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/slab.h>
43 #include <linux/sunrpc/clnt.h>
44 #include <linux/nfs.h>
45 #include <linux/nfs4.h>
46 #include <linux/nfs_fs.h>
47 #include <linux/nfs_page.h>
48 #include <linux/namei.h>
49 #include <linux/mount.h>
50 #include <linux/module.h>
51 #include <linux/sunrpc/bc_xprt.h>
54 #include "delegation.h"
59 #define NFSDBG_FACILITY NFSDBG_PROC
61 #define NFS4_POLL_RETRY_MIN (HZ/10)
62 #define NFS4_POLL_RETRY_MAX (15*HZ)
64 #define NFS4_MAX_LOOP_ON_RECOVER (10)
67 static int _nfs4_proc_open(struct nfs4_opendata *data);
68 static int _nfs4_recover_proc_open(struct nfs4_opendata *data);
69 static int nfs4_do_fsinfo(struct nfs_server *, struct nfs_fh *, struct nfs_fsinfo *);
70 static int nfs4_async_handle_error(struct rpc_task *, const struct nfs_server *, struct nfs4_state *);
71 static int _nfs4_proc_lookup(struct inode *dir, const struct qstr *name, struct nfs_fh *fhandle, struct nfs_fattr *fattr);
72 static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr);
73 static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred,
74 struct nfs_fattr *fattr, struct iattr *sattr,
75 struct nfs4_state *state);
77 /* Prevent leaks of NFSv4 errors into userland */
78 static int nfs4_map_errors(int err)
83 case -NFS4ERR_RESOURCE:
86 dprintk("%s could not handle NFSv4 error %d\n",
94 * This is our standard bitmap for GETATTR requests.
96 const u32 nfs4_fattr_bitmap[2] = {
101 | FATTR4_WORD0_FILEID,
103 | FATTR4_WORD1_NUMLINKS
105 | FATTR4_WORD1_OWNER_GROUP
106 | FATTR4_WORD1_RAWDEV
107 | FATTR4_WORD1_SPACE_USED
108 | FATTR4_WORD1_TIME_ACCESS
109 | FATTR4_WORD1_TIME_METADATA
110 | FATTR4_WORD1_TIME_MODIFY
113 const u32 nfs4_statfs_bitmap[2] = {
114 FATTR4_WORD0_FILES_AVAIL
115 | FATTR4_WORD0_FILES_FREE
116 | FATTR4_WORD0_FILES_TOTAL,
117 FATTR4_WORD1_SPACE_AVAIL
118 | FATTR4_WORD1_SPACE_FREE
119 | FATTR4_WORD1_SPACE_TOTAL
122 const u32 nfs4_pathconf_bitmap[2] = {
124 | FATTR4_WORD0_MAXNAME,
128 const u32 nfs4_fsinfo_bitmap[2] = { FATTR4_WORD0_MAXFILESIZE
129 | FATTR4_WORD0_MAXREAD
130 | FATTR4_WORD0_MAXWRITE
131 | FATTR4_WORD0_LEASE_TIME,
132 FATTR4_WORD1_TIME_DELTA
133 | FATTR4_WORD1_FS_LAYOUT_TYPES
136 const u32 nfs4_fs_locations_bitmap[2] = {
138 | FATTR4_WORD0_CHANGE
141 | FATTR4_WORD0_FILEID
142 | FATTR4_WORD0_FS_LOCATIONS,
144 | FATTR4_WORD1_NUMLINKS
146 | FATTR4_WORD1_OWNER_GROUP
147 | FATTR4_WORD1_RAWDEV
148 | FATTR4_WORD1_SPACE_USED
149 | FATTR4_WORD1_TIME_ACCESS
150 | FATTR4_WORD1_TIME_METADATA
151 | FATTR4_WORD1_TIME_MODIFY
152 | FATTR4_WORD1_MOUNTED_ON_FILEID
155 static void nfs4_setup_readdir(u64 cookie, __be32 *verifier, struct dentry *dentry,
156 struct nfs4_readdir_arg *readdir)
160 BUG_ON(readdir->count < 80);
162 readdir->cookie = cookie;
163 memcpy(&readdir->verifier, verifier, sizeof(readdir->verifier));
168 memset(&readdir->verifier, 0, sizeof(readdir->verifier));
173 * NFSv4 servers do not return entries for '.' and '..'
174 * Therefore, we fake these entries here. We let '.'
175 * have cookie 0 and '..' have cookie 1. Note that
176 * when talking to the server, we always send cookie 0
179 start = p = kmap_atomic(*readdir->pages, KM_USER0);
182 *p++ = xdr_one; /* next */
183 *p++ = xdr_zero; /* cookie, first word */
184 *p++ = xdr_one; /* cookie, second word */
185 *p++ = xdr_one; /* entry len */
186 memcpy(p, ".\0\0\0", 4); /* entry */
188 *p++ = xdr_one; /* bitmap length */
189 *p++ = htonl(FATTR4_WORD0_FILEID); /* bitmap */
190 *p++ = htonl(8); /* attribute buffer length */
191 p = xdr_encode_hyper(p, NFS_FILEID(dentry->d_inode));
194 *p++ = xdr_one; /* next */
195 *p++ = xdr_zero; /* cookie, first word */
196 *p++ = xdr_two; /* cookie, second word */
197 *p++ = xdr_two; /* entry len */
198 memcpy(p, "..\0\0", 4); /* entry */
200 *p++ = xdr_one; /* bitmap length */
201 *p++ = htonl(FATTR4_WORD0_FILEID); /* bitmap */
202 *p++ = htonl(8); /* attribute buffer length */
203 p = xdr_encode_hyper(p, NFS_FILEID(dentry->d_parent->d_inode));
205 readdir->pgbase = (char *)p - (char *)start;
206 readdir->count -= readdir->pgbase;
207 kunmap_atomic(start, KM_USER0);
210 static int nfs4_wait_clnt_recover(struct nfs_client *clp)
216 res = wait_on_bit(&clp->cl_state, NFS4CLNT_MANAGER_RUNNING,
217 nfs_wait_bit_killable, TASK_KILLABLE);
221 static int nfs4_delay(struct rpc_clnt *clnt, long *timeout)
228 *timeout = NFS4_POLL_RETRY_MIN;
229 if (*timeout > NFS4_POLL_RETRY_MAX)
230 *timeout = NFS4_POLL_RETRY_MAX;
231 schedule_timeout_killable(*timeout);
232 if (fatal_signal_pending(current))
238 /* This is the error handling routine for processes that are allowed
241 static int nfs4_handle_exception(const struct nfs_server *server, int errorcode, struct nfs4_exception *exception)
243 struct nfs_client *clp = server->nfs_client;
244 struct nfs4_state *state = exception->state;
247 exception->retry = 0;
251 case -NFS4ERR_ADMIN_REVOKED:
252 case -NFS4ERR_BAD_STATEID:
253 case -NFS4ERR_OPENMODE:
256 nfs4_state_mark_reclaim_nograce(clp, state);
257 goto do_state_recovery;
258 case -NFS4ERR_STALE_STATEID:
259 case -NFS4ERR_STALE_CLIENTID:
260 case -NFS4ERR_EXPIRED:
261 goto do_state_recovery;
262 #if defined(CONFIG_NFS_V4_1)
263 case -NFS4ERR_BADSESSION:
264 case -NFS4ERR_BADSLOT:
265 case -NFS4ERR_BAD_HIGH_SLOT:
266 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION:
267 case -NFS4ERR_DEADSESSION:
268 case -NFS4ERR_SEQ_FALSE_RETRY:
269 case -NFS4ERR_SEQ_MISORDERED:
270 dprintk("%s ERROR: %d Reset session\n", __func__,
272 nfs4_schedule_state_recovery(clp);
273 exception->retry = 1;
275 #endif /* defined(CONFIG_NFS_V4_1) */
276 case -NFS4ERR_FILE_OPEN:
277 if (exception->timeout > HZ) {
278 /* We have retried a decent amount, time to
287 ret = nfs4_delay(server->client, &exception->timeout);
290 case -NFS4ERR_OLD_STATEID:
291 exception->retry = 1;
293 /* We failed to handle the error */
294 return nfs4_map_errors(ret);
296 nfs4_schedule_state_recovery(clp);
297 ret = nfs4_wait_clnt_recover(clp);
299 exception->retry = 1;
304 static void do_renew_lease(struct nfs_client *clp, unsigned long timestamp)
306 spin_lock(&clp->cl_lock);
307 if (time_before(clp->cl_last_renewal,timestamp))
308 clp->cl_last_renewal = timestamp;
309 spin_unlock(&clp->cl_lock);
312 static void renew_lease(const struct nfs_server *server, unsigned long timestamp)
314 do_renew_lease(server->nfs_client, timestamp);
317 #if defined(CONFIG_NFS_V4_1)
320 * nfs4_free_slot - free a slot and efficiently update slot table.
322 * freeing a slot is trivially done by clearing its respective bit
324 * If the freed slotid equals highest_used_slotid we want to update it
325 * so that the server would be able to size down the slot table if needed,
326 * otherwise we know that the highest_used_slotid is still in use.
327 * When updating highest_used_slotid there may be "holes" in the bitmap
328 * so we need to scan down from highest_used_slotid to 0 looking for the now
329 * highest slotid in use.
330 * If none found, highest_used_slotid is set to -1.
332 * Must be called while holding tbl->slot_tbl_lock
335 nfs4_free_slot(struct nfs4_slot_table *tbl, struct nfs4_slot *free_slot)
337 int free_slotid = free_slot - tbl->slots;
338 int slotid = free_slotid;
340 BUG_ON(slotid < 0 || slotid >= NFS4_MAX_SLOT_TABLE);
341 /* clear used bit in bitmap */
342 __clear_bit(slotid, tbl->used_slots);
344 /* update highest_used_slotid when it is freed */
345 if (slotid == tbl->highest_used_slotid) {
346 slotid = find_last_bit(tbl->used_slots, tbl->max_slots);
347 if (slotid < tbl->max_slots)
348 tbl->highest_used_slotid = slotid;
350 tbl->highest_used_slotid = -1;
352 dprintk("%s: free_slotid %u highest_used_slotid %d\n", __func__,
353 free_slotid, tbl->highest_used_slotid);
357 * Signal state manager thread if session is drained
359 static void nfs41_check_drain_session_complete(struct nfs4_session *ses)
361 struct rpc_task *task;
363 if (!test_bit(NFS4_SESSION_DRAINING, &ses->session_state)) {
364 task = rpc_wake_up_next(&ses->fc_slot_table.slot_tbl_waitq);
366 rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED);
370 if (ses->fc_slot_table.highest_used_slotid != -1)
373 dprintk("%s COMPLETE: Session Drained\n", __func__);
374 complete(&ses->complete);
377 static void nfs41_sequence_free_slot(struct nfs4_sequence_res *res)
379 struct nfs4_slot_table *tbl;
381 tbl = &res->sr_session->fc_slot_table;
383 /* just wake up the next guy waiting since
384 * we may have not consumed a slot after all */
385 dprintk("%s: No slot\n", __func__);
389 spin_lock(&tbl->slot_tbl_lock);
390 nfs4_free_slot(tbl, res->sr_slot);
391 nfs41_check_drain_session_complete(res->sr_session);
392 spin_unlock(&tbl->slot_tbl_lock);
396 static int nfs41_sequence_done(struct rpc_task *task, struct nfs4_sequence_res *res)
398 unsigned long timestamp;
399 struct nfs_client *clp;
402 * sr_status remains 1 if an RPC level error occurred. The server
403 * may or may not have processed the sequence operation..
404 * Proceed as if the server received and processed the sequence
407 if (res->sr_status == 1)
408 res->sr_status = NFS_OK;
410 /* -ERESTARTSYS can result in skipping nfs41_sequence_setup */
414 /* Check the SEQUENCE operation status */
415 switch (res->sr_status) {
417 /* Update the slot's sequence and clientid lease timer */
418 ++res->sr_slot->seq_nr;
419 timestamp = res->sr_renewal_time;
420 clp = res->sr_session->clp;
421 do_renew_lease(clp, timestamp);
422 /* Check sequence flags */
423 if (atomic_read(&clp->cl_count) > 1)
424 nfs41_handle_sequence_flag_errors(clp, res->sr_status_flags);
427 /* The server detected a resend of the RPC call and
428 * returned NFS4ERR_DELAY as per Section 2.10.6.2
431 dprintk("%s: slot=%ld seq=%d: Operation in progress\n",
433 res->sr_slot - res->sr_session->fc_slot_table.slots,
434 res->sr_slot->seq_nr);
437 /* Just update the slot sequence no. */
438 ++res->sr_slot->seq_nr;
441 /* The session may be reset by one of the error handlers. */
442 dprintk("%s: Error %d free the slot \n", __func__, res->sr_status);
443 nfs41_sequence_free_slot(res);
446 if (!rpc_restart_call(task))
448 rpc_delay(task, NFS4_POLL_RETRY_MAX);
452 static int nfs4_sequence_done(struct rpc_task *task,
453 struct nfs4_sequence_res *res)
455 if (res->sr_session == NULL)
457 return nfs41_sequence_done(task, res);
461 * nfs4_find_slot - efficiently look for a free slot
463 * nfs4_find_slot looks for an unset bit in the used_slots bitmap.
464 * If found, we mark the slot as used, update the highest_used_slotid,
465 * and respectively set up the sequence operation args.
466 * The slot number is returned if found, or NFS4_MAX_SLOT_TABLE otherwise.
468 * Note: must be called with under the slot_tbl_lock.
471 nfs4_find_slot(struct nfs4_slot_table *tbl)
474 u8 ret_id = NFS4_MAX_SLOT_TABLE;
475 BUILD_BUG_ON((u8)NFS4_MAX_SLOT_TABLE != (int)NFS4_MAX_SLOT_TABLE);
477 dprintk("--> %s used_slots=%04lx highest_used=%d max_slots=%d\n",
478 __func__, tbl->used_slots[0], tbl->highest_used_slotid,
480 slotid = find_first_zero_bit(tbl->used_slots, tbl->max_slots);
481 if (slotid >= tbl->max_slots)
483 __set_bit(slotid, tbl->used_slots);
484 if (slotid > tbl->highest_used_slotid)
485 tbl->highest_used_slotid = slotid;
488 dprintk("<-- %s used_slots=%04lx highest_used=%d slotid=%d \n",
489 __func__, tbl->used_slots[0], tbl->highest_used_slotid, ret_id);
493 static int nfs41_setup_sequence(struct nfs4_session *session,
494 struct nfs4_sequence_args *args,
495 struct nfs4_sequence_res *res,
497 struct rpc_task *task)
499 struct nfs4_slot *slot;
500 struct nfs4_slot_table *tbl;
503 dprintk("--> %s\n", __func__);
504 /* slot already allocated? */
505 if (res->sr_slot != NULL)
508 tbl = &session->fc_slot_table;
510 spin_lock(&tbl->slot_tbl_lock);
511 if (test_bit(NFS4_SESSION_DRAINING, &session->session_state) &&
512 !rpc_task_has_priority(task, RPC_PRIORITY_PRIVILEGED)) {
514 * The state manager will wait until the slot table is empty.
515 * Schedule the reset thread
517 rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL);
518 spin_unlock(&tbl->slot_tbl_lock);
519 dprintk("%s Schedule Session Reset\n", __func__);
523 if (!rpc_queue_empty(&tbl->slot_tbl_waitq) &&
524 !rpc_task_has_priority(task, RPC_PRIORITY_PRIVILEGED)) {
525 rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL);
526 spin_unlock(&tbl->slot_tbl_lock);
527 dprintk("%s enforce FIFO order\n", __func__);
531 slotid = nfs4_find_slot(tbl);
532 if (slotid == NFS4_MAX_SLOT_TABLE) {
533 rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL);
534 spin_unlock(&tbl->slot_tbl_lock);
535 dprintk("<-- %s: no free slots\n", __func__);
538 spin_unlock(&tbl->slot_tbl_lock);
540 rpc_task_set_priority(task, RPC_PRIORITY_NORMAL);
541 slot = tbl->slots + slotid;
542 args->sa_session = session;
543 args->sa_slotid = slotid;
544 args->sa_cache_this = cache_reply;
546 dprintk("<-- %s slotid=%d seqid=%d\n", __func__, slotid, slot->seq_nr);
548 res->sr_session = session;
550 res->sr_renewal_time = jiffies;
551 res->sr_status_flags = 0;
553 * sr_status is only set in decode_sequence, and so will remain
554 * set to 1 if an rpc level failure occurs.
560 int nfs4_setup_sequence(const struct nfs_server *server,
561 struct nfs4_sequence_args *args,
562 struct nfs4_sequence_res *res,
564 struct rpc_task *task)
566 struct nfs4_session *session = nfs4_get_session(server);
569 if (session == NULL) {
570 args->sa_session = NULL;
571 res->sr_session = NULL;
575 dprintk("--> %s clp %p session %p sr_slot %ld\n",
576 __func__, session->clp, session, res->sr_slot ?
