) == 0)
611 rpc_wake_up_queued_task(&clp->cl_rpcwaitq, task);
614 if (test_bit(NFS_MIG_FAILED, &server->mig_status))
619 exception->retry = 1;
621 * For NFS4ERR_MOVED, the client transport will need to
622 * be recomputed after migration recovery has completed.
624 if (errorcode == -NFS4ERR_MOVED)
625 rpc_task_release_transport(task);
631 nfs4_async_handle_error(struct rpc_task *task, struct nfs_server *server,
632 struct nfs4_state *state, long *timeout)
634 struct nfs4_exception exception = {
638 if (task->tk_status >= 0)
641 exception.timeout = *timeout;
642 task->tk_status = nfs4_async_handle_exception(task, server,
645 if (exception.delay && timeout)
646 *timeout = exception.timeout;
653 * Return 'true' if 'clp' is using an rpc_client that is integrity protected
654 * or 'false' otherwise.
656 static bool _nfs4_is_integrity_protected(struct nfs_client *clp)
658 rpc_authflavor_t flavor = clp->cl_rpcclient->cl_auth->au_flavor;
659 return (flavor == RPC_AUTH_GSS_KRB5I) || (flavor == RPC_AUTH_GSS_KRB5P);
662 static void do_renew_lease(struct nfs_client *clp, unsigned long timestamp)
664 spin_lock(&clp->cl_lock);
665 if (time_before(clp->cl_last_renewal,timestamp))
666 clp->cl_last_renewal = timestamp;
667 spin_unlock(&clp->cl_lock);
670 static void renew_lease(const struct nfs_server *server, unsigned long timestamp)
672 struct nfs_client *clp = server->nfs_client;
674 if (!nfs4_has_session(clp))
675 do_renew_lease(clp, timestamp);
678 struct nfs4_call_sync_data {
679 const struct nfs_server *seq_server;
680 struct nfs4_sequence_args *seq_args;
681 struct nfs4_sequence_res *seq_res;
684 void nfs4_init_sequence(struct nfs4_sequence_args *args,
685 struct nfs4_sequence_res *res, int cache_reply,
688 args->sa_slot = NULL;
689 args->sa_cache_this = cache_reply;
690 args->sa_privileged = privileged;
695 static void nfs40_sequence_free_slot(struct nfs4_sequence_res *res)
697 struct nfs4_slot *slot = res->sr_slot;
698 struct nfs4_slot_table *tbl;
701 spin_lock(&tbl->slot_tbl_lock);
702 if (!nfs41_wake_and_assign_slot(tbl, slot))
703 nfs4_free_slot(tbl, slot);
704 spin_unlock(&tbl->slot_tbl_lock);
709 static int nfs40_sequence_done(struct rpc_task *task,
710 struct nfs4_sequence_res *res)
712 if (res->sr_slot != NULL)
713 nfs40_sequence_free_slot(res);
717 #if defined(CONFIG_NFS_V4_1)
719 static void nfs41_release_slot(struct nfs4_slot *slot)
721 struct nfs4_session *session;
722 struct nfs4_slot_table *tbl;
723 bool send_new_highest_used_slotid = false;
728 session = tbl->session;
730 /* Bump the slot sequence number */
735 spin_lock(&tbl->slot_tbl_lock);
736 /* Be nice to the server: try to ensure that the last transmitted
737 * value for highest_user_slotid <= target_highest_slotid
739 if (tbl->highest_used_slotid > tbl->target_highest_slotid)
740 send_new_highest_used_slotid = true;
742 if (nfs41_wake_and_assign_slot(tbl, slot)) {
743 send_new_highest_used_slotid = false;
746 nfs4_free_slot(tbl, slot);
748 if (tbl->highest_used_slotid != NFS4_NO_SLOT)
749 send_new_highest_used_slotid = false;
751 spin_unlock(&tbl->slot_tbl_lock);
752 if (send_new_highest_used_slotid)
753 nfs41_notify_server(session->clp);
754 if (waitqueue_active(&tbl->slot_waitq))
755 wake_up_all(&tbl->slot_waitq);
758 static void nfs41_sequence_free_slot(struct nfs4_sequence_res *res)
760 nfs41_release_slot(res->sr_slot);
764 static void nfs4_slot_sequence_record_sent(struct nfs4_slot *slot,
767 if ((s32)(seqnr - slot->seq_nr_highest_sent) > 0)
768 slot->seq_nr_highest_sent = seqnr;
770 static void nfs4_slot_sequence_acked(struct nfs4_slot *slot,
773 slot->seq_nr_highest_sent = seqnr;
774 slot->seq_nr_last_acked = seqnr;
777 static int nfs41_sequence_process(struct rpc_task *task,
778 struct nfs4_sequence_res *res)
780 struct nfs4_session *session;
781 struct nfs4_slot *slot = res->sr_slot;
782 struct nfs_client *clp;
788 /* don't increment the sequence number if the task wasn't sent */
789 if (!RPC_WAS_SENT(task) || slot->seq_done)
792 session = slot->table->session;
794 trace_nfs4_sequence_done(session, res);
796 status = res->sr_status;
797 if (task->tk_status == -NFS4ERR_DEADSESSION)
798 status = -NFS4ERR_DEADSESSION;
800 /* Check the SEQUENCE operation status */
803 /* Mark this sequence number as having been acked */
804 nfs4_slot_sequence_acked(slot, slot->seq_nr);
805 /* Update the slot's sequence and clientid lease timer */
808 do_renew_lease(clp, res->sr_timestamp);
809 /* Check sequence flags */
810 nfs41_handle_sequence_flag_errors(clp, res->sr_status_flags,
812 nfs41_update_target_slotid(slot->table, slot, res);
816 * sr_status remains 1 if an RPC level error occurred.
817 * The server may or may not have processed the sequence
820 nfs4_slot_sequence_record_sent(slot, slot->seq_nr);
824 /* The server detected a resend of the RPC call and
825 * returned NFS4ERR_DELAY as per Section 2.10.6.2
828 dprintk("%s: slot=%u seq=%u: Operation in progress\n",
832 nfs4_slot_sequence_acked(slot, slot->seq_nr);
834 case -NFS4ERR_RETRY_UNCACHED_REP:
835 case -NFS4ERR_SEQ_FALSE_RETRY:
837 * The server thinks we tried to replay a request.
838 * Retry the call after bumping the sequence ID.
840 nfs4_slot_sequence_acked(slot, slot->seq_nr);
842 case -NFS4ERR_BADSLOT:
844 * The slot id we used was probably retired. Try again
845 * using a different slot id.
847 if (slot->slot_nr < slot->table->target_highest_slotid)
848 goto session_recover;
850 case -NFS4ERR_SEQ_MISORDERED:
851 nfs4_slot_sequence_record_sent(slot, slot->seq_nr);
853 * Were one or more calls using this slot interrupted?
854 * If the server never received the request, then our
855 * transmitted slot sequence number may be too high.
857 if ((s32)(slot->seq_nr - slot->seq_nr_last_acked) > 1) {
863 * A retry might be sent while the original request is
864 * still in progress on the replier. The replier SHOULD
865 * deal with the issue by returning NFS4ERR_DELAY as the
866 * reply to SEQUENCE or CB_SEQUENCE operation, but
867 * implementations MAY return NFS4ERR_SEQ_MISORDERED.
869 * Restart the search after a delay.
871 slot->seq_nr = slot->seq_nr_highest_sent;
873 case -NFS4ERR_BADSESSION:
874 case -NFS4ERR_DEADSESSION:
875 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION:
876 goto session_recover;
878 /* Just update the slot sequence no. */
882 /* The session may be reset by one of the error handlers. */
883 dprintk("%s: Error %d free the slot \n", __func__, res->sr_status);
887 nfs4_schedule_session_recovery(session, status);
888 dprintk("%s ERROR: %d Reset session\n", __func__, status);
889 nfs41_sequence_free_slot(res);
894 if (rpc_restart_call_prepare(task)) {
895 nfs41_sequence_free_slot(res);
901 if (!rpc_restart_call(task))
903 rpc_delay(task, NFS4_POLL_RETRY_MAX);
907 int nfs41_sequence_done(struct rpc_task *task, struct nfs4_sequence_res *res)
909 if (!nfs41_sequence_process(task, res))
911 if (res->sr_slot != NULL)
912 nfs41_sequence_free_slot(res);
916 EXPORT_SYMBOL_GPL(nfs41_sequence_done);
918 static int nfs4_sequence_process(struct rpc_task *task, struct nfs4_sequence_res *res)
920 if (res->sr_slot == NULL)
922 if (res->sr_slot->table->session != NULL)
923 return nfs41_sequence_process(task, res);
924 return nfs40_sequence_done(task, res);
927 static void nfs4_sequence_free_slot(struct nfs4_sequence_res *res)
929 if (res->sr_slot != NULL) {
930 if (res->sr_slot->table->session != NULL)
931 nfs41_sequence_free_slot(res);
933 nfs40_sequence_free_slot(res);
937 int nfs4_sequence_done(struct rpc_task *task, struct nfs4_sequence_res *res)
939 if (res->sr_slot == NULL)
941 if (!res->sr_slot->table->session)
942 return nfs40_sequence_done(task, res);
943 return nfs41_sequence_done(task, res);
945 EXPORT_SYMBOL_GPL(nfs4_sequence_done);
947 static void nfs41_call_sync_prepare(struct rpc_task *task, void *calldata)
949 struct nfs4_call_sync_data *data = calldata;
951 dprintk("--> %s data->seq_server %p\n", __func__, data->seq_server);
953 nfs4_setup_sequence(data->seq_server->nfs_client,
954 data->seq_args, data->seq_res, task);
957 static void nfs41_call_sync_done(struct rpc_task *task, void *calldata)
959 struct nfs4_call_sync_data *data = calldata;
961 nfs41_sequence_done(task, data->seq_res);
964 static const struct rpc_call_ops nfs41_call_sync_ops = {
965 .rpc_call_prepare = nfs41_call_sync_prepare,
966 .rpc_call_done = nfs41_call_sync_done,
969 #else /* !CONFIG_NFS_V4_1 */
971 static int nfs4_sequence_process(struct rpc_task *task, struct nfs4_sequence_res *res)
973 return nfs40_sequence_done(task, res);
976 static void nfs4_sequence_free_slot(struct nfs4_sequence_res *res)
978 if (res->sr_slot != NULL)
979 nfs40_sequence_free_slot(res);
982 int nfs4_sequence_done(struct rpc_task *task,
983 struct nfs4_sequence_res *res)
985 return nfs40_sequence_done(task, res);
987 EXPORT_SYMBOL_GPL(nfs4_sequence_done);
989 #endif /* !CONFIG_NFS_V4_1 */
991 static void nfs41_sequence_res_init(struct nfs4_sequence_res *res)
993 res->sr_timestamp = jiffies;
994 res->sr_status_flags = 0;
999 void nfs4_sequence_attach_slot(struct nfs4_sequence_args *args,
1000 struct nfs4_sequence_res *res,
1001 struct nfs4_slot *slot)
1005 slot->privileged = args->sa_privileged ? 1 : 0;
1006 args->sa_slot = slot;
1008 res->sr_slot = slot;
1011 int nfs4_setup_sequence(struct nfs_client *client,
1012 struct nfs4_sequence_args *args,
1013 struct nfs4_sequence_res *res,
1014 struct rpc_task *task)
1016 struct nfs4_session *session = nfs4_get_session(client);
1017 struct nfs4_slot_table *tbl = client->cl_slot_tbl;
1018 struct nfs4_slot *slot;
1020 /* slot already allocated? */
1021 if (res->sr_slot != NULL)
1025 tbl = &session->fc_slot_table;
1027 spin_lock(&tbl->slot_tbl_lock);
1028 /* The state manager will wait until the slot table is empty */
1029 if (nfs4_slot_tbl_draining(tbl) && !args->sa_privileged)
1032 slot = nfs4_alloc_slot(tbl);
1034 if (slot == ERR_PTR(-ENOMEM))
1035 goto out_sleep_timeout;
1038 spin_unlock(&tbl->slot_tbl_lock);
1040 nfs4_sequence_attach_slot(args, res, slot);
1042 trace_nfs4_setup_sequence(session, args);
1044 nfs41_sequence_res_init(res);
1045 rpc_call_start(task);
1048 /* Try again in 1/4 second */
1049 if (args->sa_privileged)
1050 rpc_sleep_on_priority_timeout(&tbl->slot_tbl_waitq, task,
1051 jiffies + (HZ >> 2), RPC_PRIORITY_PRIVILEGED);
1053 rpc_sleep_on_timeout(&tbl->slot_tbl_waitq, task,
1054 NULL, jiffies + (HZ >> 2));
1055 spin_unlock(&tbl->slot_tbl_lock);
1058 if (args->sa_privileged)
1059 rpc_sleep_on_priority(&tbl->slot_tbl_waitq, task,
1060 RPC_PRIORITY_PRIVILEGED);
1062 rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL);
1063 spin_unlock(&tbl->slot_tbl_lock);
1066 EXPORT_SYMBOL_GPL(nfs4_setup_sequence);
1068 static void nfs40_call_sync_prepare(struct rpc_task *task, void *calldata)
1070 struct nfs4_call_sync_data *data = calldata;
1071 nfs4_setup_sequence(data->seq_server->nfs_client,
1072 data->seq_args, data->seq_res, task);
1075 static void nfs40_call_sync_done(struct rpc_task *task, void *calldata)
1077 struct nfs4_call_sync_data *data = calldata;
1078 nfs4_sequence_done(task, data->seq_res);
1081 static const struct rpc_call_ops nfs40_call_sync_ops = {
1082 .rpc_call_prepare = nfs40_call_sync_prepare,
1083 .rpc_call_done = nfs40_call_sync_done,
1086 static int nfs4_call_sync_custom(struct rpc_task_setup *task_setup)
1089 struct rpc_task *task;
1091 task = rpc_run_task(task_setup);
1093 return PTR_ERR(task);
1095 ret = task->tk_status;
1100 static int nfs4_do_call_sync(struct rpc_clnt *clnt,
1101 struct nfs_server *server,
1102 struct rpc_message *msg,
1103 struct nfs4_sequence_args *args,
1104 struct nfs4_sequence_res *res,
1105 unsigned short task_flags)
1107 struct nfs_client *clp = server->nfs_client;
1108 struct nfs4_call_sync_data data = {
1109 .seq_server = server,
1113 struct rpc_task_setup task_setup = {
1116 .callback_ops = clp->cl_mvops->call_sync_ops,
1117 .callback_data = &data,
1118 .flags = task_flags,
1121 return nfs4_call_sync_custom(&task_setup);
1124 static int nfs4_call_sync_sequence(struct rpc_clnt *clnt,
1125 struct nfs_server *server,
1126 struct rpc_message *msg,
1127 struct nfs4_sequence_args *args,
1128 struct nfs4_sequence_res *res)
1130 return nfs4_do_call_sync(clnt, server, msg, args, res, 0);
1134 int nfs4_call_sync(struct rpc_clnt *clnt,
1135 struct nfs_server *server,
1136 struct rpc_message *msg,
1137 struct nfs4_sequence_args *args,
1138 struct nfs4_sequence_res *res,
1141 nfs4_init_sequence(args, res, cache_reply, 0);
1142 return nfs4_call_sync_sequence(clnt, server, msg, args, res);
1146 nfs4_inc_nlink_locked(struct inode *inode)
1148 NFS_I(inode)->cache_validity |= NFS_INO_INVALID_OTHER;
1153 nfs4_dec_nlink_locked(struct inode *inode)
1155 NFS_I(inode)->cache_validity |= NFS_INO_INVALID_OTHER;
1160 update_changeattr_locked(struct inode *dir, struct nfs4_change_info *cinfo,
1161 unsigned long timestamp, unsigned long cache_validity)
1163 struct nfs_inode *nfsi = NFS_I(dir);
1165 nfsi->cache_validity |= NFS_INO_INVALID_CTIME
1166 | NFS_INO_INVALID_MTIME
1167 | NFS_INO_INVALID_DATA
1169 if (cinfo->atomic && cinfo->before == inode_peek_iversion_raw(dir)) {
1170 nfsi->cache_validity &= ~NFS_INO_REVAL_PAGECACHE;
1171 nfsi->attrtimeo_timestamp = jiffies;
1173 nfs_force_lookup_revalidate(dir);
1174 if (cinfo->before != inode_peek_iversion_raw(dir))
1175 nfsi->cache_validity |= NFS_INO_INVALID_ACCESS |
1176 NFS_INO_INVALID_ACL;
1178 inode_set_iversion_raw(dir, cinfo->after);
1179 nfsi->read_cache_jiffies = timestamp;
1180 nfsi->attr_gencount = nfs_inc_attr_generation_counter();
1181 nfsi->cache_validity &= ~NFS_INO_INVALID_CHANGE;
1182 nfs_fscache_invalidate(dir);
1186 update_changeattr(struct inode *dir, struct nfs4_change_info *cinfo,
1187 unsigned long timestamp, unsigned long cache_validity)
1189 spin_lock(&dir->i_lock);
1190 update_changeattr_locked(dir, cinfo, timestamp, cache_validity);
1191 spin_unlock(&dir->i_lock);
1194 struct nfs4_open_createattrs {
1195 struct nfs4_label *label;
1196 struct iattr *sattr;
1197 const __u32 verf[2];
1200 static bool nfs4_clear_cap_atomic_open_v1(struct nfs_server *server,
1201 int err, struct nfs4_exception *exception)
1205 if (!(server->caps & NFS_CAP_ATOMIC_OPEN_V1))
1207 server->caps &= ~NFS_CAP_ATOMIC_OPEN_V1;
1208 exception->retry = 1;
1212 static fmode_t _nfs4_ctx_to_accessmode(const struct nfs_open_context *ctx)
1214 return ctx->mode & (FMODE_READ|FMODE_WRITE|FMODE_EXEC);
1217 static fmode_t _nfs4_ctx_to_openmode(const struct nfs_open_context *ctx)
1219 fmode_t ret = ctx->mode & (FMODE_READ|FMODE_WRITE);
1221 return (ctx->mode & FMODE_EXEC) ? FMODE_READ | ret : ret;
1225 nfs4_map_atomic_open_share(struct nfs_server *server,
1226 fmode_t fmode, int openflags)
1230 switch (fmode & (FMODE_READ | FMODE_WRITE)) {
1232 res = NFS4_SHARE_ACCESS_READ;
1235 res = NFS4_SHARE_ACCESS_WRITE;
1237 case FMODE_READ|FMODE_WRITE:
1238 res = NFS4_SHARE_ACCESS_BOTH;
1240 if (!(server->caps & NFS_CAP_ATOMIC_OPEN_V1))
1242 /* Want no delegation if we're using O_DIRECT */
1243 if (openflags & O_DIRECT)
1244 res |= NFS4_SHARE_WANT_NO_DELEG;
1249 static enum open_claim_type4
1250 nfs4_map_atomic_open_claim(struct nfs_server *server,
1251 enum open_claim_type4 claim)
1253 if (server->caps & NFS_CAP_ATOMIC_OPEN_V1)
1258 case NFS4_OPEN_CLAIM_FH:
1259 return NFS4_OPEN_CLAIM_NULL;
1260 case NFS4_OPEN_CLAIM_DELEG_CUR_FH:
1261 return NFS4_OPEN_CLAIM_DELEGATE_CUR;
1262 case NFS4_OPEN_CLAIM_DELEG_PREV_FH:
1263 return NFS4_OPEN_CLAIM_DELEGATE_PREV;
1267 static void nfs4_init_opendata_res(struct nfs4_opendata *p)
1269 p->o_res.f_attr = &p->f_attr;
1270 p->o_res.f_label = p->f_label;
1271 p->o_res.seqid = p->o_arg.seqid;
1272 p->c_res.seqid = p->c_arg.seqid;
1273 p->o_res.server = p->o_arg.server;
1274 p->o_res.access_request = p->o_arg.access;
1275 nfs_fattr_init(&p->f_attr);
1276 nfs_fattr_init_names(&p->f_attr, &p->owner_name, &p->group_name);
1279 static struct nfs4_opendata *nfs4_opendata_alloc(struct dentry *dentry,
1280 struct nfs4_state_owner *sp, fmode_t fmode, int flags,
1281 const struct nfs4_open_createattrs *c,
1282 enum open_claim_type4 claim,
1285 struct dentry *parent = dget_parent(dentry);
1286 struct inode *dir = d_inode(parent);
1287 struct nfs_server *server = NFS_SERVER(dir);
1288 struct nfs_seqid *(*alloc_seqid)(struct nfs_seqid_counter *, gfp_t);
1289 struct nfs4_label *label = (c != NULL) ? c->label : NULL;
1290 struct nfs4_opendata *p;
1292 p = kzalloc(sizeof(*p), gfp_mask);
1296 p->f_label = nfs4_label_alloc(server, gfp_mask);
1297 if (IS_ERR(p->f_label))
1300 p->a_label = nfs4_label_alloc(server, gfp_mask);
1301 if (IS_ERR(p->a_label))
1304 alloc_seqid = server->nfs_client->cl_mvops->alloc_seqid;
1305 p->o_arg.seqid = alloc_seqid(&sp->so_seqid, gfp_mask);
1306 if (IS_ERR(p->o_arg.seqid))
1307 goto err_free_label;
1308 nfs_sb_active(dentry->d_sb);
1309 p->dentry = dget(dentry);
1312 atomic_inc(&sp->so_count);
1313 p->o_arg.open_flags = flags;
1314 p->o_arg.fmode = fmode & (FMODE_READ|FMODE_WRITE);
1315 p->o_arg.claim = nfs4_map_atomic_open_claim(server, claim);
1316 p->o_arg.share_access = nfs4_map_atomic_open_share(server,
1318 if (flags & O_CREAT) {
1319 p->o_arg.umask = current_umask();
1320 p->o_arg.label = nfs4_label_copy(p->a_label, label);
1321 if (c->sattr != NULL && c->sattr->ia_valid != 0) {
1322 p->o_arg.u.attrs = &p->attrs;
1323 memcpy(&p->attrs, c->sattr, sizeof(p->attrs));
1325 memcpy(p->o_arg.u.verifier.data, c->verf,
1326 sizeof(p->o_arg.u.verifier.data));
1329 /* don't put an ACCESS op in OPEN compound if O_EXCL, because ACCESS
1330 * will return permission denied for all bits until close */
1331 if (!(flags & O_EXCL)) {
1332 /* ask server to check for all possible rights as results
1334 switch (p->o_arg.claim) {
1337 case NFS4_OPEN_CLAIM_NULL:
1338 case NFS4_OPEN_CLAIM_FH:
1339 p->o_arg.access = NFS4_ACCESS_READ |
1340 NFS4_ACCESS_MODIFY |
1341 NFS4_ACCESS_EXTEND |
1342 NFS4_ACCESS_EXECUTE;
1345 p->o_arg.clientid = server->nfs_client->cl_clientid;
1346 p->o_arg.id.create_time = ktime_to_ns(sp->so_seqid.create_time);
1347 p->o_arg.id.uniquifier = sp->so_seqid.owner_id;
1348 p->o_arg.name = &dentry->d_name;
1349 p->o_arg.server = server;
1350 p->o_arg.bitmask = nfs4_bitmask(server, label);
1351 p->o_arg.open_bitmap = &nfs4_fattr_bitmap[0];
1352 switch (p->o_arg.claim) {
1353 case NFS4_OPEN_CLAIM_NULL:
1354 case NFS4_OPEN_CLAIM_DELEGATE_CUR:
1355 case NFS4_OPEN_CLAIM_DELEGATE_PREV:
1356 p->o_arg.fh = NFS_FH(dir);
1358 case NFS4_OPEN_CLAIM_PREVIOUS:
1359 case NFS4_OPEN_CLAIM_FH:
1360 case NFS4_OPEN_CLAIM_DELEG_CUR_FH:
1361 case NFS4_OPEN_CLAIM_DELEG_PREV_FH:
1362 p->o_arg.fh = NFS_FH(d_inode(dentry));
1364 p->c_arg.fh = &p->o_res.fh;
1365 p->c_arg.stateid = &p->o_res.stateid;
1366 p->c_arg.seqid = p->o_arg.seqid;
1367 nfs4_init_opendata_res(p);
1368 kref_init(&p->kref);
1372 nfs4_label_free(p->a_label);
1374 nfs4_label_free(p->f_label);
1382 static void nfs4_opendata_free(struct kref *kref)
1384 struct nfs4_opendata *p = container_of(kref,
1385 struct nfs4_opendata, kref);
1386 struct super_block *sb = p->dentry->d_sb;
1388 nfs4_lgopen_release(p->lgp);
1389 nfs_free_seqid(p->o_arg.seqid);
1390 nfs4_sequence_free_slot(&p->o_res.seq_res);
1391 if (p->state != NULL)
1392 nfs4_put_open_state(p->state);
1393 nfs4_put_state_owner(p->owner);
1395 nfs4_label_free(p->a_label);
1396 nfs4_label_free(p->f_label);
1400 nfs_sb_deactive(sb);
1401 nfs_fattr_free_names(&p->f_attr);
1402 kfree(p->f_attr.mdsthreshold);
1406 static void nfs4_opendata_put(struct nfs4_opendata *p)
1409 kref_put(&p->kref, nfs4_opendata_free);
1412 static bool nfs4_mode_match_open_stateid(struct nfs4_state *state,
1415 switch(fmode & (FMODE_READ|FMODE_WRITE)) {
1416 case FMODE_READ|FMODE_WRITE:
1417 return state->n_rdwr != 0;
1419 return state->n_wronly != 0;
1421 return state->n_rdonly != 0;
1427 static int can_open_cached(struct nfs4_state *state, fmode_t mode,
1428 int open_mode, enum open_claim_type4 claim)
1432 if (open_mode & (O_EXCL|O_TRUNC))
1435 case NFS4_OPEN_CLAIM_NULL:
1436 case NFS4_OPEN_CLAIM_FH:
1441 switch (mode & (FMODE_READ|FMODE_WRITE)) {
1443 ret |= test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0
1444 && state->n_rdonly != 0;
1447 ret |= test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0
1448 && state->n_wronly != 0;
1450 case FMODE_READ|FMODE_WRITE:
1451 ret |= test_bit(NFS_O_RDWR_STATE, &state->flags) != 0
1452 && state->n_rdwr != 0;
1458 static int can_open_delegated(struct nfs_delegation *delegation, fmode_t fmode,
1459 enum open_claim_type4 claim)
1461 if (delegation == NULL)
1463 if ((delegation->type & fmode) != fmode)
1466 case NFS4_OPEN_CLAIM_NULL:
1467 case NFS4_OPEN_CLAIM_FH:
1469 case NFS4_OPEN_CLAIM_PREVIOUS:
1470 if (!test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags))
1476 nfs_mark_delegation_referenced(delegation);
1480 static void update_open_stateflags(struct nfs4_state *state, fmode_t fmode)
1489 case FMODE_READ|FMODE_WRITE:
1492 nfs4_state_set_mode_locked(state, state->state | fmode);
1495 #ifdef CONFIG_NFS_V4_1
1496 static bool nfs_open_stateid_recover_openmode(struct nfs4_state *state)
1498 if (state->n_rdonly && !test_bit(NFS_O_RDONLY_STATE, &state->flags))
1500 if (state->n_wronly && !test_bit(NFS_O_WRONLY_STATE, &state->flags))
1502 if (state->n_rdwr && !test_bit(NFS_O_RDWR_STATE, &state->flags))
1506 #endif /* CONFIG_NFS_V4_1 */
1508 static void nfs_state_log_update_open_stateid(struct nfs4_state *state)
1510 if (test_and_clear_bit(NFS_STATE_CHANGE_WAIT, &state->flags))
1511 wake_up_all(&state->waitq);
1514 static void nfs_state_log_out_of_order_open_stateid(struct nfs4_state *state,
1515 const nfs4_stateid *stateid)
1517 u32 state_seqid = be32_to_cpu(state->open_stateid.seqid);
1518 u32 stateid_seqid = be32_to_cpu(stateid->seqid);
1520 if (stateid_seqid == state_seqid + 1U ||
1521 (stateid_seqid == 1U && state_seqid == 0xffffffffU))
1522 nfs_state_log_update_open_stateid(state);
1524 set_bit(NFS_STATE_CHANGE_WAIT, &state->flags);
1527 static void nfs_test_and_clear_all_open_stateid(struct nfs4_state *state)
1529 struct nfs_client *clp = state->owner->so_server->nfs_client;
1530 bool need_recover = false;
1532 if (test_and_clear_bit(NFS_O_RDONLY_STATE, &state->flags) && state->n_rdonly)
1533 need_recover = true;
1534 if (test_and_clear_bit(NFS_O_WRONLY_STATE, &state->flags) && state->n_wronly)
1535 need_recover = true;
1536 if (test_and_clear_bit(NFS_O_RDWR_STATE, &state->flags) && state->n_rdwr)
1537 need_recover = true;
1539 nfs4_state_mark_reclaim_nograce(clp, state);
1543 * Check for whether or not the caller may update the open stateid
1544 * to the value passed in by stateid.
1546 * Note: This function relies heavily on the server implementing
1547 * RFC7530 Section 9.1.4.2, and RFC5661 Section 8.2.2
1549 * i.e. The stateid seqids have to be initialised to 1, and
1550 * are then incremented on every state transition.
1552 static bool nfs_need_update_open_stateid(struct nfs4_state *state,
1553 const nfs4_stateid *stateid)
1555 if (test_bit(NFS_OPEN_STATE, &state->flags) == 0 ||
1556 !nfs4_stateid_match_other(stateid, &state->open_stateid)) {
1557 if (stateid->seqid == cpu_to_be32(1))
1558 nfs_state_log_update_open_stateid(state);
1560 set_bit(NFS_STATE_CHANGE_WAIT, &state->flags);
1564 if (nfs4_stateid_is_newer(stateid, &state->open_stateid)) {
1565 nfs_state_log_out_of_order_open_stateid(state, stateid);
1571 static void nfs_resync_open_stateid_locked(struct nfs4_state *state)
1573 if (!(state->n_wronly || state->n_rdonly || state->n_rdwr))
1575 if (state->n_wronly)
1576 set_bit(NFS_O_WRONLY_STATE, &state->flags);
1577 if (state->n_rdonly)
1578 set_bit(NFS_O_RDONLY_STATE, &state->flags);
1580 set_bit(NFS_O_RDWR_STATE, &state->flags);
1581 set_bit(NFS_OPEN_STATE, &state->flags);
1584 static void nfs_clear_open_stateid_locked(struct nfs4_state *state,
1585 nfs4_stateid *stateid, fmode_t fmode)
1587 clear_bit(NFS_O_RDWR_STATE, &state->flags);
1588 switch (fmode & (FMODE_READ|FMODE_WRITE)) {
1590 clear_bit(NFS_O_RDONLY_STATE, &state->flags);
1593 clear_bit(NFS_O_WRONLY_STATE, &state->flags);
1596 clear_bit(NFS_O_RDONLY_STATE, &state->flags);
1597 clear_bit(NFS_O_WRONLY_STATE, &state->flags);
1598 clear_bit(NFS_OPEN_STATE, &state->flags);
1600 if (stateid == NULL)
1602 /* Handle OPEN+OPEN_DOWNGRADE races */
1603 if (nfs4_stateid_match_other(stateid, &state->open_stateid) &&
1604 !nfs4_stateid_is_newer(stateid, &state->open_stateid)) {
1605 nfs_resync_open_stateid_locked(state);
1608 if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0)
1609 nfs4_stateid_copy(&state->stateid, stateid);
1610 nfs4_stateid_copy(&state->open_stateid, stateid);
1611 trace_nfs4_open_stateid_update(state->inode, stateid, 0);
1613 nfs_state_log_update_open_stateid(state);
1616 static void nfs_clear_open_stateid(struct nfs4_state *state,
1617 nfs4_stateid *arg_stateid,
1618 nfs4_stateid *stateid, fmode_t fmode)
1620 write_seqlock(&state->seqlock);
1621 /* Ignore, if the CLOSE argment doesn't match the current stateid */
1622 if (nfs4_state_match_open_stateid_other(state, arg_stateid))
1623 nfs_clear_open_stateid_locked(state, stateid, fmode);
1624 write_sequnlock(&state->seqlock);
1625 if (test_bit(NFS_STATE_RECLAIM_NOGRACE, &state->flags))
1626 nfs4_schedule_state_manager(state->owner->so_server->nfs_client);
1629 static void nfs_set_open_stateid_locked(struct nfs4_state *state,
1630 const nfs4_stateid *stateid, nfs4_stateid *freeme)
1631 __must_hold(&state->owner->so_lock)
1632 __must_hold(&state->seqlock)
1640 if (!nfs_need_update_open_stateid(state, stateid))
1642 if (!test_bit(NFS_STATE_CHANGE_WAIT, &state->flags))
1646 /* Rely on seqids for serialisation with NFSv4.0 */
1647 if (!nfs4_has_session(NFS_SERVER(state->inode)->nfs_client))
1650 prepare_to_wait(&state->waitq, &wait, TASK_KILLABLE);
1652 * Ensure we process the state changes in the same order
1653 * in which the server processed them by delaying the
1654 * update of the stateid until we are in sequence.
