4 * Client-side procedure declarations for NFSv4.
6 * Copyright (c) 2002 The Regents of the University of Michigan.
9 * Kendrick Smith <kmsmith@umich.edu>
10 * Andy Adamson <andros@umich.edu>
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
16 * 1. Redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer.
18 * 2. Redistributions in binary form must reproduce the above copyright
19 * notice, this list of conditions and the following disclaimer in the
20 * documentation and/or other materials provided with the distribution.
21 * 3. Neither the name of the University nor the names of its
22 * contributors may be used to endorse or promote products derived
23 * from this software without specific prior written permission.
25 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
26 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
27 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
28 * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
32 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
33 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
34 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
35 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
39 #include <linux/delay.h>
40 #include <linux/errno.h>
41 #include <linux/string.h>
42 #include <linux/ratelimit.h>
43 #include <linux/printk.h>
44 #include <linux/slab.h>
45 #include <linux/sunrpc/clnt.h>
46 #include <linux/nfs.h>
47 #include <linux/nfs4.h>
48 #include <linux/nfs_fs.h>
49 #include <linux/nfs_page.h>
50 #include <linux/nfs_mount.h>
51 #include <linux/namei.h>
52 #include <linux/mount.h>
53 #include <linux/module.h>
54 #include <linux/nfs_idmap.h>
55 #include <linux/xattr.h>
56 #include <linux/utsname.h>
57 #include <linux/freezer.h>
60 #include "delegation.h"
66 #include "nfs4session.h"
69 #include "nfs4trace.h"
71 #define NFSDBG_FACILITY NFSDBG_PROC
73 #define NFS4_POLL_RETRY_MIN (HZ/10)
74 #define NFS4_POLL_RETRY_MAX (15*HZ)
77 static int _nfs4_proc_open(struct nfs4_opendata *data);
78 static int _nfs4_recover_proc_open(struct nfs4_opendata *data);
79 static int nfs4_do_fsinfo(struct nfs_server *, struct nfs_fh *, struct nfs_fsinfo *);
80 static int nfs4_async_handle_error(struct rpc_task *, const struct nfs_server *, struct nfs4_state *);
81 static void nfs_fixup_referral_attributes(struct nfs_fattr *fattr);
82 static int nfs4_proc_getattr(struct nfs_server *, struct nfs_fh *, struct nfs_fattr *, struct nfs4_label *label);
83 static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr, struct nfs4_label *label);
84 static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred,
85 struct nfs_fattr *fattr, struct iattr *sattr,
86 struct nfs4_state *state, struct nfs4_label *ilabel,
87 struct nfs4_label *olabel);
88 #ifdef CONFIG_NFS_V4_1
89 static int nfs41_test_stateid(struct nfs_server *, nfs4_stateid *,
91 static int nfs41_free_stateid(struct nfs_server *, nfs4_stateid *,
95 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
96 static inline struct nfs4_label *
97 nfs4_label_init_security(struct inode *dir, struct dentry *dentry,
98 struct iattr *sattr, struct nfs4_label *label)
105 if (nfs_server_capable(dir, NFS_CAP_SECURITY_LABEL) == 0)
108 if (NFS_SERVER(dir)->nfs_client->cl_minorversion < 2)
111 err = security_dentry_init_security(dentry, sattr->ia_mode,
112 &dentry->d_name, (void **)&label->label, &label->len);
119 nfs4_label_release_security(struct nfs4_label *label)
122 security_release_secctx(label->label, label->len);
124 static inline u32 *nfs4_bitmask(struct nfs_server *server, struct nfs4_label *label)
127 return server->attr_bitmask;
129 return server->attr_bitmask_nl;
132 static inline struct nfs4_label *
133 nfs4_label_init_security(struct inode *dir, struct dentry *dentry,
134 struct iattr *sattr, struct nfs4_label *l)
137 nfs4_label_release_security(struct nfs4_label *label)
140 nfs4_bitmask(struct nfs_server *server, struct nfs4_label *label)
141 { return server->attr_bitmask; }
144 /* Prevent leaks of NFSv4 errors into userland */
145 static int nfs4_map_errors(int err)
150 case -NFS4ERR_RESOURCE:
151 case -NFS4ERR_LAYOUTTRYLATER:
152 case -NFS4ERR_RECALLCONFLICT:
154 case -NFS4ERR_WRONGSEC:
156 case -NFS4ERR_BADOWNER:
157 case -NFS4ERR_BADNAME:
159 case -NFS4ERR_SHARE_DENIED:
161 case -NFS4ERR_MINOR_VERS_MISMATCH:
162 return -EPROTONOSUPPORT;
163 case -NFS4ERR_ACCESS:
165 case -NFS4ERR_FILE_OPEN:
168 dprintk("%s could not handle NFSv4 error %d\n",
176 * This is our standard bitmap for GETATTR requests.
178 const u32 nfs4_fattr_bitmap[3] = {
180 | FATTR4_WORD0_CHANGE
183 | FATTR4_WORD0_FILEID,
185 | FATTR4_WORD1_NUMLINKS
187 | FATTR4_WORD1_OWNER_GROUP
188 | FATTR4_WORD1_RAWDEV
189 | FATTR4_WORD1_SPACE_USED
190 | FATTR4_WORD1_TIME_ACCESS
191 | FATTR4_WORD1_TIME_METADATA
192 | FATTR4_WORD1_TIME_MODIFY,
193 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
194 FATTR4_WORD2_SECURITY_LABEL
198 static const u32 nfs4_pnfs_open_bitmap[3] = {
200 | FATTR4_WORD0_CHANGE
203 | FATTR4_WORD0_FILEID,
205 | FATTR4_WORD1_NUMLINKS
207 | FATTR4_WORD1_OWNER_GROUP
208 | FATTR4_WORD1_RAWDEV
209 | FATTR4_WORD1_SPACE_USED
210 | FATTR4_WORD1_TIME_ACCESS
211 | FATTR4_WORD1_TIME_METADATA
212 | FATTR4_WORD1_TIME_MODIFY,
213 FATTR4_WORD2_MDSTHRESHOLD
216 static const u32 nfs4_open_noattr_bitmap[3] = {
218 | FATTR4_WORD0_CHANGE
219 | FATTR4_WORD0_FILEID,
222 const u32 nfs4_statfs_bitmap[3] = {
223 FATTR4_WORD0_FILES_AVAIL
224 | FATTR4_WORD0_FILES_FREE
225 | FATTR4_WORD0_FILES_TOTAL,
226 FATTR4_WORD1_SPACE_AVAIL
227 | FATTR4_WORD1_SPACE_FREE
228 | FATTR4_WORD1_SPACE_TOTAL
231 const u32 nfs4_pathconf_bitmap[3] = {
233 | FATTR4_WORD0_MAXNAME,
237 const u32 nfs4_fsinfo_bitmap[3] = { FATTR4_WORD0_MAXFILESIZE
238 | FATTR4_WORD0_MAXREAD
239 | FATTR4_WORD0_MAXWRITE
240 | FATTR4_WORD0_LEASE_TIME,
241 FATTR4_WORD1_TIME_DELTA
242 | FATTR4_WORD1_FS_LAYOUT_TYPES,
243 FATTR4_WORD2_LAYOUT_BLKSIZE
246 const u32 nfs4_fs_locations_bitmap[3] = {
248 | FATTR4_WORD0_CHANGE
251 | FATTR4_WORD0_FILEID
252 | FATTR4_WORD0_FS_LOCATIONS,
254 | FATTR4_WORD1_NUMLINKS
256 | FATTR4_WORD1_OWNER_GROUP
257 | FATTR4_WORD1_RAWDEV
258 | FATTR4_WORD1_SPACE_USED
259 | FATTR4_WORD1_TIME_ACCESS
260 | FATTR4_WORD1_TIME_METADATA
261 | FATTR4_WORD1_TIME_MODIFY
262 | FATTR4_WORD1_MOUNTED_ON_FILEID,
265 static void nfs4_setup_readdir(u64 cookie, __be32 *verifier, struct dentry *dentry,
266 struct nfs4_readdir_arg *readdir)
271 readdir->cookie = cookie;
272 memcpy(&readdir->verifier, verifier, sizeof(readdir->verifier));
277 memset(&readdir->verifier, 0, sizeof(readdir->verifier));
282 * NFSv4 servers do not return entries for '.' and '..'
283 * Therefore, we fake these entries here. We let '.'
284 * have cookie 0 and '..' have cookie 1. Note that
285 * when talking to the server, we always send cookie 0
288 start = p = kmap_atomic(*readdir->pages);
291 *p++ = xdr_one; /* next */
292 *p++ = xdr_zero; /* cookie, first word */
293 *p++ = xdr_one; /* cookie, second word */
294 *p++ = xdr_one; /* entry len */
295 memcpy(p, ".\0\0\0", 4); /* entry */
297 *p++ = xdr_one; /* bitmap length */
298 *p++ = htonl(FATTR4_WORD0_FILEID); /* bitmap */
299 *p++ = htonl(8); /* attribute buffer length */
300 p = xdr_encode_hyper(p, NFS_FILEID(dentry->d_inode));
303 *p++ = xdr_one; /* next */
304 *p++ = xdr_zero; /* cookie, first word */
305 *p++ = xdr_two; /* cookie, second word */
306 *p++ = xdr_two; /* entry len */
307 memcpy(p, "..\0\0", 4); /* entry */
309 *p++ = xdr_one; /* bitmap length */
310 *p++ = htonl(FATTR4_WORD0_FILEID); /* bitmap */
311 *p++ = htonl(8); /* attribute buffer length */
312 p = xdr_encode_hyper(p, NFS_FILEID(dentry->d_parent->d_inode));
314 readdir->pgbase = (char *)p - (char *)start;
315 readdir->count -= readdir->pgbase;
316 kunmap_atomic(start);
319 static int nfs4_delay(struct rpc_clnt *clnt, long *timeout)
326 *timeout = NFS4_POLL_RETRY_MIN;
327 if (*timeout > NFS4_POLL_RETRY_MAX)
328 *timeout = NFS4_POLL_RETRY_MAX;
329 freezable_schedule_timeout_killable_unsafe(*timeout);
330 if (fatal_signal_pending(current))
336 /* This is the error handling routine for processes that are allowed
339 static int nfs4_handle_exception(struct nfs_server *server, int errorcode, struct nfs4_exception *exception)
341 struct nfs_client *clp = server->nfs_client;
342 struct nfs4_state *state = exception->state;
343 struct inode *inode = exception->inode;
346 exception->retry = 0;
350 case -NFS4ERR_OPENMODE:
351 if (inode && nfs4_have_delegation(inode, FMODE_READ)) {
352 nfs4_inode_return_delegation(inode);
353 exception->retry = 1;
358 ret = nfs4_schedule_stateid_recovery(server, state);
361 goto wait_on_recovery;
362 case -NFS4ERR_DELEG_REVOKED:
363 case -NFS4ERR_ADMIN_REVOKED:
364 case -NFS4ERR_BAD_STATEID:
365 if (inode != NULL && nfs4_have_delegation(inode, FMODE_READ)) {
366 nfs_remove_bad_delegation(inode);
367 exception->retry = 1;
372 ret = nfs4_schedule_stateid_recovery(server, state);
375 goto wait_on_recovery;
376 case -NFS4ERR_EXPIRED:
378 ret = nfs4_schedule_stateid_recovery(server, state);
382 case -NFS4ERR_STALE_STATEID:
383 case -NFS4ERR_STALE_CLIENTID:
384 nfs4_schedule_lease_recovery(clp);
385 goto wait_on_recovery;
386 #if defined(CONFIG_NFS_V4_1)
387 case -NFS4ERR_BADSESSION:
388 case -NFS4ERR_BADSLOT:
389 case -NFS4ERR_BAD_HIGH_SLOT:
390 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION:
391 case -NFS4ERR_DEADSESSION:
392 case -NFS4ERR_SEQ_FALSE_RETRY:
393 case -NFS4ERR_SEQ_MISORDERED:
394 dprintk("%s ERROR: %d Reset session\n", __func__,
396 nfs4_schedule_session_recovery(clp->cl_session, errorcode);
397 goto wait_on_recovery;
398 #endif /* defined(CONFIG_NFS_V4_1) */
399 case -NFS4ERR_FILE_OPEN:
400 if (exception->timeout > HZ) {
401 /* We have retried a decent amount, time to
409 ret = nfs4_delay(server->client, &exception->timeout);
412 case -NFS4ERR_RETRY_UNCACHED_REP:
413 case -NFS4ERR_OLD_STATEID:
414 exception->retry = 1;
416 case -NFS4ERR_BADOWNER:
417 /* The following works around a Linux server bug! */
418 case -NFS4ERR_BADNAME:
419 if (server->caps & NFS_CAP_UIDGID_NOMAP) {
420 server->caps &= ~NFS_CAP_UIDGID_NOMAP;
421 exception->retry = 1;
422 printk(KERN_WARNING "NFS: v4 server %s "
423 "does not accept raw "
425 "Reenabling the idmapper.\n",
426 server->nfs_client->cl_hostname);
429 /* We failed to handle the error */
430 return nfs4_map_errors(ret);
432 ret = nfs4_wait_clnt_recover(clp);
434 exception->retry = 1;
439 * Return 'true' if 'clp' is using an rpc_client that is integrity protected
440 * or 'false' otherwise.
442 static bool _nfs4_is_integrity_protected(struct nfs_client *clp)
444 rpc_authflavor_t flavor = clp->cl_rpcclient->cl_auth->au_flavor;
446 if (flavor == RPC_AUTH_GSS_KRB5I ||
447 flavor == RPC_AUTH_GSS_KRB5P)
453 static void do_renew_lease(struct nfs_client *clp, unsigned long timestamp)
455 spin_lock(&clp->cl_lock);
456 if (time_before(clp->cl_last_renewal,timestamp))
457 clp->cl_last_renewal = timestamp;
458 spin_unlock(&clp->cl_lock);
461 static void renew_lease(const struct nfs_server *server, unsigned long timestamp)
463 do_renew_lease(server->nfs_client, timestamp);
466 struct nfs4_call_sync_data {
467 const struct nfs_server *seq_server;
468 struct nfs4_sequence_args *seq_args;
469 struct nfs4_sequence_res *seq_res;
472 static void nfs4_init_sequence(struct nfs4_sequence_args *args,
473 struct nfs4_sequence_res *res, int cache_reply)
475 args->sa_slot = NULL;
476 args->sa_cache_this = cache_reply;
477 args->sa_privileged = 0;
482 static void nfs4_set_sequence_privileged(struct nfs4_sequence_args *args)
484 args->sa_privileged = 1;
487 static int nfs40_setup_sequence(const struct nfs_server *server,
488 struct nfs4_sequence_args *args,
489 struct nfs4_sequence_res *res,
490 struct rpc_task *task)
492 struct nfs4_slot_table *tbl = server->nfs_client->cl_slot_tbl;
493 struct nfs4_slot *slot;
495 /* slot already allocated? */
496 if (res->sr_slot != NULL)
499 spin_lock(&tbl->slot_tbl_lock);
500 if (nfs4_slot_tbl_draining(tbl) && !args->sa_privileged)
503 slot = nfs4_alloc_slot(tbl);
505 if (slot == ERR_PTR(-ENOMEM))
506 task->tk_timeout = HZ >> 2;
509 spin_unlock(&tbl->slot_tbl_lock);
511 args->sa_slot = slot;
515 rpc_call_start(task);
519 if (args->sa_privileged)
520 rpc_sleep_on_priority(&tbl->slot_tbl_waitq, task,
521 NULL, RPC_PRIORITY_PRIVILEGED);
523 rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL);
524 spin_unlock(&tbl->slot_tbl_lock);
528 static int nfs40_sequence_done(struct rpc_task *task,
529 struct nfs4_sequence_res *res)
531 struct nfs4_slot *slot = res->sr_slot;
532 struct nfs4_slot_table *tbl;
534 if (!RPC_WAS_SENT(task))
538 spin_lock(&tbl->slot_tbl_lock);
539 if (!nfs41_wake_and_assign_slot(tbl, slot))
540 nfs4_free_slot(tbl, slot);
541 spin_unlock(&tbl->slot_tbl_lock);
548 #if defined(CONFIG_NFS_V4_1)
550 static void nfs41_sequence_free_slot(struct nfs4_sequence_res *res)
552 struct nfs4_session *session;
553 struct nfs4_slot_table *tbl;
554 bool send_new_highest_used_slotid = false;
557 /* just wake up the next guy waiting since
558 * we may have not consumed a slot after all */
559 dprintk("%s: No slot\n", __func__);
562 tbl = res->sr_slot->table;
563 session = tbl->session;
565 spin_lock(&tbl->slot_tbl_lock);
566 /* Be nice to the server: try to ensure that the last transmitted
567 * value for highest_user_slotid <= target_highest_slotid
569 if (tbl->highest_used_slotid > tbl->target_highest_slotid)
570 send_new_highest_used_slotid = true;
572 if (nfs41_wake_and_assign_slot(tbl, res->sr_slot)) {
573 send_new_highest_used_slotid = false;
576 nfs4_free_slot(tbl, res->sr_slot);
578 if (tbl->highest_used_slotid != NFS4_NO_SLOT)
579 send_new_highest_used_slotid = false;
581 spin_unlock(&tbl->slot_tbl_lock);
583 if (send_new_highest_used_slotid)
584 nfs41_server_notify_highest_slotid_update(session->clp);
587 static int nfs41_sequence_done(struct rpc_task *task, struct nfs4_sequence_res *res)
589 struct nfs4_session *session;
590 struct nfs4_slot *slot;
591 struct nfs_client *clp;
592 bool interrupted = false;
595 /* don't increment the sequence number if the task wasn't sent */
596 if (!RPC_WAS_SENT(task))
600 session = slot->table->session;
602 if (slot->interrupted) {
603 slot->interrupted = 0;
607 trace_nfs4_sequence_done(session, res);
608 /* Check the SEQUENCE operation status */
609 switch (res->sr_status) {
611 /* Update the slot's sequence and clientid lease timer */
614 do_renew_lease(clp, res->sr_timestamp);
615 /* Check sequence flags */
616 if (res->sr_status_flags != 0)
617 nfs4_schedule_lease_recovery(clp);
618 nfs41_update_target_slotid(slot->table, slot, res);
622 * sr_status remains 1 if an RPC level error occurred.
623 * The server may or may not have processed the sequence
625 * Mark the slot as having hosted an interrupted RPC call.
627 slot->interrupted = 1;
630 /* The server detected a resend of the RPC call and
631 * returned NFS4ERR_DELAY as per Section 2.10.6.2
634 dprintk("%s: slot=%u seq=%u: Operation in progress\n",
639 case -NFS4ERR_BADSLOT:
641 * The slot id we used was probably retired. Try again
642 * using a different slot id.
645 case -NFS4ERR_SEQ_MISORDERED:
647 * Was the last operation on this sequence interrupted?
648 * If so, retry after bumping the sequence number.
655 * Could this slot have been previously retired?
656 * If so, then the server may be expecting seq_nr = 1!
658 if (slot->seq_nr != 1) {
663 case -NFS4ERR_SEQ_FALSE_RETRY:
667 /* Just update the slot sequence no. */
671 /* The session may be reset by one of the error handlers. */
672 dprintk("%s: Error %d free the slot \n", __func__, res->sr_status);
673 nfs41_sequence_free_slot(res);
676 if (rpc_restart_call_prepare(task)) {
682 if (!rpc_restart_call(task))
684 rpc_delay(task, NFS4_POLL_RETRY_MAX);
688 static int nfs4_sequence_done(struct rpc_task *task,
689 struct nfs4_sequence_res *res)
691 if (res->sr_slot == NULL)
693 if (!res->sr_slot->table->session)
694 return nfs40_sequence_done(task, res);
695 return nfs41_sequence_done(task, res);
698 int nfs41_setup_sequence(struct nfs4_session *session,
699 struct nfs4_sequence_args *args,
700 struct nfs4_sequence_res *res,
701 struct rpc_task *task)
703 struct nfs4_slot *slot;
704 struct nfs4_slot_table *tbl;
706 dprintk("--> %s\n", __func__);
707 /* slot already allocated? */
708 if (res->sr_slot != NULL)
711 tbl = &session->fc_slot_table;
713 task->tk_timeout = 0;
715 spin_lock(&tbl->slot_tbl_lock);
716 if (test_bit(NFS4_SLOT_TBL_DRAINING, &tbl->slot_tbl_state) &&
717 !args->sa_privileged) {
718 /* The state manager will wait until the slot table is empty */
719 dprintk("%s session is draining\n", __func__);
723 slot = nfs4_alloc_slot(tbl);
725 /* If out of memory, try again in 1/4 second */
726 if (slot == ERR_PTR(-ENOMEM))
727 task->tk_timeout = HZ >> 2;
728 dprintk("<-- %s: no free slots\n", __func__);
731 spin_unlock(&tbl->slot_tbl_lock);
733 args->sa_slot = slot;
735 dprintk("<-- %s slotid=%u seqid=%u\n", __func__,
736 slot->slot_nr, slot->seq_nr);
739 res->sr_timestamp = jiffies;
740 res->sr_status_flags = 0;
742 * sr_status is only set in decode_sequence, and so will remain
743 * set to 1 if an rpc level failure occurs.
746 trace_nfs4_setup_sequence(session, args);
748 rpc_call_start(task);
751 /* Privileged tasks are queued with top priority */
752 if (args->sa_privileged)
753 rpc_sleep_on_priority(&tbl->slot_tbl_waitq, task,
754 NULL, RPC_PRIORITY_PRIVILEGED);
756 rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL);
757 spin_unlock(&tbl->slot_tbl_lock);
760 EXPORT_SYMBOL_GPL(nfs41_setup_sequence);
762 static int nfs4_setup_sequence(const struct nfs_server *server,
763 struct nfs4_sequence_args *args,
764 struct nfs4_sequence_res *res,
765 struct rpc_task *task)
767 struct nfs4_session *session = nfs4_get_session(server);
771 return nfs40_setup_sequence(server, args, res, task);
773 dprintk("--> %s clp %p session %p sr_slot %u\n",
774 __func__, session->clp, session, res->sr_slot ?
