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 err = security_dentry_init_security(dentry, sattr->ia_mode,
109 &dentry->d_name, (void **)&label->label, &label->len);
116 nfs4_label_release_security(struct nfs4_label *label)
119 security_release_secctx(label->label, label->len);
121 static inline u32 *nfs4_bitmask(struct nfs_server *server, struct nfs4_label *label)
124 return server->attr_bitmask;
126 return server->attr_bitmask_nl;
129 static inline struct nfs4_label *
130 nfs4_label_init_security(struct inode *dir, struct dentry *dentry,
131 struct iattr *sattr, struct nfs4_label *l)
134 nfs4_label_release_security(struct nfs4_label *label)
137 nfs4_bitmask(struct nfs_server *server, struct nfs4_label *label)
138 { return server->attr_bitmask; }
141 /* Prevent leaks of NFSv4 errors into userland */
142 static int nfs4_map_errors(int err)
147 case -NFS4ERR_RESOURCE:
148 case -NFS4ERR_LAYOUTTRYLATER:
149 case -NFS4ERR_RECALLCONFLICT:
151 case -NFS4ERR_WRONGSEC:
152 case -NFS4ERR_WRONG_CRED:
154 case -NFS4ERR_BADOWNER:
155 case -NFS4ERR_BADNAME:
157 case -NFS4ERR_SHARE_DENIED:
159 case -NFS4ERR_MINOR_VERS_MISMATCH:
160 return -EPROTONOSUPPORT;
161 case -NFS4ERR_ACCESS:
163 case -NFS4ERR_FILE_OPEN:
166 dprintk("%s could not handle NFSv4 error %d\n",
174 * This is our standard bitmap for GETATTR requests.
176 const u32 nfs4_fattr_bitmap[3] = {
178 | FATTR4_WORD0_CHANGE
181 | FATTR4_WORD0_FILEID,
183 | FATTR4_WORD1_NUMLINKS
185 | FATTR4_WORD1_OWNER_GROUP
186 | FATTR4_WORD1_RAWDEV
187 | FATTR4_WORD1_SPACE_USED
188 | FATTR4_WORD1_TIME_ACCESS
189 | FATTR4_WORD1_TIME_METADATA
190 | FATTR4_WORD1_TIME_MODIFY,
191 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
192 FATTR4_WORD2_SECURITY_LABEL
196 static const u32 nfs4_pnfs_open_bitmap[3] = {
198 | FATTR4_WORD0_CHANGE
201 | FATTR4_WORD0_FILEID,
203 | FATTR4_WORD1_NUMLINKS
205 | FATTR4_WORD1_OWNER_GROUP
206 | FATTR4_WORD1_RAWDEV
207 | FATTR4_WORD1_SPACE_USED
208 | FATTR4_WORD1_TIME_ACCESS
209 | FATTR4_WORD1_TIME_METADATA
210 | FATTR4_WORD1_TIME_MODIFY,
211 FATTR4_WORD2_MDSTHRESHOLD
214 static const u32 nfs4_open_noattr_bitmap[3] = {
216 | FATTR4_WORD0_CHANGE
217 | FATTR4_WORD0_FILEID,
220 const u32 nfs4_statfs_bitmap[3] = {
221 FATTR4_WORD0_FILES_AVAIL
222 | FATTR4_WORD0_FILES_FREE
223 | FATTR4_WORD0_FILES_TOTAL,
224 FATTR4_WORD1_SPACE_AVAIL
225 | FATTR4_WORD1_SPACE_FREE
226 | FATTR4_WORD1_SPACE_TOTAL
229 const u32 nfs4_pathconf_bitmap[3] = {
231 | FATTR4_WORD0_MAXNAME,
235 const u32 nfs4_fsinfo_bitmap[3] = { FATTR4_WORD0_MAXFILESIZE
236 | FATTR4_WORD0_MAXREAD
237 | FATTR4_WORD0_MAXWRITE
238 | FATTR4_WORD0_LEASE_TIME,
239 FATTR4_WORD1_TIME_DELTA
240 | FATTR4_WORD1_FS_LAYOUT_TYPES,
241 FATTR4_WORD2_LAYOUT_BLKSIZE
244 const u32 nfs4_fs_locations_bitmap[3] = {
246 | FATTR4_WORD0_CHANGE
249 | FATTR4_WORD0_FILEID
250 | FATTR4_WORD0_FS_LOCATIONS,
252 | FATTR4_WORD1_NUMLINKS
254 | FATTR4_WORD1_OWNER_GROUP
255 | FATTR4_WORD1_RAWDEV
256 | FATTR4_WORD1_SPACE_USED
257 | FATTR4_WORD1_TIME_ACCESS
258 | FATTR4_WORD1_TIME_METADATA
259 | FATTR4_WORD1_TIME_MODIFY
260 | FATTR4_WORD1_MOUNTED_ON_FILEID,
263 static void nfs4_setup_readdir(u64 cookie, __be32 *verifier, struct dentry *dentry,
264 struct nfs4_readdir_arg *readdir)
269 readdir->cookie = cookie;
270 memcpy(&readdir->verifier, verifier, sizeof(readdir->verifier));
275 memset(&readdir->verifier, 0, sizeof(readdir->verifier));
280 * NFSv4 servers do not return entries for '.' and '..'
281 * Therefore, we fake these entries here. We let '.'
282 * have cookie 0 and '..' have cookie 1. Note that
283 * when talking to the server, we always send cookie 0
286 start = p = kmap_atomic(*readdir->pages);
289 *p++ = xdr_one; /* next */
290 *p++ = xdr_zero; /* cookie, first word */
291 *p++ = xdr_one; /* cookie, second word */
292 *p++ = xdr_one; /* entry len */
293 memcpy(p, ".\0\0\0", 4); /* entry */
295 *p++ = xdr_one; /* bitmap length */
296 *p++ = htonl(FATTR4_WORD0_FILEID); /* bitmap */
297 *p++ = htonl(8); /* attribute buffer length */
298 p = xdr_encode_hyper(p, NFS_FILEID(dentry->d_inode));
301 *p++ = xdr_one; /* next */
302 *p++ = xdr_zero; /* cookie, first word */
303 *p++ = xdr_two; /* cookie, second word */
304 *p++ = xdr_two; /* entry len */
305 memcpy(p, "..\0\0", 4); /* entry */
307 *p++ = xdr_one; /* bitmap length */
308 *p++ = htonl(FATTR4_WORD0_FILEID); /* bitmap */
309 *p++ = htonl(8); /* attribute buffer length */
310 p = xdr_encode_hyper(p, NFS_FILEID(dentry->d_parent->d_inode));
312 readdir->pgbase = (char *)p - (char *)start;
313 readdir->count -= readdir->pgbase;
314 kunmap_atomic(start);
317 static int nfs4_delay(struct rpc_clnt *clnt, long *timeout)
324 *timeout = NFS4_POLL_RETRY_MIN;
325 if (*timeout > NFS4_POLL_RETRY_MAX)
326 *timeout = NFS4_POLL_RETRY_MAX;
327 freezable_schedule_timeout_killable_unsafe(*timeout);
328 if (fatal_signal_pending(current))
334 /* This is the error handling routine for processes that are allowed
337 static int nfs4_handle_exception(struct nfs_server *server, int errorcode, struct nfs4_exception *exception)
339 struct nfs_client *clp = server->nfs_client;
340 struct nfs4_state *state = exception->state;
341 struct inode *inode = exception->inode;
344 exception->retry = 0;
348 case -NFS4ERR_OPENMODE:
349 if (inode && nfs4_have_delegation(inode, FMODE_READ)) {
350 nfs4_inode_return_delegation(inode);
351 exception->retry = 1;
356 ret = nfs4_schedule_stateid_recovery(server, state);
359 goto wait_on_recovery;
360 case -NFS4ERR_DELEG_REVOKED:
361 case -NFS4ERR_ADMIN_REVOKED:
362 case -NFS4ERR_BAD_STATEID:
363 if (inode != NULL && nfs4_have_delegation(inode, FMODE_READ)) {
364 nfs_remove_bad_delegation(inode);
365 exception->retry = 1;
370 ret = nfs4_schedule_stateid_recovery(server, state);
373 goto wait_on_recovery;
374 case -NFS4ERR_EXPIRED:
376 ret = nfs4_schedule_stateid_recovery(server, state);
380 case -NFS4ERR_STALE_STATEID:
381 case -NFS4ERR_STALE_CLIENTID:
382 nfs4_schedule_lease_recovery(clp);
383 goto wait_on_recovery;
385 ret = nfs4_schedule_migration_recovery(server);
388 goto wait_on_recovery;
389 case -NFS4ERR_LEASE_MOVED:
390 nfs4_schedule_lease_moved_recovery(clp);
391 goto wait_on_recovery;
392 #if defined(CONFIG_NFS_V4_1)
393 case -NFS4ERR_BADSESSION:
394 case -NFS4ERR_BADSLOT:
395 case -NFS4ERR_BAD_HIGH_SLOT:
396 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION:
397 case -NFS4ERR_DEADSESSION:
398 case -NFS4ERR_SEQ_FALSE_RETRY:
399 case -NFS4ERR_SEQ_MISORDERED:
400 dprintk("%s ERROR: %d Reset session\n", __func__,
402 nfs4_schedule_session_recovery(clp->cl_session, errorcode);
403 goto wait_on_recovery;
404 #endif /* defined(CONFIG_NFS_V4_1) */
405 case -NFS4ERR_FILE_OPEN:
406 if (exception->timeout > HZ) {
407 /* We have retried a decent amount, time to
415 ret = nfs4_delay(server->client, &exception->timeout);
418 case -NFS4ERR_RETRY_UNCACHED_REP:
419 case -NFS4ERR_OLD_STATEID:
420 exception->retry = 1;
422 case -NFS4ERR_BADOWNER:
423 /* The following works around a Linux server bug! */
424 case -NFS4ERR_BADNAME:
425 if (server->caps & NFS_CAP_UIDGID_NOMAP) {
426 server->caps &= ~NFS_CAP_UIDGID_NOMAP;
427 exception->retry = 1;
428 printk(KERN_WARNING "NFS: v4 server %s "
429 "does not accept raw "
431 "Reenabling the idmapper.\n",
432 server->nfs_client->cl_hostname);
435 /* We failed to handle the error */
436 return nfs4_map_errors(ret);
438 ret = nfs4_wait_clnt_recover(clp);
439 if (test_bit(NFS_MIG_FAILED, &server->mig_status))
442 exception->retry = 1;
447 * Return 'true' if 'clp' is using an rpc_client that is integrity protected
448 * or 'false' otherwise.
450 static bool _nfs4_is_integrity_protected(struct nfs_client *clp)
452 rpc_authflavor_t flavor = clp->cl_rpcclient->cl_auth->au_flavor;
454 if (flavor == RPC_AUTH_GSS_KRB5I ||
455 flavor == RPC_AUTH_GSS_KRB5P)
461 static void do_renew_lease(struct nfs_client *clp, unsigned long timestamp)
463 spin_lock(&clp->cl_lock);
464 if (time_before(clp->cl_last_renewal,timestamp))
465 clp->cl_last_renewal = timestamp;
466 spin_unlock(&clp->cl_lock);
469 static void renew_lease(const struct nfs_server *server, unsigned long timestamp)
471 do_renew_lease(server->nfs_client, timestamp);
474 struct nfs4_call_sync_data {
475 const struct nfs_server *seq_server;
476 struct nfs4_sequence_args *seq_args;
477 struct nfs4_sequence_res *seq_res;
480 static void nfs4_init_sequence(struct nfs4_sequence_args *args,
481 struct nfs4_sequence_res *res, int cache_reply)
483 args->sa_slot = NULL;
484 args->sa_cache_this = cache_reply;
485 args->sa_privileged = 0;
490 static void nfs4_set_sequence_privileged(struct nfs4_sequence_args *args)
492 args->sa_privileged = 1;
495 static int nfs40_setup_sequence(const struct nfs_server *server,
496 struct nfs4_sequence_args *args,
497 struct nfs4_sequence_res *res,
498 struct rpc_task *task)
500 struct nfs4_slot_table *tbl = server->nfs_client->cl_slot_tbl;
501 struct nfs4_slot *slot;
503 /* slot already allocated? */
504 if (res->sr_slot != NULL)
507 spin_lock(&tbl->slot_tbl_lock);
508 if (nfs4_slot_tbl_draining(tbl) && !args->sa_privileged)
511 slot = nfs4_alloc_slot(tbl);
513 if (slot == ERR_PTR(-ENOMEM))
514 task->tk_timeout = HZ >> 2;
517 spin_unlock(&tbl->slot_tbl_lock);
519 args->sa_slot = slot;
523 rpc_call_start(task);
527 if (args->sa_privileged)
528 rpc_sleep_on_priority(&tbl->slot_tbl_waitq, task,
529 NULL, RPC_PRIORITY_PRIVILEGED);
531 rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL);
532 spin_unlock(&tbl->slot_tbl_lock);
536 static int nfs40_sequence_done(struct rpc_task *task,
537 struct nfs4_sequence_res *res)
539 struct nfs4_slot *slot = res->sr_slot;
540 struct nfs4_slot_table *tbl;
546 spin_lock(&tbl->slot_tbl_lock);
547 if (!nfs41_wake_and_assign_slot(tbl, slot))
548 nfs4_free_slot(tbl, slot);
549 spin_unlock(&tbl->slot_tbl_lock);
556 #if defined(CONFIG_NFS_V4_1)
558 static void nfs41_sequence_free_slot(struct nfs4_sequence_res *res)
560 struct nfs4_session *session;
561 struct nfs4_slot_table *tbl;
562 struct nfs4_slot *slot = res->sr_slot;
563 bool send_new_highest_used_slotid = false;
566 session = tbl->session;
568 spin_lock(&tbl->slot_tbl_lock);
569 /* Be nice to the server: try to ensure that the last transmitted
570 * value for highest_user_slotid <= target_highest_slotid
572 if (tbl->highest_used_slotid > tbl->target_highest_slotid)
573 send_new_highest_used_slotid = true;
575 if (nfs41_wake_and_assign_slot(tbl, slot)) {
576 send_new_highest_used_slotid = false;
579 nfs4_free_slot(tbl, slot);
581 if (tbl->highest_used_slotid != NFS4_NO_SLOT)
582 send_new_highest_used_slotid = false;
584 spin_unlock(&tbl->slot_tbl_lock);
586 if (send_new_highest_used_slotid)
587 nfs41_server_notify_highest_slotid_update(session->clp);
590 int nfs41_sequence_done(struct rpc_task *task, struct nfs4_sequence_res *res)
592 struct nfs4_session *session;
593 struct nfs4_slot *slot = res->sr_slot;
594 struct nfs_client *clp;
595 bool interrupted = false;
600 /* don't increment the sequence number if the task wasn't sent */
601 if (!RPC_WAS_SENT(task))
604 session = slot->table->session;
606 if (slot->interrupted) {
607 slot->interrupted = 0;
611 trace_nfs4_sequence_done(session, res);
612 /* Check the SEQUENCE operation status */
613 switch (res->sr_status) {
615 /* Update the slot's sequence and clientid lease timer */
618 do_renew_lease(clp, res->sr_timestamp);
619 /* Check sequence flags */
620 if (res->sr_status_flags != 0)
621 nfs4_schedule_lease_recovery(clp);
622 nfs41_update_target_slotid(slot->table, slot, res);
626 * sr_status remains 1 if an RPC level error occurred.
627 * The server may or may not have processed the sequence
629 * Mark the slot as having hosted an interrupted RPC call.
631 slot->interrupted = 1;
634 /* The server detected a resend of the RPC call and
635 * returned NFS4ERR_DELAY as per Section 2.10.6.2
638 dprintk("%s: slot=%u seq=%u: Operation in progress\n",
643 case -NFS4ERR_BADSLOT:
645 * The slot id we used was probably retired. Try again
646 * using a different slot id.
649 case -NFS4ERR_SEQ_MISORDERED:
651 * Was the last operation on this sequence interrupted?
652 * If so, retry after bumping the sequence number.
659 * Could this slot have been previously retired?
660 * If so, then the server may be expecting seq_nr = 1!
662 if (slot->seq_nr != 1) {
667 case -NFS4ERR_SEQ_FALSE_RETRY:
671 /* Just update the slot sequence no. */
675 /* The session may be reset by one of the error handlers. */
676 dprintk("%s: Error %d free the slot \n", __func__, res->sr_status);
677 nfs41_sequence_free_slot(res);
681 if (rpc_restart_call_prepare(task)) {
687 if (!rpc_restart_call(task))
689 rpc_delay(task, NFS4_POLL_RETRY_MAX);
692 EXPORT_SYMBOL_GPL(nfs41_sequence_done);
694 static int nfs4_sequence_done(struct rpc_task *task,
695 struct nfs4_sequence_res *res)
697 if (res->sr_slot == NULL)
699 if (!res->sr_slot->table->session)
700 return nfs40_sequence_done(task, res);
701 return nfs41_sequence_done(task, res);
704 int nfs41_setup_sequence(struct nfs4_session *session,
705 struct nfs4_sequence_args *args,
706 struct nfs4_sequence_res *res,
707 struct rpc_task *task)
709 struct nfs4_slot *slot;
710 struct nfs4_slot_table *tbl;
712 dprintk("--> %s\n", __func__);
713 /* slot already allocated? */
714 if (res->sr_slot != NULL)
717 tbl = &session->fc_slot_table;
719 task->tk_timeout = 0;
721 spin_lock(&tbl->slot_tbl_lock);
722 if (test_bit(NFS4_SLOT_TBL_DRAINING, &tbl->slot_tbl_state) &&
723 !args->sa_privileged) {
724 /* The state manager will wait until the slot table is empty */
725 dprintk("%s session is draining\n", __func__);
729 slot = nfs4_alloc_slot(tbl);
731 /* If out of memory, try again in 1/4 second */
732 if (slot == ERR_PTR(-ENOMEM))
733 task->tk_timeout = HZ >> 2;
734 dprintk("<-- %s: no free slots\n", __func__);
737 spin_unlock(&tbl->slot_tbl_lock);
739 args->sa_slot = slot;
741 dprintk("<-- %s slotid=%u seqid=%u\n", __func__,
742 slot->slot_nr, slot->seq_nr);
745 res->sr_timestamp = jiffies;
746 res->sr_status_flags = 0;
748 * sr_status is only set in decode_sequence, and so will remain
749 * set to 1 if an rpc level failure occurs.
752 trace_nfs4_setup_sequence(session, args);
754 rpc_call_start(task);
757 /* Privileged tasks are queued with top priority */
758 if (args->sa_privileged)
759 rpc_sleep_on_priority(&tbl->slot_tbl_waitq, task,
760 NULL, RPC_PRIORITY_PRIVILEGED);
762 rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL);
763 spin_unlock(&tbl->slot_tbl_lock);
766 EXPORT_SYMBOL_GPL(nfs41_setup_sequence);
768 static int nfs4_setup_sequence(const struct nfs_server *server,
769 struct nfs4_sequence_args *args,
770 struct nfs4_sequence_res *res,
771 struct rpc_task *task)
773 struct nfs4_session *session = nfs4_get_session(server);
777 return nfs40_setup_sequence(server, args, res, task);
779 dprintk("--> %s clp %p session %p sr_slot %u\n",
780 __func__, session->clp, session, res->sr_slot ?
781 res->sr_slot->slot_nr : NFS4_NO_SLOT);
783 ret = nfs41_setup_sequence(session, args, res, task);
785 dprintk("<-- %s status=%d\n", __func__, ret);
789 static void nfs41_call_sync_prepare(struct rpc_task *task, void *calldata)
791 struct nfs4_call_sync_data *data = calldata;
792 struct nfs4_session *session = nfs4_get_session(data->seq_server);
794 dprintk("--> %s data->seq_server %p\n", __func__, data->seq_server);
796 nfs41_setup_sequence(session, data->seq_args, data->seq_res, task);
799 static void nfs41_call_sync_done(struct rpc_task *task, void *calldata)
801 struct nfs4_call_sync_data *data = calldata;
803 nfs41_sequence_done(task, data->seq_res);
806 static const struct rpc_call_ops nfs41_call_sync_ops = {
807 .rpc_call_prepare = nfs41_call_sync_prepare,
808 .rpc_call_done = nfs41_call_sync_done,
811 #else /* !CONFIG_NFS_V4_1 */
813 static int nfs4_setup_sequence(const struct nfs_server *server,
814 struct nfs4_sequence_args *args,
815 struct nfs4_sequence_res *res,
816 struct rpc_task *task)
818 return nfs40_setup_sequence(server, args, res, task);
821 static int nfs4_sequence_done(struct rpc_task *task,
822 struct nfs4_sequence_res *res)
824 return nfs40_sequence_done(task, res);
827 #endif /* !CONFIG_NFS_V4_1 */
829 static void nfs40_call_sync_prepare(struct rpc_task *task, void *calldata)
831 struct nfs4_call_sync_data *data = calldata;
832 nfs4_setup_sequence(data->seq_server,
833 data->seq_args, data->seq_res, task);
836 static void nfs40_call_sync_done(struct rpc_task *task, void *calldata)
838 struct nfs4_call_sync_data *data = calldata;
839 nfs4_sequence_done(task, data->seq_res);
842 static const struct rpc_call_ops nfs40_call_sync_ops = {
843 .rpc_call_prepare = nfs40_call_sync_prepare,
844 .rpc_call_done = nfs40_call_sync_done,
847 static int nfs4_call_sync_sequence(struct rpc_clnt *clnt,
848 struct nfs_server *server,
849 struct rpc_message *msg,
850 struct nfs4_sequence_args *args,
851 struct nfs4_sequence_res *res)
854 struct rpc_task *task;
855 struct nfs_client *clp = server->nfs_client;
856 struct nfs4_call_sync_data data = {
857 .seq_server = server,
861 struct rpc_task_setup task_setup = {
864 .callback_ops = clp->cl_mvops->call_sync_ops,
865 .callback_data = &data
868 task = rpc_run_task(&task_setup);
872 ret = task->tk_status;
879 int nfs4_call_sync(struct rpc_clnt *clnt,
880 struct nfs_server *server,
881 struct rpc_message *msg,
882 struct nfs4_sequence_args *args,
883 struct nfs4_sequence_res *res,
886 nfs4_init_sequence(args, res, cache_reply);
887 return nfs4_call_sync_sequence(clnt, server, msg, args, res);
890 static void update_changeattr(struct inode *dir, struct nfs4_change_info *cinfo)
892 struct nfs_inode *nfsi = NFS_I(dir);
894 spin_lock(&dir->i_lock);
895 nfsi->cache_validity |= NFS_INO_INVALID_ATTR|NFS_INO_INVALID_DATA;
896 if (!cinfo->atomic || cinfo->before != dir->i_version)
897 nfs_force_lookup_revalidate(dir);
898 dir->i_version = cinfo->after;
899 nfs_fscache_invalidate(dir);
900 spin_unlock(&dir->i_lock);
903 struct nfs4_opendata {
905 struct nfs_openargs o_arg;
906 struct nfs_openres o_res;
907 struct nfs_open_confirmargs c_arg;
908 struct nfs_open_confirmres c_res;
909 struct nfs4_string owner_name;
910 struct nfs4_string group_name;
911 struct nfs_fattr f_attr;
912 struct nfs4_label *f_label;
914 struct dentry *dentry;
915 struct nfs4_state_owner *owner;
916 struct nfs4_state *state;
918 unsigned long timestamp;
919 unsigned int rpc_done : 1;
920 unsigned int file_created : 1;
921 unsigned int is_recover : 1;
926 static bool nfs4_clear_cap_atomic_open_v1(struct nfs_server *server,
927 int err, struct nfs4_exception *exception)
931 if (!(server->caps & NFS_CAP_ATOMIC_OPEN_V1))
933 server->caps &= ~NFS_CAP_ATOMIC_OPEN_V1;
934 exception->retry = 1;
938 static enum open_claim_type4
939 nfs4_map_atomic_open_claim(struct nfs_server *server,
940 enum open_claim_type4 claim)
942 if (server->caps & NFS_CAP_ATOMIC_OPEN_V1)
947 case NFS4_OPEN_CLAIM_FH:
948 return NFS4_OPEN_CLAIM_NULL;
949 case NFS4_OPEN_CLAIM_DELEG_CUR_FH:
950 return NFS4_OPEN_CLAIM_DELEGATE_CUR;
951 case NFS4_OPEN_CLAIM_DELEG_PREV_FH:
952 return NFS4_OPEN_CLAIM_DELEGATE_PREV;
956 static void nfs4_init_opendata_res(struct nfs4_opendata *p)
958 p->o_res.f_attr = &p->f_attr;
959 p->o_res.f_label = p->f_label;
960 p->o_res.seqid = p->o_arg.seqid;
961 p->c_res.seqid = p->c_arg.seqid;
962 p->o_res.server = p->o_arg.server;
963 p->o_res.access_request = p->o_arg.access;
964 nfs_fattr_init(&p->f_attr);
965 nfs_fattr_init_names(&p->f_attr, &p->owner_name, &p->group_name);
968 static struct nfs4_opendata *nfs4_opendata_alloc(struct dentry *dentry,
969 struct nfs4_state_owner *sp, fmode_t fmode, int flags,
970 const struct iattr *attrs,
971 struct nfs4_label *label,
972 enum open_claim_type4 claim,
975 struct dentry *parent = dget_parent(dentry);
976 struct inode *dir = parent->d_inode;
977 struct nfs_server *server = NFS_SERVER(dir);
978 struct nfs4_opendata *p;
980 p = kzalloc(sizeof(*p), gfp_mask);
984 p->f_label = nfs4_label_alloc(server, gfp_mask);
985 if (IS_ERR(p->f_label))
988 p->o_arg.seqid = nfs_alloc_seqid(&sp->so_seqid, gfp_mask);
989 if (p->o_arg.seqid == NULL)
991 nfs_sb_active(dentry->d_sb);
992 p->dentry = dget(dentry);
995 atomic_inc(&sp->so_count);
996 p->o_arg.open_flags = flags;
997 p->o_arg.fmode = fmode & (FMODE_READ|FMODE_WRITE);
998 /* don't put an ACCESS op in OPEN compound if O_EXCL, because ACCESS
999 * will return permission denied for all bits until close */
1000 if (!(flags & O_EXCL)) {
1001 /* ask server to check for all possible rights as results
1003 p->o_arg.access = NFS4_ACCESS_READ | NFS4_ACCESS_MODIFY |
1004 NFS4_ACCESS_EXTEND | NFS4_ACCESS_EXECUTE;
1006 p->o_arg.clientid = server->nfs_client->cl_clientid;
1007 p->o_arg.id.create_time = ktime_to_ns(sp->so_seqid.create_time);
1008 p->o_arg.id.uniquifier = sp->so_seqid.owner_id;
1009 p->o_arg.name = &dentry->d_name;
1010 p->o_arg.server = server;
1011 p->o_arg.bitmask = nfs4_bitmask(server, label);
1012 p->o_arg.open_bitmap = &nfs4_fattr_bitmap[0];
1013 p->o_arg.label = label;
1014 p->o_arg.claim = nfs4_map_atomic_open_claim(server, claim);
1015 switch (p->o_arg.claim) {
1016 case NFS4_OPEN_CLAIM_NULL:
1017 case NFS4_OPEN_CLAIM_DELEGATE_CUR:
1018 case NFS4_OPEN_CLAIM_DELEGATE_PREV:
1019 p->o_arg.fh = NFS_FH(dir);
1021 case NFS4_OPEN_CLAIM_PREVIOUS:
1022 case NFS4_OPEN_CLAIM_FH:
1023 case NFS4_OPEN_CLAIM_DELEG_CUR_FH:
1024 case NFS4_OPEN_CLAIM_DELEG_PREV_FH:
1025 p->o_arg.fh = NFS_FH(dentry->d_inode);
1027 if (attrs != NULL && attrs->ia_valid != 0) {
1030 p->o_arg.u.attrs = &p->attrs;
1031 memcpy(&p->attrs, attrs, sizeof(p->attrs));
1034 verf[1] = current->pid;
1035 memcpy(p->o_arg.u.verifier.data, verf,
1036 sizeof(p->o_arg.u.verifier.data));
1038 p->c_arg.fh = &p->o_res.fh;
1039 p->c_arg.stateid = &p->o_res.stateid;
1040 p->c_arg.seqid = p->o_arg.seqid;
1041 nfs4_init_opendata_res(p);
1042 kref_init(&p->kref);
1046 nfs4_label_free(p->f_label);
1054 static void nfs4_opendata_free(struct kref *kref)
1056 struct nfs4_opendata *p = container_of(kref,
1057 struct nfs4_opendata, kref);
1058 struct super_block *sb = p->dentry->d_sb;
1060 nfs_free_seqid(p->o_arg.seqid);
1061 if (p->state != NULL)
1062 nfs4_put_open_state(p->state);
1063 nfs4_put_state_owner(p->owner);
1065 nfs4_label_free(p->f_label);
1069 nfs_sb_deactive(sb);
1070 nfs_fattr_free_names(&p->f_attr);
1071 kfree(p->f_attr.mdsthreshold);
1075 static void nfs4_opendata_put(struct nfs4_opendata *p)
1078 kref_put(&p->kref, nfs4_opendata_free);
1081 static int nfs4_wait_for_completion_rpc_task(struct rpc_task *task)
1085 ret = rpc_wait_for_completion_task(task);
1089 static int can_open_cached(struct nfs4_state *state, fmode_t mode, int open_mode)
1093 if (open_mode & (O_EXCL|O_TRUNC))
1095 switch (mode & (FMODE_READ|FMODE_WRITE)) {
1097 ret |= test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0
1098 && state->n_rdonly != 0;
1101 ret |= test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0
1102 && state->n_wronly != 0;
1104 case FMODE_READ|FMODE_WRITE:
1105 ret |= test_bit(NFS_O_RDWR_STATE, &state->flags) != 0
1106 && state->n_rdwr != 0;
1112 static int can_open_delegated(struct nfs_delegation *delegation, fmode_t fmode)
1114 if (delegation == NULL)
1116 if ((delegation->type & fmode) != fmode)
1118 if (test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags))
1120 if (test_bit(NFS_DELEGATION_RETURNING, &delegation->flags))
1122 nfs_mark_delegation_referenced(delegation);
1126 static void update_open_stateflags(struct nfs4_state *state, fmode_t fmode)
1135 case FMODE_READ|FMODE_WRITE:
1138 nfs4_state_set_mode_locked(state, state->state | fmode);
1141 static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode)
1143 if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0)
1144 nfs4_stateid_copy(&state->stateid, stateid);
1145 nfs4_stateid_copy(&state->open_stateid, stateid);
1146 set_bit(NFS_OPEN_STATE, &state->flags);
1149 set_bit(NFS_O_RDONLY_STATE, &state->flags);
1152 set_bit(NFS_O_WRONLY_STATE, &state->flags);
1154 case FMODE_READ|FMODE_WRITE:
1155 set_bit(NFS_O_RDWR_STATE, &state->flags);
1159 static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode)
1161 write_seqlock(&state->seqlock);
1162 nfs_set_open_stateid_locked(state, stateid, fmode);
1163 write_sequnlock(&state->seqlock);
1166 static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, fmode_t fmode)
1169 * Protect the call to nfs4_state_set_mode_locked and
1170 * serialise the stateid update
1172 write_seqlock(&state->seqlock);
1173 if (deleg_stateid != NULL) {
1174 nfs4_stateid_copy(&state->stateid, deleg_stateid);
1175 set_bit(NFS_DELEGATED_STATE, &state->flags);
1177 if (open_stateid != NULL)
1178 nfs_set_open_stateid_locked(state, open_stateid, fmode);
1179 write_sequnlock(&state->seqlock);
1180 spin_lock(&state->owner->so_lock);
1181 update_open_stateflags(state, fmode);
1182 spin_unlock(&state->owner->so_lock);
1185 static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, fmode_t fmode)
1187 struct nfs_inode *nfsi = NFS_I(state->inode);
1188 struct nfs_delegation *deleg_cur;
1191 fmode &= (FMODE_READ|FMODE_WRITE);
1194 deleg_cur = rcu_dereference(nfsi->delegation);
1195 if (deleg_cur == NULL)
1198 spin_lock(&deleg_cur->lock);
1199 if (rcu_dereference(nfsi->delegation) != deleg_cur ||
1200 test_bit(NFS_DELEGATION_RETURNING, &deleg_cur->flags) ||
1201 (deleg_cur->type & fmode) != fmode)
1202 goto no_delegation_unlock;
1204 if (delegation == NULL)
1205 delegation = &deleg_cur->stateid;
1206 else if (!nfs4_stateid_match(&deleg_cur->stateid, delegation))
1207 goto no_delegation_unlock;
1209 nfs_mark_delegation_referenced(deleg_cur);
1210 __update_open_stateid(state, open_stateid, &deleg_cur->stateid, fmode);
1212 no_delegation_unlock:
1213 spin_unlock(&deleg_cur->lock);
1217 if (!ret && open_stateid != NULL) {
1218 __update_open_stateid(state, open_stateid, NULL, fmode);
1226 static void nfs4_return_incompatible_delegation(struct inode *inode, fmode_t fmode)
1228 struct nfs_delegation *delegation;
1231 delegation = rcu_dereference(NFS_I(inode)->delegation);
1232 if (delegation == NULL || (delegation->type & fmode) == fmode) {
1237 nfs4_inode_return_delegation(inode);
1240 static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
1242 struct nfs4_state *state = opendata->state;
1243 struct nfs_inode *nfsi = NFS_I(state->inode);
1244 struct nfs_delegation *delegation;
1245 int open_mode = opendata->o_arg.open_flags;
1246 fmode_t fmode = opendata->o_arg.fmode;
1247 nfs4_stateid stateid;
1251 if (can_open_cached(state, fmode, open_mode)) {
1252 spin_lock(&state->owner->so_lock);
1253 if (can_open_cached(state, fmode, open_mode)) {
1254 update_open_stateflags(state, fmode);
1255 spin_unlock(&state->owner->so_lock);
1256 goto out_return_state;
1258 spin_unlock(&state->owner->so_lock);
1261 delegation = rcu_dereference(nfsi->delegation);
1262 if (!can_open_delegated(delegation, fmode)) {
1266 /* Save the delegation */
1267 nfs4_stateid_copy(&stateid, &delegation->stateid);
1269 nfs_release_seqid(opendata->o_arg.seqid);
1270 if (!opendata->is_recover) {
1271 ret = nfs_may_open(state->inode, state->owner->so_cred, open_mode);
1277 /* Try to update the stateid using the delegation */
1278 if (update_open_stateid(state, NULL, &stateid, fmode))
1279 goto out_return_state;
1282 return ERR_PTR(ret);
1284 atomic_inc(&state->count);
1289 nfs4_opendata_check_deleg(struct nfs4_opendata *data, struct nfs4_state *state)
1291 struct nfs_client *clp = NFS_SERVER(state->inode)->nfs_client;
1292 struct nfs_delegation *delegation;
1293 int delegation_flags = 0;
1296 delegation = rcu_dereference(NFS_I(state->inode)->delegation);
1298 delegation_flags = delegation->flags;
1300 if (data->o_arg.claim == NFS4_OPEN_CLAIM_DELEGATE_CUR) {
1301 pr_err_ratelimited("NFS: Broken NFSv4 server %s is "
1302 "returning a delegation for "
1303 "OPEN(CLAIM_DELEGATE_CUR)\n",
1305 } else if ((delegation_flags & 1UL<<NFS_DELEGATION_NEED_RECLAIM) == 0)
1306 nfs_inode_set_delegation(state->inode,
1307 data->owner->so_cred,
1310 nfs_inode_reclaim_delegation(state->inode,
1311 data->owner->so_cred,
1316 * Check the inode attributes against the CLAIM_PREVIOUS returned attributes
1317 * and update the nfs4_state.