577 res->sr_slot - session->fc_slot_table.slots : -1);
579 ret = nfs41_setup_sequence(session, args, res, cache_reply,
582 dprintk("<-- %s status=%d\n", __func__, ret);
586 struct nfs41_call_sync_data {
587 const struct nfs_server *seq_server;
588 struct nfs4_sequence_args *seq_args;
589 struct nfs4_sequence_res *seq_res;
593 static void nfs41_call_sync_prepare(struct rpc_task *task, void *calldata)
595 struct nfs41_call_sync_data *data = calldata;
597 dprintk("--> %s data->seq_server %p\n", __func__, data->seq_server);
599 if (nfs4_setup_sequence(data->seq_server, data->seq_args,
600 data->seq_res, data->cache_reply, task))
602 rpc_call_start(task);
605 static void nfs41_call_priv_sync_prepare(struct rpc_task *task, void *calldata)
607 rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED);
608 nfs41_call_sync_prepare(task, calldata);
611 static void nfs41_call_sync_done(struct rpc_task *task, void *calldata)
613 struct nfs41_call_sync_data *data = calldata;
615 nfs41_sequence_done(task, data->seq_res);
618 struct rpc_call_ops nfs41_call_sync_ops = {
619 .rpc_call_prepare = nfs41_call_sync_prepare,
620 .rpc_call_done = nfs41_call_sync_done,
623 struct rpc_call_ops nfs41_call_priv_sync_ops = {
624 .rpc_call_prepare = nfs41_call_priv_sync_prepare,
625 .rpc_call_done = nfs41_call_sync_done,
628 static int nfs4_call_sync_sequence(struct nfs_server *server,
629 struct rpc_message *msg,
630 struct nfs4_sequence_args *args,
631 struct nfs4_sequence_res *res,
636 struct rpc_task *task;
637 struct nfs41_call_sync_data data = {
638 .seq_server = server,
641 .cache_reply = cache_reply,
643 struct rpc_task_setup task_setup = {
644 .rpc_client = server->client,
646 .callback_ops = &nfs41_call_sync_ops,
647 .callback_data = &data
652 task_setup.callback_ops = &nfs41_call_priv_sync_ops;
653 task = rpc_run_task(&task_setup);
657 ret = task->tk_status;
663 int _nfs4_call_sync_session(struct nfs_server *server,
664 struct rpc_message *msg,
665 struct nfs4_sequence_args *args,
666 struct nfs4_sequence_res *res,
669 return nfs4_call_sync_sequence(server, msg, args, res, cache_reply, 0);
673 static int nfs4_sequence_done(struct rpc_task *task,
674 struct nfs4_sequence_res *res)
678 #endif /* CONFIG_NFS_V4_1 */
680 int _nfs4_call_sync(struct nfs_server *server,
681 struct rpc_message *msg,
682 struct nfs4_sequence_args *args,
683 struct nfs4_sequence_res *res,
686 args->sa_session = res->sr_session = NULL;
687 return rpc_call_sync(server->client, msg, 0);
690 #define nfs4_call_sync(server, msg, args, res, cache_reply) \
691 (server)->nfs_client->cl_mvops->call_sync((server), (msg), &(args)->seq_args, \
692 &(res)->seq_res, (cache_reply))
694 static void update_changeattr(struct inode *dir, struct nfs4_change_info *cinfo)
696 struct nfs_inode *nfsi = NFS_I(dir);
698 spin_lock(&dir->i_lock);
699 nfsi->cache_validity |= NFS_INO_INVALID_ATTR|NFS_INO_REVAL_PAGECACHE|NFS_INO_INVALID_DATA;
700 if (!cinfo->atomic || cinfo->before != nfsi->change_attr)
701 nfs_force_lookup_revalidate(dir);
702 nfsi->change_attr = cinfo->after;
703 spin_unlock(&dir->i_lock);
706 struct nfs4_opendata {
708 struct nfs_openargs o_arg;
709 struct nfs_openres o_res;
710 struct nfs_open_confirmargs c_arg;
711 struct nfs_open_confirmres c_res;
712 struct nfs_fattr f_attr;
713 struct nfs_fattr dir_attr;
716 struct nfs4_state_owner *owner;
717 struct nfs4_state *state;
719 unsigned long timestamp;
720 unsigned int rpc_done : 1;
726 static void nfs4_init_opendata_res(struct nfs4_opendata *p)
728 p->o_res.f_attr = &p->f_attr;
729 p->o_res.dir_attr = &p->dir_attr;
730 p->o_res.seqid = p->o_arg.seqid;
731 p->c_res.seqid = p->c_arg.seqid;
732 p->o_res.server = p->o_arg.server;
733 nfs_fattr_init(&p->f_attr);
734 nfs_fattr_init(&p->dir_attr);
737 static struct nfs4_opendata *nfs4_opendata_alloc(struct path *path,
738 struct nfs4_state_owner *sp, fmode_t fmode, int flags,
739 const struct iattr *attrs,
742 struct dentry *parent = dget_parent(path->dentry);
743 struct inode *dir = parent->d_inode;
744 struct nfs_server *server = NFS_SERVER(dir);
745 struct nfs4_opendata *p;
747 p = kzalloc(sizeof(*p), gfp_mask);
750 p->o_arg.seqid = nfs_alloc_seqid(&sp->so_seqid, gfp_mask);
751 if (p->o_arg.seqid == NULL)
757 atomic_inc(&sp->so_count);
758 p->o_arg.fh = NFS_FH(dir);
759 p->o_arg.open_flags = flags;
760 p->o_arg.fmode = fmode & (FMODE_READ|FMODE_WRITE);
761 p->o_arg.clientid = server->nfs_client->cl_clientid;
762 p->o_arg.id = sp->so_owner_id.id;
763 p->o_arg.name = &p->path.dentry->d_name;
764 p->o_arg.server = server;
765 p->o_arg.bitmask = server->attr_bitmask;
766 p->o_arg.claim = NFS4_OPEN_CLAIM_NULL;
767 if (flags & O_CREAT) {
770 p->o_arg.u.attrs = &p->attrs;
771 memcpy(&p->attrs, attrs, sizeof(p->attrs));
772 s = (u32 *) p->o_arg.u.verifier.data;
776 p->c_arg.fh = &p->o_res.fh;
777 p->c_arg.stateid = &p->o_res.stateid;
778 p->c_arg.seqid = p->o_arg.seqid;
779 nfs4_init_opendata_res(p);
789 static void nfs4_opendata_free(struct kref *kref)
791 struct nfs4_opendata *p = container_of(kref,
792 struct nfs4_opendata, kref);
794 nfs_free_seqid(p->o_arg.seqid);
795 if (p->state != NULL)
796 nfs4_put_open_state(p->state);
797 nfs4_put_state_owner(p->owner);
803 static void nfs4_opendata_put(struct nfs4_opendata *p)
806 kref_put(&p->kref, nfs4_opendata_free);
809 static int nfs4_wait_for_completion_rpc_task(struct rpc_task *task)
813 ret = rpc_wait_for_completion_task(task);
817 static int can_open_cached(struct nfs4_state *state, fmode_t mode, int open_mode)
821 if (open_mode & O_EXCL)
823 switch (mode & (FMODE_READ|FMODE_WRITE)) {
825 ret |= test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0
826 && state->n_rdonly != 0;
829 ret |= test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0
830 && state->n_wronly != 0;
832 case FMODE_READ|FMODE_WRITE:
833 ret |= test_bit(NFS_O_RDWR_STATE, &state->flags) != 0
834 && state->n_rdwr != 0;
840 static int can_open_delegated(struct nfs_delegation *delegation, fmode_t fmode)
842 if ((delegation->type & fmode) != fmode)
844 if (test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags))
846 nfs_mark_delegation_referenced(delegation);
850 static void update_open_stateflags(struct nfs4_state *state, fmode_t fmode)
859 case FMODE_READ|FMODE_WRITE:
862 nfs4_state_set_mode_locked(state, state->state | fmode);
865 static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode)
867 if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0)
868 memcpy(state->stateid.data, stateid->data, sizeof(state->stateid.data));
869 memcpy(state->open_stateid.data, stateid->data, sizeof(state->open_stateid.data));
872 set_bit(NFS_O_RDONLY_STATE, &state->flags);
875 set_bit(NFS_O_WRONLY_STATE, &state->flags);
877 case FMODE_READ|FMODE_WRITE:
878 set_bit(NFS_O_RDWR_STATE, &state->flags);
882 static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode)
884 write_seqlock(&state->seqlock);
885 nfs_set_open_stateid_locked(state, stateid, fmode);
886 write_sequnlock(&state->seqlock);
889 static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, fmode_t fmode)
892 * Protect the call to nfs4_state_set_mode_locked and
893 * serialise the stateid update
895 write_seqlock(&state->seqlock);
896 if (deleg_stateid != NULL) {
897 memcpy(state->stateid.data, deleg_stateid->data, sizeof(state->stateid.data));
898 set_bit(NFS_DELEGATED_STATE, &state->flags);
900 if (open_stateid != NULL)
901 nfs_set_open_stateid_locked(state, open_stateid, fmode);
902 write_sequnlock(&state->seqlock);
903 spin_lock(&state->owner->so_lock);
904 update_open_stateflags(state, fmode);
905 spin_unlock(&state->owner->so_lock);
908 static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, fmode_t fmode)
910 struct nfs_inode *nfsi = NFS_I(state->inode);
911 struct nfs_delegation *deleg_cur;
914 fmode &= (FMODE_READ|FMODE_WRITE);
917 deleg_cur = rcu_dereference(nfsi->delegation);
918 if (deleg_cur == NULL)
921 spin_lock(&deleg_cur->lock);
922 if (nfsi->delegation != deleg_cur ||
923 (deleg_cur->type & fmode) != fmode)
924 goto no_delegation_unlock;
926 if (delegation == NULL)
927 delegation = &deleg_cur->stateid;
928 else if (memcmp(deleg_cur->stateid.data, delegation->data, NFS4_STATEID_SIZE) != 0)
929 goto no_delegation_unlock;
931 nfs_mark_delegation_referenced(deleg_cur);
932 __update_open_stateid(state, open_stateid, &deleg_cur->stateid, fmode);
934 no_delegation_unlock:
935 spin_unlock(&deleg_cur->lock);
939 if (!ret && open_stateid != NULL) {
940 __update_open_stateid(state, open_stateid, NULL, fmode);
948 static void nfs4_return_incompatible_delegation(struct inode *inode, fmode_t fmode)
950 struct nfs_delegation *delegation;
953 delegation = rcu_dereference(NFS_I(inode)->delegation);
954 if (delegation == NULL || (delegation->type & fmode) == fmode) {
959 nfs_inode_return_delegation(inode);
962 static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
964 struct nfs4_state *state = opendata->state;
965 struct nfs_inode *nfsi = NFS_I(state->inode);
966 struct nfs_delegation *delegation;
967 int open_mode = opendata->o_arg.open_flags & O_EXCL;
968 fmode_t fmode = opendata->o_arg.fmode;
969 nfs4_stateid stateid;
973 if (can_open_cached(state, fmode, open_mode)) {
974 spin_lock(&state->owner->so_lock);
975 if (can_open_cached(state, fmode, open_mode)) {
976 update_open_stateflags(state, fmode);
977 spin_unlock(&state->owner->so_lock);
978 goto out_return_state;
980 spin_unlock(&state->owner->so_lock);
983 delegation = rcu_dereference(nfsi->delegation);
984 if (delegation == NULL ||
985 !can_open_delegated(delegation, fmode)) {
989 /* Save the delegation */
990 memcpy(stateid.data, delegation->stateid.data, sizeof(stateid.data));
992 ret = nfs_may_open(state->inode, state->owner->so_cred, open_mode);
997 /* Try to update the stateid using the delegation */
998 if (update_open_stateid(state, NULL, &stateid, fmode))
999 goto out_return_state;
1002 return ERR_PTR(ret);
1004 atomic_inc(&state->count);
1008 static struct nfs4_state *nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data)
1010 struct inode *inode;
1011 struct nfs4_state *state = NULL;
1012 struct nfs_delegation *delegation;
1015 if (!data->rpc_done) {
1016 state = nfs4_try_open_cached(data);
1021 if (!(data->f_attr.valid & NFS_ATTR_FATTR))
1023 inode = nfs_fhget(data->dir->d_sb, &data->o_res.fh, &data->f_attr);
1024 ret = PTR_ERR(inode);
1028 state = nfs4_get_open_state(inode, data->owner);
1031 if (data->o_res.delegation_type != 0) {
1032 int delegation_flags = 0;
1035 delegation = rcu_dereference(NFS_I(inode)->delegation);
1037 delegation_flags = delegation->flags;
1039 if ((delegation_flags & 1UL<<NFS_DELEGATION_NEED_RECLAIM) == 0)
1040 nfs_inode_set_delegation(state->inode,
1041 data->owner->so_cred,
1044 nfs_inode_reclaim_delegation(state->inode,
1045 data->owner->so_cred,
1049 update_open_stateid(state, &data->o_res.stateid, NULL,
1057 return ERR_PTR(ret);
1060 static struct nfs_open_context *nfs4_state_find_open_context(struct nfs4_state *state)
1062 struct nfs_inode *nfsi = NFS_I(state->inode);
1063 struct nfs_open_context *ctx;
1065 spin_lock(&state->inode->i_lock);
1066 list_for_each_entry(ctx, &nfsi->open_files, list) {
1067 if (ctx->state != state)
1069 get_nfs_open_context(ctx);
1070 spin_unlock(&state->inode->i_lock);
1073 spin_unlock(&state->inode->i_lock);
1074 return ERR_PTR(-ENOENT);
1077 static struct nfs4_opendata *nfs4_open_recoverdata_alloc(struct nfs_open_context *ctx, struct nfs4_state *state)
1079 struct nfs4_opendata *opendata;
1081 opendata = nfs4_opendata_alloc(&ctx->path, state->owner, 0, 0, NULL, GFP_NOFS);
1082 if (opendata == NULL)
1083 return ERR_PTR(-ENOMEM);
1084 opendata->state = state;
1085 atomic_inc(&state->count);
1089 static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, fmode_t fmode, struct nfs4_state **res)
1091 struct nfs4_state *newstate;
1094 opendata->o_arg.open_flags = 0;
1095 opendata->o_arg.fmode = fmode;
1096 memset(&opendata->o_res, 0, sizeof(opendata->o_res));
1097 memset(&opendata->c_res, 0, sizeof(opendata->c_res));
1098 nfs4_init_opendata_res(opendata);
1099 ret = _nfs4_recover_proc_open(opendata);
1102 newstate = nfs4_opendata_to_nfs4_state(opendata);
1103 if (IS_ERR(newstate))
1104 return PTR_ERR(newstate);
1105 nfs4_close_state(&opendata->path, newstate, fmode);
1110 static int nfs4_open_recover(struct nfs4_opendata *opendata, struct nfs4_state *state)
1112 struct nfs4_state *newstate;
1115 /* memory barrier prior to reading state->n_* */
1116 clear_bit(NFS_DELEGATED_STATE, &state->flags);
1118 if (state->n_rdwr != 0) {
1119 clear_bit(NFS_O_RDWR_STATE, &state->flags);
1120 ret = nfs4_open_recover_helper(opendata, FMODE_READ|FMODE_WRITE, &newstate);
1123 if (newstate != state)
1126 if (state->n_wronly != 0) {
1127 clear_bit(NFS_O_WRONLY_STATE, &state->flags);
1128 ret = nfs4_open_recover_helper(opendata, FMODE_WRITE, &newstate);
1131 if (newstate != state)
1134 if (state->n_rdonly != 0) {
1135 clear_bit(NFS_O_RDONLY_STATE, &state->flags);
1136 ret = nfs4_open_recover_helper(opendata, FMODE_READ, &newstate);
1139 if (newstate != state)
1143 * We may have performed cached opens for all three recoveries.
1144 * Check if we need to update the current stateid.
1146 if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0 &&
1147 memcmp(state->stateid.data, state->open_stateid.data, sizeof(state->stateid.data)) != 0) {
1148 write_seqlock(&state->seqlock);
1149 if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0)
1150 memcpy(state->stateid.data, state->open_stateid.data, sizeof(state->stateid.data));
1151 write_sequnlock(&state->seqlock);
1158 * reclaim state on the server after a reboot.
1160 static int _nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state)
1162 struct nfs_delegation *delegation;
1163 struct nfs4_opendata *opendata;
1164 fmode_t delegation_type = 0;
1167 opendata = nfs4_open_recoverdata_alloc(ctx, state);
1168 if (IS_ERR(opendata))
1169 return PTR_ERR(opendata);
1170 opendata->o_arg.claim = NFS4_OPEN_CLAIM_PREVIOUS;
1171 opendata->o_arg.fh = NFS_FH(state->inode);
1173 delegation = rcu_dereference(NFS_I(state->inode)->delegation);
1174 if (delegation != NULL && test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags) != 0)
1175 delegation_type = delegation->type;
1177 opendata->o_arg.u.delegation_type = delegation_type;
1178 status = nfs4_open_recover(opendata, state);
1179 nfs4_opendata_put(opendata);
1183 static int nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state)
1185 struct nfs_server *server = NFS_SERVER(state->inode);
1186 struct nfs4_exception exception = { };
1189 err = _nfs4_do_open_reclaim(ctx, state);
1190 if (err != -NFS4ERR_DELAY)
1192 nfs4_handle_exception(server, err, &exception);
1193 } while (exception.retry);
1197 static int nfs4_open_reclaim(struct nfs4_state_owner *sp, struct nfs4_state *state)
1199 struct nfs_open_context *ctx;
1202 ctx = nfs4_state_find_open_context(state);
1204 return PTR_ERR(ctx);
1205 ret = nfs4_do_open_reclaim(ctx, state);
1206 put_nfs_open_context(ctx);
1210 static int _nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state *state, const nfs4_stateid *stateid)
1212 struct nfs4_opendata *opendata;
1215 opendata = nfs4_open_recoverdata_alloc(ctx, state);
1216 if (IS_ERR(opendata))
1217 return PTR_ERR(opendata);
1218 opendata->o_arg.claim = NFS4_OPEN_CLAIM_DELEGATE_CUR;
1219 memcpy(opendata->o_arg.u.delegation.data, stateid->data,
1220 sizeof(opendata->o_arg.u.delegation.data));
1221 ret = nfs4_open_recover(opendata, state);
1222 nfs4_opendata_put(opendata);
1226 int nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state *state, const nfs4_stateid *stateid)
1228 struct nfs4_exception exception = { };
1229 struct nfs_server *server = NFS_SERVER(state->inode);
1232 err = _nfs4_open_delegation_recall(ctx, state, stateid);
1238 case -NFS4ERR_BADSESSION:
1239 case -NFS4ERR_BADSLOT:
1240 case -NFS4ERR_BAD_HIGH_SLOT:
1241 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION:
1242 case -NFS4ERR_DEADSESSION:
1243 nfs4_schedule_state_recovery(
1244 server->nfs_client);
1246 case -NFS4ERR_STALE_CLIENTID:
1247 case -NFS4ERR_STALE_STATEID:
1248 case -NFS4ERR_EXPIRED:
1249 /* Don't recall a delegation if it was lost */
1250 nfs4_schedule_state_recovery(server->nfs_client);
1254 * The show must go on: exit, but mark the
1255 * stateid as needing recovery.
1257 case -NFS4ERR_ADMIN_REVOKED:
1258 case -NFS4ERR_BAD_STATEID:
1259 nfs4_state_mark_reclaim_nograce(server->nfs_client, state);
1262 * User RPCSEC_GSS context has expired.
1263 * We cannot recover this stateid now, so
1264 * skip it and allow recovery thread to
1271 err = nfs4_handle_exception(server, err, &exception);
1272 } while (exception.retry);
1277 static void nfs4_open_confirm_done(struct rpc_task *task, void *calldata)
1279 struct nfs4_opendata *data = calldata;
1281 data->rpc_status = task->tk_status;
1282 if (data->rpc_status == 0) {
1283 memcpy(data->o_res.stateid.data, data->c_res.stateid.data,
1284 sizeof(data->o_res.stateid.data));
1285 nfs_confirm_seqid(&data->owner->so_seqid, 0);
1286 renew_lease(data->o_res.server, data->timestamp);
1291 static void nfs4_open_confirm_release(void *calldata)
1293 struct nfs4_opendata *data = calldata;
1294 struct nfs4_state *state = NULL;
1296 /* If this request hasn't been cancelled, do nothing */
1297 if (data->cancelled == 0)
1299 /* In case of error, no cleanup! */
1300 if (!data->rpc_done)
1302 state = nfs4_opendata_to_nfs4_state(data);
1304 nfs4_close_state(&data->path, state, data->o_arg.fmode);
1306 nfs4_opendata_put(data);
1309 static const struct rpc_call_ops nfs4_open_confirm_ops = {
1310 .rpc_call_done = nfs4_open_confirm_done,
1311 .rpc_release = nfs4_open_confirm_release,
1315 * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata
1317 static int _nfs4_proc_open_confirm(struct nfs4_opendata *data)
1319 struct nfs_server *server = NFS_SERVER(data->dir->d_inode);
1320 struct rpc_task *task;
1321 struct rpc_message msg = {
1322 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_CONFIRM],
1323 .rpc_argp = &data->c_arg,
1324 .rpc_resp = &data->c_res,
1325 .rpc_cred = data->owner->so_cred,
1327 struct rpc_task_setup task_setup_data = {
1328 .rpc_client = server->client,
1329 .rpc_message = &msg,
1330 .callback_ops = &nfs4_open_confirm_ops,
1331 .callback_data = data,
1332 .workqueue = nfsiod_workqueue,
1333 .flags = RPC_TASK_ASYNC,
1337 kref_get(&data->kref);
1339 data->rpc_status = 0;
1340 data->timestamp = jiffies;
1341 task = rpc_run_task(&task_setup_data);
1343 return PTR_ERR(task);
1344 status = nfs4_wait_for_completion_rpc_task(task);
1346 data->cancelled = 1;
1349 status = data->rpc_status;
1354 static void nfs4_open_prepare(struct rpc_task *task, void *calldata)
1356 struct nfs4_opendata *data = calldata;
1357 struct nfs4_state_owner *sp = data->owner;
1359 if (nfs_wait_on_sequence(data->o_arg.seqid, task) != 0)
1362 * Check if we still need to send an OPEN call, or if we can use
1363 * a delegation instead.