775 res->sr_slot->slot_nr : NFS4_NO_SLOT);
777 ret = nfs41_setup_sequence(session, args, res, task);
779 dprintk("<-- %s status=%d\n", __func__, ret);
783 static void nfs41_call_sync_prepare(struct rpc_task *task, void *calldata)
785 struct nfs4_call_sync_data *data = calldata;
786 struct nfs4_session *session = nfs4_get_session(data->seq_server);
788 dprintk("--> %s data->seq_server %p\n", __func__, data->seq_server);
790 nfs41_setup_sequence(session, data->seq_args, data->seq_res, task);
793 static void nfs41_call_sync_done(struct rpc_task *task, void *calldata)
795 struct nfs4_call_sync_data *data = calldata;
797 nfs41_sequence_done(task, data->seq_res);
800 static const struct rpc_call_ops nfs41_call_sync_ops = {
801 .rpc_call_prepare = nfs41_call_sync_prepare,
802 .rpc_call_done = nfs41_call_sync_done,
805 #else /* !CONFIG_NFS_V4_1 */
807 static int nfs4_setup_sequence(const struct nfs_server *server,
808 struct nfs4_sequence_args *args,
809 struct nfs4_sequence_res *res,
810 struct rpc_task *task)
812 return nfs40_setup_sequence(server, args, res, task);
815 static int nfs4_sequence_done(struct rpc_task *task,
816 struct nfs4_sequence_res *res)
818 return nfs40_sequence_done(task, res);
821 #endif /* !CONFIG_NFS_V4_1 */
823 static void nfs40_call_sync_prepare(struct rpc_task *task, void *calldata)
825 struct nfs4_call_sync_data *data = calldata;
826 nfs4_setup_sequence(data->seq_server,
827 data->seq_args, data->seq_res, task);
830 static void nfs40_call_sync_done(struct rpc_task *task, void *calldata)
832 struct nfs4_call_sync_data *data = calldata;
833 nfs4_sequence_done(task, data->seq_res);
836 static const struct rpc_call_ops nfs40_call_sync_ops = {
837 .rpc_call_prepare = nfs40_call_sync_prepare,
838 .rpc_call_done = nfs40_call_sync_done,
841 static int nfs4_call_sync_sequence(struct rpc_clnt *clnt,
842 struct nfs_server *server,
843 struct rpc_message *msg,
844 struct nfs4_sequence_args *args,
845 struct nfs4_sequence_res *res)
848 struct rpc_task *task;
849 struct nfs_client *clp = server->nfs_client;
850 struct nfs4_call_sync_data data = {
851 .seq_server = server,
855 struct rpc_task_setup task_setup = {
858 .callback_ops = clp->cl_mvops->call_sync_ops,
859 .callback_data = &data
862 task = rpc_run_task(&task_setup);
866 ret = task->tk_status;
873 int nfs4_call_sync(struct rpc_clnt *clnt,
874 struct nfs_server *server,
875 struct rpc_message *msg,
876 struct nfs4_sequence_args *args,
877 struct nfs4_sequence_res *res,
880 nfs4_init_sequence(args, res, cache_reply);
881 return nfs4_call_sync_sequence(clnt, server, msg, args, res);
884 static void update_changeattr(struct inode *dir, struct nfs4_change_info *cinfo)
886 struct nfs_inode *nfsi = NFS_I(dir);
888 spin_lock(&dir->i_lock);
889 nfsi->cache_validity |= NFS_INO_INVALID_ATTR|NFS_INO_INVALID_DATA;
890 if (!cinfo->atomic || cinfo->before != dir->i_version)
891 nfs_force_lookup_revalidate(dir);
892 dir->i_version = cinfo->after;
893 nfs_fscache_invalidate(dir);
894 spin_unlock(&dir->i_lock);
897 struct nfs4_opendata {
899 struct nfs_openargs o_arg;
900 struct nfs_openres o_res;
901 struct nfs_open_confirmargs c_arg;
902 struct nfs_open_confirmres c_res;
903 struct nfs4_string owner_name;
904 struct nfs4_string group_name;
905 struct nfs_fattr f_attr;
906 struct nfs4_label *f_label;
908 struct dentry *dentry;
909 struct nfs4_state_owner *owner;
910 struct nfs4_state *state;
912 unsigned long timestamp;
913 unsigned int rpc_done : 1;
914 unsigned int is_recover : 1;
919 static bool nfs4_clear_cap_atomic_open_v1(struct nfs_server *server,
920 int err, struct nfs4_exception *exception)
924 if (!(server->caps & NFS_CAP_ATOMIC_OPEN_V1))
926 server->caps &= ~NFS_CAP_ATOMIC_OPEN_V1;
927 exception->retry = 1;
931 static enum open_claim_type4
932 nfs4_map_atomic_open_claim(struct nfs_server *server,
933 enum open_claim_type4 claim)
935 if (server->caps & NFS_CAP_ATOMIC_OPEN_V1)
940 case NFS4_OPEN_CLAIM_FH:
941 return NFS4_OPEN_CLAIM_NULL;
942 case NFS4_OPEN_CLAIM_DELEG_CUR_FH:
943 return NFS4_OPEN_CLAIM_DELEGATE_CUR;
944 case NFS4_OPEN_CLAIM_DELEG_PREV_FH:
945 return NFS4_OPEN_CLAIM_DELEGATE_PREV;
949 static void nfs4_init_opendata_res(struct nfs4_opendata *p)
951 p->o_res.f_attr = &p->f_attr;
952 p->o_res.f_label = p->f_label;
953 p->o_res.seqid = p->o_arg.seqid;
954 p->c_res.seqid = p->c_arg.seqid;
955 p->o_res.server = p->o_arg.server;
956 p->o_res.access_request = p->o_arg.access;
957 nfs_fattr_init(&p->f_attr);
958 nfs_fattr_init_names(&p->f_attr, &p->owner_name, &p->group_name);
961 static struct nfs4_opendata *nfs4_opendata_alloc(struct dentry *dentry,
962 struct nfs4_state_owner *sp, fmode_t fmode, int flags,
963 const struct iattr *attrs,
964 struct nfs4_label *label,
965 enum open_claim_type4 claim,
968 struct dentry *parent = dget_parent(dentry);
969 struct inode *dir = parent->d_inode;
970 struct nfs_server *server = NFS_SERVER(dir);
971 struct nfs4_opendata *p;
973 p = kzalloc(sizeof(*p), gfp_mask);
977 p->f_label = nfs4_label_alloc(server, gfp_mask);
978 if (IS_ERR(p->f_label))
981 p->o_arg.seqid = nfs_alloc_seqid(&sp->so_seqid, gfp_mask);
982 if (p->o_arg.seqid == NULL)
984 nfs_sb_active(dentry->d_sb);
985 p->dentry = dget(dentry);
988 atomic_inc(&sp->so_count);
989 p->o_arg.open_flags = flags;
990 p->o_arg.fmode = fmode & (FMODE_READ|FMODE_WRITE);
991 /* don't put an ACCESS op in OPEN compound if O_EXCL, because ACCESS
992 * will return permission denied for all bits until close */
993 if (!(flags & O_EXCL)) {
994 /* ask server to check for all possible rights as results
996 p->o_arg.access = NFS4_ACCESS_READ | NFS4_ACCESS_MODIFY |
997 NFS4_ACCESS_EXTEND | NFS4_ACCESS_EXECUTE;
999 p->o_arg.clientid = server->nfs_client->cl_clientid;
1000 p->o_arg.id.create_time = ktime_to_ns(sp->so_seqid.create_time);
1001 p->o_arg.id.uniquifier = sp->so_seqid.owner_id;
1002 p->o_arg.name = &dentry->d_name;
1003 p->o_arg.server = server;
1004 p->o_arg.bitmask = nfs4_bitmask(server, label);
1005 p->o_arg.open_bitmap = &nfs4_fattr_bitmap[0];
1006 p->o_arg.label = label;
1007 p->o_arg.claim = nfs4_map_atomic_open_claim(server, claim);
1008 switch (p->o_arg.claim) {
1009 case NFS4_OPEN_CLAIM_NULL:
1010 case NFS4_OPEN_CLAIM_DELEGATE_CUR:
1011 case NFS4_OPEN_CLAIM_DELEGATE_PREV:
1012 p->o_arg.fh = NFS_FH(dir);
1014 case NFS4_OPEN_CLAIM_PREVIOUS:
1015 case NFS4_OPEN_CLAIM_FH:
1016 case NFS4_OPEN_CLAIM_DELEG_CUR_FH:
1017 case NFS4_OPEN_CLAIM_DELEG_PREV_FH:
1018 p->o_arg.fh = NFS_FH(dentry->d_inode);
1020 if (attrs != NULL && attrs->ia_valid != 0) {
1023 p->o_arg.u.attrs = &p->attrs;
1024 memcpy(&p->attrs, attrs, sizeof(p->attrs));
1027 verf[1] = current->pid;
1028 memcpy(p->o_arg.u.verifier.data, verf,
1029 sizeof(p->o_arg.u.verifier.data));
1031 p->c_arg.fh = &p->o_res.fh;
1032 p->c_arg.stateid = &p->o_res.stateid;
1033 p->c_arg.seqid = p->o_arg.seqid;
1034 nfs4_init_opendata_res(p);
1035 kref_init(&p->kref);
1039 nfs4_label_free(p->f_label);
1047 static void nfs4_opendata_free(struct kref *kref)
1049 struct nfs4_opendata *p = container_of(kref,
1050 struct nfs4_opendata, kref);
1051 struct super_block *sb = p->dentry->d_sb;
1053 nfs_free_seqid(p->o_arg.seqid);
1054 if (p->state != NULL)
1055 nfs4_put_open_state(p->state);
1056 nfs4_put_state_owner(p->owner);
1058 nfs4_label_free(p->f_label);
1062 nfs_sb_deactive(sb);
1063 nfs_fattr_free_names(&p->f_attr);
1067 static void nfs4_opendata_put(struct nfs4_opendata *p)
1070 kref_put(&p->kref, nfs4_opendata_free);
1073 static int nfs4_wait_for_completion_rpc_task(struct rpc_task *task)
1077 ret = rpc_wait_for_completion_task(task);
1081 static int can_open_cached(struct nfs4_state *state, fmode_t mode, int open_mode)
1085 if (open_mode & (O_EXCL|O_TRUNC))
1087 switch (mode & (FMODE_READ|FMODE_WRITE)) {
1089 ret |= test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0
1090 && state->n_rdonly != 0;
1093 ret |= test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0
1094 && state->n_wronly != 0;
1096 case FMODE_READ|FMODE_WRITE:
1097 ret |= test_bit(NFS_O_RDWR_STATE, &state->flags) != 0
1098 && state->n_rdwr != 0;
1104 static int can_open_delegated(struct nfs_delegation *delegation, fmode_t fmode)
1106 if (delegation == NULL)
1108 if ((delegation->type & fmode) != fmode)
1110 if (test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags))
1112 if (test_bit(NFS_DELEGATION_RETURNING, &delegation->flags))
1114 nfs_mark_delegation_referenced(delegation);
1118 static void update_open_stateflags(struct nfs4_state *state, fmode_t fmode)
1127 case FMODE_READ|FMODE_WRITE:
1130 nfs4_state_set_mode_locked(state, state->state | fmode);
1133 static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode)
1135 if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0)
1136 nfs4_stateid_copy(&state->stateid, stateid);
1137 nfs4_stateid_copy(&state->open_stateid, stateid);
1138 set_bit(NFS_OPEN_STATE, &state->flags);
1141 set_bit(NFS_O_RDONLY_STATE, &state->flags);
1144 set_bit(NFS_O_WRONLY_STATE, &state->flags);
1146 case FMODE_READ|FMODE_WRITE:
1147 set_bit(NFS_O_RDWR_STATE, &state->flags);
1151 static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode)
1153 write_seqlock(&state->seqlock);
1154 nfs_set_open_stateid_locked(state, stateid, fmode);
1155 write_sequnlock(&state->seqlock);
1158 static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, fmode_t fmode)
1161 * Protect the call to nfs4_state_set_mode_locked and
1162 * serialise the stateid update
1164 write_seqlock(&state->seqlock);
1165 if (deleg_stateid != NULL) {
1166 nfs4_stateid_copy(&state->stateid, deleg_stateid);
1167 set_bit(NFS_DELEGATED_STATE, &state->flags);
1169 if (open_stateid != NULL)
1170 nfs_set_open_stateid_locked(state, open_stateid, fmode);
1171 write_sequnlock(&state->seqlock);
1172 spin_lock(&state->owner->so_lock);
1173 update_open_stateflags(state, fmode);
1174 spin_unlock(&state->owner->so_lock);
1177 static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, fmode_t fmode)
1179 struct nfs_inode *nfsi = NFS_I(state->inode);
1180 struct nfs_delegation *deleg_cur;
1183 fmode &= (FMODE_READ|FMODE_WRITE);
1186 deleg_cur = rcu_dereference(nfsi->delegation);
1187 if (deleg_cur == NULL)
1190 spin_lock(&deleg_cur->lock);
1191 if (rcu_dereference(nfsi->delegation) != deleg_cur ||
1192 test_bit(NFS_DELEGATION_RETURNING, &deleg_cur->flags) ||
1193 (deleg_cur->type & fmode) != fmode)
1194 goto no_delegation_unlock;
1196 if (delegation == NULL)
1197 delegation = &deleg_cur->stateid;
1198 else if (!nfs4_stateid_match(&deleg_cur->stateid, delegation))
1199 goto no_delegation_unlock;
1201 nfs_mark_delegation_referenced(deleg_cur);
1202 __update_open_stateid(state, open_stateid, &deleg_cur->stateid, fmode);
1204 no_delegation_unlock:
1205 spin_unlock(&deleg_cur->lock);
1209 if (!ret && open_stateid != NULL) {
1210 __update_open_stateid(state, open_stateid, NULL, fmode);
1218 static void nfs4_return_incompatible_delegation(struct inode *inode, fmode_t fmode)
1220 struct nfs_delegation *delegation;
1223 delegation = rcu_dereference(NFS_I(inode)->delegation);
1224 if (delegation == NULL || (delegation->type & fmode) == fmode) {
1229 nfs4_inode_return_delegation(inode);
1232 static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
1234 struct nfs4_state *state = opendata->state;
1235 struct nfs_inode *nfsi = NFS_I(state->inode);
1236 struct nfs_delegation *delegation;
1237 int open_mode = opendata->o_arg.open_flags;
1238 fmode_t fmode = opendata->o_arg.fmode;
1239 nfs4_stateid stateid;
1243 if (can_open_cached(state, fmode, open_mode)) {
1244 spin_lock(&state->owner->so_lock);
1245 if (can_open_cached(state, fmode, open_mode)) {
1246 update_open_stateflags(state, fmode);
1247 spin_unlock(&state->owner->so_lock);
1248 goto out_return_state;
1250 spin_unlock(&state->owner->so_lock);
1253 delegation = rcu_dereference(nfsi->delegation);
1254 if (!can_open_delegated(delegation, fmode)) {
1258 /* Save the delegation */
1259 nfs4_stateid_copy(&stateid, &delegation->stateid);
1261 nfs_release_seqid(opendata->o_arg.seqid);
1262 if (!opendata->is_recover) {
1263 ret = nfs_may_open(state->inode, state->owner->so_cred, open_mode);
1269 /* Try to update the stateid using the delegation */
1270 if (update_open_stateid(state, NULL, &stateid, fmode))
1271 goto out_return_state;
1274 return ERR_PTR(ret);
1276 atomic_inc(&state->count);
1281 nfs4_opendata_check_deleg(struct nfs4_opendata *data, struct nfs4_state *state)
1283 struct nfs_client *clp = NFS_SERVER(state->inode)->nfs_client;
1284 struct nfs_delegation *delegation;
1285 int delegation_flags = 0;
1288 delegation = rcu_dereference(NFS_I(state->inode)->delegation);
1290 delegation_flags = delegation->flags;
1292 if (data->o_arg.claim == NFS4_OPEN_CLAIM_DELEGATE_CUR) {
1293 pr_err_ratelimited("NFS: Broken NFSv4 server %s is "
1294 "returning a delegation for "
1295 "OPEN(CLAIM_DELEGATE_CUR)\n",
1297 } else if ((delegation_flags & 1UL<<NFS_DELEGATION_NEED_RECLAIM) == 0)
1298 nfs_inode_set_delegation(state->inode,
1299 data->owner->so_cred,
1302 nfs_inode_reclaim_delegation(state->inode,
1303 data->owner->so_cred,
1308 * Check the inode attributes against the CLAIM_PREVIOUS returned attributes
1309 * and update the nfs4_state.
1311 static struct nfs4_state *
1312 _nfs4_opendata_reclaim_to_nfs4_state(struct nfs4_opendata *data)
1314 struct inode *inode = data->state->inode;
1315 struct nfs4_state *state = data->state;
1318 if (!data->rpc_done) {
1319 ret = data->rpc_status;
1324 if (!(data->f_attr.valid & NFS_ATTR_FATTR_TYPE) ||
1325 !(data->f_attr.valid & NFS_ATTR_FATTR_FILEID) ||
1326 !(data->f_attr.valid & NFS_ATTR_FATTR_CHANGE))
1330 state = nfs4_get_open_state(inode, data->owner);
1334 ret = nfs_refresh_inode(inode, &data->f_attr);
1338 nfs_setsecurity(inode, &data->f_attr, data->f_label);
1340 if (data->o_res.delegation_type != 0)
1341 nfs4_opendata_check_deleg(data, state);
1342 update_open_stateid(state, &data->o_res.stateid, NULL,
1347 return ERR_PTR(ret);
1351 static struct nfs4_state *
1352 _nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data)
1354 struct inode *inode;
1355 struct nfs4_state *state = NULL;
1358 if (!data->rpc_done) {
1359 state = nfs4_try_open_cached(data);
1364 if (!(data->f_attr.valid & NFS_ATTR_FATTR))
1366 inode = nfs_fhget(data->dir->d_sb, &data->o_res.fh, &data->f_attr, data->f_label);
1367 ret = PTR_ERR(inode);
1371 state = nfs4_get_open_state(inode, data->owner);
1374 if (data->o_res.delegation_type != 0)
1375 nfs4_opendata_check_deleg(data, state);
1376 update_open_stateid(state, &data->o_res.stateid, NULL,
1380 nfs_release_seqid(data->o_arg.seqid);
1385 return ERR_PTR(ret);
1388 static struct nfs4_state *
1389 nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data)
1391 if (data->o_arg.claim == NFS4_OPEN_CLAIM_PREVIOUS)
1392 return _nfs4_opendata_reclaim_to_nfs4_state(data);
1393 return _nfs4_opendata_to_nfs4_state(data);
1396 static struct nfs_open_context *nfs4_state_find_open_context(struct nfs4_state *state)
1398 struct nfs_inode *nfsi = NFS_I(state->inode);
1399 struct nfs_open_context *ctx;
1401 spin_lock(&state->inode->i_lock);
1402 list_for_each_entry(ctx, &nfsi->open_files, list) {
1403 if (ctx->state != state)
1405 get_nfs_open_context(ctx);
1406 spin_unlock(&state->inode->i_lock);
1409 spin_unlock(&state->inode->i_lock);
1410 return ERR_PTR(-ENOENT);
1413 static struct nfs4_opendata *nfs4_open_recoverdata_alloc(struct nfs_open_context *ctx,
1414 struct nfs4_state *state, enum open_claim_type4 claim)
1416 struct nfs4_opendata *opendata;
1418 opendata = nfs4_opendata_alloc(ctx->dentry, state->owner, 0, 0,
1419 NULL, NULL, claim, GFP_NOFS);
1420 if (opendata == NULL)
1421 return ERR_PTR(-ENOMEM);
1422 opendata->state = state;
1423 atomic_inc(&state->count);
1427 static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, fmode_t fmode, struct nfs4_state **res)
1429 struct nfs4_state *newstate;
1432 opendata->o_arg.open_flags = 0;
1433 opendata->o_arg.fmode = fmode;
1434 memset(&opendata->o_res, 0, sizeof(opendata->o_res));
1435 memset(&opendata->c_res, 0, sizeof(opendata->c_res));
1436 nfs4_init_opendata_res(opendata);
1437 ret = _nfs4_recover_proc_open(opendata);
1440 newstate = nfs4_opendata_to_nfs4_state(opendata);
1441 if (IS_ERR(newstate))
1442 return PTR_ERR(newstate);
1443 nfs4_close_state(newstate, fmode);
1448 static int nfs4_open_recover(struct nfs4_opendata *opendata, struct nfs4_state *state)
1450 struct nfs4_state *newstate;
1453 /* memory barrier prior to reading state->n_* */
1454 clear_bit(NFS_DELEGATED_STATE, &state->flags);
1455 clear_bit(NFS_OPEN_STATE, &state->flags);
1457 if (state->n_rdwr != 0) {
1458 clear_bit(NFS_O_RDWR_STATE, &state->flags);
1459 ret = nfs4_open_recover_helper(opendata, FMODE_READ|FMODE_WRITE, &newstate);
1462 if (newstate != state)
1465 if (state->n_wronly != 0) {
1466 clear_bit(NFS_O_WRONLY_STATE, &state->flags);
1467 ret = nfs4_open_recover_helper(opendata, FMODE_WRITE, &newstate);
1470 if (newstate != state)
1473 if (state->n_rdonly != 0) {
1474 clear_bit(NFS_O_RDONLY_STATE, &state->flags);
1475 ret = nfs4_open_recover_helper(opendata, FMODE_READ, &newstate);
1478 if (newstate != state)
1482 * We may have performed cached opens for all three recoveries.
1483 * Check if we need to update the current stateid.
1485 if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0 &&
1486 !nfs4_stateid_match(&state->stateid, &state->open_stateid)) {
1487 write_seqlock(&state->seqlock);
1488 if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0)
1489 nfs4_stateid_copy(&state->stateid, &state->open_stateid);
1490 write_sequnlock(&state->seqlock);
1497 * reclaim state on the server after a reboot.
1499 static int _nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state)
1501 struct nfs_delegation *delegation;
1502 struct nfs4_opendata *opendata;
1503 fmode_t delegation_type = 0;
1506 opendata = nfs4_open_recoverdata_alloc(ctx, state,
1507 NFS4_OPEN_CLAIM_PREVIOUS);
1508 if (IS_ERR(opendata))
1509 return PTR_ERR(opendata);
1511 delegation = rcu_dereference(NFS_I(state->inode)->delegation);
1512 if (delegation != NULL && test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags) != 0)
1513 delegation_type = delegation->type;
1515 opendata->o_arg.u.delegation_type = delegation_type;
1516 status = nfs4_open_recover(opendata, state);
1517 nfs4_opendata_put(opendata);
1521 static int nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state)
1523 struct nfs_server *server = NFS_SERVER(state->inode);
1524 struct nfs4_exception exception = { };
1527 err = _nfs4_do_open_reclaim(ctx, state);
1528 trace_nfs4_open_reclaim(ctx, 0, err);
1529 if (nfs4_clear_cap_atomic_open_v1(server, err, &exception))
1531 if (err != -NFS4ERR_DELAY)
1533 nfs4_handle_exception(server, err, &exception);
1534 } while (exception.retry);
1538 static int nfs4_open_reclaim(struct nfs4_state_owner *sp, struct nfs4_state *state)
1540 struct nfs_open_context *ctx;
1543 ctx = nfs4_state_find_open_context(state);
1546 ret = nfs4_do_open_reclaim(ctx, state);
1547 put_nfs_open_context(ctx);
1551 static int nfs4_handle_delegation_recall_error(struct nfs_server *server, struct nfs4_state *state, const nfs4_stateid *stateid, int err)
1555 printk(KERN_ERR "NFS: %s: unhandled error "
1556 "%d.\n", __func__, err);
1561 case -NFS4ERR_BADSESSION:
1562 case -NFS4ERR_BADSLOT:
1563 case -NFS4ERR_BAD_HIGH_SLOT:
1564 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION:
1565 case -NFS4ERR_DEADSESSION:
1566 set_bit(NFS_DELEGATED_STATE, &state->flags);
1567 nfs4_schedule_session_recovery(server->nfs_client->cl_session, err);
1569 case -NFS4ERR_STALE_CLIENTID:
1570 case -NFS4ERR_STALE_STATEID:
1571 set_bit(NFS_DELEGATED_STATE, &state->flags);
1572 case -NFS4ERR_EXPIRED:
1573 /* Don't recall a delegation if it was lost */
1574 nfs4_schedule_lease_recovery(server->nfs_client);
1576 case -NFS4ERR_DELEG_REVOKED:
1577 case -NFS4ERR_ADMIN_REVOKED:
1578 case -NFS4ERR_BAD_STATEID:
1579 case -NFS4ERR_OPENMODE:
1580 nfs_inode_find_state_and_recover(state->inode,
1582 nfs4_schedule_stateid_recovery(server, state);
1584 case -NFS4ERR_DELAY:
1585 case -NFS4ERR_GRACE:
1586 set_bit(NFS_DELEGATED_STATE, &state->flags);
1590 case -NFS4ERR_DENIED:
1591 /* kill_proc(fl->fl_pid, SIGLOST, 1); */
1597 int nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state *state, const nfs4_stateid *stateid)
1599 struct nfs_server *server = NFS_SERVER(state->inode);
1600 struct nfs4_opendata *opendata;
1603 opendata = nfs4_open_recoverdata_alloc(ctx, state,
1604 NFS4_OPEN_CLAIM_DELEG_CUR_FH);
1605 if (IS_ERR(opendata))
1606 return PTR_ERR(opendata);
1607 nfs4_stateid_copy(&opendata->o_arg.u.delegation, stateid);
1608 err = nfs4_open_recover(opendata, state);
1609 nfs4_opendata_put(opendata);
1610 return nfs4_handle_delegation_recall_error(server, state, stateid, err);
1613 static void nfs4_open_confirm_done(struct rpc_task *task, void *calldata)
1615 struct nfs4_opendata *data = calldata;
1617 data->rpc_status = task->tk_status;
1618 if (data->rpc_status == 0) {
1619 nfs4_stateid_copy(&data->o_res.stateid, &data->c_res.stateid);
1620 nfs_confirm_seqid(&data->owner->so_seqid, 0);
1621 renew_lease(data->o_res.server, data->timestamp);
1626 static void nfs4_open_confirm_release(void *calldata)
1628 struct nfs4_opendata *data = calldata;
1629 struct nfs4_state *state = NULL;
1631 /* If this request hasn't been cancelled, do nothing */
1632 if (data->cancelled == 0)
1634 /* In case of error, no cleanup! */
1635 if (!data->rpc_done)
1637 state = nfs4_opendata_to_nfs4_state(data);
1639 nfs4_close_state(state, data->o_arg.fmode);
1641 nfs4_opendata_put(data);
1644 static const struct rpc_call_ops nfs4_open_confirm_ops = {
1645 .rpc_call_done = nfs4_open_confirm_done,
1646 .rpc_release = nfs4_open_confirm_release,
1650 * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata
1652 static int _nfs4_proc_open_confirm(struct nfs4_opendata *data)
1654 struct nfs_server *server = NFS_SERVER(data->dir->d_inode);
1655 struct rpc_task *task;
1656 struct rpc_message msg = {
1657 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_CONFIRM],
1658 .rpc_argp = &data->c_arg,
1659 .rpc_resp = &data->c_res,
1660 .rpc_cred = data->owner->so_cred,
1662 struct rpc_task_setup task_setup_data = {
1663 .rpc_client = server->client,
1664 .rpc_message = &msg,
1665 .callback_ops = &nfs4_open_confirm_ops,
1666 .callback_data = data,
1667 .workqueue = nfsiod_workqueue,
1668 .flags = RPC_TASK_ASYNC,
1672 kref_get(&data->kref);
1674 data->rpc_status = 0;
1675 data->timestamp = jiffies;
1676 task = rpc_run_task(&task_setup_data);
1678 return PTR_ERR(task);
1679 status = nfs4_wait_for_completion_rpc_task(task);
1681 data->cancelled = 1;
1684 status = data->rpc_status;
1689 static void nfs4_open_prepare(struct rpc_task *task, void *calldata)
1691 struct nfs4_opendata *data = calldata;
1692 struct nfs4_state_owner *sp = data->owner;
1693 struct nfs_client *clp = sp->so_server->nfs_client;
1695 if (nfs_wait_on_sequence(data->o_arg.seqid, task) != 0)
1698 * Check if we still need to send an OPEN call, or if we can use
1699 * a delegation instead.
1701 if (data->state != NULL) {
1702 struct nfs_delegation *delegation;
1704 if (can_open_cached(data->state, data->o_arg.fmode, data->o_arg.open_flags))
1707 delegation = rcu_dereference(NFS_I(data->state->inode)->delegation);
1708 if (data->o_arg.claim != NFS4_OPEN_CLAIM_DELEGATE_CUR &&
1709 data->o_arg.claim != NFS4_OPEN_CLAIM_DELEG_CUR_FH &&
1710 can_open_delegated(delegation, data->o_arg.fmode))
1711 goto unlock_no_action;
1714 /* Update client id. */
1715 data->o_arg.clientid = clp->cl_clientid;
1716 switch (data->o_arg.claim) {
1717 case NFS4_OPEN_CLAIM_PREVIOUS:
1718 case NFS4_OPEN_CLAIM_DELEG_CUR_FH:
1719 case NFS4_OPEN_CLAIM_DELEG_PREV_FH:
1720 data->o_arg.open_bitmap = &nfs4_open_noattr_bitmap[0];
1721 case NFS4_OPEN_CLAIM_FH:
1722 task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_NOATTR];
1723 nfs_copy_fh(&data->o_res.fh, data->o_arg.fh);
1725 data->timestamp = jiffies;
1726 if (nfs4_setup_sequence(data->o_arg.server,
1727 &data->o_arg.seq_args,
1728 &data->o_res.seq_res,
1730 nfs_release_seqid(data->o_arg.seqid);
1732 /* Set the create mode (note dependency on the session type) */
1733 data->o_arg.createmode = NFS4_CREATE_UNCHECKED;
1734 if (data->o_arg.open_flags & O_EXCL) {
1735 data->o_arg.createmode = NFS4_CREATE_EXCLUSIVE;
1736 if (nfs4_has_persistent_session(clp))
1737 data->o_arg.createmode = NFS4_CREATE_GUARDED;
1738 else if (clp->cl_mvops->minor_version > 0)
1739 data->o_arg.createmode = NFS4_CREATE_EXCLUSIVE4_1;
1745 task->tk_action = NULL;
1747 nfs4_sequence_done(task, &data->o_res.seq_res);
1750 static void nfs4_open_done(struct rpc_task *task, void *calldata)
1752 struct nfs4_opendata *data = calldata;
1754 data->rpc_status = task->tk_status;
1756 if (!nfs4_sequence_done(task, &data->o_res.seq_res))
1759 if (task->tk_status == 0) {
1760 if (data->o_res.f_attr->valid & NFS_ATTR_FATTR_TYPE) {
1761 switch (data->o_res.f_attr->mode & S_IFMT) {
1765 data->rpc_status = -ELOOP;
1768 data->rpc_status = -EISDIR;
1771 data->rpc_status = -ENOTDIR;
1774 renew_lease(data->o_res.server, data->timestamp);
1775 if (!(data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM))
1776 nfs_confirm_seqid(&data->owner->so_seqid, 0);
1781 static void nfs4_open_release(void *calldata)
1783 struct nfs4_opendata *data = calldata;
1784 struct nfs4_state *state = NULL;
1786 /* If this request hasn't been cancelled, do nothing */
1787 if (data->cancelled == 0)
1789 /* In case of error, no cleanup! */
1790 if (data->rpc_status != 0 || !data->rpc_done)
1792 /* In case we need an open_confirm, no cleanup! */
1793 if (data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM)
1795 state = nfs4_opendata_to_nfs4_state(data);
1797 nfs4_close_state(state, data->o_arg.fmode);
1799 nfs4_opendata_put(data);
1802 static const struct rpc_call_ops nfs4_open_ops = {
1803 .rpc_call_prepare = nfs4_open_prepare,
1804 .rpc_call_done = nfs4_open_done,
1805 .rpc_release = nfs4_open_release,
1808 static int nfs4_run_open_task(struct nfs4_opendata *data, int isrecover)
1810 struct inode *dir = data->dir->d_inode;
1811 struct nfs_server *server = NFS_SERVER(dir);
1812 struct nfs_openargs *o_arg = &data->o_arg;
1813 struct nfs_openres *o_res = &data->o_res;
1814 struct rpc_task *task;
1815 struct rpc_message msg = {
1816 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN],
1819 .rpc_cred = data->owner->so_cred,
1821 struct rpc_task_setup task_setup_data = {
1822 .rpc_client = server->client,
1823 .rpc_message = &msg,
1824 .callback_ops = &nfs4_open_ops,
1825 .callback_data = data,
1826 .workqueue = nfsiod_workqueue,
1827 .flags = RPC_TASK_ASYNC,
1831 nfs4_init_sequence(&o_arg->seq_args, &o_res->seq_res, 1);
1832 kref_get(&data->kref);
1834 data->rpc_status = 0;
1835 data->cancelled = 0;
1836 data->is_recover = 0;
1838 nfs4_set_sequence_privileged(&o_arg->seq_args);
1839 data->is_recover = 1;
1841 task = rpc_run_task(&task_setup_data);
1843 return PTR_ERR(task);
1844 status = nfs4_wait_for_completion_rpc_task(task);
1846 data->cancelled = 1;
1849 status = data->rpc_status;
1855 static int _nfs4_recover_proc_open(struct nfs4_opendata *data)
1857 struct inode *dir = data->dir->d_inode;
1858 struct nfs_openres *o_res = &data->o_res;
1861 status = nfs4_run_open_task(data, 1);
1862 if (status != 0 || !data->rpc_done)
1865 nfs_fattr_map_and_free_names(NFS_SERVER(dir), &data->f_attr);
1867 if (o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) {
1868 status = _nfs4_proc_open_confirm(data);
1876 static int nfs4_opendata_access(struct rpc_cred *cred,
1877 struct nfs4_opendata *opendata,
1878 struct nfs4_state *state, fmode_t fmode,
1881 struct nfs_access_entry cache;
1884 /* access call failed or for some reason the server doesn't
1885 * support any access modes -- defer access call until later */
1886 if (opendata->o_res.access_supported == 0)
1890 /* don't check MAY_WRITE - a newly created file may not have
1891 * write mode bits, but POSIX allows the creating process to write.
1892 * use openflags to check for exec, because fmode won't
1893 * always have FMODE_EXEC set when file open for exec. */
1894 if (openflags & __FMODE_EXEC) {
1895 /* ONLY check for exec rights */
1897 } else if (fmode & FMODE_READ)
1901 cache.jiffies = jiffies;
1902 nfs_access_set_mask(&cache, opendata->o_res.access_result);
1903 nfs_access_add_cache(state->inode, &cache);
1905 if ((mask & ~cache.mask & (MAY_READ | MAY_EXEC)) == 0)
1908 /* even though OPEN succeeded, access is denied. Close the file */
1909 nfs4_close_state(state, fmode);
1914 * Note: On error, nfs4_proc_open will free the struct nfs4_opendata
1916 static int _nfs4_proc_open(struct nfs4_opendata *data)
1918 struct inode *dir = data->dir->d_inode;
1919 struct nfs_server *server = NFS_SERVER(dir);
1920 struct nfs_openargs *o_arg = &data->o_arg;
1921 struct nfs_openres *o_res = &data->o_res;
1924 status = nfs4_run_open_task(data, 0);
1925 if (!data->rpc_done)
1928 if (status == -NFS4ERR_BADNAME &&
1929 !(o_arg->open_flags & O_CREAT))
1934 nfs_fattr_map_and_free_names(server, &data->f_attr);
1936 if (o_arg->open_flags & O_CREAT)
1937 update_changeattr(dir, &o_res->cinfo);
1938 if ((o_res->rflags & NFS4_OPEN_RESULT_LOCKTYPE_POSIX) == 0)
1939 server->caps &= ~NFS_CAP_POSIX_LOCK;
1940 if(o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) {
1941 status = _nfs4_proc_open_confirm(data);
1945 if (!(o_res->f_attr->valid & NFS_ATTR_FATTR))
1946 _nfs4_proc_getattr(server, &o_res->fh, o_res->f_attr, o_res->f_label);
1950 static int nfs4_recover_expired_lease(struct nfs_server *server)
1952 return nfs4_client_recover_expired_lease(server->nfs_client);
1957 * reclaim state on the server after a network partition.