1656 write_sequnlock(&state->seqlock);
1657 spin_unlock(&state->owner->so_lock);
1659 trace_nfs4_open_stateid_update_wait(state->inode, stateid, 0);
1660 if (!signal_pending(current)) {
1661 if (schedule_timeout(5*HZ) == 0)
1667 finish_wait(&state->waitq, &wait);
1669 spin_lock(&state->owner->so_lock);
1670 write_seqlock(&state->seqlock);
1673 if (test_bit(NFS_OPEN_STATE, &state->flags) &&
1674 !nfs4_stateid_match_other(stateid, &state->open_stateid)) {
1675 nfs4_stateid_copy(freeme, &state->open_stateid);
1676 nfs_test_and_clear_all_open_stateid(state);
1679 if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0)
1680 nfs4_stateid_copy(&state->stateid, stateid);
1681 nfs4_stateid_copy(&state->open_stateid, stateid);
1682 trace_nfs4_open_stateid_update(state->inode, stateid, status);
1683 nfs_state_log_update_open_stateid(state);
1686 static void nfs_state_set_open_stateid(struct nfs4_state *state,
1687 const nfs4_stateid *open_stateid,
1689 nfs4_stateid *freeme)
1692 * Protect the call to nfs4_state_set_mode_locked and
1693 * serialise the stateid update
1695 write_seqlock(&state->seqlock);
1696 nfs_set_open_stateid_locked(state, open_stateid, freeme);
1699 set_bit(NFS_O_RDONLY_STATE, &state->flags);
1702 set_bit(NFS_O_WRONLY_STATE, &state->flags);
1704 case FMODE_READ|FMODE_WRITE:
1705 set_bit(NFS_O_RDWR_STATE, &state->flags);
1707 set_bit(NFS_OPEN_STATE, &state->flags);
1708 write_sequnlock(&state->seqlock);
1711 static void nfs_state_clear_open_state_flags(struct nfs4_state *state)
1713 clear_bit(NFS_O_RDWR_STATE, &state->flags);
1714 clear_bit(NFS_O_WRONLY_STATE, &state->flags);
1715 clear_bit(NFS_O_RDONLY_STATE, &state->flags);
1716 clear_bit(NFS_OPEN_STATE, &state->flags);
1719 static void nfs_state_set_delegation(struct nfs4_state *state,
1720 const nfs4_stateid *deleg_stateid,
1724 * Protect the call to nfs4_state_set_mode_locked and
1725 * serialise the stateid update
1727 write_seqlock(&state->seqlock);
1728 nfs4_stateid_copy(&state->stateid, deleg_stateid);
1729 set_bit(NFS_DELEGATED_STATE, &state->flags);
1730 write_sequnlock(&state->seqlock);
1733 static void nfs_state_clear_delegation(struct nfs4_state *state)
1735 write_seqlock(&state->seqlock);
1736 nfs4_stateid_copy(&state->stateid, &state->open_stateid);
1737 clear_bit(NFS_DELEGATED_STATE, &state->flags);
1738 write_sequnlock(&state->seqlock);
1741 int update_open_stateid(struct nfs4_state *state,
1742 const nfs4_stateid *open_stateid,
1743 const nfs4_stateid *delegation,
1746 struct nfs_server *server = NFS_SERVER(state->inode);
1747 struct nfs_client *clp = server->nfs_client;
1748 struct nfs_inode *nfsi = NFS_I(state->inode);
1749 struct nfs_delegation *deleg_cur;
1750 nfs4_stateid freeme = { };
1753 fmode &= (FMODE_READ|FMODE_WRITE);
1756 spin_lock(&state->owner->so_lock);
1757 if (open_stateid != NULL) {
1758 nfs_state_set_open_stateid(state, open_stateid, fmode, &freeme);
1762 deleg_cur = nfs4_get_valid_delegation(state->inode);
1763 if (deleg_cur == NULL)
1766 spin_lock(&deleg_cur->lock);
1767 if (rcu_dereference(nfsi->delegation) != deleg_cur ||
1768 test_bit(NFS_DELEGATION_RETURNING, &deleg_cur->flags) ||
1769 (deleg_cur->type & fmode) != fmode)
1770 goto no_delegation_unlock;
1772 if (delegation == NULL)
1773 delegation = &deleg_cur->stateid;
1774 else if (!nfs4_stateid_match_other(&deleg_cur->stateid, delegation))
1775 goto no_delegation_unlock;
1777 nfs_mark_delegation_referenced(deleg_cur);
1778 nfs_state_set_delegation(state, &deleg_cur->stateid, fmode);
1780 no_delegation_unlock:
1781 spin_unlock(&deleg_cur->lock);
1784 update_open_stateflags(state, fmode);
1785 spin_unlock(&state->owner->so_lock);
1788 if (test_bit(NFS_STATE_RECLAIM_NOGRACE, &state->flags))
1789 nfs4_schedule_state_manager(clp);
1790 if (freeme.type != 0)
1791 nfs4_test_and_free_stateid(server, &freeme,
1792 state->owner->so_cred);
1797 static bool nfs4_update_lock_stateid(struct nfs4_lock_state *lsp,
1798 const nfs4_stateid *stateid)
1800 struct nfs4_state *state = lsp->ls_state;
1803 spin_lock(&state->state_lock);
1804 if (!nfs4_stateid_match_other(stateid, &lsp->ls_stateid))
1806 if (!nfs4_stateid_is_newer(stateid, &lsp->ls_stateid))
1808 nfs4_stateid_copy(&lsp->ls_stateid, stateid);
1811 spin_unlock(&state->state_lock);
1815 static void nfs4_return_incompatible_delegation(struct inode *inode, fmode_t fmode)
1817 struct nfs_delegation *delegation;
1819 fmode &= FMODE_READ|FMODE_WRITE;
1821 delegation = nfs4_get_valid_delegation(inode);
1822 if (delegation == NULL || (delegation->type & fmode) == fmode) {
1827 nfs4_inode_return_delegation(inode);
1830 static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
1832 struct nfs4_state *state = opendata->state;
1833 struct nfs_delegation *delegation;
1834 int open_mode = opendata->o_arg.open_flags;
1835 fmode_t fmode = opendata->o_arg.fmode;
1836 enum open_claim_type4 claim = opendata->o_arg.claim;
1837 nfs4_stateid stateid;
1841 spin_lock(&state->owner->so_lock);
1842 if (can_open_cached(state, fmode, open_mode, claim)) {
1843 update_open_stateflags(state, fmode);
1844 spin_unlock(&state->owner->so_lock);
1845 goto out_return_state;
1847 spin_unlock(&state->owner->so_lock);
1849 delegation = nfs4_get_valid_delegation(state->inode);
1850 if (!can_open_delegated(delegation, fmode, claim)) {
1854 /* Save the delegation */
1855 nfs4_stateid_copy(&stateid, &delegation->stateid);
1857 nfs_release_seqid(opendata->o_arg.seqid);
1858 if (!opendata->is_recover) {
1859 ret = nfs_may_open(state->inode, state->owner->so_cred, open_mode);
1865 /* Try to update the stateid using the delegation */
1866 if (update_open_stateid(state, NULL, &stateid, fmode))
1867 goto out_return_state;
1870 return ERR_PTR(ret);
1872 refcount_inc(&state->count);
1877 nfs4_opendata_check_deleg(struct nfs4_opendata *data, struct nfs4_state *state)
1879 struct nfs_client *clp = NFS_SERVER(state->inode)->nfs_client;
1880 struct nfs_delegation *delegation;
1881 int delegation_flags = 0;
1884 delegation = rcu_dereference(NFS_I(state->inode)->delegation);
1886 delegation_flags = delegation->flags;
1888 switch (data->o_arg.claim) {
1891 case NFS4_OPEN_CLAIM_DELEGATE_CUR:
1892 case NFS4_OPEN_CLAIM_DELEG_CUR_FH:
1893 pr_err_ratelimited("NFS: Broken NFSv4 server %s is "
1894 "returning a delegation for "
1895 "OPEN(CLAIM_DELEGATE_CUR)\n",
1899 if ((delegation_flags & 1UL<<NFS_DELEGATION_NEED_RECLAIM) == 0)
1900 nfs_inode_set_delegation(state->inode,
1901 data->owner->so_cred,
1902 data->o_res.delegation_type,
1903 &data->o_res.delegation,
1904 data->o_res.pagemod_limit);
1906 nfs_inode_reclaim_delegation(state->inode,
1907 data->owner->so_cred,
1908 data->o_res.delegation_type,
1909 &data->o_res.delegation,
1910 data->o_res.pagemod_limit);
1912 if (data->o_res.do_recall)
1913 nfs_async_inode_return_delegation(state->inode,
1914 &data->o_res.delegation);
1918 * Check the inode attributes against the CLAIM_PREVIOUS returned attributes
1919 * and update the nfs4_state.
1921 static struct nfs4_state *
1922 _nfs4_opendata_reclaim_to_nfs4_state(struct nfs4_opendata *data)
1924 struct inode *inode = data->state->inode;
1925 struct nfs4_state *state = data->state;
1928 if (!data->rpc_done) {
1929 if (data->rpc_status)
1930 return ERR_PTR(data->rpc_status);
1931 /* cached opens have already been processed */
1935 ret = nfs_refresh_inode(inode, &data->f_attr);
1937 return ERR_PTR(ret);
1939 if (data->o_res.delegation_type != 0)
1940 nfs4_opendata_check_deleg(data, state);
1942 if (!update_open_stateid(state, &data->o_res.stateid,
1943 NULL, data->o_arg.fmode))
1944 return ERR_PTR(-EAGAIN);
1945 refcount_inc(&state->count);
1950 static struct inode *
1951 nfs4_opendata_get_inode(struct nfs4_opendata *data)
1953 struct inode *inode;
1955 switch (data->o_arg.claim) {
1956 case NFS4_OPEN_CLAIM_NULL:
1957 case NFS4_OPEN_CLAIM_DELEGATE_CUR:
1958 case NFS4_OPEN_CLAIM_DELEGATE_PREV:
1959 if (!(data->f_attr.valid & NFS_ATTR_FATTR))
1960 return ERR_PTR(-EAGAIN);
1961 inode = nfs_fhget(data->dir->d_sb, &data->o_res.fh,
1962 &data->f_attr, data->f_label);
1965 inode = d_inode(data->dentry);
1967 nfs_refresh_inode(inode, &data->f_attr);
1972 static struct nfs4_state *
1973 nfs4_opendata_find_nfs4_state(struct nfs4_opendata *data)
1975 struct nfs4_state *state;
1976 struct inode *inode;
1978 inode = nfs4_opendata_get_inode(data);
1980 return ERR_CAST(inode);
1981 if (data->state != NULL && data->state->inode == inode) {
1982 state = data->state;
1983 refcount_inc(&state->count);
1985 state = nfs4_get_open_state(inode, data->owner);
1988 state = ERR_PTR(-ENOMEM);
1992 static struct nfs4_state *
1993 _nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data)
1995 struct nfs4_state *state;
1997 if (!data->rpc_done) {
1998 state = nfs4_try_open_cached(data);
1999 trace_nfs4_cached_open(data->state);
2003 state = nfs4_opendata_find_nfs4_state(data);
2007 if (data->o_res.delegation_type != 0)
2008 nfs4_opendata_check_deleg(data, state);
2009 if (!update_open_stateid(state, &data->o_res.stateid,
2010 NULL, data->o_arg.fmode)) {
2011 nfs4_put_open_state(state);
2012 state = ERR_PTR(-EAGAIN);
2015 nfs_release_seqid(data->o_arg.seqid);
2019 static struct nfs4_state *
2020 nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data)
2022 struct nfs4_state *ret;
2024 if (data->o_arg.claim == NFS4_OPEN_CLAIM_PREVIOUS)
2025 ret =_nfs4_opendata_reclaim_to_nfs4_state(data);
2027 ret = _nfs4_opendata_to_nfs4_state(data);
2028 nfs4_sequence_free_slot(&data->o_res.seq_res);
2032 static struct nfs_open_context *
2033 nfs4_state_find_open_context_mode(struct nfs4_state *state, fmode_t mode)
2035 struct nfs_inode *nfsi = NFS_I(state->inode);
2036 struct nfs_open_context *ctx;
2039 list_for_each_entry_rcu(ctx, &nfsi->open_files, list) {
2040 if (ctx->state != state)
2042 if ((ctx->mode & mode) != mode)
2044 if (!get_nfs_open_context(ctx))
2050 return ERR_PTR(-ENOENT);
2053 static struct nfs_open_context *
2054 nfs4_state_find_open_context(struct nfs4_state *state)
2056 struct nfs_open_context *ctx;
2058 ctx = nfs4_state_find_open_context_mode(state, FMODE_READ|FMODE_WRITE);
2061 ctx = nfs4_state_find_open_context_mode(state, FMODE_WRITE);
2064 return nfs4_state_find_open_context_mode(state, FMODE_READ);
2067 static struct nfs4_opendata *nfs4_open_recoverdata_alloc(struct nfs_open_context *ctx,
2068 struct nfs4_state *state, enum open_claim_type4 claim)
2070 struct nfs4_opendata *opendata;
2072 opendata = nfs4_opendata_alloc(ctx->dentry, state->owner, 0, 0,
2073 NULL, claim, GFP_NOFS);
2074 if (opendata == NULL)
2075 return ERR_PTR(-ENOMEM);
2076 opendata->state = state;
2077 refcount_inc(&state->count);
2081 static int nfs4_open_recover_helper(struct nfs4_opendata *opendata,
2084 struct nfs4_state *newstate;
2087 if (!nfs4_mode_match_open_stateid(opendata->state, fmode))
2089 opendata->o_arg.open_flags = 0;
2090 opendata->o_arg.fmode = fmode;
2091 opendata->o_arg.share_access = nfs4_map_atomic_open_share(
2092 NFS_SB(opendata->dentry->d_sb),
2094 memset(&opendata->o_res, 0, sizeof(opendata->o_res));
2095 memset(&opendata->c_res, 0, sizeof(opendata->c_res));
2096 nfs4_init_opendata_res(opendata);
2097 ret = _nfs4_recover_proc_open(opendata);
2100 newstate = nfs4_opendata_to_nfs4_state(opendata);
2101 if (IS_ERR(newstate))
2102 return PTR_ERR(newstate);
2103 if (newstate != opendata->state)
2105 nfs4_close_state(newstate, fmode);
2109 static int nfs4_open_recover(struct nfs4_opendata *opendata, struct nfs4_state *state)
2113 /* memory barrier prior to reading state->n_* */
2115 ret = nfs4_open_recover_helper(opendata, FMODE_READ|FMODE_WRITE);
2118 ret = nfs4_open_recover_helper(opendata, FMODE_WRITE);
2121 ret = nfs4_open_recover_helper(opendata, FMODE_READ);
2125 * We may have performed cached opens for all three recoveries.
2126 * Check if we need to update the current stateid.
2128 if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0 &&
2129 !nfs4_stateid_match(&state->stateid, &state->open_stateid)) {
2130 write_seqlock(&state->seqlock);
2131 if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0)
2132 nfs4_stateid_copy(&state->stateid, &state->open_stateid);
2133 write_sequnlock(&state->seqlock);
2140 * reclaim state on the server after a reboot.
2142 static int _nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state)
2144 struct nfs_delegation *delegation;
2145 struct nfs4_opendata *opendata;
2146 fmode_t delegation_type = 0;
2149 opendata = nfs4_open_recoverdata_alloc(ctx, state,
2150 NFS4_OPEN_CLAIM_PREVIOUS);
2151 if (IS_ERR(opendata))
2152 return PTR_ERR(opendata);
2154 delegation = rcu_dereference(NFS_I(state->inode)->delegation);
2155 if (delegation != NULL && test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags) != 0)
2156 delegation_type = delegation->type;
2158 opendata->o_arg.u.delegation_type = delegation_type;
2159 status = nfs4_open_recover(opendata, state);
2160 nfs4_opendata_put(opendata);
2164 static int nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state)
2166 struct nfs_server *server = NFS_SERVER(state->inode);
2167 struct nfs4_exception exception = { };
2170 err = _nfs4_do_open_reclaim(ctx, state);
2171 trace_nfs4_open_reclaim(ctx, 0, err);
2172 if (nfs4_clear_cap_atomic_open_v1(server, err, &exception))
2174 if (err != -NFS4ERR_DELAY)
2176 nfs4_handle_exception(server, err, &exception);
2177 } while (exception.retry);
2181 static int nfs4_open_reclaim(struct nfs4_state_owner *sp, struct nfs4_state *state)
2183 struct nfs_open_context *ctx;
2186 ctx = nfs4_state_find_open_context(state);
2189 clear_bit(NFS_DELEGATED_STATE, &state->flags);
2190 nfs_state_clear_open_state_flags(state);
2191 ret = nfs4_do_open_reclaim(ctx, state);
2192 put_nfs_open_context(ctx);
2196 static int nfs4_handle_delegation_recall_error(struct nfs_server *server, struct nfs4_state *state, const nfs4_stateid *stateid, struct file_lock *fl, int err)
2200 printk(KERN_ERR "NFS: %s: unhandled error "
2201 "%d.\n", __func__, err);
2208 case -NFS4ERR_BADSESSION:
2209 case -NFS4ERR_BADSLOT:
2210 case -NFS4ERR_BAD_HIGH_SLOT:
2211 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION:
2212 case -NFS4ERR_DEADSESSION:
2214 case -NFS4ERR_STALE_CLIENTID:
2215 case -NFS4ERR_STALE_STATEID:
2216 /* Don't recall a delegation if it was lost */
2217 nfs4_schedule_lease_recovery(server->nfs_client);
2219 case -NFS4ERR_MOVED:
2220 nfs4_schedule_migration_recovery(server);
2222 case -NFS4ERR_LEASE_MOVED:
2223 nfs4_schedule_lease_moved_recovery(server->nfs_client);
2225 case -NFS4ERR_DELEG_REVOKED:
2226 case -NFS4ERR_ADMIN_REVOKED:
2227 case -NFS4ERR_EXPIRED:
2228 case -NFS4ERR_BAD_STATEID:
2229 case -NFS4ERR_OPENMODE:
2230 nfs_inode_find_state_and_recover(state->inode,
2232 nfs4_schedule_stateid_recovery(server, state);
2234 case -NFS4ERR_DELAY:
2235 case -NFS4ERR_GRACE:
2239 case -NFS4ERR_DENIED:
2241 struct nfs4_lock_state *lsp = fl->fl_u.nfs4_fl.owner;
2243 set_bit(NFS_LOCK_LOST, &lsp->ls_flags);
2250 int nfs4_open_delegation_recall(struct nfs_open_context *ctx,
2251 struct nfs4_state *state, const nfs4_stateid *stateid)
2253 struct nfs_server *server = NFS_SERVER(state->inode);
2254 struct nfs4_opendata *opendata;
2257 opendata = nfs4_open_recoverdata_alloc(ctx, state,
2258 NFS4_OPEN_CLAIM_DELEG_CUR_FH);
2259 if (IS_ERR(opendata))
2260 return PTR_ERR(opendata);
2261 nfs4_stateid_copy(&opendata->o_arg.u.delegation, stateid);
2262 if (!test_bit(NFS_O_RDWR_STATE, &state->flags)) {
2263 err = nfs4_open_recover_helper(opendata, FMODE_READ|FMODE_WRITE);
2267 if (!test_bit(NFS_O_WRONLY_STATE, &state->flags)) {
2268 err = nfs4_open_recover_helper(opendata, FMODE_WRITE);
2272 if (!test_bit(NFS_O_RDONLY_STATE, &state->flags)) {
2273 err = nfs4_open_recover_helper(opendata, FMODE_READ);
2277 nfs_state_clear_delegation(state);
2279 nfs4_opendata_put(opendata);
2280 return nfs4_handle_delegation_recall_error(server, state, stateid, NULL, err);
2283 static void nfs4_open_confirm_prepare(struct rpc_task *task, void *calldata)
2285 struct nfs4_opendata *data = calldata;
2287 nfs4_setup_sequence(data->o_arg.server->nfs_client,
2288 &data->c_arg.seq_args, &data->c_res.seq_res, task);
2291 static void nfs4_open_confirm_done(struct rpc_task *task, void *calldata)
2293 struct nfs4_opendata *data = calldata;
2295 nfs40_sequence_done(task, &data->c_res.seq_res);
2297 data->rpc_status = task->tk_status;
2298 if (data->rpc_status == 0) {
2299 nfs4_stateid_copy(&data->o_res.stateid, &data->c_res.stateid);
2300 nfs_confirm_seqid(&data->owner->so_seqid, 0);
2301 renew_lease(data->o_res.server, data->timestamp);
2302 data->rpc_done = true;
2306 static void nfs4_open_confirm_release(void *calldata)
2308 struct nfs4_opendata *data = calldata;
2309 struct nfs4_state *state = NULL;
2311 /* If this request hasn't been cancelled, do nothing */
2312 if (!data->cancelled)
2314 /* In case of error, no cleanup! */
2315 if (!data->rpc_done)
2317 state = nfs4_opendata_to_nfs4_state(data);
2319 nfs4_close_state(state, data->o_arg.fmode);
2321 nfs4_opendata_put(data);
2324 static const struct rpc_call_ops nfs4_open_confirm_ops = {
2325 .rpc_call_prepare = nfs4_open_confirm_prepare,
2326 .rpc_call_done = nfs4_open_confirm_done,
2327 .rpc_release = nfs4_open_confirm_release,
2331 * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata
2333 static int _nfs4_proc_open_confirm(struct nfs4_opendata *data)
2335 struct nfs_server *server = NFS_SERVER(d_inode(data->dir));
2336 struct rpc_task *task;
2337 struct rpc_message msg = {
2338 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_CONFIRM],
2339 .rpc_argp = &data->c_arg,
2340 .rpc_resp = &data->c_res,
2341 .rpc_cred = data->owner->so_cred,
2343 struct rpc_task_setup task_setup_data = {
2344 .rpc_client = server->client,
2345 .rpc_message = &msg,
2346 .callback_ops = &nfs4_open_confirm_ops,
2347 .callback_data = data,
2348 .workqueue = nfsiod_workqueue,
2349 .flags = RPC_TASK_ASYNC,
2353 nfs4_init_sequence(&data->c_arg.seq_args, &data->c_res.seq_res, 1,
2355 kref_get(&data->kref);
2356 data->rpc_done = false;
2357 data->rpc_status = 0;
2358 data->timestamp = jiffies;
2359 task = rpc_run_task(&task_setup_data);
2361 return PTR_ERR(task);
2362 status = rpc_wait_for_completion_task(task);
2364 data->cancelled = true;
2367 status = data->rpc_status;
2372 static void nfs4_open_prepare(struct rpc_task *task, void *calldata)
2374 struct nfs4_opendata *data = calldata;
2375 struct nfs4_state_owner *sp = data->owner;
2376 struct nfs_client *clp = sp->so_server->nfs_client;
2377 enum open_claim_type4 claim = data->o_arg.claim;
2379 if (nfs_wait_on_sequence(data->o_arg.seqid, task) != 0)
2382 * Check if we still need to send an OPEN call, or if we can use
2383 * a delegation instead.
2385 if (data->state != NULL) {
2386 struct nfs_delegation *delegation;
2388 if (can_open_cached(data->state, data->o_arg.fmode,
2389 data->o_arg.open_flags, claim))
2392 delegation = nfs4_get_valid_delegation(data->state->inode);
2393 if (can_open_delegated(delegation, data->o_arg.fmode, claim))
2394 goto unlock_no_action;
2397 /* Update client id. */
2398 data->o_arg.clientid = clp->cl_clientid;
2402 case NFS4_OPEN_CLAIM_PREVIOUS:
2403 case NFS4_OPEN_CLAIM_DELEG_CUR_FH:
2404 case NFS4_OPEN_CLAIM_DELEG_PREV_FH:
2405 data->o_arg.open_bitmap = &nfs4_open_noattr_bitmap[0];
2407 case NFS4_OPEN_CLAIM_FH:
2408 task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_NOATTR];
2410 data->timestamp = jiffies;
2411 if (nfs4_setup_sequence(data->o_arg.server->nfs_client,
2412 &data->o_arg.seq_args,
2413 &data->o_res.seq_res,
2415 nfs_release_seqid(data->o_arg.seqid);
2417 /* Set the create mode (note dependency on the session type) */
2418 data->o_arg.createmode = NFS4_CREATE_UNCHECKED;
2419 if (data->o_arg.open_flags & O_EXCL) {
2420 data->o_arg.createmode = NFS4_CREATE_EXCLUSIVE;
2421 if (nfs4_has_persistent_session(clp))
2422 data->o_arg.createmode = NFS4_CREATE_GUARDED;
2423 else if (clp->cl_mvops->minor_version > 0)
2424 data->o_arg.createmode = NFS4_CREATE_EXCLUSIVE4_1;
2428 trace_nfs4_cached_open(data->state);
2431 task->tk_action = NULL;
2433 nfs4_sequence_done(task, &data->o_res.seq_res);
2436 static void nfs4_open_done(struct rpc_task *task, void *calldata)
2438 struct nfs4_opendata *data = calldata;
2440 data->rpc_status = task->tk_status;
2442 if (!nfs4_sequence_process(task, &data->o_res.seq_res))
2445 if (task->tk_status == 0) {
2446 if (data->o_res.f_attr->valid & NFS_ATTR_FATTR_TYPE) {
2447 switch (data->o_res.f_attr->mode & S_IFMT) {
2451 data->rpc_status = -ELOOP;
2454 data->rpc_status = -EISDIR;
2457 data->rpc_status = -ENOTDIR;
2460 renew_lease(data->o_res.server, data->timestamp);
2461 if (!(data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM))
2462 nfs_confirm_seqid(&data->owner->so_seqid, 0);
2464 data->rpc_done = true;
2467 static void nfs4_open_release(void *calldata)
2469 struct nfs4_opendata *data = calldata;
2470 struct nfs4_state *state = NULL;
2472 /* If this request hasn't been cancelled, do nothing */
2473 if (!data->cancelled)
2475 /* In case of error, no cleanup! */
2476 if (data->rpc_status != 0 || !data->rpc_done)
2478 /* In case we need an open_confirm, no cleanup! */
2479 if (data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM)
2481 state = nfs4_opendata_to_nfs4_state(data);
2483 nfs4_close_state(state, data->o_arg.fmode);
2485 nfs4_opendata_put(data);
2488 static const struct rpc_call_ops nfs4_open_ops = {
2489 .rpc_call_prepare = nfs4_open_prepare,
2490 .rpc_call_done = nfs4_open_done,
2491 .rpc_release = nfs4_open_release,
2494 static int nfs4_run_open_task(struct nfs4_opendata *data,
2495 struct nfs_open_context *ctx)
2497 struct inode *dir = d_inode(data->dir);
2498 struct nfs_server *server = NFS_SERVER(dir);
2499 struct nfs_openargs *o_arg = &data->o_arg;
2500 struct nfs_openres *o_res = &data->o_res;
2501 struct rpc_task *task;
2502 struct rpc_message msg = {
2503 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN],
2506 .rpc_cred = data->owner->so_cred,
2508 struct rpc_task_setup task_setup_data = {
2509 .rpc_client = server->client,
2510 .rpc_message = &msg,
2511 .callback_ops = &nfs4_open_ops,
2512 .callback_data = data,
2513 .workqueue = nfsiod_workqueue,
2514 .flags = RPC_TASK_ASYNC,
2518 kref_get(&data->kref);
2519 data->rpc_done = false;
2520 data->rpc_status = 0;
2521 data->cancelled = false;
2522 data->is_recover = false;
2524 nfs4_init_sequence(&o_arg->seq_args, &o_res->seq_res, 1, 1);
2525 data->is_recover = true;
2526 task_setup_data.flags |= RPC_TASK_TIMEOUT;
2528 nfs4_init_sequence(&o_arg->seq_args, &o_res->seq_res, 1, 0);
2529 pnfs_lgopen_prepare(data, ctx);
2531 task = rpc_run_task(&task_setup_data);
2533 return PTR_ERR(task);
2534 status = rpc_wait_for_completion_task(task);
2536 data->cancelled = true;
2539 status = data->rpc_status;
2545 static int _nfs4_recover_proc_open(struct nfs4_opendata *data)
2547 struct inode *dir = d_inode(data->dir);
2548 struct nfs_openres *o_res = &data->o_res;
2551 status = nfs4_run_open_task(data, NULL);
2552 if (status != 0 || !data->rpc_done)
2555 nfs_fattr_map_and_free_names(NFS_SERVER(dir), &data->f_attr);
2557 if (o_res->rflags & NFS4_OPEN_RESULT_CONFIRM)
2558 status = _nfs4_proc_open_confirm(data);
2564 * Additional permission checks in order to distinguish between an
2565 * open for read, and an open for execute. This works around the
2566 * fact that NFSv4 OPEN treats read and execute permissions as being
2568 * Note that in the non-execute case, we want to turn off permission
2569 * checking if we just created a new file (POSIX open() semantics).
2571 static int nfs4_opendata_access(const struct cred *cred,
2572 struct nfs4_opendata *opendata,
2573 struct nfs4_state *state, fmode_t fmode,
2576 struct nfs_access_entry cache;
2579 /* access call failed or for some reason the server doesn't
2580 * support any access modes -- defer access call until later */
2581 if (opendata->o_res.access_supported == 0)
2586 * Use openflags to check for exec, because fmode won't
2587 * always have FMODE_EXEC set when file open for exec.
2589 if (openflags & __FMODE_EXEC) {
2590 /* ONLY check for exec rights */
2591 if (S_ISDIR(state->inode->i_mode))
2592 mask = NFS4_ACCESS_LOOKUP;
2594 mask = NFS4_ACCESS_EXECUTE;
2595 } else if ((fmode & FMODE_READ) && !opendata->file_created)
2596 mask = NFS4_ACCESS_READ;
2599 nfs_access_set_mask(&cache, opendata->o_res.access_result);
2600 nfs_access_add_cache(state->inode, &cache);
2602 flags = NFS4_ACCESS_READ | NFS4_ACCESS_EXECUTE | NFS4_ACCESS_LOOKUP;
2603 if ((mask & ~cache.mask & flags) == 0)
2610 * Note: On error, nfs4_proc_open will free the struct nfs4_opendata
2612 static int _nfs4_proc_open(struct nfs4_opendata *data,
2613 struct nfs_open_context *ctx)
2615 struct inode *dir = d_inode(data->dir);
2616 struct nfs_server *server = NFS_SERVER(dir);
2617 struct nfs_openargs *o_arg = &data->o_arg;
2618 struct nfs_openres *o_res = &data->o_res;
2621 status = nfs4_run_open_task(data, ctx);
2622 if (!data->rpc_done)
2625 if (status == -NFS4ERR_BADNAME &&
2626 !(o_arg->open_flags & O_CREAT))
2631 nfs_fattr_map_and_free_names(server, &data->f_attr);
2633 if (o_arg->open_flags & O_CREAT) {
2634 if (o_arg->open_flags & O_EXCL)
2635 data->file_created = true;
2636 else if (o_res->cinfo.before != o_res->cinfo.after)
2637 data->file_created = true;
2638 if (data->file_created ||
2639 inode_peek_iversion_raw(dir) != o_res->cinfo.after)
2640 update_changeattr(dir, &o_res->cinfo,
2641 o_res->f_attr->time_start, 0);
2643 if ((o_res->rflags & NFS4_OPEN_RESULT_LOCKTYPE_POSIX) == 0)
2644 server->caps &= ~NFS_CAP_POSIX_LOCK;
2645 if(o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) {
2646 status = _nfs4_proc_open_confirm(data);
2650 if (!(o_res->f_attr->valid & NFS_ATTR_FATTR)) {
2651 nfs4_sequence_free_slot(&o_res->seq_res);
2652 nfs4_proc_getattr(server, &o_res->fh, o_res->f_attr,
2653 o_res->f_label, NULL);
2660 * reclaim state on the server after a network partition.
2661 * Assumes caller holds the appropriate lock
2663 static int _nfs4_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state)
2665 struct nfs4_opendata *opendata;
2668 opendata = nfs4_open_recoverdata_alloc(ctx, state,
2669 NFS4_OPEN_CLAIM_FH);
2670 if (IS_ERR(opendata))
2671 return PTR_ERR(opendata);
2672 ret = nfs4_open_recover(opendata, state);
2674 d_drop(ctx->dentry);
2675 nfs4_opendata_put(opendata);
2679 static int nfs4_do_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state)
2681 struct nfs_server *server = NFS_SERVER(state->inode);
2682 struct nfs4_exception exception = { };
2686 err = _nfs4_open_expired(ctx, state);
2687 trace_nfs4_open_expired(ctx, 0, err);
2688 if (nfs4_clear_cap_atomic_open_v1(server, err, &exception))
2693 case -NFS4ERR_GRACE:
2694 case -NFS4ERR_DELAY:
2695 nfs4_handle_exception(server, err, &exception);
2698 } while (exception.retry);
2703 static int nfs4_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state)
2705 struct nfs_open_context *ctx;
2708 ctx = nfs4_state_find_open_context(state);
2711 ret = nfs4_do_open_expired(ctx, state);
2712 put_nfs_open_context(ctx);
2716 static void nfs_finish_clear_delegation_stateid(struct nfs4_state *state,
2717 const nfs4_stateid *stateid)
2719 nfs_remove_bad_delegation(state->inode, stateid);
2720 nfs_state_clear_delegation(state);
2723 static void nfs40_clear_delegation_stateid(struct nfs4_state *state)
2725 if (rcu_access_pointer(NFS_I(state->inode)->delegation) != NULL)
2726 nfs_finish_clear_delegation_stateid(state, NULL);
2729 static int nfs40_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state)
2731 /* NFSv4.0 doesn't allow for delegation recovery on open expire */
2732 nfs40_clear_delegation_stateid(state);
2733 nfs_state_clear_open_state_flags(state);
2734 return nfs4_open_expired(sp, state);
2737 static int nfs40_test_and_free_expired_stateid(struct nfs_server *server,
2738 nfs4_stateid *stateid,
2739 const struct cred *cred)
2741 return -NFS4ERR_BAD_STATEID;
2744 #if defined(CONFIG_NFS_V4_1)
2745 static int nfs41_test_and_free_expired_stateid(struct nfs_server *server,
2746 nfs4_stateid *stateid,
2747 const struct cred *cred)
2751 switch (stateid->type) {
2754 case NFS4_INVALID_STATEID_TYPE:
2755 case NFS4_SPECIAL_STATEID_TYPE:
2756 return -NFS4ERR_BAD_STATEID;
2757 case NFS4_REVOKED_STATEID_TYPE:
2761 status = nfs41_test_stateid(server, stateid, cred);
2763 case -NFS4ERR_EXPIRED:
2764 case -NFS4ERR_ADMIN_REVOKED:
2765 case -NFS4ERR_DELEG_REVOKED:
2771 /* Ack the revoked state to the server */
2772 nfs41_free_stateid(server, stateid, cred, true);
2773 return -NFS4ERR_EXPIRED;
2776 static int nfs41_check_delegation_stateid(struct nfs4_state *state)
2778 struct nfs_server *server = NFS_SERVER(state->inode);
2779 nfs4_stateid stateid;
2780 struct nfs_delegation *delegation;
2781 const struct cred *cred = NULL;
2782 int status, ret = NFS_OK;
2784 /* Get the delegation credential for use by test/free_stateid */
2786 delegation = rcu_dereference(NFS_I(state->inode)->delegation);
2787 if (delegation == NULL) {
2789 nfs_state_clear_delegation(state);
2793 nfs4_stateid_copy(&stateid, &delegation->stateid);
2795 if (!test_and_clear_bit(NFS_DELEGATION_TEST_EXPIRED,
2796 &delegation->flags)) {
2801 if (delegation->cred)
2802 cred = get_cred(delegation->cred);
2804 status = nfs41_test_and_free_expired_stateid(server, &stateid, cred);
2805 trace_nfs4_test_delegation_stateid(state, NULL, status);
2806 if (status == -NFS4ERR_EXPIRED || status == -NFS4ERR_BAD_STATEID)
2807 nfs_finish_clear_delegation_stateid(state, &stateid);
2815 static void nfs41_delegation_recover_stateid(struct nfs4_state *state)
2819 if (test_bit(NFS_DELEGATED_STATE, &state->flags) &&
2820 nfs4_copy_delegation_stateid(state->inode, state->state,
2822 nfs4_stateid_match_other(&state->stateid, &tmp))
2823 nfs_state_set_delegation(state, &tmp, state->state);
2825 nfs_state_clear_delegation(state);
2829 * nfs41_check_expired_locks - possibly free a lock stateid
2831 * @state: NFSv4 state for an inode
2833 * Returns NFS_OK if recovery for this stateid is now finished.
2834 * Otherwise a negative NFS4ERR value is returned.
2836 static int nfs41_check_expired_locks(struct nfs4_state *state)
2838 int status, ret = NFS_OK;
2839 struct nfs4_lock_state *lsp, *prev = NULL;
2840 struct nfs_server *server = NFS_SERVER(state->inode);
2842 if (!test_bit(LK_STATE_IN_USE, &state->flags))
2845 spin_lock(&state->state_lock);
2846 list_for_each_entry(lsp, &state->lock_states, ls_locks) {
2847 if (test_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags)) {
2848 const struct cred *cred = lsp->ls_state->owner->so_cred;
2850 refcount_inc(&lsp->ls_count);
2851 spin_unlock(&state->state_lock);
2853 nfs4_put_lock_state(prev);
2856 status = nfs41_test_and_free_expired_stateid(server,
2859 trace_nfs4_test_lock_stateid(state, lsp, status);
2860 if (status == -NFS4ERR_EXPIRED ||
2861 status == -NFS4ERR_BAD_STATEID) {
2862 clear_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags);
2863 lsp->ls_stateid.type = NFS4_INVALID_STATEID_TYPE;
2864 if (!recover_lost_locks)
2865 set_bit(NFS_LOCK_LOST, &lsp->ls_flags);
2866 } else if (status != NFS_OK) {
2868 nfs4_put_lock_state(prev);
2871 spin_lock(&state->state_lock);
2874 spin_unlock(&state->state_lock);
2875 nfs4_put_lock_state(prev);
2881 * nfs41_check_open_stateid - possibly free an open stateid
2883 * @state: NFSv4 state for an inode
2885 * Returns NFS_OK if recovery for this stateid is now finished.
2886 * Otherwise a negative NFS4ERR value is returned.
2888 static int nfs41_check_open_stateid(struct nfs4_state *state)
2890 struct nfs_server *server = NFS_SERVER(state->inode);
2891 nfs4_stateid *stateid = &state->open_stateid;
2892 const struct cred *cred = state->owner->so_cred;
2895 if (test_bit(NFS_OPEN_STATE, &state->flags) == 0)
2896 return -NFS4ERR_BAD_STATEID;
2897 status = nfs41_test_and_free_expired_stateid(server, stateid, cred);
2898 trace_nfs4_test_open_stateid(state, NULL, status);
2899 if (status == -NFS4ERR_EXPIRED || status == -NFS4ERR_BAD_STATEID) {
2900 nfs_state_clear_open_state_flags(state);
2901 stateid->type = NFS4_INVALID_STATEID_TYPE;
2904 if (nfs_open_stateid_recover_openmode(state))
2905 return -NFS4ERR_OPENMODE;
2909 static int nfs41_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state)
2913 status = nfs41_check_delegation_stateid(state);
2914 if (status != NFS_OK)
2916 nfs41_delegation_recover_stateid(state);
2918 status = nfs41_check_expired_locks(state);
2919 if (status != NFS_OK)
2921 status = nfs41_check_open_stateid(state);
2922 if (status != NFS_OK)
2923 status = nfs4_open_expired(sp, state);
2929 * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-*
2930 * fields corresponding to attributes that were used to store the verifier.
2931 * Make sure we clobber those fields in the later setattr call
2933 static unsigned nfs4_exclusive_attrset(struct nfs4_opendata *opendata,
2934 struct iattr *sattr, struct nfs4_label **label)
2936 const __u32 *bitmask = opendata->o_arg.server->exclcreat_bitmask;
2941 for (i = 0; i < ARRAY_SIZE(attrset); i++) {
2942 attrset[i] = opendata->o_res.attrset[i];
2943 if (opendata->o_arg.createmode == NFS4_CREATE_EXCLUSIVE4_1)
2944 attrset[i] &= ~bitmask[i];
2947 ret = (opendata->o_arg.createmode == NFS4_CREATE_EXCLUSIVE) ?