1365 if (data->state != NULL) {
1366 struct nfs_delegation *delegation;
1368 if (can_open_cached(data->state, data->o_arg.fmode, data->o_arg.open_flags))
1371 delegation = rcu_dereference(NFS_I(data->state->inode)->delegation);
1372 if (delegation != NULL &&
1373 test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags) == 0) {
1379 /* Update sequence id. */
1380 data->o_arg.id = sp->so_owner_id.id;
1381 data->o_arg.clientid = sp->so_server->nfs_client->cl_clientid;
1382 if (data->o_arg.claim == NFS4_OPEN_CLAIM_PREVIOUS) {
1383 task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_NOATTR];
1384 nfs_copy_fh(&data->o_res.fh, data->o_arg.fh);
1386 data->timestamp = jiffies;
1387 if (nfs4_setup_sequence(data->o_arg.server,
1388 &data->o_arg.seq_args,
1389 &data->o_res.seq_res, 1, task))
1391 rpc_call_start(task);
1394 task->tk_action = NULL;
1398 static void nfs4_recover_open_prepare(struct rpc_task *task, void *calldata)
1400 rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED);
1401 nfs4_open_prepare(task, calldata);
1404 static void nfs4_open_done(struct rpc_task *task, void *calldata)
1406 struct nfs4_opendata *data = calldata;
1408 data->rpc_status = task->tk_status;
1410 if (!nfs4_sequence_done(task, &data->o_res.seq_res))
1413 if (task->tk_status == 0) {
1414 switch (data->o_res.f_attr->mode & S_IFMT) {
1418 data->rpc_status = -ELOOP;
1421 data->rpc_status = -EISDIR;
1424 data->rpc_status = -ENOTDIR;
1426 renew_lease(data->o_res.server, data->timestamp);
1427 if (!(data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM))
1428 nfs_confirm_seqid(&data->owner->so_seqid, 0);
1433 static void nfs4_open_release(void *calldata)
1435 struct nfs4_opendata *data = calldata;
1436 struct nfs4_state *state = NULL;
1438 /* If this request hasn't been cancelled, do nothing */
1439 if (data->cancelled == 0)
1441 /* In case of error, no cleanup! */
1442 if (data->rpc_status != 0 || !data->rpc_done)
1444 /* In case we need an open_confirm, no cleanup! */
1445 if (data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM)
1447 state = nfs4_opendata_to_nfs4_state(data);
1449 nfs4_close_state(&data->path, state, data->o_arg.fmode);
1451 nfs4_opendata_put(data);
1454 static const struct rpc_call_ops nfs4_open_ops = {
1455 .rpc_call_prepare = nfs4_open_prepare,
1456 .rpc_call_done = nfs4_open_done,
1457 .rpc_release = nfs4_open_release,
1460 static const struct rpc_call_ops nfs4_recover_open_ops = {
1461 .rpc_call_prepare = nfs4_recover_open_prepare,
1462 .rpc_call_done = nfs4_open_done,
1463 .rpc_release = nfs4_open_release,
1466 static int nfs4_run_open_task(struct nfs4_opendata *data, int isrecover)
1468 struct inode *dir = data->dir->d_inode;
1469 struct nfs_server *server = NFS_SERVER(dir);
1470 struct nfs_openargs *o_arg = &data->o_arg;
1471 struct nfs_openres *o_res = &data->o_res;
1472 struct rpc_task *task;
1473 struct rpc_message msg = {
1474 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN],
1477 .rpc_cred = data->owner->so_cred,
1479 struct rpc_task_setup task_setup_data = {
1480 .rpc_client = server->client,
1481 .rpc_message = &msg,
1482 .callback_ops = &nfs4_open_ops,
1483 .callback_data = data,
1484 .workqueue = nfsiod_workqueue,
1485 .flags = RPC_TASK_ASYNC,
1489 kref_get(&data->kref);
1491 data->rpc_status = 0;
1492 data->cancelled = 0;
1494 task_setup_data.callback_ops = &nfs4_recover_open_ops;
1495 task = rpc_run_task(&task_setup_data);
1497 return PTR_ERR(task);
1498 status = nfs4_wait_for_completion_rpc_task(task);
1500 data->cancelled = 1;
1503 status = data->rpc_status;
1509 static int _nfs4_recover_proc_open(struct nfs4_opendata *data)
1511 struct inode *dir = data->dir->d_inode;
1512 struct nfs_openres *o_res = &data->o_res;
1515 status = nfs4_run_open_task(data, 1);
1516 if (status != 0 || !data->rpc_done)
1519 nfs_refresh_inode(dir, o_res->dir_attr);
1521 if (o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) {
1522 status = _nfs4_proc_open_confirm(data);
1531 * Note: On error, nfs4_proc_open will free the struct nfs4_opendata
1533 static int _nfs4_proc_open(struct nfs4_opendata *data)
1535 struct inode *dir = data->dir->d_inode;
1536 struct nfs_server *server = NFS_SERVER(dir);
1537 struct nfs_openargs *o_arg = &data->o_arg;
1538 struct nfs_openres *o_res = &data->o_res;
1541 status = nfs4_run_open_task(data, 0);
1542 if (status != 0 || !data->rpc_done)
1545 if (o_arg->open_flags & O_CREAT) {
1546 update_changeattr(dir, &o_res->cinfo);
1547 nfs_post_op_update_inode(dir, o_res->dir_attr);
1549 nfs_refresh_inode(dir, o_res->dir_attr);
1550 if ((o_res->rflags & NFS4_OPEN_RESULT_LOCKTYPE_POSIX) == 0)
1551 server->caps &= ~NFS_CAP_POSIX_LOCK;
1552 if(o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) {
1553 status = _nfs4_proc_open_confirm(data);
1557 if (!(o_res->f_attr->valid & NFS_ATTR_FATTR))
1558 _nfs4_proc_getattr(server, &o_res->fh, o_res->f_attr);
1562 static int nfs4_recover_expired_lease(struct nfs_server *server)
1564 struct nfs_client *clp = server->nfs_client;
1568 for (loop = NFS4_MAX_LOOP_ON_RECOVER; loop != 0; loop--) {
1569 ret = nfs4_wait_clnt_recover(clp);
1572 if (!test_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state) &&
1573 !test_bit(NFS4CLNT_CHECK_LEASE,&clp->cl_state))
1575 nfs4_schedule_state_recovery(clp);
1583 * reclaim state on the server after a network partition.
1584 * Assumes caller holds the appropriate lock
1586 static int _nfs4_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state)
1588 struct nfs4_opendata *opendata;
1591 opendata = nfs4_open_recoverdata_alloc(ctx, state);
1592 if (IS_ERR(opendata))
1593 return PTR_ERR(opendata);
1594 ret = nfs4_open_recover(opendata, state);
1596 d_drop(ctx->path.dentry);
1597 nfs4_opendata_put(opendata);
1601 static int nfs4_do_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state)
1603 struct nfs_server *server = NFS_SERVER(state->inode);
1604 struct nfs4_exception exception = { };
1608 err = _nfs4_open_expired(ctx, state);
1612 case -NFS4ERR_GRACE:
1613 case -NFS4ERR_DELAY:
1614 nfs4_handle_exception(server, err, &exception);
1617 } while (exception.retry);
1622 static int nfs4_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state)
1624 struct nfs_open_context *ctx;
1627 ctx = nfs4_state_find_open_context(state);
1629 return PTR_ERR(ctx);
1630 ret = nfs4_do_open_expired(ctx, state);
1631 put_nfs_open_context(ctx);
1636 * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-*
1637 * fields corresponding to attributes that were used to store the verifier.
1638 * Make sure we clobber those fields in the later setattr call
1640 static inline void nfs4_exclusive_attrset(struct nfs4_opendata *opendata, struct iattr *sattr)
1642 if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_ACCESS) &&
1643 !(sattr->ia_valid & ATTR_ATIME_SET))
1644 sattr->ia_valid |= ATTR_ATIME;
1646 if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_MODIFY) &&
1647 !(sattr->ia_valid & ATTR_MTIME_SET))
1648 sattr->ia_valid |= ATTR_MTIME;
1652 * Returns a referenced nfs4_state
1654 static int _nfs4_do_open(struct inode *dir, struct path *path, fmode_t fmode, int flags, struct iattr *sattr, struct rpc_cred *cred, struct nfs4_state **res)
1656 struct nfs4_state_owner *sp;
1657 struct nfs4_state *state = NULL;
1658 struct nfs_server *server = NFS_SERVER(dir);
1659 struct nfs4_opendata *opendata;
1662 /* Protect against reboot recovery conflicts */
1664 if (!(sp = nfs4_get_state_owner(server, cred))) {
1665 dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n");
1668 status = nfs4_recover_expired_lease(server);
1670 goto err_put_state_owner;
1671 if (path->dentry->d_inode != NULL)
1672 nfs4_return_incompatible_delegation(path->dentry->d_inode, fmode);
1674 opendata = nfs4_opendata_alloc(path, sp, fmode, flags, sattr, GFP_KERNEL);
1675 if (opendata == NULL)
1676 goto err_put_state_owner;
1678 if (path->dentry->d_inode != NULL)
1679 opendata->state = nfs4_get_open_state(path->dentry->d_inode, sp);
1681 status = _nfs4_proc_open(opendata);
1683 goto err_opendata_put;
1685 state = nfs4_opendata_to_nfs4_state(opendata);
1686 status = PTR_ERR(state);
1688 goto err_opendata_put;
1689 if (server->caps & NFS_CAP_POSIX_LOCK)
1690 set_bit(NFS_STATE_POSIX_LOCKS, &state->flags);
1692 if (opendata->o_arg.open_flags & O_EXCL) {
1693 nfs4_exclusive_attrset(opendata, sattr);
1695 nfs_fattr_init(opendata->o_res.f_attr);
1696 status = nfs4_do_setattr(state->inode, cred,
1697 opendata->o_res.f_attr, sattr,
1700 nfs_setattr_update_inode(state->inode, sattr);
1701 nfs_post_op_update_inode(state->inode, opendata->o_res.f_attr);
1703 nfs4_opendata_put(opendata);
1704 nfs4_put_state_owner(sp);
1708 nfs4_opendata_put(opendata);
1709 err_put_state_owner:
1710 nfs4_put_state_owner(sp);
1717 static struct nfs4_state *nfs4_do_open(struct inode *dir, struct path *path, fmode_t fmode, int flags, struct iattr *sattr, struct rpc_cred *cred)
1719 struct nfs4_exception exception = { };
1720 struct nfs4_state *res;
1724 status = _nfs4_do_open(dir, path, fmode, flags, sattr, cred, &res);
1727 /* NOTE: BAD_SEQID means the server and client disagree about the
1728 * book-keeping w.r.t. state-changing operations
1729 * (OPEN/CLOSE/LOCK/LOCKU...)
1730 * It is actually a sign of a bug on the client or on the server.
1732 * If we receive a BAD_SEQID error in the particular case of
1733 * doing an OPEN, we assume that nfs_increment_open_seqid() will
1734 * have unhashed the old state_owner for us, and that we can
1735 * therefore safely retry using a new one. We should still warn
1736 * the user though...
1738 if (status == -NFS4ERR_BAD_SEQID) {
1739 printk(KERN_WARNING "NFS: v4 server %s "
1740 " returned a bad sequence-id error!\n",
1741 NFS_SERVER(dir)->nfs_client->cl_hostname);
1742 exception.retry = 1;
1746 * BAD_STATEID on OPEN means that the server cancelled our
1747 * state before it received the OPEN_CONFIRM.
1748 * Recover by retrying the request as per the discussion
1749 * on Page 181 of RFC3530.
1751 if (status == -NFS4ERR_BAD_STATEID) {
1752 exception.retry = 1;
1755 if (status == -EAGAIN) {
1756 /* We must have found a delegation */
1757 exception.retry = 1;
1760 res = ERR_PTR(nfs4_handle_exception(NFS_SERVER(dir),
1761 status, &exception));
1762 } while (exception.retry);
1766 static int _nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred,
1767 struct nfs_fattr *fattr, struct iattr *sattr,
1768 struct nfs4_state *state)
1770 struct nfs_server *server = NFS_SERVER(inode);
1771 struct nfs_setattrargs arg = {
1772 .fh = NFS_FH(inode),
1775 .bitmask = server->attr_bitmask,
1777 struct nfs_setattrres res = {
1781 struct rpc_message msg = {
1782 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETATTR],
1787 unsigned long timestamp = jiffies;
1790 nfs_fattr_init(fattr);
1792 if (nfs4_copy_delegation_stateid(&arg.stateid, inode)) {
1793 /* Use that stateid */
1794 } else if (state != NULL) {
1795 nfs4_copy_stateid(&arg.stateid, state, current->files, current->tgid);
1797 memcpy(&arg.stateid, &zero_stateid, sizeof(arg.stateid));
1799 status = nfs4_call_sync(server, &msg, &arg, &res, 1);
1800 if (status == 0 && state != NULL)
1801 renew_lease(server, timestamp);
1805 static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred,
1806 struct nfs_fattr *fattr, struct iattr *sattr,
1807 struct nfs4_state *state)
1809 struct nfs_server *server = NFS_SERVER(inode);
1810 struct nfs4_exception exception = { };
1813 err = nfs4_handle_exception(server,
1814 _nfs4_do_setattr(inode, cred, fattr, sattr, state),
1816 } while (exception.retry);
1820 struct nfs4_closedata {
1822 struct inode *inode;
1823 struct nfs4_state *state;
1824 struct nfs_closeargs arg;
1825 struct nfs_closeres res;
1826 struct nfs_fattr fattr;
1827 unsigned long timestamp;
1830 static void nfs4_free_closedata(void *data)
1832 struct nfs4_closedata *calldata = data;
1833 struct nfs4_state_owner *sp = calldata->state->owner;
1835 nfs4_put_open_state(calldata->state);
1836 nfs_free_seqid(calldata->arg.seqid);
1837 nfs4_put_state_owner(sp);
1838 path_put(&calldata->path);
1842 static void nfs4_close_clear_stateid_flags(struct nfs4_state *state,
1845 spin_lock(&state->owner->so_lock);
1846 if (!(fmode & FMODE_READ))
1847 clear_bit(NFS_O_RDONLY_STATE, &state->flags);
1848 if (!(fmode & FMODE_WRITE))
1849 clear_bit(NFS_O_WRONLY_STATE, &state->flags);
1850 clear_bit(NFS_O_RDWR_STATE, &state->flags);
1851 spin_unlock(&state->owner->so_lock);
1854 static void nfs4_close_done(struct rpc_task *task, void *data)
1856 struct nfs4_closedata *calldata = data;
1857 struct nfs4_state *state = calldata->state;
1858 struct nfs_server *server = NFS_SERVER(calldata->inode);
1860 if (!nfs4_sequence_done(task, &calldata->res.seq_res))
1862 /* hmm. we are done with the inode, and in the process of freeing
1863 * the state_owner. we keep this around to process errors
1865 switch (task->tk_status) {
1867 nfs_set_open_stateid(state, &calldata->res.stateid, 0);
1868 renew_lease(server, calldata->timestamp);
1869 nfs4_close_clear_stateid_flags(state,
1870 calldata->arg.fmode);
1872 case -NFS4ERR_STALE_STATEID:
1873 case -NFS4ERR_OLD_STATEID:
1874 case -NFS4ERR_BAD_STATEID:
1875 case -NFS4ERR_EXPIRED:
1876 if (calldata->arg.fmode == 0)
1879 if (nfs4_async_handle_error(task, server, state) == -EAGAIN)
1880 rpc_restart_call_prepare(task);
1882 nfs_release_seqid(calldata->arg.seqid);
1883 nfs_refresh_inode(calldata->inode, calldata->res.fattr);
1886 static void nfs4_close_prepare(struct rpc_task *task, void *data)
1888 struct nfs4_closedata *calldata = data;
1889 struct nfs4_state *state = calldata->state;
1892 if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0)
1895 task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE];
1896 calldata->arg.fmode = FMODE_READ|FMODE_WRITE;
1897 spin_lock(&state->owner->so_lock);
1898 /* Calculate the change in open mode */
1899 if (state->n_rdwr == 0) {
1900 if (state->n_rdonly == 0) {
1901 call_close |= test_bit(NFS_O_RDONLY_STATE, &state->flags);
1902 call_close |= test_bit(NFS_O_RDWR_STATE, &state->flags);
1903 calldata->arg.fmode &= ~FMODE_READ;
1905 if (state->n_wronly == 0) {
1906 call_close |= test_bit(NFS_O_WRONLY_STATE, &state->flags);
1907 call_close |= test_bit(NFS_O_RDWR_STATE, &state->flags);
1908 calldata->arg.fmode &= ~FMODE_WRITE;
1911 spin_unlock(&state->owner->so_lock);
1914 /* Note: exit _without_ calling nfs4_close_done */
1915 task->tk_action = NULL;
1919 if (calldata->arg.fmode == 0)
1920 task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE];
1922 nfs_fattr_init(calldata->res.fattr);
1923 calldata->timestamp = jiffies;
1924 if (nfs4_setup_sequence(NFS_SERVER(calldata->inode),
1925 &calldata->arg.seq_args, &calldata->res.seq_res,
1928 rpc_call_start(task);
1931 static const struct rpc_call_ops nfs4_close_ops = {
1932 .rpc_call_prepare = nfs4_close_prepare,
1933 .rpc_call_done = nfs4_close_done,
1934 .rpc_release = nfs4_free_closedata,
1938 * It is possible for data to be read/written from a mem-mapped file
1939 * after the sys_close call (which hits the vfs layer as a flush).
1940 * This means that we can't safely call nfsv4 close on a file until
1941 * the inode is cleared. This in turn means that we are not good
1942 * NFSv4 citizens - we do not indicate to the server to update the file's
1943 * share state even when we are done with one of the three share
1944 * stateid's in the inode.
1946 * NOTE: Caller must be holding the sp->so_owner semaphore!