1319 static struct nfs4_state *
1320 _nfs4_opendata_reclaim_to_nfs4_state(struct nfs4_opendata *data)
1322 struct inode *inode = data->state->inode;
1323 struct nfs4_state *state = data->state;
1326 if (!data->rpc_done) {
1327 if (data->rpc_status) {
1328 ret = data->rpc_status;
1331 /* cached opens have already been processed */
1335 ret = nfs_refresh_inode(inode, &data->f_attr);
1339 if (data->o_res.delegation_type != 0)
1340 nfs4_opendata_check_deleg(data, state);
1342 update_open_stateid(state, &data->o_res.stateid, NULL,
1344 atomic_inc(&state->count);
1348 return ERR_PTR(ret);
1352 static struct nfs4_state *
1353 _nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data)
1355 struct inode *inode;
1356 struct nfs4_state *state = NULL;
1359 if (!data->rpc_done) {
1360 state = nfs4_try_open_cached(data);
1365 if (!(data->f_attr.valid & NFS_ATTR_FATTR))
1367 inode = nfs_fhget(data->dir->d_sb, &data->o_res.fh, &data->f_attr, data->f_label);
1368 ret = PTR_ERR(inode);
1372 state = nfs4_get_open_state(inode, data->owner);
1375 if (data->o_res.delegation_type != 0)
1376 nfs4_opendata_check_deleg(data, state);
1377 update_open_stateid(state, &data->o_res.stateid, NULL,
1381 nfs_release_seqid(data->o_arg.seqid);
1386 return ERR_PTR(ret);
1389 static struct nfs4_state *
1390 nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data)
1392 if (data->o_arg.claim == NFS4_OPEN_CLAIM_PREVIOUS)
1393 return _nfs4_opendata_reclaim_to_nfs4_state(data);
1394 return _nfs4_opendata_to_nfs4_state(data);
1397 static struct nfs_open_context *nfs4_state_find_open_context(struct nfs4_state *state)
1399 struct nfs_inode *nfsi = NFS_I(state->inode);
1400 struct nfs_open_context *ctx;
1402 spin_lock(&state->inode->i_lock);
1403 list_for_each_entry(ctx, &nfsi->open_files, list) {
1404 if (ctx->state != state)
1406 get_nfs_open_context(ctx);
1407 spin_unlock(&state->inode->i_lock);
1410 spin_unlock(&state->inode->i_lock);
1411 return ERR_PTR(-ENOENT);
1414 static struct nfs4_opendata *nfs4_open_recoverdata_alloc(struct nfs_open_context *ctx,
1415 struct nfs4_state *state, enum open_claim_type4 claim)
1417 struct nfs4_opendata *opendata;
1419 opendata = nfs4_opendata_alloc(ctx->dentry, state->owner, 0, 0,
1420 NULL, NULL, claim, GFP_NOFS);
1421 if (opendata == NULL)
1422 return ERR_PTR(-ENOMEM);
1423 opendata->state = state;
1424 atomic_inc(&state->count);
1428 static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, fmode_t fmode, struct nfs4_state **res)
1430 struct nfs4_state *newstate;
1433 opendata->o_arg.open_flags = 0;
1434 opendata->o_arg.fmode = fmode;
1435 memset(&opendata->o_res, 0, sizeof(opendata->o_res));
1436 memset(&opendata->c_res, 0, sizeof(opendata->c_res));
1437 nfs4_init_opendata_res(opendata);
1438 ret = _nfs4_recover_proc_open(opendata);
1441 newstate = nfs4_opendata_to_nfs4_state(opendata);
1442 if (IS_ERR(newstate))
1443 return PTR_ERR(newstate);
1444 nfs4_close_state(newstate, fmode);
1449 static int nfs4_open_recover(struct nfs4_opendata *opendata, struct nfs4_state *state)
1451 struct nfs4_state *newstate;
1454 /* memory barrier prior to reading state->n_* */
1455 clear_bit(NFS_DELEGATED_STATE, &state->flags);
1456 clear_bit(NFS_OPEN_STATE, &state->flags);
1458 if (state->n_rdwr != 0) {
1459 clear_bit(NFS_O_RDWR_STATE, &state->flags);
1460 ret = nfs4_open_recover_helper(opendata, FMODE_READ|FMODE_WRITE, &newstate);
1463 if (newstate != state)
1466 if (state->n_wronly != 0) {
1467 clear_bit(NFS_O_WRONLY_STATE, &state->flags);
1468 ret = nfs4_open_recover_helper(opendata, FMODE_WRITE, &newstate);
1471 if (newstate != state)
1474 if (state->n_rdonly != 0) {
1475 clear_bit(NFS_O_RDONLY_STATE, &state->flags);
1476 ret = nfs4_open_recover_helper(opendata, FMODE_READ, &newstate);
1479 if (newstate != state)
1483 * We may have performed cached opens for all three recoveries.
1484 * Check if we need to update the current stateid.
1486 if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0 &&
1487 !nfs4_stateid_match(&state->stateid, &state->open_stateid)) {
1488 write_seqlock(&state->seqlock);
1489 if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0)
1490 nfs4_stateid_copy(&state->stateid, &state->open_stateid);
1491 write_sequnlock(&state->seqlock);
1498 * reclaim state on the server after a reboot.
1500 static int _nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state)
1502 struct nfs_delegation *delegation;
1503 struct nfs4_opendata *opendata;
1504 fmode_t delegation_type = 0;
1507 opendata = nfs4_open_recoverdata_alloc(ctx, state,
1508 NFS4_OPEN_CLAIM_PREVIOUS);
1509 if (IS_ERR(opendata))
1510 return PTR_ERR(opendata);
1512 delegation = rcu_dereference(NFS_I(state->inode)->delegation);
1513 if (delegation != NULL && test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags) != 0)
1514 delegation_type = delegation->type;
1516 opendata->o_arg.u.delegation_type = delegation_type;
1517 status = nfs4_open_recover(opendata, state);
1518 nfs4_opendata_put(opendata);
1522 static int nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state)
1524 struct nfs_server *server = NFS_SERVER(state->inode);
1525 struct nfs4_exception exception = { };
1528 err = _nfs4_do_open_reclaim(ctx, state);
1529 trace_nfs4_open_reclaim(ctx, 0, err);
1530 if (nfs4_clear_cap_atomic_open_v1(server, err, &exception))
1532 if (err != -NFS4ERR_DELAY)
1534 nfs4_handle_exception(server, err, &exception);
1535 } while (exception.retry);
1539 static int nfs4_open_reclaim(struct nfs4_state_owner *sp, struct nfs4_state *state)
1541 struct nfs_open_context *ctx;
1544 ctx = nfs4_state_find_open_context(state);
1547 ret = nfs4_do_open_reclaim(ctx, state);
1548 put_nfs_open_context(ctx);
1552 static int nfs4_handle_delegation_recall_error(struct nfs_server *server, struct nfs4_state *state, const nfs4_stateid *stateid, int err)
1556 printk(KERN_ERR "NFS: %s: unhandled error "
1557 "%d.\n", __func__, err);
1562 case -NFS4ERR_BADSESSION:
1563 case -NFS4ERR_BADSLOT:
1564 case -NFS4ERR_BAD_HIGH_SLOT:
1565 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION:
1566 case -NFS4ERR_DEADSESSION:
1567 set_bit(NFS_DELEGATED_STATE, &state->flags);
1568 nfs4_schedule_session_recovery(server->nfs_client->cl_session, err);
1570 case -NFS4ERR_STALE_CLIENTID:
1571 case -NFS4ERR_STALE_STATEID:
1572 set_bit(NFS_DELEGATED_STATE, &state->flags);
1573 case -NFS4ERR_EXPIRED:
1574 /* Don't recall a delegation if it was lost */
1575 nfs4_schedule_lease_recovery(server->nfs_client);
1577 case -NFS4ERR_MOVED:
1578 nfs4_schedule_migration_recovery(server);
1580 case -NFS4ERR_LEASE_MOVED:
1581 nfs4_schedule_lease_moved_recovery(server->nfs_client);
1583 case -NFS4ERR_DELEG_REVOKED:
1584 case -NFS4ERR_ADMIN_REVOKED:
1585 case -NFS4ERR_BAD_STATEID:
1586 case -NFS4ERR_OPENMODE:
1587 nfs_inode_find_state_and_recover(state->inode,
1589 nfs4_schedule_stateid_recovery(server, state);
1591 case -NFS4ERR_DELAY:
1592 case -NFS4ERR_GRACE:
1593 set_bit(NFS_DELEGATED_STATE, &state->flags);
1597 case -NFS4ERR_DENIED:
1598 /* kill_proc(fl->fl_pid, SIGLOST, 1); */
1604 int nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state *state, const nfs4_stateid *stateid)
1606 struct nfs_server *server = NFS_SERVER(state->inode);
1607 struct nfs4_opendata *opendata;
1610 opendata = nfs4_open_recoverdata_alloc(ctx, state,
1611 NFS4_OPEN_CLAIM_DELEG_CUR_FH);
1612 if (IS_ERR(opendata))
1613 return PTR_ERR(opendata);
1614 nfs4_stateid_copy(&opendata->o_arg.u.delegation, stateid);
1615 err = nfs4_open_recover(opendata, state);
1616 nfs4_opendata_put(opendata);
1617 return nfs4_handle_delegation_recall_error(server, state, stateid, err);
1620 static void nfs4_open_confirm_prepare(struct rpc_task *task, void *calldata)
1622 struct nfs4_opendata *data = calldata;
1624 nfs40_setup_sequence(data->o_arg.server, &data->c_arg.seq_args,
1625 &data->c_res.seq_res, task);
1628 static void nfs4_open_confirm_done(struct rpc_task *task, void *calldata)
1630 struct nfs4_opendata *data = calldata;
1632 nfs40_sequence_done(task, &data->c_res.seq_res);
1634 data->rpc_status = task->tk_status;
1635 if (data->rpc_status == 0) {
1636 nfs4_stateid_copy(&data->o_res.stateid, &data->c_res.stateid);
1637 nfs_confirm_seqid(&data->owner->so_seqid, 0);
1638 renew_lease(data->o_res.server, data->timestamp);
1643 static void nfs4_open_confirm_release(void *calldata)
1645 struct nfs4_opendata *data = calldata;
1646 struct nfs4_state *state = NULL;
1648 /* If this request hasn't been cancelled, do nothing */
1649 if (data->cancelled == 0)
1651 /* In case of error, no cleanup! */
1652 if (!data->rpc_done)
1654 state = nfs4_opendata_to_nfs4_state(data);
1656 nfs4_close_state(state, data->o_arg.fmode);
1658 nfs4_opendata_put(data);
1661 static const struct rpc_call_ops nfs4_open_confirm_ops = {
1662 .rpc_call_prepare = nfs4_open_confirm_prepare,
1663 .rpc_call_done = nfs4_open_confirm_done,
1664 .rpc_release = nfs4_open_confirm_release,
1668 * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata
1670 static int _nfs4_proc_open_confirm(struct nfs4_opendata *data)
1672 struct nfs_server *server = NFS_SERVER(data->dir->d_inode);
1673 struct rpc_task *task;
1674 struct rpc_message msg = {
1675 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_CONFIRM],
1676 .rpc_argp = &data->c_arg,
1677 .rpc_resp = &data->c_res,
1678 .rpc_cred = data->owner->so_cred,
1680 struct rpc_task_setup task_setup_data = {
1681 .rpc_client = server->client,
1682 .rpc_message = &msg,
1683 .callback_ops = &nfs4_open_confirm_ops,
1684 .callback_data = data,
1685 .workqueue = nfsiod_workqueue,
1686 .flags = RPC_TASK_ASYNC,
1690 nfs4_init_sequence(&data->c_arg.seq_args, &data->c_res.seq_res, 1);
1691 kref_get(&data->kref);
1693 data->rpc_status = 0;
1694 data->timestamp = jiffies;
1695 task = rpc_run_task(&task_setup_data);
1697 return PTR_ERR(task);
1698 status = nfs4_wait_for_completion_rpc_task(task);
1700 data->cancelled = 1;
1703 status = data->rpc_status;
1708 static void nfs4_open_prepare(struct rpc_task *task, void *calldata)
1710 struct nfs4_opendata *data = calldata;
1711 struct nfs4_state_owner *sp = data->owner;
1712 struct nfs_client *clp = sp->so_server->nfs_client;
1714 if (nfs_wait_on_sequence(data->o_arg.seqid, task) != 0)
1717 * Check if we still need to send an OPEN call, or if we can use
1718 * a delegation instead.
1720 if (data->state != NULL) {
1721 struct nfs_delegation *delegation;
1723 if (can_open_cached(data->state, data->o_arg.fmode, data->o_arg.open_flags))
1726 delegation = rcu_dereference(NFS_I(data->state->inode)->delegation);
1727 if (data->o_arg.claim != NFS4_OPEN_CLAIM_DELEGATE_CUR &&
1728 data->o_arg.claim != NFS4_OPEN_CLAIM_DELEG_CUR_FH &&
1729 can_open_delegated(delegation, data->o_arg.fmode))
1730 goto unlock_no_action;
1733 /* Update client id. */
1734 data->o_arg.clientid = clp->cl_clientid;
1735 switch (data->o_arg.claim) {
1736 case NFS4_OPEN_CLAIM_PREVIOUS:
1737 case NFS4_OPEN_CLAIM_DELEG_CUR_FH:
1738 case NFS4_OPEN_CLAIM_DELEG_PREV_FH:
1739 data->o_arg.open_bitmap = &nfs4_open_noattr_bitmap[0];
1740 case NFS4_OPEN_CLAIM_FH:
1741 task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_NOATTR];
1742 nfs_copy_fh(&data->o_res.fh, data->o_arg.fh);
1744 data->timestamp = jiffies;
1745 if (nfs4_setup_sequence(data->o_arg.server,
1746 &data->o_arg.seq_args,
1747 &data->o_res.seq_res,
1749 nfs_release_seqid(data->o_arg.seqid);
1751 /* Set the create mode (note dependency on the session type) */
1752 data->o_arg.createmode = NFS4_CREATE_UNCHECKED;
1753 if (data->o_arg.open_flags & O_EXCL) {
1754 data->o_arg.createmode = NFS4_CREATE_EXCLUSIVE;
1755 if (nfs4_has_persistent_session(clp))
1756 data->o_arg.createmode = NFS4_CREATE_GUARDED;
1757 else if (clp->cl_mvops->minor_version > 0)
1758 data->o_arg.createmode = NFS4_CREATE_EXCLUSIVE4_1;
1764 task->tk_action = NULL;
1766 nfs4_sequence_done(task, &data->o_res.seq_res);
1769 static void nfs4_open_done(struct rpc_task *task, void *calldata)
1771 struct nfs4_opendata *data = calldata;
1773 data->rpc_status = task->tk_status;
1775 if (!nfs4_sequence_done(task, &data->o_res.seq_res))
1778 if (task->tk_status == 0) {
1779 if (data->o_res.f_attr->valid & NFS_ATTR_FATTR_TYPE) {
1780 switch (data->o_res.f_attr->mode & S_IFMT) {
1784 data->rpc_status = -ELOOP;
1787 data->rpc_status = -EISDIR;
1790 data->rpc_status = -ENOTDIR;
1793 renew_lease(data->o_res.server, data->timestamp);
1794 if (!(data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM))
1795 nfs_confirm_seqid(&data->owner->so_seqid, 0);
1800 static void nfs4_open_release(void *calldata)
1802 struct nfs4_opendata *data = calldata;
1803 struct nfs4_state *state = NULL;
1805 /* If this request hasn't been cancelled, do nothing */
1806 if (data->cancelled == 0)
1808 /* In case of error, no cleanup! */
1809 if (data->rpc_status != 0 || !data->rpc_done)
1811 /* In case we need an open_confirm, no cleanup! */
1812 if (data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM)
1814 state = nfs4_opendata_to_nfs4_state(data);
1816 nfs4_close_state(state, data->o_arg.fmode);
1818 nfs4_opendata_put(data);
1821 static const struct rpc_call_ops nfs4_open_ops = {
1822 .rpc_call_prepare = nfs4_open_prepare,
1823 .rpc_call_done = nfs4_open_done,
1824 .rpc_release = nfs4_open_release,
1827 static int nfs4_run_open_task(struct nfs4_opendata *data, int isrecover)
1829 struct inode *dir = data->dir->d_inode;
1830 struct nfs_server *server = NFS_SERVER(dir);
1831 struct nfs_openargs *o_arg = &data->o_arg;
1832 struct nfs_openres *o_res = &data->o_res;
1833 struct rpc_task *task;
1834 struct rpc_message msg = {
1835 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN],
1838 .rpc_cred = data->owner->so_cred,
1840 struct rpc_task_setup task_setup_data = {
1841 .rpc_client = server->client,
1842 .rpc_message = &msg,
1843 .callback_ops = &nfs4_open_ops,
1844 .callback_data = data,
1845 .workqueue = nfsiod_workqueue,
1846 .flags = RPC_TASK_ASYNC,
1850 nfs4_init_sequence(&o_arg->seq_args, &o_res->seq_res, 1);
1851 kref_get(&data->kref);
1853 data->rpc_status = 0;
1854 data->cancelled = 0;
1855 data->is_recover = 0;
1857 nfs4_set_sequence_privileged(&o_arg->seq_args);
1858 data->is_recover = 1;
1860 task = rpc_run_task(&task_setup_data);
1862 return PTR_ERR(task);
1863 status = nfs4_wait_for_completion_rpc_task(task);
1865 data->cancelled = 1;
1868 status = data->rpc_status;
1874 static int _nfs4_recover_proc_open(struct nfs4_opendata *data)
1876 struct inode *dir = data->dir->d_inode;
1877 struct nfs_openres *o_res = &data->o_res;
1880 status = nfs4_run_open_task(data, 1);
1881 if (status != 0 || !data->rpc_done)
1884 nfs_fattr_map_and_free_names(NFS_SERVER(dir), &data->f_attr);
1886 if (o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) {
1887 status = _nfs4_proc_open_confirm(data);
1895 static int nfs4_opendata_access(struct rpc_cred *cred,
1896 struct nfs4_opendata *opendata,
1897 struct nfs4_state *state, fmode_t fmode,
1900 struct nfs_access_entry cache;
1903 /* access call failed or for some reason the server doesn't
1904 * support any access modes -- defer access call until later */
1905 if (opendata->o_res.access_supported == 0)
1909 /* don't check MAY_WRITE - a newly created file may not have
1910 * write mode bits, but POSIX allows the creating process to write.
1911 * use openflags to check for exec, because fmode won't
1912 * always have FMODE_EXEC set when file open for exec. */
1913 if (openflags & __FMODE_EXEC) {
1914 /* ONLY check for exec rights */
1916 } else if (fmode & FMODE_READ)
1920 cache.jiffies = jiffies;
1921 nfs_access_set_mask(&cache, opendata->o_res.access_result);
1922 nfs_access_add_cache(state->inode, &cache);
1924 if ((mask & ~cache.mask & (MAY_READ | MAY_EXEC)) == 0)
1927 /* even though OPEN succeeded, access is denied. Close the file */
1928 nfs4_close_state(state, fmode);
1933 * Note: On error, nfs4_proc_open will free the struct nfs4_opendata
1935 static int _nfs4_proc_open(struct nfs4_opendata *data)
1937 struct inode *dir = data->dir->d_inode;
1938 struct nfs_server *server = NFS_SERVER(dir);
1939 struct nfs_openargs *o_arg = &data->o_arg;
1940 struct nfs_openres *o_res = &data->o_res;
1943 status = nfs4_run_open_task(data, 0);
1944 if (!data->rpc_done)
1947 if (status == -NFS4ERR_BADNAME &&
1948 !(o_arg->open_flags & O_CREAT))
1953 nfs_fattr_map_and_free_names(server, &data->f_attr);
1955 if (o_arg->open_flags & O_CREAT) {
1956 update_changeattr(dir, &o_res->cinfo);
1957 if (o_arg->open_flags & O_EXCL)
1958 data->file_created = 1;
1959 else if (o_res->cinfo.before != o_res->cinfo.after)
1960 data->file_created = 1;
1962 if ((o_res->rflags & NFS4_OPEN_RESULT_LOCKTYPE_POSIX) == 0)
1963 server->caps &= ~NFS_CAP_POSIX_LOCK;
1964 if(o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) {
1965 status = _nfs4_proc_open_confirm(data);
1969 if (!(o_res->f_attr->valid & NFS_ATTR_FATTR))
1970 _nfs4_proc_getattr(server, &o_res->fh, o_res->f_attr, o_res->f_label);
1974 static int nfs4_recover_expired_lease(struct nfs_server *server)
1976 return nfs4_client_recover_expired_lease(server->nfs_client);
1981 * reclaim state on the server after a network partition.
1982 * Assumes caller holds the appropriate lock
1984 static int _nfs4_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state)
1986 struct nfs4_opendata *opendata;
1989 opendata = nfs4_open_recoverdata_alloc(ctx, state,
1990 NFS4_OPEN_CLAIM_FH);
1991 if (IS_ERR(opendata))
1992 return PTR_ERR(opendata);
1993 ret = nfs4_open_recover(opendata, state);
1995 d_drop(ctx->dentry);
1996 nfs4_opendata_put(opendata);
2000 static int nfs4_do_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state)
2002 struct nfs_server *server = NFS_SERVER(state->inode);
2003 struct nfs4_exception exception = { };
2007 err = _nfs4_open_expired(ctx, state);
2008 trace_nfs4_open_expired(ctx, 0, err);
2009 if (nfs4_clear_cap_atomic_open_v1(server, err, &exception))
2014 case -NFS4ERR_GRACE:
2015 case -NFS4ERR_DELAY:
2016 nfs4_handle_exception(server, err, &exception);
2019 } while (exception.retry);
2024 static int nfs4_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state)
2026 struct nfs_open_context *ctx;
2029 ctx = nfs4_state_find_open_context(state);
2032 ret = nfs4_do_open_expired(ctx, state);
2033 put_nfs_open_context(ctx);
2037 static void nfs_finish_clear_delegation_stateid(struct nfs4_state *state)
2039 nfs_remove_bad_delegation(state->inode);
2040 write_seqlock(&state->seqlock);
2041 nfs4_stateid_copy(&state->stateid, &state->open_stateid);
2042 write_sequnlock(&state->seqlock);
2043 clear_bit(NFS_DELEGATED_STATE, &state->flags);
2046 static void nfs40_clear_delegation_stateid(struct nfs4_state *state)
2048 if (rcu_access_pointer(NFS_I(state->inode)->delegation) != NULL)
2049 nfs_finish_clear_delegation_stateid(state);
2052 static int nfs40_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state)
2054 /* NFSv4.0 doesn't allow for delegation recovery on open expire */
2055 nfs40_clear_delegation_stateid(state);
2056 return nfs4_open_expired(sp, state);
2059 #if defined(CONFIG_NFS_V4_1)
2060 static void nfs41_check_delegation_stateid(struct nfs4_state *state)
2062 struct nfs_server *server = NFS_SERVER(state->inode);
2063 nfs4_stateid stateid;
2064 struct nfs_delegation *delegation;
2065 struct rpc_cred *cred;
2068 /* Get the delegation credential for use by test/free_stateid */
2070 delegation = rcu_dereference(NFS_I(state->inode)->delegation);
2071 if (delegation == NULL) {
2076 nfs4_stateid_copy(&stateid, &delegation->stateid);
2077 cred = get_rpccred(delegation->cred);
2079 status = nfs41_test_stateid(server, &stateid, cred);
2080 trace_nfs4_test_delegation_stateid(state, NULL, status);
2082 if (status != NFS_OK) {
2083 /* Free the stateid unless the server explicitly
2084 * informs us the stateid is unrecognized. */
2085 if (status != -NFS4ERR_BAD_STATEID)
2086 nfs41_free_stateid(server, &stateid, cred);
2087 nfs_finish_clear_delegation_stateid(state);
2094 * nfs41_check_open_stateid - possibly free an open stateid
2096 * @state: NFSv4 state for an inode
2098 * Returns NFS_OK if recovery for this stateid is now finished.
2099 * Otherwise a negative NFS4ERR value is returned.
2101 static int nfs41_check_open_stateid(struct nfs4_state *state)
2103 struct nfs_server *server = NFS_SERVER(state->inode);
2104 nfs4_stateid *stateid = &state->open_stateid;
2105 struct rpc_cred *cred = state->owner->so_cred;
2108 /* If a state reset has been done, test_stateid is unneeded */
2109 if ((test_bit(NFS_O_RDONLY_STATE, &state->flags) == 0) &&
2110 (test_bit(NFS_O_WRONLY_STATE, &state->flags) == 0) &&
2111 (test_bit(NFS_O_RDWR_STATE, &state->flags) == 0))
2112 return -NFS4ERR_BAD_STATEID;
2114 status = nfs41_test_stateid(server, stateid, cred);
2115 trace_nfs4_test_open_stateid(state, NULL, status);
2116 if (status != NFS_OK) {
2117 /* Free the stateid unless the server explicitly
2118 * informs us the stateid is unrecognized. */
2119 if (status != -NFS4ERR_BAD_STATEID)
2120 nfs41_free_stateid(server, stateid, cred);
2122 clear_bit(NFS_O_RDONLY_STATE, &state->flags);
2123 clear_bit(NFS_O_WRONLY_STATE, &state->flags);
2124 clear_bit(NFS_O_RDWR_STATE, &state->flags);
2125 clear_bit(NFS_OPEN_STATE, &state->flags);
2130 static int nfs41_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state)
2134 nfs41_check_delegation_stateid(state);
2135 status = nfs41_check_open_stateid(state);
2136 if (status != NFS_OK)
2137 status = nfs4_open_expired(sp, state);
2143 * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-*
2144 * fields corresponding to attributes that were used to store the verifier.