1958 * Assumes caller holds the appropriate lock
1960 static int _nfs4_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state)
1962 struct nfs4_opendata *opendata;
1965 opendata = nfs4_open_recoverdata_alloc(ctx, state,
1966 NFS4_OPEN_CLAIM_FH);
1967 if (IS_ERR(opendata))
1968 return PTR_ERR(opendata);
1969 ret = nfs4_open_recover(opendata, state);
1971 d_drop(ctx->dentry);
1972 nfs4_opendata_put(opendata);
1976 static int nfs4_do_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state)
1978 struct nfs_server *server = NFS_SERVER(state->inode);
1979 struct nfs4_exception exception = { };
1983 err = _nfs4_open_expired(ctx, state);
1984 trace_nfs4_open_expired(ctx, 0, err);
1985 if (nfs4_clear_cap_atomic_open_v1(server, err, &exception))
1990 case -NFS4ERR_GRACE:
1991 case -NFS4ERR_DELAY:
1992 nfs4_handle_exception(server, err, &exception);
1995 } while (exception.retry);
2000 static int nfs4_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state)
2002 struct nfs_open_context *ctx;
2005 ctx = nfs4_state_find_open_context(state);
2008 ret = nfs4_do_open_expired(ctx, state);
2009 put_nfs_open_context(ctx);
2013 #if defined(CONFIG_NFS_V4_1)
2014 static void nfs41_clear_delegation_stateid(struct nfs4_state *state)
2016 struct nfs_server *server = NFS_SERVER(state->inode);
2017 nfs4_stateid *stateid = &state->stateid;
2018 struct nfs_delegation *delegation;
2019 struct rpc_cred *cred = NULL;
2020 int status = -NFS4ERR_BAD_STATEID;
2022 /* If a state reset has been done, test_stateid is unneeded */
2023 if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0)
2026 /* Get the delegation credential for use by test/free_stateid */
2028 delegation = rcu_dereference(NFS_I(state->inode)->delegation);
2029 if (delegation != NULL &&
2030 nfs4_stateid_match(&delegation->stateid, stateid)) {
2031 cred = get_rpccred(delegation->cred);
2033 status = nfs41_test_stateid(server, stateid, cred);
2034 trace_nfs4_test_delegation_stateid(state, NULL, status);
2038 if (status != NFS_OK) {
2039 /* Free the stateid unless the server explicitly
2040 * informs us the stateid is unrecognized. */
2041 if (status != -NFS4ERR_BAD_STATEID)
2042 nfs41_free_stateid(server, stateid, cred);
2043 nfs_remove_bad_delegation(state->inode);
2045 write_seqlock(&state->seqlock);
2046 nfs4_stateid_copy(&state->stateid, &state->open_stateid);
2047 write_sequnlock(&state->seqlock);
2048 clear_bit(NFS_DELEGATED_STATE, &state->flags);
2056 * nfs41_check_open_stateid - possibly free an open stateid
2058 * @state: NFSv4 state for an inode
2060 * Returns NFS_OK if recovery for this stateid is now finished.
2061 * Otherwise a negative NFS4ERR value is returned.
2063 static int nfs41_check_open_stateid(struct nfs4_state *state)
2065 struct nfs_server *server = NFS_SERVER(state->inode);
2066 nfs4_stateid *stateid = &state->open_stateid;
2067 struct rpc_cred *cred = state->owner->so_cred;
2070 /* If a state reset has been done, test_stateid is unneeded */
2071 if ((test_bit(NFS_O_RDONLY_STATE, &state->flags) == 0) &&
2072 (test_bit(NFS_O_WRONLY_STATE, &state->flags) == 0) &&
2073 (test_bit(NFS_O_RDWR_STATE, &state->flags) == 0))
2074 return -NFS4ERR_BAD_STATEID;
2076 status = nfs41_test_stateid(server, stateid, cred);
2077 trace_nfs4_test_open_stateid(state, NULL, status);
2078 if (status != NFS_OK) {
2079 /* Free the stateid unless the server explicitly
2080 * informs us the stateid is unrecognized. */
2081 if (status != -NFS4ERR_BAD_STATEID)
2082 nfs41_free_stateid(server, stateid, cred);
2084 clear_bit(NFS_O_RDONLY_STATE, &state->flags);
2085 clear_bit(NFS_O_WRONLY_STATE, &state->flags);
2086 clear_bit(NFS_O_RDWR_STATE, &state->flags);
2087 clear_bit(NFS_OPEN_STATE, &state->flags);
2092 static int nfs41_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state)
2096 nfs41_clear_delegation_stateid(state);
2097 status = nfs41_check_open_stateid(state);
2098 if (status != NFS_OK)
2099 status = nfs4_open_expired(sp, state);
2105 * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-*
2106 * fields corresponding to attributes that were used to store the verifier.
2107 * Make sure we clobber those fields in the later setattr call
2109 static inline void nfs4_exclusive_attrset(struct nfs4_opendata *opendata, struct iattr *sattr)
2111 if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_ACCESS) &&
2112 !(sattr->ia_valid & ATTR_ATIME_SET))
2113 sattr->ia_valid |= ATTR_ATIME;
2115 if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_MODIFY) &&
2116 !(sattr->ia_valid & ATTR_MTIME_SET))
2117 sattr->ia_valid |= ATTR_MTIME;
2120 static int _nfs4_open_and_get_state(struct nfs4_opendata *opendata,
2123 struct nfs_open_context *ctx)
2125 struct nfs4_state_owner *sp = opendata->owner;
2126 struct nfs_server *server = sp->so_server;
2127 struct dentry *dentry;
2128 struct nfs4_state *state;
2132 seq = raw_seqcount_begin(&sp->so_reclaim_seqcount);
2134 ret = _nfs4_proc_open(opendata);
2138 state = nfs4_opendata_to_nfs4_state(opendata);
2139 ret = PTR_ERR(state);
2142 if (server->caps & NFS_CAP_POSIX_LOCK)
2143 set_bit(NFS_STATE_POSIX_LOCKS, &state->flags);
2145 dentry = opendata->dentry;
2146 if (dentry->d_inode == NULL) {
2147 /* FIXME: Is this d_drop() ever needed? */
2149 dentry = d_add_unique(dentry, igrab(state->inode));
2150 if (dentry == NULL) {
2151 dentry = opendata->dentry;
2152 } else if (dentry != ctx->dentry) {
2154 ctx->dentry = dget(dentry);
2156 nfs_set_verifier(dentry,
2157 nfs_save_change_attribute(opendata->dir->d_inode));
2160 ret = nfs4_opendata_access(sp->so_cred, opendata, state, fmode, flags);
2165 if (dentry->d_inode == state->inode) {
2166 nfs_inode_attach_open_context(ctx);
2167 if (read_seqcount_retry(&sp->so_reclaim_seqcount, seq))
2168 nfs4_schedule_stateid_recovery(server, state);
2175 * Returns a referenced nfs4_state
2177 static int _nfs4_do_open(struct inode *dir,
2178 struct nfs_open_context *ctx,
2180 struct iattr *sattr,
2181 struct nfs4_label *label)
2183 struct nfs4_state_owner *sp;
2184 struct nfs4_state *state = NULL;
2185 struct nfs_server *server = NFS_SERVER(dir);
2186 struct nfs4_opendata *opendata;
2187 struct dentry *dentry = ctx->dentry;
2188 struct rpc_cred *cred = ctx->cred;
2189 struct nfs4_threshold **ctx_th = &ctx->mdsthreshold;
2190 fmode_t fmode = ctx->mode & (FMODE_READ|FMODE_WRITE|FMODE_EXEC);
2191 enum open_claim_type4 claim = NFS4_OPEN_CLAIM_NULL;
2192 struct nfs4_label *olabel = NULL;
2195 /* Protect against reboot recovery conflicts */
2197 sp = nfs4_get_state_owner(server, cred, GFP_KERNEL);
2199 dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n");
2202 status = nfs4_recover_expired_lease(server);
2204 goto err_put_state_owner;
2205 if (dentry->d_inode != NULL)
2206 nfs4_return_incompatible_delegation(dentry->d_inode, fmode);
2208 if (dentry->d_inode)
2209 claim = NFS4_OPEN_CLAIM_FH;
2210 opendata = nfs4_opendata_alloc(dentry, sp, fmode, flags, sattr,
2211 label, claim, GFP_KERNEL);
2212 if (opendata == NULL)
2213 goto err_put_state_owner;
2216 olabel = nfs4_label_alloc(server, GFP_KERNEL);
2217 if (IS_ERR(olabel)) {
2218 status = PTR_ERR(olabel);
2219 goto err_opendata_put;
2223 if (ctx_th && server->attr_bitmask[2] & FATTR4_WORD2_MDSTHRESHOLD) {
2224 opendata->f_attr.mdsthreshold = pnfs_mdsthreshold_alloc();
2225 if (!opendata->f_attr.mdsthreshold)
2226 goto err_free_label;
2227 opendata->o_arg.open_bitmap = &nfs4_pnfs_open_bitmap[0];
2229 if (dentry->d_inode != NULL)
2230 opendata->state = nfs4_get_open_state(dentry->d_inode, sp);
2232 status = _nfs4_open_and_get_state(opendata, fmode, flags, ctx);
2234 goto err_free_label;
2237 if ((opendata->o_arg.open_flags & O_EXCL) &&
2238 (opendata->o_arg.createmode != NFS4_CREATE_GUARDED)) {
2239 nfs4_exclusive_attrset(opendata, sattr);
2241 nfs_fattr_init(opendata->o_res.f_attr);
2242 status = nfs4_do_setattr(state->inode, cred,
2243 opendata->o_res.f_attr, sattr,
2244 state, label, olabel);
2246 nfs_setattr_update_inode(state->inode, sattr);
2247 nfs_post_op_update_inode(state->inode, opendata->o_res.f_attr);
2248 nfs_setsecurity(state->inode, opendata->o_res.f_attr, olabel);
2252 if (pnfs_use_threshold(ctx_th, opendata->f_attr.mdsthreshold, server))
2253 *ctx_th = opendata->f_attr.mdsthreshold;
2255 kfree(opendata->f_attr.mdsthreshold);
2256 opendata->f_attr.mdsthreshold = NULL;
2258 nfs4_label_free(olabel);
2260 nfs4_opendata_put(opendata);
2261 nfs4_put_state_owner(sp);
2264 nfs4_label_free(olabel);
2266 kfree(opendata->f_attr.mdsthreshold);
2267 nfs4_opendata_put(opendata);
2268 err_put_state_owner:
2269 nfs4_put_state_owner(sp);
2275 static struct nfs4_state *nfs4_do_open(struct inode *dir,
2276 struct nfs_open_context *ctx,
2278 struct iattr *sattr,
2279 struct nfs4_label *label)
2281 struct nfs_server *server = NFS_SERVER(dir);
2282 struct nfs4_exception exception = { };
2283 struct nfs4_state *res;
2287 status = _nfs4_do_open(dir, ctx, flags, sattr, label);
2289 trace_nfs4_open_file(ctx, flags, status);
2292 /* NOTE: BAD_SEQID means the server and client disagree about the
2293 * book-keeping w.r.t. state-changing operations
2294 * (OPEN/CLOSE/LOCK/LOCKU...)
2295 * It is actually a sign of a bug on the client or on the server.
2297 * If we receive a BAD_SEQID error in the particular case of
2298 * doing an OPEN, we assume that nfs_increment_open_seqid() will
2299 * have unhashed the old state_owner for us, and that we can
2300 * therefore safely retry using a new one. We should still warn
2301 * the user though...
2303 if (status == -NFS4ERR_BAD_SEQID) {
2304 pr_warn_ratelimited("NFS: v4 server %s "
2305 " returned a bad sequence-id error!\n",
2306 NFS_SERVER(dir)->nfs_client->cl_hostname);
2307 exception.retry = 1;
2311 * BAD_STATEID on OPEN means that the server cancelled our
2312 * state before it received the OPEN_CONFIRM.
2313 * Recover by retrying the request as per the discussion
2314 * on Page 181 of RFC3530.
2316 if (status == -NFS4ERR_BAD_STATEID) {
2317 exception.retry = 1;
2320 if (status == -EAGAIN) {
2321 /* We must have found a delegation */
2322 exception.retry = 1;
2325 if (nfs4_clear_cap_atomic_open_v1(server, status, &exception))
2327 res = ERR_PTR(nfs4_handle_exception(server,
2328 status, &exception));
2329 } while (exception.retry);
2333 static int _nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred,
2334 struct nfs_fattr *fattr, struct iattr *sattr,
2335 struct nfs4_state *state, struct nfs4_label *ilabel,
2336 struct nfs4_label *olabel)
2338 struct nfs_server *server = NFS_SERVER(inode);
2339 struct nfs_setattrargs arg = {
2340 .fh = NFS_FH(inode),
2343 .bitmask = server->attr_bitmask,
2346 struct nfs_setattrres res = {
2351 struct rpc_message msg = {
2352 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETATTR],
2357 unsigned long timestamp = jiffies;
2362 arg.bitmask = nfs4_bitmask(server, ilabel);
2364 arg.bitmask = nfs4_bitmask(server, olabel);
2366 nfs_fattr_init(fattr);
2368 /* Servers should only apply open mode checks for file size changes */
2369 truncate = (sattr->ia_valid & ATTR_SIZE) ? true : false;
2370 fmode = truncate ? FMODE_WRITE : FMODE_READ;
2372 if (nfs4_copy_delegation_stateid(&arg.stateid, inode, fmode)) {
2373 /* Use that stateid */
2374 } else if (truncate && state != NULL && nfs4_valid_open_stateid(state)) {
2375 struct nfs_lockowner lockowner = {
2376 .l_owner = current->files,
2377 .l_pid = current->tgid,
2379 nfs4_select_rw_stateid(&arg.stateid, state, FMODE_WRITE,
2382 nfs4_stateid_copy(&arg.stateid, &zero_stateid);
2384 status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1);
2385 if (status == 0 && state != NULL)
2386 renew_lease(server, timestamp);
2390 static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred,
2391 struct nfs_fattr *fattr, struct iattr *sattr,
2392 struct nfs4_state *state, struct nfs4_label *ilabel,
2393 struct nfs4_label *olabel)
2395 struct nfs_server *server = NFS_SERVER(inode);
2396 struct nfs4_exception exception = {
2402 err = _nfs4_do_setattr(inode, cred, fattr, sattr, state, ilabel, olabel);
2403 trace_nfs4_setattr(inode, err);
2405 case -NFS4ERR_OPENMODE:
2406 if (!(sattr->ia_valid & ATTR_SIZE)) {
2407 pr_warn_once("NFSv4: server %s is incorrectly "
2408 "applying open mode checks to "
2409 "a SETATTR that is not "
2410 "changing file size.\n",
2411 server->nfs_client->cl_hostname);
2413 if (state && !(state->state & FMODE_WRITE)) {
2415 if (sattr->ia_valid & ATTR_OPEN)
2420 err = nfs4_handle_exception(server, err, &exception);
2421 } while (exception.retry);
2426 struct nfs4_closedata {
2427 struct inode *inode;
2428 struct nfs4_state *state;
2429 struct nfs_closeargs arg;
2430 struct nfs_closeres res;
2431 struct nfs_fattr fattr;
2432 unsigned long timestamp;
2437 static void nfs4_free_closedata(void *data)
2439 struct nfs4_closedata *calldata = data;
2440 struct nfs4_state_owner *sp = calldata->state->owner;
2441 struct super_block *sb = calldata->state->inode->i_sb;
2444 pnfs_roc_release(calldata->state->inode);
2445 nfs4_put_open_state(calldata->state);
2446 nfs_free_seqid(calldata->arg.seqid);
2447 nfs4_put_state_owner(sp);
2448 nfs_sb_deactive(sb);
2452 static void nfs4_close_clear_stateid_flags(struct nfs4_state *state,
2455 spin_lock(&state->owner->so_lock);
2456 clear_bit(NFS_O_RDWR_STATE, &state->flags);
2457 switch (fmode & (FMODE_READ|FMODE_WRITE)) {
2459 clear_bit(NFS_O_RDONLY_STATE, &state->flags);
2462 clear_bit(NFS_O_WRONLY_STATE, &state->flags);
2465 clear_bit(NFS_O_RDONLY_STATE, &state->flags);
2466 clear_bit(NFS_O_WRONLY_STATE, &state->flags);
2467 clear_bit(NFS_OPEN_STATE, &state->flags);
2469 spin_unlock(&state->owner->so_lock);
2472 static void nfs4_close_done(struct rpc_task *task, void *data)
2474 struct nfs4_closedata *calldata = data;
2475 struct nfs4_state *state = calldata->state;
2476 struct nfs_server *server = NFS_SERVER(calldata->inode);
2478 dprintk("%s: begin!\n", __func__);
2479 if (!nfs4_sequence_done(task, &calldata->res.seq_res))
2481 trace_nfs4_close(state, &calldata->arg, &calldata->res, task->tk_status);
2482 /* hmm. we are done with the inode, and in the process of freeing
2483 * the state_owner. we keep this around to process errors
2485 switch (task->tk_status) {
2488 pnfs_roc_set_barrier(state->inode,
2489 calldata->roc_barrier);
2490 nfs_set_open_stateid(state, &calldata->res.stateid, 0);
2491 renew_lease(server, calldata->timestamp);
2492 nfs4_close_clear_stateid_flags(state,
2493 calldata->arg.fmode);
2495 case -NFS4ERR_STALE_STATEID:
2496 case -NFS4ERR_OLD_STATEID:
2497 case -NFS4ERR_BAD_STATEID:
2498 case -NFS4ERR_EXPIRED:
2499 if (calldata->arg.fmode == 0)
2502 if (nfs4_async_handle_error(task, server, state) == -EAGAIN)
2503 rpc_restart_call_prepare(task);
2505 nfs_release_seqid(calldata->arg.seqid);
2506 nfs_refresh_inode(calldata->inode, calldata->res.fattr);
2507 dprintk("%s: done, ret = %d!\n", __func__, task->tk_status);
2510 static void nfs4_close_prepare(struct rpc_task *task, void *data)
2512 struct nfs4_closedata *calldata = data;
2513 struct nfs4_state *state = calldata->state;
2514 struct inode *inode = calldata->inode;
2517 dprintk("%s: begin!\n", __func__);
2518 if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0)
2521 task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE];
2522 calldata->arg.fmode = FMODE_READ|FMODE_WRITE;
2523 spin_lock(&state->owner->so_lock);
2524 /* Calculate the change in open mode */
2525 if (state->n_rdwr == 0) {
2526 if (state->n_rdonly == 0) {
2527 call_close |= test_bit(NFS_O_RDONLY_STATE, &state->flags);
2528 call_close |= test_bit(NFS_O_RDWR_STATE, &state->flags);
2529 calldata->arg.fmode &= ~FMODE_READ;
2531 if (state->n_wronly == 0) {
2532 call_close |= test_bit(NFS_O_WRONLY_STATE, &state->flags);
2533 call_close |= test_bit(NFS_O_RDWR_STATE, &state->flags);
2534 calldata->arg.fmode &= ~FMODE_WRITE;
2537 if (!nfs4_valid_open_stateid(state))
2539 spin_unlock(&state->owner->so_lock);
2542 /* Note: exit _without_ calling nfs4_close_done */
2546 if (calldata->arg.fmode == 0) {
2547 task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE];
2548 if (calldata->roc &&
2549 pnfs_roc_drain(inode, &calldata->roc_barrier, task)) {
2550 nfs_release_seqid(calldata->arg.seqid);
2555 nfs_fattr_init(calldata->res.fattr);
2556 calldata->timestamp = jiffies;
2557 if (nfs4_setup_sequence(NFS_SERVER(inode),
2558 &calldata->arg.seq_args,
2559 &calldata->res.seq_res,
2561 nfs_release_seqid(calldata->arg.seqid);
2562 dprintk("%s: done!\n", __func__);
2565 task->tk_action = NULL;
2567 nfs4_sequence_done(task, &calldata->res.seq_res);
2570 static const struct rpc_call_ops nfs4_close_ops = {
2571 .rpc_call_prepare = nfs4_close_prepare,
2572 .rpc_call_done = nfs4_close_done,
2573 .rpc_release = nfs4_free_closedata,
2577 * It is possible for data to be read/written from a mem-mapped file
2578 * after the sys_close call (which hits the vfs layer as a flush).
2579 * This means that we can't safely call nfsv4 close on a file until
2580 * the inode is cleared. This in turn means that we are not good
2581 * NFSv4 citizens - we do not indicate to the server to update the file's
2582 * share state even when we are done with one of the three share
2583 * stateid's in the inode.
2585 * NOTE: Caller must be holding the sp->so_owner semaphore!
2587 int nfs4_do_close(struct nfs4_state *state, gfp_t gfp_mask, int wait)
2589 struct nfs_server *server = NFS_SERVER(state->inode);
2590 struct nfs4_closedata *calldata;
2591 struct nfs4_state_owner *sp = state->owner;
2592 struct rpc_task *task;
2593 struct rpc_message msg = {
2594 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE],
2595 .rpc_cred = state->owner->so_cred,
2597 struct rpc_task_setup task_setup_data = {
2598 .rpc_client = server->client,
2599 .rpc_message = &msg,
2600 .callback_ops = &nfs4_close_ops,
2601 .workqueue = nfsiod_workqueue,
2602 .flags = RPC_TASK_ASYNC,
2604 int status = -ENOMEM;
2606 calldata = kzalloc(sizeof(*calldata), gfp_mask);
2607 if (calldata == NULL)
2609 nfs4_init_sequence(&calldata->arg.seq_args, &calldata->res.seq_res, 1);
2610 calldata->inode = state->inode;
2611 calldata->state = state;
2612 calldata->arg.fh = NFS_FH(state->inode);
2613 calldata->arg.stateid = &state->open_stateid;
2614 /* Serialization for the sequence id */
2615 calldata->arg.seqid = nfs_alloc_seqid(&state->owner->so_seqid, gfp_mask);
2616 if (calldata->arg.seqid == NULL)
2617 goto out_free_calldata;
2618 calldata->arg.fmode = 0;
2619 calldata->arg.bitmask = server->cache_consistency_bitmask;
2620 calldata->res.fattr = &calldata->fattr;
2621 calldata->res.seqid = calldata->arg.seqid;
2622 calldata->res.server = server;
2623 calldata->roc = pnfs_roc(state->inode);
2624 nfs_sb_active(calldata->inode->i_sb);
2626 msg.rpc_argp = &calldata->arg;
2627 msg.rpc_resp = &calldata->res;
2628 task_setup_data.callback_data = calldata;
2629 task = rpc_run_task(&task_setup_data);
2631 return PTR_ERR(task);
2634 status = rpc_wait_for_completion_task(task);
2640 nfs4_put_open_state(state);
2641 nfs4_put_state_owner(sp);
2645 static struct inode *
2646 nfs4_atomic_open(struct inode *dir, struct nfs_open_context *ctx, int open_flags, struct iattr *attr)
2648 struct nfs4_state *state;
2649 struct nfs4_label l = {0, 0, 0, NULL}, *label = NULL;
2651 label = nfs4_label_init_security(dir, ctx->dentry, attr, &l);
2653 /* Protect against concurrent sillydeletes */
2654 state = nfs4_do_open(dir, ctx, open_flags, attr, label);
2656 nfs4_label_release_security(label);
2659 return ERR_CAST(state);
2660 return state->inode;
2663 static void nfs4_close_context(struct nfs_open_context *ctx, int is_sync)
2665 if (ctx->state == NULL)
2668 nfs4_close_sync(ctx->state, ctx->mode);
2670 nfs4_close_state(ctx->state, ctx->mode);
2673 static int _nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle)
2675 struct nfs4_server_caps_arg args = {
2678 struct nfs4_server_caps_res res = {};
2679 struct rpc_message msg = {
2680 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SERVER_CAPS],
2686 status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0);
2688 memcpy(server->attr_bitmask, res.attr_bitmask, sizeof(server->attr_bitmask));
2689 server->caps &= ~(NFS_CAP_ACLS|NFS_CAP_HARDLINKS|
2690 NFS_CAP_SYMLINKS|NFS_CAP_FILEID|
2691 NFS_CAP_MODE|NFS_CAP_NLINK|NFS_CAP_OWNER|
2692 NFS_CAP_OWNER_GROUP|NFS_CAP_ATIME|
2693 NFS_CAP_CTIME|NFS_CAP_MTIME);
2694 if (res.attr_bitmask[0] & FATTR4_WORD0_ACL)
2695 server->caps |= NFS_CAP_ACLS;
2696 if (res.has_links != 0)
2697 server->caps |= NFS_CAP_HARDLINKS;
2698 if (res.has_symlinks != 0)
2699 server->caps |= NFS_CAP_SYMLINKS;
2700 if (res.attr_bitmask[0] & FATTR4_WORD0_FILEID)
2701 server->caps |= NFS_CAP_FILEID;
2702 if (res.attr_bitmask[1] & FATTR4_WORD1_MODE)
2703 server->caps |= NFS_CAP_MODE;
2704 if (res.attr_bitmask[1] & FATTR4_WORD1_NUMLINKS)
2705 server->caps |= NFS_CAP_NLINK;
2706 if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER)
2707 server->caps |= NFS_CAP_OWNER;
2708 if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER_GROUP)
2709 server->caps |= NFS_CAP_OWNER_GROUP;
2710 if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_ACCESS)
2711 server->caps |= NFS_CAP_ATIME;
2712 if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_METADATA)
2713 server->caps |= NFS_CAP_CTIME;
2714 if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_MODIFY)
2715 server->caps |= NFS_CAP_MTIME;
2716 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
2717 if (res.attr_bitmask[2] & FATTR4_WORD2_SECURITY_LABEL)
2718 server->caps |= NFS_CAP_SECURITY_LABEL;
2720 memcpy(server->attr_bitmask_nl, res.attr_bitmask,
2721 sizeof(server->attr_bitmask));
2723 if (server->caps & NFS_CAP_SECURITY_LABEL) {
2724 server->attr_bitmask_nl[2] &= ~FATTR4_WORD2_SECURITY_LABEL;
2725 res.attr_bitmask[2] &= ~FATTR4_WORD2_SECURITY_LABEL;
2727 memcpy(server->cache_consistency_bitmask, res.attr_bitmask, sizeof(server->cache_consistency_bitmask));
2728 server->cache_consistency_bitmask[0] &= FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE;
2729 server->cache_consistency_bitmask[1] &= FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY;
2730 server->acl_bitmask = res.acl_bitmask;
2731 server->fh_expire_type = res.fh_expire_type;
2737 int nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle)
2739 struct nfs4_exception exception = { };
2742 err = nfs4_handle_exception(server,
2743 _nfs4_server_capabilities(server, fhandle),
2745 } while (exception.retry);
2749 static int _nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle,
2750 struct nfs_fsinfo *info)
2753 struct nfs4_lookup_root_arg args = {
2756 struct nfs4_lookup_res res = {
2758 .fattr = info->fattr,
2761 struct rpc_message msg = {
2762 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP_ROOT],
2767 bitmask[0] = nfs4_fattr_bitmap[0];
2768 bitmask[1] = nfs4_fattr_bitmap[1];
2770 * Process the label in the upcoming getfattr
2772 bitmask[2] = nfs4_fattr_bitmap[2] & ~FATTR4_WORD2_SECURITY_LABEL;
2774 nfs_fattr_init(info->fattr);
2775 return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0);
2778 static int nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle,
2779 struct nfs_fsinfo *info)
2781 struct nfs4_exception exception = { };
2784 err = _nfs4_lookup_root(server, fhandle, info);
2785 trace_nfs4_lookup_root(server, fhandle, info->fattr, err);
2788 case -NFS4ERR_WRONGSEC:
2791 err = nfs4_handle_exception(server, err, &exception);
2793 } while (exception.retry);
2798 static int nfs4_lookup_root_sec(struct nfs_server *server, struct nfs_fh *fhandle,
2799 struct nfs_fsinfo *info, rpc_authflavor_t flavor)
2801 struct rpc_auth_create_args auth_args = {
2802 .pseudoflavor = flavor,
2804 struct rpc_auth *auth;
2807 auth = rpcauth_create(&auth_args, server->client);
2812 ret = nfs4_lookup_root(server, fhandle, info);
2818 * Retry pseudoroot lookup with various security flavors. We do this when:
2820 * NFSv4.0: the PUTROOTFH operation returns NFS4ERR_WRONGSEC
2821 * NFSv4.1: the server does not support the SECINFO_NO_NAME operation
2823 * Returns zero on success, or a negative NFS4ERR value, or a
2824 * negative errno value.
2826 static int nfs4_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle,
2827 struct nfs_fsinfo *info)
2829 /* Per 3530bis 15.33.5 */
2830 static const rpc_authflavor_t flav_array[] = {
2834 RPC_AUTH_UNIX, /* courtesy */
2837 int status = -EPERM;
2840 for (i = 0; i < ARRAY_SIZE(flav_array); i++) {
2841 status = nfs4_lookup_root_sec(server, fhandle, info, flav_array[i]);
2842 if (status == -NFS4ERR_WRONGSEC || status == -EACCES)
2848 * -EACCESS could mean that the user doesn't have correct permissions
2849 * to access the mount. It could also mean that we tried to mount
2850 * with a gss auth flavor, but rpc.gssd isn't running. Either way,
2851 * existing mount programs don't handle -EACCES very well so it should
2852 * be mapped to -EPERM instead.