1948 int nfs4_do_close(struct path *path, struct nfs4_state *state, gfp_t gfp_mask, int wait)
1950 struct nfs_server *server = NFS_SERVER(state->inode);
1951 struct nfs4_closedata *calldata;
1952 struct nfs4_state_owner *sp = state->owner;
1953 struct rpc_task *task;
1954 struct rpc_message msg = {
1955 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE],
1956 .rpc_cred = state->owner->so_cred,
1958 struct rpc_task_setup task_setup_data = {
1959 .rpc_client = server->client,
1960 .rpc_message = &msg,
1961 .callback_ops = &nfs4_close_ops,
1962 .workqueue = nfsiod_workqueue,
1963 .flags = RPC_TASK_ASYNC,
1965 int status = -ENOMEM;
1967 calldata = kzalloc(sizeof(*calldata), gfp_mask);
1968 if (calldata == NULL)
1970 calldata->inode = state->inode;
1971 calldata->state = state;
1972 calldata->arg.fh = NFS_FH(state->inode);
1973 calldata->arg.stateid = &state->open_stateid;
1974 /* Serialization for the sequence id */
1975 calldata->arg.seqid = nfs_alloc_seqid(&state->owner->so_seqid, gfp_mask);
1976 if (calldata->arg.seqid == NULL)
1977 goto out_free_calldata;
1978 calldata->arg.fmode = 0;
1979 calldata->arg.bitmask = server->cache_consistency_bitmask;
1980 calldata->res.fattr = &calldata->fattr;
1981 calldata->res.seqid = calldata->arg.seqid;
1982 calldata->res.server = server;
1984 calldata->path = *path;
1986 msg.rpc_argp = &calldata->arg,
1987 msg.rpc_resp = &calldata->res,
1988 task_setup_data.callback_data = calldata;
1989 task = rpc_run_task(&task_setup_data);
1991 return PTR_ERR(task);
1994 status = rpc_wait_for_completion_task(task);
2000 nfs4_put_open_state(state);
2001 nfs4_put_state_owner(sp);
2005 static struct inode *
2006 nfs4_atomic_open(struct inode *dir, struct nfs_open_context *ctx, int open_flags, struct iattr *attr)
2008 struct nfs4_state *state;
2010 /* Protect against concurrent sillydeletes */
2011 state = nfs4_do_open(dir, &ctx->path, ctx->mode, open_flags, attr, ctx->cred);
2013 return ERR_CAST(state);
2015 return igrab(state->inode);
2018 static void nfs4_close_context(struct nfs_open_context *ctx, int is_sync)
2020 if (ctx->state == NULL)
2023 nfs4_close_sync(&ctx->path, ctx->state, ctx->mode);
2025 nfs4_close_state(&ctx->path, ctx->state, ctx->mode);
2028 static int _nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle)
2030 struct nfs4_server_caps_arg args = {
2033 struct nfs4_server_caps_res res = {};
2034 struct rpc_message msg = {
2035 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SERVER_CAPS],
2041 status = nfs4_call_sync(server, &msg, &args, &res, 0);
2043 memcpy(server->attr_bitmask, res.attr_bitmask, sizeof(server->attr_bitmask));
2044 server->caps &= ~(NFS_CAP_ACLS|NFS_CAP_HARDLINKS|
2045 NFS_CAP_SYMLINKS|NFS_CAP_FILEID|
2046 NFS_CAP_MODE|NFS_CAP_NLINK|NFS_CAP_OWNER|
2047 NFS_CAP_OWNER_GROUP|NFS_CAP_ATIME|
2048 NFS_CAP_CTIME|NFS_CAP_MTIME);
2049 if (res.attr_bitmask[0] & FATTR4_WORD0_ACL)
2050 server->caps |= NFS_CAP_ACLS;
2051 if (res.has_links != 0)
2052 server->caps |= NFS_CAP_HARDLINKS;
2053 if (res.has_symlinks != 0)
2054 server->caps |= NFS_CAP_SYMLINKS;
2055 if (res.attr_bitmask[0] & FATTR4_WORD0_FILEID)
2056 server->caps |= NFS_CAP_FILEID;
2057 if (res.attr_bitmask[1] & FATTR4_WORD1_MODE)
2058 server->caps |= NFS_CAP_MODE;
2059 if (res.attr_bitmask[1] & FATTR4_WORD1_NUMLINKS)
2060 server->caps |= NFS_CAP_NLINK;
2061 if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER)
2062 server->caps |= NFS_CAP_OWNER;
2063 if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER_GROUP)
2064 server->caps |= NFS_CAP_OWNER_GROUP;
2065 if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_ACCESS)
2066 server->caps |= NFS_CAP_ATIME;
2067 if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_METADATA)
2068 server->caps |= NFS_CAP_CTIME;
2069 if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_MODIFY)
2070 server->caps |= NFS_CAP_MTIME;
2072 memcpy(server->cache_consistency_bitmask, res.attr_bitmask, sizeof(server->cache_consistency_bitmask));
2073 server->cache_consistency_bitmask[0] &= FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE;
2074 server->cache_consistency_bitmask[1] &= FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY;
2075 server->acl_bitmask = res.acl_bitmask;
2081 int nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle)
2083 struct nfs4_exception exception = { };
2086 err = nfs4_handle_exception(server,
2087 _nfs4_server_capabilities(server, fhandle),
2089 } while (exception.retry);
2093 static int _nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle,
2094 struct nfs_fsinfo *info)
2096 struct nfs4_lookup_root_arg args = {
2097 .bitmask = nfs4_fattr_bitmap,
2099 struct nfs4_lookup_res res = {
2101 .fattr = info->fattr,
2104 struct rpc_message msg = {
2105 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP_ROOT],
2110 nfs_fattr_init(info->fattr);
2111 return nfs4_call_sync(server, &msg, &args, &res, 0);
2114 static int nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle,
2115 struct nfs_fsinfo *info)
2117 struct nfs4_exception exception = { };
2120 err = nfs4_handle_exception(server,
2121 _nfs4_lookup_root(server, fhandle, info),
2123 } while (exception.retry);
2128 * get the file handle for the "/" directory on the server
2130 static int nfs4_proc_get_root(struct nfs_server *server, struct nfs_fh *fhandle,
2131 struct nfs_fsinfo *info)
2135 status = nfs4_lookup_root(server, fhandle, info);
2137 status = nfs4_server_capabilities(server, fhandle);
2139 status = nfs4_do_fsinfo(server, fhandle, info);
2140 return nfs4_map_errors(status);
2144 * Get locations and (maybe) other attributes of a referral.
2145 * Note that we'll actually follow the referral later when
2146 * we detect fsid mismatch in inode revalidation
2148 static int nfs4_get_referral(struct inode *dir, const struct qstr *name, struct nfs_fattr *fattr, struct nfs_fh *fhandle)
2150 int status = -ENOMEM;
2151 struct page *page = NULL;
2152 struct nfs4_fs_locations *locations = NULL;
2154 page = alloc_page(GFP_KERNEL);
2157 locations = kmalloc(sizeof(struct nfs4_fs_locations), GFP_KERNEL);
2158 if (locations == NULL)
2161 status = nfs4_proc_fs_locations(dir, name, locations, page);
2164 /* Make sure server returned a different fsid for the referral */
2165 if (nfs_fsid_equal(&NFS_SERVER(dir)->fsid, &locations->fattr.fsid)) {
2166 dprintk("%s: server did not return a different fsid for a referral at %s\n", __func__, name->name);
2171 memcpy(fattr, &locations->fattr, sizeof(struct nfs_fattr));
2172 fattr->valid |= NFS_ATTR_FATTR_V4_REFERRAL;
2174 fattr->mode = S_IFDIR;
2175 memset(fhandle, 0, sizeof(struct nfs_fh));
2183 static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr)
2185 struct nfs4_getattr_arg args = {
2187 .bitmask = server->attr_bitmask,
2189 struct nfs4_getattr_res res = {
2193 struct rpc_message msg = {
2194 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETATTR],
2199 nfs_fattr_init(fattr);
2200 return nfs4_call_sync(server, &msg, &args, &res, 0);
2203 static int nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr)
2205 struct nfs4_exception exception = { };
2208 err = nfs4_handle_exception(server,
2209 _nfs4_proc_getattr(server, fhandle, fattr),
2211 } while (exception.retry);
2216 * The file is not closed if it is opened due to the a request to change
2217 * the size of the file. The open call will not be needed once the
2218 * VFS layer lookup-intents are implemented.
2220 * Close is called when the inode is destroyed.
2221 * If we haven't opened the file for O_WRONLY, we
2222 * need to in the size_change case to obtain a stateid.
2225 * Because OPEN is always done by name in nfsv4, it is
2226 * possible that we opened a different file by the same
2227 * name. We can recognize this race condition, but we
2228 * can't do anything about it besides returning an error.
2230 * This will be fixed with VFS changes (lookup-intent).
2233 nfs4_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr,
2234 struct iattr *sattr)
2236 struct inode *inode = dentry->d_inode;
2237 struct rpc_cred *cred = NULL;
2238 struct nfs4_state *state = NULL;
2241 nfs_fattr_init(fattr);
2243 /* Search for an existing open(O_WRITE) file */
2244 if (sattr->ia_valid & ATTR_FILE) {
2245 struct nfs_open_context *ctx;
2247 ctx = nfs_file_open_context(sattr->ia_file);
2254 status = nfs4_do_setattr(inode, cred, fattr, sattr, state);
2256 nfs_setattr_update_inode(inode, sattr);
2260 static int _nfs4_proc_lookupfh(struct nfs_server *server, const struct nfs_fh *dirfh,
2261 const struct qstr *name, struct nfs_fh *fhandle,
2262 struct nfs_fattr *fattr)
2265 struct nfs4_lookup_arg args = {
2266 .bitmask = server->attr_bitmask,
2270 struct nfs4_lookup_res res = {
2275 struct rpc_message msg = {
2276 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP],
2281 nfs_fattr_init(fattr);
2283 dprintk("NFS call lookupfh %s\n", name->name);
2284 status = nfs4_call_sync(server, &msg, &args, &res, 0);
2285 dprintk("NFS reply lookupfh: %d\n", status);
2289 static int nfs4_proc_lookupfh(struct nfs_server *server, struct nfs_fh *dirfh,
2290 struct qstr *name, struct nfs_fh *fhandle,
2291 struct nfs_fattr *fattr)
2293 struct nfs4_exception exception = { };
2296 err = _nfs4_proc_lookupfh(server, dirfh, name, fhandle, fattr);
2298 if (err == -NFS4ERR_MOVED) {
2302 err = nfs4_handle_exception(server, err, &exception);
2303 } while (exception.retry);
2307 static int _nfs4_proc_lookup(struct inode *dir, const struct qstr *name,
2308 struct nfs_fh *fhandle, struct nfs_fattr *fattr)
2312 dprintk("NFS call lookup %s\n", name->name);
2313 status = _nfs4_proc_lookupfh(NFS_SERVER(dir), NFS_FH(dir), name, fhandle, fattr);
2314 if (status == -NFS4ERR_MOVED)
2315 status = nfs4_get_referral(dir, name, fattr, fhandle);
2316 dprintk("NFS reply lookup: %d\n", status);
2320 static int nfs4_proc_lookup(struct inode *dir, struct qstr *name, struct nfs_fh *fhandle, struct nfs_fattr *fattr)
2322 struct nfs4_exception exception = { };
2325 err = nfs4_handle_exception(NFS_SERVER(dir),
2326 _nfs4_proc_lookup(dir, name, fhandle, fattr),
2328 } while (exception.retry);
2332 static int _nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry)
2334 struct nfs_server *server = NFS_SERVER(inode);
2335 struct nfs4_accessargs args = {
2336 .fh = NFS_FH(inode),
2337 .bitmask = server->attr_bitmask,
2339 struct nfs4_accessres res = {
2342 struct rpc_message msg = {
2343 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_ACCESS],
2346 .rpc_cred = entry->cred,
2348 int mode = entry->mask;
2352 * Determine which access bits we want to ask for...
2354 if (mode & MAY_READ)
2355 args.access |= NFS4_ACCESS_READ;
2356 if (S_ISDIR(inode->i_mode)) {
2357 if (mode & MAY_WRITE)
2358 args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND | NFS4_ACCESS_DELETE;
2359 if (mode & MAY_EXEC)
2360 args.access |= NFS4_ACCESS_LOOKUP;
2362 if (mode & MAY_WRITE)
2363 args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND;
2364 if (mode & MAY_EXEC)
2365 args.access |= NFS4_ACCESS_EXECUTE;
2368 res.fattr = nfs_alloc_fattr();
2369 if (res.fattr == NULL)
2372 status = nfs4_call_sync(server, &msg, &args, &res, 0);
2375 if (res.access & NFS4_ACCESS_READ)
2376 entry->mask |= MAY_READ;
2377 if (res.access & (NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND | NFS4_ACCESS_DELETE))
2378 entry->mask |= MAY_WRITE;
2379 if (res.access & (NFS4_ACCESS_LOOKUP|NFS4_ACCESS_EXECUTE))
2380 entry->mask |= MAY_EXEC;
2381 nfs_refresh_inode(inode, res.fattr);
2383 nfs_free_fattr(res.fattr);
2387 static int nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry)
2389 struct nfs4_exception exception = { };
2392 err = nfs4_handle_exception(NFS_SERVER(inode),
2393 _nfs4_proc_access(inode, entry),
2395 } while (exception.retry);
2400 * TODO: For the time being, we don't try to get any attributes
2401 * along with any of the zero-copy operations READ, READDIR,
2404 * In the case of the first three, we want to put the GETATTR
2405 * after the read-type operation -- this is because it is hard
2406 * to predict the length of a GETATTR response in v4, and thus
2407 * align the READ data correctly. This means that the GETATTR
2408 * may end up partially falling into the page cache, and we should
2409 * shift it into the 'tail' of the xdr_buf before processing.
2410 * To do this efficiently, we need to know the total length
2411 * of data received, which doesn't seem to be available outside
2414 * In the case of WRITE, we also want to put the GETATTR after
2415 * the operation -- in this case because we want to make sure
2416 * we get the post-operation mtime and size. This means that
2417 * we can't use xdr_encode_pages() as written: we need a variant
2418 * of it which would leave room in the 'tail' iovec.
2420 * Both of these changes to the XDR layer would in fact be quite
2421 * minor, but I decided to leave them for a subsequent patch.
2423 static int _nfs4_proc_readlink(struct inode *inode, struct page *page,
2424 unsigned int pgbase, unsigned int pglen)
2426 struct nfs4_readlink args = {
2427 .fh = NFS_FH(inode),
2432 struct nfs4_readlink_res res;
2433 struct rpc_message msg = {
2434 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READLINK],
2439 return nfs4_call_sync(NFS_SERVER(inode), &msg, &args, &res, 0);
2442 static int nfs4_proc_readlink(struct inode *inode, struct page *page,
2443 unsigned int pgbase, unsigned int pglen)
2445 struct nfs4_exception exception = { };
2448 err = nfs4_handle_exception(NFS_SERVER(inode),
2449 _nfs4_proc_readlink(inode, page, pgbase, pglen),
2451 } while (exception.retry);
2457 * We will need to arrange for the VFS layer to provide an atomic open.
2458 * Until then, this create/open method is prone to inefficiency and race
2459 * conditions due to the lookup, create, and open VFS calls from sys_open()
2460 * placed on the wire.
2462 * Given the above sorry state of affairs, I'm simply sending an OPEN.
2463 * The file will be opened again in the subsequent VFS open call
2464 * (nfs4_proc_file_open).
2466 * The open for read will just hang around to be used by any process that
2467 * opens the file O_RDONLY. This will all be resolved with the VFS changes.
2471 nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
2472 int flags, struct nfs_open_context *ctx)
2474 struct path my_path = {
2477 struct path *path = &my_path;
2478 struct nfs4_state *state;
2479 struct rpc_cred *cred = NULL;
2488 state = nfs4_do_open(dir, path, fmode, flags, sattr, cred);
2490 if (IS_ERR(state)) {
2491 status = PTR_ERR(state);
2494 d_add(dentry, igrab(state->inode));
2495 nfs_set_verifier(dentry, nfs_save_change_attribute(dir));
2499 nfs4_close_sync(path, state, fmode);
2504 static int _nfs4_proc_remove(struct inode *dir, struct qstr *name)
2506 struct nfs_server *server = NFS_SERVER(dir);
2507 struct nfs_removeargs args = {
2509 .name.len = name->len,
2510 .name.name = name->name,
2511 .bitmask = server->attr_bitmask,
2513 struct nfs_removeres res = {
2516 struct rpc_message msg = {
2517 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE],
2521 int status = -ENOMEM;
2523 res.dir_attr = nfs_alloc_fattr();
2524 if (res.dir_attr == NULL)
2527 status = nfs4_call_sync(server, &msg, &args, &res, 1);
2529 update_changeattr(dir, &res.cinfo);
2530 nfs_post_op_update_inode(dir, res.dir_attr);
2532 nfs_free_fattr(res.dir_attr);
2537 static int nfs4_proc_remove(struct inode *dir, struct qstr *name)
2539 struct nfs4_exception exception = { };
2542 err = nfs4_handle_exception(NFS_SERVER(dir),
2543 _nfs4_proc_remove(dir, name),
2545 } while (exception.retry);
2549 static void nfs4_proc_unlink_setup(struct rpc_message *msg, struct inode *dir)
2551 struct nfs_server *server = NFS_SERVER(dir);
2552 struct nfs_removeargs *args = msg->rpc_argp;
2553 struct nfs_removeres *res = msg->rpc_resp;
2555 args->bitmask = server->cache_consistency_bitmask;
2556 res->server = server;
2557 res->seq_res.sr_slot = NULL;
2558 msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE];
2561 static int nfs4_proc_unlink_done(struct rpc_task *task, struct inode *dir)
2563 struct nfs_removeres *res = task->tk_msg.rpc_resp;
2565 if (!nfs4_sequence_done(task, &res->seq_res))
2567 if (nfs4_async_handle_error(task, res->server, NULL) == -EAGAIN)
2569 update_changeattr(dir, &res->cinfo);
2570 nfs_post_op_update_inode(dir, res->dir_attr);
2574 static void nfs4_proc_rename_setup(struct rpc_message *msg, struct inode *dir)
2576 struct nfs_server *server = NFS_SERVER(dir);
2577 struct nfs_renameargs *arg = msg->rpc_argp;
2578 struct nfs_renameres *res = msg->rpc_resp;
2580 msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME];
2581 arg->bitmask = server->attr_bitmask;
2582 res->server = server;
2585 static int nfs4_proc_rename_done(struct rpc_task *task, struct inode *old_dir,
2586 struct inode *new_dir)
2588 struct nfs_renameres *res = task->tk_msg.rpc_resp;
2590 if (!nfs4_sequence_done(task, &res->seq_res))
2592 if (nfs4_async_handle_error(task, res->server, NULL) == -EAGAIN)
2595 update_changeattr(old_dir, &res->old_cinfo);
2596 nfs_post_op_update_inode(old_dir, res->old_fattr);
2597 update_changeattr(new_dir, &res->new_cinfo);
2598 nfs_post_op_update_inode(new_dir, res->new_fattr);
2602 static int _nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name,
2603 struct inode *new_dir, struct qstr *new_name)
2605 struct nfs_server *server = NFS_SERVER(old_dir);
2606 struct nfs_renameargs arg = {