2145 * Make sure we clobber those fields in the later setattr call
2147 static inline void nfs4_exclusive_attrset(struct nfs4_opendata *opendata, struct iattr *sattr)
2149 if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_ACCESS) &&
2150 !(sattr->ia_valid & ATTR_ATIME_SET))
2151 sattr->ia_valid |= ATTR_ATIME;
2153 if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_MODIFY) &&
2154 !(sattr->ia_valid & ATTR_MTIME_SET))
2155 sattr->ia_valid |= ATTR_MTIME;
2158 static int _nfs4_open_and_get_state(struct nfs4_opendata *opendata,
2161 struct nfs_open_context *ctx)
2163 struct nfs4_state_owner *sp = opendata->owner;
2164 struct nfs_server *server = sp->so_server;
2165 struct dentry *dentry;
2166 struct nfs4_state *state;
2170 seq = raw_seqcount_begin(&sp->so_reclaim_seqcount);
2172 ret = _nfs4_proc_open(opendata);
2176 state = nfs4_opendata_to_nfs4_state(opendata);
2177 ret = PTR_ERR(state);
2180 if (server->caps & NFS_CAP_POSIX_LOCK)
2181 set_bit(NFS_STATE_POSIX_LOCKS, &state->flags);
2183 dentry = opendata->dentry;
2184 if (dentry->d_inode == NULL) {
2185 /* FIXME: Is this d_drop() ever needed? */
2187 dentry = d_add_unique(dentry, igrab(state->inode));
2188 if (dentry == NULL) {
2189 dentry = opendata->dentry;
2190 } else if (dentry != ctx->dentry) {
2192 ctx->dentry = dget(dentry);
2194 nfs_set_verifier(dentry,
2195 nfs_save_change_attribute(opendata->dir->d_inode));
2198 ret = nfs4_opendata_access(sp->so_cred, opendata, state, fmode, flags);
2203 if (dentry->d_inode == state->inode) {
2204 nfs_inode_attach_open_context(ctx);
2205 if (read_seqcount_retry(&sp->so_reclaim_seqcount, seq))
2206 nfs4_schedule_stateid_recovery(server, state);
2213 * Returns a referenced nfs4_state
2215 static int _nfs4_do_open(struct inode *dir,
2216 struct nfs_open_context *ctx,
2218 struct iattr *sattr,
2219 struct nfs4_label *label,
2222 struct nfs4_state_owner *sp;
2223 struct nfs4_state *state = NULL;
2224 struct nfs_server *server = NFS_SERVER(dir);
2225 struct nfs4_opendata *opendata;
2226 struct dentry *dentry = ctx->dentry;
2227 struct rpc_cred *cred = ctx->cred;
2228 struct nfs4_threshold **ctx_th = &ctx->mdsthreshold;
2229 fmode_t fmode = ctx->mode & (FMODE_READ|FMODE_WRITE|FMODE_EXEC);
2230 enum open_claim_type4 claim = NFS4_OPEN_CLAIM_NULL;
2231 struct nfs4_label *olabel = NULL;
2234 /* Protect against reboot recovery conflicts */
2236 sp = nfs4_get_state_owner(server, cred, GFP_KERNEL);
2238 dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n");
2241 status = nfs4_recover_expired_lease(server);
2243 goto err_put_state_owner;
2244 if (dentry->d_inode != NULL)
2245 nfs4_return_incompatible_delegation(dentry->d_inode, fmode);
2247 if (dentry->d_inode)
2248 claim = NFS4_OPEN_CLAIM_FH;
2249 opendata = nfs4_opendata_alloc(dentry, sp, fmode, flags, sattr,
2250 label, claim, GFP_KERNEL);
2251 if (opendata == NULL)
2252 goto err_put_state_owner;
2255 olabel = nfs4_label_alloc(server, GFP_KERNEL);
2256 if (IS_ERR(olabel)) {
2257 status = PTR_ERR(olabel);
2258 goto err_opendata_put;
2262 if (server->attr_bitmask[2] & FATTR4_WORD2_MDSTHRESHOLD) {
2263 if (!opendata->f_attr.mdsthreshold) {
2264 opendata->f_attr.mdsthreshold = pnfs_mdsthreshold_alloc();
2265 if (!opendata->f_attr.mdsthreshold)
2266 goto err_free_label;
2268 opendata->o_arg.open_bitmap = &nfs4_pnfs_open_bitmap[0];
2270 if (dentry->d_inode != NULL)
2271 opendata->state = nfs4_get_open_state(dentry->d_inode, sp);
2273 status = _nfs4_open_and_get_state(opendata, fmode, flags, ctx);
2275 goto err_free_label;
2278 if ((opendata->o_arg.open_flags & O_EXCL) &&
2279 (opendata->o_arg.createmode != NFS4_CREATE_GUARDED)) {
2280 nfs4_exclusive_attrset(opendata, sattr);
2282 nfs_fattr_init(opendata->o_res.f_attr);
2283 status = nfs4_do_setattr(state->inode, cred,
2284 opendata->o_res.f_attr, sattr,
2285 state, label, olabel);
2287 nfs_setattr_update_inode(state->inode, sattr);
2288 nfs_post_op_update_inode(state->inode, opendata->o_res.f_attr);
2289 nfs_setsecurity(state->inode, opendata->o_res.f_attr, olabel);
2292 if (opendata->file_created)
2293 *opened |= FILE_CREATED;
2295 if (pnfs_use_threshold(ctx_th, opendata->f_attr.mdsthreshold, server)) {
2296 *ctx_th = opendata->f_attr.mdsthreshold;
2297 opendata->f_attr.mdsthreshold = NULL;
2300 nfs4_label_free(olabel);
2302 nfs4_opendata_put(opendata);
2303 nfs4_put_state_owner(sp);
2306 nfs4_label_free(olabel);
2308 nfs4_opendata_put(opendata);
2309 err_put_state_owner:
2310 nfs4_put_state_owner(sp);
2316 static struct nfs4_state *nfs4_do_open(struct inode *dir,
2317 struct nfs_open_context *ctx,
2319 struct iattr *sattr,
2320 struct nfs4_label *label,
2323 struct nfs_server *server = NFS_SERVER(dir);
2324 struct nfs4_exception exception = { };
2325 struct nfs4_state *res;
2329 status = _nfs4_do_open(dir, ctx, flags, sattr, label, opened);
2331 trace_nfs4_open_file(ctx, flags, status);
2334 /* NOTE: BAD_SEQID means the server and client disagree about the
2335 * book-keeping w.r.t. state-changing operations
2336 * (OPEN/CLOSE/LOCK/LOCKU...)
2337 * It is actually a sign of a bug on the client or on the server.
2339 * If we receive a BAD_SEQID error in the particular case of
2340 * doing an OPEN, we assume that nfs_increment_open_seqid() will
2341 * have unhashed the old state_owner for us, and that we can
2342 * therefore safely retry using a new one. We should still warn
2343 * the user though...
2345 if (status == -NFS4ERR_BAD_SEQID) {
2346 pr_warn_ratelimited("NFS: v4 server %s "
2347 " returned a bad sequence-id error!\n",
2348 NFS_SERVER(dir)->nfs_client->cl_hostname);
2349 exception.retry = 1;
2353 * BAD_STATEID on OPEN means that the server cancelled our
2354 * state before it received the OPEN_CONFIRM.
2355 * Recover by retrying the request as per the discussion
2356 * on Page 181 of RFC3530.
2358 if (status == -NFS4ERR_BAD_STATEID) {
2359 exception.retry = 1;
2362 if (status == -EAGAIN) {
2363 /* We must have found a delegation */
2364 exception.retry = 1;
2367 if (nfs4_clear_cap_atomic_open_v1(server, status, &exception))
2369 res = ERR_PTR(nfs4_handle_exception(server,
2370 status, &exception));
2371 } while (exception.retry);
2375 static int _nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred,
2376 struct nfs_fattr *fattr, struct iattr *sattr,
2377 struct nfs4_state *state, struct nfs4_label *ilabel,
2378 struct nfs4_label *olabel)
2380 struct nfs_server *server = NFS_SERVER(inode);
2381 struct nfs_setattrargs arg = {
2382 .fh = NFS_FH(inode),
2385 .bitmask = server->attr_bitmask,
2388 struct nfs_setattrres res = {
2393 struct rpc_message msg = {
2394 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETATTR],
2399 unsigned long timestamp = jiffies;
2404 arg.bitmask = nfs4_bitmask(server, ilabel);
2406 arg.bitmask = nfs4_bitmask(server, olabel);
2408 nfs_fattr_init(fattr);
2410 /* Servers should only apply open mode checks for file size changes */
2411 truncate = (sattr->ia_valid & ATTR_SIZE) ? true : false;
2412 fmode = truncate ? FMODE_WRITE : FMODE_READ;
2414 if (nfs4_copy_delegation_stateid(&arg.stateid, inode, fmode)) {
2415 /* Use that stateid */
2416 } else if (truncate && state != NULL) {
2417 struct nfs_lockowner lockowner = {
2418 .l_owner = current->files,
2419 .l_pid = current->tgid,
2421 if (!nfs4_valid_open_stateid(state))
2423 if (nfs4_select_rw_stateid(&arg.stateid, state, FMODE_WRITE,
2424 &lockowner) == -EIO)
2427 nfs4_stateid_copy(&arg.stateid, &zero_stateid);
2429 status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1);
2430 if (status == 0 && state != NULL)
2431 renew_lease(server, timestamp);
2435 static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred,
2436 struct nfs_fattr *fattr, struct iattr *sattr,
2437 struct nfs4_state *state, struct nfs4_label *ilabel,
2438 struct nfs4_label *olabel)
2440 struct nfs_server *server = NFS_SERVER(inode);
2441 struct nfs4_exception exception = {
2447 err = _nfs4_do_setattr(inode, cred, fattr, sattr, state, ilabel, olabel);
2448 trace_nfs4_setattr(inode, err);
2450 case -NFS4ERR_OPENMODE:
2451 if (!(sattr->ia_valid & ATTR_SIZE)) {
2452 pr_warn_once("NFSv4: server %s is incorrectly "
2453 "applying open mode checks to "
2454 "a SETATTR that is not "
2455 "changing file size.\n",
2456 server->nfs_client->cl_hostname);
2458 if (state && !(state->state & FMODE_WRITE)) {
2460 if (sattr->ia_valid & ATTR_OPEN)
2465 err = nfs4_handle_exception(server, err, &exception);
2466 } while (exception.retry);
2471 struct nfs4_closedata {
2472 struct inode *inode;
2473 struct nfs4_state *state;
2474 struct nfs_closeargs arg;
2475 struct nfs_closeres res;
2476 struct nfs_fattr fattr;
2477 unsigned long timestamp;
2482 static void nfs4_free_closedata(void *data)
2484 struct nfs4_closedata *calldata = data;
2485 struct nfs4_state_owner *sp = calldata->state->owner;
2486 struct super_block *sb = calldata->state->inode->i_sb;
2489 pnfs_roc_release(calldata->state->inode);
2490 nfs4_put_open_state(calldata->state);
2491 nfs_free_seqid(calldata->arg.seqid);
2492 nfs4_put_state_owner(sp);
2493 nfs_sb_deactive(sb);
2497 static void nfs4_close_clear_stateid_flags(struct nfs4_state *state,
2500 spin_lock(&state->owner->so_lock);
2501 clear_bit(NFS_O_RDWR_STATE, &state->flags);
2502 switch (fmode & (FMODE_READ|FMODE_WRITE)) {
2504 clear_bit(NFS_O_RDONLY_STATE, &state->flags);
2507 clear_bit(NFS_O_WRONLY_STATE, &state->flags);
2510 clear_bit(NFS_O_RDONLY_STATE, &state->flags);
2511 clear_bit(NFS_O_WRONLY_STATE, &state->flags);
2512 clear_bit(NFS_OPEN_STATE, &state->flags);
2514 spin_unlock(&state->owner->so_lock);
2517 static void nfs4_close_done(struct rpc_task *task, void *data)
2519 struct nfs4_closedata *calldata = data;
2520 struct nfs4_state *state = calldata->state;
2521 struct nfs_server *server = NFS_SERVER(calldata->inode);
2523 dprintk("%s: begin!\n", __func__);
2524 if (!nfs4_sequence_done(task, &calldata->res.seq_res))
2526 trace_nfs4_close(state, &calldata->arg, &calldata->res, task->tk_status);
2527 /* hmm. we are done with the inode, and in the process of freeing
2528 * the state_owner. we keep this around to process errors
2530 switch (task->tk_status) {
2533 pnfs_roc_set_barrier(state->inode,
2534 calldata->roc_barrier);
2535 nfs_set_open_stateid(state, &calldata->res.stateid, 0);
2536 renew_lease(server, calldata->timestamp);
2538 case -NFS4ERR_ADMIN_REVOKED:
2539 case -NFS4ERR_STALE_STATEID:
2540 case -NFS4ERR_OLD_STATEID:
2541 case -NFS4ERR_BAD_STATEID:
2542 case -NFS4ERR_EXPIRED:
2543 if (calldata->arg.fmode == 0)
2546 if (nfs4_async_handle_error(task, server, state) == -EAGAIN) {
2547 rpc_restart_call_prepare(task);
2551 nfs4_close_clear_stateid_flags(state, calldata->arg.fmode);
2553 nfs_release_seqid(calldata->arg.seqid);
2554 nfs_refresh_inode(calldata->inode, calldata->res.fattr);
2555 dprintk("%s: done, ret = %d!\n", __func__, task->tk_status);
2558 static void nfs4_close_prepare(struct rpc_task *task, void *data)
2560 struct nfs4_closedata *calldata = data;
2561 struct nfs4_state *state = calldata->state;
2562 struct inode *inode = calldata->inode;
2563 bool is_rdonly, is_wronly, is_rdwr;
2566 dprintk("%s: begin!\n", __func__);
2567 if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0)
2570 task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE];
2571 spin_lock(&state->owner->so_lock);
2572 is_rdwr = test_bit(NFS_O_RDWR_STATE, &state->flags);
2573 is_rdonly = test_bit(NFS_O_RDONLY_STATE, &state->flags);
2574 is_wronly = test_bit(NFS_O_WRONLY_STATE, &state->flags);
2575 /* Calculate the change in open mode */
2576 calldata->arg.fmode = 0;
2577 if (state->n_rdwr == 0) {
2578 if (state->n_rdonly == 0)
2579 call_close |= is_rdonly;
2581 calldata->arg.fmode |= FMODE_READ;
2582 if (state->n_wronly == 0)
2583 call_close |= is_wronly;
2585 calldata->arg.fmode |= FMODE_WRITE;
2587 calldata->arg.fmode |= FMODE_READ|FMODE_WRITE;
2589 if (calldata->arg.fmode == 0)
2590 call_close |= is_rdwr;
2592 if (!nfs4_valid_open_stateid(state))
2594 spin_unlock(&state->owner->so_lock);
2597 /* Note: exit _without_ calling nfs4_close_done */
2601 if (calldata->arg.fmode == 0) {
2602 task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE];
2603 if (calldata->roc &&
2604 pnfs_roc_drain(inode, &calldata->roc_barrier, task)) {
2605 nfs_release_seqid(calldata->arg.seqid);
2610 nfs_fattr_init(calldata->res.fattr);
2611 calldata->timestamp = jiffies;
2612 if (nfs4_setup_sequence(NFS_SERVER(inode),
2613 &calldata->arg.seq_args,
2614 &calldata->res.seq_res,
2616 nfs_release_seqid(calldata->arg.seqid);
2617 dprintk("%s: done!\n", __func__);
2620 task->tk_action = NULL;
2622 nfs4_sequence_done(task, &calldata->res.seq_res);
2625 static const struct rpc_call_ops nfs4_close_ops = {
2626 .rpc_call_prepare = nfs4_close_prepare,
2627 .rpc_call_done = nfs4_close_done,
2628 .rpc_release = nfs4_free_closedata,
2632 * It is possible for data to be read/written from a mem-mapped file
2633 * after the sys_close call (which hits the vfs layer as a flush).
2634 * This means that we can't safely call nfsv4 close on a file until
2635 * the inode is cleared. This in turn means that we are not good
2636 * NFSv4 citizens - we do not indicate to the server to update the file's
2637 * share state even when we are done with one of the three share
2638 * stateid's in the inode.
2640 * NOTE: Caller must be holding the sp->so_owner semaphore!
2642 int nfs4_do_close(struct nfs4_state *state, gfp_t gfp_mask, int wait)
2644 struct nfs_server *server = NFS_SERVER(state->inode);
2645 struct nfs4_closedata *calldata;
2646 struct nfs4_state_owner *sp = state->owner;
2647 struct rpc_task *task;
2648 struct rpc_message msg = {
2649 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE],
2650 .rpc_cred = state->owner->so_cred,
2652 struct rpc_task_setup task_setup_data = {
2653 .rpc_client = server->client,
2654 .rpc_message = &msg,
2655 .callback_ops = &nfs4_close_ops,
2656 .workqueue = nfsiod_workqueue,
2657 .flags = RPC_TASK_ASYNC,
2659 int status = -ENOMEM;
2661 nfs4_state_protect(server->nfs_client, NFS_SP4_MACH_CRED_CLEANUP,
2662 &task_setup_data.rpc_client, &msg);
2664 calldata = kzalloc(sizeof(*calldata), gfp_mask);
2665 if (calldata == NULL)
2667 nfs4_init_sequence(&calldata->arg.seq_args, &calldata->res.seq_res, 1);
2668 calldata->inode = state->inode;
2669 calldata->state = state;
2670 calldata->arg.fh = NFS_FH(state->inode);
2671 calldata->arg.stateid = &state->open_stateid;
2672 /* Serialization for the sequence id */
2673 calldata->arg.seqid = nfs_alloc_seqid(&state->owner->so_seqid, gfp_mask);
2674 if (calldata->arg.seqid == NULL)
2675 goto out_free_calldata;
2676 calldata->arg.fmode = 0;
2677 calldata->arg.bitmask = server->cache_consistency_bitmask;
2678 calldata->res.fattr = &calldata->fattr;
2679 calldata->res.seqid = calldata->arg.seqid;
2680 calldata->res.server = server;
2681 calldata->roc = pnfs_roc(state->inode);
2682 nfs_sb_active(calldata->inode->i_sb);
2684 msg.rpc_argp = &calldata->arg;
2685 msg.rpc_resp = &calldata->res;
2686 task_setup_data.callback_data = calldata;
2687 task = rpc_run_task(&task_setup_data);
2689 return PTR_ERR(task);
2692 status = rpc_wait_for_completion_task(task);
2698 nfs4_put_open_state(state);
2699 nfs4_put_state_owner(sp);
2703 static struct inode *
2704 nfs4_atomic_open(struct inode *dir, struct nfs_open_context *ctx,
2705 int open_flags, struct iattr *attr, int *opened)
2707 struct nfs4_state *state;
2708 struct nfs4_label l = {0, 0, 0, NULL}, *label = NULL;
2710 label = nfs4_label_init_security(dir, ctx->dentry, attr, &l);
2712 /* Protect against concurrent sillydeletes */
2713 state = nfs4_do_open(dir, ctx, open_flags, attr, label, opened);
2715 nfs4_label_release_security(label);
2718 return ERR_CAST(state);
2719 return state->inode;
2722 static void nfs4_close_context(struct nfs_open_context *ctx, int is_sync)
2724 if (ctx->state == NULL)
2727 nfs4_close_sync(ctx->state, ctx->mode);
2729 nfs4_close_state(ctx->state, ctx->mode);
2732 #define FATTR4_WORD1_NFS40_MASK (2*FATTR4_WORD1_MOUNTED_ON_FILEID - 1UL)
2733 #define FATTR4_WORD2_NFS41_MASK (2*FATTR4_WORD2_SUPPATTR_EXCLCREAT - 1UL)
2734 #define FATTR4_WORD2_NFS42_MASK (2*FATTR4_WORD2_CHANGE_SECURITY_LABEL - 1UL)
2736 static int _nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle)
2738 struct nfs4_server_caps_arg args = {
2741 struct nfs4_server_caps_res res = {};
2742 struct rpc_message msg = {
2743 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SERVER_CAPS],
2749 status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0);
2751 /* Sanity check the server answers */
2752 switch (server->nfs_client->cl_minorversion) {
2754 res.attr_bitmask[1] &= FATTR4_WORD1_NFS40_MASK;
2755 res.attr_bitmask[2] = 0;
2758 res.attr_bitmask[2] &= FATTR4_WORD2_NFS41_MASK;
2761 res.attr_bitmask[2] &= FATTR4_WORD2_NFS42_MASK;
2763 memcpy(server->attr_bitmask, res.attr_bitmask, sizeof(server->attr_bitmask));
2764 server->caps &= ~(NFS_CAP_ACLS|NFS_CAP_HARDLINKS|
2765 NFS_CAP_SYMLINKS|NFS_CAP_FILEID|
2766 NFS_CAP_MODE|NFS_CAP_NLINK|NFS_CAP_OWNER|
2767 NFS_CAP_OWNER_GROUP|NFS_CAP_ATIME|
2768 NFS_CAP_CTIME|NFS_CAP_MTIME|
2769 NFS_CAP_SECURITY_LABEL);
2770 if (res.attr_bitmask[0] & FATTR4_WORD0_ACL &&
2771 res.acl_bitmask & ACL4_SUPPORT_ALLOW_ACL)
2772 server->caps |= NFS_CAP_ACLS;
2773 if (res.has_links != 0)
2774 server->caps |= NFS_CAP_HARDLINKS;
2775 if (res.has_symlinks != 0)
2776 server->caps |= NFS_CAP_SYMLINKS;
2777 if (res.attr_bitmask[0] & FATTR4_WORD0_FILEID)
2778 server->caps |= NFS_CAP_FILEID;
2779 if (res.attr_bitmask[1] & FATTR4_WORD1_MODE)
2780 server->caps |= NFS_CAP_MODE;
2781 if (res.attr_bitmask[1] & FATTR4_WORD1_NUMLINKS)
2782 server->caps |= NFS_CAP_NLINK;
2783 if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER)
2784 server->caps |= NFS_CAP_OWNER;
2785 if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER_GROUP)
2786 server->caps |= NFS_CAP_OWNER_GROUP;
2787 if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_ACCESS)
2788 server->caps |= NFS_CAP_ATIME;
2789 if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_METADATA)
2790 server->caps |= NFS_CAP_CTIME;
2791 if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_MODIFY)
2792 server->caps |= NFS_CAP_MTIME;
2793 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
2794 if (res.attr_bitmask[2] & FATTR4_WORD2_SECURITY_LABEL)
2795 server->caps |= NFS_CAP_SECURITY_LABEL;
2797 memcpy(server->attr_bitmask_nl, res.attr_bitmask,
2798 sizeof(server->attr_bitmask));
2799 server->attr_bitmask_nl[2] &= ~FATTR4_WORD2_SECURITY_LABEL;
2801 memcpy(server->cache_consistency_bitmask, res.attr_bitmask, sizeof(server->cache_consistency_bitmask));
2802 server->cache_consistency_bitmask[0] &= FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE;
2803 server->cache_consistency_bitmask[1] &= FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY;
2804 server->cache_consistency_bitmask[2] = 0;
2805 server->acl_bitmask = res.acl_bitmask;
2806 server->fh_expire_type = res.fh_expire_type;
2812 int nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle)
2814 struct nfs4_exception exception = { };
2817 err = nfs4_handle_exception(server,
2818 _nfs4_server_capabilities(server, fhandle),
2820 } while (exception.retry);
2824 static int _nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle,
2825 struct nfs_fsinfo *info)
2828 struct nfs4_lookup_root_arg args = {
2831 struct nfs4_lookup_res res = {
2833 .fattr = info->fattr,
2836 struct rpc_message msg = {
2837 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP_ROOT],
2842 bitmask[0] = nfs4_fattr_bitmap[0];
2843 bitmask[1] = nfs4_fattr_bitmap[1];
2845 * Process the label in the upcoming getfattr
2847 bitmask[2] = nfs4_fattr_bitmap[2] & ~FATTR4_WORD2_SECURITY_LABEL;
2849 nfs_fattr_init(info->fattr);
2850 return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0);
2853 static int nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle,
2854 struct nfs_fsinfo *info)
2856 struct nfs4_exception exception = { };
2859 err = _nfs4_lookup_root(server, fhandle, info);
2860 trace_nfs4_lookup_root(server, fhandle, info->fattr, err);
2863 case -NFS4ERR_WRONGSEC:
2866 err = nfs4_handle_exception(server, err, &exception);
2868 } while (exception.retry);
2873 static int nfs4_lookup_root_sec(struct nfs_server *server, struct nfs_fh *fhandle,
2874 struct nfs_fsinfo *info, rpc_authflavor_t flavor)
2876 struct rpc_auth_create_args auth_args = {
2877 .pseudoflavor = flavor,
2879 struct rpc_auth *auth;
2882 auth = rpcauth_create(&auth_args, server->client);
2887 ret = nfs4_lookup_root(server, fhandle, info);
2893 * Retry pseudoroot lookup with various security flavors. We do this when:
2895 * NFSv4.0: the PUTROOTFH operation returns NFS4ERR_WRONGSEC
2896 * NFSv4.1: the server does not support the SECINFO_NO_NAME operation
2898 * Returns zero on success, or a negative NFS4ERR value, or a
2899 * negative errno value.
2901 static int nfs4_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle,
2902 struct nfs_fsinfo *info)
2904 /* Per 3530bis 15.33.5 */
2905 static const rpc_authflavor_t flav_array[] = {
2909 RPC_AUTH_UNIX, /* courtesy */
2912 int status = -EPERM;
2915 if (server->auth_info.flavor_len > 0) {
2916 /* try each flavor specified by user */
2917 for (i = 0; i < server->auth_info.flavor_len; i++) {
2918 status = nfs4_lookup_root_sec(server, fhandle, info,
2919 server->auth_info.flavors[i]);
2920 if (status == -NFS4ERR_WRONGSEC || status == -EACCES)
2925 /* no flavors specified by user, try default list */
2926 for (i = 0; i < ARRAY_SIZE(flav_array); i++) {
2927 status = nfs4_lookup_root_sec(server, fhandle, info,
2929 if (status == -NFS4ERR_WRONGSEC || status == -EACCES)
2936 * -EACCESS could mean that the user doesn't have correct permissions
2937 * to access the mount. It could also mean that we tried to mount
2938 * with a gss auth flavor, but rpc.gssd isn't running. Either way,
2939 * existing mount programs don't handle -EACCES very well so it should
2940 * be mapped to -EPERM instead.
2942 if (status == -EACCES)
2947 static int nfs4_do_find_root_sec(struct nfs_server *server,
2948 struct nfs_fh *fhandle, struct nfs_fsinfo *info)
2950 int mv = server->nfs_client->cl_minorversion;
2951 return nfs_v4_minor_ops[mv]->find_root_sec(server, fhandle, info);
2955 * nfs4_proc_get_rootfh - get file handle for server's pseudoroot
2956 * @server: initialized nfs_server handle
2957 * @fhandle: we fill in the pseudo-fs root file handle
2958 * @info: we fill in an FSINFO struct
2959 * @auth_probe: probe the auth flavours
2961 * Returns zero on success, or a negative errno.
2963 int nfs4_proc_get_rootfh(struct nfs_server *server, struct nfs_fh *fhandle,
2964 struct nfs_fsinfo *info,
2969 switch (auth_probe) {
2971 status = nfs4_lookup_root(server, fhandle, info);
2972 if (status != -NFS4ERR_WRONGSEC)
2975 status = nfs4_do_find_root_sec(server, fhandle, info);
2979 status = nfs4_server_capabilities(server, fhandle);
2981 status = nfs4_do_fsinfo(server, fhandle, info);
2983 return nfs4_map_errors(status);
2986 static int nfs4_proc_get_root(struct nfs_server *server, struct nfs_fh *mntfh,
2987 struct nfs_fsinfo *info)
2990 struct nfs_fattr *fattr = info->fattr;
2991 struct nfs4_label *label = NULL;
2993 error = nfs4_server_capabilities(server, mntfh);
2995 dprintk("nfs4_get_root: getcaps error = %d\n", -error);
2999 label = nfs4_label_alloc(server, GFP_KERNEL);
3001 return PTR_ERR(label);
3003 error = nfs4_proc_getattr(server, mntfh, fattr, label);
3005 dprintk("nfs4_get_root: getattr error = %d\n", -error);
3006 goto err_free_label;
3009 if (fattr->valid & NFS_ATTR_FATTR_FSID &&
3010 !nfs_fsid_equal(&server->fsid, &fattr->fsid))
3011 memcpy(&server->fsid, &fattr->fsid, sizeof(server->fsid));
3014 nfs4_label_free(label);
3020 * Get locations and (maybe) other attributes of a referral.
3021 * Note that we'll actually follow the referral later when
3022 * we detect fsid mismatch in inode revalidation
3024 static int nfs4_get_referral(struct rpc_clnt *client, struct inode *dir,
3025 const struct qstr *name, struct nfs_fattr *fattr,
3026 struct nfs_fh *fhandle)
3028 int status = -ENOMEM;
3029 struct page *page = NULL;
3030 struct nfs4_fs_locations *locations = NULL;
3032 page = alloc_page(GFP_KERNEL);
3035 locations = kmalloc(sizeof(struct nfs4_fs_locations), GFP_KERNEL);
3036 if (locations == NULL)
3039 status = nfs4_proc_fs_locations(client, dir, name, locations, page);
3044 * If the fsid didn't change, this is a migration event, not a
3045 * referral. Cause us to drop into the exception handler, which
3046 * will kick off migration recovery.
3048 if (nfs_fsid_equal(&NFS_SERVER(dir)->fsid, &locations->fattr.fsid)) {
3049 dprintk("%s: server did not return a different fsid for"
3050 " a referral at %s\n", __func__, name->name);
3051 status = -NFS4ERR_MOVED;
3054 /* Fixup attributes for the nfs_lookup() call to nfs_fhget() */
3055 nfs_fixup_referral_attributes(&locations->fattr);
3057 /* replace the lookup nfs_fattr with the locations nfs_fattr */
3058 memcpy(fattr, &locations->fattr, sizeof(struct nfs_fattr));
3059 memset(fhandle, 0, sizeof(struct nfs_fh));
3067 static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle,
3068 struct nfs_fattr *fattr, struct nfs4_label *label)
3070 struct nfs4_getattr_arg args = {
3072 .bitmask = server->attr_bitmask,
3074 struct nfs4_getattr_res res = {
3079 struct rpc_message msg = {
3080 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETATTR],
3085 args.bitmask = nfs4_bitmask(server, label);
3087 nfs_fattr_init(fattr);
3088 return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0);
3091 static int nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle,
3092 struct nfs_fattr *fattr, struct nfs4_label *label)
3094 struct nfs4_exception exception = { };
3097 err = _nfs4_proc_getattr(server, fhandle, fattr, label);
3098 trace_nfs4_getattr(server, fhandle, fattr, err);
3099 err = nfs4_handle_exception(server, err,
3101 } while (exception.retry);
3106 * The file is not closed if it is opened due to the a request to change
3107 * the size of the file. The open call will not be needed once the
3108 * VFS layer lookup-intents are implemented.
3110 * Close is called when the inode is destroyed.
3111 * If we haven't opened the file for O_WRONLY, we
3112 * need to in the size_change case to obtain a stateid.
3115 * Because OPEN is always done by name in nfsv4, it is
3116 * possible that we opened a different file by the same
3117 * name. We can recognize this race condition, but we
3118 * can't do anything about it besides returning an error.
3120 * This will be fixed with VFS changes (lookup-intent).
3123 nfs4_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr,
3124 struct iattr *sattr)
3126 struct inode *inode = dentry->d_inode;
3127 struct rpc_cred *cred = NULL;
3128 struct nfs4_state *state = NULL;
3129 struct nfs4_label *label = NULL;
3132 if (pnfs_ld_layoutret_on_setattr(inode))
3133 pnfs_commit_and_return_layout(inode);
3135 nfs_fattr_init(fattr);
3137 /* Deal with open(O_TRUNC) */
3138 if (sattr->ia_valid & ATTR_OPEN)
3139 sattr->ia_valid &= ~(ATTR_MTIME|ATTR_CTIME);
3141 /* Optimization: if the end result is no change, don't RPC */
3142 if ((sattr->ia_valid & ~(ATTR_FILE|ATTR_OPEN)) == 0)
3145 /* Search for an existing open(O_WRITE) file */
3146 if (sattr->ia_valid & ATTR_FILE) {
3147 struct nfs_open_context *ctx;
3149 ctx = nfs_file_open_context(sattr->ia_file);
3156 label = nfs4_label_alloc(NFS_SERVER(inode), GFP_KERNEL);
3158 return PTR_ERR(label);
3160 status = nfs4_do_setattr(inode, cred, fattr, sattr, state, NULL, label);
3162 nfs_setattr_update_inode(inode, sattr);
3163 nfs_setsecurity(inode, fattr, label);
3165 nfs4_label_free(label);
3169 static int _nfs4_proc_lookup(struct rpc_clnt *clnt, struct inode *dir,
3170 const struct qstr *name, struct nfs_fh *fhandle,
3171 struct nfs_fattr *fattr, struct nfs4_label *label)
3173 struct nfs_server *server = NFS_SERVER(dir);
3175 struct nfs4_lookup_arg args = {
3176 .bitmask = server->attr_bitmask,
3177 .dir_fh = NFS_FH(dir),
3180 struct nfs4_lookup_res res = {
3186 struct rpc_message msg = {
3187 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP],
3192 args.bitmask = nfs4_bitmask(server, label);
3194 nfs_fattr_init(fattr);
3196 dprintk("NFS call lookup %s\n", name->name);
3197 status = nfs4_call_sync(clnt, server, &msg, &args.seq_args, &res.seq_res, 0);
3198 dprintk("NFS reply lookup: %d\n", status);
3202 static void nfs_fixup_secinfo_attributes(struct nfs_fattr *fattr)
3204 fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE |
3205 NFS_ATTR_FATTR_NLINK | NFS_ATTR_FATTR_MOUNTPOINT;
3206 fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO;
3210 static int nfs4_proc_lookup_common(struct rpc_clnt **clnt, struct inode *dir,
3211 struct qstr *name, struct nfs_fh *fhandle,
3212 struct nfs_fattr *fattr, struct nfs4_label *label)
3214 struct nfs4_exception exception = { };
3215 struct rpc_clnt *client = *clnt;
3218 err = _nfs4_proc_lookup(client, dir, name, fhandle, fattr, label);
3219 trace_nfs4_lookup(dir, name, err);
3221 case -NFS4ERR_BADNAME:
3224 case -NFS4ERR_MOVED:
3225 err = nfs4_get_referral(client, dir, name, fattr, fhandle);
3227 case -NFS4ERR_WRONGSEC:
3229 if (client != *clnt)
3231 client = nfs4_create_sec_client(client, dir, name);
3233 return PTR_ERR(client);
3235 exception.retry = 1;
3238 err = nfs4_handle_exception(NFS_SERVER(dir), err, &exception);
3240 } while (exception.retry);
3245 else if (client != *clnt)
3246 rpc_shutdown_client(client);
3251 static int nfs4_proc_lookup(struct inode *dir, struct qstr *name,
3252 struct nfs_fh *fhandle, struct nfs_fattr *fattr,
3253 struct nfs4_label *label)
3256 struct rpc_clnt *client = NFS_CLIENT(dir);
3258 status = nfs4_proc_lookup_common(&client, dir, name, fhandle, fattr, label);
3259 if (client != NFS_CLIENT(dir)) {
3260 rpc_shutdown_client(client);
3261 nfs_fixup_secinfo_attributes(fattr);
3267 nfs4_proc_lookup_mountpoint(struct inode *dir, struct qstr *name,
3268 struct nfs_fh *fhandle, struct nfs_fattr *fattr)
3270 struct rpc_clnt *client = NFS_CLIENT(dir);
3273 status = nfs4_proc_lookup_common(&client, dir, name, fhandle, fattr, NULL);
3275 return ERR_PTR(status);
3276 return (client == NFS_CLIENT(dir)) ? rpc_clone_client(client) : client;
3279 static int _nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry)
3281 struct nfs_server *server = NFS_SERVER(inode);
3282 struct nfs4_accessargs args = {
3283 .fh = NFS_FH(inode),
3284 .bitmask = server->cache_consistency_bitmask,
3286 struct nfs4_accessres res = {
3289 struct rpc_message msg = {
3290 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_ACCESS],
3293 .rpc_cred = entry->cred,
3295 int mode = entry->mask;
3299 * Determine which access bits we want to ask for...
