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,
135 const u32 nfs4_fs_locations_bitmap[2] = {
137 | FATTR4_WORD0_CHANGE
140 | FATTR4_WORD0_FILEID
141 | FATTR4_WORD0_FS_LOCATIONS,
143 | FATTR4_WORD1_NUMLINKS
145 | FATTR4_WORD1_OWNER_GROUP
146 | FATTR4_WORD1_RAWDEV
147 | FATTR4_WORD1_SPACE_USED
148 | FATTR4_WORD1_TIME_ACCESS
149 | FATTR4_WORD1_TIME_METADATA
150 | FATTR4_WORD1_TIME_MODIFY
151 | FATTR4_WORD1_MOUNTED_ON_FILEID
154 static void nfs4_setup_readdir(u64 cookie, __be32 *verifier, struct dentry *dentry,
155 struct nfs4_readdir_arg *readdir)
159 BUG_ON(readdir->count < 80);
161 readdir->cookie = cookie;
162 memcpy(&readdir->verifier, verifier, sizeof(readdir->verifier));
167 memset(&readdir->verifier, 0, sizeof(readdir->verifier));
172 * NFSv4 servers do not return entries for '.' and '..'
173 * Therefore, we fake these entries here. We let '.'
174 * have cookie 0 and '..' have cookie 1. Note that
175 * when talking to the server, we always send cookie 0
178 start = p = kmap_atomic(*readdir->pages, KM_USER0);
181 *p++ = xdr_one; /* next */
182 *p++ = xdr_zero; /* cookie, first word */
183 *p++ = xdr_one; /* cookie, second word */
184 *p++ = xdr_one; /* entry len */
185 memcpy(p, ".\0\0\0", 4); /* entry */
187 *p++ = xdr_one; /* bitmap length */
188 *p++ = htonl(FATTR4_WORD0_FILEID); /* bitmap */
189 *p++ = htonl(8); /* attribute buffer length */
190 p = xdr_encode_hyper(p, NFS_FILEID(dentry->d_inode));
193 *p++ = xdr_one; /* next */
194 *p++ = xdr_zero; /* cookie, first word */
195 *p++ = xdr_two; /* cookie, second word */
196 *p++ = xdr_two; /* entry len */
197 memcpy(p, "..\0\0", 4); /* entry */
199 *p++ = xdr_one; /* bitmap length */
200 *p++ = htonl(FATTR4_WORD0_FILEID); /* bitmap */
201 *p++ = htonl(8); /* attribute buffer length */
202 p = xdr_encode_hyper(p, NFS_FILEID(dentry->d_parent->d_inode));
204 readdir->pgbase = (char *)p - (char *)start;
205 readdir->count -= readdir->pgbase;
206 kunmap_atomic(start, KM_USER0);
209 static int nfs4_wait_clnt_recover(struct nfs_client *clp)
215 res = wait_on_bit(&clp->cl_state, NFS4CLNT_MANAGER_RUNNING,
216 nfs_wait_bit_killable, TASK_KILLABLE);
220 static int nfs4_delay(struct rpc_clnt *clnt, long *timeout)
227 *timeout = NFS4_POLL_RETRY_MIN;
228 if (*timeout > NFS4_POLL_RETRY_MAX)
229 *timeout = NFS4_POLL_RETRY_MAX;
230 schedule_timeout_killable(*timeout);
231 if (fatal_signal_pending(current))
237 /* This is the error handling routine for processes that are allowed
240 static int nfs4_handle_exception(const struct nfs_server *server, int errorcode, struct nfs4_exception *exception)
242 struct nfs_client *clp = server->nfs_client;
243 struct nfs4_state *state = exception->state;
246 exception->retry = 0;
250 case -NFS4ERR_ADMIN_REVOKED:
251 case -NFS4ERR_BAD_STATEID:
252 case -NFS4ERR_OPENMODE:
255 nfs4_state_mark_reclaim_nograce(clp, state);
256 goto do_state_recovery;
257 case -NFS4ERR_STALE_STATEID:
260 nfs4_state_mark_reclaim_reboot(clp, state);
261 case -NFS4ERR_STALE_CLIENTID:
262 case -NFS4ERR_EXPIRED:
263 goto do_state_recovery;
264 #if defined(CONFIG_NFS_V4_1)
265 case -NFS4ERR_BADSESSION:
266 case -NFS4ERR_BADSLOT:
267 case -NFS4ERR_BAD_HIGH_SLOT:
268 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION:
269 case -NFS4ERR_DEADSESSION:
270 case -NFS4ERR_SEQ_FALSE_RETRY:
271 case -NFS4ERR_SEQ_MISORDERED:
272 dprintk("%s ERROR: %d Reset session\n", __func__,
274 nfs4_schedule_state_recovery(clp);
275 exception->retry = 1;
277 #endif /* defined(CONFIG_NFS_V4_1) */
278 case -NFS4ERR_FILE_OPEN:
279 if (exception->timeout > HZ) {
280 /* We have retried a decent amount, time to
289 ret = nfs4_delay(server->client, &exception->timeout);
292 case -NFS4ERR_OLD_STATEID:
293 exception->retry = 1;
295 /* We failed to handle the error */
296 return nfs4_map_errors(ret);
298 nfs4_schedule_state_recovery(clp);
299 ret = nfs4_wait_clnt_recover(clp);
301 exception->retry = 1;
306 static void do_renew_lease(struct nfs_client *clp, unsigned long timestamp)
308 spin_lock(&clp->cl_lock);
309 if (time_before(clp->cl_last_renewal,timestamp))
310 clp->cl_last_renewal = timestamp;
311 spin_unlock(&clp->cl_lock);
314 static void renew_lease(const struct nfs_server *server, unsigned long timestamp)
316 do_renew_lease(server->nfs_client, timestamp);
319 #if defined(CONFIG_NFS_V4_1)
322 * nfs4_free_slot - free a slot and efficiently update slot table.
324 * freeing a slot is trivially done by clearing its respective bit
326 * If the freed slotid equals highest_used_slotid we want to update it
327 * so that the server would be able to size down the slot table if needed,
328 * otherwise we know that the highest_used_slotid is still in use.
329 * When updating highest_used_slotid there may be "holes" in the bitmap
330 * so we need to scan down from highest_used_slotid to 0 looking for the now
331 * highest slotid in use.
332 * If none found, highest_used_slotid is set to -1.
334 * Must be called while holding tbl->slot_tbl_lock
337 nfs4_free_slot(struct nfs4_slot_table *tbl, u8 free_slotid)
339 int slotid = free_slotid;
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;
382 if (res->sr_slotid == NFS4_MAX_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_slotid);
391 nfs41_check_drain_session_complete(res->sr_session);
392 spin_unlock(&tbl->slot_tbl_lock);
393 res->sr_slotid = NFS4_MAX_SLOT_TABLE;
396 static int nfs41_sequence_done(struct rpc_task *task, struct nfs4_sequence_res *res)
398 unsigned long timestamp;
399 struct nfs4_slot_table *tbl;
400 struct nfs4_slot *slot;
401 struct nfs_client *clp;
404 * sr_status remains 1 if an RPC level error occurred. The server
405 * may or may not have processed the sequence operation..