2607 .old_dir = NFS_FH(old_dir),
2608 .new_dir = NFS_FH(new_dir),
2609 .old_name = old_name,
2610 .new_name = new_name,
2611 .bitmask = server->attr_bitmask,
2613 struct nfs_renameres res = {
2616 struct rpc_message msg = {
2617 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME],
2621 int status = -ENOMEM;
2623 res.old_fattr = nfs_alloc_fattr();
2624 res.new_fattr = nfs_alloc_fattr();
2625 if (res.old_fattr == NULL || res.new_fattr == NULL)
2628 status = nfs4_call_sync(server, &msg, &arg, &res, 1);
2630 update_changeattr(old_dir, &res.old_cinfo);
2631 nfs_post_op_update_inode(old_dir, res.old_fattr);
2632 update_changeattr(new_dir, &res.new_cinfo);
2633 nfs_post_op_update_inode(new_dir, res.new_fattr);
2636 nfs_free_fattr(res.new_fattr);
2637 nfs_free_fattr(res.old_fattr);
2641 static int nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name,
2642 struct inode *new_dir, struct qstr *new_name)
2644 struct nfs4_exception exception = { };
2647 err = nfs4_handle_exception(NFS_SERVER(old_dir),
2648 _nfs4_proc_rename(old_dir, old_name,
2651 } while (exception.retry);
2655 static int _nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name)
2657 struct nfs_server *server = NFS_SERVER(inode);
2658 struct nfs4_link_arg arg = {
2659 .fh = NFS_FH(inode),
2660 .dir_fh = NFS_FH(dir),
2662 .bitmask = server->attr_bitmask,
2664 struct nfs4_link_res res = {
2667 struct rpc_message msg = {
2668 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LINK],
2672 int status = -ENOMEM;
2674 res.fattr = nfs_alloc_fattr();
2675 res.dir_attr = nfs_alloc_fattr();
2676 if (res.fattr == NULL || res.dir_attr == NULL)
2679 status = nfs4_call_sync(server, &msg, &arg, &res, 1);
2681 update_changeattr(dir, &res.cinfo);
2682 nfs_post_op_update_inode(dir, res.dir_attr);
2683 nfs_post_op_update_inode(inode, res.fattr);
2686 nfs_free_fattr(res.dir_attr);
2687 nfs_free_fattr(res.fattr);
2691 static int nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name)
2693 struct nfs4_exception exception = { };
2696 err = nfs4_handle_exception(NFS_SERVER(inode),
2697 _nfs4_proc_link(inode, dir, name),
2699 } while (exception.retry);
2703 struct nfs4_createdata {
2704 struct rpc_message msg;
2705 struct nfs4_create_arg arg;
2706 struct nfs4_create_res res;
2708 struct nfs_fattr fattr;
2709 struct nfs_fattr dir_fattr;
2712 static struct nfs4_createdata *nfs4_alloc_createdata(struct inode *dir,
2713 struct qstr *name, struct iattr *sattr, u32 ftype)
2715 struct nfs4_createdata *data;
2717 data = kzalloc(sizeof(*data), GFP_KERNEL);
2719 struct nfs_server *server = NFS_SERVER(dir);
2721 data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE];
2722 data->msg.rpc_argp = &data->arg;
2723 data->msg.rpc_resp = &data->res;
2724 data->arg.dir_fh = NFS_FH(dir);
2725 data->arg.server = server;
2726 data->arg.name = name;
2727 data->arg.attrs = sattr;
2728 data->arg.ftype = ftype;
2729 data->arg.bitmask = server->attr_bitmask;
2730 data->res.server = server;
2731 data->res.fh = &data->fh;
2732 data->res.fattr = &data->fattr;
2733 data->res.dir_fattr = &data->dir_fattr;
2734 nfs_fattr_init(data->res.fattr);
2735 nfs_fattr_init(data->res.dir_fattr);
2740 static int nfs4_do_create(struct inode *dir, struct dentry *dentry, struct nfs4_createdata *data)
2742 int status = nfs4_call_sync(NFS_SERVER(dir), &data->msg,
2743 &data->arg, &data->res, 1);
2745 update_changeattr(dir, &data->res.dir_cinfo);
2746 nfs_post_op_update_inode(dir, data->res.dir_fattr);
2747 status = nfs_instantiate(dentry, data->res.fh, data->res.fattr);
2752 static void nfs4_free_createdata(struct nfs4_createdata *data)
2757 static int _nfs4_proc_symlink(struct inode *dir, struct dentry *dentry,
2758 struct page *page, unsigned int len, struct iattr *sattr)
2760 struct nfs4_createdata *data;
2761 int status = -ENAMETOOLONG;
2763 if (len > NFS4_MAXPATHLEN)
2767 data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4LNK);
2771 data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SYMLINK];
2772 data->arg.u.symlink.pages = &page;
2773 data->arg.u.symlink.len = len;
2775 status = nfs4_do_create(dir, dentry, data);
2777 nfs4_free_createdata(data);
2782 static int nfs4_proc_symlink(struct inode *dir, struct dentry *dentry,
2783 struct page *page, unsigned int len, struct iattr *sattr)
2785 struct nfs4_exception exception = { };
2788 err = nfs4_handle_exception(NFS_SERVER(dir),
2789 _nfs4_proc_symlink(dir, dentry, page,
2792 } while (exception.retry);
2796 static int _nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry,
2797 struct iattr *sattr)
2799 struct nfs4_createdata *data;
2800 int status = -ENOMEM;
2802 data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4DIR);
2806 status = nfs4_do_create(dir, dentry, data);
2808 nfs4_free_createdata(data);
2813 static int nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry,
2814 struct iattr *sattr)
2816 struct nfs4_exception exception = { };
2819 err = nfs4_handle_exception(NFS_SERVER(dir),
2820 _nfs4_proc_mkdir(dir, dentry, sattr),
2822 } while (exception.retry);
2826 static int _nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred,
2827 u64 cookie, struct page **pages, unsigned int count, int plus)
2829 struct inode *dir = dentry->d_inode;
2830 struct nfs4_readdir_arg args = {
2835 .bitmask = NFS_SERVER(dentry->d_inode)->attr_bitmask,
2838 struct nfs4_readdir_res res;
2839 struct rpc_message msg = {
2840 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READDIR],
2847 dprintk("%s: dentry = %s/%s, cookie = %Lu\n", __func__,
2848 dentry->d_parent->d_name.name,
2849 dentry->d_name.name,
2850 (unsigned long long)cookie);
2851 nfs4_setup_readdir(cookie, NFS_COOKIEVERF(dir), dentry, &args);
2852 res.pgbase = args.pgbase;
2853 status = nfs4_call_sync(NFS_SERVER(dir), &msg, &args, &res, 0);
2855 memcpy(NFS_COOKIEVERF(dir), res.verifier.data, NFS4_VERIFIER_SIZE);
2857 nfs_invalidate_atime(dir);
2859 dprintk("%s: returns %d\n", __func__, status);
2863 static int nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred,
2864 u64 cookie, struct page **pages, unsigned int count, int plus)
2866 struct nfs4_exception exception = { };
2869 err = nfs4_handle_exception(NFS_SERVER(dentry->d_inode),
2870 _nfs4_proc_readdir(dentry, cred, cookie,
2871 pages, count, plus),
2873 } while (exception.retry);
2877 static int _nfs4_proc_mknod(struct inode *dir, struct dentry *dentry,
2878 struct iattr *sattr, dev_t rdev)
2880 struct nfs4_createdata *data;
2881 int mode = sattr->ia_mode;
2882 int status = -ENOMEM;
2884 BUG_ON(!(sattr->ia_valid & ATTR_MODE));
2885 BUG_ON(!S_ISFIFO(mode) && !S_ISBLK(mode) && !S_ISCHR(mode) && !S_ISSOCK(mode));
2887 data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4SOCK);
2892 data->arg.ftype = NF4FIFO;
2893 else if (S_ISBLK(mode)) {
2894 data->arg.ftype = NF4BLK;
2895 data->arg.u.device.specdata1 = MAJOR(rdev);
2896 data->arg.u.device.specdata2 = MINOR(rdev);
2898 else if (S_ISCHR(mode)) {
2899 data->arg.ftype = NF4CHR;
2900 data->arg.u.device.specdata1 = MAJOR(rdev);
2901 data->arg.u.device.specdata2 = MINOR(rdev);
2904 status = nfs4_do_create(dir, dentry, data);
2906 nfs4_free_createdata(data);
2911 static int nfs4_proc_mknod(struct inode *dir, struct dentry *dentry,
2912 struct iattr *sattr, dev_t rdev)
2914 struct nfs4_exception exception = { };
2917 err = nfs4_handle_exception(NFS_SERVER(dir),
2918 _nfs4_proc_mknod(dir, dentry, sattr, rdev),
2920 } while (exception.retry);
2924 static int _nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle,
2925 struct nfs_fsstat *fsstat)
2927 struct nfs4_statfs_arg args = {
2929 .bitmask = server->attr_bitmask,
2931 struct nfs4_statfs_res res = {
2934 struct rpc_message msg = {
2935 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_STATFS],
2940 nfs_fattr_init(fsstat->fattr);
2941 return nfs4_call_sync(server, &msg, &args, &res, 0);
2944 static int nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsstat *fsstat)
2946 struct nfs4_exception exception = { };
2949 err = nfs4_handle_exception(server,
2950 _nfs4_proc_statfs(server, fhandle, fsstat),
2952 } while (exception.retry);
2956 static int _nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle,
2957 struct nfs_fsinfo *fsinfo)
2959 struct nfs4_fsinfo_arg args = {
2961 .bitmask = server->attr_bitmask,
2963 struct nfs4_fsinfo_res res = {
2966 struct rpc_message msg = {
2967 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FSINFO],
2972 return nfs4_call_sync(server, &msg, &args, &res, 0);
2975 static int nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo)
2977 struct nfs4_exception exception = { };
2981 err = nfs4_handle_exception(server,
2982 _nfs4_do_fsinfo(server, fhandle, fsinfo),
2984 } while (exception.retry);
2988 static int nfs4_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo)
2990 nfs_fattr_init(fsinfo->fattr);
2991 return nfs4_do_fsinfo(server, fhandle, fsinfo);
2994 static int _nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle,
2995 struct nfs_pathconf *pathconf)
2997 struct nfs4_pathconf_arg args = {
2999 .bitmask = server->attr_bitmask,
3001 struct nfs4_pathconf_res res = {
3002 .pathconf = pathconf,
3004 struct rpc_message msg = {
3005 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_PATHCONF],
3010 /* None of the pathconf attributes are mandatory to implement */
3011 if ((args.bitmask[0] & nfs4_pathconf_bitmap[0]) == 0) {
3012 memset(pathconf, 0, sizeof(*pathconf));
3016 nfs_fattr_init(pathconf->fattr);
3017 return nfs4_call_sync(server, &msg, &args, &res, 0);
3020 static int nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle,
3021 struct nfs_pathconf *pathconf)
3023 struct nfs4_exception exception = { };
3027 err = nfs4_handle_exception(server,
3028 _nfs4_proc_pathconf(server, fhandle, pathconf),
3030 } while (exception.retry);
3034 static int nfs4_read_done(struct rpc_task *task, struct nfs_read_data *data)
3036 struct nfs_server *server = NFS_SERVER(data->inode);
3038 dprintk("--> %s\n", __func__);
3040 if (!nfs4_sequence_done(task, &data->res.seq_res))
3043 if (nfs4_async_handle_error(task, server, data->args.context->state) == -EAGAIN) {
3044 nfs_restart_rpc(task, server->nfs_client);
3048 nfs_invalidate_atime(data->inode);
3049 if (task->tk_status > 0)
3050 renew_lease(server, data->timestamp);
3054 static void nfs4_proc_read_setup(struct nfs_read_data *data, struct rpc_message *msg)
3056 data->timestamp = jiffies;
3057 msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READ];
3060 static int nfs4_write_done(struct rpc_task *task, struct nfs_write_data *data)
3062 struct inode *inode = data->inode;
3064 if (!nfs4_sequence_done(task, &data->res.seq_res))
3067 if (nfs4_async_handle_error(task, NFS_SERVER(inode), data->args.context->state) == -EAGAIN) {
3068 nfs_restart_rpc(task, NFS_SERVER(inode)->nfs_client);
3071 if (task->tk_status >= 0) {
3072 renew_lease(NFS_SERVER(inode), data->timestamp);
3073 nfs_post_op_update_inode_force_wcc(inode, data->res.fattr);
3078 static void nfs4_proc_write_setup(struct nfs_write_data *data, struct rpc_message *msg)
3080 struct nfs_server *server = NFS_SERVER(data->inode);
3082 data->args.bitmask = server->cache_consistency_bitmask;
3083 data->res.server = server;
3084 data->timestamp = jiffies;
3086 msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_WRITE];
3089 static int nfs4_commit_done(struct rpc_task *task, struct nfs_write_data *data)
3091 struct inode *inode = data->inode;
3093 if (!nfs4_sequence_done(task, &data->res.seq_res))
3096 if (nfs4_async_handle_error(task, NFS_SERVER(inode), NULL) == -EAGAIN) {
3097 nfs_restart_rpc(task, NFS_SERVER(inode)->nfs_client);
3100 nfs_refresh_inode(inode, data->res.fattr);
3104 static void nfs4_proc_commit_setup(struct nfs_write_data *data, struct rpc_message *msg)
3106 struct nfs_server *server = NFS_SERVER(data->inode);
3108 data->args.bitmask = server->cache_consistency_bitmask;
3109 data->res.server = server;
3110 msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_COMMIT];
3113 struct nfs4_renewdata {
3114 struct nfs_client *client;
3115 unsigned long timestamp;
3119 * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special
3120 * standalone procedure for queueing an asynchronous RENEW.
3122 static void nfs4_renew_release(void *calldata)
3124 struct nfs4_renewdata *data = calldata;
3125 struct nfs_client *clp = data->client;
3127 if (atomic_read(&clp->cl_count) > 1)
3128 nfs4_schedule_state_renewal(clp);
3129 nfs_put_client(clp);
3133 static void nfs4_renew_done(struct rpc_task *task, void *calldata)
3135 struct nfs4_renewdata *data = calldata;
3136 struct nfs_client *clp = data->client;
3137 unsigned long timestamp = data->timestamp;
3139 if (task->tk_status < 0) {
3140 /* Unless we're shutting down, schedule state recovery! */
3141 if (test_bit(NFS_CS_RENEWD, &clp->cl_res_state) != 0)
3142 nfs4_schedule_state_recovery(clp);
3145 do_renew_lease(clp, timestamp);
3148 static const struct rpc_call_ops nfs4_renew_ops = {
3149 .rpc_call_done = nfs4_renew_done,
3150 .rpc_release = nfs4_renew_release,
3153 int nfs4_proc_async_renew(struct nfs_client *clp, struct rpc_cred *cred)
3155 struct rpc_message msg = {
3156 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW],
3160 struct nfs4_renewdata *data;
3162 if (!atomic_inc_not_zero(&clp->cl_count))
3164 data = kmalloc(sizeof(*data), GFP_KERNEL);
3168 data->timestamp = jiffies;
3169 return rpc_call_async(clp->cl_rpcclient, &msg, RPC_TASK_SOFT,
3170 &nfs4_renew_ops, data);
3173 int nfs4_proc_renew(struct nfs_client *clp, struct rpc_cred *cred)
3175 struct rpc_message msg = {
3176 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW],
3180 unsigned long now = jiffies;
3183 status = rpc_call_sync(clp->cl_rpcclient, &msg, 0);
3186 do_renew_lease(clp, now);
3190 static inline int nfs4_server_supports_acls(struct nfs_server *server)
3192 return (server->caps & NFS_CAP_ACLS)
3193 && (server->acl_bitmask & ACL4_SUPPORT_ALLOW_ACL)
3194 && (server->acl_bitmask & ACL4_SUPPORT_DENY_ACL);
3197 /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_CACHE_SIZE, and that
3198 * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_CACHE_SIZE) bytes on
3201 #define NFS4ACL_MAXPAGES (XATTR_SIZE_MAX >> PAGE_CACHE_SHIFT)
3203 static void buf_to_pages(const void *buf, size_t buflen,
3204 struct page **pages, unsigned int *pgbase)
3206 const void *p = buf;
3208 *pgbase = offset_in_page(buf);
3210 while (p < buf + buflen) {
3211 *(pages++) = virt_to_page(p);
3212 p += PAGE_CACHE_SIZE;
3216 struct nfs4_cached_acl {
3222 static void nfs4_set_cached_acl(struct inode *inode, struct nfs4_cached_acl *acl)
3224 struct nfs_inode *nfsi = NFS_I(inode);
3226 spin_lock(&inode->i_lock);
3227 kfree(nfsi->nfs4_acl);
3228 nfsi->nfs4_acl = acl;
3229 spin_unlock(&inode->i_lock);
3232 static void nfs4_zap_acl_attr(struct inode *inode)
3234 nfs4_set_cached_acl(inode, NULL);
3237 static inline ssize_t nfs4_read_cached_acl(struct inode *inode, char *buf, size_t buflen)
3239 struct nfs_inode *nfsi = NFS_I(inode);
3240 struct nfs4_cached_acl *acl;
3243 spin_lock(&inode->i_lock);
3244 acl = nfsi->nfs4_acl;
3247 if (buf == NULL) /* user is just asking for length */
3249 if (acl->cached == 0)
3251 ret = -ERANGE; /* see getxattr(2) man page */
3252 if (acl->len > buflen)
3254 memcpy(buf, acl->data, acl->len);
3258 spin_unlock(&inode->i_lock);
3262 static void nfs4_write_cached_acl(struct inode *inode, const char *buf, size_t acl_len)
3264 struct nfs4_cached_acl *acl;
3266 if (buf && acl_len <= PAGE_SIZE) {
3267 acl = kmalloc(sizeof(*acl) + acl_len, GFP_KERNEL);
3271 memcpy(acl->data, buf, acl_len);
3273 acl = kmalloc(sizeof(*acl), GFP_KERNEL);
3280 nfs4_set_cached_acl(inode, acl);
3283 static ssize_t __nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen)
3285 struct page *pages[NFS4ACL_MAXPAGES];
3286 struct nfs_getaclargs args = {
3287 .fh = NFS_FH(inode),
3291 struct nfs_getaclres res = {
3295 struct rpc_message msg = {
3296 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETACL],
3300 struct page *localpage = NULL;
3303 if (buflen < PAGE_SIZE) {
3304 /* As long as we're doing a round trip to the server anyway,
3305 * let's be prepared for a page of acl data. */
3306 localpage = alloc_page(GFP_KERNEL);
3307 resp_buf = page_address(localpage);
3308 if (localpage == NULL)
3310 args.acl_pages[0] = localpage;
3311 args.acl_pgbase = 0;
3312 args.acl_len = PAGE_SIZE;
3315 buf_to_pages(buf, buflen, args.acl_pages, &args.acl_pgbase);
3317 ret = nfs4_call_sync(NFS_SERVER(inode), &msg, &args, &res, 0);
3320 if (res.acl_len > args.acl_len)
3321 nfs4_write_cached_acl(inode, NULL, res.acl_len);
3323 nfs4_write_cached_acl(inode, resp_buf, res.acl_len);
3326 if (res.acl_len > buflen)
3329 memcpy(buf, resp_buf, res.acl_len);
3334 __free_page(localpage);
3338 static ssize_t nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen)
3340 struct nfs4_exception exception = { };
3343 ret = __nfs4_get_acl_uncached(inode, buf, buflen);
3346 ret = nfs4_handle_exception(NFS_SERVER(inode), ret, &exception);
3347 } while (exception.retry);
3351 static ssize_t nfs4_proc_get_acl(struct inode *inode, void *buf, size_t buflen)
3353 struct nfs_server *server = NFS_SERVER(inode);
3356 if (!nfs4_server_supports_acls(server))
3358 ret = nfs_revalidate_inode(server, inode);
3361 ret = nfs4_read_cached_acl(inode, buf, buflen);
3364 return nfs4_get_acl_uncached(inode, buf, buflen);