3301 if (mode & MAY_READ)
3302 args.access |= NFS4_ACCESS_READ;
3303 if (S_ISDIR(inode->i_mode)) {
3304 if (mode & MAY_WRITE)
3305 args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND | NFS4_ACCESS_DELETE;
3306 if (mode & MAY_EXEC)
3307 args.access |= NFS4_ACCESS_LOOKUP;
3309 if (mode & MAY_WRITE)
3310 args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND;
3311 if (mode & MAY_EXEC)
3312 args.access |= NFS4_ACCESS_EXECUTE;
3315 res.fattr = nfs_alloc_fattr();
3316 if (res.fattr == NULL)
3319 status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0);
3321 nfs_access_set_mask(entry, res.access);
3322 nfs_refresh_inode(inode, res.fattr);
3324 nfs_free_fattr(res.fattr);
3328 static int nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry)
3330 struct nfs4_exception exception = { };
3333 err = _nfs4_proc_access(inode, entry);
3334 trace_nfs4_access(inode, err);
3335 err = nfs4_handle_exception(NFS_SERVER(inode), err,
3337 } while (exception.retry);
3342 * TODO: For the time being, we don't try to get any attributes
3343 * along with any of the zero-copy operations READ, READDIR,
3346 * In the case of the first three, we want to put the GETATTR
3347 * after the read-type operation -- this is because it is hard
3348 * to predict the length of a GETATTR response in v4, and thus
3349 * align the READ data correctly. This means that the GETATTR
3350 * may end up partially falling into the page cache, and we should
3351 * shift it into the 'tail' of the xdr_buf before processing.
3352 * To do this efficiently, we need to know the total length
3353 * of data received, which doesn't seem to be available outside
3356 * In the case of WRITE, we also want to put the GETATTR after
3357 * the operation -- in this case because we want to make sure
3358 * we get the post-operation mtime and size.
3360 * Both of these changes to the XDR layer would in fact be quite
3361 * minor, but I decided to leave them for a subsequent patch.
3363 static int _nfs4_proc_readlink(struct inode *inode, struct page *page,
3364 unsigned int pgbase, unsigned int pglen)
3366 struct nfs4_readlink args = {
3367 .fh = NFS_FH(inode),
3372 struct nfs4_readlink_res res;
3373 struct rpc_message msg = {
3374 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READLINK],
3379 return nfs4_call_sync(NFS_SERVER(inode)->client, NFS_SERVER(inode), &msg, &args.seq_args, &res.seq_res, 0);
3382 static int nfs4_proc_readlink(struct inode *inode, struct page *page,
3383 unsigned int pgbase, unsigned int pglen)
3385 struct nfs4_exception exception = { };
3388 err = _nfs4_proc_readlink(inode, page, pgbase, pglen);
3389 trace_nfs4_readlink(inode, err);
3390 err = nfs4_handle_exception(NFS_SERVER(inode), err,
3392 } while (exception.retry);
3397 * This is just for mknod. open(O_CREAT) will always do ->open_context().
3400 nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
3403 struct nfs4_label l, *ilabel = NULL;
3404 struct nfs_open_context *ctx;
3405 struct nfs4_state *state;
3409 ctx = alloc_nfs_open_context(dentry, FMODE_READ);
3411 return PTR_ERR(ctx);
3413 ilabel = nfs4_label_init_security(dir, dentry, sattr, &l);
3415 sattr->ia_mode &= ~current_umask();
3416 state = nfs4_do_open(dir, ctx, flags, sattr, ilabel, &opened);
3417 if (IS_ERR(state)) {
3418 status = PTR_ERR(state);
3422 nfs4_label_release_security(ilabel);
3423 put_nfs_open_context(ctx);
3427 static int _nfs4_proc_remove(struct inode *dir, struct qstr *name)
3429 struct nfs_server *server = NFS_SERVER(dir);
3430 struct nfs_removeargs args = {
3434 struct nfs_removeres res = {
3437 struct rpc_message msg = {
3438 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE],
3444 status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 1);
3446 update_changeattr(dir, &res.cinfo);
3450 static int nfs4_proc_remove(struct inode *dir, struct qstr *name)
3452 struct nfs4_exception exception = { };
3455 err = _nfs4_proc_remove(dir, name);
3456 trace_nfs4_remove(dir, name, err);
3457 err = nfs4_handle_exception(NFS_SERVER(dir), err,
3459 } while (exception.retry);
3463 static void nfs4_proc_unlink_setup(struct rpc_message *msg, struct inode *dir)
3465 struct nfs_server *server = NFS_SERVER(dir);
3466 struct nfs_removeargs *args = msg->rpc_argp;
3467 struct nfs_removeres *res = msg->rpc_resp;
3469 res->server = server;
3470 msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE];
3471 nfs4_init_sequence(&args->seq_args, &res->seq_res, 1);
3473 nfs_fattr_init(res->dir_attr);
3476 static void nfs4_proc_unlink_rpc_prepare(struct rpc_task *task, struct nfs_unlinkdata *data)
3478 nfs4_setup_sequence(NFS_SERVER(data->dir),
3479 &data->args.seq_args,
3484 static int nfs4_proc_unlink_done(struct rpc_task *task, struct inode *dir)
3486 struct nfs_unlinkdata *data = task->tk_calldata;
3487 struct nfs_removeres *res = &data->res;
3489 if (!nfs4_sequence_done(task, &res->seq_res))
3491 if (nfs4_async_handle_error(task, res->server, NULL) == -EAGAIN)
3493 update_changeattr(dir, &res->cinfo);
3497 static void nfs4_proc_rename_setup(struct rpc_message *msg, struct inode *dir)
3499 struct nfs_server *server = NFS_SERVER(dir);
3500 struct nfs_renameargs *arg = msg->rpc_argp;
3501 struct nfs_renameres *res = msg->rpc_resp;
3503 msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME];
3504 res->server = server;
3505 nfs4_init_sequence(&arg->seq_args, &res->seq_res, 1);
3508 static void nfs4_proc_rename_rpc_prepare(struct rpc_task *task, struct nfs_renamedata *data)
3510 nfs4_setup_sequence(NFS_SERVER(data->old_dir),
3511 &data->args.seq_args,
3516 static int nfs4_proc_rename_done(struct rpc_task *task, struct inode *old_dir,
3517 struct inode *new_dir)
3519 struct nfs_renamedata *data = task->tk_calldata;
3520 struct nfs_renameres *res = &data->res;
3522 if (!nfs4_sequence_done(task, &res->seq_res))
3524 if (nfs4_async_handle_error(task, res->server, NULL) == -EAGAIN)
3527 update_changeattr(old_dir, &res->old_cinfo);
3528 update_changeattr(new_dir, &res->new_cinfo);
3532 static int _nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name,
3533 struct inode *new_dir, struct qstr *new_name)
3535 struct nfs_server *server = NFS_SERVER(old_dir);
3536 struct nfs_renameargs arg = {
3537 .old_dir = NFS_FH(old_dir),
3538 .new_dir = NFS_FH(new_dir),
3539 .old_name = old_name,
3540 .new_name = new_name,
3542 struct nfs_renameres res = {
3545 struct rpc_message msg = {
3546 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME],
3550 int status = -ENOMEM;
3552 status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1);
3554 update_changeattr(old_dir, &res.old_cinfo);
3555 update_changeattr(new_dir, &res.new_cinfo);
3560 static int nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name,
3561 struct inode *new_dir, struct qstr *new_name)
3563 struct nfs4_exception exception = { };
3566 err = _nfs4_proc_rename(old_dir, old_name,
3568 trace_nfs4_rename(old_dir, old_name, new_dir, new_name, err);
3569 err = nfs4_handle_exception(NFS_SERVER(old_dir), err,
3571 } while (exception.retry);
3575 static int _nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name)
3577 struct nfs_server *server = NFS_SERVER(inode);
3578 struct nfs4_link_arg arg = {
3579 .fh = NFS_FH(inode),
3580 .dir_fh = NFS_FH(dir),
3582 .bitmask = server->attr_bitmask,
3584 struct nfs4_link_res res = {
3588 struct rpc_message msg = {
3589 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LINK],
3593 int status = -ENOMEM;
3595 res.fattr = nfs_alloc_fattr();
3596 if (res.fattr == NULL)
3599 res.label = nfs4_label_alloc(server, GFP_KERNEL);
3600 if (IS_ERR(res.label)) {
3601 status = PTR_ERR(res.label);
3604 arg.bitmask = nfs4_bitmask(server, res.label);
3606 status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1);
3608 update_changeattr(dir, &res.cinfo);
3609 status = nfs_post_op_update_inode(inode, res.fattr);
3611 nfs_setsecurity(inode, res.fattr, res.label);
3615 nfs4_label_free(res.label);
3618 nfs_free_fattr(res.fattr);
3622 static int nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name)
3624 struct nfs4_exception exception = { };
3627 err = nfs4_handle_exception(NFS_SERVER(inode),
3628 _nfs4_proc_link(inode, dir, name),
3630 } while (exception.retry);
3634 struct nfs4_createdata {
3635 struct rpc_message msg;
3636 struct nfs4_create_arg arg;
3637 struct nfs4_create_res res;
3639 struct nfs_fattr fattr;
3640 struct nfs4_label *label;
3643 static struct nfs4_createdata *nfs4_alloc_createdata(struct inode *dir,
3644 struct qstr *name, struct iattr *sattr, u32 ftype)
3646 struct nfs4_createdata *data;
3648 data = kzalloc(sizeof(*data), GFP_KERNEL);
3650 struct nfs_server *server = NFS_SERVER(dir);
3652 data->label = nfs4_label_alloc(server, GFP_KERNEL);
3653 if (IS_ERR(data->label))
3656 data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE];
3657 data->msg.rpc_argp = &data->arg;
3658 data->msg.rpc_resp = &data->res;
3659 data->arg.dir_fh = NFS_FH(dir);
3660 data->arg.server = server;
3661 data->arg.name = name;
3662 data->arg.attrs = sattr;
3663 data->arg.ftype = ftype;
3664 data->arg.bitmask = nfs4_bitmask(server, data->label);
3665 data->res.server = server;
3666 data->res.fh = &data->fh;
3667 data->res.fattr = &data->fattr;
3668 data->res.label = data->label;
3669 nfs_fattr_init(data->res.fattr);
3677 static int nfs4_do_create(struct inode *dir, struct dentry *dentry, struct nfs4_createdata *data)
3679 int status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &data->msg,
3680 &data->arg.seq_args, &data->res.seq_res, 1);
3682 update_changeattr(dir, &data->res.dir_cinfo);
3683 status = nfs_instantiate(dentry, data->res.fh, data->res.fattr, data->res.label);
3688 static void nfs4_free_createdata(struct nfs4_createdata *data)
3690 nfs4_label_free(data->label);
3694 static int _nfs4_proc_symlink(struct inode *dir, struct dentry *dentry,
3695 struct page *page, unsigned int len, struct iattr *sattr,
3696 struct nfs4_label *label)
3698 struct nfs4_createdata *data;
3699 int status = -ENAMETOOLONG;
3701 if (len > NFS4_MAXPATHLEN)
3705 data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4LNK);
3709 data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SYMLINK];
3710 data->arg.u.symlink.pages = &page;
3711 data->arg.u.symlink.len = len;
3712 data->arg.label = label;
3714 status = nfs4_do_create(dir, dentry, data);
3716 nfs4_free_createdata(data);
3721 static int nfs4_proc_symlink(struct inode *dir, struct dentry *dentry,
3722 struct page *page, unsigned int len, struct iattr *sattr)
3724 struct nfs4_exception exception = { };
3725 struct nfs4_label l, *label = NULL;
3728 label = nfs4_label_init_security(dir, dentry, sattr, &l);
3731 err = _nfs4_proc_symlink(dir, dentry, page, len, sattr, label);
3732 trace_nfs4_symlink(dir, &dentry->d_name, err);
3733 err = nfs4_handle_exception(NFS_SERVER(dir), err,
3735 } while (exception.retry);
3737 nfs4_label_release_security(label);
3741 static int _nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry,
3742 struct iattr *sattr, struct nfs4_label *label)
3744 struct nfs4_createdata *data;
3745 int status = -ENOMEM;
3747 data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4DIR);
3751 data->arg.label = label;
3752 status = nfs4_do_create(dir, dentry, data);
3754 nfs4_free_createdata(data);
3759 static int nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry,
3760 struct iattr *sattr)
3762 struct nfs4_exception exception = { };
3763 struct nfs4_label l, *label = NULL;
3766 label = nfs4_label_init_security(dir, dentry, sattr, &l);
3768 sattr->ia_mode &= ~current_umask();
3770 err = _nfs4_proc_mkdir(dir, dentry, sattr, label);
3771 trace_nfs4_mkdir(dir, &dentry->d_name, err);
3772 err = nfs4_handle_exception(NFS_SERVER(dir), err,
3774 } while (exception.retry);
3775 nfs4_label_release_security(label);
3780 static int _nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred,
3781 u64 cookie, struct page **pages, unsigned int count, int plus)
3783 struct inode *dir = dentry->d_inode;
3784 struct nfs4_readdir_arg args = {
3789 .bitmask = NFS_SERVER(dentry->d_inode)->attr_bitmask,
3792 struct nfs4_readdir_res res;
3793 struct rpc_message msg = {
3794 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READDIR],
3801 dprintk("%s: dentry = %pd2, cookie = %Lu\n", __func__,
3803 (unsigned long long)cookie);
3804 nfs4_setup_readdir(cookie, NFS_I(dir)->cookieverf, dentry, &args);
3805 res.pgbase = args.pgbase;
3806 status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &msg, &args.seq_args, &res.seq_res, 0);
3808 memcpy(NFS_I(dir)->cookieverf, res.verifier.data, NFS4_VERIFIER_SIZE);
3809 status += args.pgbase;
3812 nfs_invalidate_atime(dir);
3814 dprintk("%s: returns %d\n", __func__, status);
3818 static int nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred,
3819 u64 cookie, struct page **pages, unsigned int count, int plus)
3821 struct nfs4_exception exception = { };
3824 err = _nfs4_proc_readdir(dentry, cred, cookie,
3825 pages, count, plus);
3826 trace_nfs4_readdir(dentry->d_inode, err);
3827 err = nfs4_handle_exception(NFS_SERVER(dentry->d_inode), err,
3829 } while (exception.retry);
3833 static int _nfs4_proc_mknod(struct inode *dir, struct dentry *dentry,
3834 struct iattr *sattr, struct nfs4_label *label, dev_t rdev)
3836 struct nfs4_createdata *data;
3837 int mode = sattr->ia_mode;
3838 int status = -ENOMEM;
3840 data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4SOCK);
3845 data->arg.ftype = NF4FIFO;
3846 else if (S_ISBLK(mode)) {
3847 data->arg.ftype = NF4BLK;
3848 data->arg.u.device.specdata1 = MAJOR(rdev);
3849 data->arg.u.device.specdata2 = MINOR(rdev);
3851 else if (S_ISCHR(mode)) {
3852 data->arg.ftype = NF4CHR;
3853 data->arg.u.device.specdata1 = MAJOR(rdev);
3854 data->arg.u.device.specdata2 = MINOR(rdev);
3855 } else if (!S_ISSOCK(mode)) {
3860 data->arg.label = label;
3861 status = nfs4_do_create(dir, dentry, data);
3863 nfs4_free_createdata(data);
3868 static int nfs4_proc_mknod(struct inode *dir, struct dentry *dentry,
3869 struct iattr *sattr, dev_t rdev)
3871 struct nfs4_exception exception = { };
3872 struct nfs4_label l, *label = NULL;
3875 label = nfs4_label_init_security(dir, dentry, sattr, &l);
3877 sattr->ia_mode &= ~current_umask();
3879 err = _nfs4_proc_mknod(dir, dentry, sattr, label, rdev);
3880 trace_nfs4_mknod(dir, &dentry->d_name, err);
3881 err = nfs4_handle_exception(NFS_SERVER(dir), err,
3883 } while (exception.retry);
3885 nfs4_label_release_security(label);
3890 static int _nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle,
3891 struct nfs_fsstat *fsstat)
3893 struct nfs4_statfs_arg args = {
3895 .bitmask = server->attr_bitmask,
3897 struct nfs4_statfs_res res = {
3900 struct rpc_message msg = {
3901 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_STATFS],
3906 nfs_fattr_init(fsstat->fattr);
3907 return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0);
3910 static int nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsstat *fsstat)
3912 struct nfs4_exception exception = { };
3915 err = nfs4_handle_exception(server,
3916 _nfs4_proc_statfs(server, fhandle, fsstat),
3918 } while (exception.retry);
3922 static int _nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle,
3923 struct nfs_fsinfo *fsinfo)
3925 struct nfs4_fsinfo_arg args = {
3927 .bitmask = server->attr_bitmask,
3929 struct nfs4_fsinfo_res res = {
3932 struct rpc_message msg = {
3933 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FSINFO],
3938 return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0);
3941 static int nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo)
3943 struct nfs4_exception exception = { };
3944 unsigned long now = jiffies;
3948 err = _nfs4_do_fsinfo(server, fhandle, fsinfo);
3949 trace_nfs4_fsinfo(server, fhandle, fsinfo->fattr, err);
3951 struct nfs_client *clp = server->nfs_client;
3953 spin_lock(&clp->cl_lock);
3954 clp->cl_lease_time = fsinfo->lease_time * HZ;
3955 clp->cl_last_renewal = now;
3956 spin_unlock(&clp->cl_lock);
3959 err = nfs4_handle_exception(server, err, &exception);
3960 } while (exception.retry);
3964 static int nfs4_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo)
3968 nfs_fattr_init(fsinfo->fattr);
3969 error = nfs4_do_fsinfo(server, fhandle, fsinfo);
3971 /* block layout checks this! */
3972 server->pnfs_blksize = fsinfo->blksize;
3973 set_pnfs_layoutdriver(server, fhandle, fsinfo->layouttype);
3979 static int _nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle,
3980 struct nfs_pathconf *pathconf)
3982 struct nfs4_pathconf_arg args = {
3984 .bitmask = server->attr_bitmask,
3986 struct nfs4_pathconf_res res = {
3987 .pathconf = pathconf,
3989 struct rpc_message msg = {
3990 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_PATHCONF],
3995 /* None of the pathconf attributes are mandatory to implement */
3996 if ((args.bitmask[0] & nfs4_pathconf_bitmap[0]) == 0) {
3997 memset(pathconf, 0, sizeof(*pathconf));
4001 nfs_fattr_init(pathconf->fattr);
4002 return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0);
4005 static int nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle,
4006 struct nfs_pathconf *pathconf)
4008 struct nfs4_exception exception = { };
4012 err = nfs4_handle_exception(server,
4013 _nfs4_proc_pathconf(server, fhandle, pathconf),
4015 } while (exception.retry);
4019 int nfs4_set_rw_stateid(nfs4_stateid *stateid,
4020 const struct nfs_open_context *ctx,
4021 const struct nfs_lock_context *l_ctx,
4024 const struct nfs_lockowner *lockowner = NULL;
4027 lockowner = &l_ctx->lockowner;
4028 return nfs4_select_rw_stateid(stateid, ctx->state, fmode, lockowner);
4030 EXPORT_SYMBOL_GPL(nfs4_set_rw_stateid);
4032 static bool nfs4_stateid_is_current(nfs4_stateid *stateid,
4033 const struct nfs_open_context *ctx,
4034 const struct nfs_lock_context *l_ctx,
4037 nfs4_stateid current_stateid;
4039 /* If the current stateid represents a lost lock, then exit */
4040 if (nfs4_set_rw_stateid(¤t_stateid, ctx, l_ctx, fmode) == -EIO)
4042 return nfs4_stateid_match(stateid, ¤t_stateid);
4045 static bool nfs4_error_stateid_expired(int err)
4048 case -NFS4ERR_DELEG_REVOKED:
4049 case -NFS4ERR_ADMIN_REVOKED:
4050 case -NFS4ERR_BAD_STATEID:
4051 case -NFS4ERR_STALE_STATEID:
4052 case -NFS4ERR_OLD_STATEID:
4053 case -NFS4ERR_OPENMODE:
4054 case -NFS4ERR_EXPIRED:
4060 void __nfs4_read_done_cb(struct nfs_read_data *data)
4062 nfs_invalidate_atime(data->header->inode);
4065 static int nfs4_read_done_cb(struct rpc_task *task, struct nfs_read_data *data)
4067 struct nfs_server *server = NFS_SERVER(data->header->inode);
4069 trace_nfs4_read(data, task->tk_status);
4070 if (nfs4_async_handle_error(task, server, data->args.context->state) == -EAGAIN) {
4071 rpc_restart_call_prepare(task);
4075 __nfs4_read_done_cb(data);
4076 if (task->tk_status > 0)
4077 renew_lease(server, data->timestamp);
4081 static bool nfs4_read_stateid_changed(struct rpc_task *task,
4082 struct nfs_readargs *args)
4085 if (!nfs4_error_stateid_expired(task->tk_status) ||
4086 nfs4_stateid_is_current(&args->stateid,
4091 rpc_restart_call_prepare(task);
4095 static int nfs4_read_done(struct rpc_task *task, struct nfs_read_data *data)
4098 dprintk("--> %s\n", __func__);
4100 if (!nfs4_sequence_done(task, &data->res.seq_res))
4102 if (nfs4_read_stateid_changed(task, &data->args))
4104 return data->read_done_cb ? data->read_done_cb(task, data) :
4105 nfs4_read_done_cb(task, data);
4108 static void nfs4_proc_read_setup(struct nfs_read_data *data, struct rpc_message *msg)
4110 data->timestamp = jiffies;
4111 data->read_done_cb = nfs4_read_done_cb;
4112 msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READ];
4113 nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 0);
4116 static int nfs4_proc_read_rpc_prepare(struct rpc_task *task, struct nfs_read_data *data)
4118 if (nfs4_setup_sequence(NFS_SERVER(data->header->inode),
4119 &data->args.seq_args,
4123 if (nfs4_set_rw_stateid(&data->args.stateid, data->args.context,
4124 data->args.lock_context, FMODE_READ) == -EIO)
4126 if (unlikely(test_bit(NFS_CONTEXT_BAD, &data->args.context->flags)))
4131 static int nfs4_write_done_cb(struct rpc_task *task, struct nfs_write_data *data)
4133 struct inode *inode = data->header->inode;
4135 trace_nfs4_write(data, task->tk_status);
4136 if (nfs4_async_handle_error(task, NFS_SERVER(inode), data->args.context->state) == -EAGAIN) {
4137 rpc_restart_call_prepare(task);
4140 if (task->tk_status >= 0) {
4141 renew_lease(NFS_SERVER(inode), data->timestamp);
4142 nfs_post_op_update_inode_force_wcc(inode, &data->fattr);
4147 static bool nfs4_write_stateid_changed(struct rpc_task *task,
4148 struct nfs_writeargs *args)
4151 if (!nfs4_error_stateid_expired(task->tk_status) ||
4152 nfs4_stateid_is_current(&args->stateid,
4157 rpc_restart_call_prepare(task);
4161 static int nfs4_write_done(struct rpc_task *task, struct nfs_write_data *data)
4163 if (!nfs4_sequence_done(task, &data->res.seq_res))
4165 if (nfs4_write_stateid_changed(task, &data->args))
4167 return data->write_done_cb ? data->write_done_cb(task, data) :
4168 nfs4_write_done_cb(task, data);
4172 bool nfs4_write_need_cache_consistency_data(const struct nfs_write_data *data)
4174 const struct nfs_pgio_header *hdr = data->header;
4176 /* Don't request attributes for pNFS or O_DIRECT writes */
4177 if (data->ds_clp != NULL || hdr->dreq != NULL)
4179 /* Otherwise, request attributes if and only if we don't hold
4182 return nfs4_have_delegation(hdr->inode, FMODE_READ) == 0;
4185 static void nfs4_proc_write_setup(struct nfs_write_data *data, struct rpc_message *msg)
4187 struct nfs_server *server = NFS_SERVER(data->header->inode);
4189 if (!nfs4_write_need_cache_consistency_data(data)) {
4190 data->args.bitmask = NULL;
4191 data->res.fattr = NULL;
4193 data->args.bitmask = server->cache_consistency_bitmask;
4195 if (!data->write_done_cb)
4196 data->write_done_cb = nfs4_write_done_cb;
4197 data->res.server = server;
4198 data->timestamp = jiffies;
4200 msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_WRITE];
4201 nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 1);
4204 static int nfs4_proc_write_rpc_prepare(struct rpc_task *task, struct nfs_write_data *data)
4206 if (nfs4_setup_sequence(NFS_SERVER(data->header->inode),
4207 &data->args.seq_args,
4211 if (nfs4_set_rw_stateid(&data->args.stateid, data->args.context,
4212 data->args.lock_context, FMODE_WRITE) == -EIO)
4214 if (unlikely(test_bit(NFS_CONTEXT_BAD, &data->args.context->flags)))
4219 static void nfs4_proc_commit_rpc_prepare(struct rpc_task *task, struct nfs_commit_data *data)
4221 nfs4_setup_sequence(NFS_SERVER(data->inode),
4222 &data->args.seq_args,
4227 static int nfs4_commit_done_cb(struct rpc_task *task, struct nfs_commit_data *data)
4229 struct inode *inode = data->inode;
4231 trace_nfs4_commit(data, task->tk_status);
4232 if (nfs4_async_handle_error(task, NFS_SERVER(inode), NULL) == -EAGAIN) {
4233 rpc_restart_call_prepare(task);
4239 static int nfs4_commit_done(struct rpc_task *task, struct nfs_commit_data *data)
4241 if (!nfs4_sequence_done(task, &data->res.seq_res))
4243 return data->commit_done_cb(task, data);
4246 static void nfs4_proc_commit_setup(struct nfs_commit_data *data, struct rpc_message *msg)
4248 struct nfs_server *server = NFS_SERVER(data->inode);
4250 if (data->commit_done_cb == NULL)
4251 data->commit_done_cb = nfs4_commit_done_cb;
4252 data->res.server = server;
4253 msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_COMMIT];
4254 nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 1);
4257 struct nfs4_renewdata {
4258 struct nfs_client *client;
4259 unsigned long timestamp;
4263 * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special
4264 * standalone procedure for queueing an asynchronous RENEW.
4266 static void nfs4_renew_release(void *calldata)
4268 struct nfs4_renewdata *data = calldata;
4269 struct nfs_client *clp = data->client;
4271 if (atomic_read(&clp->cl_count) > 1)
4272 nfs4_schedule_state_renewal(clp);
4273 nfs_put_client(clp);
4277 static void nfs4_renew_done(struct rpc_task *task, void *calldata)
4279 struct nfs4_renewdata *data = calldata;
4280 struct nfs_client *clp = data->client;
4281 unsigned long timestamp = data->timestamp;
4283 trace_nfs4_renew_async(clp, task->tk_status);
4284 switch (task->tk_status) {
4287 case -NFS4ERR_LEASE_MOVED:
4288 nfs4_schedule_lease_moved_recovery(clp);
4291 /* Unless we're shutting down, schedule state recovery! */
4292 if (test_bit(NFS_CS_RENEWD, &clp->cl_res_state) == 0)
4294 if (task->tk_status != NFS4ERR_CB_PATH_DOWN) {
4295 nfs4_schedule_lease_recovery(clp);
4298 nfs4_schedule_path_down_recovery(clp);
4300 do_renew_lease(clp, timestamp);
4303 static const struct rpc_call_ops nfs4_renew_ops = {
4304 .rpc_call_done = nfs4_renew_done,
4305 .rpc_release = nfs4_renew_release,
4308 static int nfs4_proc_async_renew(struct nfs_client *clp, struct rpc_cred *cred, unsigned renew_flags)
4310 struct rpc_message msg = {
4311 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW],
4315 struct nfs4_renewdata *data;
4317 if (renew_flags == 0)
4319 if (!atomic_inc_not_zero(&clp->cl_count))
4321 data = kmalloc(sizeof(*data), GFP_NOFS);
4325 data->timestamp = jiffies;
4326 return rpc_call_async(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT,
4327 &nfs4_renew_ops, data);
4330 static int nfs4_proc_renew(struct nfs_client *clp, struct rpc_cred *cred)
4332 struct rpc_message msg = {
4333 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW],
4337 unsigned long now = jiffies;
4340 status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT);
4343 do_renew_lease(clp, now);
4347 static inline int nfs4_server_supports_acls(struct nfs_server *server)
4349 return server->caps & NFS_CAP_ACLS;
4352 /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_SIZE, and that
4353 * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_SIZE) bytes on
4356 #define NFS4ACL_MAXPAGES DIV_ROUND_UP(XATTR_SIZE_MAX, PAGE_SIZE)
4358 static int buf_to_pages_noslab(const void *buf, size_t buflen,
4359 struct page **pages, unsigned int *pgbase)
4361 struct page *newpage, **spages;
4367 len = min_t(size_t, PAGE_SIZE, buflen);
4368 newpage = alloc_page(GFP_KERNEL);
4370 if (newpage == NULL)
4372 memcpy(page_address(newpage), buf, len);
4377 } while (buflen != 0);
4383 __free_page(spages[rc-1]);
4387 struct nfs4_cached_acl {
4393 static void nfs4_set_cached_acl(struct inode *inode, struct nfs4_cached_acl *acl)
4395 struct nfs_inode *nfsi = NFS_I(inode);
4397 spin_lock(&inode->i_lock);
4398 kfree(nfsi->nfs4_acl);
4399 nfsi->nfs4_acl = acl;
4400 spin_unlock(&inode->i_lock);
4403 static void nfs4_zap_acl_attr(struct inode *inode)
4405 nfs4_set_cached_acl(inode, NULL);
4408 static inline ssize_t nfs4_read_cached_acl(struct inode *inode, char *buf, size_t buflen)
4410 struct nfs_inode *nfsi = NFS_I(inode);
4411 struct nfs4_cached_acl *acl;
4414 spin_lock(&inode->i_lock);
4415 acl = nfsi->nfs4_acl;
4418 if (buf == NULL) /* user is just asking for length */
4420 if (acl->cached == 0)
4422 ret = -ERANGE; /* see getxattr(2) man page */
4423 if (acl->len > buflen)
4425 memcpy(buf, acl->data, acl->len);
4429 spin_unlock(&inode->i_lock);
4433 static void nfs4_write_cached_acl(struct inode *inode, struct page **pages, size_t pgbase, size_t acl_len)
4435 struct nfs4_cached_acl *acl;
4436 size_t buflen = sizeof(*acl) + acl_len;
4438 if (buflen <= PAGE_SIZE) {
4439 acl = kmalloc(buflen, GFP_KERNEL);
4443 _copy_from_pages(acl->data, pages, pgbase, acl_len);
4445 acl = kmalloc(sizeof(*acl), GFP_KERNEL);
4452 nfs4_set_cached_acl(inode, acl);
4456 * The getxattr API returns the required buffer length when called with a
4457 * NULL buf. The NFSv4 acl tool then calls getxattr again after allocating
4458 * the required buf. On a NULL buf, we send a page of data to the server
4459 * guessing that the ACL request can be serviced by a page. If so, we cache
4460 * up to the page of ACL data, and the 2nd call to getxattr is serviced by
4461 * the cache. If not so, we throw away the page, and cache the required
4462 * length. The next getxattr call will then produce another round trip to
4463 * the server, this time with the input buf of the required size.