406 * Proceed as if the server received and processed the sequence
409 if (res->sr_status == 1)
410 res->sr_status = NFS_OK;
412 /* -ERESTARTSYS can result in skipping nfs41_sequence_setup */
413 if (res->sr_slotid == NFS4_MAX_SLOT_TABLE)
416 tbl = &res->sr_session->fc_slot_table;
417 slot = tbl->slots + res->sr_slotid;
419 /* Check the SEQUENCE operation status */
420 switch (res->sr_status) {
422 /* Update the slot's sequence and clientid lease timer */
424 timestamp = res->sr_renewal_time;
425 clp = res->sr_session->clp;
426 do_renew_lease(clp, timestamp);
427 /* Check sequence flags */
428 if (atomic_read(&clp->cl_count) > 1)
429 nfs41_handle_sequence_flag_errors(clp, res->sr_status_flags);
432 /* The server detected a resend of the RPC call and
433 * returned NFS4ERR_DELAY as per Section 2.10.6.2
436 dprintk("%s: slot=%d seq=%d: Operation in progress\n",
437 __func__, res->sr_slotid, slot->seq_nr);
440 /* Just update the slot sequence no. */
444 /* The session may be reset by one of the error handlers. */
445 dprintk("%s: Error %d free the slot \n", __func__, res->sr_status);
446 nfs41_sequence_free_slot(res);
449 if (!rpc_restart_call(task))
451 rpc_delay(task, NFS4_POLL_RETRY_MAX);
455 static int nfs4_sequence_done(struct rpc_task *task,
456 struct nfs4_sequence_res *res)
458 if (res->sr_session == NULL)
460 return nfs41_sequence_done(task, res);
464 * nfs4_find_slot - efficiently look for a free slot
466 * nfs4_find_slot looks for an unset bit in the used_slots bitmap.
467 * If found, we mark the slot as used, update the highest_used_slotid,
468 * and respectively set up the sequence operation args.
469 * The slot number is returned if found, or NFS4_MAX_SLOT_TABLE otherwise.
471 * Note: must be called with under the slot_tbl_lock.
474 nfs4_find_slot(struct nfs4_slot_table *tbl)
477 u8 ret_id = NFS4_MAX_SLOT_TABLE;
478 BUILD_BUG_ON((u8)NFS4_MAX_SLOT_TABLE != (int)NFS4_MAX_SLOT_TABLE);
480 dprintk("--> %s used_slots=%04lx highest_used=%d max_slots=%d\n",
481 __func__, tbl->used_slots[0], tbl->highest_used_slotid,
483 slotid = find_first_zero_bit(tbl->used_slots, tbl->max_slots);
484 if (slotid >= tbl->max_slots)
486 __set_bit(slotid, tbl->used_slots);
487 if (slotid > tbl->highest_used_slotid)
488 tbl->highest_used_slotid = slotid;
491 dprintk("<-- %s used_slots=%04lx highest_used=%d slotid=%d \n",
492 __func__, tbl->used_slots[0], tbl->highest_used_slotid, ret_id);
496 static int nfs41_setup_sequence(struct nfs4_session *session,
497 struct nfs4_sequence_args *args,
498 struct nfs4_sequence_res *res,
500 struct rpc_task *task)
502 struct nfs4_slot *slot;
503 struct nfs4_slot_table *tbl;
506 dprintk("--> %s\n", __func__);
507 /* slot already allocated? */
508 if (res->sr_slotid != NFS4_MAX_SLOT_TABLE)
511 res->sr_slotid = NFS4_MAX_SLOT_TABLE;
512 tbl = &session->fc_slot_table;
514 spin_lock(&tbl->slot_tbl_lock);
515 if (test_bit(NFS4_SESSION_DRAINING, &session->session_state) &&
516 !rpc_task_has_priority(task, RPC_PRIORITY_PRIVILEGED)) {
518 * The state manager will wait until the slot table is empty.
519 * Schedule the reset thread
521 rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL);
522 spin_unlock(&tbl->slot_tbl_lock);
523 dprintk("%s Schedule Session Reset\n", __func__);
527 if (!rpc_queue_empty(&tbl->slot_tbl_waitq) &&
528 !rpc_task_has_priority(task, RPC_PRIORITY_PRIVILEGED)) {
529 rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL);
530 spin_unlock(&tbl->slot_tbl_lock);
531 dprintk("%s enforce FIFO order\n", __func__);
535 slotid = nfs4_find_slot(tbl);
536 if (slotid == NFS4_MAX_SLOT_TABLE) {
537 rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL);
538 spin_unlock(&tbl->slot_tbl_lock);
539 dprintk("<-- %s: no free slots\n", __func__);
542 spin_unlock(&tbl->slot_tbl_lock);
544 rpc_task_set_priority(task, RPC_PRIORITY_NORMAL);
545 slot = tbl->slots + slotid;
546 args->sa_session = session;
547 args->sa_slotid = slotid;
548 args->sa_cache_this = cache_reply;
550 dprintk("<-- %s slotid=%d seqid=%d\n", __func__, slotid, slot->seq_nr);
552 res->sr_session = session;
553 res->sr_slotid = slotid;
554 res->sr_renewal_time = jiffies;
555 res->sr_status_flags = 0;
557 * sr_status is only set in decode_sequence, and so will remain
558 * set to 1 if an rpc level failure occurs.