3367 static int __nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen)
3369 struct nfs_server *server = NFS_SERVER(inode);
3370 struct page *pages[NFS4ACL_MAXPAGES];
3371 struct nfs_setaclargs arg = {
3372 .fh = NFS_FH(inode),
3376 struct nfs_setaclres res;
3377 struct rpc_message msg = {
3378 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETACL],
3384 if (!nfs4_server_supports_acls(server))
3386 nfs_inode_return_delegation(inode);
3387 buf_to_pages(buf, buflen, arg.acl_pages, &arg.acl_pgbase);
3388 ret = nfs4_call_sync(server, &msg, &arg, &res, 1);
3389 nfs_access_zap_cache(inode);
3390 nfs_zap_acl_cache(inode);
3394 static int nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen)
3396 struct nfs4_exception exception = { };
3399 err = nfs4_handle_exception(NFS_SERVER(inode),
3400 __nfs4_proc_set_acl(inode, buf, buflen),
3402 } while (exception.retry);
3407 nfs4_async_handle_error(struct rpc_task *task, const struct nfs_server *server, struct nfs4_state *state)
3409 struct nfs_client *clp = server->nfs_client;
3411 if (task->tk_status >= 0)
3413 switch(task->tk_status) {
3414 case -NFS4ERR_ADMIN_REVOKED:
3415 case -NFS4ERR_BAD_STATEID:
3416 case -NFS4ERR_OPENMODE:
3419 nfs4_state_mark_reclaim_nograce(clp, state);
3420 goto do_state_recovery;
3421 case -NFS4ERR_STALE_STATEID:
3422 case -NFS4ERR_STALE_CLIENTID:
3423 case -NFS4ERR_EXPIRED:
3424 goto do_state_recovery;
3425 #if defined(CONFIG_NFS_V4_1)
3426 case -NFS4ERR_BADSESSION:
3427 case -NFS4ERR_BADSLOT:
3428 case -NFS4ERR_BAD_HIGH_SLOT:
3429 case -NFS4ERR_DEADSESSION:
3430 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION:
3431 case -NFS4ERR_SEQ_FALSE_RETRY:
3432 case -NFS4ERR_SEQ_MISORDERED:
3433 dprintk("%s ERROR %d, Reset session\n", __func__,
3435 nfs4_schedule_state_recovery(clp);
3436 task->tk_status = 0;
3438 #endif /* CONFIG_NFS_V4_1 */
3439 case -NFS4ERR_DELAY:
3440 nfs_inc_server_stats(server, NFSIOS_DELAY);
3441 case -NFS4ERR_GRACE:
3443 rpc_delay(task, NFS4_POLL_RETRY_MAX);
3444 task->tk_status = 0;
3446 case -NFS4ERR_OLD_STATEID:
3447 task->tk_status = 0;
3450 task->tk_status = nfs4_map_errors(task->tk_status);
3453 rpc_sleep_on(&clp->cl_rpcwaitq, task, NULL);
3454 nfs4_schedule_state_recovery(clp);
3455 if (test_bit(NFS4CLNT_MANAGER_RUNNING, &clp->cl_state) == 0)
3456 rpc_wake_up_queued_task(&clp->cl_rpcwaitq, task);
3457 task->tk_status = 0;
3461 int nfs4_proc_setclientid(struct nfs_client *clp, u32 program,
3462 unsigned short port, struct rpc_cred *cred,
3463 struct nfs4_setclientid_res *res)
3465 nfs4_verifier sc_verifier;
3466 struct nfs4_setclientid setclientid = {
3467 .sc_verifier = &sc_verifier,
3470 struct rpc_message msg = {
3471 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID],
3472 .rpc_argp = &setclientid,
3480 p = (__be32*)sc_verifier.data;
3481 *p++ = htonl((u32)clp->cl_boot_time.tv_sec);
3482 *p = htonl((u32)clp->cl_boot_time.tv_nsec);
3485 setclientid.sc_name_len = scnprintf(setclientid.sc_name,
3486 sizeof(setclientid.sc_name), "%s/%s %s %s %u",
3488 rpc_peeraddr2str(clp->cl_rpcclient,
3490 rpc_peeraddr2str(clp->cl_rpcclient,
3492 clp->cl_rpcclient->cl_auth->au_ops->au_name,
3493 clp->cl_id_uniquifier);
3494 setclientid.sc_netid_len = scnprintf(setclientid.sc_netid,
3495 sizeof(setclientid.sc_netid),
3496 rpc_peeraddr2str(clp->cl_rpcclient,
3497 RPC_DISPLAY_NETID));
3498 setclientid.sc_uaddr_len = scnprintf(setclientid.sc_uaddr,
3499 sizeof(setclientid.sc_uaddr), "%s.%u.%u",
3500 clp->cl_ipaddr, port >> 8, port & 255);
3502 status = rpc_call_sync(clp->cl_rpcclient, &msg, 0);
3503 if (status != -NFS4ERR_CLID_INUSE)
3508 ssleep(clp->cl_lease_time + 1);
3510 if (++clp->cl_id_uniquifier == 0)
3516 static int _nfs4_proc_setclientid_confirm(struct nfs_client *clp,
3517 struct nfs4_setclientid_res *arg,
3518 struct rpc_cred *cred)
3520 struct nfs_fsinfo fsinfo;
3521 struct rpc_message msg = {
3522 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID_CONFIRM],
3524 .rpc_resp = &fsinfo,
3531 status = rpc_call_sync(clp->cl_rpcclient, &msg, 0);
3533 spin_lock(&clp->cl_lock);
3534 clp->cl_lease_time = fsinfo.lease_time * HZ;
3535 clp->cl_last_renewal = now;
3536 spin_unlock(&clp->cl_lock);
3541 int nfs4_proc_setclientid_confirm(struct nfs_client *clp,
3542 struct nfs4_setclientid_res *arg,
3543 struct rpc_cred *cred)
3548 err = _nfs4_proc_setclientid_confirm(clp, arg, cred);
3552 case -NFS4ERR_RESOURCE:
3553 /* The IBM lawyers misread another document! */
3554 case -NFS4ERR_DELAY:
3555 err = nfs4_delay(clp->cl_rpcclient, &timeout);
3561 struct nfs4_delegreturndata {
3562 struct nfs4_delegreturnargs args;
3563 struct nfs4_delegreturnres res;
3565 nfs4_stateid stateid;
3566 unsigned long timestamp;
3567 struct nfs_fattr fattr;
3571 static void nfs4_delegreturn_done(struct rpc_task *task, void *calldata)
3573 struct nfs4_delegreturndata *data = calldata;
3575 if (!nfs4_sequence_done(task, &data->res.seq_res))
3578 switch (task->tk_status) {
3579 case -NFS4ERR_STALE_STATEID:
3580 case -NFS4ERR_EXPIRED:
3582 renew_lease(data->res.server, data->timestamp);
3585 if (nfs4_async_handle_error(task, data->res.server, NULL) ==
3587 nfs_restart_rpc(task, data->res.server->nfs_client);
3591 data->rpc_status = task->tk_status;
3594 static void nfs4_delegreturn_release(void *calldata)
3599 #if defined(CONFIG_NFS_V4_1)
3600 static void nfs4_delegreturn_prepare(struct rpc_task *task, void *data)
3602 struct nfs4_delegreturndata *d_data;
3604 d_data = (struct nfs4_delegreturndata *)data;
3606 if (nfs4_setup_sequence(d_data->res.server,
3607 &d_data->args.seq_args,
3608 &d_data->res.seq_res, 1, task))
3610 rpc_call_start(task);
3612 #endif /* CONFIG_NFS_V4_1 */
3614 static const struct rpc_call_ops nfs4_delegreturn_ops = {
3615 #if defined(CONFIG_NFS_V4_1)
3616 .rpc_call_prepare = nfs4_delegreturn_prepare,
3617 #endif /* CONFIG_NFS_V4_1 */
3618 .rpc_call_done = nfs4_delegreturn_done,
3619 .rpc_release = nfs4_delegreturn_release,
3622 static int _nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync)
3624 struct nfs4_delegreturndata *data;
3625 struct nfs_server *server = NFS_SERVER(inode);
3626 struct rpc_task *task;
3627 struct rpc_message msg = {
3628 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DELEGRETURN],
3631 struct rpc_task_setup task_setup_data = {
3632 .rpc_client = server->client,
3633 .rpc_message = &msg,
3634 .callback_ops = &nfs4_delegreturn_ops,
3635 .flags = RPC_TASK_ASYNC,
3639 data = kzalloc(sizeof(*data), GFP_NOFS);
3642 data->args.fhandle = &data->fh;
3643 data->args.stateid = &data->stateid;
3644 data->args.bitmask = server->attr_bitmask;
3645 nfs_copy_fh(&data->fh, NFS_FH(inode));
3646 memcpy(&data->stateid, stateid, sizeof(data->stateid));
3647 data->res.fattr = &data->fattr;
3648 data->res.server = server;
3649 nfs_fattr_init(data->res.fattr);
3650 data->timestamp = jiffies;
3651 data->rpc_status = 0;
3653 task_setup_data.callback_data = data;
3654 msg.rpc_argp = &data->args,
3655 msg.rpc_resp = &data->res,
3656 task = rpc_run_task(&task_setup_data);
3658 return PTR_ERR(task);
3661 status = nfs4_wait_for_completion_rpc_task(task);
3664 status = data->rpc_status;
3667 nfs_refresh_inode(inode, &data->fattr);
3673 int nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync)
3675 struct nfs_server *server = NFS_SERVER(inode);
3676 struct nfs4_exception exception = { };
3679 err = _nfs4_proc_delegreturn(inode, cred, stateid, issync);
3681 case -NFS4ERR_STALE_STATEID:
3682 case -NFS4ERR_EXPIRED:
3686 err = nfs4_handle_exception(server, err, &exception);
3687 } while (exception.retry);
3691 #define NFS4_LOCK_MINTIMEOUT (1 * HZ)
3692 #define NFS4_LOCK_MAXTIMEOUT (30 * HZ)
3695 * sleep, with exponential backoff, and retry the LOCK operation.
3697 static unsigned long
3698 nfs4_set_lock_task_retry(unsigned long timeout)
3700 schedule_timeout_killable(timeout);
3702 if (timeout > NFS4_LOCK_MAXTIMEOUT)
3703 return NFS4_LOCK_MAXTIMEOUT;
3707 static int _nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request)
3709 struct inode *inode = state->inode;
3710 struct nfs_server *server = NFS_SERVER(inode);
3711 struct nfs_client *clp = server->nfs_client;
3712 struct nfs_lockt_args arg = {
3713 .fh = NFS_FH(inode),
3716 struct nfs_lockt_res res = {
3719 struct rpc_message msg = {
3720 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKT],
3723 .rpc_cred = state->owner->so_cred,
3725 struct nfs4_lock_state *lsp;
3728 arg.lock_owner.clientid = clp->cl_clientid;
3729 status = nfs4_set_lock_state(state, request);
3732 lsp = request->fl_u.nfs4_fl.owner;
3733 arg.lock_owner.id = lsp->ls_id.id;
3734 status = nfs4_call_sync(server, &msg, &arg, &res, 1);
3737 request->fl_type = F_UNLCK;
3739 case -NFS4ERR_DENIED:
3742 request->fl_ops->fl_release_private(request);
3747 static int nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request)
3749 struct nfs4_exception exception = { };
3753 err = nfs4_handle_exception(NFS_SERVER(state->inode),
3754 _nfs4_proc_getlk(state, cmd, request),
3756 } while (exception.retry);
3760 static int do_vfs_lock(struct file *file, struct file_lock *fl)
3763 switch (fl->fl_flags & (FL_POSIX|FL_FLOCK)) {
3765 res = posix_lock_file_wait(file, fl);
3768 res = flock_lock_file_wait(file, fl);
3776 struct nfs4_unlockdata {
3777 struct nfs_locku_args arg;
3778 struct nfs_locku_res res;
3779 struct nfs4_lock_state *lsp;
3780 struct nfs_open_context *ctx;
3781 struct file_lock fl;
3782 const struct nfs_server *server;
3783 unsigned long timestamp;
3786 static struct nfs4_unlockdata *nfs4_alloc_unlockdata(struct file_lock *fl,
3787 struct nfs_open_context *ctx,
3788 struct nfs4_lock_state *lsp,
3789 struct nfs_seqid *seqid)
3791 struct nfs4_unlockdata *p;
3792 struct inode *inode = lsp->ls_state->inode;
3794 p = kzalloc(sizeof(*p), GFP_NOFS);
3797 p->arg.fh = NFS_FH(inode);
3799 p->arg.seqid = seqid;
3800 p->res.seqid = seqid;
3801 p->arg.stateid = &lsp->ls_stateid;
3803 atomic_inc(&lsp->ls_count);
3804 /* Ensure we don't close file until we're done freeing locks! */
3805 p->ctx = get_nfs_open_context(ctx);
3806 memcpy(&p->fl, fl, sizeof(p->fl));
3807 p->server = NFS_SERVER(inode);
3811 static void nfs4_locku_release_calldata(void *data)
3813 struct nfs4_unlockdata *calldata = data;
3814 nfs_free_seqid(calldata->arg.seqid);
3815 nfs4_put_lock_state(calldata->lsp);
3816 put_nfs_open_context(calldata->ctx);
3820 static void nfs4_locku_done(struct rpc_task *task, void *data)
3822 struct nfs4_unlockdata *calldata = data;
3824 if (!nfs4_sequence_done(task, &calldata->res.seq_res))
3826 switch (task->tk_status) {
3828 memcpy(calldata->lsp->ls_stateid.data,
3829 calldata->res.stateid.data,
3830 sizeof(calldata->lsp->ls_stateid.data));
3831 renew_lease(calldata->server, calldata->timestamp);
3833 case -NFS4ERR_BAD_STATEID:
3834 case -NFS4ERR_OLD_STATEID:
3835 case -NFS4ERR_STALE_STATEID:
3836 case -NFS4ERR_EXPIRED:
3839 if (nfs4_async_handle_error(task, calldata->server, NULL) == -EAGAIN)
3840 nfs_restart_rpc(task,
3841 calldata->server->nfs_client);
3845 static void nfs4_locku_prepare(struct rpc_task *task, void *data)
3847 struct nfs4_unlockdata *calldata = data;
3849 if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0)
3851 if ((calldata->lsp->ls_flags & NFS_LOCK_INITIALIZED) == 0) {
3852 /* Note: exit _without_ running nfs4_locku_done */
3853 task->tk_action = NULL;
3856 calldata->timestamp = jiffies;
3857 if (nfs4_setup_sequence(calldata->server,
3858 &calldata->arg.seq_args,
3859 &calldata->res.seq_res, 1, task))
3861 rpc_call_start(task);
3864 static const struct rpc_call_ops nfs4_locku_ops = {
3865 .rpc_call_prepare = nfs4_locku_prepare,
3866 .rpc_call_done = nfs4_locku_done,
3867 .rpc_release = nfs4_locku_release_calldata,
3870 static struct rpc_task *nfs4_do_unlck(struct file_lock *fl,
3871 struct nfs_open_context *ctx,
3872 struct nfs4_lock_state *lsp,
3873 struct nfs_seqid *seqid)
3875 struct nfs4_unlockdata *data;
3876 struct rpc_message msg = {
3877 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKU],
3878 .rpc_cred = ctx->cred,
3880 struct rpc_task_setup task_setup_data = {
3881 .rpc_client = NFS_CLIENT(lsp->ls_state->inode),
3882 .rpc_message = &msg,
3883 .callback_ops = &nfs4_locku_ops,
3884 .workqueue = nfsiod_workqueue,
3885 .flags = RPC_TASK_ASYNC,
3888 /* Ensure this is an unlock - when canceling a lock, the
3889 * canceled lock is passed in, and it won't be an unlock.
3891 fl->fl_type = F_UNLCK;
3893 data = nfs4_alloc_unlockdata(fl, ctx, lsp, seqid);
3895 nfs_free_seqid(seqid);
3896 return ERR_PTR(-ENOMEM);
3899 msg.rpc_argp = &data->arg,
3900 msg.rpc_resp = &data->res,
3901 task_setup_data.callback_data = data;
3902 return rpc_run_task(&task_setup_data);
3905 static int nfs4_proc_unlck(struct nfs4_state *state, int cmd, struct file_lock *request)
3907 struct nfs_inode *nfsi = NFS_I(state->inode);
3908 struct nfs_seqid *seqid;
3909 struct nfs4_lock_state *lsp;
3910 struct rpc_task *task;
3912 unsigned char fl_flags = request->fl_flags;
3914 status = nfs4_set_lock_state(state, request);
3915 /* Unlock _before_ we do the RPC call */
3916 request->fl_flags |= FL_EXISTS;
3917 down_read(&nfsi->rwsem);
3918 if (do_vfs_lock(request->fl_file, request) == -ENOENT) {
3919 up_read(&nfsi->rwsem);
3922 up_read(&nfsi->rwsem);
3925 /* Is this a delegated lock? */
3926 if (test_bit(NFS_DELEGATED_STATE, &state->flags))
3928 lsp = request->fl_u.nfs4_fl.owner;
3929 seqid = nfs_alloc_seqid(&lsp->ls_seqid, GFP_KERNEL);
3933 task = nfs4_do_unlck(request, nfs_file_open_context(request->fl_file), lsp, seqid);
3934 status = PTR_ERR(task);
3937 status = nfs4_wait_for_completion_rpc_task(task);
3940 request->fl_flags = fl_flags;
3944 struct nfs4_lockdata {
3945 struct nfs_lock_args arg;
3946 struct nfs_lock_res res;
3947 struct nfs4_lock_state *lsp;
3948 struct nfs_open_context *ctx;
3949 struct file_lock fl;
3950 unsigned long timestamp;
3953 struct nfs_server *server;
3956 static struct nfs4_lockdata *nfs4_alloc_lockdata(struct file_lock *fl,
3957 struct nfs_open_context *ctx, struct nfs4_lock_state *lsp,
3960 struct nfs4_lockdata *p;
3961 struct inode *inode = lsp->ls_state->inode;
3962 struct nfs_server *server = NFS_SERVER(inode);
3964 p = kzalloc(sizeof(*p), gfp_mask);
3968 p->arg.fh = NFS_FH(inode);
3970 p->arg.open_seqid = nfs_alloc_seqid(&lsp->ls_state->owner->so_seqid, gfp_mask);
3971 if (p->arg.open_seqid == NULL)
3973 p->arg.lock_seqid = nfs_alloc_seqid(&lsp->ls_seqid, gfp_mask);
3974 if (p->arg.lock_seqid == NULL)
3975 goto out_free_seqid;
3976 p->arg.lock_stateid = &lsp->ls_stateid;
3977 p->arg.lock_owner.clientid = server->nfs_client->cl_clientid;
3978 p->arg.lock_owner.id = lsp->ls_id.id;
3979 p->res.lock_seqid = p->arg.lock_seqid;
3982 atomic_inc(&lsp->ls_count);
3983 p->ctx = get_nfs_open_context(ctx);
3984 memcpy(&p->fl, fl, sizeof(p->fl));
3987 nfs_free_seqid(p->arg.open_seqid);
3993 static void nfs4_lock_prepare(struct rpc_task *task, void *calldata)
3995 struct nfs4_lockdata *data = calldata;
3996 struct nfs4_state *state = data->lsp->ls_state;
3998 dprintk("%s: begin!\n", __func__);
3999 if (nfs_wait_on_sequence(data->arg.lock_seqid, task) != 0)
4001 /* Do we need to do an open_to_lock_owner? */
4002 if (!(data->arg.lock_seqid->sequence->flags & NFS_SEQID_CONFIRMED)) {
4003 if (nfs_wait_on_sequence(data->arg.open_seqid, task) != 0)
4005 data->arg.open_stateid = &state->stateid;
4006 data->arg.new_lock_owner = 1;
4007 data->res.open_seqid = data->arg.open_seqid;
4009 data->arg.new_lock_owner = 0;
4010 data->timestamp = jiffies;
4011 if (nfs4_setup_sequence(data->server,
4012 &data->arg.seq_args,
4013 &data->res.seq_res, 1, task))
4015 rpc_call_start(task);
4016 dprintk("%s: done!, ret = %d\n", __func__, data->rpc_status);
4019 static void nfs4_recover_lock_prepare(struct rpc_task *task, void *calldata)
4021 rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED);
4022 nfs4_lock_prepare(task, calldata);
4025 static void nfs4_lock_done(struct rpc_task *task, void *calldata)
4027 struct nfs4_lockdata *data = calldata;
4029 dprintk("%s: begin!\n", __func__);
4031 if (!nfs4_sequence_done(task, &data->res.seq_res))
4034 data->rpc_status = task->tk_status;
4035 if (data->arg.new_lock_owner != 0) {
4036 if (data->rpc_status == 0)
4037 nfs_confirm_seqid(&data->lsp->ls_seqid, 0);
4041 if (data->rpc_status == 0) {
4042 memcpy(data->lsp->ls_stateid.data, data->res.stateid.data,
4043 sizeof(data->lsp->ls_stateid.data));
4044 data->lsp->ls_flags |= NFS_LOCK_INITIALIZED;
4045 renew_lease(NFS_SERVER(data->ctx->path.dentry->d_inode), data->timestamp);
4048 dprintk("%s: done, ret = %d!\n", __func__, data->rpc_status);
4051 static void nfs4_lock_release(void *calldata)
4053 struct nfs4_lockdata *data = calldata;
4055 dprintk("%s: begin!\n", __func__);
4056 nfs_free_seqid(data->arg.open_seqid);
4057 if (data->cancelled != 0) {
4058 struct rpc_task *task;
4059 task = nfs4_do_unlck(&data->fl, data->ctx, data->lsp,
4060 data->arg.lock_seqid);
4063 dprintk("%s: cancelling lock!\n", __func__);
4065 nfs_free_seqid(data->arg.lock_seqid);
4066 nfs4_put_lock_state(data->lsp);
4067 put_nfs_open_context(data->ctx);
4069 dprintk("%s: done!\n", __func__);
4072 static const struct rpc_call_ops nfs4_lock_ops = {
4073 .rpc_call_prepare = nfs4_lock_prepare,
4074 .rpc_call_done = nfs4_lock_done,
4075 .rpc_release = nfs4_lock_release,
4078 static const struct rpc_call_ops nfs4_recover_lock_ops = {