4465 static ssize_t __nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen)
4467 struct page *pages[NFS4ACL_MAXPAGES] = {NULL, };
4468 struct nfs_getaclargs args = {
4469 .fh = NFS_FH(inode),
4473 struct nfs_getaclres res = {
4476 struct rpc_message msg = {
4477 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETACL],
4481 unsigned int npages = DIV_ROUND_UP(buflen, PAGE_SIZE);
4482 int ret = -ENOMEM, i;
4484 /* As long as we're doing a round trip to the server anyway,
4485 * let's be prepared for a page of acl data. */
4488 if (npages > ARRAY_SIZE(pages))
4491 for (i = 0; i < npages; i++) {
4492 pages[i] = alloc_page(GFP_KERNEL);
4497 /* for decoding across pages */
4498 res.acl_scratch = alloc_page(GFP_KERNEL);
4499 if (!res.acl_scratch)
4502 args.acl_len = npages * PAGE_SIZE;
4503 args.acl_pgbase = 0;
4505 dprintk("%s buf %p buflen %zu npages %d args.acl_len %zu\n",
4506 __func__, buf, buflen, npages, args.acl_len);
4507 ret = nfs4_call_sync(NFS_SERVER(inode)->client, NFS_SERVER(inode),
4508 &msg, &args.seq_args, &res.seq_res, 0);
4512 /* Handle the case where the passed-in buffer is too short */
4513 if (res.acl_flags & NFS4_ACL_TRUNC) {
4514 /* Did the user only issue a request for the acl length? */
4520 nfs4_write_cached_acl(inode, pages, res.acl_data_offset, res.acl_len);
4522 if (res.acl_len > buflen) {
4526 _copy_from_pages(buf, pages, res.acl_data_offset, res.acl_len);
4531 for (i = 0; i < npages; i++)
4533 __free_page(pages[i]);
4534 if (res.acl_scratch)
4535 __free_page(res.acl_scratch);
4539 static ssize_t nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen)
4541 struct nfs4_exception exception = { };
4544 ret = __nfs4_get_acl_uncached(inode, buf, buflen);
4545 trace_nfs4_get_acl(inode, ret);
4548 ret = nfs4_handle_exception(NFS_SERVER(inode), ret, &exception);
4549 } while (exception.retry);
4553 static ssize_t nfs4_proc_get_acl(struct inode *inode, void *buf, size_t buflen)
4555 struct nfs_server *server = NFS_SERVER(inode);
4558 if (!nfs4_server_supports_acls(server))
4560 ret = nfs_revalidate_inode(server, inode);
4563 if (NFS_I(inode)->cache_validity & NFS_INO_INVALID_ACL)
4564 nfs_zap_acl_cache(inode);
4565 ret = nfs4_read_cached_acl(inode, buf, buflen);
4567 /* -ENOENT is returned if there is no ACL or if there is an ACL
4568 * but no cached acl data, just the acl length */
4570 return nfs4_get_acl_uncached(inode, buf, buflen);
4573 static int __nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen)
4575 struct nfs_server *server = NFS_SERVER(inode);
4576 struct page *pages[NFS4ACL_MAXPAGES];
4577 struct nfs_setaclargs arg = {
4578 .fh = NFS_FH(inode),
4582 struct nfs_setaclres res;
4583 struct rpc_message msg = {
4584 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETACL],
4588 unsigned int npages = DIV_ROUND_UP(buflen, PAGE_SIZE);
4591 if (!nfs4_server_supports_acls(server))
4593 if (npages > ARRAY_SIZE(pages))
4595 i = buf_to_pages_noslab(buf, buflen, arg.acl_pages, &arg.acl_pgbase);
4598 nfs4_inode_return_delegation(inode);
4599 ret = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1);
4602 * Free each page after tx, so the only ref left is
4603 * held by the network stack
4606 put_page(pages[i-1]);
4609 * Acl update can result in inode attribute update.
4610 * so mark the attribute cache invalid.
4612 spin_lock(&inode->i_lock);
4613 NFS_I(inode)->cache_validity |= NFS_INO_INVALID_ATTR;
4614 spin_unlock(&inode->i_lock);
4615 nfs_access_zap_cache(inode);
4616 nfs_zap_acl_cache(inode);
4620 static int nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen)
4622 struct nfs4_exception exception = { };
4625 err = __nfs4_proc_set_acl(inode, buf, buflen);
4626 trace_nfs4_set_acl(inode, err);
4627 err = nfs4_handle_exception(NFS_SERVER(inode), err,
4629 } while (exception.retry);
4633 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
4634 static int _nfs4_get_security_label(struct inode *inode, void *buf,
4637 struct nfs_server *server = NFS_SERVER(inode);
4638 struct nfs_fattr fattr;
4639 struct nfs4_label label = {0, 0, buflen, buf};
4641 u32 bitmask[3] = { 0, 0, FATTR4_WORD2_SECURITY_LABEL };
4642 struct nfs4_getattr_arg arg = {
4643 .fh = NFS_FH(inode),
4646 struct nfs4_getattr_res res = {
4651 struct rpc_message msg = {
4652 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETATTR],
4658 nfs_fattr_init(&fattr);
4660 ret = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 0);
4663 if (!(fattr.valid & NFS_ATTR_FATTR_V4_SECURITY_LABEL))
4665 if (buflen < label.len)
4670 static int nfs4_get_security_label(struct inode *inode, void *buf,
4673 struct nfs4_exception exception = { };
4676 if (!nfs_server_capable(inode, NFS_CAP_SECURITY_LABEL))
4680 err = _nfs4_get_security_label(inode, buf, buflen);
4681 trace_nfs4_get_security_label(inode, err);
4682 err = nfs4_handle_exception(NFS_SERVER(inode), err,
4684 } while (exception.retry);
4688 static int _nfs4_do_set_security_label(struct inode *inode,
4689 struct nfs4_label *ilabel,
4690 struct nfs_fattr *fattr,
4691 struct nfs4_label *olabel)
4694 struct iattr sattr = {0};
4695 struct nfs_server *server = NFS_SERVER(inode);
4696 const u32 bitmask[3] = { 0, 0, FATTR4_WORD2_SECURITY_LABEL };
4697 struct nfs_setattrargs arg = {
4698 .fh = NFS_FH(inode),
4704 struct nfs_setattrres res = {
4709 struct rpc_message msg = {
4710 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETATTR],
4716 nfs4_stateid_copy(&arg.stateid, &zero_stateid);
4718 status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1);
4720 dprintk("%s failed: %d\n", __func__, status);
4725 static int nfs4_do_set_security_label(struct inode *inode,
4726 struct nfs4_label *ilabel,
4727 struct nfs_fattr *fattr,
4728 struct nfs4_label *olabel)
4730 struct nfs4_exception exception = { };
4734 err = _nfs4_do_set_security_label(inode, ilabel,
4736 trace_nfs4_set_security_label(inode, err);
4737 err = nfs4_handle_exception(NFS_SERVER(inode), err,
4739 } while (exception.retry);
4744 nfs4_set_security_label(struct dentry *dentry, const void *buf, size_t buflen)
4746 struct nfs4_label ilabel, *olabel = NULL;
4747 struct nfs_fattr fattr;
4748 struct rpc_cred *cred;
4749 struct inode *inode = dentry->d_inode;
4752 if (!nfs_server_capable(inode, NFS_CAP_SECURITY_LABEL))
4755 nfs_fattr_init(&fattr);
4759 ilabel.label = (char *)buf;
4760 ilabel.len = buflen;
4762 cred = rpc_lookup_cred();
4764 return PTR_ERR(cred);
4766 olabel = nfs4_label_alloc(NFS_SERVER(inode), GFP_KERNEL);
4767 if (IS_ERR(olabel)) {
4768 status = -PTR_ERR(olabel);
4772 status = nfs4_do_set_security_label(inode, &ilabel, &fattr, olabel);
4774 nfs_setsecurity(inode, &fattr, olabel);
4776 nfs4_label_free(olabel);
4781 #endif /* CONFIG_NFS_V4_SECURITY_LABEL */
4785 nfs4_async_handle_error(struct rpc_task *task, const struct nfs_server *server, struct nfs4_state *state)
4787 struct nfs_client *clp = server->nfs_client;
4789 if (task->tk_status >= 0)
4791 switch(task->tk_status) {
4792 case -NFS4ERR_DELEG_REVOKED:
4793 case -NFS4ERR_ADMIN_REVOKED:
4794 case -NFS4ERR_BAD_STATEID:
4797 nfs_remove_bad_delegation(state->inode);
4798 case -NFS4ERR_OPENMODE:
4801 if (nfs4_schedule_stateid_recovery(server, state) < 0)
4802 goto recovery_failed;
4803 goto wait_on_recovery;
4804 case -NFS4ERR_EXPIRED:
4805 if (state != NULL) {
4806 if (nfs4_schedule_stateid_recovery(server, state) < 0)
4807 goto recovery_failed;
4809 case -NFS4ERR_STALE_STATEID:
4810 case -NFS4ERR_STALE_CLIENTID:
4811 nfs4_schedule_lease_recovery(clp);
4812 goto wait_on_recovery;
4813 case -NFS4ERR_MOVED:
4814 if (nfs4_schedule_migration_recovery(server) < 0)
4815 goto recovery_failed;
4816 goto wait_on_recovery;
4817 case -NFS4ERR_LEASE_MOVED:
4818 nfs4_schedule_lease_moved_recovery(clp);
4819 goto wait_on_recovery;
4820 #if defined(CONFIG_NFS_V4_1)
4821 case -NFS4ERR_BADSESSION:
4822 case -NFS4ERR_BADSLOT:
4823 case -NFS4ERR_BAD_HIGH_SLOT:
4824 case -NFS4ERR_DEADSESSION:
4825 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION:
4826 case -NFS4ERR_SEQ_FALSE_RETRY:
4827 case -NFS4ERR_SEQ_MISORDERED:
4828 dprintk("%s ERROR %d, Reset session\n", __func__,
4830 nfs4_schedule_session_recovery(clp->cl_session, task->tk_status);
4831 goto wait_on_recovery;
4832 #endif /* CONFIG_NFS_V4_1 */
4833 case -NFS4ERR_DELAY:
4834 nfs_inc_server_stats(server, NFSIOS_DELAY);
4835 case -NFS4ERR_GRACE:
4836 rpc_delay(task, NFS4_POLL_RETRY_MAX);
4837 case -NFS4ERR_RETRY_UNCACHED_REP:
4838 case -NFS4ERR_OLD_STATEID:
4841 task->tk_status = nfs4_map_errors(task->tk_status);
4844 task->tk_status = -EIO;
4847 rpc_sleep_on(&clp->cl_rpcwaitq, task, NULL);
4848 if (test_bit(NFS4CLNT_MANAGER_RUNNING, &clp->cl_state) == 0)
4849 rpc_wake_up_queued_task(&clp->cl_rpcwaitq, task);
4850 if (test_bit(NFS_MIG_FAILED, &server->mig_status))
4851 goto recovery_failed;
4853 task->tk_status = 0;
4857 static void nfs4_init_boot_verifier(const struct nfs_client *clp,
4858 nfs4_verifier *bootverf)
4862 if (test_bit(NFS4CLNT_PURGE_STATE, &clp->cl_state)) {
4863 /* An impossible timestamp guarantees this value
4864 * will never match a generated boot time. */
4866 verf[1] = cpu_to_be32(NSEC_PER_SEC + 1);
4868 struct nfs_net *nn = net_generic(clp->cl_net, nfs_net_id);
4869 verf[0] = cpu_to_be32(nn->boot_time.tv_sec);
4870 verf[1] = cpu_to_be32(nn->boot_time.tv_nsec);
4872 memcpy(bootverf->data, verf, sizeof(bootverf->data));
4876 nfs4_init_nonuniform_client_string(const struct nfs_client *clp,
4877 char *buf, size_t len)
4879 unsigned int result;
4882 result = scnprintf(buf, len, "Linux NFSv4.0 %s/%s %s",
4884 rpc_peeraddr2str(clp->cl_rpcclient,
4886 rpc_peeraddr2str(clp->cl_rpcclient,
4887 RPC_DISPLAY_PROTO));
4893 nfs4_init_uniform_client_string(const struct nfs_client *clp,
4894 char *buf, size_t len)
4896 const char *nodename = clp->cl_rpcclient->cl_nodename;
4898 if (nfs4_client_id_uniquifier[0] != '\0')
4899 return scnprintf(buf, len, "Linux NFSv%u.%u %s/%s",
4900 clp->rpc_ops->version,
4901 clp->cl_minorversion,
4902 nfs4_client_id_uniquifier,
4904 return scnprintf(buf, len, "Linux NFSv%u.%u %s",
4905 clp->rpc_ops->version, clp->cl_minorversion,
4910 * nfs4_proc_setclientid - Negotiate client ID
4911 * @clp: state data structure
4912 * @program: RPC program for NFSv4 callback service
4913 * @port: IP port number for NFS4 callback service
4914 * @cred: RPC credential to use for this call
4915 * @res: where to place the result
4917 * Returns zero, a negative errno, or a negative NFS4ERR status code.
4919 int nfs4_proc_setclientid(struct nfs_client *clp, u32 program,
4920 unsigned short port, struct rpc_cred *cred,
4921 struct nfs4_setclientid_res *res)
4923 nfs4_verifier sc_verifier;
4924 struct nfs4_setclientid setclientid = {
4925 .sc_verifier = &sc_verifier,
4927 .sc_cb_ident = clp->cl_cb_ident,
4929 struct rpc_message msg = {
4930 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID],
4931 .rpc_argp = &setclientid,
4937 /* nfs_client_id4 */
4938 nfs4_init_boot_verifier(clp, &sc_verifier);
4939 if (test_bit(NFS_CS_MIGRATION, &clp->cl_flags))
4940 setclientid.sc_name_len =
4941 nfs4_init_uniform_client_string(clp,
4942 setclientid.sc_name,
4943 sizeof(setclientid.sc_name));
4945 setclientid.sc_name_len =
4946 nfs4_init_nonuniform_client_string(clp,
4947 setclientid.sc_name,
4948 sizeof(setclientid.sc_name));
4951 setclientid.sc_netid_len = scnprintf(setclientid.sc_netid,
4952 sizeof(setclientid.sc_netid), "%s",
4953 rpc_peeraddr2str(clp->cl_rpcclient,
4954 RPC_DISPLAY_NETID));
4956 setclientid.sc_uaddr_len = scnprintf(setclientid.sc_uaddr,
4957 sizeof(setclientid.sc_uaddr), "%s.%u.%u",
4958 clp->cl_ipaddr, port >> 8, port & 255);
4960 dprintk("NFS call setclientid auth=%s, '%.*s'\n",
4961 clp->cl_rpcclient->cl_auth->au_ops->au_name,
4962 setclientid.sc_name_len, setclientid.sc_name);
4963 status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT);
4964 trace_nfs4_setclientid(clp, status);
4965 dprintk("NFS reply setclientid: %d\n", status);
4970 * nfs4_proc_setclientid_confirm - Confirm client ID
4971 * @clp: state data structure
4972 * @res: result of a previous SETCLIENTID
4973 * @cred: RPC credential to use for this call
4975 * Returns zero, a negative errno, or a negative NFS4ERR status code.
4977 int nfs4_proc_setclientid_confirm(struct nfs_client *clp,
4978 struct nfs4_setclientid_res *arg,
4979 struct rpc_cred *cred)
4981 struct rpc_message msg = {
4982 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID_CONFIRM],
4988 dprintk("NFS call setclientid_confirm auth=%s, (client ID %llx)\n",
4989 clp->cl_rpcclient->cl_auth->au_ops->au_name,
4991 status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT);
4992 trace_nfs4_setclientid_confirm(clp, status);
4993 dprintk("NFS reply setclientid_confirm: %d\n", status);
4997 struct nfs4_delegreturndata {
4998 struct nfs4_delegreturnargs args;
4999 struct nfs4_delegreturnres res;
5001 nfs4_stateid stateid;
5002 unsigned long timestamp;
5003 struct nfs_fattr fattr;
5007 static void nfs4_delegreturn_done(struct rpc_task *task, void *calldata)
5009 struct nfs4_delegreturndata *data = calldata;
5011 if (!nfs4_sequence_done(task, &data->res.seq_res))
5014 trace_nfs4_delegreturn_exit(&data->args, &data->res, task->tk_status);
5015 switch (task->tk_status) {
5017 renew_lease(data->res.server, data->timestamp);
5019 case -NFS4ERR_ADMIN_REVOKED:
5020 case -NFS4ERR_DELEG_REVOKED:
5021 case -NFS4ERR_BAD_STATEID:
5022 case -NFS4ERR_OLD_STATEID:
5023 case -NFS4ERR_STALE_STATEID:
5024 case -NFS4ERR_EXPIRED:
5025 task->tk_status = 0;
5028 if (nfs4_async_handle_error(task, data->res.server, NULL) ==
5030 rpc_restart_call_prepare(task);
5034 data->rpc_status = task->tk_status;
5037 static void nfs4_delegreturn_release(void *calldata)
5042 static void nfs4_delegreturn_prepare(struct rpc_task *task, void *data)
5044 struct nfs4_delegreturndata *d_data;
5046 d_data = (struct nfs4_delegreturndata *)data;
5048 nfs4_setup_sequence(d_data->res.server,
5049 &d_data->args.seq_args,
5050 &d_data->res.seq_res,
5054 static const struct rpc_call_ops nfs4_delegreturn_ops = {
5055 .rpc_call_prepare = nfs4_delegreturn_prepare,
5056 .rpc_call_done = nfs4_delegreturn_done,
5057 .rpc_release = nfs4_delegreturn_release,
5060 static int _nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync)
5062 struct nfs4_delegreturndata *data;
5063 struct nfs_server *server = NFS_SERVER(inode);
5064 struct rpc_task *task;
5065 struct rpc_message msg = {
5066 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DELEGRETURN],
5069 struct rpc_task_setup task_setup_data = {
5070 .rpc_client = server->client,
5071 .rpc_message = &msg,
5072 .callback_ops = &nfs4_delegreturn_ops,
5073 .flags = RPC_TASK_ASYNC,
5077 data = kzalloc(sizeof(*data), GFP_NOFS);
5080 nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 1);
5081 data->args.fhandle = &data->fh;
5082 data->args.stateid = &data->stateid;
5083 data->args.bitmask = server->cache_consistency_bitmask;
5084 nfs_copy_fh(&data->fh, NFS_FH(inode));
5085 nfs4_stateid_copy(&data->stateid, stateid);
5086 data->res.fattr = &data->fattr;
5087 data->res.server = server;
5088 nfs_fattr_init(data->res.fattr);
5089 data->timestamp = jiffies;
5090 data->rpc_status = 0;
5092 task_setup_data.callback_data = data;
5093 msg.rpc_argp = &data->args;
5094 msg.rpc_resp = &data->res;
5095 task = rpc_run_task(&task_setup_data);
5097 return PTR_ERR(task);
5100 status = nfs4_wait_for_completion_rpc_task(task);
5103 status = data->rpc_status;
5105 nfs_post_op_update_inode_force_wcc(inode, &data->fattr);
5107 nfs_refresh_inode(inode, &data->fattr);
5113 int nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync)
5115 struct nfs_server *server = NFS_SERVER(inode);
5116 struct nfs4_exception exception = { };
5119 err = _nfs4_proc_delegreturn(inode, cred, stateid, issync);
5120 trace_nfs4_delegreturn(inode, err);
5122 case -NFS4ERR_STALE_STATEID:
5123 case -NFS4ERR_EXPIRED:
5127 err = nfs4_handle_exception(server, err, &exception);
5128 } while (exception.retry);
5132 #define NFS4_LOCK_MINTIMEOUT (1 * HZ)
5133 #define NFS4_LOCK_MAXTIMEOUT (30 * HZ)
5136 * sleep, with exponential backoff, and retry the LOCK operation.
5138 static unsigned long
5139 nfs4_set_lock_task_retry(unsigned long timeout)
5141 freezable_schedule_timeout_killable_unsafe(timeout);
5143 if (timeout > NFS4_LOCK_MAXTIMEOUT)
5144 return NFS4_LOCK_MAXTIMEOUT;
5148 static int _nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request)
5150 struct inode *inode = state->inode;
5151 struct nfs_server *server = NFS_SERVER(inode);
5152 struct nfs_client *clp = server->nfs_client;
5153 struct nfs_lockt_args arg = {
5154 .fh = NFS_FH(inode),
5157 struct nfs_lockt_res res = {
5160 struct rpc_message msg = {
5161 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKT],
5164 .rpc_cred = state->owner->so_cred,
5166 struct nfs4_lock_state *lsp;
5169 arg.lock_owner.clientid = clp->cl_clientid;
5170 status = nfs4_set_lock_state(state, request);
5173 lsp = request->fl_u.nfs4_fl.owner;
5174 arg.lock_owner.id = lsp->ls_seqid.owner_id;
5175 arg.lock_owner.s_dev = server->s_dev;
5176 status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1);
5179 request->fl_type = F_UNLCK;
5181 case -NFS4ERR_DENIED:
5184 request->fl_ops->fl_release_private(request);
5185 request->fl_ops = NULL;
5190 static int nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request)
5192 struct nfs4_exception exception = { };
5196 err = _nfs4_proc_getlk(state, cmd, request);
5197 trace_nfs4_get_lock(request, state, cmd, err);
5198 err = nfs4_handle_exception(NFS_SERVER(state->inode), err,
5200 } while (exception.retry);
5204 static int do_vfs_lock(struct file *file, struct file_lock *fl)
5207 switch (fl->fl_flags & (FL_POSIX|FL_FLOCK)) {
5209 res = posix_lock_file_wait(file, fl);
5212 res = flock_lock_file_wait(file, fl);
5220 struct nfs4_unlockdata {
5221 struct nfs_locku_args arg;
5222 struct nfs_locku_res res;
5223 struct nfs4_lock_state *lsp;
5224 struct nfs_open_context *ctx;
5225 struct file_lock fl;
5226 const struct nfs_server *server;
5227 unsigned long timestamp;
5230 static struct nfs4_unlockdata *nfs4_alloc_unlockdata(struct file_lock *fl,
5231 struct nfs_open_context *ctx,
5232 struct nfs4_lock_state *lsp,
5233 struct nfs_seqid *seqid)
5235 struct nfs4_unlockdata *p;
5236 struct inode *inode = lsp->ls_state->inode;
5238 p = kzalloc(sizeof(*p), GFP_NOFS);
5241 p->arg.fh = NFS_FH(inode);
5243 p->arg.seqid = seqid;
5244 p->res.seqid = seqid;
5245 p->arg.stateid = &lsp->ls_stateid;
5247 atomic_inc(&lsp->ls_count);
5248 /* Ensure we don't close file until we're done freeing locks! */
5249 p->ctx = get_nfs_open_context(ctx);
5250 memcpy(&p->fl, fl, sizeof(p->fl));
5251 p->server = NFS_SERVER(inode);
5255 static void nfs4_locku_release_calldata(void *data)
5257 struct nfs4_unlockdata *calldata = data;
5258 nfs_free_seqid(calldata->arg.seqid);
5259 nfs4_put_lock_state(calldata->lsp);
5260 put_nfs_open_context(calldata->ctx);
5264 static void nfs4_locku_done(struct rpc_task *task, void *data)
5266 struct nfs4_unlockdata *calldata = data;
5268 if (!nfs4_sequence_done(task, &calldata->res.seq_res))
5270 switch (task->tk_status) {
5272 nfs4_stateid_copy(&calldata->lsp->ls_stateid,
5273 &calldata->res.stateid);
5274 renew_lease(calldata->server, calldata->timestamp);
5276 case -NFS4ERR_BAD_STATEID:
5277 case -NFS4ERR_OLD_STATEID:
5278 case -NFS4ERR_STALE_STATEID:
5279 case -NFS4ERR_EXPIRED:
5282 if (nfs4_async_handle_error(task, calldata->server, NULL) == -EAGAIN)
5283 rpc_restart_call_prepare(task);
5285 nfs_release_seqid(calldata->arg.seqid);
5288 static void nfs4_locku_prepare(struct rpc_task *task, void *data)
5290 struct nfs4_unlockdata *calldata = data;
5292 if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0)
5294 if (test_bit(NFS_LOCK_INITIALIZED, &calldata->lsp->ls_flags) == 0) {
5295 /* Note: exit _without_ running nfs4_locku_done */
5298 calldata->timestamp = jiffies;
5299 if (nfs4_setup_sequence(calldata->server,
5300 &calldata->arg.seq_args,
5301 &calldata->res.seq_res,
5303 nfs_release_seqid(calldata->arg.seqid);
5306 task->tk_action = NULL;
5308 nfs4_sequence_done(task, &calldata->res.seq_res);
5311 static const struct rpc_call_ops nfs4_locku_ops = {
5312 .rpc_call_prepare = nfs4_locku_prepare,
5313 .rpc_call_done = nfs4_locku_done,
5314 .rpc_release = nfs4_locku_release_calldata,
5317 static struct rpc_task *nfs4_do_unlck(struct file_lock *fl,
5318 struct nfs_open_context *ctx,
5319 struct nfs4_lock_state *lsp,
5320 struct nfs_seqid *seqid)
5322 struct nfs4_unlockdata *data;
5323 struct rpc_message msg = {
5324 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKU],
5325 .rpc_cred = ctx->cred,
5327 struct rpc_task_setup task_setup_data = {
5328 .rpc_client = NFS_CLIENT(lsp->ls_state->inode),
5329 .rpc_message = &msg,
5330 .callback_ops = &nfs4_locku_ops,
5331 .workqueue = nfsiod_workqueue,
5332 .flags = RPC_TASK_ASYNC,
5335 nfs4_state_protect(NFS_SERVER(lsp->ls_state->inode)->nfs_client,
5336 NFS_SP4_MACH_CRED_CLEANUP, &task_setup_data.rpc_client, &msg);
5338 /* Ensure this is an unlock - when canceling a lock, the
5339 * canceled lock is passed in, and it won't be an unlock.