2948 sattr->ia_valid : 0;
2950 if ((attrset[1] & (FATTR4_WORD1_TIME_ACCESS|FATTR4_WORD1_TIME_ACCESS_SET))) {
2951 if (sattr->ia_valid & ATTR_ATIME_SET)
2952 ret |= ATTR_ATIME_SET;
2957 if ((attrset[1] & (FATTR4_WORD1_TIME_MODIFY|FATTR4_WORD1_TIME_MODIFY_SET))) {
2958 if (sattr->ia_valid & ATTR_MTIME_SET)
2959 ret |= ATTR_MTIME_SET;
2964 if (!(attrset[2] & FATTR4_WORD2_SECURITY_LABEL))
2969 static int _nfs4_open_and_get_state(struct nfs4_opendata *opendata,
2970 int flags, struct nfs_open_context *ctx)
2972 struct nfs4_state_owner *sp = opendata->owner;
2973 struct nfs_server *server = sp->so_server;
2974 struct dentry *dentry;
2975 struct nfs4_state *state;
2976 fmode_t acc_mode = _nfs4_ctx_to_accessmode(ctx);
2980 seq = raw_seqcount_begin(&sp->so_reclaim_seqcount);
2982 ret = _nfs4_proc_open(opendata, ctx);
2986 state = _nfs4_opendata_to_nfs4_state(opendata);
2987 ret = PTR_ERR(state);
2991 if (server->caps & NFS_CAP_POSIX_LOCK)
2992 set_bit(NFS_STATE_POSIX_LOCKS, &state->flags);
2993 if (opendata->o_res.rflags & NFS4_OPEN_RESULT_MAY_NOTIFY_LOCK)
2994 set_bit(NFS_STATE_MAY_NOTIFY_LOCK, &state->flags);
2996 dentry = opendata->dentry;
2997 if (d_really_is_negative(dentry)) {
2998 struct dentry *alias;
3000 alias = d_exact_alias(dentry, state->inode);
3002 alias = d_splice_alias(igrab(state->inode), dentry);
3003 /* d_splice_alias() can't fail here - it's a non-directory */
3006 ctx->dentry = dentry = alias;
3008 nfs_set_verifier(dentry,
3009 nfs_save_change_attribute(d_inode(opendata->dir)));
3012 /* Parse layoutget results before we check for access */
3013 pnfs_parse_lgopen(state->inode, opendata->lgp, ctx);
3015 ret = nfs4_opendata_access(sp->so_cred, opendata, state,
3020 if (d_inode(dentry) == state->inode) {
3021 nfs_inode_attach_open_context(ctx);
3022 if (read_seqcount_retry(&sp->so_reclaim_seqcount, seq))
3023 nfs4_schedule_stateid_recovery(server, state);
3027 if (!opendata->cancelled)
3028 nfs4_sequence_free_slot(&opendata->o_res.seq_res);
3033 * Returns a referenced nfs4_state
3035 static int _nfs4_do_open(struct inode *dir,
3036 struct nfs_open_context *ctx,
3038 const struct nfs4_open_createattrs *c,
3041 struct nfs4_state_owner *sp;
3042 struct nfs4_state *state = NULL;
3043 struct nfs_server *server = NFS_SERVER(dir);
3044 struct nfs4_opendata *opendata;
3045 struct dentry *dentry = ctx->dentry;
3046 const struct cred *cred = ctx->cred;
3047 struct nfs4_threshold **ctx_th = &ctx->mdsthreshold;
3048 fmode_t fmode = _nfs4_ctx_to_openmode(ctx);
3049 enum open_claim_type4 claim = NFS4_OPEN_CLAIM_NULL;
3050 struct iattr *sattr = c->sattr;
3051 struct nfs4_label *label = c->label;
3052 struct nfs4_label *olabel = NULL;
3055 /* Protect against reboot recovery conflicts */
3057 sp = nfs4_get_state_owner(server, cred, GFP_KERNEL);
3059 dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n");
3062 status = nfs4_client_recover_expired_lease(server->nfs_client);
3064 goto err_put_state_owner;
3065 if (d_really_is_positive(dentry))
3066 nfs4_return_incompatible_delegation(d_inode(dentry), fmode);
3068 if (d_really_is_positive(dentry))
3069 claim = NFS4_OPEN_CLAIM_FH;
3070 opendata = nfs4_opendata_alloc(dentry, sp, fmode, flags,
3071 c, claim, GFP_KERNEL);
3072 if (opendata == NULL)
3073 goto err_put_state_owner;
3076 olabel = nfs4_label_alloc(server, GFP_KERNEL);
3077 if (IS_ERR(olabel)) {
3078 status = PTR_ERR(olabel);
3079 goto err_opendata_put;
3083 if (server->attr_bitmask[2] & FATTR4_WORD2_MDSTHRESHOLD) {
3084 if (!opendata->f_attr.mdsthreshold) {
3085 opendata->f_attr.mdsthreshold = pnfs_mdsthreshold_alloc();
3086 if (!opendata->f_attr.mdsthreshold)
3087 goto err_free_label;
3089 opendata->o_arg.open_bitmap = &nfs4_pnfs_open_bitmap[0];
3091 if (d_really_is_positive(dentry))
3092 opendata->state = nfs4_get_open_state(d_inode(dentry), sp);
3094 status = _nfs4_open_and_get_state(opendata, flags, ctx);
3096 goto err_free_label;
3099 if ((opendata->o_arg.open_flags & (O_CREAT|O_EXCL)) == (O_CREAT|O_EXCL) &&
3100 (opendata->o_arg.createmode != NFS4_CREATE_GUARDED)) {
3101 unsigned attrs = nfs4_exclusive_attrset(opendata, sattr, &label);
3103 * send create attributes which was not set by open
3104 * with an extra setattr.
3106 if (attrs || label) {
3107 unsigned ia_old = sattr->ia_valid;
3109 sattr->ia_valid = attrs;
3110 nfs_fattr_init(opendata->o_res.f_attr);
3111 status = nfs4_do_setattr(state->inode, cred,
3112 opendata->o_res.f_attr, sattr,
3113 ctx, label, olabel);
3115 nfs_setattr_update_inode(state->inode, sattr,
3116 opendata->o_res.f_attr);
3117 nfs_setsecurity(state->inode, opendata->o_res.f_attr, olabel);
3119 sattr->ia_valid = ia_old;
3122 if (opened && opendata->file_created)
3125 if (pnfs_use_threshold(ctx_th, opendata->f_attr.mdsthreshold, server)) {
3126 *ctx_th = opendata->f_attr.mdsthreshold;
3127 opendata->f_attr.mdsthreshold = NULL;
3130 nfs4_label_free(olabel);
3132 nfs4_opendata_put(opendata);
3133 nfs4_put_state_owner(sp);
3136 nfs4_label_free(olabel);
3138 nfs4_opendata_put(opendata);
3139 err_put_state_owner:
3140 nfs4_put_state_owner(sp);
3146 static struct nfs4_state *nfs4_do_open(struct inode *dir,
3147 struct nfs_open_context *ctx,
3149 struct iattr *sattr,
3150 struct nfs4_label *label,
3153 struct nfs_server *server = NFS_SERVER(dir);
3154 struct nfs4_exception exception = {
3155 .interruptible = true,
3157 struct nfs4_state *res;
3158 struct nfs4_open_createattrs c = {
3162 [0] = (__u32)jiffies,
3163 [1] = (__u32)current->pid,
3169 status = _nfs4_do_open(dir, ctx, flags, &c, opened);
3171 trace_nfs4_open_file(ctx, flags, status);
3174 /* NOTE: BAD_SEQID means the server and client disagree about the
3175 * book-keeping w.r.t. state-changing operations
3176 * (OPEN/CLOSE/LOCK/LOCKU...)
3177 * It is actually a sign of a bug on the client or on the server.
3179 * If we receive a BAD_SEQID error in the particular case of
3180 * doing an OPEN, we assume that nfs_increment_open_seqid() will
3181 * have unhashed the old state_owner for us, and that we can
3182 * therefore safely retry using a new one. We should still warn
3183 * the user though...
3185 if (status == -NFS4ERR_BAD_SEQID) {
3186 pr_warn_ratelimited("NFS: v4 server %s "
3187 " returned a bad sequence-id error!\n",
3188 NFS_SERVER(dir)->nfs_client->cl_hostname);
3189 exception.retry = 1;
3193 * BAD_STATEID on OPEN means that the server cancelled our
3194 * state before it received the OPEN_CONFIRM.
3195 * Recover by retrying the request as per the discussion
3196 * on Page 181 of RFC3530.
3198 if (status == -NFS4ERR_BAD_STATEID) {
3199 exception.retry = 1;
3202 if (status == -EAGAIN) {
3203 /* We must have found a delegation */
3204 exception.retry = 1;
3207 if (nfs4_clear_cap_atomic_open_v1(server, status, &exception))
3209 res = ERR_PTR(nfs4_handle_exception(server,
3210 status, &exception));
3211 } while (exception.retry);
3215 static int _nfs4_do_setattr(struct inode *inode,
3216 struct nfs_setattrargs *arg,
3217 struct nfs_setattrres *res,
3218 const struct cred *cred,
3219 struct nfs_open_context *ctx)
3221 struct nfs_server *server = NFS_SERVER(inode);
3222 struct rpc_message msg = {
3223 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETATTR],
3228 const struct cred *delegation_cred = NULL;
3229 unsigned long timestamp = jiffies;
3233 nfs_fattr_init(res->fattr);
3235 /* Servers should only apply open mode checks for file size changes */
3236 truncate = (arg->iap->ia_valid & ATTR_SIZE) ? true : false;
3240 if (nfs4_copy_delegation_stateid(inode, FMODE_WRITE, &arg->stateid, &delegation_cred)) {
3241 /* Use that stateid */
3242 } else if (ctx != NULL && ctx->state) {
3243 struct nfs_lock_context *l_ctx;
3244 if (!nfs4_valid_open_stateid(ctx->state))
3246 l_ctx = nfs_get_lock_context(ctx);
3248 return PTR_ERR(l_ctx);
3249 status = nfs4_select_rw_stateid(ctx->state, FMODE_WRITE, l_ctx,
3250 &arg->stateid, &delegation_cred);
3251 nfs_put_lock_context(l_ctx);
3256 nfs4_stateid_copy(&arg->stateid, &zero_stateid);
3258 if (delegation_cred)
3259 msg.rpc_cred = delegation_cred;
3261 status = nfs4_call_sync(server->client, server, &msg, &arg->seq_args, &res->seq_res, 1);
3263 put_cred(delegation_cred);
3264 if (status == 0 && ctx != NULL)
3265 renew_lease(server, timestamp);
3266 trace_nfs4_setattr(inode, &arg->stateid, status);
3270 static int nfs4_do_setattr(struct inode *inode, const struct cred *cred,
3271 struct nfs_fattr *fattr, struct iattr *sattr,
3272 struct nfs_open_context *ctx, struct nfs4_label *ilabel,
3273 struct nfs4_label *olabel)
3275 struct nfs_server *server = NFS_SERVER(inode);
3276 __u32 bitmask[NFS4_BITMASK_SZ];
3277 struct nfs4_state *state = ctx ? ctx->state : NULL;
3278 struct nfs_setattrargs arg = {
3279 .fh = NFS_FH(inode),
3285 struct nfs_setattrres res = {
3290 struct nfs4_exception exception = {
3293 .stateid = &arg.stateid,
3298 nfs4_bitmap_copy_adjust_setattr(bitmask,
3299 nfs4_bitmask(server, olabel),
3302 err = _nfs4_do_setattr(inode, &arg, &res, cred, ctx);
3304 case -NFS4ERR_OPENMODE:
3305 if (!(sattr->ia_valid & ATTR_SIZE)) {
3306 pr_warn_once("NFSv4: server %s is incorrectly "
3307 "applying open mode checks to "
3308 "a SETATTR that is not "
3309 "changing file size.\n",
3310 server->nfs_client->cl_hostname);
3312 if (state && !(state->state & FMODE_WRITE)) {
3314 if (sattr->ia_valid & ATTR_OPEN)
3319 err = nfs4_handle_exception(server, err, &exception);
3320 } while (exception.retry);
3326 nfs4_wait_on_layoutreturn(struct inode *inode, struct rpc_task *task)
3328 if (inode == NULL || !nfs_have_layout(inode))
3331 return pnfs_wait_on_layoutreturn(inode, task);
3335 * Update the seqid of an open stateid
3337 static void nfs4_sync_open_stateid(nfs4_stateid *dst,
3338 struct nfs4_state *state)
3345 if (!nfs4_valid_open_stateid(state))
3347 seq = read_seqbegin(&state->seqlock);
3348 if (!nfs4_state_match_open_stateid_other(state, dst)) {
3349 nfs4_stateid_copy(dst, &state->open_stateid);
3350 if (read_seqretry(&state->seqlock, seq))
3354 seqid_open = state->open_stateid.seqid;
3355 if (read_seqretry(&state->seqlock, seq))
3358 dst_seqid = be32_to_cpu(dst->seqid);
3359 if ((s32)(dst_seqid - be32_to_cpu(seqid_open)) < 0)
3360 dst->seqid = seqid_open;
3366 * Update the seqid of an open stateid after receiving
3367 * NFS4ERR_OLD_STATEID
3369 static bool nfs4_refresh_open_old_stateid(nfs4_stateid *dst,
3370 struct nfs4_state *state)
3379 if (!nfs4_valid_open_stateid(state))
3381 seq = read_seqbegin(&state->seqlock);
3382 if (!nfs4_state_match_open_stateid_other(state, dst)) {
3383 if (read_seqretry(&state->seqlock, seq))
3387 seqid_open = state->open_stateid.seqid;
3388 if (read_seqretry(&state->seqlock, seq))
3391 dst_seqid = be32_to_cpu(dst->seqid);
3392 if ((s32)(dst_seqid - be32_to_cpu(seqid_open)) >= 0)
3393 dst->seqid = cpu_to_be32(dst_seqid + 1);
3395 dst->seqid = seqid_open;
3403 struct nfs4_closedata {
3404 struct inode *inode;
3405 struct nfs4_state *state;
3406 struct nfs_closeargs arg;
3407 struct nfs_closeres res;
3409 struct nfs4_layoutreturn_args arg;
3410 struct nfs4_layoutreturn_res res;
3411 struct nfs4_xdr_opaque_data ld_private;
3415 struct nfs_fattr fattr;
3416 unsigned long timestamp;
3419 static void nfs4_free_closedata(void *data)
3421 struct nfs4_closedata *calldata = data;
3422 struct nfs4_state_owner *sp = calldata->state->owner;
3423 struct super_block *sb = calldata->state->inode->i_sb;
3425 if (calldata->lr.roc)
3426 pnfs_roc_release(&calldata->lr.arg, &calldata->lr.res,
3427 calldata->res.lr_ret);
3428 nfs4_put_open_state(calldata->state);
3429 nfs_free_seqid(calldata->arg.seqid);
3430 nfs4_put_state_owner(sp);
3431 nfs_sb_deactive(sb);
3435 static void nfs4_close_done(struct rpc_task *task, void *data)
3437 struct nfs4_closedata *calldata = data;
3438 struct nfs4_state *state = calldata->state;
3439 struct nfs_server *server = NFS_SERVER(calldata->inode);
3440 nfs4_stateid *res_stateid = NULL;
3441 struct nfs4_exception exception = {
3443 .inode = calldata->inode,
3444 .stateid = &calldata->arg.stateid,
3447 dprintk("%s: begin!\n", __func__);
3448 if (!nfs4_sequence_done(task, &calldata->res.seq_res))
3450 trace_nfs4_close(state, &calldata->arg, &calldata->res, task->tk_status);
3452 /* Handle Layoutreturn errors */
3453 if (pnfs_roc_done(task, calldata->inode,
3454 &calldata->arg.lr_args,
3455 &calldata->res.lr_res,
3456 &calldata->res.lr_ret) == -EAGAIN)
3459 /* hmm. we are done with the inode, and in the process of freeing
3460 * the state_owner. we keep this around to process errors
3462 switch (task->tk_status) {
3464 res_stateid = &calldata->res.stateid;
3465 renew_lease(server, calldata->timestamp);
3467 case -NFS4ERR_ACCESS:
3468 if (calldata->arg.bitmask != NULL) {
3469 calldata->arg.bitmask = NULL;
3470 calldata->res.fattr = NULL;
3475 case -NFS4ERR_OLD_STATEID:
3476 /* Did we race with OPEN? */
3477 if (nfs4_refresh_open_old_stateid(&calldata->arg.stateid,
3481 case -NFS4ERR_ADMIN_REVOKED:
3482 case -NFS4ERR_STALE_STATEID:
3483 case -NFS4ERR_EXPIRED:
3484 nfs4_free_revoked_stateid(server,
3485 &calldata->arg.stateid,
3486 task->tk_msg.rpc_cred);
3488 case -NFS4ERR_BAD_STATEID:
3489 if (calldata->arg.fmode == 0)
3493 task->tk_status = nfs4_async_handle_exception(task,
3494 server, task->tk_status, &exception);
3495 if (exception.retry)
3498 nfs_clear_open_stateid(state, &calldata->arg.stateid,
3499 res_stateid, calldata->arg.fmode);
3501 task->tk_status = 0;
3502 nfs_release_seqid(calldata->arg.seqid);
3503 nfs_refresh_inode(calldata->inode, &calldata->fattr);
3504 dprintk("%s: done, ret = %d!\n", __func__, task->tk_status);
3507 task->tk_status = 0;
3508 rpc_restart_call_prepare(task);
3512 static void nfs4_close_prepare(struct rpc_task *task, void *data)
3514 struct nfs4_closedata *calldata = data;
3515 struct nfs4_state *state = calldata->state;
3516 struct inode *inode = calldata->inode;
3517 struct pnfs_layout_hdr *lo;
3518 bool is_rdonly, is_wronly, is_rdwr;
3521 dprintk("%s: begin!\n", __func__);
3522 if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0)
3525 task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE];
3526 spin_lock(&state->owner->so_lock);
3527 is_rdwr = test_bit(NFS_O_RDWR_STATE, &state->flags);
3528 is_rdonly = test_bit(NFS_O_RDONLY_STATE, &state->flags);
3529 is_wronly = test_bit(NFS_O_WRONLY_STATE, &state->flags);
3530 /* Calculate the change in open mode */
3531 calldata->arg.fmode = 0;
3532 if (state->n_rdwr == 0) {
3533 if (state->n_rdonly == 0)
3534 call_close |= is_rdonly;
3536 calldata->arg.fmode |= FMODE_READ;
3537 if (state->n_wronly == 0)
3538 call_close |= is_wronly;
3540 calldata->arg.fmode |= FMODE_WRITE;
3541 if (calldata->arg.fmode != (FMODE_READ|FMODE_WRITE))
3542 call_close |= is_rdwr;
3544 calldata->arg.fmode |= FMODE_READ|FMODE_WRITE;
3546 nfs4_sync_open_stateid(&calldata->arg.stateid, state);
3547 if (!nfs4_valid_open_stateid(state))
3549 spin_unlock(&state->owner->so_lock);
3552 /* Note: exit _without_ calling nfs4_close_done */
3556 if (!calldata->lr.roc && nfs4_wait_on_layoutreturn(inode, task)) {
3557 nfs_release_seqid(calldata->arg.seqid);
3561 lo = calldata->arg.lr_args ? calldata->arg.lr_args->layout : NULL;
3562 if (lo && !pnfs_layout_is_valid(lo)) {
3563 calldata->arg.lr_args = NULL;
3564 calldata->res.lr_res = NULL;
3567 if (calldata->arg.fmode == 0)
3568 task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE];
3570 if (calldata->arg.fmode == 0 || calldata->arg.fmode == FMODE_READ) {
3571 /* Close-to-open cache consistency revalidation */
3572 if (!nfs4_have_delegation(inode, FMODE_READ))
3573 calldata->arg.bitmask = NFS_SERVER(inode)->cache_consistency_bitmask;
3575 calldata->arg.bitmask = NULL;
3578 calldata->arg.share_access =
3579 nfs4_map_atomic_open_share(NFS_SERVER(inode),
3580 calldata->arg.fmode, 0);
3582 if (calldata->res.fattr == NULL)
3583 calldata->arg.bitmask = NULL;
3584 else if (calldata->arg.bitmask == NULL)
3585 calldata->res.fattr = NULL;
3586 calldata->timestamp = jiffies;
3587 if (nfs4_setup_sequence(NFS_SERVER(inode)->nfs_client,
3588 &calldata->arg.seq_args,
3589 &calldata->res.seq_res,
3591 nfs_release_seqid(calldata->arg.seqid);
3592 dprintk("%s: done!\n", __func__);
3595 task->tk_action = NULL;
3597 nfs4_sequence_done(task, &calldata->res.seq_res);
3600 static const struct rpc_call_ops nfs4_close_ops = {
3601 .rpc_call_prepare = nfs4_close_prepare,
3602 .rpc_call_done = nfs4_close_done,
3603 .rpc_release = nfs4_free_closedata,
3607 * It is possible for data to be read/written from a mem-mapped file
3608 * after the sys_close call (which hits the vfs layer as a flush).
3609 * This means that we can't safely call nfsv4 close on a file until
3610 * the inode is cleared. This in turn means that we are not good
3611 * NFSv4 citizens - we do not indicate to the server to update the file's
3612 * share state even when we are done with one of the three share
3613 * stateid's in the inode.
3615 * NOTE: Caller must be holding the sp->so_owner semaphore!
3617 int nfs4_do_close(struct nfs4_state *state, gfp_t gfp_mask, int wait)
3619 struct nfs_server *server = NFS_SERVER(state->inode);
3620 struct nfs_seqid *(*alloc_seqid)(struct nfs_seqid_counter *, gfp_t);
3621 struct nfs4_closedata *calldata;
3622 struct nfs4_state_owner *sp = state->owner;
3623 struct rpc_task *task;
3624 struct rpc_message msg = {
3625 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE],
3626 .rpc_cred = state->owner->so_cred,
3628 struct rpc_task_setup task_setup_data = {
3629 .rpc_client = server->client,
3630 .rpc_message = &msg,
3631 .callback_ops = &nfs4_close_ops,
3632 .workqueue = nfsiod_workqueue,
3633 .flags = RPC_TASK_ASYNC,
3635 int status = -ENOMEM;
3637 nfs4_state_protect(server->nfs_client, NFS_SP4_MACH_CRED_CLEANUP,
3638 &task_setup_data.rpc_client, &msg);
3640 calldata = kzalloc(sizeof(*calldata), gfp_mask);
3641 if (calldata == NULL)
3643 nfs4_init_sequence(&calldata->arg.seq_args, &calldata->res.seq_res, 1, 0);
3644 calldata->inode = state->inode;
3645 calldata->state = state;
3646 calldata->arg.fh = NFS_FH(state->inode);
3647 if (!nfs4_copy_open_stateid(&calldata->arg.stateid, state))
3648 goto out_free_calldata;
3649 /* Serialization for the sequence id */
3650 alloc_seqid = server->nfs_client->cl_mvops->alloc_seqid;
3651 calldata->arg.seqid = alloc_seqid(&state->owner->so_seqid, gfp_mask);
3652 if (IS_ERR(calldata->arg.seqid))
3653 goto out_free_calldata;
3654 nfs_fattr_init(&calldata->fattr);
3655 calldata->arg.fmode = 0;
3656 calldata->lr.arg.ld_private = &calldata->lr.ld_private;
3657 calldata->res.fattr = &calldata->fattr;
3658 calldata->res.seqid = calldata->arg.seqid;
3659 calldata->res.server = server;
3660 calldata->res.lr_ret = -NFS4ERR_NOMATCHING_LAYOUT;
3661 calldata->lr.roc = pnfs_roc(state->inode,
3662 &calldata->lr.arg, &calldata->lr.res, msg.rpc_cred);
3663 if (calldata->lr.roc) {
3664 calldata->arg.lr_args = &calldata->lr.arg;
3665 calldata->res.lr_res = &calldata->lr.res;
3667 nfs_sb_active(calldata->inode->i_sb);
3669 msg.rpc_argp = &calldata->arg;
3670 msg.rpc_resp = &calldata->res;
3671 task_setup_data.callback_data = calldata;
3672 task = rpc_run_task(&task_setup_data);
3674 return PTR_ERR(task);
3677 status = rpc_wait_for_completion_task(task);
3683 nfs4_put_open_state(state);
3684 nfs4_put_state_owner(sp);
3688 static struct inode *
3689 nfs4_atomic_open(struct inode *dir, struct nfs_open_context *ctx,
3690 int open_flags, struct iattr *attr, int *opened)
3692 struct nfs4_state *state;
3693 struct nfs4_label l = {0, 0, 0, NULL}, *label = NULL;
3695 label = nfs4_label_init_security(dir, ctx->dentry, attr, &l);
3697 /* Protect against concurrent sillydeletes */
3698 state = nfs4_do_open(dir, ctx, open_flags, attr, label, opened);
3700 nfs4_label_release_security(label);
3703 return ERR_CAST(state);
3704 return state->inode;
3707 static void nfs4_close_context(struct nfs_open_context *ctx, int is_sync)
3709 if (ctx->state == NULL)
3712 nfs4_close_sync(ctx->state, _nfs4_ctx_to_openmode(ctx));
3714 nfs4_close_state(ctx->state, _nfs4_ctx_to_openmode(ctx));
3717 #define FATTR4_WORD1_NFS40_MASK (2*FATTR4_WORD1_MOUNTED_ON_FILEID - 1UL)
3718 #define FATTR4_WORD2_NFS41_MASK (2*FATTR4_WORD2_SUPPATTR_EXCLCREAT - 1UL)
3719 #define FATTR4_WORD2_NFS42_MASK (2*FATTR4_WORD2_MODE_UMASK - 1UL)
3721 static int _nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle)
3723 u32 bitmask[3] = {}, minorversion = server->nfs_client->cl_minorversion;
3724 struct nfs4_server_caps_arg args = {
3728 struct nfs4_server_caps_res res = {};
3729 struct rpc_message msg = {
3730 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SERVER_CAPS],
3737 bitmask[0] = FATTR4_WORD0_SUPPORTED_ATTRS |
3738 FATTR4_WORD0_FH_EXPIRE_TYPE |
3739 FATTR4_WORD0_LINK_SUPPORT |
3740 FATTR4_WORD0_SYMLINK_SUPPORT |
3741 FATTR4_WORD0_ACLSUPPORT;
3743 bitmask[2] = FATTR4_WORD2_SUPPATTR_EXCLCREAT;
3745 status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0);
3747 /* Sanity check the server answers */
3748 switch (minorversion) {
3750 res.attr_bitmask[1] &= FATTR4_WORD1_NFS40_MASK;
3751 res.attr_bitmask[2] = 0;
3754 res.attr_bitmask[2] &= FATTR4_WORD2_NFS41_MASK;
3757 res.attr_bitmask[2] &= FATTR4_WORD2_NFS42_MASK;
3759 memcpy(server->attr_bitmask, res.attr_bitmask, sizeof(server->attr_bitmask));
3760 server->caps &= ~(NFS_CAP_ACLS|NFS_CAP_HARDLINKS|
3761 NFS_CAP_SYMLINKS|NFS_CAP_FILEID|
3762 NFS_CAP_MODE|NFS_CAP_NLINK|NFS_CAP_OWNER|
3763 NFS_CAP_OWNER_GROUP|NFS_CAP_ATIME|
3764 NFS_CAP_CTIME|NFS_CAP_MTIME|
3765 NFS_CAP_SECURITY_LABEL);
3766 if (res.attr_bitmask[0] & FATTR4_WORD0_ACL &&
3767 res.acl_bitmask & ACL4_SUPPORT_ALLOW_ACL)
3768 server->caps |= NFS_CAP_ACLS;
3769 if (res.has_links != 0)
3770 server->caps |= NFS_CAP_HARDLINKS;
3771 if (res.has_symlinks != 0)
3772 server->caps |= NFS_CAP_SYMLINKS;
3773 if (res.attr_bitmask[0] & FATTR4_WORD0_FILEID)
3774 server->caps |= NFS_CAP_FILEID;
3775 if (res.attr_bitmask[1] & FATTR4_WORD1_MODE)
3776 server->caps |= NFS_CAP_MODE;
3777 if (res.attr_bitmask[1] & FATTR4_WORD1_NUMLINKS)
3778 server->caps |= NFS_CAP_NLINK;
3779 if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER)
3780 server->caps |= NFS_CAP_OWNER;
3781 if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER_GROUP)
3782 server->caps |= NFS_CAP_OWNER_GROUP;
3783 if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_ACCESS)
3784 server->caps |= NFS_CAP_ATIME;
3785 if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_METADATA)
3786 server->caps |= NFS_CAP_CTIME;
3787 if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_MODIFY)
3788 server->caps |= NFS_CAP_MTIME;
3789 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
3790 if (res.attr_bitmask[2] & FATTR4_WORD2_SECURITY_LABEL)
3791 server->caps |= NFS_CAP_SECURITY_LABEL;
3793 memcpy(server->attr_bitmask_nl, res.attr_bitmask,
3794 sizeof(server->attr_bitmask));
3795 server->attr_bitmask_nl[2] &= ~FATTR4_WORD2_SECURITY_LABEL;
3797 memcpy(server->cache_consistency_bitmask, res.attr_bitmask, sizeof(server->cache_consistency_bitmask));
3798 server->cache_consistency_bitmask[0] &= FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE;
3799 server->cache_consistency_bitmask[1] &= FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY;
3800 server->cache_consistency_bitmask[2] = 0;
3802 /* Avoid a regression due to buggy server */
3803 for (i = 0; i < ARRAY_SIZE(res.exclcreat_bitmask); i++)
3804 res.exclcreat_bitmask[i] &= res.attr_bitmask[i];
3805 memcpy(server->exclcreat_bitmask, res.exclcreat_bitmask,
3806 sizeof(server->exclcreat_bitmask));
3808 server->acl_bitmask = res.acl_bitmask;
3809 server->fh_expire_type = res.fh_expire_type;
3815 int nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle)
3817 struct nfs4_exception exception = {
3818 .interruptible = true,
3822 err = nfs4_handle_exception(server,
3823 _nfs4_server_capabilities(server, fhandle),
3825 } while (exception.retry);
3829 static int _nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle,
3830 struct nfs_fsinfo *info)
3833 struct nfs4_lookup_root_arg args = {
3836 struct nfs4_lookup_res res = {
3838 .fattr = info->fattr,
3841 struct rpc_message msg = {
3842 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP_ROOT],
3847 bitmask[0] = nfs4_fattr_bitmap[0];
3848 bitmask[1] = nfs4_fattr_bitmap[1];
3850 * Process the label in the upcoming getfattr
3852 bitmask[2] = nfs4_fattr_bitmap[2] & ~FATTR4_WORD2_SECURITY_LABEL;
3854 nfs_fattr_init(info->fattr);
3855 return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0);
3858 static int nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle,
3859 struct nfs_fsinfo *info)
3861 struct nfs4_exception exception = {
3862 .interruptible = true,
3866 err = _nfs4_lookup_root(server, fhandle, info);
3867 trace_nfs4_lookup_root(server, fhandle, info->fattr, err);
3870 case -NFS4ERR_WRONGSEC:
3873 err = nfs4_handle_exception(server, err, &exception);
3875 } while (exception.retry);
3880 static int nfs4_lookup_root_sec(struct nfs_server *server, struct nfs_fh *fhandle,
3881 struct nfs_fsinfo *info, rpc_authflavor_t flavor)
3883 struct rpc_auth_create_args auth_args = {
3884 .pseudoflavor = flavor,
3886 struct rpc_auth *auth;
3888 auth = rpcauth_create(&auth_args, server->client);
3891 return nfs4_lookup_root(server, fhandle, info);
3895 * Retry pseudoroot lookup with various security flavors. We do this when:
3897 * NFSv4.0: the PUTROOTFH operation returns NFS4ERR_WRONGSEC
3898 * NFSv4.1: the server does not support the SECINFO_NO_NAME operation
3900 * Returns zero on success, or a negative NFS4ERR value, or a
3901 * negative errno value.
3903 static int nfs4_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle,
3904 struct nfs_fsinfo *info)
3906 /* Per 3530bis 15.33.5 */
3907 static const rpc_authflavor_t flav_array[] = {
3911 RPC_AUTH_UNIX, /* courtesy */
3914 int status = -EPERM;
3917 if (server->auth_info.flavor_len > 0) {
3918 /* try each flavor specified by user */
3919 for (i = 0; i < server->auth_info.flavor_len; i++) {
3920 status = nfs4_lookup_root_sec(server, fhandle, info,
3921 server->auth_info.flavors[i]);
3922 if (status == -NFS4ERR_WRONGSEC || status == -EACCES)
3927 /* no flavors specified by user, try default list */
3928 for (i = 0; i < ARRAY_SIZE(flav_array); i++) {
3929 status = nfs4_lookup_root_sec(server, fhandle, info,
3931 if (status == -NFS4ERR_WRONGSEC || status == -EACCES)
3938 * -EACCES could mean that the user doesn't have correct permissions
3939 * to access the mount. It could also mean that we tried to mount
3940 * with a gss auth flavor, but rpc.gssd isn't running. Either way,
3941 * existing mount programs don't handle -EACCES very well so it should
3942 * be mapped to -EPERM instead.
3944 if (status == -EACCES)
3950 * nfs4_proc_get_rootfh - get file handle for server's pseudoroot
3951 * @server: initialized nfs_server handle
3952 * @fhandle: we fill in the pseudo-fs root file handle
3953 * @info: we fill in an FSINFO struct
3954 * @auth_probe: probe the auth flavours
3956 * Returns zero on success, or a negative errno.
3958 int nfs4_proc_get_rootfh(struct nfs_server *server, struct nfs_fh *fhandle,
3959 struct nfs_fsinfo *info,
3965 status = nfs4_lookup_root(server, fhandle, info);
3967 if (auth_probe || status == NFS4ERR_WRONGSEC)
3968 status = server->nfs_client->cl_mvops->find_root_sec(server,
3972 status = nfs4_server_capabilities(server, fhandle);
3974 status = nfs4_do_fsinfo(server, fhandle, info);
3976 return nfs4_map_errors(status);
3979 static int nfs4_proc_get_root(struct nfs_server *server, struct nfs_fh *mntfh,
3980 struct nfs_fsinfo *info)
3983 struct nfs_fattr *fattr = info->fattr;
3984 struct nfs4_label *label = NULL;
3986 error = nfs4_server_capabilities(server, mntfh);
3988 dprintk("nfs4_get_root: getcaps error = %d\n", -error);
3992 label = nfs4_label_alloc(server, GFP_KERNEL);
3994 return PTR_ERR(label);
3996 error = nfs4_proc_getattr(server, mntfh, fattr, label, NULL);
3998 dprintk("nfs4_get_root: getattr error = %d\n", -error);
3999 goto err_free_label;
4002 if (fattr->valid & NFS_ATTR_FATTR_FSID &&
4003 !nfs_fsid_equal(&server->fsid, &fattr->fsid))
4004 memcpy(&server->fsid, &fattr->fsid, sizeof(server->fsid));
4007 nfs4_label_free(label);
4013 * Get locations and (maybe) other attributes of a referral.
4014 * Note that we'll actually follow the referral later when
4015 * we detect fsid mismatch in inode revalidation
4017 static int nfs4_get_referral(struct rpc_clnt *client, struct inode *dir,
4018 const struct qstr *name, struct nfs_fattr *fattr,
4019 struct nfs_fh *fhandle)
4021 int status = -ENOMEM;
4022 struct page *page = NULL;
4023 struct nfs4_fs_locations *locations = NULL;
4025 page = alloc_page(GFP_KERNEL);
4028 locations = kmalloc(sizeof(struct nfs4_fs_locations), GFP_KERNEL);
4029 if (locations == NULL)
4032 status = nfs4_proc_fs_locations(client, dir, name, locations, page);
4037 * If the fsid didn't change, this is a migration event, not a
4038 * referral. Cause us to drop into the exception handler, which
4039 * will kick off migration recovery.
4041 if (nfs_fsid_equal(&NFS_SERVER(dir)->fsid, &locations->fattr.fsid)) {
4042 dprintk("%s: server did not return a different fsid for"
4043 " a referral at %s\n", __func__, name->name);
4044 status = -NFS4ERR_MOVED;
4047 /* Fixup attributes for the nfs_lookup() call to nfs_fhget() */
4048 nfs_fixup_referral_attributes(&locations->fattr);
4050 /* replace the lookup nfs_fattr with the locations nfs_fattr */
4051 memcpy(fattr, &locations->fattr, sizeof(struct nfs_fattr));
4052 memset(fhandle, 0, sizeof(struct nfs_fh));
4060 static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle,
4061 struct nfs_fattr *fattr, struct nfs4_label *label,
4062 struct inode *inode)
4064 __u32 bitmask[NFS4_BITMASK_SZ];
4065 struct nfs4_getattr_arg args = {
4069 struct nfs4_getattr_res res = {
4074 struct rpc_message msg = {
4075 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETATTR],
4079 unsigned short task_flags = 0;
4081 /* Is this is an attribute revalidation, subject to softreval? */
4082 if (inode && (server->flags & NFS_MOUNT_SOFTREVAL))
4083 task_flags |= RPC_TASK_TIMEOUT;
4085 nfs4_bitmap_copy_adjust(bitmask, nfs4_bitmask(server, label), inode);
4087 nfs_fattr_init(fattr);
4088 nfs4_init_sequence(&args.seq_args, &res.seq_res, 0, 0);
4089 return nfs4_do_call_sync(server->client, server, &msg,
4090 &args.seq_args, &res.seq_res, task_flags);
4093 int nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle,
4094 struct nfs_fattr *fattr, struct nfs4_label *label,
4095 struct inode *inode)
4097 struct nfs4_exception exception = {
4098 .interruptible = true,
4102 err = _nfs4_proc_getattr(server, fhandle, fattr, label, inode);
4103 trace_nfs4_getattr(server, fhandle, fattr, err);
4104 err = nfs4_handle_exception(server, err,
4106 } while (exception.retry);
4111 * The file is not closed if it is opened due to the a request to change
4112 * the size of the file. The open call will not be needed once the
4113 * VFS layer lookup-intents are implemented.