564 int nfs4_setup_sequence(const struct nfs_server *server,
565 struct nfs4_sequence_args *args,
566 struct nfs4_sequence_res *res,
568 struct rpc_task *task)
570 struct nfs4_session *session = nfs4_get_session(server);
573 if (session == NULL) {
574 args->sa_session = NULL;
575 res->sr_session = NULL;
579 dprintk("--> %s clp %p session %p sr_slotid %d\n",
580 __func__, session->clp, session, res->sr_slotid);
582 ret = nfs41_setup_sequence(session, args, res, cache_reply,
585 dprintk("<-- %s status=%d\n", __func__, ret);
589 struct nfs41_call_sync_data {
590 const struct nfs_server *seq_server;
591 struct nfs4_sequence_args *seq_args;
592 struct nfs4_sequence_res *seq_res;
596 static void nfs41_call_sync_prepare(struct rpc_task *task, void *calldata)
598 struct nfs41_call_sync_data *data = calldata;
600 dprintk("--> %s data->seq_server %p\n", __func__, data->seq_server);
602 if (nfs4_setup_sequence(data->seq_server, data->seq_args,
603 data->seq_res, data->cache_reply, task))
605 rpc_call_start(task);
608 static void nfs41_call_priv_sync_prepare(struct rpc_task *task, void *calldata)
610 rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED);
611 nfs41_call_sync_prepare(task, calldata);
614 static void nfs41_call_sync_done(struct rpc_task *task, void *calldata)
616 struct nfs41_call_sync_data *data = calldata;
618 nfs41_sequence_done(task, data->seq_res);
621 struct rpc_call_ops nfs41_call_sync_ops = {
622 .rpc_call_prepare = nfs41_call_sync_prepare,
623 .rpc_call_done = nfs41_call_sync_done,
626 struct rpc_call_ops nfs41_call_priv_sync_ops = {
627 .rpc_call_prepare = nfs41_call_priv_sync_prepare,
628 .rpc_call_done = nfs41_call_sync_done,
631 static int nfs4_call_sync_sequence(struct nfs_server *server,
632 struct rpc_message *msg,
633 struct nfs4_sequence_args *args,
634 struct nfs4_sequence_res *res,
639 struct rpc_task *task;
640 struct nfs41_call_sync_data data = {
641 .seq_server = server,
644 .cache_reply = cache_reply,
646 struct rpc_task_setup task_setup = {
647 .rpc_client = server->client,
649 .callback_ops = &nfs41_call_sync_ops,
650 .callback_data = &data
653 res->sr_slotid = NFS4_MAX_SLOT_TABLE;
655 task_setup.callback_ops = &nfs41_call_priv_sync_ops;
656 task = rpc_run_task(&task_setup);
660 ret = task->tk_status;
666 int _nfs4_call_sync_session(struct nfs_server *server,
667 struct rpc_message *msg,
668 struct nfs4_sequence_args *args,
669 struct nfs4_sequence_res *res,
672 return nfs4_call_sync_sequence(server, msg, args, res, cache_reply, 0);
676 static int nfs4_sequence_done(struct rpc_task *task,
677 struct nfs4_sequence_res *res)
681 #endif /* CONFIG_NFS_V4_1 */
683 int _nfs4_call_sync(struct nfs_server *server,
684 struct rpc_message *msg,
685 struct nfs4_sequence_args *args,
686 struct nfs4_sequence_res *res,
689 args->sa_session = res->sr_session = NULL;
690 return rpc_call_sync(server->client, msg, 0);
693 #define nfs4_call_sync(server, msg, args, res, cache_reply) \
694 (server)->nfs_client->cl_mvops->call_sync((server), (msg), &(args)->seq_args, \
695 &(res)->seq_res, (cache_reply))
697 static void update_changeattr(struct inode *dir, struct nfs4_change_info *cinfo)
699 struct nfs_inode *nfsi = NFS_I(dir);
701 spin_lock(&dir->i_lock);
702 nfsi->cache_validity |= NFS_INO_INVALID_ATTR|NFS_INO_REVAL_PAGECACHE|NFS_INO_INVALID_DATA;
703 if (!cinfo->atomic || cinfo->before != nfsi->change_attr)
704 nfs_force_lookup_revalidate(dir);
705 nfsi->change_attr = cinfo->after;
706 spin_unlock(&dir->i_lock);
709 struct nfs4_opendata {
711 struct nfs_openargs o_arg;
712 struct nfs_openres o_res;
713 struct nfs_open_confirmargs c_arg;
714 struct nfs_open_confirmres c_res;
715 struct nfs_fattr f_attr;
716 struct nfs_fattr dir_attr;
719 struct nfs4_state_owner *owner;
720 struct nfs4_state *state;
722 unsigned long timestamp;
723 unsigned int rpc_done : 1;
729 static void nfs4_init_opendata_res(struct nfs4_opendata *p)
731 p->o_res.f_attr = &p->f_attr;
732 p->o_res.dir_attr = &p->dir_attr;
733 p->o_res.seqid = p->o_arg.seqid;
734 p->c_res.seqid = p->c_arg.seqid;
735 p->o_res.server = p->o_arg.server;
736 nfs_fattr_init(&p->f_attr);
737 nfs_fattr_init(&p->dir_attr);
738 p->o_res.seq_res.sr_slotid = NFS4_MAX_SLOT_TABLE;
741 static struct nfs4_opendata *nfs4_opendata_alloc(struct path *path,
742 struct nfs4_state_owner *sp, fmode_t fmode, int flags,
743 const struct iattr *attrs,
746 struct dentry *parent = dget_parent(path->dentry);
747 struct inode *dir = parent->d_inode;
748 struct nfs_server *server = NFS_SERVER(dir);
749 struct nfs4_opendata *p;
751 p = kzalloc(sizeof(*p), gfp_mask);
754 p->o_arg.seqid = nfs_alloc_seqid(&sp->so_seqid, gfp_mask);
755 if (p->o_arg.seqid == NULL)
761 atomic_inc(&sp->so_count);
762 p->o_arg.fh = NFS_FH(dir);
763 p->o_arg.open_flags = flags;
764 p->o_arg.fmode = fmode & (FMODE_READ|FMODE_WRITE);
765 p->o_arg.clientid = server->nfs_client->cl_clientid;
766 p->o_arg.id = sp->so_owner_id.id;
767 p->o_arg.name = &p->path.dentry->d_name;
768 p->o_arg.server = server;
769 p->o_arg.bitmask = server->attr_bitmask;
770 p->o_arg.claim = NFS4_OPEN_CLAIM_NULL;
771 if (flags & O_CREAT) {
774 p->o_arg.u.attrs = &p->attrs;
775 memcpy(&p->attrs, attrs, sizeof(p->attrs));
776 s = (u32 *) p->o_arg.u.verifier.data;
780 p->c_arg.fh = &p->o_res.fh;
781 p->c_arg.stateid = &p->o_res.stateid;
782 p->c_arg.seqid = p->o_arg.seqid;
783 nfs4_init_opendata_res(p);
793 static void nfs4_opendata_free(struct kref *kref)
795 struct nfs4_opendata *p = container_of(kref,
796 struct nfs4_opendata, kref);
798 nfs_free_seqid(p->o_arg.seqid);
799 if (p->state != NULL)
800 nfs4_put_open_state(p->state);
801 nfs4_put_state_owner(p->owner);
807 static void nfs4_opendata_put(struct nfs4_opendata *p)
810 kref_put(&p->kref, nfs4_opendata_free);
813 static int nfs4_wait_for_completion_rpc_task(struct rpc_task *task)
817 ret = rpc_wait_for_completion_task(task);
821 static int can_open_cached(struct nfs4_state *state, fmode_t mode, int open_mode)
825 if (open_mode & O_EXCL)
827 switch (mode & (FMODE_READ|FMODE_WRITE)) {
829 ret |= test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0
830 && state->n_rdonly != 0;
833 ret |= test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0
834 && state->n_wronly != 0;
836 case FMODE_READ|FMODE_WRITE:
837 ret |= test_bit(NFS_O_RDWR_STATE, &state->flags) != 0
838 && state->n_rdwr != 0;
844 static int can_open_delegated(struct nfs_delegation *delegation, fmode_t fmode)
846 if ((delegation->type & fmode) != fmode)
848 if (test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags))
850 nfs_mark_delegation_referenced(delegation);
854 static void update_open_stateflags(struct nfs4_state *state, fmode_t fmode)
863 case FMODE_READ|FMODE_WRITE:
866 nfs4_state_set_mode_locked(state, state->state | fmode);
869 static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode)
871 if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0)
872 memcpy(state->stateid.data, stateid->data, sizeof(state->stateid.data));
873 memcpy(state->open_stateid.data, stateid->data, sizeof(state->open_stateid.data));
876 set_bit(NFS_O_RDONLY_STATE, &state->flags);
879 set_bit(NFS_O_WRONLY_STATE, &state->flags);
881 case FMODE_READ|FMODE_WRITE:
882 set_bit(NFS_O_RDWR_STATE, &state->flags);
886 static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode)
888 write_seqlock(&state->seqlock);
889 nfs_set_open_stateid_locked(state, stateid, fmode);
890 write_sequnlock(&state->seqlock);
893 static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, fmode_t fmode)
896 * Protect the call to nfs4_state_set_mode_locked and
897 * serialise the stateid update
899 write_seqlock(&state->seqlock);
900 if (deleg_stateid != NULL) {
901 memcpy(state->stateid.data, deleg_stateid->data, sizeof(state->stateid.data));
902 set_bit(NFS_DELEGATED_STATE, &state->flags);
904 if (open_stateid != NULL)
905 nfs_set_open_stateid_locked(state, open_stateid, fmode);
906 write_sequnlock(&state->seqlock);
907 spin_lock(&state->owner->so_lock);
908 update_open_stateflags(state, fmode);
909 spin_unlock(&state->owner->so_lock);
912 static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, fmode_t fmode)
914 struct nfs_inode *nfsi = NFS_I(state->inode);
915 struct nfs_delegation *deleg_cur;
918 fmode &= (FMODE_READ|FMODE_WRITE);
921 deleg_cur = rcu_dereference(nfsi->delegation);
922 if (deleg_cur == NULL)
925 spin_lock(&deleg_cur->lock);
926 if (nfsi->delegation != deleg_cur ||
927 (deleg_cur->type & fmode) != fmode)
928 goto no_delegation_unlock;
930 if (delegation == NULL)
931 delegation = &deleg_cur->stateid;
932 else if (memcmp(deleg_cur->stateid.data, delegation->data, NFS4_STATEID_SIZE) != 0)
933 goto no_delegation_unlock;
935 nfs_mark_delegation_referenced(deleg_cur);
936 __update_open_stateid(state, open_stateid, &deleg_cur->stateid, fmode);
938 no_delegation_unlock:
939 spin_unlock(&deleg_cur->lock);
943 if (!ret && open_stateid != NULL) {
944 __update_open_stateid(state, open_stateid, NULL, fmode);
952 static void nfs4_return_incompatible_delegation(struct inode *inode, fmode_t fmode)
954 struct nfs_delegation *delegation;
957 delegation = rcu_dereference(NFS_I(inode)->delegation);
958 if (delegation == NULL || (delegation->type & fmode) == fmode) {
963 nfs_inode_return_delegation(inode);
966 static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
968 struct nfs4_state *state = opendata->state;
969 struct nfs_inode *nfsi = NFS_I(state->inode);
970 struct nfs_delegation *delegation;
971 int open_mode = opendata->o_arg.open_flags & O_EXCL;
972 fmode_t fmode = opendata->o_arg.fmode;
973 nfs4_stateid stateid;
977 if (can_open_cached(state, fmode, open_mode)) {
978 spin_lock(&state->owner->so_lock);
979 if (can_open_cached(state, fmode, open_mode)) {
980 update_open_stateflags(state, fmode);
981 spin_unlock(&state->owner->so_lock);
982 goto out_return_state;
984 spin_unlock(&state->owner->so_lock);
987 delegation = rcu_dereference(nfsi->delegation);
988 if (delegation == NULL ||
989 !can_open_delegated(delegation, fmode)) {
993 /* Save the delegation */
994 memcpy(stateid.data, delegation->stateid.data, sizeof(stateid.data));
996 ret = nfs_may_open(state->inode, state->owner->so_cred, open_mode);
1001 /* Try to update the stateid using the delegation */
1002 if (update_open_stateid(state, NULL, &stateid, fmode))
1003 goto out_return_state;
1006 return ERR_PTR(ret);
1008 atomic_inc(&state->count);
1012 static struct nfs4_state *nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data)
1014 struct inode *inode;
1015 struct nfs4_state *state = NULL;
1016 struct nfs_delegation *delegation;
1019 if (!data->rpc_done) {
1020 state = nfs4_try_open_cached(data);
1025 if (!(data->f_attr.valid & NFS_ATTR_FATTR))
1027 inode = nfs_fhget(data->dir->d_sb, &data->o_res.fh, &data->f_attr);
1028 ret = PTR_ERR(inode);
1032 state = nfs4_get_open_state(inode, data->owner);
1035 if (data->o_res.delegation_type != 0) {
1036 int delegation_flags = 0;
1039 delegation = rcu_dereference(NFS_I(inode)->delegation);
1041 delegation_flags = delegation->flags;
1043 if ((delegation_flags & 1UL<<NFS_DELEGATION_NEED_RECLAIM) == 0)
1044 nfs_inode_set_delegation(state->inode,
1045 data->owner->so_cred,
1048 nfs_inode_reclaim_delegation(state->inode,
1049 data->owner->so_cred,
1053 update_open_stateid(state, &data->o_res.stateid, NULL,
1061 return ERR_PTR(ret);
1064 static struct nfs_open_context *nfs4_state_find_open_context(struct nfs4_state *state)
1066 struct nfs_inode *nfsi = NFS_I(state->inode);
1067 struct nfs_open_context *ctx;
1069 spin_lock(&state->inode->i_lock);
1070 list_for_each_entry(ctx, &nfsi->open_files, list) {
1071 if (ctx->state != state)
1073 get_nfs_open_context(ctx);
1074 spin_unlock(&state->inode->i_lock);
1077 spin_unlock(&state->inode->i_lock);
1078 return ERR_PTR(-ENOENT);
1081 static struct nfs4_opendata *nfs4_open_recoverdata_alloc(struct nfs_open_context *ctx, struct nfs4_state *state)
1083 struct nfs4_opendata *opendata;
1085 opendata = nfs4_opendata_alloc(&ctx->path, state->owner, 0, 0, NULL, GFP_NOFS);
1086 if (opendata == NULL)
1087 return ERR_PTR(-ENOMEM);
1088 opendata->state = state;
1089 atomic_inc(&state->count);
1093 static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, fmode_t fmode, struct nfs4_state **res)
1095 struct nfs4_state *newstate;
1098 opendata->o_arg.open_flags = 0;
1099 opendata->o_arg.fmode = fmode;
1100 memset(&opendata->o_res, 0, sizeof(opendata->o_res));
1101 memset(&opendata->c_res, 0, sizeof(opendata->c_res));
1102 nfs4_init_opendata_res(opendata);
1103 ret = _nfs4_recover_proc_open(opendata);
1106 newstate = nfs4_opendata_to_nfs4_state(opendata);
1107 if (IS_ERR(newstate))
1108 return PTR_ERR(newstate);
1109 nfs4_close_state(&opendata->path, newstate, fmode);
1114 static int nfs4_open_recover(struct nfs4_opendata *opendata, struct nfs4_state *state)
1116 struct nfs4_state *newstate;
1119 /* memory barrier prior to reading state->n_* */
1120 clear_bit(NFS_DELEGATED_STATE, &state->flags);
1122 if (state->n_rdwr != 0) {
1123 ret = nfs4_open_recover_helper(opendata, FMODE_READ|FMODE_WRITE, &newstate);
1126 if (newstate != state)
1129 if (state->n_wronly != 0) {
1130 ret = nfs4_open_recover_helper(opendata, FMODE_WRITE, &newstate);
1133 if (newstate != state)
1136 if (state->n_rdonly != 0) {
1137 ret = nfs4_open_recover_helper(opendata, FMODE_READ, &newstate);
1140 if (newstate != state)
1144 * We may have performed cached opens for all three recoveries.