5341 fl->fl_type = F_UNLCK;
5343 data = nfs4_alloc_unlockdata(fl, ctx, lsp, seqid);
5345 nfs_free_seqid(seqid);
5346 return ERR_PTR(-ENOMEM);
5349 nfs4_init_sequence(&data->arg.seq_args, &data->res.seq_res, 1);
5350 msg.rpc_argp = &data->arg;
5351 msg.rpc_resp = &data->res;
5352 task_setup_data.callback_data = data;
5353 return rpc_run_task(&task_setup_data);
5356 static int nfs4_proc_unlck(struct nfs4_state *state, int cmd, struct file_lock *request)
5358 struct inode *inode = state->inode;
5359 struct nfs4_state_owner *sp = state->owner;
5360 struct nfs_inode *nfsi = NFS_I(inode);
5361 struct nfs_seqid *seqid;
5362 struct nfs4_lock_state *lsp;
5363 struct rpc_task *task;
5365 unsigned char fl_flags = request->fl_flags;
5367 status = nfs4_set_lock_state(state, request);
5368 /* Unlock _before_ we do the RPC call */
5369 request->fl_flags |= FL_EXISTS;
5370 /* Exclude nfs_delegation_claim_locks() */
5371 mutex_lock(&sp->so_delegreturn_mutex);
5372 /* Exclude nfs4_reclaim_open_stateid() - note nesting! */
5373 down_read(&nfsi->rwsem);
5374 if (do_vfs_lock(request->fl_file, request) == -ENOENT) {
5375 up_read(&nfsi->rwsem);
5376 mutex_unlock(&sp->so_delegreturn_mutex);
5379 up_read(&nfsi->rwsem);
5380 mutex_unlock(&sp->so_delegreturn_mutex);
5383 /* Is this a delegated lock? */
5384 lsp = request->fl_u.nfs4_fl.owner;
5385 if (test_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags) == 0)
5387 seqid = nfs_alloc_seqid(&lsp->ls_seqid, GFP_KERNEL);
5391 task = nfs4_do_unlck(request, nfs_file_open_context(request->fl_file), lsp, seqid);
5392 status = PTR_ERR(task);
5395 status = nfs4_wait_for_completion_rpc_task(task);
5398 request->fl_flags = fl_flags;
5399 trace_nfs4_unlock(request, state, F_SETLK, status);
5403 struct nfs4_lockdata {
5404 struct nfs_lock_args arg;
5405 struct nfs_lock_res res;
5406 struct nfs4_lock_state *lsp;
5407 struct nfs_open_context *ctx;
5408 struct file_lock fl;
5409 unsigned long timestamp;
5412 struct nfs_server *server;
5415 static struct nfs4_lockdata *nfs4_alloc_lockdata(struct file_lock *fl,
5416 struct nfs_open_context *ctx, struct nfs4_lock_state *lsp,
5419 struct nfs4_lockdata *p;
5420 struct inode *inode = lsp->ls_state->inode;
5421 struct nfs_server *server = NFS_SERVER(inode);
5423 p = kzalloc(sizeof(*p), gfp_mask);
5427 p->arg.fh = NFS_FH(inode);
5429 p->arg.open_seqid = nfs_alloc_seqid(&lsp->ls_state->owner->so_seqid, gfp_mask);
5430 if (p->arg.open_seqid == NULL)
5432 p->arg.lock_seqid = nfs_alloc_seqid(&lsp->ls_seqid, gfp_mask);
5433 if (p->arg.lock_seqid == NULL)
5434 goto out_free_seqid;
5435 p->arg.lock_stateid = &lsp->ls_stateid;
5436 p->arg.lock_owner.clientid = server->nfs_client->cl_clientid;
5437 p->arg.lock_owner.id = lsp->ls_seqid.owner_id;
5438 p->arg.lock_owner.s_dev = server->s_dev;
5439 p->res.lock_seqid = p->arg.lock_seqid;
5442 atomic_inc(&lsp->ls_count);
5443 p->ctx = get_nfs_open_context(ctx);
5444 memcpy(&p->fl, fl, sizeof(p->fl));
5447 nfs_free_seqid(p->arg.open_seqid);
5453 static void nfs4_lock_prepare(struct rpc_task *task, void *calldata)
5455 struct nfs4_lockdata *data = calldata;
5456 struct nfs4_state *state = data->lsp->ls_state;
5458 dprintk("%s: begin!\n", __func__);
5459 if (nfs_wait_on_sequence(data->arg.lock_seqid, task) != 0)
5461 /* Do we need to do an open_to_lock_owner? */
5462 if (!(data->arg.lock_seqid->sequence->flags & NFS_SEQID_CONFIRMED)) {
5463 if (nfs_wait_on_sequence(data->arg.open_seqid, task) != 0) {
5464 goto out_release_lock_seqid;
5466 data->arg.open_stateid = &state->open_stateid;
5467 data->arg.new_lock_owner = 1;
5468 data->res.open_seqid = data->arg.open_seqid;
5470 data->arg.new_lock_owner = 0;
5471 if (!nfs4_valid_open_stateid(state)) {
5472 data->rpc_status = -EBADF;
5473 task->tk_action = NULL;
5474 goto out_release_open_seqid;
5476 data->timestamp = jiffies;
5477 if (nfs4_setup_sequence(data->server,
5478 &data->arg.seq_args,
5482 out_release_open_seqid:
5483 nfs_release_seqid(data->arg.open_seqid);
5484 out_release_lock_seqid:
5485 nfs_release_seqid(data->arg.lock_seqid);
5487 nfs4_sequence_done(task, &data->res.seq_res);
5488 dprintk("%s: done!, ret = %d\n", __func__, data->rpc_status);
5491 static void nfs4_lock_done(struct rpc_task *task, void *calldata)
5493 struct nfs4_lockdata *data = calldata;
5495 dprintk("%s: begin!\n", __func__);
5497 if (!nfs4_sequence_done(task, &data->res.seq_res))
5500 data->rpc_status = task->tk_status;
5501 if (data->arg.new_lock_owner != 0) {
5502 if (data->rpc_status == 0)
5503 nfs_confirm_seqid(&data->lsp->ls_seqid, 0);
5507 if (data->rpc_status == 0) {
5508 nfs4_stateid_copy(&data->lsp->ls_stateid, &data->res.stateid);
5509 set_bit(NFS_LOCK_INITIALIZED, &data->lsp->ls_flags);
5510 renew_lease(NFS_SERVER(data->ctx->dentry->d_inode), data->timestamp);
5513 dprintk("%s: done, ret = %d!\n", __func__, data->rpc_status);
5516 static void nfs4_lock_release(void *calldata)
5518 struct nfs4_lockdata *data = calldata;
5520 dprintk("%s: begin!\n", __func__);
5521 nfs_free_seqid(data->arg.open_seqid);
5522 if (data->cancelled != 0) {
5523 struct rpc_task *task;
5524 task = nfs4_do_unlck(&data->fl, data->ctx, data->lsp,
5525 data->arg.lock_seqid);
5527 rpc_put_task_async(task);
5528 dprintk("%s: cancelling lock!\n", __func__);
5530 nfs_free_seqid(data->arg.lock_seqid);
5531 nfs4_put_lock_state(data->lsp);
5532 put_nfs_open_context(data->ctx);
5534 dprintk("%s: done!\n", __func__);
5537 static const struct rpc_call_ops nfs4_lock_ops = {
5538 .rpc_call_prepare = nfs4_lock_prepare,
5539 .rpc_call_done = nfs4_lock_done,
5540 .rpc_release = nfs4_lock_release,
5543 static void nfs4_handle_setlk_error(struct nfs_server *server, struct nfs4_lock_state *lsp, int new_lock_owner, int error)
5546 case -NFS4ERR_ADMIN_REVOKED:
5547 case -NFS4ERR_BAD_STATEID:
5548 lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED;
5549 if (new_lock_owner != 0 ||
5550 test_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags) != 0)
5551 nfs4_schedule_stateid_recovery(server, lsp->ls_state);
5553 case -NFS4ERR_STALE_STATEID:
5554 lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED;
5555 case -NFS4ERR_EXPIRED:
5556 nfs4_schedule_lease_recovery(server->nfs_client);
5560 static int _nfs4_do_setlk(struct nfs4_state *state, int cmd, struct file_lock *fl, int recovery_type)
5562 struct nfs4_lockdata *data;
5563 struct rpc_task *task;
5564 struct rpc_message msg = {
5565 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCK],
5566 .rpc_cred = state->owner->so_cred,
5568 struct rpc_task_setup task_setup_data = {
5569 .rpc_client = NFS_CLIENT(state->inode),
5570 .rpc_message = &msg,
5571 .callback_ops = &nfs4_lock_ops,
5572 .workqueue = nfsiod_workqueue,
5573 .flags = RPC_TASK_ASYNC,
5577 dprintk("%s: begin!\n", __func__);
5578 data = nfs4_alloc_lockdata(fl, nfs_file_open_context(fl->fl_file),
5579 fl->fl_u.nfs4_fl.owner,
5580 recovery_type == NFS_LOCK_NEW ? GFP_KERNEL : GFP_NOFS);
5584 data->arg.block = 1;
5585 nfs4_init_sequence(&data->arg.seq_args, &data->res.seq_res, 1);
5586 msg.rpc_argp = &data->arg;
5587 msg.rpc_resp = &data->res;
5588 task_setup_data.callback_data = data;
5589 if (recovery_type > NFS_LOCK_NEW) {
5590 if (recovery_type == NFS_LOCK_RECLAIM)
5591 data->arg.reclaim = NFS_LOCK_RECLAIM;
5592 nfs4_set_sequence_privileged(&data->arg.seq_args);
5594 task = rpc_run_task(&task_setup_data);
5596 return PTR_ERR(task);
5597 ret = nfs4_wait_for_completion_rpc_task(task);
5599 ret = data->rpc_status;
5601 nfs4_handle_setlk_error(data->server, data->lsp,
5602 data->arg.new_lock_owner, ret);
5604 data->cancelled = 1;
5606 dprintk("%s: done, ret = %d!\n", __func__, ret);
5610 static int nfs4_lock_reclaim(struct nfs4_state *state, struct file_lock *request)
5612 struct nfs_server *server = NFS_SERVER(state->inode);
5613 struct nfs4_exception exception = {
5614 .inode = state->inode,
5619 /* Cache the lock if possible... */
5620 if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0)
5622 err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_RECLAIM);
5623 trace_nfs4_lock_reclaim(request, state, F_SETLK, err);
5624 if (err != -NFS4ERR_DELAY)
5626 nfs4_handle_exception(server, err, &exception);
5627 } while (exception.retry);
5631 static int nfs4_lock_expired(struct nfs4_state *state, struct file_lock *request)
5633 struct nfs_server *server = NFS_SERVER(state->inode);
5634 struct nfs4_exception exception = {
5635 .inode = state->inode,
5639 err = nfs4_set_lock_state(state, request);
5642 if (!recover_lost_locks) {
5643 set_bit(NFS_LOCK_LOST, &request->fl_u.nfs4_fl.owner->ls_flags);
5647 if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0)
5649 err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_EXPIRED);
5650 trace_nfs4_lock_expired(request, state, F_SETLK, err);
5654 case -NFS4ERR_GRACE:
5655 case -NFS4ERR_DELAY:
5656 nfs4_handle_exception(server, err, &exception);
5659 } while (exception.retry);
5664 #if defined(CONFIG_NFS_V4_1)
5666 * nfs41_check_expired_locks - possibly free a lock stateid
5668 * @state: NFSv4 state for an inode
5670 * Returns NFS_OK if recovery for this stateid is now finished.
5671 * Otherwise a negative NFS4ERR value is returned.
5673 static int nfs41_check_expired_locks(struct nfs4_state *state)
5675 int status, ret = -NFS4ERR_BAD_STATEID;
5676 struct nfs4_lock_state *lsp;
5677 struct nfs_server *server = NFS_SERVER(state->inode);
5679 list_for_each_entry(lsp, &state->lock_states, ls_locks) {
5680 if (test_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags)) {
5681 struct rpc_cred *cred = lsp->ls_state->owner->so_cred;
5683 status = nfs41_test_stateid(server,
5686 trace_nfs4_test_lock_stateid(state, lsp, status);
5687 if (status != NFS_OK) {
5688 /* Free the stateid unless the server
5689 * informs us the stateid is unrecognized. */
5690 if (status != -NFS4ERR_BAD_STATEID)
5691 nfs41_free_stateid(server,
5694 clear_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags);
5703 static int nfs41_lock_expired(struct nfs4_state *state, struct file_lock *request)
5705 int status = NFS_OK;
5707 if (test_bit(LK_STATE_IN_USE, &state->flags))
5708 status = nfs41_check_expired_locks(state);
5709 if (status != NFS_OK)
5710 status = nfs4_lock_expired(state, request);
5715 static int _nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request)
5717 struct nfs4_state_owner *sp = state->owner;
5718 struct nfs_inode *nfsi = NFS_I(state->inode);
5719 unsigned char fl_flags = request->fl_flags;
5721 int status = -ENOLCK;
5723 if ((fl_flags & FL_POSIX) &&
5724 !test_bit(NFS_STATE_POSIX_LOCKS, &state->flags))
5726 /* Is this a delegated open? */
5727 status = nfs4_set_lock_state(state, request);
5730 request->fl_flags |= FL_ACCESS;
5731 status = do_vfs_lock(request->fl_file, request);
5734 down_read(&nfsi->rwsem);
5735 if (test_bit(NFS_DELEGATED_STATE, &state->flags)) {
5736 /* Yes: cache locks! */
5737 /* ...but avoid races with delegation recall... */
5738 request->fl_flags = fl_flags & ~FL_SLEEP;
5739 status = do_vfs_lock(request->fl_file, request);
5742 seq = raw_seqcount_begin(&sp->so_reclaim_seqcount);
5743 up_read(&nfsi->rwsem);
5744 status = _nfs4_do_setlk(state, cmd, request, NFS_LOCK_NEW);
5747 down_read(&nfsi->rwsem);
5748 if (read_seqcount_retry(&sp->so_reclaim_seqcount, seq)) {
5749 status = -NFS4ERR_DELAY;
5752 /* Note: we always want to sleep here! */
5753 request->fl_flags = fl_flags | FL_SLEEP;
5754 if (do_vfs_lock(request->fl_file, request) < 0)
5755 printk(KERN_WARNING "NFS: %s: VFS is out of sync with lock "
5756 "manager!\n", __func__);
5758 up_read(&nfsi->rwsem);
5760 request->fl_flags = fl_flags;
5764 static int nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request)
5766 struct nfs4_exception exception = {
5768 .inode = state->inode,
5773 err = _nfs4_proc_setlk(state, cmd, request);
5774 trace_nfs4_set_lock(request, state, cmd, err);
5775 if (err == -NFS4ERR_DENIED)
5777 err = nfs4_handle_exception(NFS_SERVER(state->inode),
5779 } while (exception.retry);
5784 nfs4_proc_lock(struct file *filp, int cmd, struct file_lock *request)
5786 struct nfs_open_context *ctx;
5787 struct nfs4_state *state;
5788 unsigned long timeout = NFS4_LOCK_MINTIMEOUT;
5791 /* verify open state */
5792 ctx = nfs_file_open_context(filp);
5795 if (request->fl_start < 0 || request->fl_end < 0)
5798 if (IS_GETLK(cmd)) {
5800 return nfs4_proc_getlk(state, F_GETLK, request);
5804 if (!(IS_SETLK(cmd) || IS_SETLKW(cmd)))
5807 if (request->fl_type == F_UNLCK) {
5809 return nfs4_proc_unlck(state, cmd, request);
5816 * Don't rely on the VFS having checked the file open mode,
5817 * since it won't do this for flock() locks.
5819 switch (request->fl_type) {
5821 if (!(filp->f_mode & FMODE_READ))
5825 if (!(filp->f_mode & FMODE_WRITE))
5830 status = nfs4_proc_setlk(state, cmd, request);
5831 if ((status != -EAGAIN) || IS_SETLK(cmd))
5833 timeout = nfs4_set_lock_task_retry(timeout);
5834 status = -ERESTARTSYS;
5837 } while(status < 0);
5841 int nfs4_lock_delegation_recall(struct file_lock *fl, struct nfs4_state *state, const nfs4_stateid *stateid)
5843 struct nfs_server *server = NFS_SERVER(state->inode);
5846 err = nfs4_set_lock_state(state, fl);
5849 err = _nfs4_do_setlk(state, F_SETLK, fl, NFS_LOCK_NEW);
5850 return nfs4_handle_delegation_recall_error(server, state, stateid, err);
5853 struct nfs_release_lockowner_data {
5854 struct nfs4_lock_state *lsp;
5855 struct nfs_server *server;
5856 struct nfs_release_lockowner_args args;
5857 struct nfs_release_lockowner_res res;
5858 unsigned long timestamp;
5861 static void nfs4_release_lockowner_prepare(struct rpc_task *task, void *calldata)
5863 struct nfs_release_lockowner_data *data = calldata;
5864 nfs40_setup_sequence(data->server,
5865 &data->args.seq_args, &data->res.seq_res, task);
5866 data->timestamp = jiffies;
5869 static void nfs4_release_lockowner_done(struct rpc_task *task, void *calldata)
5871 struct nfs_release_lockowner_data *data = calldata;
5872 struct nfs_server *server = data->server;
5874 nfs40_sequence_done(task, &data->res.seq_res);
5876 switch (task->tk_status) {
5878 renew_lease(server, data->timestamp);
5880 case -NFS4ERR_STALE_CLIENTID:
5881 case -NFS4ERR_EXPIRED:
5882 case -NFS4ERR_LEASE_MOVED:
5883 case -NFS4ERR_DELAY:
5884 if (nfs4_async_handle_error(task, server, NULL) == -EAGAIN)
5885 rpc_restart_call_prepare(task);
5889 static void nfs4_release_lockowner_release(void *calldata)
5891 struct nfs_release_lockowner_data *data = calldata;
5892 nfs4_free_lock_state(data->server, data->lsp);
5896 static const struct rpc_call_ops nfs4_release_lockowner_ops = {
5897 .rpc_call_prepare = nfs4_release_lockowner_prepare,
5898 .rpc_call_done = nfs4_release_lockowner_done,
5899 .rpc_release = nfs4_release_lockowner_release,
5902 static int nfs4_release_lockowner(struct nfs_server *server, struct nfs4_lock_state *lsp)
5904 struct nfs_release_lockowner_data *data;
5905 struct rpc_message msg = {
5906 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RELEASE_LOCKOWNER],
5909 if (server->nfs_client->cl_mvops->minor_version != 0)
5912 data = kmalloc(sizeof(*data), GFP_NOFS);
5916 data->server = server;
5917 data->args.lock_owner.clientid = server->nfs_client->cl_clientid;
5918 data->args.lock_owner.id = lsp->ls_seqid.owner_id;
5919 data->args.lock_owner.s_dev = server->s_dev;
5921 msg.rpc_argp = &data->args;
5922 msg.rpc_resp = &data->res;
5923 nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 0);
5924 rpc_call_async(server->client, &msg, 0, &nfs4_release_lockowner_ops, data);
5928 #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl"
5930 static int nfs4_xattr_set_nfs4_acl(struct dentry *dentry, const char *key,
5931 const void *buf, size_t buflen,
5932 int flags, int type)
5934 if (strcmp(key, "") != 0)
5937 return nfs4_proc_set_acl(dentry->d_inode, buf, buflen);
5940 static int nfs4_xattr_get_nfs4_acl(struct dentry *dentry, const char *key,
5941 void *buf, size_t buflen, int type)
5943 if (strcmp(key, "") != 0)
5946 return nfs4_proc_get_acl(dentry->d_inode, buf, buflen);
5949 static size_t nfs4_xattr_list_nfs4_acl(struct dentry *dentry, char *list,
5950 size_t list_len, const char *name,
5951 size_t name_len, int type)
5953 size_t len = sizeof(XATTR_NAME_NFSV4_ACL);
5955 if (!nfs4_server_supports_acls(NFS_SERVER(dentry->d_inode)))
5958 if (list && len <= list_len)
5959 memcpy(list, XATTR_NAME_NFSV4_ACL, len);
5963 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
5964 static inline int nfs4_server_supports_labels(struct nfs_server *server)
5966 return server->caps & NFS_CAP_SECURITY_LABEL;
5969 static int nfs4_xattr_set_nfs4_label(struct dentry *dentry, const char *key,
5970 const void *buf, size_t buflen,
5971 int flags, int type)
5973 if (security_ismaclabel(key))
5974 return nfs4_set_security_label(dentry, buf, buflen);
5979 static int nfs4_xattr_get_nfs4_label(struct dentry *dentry, const char *key,
5980 void *buf, size_t buflen, int type)
5982 if (security_ismaclabel(key))
5983 return nfs4_get_security_label(dentry->d_inode, buf, buflen);
5987 static size_t nfs4_xattr_list_nfs4_label(struct dentry *dentry, char *list,
5988 size_t list_len, const char *name,
5989 size_t name_len, int type)
5993 if (nfs_server_capable(dentry->d_inode, NFS_CAP_SECURITY_LABEL)) {
5994 len = security_inode_listsecurity(dentry->d_inode, NULL, 0);
5995 if (list && len <= list_len)
5996 security_inode_listsecurity(dentry->d_inode, list, len);
6001 static const struct xattr_handler nfs4_xattr_nfs4_label_handler = {
6002 .prefix = XATTR_SECURITY_PREFIX,
6003 .list = nfs4_xattr_list_nfs4_label,
6004 .get = nfs4_xattr_get_nfs4_label,
6005 .set = nfs4_xattr_set_nfs4_label,
6011 * nfs_fhget will use either the mounted_on_fileid or the fileid
6013 static void nfs_fixup_referral_attributes(struct nfs_fattr *fattr)
6015 if (!(((fattr->valid & NFS_ATTR_FATTR_MOUNTED_ON_FILEID) ||
6016 (fattr->valid & NFS_ATTR_FATTR_FILEID)) &&
6017 (fattr->valid & NFS_ATTR_FATTR_FSID) &&
6018 (fattr->valid & NFS_ATTR_FATTR_V4_LOCATIONS)))
6021 fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE |
6022 NFS_ATTR_FATTR_NLINK | NFS_ATTR_FATTR_V4_REFERRAL;
6023 fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO;
6027 static int _nfs4_proc_fs_locations(struct rpc_clnt *client, struct inode *dir,
6028 const struct qstr *name,
6029 struct nfs4_fs_locations *fs_locations,
6032 struct nfs_server *server = NFS_SERVER(dir);
6034 [0] = FATTR4_WORD0_FSID | FATTR4_WORD0_FS_LOCATIONS,
6036 struct nfs4_fs_locations_arg args = {
6037 .dir_fh = NFS_FH(dir),
6042 struct nfs4_fs_locations_res res = {
6043 .fs_locations = fs_locations,
6045 struct rpc_message msg = {
6046 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FS_LOCATIONS],
6052 dprintk("%s: start\n", __func__);
6054 /* Ask for the fileid of the absent filesystem if mounted_on_fileid
6055 * is not supported */
6056 if (NFS_SERVER(dir)->attr_bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID)
6057 bitmask[1] |= FATTR4_WORD1_MOUNTED_ON_FILEID;
6059 bitmask[0] |= FATTR4_WORD0_FILEID;
6061 nfs_fattr_init(&fs_locations->fattr);
6062 fs_locations->server = server;
6063 fs_locations->nlocations = 0;
6064 status = nfs4_call_sync(client, server, &msg, &args.seq_args, &res.seq_res, 0);
6065 dprintk("%s: returned status = %d\n", __func__, status);
6069 int nfs4_proc_fs_locations(struct rpc_clnt *client, struct inode *dir,
6070 const struct qstr *name,
6071 struct nfs4_fs_locations *fs_locations,
6074 struct nfs4_exception exception = { };
6077 err = _nfs4_proc_fs_locations(client, dir, name,
6078 fs_locations, page);
6079 trace_nfs4_get_fs_locations(dir, name, err);
6080 err = nfs4_handle_exception(NFS_SERVER(dir), err,
6082 } while (exception.retry);
6087 * This operation also signals the server that this client is
6088 * performing migration recovery. The server can stop returning
6089 * NFS4ERR_LEASE_MOVED to this client. A RENEW operation is
6090 * appended to this compound to identify the client ID which is
6091 * performing recovery.
6093 static int _nfs40_proc_get_locations(struct inode *inode,
6094 struct nfs4_fs_locations *locations,
6095 struct page *page, struct rpc_cred *cred)
6097 struct nfs_server *server = NFS_SERVER(inode);
6098 struct rpc_clnt *clnt = server->client;
6100 [0] = FATTR4_WORD0_FSID | FATTR4_WORD0_FS_LOCATIONS,
6102 struct nfs4_fs_locations_arg args = {
6103 .clientid = server->nfs_client->cl_clientid,
6104 .fh = NFS_FH(inode),
6107 .migration = 1, /* skip LOOKUP */
6108 .renew = 1, /* append RENEW */
6110 struct nfs4_fs_locations_res res = {
6111 .fs_locations = locations,
6115 struct rpc_message msg = {
6116 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FS_LOCATIONS],
6121 unsigned long now = jiffies;
6124 nfs_fattr_init(&locations->fattr);
6125 locations->server = server;
6126 locations->nlocations = 0;
6128 nfs4_init_sequence(&args.seq_args, &res.seq_res, 0);
6129 nfs4_set_sequence_privileged(&args.seq_args);
6130 status = nfs4_call_sync_sequence(clnt, server, &msg,
6131 &args.seq_args, &res.seq_res);
6135 renew_lease(server, now);
6139 #ifdef CONFIG_NFS_V4_1
6142 * This operation also signals the server that this client is
6143 * performing migration recovery. The server can stop asserting
6144 * SEQ4_STATUS_LEASE_MOVED for this client. The client ID
6145 * performing this operation is identified in the SEQUENCE
6146 * operation in this compound.
6148 * When the client supports GETATTR(fs_locations_info), it can
6149 * be plumbed in here.
6151 static int _nfs41_proc_get_locations(struct inode *inode,
6152 struct nfs4_fs_locations *locations,
6153 struct page *page, struct rpc_cred *cred)
6155 struct nfs_server *server = NFS_SERVER(inode);
6156 struct rpc_clnt *clnt = server->client;
6158 [0] = FATTR4_WORD0_FSID | FATTR4_WORD0_FS_LOCATIONS,
6160 struct nfs4_fs_locations_arg args = {
6161 .fh = NFS_FH(inode),
6164 .migration = 1, /* skip LOOKUP */
6166 struct nfs4_fs_locations_res res = {
6167 .fs_locations = locations,
6170 struct rpc_message msg = {
6171 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FS_LOCATIONS],
6178 nfs_fattr_init(&locations->fattr);
6179 locations->server = server;
6180 locations->nlocations = 0;
6182 nfs4_init_sequence(&args.seq_args, &res.seq_res, 0);
6183 nfs4_set_sequence_privileged(&args.seq_args);
6184 status = nfs4_call_sync_sequence(clnt, server, &msg,
6185 &args.seq_args, &res.seq_res);
6186 if (status == NFS4_OK &&
6187 res.seq_res.sr_status_flags & SEQ4_STATUS_LEASE_MOVED)
6188 status = -NFS4ERR_LEASE_MOVED;
6192 #endif /* CONFIG_NFS_V4_1 */
6195 * nfs4_proc_get_locations - discover locations for a migrated FSID
6196 * @inode: inode on FSID that is migrating
6197 * @locations: result of query
6199 * @cred: credential to use for this operation
6201 * Returns NFS4_OK on success, a negative NFS4ERR status code if the
6202 * operation failed, or a negative errno if a local error occurred.
6204 * On success, "locations" is filled in, but if the server has
6205 * no locations information, NFS_ATTR_FATTR_V4_LOCATIONS is not
6208 * -NFS4ERR_LEASE_MOVED is returned if the server still has leases
6209 * from this client that require migration recovery.
6211 int nfs4_proc_get_locations(struct inode *inode,
6212 struct nfs4_fs_locations *locations,
6213 struct page *page, struct rpc_cred *cred)
6215 struct nfs_server *server = NFS_SERVER(inode);
6216 struct nfs_client *clp = server->nfs_client;
6217 const struct nfs4_mig_recovery_ops *ops =
6218 clp->cl_mvops->mig_recovery_ops;
6219 struct nfs4_exception exception = { };
6222 dprintk("%s: FSID %llx:%llx on \"%s\"\n", __func__,
6223 (unsigned long long)server->fsid.major,
6224 (unsigned long long)server->fsid.minor,
6226 nfs_display_fhandle(NFS_FH(inode), __func__);
6229 status = ops->get_locations(inode, locations, page, cred);
6230 if (status != -NFS4ERR_DELAY)
6232 nfs4_handle_exception(server, status, &exception);
6233 } while (exception.retry);
6238 * This operation also signals the server that this client is
6239 * performing "lease moved" recovery. The server can stop
6240 * returning NFS4ERR_LEASE_MOVED to this client. A RENEW operation
6241 * is appended to this compound to identify the client ID which is
6242 * performing recovery.
6244 static int _nfs40_proc_fsid_present(struct inode *inode, struct rpc_cred *cred)
6246 struct nfs_server *server = NFS_SERVER(inode);
6247 struct nfs_client *clp = NFS_SERVER(inode)->nfs_client;
6248 struct rpc_clnt *clnt = server->client;
6249 struct nfs4_fsid_present_arg args = {
6250 .fh = NFS_FH(inode),
6251 .clientid = clp->cl_clientid,
6252 .renew = 1, /* append RENEW */
6254 struct nfs4_fsid_present_res res = {
6257 struct rpc_message msg = {
6258 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FSID_PRESENT],
6263 unsigned long now = jiffies;
6266 res.fh = nfs_alloc_fhandle();
6270 nfs4_init_sequence(&args.seq_args, &res.seq_res, 0);
6271 nfs4_set_sequence_privileged(&args.seq_args);
6272 status = nfs4_call_sync_sequence(clnt, server, &msg,
6273 &args.seq_args, &res.seq_res);
6274 nfs_free_fhandle(res.fh);
6278 do_renew_lease(clp, now);
6282 #ifdef CONFIG_NFS_V4_1
6285 * This operation also signals the server that this client is
6286 * performing "lease moved" recovery. The server can stop asserting
6287 * SEQ4_STATUS_LEASE_MOVED for this client. The client ID performing
6288 * this operation is identified in the SEQUENCE operation in this
6291 static int _nfs41_proc_fsid_present(struct inode *inode, struct rpc_cred *cred)
6293 struct nfs_server *server = NFS_SERVER(inode);
6294 struct rpc_clnt *clnt = server->client;
6295 struct nfs4_fsid_present_arg args = {
6296 .fh = NFS_FH(inode),
6298 struct nfs4_fsid_present_res res = {
6300 struct rpc_message msg = {
6301 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FSID_PRESENT],
6308 res.fh = nfs_alloc_fhandle();
6312 nfs4_init_sequence(&args.seq_args, &res.seq_res, 0);
6313 nfs4_set_sequence_privileged(&args.seq_args);
6314 status = nfs4_call_sync_sequence(clnt, server, &msg,
6315 &args.seq_args, &res.seq_res);
6316 nfs_free_fhandle(res.fh);
6317 if (status == NFS4_OK &&
6318 res.seq_res.sr_status_flags & SEQ4_STATUS_LEASE_MOVED)
6319 status = -NFS4ERR_LEASE_MOVED;
6323 #endif /* CONFIG_NFS_V4_1 */
6326 * nfs4_proc_fsid_present - Is this FSID present or absent on server?
6327 * @inode: inode on FSID to check
6328 * @cred: credential to use for this operation
6330 * Server indicates whether the FSID is present, moved, or not
6331 * recognized. This operation is necessary to clear a LEASE_MOVED
6332 * condition for this client ID.
6334 * Returns NFS4_OK if the FSID is present on this server,
6335 * -NFS4ERR_MOVED if the FSID is no longer present, a negative
6336 * NFS4ERR code if some error occurred on the server, or a
6337 * negative errno if a local failure occurred.
6339 int nfs4_proc_fsid_present(struct inode *inode, struct rpc_cred *cred)
6341 struct nfs_server *server = NFS_SERVER(inode);
6342 struct nfs_client *clp = server->nfs_client;
6343 const struct nfs4_mig_recovery_ops *ops =
6344 clp->cl_mvops->mig_recovery_ops;
6345 struct nfs4_exception exception = { };
6348 dprintk("%s: FSID %llx:%llx on \"%s\"\n", __func__,
6349 (unsigned long long)server->fsid.major,
6350 (unsigned long long)server->fsid.minor,
6352 nfs_display_fhandle(NFS_FH(inode), __func__);
6355 status = ops->fsid_present(inode, cred);
6356 if (status != -NFS4ERR_DELAY)
6358 nfs4_handle_exception(server, status, &exception);
6359 } while (exception.retry);
6364 * If 'use_integrity' is true and the state managment nfs_client
6365 * cl_rpcclient is using krb5i/p, use the integrity protected cl_rpcclient
6366 * and the machine credential as per RFC3530bis and RFC5661 Security
6367 * Considerations sections. Otherwise, just use the user cred with the
6368 * filesystem's rpc_client.
6370 static int _nfs4_proc_secinfo(struct inode *dir, const struct qstr *name, struct nfs4_secinfo_flavors *flavors, bool use_integrity)
6373 struct nfs4_secinfo_arg args = {
6374 .dir_fh = NFS_FH(dir),
6377 struct nfs4_secinfo_res res = {
6380 struct rpc_message msg = {
6381 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SECINFO],
6385 struct rpc_clnt *clnt = NFS_SERVER(dir)->client;
6386 struct rpc_cred *cred = NULL;
6388 if (use_integrity) {
6389 clnt = NFS_SERVER(dir)->nfs_client->cl_rpcclient;
6390 cred = nfs4_get_clid_cred(NFS_SERVER(dir)->nfs_client);
6391 msg.rpc_cred = cred;
6394 dprintk("NFS call secinfo %s\n", name->name);
6396 nfs4_state_protect(NFS_SERVER(dir)->nfs_client,
6397 NFS_SP4_MACH_CRED_SECINFO, &clnt, &msg);
6399 status = nfs4_call_sync(clnt, NFS_SERVER(dir), &msg, &args.seq_args,
6401 dprintk("NFS reply secinfo: %d\n", status);
6409 int nfs4_proc_secinfo(struct inode *dir, const struct qstr *name,
6410 struct nfs4_secinfo_flavors *flavors)
6412 struct nfs4_exception exception = { };
6415 err = -NFS4ERR_WRONGSEC;
6417 /* try to use integrity protection with machine cred */
6418 if (_nfs4_is_integrity_protected(NFS_SERVER(dir)->nfs_client))
6419 err = _nfs4_proc_secinfo(dir, name, flavors, true);
6422 * if unable to use integrity protection, or SECINFO with
6423 * integrity protection returns NFS4ERR_WRONGSEC (which is
6424 * disallowed by spec, but exists in deployed servers) use
6425 * the current filesystem's rpc_client and the user cred.
6427 if (err == -NFS4ERR_WRONGSEC)
6428 err = _nfs4_proc_secinfo(dir, name, flavors, false);
6430 trace_nfs4_secinfo(dir, name, err);
6431 err = nfs4_handle_exception(NFS_SERVER(dir), err,
6433 } while (exception.retry);
6437 #ifdef CONFIG_NFS_V4_1
6439 * Check the exchange flags returned by the server for invalid flags, having
6440 * both PNFS and NON_PNFS flags set, and not having one of NON_PNFS, PNFS, or
6443 static int nfs4_check_cl_exchange_flags(u32 flags)
6445 if (flags & ~EXCHGID4_FLAG_MASK_R)
6447 if ((flags & EXCHGID4_FLAG_USE_PNFS_MDS) &&
6448 (flags & EXCHGID4_FLAG_USE_NON_PNFS))
6450 if (!(flags & (EXCHGID4_FLAG_MASK_PNFS)))
6454 return -NFS4ERR_INVAL;
6458 nfs41_same_server_scope(struct nfs41_server_scope *a,
6459 struct nfs41_server_scope *b)
6461 if (a->server_scope_sz == b->server_scope_sz &&
6462 memcmp(a->server_scope, b->server_scope, a->server_scope_sz) == 0)
6469 * nfs4_proc_bind_conn_to_session()
6471 * The 4.1 client currently uses the same TCP connection for the
6472 * fore and backchannel.