2854 if (status == -EACCES)
2859 static int nfs4_do_find_root_sec(struct nfs_server *server,
2860 struct nfs_fh *fhandle, struct nfs_fsinfo *info)
2862 int mv = server->nfs_client->cl_minorversion;
2863 return nfs_v4_minor_ops[mv]->find_root_sec(server, fhandle, info);
2867 * nfs4_proc_get_rootfh - get file handle for server's pseudoroot
2868 * @server: initialized nfs_server handle
2869 * @fhandle: we fill in the pseudo-fs root file handle
2870 * @info: we fill in an FSINFO struct
2872 * Returns zero on success, or a negative errno.
2874 int nfs4_proc_get_rootfh(struct nfs_server *server, struct nfs_fh *fhandle,
2875 struct nfs_fsinfo *info)
2879 status = nfs4_lookup_root(server, fhandle, info);
2880 if ((status == -NFS4ERR_WRONGSEC) &&
2881 !(server->flags & NFS_MOUNT_SECFLAVOUR))
2882 status = nfs4_do_find_root_sec(server, fhandle, info);
2885 status = nfs4_server_capabilities(server, fhandle);
2887 status = nfs4_do_fsinfo(server, fhandle, info);
2889 return nfs4_map_errors(status);
2892 static int nfs4_proc_get_root(struct nfs_server *server, struct nfs_fh *mntfh,
2893 struct nfs_fsinfo *info)
2896 struct nfs_fattr *fattr = info->fattr;
2897 struct nfs4_label *label = NULL;
2899 error = nfs4_server_capabilities(server, mntfh);
2901 dprintk("nfs4_get_root: getcaps error = %d\n", -error);
2905 label = nfs4_label_alloc(server, GFP_KERNEL);
2907 return PTR_ERR(label);
2909 error = nfs4_proc_getattr(server, mntfh, fattr, label);
2911 dprintk("nfs4_get_root: getattr error = %d\n", -error);
2912 goto err_free_label;
2915 if (fattr->valid & NFS_ATTR_FATTR_FSID &&
2916 !nfs_fsid_equal(&server->fsid, &fattr->fsid))
2917 memcpy(&server->fsid, &fattr->fsid, sizeof(server->fsid));
2920 nfs4_label_free(label);
2926 * Get locations and (maybe) other attributes of a referral.
2927 * Note that we'll actually follow the referral later when
2928 * we detect fsid mismatch in inode revalidation
2930 static int nfs4_get_referral(struct rpc_clnt *client, struct inode *dir,
2931 const struct qstr *name, struct nfs_fattr *fattr,
2932 struct nfs_fh *fhandle)
2934 int status = -ENOMEM;
2935 struct page *page = NULL;
2936 struct nfs4_fs_locations *locations = NULL;
2938 page = alloc_page(GFP_KERNEL);
2941 locations = kmalloc(sizeof(struct nfs4_fs_locations), GFP_KERNEL);
2942 if (locations == NULL)
2945 status = nfs4_proc_fs_locations(client, dir, name, locations, page);
2948 /* Make sure server returned a different fsid for the referral */
2949 if (nfs_fsid_equal(&NFS_SERVER(dir)->fsid, &locations->fattr.fsid)) {
2950 dprintk("%s: server did not return a different fsid for"
2951 " a referral at %s\n", __func__, name->name);
2955 /* Fixup attributes for the nfs_lookup() call to nfs_fhget() */
2956 nfs_fixup_referral_attributes(&locations->fattr);
2958 /* replace the lookup nfs_fattr with the locations nfs_fattr */
2959 memcpy(fattr, &locations->fattr, sizeof(struct nfs_fattr));
2960 memset(fhandle, 0, sizeof(struct nfs_fh));
2968 static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle,
2969 struct nfs_fattr *fattr, struct nfs4_label *label)
2971 struct nfs4_getattr_arg args = {
2973 .bitmask = server->attr_bitmask,
2975 struct nfs4_getattr_res res = {
2980 struct rpc_message msg = {
2981 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETATTR],
2986 args.bitmask = nfs4_bitmask(server, label);
2988 nfs_fattr_init(fattr);
2989 return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0);
2992 static int nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle,
2993 struct nfs_fattr *fattr, struct nfs4_label *label)
2995 struct nfs4_exception exception = { };
2998 err = _nfs4_proc_getattr(server, fhandle, fattr, label);
2999 trace_nfs4_getattr(server, fhandle, fattr, err);
3000 err = nfs4_handle_exception(server, err,
3002 } while (exception.retry);
3007 * The file is not closed if it is opened due to the a request to change
3008 * the size of the file. The open call will not be needed once the
3009 * VFS layer lookup-intents are implemented.
3011 * Close is called when the inode is destroyed.
3012 * If we haven't opened the file for O_WRONLY, we
3013 * need to in the size_change case to obtain a stateid.
3016 * Because OPEN is always done by name in nfsv4, it is
3017 * possible that we opened a different file by the same
3018 * name. We can recognize this race condition, but we
3019 * can't do anything about it besides returning an error.
3021 * This will be fixed with VFS changes (lookup-intent).
3024 nfs4_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr,
3025 struct iattr *sattr)
3027 struct inode *inode = dentry->d_inode;
3028 struct rpc_cred *cred = NULL;
3029 struct nfs4_state *state = NULL;
3030 struct nfs4_label *label = NULL;
3033 if (pnfs_ld_layoutret_on_setattr(inode))
3034 pnfs_commit_and_return_layout(inode);
3036 nfs_fattr_init(fattr);
3038 /* Deal with open(O_TRUNC) */
3039 if (sattr->ia_valid & ATTR_OPEN)
3040 sattr->ia_valid &= ~(ATTR_MTIME|ATTR_CTIME);
3042 /* Optimization: if the end result is no change, don't RPC */
3043 if ((sattr->ia_valid & ~(ATTR_FILE|ATTR_OPEN)) == 0)
3046 /* Search for an existing open(O_WRITE) file */
3047 if (sattr->ia_valid & ATTR_FILE) {
3048 struct nfs_open_context *ctx;
3050 ctx = nfs_file_open_context(sattr->ia_file);
3057 label = nfs4_label_alloc(NFS_SERVER(inode), GFP_KERNEL);
3059 return PTR_ERR(label);
3061 status = nfs4_do_setattr(inode, cred, fattr, sattr, state, NULL, label);
3063 nfs_setattr_update_inode(inode, sattr);
3064 nfs_setsecurity(inode, fattr, label);
3066 nfs4_label_free(label);
3070 static int _nfs4_proc_lookup(struct rpc_clnt *clnt, struct inode *dir,
3071 const struct qstr *name, struct nfs_fh *fhandle,
3072 struct nfs_fattr *fattr, struct nfs4_label *label)
3074 struct nfs_server *server = NFS_SERVER(dir);
3076 struct nfs4_lookup_arg args = {
3077 .bitmask = server->attr_bitmask,
3078 .dir_fh = NFS_FH(dir),
3081 struct nfs4_lookup_res res = {
3087 struct rpc_message msg = {
3088 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP],
3093 args.bitmask = nfs4_bitmask(server, label);
3095 nfs_fattr_init(fattr);
3097 dprintk("NFS call lookup %s\n", name->name);
3098 status = nfs4_call_sync(clnt, server, &msg, &args.seq_args, &res.seq_res, 0);
3099 dprintk("NFS reply lookup: %d\n", status);
3103 static void nfs_fixup_secinfo_attributes(struct nfs_fattr *fattr)
3105 fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE |
3106 NFS_ATTR_FATTR_NLINK | NFS_ATTR_FATTR_MOUNTPOINT;
3107 fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO;
3111 static int nfs4_proc_lookup_common(struct rpc_clnt **clnt, struct inode *dir,
3112 struct qstr *name, struct nfs_fh *fhandle,
3113 struct nfs_fattr *fattr, struct nfs4_label *label)
3115 struct nfs4_exception exception = { };
3116 struct rpc_clnt *client = *clnt;
3119 err = _nfs4_proc_lookup(client, dir, name, fhandle, fattr, label);
3120 trace_nfs4_lookup(dir, name, err);
3122 case -NFS4ERR_BADNAME:
3125 case -NFS4ERR_MOVED:
3126 err = nfs4_get_referral(client, dir, name, fattr, fhandle);
3128 case -NFS4ERR_WRONGSEC:
3130 if (client != *clnt)
3133 client = nfs4_create_sec_client(client, dir, name);
3135 return PTR_ERR(client);
3137 exception.retry = 1;
3140 err = nfs4_handle_exception(NFS_SERVER(dir), err, &exception);
3142 } while (exception.retry);
3147 else if (client != *clnt)
3148 rpc_shutdown_client(client);
3153 static int nfs4_proc_lookup(struct inode *dir, struct qstr *name,
3154 struct nfs_fh *fhandle, struct nfs_fattr *fattr,
3155 struct nfs4_label *label)
3158 struct rpc_clnt *client = NFS_CLIENT(dir);
3160 status = nfs4_proc_lookup_common(&client, dir, name, fhandle, fattr, label);
3161 if (client != NFS_CLIENT(dir)) {
3162 rpc_shutdown_client(client);
3163 nfs_fixup_secinfo_attributes(fattr);
3169 nfs4_proc_lookup_mountpoint(struct inode *dir, struct qstr *name,
3170 struct nfs_fh *fhandle, struct nfs_fattr *fattr)
3173 struct rpc_clnt *client = rpc_clone_client(NFS_CLIENT(dir));
3175 status = nfs4_proc_lookup_common(&client, dir, name, fhandle, fattr, NULL);
3177 rpc_shutdown_client(client);
3178 return ERR_PTR(status);
3183 static int _nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry)
3185 struct nfs_server *server = NFS_SERVER(inode);
3186 struct nfs4_accessargs args = {
3187 .fh = NFS_FH(inode),
3188 .bitmask = server->cache_consistency_bitmask,
3190 struct nfs4_accessres res = {
3193 struct rpc_message msg = {
3194 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_ACCESS],
3197 .rpc_cred = entry->cred,
3199 int mode = entry->mask;
3203 * Determine which access bits we want to ask for...
3205 if (mode & MAY_READ)
3206 args.access |= NFS4_ACCESS_READ;
3207 if (S_ISDIR(inode->i_mode)) {
3208 if (mode & MAY_WRITE)
3209 args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND | NFS4_ACCESS_DELETE;
3210 if (mode & MAY_EXEC)
3211 args.access |= NFS4_ACCESS_LOOKUP;
3213 if (mode & MAY_WRITE)
3214 args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND;
3215 if (mode & MAY_EXEC)
3216 args.access |= NFS4_ACCESS_EXECUTE;
3219 res.fattr = nfs_alloc_fattr();
3220 if (res.fattr == NULL)
3223 status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0);
3225 nfs_access_set_mask(entry, res.access);
3226 nfs_refresh_inode(inode, res.fattr);
3228 nfs_free_fattr(res.fattr);
3232 static int nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry)
3234 struct nfs4_exception exception = { };
3237 err = _nfs4_proc_access(inode, entry);
3238 trace_nfs4_access(inode, err);
3239 err = nfs4_handle_exception(NFS_SERVER(inode), err,
3241 } while (exception.retry);
3246 * TODO: For the time being, we don't try to get any attributes
3247 * along with any of the zero-copy operations READ, READDIR,
3250 * In the case of the first three, we want to put the GETATTR
3251 * after the read-type operation -- this is because it is hard
3252 * to predict the length of a GETATTR response in v4, and thus
3253 * align the READ data correctly. This means that the GETATTR
3254 * may end up partially falling into the page cache, and we should
3255 * shift it into the 'tail' of the xdr_buf before processing.
3256 * To do this efficiently, we need to know the total length
3257 * of data received, which doesn't seem to be available outside
3260 * In the case of WRITE, we also want to put the GETATTR after
3261 * the operation -- in this case because we want to make sure
3262 * we get the post-operation mtime and size.
3264 * Both of these changes to the XDR layer would in fact be quite
3265 * minor, but I decided to leave them for a subsequent patch.
3267 static int _nfs4_proc_readlink(struct inode *inode, struct page *page,
3268 unsigned int pgbase, unsigned int pglen)
3270 struct nfs4_readlink args = {
3271 .fh = NFS_FH(inode),
3276 struct nfs4_readlink_res res;
3277 struct rpc_message msg = {
3278 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READLINK],
3283 return nfs4_call_sync(NFS_SERVER(inode)->client, NFS_SERVER(inode), &msg, &args.seq_args, &res.seq_res, 0);
3286 static int nfs4_proc_readlink(struct inode *inode, struct page *page,
3287 unsigned int pgbase, unsigned int pglen)
3289 struct nfs4_exception exception = { };
3292 err = _nfs4_proc_readlink(inode, page, pgbase, pglen);
3293 trace_nfs4_readlink(inode, err);
3294 err = nfs4_handle_exception(NFS_SERVER(inode), err,
3296 } while (exception.retry);
3301 * This is just for mknod. open(O_CREAT) will always do ->open_context().
3304 nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
3307 struct nfs4_label l, *ilabel = NULL;
3308 struct nfs_open_context *ctx;
3309 struct nfs4_state *state;
3312 ctx = alloc_nfs_open_context(dentry, FMODE_READ);
3314 return PTR_ERR(ctx);
3316 ilabel = nfs4_label_init_security(dir, dentry, sattr, &l);
3318 sattr->ia_mode &= ~current_umask();
3319 state = nfs4_do_open(dir, ctx, flags, sattr, ilabel);
3320 if (IS_ERR(state)) {
3321 status = PTR_ERR(state);
3325 nfs4_label_release_security(ilabel);
3326 put_nfs_open_context(ctx);
3330 static int _nfs4_proc_remove(struct inode *dir, struct qstr *name)
3332 struct nfs_server *server = NFS_SERVER(dir);
3333 struct nfs_removeargs args = {
3337 struct nfs_removeres res = {
3340 struct rpc_message msg = {
3341 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE],
3347 status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 1);
3349 update_changeattr(dir, &res.cinfo);
3353 static int nfs4_proc_remove(struct inode *dir, struct qstr *name)
3355 struct nfs4_exception exception = { };
3358 err = _nfs4_proc_remove(dir, name);
3359 trace_nfs4_remove(dir, name, err);
3360 err = nfs4_handle_exception(NFS_SERVER(dir), err,
3362 } while (exception.retry);
3366 static void nfs4_proc_unlink_setup(struct rpc_message *msg, struct inode *dir)
3368 struct nfs_server *server = NFS_SERVER(dir);
3369 struct nfs_removeargs *args = msg->rpc_argp;
3370 struct nfs_removeres *res = msg->rpc_resp;
3372 res->server = server;
3373 msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE];
3374 nfs4_init_sequence(&args->seq_args, &res->seq_res, 1);
3376 nfs_fattr_init(res->dir_attr);
3379 static void nfs4_proc_unlink_rpc_prepare(struct rpc_task *task, struct nfs_unlinkdata *data)
3381 nfs4_setup_sequence(NFS_SERVER(data->dir),
3382 &data->args.seq_args,
3387 static int nfs4_proc_unlink_done(struct rpc_task *task, struct inode *dir)
3389 struct nfs_unlinkdata *data = task->tk_calldata;
3390 struct nfs_removeres *res = &data->res;
3392 if (!nfs4_sequence_done(task, &res->seq_res))
3394 if (nfs4_async_handle_error(task, res->server, NULL) == -EAGAIN)
3396 update_changeattr(dir, &res->cinfo);
3400 static void nfs4_proc_rename_setup(struct rpc_message *msg, struct inode *dir)
3402 struct nfs_server *server = NFS_SERVER(dir);
3403 struct nfs_renameargs *arg = msg->rpc_argp;
3404 struct nfs_renameres *res = msg->rpc_resp;
3406 msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME];
3407 res->server = server;
3408 nfs4_init_sequence(&arg->seq_args, &res->seq_res, 1);
3411 static void nfs4_proc_rename_rpc_prepare(struct rpc_task *task, struct nfs_renamedata *data)
3413 nfs4_setup_sequence(NFS_SERVER(data->old_dir),
3414 &data->args.seq_args,
3419 static int nfs4_proc_rename_done(struct rpc_task *task, struct inode *old_dir,
3420 struct inode *new_dir)
3422 struct nfs_renamedata *data = task->tk_calldata;
3423 struct nfs_renameres *res = &data->res;
3425 if (!nfs4_sequence_done(task, &res->seq_res))
3427 if (nfs4_async_handle_error(task, res->server, NULL) == -EAGAIN)
3430 update_changeattr(old_dir, &res->old_cinfo);
3431 update_changeattr(new_dir, &res->new_cinfo);
3435 static int _nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name,
3436 struct inode *new_dir, struct qstr *new_name)
3438 struct nfs_server *server = NFS_SERVER(old_dir);
3439 struct nfs_renameargs arg = {
3440 .old_dir = NFS_FH(old_dir),
3441 .new_dir = NFS_FH(new_dir),
3442 .old_name = old_name,
3443 .new_name = new_name,
3445 struct nfs_renameres res = {
3448 struct rpc_message msg = {
3449 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME],
3453 int status = -ENOMEM;
3455 status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1);
3457 update_changeattr(old_dir, &res.old_cinfo);
3458 update_changeattr(new_dir, &res.new_cinfo);
3463 static int nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name,
3464 struct inode *new_dir, struct qstr *new_name)
3466 struct nfs4_exception exception = { };
3469 err = _nfs4_proc_rename(old_dir, old_name,
3471 trace_nfs4_rename(old_dir, old_name, new_dir, new_name, err);
3472 err = nfs4_handle_exception(NFS_SERVER(old_dir), err,
3474 } while (exception.retry);
3478 static int _nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name)
3480 struct nfs_server *server = NFS_SERVER(inode);
3481 struct nfs4_link_arg arg = {
3482 .fh = NFS_FH(inode),
3483 .dir_fh = NFS_FH(dir),
3485 .bitmask = server->attr_bitmask,
3487 struct nfs4_link_res res = {
3491 struct rpc_message msg = {
3492 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LINK],
3496 int status = -ENOMEM;
3498 res.fattr = nfs_alloc_fattr();
3499 if (res.fattr == NULL)
3502 res.label = nfs4_label_alloc(server, GFP_KERNEL);
3503 if (IS_ERR(res.label)) {
3504 status = PTR_ERR(res.label);
3507 arg.bitmask = nfs4_bitmask(server, res.label);
3509 status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1);
3511 update_changeattr(dir, &res.cinfo);
3512 status = nfs_post_op_update_inode(inode, res.fattr);
3514 nfs_setsecurity(inode, res.fattr, res.label);
3518 nfs4_label_free(res.label);
3521 nfs_free_fattr(res.fattr);
3525 static int nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name)
3527 struct nfs4_exception exception = { };
3530 err = nfs4_handle_exception(NFS_SERVER(inode),
3531 _nfs4_proc_link(inode, dir, name),
3533 } while (exception.retry);
3537 struct nfs4_createdata {
3538 struct rpc_message msg;
3539 struct nfs4_create_arg arg;
3540 struct nfs4_create_res res;
3542 struct nfs_fattr fattr;
3543 struct nfs4_label *label;
3546 static struct nfs4_createdata *nfs4_alloc_createdata(struct inode *dir,
3547 struct qstr *name, struct iattr *sattr, u32 ftype)
3549 struct nfs4_createdata *data;
3551 data = kzalloc(sizeof(*data), GFP_KERNEL);
3553 struct nfs_server *server = NFS_SERVER(dir);
3555 data->label = nfs4_label_alloc(server, GFP_KERNEL);
3556 if (IS_ERR(data->label))
3559 data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE];
3560 data->msg.rpc_argp = &data->arg;
3561 data->msg.rpc_resp = &data->res;
3562 data->arg.dir_fh = NFS_FH(dir);
3563 data->arg.server = server;
3564 data->arg.name = name;
3565 data->arg.attrs = sattr;
3566 data->arg.ftype = ftype;
3567 data->arg.bitmask = nfs4_bitmask(server, data->label);
3568 data->res.server = server;
3569 data->res.fh = &data->fh;
3570 data->res.fattr = &data->fattr;
3571 data->res.label = data->label;
3572 nfs_fattr_init(data->res.fattr);
3580 static int nfs4_do_create(struct inode *dir, struct dentry *dentry, struct nfs4_createdata *data)
3582 int status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &data->msg,
3583 &data->arg.seq_args, &data->res.seq_res, 1);
3585 update_changeattr(dir, &data->res.dir_cinfo);
3586 status = nfs_instantiate(dentry, data->res.fh, data->res.fattr, data->res.label);
3591 static void nfs4_free_createdata(struct nfs4_createdata *data)
3593 nfs4_label_free(data->label);
3597 static int _nfs4_proc_symlink(struct inode *dir, struct dentry *dentry,
3598 struct page *page, unsigned int len, struct iattr *sattr,
3599 struct nfs4_label *label)
3601 struct nfs4_createdata *data;
3602 int status = -ENAMETOOLONG;
3604 if (len > NFS4_MAXPATHLEN)
3608 data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4LNK);
3612 data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SYMLINK];
3613 data->arg.u.symlink.pages = &page;
3614 data->arg.u.symlink.len = len;
3615 data->arg.label = label;
3617 status = nfs4_do_create(dir, dentry, data);
3619 nfs4_free_createdata(data);
3624 static int nfs4_proc_symlink(struct inode *dir, struct dentry *dentry,
3625 struct page *page, unsigned int len, struct iattr *sattr)
3627 struct nfs4_exception exception = { };
3628 struct nfs4_label l, *label = NULL;
3631 label = nfs4_label_init_security(dir, dentry, sattr, &l);
3634 err = _nfs4_proc_symlink(dir, dentry, page, len, sattr, label);
3635 trace_nfs4_symlink(dir, &dentry->d_name, err);
3636 err = nfs4_handle_exception(NFS_SERVER(dir), err,
3638 } while (exception.retry);
3640 nfs4_label_release_security(label);
3644 static int _nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry,
3645 struct iattr *sattr, struct nfs4_label *label)
3647 struct nfs4_createdata *data;
3648 int status = -ENOMEM;
3650 data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4DIR);
3654 data->arg.label = label;
3655 status = nfs4_do_create(dir, dentry, data);
3657 nfs4_free_createdata(data);
3662 static int nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry,
3663 struct iattr *sattr)
3665 struct nfs4_exception exception = { };
3666 struct nfs4_label l, *label = NULL;
3669 label = nfs4_label_init_security(dir, dentry, sattr, &l);
3671 sattr->ia_mode &= ~current_umask();
3673 err = _nfs4_proc_mkdir(dir, dentry, sattr, label);
3674 trace_nfs4_mkdir(dir, &dentry->d_name, err);
3675 err = nfs4_handle_exception(NFS_SERVER(dir), err,
3677 } while (exception.retry);
3678 nfs4_label_release_security(label);
3683 static int _nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred,
3684 u64 cookie, struct page **pages, unsigned int count, int plus)
3686 struct inode *dir = dentry->d_inode;
3687 struct nfs4_readdir_arg args = {
3692 .bitmask = NFS_SERVER(dentry->d_inode)->attr_bitmask,
3695 struct nfs4_readdir_res res;
3696 struct rpc_message msg = {
3697 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READDIR],
3704 dprintk("%s: dentry = %s/%s, cookie = %Lu\n", __func__,
3705 dentry->d_parent->d_name.name,
3706 dentry->d_name.name,
3707 (unsigned long long)cookie);
3708 nfs4_setup_readdir(cookie, NFS_I(dir)->cookieverf, dentry, &args);
3709 res.pgbase = args.pgbase;
3710 status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &msg, &args.seq_args, &res.seq_res, 0);
3712 memcpy(NFS_I(dir)->cookieverf, res.verifier.data, NFS4_VERIFIER_SIZE);
3713 status += args.pgbase;
3716 nfs_invalidate_atime(dir);
3718 dprintk("%s: returns %d\n", __func__, status);
3722 static int nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred,
3723 u64 cookie, struct page **pages, unsigned int count, int plus)
3725 struct nfs4_exception exception = { };
3728 err = _nfs4_proc_readdir(dentry, cred, cookie,
3729 pages, count, plus);
3730 trace_nfs4_readdir(dentry->d_inode, err);
3731 err = nfs4_handle_exception(NFS_SERVER(dentry->d_inode), err,
3733 } while (exception.retry);
3737 static int _nfs4_proc_mknod(struct inode *dir, struct dentry *dentry,
3738 struct iattr *sattr, struct nfs4_label *label, dev_t rdev)
3740 struct nfs4_createdata *data;
3741 int mode = sattr->ia_mode;
3742 int status = -ENOMEM;
3744 data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4SOCK);
3749 data->arg.ftype = NF4FIFO;
3750 else if (S_ISBLK(mode)) {
3751 data->arg.ftype = NF4BLK;
3752 data->arg.u.device.specdata1 = MAJOR(rdev);
3753 data->arg.u.device.specdata2 = MINOR(rdev);
3755 else if (S_ISCHR(mode)) {
3756 data->arg.ftype = NF4CHR;
3757 data->arg.u.device.specdata1 = MAJOR(rdev);
3758 data->arg.u.device.specdata2 = MINOR(rdev);
3759 } else if (!S_ISSOCK(mode)) {
3764 data->arg.label = label;
3765 status = nfs4_do_create(dir, dentry, data);
3767 nfs4_free_createdata(data);
3772 static int nfs4_proc_mknod(struct inode *dir, struct dentry *dentry,
3773 struct iattr *sattr, dev_t rdev)
3775 struct nfs4_exception exception = { };
3776 struct nfs4_label l, *label = NULL;
3779 label = nfs4_label_init_security(dir, dentry, sattr, &l);
3781 sattr->ia_mode &= ~current_umask();
3783 err = _nfs4_proc_mknod(dir, dentry, sattr, label, rdev);
3784 trace_nfs4_mknod(dir, &dentry->d_name, err);
3785 err = nfs4_handle_exception(NFS_SERVER(dir), err,
3787 } while (exception.retry);
3789 nfs4_label_release_security(label);
3794 static int _nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle,
3795 struct nfs_fsstat *fsstat)
3797 struct nfs4_statfs_arg args = {
3799 .bitmask = server->attr_bitmask,
3801 struct nfs4_statfs_res res = {
3804 struct rpc_message msg = {
3805 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_STATFS],
3810 nfs_fattr_init(fsstat->fattr);
3811 return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0);
3814 static int nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsstat *fsstat)
3816 struct nfs4_exception exception = { };
3819 err = nfs4_handle_exception(server,
3820 _nfs4_proc_statfs(server, fhandle, fsstat),
3822 } while (exception.retry);
3826 static int _nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle,
3827 struct nfs_fsinfo *fsinfo)
3829 struct nfs4_fsinfo_arg args = {
3831 .bitmask = server->attr_bitmask,
3833 struct nfs4_fsinfo_res res = {
3836 struct rpc_message msg = {
3837 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FSINFO],
3842 return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0);
3845 static int nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo)
3847 struct nfs4_exception exception = { };
3848 unsigned long now = jiffies;
3852 err = _nfs4_do_fsinfo(server, fhandle, fsinfo);
3853 trace_nfs4_fsinfo(server, fhandle, fsinfo->fattr, err);
3855 struct nfs_client *clp = server->nfs_client;
3857 spin_lock(&clp->cl_lock);
3858 clp->cl_lease_time = fsinfo->lease_time * HZ;
3859 clp->cl_last_renewal = now;
3860 spin_unlock(&clp->cl_lock);
3863 err = nfs4_handle_exception(server, err, &exception);
3864 } while (exception.retry);
3868 static int nfs4_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo)
3872 nfs_fattr_init(fsinfo->fattr);
3873 error = nfs4_do_fsinfo(server, fhandle, fsinfo);
3875 /* block layout checks this! */
3876 server->pnfs_blksize = fsinfo->blksize;
3877 set_pnfs_layoutdriver(server, fhandle, fsinfo->layouttype);
3883 static int _nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle,
3884 struct nfs_pathconf *pathconf)
3886 struct nfs4_pathconf_arg args = {
3888 .bitmask = server->attr_bitmask,
3890 struct nfs4_pathconf_res res = {
3891 .pathconf = pathconf,
3893 struct rpc_message msg = {
3894 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_PATHCONF],
3899 /* None of the pathconf attributes are mandatory to implement */
3900 if ((args.bitmask[0] & nfs4_pathconf_bitmap[0]) == 0) {
3901 memset(pathconf, 0, sizeof(*pathconf));
3905 nfs_fattr_init(pathconf->fattr);
3906 return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0);
3909 static int nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle,
3910 struct nfs_pathconf *pathconf)
3912 struct nfs4_exception exception = { };
3916 err = nfs4_handle_exception(server,
3917 _nfs4_proc_pathconf(server, fhandle, pathconf),
3919 } while (exception.retry);
3923 int nfs4_set_rw_stateid(nfs4_stateid *stateid,
3924 const struct nfs_open_context *ctx,
3925 const struct nfs_lock_context *l_ctx,
3928 const struct nfs_lockowner *lockowner = NULL;
3931 lockowner = &l_ctx->lockowner;
3932 return nfs4_select_rw_stateid(stateid, ctx->state, fmode, lockowner);
3934 EXPORT_SYMBOL_GPL(nfs4_set_rw_stateid);
3936 static bool nfs4_stateid_is_current(nfs4_stateid *stateid,
3937 const struct nfs_open_context *ctx,
3938 const struct nfs_lock_context *l_ctx,
3941 nfs4_stateid current_stateid;
3943 if (nfs4_set_rw_stateid(¤t_stateid, ctx, l_ctx, fmode))
3945 return nfs4_stateid_match(stateid, ¤t_stateid);
3948 static bool nfs4_error_stateid_expired(int err)
3951 case -NFS4ERR_DELEG_REVOKED:
3952 case -NFS4ERR_ADMIN_REVOKED:
3953 case -NFS4ERR_BAD_STATEID:
3954 case -NFS4ERR_STALE_STATEID:
3955 case -NFS4ERR_OLD_STATEID:
3956 case -NFS4ERR_OPENMODE:
3957 case -NFS4ERR_EXPIRED:
3963 void __nfs4_read_done_cb(struct nfs_read_data *data)
3965 nfs_invalidate_atime(data->header->inode);
3968 static int nfs4_read_done_cb(struct rpc_task *task, struct nfs_read_data *data)
3970 struct nfs_server *server = NFS_SERVER(data->header->inode);
3972 trace_nfs4_read(data, task->tk_status);
3973 if (nfs4_async_handle_error(task, server, data->args.context->state) == -EAGAIN) {
3974 rpc_restart_call_prepare(task);
3978 __nfs4_read_done_cb(data);
3979 if (task->tk_status > 0)
3980 renew_lease(server, data->timestamp);
3984 static bool nfs4_read_stateid_changed(struct rpc_task *task,
3985 struct nfs_readargs *args)
3988 if (!nfs4_error_stateid_expired(task->tk_status) ||
3989 nfs4_stateid_is_current(&args->stateid,
3994 rpc_restart_call_prepare(task);
3998 static int nfs4_read_done(struct rpc_task *task, struct nfs_read_data *data)
4001 dprintk("--> %s\n", __func__);
4003 if (!nfs4_sequence_done(task, &data->res.seq_res))
4005 if (nfs4_read_stateid_changed(task, &data->args))
4007 return data->read_done_cb ? data->read_done_cb(task, data) :
4008 nfs4_read_done_cb(task, data);
4011 static void nfs4_proc_read_setup(struct nfs_read_data *data, struct rpc_message *msg)
4013 data->timestamp = jiffies;
4014 data->read_done_cb = nfs4_read_done_cb;
4015 msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READ];
4016 nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 0);
4019 static void nfs4_proc_read_rpc_prepare(struct rpc_task *task, struct nfs_read_data *data)
4021 if (nfs4_setup_sequence(NFS_SERVER(data->header->inode),
4022 &data->args.seq_args,
4026 nfs4_set_rw_stateid(&data->args.stateid, data->args.context,
4027 data->args.lock_context, FMODE_READ);
4030 static int nfs4_write_done_cb(struct rpc_task *task, struct nfs_write_data *data)
4032 struct inode *inode = data->header->inode;
4034 trace_nfs4_write(data, task->tk_status);
4035 if (nfs4_async_handle_error(task, NFS_SERVER(inode), data->args.context->state) == -EAGAIN) {
4036 rpc_restart_call_prepare(task);
4039 if (task->tk_status >= 0) {
4040 renew_lease(NFS_SERVER(inode), data->timestamp);
4041 nfs_post_op_update_inode_force_wcc(inode, &data->fattr);
4046 static bool nfs4_write_stateid_changed(struct rpc_task *task,
4047 struct nfs_writeargs *args)
4050 if (!nfs4_error_stateid_expired(task->tk_status) ||
4051 nfs4_stateid_is_current(&args->stateid,
4056 rpc_restart_call_prepare(task);
4060 static int nfs4_write_done(struct rpc_task *task, struct nfs_write_data *data)
4062 if (!nfs4_sequence_done(task, &data->res.seq_res))
4064 if (nfs4_write_stateid_changed(task, &data->args))
4066 return data->write_done_cb ? data->write_done_cb(task, data) :
4067 nfs4_write_done_cb(task, data);
4071 bool nfs4_write_need_cache_consistency_data(const struct nfs_write_data *data)
4073 const struct nfs_pgio_header *hdr = data->header;
4075 /* Don't request attributes for pNFS or O_DIRECT writes */
4076 if (data->ds_clp != NULL || hdr->dreq != NULL)
4078 /* Otherwise, request attributes if and only if we don't hold
4081 return nfs4_have_delegation(hdr->inode, FMODE_READ) == 0;
4084 static void nfs4_proc_write_setup(struct nfs_write_data *data, struct rpc_message *msg)
4086 struct nfs_server *server = NFS_SERVER(data->header->inode);
4088 if (!nfs4_write_need_cache_consistency_data(data)) {
4089 data->args.bitmask = NULL;
4090 data->res.fattr = NULL;
4092 data->args.bitmask = server->cache_consistency_bitmask;
4094 if (!data->write_done_cb)
4095 data->write_done_cb = nfs4_write_done_cb;
4096 data->res.server = server;
4097 data->timestamp = jiffies;
4099 msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_WRITE];
4100 nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 1);
4103 static void nfs4_proc_write_rpc_prepare(struct rpc_task *task, struct nfs_write_data *data)
4105 if (nfs4_setup_sequence(NFS_SERVER(data->header->inode),
4106 &data->args.seq_args,
4110 nfs4_set_rw_stateid(&data->args.stateid, data->args.context,
4111 data->args.lock_context, FMODE_WRITE);
4114 static void nfs4_proc_commit_rpc_prepare(struct rpc_task *task, struct nfs_commit_data *data)
4116 nfs4_setup_sequence(NFS_SERVER(data->inode),
4117 &data->args.seq_args,
4122 static int nfs4_commit_done_cb(struct rpc_task *task, struct nfs_commit_data *data)
4124 struct inode *inode = data->inode;
4126 trace_nfs4_commit(data, task->tk_status);
4127 if (nfs4_async_handle_error(task, NFS_SERVER(inode), NULL) == -EAGAIN) {
4128 rpc_restart_call_prepare(task);
4134 static int nfs4_commit_done(struct rpc_task *task, struct nfs_commit_data *data)
4136 if (!nfs4_sequence_done(task, &data->res.seq_res))
4138 return data->commit_done_cb(task, data);
4141 static void nfs4_proc_commit_setup(struct nfs_commit_data *data, struct rpc_message *msg)
4143 struct nfs_server *server = NFS_SERVER(data->inode);
4145 if (data->commit_done_cb == NULL)
4146 data->commit_done_cb = nfs4_commit_done_cb;
4147 data->res.server = server;
4148 msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_COMMIT];
4149 nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 1);
4152 struct nfs4_renewdata {
4153 struct nfs_client *client;
4154 unsigned long timestamp;
4158 * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special
4159 * standalone procedure for queueing an asynchronous RENEW.