1145 * Check if we need to update the current stateid.
1147 if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0 &&
1148 memcmp(state->stateid.data, state->open_stateid.data, sizeof(state->stateid.data)) != 0) {
1149 write_seqlock(&state->seqlock);
1150 if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0)
1151 memcpy(state->stateid.data, state->open_stateid.data, sizeof(state->stateid.data));
1152 write_sequnlock(&state->seqlock);
1159 * reclaim state on the server after a reboot.
1161 static int _nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state)
1163 struct nfs_delegation *delegation;
1164 struct nfs4_opendata *opendata;
1165 fmode_t delegation_type = 0;
1168 opendata = nfs4_open_recoverdata_alloc(ctx, state);
1169 if (IS_ERR(opendata))
1170 return PTR_ERR(opendata);
1171 opendata->o_arg.claim = NFS4_OPEN_CLAIM_PREVIOUS;
1172 opendata->o_arg.fh = NFS_FH(state->inode);
1174 delegation = rcu_dereference(NFS_I(state->inode)->delegation);
1175 if (delegation != NULL && test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags) != 0)
1176 delegation_type = delegation->type;
1178 opendata->o_arg.u.delegation_type = delegation_type;
1179 status = nfs4_open_recover(opendata, state);
1180 nfs4_opendata_put(opendata);
1184 static int nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state)
1186 struct nfs_server *server = NFS_SERVER(state->inode);
1187 struct nfs4_exception exception = { };
1190 err = _nfs4_do_open_reclaim(ctx, state);
1191 if (err != -NFS4ERR_DELAY && err != -EKEYEXPIRED)
1193 nfs4_handle_exception(server, err, &exception);
1194 } while (exception.retry);
1198 static int nfs4_open_reclaim(struct nfs4_state_owner *sp, struct nfs4_state *state)
1200 struct nfs_open_context *ctx;
1203 ctx = nfs4_state_find_open_context(state);
1205 return PTR_ERR(ctx);
1206 ret = nfs4_do_open_reclaim(ctx, state);
1207 put_nfs_open_context(ctx);
1211 static int _nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state *state, const nfs4_stateid *stateid)
1213 struct nfs4_opendata *opendata;
1216 opendata = nfs4_open_recoverdata_alloc(ctx, state);
1217 if (IS_ERR(opendata))
1218 return PTR_ERR(opendata);
1219 opendata->o_arg.claim = NFS4_OPEN_CLAIM_DELEGATE_CUR;
1220 memcpy(opendata->o_arg.u.delegation.data, stateid->data,
1221 sizeof(opendata->o_arg.u.delegation.data));
1222 ret = nfs4_open_recover(opendata, state);
1223 nfs4_opendata_put(opendata);
1227 int nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state *state, const nfs4_stateid *stateid)
1229 struct nfs4_exception exception = { };
1230 struct nfs_server *server = NFS_SERVER(state->inode);
1233 err = _nfs4_open_delegation_recall(ctx, state, stateid);
1239 case -NFS4ERR_BADSESSION:
1240 case -NFS4ERR_BADSLOT:
1241 case -NFS4ERR_BAD_HIGH_SLOT:
1242 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION:
1243 case -NFS4ERR_DEADSESSION:
1244 nfs4_schedule_state_recovery(
1245 server->nfs_client);
1247 case -NFS4ERR_STALE_CLIENTID:
1248 case -NFS4ERR_STALE_STATEID:
1249 case -NFS4ERR_EXPIRED:
1250 /* Don't recall a delegation if it was lost */
1251 nfs4_schedule_state_recovery(server->nfs_client);
1255 * The show must go on: exit, but mark the
1256 * stateid as needing recovery.
1258 case -NFS4ERR_ADMIN_REVOKED:
1259 case -NFS4ERR_BAD_STATEID:
1260 nfs4_state_mark_reclaim_nograce(server->nfs_client, state);
1265 err = nfs4_handle_exception(server, err, &exception);
1266 } while (exception.retry);
1271 static void nfs4_open_confirm_done(struct rpc_task *task, void *calldata)
1273 struct nfs4_opendata *data = calldata;
1275 data->rpc_status = task->tk_status;
1276 if (data->rpc_status == 0) {
1277 memcpy(data->o_res.stateid.data, data->c_res.stateid.data,
1278 sizeof(data->o_res.stateid.data));
1279 nfs_confirm_seqid(&data->owner->so_seqid, 0);
1280 renew_lease(data->o_res.server, data->timestamp);
1285 static void nfs4_open_confirm_release(void *calldata)
1287 struct nfs4_opendata *data = calldata;
1288 struct nfs4_state *state = NULL;
1290 /* If this request hasn't been cancelled, do nothing */
1291 if (data->cancelled == 0)
1293 /* In case of error, no cleanup! */
1294 if (!data->rpc_done)
1296 state = nfs4_opendata_to_nfs4_state(data);
1298 nfs4_close_state(&data->path, state, data->o_arg.fmode);
1300 nfs4_opendata_put(data);
1303 static const struct rpc_call_ops nfs4_open_confirm_ops = {
1304 .rpc_call_done = nfs4_open_confirm_done,
1305 .rpc_release = nfs4_open_confirm_release,
1309 * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata
1311 static int _nfs4_proc_open_confirm(struct nfs4_opendata *data)
1313 struct nfs_server *server = NFS_SERVER(data->dir->d_inode);
1314 struct rpc_task *task;
1315 struct rpc_message msg = {
1316 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_CONFIRM],
1317 .rpc_argp = &data->c_arg,
1318 .rpc_resp = &data->c_res,
1319 .rpc_cred = data->owner->so_cred,
1321 struct rpc_task_setup task_setup_data = {
1322 .rpc_client = server->client,
1323 .rpc_message = &msg,
1324 .callback_ops = &nfs4_open_confirm_ops,
1325 .callback_data = data,
1326 .workqueue = nfsiod_workqueue,
1327 .flags = RPC_TASK_ASYNC,
1331 kref_get(&data->kref);
1333 data->rpc_status = 0;
1334 data->timestamp = jiffies;
1335 task = rpc_run_task(&task_setup_data);
1337 return PTR_ERR(task);
1338 status = nfs4_wait_for_completion_rpc_task(task);
1340 data->cancelled = 1;
1343 status = data->rpc_status;
1348 static void nfs4_open_prepare(struct rpc_task *task, void *calldata)
1350 struct nfs4_opendata *data = calldata;
1351 struct nfs4_state_owner *sp = data->owner;
1353 if (nfs_wait_on_sequence(data->o_arg.seqid, task) != 0)
1356 * Check if we still need to send an OPEN call, or if we can use
1357 * a delegation instead.