4079 .rpc_call_prepare = nfs4_recover_lock_prepare,
4080 .rpc_call_done = nfs4_lock_done,
4081 .rpc_release = nfs4_lock_release,
4084 static void nfs4_handle_setlk_error(struct nfs_server *server, struct nfs4_lock_state *lsp, int new_lock_owner, int error)
4086 struct nfs_client *clp = server->nfs_client;
4087 struct nfs4_state *state = lsp->ls_state;
4090 case -NFS4ERR_ADMIN_REVOKED:
4091 case -NFS4ERR_BAD_STATEID:
4092 case -NFS4ERR_EXPIRED:
4093 if (new_lock_owner != 0 ||
4094 (lsp->ls_flags & NFS_LOCK_INITIALIZED) != 0)
4095 nfs4_state_mark_reclaim_nograce(clp, state);
4096 lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED;
4098 case -NFS4ERR_STALE_STATEID:
4099 if (new_lock_owner != 0 ||
4100 (lsp->ls_flags & NFS_LOCK_INITIALIZED) != 0)
4101 nfs4_state_mark_reclaim_reboot(clp, state);
4102 lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED;
4106 static int _nfs4_do_setlk(struct nfs4_state *state, int cmd, struct file_lock *fl, int recovery_type)
4108 struct nfs4_lockdata *data;
4109 struct rpc_task *task;
4110 struct rpc_message msg = {
4111 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCK],
4112 .rpc_cred = state->owner->so_cred,
4114 struct rpc_task_setup task_setup_data = {
4115 .rpc_client = NFS_CLIENT(state->inode),
4116 .rpc_message = &msg,
4117 .callback_ops = &nfs4_lock_ops,
4118 .workqueue = nfsiod_workqueue,
4119 .flags = RPC_TASK_ASYNC,
4123 dprintk("%s: begin!\n", __func__);
4124 data = nfs4_alloc_lockdata(fl, nfs_file_open_context(fl->fl_file),
4125 fl->fl_u.nfs4_fl.owner,
4126 recovery_type == NFS_LOCK_NEW ? GFP_KERNEL : GFP_NOFS);
4130 data->arg.block = 1;
4131 if (recovery_type > NFS_LOCK_NEW) {
4132 if (recovery_type == NFS_LOCK_RECLAIM)
4133 data->arg.reclaim = NFS_LOCK_RECLAIM;
4134 task_setup_data.callback_ops = &nfs4_recover_lock_ops;
4136 msg.rpc_argp = &data->arg,
4137 msg.rpc_resp = &data->res,
4138 task_setup_data.callback_data = data;
4139 task = rpc_run_task(&task_setup_data);
4141 return PTR_ERR(task);
4142 ret = nfs4_wait_for_completion_rpc_task(task);
4144 ret = data->rpc_status;
4146 nfs4_handle_setlk_error(data->server, data->lsp,
4147 data->arg.new_lock_owner, ret);
4149 data->cancelled = 1;
4151 dprintk("%s: done, ret = %d!\n", __func__, ret);
4155 static int nfs4_lock_reclaim(struct nfs4_state *state, struct file_lock *request)
4157 struct nfs_server *server = NFS_SERVER(state->inode);
4158 struct nfs4_exception exception = { };
4162 /* Cache the lock if possible... */
4163 if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0)
4165 err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_RECLAIM);
4166 if (err != -NFS4ERR_DELAY)
4168 nfs4_handle_exception(server, err, &exception);
4169 } while (exception.retry);
4173 static int nfs4_lock_expired(struct nfs4_state *state, struct file_lock *request)
4175 struct nfs_server *server = NFS_SERVER(state->inode);
4176 struct nfs4_exception exception = { };
4179 err = nfs4_set_lock_state(state, request);
4183 if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0)
4185 err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_EXPIRED);
4189 case -NFS4ERR_GRACE:
4190 case -NFS4ERR_DELAY:
4191 nfs4_handle_exception(server, err, &exception);
4194 } while (exception.retry);
4199 static int _nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request)
4201 struct nfs_inode *nfsi = NFS_I(state->inode);
4202 unsigned char fl_flags = request->fl_flags;
4203 int status = -ENOLCK;
4205 if ((fl_flags & FL_POSIX) &&
4206 !test_bit(NFS_STATE_POSIX_LOCKS, &state->flags))
4208 /* Is this a delegated open? */
4209 status = nfs4_set_lock_state(state, request);
4212 request->fl_flags |= FL_ACCESS;
4213 status = do_vfs_lock(request->fl_file, request);
4216 down_read(&nfsi->rwsem);
4217 if (test_bit(NFS_DELEGATED_STATE, &state->flags)) {
4218 /* Yes: cache locks! */
4219 /* ...but avoid races with delegation recall... */
4220 request->fl_flags = fl_flags & ~FL_SLEEP;
4221 status = do_vfs_lock(request->fl_file, request);
4224 status = _nfs4_do_setlk(state, cmd, request, NFS_LOCK_NEW);
4227 /* Note: we always want to sleep here! */
4228 request->fl_flags = fl_flags | FL_SLEEP;
4229 if (do_vfs_lock(request->fl_file, request) < 0)
4230 printk(KERN_WARNING "%s: VFS is out of sync with lock manager!\n", __func__);
4232 up_read(&nfsi->rwsem);
4234 request->fl_flags = fl_flags;
4238 static int nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request)
4240 struct nfs4_exception exception = { };
4244 err = _nfs4_proc_setlk(state, cmd, request);
4245 if (err == -NFS4ERR_DENIED)
4247 err = nfs4_handle_exception(NFS_SERVER(state->inode),
4249 } while (exception.retry);
4254 nfs4_proc_lock(struct file *filp, int cmd, struct file_lock *request)
4256 struct nfs_open_context *ctx;
4257 struct nfs4_state *state;
4258 unsigned long timeout = NFS4_LOCK_MINTIMEOUT;
4261 /* verify open state */
4262 ctx = nfs_file_open_context(filp);
4265 if (request->fl_start < 0 || request->fl_end < 0)
4268 if (IS_GETLK(cmd)) {
4270 return nfs4_proc_getlk(state, F_GETLK, request);
4274 if (!(IS_SETLK(cmd) || IS_SETLKW(cmd)))
4277 if (request->fl_type == F_UNLCK) {
4279 return nfs4_proc_unlck(state, cmd, request);
4286 status = nfs4_proc_setlk(state, cmd, request);
4287 if ((status != -EAGAIN) || IS_SETLK(cmd))
4289 timeout = nfs4_set_lock_task_retry(timeout);
4290 status = -ERESTARTSYS;
4293 } while(status < 0);
4297 int nfs4_lock_delegation_recall(struct nfs4_state *state, struct file_lock *fl)
4299 struct nfs_server *server = NFS_SERVER(state->inode);
4300 struct nfs4_exception exception = { };
4303 err = nfs4_set_lock_state(state, fl);
4307 err = _nfs4_do_setlk(state, F_SETLK, fl, NFS_LOCK_NEW);
4310 printk(KERN_ERR "%s: unhandled error %d.\n",
4315 case -NFS4ERR_EXPIRED:
4316 case -NFS4ERR_STALE_CLIENTID:
4317 case -NFS4ERR_STALE_STATEID:
4318 case -NFS4ERR_BADSESSION:
4319 case -NFS4ERR_BADSLOT:
4320 case -NFS4ERR_BAD_HIGH_SLOT:
4321 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION:
4322 case -NFS4ERR_DEADSESSION:
4323 nfs4_schedule_state_recovery(server->nfs_client);
4327 * The show must go on: exit, but mark the
4328 * stateid as needing recovery.
4330 case -NFS4ERR_ADMIN_REVOKED:
4331 case -NFS4ERR_BAD_STATEID:
4332 case -NFS4ERR_OPENMODE:
4333 nfs4_state_mark_reclaim_nograce(server->nfs_client, state);
4338 * User RPCSEC_GSS context has expired.
4339 * We cannot recover this stateid now, so
4340 * skip it and allow recovery thread to
4346 case -NFS4ERR_DENIED:
4347 /* kill_proc(fl->fl_pid, SIGLOST, 1); */
4350 case -NFS4ERR_DELAY:
4353 err = nfs4_handle_exception(server, err, &exception);
4354 } while (exception.retry);
4359 static void nfs4_release_lockowner_release(void *calldata)
4364 const struct rpc_call_ops nfs4_release_lockowner_ops = {
4365 .rpc_release = nfs4_release_lockowner_release,
4368 void nfs4_release_lockowner(const struct nfs4_lock_state *lsp)
4370 struct nfs_server *server = lsp->ls_state->owner->so_server;
4371 struct nfs_release_lockowner_args *args;
4372 struct rpc_message msg = {
4373 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RELEASE_LOCKOWNER],
4376 if (server->nfs_client->cl_mvops->minor_version != 0)
4378 args = kmalloc(sizeof(*args), GFP_NOFS);
4381 args->lock_owner.clientid = server->nfs_client->cl_clientid;
4382 args->lock_owner.id = lsp->ls_id.id;
4383 msg.rpc_argp = args;
4384 rpc_call_async(server->client, &msg, 0, &nfs4_release_lockowner_ops, args);
4387 #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl"
4389 int nfs4_setxattr(struct dentry *dentry, const char *key, const void *buf,
4390 size_t buflen, int flags)
4392 struct inode *inode = dentry->d_inode;
4394 if (strcmp(key, XATTR_NAME_NFSV4_ACL) != 0)
4397 return nfs4_proc_set_acl(inode, buf, buflen);
4400 /* The getxattr man page suggests returning -ENODATA for unknown attributes,
4401 * and that's what we'll do for e.g. user attributes that haven't been set.
4402 * But we'll follow ext2/ext3's lead by returning -EOPNOTSUPP for unsupported
4403 * attributes in kernel-managed attribute namespaces. */
4404 ssize_t nfs4_getxattr(struct dentry *dentry, const char *key, void *buf,
4407 struct inode *inode = dentry->d_inode;
4409 if (strcmp(key, XATTR_NAME_NFSV4_ACL) != 0)
4412 return nfs4_proc_get_acl(inode, buf, buflen);
4415 ssize_t nfs4_listxattr(struct dentry *dentry, char *buf, size_t buflen)
4417 size_t len = strlen(XATTR_NAME_NFSV4_ACL) + 1;
4419 if (!nfs4_server_supports_acls(NFS_SERVER(dentry->d_inode)))
4421 if (buf && buflen < len)
4424 memcpy(buf, XATTR_NAME_NFSV4_ACL, len);
4428 static void nfs_fixup_referral_attributes(struct nfs_fattr *fattr)
4430 if (!((fattr->valid & NFS_ATTR_FATTR_FILEID) &&
4431 (fattr->valid & NFS_ATTR_FATTR_FSID) &&
4432 (fattr->valid & NFS_ATTR_FATTR_V4_REFERRAL)))
4435 fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE |
4436 NFS_ATTR_FATTR_NLINK;
4437 fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO;
4441 int nfs4_proc_fs_locations(struct inode *dir, const struct qstr *name,
4442 struct nfs4_fs_locations *fs_locations, struct page *page)
4444 struct nfs_server *server = NFS_SERVER(dir);
4446 [0] = FATTR4_WORD0_FSID | FATTR4_WORD0_FS_LOCATIONS,
4447 [1] = FATTR4_WORD1_MOUNTED_ON_FILEID,
4449 struct nfs4_fs_locations_arg args = {
4450 .dir_fh = NFS_FH(dir),
4455 struct nfs4_fs_locations_res res = {
4456 .fs_locations = fs_locations,
4458 struct rpc_message msg = {
4459 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FS_LOCATIONS],
4465 dprintk("%s: start\n", __func__);
4466 nfs_fattr_init(&fs_locations->fattr);
4467 fs_locations->server = server;
4468 fs_locations->nlocations = 0;
4469 status = nfs4_call_sync(server, &msg, &args, &res, 0);
4470 nfs_fixup_referral_attributes(&fs_locations->fattr);
4471 dprintk("%s: returned status = %d\n", __func__, status);
4475 #ifdef CONFIG_NFS_V4_1
4477 * nfs4_proc_exchange_id()
4479 * Since the clientid has expired, all compounds using sessions
4480 * associated with the stale clientid will be returning
4481 * NFS4ERR_BADSESSION in the sequence operation, and will therefore
4482 * be in some phase of session reset.
4484 int nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred)
4486 nfs4_verifier verifier;
4487 struct nfs41_exchange_id_args args = {
4489 .flags = clp->cl_exchange_flags,
4491 struct nfs41_exchange_id_res res = {
4495 struct rpc_message msg = {
4496 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_EXCHANGE_ID],
4503 dprintk("--> %s\n", __func__);
4504 BUG_ON(clp == NULL);
4506 /* Remove server-only flags */
4507 args.flags &= ~EXCHGID4_FLAG_CONFIRMED_R;
4509 p = (u32 *)verifier.data;
4510 *p++ = htonl((u32)clp->cl_boot_time.tv_sec);
4511 *p = htonl((u32)clp->cl_boot_time.tv_nsec);
4512 args.verifier = &verifier;
4515 args.id_len = scnprintf(args.id, sizeof(args.id),
4518 rpc_peeraddr2str(clp->cl_rpcclient,
4520 clp->cl_id_uniquifier);
4522 status = rpc_call_sync(clp->cl_rpcclient, &msg, 0);
4524 if (status != -NFS4ERR_CLID_INUSE)
4530 if (++clp->cl_id_uniquifier == 0)
4534 dprintk("<-- %s status= %d\n", __func__, status);
4538 struct nfs4_get_lease_time_data {
4539 struct nfs4_get_lease_time_args *args;
4540 struct nfs4_get_lease_time_res *res;
4541 struct nfs_client *clp;
4544 static void nfs4_get_lease_time_prepare(struct rpc_task *task,
4548 struct nfs4_get_lease_time_data *data =
4549 (struct nfs4_get_lease_time_data *)calldata;
4551 dprintk("--> %s\n", __func__);
4552 rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED);
4553 /* just setup sequence, do not trigger session recovery
4554 since we're invoked within one */
4555 ret = nfs41_setup_sequence(data->clp->cl_session,
4556 &data->args->la_seq_args,
4557 &data->res->lr_seq_res, 0, task);
4559 BUG_ON(ret == -EAGAIN);
4560 rpc_call_start(task);
4561 dprintk("<-- %s\n", __func__);
4565 * Called from nfs4_state_manager thread for session setup, so don't recover
4566 * from sequence operation or clientid errors.
4568 static void nfs4_get_lease_time_done(struct rpc_task *task, void *calldata)
4570 struct nfs4_get_lease_time_data *data =
4571 (struct nfs4_get_lease_time_data *)calldata;
4573 dprintk("--> %s\n", __func__);
4574 if (!nfs41_sequence_done(task, &data->res->lr_seq_res))
4576 switch (task->tk_status) {
4577 case -NFS4ERR_DELAY:
4578 case -NFS4ERR_GRACE:
4579 dprintk("%s Retry: tk_status %d\n", __func__, task->tk_status);
4580 rpc_delay(task, NFS4_POLL_RETRY_MIN);
4581 task->tk_status = 0;
4582 nfs_restart_rpc(task, data->clp);
4585 dprintk("<-- %s\n", __func__);
4588 struct rpc_call_ops nfs4_get_lease_time_ops = {
4589 .rpc_call_prepare = nfs4_get_lease_time_prepare,
4590 .rpc_call_done = nfs4_get_lease_time_done,
4593 int nfs4_proc_get_lease_time(struct nfs_client *clp, struct nfs_fsinfo *fsinfo)
4595 struct rpc_task *task;
4596 struct nfs4_get_lease_time_args args;
4597 struct nfs4_get_lease_time_res res = {
4598 .lr_fsinfo = fsinfo,
4600 struct nfs4_get_lease_time_data data = {
4605 struct rpc_message msg = {
4606 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GET_LEASE_TIME],
4610 struct rpc_task_setup task_setup = {
4611 .rpc_client = clp->cl_rpcclient,
4612 .rpc_message = &msg,
4613 .callback_ops = &nfs4_get_lease_time_ops,
4614 .callback_data = &data
4618 dprintk("--> %s\n", __func__);
4619 task = rpc_run_task(&task_setup);
4622 status = PTR_ERR(task);
4624 status = task->tk_status;
4627 dprintk("<-- %s return %d\n", __func__, status);
4633 * Reset a slot table
4635 static int nfs4_reset_slot_table(struct nfs4_slot_table *tbl, u32 max_reqs,
4638 struct nfs4_slot *new = NULL;
4642 dprintk("--> %s: max_reqs=%u, tbl->max_slots %d\n", __func__,
4643 max_reqs, tbl->max_slots);
4645 /* Does the newly negotiated max_reqs match the existing slot table? */
4646 if (max_reqs != tbl->max_slots) {
4648 new = kmalloc(max_reqs * sizeof(struct nfs4_slot),
4655 spin_lock(&tbl->slot_tbl_lock);
4658 tbl->max_slots = max_reqs;
4660 for (i = 0; i < tbl->max_slots; ++i)
4661 tbl->slots[i].seq_nr = ivalue;
4662 spin_unlock(&tbl->slot_tbl_lock);
4663 dprintk("%s: tbl=%p slots=%p max_slots=%d\n", __func__,
4664 tbl, tbl->slots, tbl->max_slots);
4666 dprintk("<-- %s: return %d\n", __func__, ret);
4671 * Reset the forechannel and backchannel slot tables
4673 static int nfs4_reset_slot_tables(struct nfs4_session *session)
4677 status = nfs4_reset_slot_table(&session->fc_slot_table,
4678 session->fc_attrs.max_reqs, 1);
4682 status = nfs4_reset_slot_table(&session->bc_slot_table,
4683 session->bc_attrs.max_reqs, 0);
4687 /* Destroy the slot table */
4688 static void nfs4_destroy_slot_tables(struct nfs4_session *session)
4690 if (session->fc_slot_table.slots != NULL) {
4691 kfree(session->fc_slot_table.slots);
4692 session->fc_slot_table.slots = NULL;
4694 if (session->bc_slot_table.slots != NULL) {
4695 kfree(session->bc_slot_table.slots);
4696 session->bc_slot_table.slots = NULL;
4702 * Initialize slot table
4704 static int nfs4_init_slot_table(struct nfs4_slot_table *tbl,
4705 int max_slots, int ivalue)
4707 struct nfs4_slot *slot;
4710 BUG_ON(max_slots > NFS4_MAX_SLOT_TABLE);
4712 dprintk("--> %s: max_reqs=%u\n", __func__, max_slots);
4714 slot = kcalloc(max_slots, sizeof(struct nfs4_slot), GFP_NOFS);
4719 spin_lock(&tbl->slot_tbl_lock);
4720 tbl->max_slots = max_slots;
4722 tbl->highest_used_slotid = -1; /* no slot is currently used */
4723 spin_unlock(&tbl->slot_tbl_lock);
4724 dprintk("%s: tbl=%p slots=%p max_slots=%d\n", __func__,
4725 tbl, tbl->slots, tbl->max_slots);
4727 dprintk("<-- %s: return %d\n", __func__, ret);
4732 * Initialize the forechannel and backchannel tables
4734 static int nfs4_init_slot_tables(struct nfs4_session *session)
4736 struct nfs4_slot_table *tbl;
4739 tbl = &session->fc_slot_table;
4740 if (tbl->slots == NULL) {
4741 status = nfs4_init_slot_table(tbl,
4742 session->fc_attrs.max_reqs, 1);
4747 tbl = &session->bc_slot_table;
4748 if (tbl->slots == NULL) {
4749 status = nfs4_init_slot_table(tbl,
4750 session->bc_attrs.max_reqs, 0);
4752 nfs4_destroy_slot_tables(session);
4758 struct nfs4_session *nfs4_alloc_session(struct nfs_client *clp)
4760 struct nfs4_session *session;
4761 struct nfs4_slot_table *tbl;
4763 session = kzalloc(sizeof(struct nfs4_session), GFP_NOFS);
4767 init_completion(&session->complete);
4769 tbl = &session->fc_slot_table;
4770 tbl->highest_used_slotid = -1;
4771 spin_lock_init(&tbl->slot_tbl_lock);
4772 rpc_init_priority_wait_queue(&tbl->slot_tbl_waitq, "ForeChannel Slot table");
4774 tbl = &session->bc_slot_table;
4775 tbl->highest_used_slotid = -1;
4776 spin_lock_init(&tbl->slot_tbl_lock);
4777 rpc_init_wait_queue(&tbl->slot_tbl_waitq, "BackChannel Slot table");
4779 session->session_state = 1<<NFS4_SESSION_INITING;
4785 void nfs4_destroy_session(struct nfs4_session *session)
4787 nfs4_proc_destroy_session(session);
4788 dprintk("%s Destroy backchannel for xprt %p\n",
4789 __func__, session->clp->cl_rpcclient->cl_xprt);
4790 xprt_destroy_backchannel(session->clp->cl_rpcclient->cl_xprt,
4791 NFS41_BC_MIN_CALLBACKS);
4792 nfs4_destroy_slot_tables(session);
4797 * Initialize the values to be used by the client in CREATE_SESSION
4798 * If nfs4_init_session set the fore channel request and response sizes,
4801 * Set the back channel max_resp_sz_cached to zero to force the client to
4802 * always set csa_cachethis to FALSE because the current implementation
4803 * of the back channel DRC only supports caching the CB_SEQUENCE operation.