4161 static void nfs4_renew_release(void *calldata)
4163 struct nfs4_renewdata *data = calldata;
4164 struct nfs_client *clp = data->client;
4166 if (atomic_read(&clp->cl_count) > 1)
4167 nfs4_schedule_state_renewal(clp);
4168 nfs_put_client(clp);
4172 static void nfs4_renew_done(struct rpc_task *task, void *calldata)
4174 struct nfs4_renewdata *data = calldata;
4175 struct nfs_client *clp = data->client;
4176 unsigned long timestamp = data->timestamp;
4178 trace_nfs4_renew_async(clp, task->tk_status);
4179 if (task->tk_status < 0) {
4180 /* Unless we're shutting down, schedule state recovery! */
4181 if (test_bit(NFS_CS_RENEWD, &clp->cl_res_state) == 0)
4183 if (task->tk_status != NFS4ERR_CB_PATH_DOWN) {
4184 nfs4_schedule_lease_recovery(clp);
4187 nfs4_schedule_path_down_recovery(clp);
4189 do_renew_lease(clp, timestamp);
4192 static const struct rpc_call_ops nfs4_renew_ops = {
4193 .rpc_call_done = nfs4_renew_done,
4194 .rpc_release = nfs4_renew_release,
4197 static int nfs4_proc_async_renew(struct nfs_client *clp, struct rpc_cred *cred, unsigned renew_flags)
4199 struct rpc_message msg = {
4200 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW],
4204 struct nfs4_renewdata *data;
4206 if (renew_flags == 0)
4208 if (!atomic_inc_not_zero(&clp->cl_count))
4210 data = kmalloc(sizeof(*data), GFP_NOFS);
4214 data->timestamp = jiffies;
4215 return rpc_call_async(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT,
4216 &nfs4_renew_ops, data);
4219 static int nfs4_proc_renew(struct nfs_client *clp, struct rpc_cred *cred)
4221 struct rpc_message msg = {
4222 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW],
4226 unsigned long now = jiffies;
4229 status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT);
4232 do_renew_lease(clp, now);
4236 static inline int nfs4_server_supports_acls(struct nfs_server *server)
4238 return (server->caps & NFS_CAP_ACLS)
4239 && (server->acl_bitmask & ACL4_SUPPORT_ALLOW_ACL)
4240 && (server->acl_bitmask & ACL4_SUPPORT_DENY_ACL);
4243 /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_SIZE, and that
4244 * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_SIZE) bytes on
4247 #define NFS4ACL_MAXPAGES DIV_ROUND_UP(XATTR_SIZE_MAX, PAGE_SIZE)
4249 static int buf_to_pages_noslab(const void *buf, size_t buflen,
4250 struct page **pages, unsigned int *pgbase)
4252 struct page *newpage, **spages;
4258 len = min_t(size_t, PAGE_SIZE, buflen);
4259 newpage = alloc_page(GFP_KERNEL);
4261 if (newpage == NULL)
4263 memcpy(page_address(newpage), buf, len);
4268 } while (buflen != 0);
4274 __free_page(spages[rc-1]);
4278 struct nfs4_cached_acl {
4284 static void nfs4_set_cached_acl(struct inode *inode, struct nfs4_cached_acl *acl)
4286 struct nfs_inode *nfsi = NFS_I(inode);
4288 spin_lock(&inode->i_lock);
4289 kfree(nfsi->nfs4_acl);
4290 nfsi->nfs4_acl = acl;
4291 spin_unlock(&inode->i_lock);
4294 static void nfs4_zap_acl_attr(struct inode *inode)
4296 nfs4_set_cached_acl(inode, NULL);
4299 static inline ssize_t nfs4_read_cached_acl(struct inode *inode, char *buf, size_t buflen)
4301 struct nfs_inode *nfsi = NFS_I(inode);
4302 struct nfs4_cached_acl *acl;
4305 spin_lock(&inode->i_lock);
4306 acl = nfsi->nfs4_acl;
4309 if (buf == NULL) /* user is just asking for length */
4311 if (acl->cached == 0)
4313 ret = -ERANGE; /* see getxattr(2) man page */
4314 if (acl->len > buflen)
4316 memcpy(buf, acl->data, acl->len);
4320 spin_unlock(&inode->i_lock);
4324 static void nfs4_write_cached_acl(struct inode *inode, struct page **pages, size_t pgbase, size_t acl_len)
4326 struct nfs4_cached_acl *acl;
4327 size_t buflen = sizeof(*acl) + acl_len;
4329 if (buflen <= PAGE_SIZE) {
4330 acl = kmalloc(buflen, GFP_KERNEL);
4334 _copy_from_pages(acl->data, pages, pgbase, acl_len);
4336 acl = kmalloc(sizeof(*acl), GFP_KERNEL);
4343 nfs4_set_cached_acl(inode, acl);
4347 * The getxattr API returns the required buffer length when called with a
4348 * NULL buf. The NFSv4 acl tool then calls getxattr again after allocating
4349 * the required buf. On a NULL buf, we send a page of data to the server
4350 * guessing that the ACL request can be serviced by a page. If so, we cache
4351 * up to the page of ACL data, and the 2nd call to getxattr is serviced by
4352 * the cache. If not so, we throw away the page, and cache the required
4353 * length. The next getxattr call will then produce another round trip to
4354 * the server, this time with the input buf of the required size.
4356 static ssize_t __nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen)
4358 struct page *pages[NFS4ACL_MAXPAGES] = {NULL, };
4359 struct nfs_getaclargs args = {
4360 .fh = NFS_FH(inode),
4364 struct nfs_getaclres res = {
4367 struct rpc_message msg = {
4368 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETACL],
4372 unsigned int npages = DIV_ROUND_UP(buflen, PAGE_SIZE);
4373 int ret = -ENOMEM, i;
4375 /* As long as we're doing a round trip to the server anyway,
4376 * let's be prepared for a page of acl data. */
4379 if (npages > ARRAY_SIZE(pages))
4382 for (i = 0; i < npages; i++) {
4383 pages[i] = alloc_page(GFP_KERNEL);
4388 /* for decoding across pages */
4389 res.acl_scratch = alloc_page(GFP_KERNEL);
4390 if (!res.acl_scratch)
4393 args.acl_len = npages * PAGE_SIZE;
4394 args.acl_pgbase = 0;
4396 dprintk("%s buf %p buflen %zu npages %d args.acl_len %zu\n",
4397 __func__, buf, buflen, npages, args.acl_len);
4398 ret = nfs4_call_sync(NFS_SERVER(inode)->client, NFS_SERVER(inode),
4399 &msg, &args.seq_args, &res.seq_res, 0);
4403 /* Handle the case where the passed-in buffer is too short */
4404 if (res.acl_flags & NFS4_ACL_TRUNC) {
4405 /* Did the user only issue a request for the acl length? */
4411 nfs4_write_cached_acl(inode, pages, res.acl_data_offset, res.acl_len);
4413 if (res.acl_len > buflen) {
4417 _copy_from_pages(buf, pages, res.acl_data_offset, res.acl_len);
4422 for (i = 0; i < npages; i++)
4424 __free_page(pages[i]);
4425 if (res.acl_scratch)
4426 __free_page(res.acl_scratch);
4430 static ssize_t nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen)
4432 struct nfs4_exception exception = { };
4435 ret = __nfs4_get_acl_uncached(inode, buf, buflen);
4436 trace_nfs4_get_acl(inode, ret);
4439 ret = nfs4_handle_exception(NFS_SERVER(inode), ret, &exception);
4440 } while (exception.retry);
4444 static ssize_t nfs4_proc_get_acl(struct inode *inode, void *buf, size_t buflen)
4446 struct nfs_server *server = NFS_SERVER(inode);
4449 if (!nfs4_server_supports_acls(server))
4451 ret = nfs_revalidate_inode(server, inode);
4454 if (NFS_I(inode)->cache_validity & NFS_INO_INVALID_ACL)
4455 nfs_zap_acl_cache(inode);
4456 ret = nfs4_read_cached_acl(inode, buf, buflen);
4458 /* -ENOENT is returned if there is no ACL or if there is an ACL
4459 * but no cached acl data, just the acl length */
4461 return nfs4_get_acl_uncached(inode, buf, buflen);
4464 static int __nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen)
4466 struct nfs_server *server = NFS_SERVER(inode);
4467 struct page *pages[NFS4ACL_MAXPAGES];
4468 struct nfs_setaclargs arg = {
4469 .fh = NFS_FH(inode),
4473 struct nfs_setaclres res;
4474 struct rpc_message msg = {
4475 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETACL],
4479 unsigned int npages = DIV_ROUND_UP(buflen, PAGE_SIZE);
4482 if (!nfs4_server_supports_acls(server))
4484 if (npages > ARRAY_SIZE(pages))
4486 i = buf_to_pages_noslab(buf, buflen, arg.acl_pages, &arg.acl_pgbase);
4489 nfs4_inode_return_delegation(inode);
4490 ret = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1);
4493 * Free each page after tx, so the only ref left is
4494 * held by the network stack
4497 put_page(pages[i-1]);
4500 * Acl update can result in inode attribute update.
4501 * so mark the attribute cache invalid.
4503 spin_lock(&inode->i_lock);
4504 NFS_I(inode)->cache_validity |= NFS_INO_INVALID_ATTR;
4505 spin_unlock(&inode->i_lock);
4506 nfs_access_zap_cache(inode);
4507 nfs_zap_acl_cache(inode);
4511 static int nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen)
4513 struct nfs4_exception exception = { };
4516 err = __nfs4_proc_set_acl(inode, buf, buflen);
4517 trace_nfs4_set_acl(inode, err);
4518 err = nfs4_handle_exception(NFS_SERVER(inode), err,
4520 } while (exception.retry);
4524 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
4525 static int _nfs4_get_security_label(struct inode *inode, void *buf,
4528 struct nfs_server *server = NFS_SERVER(inode);
4529 struct nfs_fattr fattr;
4530 struct nfs4_label label = {0, 0, buflen, buf};
4532 u32 bitmask[3] = { 0, 0, FATTR4_WORD2_SECURITY_LABEL };
4533 struct nfs4_getattr_arg args = {
4534 .fh = NFS_FH(inode),
4537 struct nfs4_getattr_res res = {
4542 struct rpc_message msg = {
4543 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETATTR],
4549 nfs_fattr_init(&fattr);
4551 ret = rpc_call_sync(server->client, &msg, 0);
4554 if (!(fattr.valid & NFS_ATTR_FATTR_V4_SECURITY_LABEL))
4556 if (buflen < label.len)
4561 static int nfs4_get_security_label(struct inode *inode, void *buf,
4564 struct nfs4_exception exception = { };
4567 if (!nfs_server_capable(inode, NFS_CAP_SECURITY_LABEL))
4571 err = _nfs4_get_security_label(inode, buf, buflen);
4572 trace_nfs4_get_security_label(inode, err);
4573 err = nfs4_handle_exception(NFS_SERVER(inode), err,
4575 } while (exception.retry);
4579 static int _nfs4_do_set_security_label(struct inode *inode,
4580 struct nfs4_label *ilabel,
4581 struct nfs_fattr *fattr,
4582 struct nfs4_label *olabel)
4585 struct iattr sattr = {0};
4586 struct nfs_server *server = NFS_SERVER(inode);
4587 const u32 bitmask[3] = { 0, 0, FATTR4_WORD2_SECURITY_LABEL };
4588 struct nfs_setattrargs args = {
4589 .fh = NFS_FH(inode),
4595 struct nfs_setattrres res = {
4600 struct rpc_message msg = {
4601 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETATTR],
4607 nfs4_stateid_copy(&args.stateid, &zero_stateid);
4609 status = rpc_call_sync(server->client, &msg, 0);
4611 dprintk("%s failed: %d\n", __func__, status);
4616 static int nfs4_do_set_security_label(struct inode *inode,
4617 struct nfs4_label *ilabel,
4618 struct nfs_fattr *fattr,
4619 struct nfs4_label *olabel)
4621 struct nfs4_exception exception = { };
4625 err = _nfs4_do_set_security_label(inode, ilabel,
4627 trace_nfs4_set_security_label(inode, err);
4628 err = nfs4_handle_exception(NFS_SERVER(inode), err,
4630 } while (exception.retry);
4635 nfs4_set_security_label(struct dentry *dentry, const void *buf, size_t buflen)
4637 struct nfs4_label ilabel, *olabel = NULL;
4638 struct nfs_fattr fattr;
4639 struct rpc_cred *cred;
4640 struct inode *inode = dentry->d_inode;
4643 if (!nfs_server_capable(inode, NFS_CAP_SECURITY_LABEL))
4646 nfs_fattr_init(&fattr);
4650 ilabel.label = (char *)buf;
4651 ilabel.len = buflen;
4653 cred = rpc_lookup_cred();
4655 return PTR_ERR(cred);
4657 olabel = nfs4_label_alloc(NFS_SERVER(inode), GFP_KERNEL);
4658 if (IS_ERR(olabel)) {
4659 status = -PTR_ERR(olabel);
4663 status = nfs4_do_set_security_label(inode, &ilabel, &fattr, olabel);
4665 nfs_setsecurity(inode, &fattr, olabel);
4667 nfs4_label_free(olabel);
4672 #endif /* CONFIG_NFS_V4_SECURITY_LABEL */
4676 nfs4_async_handle_error(struct rpc_task *task, const struct nfs_server *server, struct nfs4_state *state)
4678 struct nfs_client *clp = server->nfs_client;
4680 if (task->tk_status >= 0)
4682 switch(task->tk_status) {
4683 case -NFS4ERR_DELEG_REVOKED:
4684 case -NFS4ERR_ADMIN_REVOKED:
4685 case -NFS4ERR_BAD_STATEID:
4688 nfs_remove_bad_delegation(state->inode);
4689 case -NFS4ERR_OPENMODE:
4692 if (nfs4_schedule_stateid_recovery(server, state) < 0)
4693 goto stateid_invalid;
4694 goto wait_on_recovery;
4695 case -NFS4ERR_EXPIRED:
4696 if (state != NULL) {
4697 if (nfs4_schedule_stateid_recovery(server, state) < 0)
4698 goto stateid_invalid;
4700 case -NFS4ERR_STALE_STATEID:
4701 case -NFS4ERR_STALE_CLIENTID:
4702 nfs4_schedule_lease_recovery(clp);
4703 goto wait_on_recovery;
4704 #if defined(CONFIG_NFS_V4_1)
4705 case -NFS4ERR_BADSESSION:
4706 case -NFS4ERR_BADSLOT:
4707 case -NFS4ERR_BAD_HIGH_SLOT:
4708 case -NFS4ERR_DEADSESSION:
4709 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION:
4710 case -NFS4ERR_SEQ_FALSE_RETRY:
4711 case -NFS4ERR_SEQ_MISORDERED:
4712 dprintk("%s ERROR %d, Reset session\n", __func__,
4714 nfs4_schedule_session_recovery(clp->cl_session, task->tk_status);
4715 task->tk_status = 0;
4717 #endif /* CONFIG_NFS_V4_1 */
4718 case -NFS4ERR_DELAY:
4719 nfs_inc_server_stats(server, NFSIOS_DELAY);
4720 case -NFS4ERR_GRACE:
4721 rpc_delay(task, NFS4_POLL_RETRY_MAX);
4722 task->tk_status = 0;
4724 case -NFS4ERR_RETRY_UNCACHED_REP:
4725 case -NFS4ERR_OLD_STATEID:
4726 task->tk_status = 0;
4729 task->tk_status = nfs4_map_errors(task->tk_status);
4732 task->tk_status = -EIO;
4735 rpc_sleep_on(&clp->cl_rpcwaitq, task, NULL);
4736 if (test_bit(NFS4CLNT_MANAGER_RUNNING, &clp->cl_state) == 0)
4737 rpc_wake_up_queued_task(&clp->cl_rpcwaitq, task);
4738 task->tk_status = 0;
4742 static void nfs4_init_boot_verifier(const struct nfs_client *clp,
4743 nfs4_verifier *bootverf)
4747 if (test_bit(NFS4CLNT_PURGE_STATE, &clp->cl_state)) {
4748 /* An impossible timestamp guarantees this value
4749 * will never match a generated boot time. */
4751 verf[1] = cpu_to_be32(NSEC_PER_SEC + 1);
4753 struct nfs_net *nn = net_generic(clp->cl_net, nfs_net_id);
4754 verf[0] = cpu_to_be32(nn->boot_time.tv_sec);
4755 verf[1] = cpu_to_be32(nn->boot_time.tv_nsec);
4757 memcpy(bootverf->data, verf, sizeof(bootverf->data));
4761 nfs4_init_nonuniform_client_string(const struct nfs_client *clp,
4762 char *buf, size_t len)
4764 unsigned int result;
4767 result = scnprintf(buf, len, "Linux NFSv4.0 %s/%s %s",
4769 rpc_peeraddr2str(clp->cl_rpcclient,
4771 rpc_peeraddr2str(clp->cl_rpcclient,
4772 RPC_DISPLAY_PROTO));
4778 nfs4_init_uniform_client_string(const struct nfs_client *clp,
4779 char *buf, size_t len)
4781 const char *nodename = clp->cl_rpcclient->cl_nodename;
4783 if (nfs4_client_id_uniquifier[0] != '\0')
4784 return scnprintf(buf, len, "Linux NFSv%u.%u %s/%s",
4785 clp->rpc_ops->version,
4786 clp->cl_minorversion,
4787 nfs4_client_id_uniquifier,
4789 return scnprintf(buf, len, "Linux NFSv%u.%u %s",
4790 clp->rpc_ops->version, clp->cl_minorversion,
4795 * nfs4_proc_setclientid - Negotiate client ID
4796 * @clp: state data structure
4797 * @program: RPC program for NFSv4 callback service
4798 * @port: IP port number for NFS4 callback service
4799 * @cred: RPC credential to use for this call
4800 * @res: where to place the result
4802 * Returns zero, a negative errno, or a negative NFS4ERR status code.
4804 int nfs4_proc_setclientid(struct nfs_client *clp, u32 program,
4805 unsigned short port, struct rpc_cred *cred,
4806 struct nfs4_setclientid_res *res)
4808 nfs4_verifier sc_verifier;
4809 struct nfs4_setclientid setclientid = {
4810 .sc_verifier = &sc_verifier,
4812 .sc_cb_ident = clp->cl_cb_ident,
4814 struct rpc_message msg = {
4815 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID],
4816 .rpc_argp = &setclientid,
4822 /* nfs_client_id4 */
4823 nfs4_init_boot_verifier(clp, &sc_verifier);
4824 if (test_bit(NFS_CS_MIGRATION, &clp->cl_flags))
4825 setclientid.sc_name_len =
4826 nfs4_init_uniform_client_string(clp,
4827 setclientid.sc_name,
4828 sizeof(setclientid.sc_name));
4830 setclientid.sc_name_len =
4831 nfs4_init_nonuniform_client_string(clp,
4832 setclientid.sc_name,
4833 sizeof(setclientid.sc_name));
4836 setclientid.sc_netid_len = scnprintf(setclientid.sc_netid,
4837 sizeof(setclientid.sc_netid), "%s",
4838 rpc_peeraddr2str(clp->cl_rpcclient,
4839 RPC_DISPLAY_NETID));
4841 setclientid.sc_uaddr_len = scnprintf(setclientid.sc_uaddr,
4842 sizeof(setclientid.sc_uaddr), "%s.%u.%u",
4843 clp->cl_ipaddr, port >> 8, port & 255);
4845 dprintk("NFS call setclientid auth=%s, '%.*s'\n",
4846 clp->cl_rpcclient->cl_auth->au_ops->au_name,
4847 setclientid.sc_name_len, setclientid.sc_name);
4848 status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT);
4849 trace_nfs4_setclientid(clp, status);
4850 dprintk("NFS reply setclientid: %d\n", status);
4855 * nfs4_proc_setclientid_confirm - Confirm client ID
4856 * @clp: state data structure
4857 * @res: result of a previous SETCLIENTID
4858 * @cred: RPC credential to use for this call
4860 * Returns zero, a negative errno, or a negative NFS4ERR status code.
4862 int nfs4_proc_setclientid_confirm(struct nfs_client *clp,
4863 struct nfs4_setclientid_res *arg,
4864 struct rpc_cred *cred)
4866 struct rpc_message msg = {
4867 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID_CONFIRM],
4873 dprintk("NFS call setclientid_confirm auth=%s, (client ID %llx)\n",
4874 clp->cl_rpcclient->cl_auth->au_ops->au_name,
4876 status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT);
4877 trace_nfs4_setclientid_confirm(clp, status);
4878 dprintk("NFS reply setclientid_confirm: %d\n", status);
4882 struct nfs4_delegreturndata {
4883 struct nfs4_delegreturnargs args;
4884 struct nfs4_delegreturnres res;
4886 nfs4_stateid stateid;
4887 unsigned long timestamp;
4888 struct nfs_fattr fattr;
4892 static void nfs4_delegreturn_done(struct rpc_task *task, void *calldata)
4894 struct nfs4_delegreturndata *data = calldata;
4896 if (!nfs4_sequence_done(task, &data->res.seq_res))
4899 trace_nfs4_delegreturn_exit(&data->args, &data->res, task->tk_status);
4900 switch (task->tk_status) {
4901 case -NFS4ERR_STALE_STATEID:
4902 case -NFS4ERR_EXPIRED:
4904 renew_lease(data->res.server, data->timestamp);
4907 if (nfs4_async_handle_error(task, data->res.server, NULL) ==
4909 rpc_restart_call_prepare(task);
4913 data->rpc_status = task->tk_status;
4916 static void nfs4_delegreturn_release(void *calldata)
4921 static void nfs4_delegreturn_prepare(struct rpc_task *task, void *data)
4923 struct nfs4_delegreturndata *d_data;
4925 d_data = (struct nfs4_delegreturndata *)data;
4927 nfs4_setup_sequence(d_data->res.server,
4928 &d_data->args.seq_args,
4929 &d_data->res.seq_res,
4933 static const struct rpc_call_ops nfs4_delegreturn_ops = {
4934 .rpc_call_prepare = nfs4_delegreturn_prepare,
4935 .rpc_call_done = nfs4_delegreturn_done,
4936 .rpc_release = nfs4_delegreturn_release,
4939 static int _nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync)
4941 struct nfs4_delegreturndata *data;
4942 struct nfs_server *server = NFS_SERVER(inode);
4943 struct rpc_task *task;
4944 struct rpc_message msg = {
4945 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DELEGRETURN],
4948 struct rpc_task_setup task_setup_data = {
4949 .rpc_client = server->client,
4950 .rpc_message = &msg,
4951 .callback_ops = &nfs4_delegreturn_ops,
4952 .flags = RPC_TASK_ASYNC,
4956 data = kzalloc(sizeof(*data), GFP_NOFS);
4959 nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 1);
4960 data->args.fhandle = &data->fh;
4961 data->args.stateid = &data->stateid;
4962 data->args.bitmask = server->cache_consistency_bitmask;
4963 nfs_copy_fh(&data->fh, NFS_FH(inode));
4964 nfs4_stateid_copy(&data->stateid, stateid);
4965 data->res.fattr = &data->fattr;
4966 data->res.server = server;
4967 nfs_fattr_init(data->res.fattr);
4968 data->timestamp = jiffies;
4969 data->rpc_status = 0;
4971 task_setup_data.callback_data = data;
4972 msg.rpc_argp = &data->args;
4973 msg.rpc_resp = &data->res;
4974 task = rpc_run_task(&task_setup_data);
4976 return PTR_ERR(task);
4979 status = nfs4_wait_for_completion_rpc_task(task);
4982 status = data->rpc_status;
4984 nfs_post_op_update_inode_force_wcc(inode, &data->fattr);
4986 nfs_refresh_inode(inode, &data->fattr);
4992 int nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync)
4994 struct nfs_server *server = NFS_SERVER(inode);
4995 struct nfs4_exception exception = { };
4998 err = _nfs4_proc_delegreturn(inode, cred, stateid, issync);
4999 trace_nfs4_delegreturn(inode, err);
5001 case -NFS4ERR_STALE_STATEID:
5002 case -NFS4ERR_EXPIRED:
5006 err = nfs4_handle_exception(server, err, &exception);
5007 } while (exception.retry);
5011 #define NFS4_LOCK_MINTIMEOUT (1 * HZ)
5012 #define NFS4_LOCK_MAXTIMEOUT (30 * HZ)
5015 * sleep, with exponential backoff, and retry the LOCK operation.