4115 * Close is called when the inode is destroyed.
4116 * If we haven't opened the file for O_WRONLY, we
4117 * need to in the size_change case to obtain a stateid.
4120 * Because OPEN is always done by name in nfsv4, it is
4121 * possible that we opened a different file by the same
4122 * name. We can recognize this race condition, but we
4123 * can't do anything about it besides returning an error.
4125 * This will be fixed with VFS changes (lookup-intent).
4128 nfs4_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr,
4129 struct iattr *sattr)
4131 struct inode *inode = d_inode(dentry);
4132 const struct cred *cred = NULL;
4133 struct nfs_open_context *ctx = NULL;
4134 struct nfs4_label *label = NULL;
4137 if (pnfs_ld_layoutret_on_setattr(inode) &&
4138 sattr->ia_valid & ATTR_SIZE &&
4139 sattr->ia_size < i_size_read(inode))
4140 pnfs_commit_and_return_layout(inode);
4142 nfs_fattr_init(fattr);
4144 /* Deal with open(O_TRUNC) */
4145 if (sattr->ia_valid & ATTR_OPEN)
4146 sattr->ia_valid &= ~(ATTR_MTIME|ATTR_CTIME);
4148 /* Optimization: if the end result is no change, don't RPC */
4149 if ((sattr->ia_valid & ~(ATTR_FILE|ATTR_OPEN)) == 0)
4152 /* Search for an existing open(O_WRITE) file */
4153 if (sattr->ia_valid & ATTR_FILE) {
4155 ctx = nfs_file_open_context(sattr->ia_file);
4160 label = nfs4_label_alloc(NFS_SERVER(inode), GFP_KERNEL);
4162 return PTR_ERR(label);
4164 /* Return any delegations if we're going to change ACLs */
4165 if ((sattr->ia_valid & (ATTR_MODE|ATTR_UID|ATTR_GID)) != 0)
4166 nfs4_inode_make_writeable(inode);
4168 status = nfs4_do_setattr(inode, cred, fattr, sattr, ctx, NULL, label);
4170 nfs_setattr_update_inode(inode, sattr, fattr);
4171 nfs_setsecurity(inode, fattr, label);
4173 nfs4_label_free(label);
4177 static int _nfs4_proc_lookup(struct rpc_clnt *clnt, struct inode *dir,
4178 const struct qstr *name, struct nfs_fh *fhandle,
4179 struct nfs_fattr *fattr, struct nfs4_label *label)
4181 struct nfs_server *server = NFS_SERVER(dir);
4183 struct nfs4_lookup_arg args = {
4184 .bitmask = server->attr_bitmask,
4185 .dir_fh = NFS_FH(dir),
4188 struct nfs4_lookup_res res = {
4194 struct rpc_message msg = {
4195 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP],
4200 args.bitmask = nfs4_bitmask(server, label);
4202 nfs_fattr_init(fattr);
4204 dprintk("NFS call lookup %s\n", name->name);
4205 status = nfs4_call_sync(clnt, server, &msg, &args.seq_args, &res.seq_res, 0);
4206 dprintk("NFS reply lookup: %d\n", status);
4210 static void nfs_fixup_secinfo_attributes(struct nfs_fattr *fattr)
4212 fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE |
4213 NFS_ATTR_FATTR_NLINK | NFS_ATTR_FATTR_MOUNTPOINT;
4214 fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO;
4218 static int nfs4_proc_lookup_common(struct rpc_clnt **clnt, struct inode *dir,
4219 const struct qstr *name, struct nfs_fh *fhandle,
4220 struct nfs_fattr *fattr, struct nfs4_label *label)
4222 struct nfs4_exception exception = {
4223 .interruptible = true,
4225 struct rpc_clnt *client = *clnt;
4228 err = _nfs4_proc_lookup(client, dir, name, fhandle, fattr, label);
4229 trace_nfs4_lookup(dir, name, err);
4231 case -NFS4ERR_BADNAME:
4234 case -NFS4ERR_MOVED:
4235 err = nfs4_get_referral(client, dir, name, fattr, fhandle);
4236 if (err == -NFS4ERR_MOVED)
4237 err = nfs4_handle_exception(NFS_SERVER(dir), err, &exception);
4239 case -NFS4ERR_WRONGSEC:
4241 if (client != *clnt)
4243 client = nfs4_negotiate_security(client, dir, name);
4245 return PTR_ERR(client);
4247 exception.retry = 1;
4250 err = nfs4_handle_exception(NFS_SERVER(dir), err, &exception);
4252 } while (exception.retry);
4257 else if (client != *clnt)
4258 rpc_shutdown_client(client);
4263 static int nfs4_proc_lookup(struct inode *dir, const struct qstr *name,
4264 struct nfs_fh *fhandle, struct nfs_fattr *fattr,
4265 struct nfs4_label *label)
4268 struct rpc_clnt *client = NFS_CLIENT(dir);
4270 status = nfs4_proc_lookup_common(&client, dir, name, fhandle, fattr, label);
4271 if (client != NFS_CLIENT(dir)) {
4272 rpc_shutdown_client(client);
4273 nfs_fixup_secinfo_attributes(fattr);
4279 nfs4_proc_lookup_mountpoint(struct inode *dir, const struct qstr *name,
4280 struct nfs_fh *fhandle, struct nfs_fattr *fattr)
4282 struct rpc_clnt *client = NFS_CLIENT(dir);
4285 status = nfs4_proc_lookup_common(&client, dir, name, fhandle, fattr, NULL);
4287 return ERR_PTR(status);
4288 return (client == NFS_CLIENT(dir)) ? rpc_clone_client(client) : client;
4291 static int _nfs4_proc_lookupp(struct inode *inode,
4292 struct nfs_fh *fhandle, struct nfs_fattr *fattr,
4293 struct nfs4_label *label)
4295 struct rpc_clnt *clnt = NFS_CLIENT(inode);
4296 struct nfs_server *server = NFS_SERVER(inode);
4298 struct nfs4_lookupp_arg args = {
4299 .bitmask = server->attr_bitmask,
4300 .fh = NFS_FH(inode),
4302 struct nfs4_lookupp_res res = {
4308 struct rpc_message msg = {
4309 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUPP],
4314 args.bitmask = nfs4_bitmask(server, label);
4316 nfs_fattr_init(fattr);
4318 dprintk("NFS call lookupp ino=0x%lx\n", inode->i_ino);
4319 status = nfs4_call_sync(clnt, server, &msg, &args.seq_args,
4321 dprintk("NFS reply lookupp: %d\n", status);
4325 static int nfs4_proc_lookupp(struct inode *inode, struct nfs_fh *fhandle,
4326 struct nfs_fattr *fattr, struct nfs4_label *label)
4328 struct nfs4_exception exception = {
4329 .interruptible = true,
4333 err = _nfs4_proc_lookupp(inode, fhandle, fattr, label);
4334 trace_nfs4_lookupp(inode, err);
4335 err = nfs4_handle_exception(NFS_SERVER(inode), err,
4337 } while (exception.retry);
4341 static int _nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry)
4343 struct nfs_server *server = NFS_SERVER(inode);
4344 struct nfs4_accessargs args = {
4345 .fh = NFS_FH(inode),
4346 .access = entry->mask,
4348 struct nfs4_accessres res = {
4351 struct rpc_message msg = {
4352 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_ACCESS],
4355 .rpc_cred = entry->cred,
4359 if (!nfs4_have_delegation(inode, FMODE_READ)) {
4360 res.fattr = nfs_alloc_fattr();
4361 if (res.fattr == NULL)
4363 args.bitmask = server->cache_consistency_bitmask;
4365 status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0);
4367 nfs_access_set_mask(entry, res.access);
4369 nfs_refresh_inode(inode, res.fattr);
4371 nfs_free_fattr(res.fattr);
4375 static int nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry)
4377 struct nfs4_exception exception = {
4378 .interruptible = true,
4382 err = _nfs4_proc_access(inode, entry);
4383 trace_nfs4_access(inode, err);
4384 err = nfs4_handle_exception(NFS_SERVER(inode), err,
4386 } while (exception.retry);
4391 * TODO: For the time being, we don't try to get any attributes
4392 * along with any of the zero-copy operations READ, READDIR,
4395 * In the case of the first three, we want to put the GETATTR
4396 * after the read-type operation -- this is because it is hard
4397 * to predict the length of a GETATTR response in v4, and thus
4398 * align the READ data correctly. This means that the GETATTR
4399 * may end up partially falling into the page cache, and we should
4400 * shift it into the 'tail' of the xdr_buf before processing.
4401 * To do this efficiently, we need to know the total length
4402 * of data received, which doesn't seem to be available outside
4405 * In the case of WRITE, we also want to put the GETATTR after
4406 * the operation -- in this case because we want to make sure
4407 * we get the post-operation mtime and size.
4409 * Both of these changes to the XDR layer would in fact be quite
4410 * minor, but I decided to leave them for a subsequent patch.
4412 static int _nfs4_proc_readlink(struct inode *inode, struct page *page,
4413 unsigned int pgbase, unsigned int pglen)
4415 struct nfs4_readlink args = {
4416 .fh = NFS_FH(inode),
4421 struct nfs4_readlink_res res;
4422 struct rpc_message msg = {
4423 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READLINK],
4428 return nfs4_call_sync(NFS_SERVER(inode)->client, NFS_SERVER(inode), &msg, &args.seq_args, &res.seq_res, 0);
4431 static int nfs4_proc_readlink(struct inode *inode, struct page *page,
4432 unsigned int pgbase, unsigned int pglen)
4434 struct nfs4_exception exception = {
4435 .interruptible = true,
4439 err = _nfs4_proc_readlink(inode, page, pgbase, pglen);
4440 trace_nfs4_readlink(inode, err);
4441 err = nfs4_handle_exception(NFS_SERVER(inode), err,
4443 } while (exception.retry);
4448 * This is just for mknod. open(O_CREAT) will always do ->open_context().
4451 nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
4454 struct nfs_server *server = NFS_SERVER(dir);
4455 struct nfs4_label l, *ilabel = NULL;
4456 struct nfs_open_context *ctx;
4457 struct nfs4_state *state;
4460 ctx = alloc_nfs_open_context(dentry, FMODE_READ, NULL);
4462 return PTR_ERR(ctx);
4464 ilabel = nfs4_label_init_security(dir, dentry, sattr, &l);
4466 if (!(server->attr_bitmask[2] & FATTR4_WORD2_MODE_UMASK))
4467 sattr->ia_mode &= ~current_umask();
4468 state = nfs4_do_open(dir, ctx, flags, sattr, ilabel, NULL);
4469 if (IS_ERR(state)) {
4470 status = PTR_ERR(state);
4474 nfs4_label_release_security(ilabel);
4475 put_nfs_open_context(ctx);
4480 _nfs4_proc_remove(struct inode *dir, const struct qstr *name, u32 ftype)
4482 struct nfs_server *server = NFS_SERVER(dir);
4483 struct nfs_removeargs args = {
4487 struct nfs_removeres res = {
4490 struct rpc_message msg = {
4491 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE],
4495 unsigned long timestamp = jiffies;
4498 status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 1);
4500 spin_lock(&dir->i_lock);
4501 update_changeattr_locked(dir, &res.cinfo, timestamp, 0);
4502 /* Removing a directory decrements nlink in the parent */
4503 if (ftype == NF4DIR && dir->i_nlink > 2)
4504 nfs4_dec_nlink_locked(dir);
4505 spin_unlock(&dir->i_lock);
4510 static int nfs4_proc_remove(struct inode *dir, struct dentry *dentry)
4512 struct nfs4_exception exception = {
4513 .interruptible = true,
4515 struct inode *inode = d_inode(dentry);
4519 if (inode->i_nlink == 1)
4520 nfs4_inode_return_delegation(inode);
4522 nfs4_inode_make_writeable(inode);
4525 err = _nfs4_proc_remove(dir, &dentry->d_name, NF4REG);
4526 trace_nfs4_remove(dir, &dentry->d_name, err);
4527 err = nfs4_handle_exception(NFS_SERVER(dir), err,
4529 } while (exception.retry);
4533 static int nfs4_proc_rmdir(struct inode *dir, const struct qstr *name)
4535 struct nfs4_exception exception = {
4536 .interruptible = true,
4541 err = _nfs4_proc_remove(dir, name, NF4DIR);
4542 trace_nfs4_remove(dir, name, err);
4543 err = nfs4_handle_exception(NFS_SERVER(dir), err,
4545 } while (exception.retry);
4549 static void nfs4_proc_unlink_setup(struct rpc_message *msg,
4550 struct dentry *dentry,
4551 struct inode *inode)
4553 struct nfs_removeargs *args = msg->rpc_argp;
4554 struct nfs_removeres *res = msg->rpc_resp;
4556 res->server = NFS_SB(dentry->d_sb);
4557 msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE];
4558 nfs4_init_sequence(&args->seq_args, &res->seq_res, 1, 0);
4560 nfs_fattr_init(res->dir_attr);
4563 nfs4_inode_return_delegation(inode);
4566 static void nfs4_proc_unlink_rpc_prepare(struct rpc_task *task, struct nfs_unlinkdata *data)
4568 nfs4_setup_sequence(NFS_SB(data->dentry->d_sb)->nfs_client,
4569 &data->args.seq_args,
4574 static int nfs4_proc_unlink_done(struct rpc_task *task, struct inode *dir)
4576 struct nfs_unlinkdata *data = task->tk_calldata;
4577 struct nfs_removeres *res = &data->res;
4579 if (!nfs4_sequence_done(task, &res->seq_res))
4581 if (nfs4_async_handle_error(task, res->server, NULL,
4582 &data->timeout) == -EAGAIN)
4584 if (task->tk_status == 0)
4585 update_changeattr(dir, &res->cinfo,
4586 res->dir_attr->time_start, 0);
4590 static void nfs4_proc_rename_setup(struct rpc_message *msg,
4591 struct dentry *old_dentry,
4592 struct dentry *new_dentry)
4594 struct nfs_renameargs *arg = msg->rpc_argp;
4595 struct nfs_renameres *res = msg->rpc_resp;
4596 struct inode *old_inode = d_inode(old_dentry);
4597 struct inode *new_inode = d_inode(new_dentry);
4600 nfs4_inode_make_writeable(old_inode);
4602 nfs4_inode_return_delegation(new_inode);
4603 msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME];
4604 res->server = NFS_SB(old_dentry->d_sb);
4605 nfs4_init_sequence(&arg->seq_args, &res->seq_res, 1, 0);
4608 static void nfs4_proc_rename_rpc_prepare(struct rpc_task *task, struct nfs_renamedata *data)
4610 nfs4_setup_sequence(NFS_SERVER(data->old_dir)->nfs_client,
4611 &data->args.seq_args,
4616 static int nfs4_proc_rename_done(struct rpc_task *task, struct inode *old_dir,
4617 struct inode *new_dir)
4619 struct nfs_renamedata *data = task->tk_calldata;
4620 struct nfs_renameres *res = &data->res;
4622 if (!nfs4_sequence_done(task, &res->seq_res))
4624 if (nfs4_async_handle_error(task, res->server, NULL, &data->timeout) == -EAGAIN)
4627 if (task->tk_status == 0) {
4628 if (new_dir != old_dir) {
4629 /* Note: If we moved a directory, nlink will change */
4630 update_changeattr(old_dir, &res->old_cinfo,
4631 res->old_fattr->time_start,
4632 NFS_INO_INVALID_OTHER);
4633 update_changeattr(new_dir, &res->new_cinfo,
4634 res->new_fattr->time_start,
4635 NFS_INO_INVALID_OTHER);
4637 update_changeattr(old_dir, &res->old_cinfo,
4638 res->old_fattr->time_start,
4644 static int _nfs4_proc_link(struct inode *inode, struct inode *dir, const struct qstr *name)
4646 struct nfs_server *server = NFS_SERVER(inode);
4647 __u32 bitmask[NFS4_BITMASK_SZ];
4648 struct nfs4_link_arg arg = {
4649 .fh = NFS_FH(inode),
4650 .dir_fh = NFS_FH(dir),
4654 struct nfs4_link_res res = {
4658 struct rpc_message msg = {
4659 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LINK],
4663 int status = -ENOMEM;
4665 res.fattr = nfs_alloc_fattr();
4666 if (res.fattr == NULL)
4669 res.label = nfs4_label_alloc(server, GFP_KERNEL);
4670 if (IS_ERR(res.label)) {
4671 status = PTR_ERR(res.label);
4675 nfs4_inode_make_writeable(inode);
4676 nfs4_bitmap_copy_adjust_setattr(bitmask, nfs4_bitmask(server, res.label), inode);
4678 status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1);
4680 update_changeattr(dir, &res.cinfo, res.fattr->time_start, 0);
4681 status = nfs_post_op_update_inode(inode, res.fattr);
4683 nfs_setsecurity(inode, res.fattr, res.label);
4687 nfs4_label_free(res.label);
4690 nfs_free_fattr(res.fattr);
4694 static int nfs4_proc_link(struct inode *inode, struct inode *dir, const struct qstr *name)
4696 struct nfs4_exception exception = {
4697 .interruptible = true,
4701 err = nfs4_handle_exception(NFS_SERVER(inode),
4702 _nfs4_proc_link(inode, dir, name),
4704 } while (exception.retry);
4708 struct nfs4_createdata {
4709 struct rpc_message msg;
4710 struct nfs4_create_arg arg;
4711 struct nfs4_create_res res;
4713 struct nfs_fattr fattr;
4714 struct nfs4_label *label;
4717 static struct nfs4_createdata *nfs4_alloc_createdata(struct inode *dir,
4718 const struct qstr *name, struct iattr *sattr, u32 ftype)
4720 struct nfs4_createdata *data;
4722 data = kzalloc(sizeof(*data), GFP_KERNEL);
4724 struct nfs_server *server = NFS_SERVER(dir);
4726 data->label = nfs4_label_alloc(server, GFP_KERNEL);
4727 if (IS_ERR(data->label))
4730 data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE];
4731 data->msg.rpc_argp = &data->arg;
4732 data->msg.rpc_resp = &data->res;
4733 data->arg.dir_fh = NFS_FH(dir);
4734 data->arg.server = server;
4735 data->arg.name = name;
4736 data->arg.attrs = sattr;
4737 data->arg.ftype = ftype;
4738 data->arg.bitmask = nfs4_bitmask(server, data->label);
4739 data->arg.umask = current_umask();
4740 data->res.server = server;
4741 data->res.fh = &data->fh;
4742 data->res.fattr = &data->fattr;
4743 data->res.label = data->label;
4744 nfs_fattr_init(data->res.fattr);
4752 static int nfs4_do_create(struct inode *dir, struct dentry *dentry, struct nfs4_createdata *data)
4754 int status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &data->msg,
4755 &data->arg.seq_args, &data->res.seq_res, 1);
4757 spin_lock(&dir->i_lock);
4758 update_changeattr_locked(dir, &data->res.dir_cinfo,
4759 data->res.fattr->time_start, 0);
4760 /* Creating a directory bumps nlink in the parent */
4761 if (data->arg.ftype == NF4DIR)
4762 nfs4_inc_nlink_locked(dir);
4763 spin_unlock(&dir->i_lock);
4764 status = nfs_instantiate(dentry, data->res.fh, data->res.fattr, data->res.label);
4769 static void nfs4_free_createdata(struct nfs4_createdata *data)
4771 nfs4_label_free(data->label);
4775 static int _nfs4_proc_symlink(struct inode *dir, struct dentry *dentry,
4776 struct page *page, unsigned int len, struct iattr *sattr,
4777 struct nfs4_label *label)
4779 struct nfs4_createdata *data;
4780 int status = -ENAMETOOLONG;
4782 if (len > NFS4_MAXPATHLEN)
4786 data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4LNK);
4790 data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SYMLINK];
4791 data->arg.u.symlink.pages = &page;
4792 data->arg.u.symlink.len = len;
4793 data->arg.label = label;
4795 status = nfs4_do_create(dir, dentry, data);
4797 nfs4_free_createdata(data);
4802 static int nfs4_proc_symlink(struct inode *dir, struct dentry *dentry,
4803 struct page *page, unsigned int len, struct iattr *sattr)
4805 struct nfs4_exception exception = {
4806 .interruptible = true,
4808 struct nfs4_label l, *label = NULL;
4811 label = nfs4_label_init_security(dir, dentry, sattr, &l);
4814 err = _nfs4_proc_symlink(dir, dentry, page, len, sattr, label);
4815 trace_nfs4_symlink(dir, &dentry->d_name, err);
4816 err = nfs4_handle_exception(NFS_SERVER(dir), err,
4818 } while (exception.retry);
4820 nfs4_label_release_security(label);
4824 static int _nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry,
4825 struct iattr *sattr, struct nfs4_label *label)
4827 struct nfs4_createdata *data;
4828 int status = -ENOMEM;
4830 data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4DIR);
4834 data->arg.label = label;
4835 status = nfs4_do_create(dir, dentry, data);
4837 nfs4_free_createdata(data);
4842 static int nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry,
4843 struct iattr *sattr)
4845 struct nfs_server *server = NFS_SERVER(dir);
4846 struct nfs4_exception exception = {
4847 .interruptible = true,
4849 struct nfs4_label l, *label = NULL;
4852 label = nfs4_label_init_security(dir, dentry, sattr, &l);
4854 if (!(server->attr_bitmask[2] & FATTR4_WORD2_MODE_UMASK))
4855 sattr->ia_mode &= ~current_umask();
4857 err = _nfs4_proc_mkdir(dir, dentry, sattr, label);
4858 trace_nfs4_mkdir(dir, &dentry->d_name, err);
4859 err = nfs4_handle_exception(NFS_SERVER(dir), err,
4861 } while (exception.retry);
4862 nfs4_label_release_security(label);
4867 static int _nfs4_proc_readdir(struct dentry *dentry, const struct cred *cred,
4868 u64 cookie, struct page **pages, unsigned int count, bool plus)
4870 struct inode *dir = d_inode(dentry);
4871 struct nfs4_readdir_arg args = {
4876 .bitmask = NFS_SERVER(d_inode(dentry))->attr_bitmask,
4879 struct nfs4_readdir_res res;
4880 struct rpc_message msg = {
4881 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READDIR],
4888 dprintk("%s: dentry = %pd2, cookie = %Lu\n", __func__,
4890 (unsigned long long)cookie);
4891 nfs4_setup_readdir(cookie, NFS_I(dir)->cookieverf, dentry, &args);
4892 res.pgbase = args.pgbase;
4893 status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &msg, &args.seq_args, &res.seq_res, 0);
4895 memcpy(NFS_I(dir)->cookieverf, res.verifier.data, NFS4_VERIFIER_SIZE);
4896 status += args.pgbase;
4899 nfs_invalidate_atime(dir);
4901 dprintk("%s: returns %d\n", __func__, status);
4905 static int nfs4_proc_readdir(struct dentry *dentry, const struct cred *cred,
4906 u64 cookie, struct page **pages, unsigned int count, bool plus)
4908 struct nfs4_exception exception = {
4909 .interruptible = true,
4913 err = _nfs4_proc_readdir(dentry, cred, cookie,
4914 pages, count, plus);
4915 trace_nfs4_readdir(d_inode(dentry), err);
4916 err = nfs4_handle_exception(NFS_SERVER(d_inode(dentry)), err,
4918 } while (exception.retry);
4922 static int _nfs4_proc_mknod(struct inode *dir, struct dentry *dentry,
4923 struct iattr *sattr, struct nfs4_label *label, dev_t rdev)
4925 struct nfs4_createdata *data;
4926 int mode = sattr->ia_mode;
4927 int status = -ENOMEM;
4929 data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4SOCK);
4934 data->arg.ftype = NF4FIFO;
4935 else if (S_ISBLK(mode)) {
4936 data->arg.ftype = NF4BLK;
4937 data->arg.u.device.specdata1 = MAJOR(rdev);
4938 data->arg.u.device.specdata2 = MINOR(rdev);
4940 else if (S_ISCHR(mode)) {
4941 data->arg.ftype = NF4CHR;
4942 data->arg.u.device.specdata1 = MAJOR(rdev);
4943 data->arg.u.device.specdata2 = MINOR(rdev);
4944 } else if (!S_ISSOCK(mode)) {
4949 data->arg.label = label;
4950 status = nfs4_do_create(dir, dentry, data);
4952 nfs4_free_createdata(data);
4957 static int nfs4_proc_mknod(struct inode *dir, struct dentry *dentry,
4958 struct iattr *sattr, dev_t rdev)
4960 struct nfs_server *server = NFS_SERVER(dir);
4961 struct nfs4_exception exception = {
4962 .interruptible = true,
4964 struct nfs4_label l, *label = NULL;
4967 label = nfs4_label_init_security(dir, dentry, sattr, &l);
4969 if (!(server->attr_bitmask[2] & FATTR4_WORD2_MODE_UMASK))
4970 sattr->ia_mode &= ~current_umask();
4972 err = _nfs4_proc_mknod(dir, dentry, sattr, label, rdev);
4973 trace_nfs4_mknod(dir, &dentry->d_name, err);
4974 err = nfs4_handle_exception(NFS_SERVER(dir), err,
4976 } while (exception.retry);
4978 nfs4_label_release_security(label);
4983 static int _nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle,
4984 struct nfs_fsstat *fsstat)
4986 struct nfs4_statfs_arg args = {
4988 .bitmask = server->attr_bitmask,
4990 struct nfs4_statfs_res res = {
4993 struct rpc_message msg = {
4994 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_STATFS],
4999 nfs_fattr_init(fsstat->fattr);
5000 return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0);
5003 static int nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsstat *fsstat)
5005 struct nfs4_exception exception = {
5006 .interruptible = true,
5010 err = nfs4_handle_exception(server,
5011 _nfs4_proc_statfs(server, fhandle, fsstat),
5013 } while (exception.retry);
5017 static int _nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle,
5018 struct nfs_fsinfo *fsinfo)
5020 struct nfs4_fsinfo_arg args = {
5022 .bitmask = server->attr_bitmask,
5024 struct nfs4_fsinfo_res res = {
5027 struct rpc_message msg = {
5028 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FSINFO],
5033 return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0);
5036 static int nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo)
5038 struct nfs4_exception exception = {
5039 .interruptible = true,
5041 unsigned long now = jiffies;
5045 err = _nfs4_do_fsinfo(server, fhandle, fsinfo);
5046 trace_nfs4_fsinfo(server, fhandle, fsinfo->fattr, err);
5048 nfs4_set_lease_period(server->nfs_client,
5049 fsinfo->lease_time * HZ,
5053 err = nfs4_handle_exception(server, err, &exception);
5054 } while (exception.retry);
5058 static int nfs4_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo)
5062 nfs_fattr_init(fsinfo->fattr);
5063 error = nfs4_do_fsinfo(server, fhandle, fsinfo);
5065 /* block layout checks this! */
5066 server->pnfs_blksize = fsinfo->blksize;
5067 set_pnfs_layoutdriver(server, fhandle, fsinfo);
5073 static int _nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle,
5074 struct nfs_pathconf *pathconf)
5076 struct nfs4_pathconf_arg args = {
5078 .bitmask = server->attr_bitmask,
5080 struct nfs4_pathconf_res res = {
5081 .pathconf = pathconf,
5083 struct rpc_message msg = {
5084 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_PATHCONF],
5089 /* None of the pathconf attributes are mandatory to implement */
5090 if ((args.bitmask[0] & nfs4_pathconf_bitmap[0]) == 0) {
5091 memset(pathconf, 0, sizeof(*pathconf));
5095 nfs_fattr_init(pathconf->fattr);
5096 return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0);
5099 static int nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle,
5100 struct nfs_pathconf *pathconf)
5102 struct nfs4_exception exception = {
5103 .interruptible = true,
5108 err = nfs4_handle_exception(server,
5109 _nfs4_proc_pathconf(server, fhandle, pathconf),
5111 } while (exception.retry);
5115 int nfs4_set_rw_stateid(nfs4_stateid *stateid,
5116 const struct nfs_open_context *ctx,
5117 const struct nfs_lock_context *l_ctx,
5120 return nfs4_select_rw_stateid(ctx->state, fmode, l_ctx, stateid, NULL);
5122 EXPORT_SYMBOL_GPL(nfs4_set_rw_stateid);
5124 static bool nfs4_stateid_is_current(nfs4_stateid *stateid,
5125 const struct nfs_open_context *ctx,
5126 const struct nfs_lock_context *l_ctx,
5129 nfs4_stateid _current_stateid;
5131 /* If the current stateid represents a lost lock, then exit */
5132 if (nfs4_set_rw_stateid(&_current_stateid, ctx, l_ctx, fmode) == -EIO)
5134 return nfs4_stateid_match(stateid, &_current_stateid);
5137 static bool nfs4_error_stateid_expired(int err)
5140 case -NFS4ERR_DELEG_REVOKED:
5141 case -NFS4ERR_ADMIN_REVOKED:
5142 case -NFS4ERR_BAD_STATEID:
5143 case -NFS4ERR_STALE_STATEID:
5144 case -NFS4ERR_OLD_STATEID:
5145 case -NFS4ERR_OPENMODE:
5146 case -NFS4ERR_EXPIRED:
5152 static int nfs4_read_done_cb(struct rpc_task *task, struct nfs_pgio_header *hdr)
5154 struct nfs_server *server = NFS_SERVER(hdr->inode);
5156 trace_nfs4_read(hdr, task->tk_status);
5157 if (task->tk_status < 0) {
5158 struct nfs4_exception exception = {
5159 .inode = hdr->inode,
5160 .state = hdr->args.context->state,
5161 .stateid = &hdr->args.stateid,
5163 task->tk_status = nfs4_async_handle_exception(task,
5164 server, task->tk_status, &exception);
5165 if (exception.retry) {
5166 rpc_restart_call_prepare(task);
5171 if (task->tk_status > 0)
5172 renew_lease(server, hdr->timestamp);
5176 static bool nfs4_read_stateid_changed(struct rpc_task *task,
5177 struct nfs_pgio_args *args)
5180 if (!nfs4_error_stateid_expired(task->tk_status) ||
5181 nfs4_stateid_is_current(&args->stateid,
5186 rpc_restart_call_prepare(task);
5190 static int nfs4_read_done(struct rpc_task *task, struct nfs_pgio_header *hdr)
5193 dprintk("--> %s\n", __func__);
5195 if (!nfs4_sequence_done(task, &hdr->res.seq_res))
5197 if (nfs4_read_stateid_changed(task, &hdr->args))
5199 if (task->tk_status > 0)
5200 nfs_invalidate_atime(hdr->inode);
5201 return hdr->pgio_done_cb ? hdr->pgio_done_cb(task, hdr) :
5202 nfs4_read_done_cb(task, hdr);
5205 static void nfs4_proc_read_setup(struct nfs_pgio_header *hdr,
5206 struct rpc_message *msg)
5208 hdr->timestamp = jiffies;
5209 if (!hdr->pgio_done_cb)
5210 hdr->pgio_done_cb = nfs4_read_done_cb;
5211 msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READ];
5212 nfs4_init_sequence(&hdr->args.seq_args, &hdr->res.seq_res, 0, 0);
5215 static int nfs4_proc_pgio_rpc_prepare(struct rpc_task *task,
5216 struct nfs_pgio_header *hdr)
5218 if (nfs4_setup_sequence(NFS_SERVER(hdr->inode)->nfs_client,
5219 &hdr->args.seq_args,
5223 if (nfs4_set_rw_stateid(&hdr->args.stateid, hdr->args.context,
5224 hdr->args.lock_context,
5225 hdr->rw_mode) == -EIO)
5227 if (unlikely(test_bit(NFS_CONTEXT_BAD, &hdr->args.context->flags)))
5232 static int nfs4_write_done_cb(struct rpc_task *task,
5233 struct nfs_pgio_header *hdr)
5235 struct inode *inode = hdr->inode;
5237 trace_nfs4_write(hdr, task->tk_status);
5238 if (task->tk_status < 0) {
5239 struct nfs4_exception exception = {
5240 .inode = hdr->inode,
5241 .state = hdr->args.context->state,
5242 .stateid = &hdr->args.stateid,
5244 task->tk_status = nfs4_async_handle_exception(task,
5245 NFS_SERVER(inode), task->tk_status,
5247 if (exception.retry) {
5248 rpc_restart_call_prepare(task);
5252 if (task->tk_status >= 0) {
5253 renew_lease(NFS_SERVER(inode), hdr->timestamp);
5254 nfs_writeback_update_inode(hdr);
5259 static bool nfs4_write_stateid_changed(struct rpc_task *task,
5260 struct nfs_pgio_args *args)
5263 if (!nfs4_error_stateid_expired(task->tk_status) ||
5264 nfs4_stateid_is_current(&args->stateid,
5269 rpc_restart_call_prepare(task);
5273 static int nfs4_write_done(struct rpc_task *task, struct nfs_pgio_header *hdr)
5275 if (!nfs4_sequence_done(task, &hdr->res.seq_res))
5277 if (nfs4_write_stateid_changed(task, &hdr->args))
5279 return hdr->pgio_done_cb ? hdr->pgio_done_cb(task, hdr) :
5280 nfs4_write_done_cb(task, hdr);
5284 bool nfs4_write_need_cache_consistency_data(struct nfs_pgio_header *hdr)
5286 /* Don't request attributes for pNFS or O_DIRECT writes */
5287 if (hdr->ds_clp != NULL || hdr->dreq != NULL)
5289 /* Otherwise, request attributes if and only if we don't hold
5292 return nfs4_have_delegation(hdr->inode, FMODE_READ) == 0;
5295 static void nfs4_proc_write_setup(struct nfs_pgio_header *hdr,
5296 struct rpc_message *msg,
5297 struct rpc_clnt **clnt)
5299 struct nfs_server *server = NFS_SERVER(hdr->inode);
5301 if (!nfs4_write_need_cache_consistency_data(hdr)) {
5302 hdr->args.bitmask = NULL;
5303 hdr->res.fattr = NULL;
5305 hdr->args.bitmask = server->cache_consistency_bitmask;
5307 if (!hdr->pgio_done_cb)
5308 hdr->pgio_done_cb = nfs4_write_done_cb;
5309 hdr->res.server = server;
5310 hdr->timestamp = jiffies;
5312 msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_WRITE];
5313 nfs4_init_sequence(&hdr->args.seq_args, &hdr->res.seq_res, 1, 0);
5314 nfs4_state_protect_write(server->nfs_client, clnt, msg, hdr);
5317 static void nfs4_proc_commit_rpc_prepare(struct rpc_task *task, struct nfs_commit_data *data)
5319 nfs4_setup_sequence(NFS_SERVER(data->inode)->nfs_client,
5320 &data->args.seq_args,
5325 static int nfs4_commit_done_cb(struct rpc_task *task, struct nfs_commit_data *data)
5327 struct inode *inode = data->inode;
5329 trace_nfs4_commit(data, task->tk_status);
5330 if (nfs4_async_handle_error(task, NFS_SERVER(inode),
5331 NULL, NULL) == -EAGAIN) {
5332 rpc_restart_call_prepare(task);
5338 static int nfs4_commit_done(struct rpc_task *task, struct nfs_commit_data *data)
5340 if (!nfs4_sequence_done(task, &data->res.seq_res))
5342 return data->commit_done_cb(task, data);
5345 static void nfs4_proc_commit_setup(struct nfs_commit_data *data, struct rpc_message *msg,
5346 struct rpc_clnt **clnt)
5348 struct nfs_server *server = NFS_SERVER(data->inode);
5350 if (data->commit_done_cb == NULL)
5351 data->commit_done_cb = nfs4_commit_done_cb;
5352 data->res.server = server;
5353 msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_COMMIT];
5354 nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 1, 0);
5355 nfs4_state_protect(server->nfs_client, NFS_SP4_MACH_CRED_COMMIT, clnt, msg);
5358 static int _nfs4_proc_commit(struct file *dst, struct nfs_commitargs *args,
5359 struct nfs_commitres *res)
5361 struct inode *dst_inode = file_inode(dst);
5362 struct nfs_server *server = NFS_SERVER(dst_inode);
5363 struct rpc_message msg = {
5364 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_COMMIT],
5369 args->fh = NFS_FH(dst_inode);
5370 return nfs4_call_sync(server->client, server, &msg,
5371 &args->seq_args, &res->seq_res, 1);
5374 int nfs4_proc_commit(struct file *dst, __u64 offset, __u32 count, struct nfs_commitres *res)
5376 struct nfs_commitargs args = {
5380 struct nfs_server *dst_server = NFS_SERVER(file_inode(dst));
5381 struct nfs4_exception exception = { };
5385 status = _nfs4_proc_commit(dst, &args, res);
5386 status = nfs4_handle_exception(dst_server, status, &exception);
5387 } while (exception.retry);
5392 struct nfs4_renewdata {
5393 struct nfs_client *client;
5394 unsigned long timestamp;
5398 * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special
5399 * standalone procedure for queueing an asynchronous RENEW.