1359 if (data->state != NULL) {
1360 struct nfs_delegation *delegation;
1362 if (can_open_cached(data->state, data->o_arg.fmode, data->o_arg.open_flags))
1365 delegation = rcu_dereference(NFS_I(data->state->inode)->delegation);
1366 if (delegation != NULL &&
1367 test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags) == 0) {
1373 /* Update sequence id. */
1374 data->o_arg.id = sp->so_owner_id.id;
1375 data->o_arg.clientid = sp->so_server->nfs_client->cl_clientid;
1376 if (data->o_arg.claim == NFS4_OPEN_CLAIM_PREVIOUS) {
1377 task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_NOATTR];
1378 nfs_copy_fh(&data->o_res.fh, data->o_arg.fh);
1380 data->timestamp = jiffies;
1381 if (nfs4_setup_sequence(data->o_arg.server,
1382 &data->o_arg.seq_args,
1383 &data->o_res.seq_res, 1, task))
1385 rpc_call_start(task);
1388 task->tk_action = NULL;
1392 static void nfs4_recover_open_prepare(struct rpc_task *task, void *calldata)
1394 rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED);
1395 nfs4_open_prepare(task, calldata);
1398 static void nfs4_open_done(struct rpc_task *task, void *calldata)
1400 struct nfs4_opendata *data = calldata;
1402 data->rpc_status = task->tk_status;
1404 if (!nfs4_sequence_done(task, &data->o_res.seq_res))
1407 if (task->tk_status == 0) {
1408 switch (data->o_res.f_attr->mode & S_IFMT) {
1412 data->rpc_status = -ELOOP;
1415 data->rpc_status = -EISDIR;
1418 data->rpc_status = -ENOTDIR;
1420 renew_lease(data->o_res.server, data->timestamp);
1421 if (!(data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM))
1422 nfs_confirm_seqid(&data->owner->so_seqid, 0);
1427 static void nfs4_open_release(void *calldata)
1429 struct nfs4_opendata *data = calldata;
1430 struct nfs4_state *state = NULL;
1432 /* If this request hasn't been cancelled, do nothing */
1433 if (data->cancelled == 0)
1435 /* In case of error, no cleanup! */
1436 if (data->rpc_status != 0 || !data->rpc_done)
1438 /* In case we need an open_confirm, no cleanup! */
1439 if (data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM)
1441 state = nfs4_opendata_to_nfs4_state(data);
1443 nfs4_close_state(&data->path, state, data->o_arg.fmode);
1445 nfs4_opendata_put(data);
1448 static const struct rpc_call_ops nfs4_open_ops = {
1449 .rpc_call_prepare = nfs4_open_prepare,
1450 .rpc_call_done = nfs4_open_done,
1451 .rpc_release = nfs4_open_release,
1454 static const struct rpc_call_ops nfs4_recover_open_ops = {
1455 .rpc_call_prepare = nfs4_recover_open_prepare,
1456 .rpc_call_done = nfs4_open_done,
1457 .rpc_release = nfs4_open_release,
1460 static int nfs4_run_open_task(struct nfs4_opendata *data, int isrecover)
1462 struct inode *dir = data->dir->d_inode;
1463 struct nfs_server *server = NFS_SERVER(dir);
1464 struct nfs_openargs *o_arg = &data->o_arg;
1465 struct nfs_openres *o_res = &data->o_res;
1466 struct rpc_task *task;
1467 struct rpc_message msg = {
1468 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN],
1471 .rpc_cred = data->owner->so_cred,
1473 struct rpc_task_setup task_setup_data = {
1474 .rpc_client = server->client,
1475 .rpc_message = &msg,
1476 .callback_ops = &nfs4_open_ops,
1477 .callback_data = data,
1478 .workqueue = nfsiod_workqueue,
1479 .flags = RPC_TASK_ASYNC,
1483 kref_get(&data->kref);
1485 data->rpc_status = 0;
1486 data->cancelled = 0;
1488 task_setup_data.callback_ops = &nfs4_recover_open_ops;
1489 task = rpc_run_task(&task_setup_data);
1491 return PTR_ERR(task);
1492 status = nfs4_wait_for_completion_rpc_task(task);
1494 data->cancelled = 1;
1497 status = data->rpc_status;
1503 static int _nfs4_recover_proc_open(struct nfs4_opendata *data)
1505 struct inode *dir = data->dir->d_inode;
1506 struct nfs_openres *o_res = &data->o_res;
1509 status = nfs4_run_open_task(data, 1);
1510 if (status != 0 || !data->rpc_done)
1513 nfs_refresh_inode(dir, o_res->dir_attr);
1515 if (o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) {
1516 status = _nfs4_proc_open_confirm(data);
1525 * Note: On error, nfs4_proc_open will free the struct nfs4_opendata
1527 static int _nfs4_proc_open(struct nfs4_opendata *data)
1529 struct inode *dir = data->dir->d_inode;
1530 struct nfs_server *server = NFS_SERVER(dir);
1531 struct nfs_openargs *o_arg = &data->o_arg;
1532 struct nfs_openres *o_res = &data->o_res;
1535 status = nfs4_run_open_task(data, 0);
1536 if (status != 0 || !data->rpc_done)
1539 if (o_arg->open_flags & O_CREAT) {
1540 update_changeattr(dir, &o_res->cinfo);
1541 nfs_post_op_update_inode(dir, o_res->dir_attr);
1543 nfs_refresh_inode(dir, o_res->dir_attr);
1544 if ((o_res->rflags & NFS4_OPEN_RESULT_LOCKTYPE_POSIX) == 0)
1545 server->caps &= ~NFS_CAP_POSIX_LOCK;
1546 if(o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) {
1547 status = _nfs4_proc_open_confirm(data);
1551 if (!(o_res->f_attr->valid & NFS_ATTR_FATTR))
1552 _nfs4_proc_getattr(server, &o_res->fh, o_res->f_attr);
1556 static int nfs4_recover_expired_lease(struct nfs_server *server)
1558 struct nfs_client *clp = server->nfs_client;
1562 for (loop = NFS4_MAX_LOOP_ON_RECOVER; loop != 0; loop--) {
1563 ret = nfs4_wait_clnt_recover(clp);
1566 if (!test_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state) &&
1567 !test_bit(NFS4CLNT_CHECK_LEASE,&clp->cl_state))
1569 nfs4_schedule_state_recovery(clp);
1577 * reclaim state on the server after a network partition.
1578 * Assumes caller holds the appropriate lock
1580 static int _nfs4_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state)
1582 struct nfs4_opendata *opendata;
1585 opendata = nfs4_open_recoverdata_alloc(ctx, state);
1586 if (IS_ERR(opendata))
1587 return PTR_ERR(opendata);
1588 ret = nfs4_open_recover(opendata, state);
1590 d_drop(ctx->path.dentry);
1591 nfs4_opendata_put(opendata);
1595 static int nfs4_do_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state)
1597 struct nfs_server *server = NFS_SERVER(state->inode);
1598 struct nfs4_exception exception = { };
1602 err = _nfs4_open_expired(ctx, state);
1606 case -NFS4ERR_GRACE:
1607 case -NFS4ERR_DELAY:
1609 nfs4_handle_exception(server, err, &exception);
1612 } while (exception.retry);
1617 static int nfs4_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state)
1619 struct nfs_open_context *ctx;
1622 ctx = nfs4_state_find_open_context(state);
1624 return PTR_ERR(ctx);
1625 ret = nfs4_do_open_expired(ctx, state);
1626 put_nfs_open_context(ctx);
1631 * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-*
1632 * fields corresponding to attributes that were used to store the verifier.