5017 static unsigned long
5018 nfs4_set_lock_task_retry(unsigned long timeout)
5020 freezable_schedule_timeout_killable_unsafe(timeout);
5022 if (timeout > NFS4_LOCK_MAXTIMEOUT)
5023 return NFS4_LOCK_MAXTIMEOUT;
5027 static int _nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request)
5029 struct inode *inode = state->inode;
5030 struct nfs_server *server = NFS_SERVER(inode);
5031 struct nfs_client *clp = server->nfs_client;
5032 struct nfs_lockt_args arg = {
5033 .fh = NFS_FH(inode),
5036 struct nfs_lockt_res res = {
5039 struct rpc_message msg = {
5040 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKT],
5043 .rpc_cred = state->owner->so_cred,
5045 struct nfs4_lock_state *lsp;
5048 arg.lock_owner.clientid = clp->cl_clientid;
5049 status = nfs4_set_lock_state(state, request);
5052 lsp = request->fl_u.nfs4_fl.owner;
5053 arg.lock_owner.id = lsp->ls_seqid.owner_id;
5054 arg.lock_owner.s_dev = server->s_dev;
5055 status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1);
5058 request->fl_type = F_UNLCK;
5060 case -NFS4ERR_DENIED:
5063 request->fl_ops->fl_release_private(request);
5068 static int nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request)
5070 struct nfs4_exception exception = { };
5074 err = _nfs4_proc_getlk(state, cmd, request);
5075 trace_nfs4_get_lock(request, state, cmd, err);
5076 err = nfs4_handle_exception(NFS_SERVER(state->inode), err,
5078 } while (exception.retry);
5082 static int do_vfs_lock(struct file *file, struct file_lock *fl)
5085 switch (fl->fl_flags & (FL_POSIX|FL_FLOCK)) {
5087 res = posix_lock_file_wait(file, fl);
5090 res = flock_lock_file_wait(file, fl);
5098 struct nfs4_unlockdata {
5099 struct nfs_locku_args arg;
5100 struct nfs_locku_res res;
5101 struct nfs4_lock_state *lsp;
5102 struct nfs_open_context *ctx;
5103 struct file_lock fl;
5104 const struct nfs_server *server;
5105 unsigned long timestamp;
5108 static struct nfs4_unlockdata *nfs4_alloc_unlockdata(struct file_lock *fl,
5109 struct nfs_open_context *ctx,
5110 struct nfs4_lock_state *lsp,
5111 struct nfs_seqid *seqid)
5113 struct nfs4_unlockdata *p;
5114 struct inode *inode = lsp->ls_state->inode;
5116 p = kzalloc(sizeof(*p), GFP_NOFS);
5119 p->arg.fh = NFS_FH(inode);
5121 p->arg.seqid = seqid;
5122 p->res.seqid = seqid;
5123 p->arg.stateid = &lsp->ls_stateid;
5125 atomic_inc(&lsp->ls_count);
5126 /* Ensure we don't close file until we're done freeing locks! */
5127 p->ctx = get_nfs_open_context(ctx);
5128 memcpy(&p->fl, fl, sizeof(p->fl));
5129 p->server = NFS_SERVER(inode);
5133 static void nfs4_locku_release_calldata(void *data)
5135 struct nfs4_unlockdata *calldata = data;
5136 nfs_free_seqid(calldata->arg.seqid);
5137 nfs4_put_lock_state(calldata->lsp);
5138 put_nfs_open_context(calldata->ctx);
5142 static void nfs4_locku_done(struct rpc_task *task, void *data)
5144 struct nfs4_unlockdata *calldata = data;
5146 if (!nfs4_sequence_done(task, &calldata->res.seq_res))
5148 switch (task->tk_status) {
5150 nfs4_stateid_copy(&calldata->lsp->ls_stateid,
5151 &calldata->res.stateid);
5152 renew_lease(calldata->server, calldata->timestamp);
5154 case -NFS4ERR_BAD_STATEID:
5155 case -NFS4ERR_OLD_STATEID:
5156 case -NFS4ERR_STALE_STATEID:
5157 case -NFS4ERR_EXPIRED:
5160 if (nfs4_async_handle_error(task, calldata->server, NULL) == -EAGAIN)
5161 rpc_restart_call_prepare(task);
5163 nfs_release_seqid(calldata->arg.seqid);
5166 static void nfs4_locku_prepare(struct rpc_task *task, void *data)
5168 struct nfs4_unlockdata *calldata = data;
5170 if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0)
5172 if (test_bit(NFS_LOCK_INITIALIZED, &calldata->lsp->ls_flags) == 0) {
5173 /* Note: exit _without_ running nfs4_locku_done */
5176 calldata->timestamp = jiffies;
5177 if (nfs4_setup_sequence(calldata->server,
5178 &calldata->arg.seq_args,
5179 &calldata->res.seq_res,
5181 nfs_release_seqid(calldata->arg.seqid);
5184 task->tk_action = NULL;
5186 nfs4_sequence_done(task, &calldata->res.seq_res);
5189 static const struct rpc_call_ops nfs4_locku_ops = {
5190 .rpc_call_prepare = nfs4_locku_prepare,
5191 .rpc_call_done = nfs4_locku_done,
5192 .rpc_release = nfs4_locku_release_calldata,
5195 static struct rpc_task *nfs4_do_unlck(struct file_lock *fl,
5196 struct nfs_open_context *ctx,
5197 struct nfs4_lock_state *lsp,
5198 struct nfs_seqid *seqid)
5200 struct nfs4_unlockdata *data;
5201 struct rpc_message msg = {
5202 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKU],
5203 .rpc_cred = ctx->cred,
5205 struct rpc_task_setup task_setup_data = {
5206 .rpc_client = NFS_CLIENT(lsp->ls_state->inode),
5207 .rpc_message = &msg,
5208 .callback_ops = &nfs4_locku_ops,
5209 .workqueue = nfsiod_workqueue,
5210 .flags = RPC_TASK_ASYNC,
5213 /* Ensure this is an unlock - when canceling a lock, the
5214 * canceled lock is passed in, and it won't be an unlock.
5216 fl->fl_type = F_UNLCK;
5218 data = nfs4_alloc_unlockdata(fl, ctx, lsp, seqid);
5220 nfs_free_seqid(seqid);
5221 return ERR_PTR(-ENOMEM);
5224 nfs4_init_sequence(&data->arg.seq_args, &data->res.seq_res, 1);
5225 msg.rpc_argp = &data->arg;
5226 msg.rpc_resp = &data->res;
5227 task_setup_data.callback_data = data;
5228 return rpc_run_task(&task_setup_data);
5231 static int nfs4_proc_unlck(struct nfs4_state *state, int cmd, struct file_lock *request)
5233 struct inode *inode = state->inode;
5234 struct nfs4_state_owner *sp = state->owner;
5235 struct nfs_inode *nfsi = NFS_I(inode);
5236 struct nfs_seqid *seqid;
5237 struct nfs4_lock_state *lsp;
5238 struct rpc_task *task;
5240 unsigned char fl_flags = request->fl_flags;
5242 status = nfs4_set_lock_state(state, request);
5243 /* Unlock _before_ we do the RPC call */
5244 request->fl_flags |= FL_EXISTS;
5245 /* Exclude nfs_delegation_claim_locks() */
5246 mutex_lock(&sp->so_delegreturn_mutex);
5247 /* Exclude nfs4_reclaim_open_stateid() - note nesting! */
5248 down_read(&nfsi->rwsem);
5249 if (do_vfs_lock(request->fl_file, request) == -ENOENT) {
5250 up_read(&nfsi->rwsem);
5251 mutex_unlock(&sp->so_delegreturn_mutex);
5254 up_read(&nfsi->rwsem);
5255 mutex_unlock(&sp->so_delegreturn_mutex);
5258 /* Is this a delegated lock? */
5259 lsp = request->fl_u.nfs4_fl.owner;
5260 if (test_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags) == 0)
5262 seqid = nfs_alloc_seqid(&lsp->ls_seqid, GFP_KERNEL);
5266 task = nfs4_do_unlck(request, nfs_file_open_context(request->fl_file), lsp, seqid);
5267 status = PTR_ERR(task);
5270 status = nfs4_wait_for_completion_rpc_task(task);
5273 request->fl_flags = fl_flags;
5274 trace_nfs4_unlock(request, state, F_SETLK, status);
5278 struct nfs4_lockdata {
5279 struct nfs_lock_args arg;
5280 struct nfs_lock_res res;
5281 struct nfs4_lock_state *lsp;
5282 struct nfs_open_context *ctx;
5283 struct file_lock fl;
5284 unsigned long timestamp;
5287 struct nfs_server *server;
5290 static struct nfs4_lockdata *nfs4_alloc_lockdata(struct file_lock *fl,
5291 struct nfs_open_context *ctx, struct nfs4_lock_state *lsp,
5294 struct nfs4_lockdata *p;
5295 struct inode *inode = lsp->ls_state->inode;
5296 struct nfs_server *server = NFS_SERVER(inode);
5298 p = kzalloc(sizeof(*p), gfp_mask);
5302 p->arg.fh = NFS_FH(inode);
5304 p->arg.open_seqid = nfs_alloc_seqid(&lsp->ls_state->owner->so_seqid, gfp_mask);
5305 if (p->arg.open_seqid == NULL)
5307 p->arg.lock_seqid = nfs_alloc_seqid(&lsp->ls_seqid, gfp_mask);
5308 if (p->arg.lock_seqid == NULL)
5309 goto out_free_seqid;
5310 p->arg.lock_stateid = &lsp->ls_stateid;
5311 p->arg.lock_owner.clientid = server->nfs_client->cl_clientid;
5312 p->arg.lock_owner.id = lsp->ls_seqid.owner_id;
5313 p->arg.lock_owner.s_dev = server->s_dev;
5314 p->res.lock_seqid = p->arg.lock_seqid;
5317 atomic_inc(&lsp->ls_count);
5318 p->ctx = get_nfs_open_context(ctx);
5319 memcpy(&p->fl, fl, sizeof(p->fl));
5322 nfs_free_seqid(p->arg.open_seqid);
5328 static void nfs4_lock_prepare(struct rpc_task *task, void *calldata)
5330 struct nfs4_lockdata *data = calldata;
5331 struct nfs4_state *state = data->lsp->ls_state;
5333 dprintk("%s: begin!\n", __func__);
5334 if (nfs_wait_on_sequence(data->arg.lock_seqid, task) != 0)
5336 /* Do we need to do an open_to_lock_owner? */
5337 if (!(data->arg.lock_seqid->sequence->flags & NFS_SEQID_CONFIRMED)) {
5338 if (nfs_wait_on_sequence(data->arg.open_seqid, task) != 0) {
5339 goto out_release_lock_seqid;
5341 data->arg.open_stateid = &state->open_stateid;
5342 data->arg.new_lock_owner = 1;
5343 data->res.open_seqid = data->arg.open_seqid;
5345 data->arg.new_lock_owner = 0;
5346 if (!nfs4_valid_open_stateid(state)) {
5347 data->rpc_status = -EBADF;
5348 task->tk_action = NULL;
5349 goto out_release_open_seqid;
5351 data->timestamp = jiffies;
5352 if (nfs4_setup_sequence(data->server,
5353 &data->arg.seq_args,
5357 out_release_open_seqid:
5358 nfs_release_seqid(data->arg.open_seqid);
5359 out_release_lock_seqid:
5360 nfs_release_seqid(data->arg.lock_seqid);
5362 nfs4_sequence_done(task, &data->res.seq_res);
5363 dprintk("%s: done!, ret = %d\n", __func__, data->rpc_status);
5366 static void nfs4_lock_done(struct rpc_task *task, void *calldata)
5368 struct nfs4_lockdata *data = calldata;
5370 dprintk("%s: begin!\n", __func__);
5372 if (!nfs4_sequence_done(task, &data->res.seq_res))
5375 data->rpc_status = task->tk_status;
5376 if (data->arg.new_lock_owner != 0) {
5377 if (data->rpc_status == 0)
5378 nfs_confirm_seqid(&data->lsp->ls_seqid, 0);
5382 if (data->rpc_status == 0) {
5383 nfs4_stateid_copy(&data->lsp->ls_stateid, &data->res.stateid);
5384 set_bit(NFS_LOCK_INITIALIZED, &data->lsp->ls_flags);
5385 renew_lease(NFS_SERVER(data->ctx->dentry->d_inode), data->timestamp);
5388 dprintk("%s: done, ret = %d!\n", __func__, data->rpc_status);
5391 static void nfs4_lock_release(void *calldata)
5393 struct nfs4_lockdata *data = calldata;
5395 dprintk("%s: begin!\n", __func__);
5396 nfs_free_seqid(data->arg.open_seqid);
5397 if (data->cancelled != 0) {
5398 struct rpc_task *task;
5399 task = nfs4_do_unlck(&data->fl, data->ctx, data->lsp,
5400 data->arg.lock_seqid);
5402 rpc_put_task_async(task);
5403 dprintk("%s: cancelling lock!\n", __func__);
5405 nfs_free_seqid(data->arg.lock_seqid);
5406 nfs4_put_lock_state(data->lsp);
5407 put_nfs_open_context(data->ctx);
5409 dprintk("%s: done!\n", __func__);
5412 static const struct rpc_call_ops nfs4_lock_ops = {
5413 .rpc_call_prepare = nfs4_lock_prepare,
5414 .rpc_call_done = nfs4_lock_done,
5415 .rpc_release = nfs4_lock_release,
5418 static void nfs4_handle_setlk_error(struct nfs_server *server, struct nfs4_lock_state *lsp, int new_lock_owner, int error)
5421 case -NFS4ERR_ADMIN_REVOKED:
5422 case -NFS4ERR_BAD_STATEID:
5423 lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED;
5424 if (new_lock_owner != 0 ||
5425 test_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags) != 0)
5426 nfs4_schedule_stateid_recovery(server, lsp->ls_state);
5428 case -NFS4ERR_STALE_STATEID:
5429 lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED;
5430 case -NFS4ERR_EXPIRED:
5431 nfs4_schedule_lease_recovery(server->nfs_client);
5435 static int _nfs4_do_setlk(struct nfs4_state *state, int cmd, struct file_lock *fl, int recovery_type)
5437 struct nfs4_lockdata *data;
5438 struct rpc_task *task;
5439 struct rpc_message msg = {
5440 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCK],
5441 .rpc_cred = state->owner->so_cred,
5443 struct rpc_task_setup task_setup_data = {
5444 .rpc_client = NFS_CLIENT(state->inode),
5445 .rpc_message = &msg,
5446 .callback_ops = &nfs4_lock_ops,
5447 .workqueue = nfsiod_workqueue,
5448 .flags = RPC_TASK_ASYNC,
5452 dprintk("%s: begin!\n", __func__);
5453 data = nfs4_alloc_lockdata(fl, nfs_file_open_context(fl->fl_file),
5454 fl->fl_u.nfs4_fl.owner,
5455 recovery_type == NFS_LOCK_NEW ? GFP_KERNEL : GFP_NOFS);
5459 data->arg.block = 1;
5460 nfs4_init_sequence(&data->arg.seq_args, &data->res.seq_res, 1);
5461 msg.rpc_argp = &data->arg;
5462 msg.rpc_resp = &data->res;
5463 task_setup_data.callback_data = data;
5464 if (recovery_type > NFS_LOCK_NEW) {
5465 if (recovery_type == NFS_LOCK_RECLAIM)
5466 data->arg.reclaim = NFS_LOCK_RECLAIM;
5467 nfs4_set_sequence_privileged(&data->arg.seq_args);
5469 task = rpc_run_task(&task_setup_data);
5471 return PTR_ERR(task);
5472 ret = nfs4_wait_for_completion_rpc_task(task);
5474 ret = data->rpc_status;
5476 nfs4_handle_setlk_error(data->server, data->lsp,
5477 data->arg.new_lock_owner, ret);
5479 data->cancelled = 1;
5481 dprintk("%s: done, ret = %d!\n", __func__, ret);
5485 static int nfs4_lock_reclaim(struct nfs4_state *state, struct file_lock *request)
5487 struct nfs_server *server = NFS_SERVER(state->inode);
5488 struct nfs4_exception exception = {
5489 .inode = state->inode,
5494 /* Cache the lock if possible... */
5495 if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0)
5497 err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_RECLAIM);
5498 trace_nfs4_lock_reclaim(request, state, F_SETLK, err);
5499 if (err != -NFS4ERR_DELAY)
5501 nfs4_handle_exception(server, err, &exception);
5502 } while (exception.retry);
5506 static int nfs4_lock_expired(struct nfs4_state *state, struct file_lock *request)
5508 struct nfs_server *server = NFS_SERVER(state->inode);
5509 struct nfs4_exception exception = {
5510 .inode = state->inode,
5514 err = nfs4_set_lock_state(state, request);
5518 if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0)
5520 err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_EXPIRED);
5521 trace_nfs4_lock_expired(request, state, F_SETLK, err);
5525 case -NFS4ERR_GRACE:
5526 case -NFS4ERR_DELAY:
5527 nfs4_handle_exception(server, err, &exception);
5530 } while (exception.retry);
5535 #if defined(CONFIG_NFS_V4_1)
5537 * nfs41_check_expired_locks - possibly free a lock stateid
5539 * @state: NFSv4 state for an inode
5541 * Returns NFS_OK if recovery for this stateid is now finished.
5542 * Otherwise a negative NFS4ERR value is returned.
5544 static int nfs41_check_expired_locks(struct nfs4_state *state)
5546 int status, ret = -NFS4ERR_BAD_STATEID;
5547 struct nfs4_lock_state *lsp;
5548 struct nfs_server *server = NFS_SERVER(state->inode);
5550 list_for_each_entry(lsp, &state->lock_states, ls_locks) {
5551 if (test_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags)) {
5552 struct rpc_cred *cred = lsp->ls_state->owner->so_cred;
5554 status = nfs41_test_stateid(server,
5557 trace_nfs4_test_lock_stateid(state, lsp, status);
5558 if (status != NFS_OK) {
5559 /* Free the stateid unless the server
5560 * informs us the stateid is unrecognized. */
5561 if (status != -NFS4ERR_BAD_STATEID)
5562 nfs41_free_stateid(server,
5565 clear_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags);
5574 static int nfs41_lock_expired(struct nfs4_state *state, struct file_lock *request)
5576 int status = NFS_OK;
5578 if (test_bit(LK_STATE_IN_USE, &state->flags))
5579 status = nfs41_check_expired_locks(state);
5580 if (status != NFS_OK)
5581 status = nfs4_lock_expired(state, request);
5586 static int _nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request)
5588 struct nfs4_state_owner *sp = state->owner;
5589 struct nfs_inode *nfsi = NFS_I(state->inode);
5590 unsigned char fl_flags = request->fl_flags;
5592 int status = -ENOLCK;
5594 if ((fl_flags & FL_POSIX) &&
5595 !test_bit(NFS_STATE_POSIX_LOCKS, &state->flags))
5597 /* Is this a delegated open? */
5598 status = nfs4_set_lock_state(state, request);
5601 request->fl_flags |= FL_ACCESS;
5602 status = do_vfs_lock(request->fl_file, request);
5605 down_read(&nfsi->rwsem);
5606 if (test_bit(NFS_DELEGATED_STATE, &state->flags)) {
5607 /* Yes: cache locks! */
5608 /* ...but avoid races with delegation recall... */
5609 request->fl_flags = fl_flags & ~FL_SLEEP;
5610 status = do_vfs_lock(request->fl_file, request);
5613 seq = raw_seqcount_begin(&sp->so_reclaim_seqcount);
5614 up_read(&nfsi->rwsem);
5615 status = _nfs4_do_setlk(state, cmd, request, NFS_LOCK_NEW);
5618 down_read(&nfsi->rwsem);
5619 if (read_seqcount_retry(&sp->so_reclaim_seqcount, seq)) {
5620 status = -NFS4ERR_DELAY;
5623 /* Note: we always want to sleep here! */
5624 request->fl_flags = fl_flags | FL_SLEEP;
5625 if (do_vfs_lock(request->fl_file, request) < 0)
5626 printk(KERN_WARNING "NFS: %s: VFS is out of sync with lock "
5627 "manager!\n", __func__);
5629 up_read(&nfsi->rwsem);
5631 request->fl_flags = fl_flags;
5635 static int nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request)
5637 struct nfs4_exception exception = {
5639 .inode = state->inode,
5644 err = _nfs4_proc_setlk(state, cmd, request);
5645 trace_nfs4_set_lock(request, state, cmd, err);
5646 if (err == -NFS4ERR_DENIED)
5648 err = nfs4_handle_exception(NFS_SERVER(state->inode),
5650 } while (exception.retry);
5655 nfs4_proc_lock(struct file *filp, int cmd, struct file_lock *request)
5657 struct nfs_open_context *ctx;
5658 struct nfs4_state *state;
5659 unsigned long timeout = NFS4_LOCK_MINTIMEOUT;
5662 /* verify open state */
5663 ctx = nfs_file_open_context(filp);
5666 if (request->fl_start < 0 || request->fl_end < 0)
5669 if (IS_GETLK(cmd)) {
5671 return nfs4_proc_getlk(state, F_GETLK, request);
5675 if (!(IS_SETLK(cmd) || IS_SETLKW(cmd)))
5678 if (request->fl_type == F_UNLCK) {
5680 return nfs4_proc_unlck(state, cmd, request);
5687 * Don't rely on the VFS having checked the file open mode,
5688 * since it won't do this for flock() locks.
5690 switch (request->fl_type) {
5692 if (!(filp->f_mode & FMODE_READ))
5696 if (!(filp->f_mode & FMODE_WRITE))
5701 status = nfs4_proc_setlk(state, cmd, request);
5702 if ((status != -EAGAIN) || IS_SETLK(cmd))
5704 timeout = nfs4_set_lock_task_retry(timeout);
5705 status = -ERESTARTSYS;
5708 } while(status < 0);
5712 int nfs4_lock_delegation_recall(struct file_lock *fl, struct nfs4_state *state, const nfs4_stateid *stateid)
5714 struct nfs_server *server = NFS_SERVER(state->inode);
5717 err = nfs4_set_lock_state(state, fl);
5720 err = _nfs4_do_setlk(state, F_SETLK, fl, NFS_LOCK_NEW);
5721 return nfs4_handle_delegation_recall_error(server, state, stateid, err);
5724 struct nfs_release_lockowner_data {
5725 struct nfs4_lock_state *lsp;
5726 struct nfs_server *server;
5727 struct nfs_release_lockowner_args args;
5730 static void nfs4_release_lockowner_release(void *calldata)
5732 struct nfs_release_lockowner_data *data = calldata;
5733 nfs4_free_lock_state(data->server, data->lsp);
5737 static const struct rpc_call_ops nfs4_release_lockowner_ops = {
5738 .rpc_release = nfs4_release_lockowner_release,
5741 static int nfs4_release_lockowner(struct nfs_server *server, struct nfs4_lock_state *lsp)
5743 struct nfs_release_lockowner_data *data;
5744 struct rpc_message msg = {
5745 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RELEASE_LOCKOWNER],
5748 if (server->nfs_client->cl_mvops->minor_version != 0)
5750 data = kmalloc(sizeof(*data), GFP_NOFS);
5754 data->server = server;
5755 data->args.lock_owner.clientid = server->nfs_client->cl_clientid;
5756 data->args.lock_owner.id = lsp->ls_seqid.owner_id;
5757 data->args.lock_owner.s_dev = server->s_dev;
5758 msg.rpc_argp = &data->args;
5759 rpc_call_async(server->client, &msg, 0, &nfs4_release_lockowner_ops, data);
5763 #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl"
5765 static int nfs4_xattr_set_nfs4_acl(struct dentry *dentry, const char *key,
5766 const void *buf, size_t buflen,
5767 int flags, int type)
5769 if (strcmp(key, "") != 0)
5772 return nfs4_proc_set_acl(dentry->d_inode, buf, buflen);
5775 static int nfs4_xattr_get_nfs4_acl(struct dentry *dentry, const char *key,
5776 void *buf, size_t buflen, int type)
5778 if (strcmp(key, "") != 0)
5781 return nfs4_proc_get_acl(dentry->d_inode, buf, buflen);
5784 static size_t nfs4_xattr_list_nfs4_acl(struct dentry *dentry, char *list,
5785 size_t list_len, const char *name,
5786 size_t name_len, int type)
5788 size_t len = sizeof(XATTR_NAME_NFSV4_ACL);
5790 if (!nfs4_server_supports_acls(NFS_SERVER(dentry->d_inode)))
5793 if (list && len <= list_len)
5794 memcpy(list, XATTR_NAME_NFSV4_ACL, len);
5798 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
5799 static inline int nfs4_server_supports_labels(struct nfs_server *server)
5801 return server->caps & NFS_CAP_SECURITY_LABEL;
5804 static int nfs4_xattr_set_nfs4_label(struct dentry *dentry, const char *key,
5805 const void *buf, size_t buflen,
5806 int flags, int type)
5808 if (security_ismaclabel(key))
5809 return nfs4_set_security_label(dentry, buf, buflen);
5814 static int nfs4_xattr_get_nfs4_label(struct dentry *dentry, const char *key,
5815 void *buf, size_t buflen, int type)
5817 if (security_ismaclabel(key))
5818 return nfs4_get_security_label(dentry->d_inode, buf, buflen);
5822 static size_t nfs4_xattr_list_nfs4_label(struct dentry *dentry, char *list,
5823 size_t list_len, const char *name,
5824 size_t name_len, int type)
5828 if (nfs_server_capable(dentry->d_inode, NFS_CAP_SECURITY_LABEL)) {
5829 len = security_inode_listsecurity(dentry->d_inode, NULL, 0);
5830 if (list && len <= list_len)
5831 security_inode_listsecurity(dentry->d_inode, list, len);
5836 static const struct xattr_handler nfs4_xattr_nfs4_label_handler = {
5837 .prefix = XATTR_SECURITY_PREFIX,
5838 .list = nfs4_xattr_list_nfs4_label,
5839 .get = nfs4_xattr_get_nfs4_label,
5840 .set = nfs4_xattr_set_nfs4_label,
5846 * nfs_fhget will use either the mounted_on_fileid or the fileid
5848 static void nfs_fixup_referral_attributes(struct nfs_fattr *fattr)
5850 if (!(((fattr->valid & NFS_ATTR_FATTR_MOUNTED_ON_FILEID) ||
5851 (fattr->valid & NFS_ATTR_FATTR_FILEID)) &&
5852 (fattr->valid & NFS_ATTR_FATTR_FSID) &&
5853 (fattr->valid & NFS_ATTR_FATTR_V4_LOCATIONS)))
5856 fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE |
5857 NFS_ATTR_FATTR_NLINK | NFS_ATTR_FATTR_V4_REFERRAL;
5858 fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO;
5862 static int _nfs4_proc_fs_locations(struct rpc_clnt *client, struct inode *dir,
5863 const struct qstr *name,
5864 struct nfs4_fs_locations *fs_locations,
5867 struct nfs_server *server = NFS_SERVER(dir);
5869 [0] = FATTR4_WORD0_FSID | FATTR4_WORD0_FS_LOCATIONS,
5871 struct nfs4_fs_locations_arg args = {
5872 .dir_fh = NFS_FH(dir),
5877 struct nfs4_fs_locations_res res = {
5878 .fs_locations = fs_locations,
5880 struct rpc_message msg = {
5881 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FS_LOCATIONS],
5887 dprintk("%s: start\n", __func__);
5889 /* Ask for the fileid of the absent filesystem if mounted_on_fileid
5890 * is not supported */
5891 if (NFS_SERVER(dir)->attr_bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID)
5892 bitmask[1] |= FATTR4_WORD1_MOUNTED_ON_FILEID;
5894 bitmask[0] |= FATTR4_WORD0_FILEID;
5896 nfs_fattr_init(&fs_locations->fattr);
5897 fs_locations->server = server;
5898 fs_locations->nlocations = 0;
5899 status = nfs4_call_sync(client, server, &msg, &args.seq_args, &res.seq_res, 0);
5900 dprintk("%s: returned status = %d\n", __func__, status);
5904 int nfs4_proc_fs_locations(struct rpc_clnt *client, struct inode *dir,
5905 const struct qstr *name,
5906 struct nfs4_fs_locations *fs_locations,
5909 struct nfs4_exception exception = { };
5912 err = _nfs4_proc_fs_locations(client, dir, name,
5913 fs_locations, page);
5914 trace_nfs4_get_fs_locations(dir, name, err);
5915 err = nfs4_handle_exception(NFS_SERVER(dir), err,
5917 } while (exception.retry);
5922 * If 'use_integrity' is true and the state managment nfs_client
5923 * cl_rpcclient is using krb5i/p, use the integrity protected cl_rpcclient
5924 * and the machine credential as per RFC3530bis and RFC5661 Security
5925 * Considerations sections. Otherwise, just use the user cred with the
5926 * filesystem's rpc_client.