5401 static void nfs4_renew_release(void *calldata)
5403 struct nfs4_renewdata *data = calldata;
5404 struct nfs_client *clp = data->client;
5406 if (refcount_read(&clp->cl_count) > 1)
5407 nfs4_schedule_state_renewal(clp);
5408 nfs_put_client(clp);
5412 static void nfs4_renew_done(struct rpc_task *task, void *calldata)
5414 struct nfs4_renewdata *data = calldata;
5415 struct nfs_client *clp = data->client;
5416 unsigned long timestamp = data->timestamp;
5418 trace_nfs4_renew_async(clp, task->tk_status);
5419 switch (task->tk_status) {
5422 case -NFS4ERR_LEASE_MOVED:
5423 nfs4_schedule_lease_moved_recovery(clp);
5426 /* Unless we're shutting down, schedule state recovery! */
5427 if (test_bit(NFS_CS_RENEWD, &clp->cl_res_state) == 0)
5429 if (task->tk_status != NFS4ERR_CB_PATH_DOWN) {
5430 nfs4_schedule_lease_recovery(clp);
5433 nfs4_schedule_path_down_recovery(clp);
5435 do_renew_lease(clp, timestamp);
5438 static const struct rpc_call_ops nfs4_renew_ops = {
5439 .rpc_call_done = nfs4_renew_done,
5440 .rpc_release = nfs4_renew_release,
5443 static int nfs4_proc_async_renew(struct nfs_client *clp, const struct cred *cred, unsigned renew_flags)
5445 struct rpc_message msg = {
5446 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW],
5450 struct nfs4_renewdata *data;
5452 if (renew_flags == 0)
5454 if (!refcount_inc_not_zero(&clp->cl_count))
5456 data = kmalloc(sizeof(*data), GFP_NOFS);
5458 nfs_put_client(clp);
5462 data->timestamp = jiffies;
5463 return rpc_call_async(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT,
5464 &nfs4_renew_ops, data);
5467 static int nfs4_proc_renew(struct nfs_client *clp, const struct cred *cred)
5469 struct rpc_message msg = {
5470 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW],
5474 unsigned long now = jiffies;
5477 status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT);
5480 do_renew_lease(clp, now);
5484 static inline int nfs4_server_supports_acls(struct nfs_server *server)
5486 return server->caps & NFS_CAP_ACLS;
5489 /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_SIZE, and that
5490 * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_SIZE) bytes on
5493 #define NFS4ACL_MAXPAGES DIV_ROUND_UP(XATTR_SIZE_MAX, PAGE_SIZE)
5495 static int buf_to_pages_noslab(const void *buf, size_t buflen,
5496 struct page **pages)
5498 struct page *newpage, **spages;
5504 len = min_t(size_t, PAGE_SIZE, buflen);
5505 newpage = alloc_page(GFP_KERNEL);
5507 if (newpage == NULL)
5509 memcpy(page_address(newpage), buf, len);
5514 } while (buflen != 0);
5520 __free_page(spages[rc-1]);
5524 struct nfs4_cached_acl {
5530 static void nfs4_set_cached_acl(struct inode *inode, struct nfs4_cached_acl *acl)
5532 struct nfs_inode *nfsi = NFS_I(inode);
5534 spin_lock(&inode->i_lock);
5535 kfree(nfsi->nfs4_acl);
5536 nfsi->nfs4_acl = acl;
5537 spin_unlock(&inode->i_lock);
5540 static void nfs4_zap_acl_attr(struct inode *inode)
5542 nfs4_set_cached_acl(inode, NULL);
5545 static inline ssize_t nfs4_read_cached_acl(struct inode *inode, char *buf, size_t buflen)
5547 struct nfs_inode *nfsi = NFS_I(inode);
5548 struct nfs4_cached_acl *acl;
5551 spin_lock(&inode->i_lock);
5552 acl = nfsi->nfs4_acl;
5555 if (buf == NULL) /* user is just asking for length */
5557 if (acl->cached == 0)
5559 ret = -ERANGE; /* see getxattr(2) man page */
5560 if (acl->len > buflen)
5562 memcpy(buf, acl->data, acl->len);
5566 spin_unlock(&inode->i_lock);
5570 static void nfs4_write_cached_acl(struct inode *inode, struct page **pages, size_t pgbase, size_t acl_len)
5572 struct nfs4_cached_acl *acl;
5573 size_t buflen = sizeof(*acl) + acl_len;
5575 if (buflen <= PAGE_SIZE) {
5576 acl = kmalloc(buflen, GFP_KERNEL);
5580 _copy_from_pages(acl->data, pages, pgbase, acl_len);
5582 acl = kmalloc(sizeof(*acl), GFP_KERNEL);
5589 nfs4_set_cached_acl(inode, acl);
5593 * The getxattr API returns the required buffer length when called with a
5594 * NULL buf. The NFSv4 acl tool then calls getxattr again after allocating
5595 * the required buf. On a NULL buf, we send a page of data to the server
5596 * guessing that the ACL request can be serviced by a page. If so, we cache
5597 * up to the page of ACL data, and the 2nd call to getxattr is serviced by
5598 * the cache. If not so, we throw away the page, and cache the required
5599 * length. The next getxattr call will then produce another round trip to
5600 * the server, this time with the input buf of the required size.
5602 static ssize_t __nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen)
5604 struct page *pages[NFS4ACL_MAXPAGES + 1] = {NULL, };
5605 struct nfs_getaclargs args = {
5606 .fh = NFS_FH(inode),
5610 struct nfs_getaclres res = {
5613 struct rpc_message msg = {
5614 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETACL],
5618 unsigned int npages = DIV_ROUND_UP(buflen, PAGE_SIZE) + 1;
5619 int ret = -ENOMEM, i;
5621 if (npages > ARRAY_SIZE(pages))
5624 for (i = 0; i < npages; i++) {
5625 pages[i] = alloc_page(GFP_KERNEL);
5630 /* for decoding across pages */
5631 res.acl_scratch = alloc_page(GFP_KERNEL);
5632 if (!res.acl_scratch)
5635 args.acl_len = npages * PAGE_SIZE;
5637 dprintk("%s buf %p buflen %zu npages %d args.acl_len %zu\n",
5638 __func__, buf, buflen, npages, args.acl_len);
5639 ret = nfs4_call_sync(NFS_SERVER(inode)->client, NFS_SERVER(inode),
5640 &msg, &args.seq_args, &res.seq_res, 0);
5644 /* Handle the case where the passed-in buffer is too short */
5645 if (res.acl_flags & NFS4_ACL_TRUNC) {
5646 /* Did the user only issue a request for the acl length? */
5652 nfs4_write_cached_acl(inode, pages, res.acl_data_offset, res.acl_len);
5654 if (res.acl_len > buflen) {
5658 _copy_from_pages(buf, pages, res.acl_data_offset, res.acl_len);
5663 for (i = 0; i < npages; i++)
5665 __free_page(pages[i]);
5666 if (res.acl_scratch)
5667 __free_page(res.acl_scratch);
5671 static ssize_t nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen)
5673 struct nfs4_exception exception = {
5674 .interruptible = true,
5678 ret = __nfs4_get_acl_uncached(inode, buf, buflen);
5679 trace_nfs4_get_acl(inode, ret);
5682 ret = nfs4_handle_exception(NFS_SERVER(inode), ret, &exception);
5683 } while (exception.retry);
5687 static ssize_t nfs4_proc_get_acl(struct inode *inode, void *buf, size_t buflen)
5689 struct nfs_server *server = NFS_SERVER(inode);
5692 if (!nfs4_server_supports_acls(server))
5694 ret = nfs_revalidate_inode(server, inode);
5697 if (NFS_I(inode)->cache_validity & NFS_INO_INVALID_ACL)
5698 nfs_zap_acl_cache(inode);
5699 ret = nfs4_read_cached_acl(inode, buf, buflen);
5701 /* -ENOENT is returned if there is no ACL or if there is an ACL
5702 * but no cached acl data, just the acl length */
5704 return nfs4_get_acl_uncached(inode, buf, buflen);
5707 static int __nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen)
5709 struct nfs_server *server = NFS_SERVER(inode);
5710 struct page *pages[NFS4ACL_MAXPAGES];
5711 struct nfs_setaclargs arg = {
5712 .fh = NFS_FH(inode),
5716 struct nfs_setaclres res;
5717 struct rpc_message msg = {
5718 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETACL],
5722 unsigned int npages = DIV_ROUND_UP(buflen, PAGE_SIZE);
5725 if (!nfs4_server_supports_acls(server))
5727 if (npages > ARRAY_SIZE(pages))
5729 i = buf_to_pages_noslab(buf, buflen, arg.acl_pages);
5732 nfs4_inode_make_writeable(inode);
5733 ret = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1);
5736 * Free each page after tx, so the only ref left is
5737 * held by the network stack
5740 put_page(pages[i-1]);
5743 * Acl update can result in inode attribute update.
5744 * so mark the attribute cache invalid.
5746 spin_lock(&inode->i_lock);
5747 NFS_I(inode)->cache_validity |= NFS_INO_INVALID_CHANGE
5748 | NFS_INO_INVALID_CTIME
5749 | NFS_INO_REVAL_FORCED;
5750 spin_unlock(&inode->i_lock);
5751 nfs_access_zap_cache(inode);
5752 nfs_zap_acl_cache(inode);
5756 static int nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen)
5758 struct nfs4_exception exception = { };
5761 err = __nfs4_proc_set_acl(inode, buf, buflen);
5762 trace_nfs4_set_acl(inode, err);
5763 err = nfs4_handle_exception(NFS_SERVER(inode), err,
5765 } while (exception.retry);
5769 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
5770 static int _nfs4_get_security_label(struct inode *inode, void *buf,
5773 struct nfs_server *server = NFS_SERVER(inode);
5774 struct nfs_fattr fattr;
5775 struct nfs4_label label = {0, 0, buflen, buf};
5777 u32 bitmask[3] = { 0, 0, FATTR4_WORD2_SECURITY_LABEL };
5778 struct nfs4_getattr_arg arg = {
5779 .fh = NFS_FH(inode),
5782 struct nfs4_getattr_res res = {
5787 struct rpc_message msg = {
5788 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETATTR],
5794 nfs_fattr_init(&fattr);
5796 ret = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 0);
5799 if (!(fattr.valid & NFS_ATTR_FATTR_V4_SECURITY_LABEL))
5801 if (buflen < label.len)
5806 static int nfs4_get_security_label(struct inode *inode, void *buf,
5809 struct nfs4_exception exception = {
5810 .interruptible = true,
5814 if (!nfs_server_capable(inode, NFS_CAP_SECURITY_LABEL))
5818 err = _nfs4_get_security_label(inode, buf, buflen);
5819 trace_nfs4_get_security_label(inode, err);
5820 err = nfs4_handle_exception(NFS_SERVER(inode), err,
5822 } while (exception.retry);
5826 static int _nfs4_do_set_security_label(struct inode *inode,
5827 struct nfs4_label *ilabel,
5828 struct nfs_fattr *fattr,
5829 struct nfs4_label *olabel)
5832 struct iattr sattr = {0};
5833 struct nfs_server *server = NFS_SERVER(inode);
5834 const u32 bitmask[3] = { 0, 0, FATTR4_WORD2_SECURITY_LABEL };
5835 struct nfs_setattrargs arg = {
5836 .fh = NFS_FH(inode),
5842 struct nfs_setattrres res = {
5847 struct rpc_message msg = {
5848 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETATTR],
5854 nfs4_stateid_copy(&arg.stateid, &zero_stateid);
5856 status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1);
5858 dprintk("%s failed: %d\n", __func__, status);
5863 static int nfs4_do_set_security_label(struct inode *inode,
5864 struct nfs4_label *ilabel,
5865 struct nfs_fattr *fattr,
5866 struct nfs4_label *olabel)
5868 struct nfs4_exception exception = { };
5872 err = _nfs4_do_set_security_label(inode, ilabel,
5874 trace_nfs4_set_security_label(inode, err);
5875 err = nfs4_handle_exception(NFS_SERVER(inode), err,
5877 } while (exception.retry);
5882 nfs4_set_security_label(struct inode *inode, const void *buf, size_t buflen)
5884 struct nfs4_label ilabel, *olabel = NULL;
5885 struct nfs_fattr fattr;
5888 if (!nfs_server_capable(inode, NFS_CAP_SECURITY_LABEL))
5891 nfs_fattr_init(&fattr);
5895 ilabel.label = (char *)buf;
5896 ilabel.len = buflen;
5898 olabel = nfs4_label_alloc(NFS_SERVER(inode), GFP_KERNEL);
5899 if (IS_ERR(olabel)) {
5900 status = -PTR_ERR(olabel);
5904 status = nfs4_do_set_security_label(inode, &ilabel, &fattr, olabel);
5906 nfs_setsecurity(inode, &fattr, olabel);
5908 nfs4_label_free(olabel);
5912 #endif /* CONFIG_NFS_V4_SECURITY_LABEL */
5915 static void nfs4_init_boot_verifier(const struct nfs_client *clp,
5916 nfs4_verifier *bootverf)
5920 if (test_bit(NFS4CLNT_PURGE_STATE, &clp->cl_state)) {
5921 /* An impossible timestamp guarantees this value
5922 * will never match a generated boot time. */
5923 verf[0] = cpu_to_be32(U32_MAX);
5924 verf[1] = cpu_to_be32(U32_MAX);
5926 struct nfs_net *nn = net_generic(clp->cl_net, nfs_net_id);
5927 u64 ns = ktime_to_ns(nn->boot_time);
5929 verf[0] = cpu_to_be32(ns >> 32);
5930 verf[1] = cpu_to_be32(ns);
5932 memcpy(bootverf->data, verf, sizeof(bootverf->data));
5936 nfs4_init_nonuniform_client_string(struct nfs_client *clp)
5941 if (clp->cl_owner_id != NULL)
5946 strlen(clp->cl_rpcclient->cl_nodename) +
5948 strlen(rpc_peeraddr2str(clp->cl_rpcclient, RPC_DISPLAY_ADDR)) +
5951 if (nfs4_client_id_uniquifier[0] != '\0')
5952 len += strlen(nfs4_client_id_uniquifier) + 1;
5953 if (len > NFS4_OPAQUE_LIMIT + 1)
5957 * Since this string is allocated at mount time, and held until the
5958 * nfs_client is destroyed, we can use GFP_KERNEL here w/o worrying
5959 * about a memory-reclaim deadlock.
5961 str = kmalloc(len, GFP_KERNEL);
5966 if (nfs4_client_id_uniquifier[0] != '\0')
5967 scnprintf(str, len, "Linux NFSv4.0 %s/%s/%s",
5968 clp->cl_rpcclient->cl_nodename,
5969 nfs4_client_id_uniquifier,
5970 rpc_peeraddr2str(clp->cl_rpcclient,
5973 scnprintf(str, len, "Linux NFSv4.0 %s/%s",
5974 clp->cl_rpcclient->cl_nodename,
5975 rpc_peeraddr2str(clp->cl_rpcclient,
5979 clp->cl_owner_id = str;
5984 nfs4_init_uniquifier_client_string(struct nfs_client *clp)
5989 len = 10 + 10 + 1 + 10 + 1 +
5990 strlen(nfs4_client_id_uniquifier) + 1 +
5991 strlen(clp->cl_rpcclient->cl_nodename) + 1;
5993 if (len > NFS4_OPAQUE_LIMIT + 1)
5997 * Since this string is allocated at mount time, and held until the
5998 * nfs_client is destroyed, we can use GFP_KERNEL here w/o worrying
5999 * about a memory-reclaim deadlock.
6001 str = kmalloc(len, GFP_KERNEL);
6005 scnprintf(str, len, "Linux NFSv%u.%u %s/%s",
6006 clp->rpc_ops->version, clp->cl_minorversion,
6007 nfs4_client_id_uniquifier,
6008 clp->cl_rpcclient->cl_nodename);
6009 clp->cl_owner_id = str;
6014 nfs4_init_uniform_client_string(struct nfs_client *clp)
6019 if (clp->cl_owner_id != NULL)
6022 if (nfs4_client_id_uniquifier[0] != '\0')
6023 return nfs4_init_uniquifier_client_string(clp);
6025 len = 10 + 10 + 1 + 10 + 1 +
6026 strlen(clp->cl_rpcclient->cl_nodename) + 1;
6028 if (len > NFS4_OPAQUE_LIMIT + 1)
6032 * Since this string is allocated at mount time, and held until the
6033 * nfs_client is destroyed, we can use GFP_KERNEL here w/o worrying
6034 * about a memory-reclaim deadlock.
6036 str = kmalloc(len, GFP_KERNEL);
6040 scnprintf(str, len, "Linux NFSv%u.%u %s",
6041 clp->rpc_ops->version, clp->cl_minorversion,
6042 clp->cl_rpcclient->cl_nodename);
6043 clp->cl_owner_id = str;
6048 * nfs4_callback_up_net() starts only "tcp" and "tcp6" callback
6049 * services. Advertise one based on the address family of the
6053 nfs4_init_callback_netid(const struct nfs_client *clp, char *buf, size_t len)
6055 if (strchr(clp->cl_ipaddr, ':') != NULL)
6056 return scnprintf(buf, len, "tcp6");
6058 return scnprintf(buf, len, "tcp");
6061 static void nfs4_setclientid_done(struct rpc_task *task, void *calldata)
6063 struct nfs4_setclientid *sc = calldata;
6065 if (task->tk_status == 0)
6066 sc->sc_cred = get_rpccred(task->tk_rqstp->rq_cred);
6069 static const struct rpc_call_ops nfs4_setclientid_ops = {
6070 .rpc_call_done = nfs4_setclientid_done,
6074 * nfs4_proc_setclientid - Negotiate client ID
6075 * @clp: state data structure
6076 * @program: RPC program for NFSv4 callback service
6077 * @port: IP port number for NFS4 callback service
6078 * @cred: credential to use for this call
6079 * @res: where to place the result
6081 * Returns zero, a negative errno, or a negative NFS4ERR status code.
6083 int nfs4_proc_setclientid(struct nfs_client *clp, u32 program,
6084 unsigned short port, const struct cred *cred,
6085 struct nfs4_setclientid_res *res)
6087 nfs4_verifier sc_verifier;
6088 struct nfs4_setclientid setclientid = {
6089 .sc_verifier = &sc_verifier,
6093 struct rpc_message msg = {
6094 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID],
6095 .rpc_argp = &setclientid,
6099 struct rpc_task_setup task_setup_data = {
6100 .rpc_client = clp->cl_rpcclient,
6101 .rpc_message = &msg,
6102 .callback_ops = &nfs4_setclientid_ops,
6103 .callback_data = &setclientid,
6104 .flags = RPC_TASK_TIMEOUT | RPC_TASK_NO_ROUND_ROBIN,
6108 /* nfs_client_id4 */
6109 nfs4_init_boot_verifier(clp, &sc_verifier);
6111 if (test_bit(NFS_CS_MIGRATION, &clp->cl_flags))
6112 status = nfs4_init_uniform_client_string(clp);
6114 status = nfs4_init_nonuniform_client_string(clp);
6120 setclientid.sc_netid_len =
6121 nfs4_init_callback_netid(clp,
6122 setclientid.sc_netid,
6123 sizeof(setclientid.sc_netid));
6124 setclientid.sc_uaddr_len = scnprintf(setclientid.sc_uaddr,
6125 sizeof(setclientid.sc_uaddr), "%s.%u.%u",
6126 clp->cl_ipaddr, port >> 8, port & 255);
6128 dprintk("NFS call setclientid auth=%s, '%s'\n",
6129 clp->cl_rpcclient->cl_auth->au_ops->au_name,
6132 status = nfs4_call_sync_custom(&task_setup_data);
6133 if (setclientid.sc_cred) {
6134 kfree(clp->cl_acceptor);
6135 clp->cl_acceptor = rpcauth_stringify_acceptor(setclientid.sc_cred);
6136 put_rpccred(setclientid.sc_cred);
6139 trace_nfs4_setclientid(clp, status);
6140 dprintk("NFS reply setclientid: %d\n", status);
6145 * nfs4_proc_setclientid_confirm - Confirm client ID
6146 * @clp: state data structure
6147 * @arg: result of a previous SETCLIENTID
6148 * @cred: credential to use for this call
6150 * Returns zero, a negative errno, or a negative NFS4ERR status code.
6152 int nfs4_proc_setclientid_confirm(struct nfs_client *clp,
6153 struct nfs4_setclientid_res *arg,
6154 const struct cred *cred)
6156 struct rpc_message msg = {
6157 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID_CONFIRM],
6163 dprintk("NFS call setclientid_confirm auth=%s, (client ID %llx)\n",
6164 clp->cl_rpcclient->cl_auth->au_ops->au_name,
6166 status = rpc_call_sync(clp->cl_rpcclient, &msg,
6167 RPC_TASK_TIMEOUT | RPC_TASK_NO_ROUND_ROBIN);
6168 trace_nfs4_setclientid_confirm(clp, status);
6169 dprintk("NFS reply setclientid_confirm: %d\n", status);
6173 struct nfs4_delegreturndata {
6174 struct nfs4_delegreturnargs args;
6175 struct nfs4_delegreturnres res;
6177 nfs4_stateid stateid;
6178 unsigned long timestamp;
6180 struct nfs4_layoutreturn_args arg;
6181 struct nfs4_layoutreturn_res res;
6182 struct nfs4_xdr_opaque_data ld_private;
6186 struct nfs_fattr fattr;
6188 struct inode *inode;
6191 static void nfs4_delegreturn_done(struct rpc_task *task, void *calldata)
6193 struct nfs4_delegreturndata *data = calldata;
6194 struct nfs4_exception exception = {
6195 .inode = data->inode,
6196 .stateid = &data->stateid,
6199 if (!nfs4_sequence_done(task, &data->res.seq_res))
6202 trace_nfs4_delegreturn_exit(&data->args, &data->res, task->tk_status);
6204 /* Handle Layoutreturn errors */
6205 if (pnfs_roc_done(task, data->inode,
6206 &data->args.lr_args,
6208 &data->res.lr_ret) == -EAGAIN)
6211 switch (task->tk_status) {
6213 renew_lease(data->res.server, data->timestamp);
6215 case -NFS4ERR_ADMIN_REVOKED:
6216 case -NFS4ERR_DELEG_REVOKED:
6217 case -NFS4ERR_EXPIRED:
6218 nfs4_free_revoked_stateid(data->res.server,
6220 task->tk_msg.rpc_cred);
6222 case -NFS4ERR_BAD_STATEID:
6223 case -NFS4ERR_STALE_STATEID:
6224 task->tk_status = 0;
6226 case -NFS4ERR_OLD_STATEID:
6227 if (!nfs4_refresh_delegation_stateid(&data->stateid, data->inode))
6228 nfs4_stateid_seqid_inc(&data->stateid);
6229 if (data->args.bitmask) {
6230 data->args.bitmask = NULL;
6231 data->res.fattr = NULL;
6234 case -NFS4ERR_ACCESS:
6235 if (data->args.bitmask) {
6236 data->args.bitmask = NULL;
6237 data->res.fattr = NULL;
6242 task->tk_status = nfs4_async_handle_exception(task,
6243 data->res.server, task->tk_status,
6245 if (exception.retry)
6248 nfs_delegation_mark_returned(data->inode, data->args.stateid);
6249 data->rpc_status = task->tk_status;
6252 task->tk_status = 0;
6253 rpc_restart_call_prepare(task);
6256 static void nfs4_delegreturn_release(void *calldata)
6258 struct nfs4_delegreturndata *data = calldata;
6259 struct inode *inode = data->inode;
6263 pnfs_roc_release(&data->lr.arg, &data->lr.res,
6265 nfs_post_op_update_inode_force_wcc(inode, &data->fattr);
6266 nfs_iput_and_deactive(inode);
6271 static void nfs4_delegreturn_prepare(struct rpc_task *task, void *data)
6273 struct nfs4_delegreturndata *d_data;
6274 struct pnfs_layout_hdr *lo;
6276 d_data = (struct nfs4_delegreturndata *)data;
6278 if (!d_data->lr.roc && nfs4_wait_on_layoutreturn(d_data->inode, task)) {
6279 nfs4_sequence_done(task, &d_data->res.seq_res);
6283 lo = d_data->args.lr_args ? d_data->args.lr_args->layout : NULL;
6284 if (lo && !pnfs_layout_is_valid(lo)) {
6285 d_data->args.lr_args = NULL;
6286 d_data->res.lr_res = NULL;
6289 nfs4_setup_sequence(d_data->res.server->nfs_client,
6290 &d_data->args.seq_args,
6291 &d_data->res.seq_res,
6295 static const struct rpc_call_ops nfs4_delegreturn_ops = {
6296 .rpc_call_prepare = nfs4_delegreturn_prepare,
6297 .rpc_call_done = nfs4_delegreturn_done,
6298 .rpc_release = nfs4_delegreturn_release,
6301 static int _nfs4_proc_delegreturn(struct inode *inode, const struct cred *cred, const nfs4_stateid *stateid, int issync)
6303 struct nfs4_delegreturndata *data;
6304 struct nfs_server *server = NFS_SERVER(inode);
6305 struct rpc_task *task;
6306 struct rpc_message msg = {
6307 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DELEGRETURN],
6310 struct rpc_task_setup task_setup_data = {
6311 .rpc_client = server->client,
6312 .rpc_message = &msg,
6313 .callback_ops = &nfs4_delegreturn_ops,
6314 .flags = RPC_TASK_ASYNC,
6318 data = kzalloc(sizeof(*data), GFP_NOFS);
6321 nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 1, 0);
6323 nfs4_state_protect(server->nfs_client,
6324 NFS_SP4_MACH_CRED_CLEANUP,
6325 &task_setup_data.rpc_client, &msg);
6327 data->args.fhandle = &data->fh;
6328 data->args.stateid = &data->stateid;
6329 data->args.bitmask = server->cache_consistency_bitmask;
6330 nfs_copy_fh(&data->fh, NFS_FH(inode));
6331 nfs4_stateid_copy(&data->stateid, stateid);
6332 data->res.fattr = &data->fattr;
6333 data->res.server = server;
6334 data->res.lr_ret = -NFS4ERR_NOMATCHING_LAYOUT;
6335 data->lr.arg.ld_private = &data->lr.ld_private;
6336 nfs_fattr_init(data->res.fattr);
6337 data->timestamp = jiffies;
6338 data->rpc_status = 0;
6339 data->lr.roc = pnfs_roc(inode, &data->lr.arg, &data->lr.res, cred);
6340 data->inode = nfs_igrab_and_active(inode);
6343 data->args.lr_args = &data->lr.arg;
6344 data->res.lr_res = &data->lr.res;
6346 } else if (data->lr.roc) {
6347 pnfs_roc_release(&data->lr.arg, &data->lr.res, 0);
6348 data->lr.roc = false;
6351 task_setup_data.callback_data = data;
6352 msg.rpc_argp = &data->args;
6353 msg.rpc_resp = &data->res;
6354 task = rpc_run_task(&task_setup_data);
6356 return PTR_ERR(task);
6359 status = rpc_wait_for_completion_task(task);
6362 status = data->rpc_status;
6368 int nfs4_proc_delegreturn(struct inode *inode, const struct cred *cred, const nfs4_stateid *stateid, int issync)
6370 struct nfs_server *server = NFS_SERVER(inode);
6371 struct nfs4_exception exception = { };
6374 err = _nfs4_proc_delegreturn(inode, cred, stateid, issync);
6375 trace_nfs4_delegreturn(inode, stateid, err);
6377 case -NFS4ERR_STALE_STATEID:
6378 case -NFS4ERR_EXPIRED:
6382 err = nfs4_handle_exception(server, err, &exception);
6383 } while (exception.retry);
6387 static int _nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request)
6389 struct inode *inode = state->inode;
6390 struct nfs_server *server = NFS_SERVER(inode);
6391 struct nfs_client *clp = server->nfs_client;
6392 struct nfs_lockt_args arg = {
6393 .fh = NFS_FH(inode),
6396 struct nfs_lockt_res res = {
6399 struct rpc_message msg = {
6400 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKT],
6403 .rpc_cred = state->owner->so_cred,
6405 struct nfs4_lock_state *lsp;
6408 arg.lock_owner.clientid = clp->cl_clientid;
6409 status = nfs4_set_lock_state(state, request);
6412 lsp = request->fl_u.nfs4_fl.owner;
6413 arg.lock_owner.id = lsp->ls_seqid.owner_id;
6414 arg.lock_owner.s_dev = server->s_dev;
6415 status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1);
6418 request->fl_type = F_UNLCK;
6420 case -NFS4ERR_DENIED:
6423 request->fl_ops->fl_release_private(request);
6424 request->fl_ops = NULL;
6429 static int nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request)
6431 struct nfs4_exception exception = {
6432 .interruptible = true,
6437 err = _nfs4_proc_getlk(state, cmd, request);
6438 trace_nfs4_get_lock(request, state, cmd, err);
6439 err = nfs4_handle_exception(NFS_SERVER(state->inode), err,
6441 } while (exception.retry);
6446 * Update the seqid of a lock stateid after receiving
6447 * NFS4ERR_OLD_STATEID
6449 static bool nfs4_refresh_lock_old_stateid(nfs4_stateid *dst,
6450 struct nfs4_lock_state *lsp)
6452 struct nfs4_state *state = lsp->ls_state;
6455 spin_lock(&state->state_lock);
6456 if (!nfs4_stateid_match_other(dst, &lsp->ls_stateid))
6458 if (!nfs4_stateid_is_newer(&lsp->ls_stateid, dst))
6459 nfs4_stateid_seqid_inc(dst);
6461 dst->seqid = lsp->ls_stateid.seqid;
6464 spin_unlock(&state->state_lock);
6468 static bool nfs4_sync_lock_stateid(nfs4_stateid *dst,
6469 struct nfs4_lock_state *lsp)
6471 struct nfs4_state *state = lsp->ls_state;
6474 spin_lock(&state->state_lock);
6475 ret = !nfs4_stateid_match_other(dst, &lsp->ls_stateid);
6476 nfs4_stateid_copy(dst, &lsp->ls_stateid);
6477 spin_unlock(&state->state_lock);
6481 struct nfs4_unlockdata {
6482 struct nfs_locku_args arg;
6483 struct nfs_locku_res res;
6484 struct nfs4_lock_state *lsp;
6485 struct nfs_open_context *ctx;
6486 struct nfs_lock_context *l_ctx;
6487 struct file_lock fl;
6488 struct nfs_server *server;
6489 unsigned long timestamp;
6492 static struct nfs4_unlockdata *nfs4_alloc_unlockdata(struct file_lock *fl,
6493 struct nfs_open_context *ctx,
6494 struct nfs4_lock_state *lsp,
6495 struct nfs_seqid *seqid)
6497 struct nfs4_unlockdata *p;
6498 struct nfs4_state *state = lsp->ls_state;
6499 struct inode *inode = state->inode;
6501 p = kzalloc(sizeof(*p), GFP_NOFS);
6504 p->arg.fh = NFS_FH(inode);
6506 p->arg.seqid = seqid;
6507 p->res.seqid = seqid;
6509 /* Ensure we don't close file until we're done freeing locks! */
6510 p->ctx = get_nfs_open_context(ctx);
6511 p->l_ctx = nfs_get_lock_context(ctx);
6512 locks_init_lock(&p->fl);
6513 locks_copy_lock(&p->fl, fl);
6514 p->server = NFS_SERVER(inode);
6515 spin_lock(&state->state_lock);
6516 nfs4_stateid_copy(&p->arg.stateid, &lsp->ls_stateid);
6517 spin_unlock(&state->state_lock);
6521 static void nfs4_locku_release_calldata(void *data)
6523 struct nfs4_unlockdata *calldata = data;
6524 nfs_free_seqid(calldata->arg.seqid);
6525 nfs4_put_lock_state(calldata->lsp);
6526 nfs_put_lock_context(calldata->l_ctx);
6527 put_nfs_open_context(calldata->ctx);
6531 static void nfs4_locku_done(struct rpc_task *task, void *data)
6533 struct nfs4_unlockdata *calldata = data;
6534 struct nfs4_exception exception = {
6535 .inode = calldata->lsp->ls_state->inode,
6536 .stateid = &calldata->arg.stateid,
6539 if (!nfs4_sequence_done(task, &calldata->res.seq_res))
6541 switch (task->tk_status) {
6543 renew_lease(calldata->server, calldata->timestamp);
6544 locks_lock_inode_wait(calldata->lsp->ls_state->inode, &calldata->fl);
6545 if (nfs4_update_lock_stateid(calldata->lsp,
6546 &calldata->res.stateid))
6549 case -NFS4ERR_ADMIN_REVOKED:
6550 case -NFS4ERR_EXPIRED:
6551 nfs4_free_revoked_stateid(calldata->server,
6552 &calldata->arg.stateid,
6553 task->tk_msg.rpc_cred);
6555 case -NFS4ERR_BAD_STATEID:
6556 case -NFS4ERR_STALE_STATEID:
6557 if (nfs4_sync_lock_stateid(&calldata->arg.stateid,
6559 rpc_restart_call_prepare(task);
6561 case -NFS4ERR_OLD_STATEID:
6562 if (nfs4_refresh_lock_old_stateid(&calldata->arg.stateid,
6564 rpc_restart_call_prepare(task);
6567 task->tk_status = nfs4_async_handle_exception(task,
6568 calldata->server, task->tk_status,
6570 if (exception.retry)
6571 rpc_restart_call_prepare(task);
6573 nfs_release_seqid(calldata->arg.seqid);
6576 static void nfs4_locku_prepare(struct rpc_task *task, void *data)
6578 struct nfs4_unlockdata *calldata = data;
6580 if (test_bit(NFS_CONTEXT_UNLOCK, &calldata->l_ctx->open_context->flags) &&
6581 nfs_async_iocounter_wait(task, calldata->l_ctx))
6584 if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0)
6586 if (test_bit(NFS_LOCK_INITIALIZED, &calldata->lsp->ls_flags) == 0) {
6587 /* Note: exit _without_ running nfs4_locku_done */
6590 calldata->timestamp = jiffies;
6591 if (nfs4_setup_sequence(calldata->server->nfs_client,
6592 &calldata->arg.seq_args,
6593 &calldata->res.seq_res,
6595 nfs_release_seqid(calldata->arg.seqid);
6598 task->tk_action = NULL;
6600 nfs4_sequence_done(task, &calldata->res.seq_res);
6603 static const struct rpc_call_ops nfs4_locku_ops = {
6604 .rpc_call_prepare = nfs4_locku_prepare,
6605 .rpc_call_done = nfs4_locku_done,
6606 .rpc_release = nfs4_locku_release_calldata,
6609 static struct rpc_task *nfs4_do_unlck(struct file_lock *fl,
6610 struct nfs_open_context *ctx,
6611 struct nfs4_lock_state *lsp,
6612 struct nfs_seqid *seqid)
6614 struct nfs4_unlockdata *data;
6615 struct rpc_message msg = {
6616 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKU],
6617 .rpc_cred = ctx->cred,
6619 struct rpc_task_setup task_setup_data = {
6620 .rpc_client = NFS_CLIENT(lsp->ls_state->inode),
6621 .rpc_message = &msg,
6622 .callback_ops = &nfs4_locku_ops,
6623 .workqueue = nfsiod_workqueue,
6624 .flags = RPC_TASK_ASYNC,
6627 nfs4_state_protect(NFS_SERVER(lsp->ls_state->inode)->nfs_client,
6628 NFS_SP4_MACH_CRED_CLEANUP, &task_setup_data.rpc_client, &msg);
6630 /* Ensure this is an unlock - when canceling a lock, the
6631 * canceled lock is passed in, and it won't be an unlock.