1633 * Make sure we clobber those fields in the later setattr call
1635 static inline void nfs4_exclusive_attrset(struct nfs4_opendata *opendata, struct iattr *sattr)
1637 if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_ACCESS) &&
1638 !(sattr->ia_valid & ATTR_ATIME_SET))
1639 sattr->ia_valid |= ATTR_ATIME;
1641 if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_MODIFY) &&
1642 !(sattr->ia_valid & ATTR_MTIME_SET))
1643 sattr->ia_valid |= ATTR_MTIME;
1647 * Returns a referenced nfs4_state
1649 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)
1651 struct nfs4_state_owner *sp;
1652 struct nfs4_state *state = NULL;
1653 struct nfs_server *server = NFS_SERVER(dir);
1654 struct nfs4_opendata *opendata;
1657 /* Protect against reboot recovery conflicts */
1659 if (!(sp = nfs4_get_state_owner(server, cred))) {
1660 dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n");
1663 status = nfs4_recover_expired_lease(server);
1665 goto err_put_state_owner;
1666 if (path->dentry->d_inode != NULL)
1667 nfs4_return_incompatible_delegation(path->dentry->d_inode, fmode);
1669 opendata = nfs4_opendata_alloc(path, sp, fmode, flags, sattr, GFP_KERNEL);
1670 if (opendata == NULL)
1671 goto err_put_state_owner;
1673 if (path->dentry->d_inode != NULL)
1674 opendata->state = nfs4_get_open_state(path->dentry->d_inode, sp);
1676 status = _nfs4_proc_open(opendata);
1678 goto err_opendata_put;
1680 state = nfs4_opendata_to_nfs4_state(opendata);
1681 status = PTR_ERR(state);
1683 goto err_opendata_put;
1684 if (server->caps & NFS_CAP_POSIX_LOCK)
1685 set_bit(NFS_STATE_POSIX_LOCKS, &state->flags);
1687 if (opendata->o_arg.open_flags & O_EXCL) {
1688 nfs4_exclusive_attrset(opendata, sattr);
1690 nfs_fattr_init(opendata->o_res.f_attr);
1691 status = nfs4_do_setattr(state->inode, cred,
1692 opendata->o_res.f_attr, sattr,
1695 nfs_setattr_update_inode(state->inode, sattr);
1696 nfs_post_op_update_inode(state->inode, opendata->o_res.f_attr);
1698 nfs4_opendata_put(opendata);
1699 nfs4_put_state_owner(sp);
1703 nfs4_opendata_put(opendata);
1704 err_put_state_owner:
1705 nfs4_put_state_owner(sp);
1712 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)
1714 struct nfs4_exception exception = { };
1715 struct nfs4_state *res;
1719 status = _nfs4_do_open(dir, path, fmode, flags, sattr, cred, &res);
1722 /* NOTE: BAD_SEQID means the server and client disagree about the
1723 * book-keeping w.r.t. state-changing operations
1724 * (OPEN/CLOSE/LOCK/LOCKU...)
1725 * It is actually a sign of a bug on the client or on the server.
1727 * If we receive a BAD_SEQID error in the particular case of
1728 * doing an OPEN, we assume that nfs_increment_open_seqid() will
1729 * have unhashed the old state_owner for us, and that we can
1730 * therefore safely retry using a new one. We should still warn
1731 * the user though...
1733 if (status == -NFS4ERR_BAD_SEQID) {
1734 printk(KERN_WARNING "NFS: v4 server %s "
1735 " returned a bad sequence-id error!\n",
1736 NFS_SERVER(dir)->nfs_client->cl_hostname);
1737 exception.retry = 1;
1741 * BAD_STATEID on OPEN means that the server cancelled our
1742 * state before it received the OPEN_CONFIRM.
1743 * Recover by retrying the request as per the discussion
1744 * on Page 181 of RFC3530.
1746 if (status == -NFS4ERR_BAD_STATEID) {
1747 exception.retry = 1;
1750 if (status == -EAGAIN) {
1751 /* We must have found a delegation */
1752 exception.retry = 1;
1755 res = ERR_PTR(nfs4_handle_exception(NFS_SERVER(dir),
1756 status, &exception));
1757 } while (exception.retry);
1761 static int _nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred,
1762 struct nfs_fattr *fattr, struct iattr *sattr,
1763 struct nfs4_state *state)
1765 struct nfs_server *server = NFS_SERVER(inode);
1766 struct nfs_setattrargs arg = {
1767 .fh = NFS_FH(inode),
1770 .bitmask = server->attr_bitmask,
1772 struct nfs_setattrres res = {
1776 struct rpc_message msg = {
1777 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETATTR],
1782 unsigned long timestamp = jiffies;
1785 nfs_fattr_init(fattr);
1787 if (nfs4_copy_delegation_stateid(&arg.stateid, inode)) {
1788 /* Use that stateid */
1789 } else if (state != NULL) {
1790 nfs4_copy_stateid(&arg.stateid, state, current->files, current->tgid);
1792 memcpy(&arg.stateid, &zero_stateid, sizeof(arg.stateid));
1794 status = nfs4_call_sync(server, &msg, &arg, &res, 1);
1795 if (status == 0 && state != NULL)
1796 renew_lease(server, timestamp);
1800 static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred,
1801 struct nfs_fattr *fattr, struct iattr *sattr,
1802 struct nfs4_state *state)
1804 struct nfs_server *server = NFS_SERVER(inode);
1805 struct nfs4_exception exception = { };
1808 err = nfs4_handle_exception(server,
1809 _nfs4_do_setattr(inode, cred, fattr, sattr, state),
1811 } while (exception.retry);
1815 struct nfs4_closedata {
1817 struct inode *inode;
1818 struct nfs4_state *state;
1819 struct nfs_closeargs arg;
1820 struct nfs_closeres res;
1821 struct nfs_fattr fattr;
1822 unsigned long timestamp;
1825 static void nfs4_free_closedata(void *data)
1827 struct nfs4_closedata *calldata = data;
1828 struct nfs4_state_owner *sp = calldata->state->owner;
1830 nfs4_put_open_state(calldata->state);
1831 nfs_free_seqid(calldata->arg.seqid);
1832 nfs4_put_state_owner(sp);
1833 path_put(&calldata->path);
1837 static void nfs4_close_clear_stateid_flags(struct nfs4_state *state,
1840 spin_lock(&state->owner->so_lock);
1841 if (!(fmode & FMODE_READ))
1842 clear_bit(NFS_O_RDONLY_STATE, &state->flags);
1843 if (!(fmode & FMODE_WRITE))
1844 clear_bit(NFS_O_WRONLY_STATE, &state->flags);
1845 clear_bit(NFS_O_RDWR_STATE, &state->flags);
1846 spin_unlock(&state->owner->so_lock);
1849 static void nfs4_close_done(struct rpc_task *task, void *data)
1851 struct nfs4_closedata *calldata = data;
1852 struct nfs4_state *state = calldata->state;