6474 int nfs4_proc_bind_conn_to_session(struct nfs_client *clp, struct rpc_cred *cred)
6477 struct nfs41_bind_conn_to_session_res res;
6478 struct rpc_message msg = {
6480 &nfs4_procedures[NFSPROC4_CLNT_BIND_CONN_TO_SESSION],
6486 dprintk("--> %s\n", __func__);
6488 res.session = kzalloc(sizeof(struct nfs4_session), GFP_NOFS);
6489 if (unlikely(res.session == NULL)) {
6494 status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT);
6495 trace_nfs4_bind_conn_to_session(clp, status);
6497 if (memcmp(res.session->sess_id.data,
6498 clp->cl_session->sess_id.data, NFS4_MAX_SESSIONID_LEN)) {
6499 dprintk("NFS: %s: Session ID mismatch\n", __func__);
6503 if (res.dir != NFS4_CDFS4_BOTH) {
6504 dprintk("NFS: %s: Unexpected direction from server\n",
6509 if (res.use_conn_in_rdma_mode) {
6510 dprintk("NFS: %s: Server returned RDMA mode = true\n",
6519 dprintk("<-- %s status= %d\n", __func__, status);
6524 * Minimum set of SP4_MACH_CRED operations from RFC 5661 in the enforce map
6525 * and operations we'd like to see to enable certain features in the allow map
6527 static const struct nfs41_state_protection nfs4_sp4_mach_cred_request = {
6528 .how = SP4_MACH_CRED,
6529 .enforce.u.words = {
6530 [1] = 1 << (OP_BIND_CONN_TO_SESSION - 32) |
6531 1 << (OP_EXCHANGE_ID - 32) |
6532 1 << (OP_CREATE_SESSION - 32) |
6533 1 << (OP_DESTROY_SESSION - 32) |
6534 1 << (OP_DESTROY_CLIENTID - 32)
6537 [0] = 1 << (OP_CLOSE) |
6540 [1] = 1 << (OP_SECINFO - 32) |
6541 1 << (OP_SECINFO_NO_NAME - 32) |
6542 1 << (OP_TEST_STATEID - 32) |
6543 1 << (OP_FREE_STATEID - 32) |
6544 1 << (OP_WRITE - 32)
6549 * Select the state protection mode for client `clp' given the server results
6550 * from exchange_id in `sp'.
6552 * Returns 0 on success, negative errno otherwise.
6554 static int nfs4_sp4_select_mode(struct nfs_client *clp,
6555 struct nfs41_state_protection *sp)
6557 static const u32 supported_enforce[NFS4_OP_MAP_NUM_WORDS] = {
6558 [1] = 1 << (OP_BIND_CONN_TO_SESSION - 32) |
6559 1 << (OP_EXCHANGE_ID - 32) |
6560 1 << (OP_CREATE_SESSION - 32) |
6561 1 << (OP_DESTROY_SESSION - 32) |
6562 1 << (OP_DESTROY_CLIENTID - 32)
6566 if (sp->how == SP4_MACH_CRED) {
6567 /* Print state protect result */
6568 dfprintk(MOUNT, "Server SP4_MACH_CRED support:\n");
6569 for (i = 0; i <= LAST_NFS4_OP; i++) {
6570 if (test_bit(i, sp->enforce.u.longs))
6571 dfprintk(MOUNT, " enforce op %d\n", i);
6572 if (test_bit(i, sp->allow.u.longs))
6573 dfprintk(MOUNT, " allow op %d\n", i);
6576 /* make sure nothing is on enforce list that isn't supported */
6577 for (i = 0; i < NFS4_OP_MAP_NUM_WORDS; i++) {
6578 if (sp->enforce.u.words[i] & ~supported_enforce[i]) {
6579 dfprintk(MOUNT, "sp4_mach_cred: disabled\n");
6585 * Minimal mode - state operations are allowed to use machine
6586 * credential. Note this already happens by default, so the
6587 * client doesn't have to do anything more than the negotiation.
6589 * NOTE: we don't care if EXCHANGE_ID is in the list -
6590 * we're already using the machine cred for exchange_id
6591 * and will never use a different cred.
6593 if (test_bit(OP_BIND_CONN_TO_SESSION, sp->enforce.u.longs) &&
6594 test_bit(OP_CREATE_SESSION, sp->enforce.u.longs) &&
6595 test_bit(OP_DESTROY_SESSION, sp->enforce.u.longs) &&
6596 test_bit(OP_DESTROY_CLIENTID, sp->enforce.u.longs)) {
6597 dfprintk(MOUNT, "sp4_mach_cred:\n");
6598 dfprintk(MOUNT, " minimal mode enabled\n");
6599 set_bit(NFS_SP4_MACH_CRED_MINIMAL, &clp->cl_sp4_flags);
6601 dfprintk(MOUNT, "sp4_mach_cred: disabled\n");
6605 if (test_bit(OP_CLOSE, sp->allow.u.longs) &&
6606 test_bit(OP_LOCKU, sp->allow.u.longs)) {
6607 dfprintk(MOUNT, " cleanup mode enabled\n");
6608 set_bit(NFS_SP4_MACH_CRED_CLEANUP, &clp->cl_sp4_flags);
6611 if (test_bit(OP_SECINFO, sp->allow.u.longs) &&
6612 test_bit(OP_SECINFO_NO_NAME, sp->allow.u.longs)) {
6613 dfprintk(MOUNT, " secinfo mode enabled\n");
6614 set_bit(NFS_SP4_MACH_CRED_SECINFO, &clp->cl_sp4_flags);
6617 if (test_bit(OP_TEST_STATEID, sp->allow.u.longs) &&
6618 test_bit(OP_FREE_STATEID, sp->allow.u.longs)) {
6619 dfprintk(MOUNT, " stateid mode enabled\n");
6620 set_bit(NFS_SP4_MACH_CRED_STATEID, &clp->cl_sp4_flags);
6623 if (test_bit(OP_WRITE, sp->allow.u.longs)) {
6624 dfprintk(MOUNT, " write mode enabled\n");
6625 set_bit(NFS_SP4_MACH_CRED_WRITE, &clp->cl_sp4_flags);
6628 if (test_bit(OP_COMMIT, sp->allow.u.longs)) {
6629 dfprintk(MOUNT, " commit mode enabled\n");
6630 set_bit(NFS_SP4_MACH_CRED_COMMIT, &clp->cl_sp4_flags);
6638 * _nfs4_proc_exchange_id()
6640 * Wrapper for EXCHANGE_ID operation.
6642 static int _nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred,
6645 nfs4_verifier verifier;
6646 struct nfs41_exchange_id_args args = {
6647 .verifier = &verifier,
6649 #ifdef CONFIG_NFS_V4_1_MIGRATION
6650 .flags = EXCHGID4_FLAG_SUPP_MOVED_REFER |
6651 EXCHGID4_FLAG_BIND_PRINC_STATEID |
6652 EXCHGID4_FLAG_SUPP_MOVED_MIGR,
6654 .flags = EXCHGID4_FLAG_SUPP_MOVED_REFER |
6655 EXCHGID4_FLAG_BIND_PRINC_STATEID,
6658 struct nfs41_exchange_id_res res = {
6662 struct rpc_message msg = {
6663 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_EXCHANGE_ID],
6669 nfs4_init_boot_verifier(clp, &verifier);
6670 args.id_len = nfs4_init_uniform_client_string(clp, args.id,
6672 dprintk("NFS call exchange_id auth=%s, '%.*s'\n",
6673 clp->cl_rpcclient->cl_auth->au_ops->au_name,
6674 args.id_len, args.id);
6676 res.server_owner = kzalloc(sizeof(struct nfs41_server_owner),
6678 if (unlikely(res.server_owner == NULL)) {
6683 res.server_scope = kzalloc(sizeof(struct nfs41_server_scope),
6685 if (unlikely(res.server_scope == NULL)) {
6687 goto out_server_owner;
6690 res.impl_id = kzalloc(sizeof(struct nfs41_impl_id), GFP_NOFS);
6691 if (unlikely(res.impl_id == NULL)) {
6693 goto out_server_scope;
6698 args.state_protect.how = SP4_NONE;
6702 args.state_protect = nfs4_sp4_mach_cred_request;
6709 goto out_server_scope;
6712 status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT);
6713 trace_nfs4_exchange_id(clp, status);
6715 status = nfs4_check_cl_exchange_flags(res.flags);
6718 status = nfs4_sp4_select_mode(clp, &res.state_protect);
6721 clp->cl_clientid = res.clientid;
6722 clp->cl_exchange_flags = (res.flags & ~EXCHGID4_FLAG_CONFIRMED_R);
6723 if (!(res.flags & EXCHGID4_FLAG_CONFIRMED_R))
6724 clp->cl_seqid = res.seqid;
6726 kfree(clp->cl_serverowner);
6727 clp->cl_serverowner = res.server_owner;
6728 res.server_owner = NULL;
6730 /* use the most recent implementation id */
6731 kfree(clp->cl_implid);
6732 clp->cl_implid = res.impl_id;
6734 if (clp->cl_serverscope != NULL &&
6735 !nfs41_same_server_scope(clp->cl_serverscope,
6736 res.server_scope)) {
6737 dprintk("%s: server_scope mismatch detected\n",
6739 set_bit(NFS4CLNT_SERVER_SCOPE_MISMATCH, &clp->cl_state);
6740 kfree(clp->cl_serverscope);
6741 clp->cl_serverscope = NULL;
6744 if (clp->cl_serverscope == NULL) {
6745 clp->cl_serverscope = res.server_scope;
6752 kfree(res.server_owner);
6754 kfree(res.server_scope);
6756 if (clp->cl_implid != NULL)
6757 dprintk("NFS reply exchange_id: Server Implementation ID: "
6758 "domain: %s, name: %s, date: %llu,%u\n",
6759 clp->cl_implid->domain, clp->cl_implid->name,
6760 clp->cl_implid->date.seconds,
6761 clp->cl_implid->date.nseconds);
6762 dprintk("NFS reply exchange_id: %d\n", status);
6767 * nfs4_proc_exchange_id()
6769 * Returns zero, a negative errno, or a negative NFS4ERR status code.
6771 * Since the clientid has expired, all compounds using sessions
6772 * associated with the stale clientid will be returning
6773 * NFS4ERR_BADSESSION in the sequence operation, and will therefore
6774 * be in some phase of session reset.
6776 * Will attempt to negotiate SP4_MACH_CRED if krb5i / krb5p auth is used.
6778 int nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred)
6780 rpc_authflavor_t authflavor = clp->cl_rpcclient->cl_auth->au_flavor;
6783 /* try SP4_MACH_CRED if krb5i/p */
6784 if (authflavor == RPC_AUTH_GSS_KRB5I ||
6785 authflavor == RPC_AUTH_GSS_KRB5P) {
6786 status = _nfs4_proc_exchange_id(clp, cred, SP4_MACH_CRED);
6792 return _nfs4_proc_exchange_id(clp, cred, SP4_NONE);
6795 static int _nfs4_proc_destroy_clientid(struct nfs_client *clp,
6796 struct rpc_cred *cred)
6798 struct rpc_message msg = {
6799 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DESTROY_CLIENTID],
6805 status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT);
6806 trace_nfs4_destroy_clientid(clp, status);
6808 dprintk("NFS: Got error %d from the server %s on "
6809 "DESTROY_CLIENTID.", status, clp->cl_hostname);
6813 static int nfs4_proc_destroy_clientid(struct nfs_client *clp,
6814 struct rpc_cred *cred)
6819 for (loop = NFS4_MAX_LOOP_ON_RECOVER; loop != 0; loop--) {
6820 ret = _nfs4_proc_destroy_clientid(clp, cred);
6822 case -NFS4ERR_DELAY:
6823 case -NFS4ERR_CLIENTID_BUSY:
6833 int nfs4_destroy_clientid(struct nfs_client *clp)
6835 struct rpc_cred *cred;
6838 if (clp->cl_mvops->minor_version < 1)
6840 if (clp->cl_exchange_flags == 0)
6842 if (clp->cl_preserve_clid)
6844 cred = nfs4_get_clid_cred(clp);
6845 ret = nfs4_proc_destroy_clientid(clp, cred);
6850 case -NFS4ERR_STALE_CLIENTID:
6851 clp->cl_exchange_flags = 0;
6857 struct nfs4_get_lease_time_data {
6858 struct nfs4_get_lease_time_args *args;
6859 struct nfs4_get_lease_time_res *res;
6860 struct nfs_client *clp;
6863 static void nfs4_get_lease_time_prepare(struct rpc_task *task,
6866 struct nfs4_get_lease_time_data *data =
6867 (struct nfs4_get_lease_time_data *)calldata;
6869 dprintk("--> %s\n", __func__);
6870 /* just setup sequence, do not trigger session recovery
6871 since we're invoked within one */
6872 nfs41_setup_sequence(data->clp->cl_session,
6873 &data->args->la_seq_args,
6874 &data->res->lr_seq_res,
6876 dprintk("<-- %s\n", __func__);
6880 * Called from nfs4_state_manager thread for session setup, so don't recover
6881 * from sequence operation or clientid errors.
6883 static void nfs4_get_lease_time_done(struct rpc_task *task, void *calldata)
6885 struct nfs4_get_lease_time_data *data =
6886 (struct nfs4_get_lease_time_data *)calldata;
6888 dprintk("--> %s\n", __func__);
6889 if (!nfs41_sequence_done(task, &data->res->lr_seq_res))
6891 switch (task->tk_status) {
6892 case -NFS4ERR_DELAY:
6893 case -NFS4ERR_GRACE:
6894 dprintk("%s Retry: tk_status %d\n", __func__, task->tk_status);
6895 rpc_delay(task, NFS4_POLL_RETRY_MIN);
6896 task->tk_status = 0;
6898 case -NFS4ERR_RETRY_UNCACHED_REP:
6899 rpc_restart_call_prepare(task);
6902 dprintk("<-- %s\n", __func__);
6905 static const struct rpc_call_ops nfs4_get_lease_time_ops = {
6906 .rpc_call_prepare = nfs4_get_lease_time_prepare,
6907 .rpc_call_done = nfs4_get_lease_time_done,
6910 int nfs4_proc_get_lease_time(struct nfs_client *clp, struct nfs_fsinfo *fsinfo)
6912 struct rpc_task *task;
6913 struct nfs4_get_lease_time_args args;
6914 struct nfs4_get_lease_time_res res = {
6915 .lr_fsinfo = fsinfo,
6917 struct nfs4_get_lease_time_data data = {
6922 struct rpc_message msg = {
6923 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GET_LEASE_TIME],
6927 struct rpc_task_setup task_setup = {
6928 .rpc_client = clp->cl_rpcclient,
6929 .rpc_message = &msg,
6930 .callback_ops = &nfs4_get_lease_time_ops,
6931 .callback_data = &data,
6932 .flags = RPC_TASK_TIMEOUT,
6936 nfs4_init_sequence(&args.la_seq_args, &res.lr_seq_res, 0);
6937 nfs4_set_sequence_privileged(&args.la_seq_args);
6938 dprintk("--> %s\n", __func__);
6939 task = rpc_run_task(&task_setup);
6942 status = PTR_ERR(task);
6944 status = task->tk_status;
6947 dprintk("<-- %s return %d\n", __func__, status);
6953 * Initialize the values to be used by the client in CREATE_SESSION
6954 * If nfs4_init_session set the fore channel request and response sizes,
6957 * Set the back channel max_resp_sz_cached to zero to force the client to
6958 * always set csa_cachethis to FALSE because the current implementation
6959 * of the back channel DRC only supports caching the CB_SEQUENCE operation.
6961 static void nfs4_init_channel_attrs(struct nfs41_create_session_args *args)
6963 unsigned int max_rqst_sz, max_resp_sz;
6965 max_rqst_sz = NFS_MAX_FILE_IO_SIZE + nfs41_maxwrite_overhead;
6966 max_resp_sz = NFS_MAX_FILE_IO_SIZE + nfs41_maxread_overhead;
6968 /* Fore channel attributes */
6969 args->fc_attrs.max_rqst_sz = max_rqst_sz;
6970 args->fc_attrs.max_resp_sz = max_resp_sz;
6971 args->fc_attrs.max_ops = NFS4_MAX_OPS;
6972 args->fc_attrs.max_reqs = max_session_slots;
6974 dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u "
6975 "max_ops=%u max_reqs=%u\n",
6977 args->fc_attrs.max_rqst_sz, args->fc_attrs.max_resp_sz,
6978 args->fc_attrs.max_ops, args->fc_attrs.max_reqs);
6980 /* Back channel attributes */
6981 args->bc_attrs.max_rqst_sz = PAGE_SIZE;
6982 args->bc_attrs.max_resp_sz = PAGE_SIZE;
6983 args->bc_attrs.max_resp_sz_cached = 0;
6984 args->bc_attrs.max_ops = NFS4_MAX_BACK_CHANNEL_OPS;
6985 args->bc_attrs.max_reqs = 1;
6987 dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u "
6988 "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n",
6990 args->bc_attrs.max_rqst_sz, args->bc_attrs.max_resp_sz,
6991 args->bc_attrs.max_resp_sz_cached, args->bc_attrs.max_ops,
6992 args->bc_attrs.max_reqs);
6995 static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args *args, struct nfs4_session *session)
6997 struct nfs4_channel_attrs *sent = &args->fc_attrs;
6998 struct nfs4_channel_attrs *rcvd = &session->fc_attrs;
7000 if (rcvd->max_resp_sz > sent->max_resp_sz)
7003 * Our requested max_ops is the minimum we need; we're not
7004 * prepared to break up compounds into smaller pieces than that.
7005 * So, no point even trying to continue if the server won't
7008 if (rcvd->max_ops < sent->max_ops)
7010 if (rcvd->max_reqs == 0)
7012 if (rcvd->max_reqs > NFS4_MAX_SLOT_TABLE)
7013 rcvd->max_reqs = NFS4_MAX_SLOT_TABLE;
7017 static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args *args, struct nfs4_session *session)
7019 struct nfs4_channel_attrs *sent = &args->bc_attrs;
7020 struct nfs4_channel_attrs *rcvd = &session->bc_attrs;
7022 if (rcvd->max_rqst_sz > sent->max_rqst_sz)
7024 if (rcvd->max_resp_sz < sent->max_resp_sz)
7026 if (rcvd->max_resp_sz_cached > sent->max_resp_sz_cached)
7028 /* These would render the backchannel useless: */
7029 if (rcvd->max_ops != sent->max_ops)
7031 if (rcvd->max_reqs != sent->max_reqs)
7036 static int nfs4_verify_channel_attrs(struct nfs41_create_session_args *args,
7037 struct nfs4_session *session)
7041 ret = nfs4_verify_fore_channel_attrs(args, session);
7044 return nfs4_verify_back_channel_attrs(args, session);
7047 static int _nfs4_proc_create_session(struct nfs_client *clp,
7048 struct rpc_cred *cred)
7050 struct nfs4_session *session = clp->cl_session;
7051 struct nfs41_create_session_args args = {
7053 .cb_program = NFS4_CALLBACK,
7055 struct nfs41_create_session_res res = {
7058 struct rpc_message msg = {
7059 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE_SESSION],
7066 nfs4_init_channel_attrs(&args);
7067 args.flags = (SESSION4_PERSIST | SESSION4_BACK_CHAN);
7069 status = rpc_call_sync(session->clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT);
7070 trace_nfs4_create_session(clp, status);
7073 /* Verify the session's negotiated channel_attrs values */
7074 status = nfs4_verify_channel_attrs(&args, session);
7075 /* Increment the clientid slot sequence id */
7083 * Issues a CREATE_SESSION operation to the server.
7084 * It is the responsibility of the caller to verify the session is
7085 * expired before calling this routine.
7087 int nfs4_proc_create_session(struct nfs_client *clp, struct rpc_cred *cred)
7091 struct nfs4_session *session = clp->cl_session;
7093 dprintk("--> %s clp=%p session=%p\n", __func__, clp, session);
7095 status = _nfs4_proc_create_session(clp, cred);
7099 /* Init or reset the session slot tables */
7100 status = nfs4_setup_session_slot_tables(session);
7101 dprintk("slot table setup returned %d\n", status);
7105 ptr = (unsigned *)&session->sess_id.data[0];
7106 dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__,
7107 clp->cl_seqid, ptr[0], ptr[1], ptr[2], ptr[3]);
7109 dprintk("<-- %s\n", __func__);
7114 * Issue the over-the-wire RPC DESTROY_SESSION.
7115 * The caller must serialize access to this routine.
7117 int nfs4_proc_destroy_session(struct nfs4_session *session,
7118 struct rpc_cred *cred)
7120 struct rpc_message msg = {
7121 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DESTROY_SESSION],
7122 .rpc_argp = session,
7127 dprintk("--> nfs4_proc_destroy_session\n");
7129 /* session is still being setup */
7130 if (session->clp->cl_cons_state != NFS_CS_READY)
7133 status = rpc_call_sync(session->clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT);
7134 trace_nfs4_destroy_session(session->clp, status);
7137 dprintk("NFS: Got error %d from the server on DESTROY_SESSION. "
7138 "Session has been destroyed regardless...\n", status);
7140 dprintk("<-- nfs4_proc_destroy_session\n");
7145 * Renew the cl_session lease.
7147 struct nfs4_sequence_data {
7148 struct nfs_client *clp;
7149 struct nfs4_sequence_args args;
7150 struct nfs4_sequence_res res;
7153 static void nfs41_sequence_release(void *data)
7155 struct nfs4_sequence_data *calldata = data;
7156 struct nfs_client *clp = calldata->clp;
7158 if (atomic_read(&clp->cl_count) > 1)
7159 nfs4_schedule_state_renewal(clp);
7160 nfs_put_client(clp);
7164 static int nfs41_sequence_handle_errors(struct rpc_task *task, struct nfs_client *clp)
7166 switch(task->tk_status) {
7167 case -NFS4ERR_DELAY:
7168 rpc_delay(task, NFS4_POLL_RETRY_MAX);
7171 nfs4_schedule_lease_recovery(clp);
7176 static void nfs41_sequence_call_done(struct rpc_task *task, void *data)
7178 struct nfs4_sequence_data *calldata = data;
7179 struct nfs_client *clp = calldata->clp;
7181 if (!nfs41_sequence_done(task, task->tk_msg.rpc_resp))
7184 trace_nfs4_sequence(clp, task->tk_status);
7185 if (task->tk_status < 0) {
7186 dprintk("%s ERROR %d\n", __func__, task->tk_status);
7187 if (atomic_read(&clp->cl_count) == 1)
7190 if (nfs41_sequence_handle_errors(task, clp) == -EAGAIN) {
7191 rpc_restart_call_prepare(task);
7195 dprintk("%s rpc_cred %p\n", __func__, task->tk_msg.rpc_cred);
7197 dprintk("<-- %s\n", __func__);
7200 static void nfs41_sequence_prepare(struct rpc_task *task, void *data)
7202 struct nfs4_sequence_data *calldata = data;
7203 struct nfs_client *clp = calldata->clp;
7204 struct nfs4_sequence_args *args;
7205 struct nfs4_sequence_res *res;
7207 args = task->tk_msg.rpc_argp;
7208 res = task->tk_msg.rpc_resp;
7210 nfs41_setup_sequence(clp->cl_session, args, res, task);
7213 static const struct rpc_call_ops nfs41_sequence_ops = {
7214 .rpc_call_done = nfs41_sequence_call_done,
7215 .rpc_call_prepare = nfs41_sequence_prepare,
7216 .rpc_release = nfs41_sequence_release,
7219 static struct rpc_task *_nfs41_proc_sequence(struct nfs_client *clp,
7220 struct rpc_cred *cred,
7223 struct nfs4_sequence_data *calldata;
7224 struct rpc_message msg = {
7225 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SEQUENCE],
7228 struct rpc_task_setup task_setup_data = {
7229 .rpc_client = clp->cl_rpcclient,
7230 .rpc_message = &msg,
7231 .callback_ops = &nfs41_sequence_ops,
7232 .flags = RPC_TASK_ASYNC | RPC_TASK_TIMEOUT,
7235 if (!atomic_inc_not_zero(&clp->cl_count))
7236 return ERR_PTR(-EIO);
7237 calldata = kzalloc(sizeof(*calldata), GFP_NOFS);
7238 if (calldata == NULL) {
7239 nfs_put_client(clp);
7240 return ERR_PTR(-ENOMEM);
7242 nfs4_init_sequence(&calldata->args, &calldata->res, 0);
7244 nfs4_set_sequence_privileged(&calldata->args);
7245 msg.rpc_argp = &calldata->args;
7246 msg.rpc_resp = &calldata->res;
7247 calldata->clp = clp;
7248 task_setup_data.callback_data = calldata;
7250 return rpc_run_task(&task_setup_data);
7253 static int nfs41_proc_async_sequence(struct nfs_client *clp, struct rpc_cred *cred, unsigned renew_flags)
7255 struct rpc_task *task;
7258 if ((renew_flags & NFS4_RENEW_TIMEOUT) == 0)
7260 task = _nfs41_proc_sequence(clp, cred, false);
7262 ret = PTR_ERR(task);
7264 rpc_put_task_async(task);
7265 dprintk("<-- %s status=%d\n", __func__, ret);
7269 static int nfs4_proc_sequence(struct nfs_client *clp, struct rpc_cred *cred)
7271 struct rpc_task *task;
7274 task = _nfs41_proc_sequence(clp, cred, true);
7276 ret = PTR_ERR(task);
7279 ret = rpc_wait_for_completion_task(task);
7281 struct nfs4_sequence_res *res = task->tk_msg.rpc_resp;
7283 if (task->tk_status == 0)
7284 nfs41_handle_sequence_flag_errors(clp, res->sr_status_flags);
7285 ret = task->tk_status;
7289 dprintk("<-- %s status=%d\n", __func__, ret);
7293 struct nfs4_reclaim_complete_data {
7294 struct nfs_client *clp;
7295 struct nfs41_reclaim_complete_args arg;
7296 struct nfs41_reclaim_complete_res res;
7299 static void nfs4_reclaim_complete_prepare(struct rpc_task *task, void *data)
7301 struct nfs4_reclaim_complete_data *calldata = data;
7303 nfs41_setup_sequence(calldata->clp->cl_session,
7304 &calldata->arg.seq_args,
7305 &calldata->res.seq_res,
7309 static int nfs41_reclaim_complete_handle_errors(struct rpc_task *task, struct nfs_client *clp)
7311 switch(task->tk_status) {
7313 case -NFS4ERR_COMPLETE_ALREADY:
7314 case -NFS4ERR_WRONG_CRED: /* What to do here? */
7316 case -NFS4ERR_DELAY:
7317 rpc_delay(task, NFS4_POLL_RETRY_MAX);
7319 case -NFS4ERR_RETRY_UNCACHED_REP:
7322 nfs4_schedule_lease_recovery(clp);
7327 static void nfs4_reclaim_complete_done(struct rpc_task *task, void *data)
7329 struct nfs4_reclaim_complete_data *calldata = data;
7330 struct nfs_client *clp = calldata->clp;
7331 struct nfs4_sequence_res *res = &calldata->res.seq_res;
7333 dprintk("--> %s\n", __func__);
7334 if (!nfs41_sequence_done(task, res))
7337 trace_nfs4_reclaim_complete(clp, task->tk_status);
7338 if (nfs41_reclaim_complete_handle_errors(task, clp) == -EAGAIN) {
7339 rpc_restart_call_prepare(task);
7342 dprintk("<-- %s\n", __func__);
7345 static void nfs4_free_reclaim_complete_data(void *data)
7347 struct nfs4_reclaim_complete_data *calldata = data;
7352 static const struct rpc_call_ops nfs4_reclaim_complete_call_ops = {
7353 .rpc_call_prepare = nfs4_reclaim_complete_prepare,
7354 .rpc_call_done = nfs4_reclaim_complete_done,
7355 .rpc_release = nfs4_free_reclaim_complete_data,
7359 * Issue a global reclaim complete.
7361 static int nfs41_proc_reclaim_complete(struct nfs_client *clp,
7362 struct rpc_cred *cred)
7364 struct nfs4_reclaim_complete_data *calldata;
7365 struct rpc_task *task;
7366 struct rpc_message msg = {
7367 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RECLAIM_COMPLETE],
7370 struct rpc_task_setup task_setup_data = {
7371 .rpc_client = clp->cl_rpcclient,
7372 .rpc_message = &msg,
7373 .callback_ops = &nfs4_reclaim_complete_call_ops,
7374 .flags = RPC_TASK_ASYNC,
7376 int status = -ENOMEM;
7378 dprintk("--> %s\n", __func__);
7379 calldata = kzalloc(sizeof(*calldata), GFP_NOFS);
7380 if (calldata == NULL)
7382 calldata->clp = clp;
7383 calldata->arg.one_fs = 0;
7385 nfs4_init_sequence(&calldata->arg.seq_args, &calldata->res.seq_res, 0);
7386 nfs4_set_sequence_privileged(&calldata->arg.seq_args);
7387 msg.rpc_argp = &calldata->arg;
7388 msg.rpc_resp = &calldata->res;
7389 task_setup_data.callback_data = calldata;
7390 task = rpc_run_task(&task_setup_data);
7392 status = PTR_ERR(task);
7395 status = nfs4_wait_for_completion_rpc_task(task);
7397 status = task->tk_status;
7401 dprintk("<-- %s status=%d\n", __func__, status);
7406 nfs4_layoutget_prepare(struct rpc_task *task, void *calldata)
7408 struct nfs4_layoutget *lgp = calldata;
7409 struct nfs_server *server = NFS_SERVER(lgp->args.inode);
7410 struct nfs4_session *session = nfs4_get_session(server);
7412 dprintk("--> %s\n", __func__);
7413 /* Note the is a race here, where a CB_LAYOUTRECALL can come in
7414 * right now covering the LAYOUTGET we are about to send.
7415 * However, that is not so catastrophic, and there seems
7416 * to be no way to prevent it completely.
7418 if (nfs41_setup_sequence(session, &lgp->args.seq_args,
7419 &lgp->res.seq_res, task))
7421 if (pnfs_choose_layoutget_stateid(&lgp->args.stateid,
7422 NFS_I(lgp->args.inode)->layout,
7423 lgp->args.ctx->state)) {
7424 rpc_exit(task, NFS4_OK);
7428 static void nfs4_layoutget_done(struct rpc_task *task, void *calldata)
7430 struct nfs4_layoutget *lgp = calldata;
7431 struct inode *inode = lgp->args.inode;
7432 struct nfs_server *server = NFS_SERVER(inode);
7433 struct pnfs_layout_hdr *lo;
7434 struct nfs4_state *state = NULL;
7435 unsigned long timeo, now, giveup;
7437 dprintk("--> %s tk_status => %d\n", __func__, -task->tk_status);
7439 if (!nfs41_sequence_done(task, &lgp->res.seq_res))
7442 switch (task->tk_status) {
7446 * NFS4ERR_LAYOUTTRYLATER is a conflict with another client
7447 * (or clients) writing to the same RAID stripe
7449 case -NFS4ERR_LAYOUTTRYLATER:
7451 * NFS4ERR_RECALLCONFLICT is when conflict with self (must recall
7452 * existing layout before getting a new one).
7454 case -NFS4ERR_RECALLCONFLICT:
7455 timeo = rpc_get_timeout(task->tk_client);
7456 giveup = lgp->args.timestamp + timeo;
7458 if (time_after(giveup, now)) {
7459 unsigned long delay;
7462 * - Not less then NFS4_POLL_RETRY_MIN.