6633 fl->fl_type = F_UNLCK;
6634 if (fl->fl_flags & FL_CLOSE)
6635 set_bit(NFS_CONTEXT_UNLOCK, &ctx->flags);
6637 data = nfs4_alloc_unlockdata(fl, ctx, lsp, seqid);
6639 nfs_free_seqid(seqid);
6640 return ERR_PTR(-ENOMEM);
6643 nfs4_init_sequence(&data->arg.seq_args, &data->res.seq_res, 1, 0);
6644 msg.rpc_argp = &data->arg;
6645 msg.rpc_resp = &data->res;
6646 task_setup_data.callback_data = data;
6647 return rpc_run_task(&task_setup_data);
6650 static int nfs4_proc_unlck(struct nfs4_state *state, int cmd, struct file_lock *request)
6652 struct inode *inode = state->inode;
6653 struct nfs4_state_owner *sp = state->owner;
6654 struct nfs_inode *nfsi = NFS_I(inode);
6655 struct nfs_seqid *seqid;
6656 struct nfs4_lock_state *lsp;
6657 struct rpc_task *task;
6658 struct nfs_seqid *(*alloc_seqid)(struct nfs_seqid_counter *, gfp_t);
6660 unsigned char fl_flags = request->fl_flags;
6662 status = nfs4_set_lock_state(state, request);
6663 /* Unlock _before_ we do the RPC call */
6664 request->fl_flags |= FL_EXISTS;
6665 /* Exclude nfs_delegation_claim_locks() */
6666 mutex_lock(&sp->so_delegreturn_mutex);
6667 /* Exclude nfs4_reclaim_open_stateid() - note nesting! */
6668 down_read(&nfsi->rwsem);
6669 if (locks_lock_inode_wait(inode, request) == -ENOENT) {
6670 up_read(&nfsi->rwsem);
6671 mutex_unlock(&sp->so_delegreturn_mutex);
6674 up_read(&nfsi->rwsem);
6675 mutex_unlock(&sp->so_delegreturn_mutex);
6678 /* Is this a delegated lock? */
6679 lsp = request->fl_u.nfs4_fl.owner;
6680 if (test_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags) == 0)
6682 alloc_seqid = NFS_SERVER(inode)->nfs_client->cl_mvops->alloc_seqid;
6683 seqid = alloc_seqid(&lsp->ls_seqid, GFP_KERNEL);
6687 task = nfs4_do_unlck(request, nfs_file_open_context(request->fl_file), lsp, seqid);
6688 status = PTR_ERR(task);
6691 status = rpc_wait_for_completion_task(task);
6694 request->fl_flags = fl_flags;
6695 trace_nfs4_unlock(request, state, F_SETLK, status);
6699 struct nfs4_lockdata {
6700 struct nfs_lock_args arg;
6701 struct nfs_lock_res res;
6702 struct nfs4_lock_state *lsp;
6703 struct nfs_open_context *ctx;
6704 struct file_lock fl;
6705 unsigned long timestamp;
6708 struct nfs_server *server;
6711 static struct nfs4_lockdata *nfs4_alloc_lockdata(struct file_lock *fl,
6712 struct nfs_open_context *ctx, struct nfs4_lock_state *lsp,
6715 struct nfs4_lockdata *p;
6716 struct inode *inode = lsp->ls_state->inode;
6717 struct nfs_server *server = NFS_SERVER(inode);
6718 struct nfs_seqid *(*alloc_seqid)(struct nfs_seqid_counter *, gfp_t);
6720 p = kzalloc(sizeof(*p), gfp_mask);
6724 p->arg.fh = NFS_FH(inode);
6726 p->arg.open_seqid = nfs_alloc_seqid(&lsp->ls_state->owner->so_seqid, gfp_mask);
6727 if (IS_ERR(p->arg.open_seqid))
6729 alloc_seqid = server->nfs_client->cl_mvops->alloc_seqid;
6730 p->arg.lock_seqid = alloc_seqid(&lsp->ls_seqid, gfp_mask);
6731 if (IS_ERR(p->arg.lock_seqid))
6732 goto out_free_seqid;
6733 p->arg.lock_owner.clientid = server->nfs_client->cl_clientid;
6734 p->arg.lock_owner.id = lsp->ls_seqid.owner_id;
6735 p->arg.lock_owner.s_dev = server->s_dev;
6736 p->res.lock_seqid = p->arg.lock_seqid;
6739 p->ctx = get_nfs_open_context(ctx);
6740 locks_init_lock(&p->fl);
6741 locks_copy_lock(&p->fl, fl);
6744 nfs_free_seqid(p->arg.open_seqid);
6750 static void nfs4_lock_prepare(struct rpc_task *task, void *calldata)
6752 struct nfs4_lockdata *data = calldata;
6753 struct nfs4_state *state = data->lsp->ls_state;
6755 dprintk("%s: begin!\n", __func__);
6756 if (nfs_wait_on_sequence(data->arg.lock_seqid, task) != 0)
6758 /* Do we need to do an open_to_lock_owner? */
6759 if (!test_bit(NFS_LOCK_INITIALIZED, &data->lsp->ls_flags)) {
6760 if (nfs_wait_on_sequence(data->arg.open_seqid, task) != 0) {
6761 goto out_release_lock_seqid;
6763 nfs4_stateid_copy(&data->arg.open_stateid,
6764 &state->open_stateid);
6765 data->arg.new_lock_owner = 1;
6766 data->res.open_seqid = data->arg.open_seqid;
6768 data->arg.new_lock_owner = 0;
6769 nfs4_stateid_copy(&data->arg.lock_stateid,
6770 &data->lsp->ls_stateid);
6772 if (!nfs4_valid_open_stateid(state)) {
6773 data->rpc_status = -EBADF;
6774 task->tk_action = NULL;
6775 goto out_release_open_seqid;
6777 data->timestamp = jiffies;
6778 if (nfs4_setup_sequence(data->server->nfs_client,
6779 &data->arg.seq_args,
6783 out_release_open_seqid:
6784 nfs_release_seqid(data->arg.open_seqid);
6785 out_release_lock_seqid:
6786 nfs_release_seqid(data->arg.lock_seqid);
6788 nfs4_sequence_done(task, &data->res.seq_res);
6789 dprintk("%s: done!, ret = %d\n", __func__, data->rpc_status);
6792 static void nfs4_lock_done(struct rpc_task *task, void *calldata)
6794 struct nfs4_lockdata *data = calldata;
6795 struct nfs4_lock_state *lsp = data->lsp;
6797 dprintk("%s: begin!\n", __func__);
6799 if (!nfs4_sequence_done(task, &data->res.seq_res))
6802 data->rpc_status = task->tk_status;
6803 switch (task->tk_status) {
6805 renew_lease(NFS_SERVER(d_inode(data->ctx->dentry)),
6807 if (data->arg.new_lock && !data->cancelled) {
6808 data->fl.fl_flags &= ~(FL_SLEEP | FL_ACCESS);
6809 if (locks_lock_inode_wait(lsp->ls_state->inode, &data->fl) < 0)
6812 if (data->arg.new_lock_owner != 0) {
6813 nfs_confirm_seqid(&lsp->ls_seqid, 0);
6814 nfs4_stateid_copy(&lsp->ls_stateid, &data->res.stateid);
6815 set_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags);
6816 } else if (!nfs4_update_lock_stateid(lsp, &data->res.stateid))
6819 case -NFS4ERR_BAD_STATEID:
6820 case -NFS4ERR_OLD_STATEID:
6821 case -NFS4ERR_STALE_STATEID:
6822 case -NFS4ERR_EXPIRED:
6823 if (data->arg.new_lock_owner != 0) {
6824 if (!nfs4_stateid_match(&data->arg.open_stateid,
6825 &lsp->ls_state->open_stateid))
6827 } else if (!nfs4_stateid_match(&data->arg.lock_stateid,
6832 dprintk("%s: done, ret = %d!\n", __func__, data->rpc_status);
6835 if (!data->cancelled)
6836 rpc_restart_call_prepare(task);
6840 static void nfs4_lock_release(void *calldata)
6842 struct nfs4_lockdata *data = calldata;
6844 dprintk("%s: begin!\n", __func__);
6845 nfs_free_seqid(data->arg.open_seqid);
6846 if (data->cancelled && data->rpc_status == 0) {
6847 struct rpc_task *task;
6848 task = nfs4_do_unlck(&data->fl, data->ctx, data->lsp,
6849 data->arg.lock_seqid);
6851 rpc_put_task_async(task);
6852 dprintk("%s: cancelling lock!\n", __func__);
6854 nfs_free_seqid(data->arg.lock_seqid);
6855 nfs4_put_lock_state(data->lsp);
6856 put_nfs_open_context(data->ctx);
6858 dprintk("%s: done!\n", __func__);
6861 static const struct rpc_call_ops nfs4_lock_ops = {
6862 .rpc_call_prepare = nfs4_lock_prepare,
6863 .rpc_call_done = nfs4_lock_done,
6864 .rpc_release = nfs4_lock_release,
6867 static void nfs4_handle_setlk_error(struct nfs_server *server, struct nfs4_lock_state *lsp, int new_lock_owner, int error)
6870 case -NFS4ERR_ADMIN_REVOKED:
6871 case -NFS4ERR_EXPIRED:
6872 case -NFS4ERR_BAD_STATEID:
6873 lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED;
6874 if (new_lock_owner != 0 ||
6875 test_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags) != 0)
6876 nfs4_schedule_stateid_recovery(server, lsp->ls_state);
6878 case -NFS4ERR_STALE_STATEID:
6879 lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED;
6880 nfs4_schedule_lease_recovery(server->nfs_client);
6884 static int _nfs4_do_setlk(struct nfs4_state *state, int cmd, struct file_lock *fl, int recovery_type)
6886 struct nfs4_lockdata *data;
6887 struct rpc_task *task;
6888 struct rpc_message msg = {
6889 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCK],
6890 .rpc_cred = state->owner->so_cred,
6892 struct rpc_task_setup task_setup_data = {
6893 .rpc_client = NFS_CLIENT(state->inode),
6894 .rpc_message = &msg,
6895 .callback_ops = &nfs4_lock_ops,
6896 .workqueue = nfsiod_workqueue,
6897 .flags = RPC_TASK_ASYNC,
6901 dprintk("%s: begin!\n", __func__);
6902 data = nfs4_alloc_lockdata(fl, nfs_file_open_context(fl->fl_file),
6903 fl->fl_u.nfs4_fl.owner,
6904 recovery_type == NFS_LOCK_NEW ? GFP_KERNEL : GFP_NOFS);
6908 data->arg.block = 1;
6909 nfs4_init_sequence(&data->arg.seq_args, &data->res.seq_res, 1,
6910 recovery_type > NFS_LOCK_NEW);
6911 msg.rpc_argp = &data->arg;
6912 msg.rpc_resp = &data->res;
6913 task_setup_data.callback_data = data;
6914 if (recovery_type > NFS_LOCK_NEW) {
6915 if (recovery_type == NFS_LOCK_RECLAIM)
6916 data->arg.reclaim = NFS_LOCK_RECLAIM;
6918 data->arg.new_lock = 1;
6919 task = rpc_run_task(&task_setup_data);
6921 return PTR_ERR(task);
6922 ret = rpc_wait_for_completion_task(task);
6924 ret = data->rpc_status;
6926 nfs4_handle_setlk_error(data->server, data->lsp,
6927 data->arg.new_lock_owner, ret);
6929 data->cancelled = true;
6931 dprintk("%s: done, ret = %d!\n", __func__, ret);
6932 trace_nfs4_set_lock(fl, state, &data->res.stateid, cmd, ret);
6936 static int nfs4_lock_reclaim(struct nfs4_state *state, struct file_lock *request)
6938 struct nfs_server *server = NFS_SERVER(state->inode);
6939 struct nfs4_exception exception = {
6940 .inode = state->inode,
6945 /* Cache the lock if possible... */
6946 if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0)
6948 err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_RECLAIM);
6949 if (err != -NFS4ERR_DELAY)
6951 nfs4_handle_exception(server, err, &exception);
6952 } while (exception.retry);
6956 static int nfs4_lock_expired(struct nfs4_state *state, struct file_lock *request)
6958 struct nfs_server *server = NFS_SERVER(state->inode);
6959 struct nfs4_exception exception = {
6960 .inode = state->inode,
6964 err = nfs4_set_lock_state(state, request);
6967 if (!recover_lost_locks) {
6968 set_bit(NFS_LOCK_LOST, &request->fl_u.nfs4_fl.owner->ls_flags);
6972 if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0)
6974 err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_EXPIRED);
6978 case -NFS4ERR_GRACE:
6979 case -NFS4ERR_DELAY:
6980 nfs4_handle_exception(server, err, &exception);
6983 } while (exception.retry);
6988 #if defined(CONFIG_NFS_V4_1)
6989 static int nfs41_lock_expired(struct nfs4_state *state, struct file_lock *request)
6991 struct nfs4_lock_state *lsp;
6994 status = nfs4_set_lock_state(state, request);
6997 lsp = request->fl_u.nfs4_fl.owner;
6998 if (test_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags) ||
6999 test_bit(NFS_LOCK_LOST, &lsp->ls_flags))
7001 return nfs4_lock_expired(state, request);
7005 static int _nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request)
7007 struct nfs_inode *nfsi = NFS_I(state->inode);
7008 struct nfs4_state_owner *sp = state->owner;
7009 unsigned char fl_flags = request->fl_flags;
7012 request->fl_flags |= FL_ACCESS;
7013 status = locks_lock_inode_wait(state->inode, request);
7016 mutex_lock(&sp->so_delegreturn_mutex);
7017 down_read(&nfsi->rwsem);
7018 if (test_bit(NFS_DELEGATED_STATE, &state->flags)) {
7019 /* Yes: cache locks! */
7020 /* ...but avoid races with delegation recall... */
7021 request->fl_flags = fl_flags & ~FL_SLEEP;
7022 status = locks_lock_inode_wait(state->inode, request);
7023 up_read(&nfsi->rwsem);
7024 mutex_unlock(&sp->so_delegreturn_mutex);
7027 up_read(&nfsi->rwsem);
7028 mutex_unlock(&sp->so_delegreturn_mutex);
7029 status = _nfs4_do_setlk(state, cmd, request, NFS_LOCK_NEW);
7031 request->fl_flags = fl_flags;
7035 static int nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request)
7037 struct nfs4_exception exception = {
7039 .inode = state->inode,
7040 .interruptible = true,
7045 err = _nfs4_proc_setlk(state, cmd, request);
7046 if (err == -NFS4ERR_DENIED)
7048 err = nfs4_handle_exception(NFS_SERVER(state->inode),
7050 } while (exception.retry);
7054 #define NFS4_LOCK_MINTIMEOUT (1 * HZ)
7055 #define NFS4_LOCK_MAXTIMEOUT (30 * HZ)
7058 nfs4_retry_setlk_simple(struct nfs4_state *state, int cmd,
7059 struct file_lock *request)
7061 int status = -ERESTARTSYS;
7062 unsigned long timeout = NFS4_LOCK_MINTIMEOUT;
7064 while(!signalled()) {
7065 status = nfs4_proc_setlk(state, cmd, request);
7066 if ((status != -EAGAIN) || IS_SETLK(cmd))
7068 freezable_schedule_timeout_interruptible(timeout);
7070 timeout = min_t(unsigned long, NFS4_LOCK_MAXTIMEOUT, timeout);
7071 status = -ERESTARTSYS;
7076 #ifdef CONFIG_NFS_V4_1
7077 struct nfs4_lock_waiter {
7078 struct task_struct *task;
7079 struct inode *inode;
7080 struct nfs_lowner *owner;
7084 nfs4_wake_lock_waiter(wait_queue_entry_t *wait, unsigned int mode, int flags, void *key)
7087 struct nfs4_lock_waiter *waiter = wait->private;
7089 /* NULL key means to wake up everyone */
7091 struct cb_notify_lock_args *cbnl = key;
7092 struct nfs_lowner *lowner = &cbnl->cbnl_owner,
7093 *wowner = waiter->owner;
7095 /* Only wake if the callback was for the same owner. */
7096 if (lowner->id != wowner->id || lowner->s_dev != wowner->s_dev)
7099 /* Make sure it's for the right inode */
7100 if (nfs_compare_fh(NFS_FH(waiter->inode), &cbnl->cbnl_fh))
7104 /* override "private" so we can use default_wake_function */
7105 wait->private = waiter->task;
7106 ret = woken_wake_function(wait, mode, flags, key);
7108 list_del_init(&wait->entry);
7109 wait->private = waiter;
7114 nfs4_retry_setlk(struct nfs4_state *state, int cmd, struct file_lock *request)
7116 int status = -ERESTARTSYS;
7117 struct nfs4_lock_state *lsp = request->fl_u.nfs4_fl.owner;
7118 struct nfs_server *server = NFS_SERVER(state->inode);
7119 struct nfs_client *clp = server->nfs_client;
7120 wait_queue_head_t *q = &clp->cl_lock_waitq;
7121 struct nfs_lowner owner = { .clientid = clp->cl_clientid,
7122 .id = lsp->ls_seqid.owner_id,
7123 .s_dev = server->s_dev };
7124 struct nfs4_lock_waiter waiter = { .task = current,
7125 .inode = state->inode,
7127 wait_queue_entry_t wait;
7129 /* Don't bother with waitqueue if we don't expect a callback */
7130 if (!test_bit(NFS_STATE_MAY_NOTIFY_LOCK, &state->flags))
7131 return nfs4_retry_setlk_simple(state, cmd, request);
7134 wait.private = &waiter;
7135 wait.func = nfs4_wake_lock_waiter;
7137 while(!signalled()) {
7138 add_wait_queue(q, &wait);
7139 status = nfs4_proc_setlk(state, cmd, request);
7140 if ((status != -EAGAIN) || IS_SETLK(cmd)) {
7141 finish_wait(q, &wait);
7145 status = -ERESTARTSYS;
7146 freezer_do_not_count();
7147 wait_woken(&wait, TASK_INTERRUPTIBLE, NFS4_LOCK_MAXTIMEOUT);
7149 finish_wait(q, &wait);
7154 #else /* !CONFIG_NFS_V4_1 */
7156 nfs4_retry_setlk(struct nfs4_state *state, int cmd, struct file_lock *request)
7158 return nfs4_retry_setlk_simple(state, cmd, request);
7163 nfs4_proc_lock(struct file *filp, int cmd, struct file_lock *request)
7165 struct nfs_open_context *ctx;
7166 struct nfs4_state *state;
7169 /* verify open state */
7170 ctx = nfs_file_open_context(filp);
7173 if (IS_GETLK(cmd)) {
7175 return nfs4_proc_getlk(state, F_GETLK, request);
7179 if (!(IS_SETLK(cmd) || IS_SETLKW(cmd)))
7182 if (request->fl_type == F_UNLCK) {
7184 return nfs4_proc_unlck(state, cmd, request);
7191 if ((request->fl_flags & FL_POSIX) &&
7192 !test_bit(NFS_STATE_POSIX_LOCKS, &state->flags))
7196 * Don't rely on the VFS having checked the file open mode,
7197 * since it won't do this for flock() locks.
7199 switch (request->fl_type) {
7201 if (!(filp->f_mode & FMODE_READ))
7205 if (!(filp->f_mode & FMODE_WRITE))
7209 status = nfs4_set_lock_state(state, request);
7213 return nfs4_retry_setlk(state, cmd, request);
7216 int nfs4_lock_delegation_recall(struct file_lock *fl, struct nfs4_state *state, const nfs4_stateid *stateid)
7218 struct nfs_server *server = NFS_SERVER(state->inode);
7221 err = nfs4_set_lock_state(state, fl);
7224 err = _nfs4_do_setlk(state, F_SETLK, fl, NFS_LOCK_NEW);
7225 return nfs4_handle_delegation_recall_error(server, state, stateid, fl, err);
7228 struct nfs_release_lockowner_data {
7229 struct nfs4_lock_state *lsp;
7230 struct nfs_server *server;
7231 struct nfs_release_lockowner_args args;
7232 struct nfs_release_lockowner_res res;
7233 unsigned long timestamp;
7236 static void nfs4_release_lockowner_prepare(struct rpc_task *task, void *calldata)
7238 struct nfs_release_lockowner_data *data = calldata;
7239 struct nfs_server *server = data->server;
7240 nfs4_setup_sequence(server->nfs_client, &data->args.seq_args,
7241 &data->res.seq_res, task);
7242 data->args.lock_owner.clientid = server->nfs_client->cl_clientid;
7243 data->timestamp = jiffies;
7246 static void nfs4_release_lockowner_done(struct rpc_task *task, void *calldata)
7248 struct nfs_release_lockowner_data *data = calldata;
7249 struct nfs_server *server = data->server;
7251 nfs40_sequence_done(task, &data->res.seq_res);
7253 switch (task->tk_status) {
7255 renew_lease(server, data->timestamp);
7257 case -NFS4ERR_STALE_CLIENTID:
7258 case -NFS4ERR_EXPIRED:
7259 nfs4_schedule_lease_recovery(server->nfs_client);
7261 case -NFS4ERR_LEASE_MOVED:
7262 case -NFS4ERR_DELAY:
7263 if (nfs4_async_handle_error(task, server,
7264 NULL, NULL) == -EAGAIN)
7265 rpc_restart_call_prepare(task);
7269 static void nfs4_release_lockowner_release(void *calldata)
7271 struct nfs_release_lockowner_data *data = calldata;
7272 nfs4_free_lock_state(data->server, data->lsp);
7276 static const struct rpc_call_ops nfs4_release_lockowner_ops = {
7277 .rpc_call_prepare = nfs4_release_lockowner_prepare,
7278 .rpc_call_done = nfs4_release_lockowner_done,
7279 .rpc_release = nfs4_release_lockowner_release,
7283 nfs4_release_lockowner(struct nfs_server *server, struct nfs4_lock_state *lsp)
7285 struct nfs_release_lockowner_data *data;
7286 struct rpc_message msg = {
7287 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RELEASE_LOCKOWNER],
7290 if (server->nfs_client->cl_mvops->minor_version != 0)
7293 data = kmalloc(sizeof(*data), GFP_NOFS);
7297 data->server = server;
7298 data->args.lock_owner.clientid = server->nfs_client->cl_clientid;
7299 data->args.lock_owner.id = lsp->ls_seqid.owner_id;
7300 data->args.lock_owner.s_dev = server->s_dev;
7302 msg.rpc_argp = &data->args;
7303 msg.rpc_resp = &data->res;
7304 nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 0, 0);
7305 rpc_call_async(server->client, &msg, 0, &nfs4_release_lockowner_ops, data);
7308 #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl"
7310 static int nfs4_xattr_set_nfs4_acl(const struct xattr_handler *handler,
7311 struct dentry *unused, struct inode *inode,
7312 const char *key, const void *buf,
7313 size_t buflen, int flags)
7315 return nfs4_proc_set_acl(inode, buf, buflen);
7318 static int nfs4_xattr_get_nfs4_acl(const struct xattr_handler *handler,
7319 struct dentry *unused, struct inode *inode,
7320 const char *key, void *buf, size_t buflen)
7322 return nfs4_proc_get_acl(inode, buf, buflen);
7325 static bool nfs4_xattr_list_nfs4_acl(struct dentry *dentry)
7327 return nfs4_server_supports_acls(NFS_SERVER(d_inode(dentry)));
7330 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
7332 static int nfs4_xattr_set_nfs4_label(const struct xattr_handler *handler,
7333 struct dentry *unused, struct inode *inode,
7334 const char *key, const void *buf,
7335 size_t buflen, int flags)
7337 if (security_ismaclabel(key))
7338 return nfs4_set_security_label(inode, buf, buflen);
7343 static int nfs4_xattr_get_nfs4_label(const struct xattr_handler *handler,
7344 struct dentry *unused, struct inode *inode,
7345 const char *key, void *buf, size_t buflen)
7347 if (security_ismaclabel(key))
7348 return nfs4_get_security_label(inode, buf, buflen);
7353 nfs4_listxattr_nfs4_label(struct inode *inode, char *list, size_t list_len)
7357 if (nfs_server_capable(inode, NFS_CAP_SECURITY_LABEL)) {
7358 len = security_inode_listsecurity(inode, list, list_len);
7359 if (list_len && len > list_len)
7365 static const struct xattr_handler nfs4_xattr_nfs4_label_handler = {
7366 .prefix = XATTR_SECURITY_PREFIX,
7367 .get = nfs4_xattr_get_nfs4_label,
7368 .set = nfs4_xattr_set_nfs4_label,
7374 nfs4_listxattr_nfs4_label(struct inode *inode, char *list, size_t list_len)
7382 * nfs_fhget will use either the mounted_on_fileid or the fileid
7384 static void nfs_fixup_referral_attributes(struct nfs_fattr *fattr)
7386 if (!(((fattr->valid & NFS_ATTR_FATTR_MOUNTED_ON_FILEID) ||
7387 (fattr->valid & NFS_ATTR_FATTR_FILEID)) &&
7388 (fattr->valid & NFS_ATTR_FATTR_FSID) &&
7389 (fattr->valid & NFS_ATTR_FATTR_V4_LOCATIONS)))
7392 fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE |
7393 NFS_ATTR_FATTR_NLINK | NFS_ATTR_FATTR_V4_REFERRAL;
7394 fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO;
7398 static int _nfs4_proc_fs_locations(struct rpc_clnt *client, struct inode *dir,
7399 const struct qstr *name,
7400 struct nfs4_fs_locations *fs_locations,
7403 struct nfs_server *server = NFS_SERVER(dir);
7405 struct nfs4_fs_locations_arg args = {
7406 .dir_fh = NFS_FH(dir),
7411 struct nfs4_fs_locations_res res = {
7412 .fs_locations = fs_locations,
7414 struct rpc_message msg = {
7415 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FS_LOCATIONS],
7421 dprintk("%s: start\n", __func__);
7423 bitmask[0] = nfs4_fattr_bitmap[0] | FATTR4_WORD0_FS_LOCATIONS;
7424 bitmask[1] = nfs4_fattr_bitmap[1];
7426 /* Ask for the fileid of the absent filesystem if mounted_on_fileid
7427 * is not supported */
7428 if (NFS_SERVER(dir)->attr_bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID)
7429 bitmask[0] &= ~FATTR4_WORD0_FILEID;
7431 bitmask[1] &= ~FATTR4_WORD1_MOUNTED_ON_FILEID;
7433 nfs_fattr_init(&fs_locations->fattr);
7434 fs_locations->server = server;
7435 fs_locations->nlocations = 0;
7436 status = nfs4_call_sync(client, server, &msg, &args.seq_args, &res.seq_res, 0);
7437 dprintk("%s: returned status = %d\n", __func__, status);
7441 int nfs4_proc_fs_locations(struct rpc_clnt *client, struct inode *dir,
7442 const struct qstr *name,
7443 struct nfs4_fs_locations *fs_locations,
7446 struct nfs4_exception exception = {
7447 .interruptible = true,
7451 err = _nfs4_proc_fs_locations(client, dir, name,
7452 fs_locations, page);
7453 trace_nfs4_get_fs_locations(dir, name, err);
7454 err = nfs4_handle_exception(NFS_SERVER(dir), err,
7456 } while (exception.retry);
7461 * This operation also signals the server that this client is
7462 * performing migration recovery. The server can stop returning
7463 * NFS4ERR_LEASE_MOVED to this client. A RENEW operation is
7464 * appended to this compound to identify the client ID which is
7465 * performing recovery.
7467 static int _nfs40_proc_get_locations(struct inode *inode,
7468 struct nfs4_fs_locations *locations,
7469 struct page *page, const struct cred *cred)
7471 struct nfs_server *server = NFS_SERVER(inode);
7472 struct rpc_clnt *clnt = server->client;
7474 [0] = FATTR4_WORD0_FSID | FATTR4_WORD0_FS_LOCATIONS,
7476 struct nfs4_fs_locations_arg args = {
7477 .clientid = server->nfs_client->cl_clientid,
7478 .fh = NFS_FH(inode),
7481 .migration = 1, /* skip LOOKUP */
7482 .renew = 1, /* append RENEW */
7484 struct nfs4_fs_locations_res res = {
7485 .fs_locations = locations,
7489 struct rpc_message msg = {
7490 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FS_LOCATIONS],
7495 unsigned long now = jiffies;
7498 nfs_fattr_init(&locations->fattr);
7499 locations->server = server;
7500 locations->nlocations = 0;
7502 nfs4_init_sequence(&args.seq_args, &res.seq_res, 0, 1);
7503 status = nfs4_call_sync_sequence(clnt, server, &msg,
7504 &args.seq_args, &res.seq_res);
7508 renew_lease(server, now);
7512 #ifdef CONFIG_NFS_V4_1
7515 * This operation also signals the server that this client is
7516 * performing migration recovery. The server can stop asserting
7517 * SEQ4_STATUS_LEASE_MOVED for this client. The client ID
7518 * performing this operation is identified in the SEQUENCE
7519 * operation in this compound.
7521 * When the client supports GETATTR(fs_locations_info), it can
7522 * be plumbed in here.
7524 static int _nfs41_proc_get_locations(struct inode *inode,
7525 struct nfs4_fs_locations *locations,
7526 struct page *page, const struct cred *cred)
7528 struct nfs_server *server = NFS_SERVER(inode);
7529 struct rpc_clnt *clnt = server->client;
7531 [0] = FATTR4_WORD0_FSID | FATTR4_WORD0_FS_LOCATIONS,
7533 struct nfs4_fs_locations_arg args = {
7534 .fh = NFS_FH(inode),
7537 .migration = 1, /* skip LOOKUP */
7539 struct nfs4_fs_locations_res res = {
7540 .fs_locations = locations,
7543 struct rpc_message msg = {
7544 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FS_LOCATIONS],
7551 nfs_fattr_init(&locations->fattr);
7552 locations->server = server;
7553 locations->nlocations = 0;
7555 nfs4_init_sequence(&args.seq_args, &res.seq_res, 0, 1);
7556 status = nfs4_call_sync_sequence(clnt, server, &msg,
7557 &args.seq_args, &res.seq_res);
7558 if (status == NFS4_OK &&
7559 res.seq_res.sr_status_flags & SEQ4_STATUS_LEASE_MOVED)
7560 status = -NFS4ERR_LEASE_MOVED;
7564 #endif /* CONFIG_NFS_V4_1 */
7567 * nfs4_proc_get_locations - discover locations for a migrated FSID
7568 * @inode: inode on FSID that is migrating
7569 * @locations: result of query
7571 * @cred: credential to use for this operation
7573 * Returns NFS4_OK on success, a negative NFS4ERR status code if the
7574 * operation failed, or a negative errno if a local error occurred.
7576 * On success, "locations" is filled in, but if the server has
7577 * no locations information, NFS_ATTR_FATTR_V4_LOCATIONS is not
7580 * -NFS4ERR_LEASE_MOVED is returned if the server still has leases
7581 * from this client that require migration recovery.
7583 int nfs4_proc_get_locations(struct inode *inode,
7584 struct nfs4_fs_locations *locations,
7585 struct page *page, const struct cred *cred)
7587 struct nfs_server *server = NFS_SERVER(inode);
7588 struct nfs_client *clp = server->nfs_client;
7589 const struct nfs4_mig_recovery_ops *ops =
7590 clp->cl_mvops->mig_recovery_ops;
7591 struct nfs4_exception exception = {
7592 .interruptible = true,
7596 dprintk("%s: FSID %llx:%llx on \"%s\"\n", __func__,
7597 (unsigned long long)server->fsid.major,
7598 (unsigned long long)server->fsid.minor,
7600 nfs_display_fhandle(NFS_FH(inode), __func__);
7603 status = ops->get_locations(inode, locations, page, cred);
7604 if (status != -NFS4ERR_DELAY)
7606 nfs4_handle_exception(server, status, &exception);
7607 } while (exception.retry);
7612 * This operation also signals the server that this client is
7613 * performing "lease moved" recovery. The server can stop
7614 * returning NFS4ERR_LEASE_MOVED to this client. A RENEW operation
7615 * is appended to this compound to identify the client ID which is
7616 * performing recovery.
7618 static int _nfs40_proc_fsid_present(struct inode *inode, const struct cred *cred)
7620 struct nfs_server *server = NFS_SERVER(inode);
7621 struct nfs_client *clp = NFS_SERVER(inode)->nfs_client;
7622 struct rpc_clnt *clnt = server->client;
7623 struct nfs4_fsid_present_arg args = {
7624 .fh = NFS_FH(inode),
7625 .clientid = clp->cl_clientid,
7626 .renew = 1, /* append RENEW */
7628 struct nfs4_fsid_present_res res = {
7631 struct rpc_message msg = {
7632 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FSID_PRESENT],
7637 unsigned long now = jiffies;
7640 res.fh = nfs_alloc_fhandle();
7644 nfs4_init_sequence(&args.seq_args, &res.seq_res, 0, 1);
7645 status = nfs4_call_sync_sequence(clnt, server, &msg,
7646 &args.seq_args, &res.seq_res);
7647 nfs_free_fhandle(res.fh);
7651 do_renew_lease(clp, now);
7655 #ifdef CONFIG_NFS_V4_1
7658 * This operation also signals the server that this client is
7659 * performing "lease moved" recovery. The server can stop asserting
7660 * SEQ4_STATUS_LEASE_MOVED for this client. The client ID performing
7661 * this operation is identified in the SEQUENCE operation in this
7664 static int _nfs41_proc_fsid_present(struct inode *inode, const struct cred *cred)
7666 struct nfs_server *server = NFS_SERVER(inode);
7667 struct rpc_clnt *clnt = server->client;
7668 struct nfs4_fsid_present_arg args = {
7669 .fh = NFS_FH(inode),
7671 struct nfs4_fsid_present_res res = {
7673 struct rpc_message msg = {
7674 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FSID_PRESENT],
7681 res.fh = nfs_alloc_fhandle();
7685 nfs4_init_sequence(&args.seq_args, &res.seq_res, 0, 1);
7686 status = nfs4_call_sync_sequence(clnt, server, &msg,
7687 &args.seq_args, &res.seq_res);
7688 nfs_free_fhandle(res.fh);
7689 if (status == NFS4_OK &&
7690 res.seq_res.sr_status_flags & SEQ4_STATUS_LEASE_MOVED)
7691 status = -NFS4ERR_LEASE_MOVED;
7695 #endif /* CONFIG_NFS_V4_1 */
7698 * nfs4_proc_fsid_present - Is this FSID present or absent on server?
7699 * @inode: inode on FSID to check
7700 * @cred: credential to use for this operation
7702 * Server indicates whether the FSID is present, moved, or not
7703 * recognized. This operation is necessary to clear a LEASE_MOVED
7704 * condition for this client ID.
7706 * Returns NFS4_OK if the FSID is present on this server,
7707 * -NFS4ERR_MOVED if the FSID is no longer present, a negative
7708 * NFS4ERR code if some error occurred on the server, or a
7709 * negative errno if a local failure occurred.
7711 int nfs4_proc_fsid_present(struct inode *inode, const struct cred *cred)
7713 struct nfs_server *server = NFS_SERVER(inode);
7714 struct nfs_client *clp = server->nfs_client;
7715 const struct nfs4_mig_recovery_ops *ops =
7716 clp->cl_mvops->mig_recovery_ops;
7717 struct nfs4_exception exception = {
7718 .interruptible = true,
7722 dprintk("%s: FSID %llx:%llx on \"%s\"\n", __func__,
7723 (unsigned long long)server->fsid.major,
7724 (unsigned long long)server->fsid.minor,
7726 nfs_display_fhandle(NFS_FH(inode), __func__);
7729 status = ops->fsid_present(inode, cred);
7730 if (status != -NFS4ERR_DELAY)
7732 nfs4_handle_exception(server, status, &exception);
7733 } while (exception.retry);
7738 * If 'use_integrity' is true and the state managment nfs_client
7739 * cl_rpcclient is using krb5i/p, use the integrity protected cl_rpcclient
7740 * and the machine credential as per RFC3530bis and RFC5661 Security
7741 * Considerations sections. Otherwise, just use the user cred with the
7742 * filesystem's rpc_client.
7744 static int _nfs4_proc_secinfo(struct inode *dir, const struct qstr *name, struct nfs4_secinfo_flavors *flavors, bool use_integrity)
7747 struct rpc_clnt *clnt = NFS_SERVER(dir)->client;
7748 struct nfs_client *clp = NFS_SERVER(dir)->nfs_client;
7749 struct nfs4_secinfo_arg args = {
7750 .dir_fh = NFS_FH(dir),
7753 struct nfs4_secinfo_res res = {
7756 struct rpc_message msg = {
7757 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SECINFO],
7761 struct nfs4_call_sync_data data = {
7762 .seq_server = NFS_SERVER(dir),
7763 .seq_args = &args.seq_args,
7764 .seq_res = &res.seq_res,
7766 struct rpc_task_setup task_setup = {
7768 .rpc_message = &msg,
7769 .callback_ops = clp->cl_mvops->call_sync_ops,
7770 .callback_data = &data,
7771 .flags = RPC_TASK_NO_ROUND_ROBIN,
7773 const struct cred *cred = NULL;
7775 if (use_integrity) {
7776 clnt = clp->cl_rpcclient;
7777 task_setup.rpc_client = clnt;
7779 cred = nfs4_get_clid_cred(clp);
7780 msg.rpc_cred = cred;
7783 dprintk("NFS call secinfo %s\n", name->name);
7785 nfs4_state_protect(clp, NFS_SP4_MACH_CRED_SECINFO, &clnt, &msg);
7786 nfs4_init_sequence(&args.seq_args, &res.seq_res, 0, 0);
7787 status = nfs4_call_sync_custom(&task_setup);
7789 dprintk("NFS reply secinfo: %d\n", status);
7795 int nfs4_proc_secinfo(struct inode *dir, const struct qstr *name,
7796 struct nfs4_secinfo_flavors *flavors)
7798 struct nfs4_exception exception = {
7799 .interruptible = true,
7803 err = -NFS4ERR_WRONGSEC;
7805 /* try to use integrity protection with machine cred */
7806 if (_nfs4_is_integrity_protected(NFS_SERVER(dir)->nfs_client))
7807 err = _nfs4_proc_secinfo(dir, name, flavors, true);
7810 * if unable to use integrity protection, or SECINFO with
7811 * integrity protection returns NFS4ERR_WRONGSEC (which is
7812 * disallowed by spec, but exists in deployed servers) use
7813 * the current filesystem's rpc_client and the user cred.