5928 static int _nfs4_proc_secinfo(struct inode *dir, const struct qstr *name, struct nfs4_secinfo_flavors *flavors, bool use_integrity)
5931 struct nfs4_secinfo_arg args = {
5932 .dir_fh = NFS_FH(dir),
5935 struct nfs4_secinfo_res res = {
5938 struct rpc_message msg = {
5939 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SECINFO],
5943 struct rpc_clnt *clnt = NFS_SERVER(dir)->client;
5945 if (use_integrity) {
5946 clnt = NFS_SERVER(dir)->nfs_client->cl_rpcclient;
5947 msg.rpc_cred = nfs4_get_clid_cred(NFS_SERVER(dir)->nfs_client);
5950 dprintk("NFS call secinfo %s\n", name->name);
5951 status = nfs4_call_sync(clnt, NFS_SERVER(dir), &msg, &args.seq_args,
5953 dprintk("NFS reply secinfo: %d\n", status);
5956 put_rpccred(msg.rpc_cred);
5961 int nfs4_proc_secinfo(struct inode *dir, const struct qstr *name,
5962 struct nfs4_secinfo_flavors *flavors)
5964 struct nfs4_exception exception = { };
5967 err = -NFS4ERR_WRONGSEC;
5969 /* try to use integrity protection with machine cred */
5970 if (_nfs4_is_integrity_protected(NFS_SERVER(dir)->nfs_client))
5971 err = _nfs4_proc_secinfo(dir, name, flavors, true);
5974 * if unable to use integrity protection, or SECINFO with
5975 * integrity protection returns NFS4ERR_WRONGSEC (which is
5976 * disallowed by spec, but exists in deployed servers) use
5977 * the current filesystem's rpc_client and the user cred.
5979 if (err == -NFS4ERR_WRONGSEC)
5980 err = _nfs4_proc_secinfo(dir, name, flavors, false);
5982 trace_nfs4_secinfo(dir, name, err);
5983 err = nfs4_handle_exception(NFS_SERVER(dir), err,
5985 } while (exception.retry);
5989 #ifdef CONFIG_NFS_V4_1
5991 * Check the exchange flags returned by the server for invalid flags, having
5992 * both PNFS and NON_PNFS flags set, and not having one of NON_PNFS, PNFS, or
5995 static int nfs4_check_cl_exchange_flags(u32 flags)
5997 if (flags & ~EXCHGID4_FLAG_MASK_R)
5999 if ((flags & EXCHGID4_FLAG_USE_PNFS_MDS) &&
6000 (flags & EXCHGID4_FLAG_USE_NON_PNFS))
6002 if (!(flags & (EXCHGID4_FLAG_MASK_PNFS)))
6006 return -NFS4ERR_INVAL;
6010 nfs41_same_server_scope(struct nfs41_server_scope *a,
6011 struct nfs41_server_scope *b)
6013 if (a->server_scope_sz == b->server_scope_sz &&
6014 memcmp(a->server_scope, b->server_scope, a->server_scope_sz) == 0)
6021 * nfs4_proc_bind_conn_to_session()
6023 * The 4.1 client currently uses the same TCP connection for the
6024 * fore and backchannel.
6026 int nfs4_proc_bind_conn_to_session(struct nfs_client *clp, struct rpc_cred *cred)
6029 struct nfs41_bind_conn_to_session_res res;
6030 struct rpc_message msg = {
6032 &nfs4_procedures[NFSPROC4_CLNT_BIND_CONN_TO_SESSION],
6038 dprintk("--> %s\n", __func__);
6040 res.session = kzalloc(sizeof(struct nfs4_session), GFP_NOFS);
6041 if (unlikely(res.session == NULL)) {
6046 status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT);
6047 trace_nfs4_bind_conn_to_session(clp, status);
6049 if (memcmp(res.session->sess_id.data,
6050 clp->cl_session->sess_id.data, NFS4_MAX_SESSIONID_LEN)) {
6051 dprintk("NFS: %s: Session ID mismatch\n", __func__);
6055 if (res.dir != NFS4_CDFS4_BOTH) {
6056 dprintk("NFS: %s: Unexpected direction from server\n",
6061 if (res.use_conn_in_rdma_mode) {
6062 dprintk("NFS: %s: Server returned RDMA mode = true\n",
6071 dprintk("<-- %s status= %d\n", __func__, status);
6076 * nfs4_proc_exchange_id()
6078 * Returns zero, a negative errno, or a negative NFS4ERR status code.
6080 * Since the clientid has expired, all compounds using sessions
6081 * associated with the stale clientid will be returning
6082 * NFS4ERR_BADSESSION in the sequence operation, and will therefore
6083 * be in some phase of session reset.
6085 int nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred)
6087 nfs4_verifier verifier;
6088 struct nfs41_exchange_id_args args = {
6089 .verifier = &verifier,
6091 .flags = EXCHGID4_FLAG_SUPP_MOVED_REFER |
6092 EXCHGID4_FLAG_BIND_PRINC_STATEID,
6094 struct nfs41_exchange_id_res res = {
6098 struct rpc_message msg = {
6099 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_EXCHANGE_ID],
6105 nfs4_init_boot_verifier(clp, &verifier);
6106 args.id_len = nfs4_init_uniform_client_string(clp, args.id,
6108 dprintk("NFS call exchange_id auth=%s, '%.*s'\n",
6109 clp->cl_rpcclient->cl_auth->au_ops->au_name,
6110 args.id_len, args.id);
6112 res.server_owner = kzalloc(sizeof(struct nfs41_server_owner),
6114 if (unlikely(res.server_owner == NULL)) {
6119 res.server_scope = kzalloc(sizeof(struct nfs41_server_scope),
6121 if (unlikely(res.server_scope == NULL)) {
6123 goto out_server_owner;
6126 res.impl_id = kzalloc(sizeof(struct nfs41_impl_id), GFP_NOFS);
6127 if (unlikely(res.impl_id == NULL)) {
6129 goto out_server_scope;
6132 status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT);
6133 trace_nfs4_exchange_id(clp, status);
6135 status = nfs4_check_cl_exchange_flags(res.flags);
6138 clp->cl_clientid = res.clientid;
6139 clp->cl_exchange_flags = (res.flags & ~EXCHGID4_FLAG_CONFIRMED_R);
6140 if (!(res.flags & EXCHGID4_FLAG_CONFIRMED_R))
6141 clp->cl_seqid = res.seqid;
6143 kfree(clp->cl_serverowner);
6144 clp->cl_serverowner = res.server_owner;
6145 res.server_owner = NULL;
6147 /* use the most recent implementation id */
6148 kfree(clp->cl_implid);
6149 clp->cl_implid = res.impl_id;
6151 if (clp->cl_serverscope != NULL &&
6152 !nfs41_same_server_scope(clp->cl_serverscope,
6153 res.server_scope)) {
6154 dprintk("%s: server_scope mismatch detected\n",
6156 set_bit(NFS4CLNT_SERVER_SCOPE_MISMATCH, &clp->cl_state);
6157 kfree(clp->cl_serverscope);
6158 clp->cl_serverscope = NULL;
6161 if (clp->cl_serverscope == NULL) {
6162 clp->cl_serverscope = res.server_scope;
6169 kfree(res.server_owner);
6171 kfree(res.server_scope);
6173 if (clp->cl_implid != NULL)
6174 dprintk("NFS reply exchange_id: Server Implementation ID: "
6175 "domain: %s, name: %s, date: %llu,%u\n",
6176 clp->cl_implid->domain, clp->cl_implid->name,
6177 clp->cl_implid->date.seconds,
6178 clp->cl_implid->date.nseconds);
6179 dprintk("NFS reply exchange_id: %d\n", status);
6183 static int _nfs4_proc_destroy_clientid(struct nfs_client *clp,
6184 struct rpc_cred *cred)
6186 struct rpc_message msg = {
6187 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DESTROY_CLIENTID],
6193 status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT);
6194 trace_nfs4_destroy_clientid(clp, status);
6196 dprintk("NFS: Got error %d from the server %s on "
6197 "DESTROY_CLIENTID.", status, clp->cl_hostname);
6201 static int nfs4_proc_destroy_clientid(struct nfs_client *clp,
6202 struct rpc_cred *cred)
6207 for (loop = NFS4_MAX_LOOP_ON_RECOVER; loop != 0; loop--) {
6208 ret = _nfs4_proc_destroy_clientid(clp, cred);
6210 case -NFS4ERR_DELAY:
6211 case -NFS4ERR_CLIENTID_BUSY:
6221 int nfs4_destroy_clientid(struct nfs_client *clp)
6223 struct rpc_cred *cred;
6226 if (clp->cl_mvops->minor_version < 1)
6228 if (clp->cl_exchange_flags == 0)
6230 if (clp->cl_preserve_clid)
6232 cred = nfs4_get_clid_cred(clp);
6233 ret = nfs4_proc_destroy_clientid(clp, cred);
6238 case -NFS4ERR_STALE_CLIENTID:
6239 clp->cl_exchange_flags = 0;
6245 struct nfs4_get_lease_time_data {
6246 struct nfs4_get_lease_time_args *args;
6247 struct nfs4_get_lease_time_res *res;
6248 struct nfs_client *clp;
6251 static void nfs4_get_lease_time_prepare(struct rpc_task *task,
6254 struct nfs4_get_lease_time_data *data =
6255 (struct nfs4_get_lease_time_data *)calldata;
6257 dprintk("--> %s\n", __func__);
6258 /* just setup sequence, do not trigger session recovery
6259 since we're invoked within one */
6260 nfs41_setup_sequence(data->clp->cl_session,
6261 &data->args->la_seq_args,
6262 &data->res->lr_seq_res,
6264 dprintk("<-- %s\n", __func__);
6268 * Called from nfs4_state_manager thread for session setup, so don't recover
6269 * from sequence operation or clientid errors.
6271 static void nfs4_get_lease_time_done(struct rpc_task *task, void *calldata)
6273 struct nfs4_get_lease_time_data *data =
6274 (struct nfs4_get_lease_time_data *)calldata;
6276 dprintk("--> %s\n", __func__);
6277 if (!nfs41_sequence_done(task, &data->res->lr_seq_res))
6279 switch (task->tk_status) {
6280 case -NFS4ERR_DELAY:
6281 case -NFS4ERR_GRACE:
6282 dprintk("%s Retry: tk_status %d\n", __func__, task->tk_status);
6283 rpc_delay(task, NFS4_POLL_RETRY_MIN);
6284 task->tk_status = 0;
6286 case -NFS4ERR_RETRY_UNCACHED_REP:
6287 rpc_restart_call_prepare(task);
6290 dprintk("<-- %s\n", __func__);
6293 static const struct rpc_call_ops nfs4_get_lease_time_ops = {
6294 .rpc_call_prepare = nfs4_get_lease_time_prepare,
6295 .rpc_call_done = nfs4_get_lease_time_done,
6298 int nfs4_proc_get_lease_time(struct nfs_client *clp, struct nfs_fsinfo *fsinfo)
6300 struct rpc_task *task;
6301 struct nfs4_get_lease_time_args args;
6302 struct nfs4_get_lease_time_res res = {
6303 .lr_fsinfo = fsinfo,
6305 struct nfs4_get_lease_time_data data = {
6310 struct rpc_message msg = {
6311 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GET_LEASE_TIME],
6315 struct rpc_task_setup task_setup = {
6316 .rpc_client = clp->cl_rpcclient,
6317 .rpc_message = &msg,
6318 .callback_ops = &nfs4_get_lease_time_ops,
6319 .callback_data = &data,
6320 .flags = RPC_TASK_TIMEOUT,
6324 nfs4_init_sequence(&args.la_seq_args, &res.lr_seq_res, 0);
6325 nfs4_set_sequence_privileged(&args.la_seq_args);
6326 dprintk("--> %s\n", __func__);
6327 task = rpc_run_task(&task_setup);
6330 status = PTR_ERR(task);
6332 status = task->tk_status;
6335 dprintk("<-- %s return %d\n", __func__, status);
6341 * Initialize the values to be used by the client in CREATE_SESSION
6342 * If nfs4_init_session set the fore channel request and response sizes,
6345 * Set the back channel max_resp_sz_cached to zero to force the client to
6346 * always set csa_cachethis to FALSE because the current implementation
6347 * of the back channel DRC only supports caching the CB_SEQUENCE operation.
6349 static void nfs4_init_channel_attrs(struct nfs41_create_session_args *args)
6351 unsigned int max_rqst_sz, max_resp_sz;
6353 max_rqst_sz = NFS_MAX_FILE_IO_SIZE + nfs41_maxwrite_overhead;
6354 max_resp_sz = NFS_MAX_FILE_IO_SIZE + nfs41_maxread_overhead;
6356 /* Fore channel attributes */
6357 args->fc_attrs.max_rqst_sz = max_rqst_sz;
6358 args->fc_attrs.max_resp_sz = max_resp_sz;
6359 args->fc_attrs.max_ops = NFS4_MAX_OPS;
6360 args->fc_attrs.max_reqs = max_session_slots;
6362 dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u "
6363 "max_ops=%u max_reqs=%u\n",
6365 args->fc_attrs.max_rqst_sz, args->fc_attrs.max_resp_sz,
6366 args->fc_attrs.max_ops, args->fc_attrs.max_reqs);
6368 /* Back channel attributes */
6369 args->bc_attrs.max_rqst_sz = PAGE_SIZE;
6370 args->bc_attrs.max_resp_sz = PAGE_SIZE;
6371 args->bc_attrs.max_resp_sz_cached = 0;
6372 args->bc_attrs.max_ops = NFS4_MAX_BACK_CHANNEL_OPS;
6373 args->bc_attrs.max_reqs = 1;
6375 dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u "
6376 "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n",
6378 args->bc_attrs.max_rqst_sz, args->bc_attrs.max_resp_sz,
6379 args->bc_attrs.max_resp_sz_cached, args->bc_attrs.max_ops,
6380 args->bc_attrs.max_reqs);
6383 static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args *args, struct nfs4_session *session)
6385 struct nfs4_channel_attrs *sent = &args->fc_attrs;
6386 struct nfs4_channel_attrs *rcvd = &session->fc_attrs;
6388 if (rcvd->max_resp_sz > sent->max_resp_sz)
6391 * Our requested max_ops is the minimum we need; we're not
6392 * prepared to break up compounds into smaller pieces than that.
6393 * So, no point even trying to continue if the server won't
6396 if (rcvd->max_ops < sent->max_ops)
6398 if (rcvd->max_reqs == 0)
6400 if (rcvd->max_reqs > NFS4_MAX_SLOT_TABLE)
6401 rcvd->max_reqs = NFS4_MAX_SLOT_TABLE;
6405 static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args *args, struct nfs4_session *session)
6407 struct nfs4_channel_attrs *sent = &args->bc_attrs;
6408 struct nfs4_channel_attrs *rcvd = &session->bc_attrs;
6410 if (rcvd->max_rqst_sz > sent->max_rqst_sz)
6412 if (rcvd->max_resp_sz < sent->max_resp_sz)
6414 if (rcvd->max_resp_sz_cached > sent->max_resp_sz_cached)
6416 /* These would render the backchannel useless: */
6417 if (rcvd->max_ops != sent->max_ops)
6419 if (rcvd->max_reqs != sent->max_reqs)
6424 static int nfs4_verify_channel_attrs(struct nfs41_create_session_args *args,
6425 struct nfs4_session *session)
6429 ret = nfs4_verify_fore_channel_attrs(args, session);
6432 return nfs4_verify_back_channel_attrs(args, session);
6435 static int _nfs4_proc_create_session(struct nfs_client *clp,
6436 struct rpc_cred *cred)
6438 struct nfs4_session *session = clp->cl_session;
6439 struct nfs41_create_session_args args = {
6441 .cb_program = NFS4_CALLBACK,
6443 struct nfs41_create_session_res res = {
6446 struct rpc_message msg = {
6447 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE_SESSION],
6454 nfs4_init_channel_attrs(&args);
6455 args.flags = (SESSION4_PERSIST | SESSION4_BACK_CHAN);
6457 status = rpc_call_sync(session->clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT);
6458 trace_nfs4_create_session(clp, status);
6461 /* Verify the session's negotiated channel_attrs values */
6462 status = nfs4_verify_channel_attrs(&args, session);
6463 /* Increment the clientid slot sequence id */
6471 * Issues a CREATE_SESSION operation to the server.
6472 * It is the responsibility of the caller to verify the session is
6473 * expired before calling this routine.
6475 int nfs4_proc_create_session(struct nfs_client *clp, struct rpc_cred *cred)
6479 struct nfs4_session *session = clp->cl_session;
6481 dprintk("--> %s clp=%p session=%p\n", __func__, clp, session);
6483 status = _nfs4_proc_create_session(clp, cred);
6487 /* Init or reset the session slot tables */
6488 status = nfs4_setup_session_slot_tables(session);
6489 dprintk("slot table setup returned %d\n", status);
6493 ptr = (unsigned *)&session->sess_id.data[0];
6494 dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__,
6495 clp->cl_seqid, ptr[0], ptr[1], ptr[2], ptr[3]);
6497 dprintk("<-- %s\n", __func__);
6502 * Issue the over-the-wire RPC DESTROY_SESSION.
6503 * The caller must serialize access to this routine.
6505 int nfs4_proc_destroy_session(struct nfs4_session *session,
6506 struct rpc_cred *cred)
6508 struct rpc_message msg = {
6509 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DESTROY_SESSION],
6510 .rpc_argp = session,
6515 dprintk("--> nfs4_proc_destroy_session\n");
6517 /* session is still being setup */
6518 if (session->clp->cl_cons_state != NFS_CS_READY)
6521 status = rpc_call_sync(session->clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT);
6522 trace_nfs4_destroy_session(session->clp, status);
6525 dprintk("NFS: Got error %d from the server on DESTROY_SESSION. "
6526 "Session has been destroyed regardless...\n", status);
6528 dprintk("<-- nfs4_proc_destroy_session\n");
6533 * Renew the cl_session lease.
6535 struct nfs4_sequence_data {
6536 struct nfs_client *clp;
6537 struct nfs4_sequence_args args;
6538 struct nfs4_sequence_res res;
6541 static void nfs41_sequence_release(void *data)
6543 struct nfs4_sequence_data *calldata = data;
6544 struct nfs_client *clp = calldata->clp;
6546 if (atomic_read(&clp->cl_count) > 1)
6547 nfs4_schedule_state_renewal(clp);
6548 nfs_put_client(clp);
6552 static int nfs41_sequence_handle_errors(struct rpc_task *task, struct nfs_client *clp)
6554 switch(task->tk_status) {
6555 case -NFS4ERR_DELAY:
6556 rpc_delay(task, NFS4_POLL_RETRY_MAX);
6559 nfs4_schedule_lease_recovery(clp);
6564 static void nfs41_sequence_call_done(struct rpc_task *task, void *data)
6566 struct nfs4_sequence_data *calldata = data;
6567 struct nfs_client *clp = calldata->clp;
6569 if (!nfs41_sequence_done(task, task->tk_msg.rpc_resp))
6572 trace_nfs4_sequence(clp, task->tk_status);
6573 if (task->tk_status < 0) {
6574 dprintk("%s ERROR %d\n", __func__, task->tk_status);
6575 if (atomic_read(&clp->cl_count) == 1)
6578 if (nfs41_sequence_handle_errors(task, clp) == -EAGAIN) {
6579 rpc_restart_call_prepare(task);
6583 dprintk("%s rpc_cred %p\n", __func__, task->tk_msg.rpc_cred);
6585 dprintk("<-- %s\n", __func__);
6588 static void nfs41_sequence_prepare(struct rpc_task *task, void *data)
6590 struct nfs4_sequence_data *calldata = data;
6591 struct nfs_client *clp = calldata->clp;
6592 struct nfs4_sequence_args *args;
6593 struct nfs4_sequence_res *res;
6595 args = task->tk_msg.rpc_argp;
6596 res = task->tk_msg.rpc_resp;
6598 nfs41_setup_sequence(clp->cl_session, args, res, task);
6601 static const struct rpc_call_ops nfs41_sequence_ops = {
6602 .rpc_call_done = nfs41_sequence_call_done,
6603 .rpc_call_prepare = nfs41_sequence_prepare,
6604 .rpc_release = nfs41_sequence_release,
6607 static struct rpc_task *_nfs41_proc_sequence(struct nfs_client *clp,
6608 struct rpc_cred *cred,
6611 struct nfs4_sequence_data *calldata;
6612 struct rpc_message msg = {
6613 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SEQUENCE],
6616 struct rpc_task_setup task_setup_data = {
6617 .rpc_client = clp->cl_rpcclient,
6618 .rpc_message = &msg,
6619 .callback_ops = &nfs41_sequence_ops,
6620 .flags = RPC_TASK_ASYNC | RPC_TASK_TIMEOUT,
6623 if (!atomic_inc_not_zero(&clp->cl_count))
6624 return ERR_PTR(-EIO);
6625 calldata = kzalloc(sizeof(*calldata), GFP_NOFS);
6626 if (calldata == NULL) {
6627 nfs_put_client(clp);
6628 return ERR_PTR(-ENOMEM);
6630 nfs4_init_sequence(&calldata->args, &calldata->res, 0);
6632 nfs4_set_sequence_privileged(&calldata->args);
6633 msg.rpc_argp = &calldata->args;
6634 msg.rpc_resp = &calldata->res;
6635 calldata->clp = clp;
6636 task_setup_data.callback_data = calldata;
6638 return rpc_run_task(&task_setup_data);
6641 static int nfs41_proc_async_sequence(struct nfs_client *clp, struct rpc_cred *cred, unsigned renew_flags)
6643 struct rpc_task *task;
6646 if ((renew_flags & NFS4_RENEW_TIMEOUT) == 0)
6648 task = _nfs41_proc_sequence(clp, cred, false);
6650 ret = PTR_ERR(task);
6652 rpc_put_task_async(task);
6653 dprintk("<-- %s status=%d\n", __func__, ret);
6657 static int nfs4_proc_sequence(struct nfs_client *clp, struct rpc_cred *cred)
6659 struct rpc_task *task;
6662 task = _nfs41_proc_sequence(clp, cred, true);
6664 ret = PTR_ERR(task);
6667 ret = rpc_wait_for_completion_task(task);
6669 struct nfs4_sequence_res *res = task->tk_msg.rpc_resp;
6671 if (task->tk_status == 0)
6672 nfs41_handle_sequence_flag_errors(clp, res->sr_status_flags);
6673 ret = task->tk_status;
6677 dprintk("<-- %s status=%d\n", __func__, ret);
6681 struct nfs4_reclaim_complete_data {
6682 struct nfs_client *clp;
6683 struct nfs41_reclaim_complete_args arg;
6684 struct nfs41_reclaim_complete_res res;
6687 static void nfs4_reclaim_complete_prepare(struct rpc_task *task, void *data)
6689 struct nfs4_reclaim_complete_data *calldata = data;
6691 nfs41_setup_sequence(calldata->clp->cl_session,
6692 &calldata->arg.seq_args,
6693 &calldata->res.seq_res,
6697 static int nfs41_reclaim_complete_handle_errors(struct rpc_task *task, struct nfs_client *clp)
6699 switch(task->tk_status) {
6701 case -NFS4ERR_COMPLETE_ALREADY:
6702 case -NFS4ERR_WRONG_CRED: /* What to do here? */
6704 case -NFS4ERR_DELAY:
6705 rpc_delay(task, NFS4_POLL_RETRY_MAX);
6707 case -NFS4ERR_RETRY_UNCACHED_REP:
6710 nfs4_schedule_lease_recovery(clp);
6715 static void nfs4_reclaim_complete_done(struct rpc_task *task, void *data)
6717 struct nfs4_reclaim_complete_data *calldata = data;
6718 struct nfs_client *clp = calldata->clp;
6719 struct nfs4_sequence_res *res = &calldata->res.seq_res;
6721 dprintk("--> %s\n", __func__);
6722 if (!nfs41_sequence_done(task, res))
6725 trace_nfs4_reclaim_complete(clp, task->tk_status);
6726 if (nfs41_reclaim_complete_handle_errors(task, clp) == -EAGAIN) {
6727 rpc_restart_call_prepare(task);
6730 dprintk("<-- %s\n", __func__);
6733 static void nfs4_free_reclaim_complete_data(void *data)
6735 struct nfs4_reclaim_complete_data *calldata = data;
6740 static const struct rpc_call_ops nfs4_reclaim_complete_call_ops = {
6741 .rpc_call_prepare = nfs4_reclaim_complete_prepare,
6742 .rpc_call_done = nfs4_reclaim_complete_done,
6743 .rpc_release = nfs4_free_reclaim_complete_data,
6747 * Issue a global reclaim complete.
6749 static int nfs41_proc_reclaim_complete(struct nfs_client *clp,
6750 struct rpc_cred *cred)
6752 struct nfs4_reclaim_complete_data *calldata;
6753 struct rpc_task *task;
6754 struct rpc_message msg = {
6755 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RECLAIM_COMPLETE],
6758 struct rpc_task_setup task_setup_data = {
6759 .rpc_client = clp->cl_rpcclient,
6760 .rpc_message = &msg,
6761 .callback_ops = &nfs4_reclaim_complete_call_ops,
6762 .flags = RPC_TASK_ASYNC,
6764 int status = -ENOMEM;
6766 dprintk("--> %s\n", __func__);
6767 calldata = kzalloc(sizeof(*calldata), GFP_NOFS);
6768 if (calldata == NULL)
6770 calldata->clp = clp;
6771 calldata->arg.one_fs = 0;
6773 nfs4_init_sequence(&calldata->arg.seq_args, &calldata->res.seq_res, 0);
6774 nfs4_set_sequence_privileged(&calldata->arg.seq_args);
6775 msg.rpc_argp = &calldata->arg;
6776 msg.rpc_resp = &calldata->res;
6777 task_setup_data.callback_data = calldata;
6778 task = rpc_run_task(&task_setup_data);
6780 status = PTR_ERR(task);
6783 status = nfs4_wait_for_completion_rpc_task(task);
6785 status = task->tk_status;
6789 dprintk("<-- %s status=%d\n", __func__, status);
6794 nfs4_layoutget_prepare(struct rpc_task *task, void *calldata)
6796 struct nfs4_layoutget *lgp = calldata;
6797 struct nfs_server *server = NFS_SERVER(lgp->args.inode);
6798 struct nfs4_session *session = nfs4_get_session(server);
6800 dprintk("--> %s\n", __func__);
6801 /* Note the is a race here, where a CB_LAYOUTRECALL can come in
6802 * right now covering the LAYOUTGET we are about to send.
6803 * However, that is not so catastrophic, and there seems
6804 * to be no way to prevent it completely.