4805 static void nfs4_init_channel_attrs(struct nfs41_create_session_args *args)
4807 struct nfs4_session *session = args->client->cl_session;
4808 unsigned int mxrqst_sz = session->fc_attrs.max_rqst_sz,
4809 mxresp_sz = session->fc_attrs.max_resp_sz;
4812 mxrqst_sz = NFS_MAX_FILE_IO_SIZE;
4814 mxresp_sz = NFS_MAX_FILE_IO_SIZE;
4815 /* Fore channel attributes */
4816 args->fc_attrs.headerpadsz = 0;
4817 args->fc_attrs.max_rqst_sz = mxrqst_sz;
4818 args->fc_attrs.max_resp_sz = mxresp_sz;
4819 args->fc_attrs.max_ops = NFS4_MAX_OPS;
4820 args->fc_attrs.max_reqs = session->clp->cl_rpcclient->cl_xprt->max_reqs;
4822 dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u "
4823 "max_ops=%u max_reqs=%u\n",
4825 args->fc_attrs.max_rqst_sz, args->fc_attrs.max_resp_sz,
4826 args->fc_attrs.max_ops, args->fc_attrs.max_reqs);
4828 /* Back channel attributes */
4829 args->bc_attrs.headerpadsz = 0;
4830 args->bc_attrs.max_rqst_sz = PAGE_SIZE;
4831 args->bc_attrs.max_resp_sz = PAGE_SIZE;
4832 args->bc_attrs.max_resp_sz_cached = 0;
4833 args->bc_attrs.max_ops = NFS4_MAX_BACK_CHANNEL_OPS;
4834 args->bc_attrs.max_reqs = 1;
4836 dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u "
4837 "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n",
4839 args->bc_attrs.max_rqst_sz, args->bc_attrs.max_resp_sz,
4840 args->bc_attrs.max_resp_sz_cached, args->bc_attrs.max_ops,
4841 args->bc_attrs.max_reqs);
4844 static int _verify_channel_attr(char *chan, char *attr_name, u32 sent, u32 rcvd)
4848 printk(KERN_WARNING "%s: Session INVALID: %s channel %s increased. "
4849 "sent=%u rcvd=%u\n", __func__, chan, attr_name, sent, rcvd);
4853 #define _verify_fore_channel_attr(_name_) \
4854 _verify_channel_attr("fore", #_name_, \
4855 args->fc_attrs._name_, \
4856 session->fc_attrs._name_)
4858 #define _verify_back_channel_attr(_name_) \
4859 _verify_channel_attr("back", #_name_, \
4860 args->bc_attrs._name_, \
4861 session->bc_attrs._name_)
4864 * The server is not allowed to increase the fore channel header pad size,
4865 * maximum response size, or maximum number of operations.
4867 * The back channel attributes are only negotiatied down: We send what the
4868 * (back channel) server insists upon.
4870 static int nfs4_verify_channel_attrs(struct nfs41_create_session_args *args,
4871 struct nfs4_session *session)
4875 ret |= _verify_fore_channel_attr(headerpadsz);
4876 ret |= _verify_fore_channel_attr(max_resp_sz);
4877 ret |= _verify_fore_channel_attr(max_ops);
4879 ret |= _verify_back_channel_attr(headerpadsz);
4880 ret |= _verify_back_channel_attr(max_rqst_sz);
4881 ret |= _verify_back_channel_attr(max_resp_sz);
4882 ret |= _verify_back_channel_attr(max_resp_sz_cached);
4883 ret |= _verify_back_channel_attr(max_ops);
4884 ret |= _verify_back_channel_attr(max_reqs);
4889 static int _nfs4_proc_create_session(struct nfs_client *clp)
4891 struct nfs4_session *session = clp->cl_session;
4892 struct nfs41_create_session_args args = {
4894 .cb_program = NFS4_CALLBACK,
4896 struct nfs41_create_session_res res = {
4899 struct rpc_message msg = {
4900 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE_SESSION],
4906 nfs4_init_channel_attrs(&args);
4907 args.flags = (SESSION4_PERSIST | SESSION4_BACK_CHAN);
4909 status = rpc_call_sync(session->clp->cl_rpcclient, &msg, 0);
4912 /* Verify the session's negotiated channel_attrs values */
4913 status = nfs4_verify_channel_attrs(&args, session);
4915 /* Increment the clientid slot sequence id */
4923 * Issues a CREATE_SESSION operation to the server.
4924 * It is the responsibility of the caller to verify the session is
4925 * expired before calling this routine.
4927 int nfs4_proc_create_session(struct nfs_client *clp)
4931 struct nfs4_session *session = clp->cl_session;
4933 dprintk("--> %s clp=%p session=%p\n", __func__, clp, session);
4935 status = _nfs4_proc_create_session(clp);
4939 /* Init and reset the fore channel */
4940 status = nfs4_init_slot_tables(session);
4941 dprintk("slot table initialization returned %d\n", status);
4944 status = nfs4_reset_slot_tables(session);
4945 dprintk("slot table reset returned %d\n", status);
4949 ptr = (unsigned *)&session->sess_id.data[0];
4950 dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__,
4951 clp->cl_seqid, ptr[0], ptr[1], ptr[2], ptr[3]);
4953 dprintk("<-- %s\n", __func__);
4958 * Issue the over-the-wire RPC DESTROY_SESSION.
4959 * The caller must serialize access to this routine.
4961 int nfs4_proc_destroy_session(struct nfs4_session *session)
4964 struct rpc_message msg;
4966 dprintk("--> nfs4_proc_destroy_session\n");
4968 /* session is still being setup */
4969 if (session->clp->cl_cons_state != NFS_CS_READY)
4972 msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DESTROY_SESSION];
4973 msg.rpc_argp = session;
4974 msg.rpc_resp = NULL;
4975 msg.rpc_cred = NULL;
4976 status = rpc_call_sync(session->clp->cl_rpcclient, &msg, 0);
4980 "Got error %d from the server on DESTROY_SESSION. "
4981 "Session has been destroyed regardless...\n", status);
4983 dprintk("<-- nfs4_proc_destroy_session\n");
4987 int nfs4_init_session(struct nfs_server *server)
4989 struct nfs_client *clp = server->nfs_client;
4990 struct nfs4_session *session;
4991 unsigned int rsize, wsize;
4994 if (!nfs4_has_session(clp))
4997 session = clp->cl_session;
4998 if (!test_and_clear_bit(NFS4_SESSION_INITING, &session->session_state))
5001 rsize = server->rsize;
5003 rsize = NFS_MAX_FILE_IO_SIZE;
5004 wsize = server->wsize;
5006 wsize = NFS_MAX_FILE_IO_SIZE;
5008 session->fc_attrs.max_rqst_sz = wsize + nfs41_maxwrite_overhead;
5009 session->fc_attrs.max_resp_sz = rsize + nfs41_maxread_overhead;
5011 ret = nfs4_recover_expired_lease(server);
5013 ret = nfs4_check_client_ready(clp);
5018 * Renew the cl_session lease.
5020 struct nfs4_sequence_data {
5021 struct nfs_client *clp;
5022 struct nfs4_sequence_args args;
5023 struct nfs4_sequence_res res;
5026 static void nfs41_sequence_release(void *data)
5028 struct nfs4_sequence_data *calldata = data;
5029 struct nfs_client *clp = calldata->clp;
5031 if (atomic_read(&clp->cl_count) > 1)
5032 nfs4_schedule_state_renewal(clp);
5033 nfs_put_client(clp);
5037 static int nfs41_sequence_handle_errors(struct rpc_task *task, struct nfs_client *clp)
5039 switch(task->tk_status) {
5040 case -NFS4ERR_DELAY:
5041 rpc_delay(task, NFS4_POLL_RETRY_MAX);
5044 nfs4_schedule_state_recovery(clp);
5049 static void nfs41_sequence_call_done(struct rpc_task *task, void *data)
5051 struct nfs4_sequence_data *calldata = data;
5052 struct nfs_client *clp = calldata->clp;
5054 if (!nfs41_sequence_done(task, task->tk_msg.rpc_resp))
5057 if (task->tk_status < 0) {
5058 dprintk("%s ERROR %d\n", __func__, task->tk_status);
5059 if (atomic_read(&clp->cl_count) == 1)
5062 if (nfs41_sequence_handle_errors(task, clp) == -EAGAIN) {
5063 rpc_restart_call_prepare(task);
5067 dprintk("%s rpc_cred %p\n", __func__, task->tk_msg.rpc_cred);
5069 dprintk("<-- %s\n", __func__);
5072 static void nfs41_sequence_prepare(struct rpc_task *task, void *data)
5074 struct nfs4_sequence_data *calldata = data;
5075 struct nfs_client *clp = calldata->clp;
5076 struct nfs4_sequence_args *args;
5077 struct nfs4_sequence_res *res;
5079 args = task->tk_msg.rpc_argp;
5080 res = task->tk_msg.rpc_resp;
5082 if (nfs41_setup_sequence(clp->cl_session, args, res, 0, task))
5084 rpc_call_start(task);
5087 static const struct rpc_call_ops nfs41_sequence_ops = {
5088 .rpc_call_done = nfs41_sequence_call_done,
5089 .rpc_call_prepare = nfs41_sequence_prepare,
5090 .rpc_release = nfs41_sequence_release,
5093 static struct rpc_task *_nfs41_proc_sequence(struct nfs_client *clp, struct rpc_cred *cred)
5095 struct nfs4_sequence_data *calldata;
5096 struct rpc_message msg = {
5097 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SEQUENCE],
5100 struct rpc_task_setup task_setup_data = {
5101 .rpc_client = clp->cl_rpcclient,
5102 .rpc_message = &msg,
5103 .callback_ops = &nfs41_sequence_ops,
5104 .flags = RPC_TASK_ASYNC | RPC_TASK_SOFT,
5107 if (!atomic_inc_not_zero(&clp->cl_count))
5108 return ERR_PTR(-EIO);
5109 calldata = kzalloc(sizeof(*calldata), GFP_NOFS);
5110 if (calldata == NULL) {
5111 nfs_put_client(clp);
5112 return ERR_PTR(-ENOMEM);
5114 msg.rpc_argp = &calldata->args;
5115 msg.rpc_resp = &calldata->res;
5116 calldata->clp = clp;
5117 task_setup_data.callback_data = calldata;
5119 return rpc_run_task(&task_setup_data);
5122 static int nfs41_proc_async_sequence(struct nfs_client *clp, struct rpc_cred *cred)
5124 struct rpc_task *task;
5127 task = _nfs41_proc_sequence(clp, cred);
5129 ret = PTR_ERR(task);
5132 dprintk("<-- %s status=%d\n", __func__, ret);
5136 static int nfs4_proc_sequence(struct nfs_client *clp, struct rpc_cred *cred)
5138 struct rpc_task *task;
5141 task = _nfs41_proc_sequence(clp, cred);
5143 ret = PTR_ERR(task);
5146 ret = rpc_wait_for_completion_task(task);
5148 ret = task->tk_status;
5151 dprintk("<-- %s status=%d\n", __func__, ret);
5155 struct nfs4_reclaim_complete_data {
5156 struct nfs_client *clp;
5157 struct nfs41_reclaim_complete_args arg;
5158 struct nfs41_reclaim_complete_res res;
5161 static void nfs4_reclaim_complete_prepare(struct rpc_task *task, void *data)
5163 struct nfs4_reclaim_complete_data *calldata = data;
5165 rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED);
5166 if (nfs41_setup_sequence(calldata->clp->cl_session,
5167 &calldata->arg.seq_args,
5168 &calldata->res.seq_res, 0, task))
5171 rpc_call_start(task);
5174 static int nfs41_reclaim_complete_handle_errors(struct rpc_task *task, struct nfs_client *clp)
5176 switch(task->tk_status) {
5178 case -NFS4ERR_COMPLETE_ALREADY:
5179 case -NFS4ERR_WRONG_CRED: /* What to do here? */
5181 case -NFS4ERR_DELAY:
5182 rpc_delay(task, NFS4_POLL_RETRY_MAX);
5185 nfs4_schedule_state_recovery(clp);
5190 static void nfs4_reclaim_complete_done(struct rpc_task *task, void *data)
5192 struct nfs4_reclaim_complete_data *calldata = data;
5193 struct nfs_client *clp = calldata->clp;
5194 struct nfs4_sequence_res *res = &calldata->res.seq_res;
5196 dprintk("--> %s\n", __func__);
5197 if (!nfs41_sequence_done(task, res))
5200 if (nfs41_reclaim_complete_handle_errors(task, clp) == -EAGAIN) {
5201 rpc_restart_call_prepare(task);
5204 dprintk("<-- %s\n", __func__);
5207 static void nfs4_free_reclaim_complete_data(void *data)
5209 struct nfs4_reclaim_complete_data *calldata = data;
5214 static const struct rpc_call_ops nfs4_reclaim_complete_call_ops = {
5215 .rpc_call_prepare = nfs4_reclaim_complete_prepare,
5216 .rpc_call_done = nfs4_reclaim_complete_done,
5217 .rpc_release = nfs4_free_reclaim_complete_data,
5221 * Issue a global reclaim complete.
5223 static int nfs41_proc_reclaim_complete(struct nfs_client *clp)
5225 struct nfs4_reclaim_complete_data *calldata;
5226 struct rpc_task *task;
5227 struct rpc_message msg = {
5228 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RECLAIM_COMPLETE],
5230 struct rpc_task_setup task_setup_data = {
5231 .rpc_client = clp->cl_rpcclient,
5232 .rpc_message = &msg,
5233 .callback_ops = &nfs4_reclaim_complete_call_ops,
5234 .flags = RPC_TASK_ASYNC,
5236 int status = -ENOMEM;
5238 dprintk("--> %s\n", __func__);
5239 calldata = kzalloc(sizeof(*calldata), GFP_NOFS);
5240 if (calldata == NULL)
5242 calldata->clp = clp;
5243 calldata->arg.one_fs = 0;
5245 msg.rpc_argp = &calldata->arg;
5246 msg.rpc_resp = &calldata->res;
5247 task_setup_data.callback_data = calldata;
5248 task = rpc_run_task(&task_setup_data);
5250 status = PTR_ERR(task);
5256 dprintk("<-- %s status=%d\n", __func__, status);
5259 #endif /* CONFIG_NFS_V4_1 */
5261 struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops = {
5262 .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT,
5263 .state_flag_bit = NFS_STATE_RECLAIM_REBOOT,
5264 .recover_open = nfs4_open_reclaim,
5265 .recover_lock = nfs4_lock_reclaim,
5266 .establish_clid = nfs4_init_clientid,
5267 .get_clid_cred = nfs4_get_setclientid_cred,
5270 #if defined(CONFIG_NFS_V4_1)
5271 struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops = {
5272 .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT,
5273 .state_flag_bit = NFS_STATE_RECLAIM_REBOOT,
5274 .recover_open = nfs4_open_reclaim,
5275 .recover_lock = nfs4_lock_reclaim,
5276 .establish_clid = nfs41_init_clientid,
5277 .get_clid_cred = nfs4_get_exchange_id_cred,
5278 .reclaim_complete = nfs41_proc_reclaim_complete,
5280 #endif /* CONFIG_NFS_V4_1 */
5282 struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops = {
5283 .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE,
5284 .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE,
5285 .recover_open = nfs4_open_expired,
5286 .recover_lock = nfs4_lock_expired,
5287 .establish_clid = nfs4_init_clientid,
5288 .get_clid_cred = nfs4_get_setclientid_cred,
5291 #if defined(CONFIG_NFS_V4_1)
5292 struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops = {
5293 .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE,
5294 .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE,
5295 .recover_open = nfs4_open_expired,
5296 .recover_lock = nfs4_lock_expired,
5297 .establish_clid = nfs41_init_clientid,
5298 .get_clid_cred = nfs4_get_exchange_id_cred,
5300 #endif /* CONFIG_NFS_V4_1 */
5302 struct nfs4_state_maintenance_ops nfs40_state_renewal_ops = {
5303 .sched_state_renewal = nfs4_proc_async_renew,
5304 .get_state_renewal_cred_locked = nfs4_get_renew_cred_locked,
5305 .renew_lease = nfs4_proc_renew,
5308 #if defined(CONFIG_NFS_V4_1)
5309 struct nfs4_state_maintenance_ops nfs41_state_renewal_ops = {
5310 .sched_state_renewal = nfs41_proc_async_sequence,
5311 .get_state_renewal_cred_locked = nfs4_get_machine_cred_locked,
5312 .renew_lease = nfs4_proc_sequence,
5316 static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops = {
5318 .call_sync = _nfs4_call_sync,
5319 .validate_stateid = nfs4_validate_delegation_stateid,
5320 .reboot_recovery_ops = &nfs40_reboot_recovery_ops,
5321 .nograce_recovery_ops = &nfs40_nograce_recovery_ops,
5322 .state_renewal_ops = &nfs40_state_renewal_ops,
5325 #if defined(CONFIG_NFS_V4_1)
5326 static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops = {
5328 .call_sync = _nfs4_call_sync_session,
5329 .validate_stateid = nfs41_validate_delegation_stateid,
5330 .reboot_recovery_ops = &nfs41_reboot_recovery_ops,
5331 .nograce_recovery_ops = &nfs41_nograce_recovery_ops,
5332 .state_renewal_ops = &nfs41_state_renewal_ops,
5336 const struct nfs4_minor_version_ops *nfs_v4_minor_ops[] = {
5337 [0] = &nfs_v4_0_minor_ops,
5338 #if defined(CONFIG_NFS_V4_1)
5339 [1] = &nfs_v4_1_minor_ops,
5343 static const struct inode_operations nfs4_file_inode_operations = {
5344 .permission = nfs_permission,
5345 .getattr = nfs_getattr,
5346 .setattr = nfs_setattr,
5347 .getxattr = nfs4_getxattr,
5348 .setxattr = nfs4_setxattr,
5349 .listxattr = nfs4_listxattr,
5352 const struct nfs_rpc_ops nfs_v4_clientops = {
5353 .version = 4, /* protocol version */
5354 .dentry_ops = &nfs4_dentry_operations,
5355 .dir_inode_ops = &nfs4_dir_inode_operations,
5356 .file_inode_ops = &nfs4_file_inode_operations,
5357 .getroot = nfs4_proc_get_root,
5358 .getattr = nfs4_proc_getattr,
5359 .setattr = nfs4_proc_setattr,
5360 .lookupfh = nfs4_proc_lookupfh,
5361 .lookup = nfs4_proc_lookup,
5362 .access = nfs4_proc_access,
5363 .readlink = nfs4_proc_readlink,
5364 .create = nfs4_proc_create,
5365 .remove = nfs4_proc_remove,
5366 .unlink_setup = nfs4_proc_unlink_setup,
5367 .unlink_done = nfs4_proc_unlink_done,
5368 .rename = nfs4_proc_rename,
5369 .rename_setup = nfs4_proc_rename_setup,
5370 .rename_done = nfs4_proc_rename_done,
5371 .link = nfs4_proc_link,
5372 .symlink = nfs4_proc_symlink,
5373 .mkdir = nfs4_proc_mkdir,
5374 .rmdir = nfs4_proc_remove,
5375 .readdir = nfs4_proc_readdir,
5376 .mknod = nfs4_proc_mknod,
5377 .statfs = nfs4_proc_statfs,
5378 .fsinfo = nfs4_proc_fsinfo,
5379 .pathconf = nfs4_proc_pathconf,
5380 .set_capabilities = nfs4_server_capabilities,
5381 .decode_dirent = nfs4_decode_dirent,
5382 .read_setup = nfs4_proc_read_setup,
5383 .read_done = nfs4_read_done,
5384 .write_setup = nfs4_proc_write_setup,
5385 .write_done = nfs4_write_done,
5386 .commit_setup = nfs4_proc_commit_setup,
5387 .commit_done = nfs4_commit_done,
5388 .lock = nfs4_proc_lock,
5389 .clear_acl_cache = nfs4_zap_acl_attr,
5390 .close_context = nfs4_close_context,
5391 .open_context = nfs4_atomic_open,