7815 if (err == -NFS4ERR_WRONGSEC)
7816 err = _nfs4_proc_secinfo(dir, name, flavors, false);
7818 trace_nfs4_secinfo(dir, name, err);
7819 err = nfs4_handle_exception(NFS_SERVER(dir), err,
7821 } while (exception.retry);
7825 #ifdef CONFIG_NFS_V4_1
7827 * Check the exchange flags returned by the server for invalid flags, having
7828 * both PNFS and NON_PNFS flags set, and not having one of NON_PNFS, PNFS, or
7831 static int nfs4_check_cl_exchange_flags(u32 flags)
7833 if (flags & ~EXCHGID4_FLAG_MASK_R)
7835 if ((flags & EXCHGID4_FLAG_USE_PNFS_MDS) &&
7836 (flags & EXCHGID4_FLAG_USE_NON_PNFS))
7838 if (!(flags & (EXCHGID4_FLAG_MASK_PNFS)))
7842 return -NFS4ERR_INVAL;
7846 nfs41_same_server_scope(struct nfs41_server_scope *a,
7847 struct nfs41_server_scope *b)
7849 if (a->server_scope_sz != b->server_scope_sz)
7851 return memcmp(a->server_scope, b->server_scope, a->server_scope_sz) == 0;
7855 nfs4_bind_one_conn_to_session_done(struct rpc_task *task, void *calldata)
7857 struct nfs41_bind_conn_to_session_args *args = task->tk_msg.rpc_argp;
7858 struct nfs_client *clp = args->client;
7860 switch (task->tk_status) {
7861 case -NFS4ERR_BADSESSION:
7862 case -NFS4ERR_DEADSESSION:
7863 nfs4_schedule_session_recovery(clp->cl_session,
7868 static const struct rpc_call_ops nfs4_bind_one_conn_to_session_ops = {
7869 .rpc_call_done = &nfs4_bind_one_conn_to_session_done,
7873 * nfs4_proc_bind_one_conn_to_session()
7875 * The 4.1 client currently uses the same TCP connection for the
7876 * fore and backchannel.
7879 int nfs4_proc_bind_one_conn_to_session(struct rpc_clnt *clnt,
7880 struct rpc_xprt *xprt,
7881 struct nfs_client *clp,
7882 const struct cred *cred)
7885 struct nfs41_bind_conn_to_session_args args = {
7887 .dir = NFS4_CDFC4_FORE_OR_BOTH,
7889 struct nfs41_bind_conn_to_session_res res;
7890 struct rpc_message msg = {
7892 &nfs4_procedures[NFSPROC4_CLNT_BIND_CONN_TO_SESSION],
7897 struct rpc_task_setup task_setup_data = {
7900 .callback_ops = &nfs4_bind_one_conn_to_session_ops,
7901 .rpc_message = &msg,
7902 .flags = RPC_TASK_TIMEOUT,
7904 struct rpc_task *task;
7906 nfs4_copy_sessionid(&args.sessionid, &clp->cl_session->sess_id);
7907 if (!(clp->cl_session->flags & SESSION4_BACK_CHAN))
7908 args.dir = NFS4_CDFC4_FORE;
7910 /* Do not set the backchannel flag unless this is clnt->cl_xprt */
7911 if (xprt != rcu_access_pointer(clnt->cl_xprt))
7912 args.dir = NFS4_CDFC4_FORE;
7914 task = rpc_run_task(&task_setup_data);
7915 if (!IS_ERR(task)) {
7916 status = task->tk_status;
7919 status = PTR_ERR(task);
7920 trace_nfs4_bind_conn_to_session(clp, status);
7922 if (memcmp(res.sessionid.data,
7923 clp->cl_session->sess_id.data, NFS4_MAX_SESSIONID_LEN)) {
7924 dprintk("NFS: %s: Session ID mismatch\n", __func__);
7927 if ((res.dir & args.dir) != res.dir || res.dir == 0) {
7928 dprintk("NFS: %s: Unexpected direction from server\n",
7932 if (res.use_conn_in_rdma_mode != args.use_conn_in_rdma_mode) {
7933 dprintk("NFS: %s: Server returned RDMA mode = true\n",
7942 struct rpc_bind_conn_calldata {
7943 struct nfs_client *clp;
7944 const struct cred *cred;
7948 nfs4_proc_bind_conn_to_session_callback(struct rpc_clnt *clnt,
7949 struct rpc_xprt *xprt,
7952 struct rpc_bind_conn_calldata *p = calldata;
7954 return nfs4_proc_bind_one_conn_to_session(clnt, xprt, p->clp, p->cred);
7957 int nfs4_proc_bind_conn_to_session(struct nfs_client *clp, const struct cred *cred)
7959 struct rpc_bind_conn_calldata data = {
7963 return rpc_clnt_iterate_for_each_xprt(clp->cl_rpcclient,
7964 nfs4_proc_bind_conn_to_session_callback, &data);
7968 * Minimum set of SP4_MACH_CRED operations from RFC 5661 in the enforce map
7969 * and operations we'd like to see to enable certain features in the allow map
7971 static const struct nfs41_state_protection nfs4_sp4_mach_cred_request = {
7972 .how = SP4_MACH_CRED,
7973 .enforce.u.words = {
7974 [1] = 1 << (OP_BIND_CONN_TO_SESSION - 32) |
7975 1 << (OP_EXCHANGE_ID - 32) |
7976 1 << (OP_CREATE_SESSION - 32) |
7977 1 << (OP_DESTROY_SESSION - 32) |
7978 1 << (OP_DESTROY_CLIENTID - 32)
7981 [0] = 1 << (OP_CLOSE) |
7982 1 << (OP_OPEN_DOWNGRADE) |
7984 1 << (OP_DELEGRETURN) |
7986 [1] = 1 << (OP_SECINFO - 32) |
7987 1 << (OP_SECINFO_NO_NAME - 32) |
7988 1 << (OP_LAYOUTRETURN - 32) |
7989 1 << (OP_TEST_STATEID - 32) |
7990 1 << (OP_FREE_STATEID - 32) |
7991 1 << (OP_WRITE - 32)
7996 * Select the state protection mode for client `clp' given the server results
7997 * from exchange_id in `sp'.
7999 * Returns 0 on success, negative errno otherwise.
8001 static int nfs4_sp4_select_mode(struct nfs_client *clp,
8002 struct nfs41_state_protection *sp)
8004 static const u32 supported_enforce[NFS4_OP_MAP_NUM_WORDS] = {
8005 [1] = 1 << (OP_BIND_CONN_TO_SESSION - 32) |
8006 1 << (OP_EXCHANGE_ID - 32) |
8007 1 << (OP_CREATE_SESSION - 32) |
8008 1 << (OP_DESTROY_SESSION - 32) |
8009 1 << (OP_DESTROY_CLIENTID - 32)
8011 unsigned long flags = 0;
8015 if (sp->how == SP4_MACH_CRED) {
8016 /* Print state protect result */
8017 dfprintk(MOUNT, "Server SP4_MACH_CRED support:\n");
8018 for (i = 0; i <= LAST_NFS4_OP; i++) {
8019 if (test_bit(i, sp->enforce.u.longs))
8020 dfprintk(MOUNT, " enforce op %d\n", i);
8021 if (test_bit(i, sp->allow.u.longs))
8022 dfprintk(MOUNT, " allow op %d\n", i);
8025 /* make sure nothing is on enforce list that isn't supported */
8026 for (i = 0; i < NFS4_OP_MAP_NUM_WORDS; i++) {
8027 if (sp->enforce.u.words[i] & ~supported_enforce[i]) {
8028 dfprintk(MOUNT, "sp4_mach_cred: disabled\n");
8035 * Minimal mode - state operations are allowed to use machine
8036 * credential. Note this already happens by default, so the
8037 * client doesn't have to do anything more than the negotiation.
8039 * NOTE: we don't care if EXCHANGE_ID is in the list -
8040 * we're already using the machine cred for exchange_id
8041 * and will never use a different cred.
8043 if (test_bit(OP_BIND_CONN_TO_SESSION, sp->enforce.u.longs) &&
8044 test_bit(OP_CREATE_SESSION, sp->enforce.u.longs) &&
8045 test_bit(OP_DESTROY_SESSION, sp->enforce.u.longs) &&
8046 test_bit(OP_DESTROY_CLIENTID, sp->enforce.u.longs)) {
8047 dfprintk(MOUNT, "sp4_mach_cred:\n");
8048 dfprintk(MOUNT, " minimal mode enabled\n");
8049 __set_bit(NFS_SP4_MACH_CRED_MINIMAL, &flags);
8051 dfprintk(MOUNT, "sp4_mach_cred: disabled\n");
8056 if (test_bit(OP_CLOSE, sp->allow.u.longs) &&
8057 test_bit(OP_OPEN_DOWNGRADE, sp->allow.u.longs) &&
8058 test_bit(OP_DELEGRETURN, sp->allow.u.longs) &&
8059 test_bit(OP_LOCKU, sp->allow.u.longs)) {
8060 dfprintk(MOUNT, " cleanup mode enabled\n");
8061 __set_bit(NFS_SP4_MACH_CRED_CLEANUP, &flags);
8064 if (test_bit(OP_LAYOUTRETURN, sp->allow.u.longs)) {
8065 dfprintk(MOUNT, " pnfs cleanup mode enabled\n");
8066 __set_bit(NFS_SP4_MACH_CRED_PNFS_CLEANUP, &flags);
8069 if (test_bit(OP_SECINFO, sp->allow.u.longs) &&
8070 test_bit(OP_SECINFO_NO_NAME, sp->allow.u.longs)) {
8071 dfprintk(MOUNT, " secinfo mode enabled\n");
8072 __set_bit(NFS_SP4_MACH_CRED_SECINFO, &flags);
8075 if (test_bit(OP_TEST_STATEID, sp->allow.u.longs) &&
8076 test_bit(OP_FREE_STATEID, sp->allow.u.longs)) {
8077 dfprintk(MOUNT, " stateid mode enabled\n");
8078 __set_bit(NFS_SP4_MACH_CRED_STATEID, &flags);
8081 if (test_bit(OP_WRITE, sp->allow.u.longs)) {
8082 dfprintk(MOUNT, " write mode enabled\n");
8083 __set_bit(NFS_SP4_MACH_CRED_WRITE, &flags);
8086 if (test_bit(OP_COMMIT, sp->allow.u.longs)) {
8087 dfprintk(MOUNT, " commit mode enabled\n");
8088 __set_bit(NFS_SP4_MACH_CRED_COMMIT, &flags);
8092 clp->cl_sp4_flags = flags;
8096 struct nfs41_exchange_id_data {
8097 struct nfs41_exchange_id_res res;
8098 struct nfs41_exchange_id_args args;
8101 static void nfs4_exchange_id_release(void *data)
8103 struct nfs41_exchange_id_data *cdata =
8104 (struct nfs41_exchange_id_data *)data;
8106 nfs_put_client(cdata->args.client);
8107 kfree(cdata->res.impl_id);
8108 kfree(cdata->res.server_scope);
8109 kfree(cdata->res.server_owner);
8113 static const struct rpc_call_ops nfs4_exchange_id_call_ops = {
8114 .rpc_release = nfs4_exchange_id_release,
8118 * _nfs4_proc_exchange_id()
8120 * Wrapper for EXCHANGE_ID operation.
8122 static struct rpc_task *
8123 nfs4_run_exchange_id(struct nfs_client *clp, const struct cred *cred,
8124 u32 sp4_how, struct rpc_xprt *xprt)
8126 struct rpc_message msg = {
8127 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_EXCHANGE_ID],
8130 struct rpc_task_setup task_setup_data = {
8131 .rpc_client = clp->cl_rpcclient,
8132 .callback_ops = &nfs4_exchange_id_call_ops,
8133 .rpc_message = &msg,
8134 .flags = RPC_TASK_TIMEOUT | RPC_TASK_NO_ROUND_ROBIN,
8136 struct nfs41_exchange_id_data *calldata;
8139 if (!refcount_inc_not_zero(&clp->cl_count))
8140 return ERR_PTR(-EIO);
8143 calldata = kzalloc(sizeof(*calldata), GFP_NOFS);
8147 nfs4_init_boot_verifier(clp, &calldata->args.verifier);
8149 status = nfs4_init_uniform_client_string(clp);
8153 calldata->res.server_owner = kzalloc(sizeof(struct nfs41_server_owner),
8156 if (unlikely(calldata->res.server_owner == NULL))
8159 calldata->res.server_scope = kzalloc(sizeof(struct nfs41_server_scope),
8161 if (unlikely(calldata->res.server_scope == NULL))
8162 goto out_server_owner;
8164 calldata->res.impl_id = kzalloc(sizeof(struct nfs41_impl_id), GFP_NOFS);
8165 if (unlikely(calldata->res.impl_id == NULL))
8166 goto out_server_scope;
8170 calldata->args.state_protect.how = SP4_NONE;
8174 calldata->args.state_protect = nfs4_sp4_mach_cred_request;
8184 task_setup_data.rpc_xprt = xprt;
8185 task_setup_data.flags |= RPC_TASK_SOFTCONN;
8186 memcpy(calldata->args.verifier.data, clp->cl_confirm.data,
8187 sizeof(calldata->args.verifier.data));
8189 calldata->args.client = clp;
8190 calldata->args.flags = EXCHGID4_FLAG_SUPP_MOVED_REFER |
8191 EXCHGID4_FLAG_BIND_PRINC_STATEID;
8192 #ifdef CONFIG_NFS_V4_1_MIGRATION
8193 calldata->args.flags |= EXCHGID4_FLAG_SUPP_MOVED_MIGR;
8195 msg.rpc_argp = &calldata->args;
8196 msg.rpc_resp = &calldata->res;
8197 task_setup_data.callback_data = calldata;
8199 return rpc_run_task(&task_setup_data);
8202 kfree(calldata->res.impl_id);
8204 kfree(calldata->res.server_scope);
8206 kfree(calldata->res.server_owner);
8210 nfs_put_client(clp);
8211 return ERR_PTR(status);
8215 * _nfs4_proc_exchange_id()
8217 * Wrapper for EXCHANGE_ID operation.
8219 static int _nfs4_proc_exchange_id(struct nfs_client *clp, const struct cred *cred,
8222 struct rpc_task *task;
8223 struct nfs41_exchange_id_args *argp;
8224 struct nfs41_exchange_id_res *resp;
8227 task = nfs4_run_exchange_id(clp, cred, sp4_how, NULL);
8229 return PTR_ERR(task);
8231 argp = task->tk_msg.rpc_argp;
8232 resp = task->tk_msg.rpc_resp;
8233 status = task->tk_status;
8237 status = nfs4_check_cl_exchange_flags(resp->flags);
8241 status = nfs4_sp4_select_mode(clp, &resp->state_protect);
8245 clp->cl_clientid = resp->clientid;
8246 clp->cl_exchange_flags = resp->flags;
8247 clp->cl_seqid = resp->seqid;
8248 /* Client ID is not confirmed */
8249 if (!(resp->flags & EXCHGID4_FLAG_CONFIRMED_R))
8250 clear_bit(NFS4_SESSION_ESTABLISHED,
8251 &clp->cl_session->session_state);
8253 if (clp->cl_serverscope != NULL &&
8254 !nfs41_same_server_scope(clp->cl_serverscope,
8255 resp->server_scope)) {
8256 dprintk("%s: server_scope mismatch detected\n",
8258 set_bit(NFS4CLNT_SERVER_SCOPE_MISMATCH, &clp->cl_state);
8261 swap(clp->cl_serverowner, resp->server_owner);
8262 swap(clp->cl_serverscope, resp->server_scope);
8263 swap(clp->cl_implid, resp->impl_id);
8265 /* Save the EXCHANGE_ID verifier session trunk tests */
8266 memcpy(clp->cl_confirm.data, argp->verifier.data,
8267 sizeof(clp->cl_confirm.data));
8269 trace_nfs4_exchange_id(clp, status);
8275 * nfs4_proc_exchange_id()
8277 * Returns zero, a negative errno, or a negative NFS4ERR status code.
8279 * Since the clientid has expired, all compounds using sessions
8280 * associated with the stale clientid will be returning
8281 * NFS4ERR_BADSESSION in the sequence operation, and will therefore
8282 * be in some phase of session reset.
8284 * Will attempt to negotiate SP4_MACH_CRED if krb5i / krb5p auth is used.
8286 int nfs4_proc_exchange_id(struct nfs_client *clp, const struct cred *cred)
8288 rpc_authflavor_t authflavor = clp->cl_rpcclient->cl_auth->au_flavor;
8291 /* try SP4_MACH_CRED if krb5i/p */
8292 if (authflavor == RPC_AUTH_GSS_KRB5I ||
8293 authflavor == RPC_AUTH_GSS_KRB5P) {
8294 status = _nfs4_proc_exchange_id(clp, cred, SP4_MACH_CRED);
8300 return _nfs4_proc_exchange_id(clp, cred, SP4_NONE);
8304 * nfs4_test_session_trunk
8306 * This is an add_xprt_test() test function called from
8307 * rpc_clnt_setup_test_and_add_xprt.
8309 * The rpc_xprt_switch is referrenced by rpc_clnt_setup_test_and_add_xprt
8310 * and is dereferrenced in nfs4_exchange_id_release
8312 * Upon success, add the new transport to the rpc_clnt
8314 * @clnt: struct rpc_clnt to get new transport
8315 * @xprt: the rpc_xprt to test
8316 * @data: call data for _nfs4_proc_exchange_id.
8318 void nfs4_test_session_trunk(struct rpc_clnt *clnt, struct rpc_xprt *xprt,
8321 struct nfs4_add_xprt_data *adata = (struct nfs4_add_xprt_data *)data;
8322 struct rpc_task *task;
8327 dprintk("--> %s try %s\n", __func__,
8328 xprt->address_strings[RPC_DISPLAY_ADDR]);
8330 sp4_how = (adata->clp->cl_sp4_flags == 0 ? SP4_NONE : SP4_MACH_CRED);
8332 /* Test connection for session trunking. Async exchange_id call */
8333 task = nfs4_run_exchange_id(adata->clp, adata->cred, sp4_how, xprt);
8337 status = task->tk_status;
8339 status = nfs4_detect_session_trunking(adata->clp,
8340 task->tk_msg.rpc_resp, xprt);
8343 rpc_clnt_xprt_switch_add_xprt(clnt, xprt);
8347 EXPORT_SYMBOL_GPL(nfs4_test_session_trunk);
8349 static int _nfs4_proc_destroy_clientid(struct nfs_client *clp,
8350 const struct cred *cred)
8352 struct rpc_message msg = {
8353 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DESTROY_CLIENTID],
8359 status = rpc_call_sync(clp->cl_rpcclient, &msg,
8360 RPC_TASK_TIMEOUT | RPC_TASK_NO_ROUND_ROBIN);
8361 trace_nfs4_destroy_clientid(clp, status);
8363 dprintk("NFS: Got error %d from the server %s on "
8364 "DESTROY_CLIENTID.", status, clp->cl_hostname);
8368 static int nfs4_proc_destroy_clientid(struct nfs_client *clp,
8369 const struct cred *cred)
8374 for (loop = NFS4_MAX_LOOP_ON_RECOVER; loop != 0; loop--) {
8375 ret = _nfs4_proc_destroy_clientid(clp, cred);
8377 case -NFS4ERR_DELAY:
8378 case -NFS4ERR_CLIENTID_BUSY:
8388 int nfs4_destroy_clientid(struct nfs_client *clp)
8390 const struct cred *cred;
8393 if (clp->cl_mvops->minor_version < 1)
8395 if (clp->cl_exchange_flags == 0)
8397 if (clp->cl_preserve_clid)
8399 cred = nfs4_get_clid_cred(clp);
8400 ret = nfs4_proc_destroy_clientid(clp, cred);
8404 case -NFS4ERR_STALE_CLIENTID:
8405 clp->cl_exchange_flags = 0;
8411 #endif /* CONFIG_NFS_V4_1 */
8413 struct nfs4_get_lease_time_data {
8414 struct nfs4_get_lease_time_args *args;
8415 struct nfs4_get_lease_time_res *res;
8416 struct nfs_client *clp;
8419 static void nfs4_get_lease_time_prepare(struct rpc_task *task,
8422 struct nfs4_get_lease_time_data *data =
8423 (struct nfs4_get_lease_time_data *)calldata;
8425 dprintk("--> %s\n", __func__);
8426 /* just setup sequence, do not trigger session recovery
8427 since we're invoked within one */
8428 nfs4_setup_sequence(data->clp,
8429 &data->args->la_seq_args,
8430 &data->res->lr_seq_res,
8432 dprintk("<-- %s\n", __func__);
8436 * Called from nfs4_state_manager thread for session setup, so don't recover
8437 * from sequence operation or clientid errors.
8439 static void nfs4_get_lease_time_done(struct rpc_task *task, void *calldata)
8441 struct nfs4_get_lease_time_data *data =
8442 (struct nfs4_get_lease_time_data *)calldata;
8444 dprintk("--> %s\n", __func__);
8445 if (!nfs4_sequence_done(task, &data->res->lr_seq_res))
8447 switch (task->tk_status) {
8448 case -NFS4ERR_DELAY:
8449 case -NFS4ERR_GRACE:
8450 dprintk("%s Retry: tk_status %d\n", __func__, task->tk_status);
8451 rpc_delay(task, NFS4_POLL_RETRY_MIN);
8452 task->tk_status = 0;
8454 case -NFS4ERR_RETRY_UNCACHED_REP:
8455 rpc_restart_call_prepare(task);
8458 dprintk("<-- %s\n", __func__);
8461 static const struct rpc_call_ops nfs4_get_lease_time_ops = {
8462 .rpc_call_prepare = nfs4_get_lease_time_prepare,
8463 .rpc_call_done = nfs4_get_lease_time_done,
8466 int nfs4_proc_get_lease_time(struct nfs_client *clp, struct nfs_fsinfo *fsinfo)
8468 struct nfs4_get_lease_time_args args;
8469 struct nfs4_get_lease_time_res res = {
8470 .lr_fsinfo = fsinfo,
8472 struct nfs4_get_lease_time_data data = {
8477 struct rpc_message msg = {
8478 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GET_LEASE_TIME],
8482 struct rpc_task_setup task_setup = {
8483 .rpc_client = clp->cl_rpcclient,
8484 .rpc_message = &msg,
8485 .callback_ops = &nfs4_get_lease_time_ops,
8486 .callback_data = &data,
8487 .flags = RPC_TASK_TIMEOUT,
8490 nfs4_init_sequence(&args.la_seq_args, &res.lr_seq_res, 0, 1);
8491 return nfs4_call_sync_custom(&task_setup);
8494 #ifdef CONFIG_NFS_V4_1
8497 * Initialize the values to be used by the client in CREATE_SESSION
8498 * If nfs4_init_session set the fore channel request and response sizes,
8501 * Set the back channel max_resp_sz_cached to zero to force the client to
8502 * always set csa_cachethis to FALSE because the current implementation
8503 * of the back channel DRC only supports caching the CB_SEQUENCE operation.
8505 static void nfs4_init_channel_attrs(struct nfs41_create_session_args *args,
8506 struct rpc_clnt *clnt)
8508 unsigned int max_rqst_sz, max_resp_sz;
8509 unsigned int max_bc_payload = rpc_max_bc_payload(clnt);
8510 unsigned int max_bc_slots = rpc_num_bc_slots(clnt);
8512 max_rqst_sz = NFS_MAX_FILE_IO_SIZE + nfs41_maxwrite_overhead;
8513 max_resp_sz = NFS_MAX_FILE_IO_SIZE + nfs41_maxread_overhead;
8515 /* Fore channel attributes */
8516 args->fc_attrs.max_rqst_sz = max_rqst_sz;
8517 args->fc_attrs.max_resp_sz = max_resp_sz;
8518 args->fc_attrs.max_ops = NFS4_MAX_OPS;
8519 args->fc_attrs.max_reqs = max_session_slots;
8521 dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u "
8522 "max_ops=%u max_reqs=%u\n",
8524 args->fc_attrs.max_rqst_sz, args->fc_attrs.max_resp_sz,
8525 args->fc_attrs.max_ops, args->fc_attrs.max_reqs);
8527 /* Back channel attributes */
8528 args->bc_attrs.max_rqst_sz = max_bc_payload;
8529 args->bc_attrs.max_resp_sz = max_bc_payload;
8530 args->bc_attrs.max_resp_sz_cached = 0;
8531 args->bc_attrs.max_ops = NFS4_MAX_BACK_CHANNEL_OPS;
8532 args->bc_attrs.max_reqs = max_t(unsigned short, max_session_cb_slots, 1);
8533 if (args->bc_attrs.max_reqs > max_bc_slots)
8534 args->bc_attrs.max_reqs = max_bc_slots;
8536 dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u "
8537 "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n",
8539 args->bc_attrs.max_rqst_sz, args->bc_attrs.max_resp_sz,
8540 args->bc_attrs.max_resp_sz_cached, args->bc_attrs.max_ops,
8541 args->bc_attrs.max_reqs);
8544 static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args *args,
8545 struct nfs41_create_session_res *res)
8547 struct nfs4_channel_attrs *sent = &args->fc_attrs;
8548 struct nfs4_channel_attrs *rcvd = &res->fc_attrs;
8550 if (rcvd->max_resp_sz > sent->max_resp_sz)
8553 * Our requested max_ops is the minimum we need; we're not
8554 * prepared to break up compounds into smaller pieces than that.
8555 * So, no point even trying to continue if the server won't
8558 if (rcvd->max_ops < sent->max_ops)
8560 if (rcvd->max_reqs == 0)
8562 if (rcvd->max_reqs > NFS4_MAX_SLOT_TABLE)
8563 rcvd->max_reqs = NFS4_MAX_SLOT_TABLE;
8567 static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args *args,
8568 struct nfs41_create_session_res *res)
8570 struct nfs4_channel_attrs *sent = &args->bc_attrs;
8571 struct nfs4_channel_attrs *rcvd = &res->bc_attrs;
8573 if (!(res->flags & SESSION4_BACK_CHAN))
8575 if (rcvd->max_rqst_sz > sent->max_rqst_sz)
8577 if (rcvd->max_resp_sz < sent->max_resp_sz)
8579 if (rcvd->max_resp_sz_cached > sent->max_resp_sz_cached)
8581 if (rcvd->max_ops > sent->max_ops)
8583 if (rcvd->max_reqs > sent->max_reqs)
8589 static int nfs4_verify_channel_attrs(struct nfs41_create_session_args *args,
8590 struct nfs41_create_session_res *res)
8594 ret = nfs4_verify_fore_channel_attrs(args, res);
8597 return nfs4_verify_back_channel_attrs(args, res);
8600 static void nfs4_update_session(struct nfs4_session *session,
8601 struct nfs41_create_session_res *res)
8603 nfs4_copy_sessionid(&session->sess_id, &res->sessionid);
8604 /* Mark client id and session as being confirmed */
8605 session->clp->cl_exchange_flags |= EXCHGID4_FLAG_CONFIRMED_R;
8606 set_bit(NFS4_SESSION_ESTABLISHED, &session->session_state);
8607 session->flags = res->flags;
8608 memcpy(&session->fc_attrs, &res->fc_attrs, sizeof(session->fc_attrs));
8609 if (res->flags & SESSION4_BACK_CHAN)
8610 memcpy(&session->bc_attrs, &res->bc_attrs,
8611 sizeof(session->bc_attrs));
8614 static int _nfs4_proc_create_session(struct nfs_client *clp,
8615 const struct cred *cred)
8617 struct nfs4_session *session = clp->cl_session;
8618 struct nfs41_create_session_args args = {
8620 .clientid = clp->cl_clientid,
8621 .seqid = clp->cl_seqid,
8622 .cb_program = NFS4_CALLBACK,
8624 struct nfs41_create_session_res res;
8626 struct rpc_message msg = {
8627 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE_SESSION],
8634 nfs4_init_channel_attrs(&args, clp->cl_rpcclient);
8635 args.flags = (SESSION4_PERSIST | SESSION4_BACK_CHAN);
8637 status = rpc_call_sync(session->clp->cl_rpcclient, &msg,
8638 RPC_TASK_TIMEOUT | RPC_TASK_NO_ROUND_ROBIN);
8639 trace_nfs4_create_session(clp, status);
8642 case -NFS4ERR_STALE_CLIENTID:
8643 case -NFS4ERR_DELAY:
8652 /* Verify the session's negotiated channel_attrs values */
8653 status = nfs4_verify_channel_attrs(&args, &res);
8654 /* Increment the clientid slot sequence id */
8657 nfs4_update_session(session, &res);
8664 * Issues a CREATE_SESSION operation to the server.
8665 * It is the responsibility of the caller to verify the session is
8666 * expired before calling this routine.
8668 int nfs4_proc_create_session(struct nfs_client *clp, const struct cred *cred)
8672 struct nfs4_session *session = clp->cl_session;
8674 dprintk("--> %s clp=%p session=%p\n", __func__, clp, session);
8676 status = _nfs4_proc_create_session(clp, cred);
8680 /* Init or reset the session slot tables */
8681 status = nfs4_setup_session_slot_tables(session);
8682 dprintk("slot table setup returned %d\n", status);
8686 ptr = (unsigned *)&session->sess_id.data[0];
8687 dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__,
8688 clp->cl_seqid, ptr[0], ptr[1], ptr[2], ptr[3]);
8690 dprintk("<-- %s\n", __func__);
8695 * Issue the over-the-wire RPC DESTROY_SESSION.
8696 * The caller must serialize access to this routine.
8698 int nfs4_proc_destroy_session(struct nfs4_session *session,
8699 const struct cred *cred)
8701 struct rpc_message msg = {
8702 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DESTROY_SESSION],
8703 .rpc_argp = session,
8708 dprintk("--> nfs4_proc_destroy_session\n");
8710 /* session is still being setup */
8711 if (!test_and_clear_bit(NFS4_SESSION_ESTABLISHED, &session->session_state))
8714 status = rpc_call_sync(session->clp->cl_rpcclient, &msg,
8715 RPC_TASK_TIMEOUT | RPC_TASK_NO_ROUND_ROBIN);
8716 trace_nfs4_destroy_session(session->clp, status);
8719 dprintk("NFS: Got error %d from the server on DESTROY_SESSION. "
8720 "Session has been destroyed regardless...\n", status);
8722 dprintk("<-- nfs4_proc_destroy_session\n");
8727 * Renew the cl_session lease.
8729 struct nfs4_sequence_data {
8730 struct nfs_client *clp;
8731 struct nfs4_sequence_args args;
8732 struct nfs4_sequence_res res;
8735 static void nfs41_sequence_release(void *data)
8737 struct nfs4_sequence_data *calldata = data;
8738 struct nfs_client *clp = calldata->clp;
8740 if (refcount_read(&clp->cl_count) > 1)
8741 nfs4_schedule_state_renewal(clp);
8742 nfs_put_client(clp);
8746 static int nfs41_sequence_handle_errors(struct rpc_task *task, struct nfs_client *clp)
8748 switch(task->tk_status) {
8749 case -NFS4ERR_DELAY:
8750 rpc_delay(task, NFS4_POLL_RETRY_MAX);
8753 nfs4_schedule_lease_recovery(clp);
8758 static void nfs41_sequence_call_done(struct rpc_task *task, void *data)
8760 struct nfs4_sequence_data *calldata = data;
8761 struct nfs_client *clp = calldata->clp;
8763 if (!nfs41_sequence_done(task, task->tk_msg.rpc_resp))
8766 trace_nfs4_sequence(clp, task->tk_status);
8767 if (task->tk_status < 0) {
8768 dprintk("%s ERROR %d\n", __func__, task->tk_status);
8769 if (refcount_read(&clp->cl_count) == 1)
8772 if (nfs41_sequence_handle_errors(task, clp) == -EAGAIN) {
8773 rpc_restart_call_prepare(task);
8777 dprintk("%s rpc_cred %p\n", __func__, task->tk_msg.rpc_cred);
8779 dprintk("<-- %s\n", __func__);
8782 static void nfs41_sequence_prepare(struct rpc_task *task, void *data)
8784 struct nfs4_sequence_data *calldata = data;
8785 struct nfs_client *clp = calldata->clp;
8786 struct nfs4_sequence_args *args;
8787 struct nfs4_sequence_res *res;
8789 args = task->tk_msg.rpc_argp;
8790 res = task->tk_msg.rpc_resp;
8792 nfs4_setup_sequence(clp, args, res, task);
8795 static const struct rpc_call_ops nfs41_sequence_ops = {
8796 .rpc_call_done = nfs41_sequence_call_done,
8797 .rpc_call_prepare = nfs41_sequence_prepare,
8798 .rpc_release = nfs41_sequence_release,
8801 static struct rpc_task *_nfs41_proc_sequence(struct nfs_client *clp,
8802 const struct cred *cred,
8803 struct nfs4_slot *slot,
8806 struct nfs4_sequence_data *calldata;
8807 struct rpc_message msg = {
8808 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SEQUENCE],
8811 struct rpc_task_setup task_setup_data = {
8812 .rpc_client = clp->cl_rpcclient,
8813 .rpc_message = &msg,
8814 .callback_ops = &nfs41_sequence_ops,
8815 .flags = RPC_TASK_ASYNC | RPC_TASK_TIMEOUT,
8817 struct rpc_task *ret;
8819 ret = ERR_PTR(-EIO);
8820 if (!refcount_inc_not_zero(&clp->cl_count))
8823 ret = ERR_PTR(-ENOMEM);
8824 calldata = kzalloc(sizeof(*calldata), GFP_NOFS);
8825 if (calldata == NULL)
8827 nfs4_init_sequence(&calldata->args, &calldata->res, 0, is_privileged);
8828 nfs4_sequence_attach_slot(&calldata->args, &calldata->res, slot);
8829 msg.rpc_argp = &calldata->args;
8830 msg.rpc_resp = &calldata->res;
8831 calldata->clp = clp;
8832 task_setup_data.callback_data = calldata;
8834 ret = rpc_run_task(&task_setup_data);
8839 nfs_put_client(clp);
8841 nfs41_release_slot(slot);
8845 static int nfs41_proc_async_sequence(struct nfs_client *clp, const struct cred *cred, unsigned renew_flags)
8847 struct rpc_task *task;
8850 if ((renew_flags & NFS4_RENEW_TIMEOUT) == 0)
8852 task = _nfs41_proc_sequence(clp, cred, NULL, false);
8854 ret = PTR_ERR(task);
8856 rpc_put_task_async(task);
8857 dprintk("<-- %s status=%d\n", __func__, ret);
8861 static int nfs4_proc_sequence(struct nfs_client *clp, const struct cred *cred)
8863 struct rpc_task *task;
8866 task = _nfs41_proc_sequence(clp, cred, NULL, true);
8868 ret = PTR_ERR(task);
8871 ret = rpc_wait_for_completion_task(task);
8873 ret = task->tk_status;
8876 dprintk("<-- %s status=%d\n", __func__, ret);
8880 struct nfs4_reclaim_complete_data {
8881 struct nfs_client *clp;
8882 struct nfs41_reclaim_complete_args arg;
8883 struct nfs41_reclaim_complete_res res;
8886 static void nfs4_reclaim_complete_prepare(struct rpc_task *task, void *data)
8888 struct nfs4_reclaim_complete_data *calldata = data;
8890 nfs4_setup_sequence(calldata->clp,
8891 &calldata->arg.seq_args,
8892 &calldata->res.seq_res,
8896 static int nfs41_reclaim_complete_handle_errors(struct rpc_task *task, struct nfs_client *clp)
8898 switch(task->tk_status) {
8900 wake_up_all(&clp->cl_lock_waitq);
8902 case -NFS4ERR_COMPLETE_ALREADY:
8903 case -NFS4ERR_WRONG_CRED: /* What to do here? */
8905 case -NFS4ERR_DELAY:
8906 rpc_delay(task, NFS4_POLL_RETRY_MAX);
8908 case -NFS4ERR_RETRY_UNCACHED_REP:
8910 case -NFS4ERR_BADSESSION:
8911 case -NFS4ERR_DEADSESSION:
8912 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION:
8915 nfs4_schedule_lease_recovery(clp);
8920 static void nfs4_reclaim_complete_done(struct rpc_task *task, void *data)
8922 struct nfs4_reclaim_complete_data *calldata = data;
8923 struct nfs_client *clp = calldata->clp;
8924 struct nfs4_sequence_res *res = &calldata->res.seq_res;
8926 dprintk("--> %s\n", __func__);
8927 if (!nfs41_sequence_done(task, res))
8930 trace_nfs4_reclaim_complete(clp, task->tk_status);
8931 if (nfs41_reclaim_complete_handle_errors(task, clp) == -EAGAIN) {
8932 rpc_restart_call_prepare(task);
8935 dprintk("<-- %s\n", __func__);
8938 static void nfs4_free_reclaim_complete_data(void *data)
8940 struct nfs4_reclaim_complete_data *calldata = data;
8945 static const struct rpc_call_ops nfs4_reclaim_complete_call_ops = {
8946 .rpc_call_prepare = nfs4_reclaim_complete_prepare,
8947 .rpc_call_done = nfs4_reclaim_complete_done,
8948 .rpc_release = nfs4_free_reclaim_complete_data,
8952 * Issue a global reclaim complete.