6806 if (nfs41_setup_sequence(session, &lgp->args.seq_args,
6807 &lgp->res.seq_res, task))
6809 if (pnfs_choose_layoutget_stateid(&lgp->args.stateid,
6810 NFS_I(lgp->args.inode)->layout,
6811 lgp->args.ctx->state)) {
6812 rpc_exit(task, NFS4_OK);
6816 static void nfs4_layoutget_done(struct rpc_task *task, void *calldata)
6818 struct nfs4_layoutget *lgp = calldata;
6819 struct inode *inode = lgp->args.inode;
6820 struct nfs_server *server = NFS_SERVER(inode);
6821 struct pnfs_layout_hdr *lo;
6822 struct nfs4_state *state = NULL;
6823 unsigned long timeo, giveup;
6825 dprintk("--> %s\n", __func__);
6827 if (!nfs41_sequence_done(task, &lgp->res.seq_res))
6830 switch (task->tk_status) {
6833 case -NFS4ERR_LAYOUTTRYLATER:
6834 case -NFS4ERR_RECALLCONFLICT:
6835 timeo = rpc_get_timeout(task->tk_client);
6836 giveup = lgp->args.timestamp + timeo;
6837 if (time_after(giveup, jiffies))
6838 task->tk_status = -NFS4ERR_DELAY;
6840 case -NFS4ERR_EXPIRED:
6841 case -NFS4ERR_BAD_STATEID:
6842 spin_lock(&inode->i_lock);
6843 lo = NFS_I(inode)->layout;
6844 if (!lo || list_empty(&lo->plh_segs)) {
6845 spin_unlock(&inode->i_lock);
6846 /* If the open stateid was bad, then recover it. */
6847 state = lgp->args.ctx->state;
6851 pnfs_mark_matching_lsegs_invalid(lo, &head, NULL);
6852 spin_unlock(&inode->i_lock);
6853 /* Mark the bad layout state as invalid, then
6854 * retry using the open stateid. */
6855 pnfs_free_lseg_list(&head);
6858 if (nfs4_async_handle_error(task, server, state) == -EAGAIN)
6859 rpc_restart_call_prepare(task);
6861 dprintk("<-- %s\n", __func__);
6864 static size_t max_response_pages(struct nfs_server *server)
6866 u32 max_resp_sz = server->nfs_client->cl_session->fc_attrs.max_resp_sz;
6867 return nfs_page_array_len(0, max_resp_sz);
6870 static void nfs4_free_pages(struct page **pages, size_t size)
6877 for (i = 0; i < size; i++) {
6880 __free_page(pages[i]);
6885 static struct page **nfs4_alloc_pages(size_t size, gfp_t gfp_flags)
6887 struct page **pages;
6890 pages = kcalloc(size, sizeof(struct page *), gfp_flags);
6892 dprintk("%s: can't alloc array of %zu pages\n", __func__, size);
6896 for (i = 0; i < size; i++) {
6897 pages[i] = alloc_page(gfp_flags);
6899 dprintk("%s: failed to allocate page\n", __func__);
6900 nfs4_free_pages(pages, size);
6908 static void nfs4_layoutget_release(void *calldata)
6910 struct nfs4_layoutget *lgp = calldata;
6911 struct inode *inode = lgp->args.inode;
6912 struct nfs_server *server = NFS_SERVER(inode);
6913 size_t max_pages = max_response_pages(server);
6915 dprintk("--> %s\n", __func__);
6916 nfs4_free_pages(lgp->args.layout.pages, max_pages);
6917 pnfs_put_layout_hdr(NFS_I(inode)->layout);
6918 put_nfs_open_context(lgp->args.ctx);
6920 dprintk("<-- %s\n", __func__);
6923 static const struct rpc_call_ops nfs4_layoutget_call_ops = {
6924 .rpc_call_prepare = nfs4_layoutget_prepare,
6925 .rpc_call_done = nfs4_layoutget_done,
6926 .rpc_release = nfs4_layoutget_release,
6929 struct pnfs_layout_segment *
6930 nfs4_proc_layoutget(struct nfs4_layoutget *lgp, gfp_t gfp_flags)
6932 struct inode *inode = lgp->args.inode;
6933 struct nfs_server *server = NFS_SERVER(inode);
6934 size_t max_pages = max_response_pages(server);
6935 struct rpc_task *task;
6936 struct rpc_message msg = {
6937 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTGET],
6938 .rpc_argp = &lgp->args,
6939 .rpc_resp = &lgp->res,
6940 .rpc_cred = lgp->cred,
6942 struct rpc_task_setup task_setup_data = {
6943 .rpc_client = server->client,
6944 .rpc_message = &msg,
6945 .callback_ops = &nfs4_layoutget_call_ops,
6946 .callback_data = lgp,
6947 .flags = RPC_TASK_ASYNC,
6949 struct pnfs_layout_segment *lseg = NULL;
6952 dprintk("--> %s\n", __func__);
6954 lgp->args.layout.pages = nfs4_alloc_pages(max_pages, gfp_flags);
6955 if (!lgp->args.layout.pages) {
6956 nfs4_layoutget_release(lgp);
6957 return ERR_PTR(-ENOMEM);
6959 lgp->args.layout.pglen = max_pages * PAGE_SIZE;
6960 lgp->args.timestamp = jiffies;
6962 lgp->res.layoutp = &lgp->args.layout;
6963 lgp->res.seq_res.sr_slot = NULL;
6964 nfs4_init_sequence(&lgp->args.seq_args, &lgp->res.seq_res, 0);
6966 /* nfs4_layoutget_release calls pnfs_put_layout_hdr */
6967 pnfs_get_layout_hdr(NFS_I(inode)->layout);
6969 task = rpc_run_task(&task_setup_data);
6971 return ERR_CAST(task);
6972 status = nfs4_wait_for_completion_rpc_task(task);
6974 status = task->tk_status;
6975 trace_nfs4_layoutget(lgp->args.ctx,
6979 /* if layoutp->len is 0, nfs4_layoutget_prepare called rpc_exit */
6980 if (status == 0 && lgp->res.layoutp->len)
6981 lseg = pnfs_layout_process(lgp);
6983 dprintk("<-- %s status=%d\n", __func__, status);
6985 return ERR_PTR(status);
6990 nfs4_layoutreturn_prepare(struct rpc_task *task, void *calldata)
6992 struct nfs4_layoutreturn *lrp = calldata;
6994 dprintk("--> %s\n", __func__);
6995 nfs41_setup_sequence(lrp->clp->cl_session,
6996 &lrp->args.seq_args,
7001 static void nfs4_layoutreturn_done(struct rpc_task *task, void *calldata)
7003 struct nfs4_layoutreturn *lrp = calldata;
7004 struct nfs_server *server;
7006 dprintk("--> %s\n", __func__);
7008 if (!nfs41_sequence_done(task, &lrp->res.seq_res))
7011 server = NFS_SERVER(lrp->args.inode);
7012 if (nfs4_async_handle_error(task, server, NULL) == -EAGAIN) {
7013 rpc_restart_call_prepare(task);
7016 dprintk("<-- %s\n", __func__);
7019 static void nfs4_layoutreturn_release(void *calldata)
7021 struct nfs4_layoutreturn *lrp = calldata;
7022 struct pnfs_layout_hdr *lo = lrp->args.layout;
7024 dprintk("--> %s\n", __func__);
7025 spin_lock(&lo->plh_inode->i_lock);
7026 if (lrp->res.lrs_present)
7027 pnfs_set_layout_stateid(lo, &lrp->res.stateid, true);
7028 lo->plh_block_lgets--;
7029 spin_unlock(&lo->plh_inode->i_lock);
7030 pnfs_put_layout_hdr(lrp->args.layout);
7032 dprintk("<-- %s\n", __func__);
7035 static const struct rpc_call_ops nfs4_layoutreturn_call_ops = {
7036 .rpc_call_prepare = nfs4_layoutreturn_prepare,
7037 .rpc_call_done = nfs4_layoutreturn_done,
7038 .rpc_release = nfs4_layoutreturn_release,
7041 int nfs4_proc_layoutreturn(struct nfs4_layoutreturn *lrp)
7043 struct rpc_task *task;
7044 struct rpc_message msg = {
7045 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTRETURN],
7046 .rpc_argp = &lrp->args,
7047 .rpc_resp = &lrp->res,
7048 .rpc_cred = lrp->cred,
7050 struct rpc_task_setup task_setup_data = {
7051 .rpc_client = NFS_SERVER(lrp->args.inode)->client,
7052 .rpc_message = &msg,
7053 .callback_ops = &nfs4_layoutreturn_call_ops,
7054 .callback_data = lrp,
7058 dprintk("--> %s\n", __func__);
7059 nfs4_init_sequence(&lrp->args.seq_args, &lrp->res.seq_res, 1);
7060 task = rpc_run_task(&task_setup_data);
7062 return PTR_ERR(task);
7063 status = task->tk_status;
7064 trace_nfs4_layoutreturn(lrp->args.inode, status);
7065 dprintk("<-- %s status=%d\n", __func__, status);
7071 * Retrieve the list of Data Server devices from the MDS.
7073 static int _nfs4_getdevicelist(struct nfs_server *server,
7074 const struct nfs_fh *fh,
7075 struct pnfs_devicelist *devlist)
7077 struct nfs4_getdevicelist_args args = {
7079 .layoutclass = server->pnfs_curr_ld->id,
7081 struct nfs4_getdevicelist_res res = {
7084 struct rpc_message msg = {
7085 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETDEVICELIST],
7091 dprintk("--> %s\n", __func__);
7092 status = nfs4_call_sync(server->client, server, &msg, &args.seq_args,
7094 dprintk("<-- %s status=%d\n", __func__, status);
7098 int nfs4_proc_getdevicelist(struct nfs_server *server,
7099 const struct nfs_fh *fh,
7100 struct pnfs_devicelist *devlist)
7102 struct nfs4_exception exception = { };
7106 err = nfs4_handle_exception(server,
7107 _nfs4_getdevicelist(server, fh, devlist),
7109 } while (exception.retry);
7111 dprintk("%s: err=%d, num_devs=%u\n", __func__,
7112 err, devlist->num_devs);
7116 EXPORT_SYMBOL_GPL(nfs4_proc_getdevicelist);
7119 _nfs4_proc_getdeviceinfo(struct nfs_server *server,
7120 struct pnfs_device *pdev,
7121 struct rpc_cred *cred)
7123 struct nfs4_getdeviceinfo_args args = {
7126 struct nfs4_getdeviceinfo_res res = {
7129 struct rpc_message msg = {
7130 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETDEVICEINFO],
7137 dprintk("--> %s\n", __func__);
7138 status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0);
7139 dprintk("<-- %s status=%d\n", __func__, status);
7144 int nfs4_proc_getdeviceinfo(struct nfs_server *server,
7145 struct pnfs_device *pdev,
7146 struct rpc_cred *cred)
7148 struct nfs4_exception exception = { };
7152 err = nfs4_handle_exception(server,
7153 _nfs4_proc_getdeviceinfo(server, pdev, cred),
7155 } while (exception.retry);
7158 EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo);
7160 static void nfs4_layoutcommit_prepare(struct rpc_task *task, void *calldata)
7162 struct nfs4_layoutcommit_data *data = calldata;
7163 struct nfs_server *server = NFS_SERVER(data->args.inode);
7164 struct nfs4_session *session = nfs4_get_session(server);
7166 nfs41_setup_sequence(session,
7167 &data->args.seq_args,
7173 nfs4_layoutcommit_done(struct rpc_task *task, void *calldata)
7175 struct nfs4_layoutcommit_data *data = calldata;
7176 struct nfs_server *server = NFS_SERVER(data->args.inode);
7178 if (!nfs41_sequence_done(task, &data->res.seq_res))
7181 switch (task->tk_status) { /* Just ignore these failures */
7182 case -NFS4ERR_DELEG_REVOKED: /* layout was recalled */
7183 case -NFS4ERR_BADIOMODE: /* no IOMODE_RW layout for range */
7184 case -NFS4ERR_BADLAYOUT: /* no layout */
7185 case -NFS4ERR_GRACE: /* loca_recalim always false */
7186 task->tk_status = 0;
7189 nfs_post_op_update_inode_force_wcc(data->args.inode,
7193 if (nfs4_async_handle_error(task, server, NULL) == -EAGAIN) {
7194 rpc_restart_call_prepare(task);
7200 static void nfs4_layoutcommit_release(void *calldata)
7202 struct nfs4_layoutcommit_data *data = calldata;
7204 pnfs_cleanup_layoutcommit(data);
7205 put_rpccred(data->cred);
7209 static const struct rpc_call_ops nfs4_layoutcommit_ops = {
7210 .rpc_call_prepare = nfs4_layoutcommit_prepare,
7211 .rpc_call_done = nfs4_layoutcommit_done,
7212 .rpc_release = nfs4_layoutcommit_release,
7216 nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data *data, bool sync)
7218 struct rpc_message msg = {
7219 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTCOMMIT],
7220 .rpc_argp = &data->args,
7221 .rpc_resp = &data->res,
7222 .rpc_cred = data->cred,
7224 struct rpc_task_setup task_setup_data = {
7225 .task = &data->task,
7226 .rpc_client = NFS_CLIENT(data->args.inode),
7227 .rpc_message = &msg,
7228 .callback_ops = &nfs4_layoutcommit_ops,
7229 .callback_data = data,
7230 .flags = RPC_TASK_ASYNC,
7232 struct rpc_task *task;
7235 dprintk("NFS: %4d initiating layoutcommit call. sync %d "
7236 "lbw: %llu inode %lu\n",
7237 data->task.tk_pid, sync,
7238 data->args.lastbytewritten,
7239 data->args.inode->i_ino);
7241 nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 1);
7242 task = rpc_run_task(&task_setup_data);
7244 return PTR_ERR(task);
7247 status = nfs4_wait_for_completion_rpc_task(task);
7250 status = task->tk_status;
7251 trace_nfs4_layoutcommit(data->args.inode, status);
7253 dprintk("%s: status %d\n", __func__, status);
7259 * Use the state managment nfs_client cl_rpcclient, which uses krb5i (if
7260 * possible) as per RFC3530bis and RFC5661 Security Considerations sections
7263 _nfs41_proc_secinfo_no_name(struct nfs_server *server, struct nfs_fh *fhandle,
7264 struct nfs_fsinfo *info, struct nfs4_secinfo_flavors *flavors)
7266 struct nfs41_secinfo_no_name_args args = {
7267 .style = SECINFO_STYLE_CURRENT_FH,
7269 struct nfs4_secinfo_res res = {
7272 struct rpc_message msg = {
7273 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SECINFO_NO_NAME],
7277 return nfs4_call_sync(server->nfs_client->cl_rpcclient, server, &msg,
7278 &args.seq_args, &res.seq_res, 0);
7282 nfs41_proc_secinfo_no_name(struct nfs_server *server, struct nfs_fh *fhandle,
7283 struct nfs_fsinfo *info, struct nfs4_secinfo_flavors *flavors)
7285 struct nfs4_exception exception = { };
7288 err = _nfs41_proc_secinfo_no_name(server, fhandle, info, flavors);
7291 case -NFS4ERR_WRONGSEC:
7292 case -NFS4ERR_NOTSUPP:
7295 err = nfs4_handle_exception(server, err, &exception);
7297 } while (exception.retry);
7303 nfs41_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle,
7304 struct nfs_fsinfo *info)
7308 rpc_authflavor_t flavor;
7309 struct nfs4_secinfo_flavors *flavors;
7311 page = alloc_page(GFP_KERNEL);
7317 flavors = page_address(page);
7318 err = nfs41_proc_secinfo_no_name(server, fhandle, info, flavors);
7321 * Fall back on "guess and check" method if
7322 * the server doesn't support SECINFO_NO_NAME
7324 if (err == -NFS4ERR_WRONGSEC || err == -NFS4ERR_NOTSUPP) {
7325 err = nfs4_find_root_sec(server, fhandle, info);
7331 flavor = nfs_find_best_sec(flavors);
7333 err = nfs4_lookup_root_sec(server, fhandle, info, flavor);
7343 static int _nfs41_test_stateid(struct nfs_server *server,
7344 nfs4_stateid *stateid,
7345 struct rpc_cred *cred)
7348 struct nfs41_test_stateid_args args = {
7351 struct nfs41_test_stateid_res res;
7352 struct rpc_message msg = {
7353 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_TEST_STATEID],
7359 dprintk("NFS call test_stateid %p\n", stateid);
7360 nfs4_init_sequence(&args.seq_args, &res.seq_res, 0);
7361 nfs4_set_sequence_privileged(&args.seq_args);
7362 status = nfs4_call_sync_sequence(server->client, server, &msg,
7363 &args.seq_args, &res.seq_res);
7364 if (status != NFS_OK) {
7365 dprintk("NFS reply test_stateid: failed, %d\n", status);
7368 dprintk("NFS reply test_stateid: succeeded, %d\n", -res.status);
7373 * nfs41_test_stateid - perform a TEST_STATEID operation
7375 * @server: server / transport on which to perform the operation
7376 * @stateid: state ID to test
7379 * Returns NFS_OK if the server recognizes that "stateid" is valid.
7380 * Otherwise a negative NFS4ERR value is returned if the operation
7381 * failed or the state ID is not currently valid.
7383 static int nfs41_test_stateid(struct nfs_server *server,
7384 nfs4_stateid *stateid,
7385 struct rpc_cred *cred)
7387 struct nfs4_exception exception = { };
7390 err = _nfs41_test_stateid(server, stateid, cred);
7391 if (err != -NFS4ERR_DELAY)
7393 nfs4_handle_exception(server, err, &exception);
7394 } while (exception.retry);
7398 struct nfs_free_stateid_data {
7399 struct nfs_server *server;
7400 struct nfs41_free_stateid_args args;
7401 struct nfs41_free_stateid_res res;
7404 static void nfs41_free_stateid_prepare(struct rpc_task *task, void *calldata)
7406 struct nfs_free_stateid_data *data = calldata;
7407 nfs41_setup_sequence(nfs4_get_session(data->server),
7408 &data->args.seq_args,
7413 static void nfs41_free_stateid_done(struct rpc_task *task, void *calldata)
7415 struct nfs_free_stateid_data *data = calldata;
7417 nfs41_sequence_done(task, &data->res.seq_res);
7419 switch (task->tk_status) {
7420 case -NFS4ERR_DELAY:
7421 if (nfs4_async_handle_error(task, data->server, NULL) == -EAGAIN)
7422 rpc_restart_call_prepare(task);
7426 static void nfs41_free_stateid_release(void *calldata)
7431 static const struct rpc_call_ops nfs41_free_stateid_ops = {
7432 .rpc_call_prepare = nfs41_free_stateid_prepare,
7433 .rpc_call_done = nfs41_free_stateid_done,
7434 .rpc_release = nfs41_free_stateid_release,
7437 static struct rpc_task *_nfs41_free_stateid(struct nfs_server *server,
7438 nfs4_stateid *stateid,
7439 struct rpc_cred *cred,
7442 struct rpc_message msg = {
7443 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FREE_STATEID],
7446 struct rpc_task_setup task_setup = {
7447 .rpc_client = server->client,
7448 .rpc_message = &msg,
7449 .callback_ops = &nfs41_free_stateid_ops,
7450 .flags = RPC_TASK_ASYNC,
7452 struct nfs_free_stateid_data *data;
7454 dprintk("NFS call free_stateid %p\n", stateid);
7455 data = kmalloc(sizeof(*data), GFP_NOFS);
7457 return ERR_PTR(-ENOMEM);
7458 data->server = server;
7459 nfs4_stateid_copy(&data->args.stateid, stateid);
7461 task_setup.callback_data = data;
7463 msg.rpc_argp = &data->args;
7464 msg.rpc_resp = &data->res;
7465 nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 0);
7467 nfs4_set_sequence_privileged(&data->args.seq_args);
7469 return rpc_run_task(&task_setup);
7473 * nfs41_free_stateid - perform a FREE_STATEID operation
7475 * @server: server / transport on which to perform the operation
7476 * @stateid: state ID to release
7479 * Returns NFS_OK if the server freed "stateid". Otherwise a
7480 * negative NFS4ERR value is returned.
7482 static int nfs41_free_stateid(struct nfs_server *server,
7483 nfs4_stateid *stateid,
7484 struct rpc_cred *cred)
7486 struct rpc_task *task;
7489 task = _nfs41_free_stateid(server, stateid, cred, true);
7491 return PTR_ERR(task);
7492 ret = rpc_wait_for_completion_task(task);
7494 ret = task->tk_status;
7499 static int nfs41_free_lock_state(struct nfs_server *server, struct nfs4_lock_state *lsp)
7501 struct rpc_task *task;
7502 struct rpc_cred *cred = lsp->ls_state->owner->so_cred;
7504 task = _nfs41_free_stateid(server, &lsp->ls_stateid, cred, false);
7505 nfs4_free_lock_state(server, lsp);
7507 return PTR_ERR(task);
7512 static bool nfs41_match_stateid(const nfs4_stateid *s1,
7513 const nfs4_stateid *s2)
7515 if (memcmp(s1->other, s2->other, sizeof(s1->other)) != 0)
7518 if (s1->seqid == s2->seqid)
7520 if (s1->seqid == 0 || s2->seqid == 0)
7526 #endif /* CONFIG_NFS_V4_1 */
7528 static bool nfs4_match_stateid(const nfs4_stateid *s1,
7529 const nfs4_stateid *s2)
7531 return nfs4_stateid_match(s1, s2);
7535 static const struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops = {
7536 .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT,
7537 .state_flag_bit = NFS_STATE_RECLAIM_REBOOT,
7538 .recover_open = nfs4_open_reclaim,
7539 .recover_lock = nfs4_lock_reclaim,
7540 .establish_clid = nfs4_init_clientid,
7541 .detect_trunking = nfs40_discover_server_trunking,
7544 #if defined(CONFIG_NFS_V4_1)
7545 static const struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops = {
7546 .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT,
7547 .state_flag_bit = NFS_STATE_RECLAIM_REBOOT,
7548 .recover_open = nfs4_open_reclaim,
7549 .recover_lock = nfs4_lock_reclaim,
7550 .establish_clid = nfs41_init_clientid,
7551 .reclaim_complete = nfs41_proc_reclaim_complete,
7552 .detect_trunking = nfs41_discover_server_trunking,
7554 #endif /* CONFIG_NFS_V4_1 */
7556 static const struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops = {
7557 .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE,
7558 .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE,
7559 .recover_open = nfs4_open_expired,
7560 .recover_lock = nfs4_lock_expired,
7561 .establish_clid = nfs4_init_clientid,
7564 #if defined(CONFIG_NFS_V4_1)
7565 static const struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops = {
7566 .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE,
7567 .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE,
7568 .recover_open = nfs41_open_expired,
7569 .recover_lock = nfs41_lock_expired,
7570 .establish_clid = nfs41_init_clientid,
7572 #endif /* CONFIG_NFS_V4_1 */
7574 static const struct nfs4_state_maintenance_ops nfs40_state_renewal_ops = {
7575 .sched_state_renewal = nfs4_proc_async_renew,
7576 .get_state_renewal_cred_locked = nfs4_get_renew_cred_locked,
7577 .renew_lease = nfs4_proc_renew,
7580 #if defined(CONFIG_NFS_V4_1)
7581 static const struct nfs4_state_maintenance_ops nfs41_state_renewal_ops = {
7582 .sched_state_renewal = nfs41_proc_async_sequence,
7583 .get_state_renewal_cred_locked = nfs4_get_machine_cred_locked,
7584 .renew_lease = nfs4_proc_sequence,
7588 static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops = {
7590 .init_caps = NFS_CAP_READDIRPLUS
7591 | NFS_CAP_ATOMIC_OPEN
7592 | NFS_CAP_CHANGE_ATTR
7593 | NFS_CAP_POSIX_LOCK,
7594 .init_client = nfs40_init_client,
7595 .shutdown_client = nfs40_shutdown_client,
7596 .match_stateid = nfs4_match_stateid,
7597 .find_root_sec = nfs4_find_root_sec,
7598 .free_lock_state = nfs4_release_lockowner,
7599 .call_sync_ops = &nfs40_call_sync_ops,
7600 .reboot_recovery_ops = &nfs40_reboot_recovery_ops,
7601 .nograce_recovery_ops = &nfs40_nograce_recovery_ops,
7602 .state_renewal_ops = &nfs40_state_renewal_ops,
7605 #if defined(CONFIG_NFS_V4_1)
7606 static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops = {
7608 .init_caps = NFS_CAP_READDIRPLUS
7609 | NFS_CAP_ATOMIC_OPEN
7610 | NFS_CAP_CHANGE_ATTR
7611 | NFS_CAP_POSIX_LOCK
7612 | NFS_CAP_STATEID_NFSV41
7613 | NFS_CAP_ATOMIC_OPEN_V1,
7614 .init_client = nfs41_init_client,
7615 .shutdown_client = nfs41_shutdown_client,
7616 .match_stateid = nfs41_match_stateid,
7617 .find_root_sec = nfs41_find_root_sec,
7618 .free_lock_state = nfs41_free_lock_state,
7619 .call_sync_ops = &nfs41_call_sync_ops,
7620 .reboot_recovery_ops = &nfs41_reboot_recovery_ops,
7621 .nograce_recovery_ops = &nfs41_nograce_recovery_ops,
7622 .state_renewal_ops = &nfs41_state_renewal_ops,
7626 #if defined(CONFIG_NFS_V4_2)
7627 static const struct nfs4_minor_version_ops nfs_v4_2_minor_ops = {
7629 .init_caps = NFS_CAP_READDIRPLUS
7630 | NFS_CAP_ATOMIC_OPEN
7631 | NFS_CAP_CHANGE_ATTR
7632 | NFS_CAP_POSIX_LOCK
7633 | NFS_CAP_STATEID_NFSV41
7634 | NFS_CAP_ATOMIC_OPEN_V1,
7635 .init_client = nfs41_init_client,
7636 .shutdown_client = nfs41_shutdown_client,
7637 .match_stateid = nfs41_match_stateid,
7638 .find_root_sec = nfs41_find_root_sec,
7639 .free_lock_state = nfs41_free_lock_state,
7640 .call_sync_ops = &nfs41_call_sync_ops,
7641 .reboot_recovery_ops = &nfs41_reboot_recovery_ops,
7642 .nograce_recovery_ops = &nfs41_nograce_recovery_ops,
7643 .state_renewal_ops = &nfs41_state_renewal_ops,
7647 const struct nfs4_minor_version_ops *nfs_v4_minor_ops[] = {
7648 [0] = &nfs_v4_0_minor_ops,
7649 #if defined(CONFIG_NFS_V4_1)
7650 [1] = &nfs_v4_1_minor_ops,
7652 #if defined(CONFIG_NFS_V4_2)
7653 [2] = &nfs_v4_2_minor_ops,
7657 static const struct inode_operations nfs4_dir_inode_operations = {
7658 .create = nfs_create,
7659 .lookup = nfs_lookup,
7660 .atomic_open = nfs_atomic_open,
7662 .unlink = nfs_unlink,
7663 .symlink = nfs_symlink,
7667 .rename = nfs_rename,
7668 .permission = nfs_permission,
7669 .getattr = nfs_getattr,
7670 .setattr = nfs_setattr,
7671 .getxattr = generic_getxattr,
7672 .setxattr = generic_setxattr,
7673 .listxattr = generic_listxattr,
7674 .removexattr = generic_removexattr,
7677 static const struct inode_operations nfs4_file_inode_operations = {
7678 .permission = nfs_permission,
7679 .getattr = nfs_getattr,
7680 .setattr = nfs_setattr,
7681 .getxattr = generic_getxattr,
7682 .setxattr = generic_setxattr,
7683 .listxattr = generic_listxattr,
7684 .removexattr = generic_removexattr,
7687 const struct nfs_rpc_ops nfs_v4_clientops = {
7688 .version = 4, /* protocol version */
7689 .dentry_ops = &nfs4_dentry_operations,
7690 .dir_inode_ops = &nfs4_dir_inode_operations,
7691 .file_inode_ops = &nfs4_file_inode_operations,
7692 .file_ops = &nfs4_file_operations,
7693 .getroot = nfs4_proc_get_root,
7694 .submount = nfs4_submount,
7695 .try_mount = nfs4_try_mount,
7696 .getattr = nfs4_proc_getattr,
7697 .setattr = nfs4_proc_setattr,
7698 .lookup = nfs4_proc_lookup,
7699 .access = nfs4_proc_access,
7700 .readlink = nfs4_proc_readlink,
7701 .create = nfs4_proc_create,
7702 .remove = nfs4_proc_remove,
7703 .unlink_setup = nfs4_proc_unlink_setup,
7704 .unlink_rpc_prepare = nfs4_proc_unlink_rpc_prepare,
7705 .unlink_done = nfs4_proc_unlink_done,
7706 .rename = nfs4_proc_rename,
7707 .rename_setup = nfs4_proc_rename_setup,
7708 .rename_rpc_prepare = nfs4_proc_rename_rpc_prepare,
7709 .rename_done = nfs4_proc_rename_done,
7710 .link = nfs4_proc_link,
7711 .symlink = nfs4_proc_symlink,
7712 .mkdir = nfs4_proc_mkdir,
7713 .rmdir = nfs4_proc_remove,
7714 .readdir = nfs4_proc_readdir,
7715 .mknod = nfs4_proc_mknod,
7716 .statfs = nfs4_proc_statfs,
7717 .fsinfo = nfs4_proc_fsinfo,
7718 .pathconf = nfs4_proc_pathconf,
7719 .set_capabilities = nfs4_server_capabilities,
7720 .decode_dirent = nfs4_decode_dirent,
7721 .read_setup = nfs4_proc_read_setup,
7722 .read_pageio_init = pnfs_pageio_init_read,
7723 .read_rpc_prepare = nfs4_proc_read_rpc_prepare,
7724 .read_done = nfs4_read_done,
7725 .write_setup = nfs4_proc_write_setup,
7726 .write_pageio_init = pnfs_pageio_init_write,
7727 .write_rpc_prepare = nfs4_proc_write_rpc_prepare,
7728 .write_done = nfs4_write_done,
7729 .commit_setup = nfs4_proc_commit_setup,
7730 .commit_rpc_prepare = nfs4_proc_commit_rpc_prepare,
7731 .commit_done = nfs4_commit_done,
7732 .lock = nfs4_proc_lock,
7733 .clear_acl_cache = nfs4_zap_acl_attr,
7734 .close_context = nfs4_close_context,
7735 .open_context = nfs4_atomic_open,
7736 .have_delegation = nfs4_have_delegation,
7737 .return_delegation = nfs4_inode_return_delegation,
7738 .alloc_client = nfs4_alloc_client,
7739 .init_client = nfs4_init_client,
7740 .free_client = nfs4_free_client,
7741 .create_server = nfs4_create_server,
7742 .clone_server = nfs_clone_server,
7745 static const struct xattr_handler nfs4_xattr_nfs4_acl_handler = {
7746 .prefix = XATTR_NAME_NFSV4_ACL,
7747 .list = nfs4_xattr_list_nfs4_acl,
7748 .get = nfs4_xattr_get_nfs4_acl,
7749 .set = nfs4_xattr_set_nfs4_acl,
7752 const struct xattr_handler *nfs4_xattr_handlers[] = {
7753 &nfs4_xattr_nfs4_acl_handler,
7754 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
7755 &nfs4_xattr_nfs4_label_handler,