7463 * - One last time a jiffie before we give up
7464 * - exponential backoff (time_now minus start_attempt)
7466 delay = max_t(unsigned long, NFS4_POLL_RETRY_MIN,
7467 min((giveup - now - 1),
7468 now - lgp->args.timestamp));
7470 dprintk("%s: NFS4ERR_RECALLCONFLICT waiting %lu\n",
7472 rpc_delay(task, delay);
7473 task->tk_status = 0;
7474 rpc_restart_call_prepare(task);
7475 goto out; /* Do not call nfs4_async_handle_error() */
7478 case -NFS4ERR_EXPIRED:
7479 case -NFS4ERR_BAD_STATEID:
7480 spin_lock(&inode->i_lock);
7481 lo = NFS_I(inode)->layout;
7482 if (!lo || list_empty(&lo->plh_segs)) {
7483 spin_unlock(&inode->i_lock);
7484 /* If the open stateid was bad, then recover it. */
7485 state = lgp->args.ctx->state;
7489 pnfs_mark_matching_lsegs_invalid(lo, &head, NULL);
7490 spin_unlock(&inode->i_lock);
7491 /* Mark the bad layout state as invalid, then
7492 * retry using the open stateid. */
7493 pnfs_free_lseg_list(&head);
7496 if (nfs4_async_handle_error(task, server, state) == -EAGAIN)
7497 rpc_restart_call_prepare(task);
7499 dprintk("<-- %s\n", __func__);
7502 static size_t max_response_pages(struct nfs_server *server)
7504 u32 max_resp_sz = server->nfs_client->cl_session->fc_attrs.max_resp_sz;
7505 return nfs_page_array_len(0, max_resp_sz);
7508 static void nfs4_free_pages(struct page **pages, size_t size)
7515 for (i = 0; i < size; i++) {
7518 __free_page(pages[i]);
7523 static struct page **nfs4_alloc_pages(size_t size, gfp_t gfp_flags)
7525 struct page **pages;
7528 pages = kcalloc(size, sizeof(struct page *), gfp_flags);
7530 dprintk("%s: can't alloc array of %zu pages\n", __func__, size);
7534 for (i = 0; i < size; i++) {
7535 pages[i] = alloc_page(gfp_flags);
7537 dprintk("%s: failed to allocate page\n", __func__);
7538 nfs4_free_pages(pages, size);
7546 static void nfs4_layoutget_release(void *calldata)
7548 struct nfs4_layoutget *lgp = calldata;
7549 struct inode *inode = lgp->args.inode;
7550 struct nfs_server *server = NFS_SERVER(inode);
7551 size_t max_pages = max_response_pages(server);
7553 dprintk("--> %s\n", __func__);
7554 nfs4_free_pages(lgp->args.layout.pages, max_pages);
7555 pnfs_put_layout_hdr(NFS_I(inode)->layout);
7556 put_nfs_open_context(lgp->args.ctx);
7558 dprintk("<-- %s\n", __func__);
7561 static const struct rpc_call_ops nfs4_layoutget_call_ops = {
7562 .rpc_call_prepare = nfs4_layoutget_prepare,
7563 .rpc_call_done = nfs4_layoutget_done,
7564 .rpc_release = nfs4_layoutget_release,
7567 struct pnfs_layout_segment *
7568 nfs4_proc_layoutget(struct nfs4_layoutget *lgp, gfp_t gfp_flags)
7570 struct inode *inode = lgp->args.inode;
7571 struct nfs_server *server = NFS_SERVER(inode);
7572 size_t max_pages = max_response_pages(server);
7573 struct rpc_task *task;
7574 struct rpc_message msg = {
7575 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTGET],
7576 .rpc_argp = &lgp->args,
7577 .rpc_resp = &lgp->res,
7578 .rpc_cred = lgp->cred,
7580 struct rpc_task_setup task_setup_data = {
7581 .rpc_client = server->client,
7582 .rpc_message = &msg,
7583 .callback_ops = &nfs4_layoutget_call_ops,
7584 .callback_data = lgp,
7585 .flags = RPC_TASK_ASYNC,
7587 struct pnfs_layout_segment *lseg = NULL;
7590 dprintk("--> %s\n", __func__);
7592 lgp->args.layout.pages = nfs4_alloc_pages(max_pages, gfp_flags);
7593 if (!lgp->args.layout.pages) {
7594 nfs4_layoutget_release(lgp);
7595 return ERR_PTR(-ENOMEM);
7597 lgp->args.layout.pglen = max_pages * PAGE_SIZE;
7598 lgp->args.timestamp = jiffies;
7600 lgp->res.layoutp = &lgp->args.layout;
7601 lgp->res.seq_res.sr_slot = NULL;
7602 nfs4_init_sequence(&lgp->args.seq_args, &lgp->res.seq_res, 0);
7604 /* nfs4_layoutget_release calls pnfs_put_layout_hdr */
7605 pnfs_get_layout_hdr(NFS_I(inode)->layout);
7607 task = rpc_run_task(&task_setup_data);
7609 return ERR_CAST(task);
7610 status = nfs4_wait_for_completion_rpc_task(task);
7612 status = task->tk_status;
7613 trace_nfs4_layoutget(lgp->args.ctx,
7617 /* if layoutp->len is 0, nfs4_layoutget_prepare called rpc_exit */
7618 if (status == 0 && lgp->res.layoutp->len)
7619 lseg = pnfs_layout_process(lgp);
7621 dprintk("<-- %s status=%d\n", __func__, status);
7623 return ERR_PTR(status);
7628 nfs4_layoutreturn_prepare(struct rpc_task *task, void *calldata)
7630 struct nfs4_layoutreturn *lrp = calldata;
7632 dprintk("--> %s\n", __func__);
7633 nfs41_setup_sequence(lrp->clp->cl_session,
7634 &lrp->args.seq_args,
7639 static void nfs4_layoutreturn_done(struct rpc_task *task, void *calldata)
7641 struct nfs4_layoutreturn *lrp = calldata;
7642 struct nfs_server *server;
7644 dprintk("--> %s\n", __func__);
7646 if (!nfs41_sequence_done(task, &lrp->res.seq_res))
7649 server = NFS_SERVER(lrp->args.inode);
7650 switch (task->tk_status) {
7652 task->tk_status = 0;
7655 case -NFS4ERR_DELAY:
7656 if (nfs4_async_handle_error(task, server, NULL) != -EAGAIN)
7658 rpc_restart_call_prepare(task);
7661 dprintk("<-- %s\n", __func__);
7664 static void nfs4_layoutreturn_release(void *calldata)
7666 struct nfs4_layoutreturn *lrp = calldata;
7667 struct pnfs_layout_hdr *lo = lrp->args.layout;
7669 dprintk("--> %s\n", __func__);
7670 spin_lock(&lo->plh_inode->i_lock);
7671 if (lrp->res.lrs_present)
7672 pnfs_set_layout_stateid(lo, &lrp->res.stateid, true);
7673 lo->plh_block_lgets--;
7674 spin_unlock(&lo->plh_inode->i_lock);
7675 pnfs_put_layout_hdr(lrp->args.layout);
7677 dprintk("<-- %s\n", __func__);
7680 static const struct rpc_call_ops nfs4_layoutreturn_call_ops = {
7681 .rpc_call_prepare = nfs4_layoutreturn_prepare,
7682 .rpc_call_done = nfs4_layoutreturn_done,
7683 .rpc_release = nfs4_layoutreturn_release,
7686 int nfs4_proc_layoutreturn(struct nfs4_layoutreturn *lrp)
7688 struct rpc_task *task;
7689 struct rpc_message msg = {
7690 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTRETURN],
7691 .rpc_argp = &lrp->args,
7692 .rpc_resp = &lrp->res,
7693 .rpc_cred = lrp->cred,
7695 struct rpc_task_setup task_setup_data = {
7696 .rpc_client = NFS_SERVER(lrp->args.inode)->client,
7697 .rpc_message = &msg,
7698 .callback_ops = &nfs4_layoutreturn_call_ops,
7699 .callback_data = lrp,
7703 dprintk("--> %s\n", __func__);
7704 nfs4_init_sequence(&lrp->args.seq_args, &lrp->res.seq_res, 1);
7705 task = rpc_run_task(&task_setup_data);
7707 return PTR_ERR(task);
7708 status = task->tk_status;
7709 trace_nfs4_layoutreturn(lrp->args.inode, status);
7710 dprintk("<-- %s status=%d\n", __func__, status);
7716 * Retrieve the list of Data Server devices from the MDS.
7718 static int _nfs4_getdevicelist(struct nfs_server *server,
7719 const struct nfs_fh *fh,
7720 struct pnfs_devicelist *devlist)
7722 struct nfs4_getdevicelist_args args = {
7724 .layoutclass = server->pnfs_curr_ld->id,
7726 struct nfs4_getdevicelist_res res = {
7729 struct rpc_message msg = {
7730 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETDEVICELIST],
7736 dprintk("--> %s\n", __func__);
7737 status = nfs4_call_sync(server->client, server, &msg, &args.seq_args,
7739 dprintk("<-- %s status=%d\n", __func__, status);
7743 int nfs4_proc_getdevicelist(struct nfs_server *server,
7744 const struct nfs_fh *fh,
7745 struct pnfs_devicelist *devlist)
7747 struct nfs4_exception exception = { };
7751 err = nfs4_handle_exception(server,
7752 _nfs4_getdevicelist(server, fh, devlist),
7754 } while (exception.retry);
7756 dprintk("%s: err=%d, num_devs=%u\n", __func__,
7757 err, devlist->num_devs);
7761 EXPORT_SYMBOL_GPL(nfs4_proc_getdevicelist);
7764 _nfs4_proc_getdeviceinfo(struct nfs_server *server,
7765 struct pnfs_device *pdev,
7766 struct rpc_cred *cred)
7768 struct nfs4_getdeviceinfo_args args = {
7771 struct nfs4_getdeviceinfo_res res = {
7774 struct rpc_message msg = {
7775 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETDEVICEINFO],
7782 dprintk("--> %s\n", __func__);
7783 status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0);
7784 dprintk("<-- %s status=%d\n", __func__, status);
7789 int nfs4_proc_getdeviceinfo(struct nfs_server *server,
7790 struct pnfs_device *pdev,
7791 struct rpc_cred *cred)
7793 struct nfs4_exception exception = { };
7797 err = nfs4_handle_exception(server,
7798 _nfs4_proc_getdeviceinfo(server, pdev, cred),
7800 } while (exception.retry);
7803 EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo);
7805 static void nfs4_layoutcommit_prepare(struct rpc_task *task, void *calldata)
7807 struct nfs4_layoutcommit_data *data = calldata;
7808 struct nfs_server *server = NFS_SERVER(data->args.inode);
7809 struct nfs4_session *session = nfs4_get_session(server);
7811 nfs41_setup_sequence(session,
7812 &data->args.seq_args,
7818 nfs4_layoutcommit_done(struct rpc_task *task, void *calldata)
7820 struct nfs4_layoutcommit_data *data = calldata;
7821 struct nfs_server *server = NFS_SERVER(data->args.inode);
7823 if (!nfs41_sequence_done(task, &data->res.seq_res))
7826 switch (task->tk_status) { /* Just ignore these failures */
7827 case -NFS4ERR_DELEG_REVOKED: /* layout was recalled */
7828 case -NFS4ERR_BADIOMODE: /* no IOMODE_RW layout for range */
7829 case -NFS4ERR_BADLAYOUT: /* no layout */
7830 case -NFS4ERR_GRACE: /* loca_recalim always false */
7831 task->tk_status = 0;
7835 if (nfs4_async_handle_error(task, server, NULL) == -EAGAIN) {
7836 rpc_restart_call_prepare(task);
7842 static void nfs4_layoutcommit_release(void *calldata)
7844 struct nfs4_layoutcommit_data *data = calldata;
7846 pnfs_cleanup_layoutcommit(data);
7847 nfs_post_op_update_inode_force_wcc(data->args.inode,
7849 put_rpccred(data->cred);
7853 static const struct rpc_call_ops nfs4_layoutcommit_ops = {
7854 .rpc_call_prepare = nfs4_layoutcommit_prepare,
7855 .rpc_call_done = nfs4_layoutcommit_done,
7856 .rpc_release = nfs4_layoutcommit_release,
7860 nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data *data, bool sync)
7862 struct rpc_message msg = {
7863 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTCOMMIT],
7864 .rpc_argp = &data->args,
7865 .rpc_resp = &data->res,
7866 .rpc_cred = data->cred,
7868 struct rpc_task_setup task_setup_data = {
7869 .task = &data->task,
7870 .rpc_client = NFS_CLIENT(data->args.inode),
7871 .rpc_message = &msg,
7872 .callback_ops = &nfs4_layoutcommit_ops,
7873 .callback_data = data,
7874 .flags = RPC_TASK_ASYNC,
7876 struct rpc_task *task;
7879 dprintk("NFS: %4d initiating layoutcommit call. sync %d "
7880 "lbw: %llu inode %lu\n",
7881 data->task.tk_pid, sync,
7882 data->args.lastbytewritten,
7883 data->args.inode->i_ino);
7885 nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 1);
7886 task = rpc_run_task(&task_setup_data);
7888 return PTR_ERR(task);
7891 status = nfs4_wait_for_completion_rpc_task(task);
7894 status = task->tk_status;
7895 trace_nfs4_layoutcommit(data->args.inode, status);
7897 dprintk("%s: status %d\n", __func__, status);
7903 * Use the state managment nfs_client cl_rpcclient, which uses krb5i (if
7904 * possible) as per RFC3530bis and RFC5661 Security Considerations sections
7907 _nfs41_proc_secinfo_no_name(struct nfs_server *server, struct nfs_fh *fhandle,
7908 struct nfs_fsinfo *info,
7909 struct nfs4_secinfo_flavors *flavors, bool use_integrity)
7911 struct nfs41_secinfo_no_name_args args = {
7912 .style = SECINFO_STYLE_CURRENT_FH,
7914 struct nfs4_secinfo_res res = {
7917 struct rpc_message msg = {
7918 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SECINFO_NO_NAME],
7922 struct rpc_clnt *clnt = server->client;
7923 struct rpc_cred *cred = NULL;
7926 if (use_integrity) {
7927 clnt = server->nfs_client->cl_rpcclient;
7928 cred = nfs4_get_clid_cred(server->nfs_client);
7929 msg.rpc_cred = cred;
7932 dprintk("--> %s\n", __func__);
7933 status = nfs4_call_sync(clnt, server, &msg, &args.seq_args,
7935 dprintk("<-- %s status=%d\n", __func__, status);
7944 nfs41_proc_secinfo_no_name(struct nfs_server *server, struct nfs_fh *fhandle,
7945 struct nfs_fsinfo *info, struct nfs4_secinfo_flavors *flavors)
7947 struct nfs4_exception exception = { };
7950 /* first try using integrity protection */
7951 err = -NFS4ERR_WRONGSEC;
7953 /* try to use integrity protection with machine cred */
7954 if (_nfs4_is_integrity_protected(server->nfs_client))
7955 err = _nfs41_proc_secinfo_no_name(server, fhandle, info,
7959 * if unable to use integrity protection, or SECINFO with
7960 * integrity protection returns NFS4ERR_WRONGSEC (which is
7961 * disallowed by spec, but exists in deployed servers) use
7962 * the current filesystem's rpc_client and the user cred.
7964 if (err == -NFS4ERR_WRONGSEC)
7965 err = _nfs41_proc_secinfo_no_name(server, fhandle, info,
7970 case -NFS4ERR_WRONGSEC:
7974 err = nfs4_handle_exception(server, err, &exception);
7976 } while (exception.retry);
7982 nfs41_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle,
7983 struct nfs_fsinfo *info)
7987 rpc_authflavor_t flavor = RPC_AUTH_MAXFLAVOR;
7988 struct nfs4_secinfo_flavors *flavors;
7989 struct nfs4_secinfo4 *secinfo;
7992 page = alloc_page(GFP_KERNEL);
7998 flavors = page_address(page);
7999 err = nfs41_proc_secinfo_no_name(server, fhandle, info, flavors);
8002 * Fall back on "guess and check" method if
8003 * the server doesn't support SECINFO_NO_NAME
8005 if (err == -NFS4ERR_WRONGSEC || err == -ENOTSUPP) {
8006 err = nfs4_find_root_sec(server, fhandle, info);
8012 for (i = 0; i < flavors->num_flavors; i++) {
8013 secinfo = &flavors->flavors[i];
8015 switch (secinfo->flavor) {
8019 flavor = rpcauth_get_pseudoflavor(secinfo->flavor,
8020 &secinfo->flavor_info);
8023 flavor = RPC_AUTH_MAXFLAVOR;
8027 if (!nfs_auth_info_match(&server->auth_info, flavor))
8028 flavor = RPC_AUTH_MAXFLAVOR;
8030 if (flavor != RPC_AUTH_MAXFLAVOR) {
8031 err = nfs4_lookup_root_sec(server, fhandle,
8038 if (flavor == RPC_AUTH_MAXFLAVOR)
8049 static int _nfs41_test_stateid(struct nfs_server *server,
8050 nfs4_stateid *stateid,
8051 struct rpc_cred *cred)
8054 struct nfs41_test_stateid_args args = {
8057 struct nfs41_test_stateid_res res;
8058 struct rpc_message msg = {
8059 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_TEST_STATEID],
8064 struct rpc_clnt *rpc_client = server->client;
8066 nfs4_state_protect(server->nfs_client, NFS_SP4_MACH_CRED_STATEID,
8069 dprintk("NFS call test_stateid %p\n", stateid);
8070 nfs4_init_sequence(&args.seq_args, &res.seq_res, 0);
8071 nfs4_set_sequence_privileged(&args.seq_args);
8072 status = nfs4_call_sync_sequence(rpc_client, server, &msg,
8073 &args.seq_args, &res.seq_res);
8074 if (status != NFS_OK) {
8075 dprintk("NFS reply test_stateid: failed, %d\n", status);
8078 dprintk("NFS reply test_stateid: succeeded, %d\n", -res.status);
8083 * nfs41_test_stateid - perform a TEST_STATEID operation
8085 * @server: server / transport on which to perform the operation
8086 * @stateid: state ID to test
8089 * Returns NFS_OK if the server recognizes that "stateid" is valid.
8090 * Otherwise a negative NFS4ERR value is returned if the operation
8091 * failed or the state ID is not currently valid.
8093 static int nfs41_test_stateid(struct nfs_server *server,
8094 nfs4_stateid *stateid,
8095 struct rpc_cred *cred)
8097 struct nfs4_exception exception = { };
8100 err = _nfs41_test_stateid(server, stateid, cred);
8101 if (err != -NFS4ERR_DELAY)
8103 nfs4_handle_exception(server, err, &exception);
8104 } while (exception.retry);
8108 struct nfs_free_stateid_data {
8109 struct nfs_server *server;
8110 struct nfs41_free_stateid_args args;
8111 struct nfs41_free_stateid_res res;
8114 static void nfs41_free_stateid_prepare(struct rpc_task *task, void *calldata)
8116 struct nfs_free_stateid_data *data = calldata;
8117 nfs41_setup_sequence(nfs4_get_session(data->server),
8118 &data->args.seq_args,
8123 static void nfs41_free_stateid_done(struct rpc_task *task, void *calldata)
8125 struct nfs_free_stateid_data *data = calldata;
8127 nfs41_sequence_done(task, &data->res.seq_res);
8129 switch (task->tk_status) {
8130 case -NFS4ERR_DELAY:
8131 if (nfs4_async_handle_error(task, data->server, NULL) == -EAGAIN)
8132 rpc_restart_call_prepare(task);
8136 static void nfs41_free_stateid_release(void *calldata)
8141 static const struct rpc_call_ops nfs41_free_stateid_ops = {
8142 .rpc_call_prepare = nfs41_free_stateid_prepare,
8143 .rpc_call_done = nfs41_free_stateid_done,
8144 .rpc_release = nfs41_free_stateid_release,
8147 static struct rpc_task *_nfs41_free_stateid(struct nfs_server *server,
8148 nfs4_stateid *stateid,
8149 struct rpc_cred *cred,
8152 struct rpc_message msg = {
8153 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FREE_STATEID],
8156 struct rpc_task_setup task_setup = {
8157 .rpc_client = server->client,
8158 .rpc_message = &msg,
8159 .callback_ops = &nfs41_free_stateid_ops,
8160 .flags = RPC_TASK_ASYNC,
8162 struct nfs_free_stateid_data *data;
8164 nfs4_state_protect(server->nfs_client, NFS_SP4_MACH_CRED_STATEID,
8165 &task_setup.rpc_client, &msg);
8167 dprintk("NFS call free_stateid %p\n", stateid);
8168 data = kmalloc(sizeof(*data), GFP_NOFS);
8170 return ERR_PTR(-ENOMEM);
8171 data->server = server;
8172 nfs4_stateid_copy(&data->args.stateid, stateid);
8174 task_setup.callback_data = data;
8176 msg.rpc_argp = &data->args;
8177 msg.rpc_resp = &data->res;
8178 nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 0);
8180 nfs4_set_sequence_privileged(&data->args.seq_args);
8182 return rpc_run_task(&task_setup);
8186 * nfs41_free_stateid - perform a FREE_STATEID operation
8188 * @server: server / transport on which to perform the operation
8189 * @stateid: state ID to release
8192 * Returns NFS_OK if the server freed "stateid". Otherwise a
8193 * negative NFS4ERR value is returned.
8195 static int nfs41_free_stateid(struct nfs_server *server,
8196 nfs4_stateid *stateid,
8197 struct rpc_cred *cred)
8199 struct rpc_task *task;
8202 task = _nfs41_free_stateid(server, stateid, cred, true);
8204 return PTR_ERR(task);
8205 ret = rpc_wait_for_completion_task(task);
8207 ret = task->tk_status;
8212 static int nfs41_free_lock_state(struct nfs_server *server, struct nfs4_lock_state *lsp)
8214 struct rpc_task *task;
8215 struct rpc_cred *cred = lsp->ls_state->owner->so_cred;
8217 task = _nfs41_free_stateid(server, &lsp->ls_stateid, cred, false);
8218 nfs4_free_lock_state(server, lsp);
8220 return PTR_ERR(task);
8225 static bool nfs41_match_stateid(const nfs4_stateid *s1,
8226 const nfs4_stateid *s2)
8228 if (memcmp(s1->other, s2->other, sizeof(s1->other)) != 0)
8231 if (s1->seqid == s2->seqid)
8233 if (s1->seqid == 0 || s2->seqid == 0)
8239 #endif /* CONFIG_NFS_V4_1 */
8241 static bool nfs4_match_stateid(const nfs4_stateid *s1,
8242 const nfs4_stateid *s2)
8244 return nfs4_stateid_match(s1, s2);
8248 static const struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops = {
8249 .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT,
8250 .state_flag_bit = NFS_STATE_RECLAIM_REBOOT,
8251 .recover_open = nfs4_open_reclaim,
8252 .recover_lock = nfs4_lock_reclaim,
8253 .establish_clid = nfs4_init_clientid,
8254 .detect_trunking = nfs40_discover_server_trunking,
8257 #if defined(CONFIG_NFS_V4_1)
8258 static const struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops = {
8259 .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT,
8260 .state_flag_bit = NFS_STATE_RECLAIM_REBOOT,
8261 .recover_open = nfs4_open_reclaim,
8262 .recover_lock = nfs4_lock_reclaim,
8263 .establish_clid = nfs41_init_clientid,
8264 .reclaim_complete = nfs41_proc_reclaim_complete,
8265 .detect_trunking = nfs41_discover_server_trunking,
8267 #endif /* CONFIG_NFS_V4_1 */
8269 static const struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops = {
8270 .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE,
8271 .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE,
8272 .recover_open = nfs40_open_expired,
8273 .recover_lock = nfs4_lock_expired,
8274 .establish_clid = nfs4_init_clientid,
8277 #if defined(CONFIG_NFS_V4_1)
8278 static const struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops = {
8279 .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE,
8280 .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE,
8281 .recover_open = nfs41_open_expired,
8282 .recover_lock = nfs41_lock_expired,
8283 .establish_clid = nfs41_init_clientid,
8285 #endif /* CONFIG_NFS_V4_1 */
8287 static const struct nfs4_state_maintenance_ops nfs40_state_renewal_ops = {
8288 .sched_state_renewal = nfs4_proc_async_renew,
8289 .get_state_renewal_cred_locked = nfs4_get_renew_cred_locked,
8290 .renew_lease = nfs4_proc_renew,
8293 #if defined(CONFIG_NFS_V4_1)
8294 static const struct nfs4_state_maintenance_ops nfs41_state_renewal_ops = {
8295 .sched_state_renewal = nfs41_proc_async_sequence,
8296 .get_state_renewal_cred_locked = nfs4_get_machine_cred_locked,
8297 .renew_lease = nfs4_proc_sequence,
8301 static const struct nfs4_mig_recovery_ops nfs40_mig_recovery_ops = {
8302 .get_locations = _nfs40_proc_get_locations,
8303 .fsid_present = _nfs40_proc_fsid_present,
8306 #if defined(CONFIG_NFS_V4_1)
8307 static const struct nfs4_mig_recovery_ops nfs41_mig_recovery_ops = {
8308 .get_locations = _nfs41_proc_get_locations,
8309 .fsid_present = _nfs41_proc_fsid_present,
8311 #endif /* CONFIG_NFS_V4_1 */
8313 static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops = {
8315 .init_caps = NFS_CAP_READDIRPLUS
8316 | NFS_CAP_ATOMIC_OPEN
8317 | NFS_CAP_CHANGE_ATTR
8318 | NFS_CAP_POSIX_LOCK,
8319 .init_client = nfs40_init_client,
8320 .shutdown_client = nfs40_shutdown_client,
8321 .match_stateid = nfs4_match_stateid,
8322 .find_root_sec = nfs4_find_root_sec,
8323 .free_lock_state = nfs4_release_lockowner,
8324 .call_sync_ops = &nfs40_call_sync_ops,
8325 .reboot_recovery_ops = &nfs40_reboot_recovery_ops,
8326 .nograce_recovery_ops = &nfs40_nograce_recovery_ops,
8327 .state_renewal_ops = &nfs40_state_renewal_ops,
8328 .mig_recovery_ops = &nfs40_mig_recovery_ops,
8331 #if defined(CONFIG_NFS_V4_1)
8332 static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops = {
8334 .init_caps = NFS_CAP_READDIRPLUS
8335 | NFS_CAP_ATOMIC_OPEN
8336 | NFS_CAP_CHANGE_ATTR
8337 | NFS_CAP_POSIX_LOCK
8338 | NFS_CAP_STATEID_NFSV41
8339 | NFS_CAP_ATOMIC_OPEN_V1,
8340 .init_client = nfs41_init_client,
8341 .shutdown_client = nfs41_shutdown_client,
8342 .match_stateid = nfs41_match_stateid,
8343 .find_root_sec = nfs41_find_root_sec,
8344 .free_lock_state = nfs41_free_lock_state,
8345 .call_sync_ops = &nfs41_call_sync_ops,
8346 .reboot_recovery_ops = &nfs41_reboot_recovery_ops,
8347 .nograce_recovery_ops = &nfs41_nograce_recovery_ops,
8348 .state_renewal_ops = &nfs41_state_renewal_ops,
8349 .mig_recovery_ops = &nfs41_mig_recovery_ops,
8353 #if defined(CONFIG_NFS_V4_2)
8354 static const struct nfs4_minor_version_ops nfs_v4_2_minor_ops = {
8356 .init_caps = NFS_CAP_READDIRPLUS
8357 | NFS_CAP_ATOMIC_OPEN
8358 | NFS_CAP_CHANGE_ATTR
8359 | NFS_CAP_POSIX_LOCK
8360 | NFS_CAP_STATEID_NFSV41
8361 | NFS_CAP_ATOMIC_OPEN_V1,
8362 .init_client = nfs41_init_client,
8363 .shutdown_client = nfs41_shutdown_client,
8364 .match_stateid = nfs41_match_stateid,
8365 .find_root_sec = nfs41_find_root_sec,
8366 .free_lock_state = nfs41_free_lock_state,
8367 .call_sync_ops = &nfs41_call_sync_ops,
8368 .reboot_recovery_ops = &nfs41_reboot_recovery_ops,
8369 .nograce_recovery_ops = &nfs41_nograce_recovery_ops,
8370 .state_renewal_ops = &nfs41_state_renewal_ops,
8374 const struct nfs4_minor_version_ops *nfs_v4_minor_ops[] = {
8375 [0] = &nfs_v4_0_minor_ops,
8376 #if defined(CONFIG_NFS_V4_1)
8377 [1] = &nfs_v4_1_minor_ops,
8379 #if defined(CONFIG_NFS_V4_2)
8380 [2] = &nfs_v4_2_minor_ops,
8384 static const struct inode_operations nfs4_dir_inode_operations = {
8385 .create = nfs_create,
8386 .lookup = nfs_lookup,
8387 .atomic_open = nfs_atomic_open,
8389 .unlink = nfs_unlink,
8390 .symlink = nfs_symlink,
8394 .rename = nfs_rename,
8395 .permission = nfs_permission,
8396 .getattr = nfs_getattr,
8397 .setattr = nfs_setattr,
8398 .getxattr = generic_getxattr,
8399 .setxattr = generic_setxattr,
8400 .listxattr = generic_listxattr,
8401 .removexattr = generic_removexattr,
8404 static const struct inode_operations nfs4_file_inode_operations = {
8405 .permission = nfs_permission,
8406 .getattr = nfs_getattr,
8407 .setattr = nfs_setattr,
8408 .getxattr = generic_getxattr,
8409 .setxattr = generic_setxattr,
8410 .listxattr = generic_listxattr,
8411 .removexattr = generic_removexattr,
8414 const struct nfs_rpc_ops nfs_v4_clientops = {
8415 .version = 4, /* protocol version */
8416 .dentry_ops = &nfs4_dentry_operations,
8417 .dir_inode_ops = &nfs4_dir_inode_operations,
8418 .file_inode_ops = &nfs4_file_inode_operations,
8419 .file_ops = &nfs4_file_operations,
8420 .getroot = nfs4_proc_get_root,
8421 .submount = nfs4_submount,
8422 .try_mount = nfs4_try_mount,
8423 .getattr = nfs4_proc_getattr,
8424 .setattr = nfs4_proc_setattr,
8425 .lookup = nfs4_proc_lookup,
8426 .access = nfs4_proc_access,
8427 .readlink = nfs4_proc_readlink,
8428 .create = nfs4_proc_create,
8429 .remove = nfs4_proc_remove,
8430 .unlink_setup = nfs4_proc_unlink_setup,
8431 .unlink_rpc_prepare = nfs4_proc_unlink_rpc_prepare,
8432 .unlink_done = nfs4_proc_unlink_done,
8433 .rename = nfs4_proc_rename,
8434 .rename_setup = nfs4_proc_rename_setup,
8435 .rename_rpc_prepare = nfs4_proc_rename_rpc_prepare,
8436 .rename_done = nfs4_proc_rename_done,
8437 .link = nfs4_proc_link,
8438 .symlink = nfs4_proc_symlink,
8439 .mkdir = nfs4_proc_mkdir,
8440 .rmdir = nfs4_proc_remove,
8441 .readdir = nfs4_proc_readdir,
8442 .mknod = nfs4_proc_mknod,
8443 .statfs = nfs4_proc_statfs,
8444 .fsinfo = nfs4_proc_fsinfo,
8445 .pathconf = nfs4_proc_pathconf,
8446 .set_capabilities = nfs4_server_capabilities,
8447 .decode_dirent = nfs4_decode_dirent,
8448 .read_setup = nfs4_proc_read_setup,
8449 .read_pageio_init = pnfs_pageio_init_read,
8450 .read_rpc_prepare = nfs4_proc_read_rpc_prepare,
8451 .read_done = nfs4_read_done,
8452 .write_setup = nfs4_proc_write_setup,
8453 .write_pageio_init = pnfs_pageio_init_write,
8454 .write_rpc_prepare = nfs4_proc_write_rpc_prepare,
8455 .write_done = nfs4_write_done,
8456 .commit_setup = nfs4_proc_commit_setup,
8457 .commit_rpc_prepare = nfs4_proc_commit_rpc_prepare,
8458 .commit_done = nfs4_commit_done,
8459 .lock = nfs4_proc_lock,
8460 .clear_acl_cache = nfs4_zap_acl_attr,
8461 .close_context = nfs4_close_context,
8462 .open_context = nfs4_atomic_open,
8463 .have_delegation = nfs4_have_delegation,
8464 .return_delegation = nfs4_inode_return_delegation,
8465 .alloc_client = nfs4_alloc_client,
8466 .init_client = nfs4_init_client,
8467 .free_client = nfs4_free_client,
8468 .create_server = nfs4_create_server,
8469 .clone_server = nfs_clone_server,
8472 static const struct xattr_handler nfs4_xattr_nfs4_acl_handler = {
8473 .prefix = XATTR_NAME_NFSV4_ACL,
8474 .list = nfs4_xattr_list_nfs4_acl,
8475 .get = nfs4_xattr_get_nfs4_acl,
8476 .set = nfs4_xattr_set_nfs4_acl,
8479 const struct xattr_handler *nfs4_xattr_handlers[] = {
8480 &nfs4_xattr_nfs4_acl_handler,
8481 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
8482 &nfs4_xattr_nfs4_label_handler,