8954 static int nfs41_proc_reclaim_complete(struct nfs_client *clp,
8955 const struct cred *cred)
8957 struct nfs4_reclaim_complete_data *calldata;
8958 struct rpc_message msg = {
8959 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RECLAIM_COMPLETE],
8962 struct rpc_task_setup task_setup_data = {
8963 .rpc_client = clp->cl_rpcclient,
8964 .rpc_message = &msg,
8965 .callback_ops = &nfs4_reclaim_complete_call_ops,
8966 .flags = RPC_TASK_NO_ROUND_ROBIN,
8968 int status = -ENOMEM;
8970 dprintk("--> %s\n", __func__);
8971 calldata = kzalloc(sizeof(*calldata), GFP_NOFS);
8972 if (calldata == NULL)
8974 calldata->clp = clp;
8975 calldata->arg.one_fs = 0;
8977 nfs4_init_sequence(&calldata->arg.seq_args, &calldata->res.seq_res, 0, 1);
8978 msg.rpc_argp = &calldata->arg;
8979 msg.rpc_resp = &calldata->res;
8980 task_setup_data.callback_data = calldata;
8981 status = nfs4_call_sync_custom(&task_setup_data);
8983 dprintk("<-- %s status=%d\n", __func__, status);
8988 nfs4_layoutget_prepare(struct rpc_task *task, void *calldata)
8990 struct nfs4_layoutget *lgp = calldata;
8991 struct nfs_server *server = NFS_SERVER(lgp->args.inode);
8993 dprintk("--> %s\n", __func__);
8994 nfs4_setup_sequence(server->nfs_client, &lgp->args.seq_args,
8995 &lgp->res.seq_res, task);
8996 dprintk("<-- %s\n", __func__);
8999 static void nfs4_layoutget_done(struct rpc_task *task, void *calldata)
9001 struct nfs4_layoutget *lgp = calldata;
9003 dprintk("--> %s\n", __func__);
9004 nfs41_sequence_process(task, &lgp->res.seq_res);
9005 dprintk("<-- %s\n", __func__);
9009 nfs4_layoutget_handle_exception(struct rpc_task *task,
9010 struct nfs4_layoutget *lgp, struct nfs4_exception *exception)
9012 struct inode *inode = lgp->args.inode;
9013 struct nfs_server *server = NFS_SERVER(inode);
9014 struct pnfs_layout_hdr *lo;
9015 int nfs4err = task->tk_status;
9016 int err, status = 0;
9019 dprintk("--> %s tk_status => %d\n", __func__, -task->tk_status);
9021 nfs4_sequence_free_slot(&lgp->res.seq_res);
9028 * NFS4ERR_LAYOUTUNAVAILABLE means we are not supposed to use pnfs
9029 * on the file. set tk_status to -ENODATA to tell upper layer to
9032 case -NFS4ERR_LAYOUTUNAVAILABLE:
9036 * NFS4ERR_BADLAYOUT means the MDS cannot return a layout of
9037 * length lgp->args.minlength != 0 (see RFC5661 section 18.43.3).
9039 case -NFS4ERR_BADLAYOUT:
9040 status = -EOVERFLOW;
9043 * NFS4ERR_LAYOUTTRYLATER is a conflict with another client
9044 * (or clients) writing to the same RAID stripe except when
9045 * the minlength argument is 0 (see RFC5661 section 18.43.3).
9047 * Treat it like we would RECALLCONFLICT -- we retry for a little
9048 * while, and then eventually give up.
9050 case -NFS4ERR_LAYOUTTRYLATER:
9051 if (lgp->args.minlength == 0) {
9052 status = -EOVERFLOW;
9057 case -NFS4ERR_RECALLCONFLICT:
9058 status = -ERECALLCONFLICT;
9060 case -NFS4ERR_DELEG_REVOKED:
9061 case -NFS4ERR_ADMIN_REVOKED:
9062 case -NFS4ERR_EXPIRED:
9063 case -NFS4ERR_BAD_STATEID:
9064 exception->timeout = 0;
9065 spin_lock(&inode->i_lock);
9066 lo = NFS_I(inode)->layout;
9067 /* If the open stateid was bad, then recover it. */
9068 if (!lo || test_bit(NFS_LAYOUT_INVALID_STID, &lo->plh_flags) ||
9069 !nfs4_stateid_match_other(&lgp->args.stateid, &lo->plh_stateid)) {
9070 spin_unlock(&inode->i_lock);
9071 exception->state = lgp->args.ctx->state;
9072 exception->stateid = &lgp->args.stateid;
9077 * Mark the bad layout state as invalid, then retry
9079 pnfs_mark_layout_stateid_invalid(lo, &head);
9080 spin_unlock(&inode->i_lock);
9081 nfs_commit_inode(inode, 0);
9082 pnfs_free_lseg_list(&head);
9087 err = nfs4_handle_exception(server, nfs4err, exception);
9089 if (exception->retry)
9095 dprintk("<-- %s\n", __func__);
9099 size_t max_response_pages(struct nfs_server *server)
9101 u32 max_resp_sz = server->nfs_client->cl_session->fc_attrs.max_resp_sz;
9102 return nfs_page_array_len(0, max_resp_sz);
9105 static void nfs4_layoutget_release(void *calldata)
9107 struct nfs4_layoutget *lgp = calldata;
9109 dprintk("--> %s\n", __func__);
9110 nfs4_sequence_free_slot(&lgp->res.seq_res);
9111 pnfs_layoutget_free(lgp);
9112 dprintk("<-- %s\n", __func__);
9115 static const struct rpc_call_ops nfs4_layoutget_call_ops = {
9116 .rpc_call_prepare = nfs4_layoutget_prepare,
9117 .rpc_call_done = nfs4_layoutget_done,
9118 .rpc_release = nfs4_layoutget_release,
9121 struct pnfs_layout_segment *
9122 nfs4_proc_layoutget(struct nfs4_layoutget *lgp, long *timeout)
9124 struct inode *inode = lgp->args.inode;
9125 struct nfs_server *server = NFS_SERVER(inode);
9126 struct rpc_task *task;
9127 struct rpc_message msg = {
9128 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTGET],
9129 .rpc_argp = &lgp->args,
9130 .rpc_resp = &lgp->res,
9131 .rpc_cred = lgp->cred,
9133 struct rpc_task_setup task_setup_data = {
9134 .rpc_client = server->client,
9135 .rpc_message = &msg,
9136 .callback_ops = &nfs4_layoutget_call_ops,
9137 .callback_data = lgp,
9138 .flags = RPC_TASK_ASYNC,
9140 struct pnfs_layout_segment *lseg = NULL;
9141 struct nfs4_exception exception = {
9143 .timeout = *timeout,
9147 dprintk("--> %s\n", __func__);
9149 /* nfs4_layoutget_release calls pnfs_put_layout_hdr */
9150 pnfs_get_layout_hdr(NFS_I(inode)->layout);
9152 nfs4_init_sequence(&lgp->args.seq_args, &lgp->res.seq_res, 0, 0);
9154 task = rpc_run_task(&task_setup_data);
9156 return ERR_CAST(task);
9157 status = rpc_wait_for_completion_task(task);
9161 if (task->tk_status < 0) {
9162 status = nfs4_layoutget_handle_exception(task, lgp, &exception);
9163 *timeout = exception.timeout;
9164 } else if (lgp->res.layoutp->len == 0) {
9166 *timeout = nfs4_update_delay(&exception.timeout);
9168 lseg = pnfs_layout_process(lgp);
9170 trace_nfs4_layoutget(lgp->args.ctx,
9177 dprintk("<-- %s status=%d\n", __func__, status);
9179 return ERR_PTR(status);
9184 nfs4_layoutreturn_prepare(struct rpc_task *task, void *calldata)
9186 struct nfs4_layoutreturn *lrp = calldata;
9188 dprintk("--> %s\n", __func__);
9189 nfs4_setup_sequence(lrp->clp,
9190 &lrp->args.seq_args,
9193 if (!pnfs_layout_is_valid(lrp->args.layout))
9197 static void nfs4_layoutreturn_done(struct rpc_task *task, void *calldata)
9199 struct nfs4_layoutreturn *lrp = calldata;
9200 struct nfs_server *server;
9202 dprintk("--> %s\n", __func__);
9204 if (!nfs41_sequence_process(task, &lrp->res.seq_res))
9208 * Was there an RPC level error? Assume the call succeeded,
9209 * and that we need to release the layout
9211 if (task->tk_rpc_status != 0 && RPC_WAS_SENT(task)) {
9212 lrp->res.lrs_present = 0;
9216 server = NFS_SERVER(lrp->args.inode);
9217 switch (task->tk_status) {
9218 case -NFS4ERR_OLD_STATEID:
9219 if (nfs4_layout_refresh_old_stateid(&lrp->args.stateid,
9225 task->tk_status = 0;
9229 case -NFS4ERR_DELAY:
9230 if (nfs4_async_handle_error(task, server, NULL, NULL) != -EAGAIN)
9234 dprintk("<-- %s\n", __func__);
9237 task->tk_status = 0;
9238 nfs4_sequence_free_slot(&lrp->res.seq_res);
9239 rpc_restart_call_prepare(task);
9242 static void nfs4_layoutreturn_release(void *calldata)
9244 struct nfs4_layoutreturn *lrp = calldata;
9245 struct pnfs_layout_hdr *lo = lrp->args.layout;
9247 dprintk("--> %s\n", __func__);
9248 pnfs_layoutreturn_free_lsegs(lo, &lrp->args.stateid, &lrp->args.range,
9249 lrp->res.lrs_present ? &lrp->res.stateid : NULL);
9250 nfs4_sequence_free_slot(&lrp->res.seq_res);
9251 if (lrp->ld_private.ops && lrp->ld_private.ops->free)
9252 lrp->ld_private.ops->free(&lrp->ld_private);
9253 pnfs_put_layout_hdr(lrp->args.layout);
9254 nfs_iput_and_deactive(lrp->inode);
9256 dprintk("<-- %s\n", __func__);
9259 static const struct rpc_call_ops nfs4_layoutreturn_call_ops = {
9260 .rpc_call_prepare = nfs4_layoutreturn_prepare,
9261 .rpc_call_done = nfs4_layoutreturn_done,
9262 .rpc_release = nfs4_layoutreturn_release,
9265 int nfs4_proc_layoutreturn(struct nfs4_layoutreturn *lrp, bool sync)
9267 struct rpc_task *task;
9268 struct rpc_message msg = {
9269 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTRETURN],
9270 .rpc_argp = &lrp->args,
9271 .rpc_resp = &lrp->res,
9272 .rpc_cred = lrp->cred,
9274 struct rpc_task_setup task_setup_data = {
9275 .rpc_client = NFS_SERVER(lrp->args.inode)->client,
9276 .rpc_message = &msg,
9277 .callback_ops = &nfs4_layoutreturn_call_ops,
9278 .callback_data = lrp,
9282 nfs4_state_protect(NFS_SERVER(lrp->args.inode)->nfs_client,
9283 NFS_SP4_MACH_CRED_PNFS_CLEANUP,
9284 &task_setup_data.rpc_client, &msg);
9286 dprintk("--> %s\n", __func__);
9288 lrp->inode = nfs_igrab_and_active(lrp->args.inode);
9290 nfs4_layoutreturn_release(lrp);
9293 task_setup_data.flags |= RPC_TASK_ASYNC;
9295 nfs4_init_sequence(&lrp->args.seq_args, &lrp->res.seq_res, 1, 0);
9296 task = rpc_run_task(&task_setup_data);
9298 return PTR_ERR(task);
9300 status = task->tk_status;
9301 trace_nfs4_layoutreturn(lrp->args.inode, &lrp->args.stateid, status);
9302 dprintk("<-- %s status=%d\n", __func__, status);
9308 _nfs4_proc_getdeviceinfo(struct nfs_server *server,
9309 struct pnfs_device *pdev,
9310 const struct cred *cred)
9312 struct nfs4_getdeviceinfo_args args = {
9314 .notify_types = NOTIFY_DEVICEID4_CHANGE |
9315 NOTIFY_DEVICEID4_DELETE,
9317 struct nfs4_getdeviceinfo_res res = {
9320 struct rpc_message msg = {
9321 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETDEVICEINFO],
9328 dprintk("--> %s\n", __func__);
9329 status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0);
9330 if (res.notification & ~args.notify_types)
9331 dprintk("%s: unsupported notification\n", __func__);
9332 if (res.notification != args.notify_types)
9335 dprintk("<-- %s status=%d\n", __func__, status);
9340 int nfs4_proc_getdeviceinfo(struct nfs_server *server,
9341 struct pnfs_device *pdev,
9342 const struct cred *cred)
9344 struct nfs4_exception exception = { };
9348 err = nfs4_handle_exception(server,
9349 _nfs4_proc_getdeviceinfo(server, pdev, cred),
9351 } while (exception.retry);
9354 EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo);
9356 static void nfs4_layoutcommit_prepare(struct rpc_task *task, void *calldata)
9358 struct nfs4_layoutcommit_data *data = calldata;
9359 struct nfs_server *server = NFS_SERVER(data->args.inode);
9361 nfs4_setup_sequence(server->nfs_client,
9362 &data->args.seq_args,
9368 nfs4_layoutcommit_done(struct rpc_task *task, void *calldata)
9370 struct nfs4_layoutcommit_data *data = calldata;
9371 struct nfs_server *server = NFS_SERVER(data->args.inode);
9373 if (!nfs41_sequence_done(task, &data->res.seq_res))
9376 switch (task->tk_status) { /* Just ignore these failures */
9377 case -NFS4ERR_DELEG_REVOKED: /* layout was recalled */
9378 case -NFS4ERR_BADIOMODE: /* no IOMODE_RW layout for range */
9379 case -NFS4ERR_BADLAYOUT: /* no layout */
9380 case -NFS4ERR_GRACE: /* loca_recalim always false */
9381 task->tk_status = 0;
9385 if (nfs4_async_handle_error(task, server, NULL, NULL) == -EAGAIN) {
9386 rpc_restart_call_prepare(task);
9392 static void nfs4_layoutcommit_release(void *calldata)
9394 struct nfs4_layoutcommit_data *data = calldata;
9396 pnfs_cleanup_layoutcommit(data);
9397 nfs_post_op_update_inode_force_wcc(data->args.inode,
9399 put_cred(data->cred);
9400 nfs_iput_and_deactive(data->inode);
9404 static const struct rpc_call_ops nfs4_layoutcommit_ops = {
9405 .rpc_call_prepare = nfs4_layoutcommit_prepare,
9406 .rpc_call_done = nfs4_layoutcommit_done,
9407 .rpc_release = nfs4_layoutcommit_release,
9411 nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data *data, bool sync)
9413 struct rpc_message msg = {
9414 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTCOMMIT],
9415 .rpc_argp = &data->args,
9416 .rpc_resp = &data->res,
9417 .rpc_cred = data->cred,
9419 struct rpc_task_setup task_setup_data = {
9420 .task = &data->task,
9421 .rpc_client = NFS_CLIENT(data->args.inode),
9422 .rpc_message = &msg,
9423 .callback_ops = &nfs4_layoutcommit_ops,
9424 .callback_data = data,
9426 struct rpc_task *task;
9429 dprintk("NFS: initiating layoutcommit call. sync %d "
9430 "lbw: %llu inode %lu\n", sync,
9431 data->args.lastbytewritten,
9432 data->args.inode->i_ino);
9435 data->inode = nfs_igrab_and_active(data->args.inode);
9436 if (data->inode == NULL) {
9437 nfs4_layoutcommit_release(data);
9440 task_setup_data.flags = RPC_TASK_ASYNC;
9442 nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 1, 0);
9443 task = rpc_run_task(&task_setup_data);
9445 return PTR_ERR(task);
9447 status = task->tk_status;
9448 trace_nfs4_layoutcommit(data->args.inode, &data->args.stateid, status);
9449 dprintk("%s: status %d\n", __func__, status);
9455 * Use the state managment nfs_client cl_rpcclient, which uses krb5i (if
9456 * possible) as per RFC3530bis and RFC5661 Security Considerations sections
9459 _nfs41_proc_secinfo_no_name(struct nfs_server *server, struct nfs_fh *fhandle,
9460 struct nfs_fsinfo *info,
9461 struct nfs4_secinfo_flavors *flavors, bool use_integrity)
9463 struct nfs41_secinfo_no_name_args args = {
9464 .style = SECINFO_STYLE_CURRENT_FH,
9466 struct nfs4_secinfo_res res = {
9469 struct rpc_message msg = {
9470 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SECINFO_NO_NAME],
9474 struct rpc_clnt *clnt = server->client;
9475 struct nfs4_call_sync_data data = {
9476 .seq_server = server,
9477 .seq_args = &args.seq_args,
9478 .seq_res = &res.seq_res,
9480 struct rpc_task_setup task_setup = {
9481 .rpc_client = server->client,
9482 .rpc_message = &msg,
9483 .callback_ops = server->nfs_client->cl_mvops->call_sync_ops,
9484 .callback_data = &data,
9485 .flags = RPC_TASK_NO_ROUND_ROBIN,
9487 const struct cred *cred = NULL;
9490 if (use_integrity) {
9491 clnt = server->nfs_client->cl_rpcclient;
9492 task_setup.rpc_client = clnt;
9494 cred = nfs4_get_clid_cred(server->nfs_client);
9495 msg.rpc_cred = cred;
9498 dprintk("--> %s\n", __func__);
9499 nfs4_init_sequence(&args.seq_args, &res.seq_res, 0, 0);
9500 status = nfs4_call_sync_custom(&task_setup);
9501 dprintk("<-- %s status=%d\n", __func__, status);
9509 nfs41_proc_secinfo_no_name(struct nfs_server *server, struct nfs_fh *fhandle,
9510 struct nfs_fsinfo *info, struct nfs4_secinfo_flavors *flavors)
9512 struct nfs4_exception exception = {
9513 .interruptible = true,
9517 /* first try using integrity protection */
9518 err = -NFS4ERR_WRONGSEC;
9520 /* try to use integrity protection with machine cred */
9521 if (_nfs4_is_integrity_protected(server->nfs_client))
9522 err = _nfs41_proc_secinfo_no_name(server, fhandle, info,
9526 * if unable to use integrity protection, or SECINFO with
9527 * integrity protection returns NFS4ERR_WRONGSEC (which is
9528 * disallowed by spec, but exists in deployed servers) use
9529 * the current filesystem's rpc_client and the user cred.
9531 if (err == -NFS4ERR_WRONGSEC)
9532 err = _nfs41_proc_secinfo_no_name(server, fhandle, info,
9537 case -NFS4ERR_WRONGSEC:
9541 err = nfs4_handle_exception(server, err, &exception);
9543 } while (exception.retry);
9549 nfs41_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle,
9550 struct nfs_fsinfo *info)
9554 rpc_authflavor_t flavor = RPC_AUTH_MAXFLAVOR;
9555 struct nfs4_secinfo_flavors *flavors;
9556 struct nfs4_secinfo4 *secinfo;
9559 page = alloc_page(GFP_KERNEL);
9565 flavors = page_address(page);
9566 err = nfs41_proc_secinfo_no_name(server, fhandle, info, flavors);
9569 * Fall back on "guess and check" method if
9570 * the server doesn't support SECINFO_NO_NAME
9572 if (err == -NFS4ERR_WRONGSEC || err == -ENOTSUPP) {
9573 err = nfs4_find_root_sec(server, fhandle, info);
9579 for (i = 0; i < flavors->num_flavors; i++) {
9580 secinfo = &flavors->flavors[i];
9582 switch (secinfo->flavor) {
9586 flavor = rpcauth_get_pseudoflavor(secinfo->flavor,
9587 &secinfo->flavor_info);
9590 flavor = RPC_AUTH_MAXFLAVOR;
9594 if (!nfs_auth_info_match(&server->auth_info, flavor))
9595 flavor = RPC_AUTH_MAXFLAVOR;
9597 if (flavor != RPC_AUTH_MAXFLAVOR) {
9598 err = nfs4_lookup_root_sec(server, fhandle,
9605 if (flavor == RPC_AUTH_MAXFLAVOR)
9616 static int _nfs41_test_stateid(struct nfs_server *server,
9617 nfs4_stateid *stateid,
9618 const struct cred *cred)
9621 struct nfs41_test_stateid_args args = {
9624 struct nfs41_test_stateid_res res;
9625 struct rpc_message msg = {
9626 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_TEST_STATEID],
9631 struct rpc_clnt *rpc_client = server->client;
9633 nfs4_state_protect(server->nfs_client, NFS_SP4_MACH_CRED_STATEID,
9636 dprintk("NFS call test_stateid %p\n", stateid);
9637 nfs4_init_sequence(&args.seq_args, &res.seq_res, 0, 1);
9638 status = nfs4_call_sync_sequence(rpc_client, server, &msg,
9639 &args.seq_args, &res.seq_res);
9640 if (status != NFS_OK) {
9641 dprintk("NFS reply test_stateid: failed, %d\n", status);
9644 dprintk("NFS reply test_stateid: succeeded, %d\n", -res.status);
9648 static void nfs4_handle_delay_or_session_error(struct nfs_server *server,
9649 int err, struct nfs4_exception *exception)
9651 exception->retry = 0;
9653 case -NFS4ERR_DELAY:
9654 case -NFS4ERR_RETRY_UNCACHED_REP:
9655 nfs4_handle_exception(server, err, exception);
9657 case -NFS4ERR_BADSESSION:
9658 case -NFS4ERR_BADSLOT:
9659 case -NFS4ERR_BAD_HIGH_SLOT:
9660 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION:
9661 case -NFS4ERR_DEADSESSION:
9662 nfs4_do_handle_exception(server, err, exception);
9667 * nfs41_test_stateid - perform a TEST_STATEID operation
9669 * @server: server / transport on which to perform the operation
9670 * @stateid: state ID to test
9673 * Returns NFS_OK if the server recognizes that "stateid" is valid.
9674 * Otherwise a negative NFS4ERR value is returned if the operation
9675 * failed or the state ID is not currently valid.
9677 static int nfs41_test_stateid(struct nfs_server *server,
9678 nfs4_stateid *stateid,
9679 const struct cred *cred)
9681 struct nfs4_exception exception = {
9682 .interruptible = true,
9686 err = _nfs41_test_stateid(server, stateid, cred);
9687 nfs4_handle_delay_or_session_error(server, err, &exception);
9688 } while (exception.retry);
9692 struct nfs_free_stateid_data {
9693 struct nfs_server *server;
9694 struct nfs41_free_stateid_args args;
9695 struct nfs41_free_stateid_res res;
9698 static void nfs41_free_stateid_prepare(struct rpc_task *task, void *calldata)
9700 struct nfs_free_stateid_data *data = calldata;
9701 nfs4_setup_sequence(data->server->nfs_client,
9702 &data->args.seq_args,
9707 static void nfs41_free_stateid_done(struct rpc_task *task, void *calldata)
9709 struct nfs_free_stateid_data *data = calldata;
9711 nfs41_sequence_done(task, &data->res.seq_res);
9713 switch (task->tk_status) {
9714 case -NFS4ERR_DELAY:
9715 if (nfs4_async_handle_error(task, data->server, NULL, NULL) == -EAGAIN)
9716 rpc_restart_call_prepare(task);
9720 static void nfs41_free_stateid_release(void *calldata)
9725 static const struct rpc_call_ops nfs41_free_stateid_ops = {
9726 .rpc_call_prepare = nfs41_free_stateid_prepare,
9727 .rpc_call_done = nfs41_free_stateid_done,
9728 .rpc_release = nfs41_free_stateid_release,
9732 * nfs41_free_stateid - perform a FREE_STATEID operation
9734 * @server: server / transport on which to perform the operation
9735 * @stateid: state ID to release
9737 * @privileged: set to true if this call needs to be privileged
9739 * Note: this function is always asynchronous.
9741 static int nfs41_free_stateid(struct nfs_server *server,
9742 const nfs4_stateid *stateid,
9743 const struct cred *cred,
9746 struct rpc_message msg = {
9747 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FREE_STATEID],
9750 struct rpc_task_setup task_setup = {
9751 .rpc_client = server->client,
9752 .rpc_message = &msg,
9753 .callback_ops = &nfs41_free_stateid_ops,
9754 .flags = RPC_TASK_ASYNC,
9756 struct nfs_free_stateid_data *data;
9757 struct rpc_task *task;
9759 nfs4_state_protect(server->nfs_client, NFS_SP4_MACH_CRED_STATEID,
9760 &task_setup.rpc_client, &msg);
9762 dprintk("NFS call free_stateid %p\n", stateid);
9763 data = kmalloc(sizeof(*data), GFP_NOFS);
9766 data->server = server;
9767 nfs4_stateid_copy(&data->args.stateid, stateid);
9769 task_setup.callback_data = data;
9771 msg.rpc_argp = &data->args;
9772 msg.rpc_resp = &data->res;
9773 nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 1, privileged);
9774 task = rpc_run_task(&task_setup);
9776 return PTR_ERR(task);
9782 nfs41_free_lock_state(struct nfs_server *server, struct nfs4_lock_state *lsp)
9784 const struct cred *cred = lsp->ls_state->owner->so_cred;
9786 nfs41_free_stateid(server, &lsp->ls_stateid, cred, false);
9787 nfs4_free_lock_state(server, lsp);
9790 static bool nfs41_match_stateid(const nfs4_stateid *s1,
9791 const nfs4_stateid *s2)
9793 if (s1->type != s2->type)
9796 if (memcmp(s1->other, s2->other, sizeof(s1->other)) != 0)
9799 if (s1->seqid == s2->seqid)
9802 return s1->seqid == 0 || s2->seqid == 0;
9805 #endif /* CONFIG_NFS_V4_1 */
9807 static bool nfs4_match_stateid(const nfs4_stateid *s1,
9808 const nfs4_stateid *s2)
9810 return nfs4_stateid_match(s1, s2);
9814 static const struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops = {
9815 .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT,
9816 .state_flag_bit = NFS_STATE_RECLAIM_REBOOT,
9817 .recover_open = nfs4_open_reclaim,
9818 .recover_lock = nfs4_lock_reclaim,
9819 .establish_clid = nfs4_init_clientid,
9820 .detect_trunking = nfs40_discover_server_trunking,
9823 #if defined(CONFIG_NFS_V4_1)
9824 static const struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops = {
9825 .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT,
9826 .state_flag_bit = NFS_STATE_RECLAIM_REBOOT,
9827 .recover_open = nfs4_open_reclaim,
9828 .recover_lock = nfs4_lock_reclaim,
9829 .establish_clid = nfs41_init_clientid,
9830 .reclaim_complete = nfs41_proc_reclaim_complete,
9831 .detect_trunking = nfs41_discover_server_trunking,
9833 #endif /* CONFIG_NFS_V4_1 */
9835 static const struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops = {
9836 .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE,
9837 .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE,
9838 .recover_open = nfs40_open_expired,
9839 .recover_lock = nfs4_lock_expired,
9840 .establish_clid = nfs4_init_clientid,
9843 #if defined(CONFIG_NFS_V4_1)
9844 static const struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops = {
9845 .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE,
9846 .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE,
9847 .recover_open = nfs41_open_expired,
9848 .recover_lock = nfs41_lock_expired,
9849 .establish_clid = nfs41_init_clientid,
9851 #endif /* CONFIG_NFS_V4_1 */
9853 static const struct nfs4_state_maintenance_ops nfs40_state_renewal_ops = {
9854 .sched_state_renewal = nfs4_proc_async_renew,
9855 .get_state_renewal_cred = nfs4_get_renew_cred,
9856 .renew_lease = nfs4_proc_renew,
9859 #if defined(CONFIG_NFS_V4_1)
9860 static const struct nfs4_state_maintenance_ops nfs41_state_renewal_ops = {
9861 .sched_state_renewal = nfs41_proc_async_sequence,
9862 .get_state_renewal_cred = nfs4_get_machine_cred,
9863 .renew_lease = nfs4_proc_sequence,
9867 static const struct nfs4_mig_recovery_ops nfs40_mig_recovery_ops = {
9868 .get_locations = _nfs40_proc_get_locations,
9869 .fsid_present = _nfs40_proc_fsid_present,
9872 #if defined(CONFIG_NFS_V4_1)
9873 static const struct nfs4_mig_recovery_ops nfs41_mig_recovery_ops = {
9874 .get_locations = _nfs41_proc_get_locations,
9875 .fsid_present = _nfs41_proc_fsid_present,
9877 #endif /* CONFIG_NFS_V4_1 */
9879 static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops = {
9881 .init_caps = NFS_CAP_READDIRPLUS
9882 | NFS_CAP_ATOMIC_OPEN
9883 | NFS_CAP_POSIX_LOCK,
9884 .init_client = nfs40_init_client,
9885 .shutdown_client = nfs40_shutdown_client,
9886 .match_stateid = nfs4_match_stateid,
9887 .find_root_sec = nfs4_find_root_sec,
9888 .free_lock_state = nfs4_release_lockowner,
9889 .test_and_free_expired = nfs40_test_and_free_expired_stateid,
9890 .alloc_seqid = nfs_alloc_seqid,
9891 .call_sync_ops = &nfs40_call_sync_ops,
9892 .reboot_recovery_ops = &nfs40_reboot_recovery_ops,
9893 .nograce_recovery_ops = &nfs40_nograce_recovery_ops,
9894 .state_renewal_ops = &nfs40_state_renewal_ops,
9895 .mig_recovery_ops = &nfs40_mig_recovery_ops,
9898 #if defined(CONFIG_NFS_V4_1)
9899 static struct nfs_seqid *
9900 nfs_alloc_no_seqid(struct nfs_seqid_counter *arg1, gfp_t arg2)
9905 static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops = {
9907 .init_caps = NFS_CAP_READDIRPLUS
9908 | NFS_CAP_ATOMIC_OPEN
9909 | NFS_CAP_POSIX_LOCK
9910 | NFS_CAP_STATEID_NFSV41
9911 | NFS_CAP_ATOMIC_OPEN_V1
9913 .init_client = nfs41_init_client,
9914 .shutdown_client = nfs41_shutdown_client,
9915 .match_stateid = nfs41_match_stateid,
9916 .find_root_sec = nfs41_find_root_sec,
9917 .free_lock_state = nfs41_free_lock_state,
9918 .test_and_free_expired = nfs41_test_and_free_expired_stateid,
9919 .alloc_seqid = nfs_alloc_no_seqid,
9920 .session_trunk = nfs4_test_session_trunk,
9921 .call_sync_ops = &nfs41_call_sync_ops,
9922 .reboot_recovery_ops = &nfs41_reboot_recovery_ops,
9923 .nograce_recovery_ops = &nfs41_nograce_recovery_ops,
9924 .state_renewal_ops = &nfs41_state_renewal_ops,
9925 .mig_recovery_ops = &nfs41_mig_recovery_ops,
9929 #if defined(CONFIG_NFS_V4_2)
9930 static const struct nfs4_minor_version_ops nfs_v4_2_minor_ops = {
9932 .init_caps = NFS_CAP_READDIRPLUS
9933 | NFS_CAP_ATOMIC_OPEN
9934 | NFS_CAP_POSIX_LOCK
9935 | NFS_CAP_STATEID_NFSV41
9936 | NFS_CAP_ATOMIC_OPEN_V1
9940 | NFS_CAP_OFFLOAD_CANCEL
9941 | NFS_CAP_COPY_NOTIFY
9942 | NFS_CAP_DEALLOCATE
9944 | NFS_CAP_LAYOUTSTATS
9946 | NFS_CAP_LAYOUTERROR,
9947 .init_client = nfs41_init_client,
9948 .shutdown_client = nfs41_shutdown_client,
9949 .match_stateid = nfs41_match_stateid,
9950 .find_root_sec = nfs41_find_root_sec,
9951 .free_lock_state = nfs41_free_lock_state,
9952 .call_sync_ops = &nfs41_call_sync_ops,
9953 .test_and_free_expired = nfs41_test_and_free_expired_stateid,
9954 .alloc_seqid = nfs_alloc_no_seqid,
9955 .session_trunk = nfs4_test_session_trunk,
9956 .reboot_recovery_ops = &nfs41_reboot_recovery_ops,
9957 .nograce_recovery_ops = &nfs41_nograce_recovery_ops,
9958 .state_renewal_ops = &nfs41_state_renewal_ops,
9959 .mig_recovery_ops = &nfs41_mig_recovery_ops,
9963 const struct nfs4_minor_version_ops *nfs_v4_minor_ops[] = {
9964 [0] = &nfs_v4_0_minor_ops,
9965 #if defined(CONFIG_NFS_V4_1)
9966 [1] = &nfs_v4_1_minor_ops,
9968 #if defined(CONFIG_NFS_V4_2)
9969 [2] = &nfs_v4_2_minor_ops,
9973 static ssize_t nfs4_listxattr(struct dentry *dentry, char *list, size_t size)
9975 ssize_t error, error2;
9977 error = generic_listxattr(dentry, list, size);
9985 error2 = nfs4_listxattr_nfs4_label(d_inode(dentry), list, size);
9988 return error + error2;
9991 static const struct inode_operations nfs4_dir_inode_operations = {
9992 .create = nfs_create,
9993 .lookup = nfs_lookup,
9994 .atomic_open = nfs_atomic_open,
9996 .unlink = nfs_unlink,
9997 .symlink = nfs_symlink,
10000 .mknod = nfs_mknod,
10001 .rename = nfs_rename,
10002 .permission = nfs_permission,
10003 .getattr = nfs_getattr,
10004 .setattr = nfs_setattr,
10005 .listxattr = nfs4_listxattr,
10008 static const struct inode_operations nfs4_file_inode_operations = {
10009 .permission = nfs_permission,
10010 .getattr = nfs_getattr,
10011 .setattr = nfs_setattr,
10012 .listxattr = nfs4_listxattr,
10015 const struct nfs_rpc_ops nfs_v4_clientops = {
10016 .version = 4, /* protocol version */
10017 .dentry_ops = &nfs4_dentry_operations,
10018 .dir_inode_ops = &nfs4_dir_inode_operations,
10019 .file_inode_ops = &nfs4_file_inode_operations,
10020 .file_ops = &nfs4_file_operations,
10021 .getroot = nfs4_proc_get_root,
10022 .submount = nfs4_submount,
10023 .try_get_tree = nfs4_try_get_tree,
10024 .getattr = nfs4_proc_getattr,
10025 .setattr = nfs4_proc_setattr,
10026 .lookup = nfs4_proc_lookup,
10027 .lookupp = nfs4_proc_lookupp,
10028 .access = nfs4_proc_access,
10029 .readlink = nfs4_proc_readlink,
10030 .create = nfs4_proc_create,
10031 .remove = nfs4_proc_remove,
10032 .unlink_setup = nfs4_proc_unlink_setup,
10033 .unlink_rpc_prepare = nfs4_proc_unlink_rpc_prepare,
10034 .unlink_done = nfs4_proc_unlink_done,
10035 .rename_setup = nfs4_proc_rename_setup,
10036 .rename_rpc_prepare = nfs4_proc_rename_rpc_prepare,
10037 .rename_done = nfs4_proc_rename_done,
10038 .link = nfs4_proc_link,
10039 .symlink = nfs4_proc_symlink,
10040 .mkdir = nfs4_proc_mkdir,
10041 .rmdir = nfs4_proc_rmdir,
10042 .readdir = nfs4_proc_readdir,
10043 .mknod = nfs4_proc_mknod,
10044 .statfs = nfs4_proc_statfs,
10045 .fsinfo = nfs4_proc_fsinfo,
10046 .pathconf = nfs4_proc_pathconf,
10047 .set_capabilities = nfs4_server_capabilities,
10048 .decode_dirent = nfs4_decode_dirent,
10049 .pgio_rpc_prepare = nfs4_proc_pgio_rpc_prepare,
10050 .read_setup = nfs4_proc_read_setup,
10051 .read_done = nfs4_read_done,
10052 .write_setup = nfs4_proc_write_setup,
10053 .write_done = nfs4_write_done,
10054 .commit_setup = nfs4_proc_commit_setup,
10055 .commit_rpc_prepare = nfs4_proc_commit_rpc_prepare,
10056 .commit_done = nfs4_commit_done,
10057 .lock = nfs4_proc_lock,
10058 .clear_acl_cache = nfs4_zap_acl_attr,
10059 .close_context = nfs4_close_context,
10060 .open_context = nfs4_atomic_open,
10061 .have_delegation = nfs4_have_delegation,
10062 .alloc_client = nfs4_alloc_client,
10063 .init_client = nfs4_init_client,
10064 .free_client = nfs4_free_client,
10065 .create_server = nfs4_create_server,
10066 .clone_server = nfs_clone_server,
10069 static const struct xattr_handler nfs4_xattr_nfs4_acl_handler = {
10070 .name = XATTR_NAME_NFSV4_ACL,
10071 .list = nfs4_xattr_list_nfs4_acl,
10072 .get = nfs4_xattr_get_nfs4_acl,
10073 .set = nfs4_xattr_set_nfs4_acl,
10076 const struct xattr_handler *nfs4_xattr_handlers[] = {
10077 &nfs4_xattr_nfs4_acl_handler,
10078 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
10079 &nfs4_xattr_nfs4_label_handler,
10086 * c-basic-offset: 8