1853 struct nfs_server *server = NFS_SERVER(calldata->inode);
1855 if (!nfs4_sequence_done(task, &calldata->res.seq_res))
1857 /* hmm. we are done with the inode, and in the process of freeing
1858 * the state_owner. we keep this around to process errors
1860 switch (task->tk_status) {
1862 nfs_set_open_stateid(state, &calldata->res.stateid, 0);
1863 renew_lease(server, calldata->timestamp);
1864 nfs4_close_clear_stateid_flags(state,
1865 calldata->arg.fmode);
1867 case -NFS4ERR_STALE_STATEID:
1868 case -NFS4ERR_OLD_STATEID:
1869 case -NFS4ERR_BAD_STATEID:
1870 case -NFS4ERR_EXPIRED:
1871 if (calldata->arg.fmode == 0)
1874 if (nfs4_async_handle_error(task, server, state) == -EAGAIN)
1875 rpc_restart_call_prepare(task);
1877 nfs_release_seqid(calldata->arg.seqid);
1878 nfs_refresh_inode(calldata->inode, calldata->res.fattr);
1881 static void nfs4_close_prepare(struct rpc_task *task, void *data)
1883 struct nfs4_closedata *calldata = data;
1884 struct nfs4_state *state = calldata->state;
1887 if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0)
1890 task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE];
1891 calldata->arg.fmode = FMODE_READ|FMODE_WRITE;
1892 spin_lock(&state->owner->so_lock);
1893 /* Calculate the change in open mode */
1894 if (state->n_rdwr == 0) {
1895 if (state->n_rdonly == 0) {
1896 call_close |= test_bit(NFS_O_RDONLY_STATE, &state->flags);
1897 call_close |= test_bit(NFS_O_RDWR_STATE, &state->flags);
1898 calldata->arg.fmode &= ~FMODE_READ;
1900 if (state->n_wronly == 0) {
1901 call_close |= test_bit(NFS_O_WRONLY_STATE, &state->flags);
1902 call_close |= test_bit(NFS_O_RDWR_STATE, &state->flags);
1903 calldata->arg.fmode &= ~FMODE_WRITE;
1906 spin_unlock(&state->owner->so_lock);
1909 /* Note: exit _without_ calling nfs4_close_done */
1910 task->tk_action = NULL;
1914 if (calldata->arg.fmode == 0)
1915 task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE];
1917 nfs_fattr_init(calldata->res.fattr);
1918 calldata->timestamp = jiffies;
1919 if (nfs4_setup_sequence(NFS_SERVER(calldata->inode),
1920 &calldata->arg.seq_args, &calldata->res.seq_res,
1923 rpc_call_start(task);
1926 static const struct rpc_call_ops nfs4_close_ops = {
1927 .rpc_call_prepare = nfs4_close_prepare,
1928 .rpc_call_done = nfs4_close_done,
1929 .rpc_release = nfs4_free_closedata,
1933 * It is possible for data to be read/written from a mem-mapped file
1934 * after the sys_close call (which hits the vfs layer as a flush).
1935 * This means that we can't safely call nfsv4 close on a file until
1936 * the inode is cleared. This in turn means that we are not good
1937 * NFSv4 citizens - we do not indicate to the server to update the file's
1938 * share state even when we are done with one of the three share
1939 * stateid's in the inode.
1941 * NOTE: Caller must be holding the sp->so_owner semaphore!
1943 int nfs4_do_close(struct path *path, struct nfs4_state *state, gfp_t gfp_mask, int wait)
1945 struct nfs_server *server = NFS_SERVER(state->inode);
1946 struct nfs4_closedata *calldata;
1947 struct nfs4_state_owner *sp = state->owner;
1948 struct rpc_task *task;
1949 struct rpc_message msg = {
1950 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE],
1951 .rpc_cred = state->owner->so_cred,
1953 struct rpc_task_setup task_setup_data = {
1954 .rpc_client = server->client,
1955 .rpc_message = &msg,
1956 .callback_ops = &nfs4_close_ops,
1957 .workqueue = nfsiod_workqueue,
1958 .flags = RPC_TASK_ASYNC,
1960 int status = -ENOMEM;
1962 calldata = kzalloc(sizeof(*calldata), gfp_mask);
1963 if (calldata == NULL)
1965 calldata->inode = state->inode;
1966 calldata->state = state;
1967 calldata->arg.fh = NFS_FH(state->inode);
1968 calldata->arg.stateid = &state->open_stateid;
1969 /* Serialization for the sequence id */
1970 calldata->arg.seqid = nfs_alloc_seqid(&state->owner->so_seqid, gfp_mask);
1971 if (calldata->arg.seqid == NULL)
1972 goto out_free_calldata;
1973 calldata->arg.fmode = 0;
1974 calldata->arg.bitmask = server->cache_consistency_bitmask;
1975 calldata->res.fattr = &calldata->fattr;
1976 calldata->res.seqid = calldata->arg.seqid;
1977 calldata->res.server = server;
1978 calldata->res.seq_res.sr_slotid = NFS4_MAX_SLOT_TABLE;
1980 calldata->path = *path;
1982 msg.rpc_argp = &calldata->arg,
1983 msg.rpc_resp = &calldata->res,
1984 task_setup_data.callback_data = calldata;
1985 task = rpc_run_task(&task_setup_data);
1987 return PTR_ERR(task);
1990 status = rpc_wait_for_completion_task(task);
1996 nfs4_put_open_state(state);
1997 nfs4_put_state_owner(sp);
2001 static struct inode *
2002 nfs4_atomic_open(struct inode *dir, struct nfs_open_context *ctx, int open_flags, struct iattr *attr)
2004 struct nfs4_state *state;
2006 /* Protect against concurrent sillydeletes */
2007 state = nfs4_do_open(dir, &ctx->path, ctx->mode, open_flags, attr, ctx->cred);
2009 return ERR_CAST(state);
2011 return igrab(state->inode);
2014 static void nfs4_close_context(struct nfs_open_context *ctx, int is_sync)
2016 if (ctx->state == NULL)
2019 nfs4_close_sync(&ctx->path, ctx->state, ctx->mode);
2021 nfs4_close_state(&ctx->path, ctx->state, ctx->mode);
2024 static int _nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle)
2026 struct nfs4_server_caps_arg args = {
2029 struct nfs4_server_caps_res res = {};
2030 struct rpc_message msg = {
2031 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SERVER_CAPS],
2037 status = nfs4_call_sync(server, &msg, &args, &res, 0);
2039 memcpy(server->attr_bitmask, res.attr_bitmask, sizeof(server->attr_bitmask));
2040 server->caps &= ~(NFS_CAP_ACLS|NFS_CAP_HARDLINKS|
2041 NFS_CAP_SYMLINKS|NFS_CAP_FILEID|
2042 NFS_CAP_MODE|NFS_CAP_NLINK|NFS_CAP_OWNER|
2043 NFS_CAP_OWNER_GROUP|NFS_CAP_ATIME|
2044 NFS_CAP_CTIME|NFS_CAP_MTIME);
2045 if (res.attr_bitmask[0] & FATTR4_WORD0_ACL)
2046 server->caps |= NFS_CAP_ACLS;
2047 if (res.has_links != 0)
2048 server->caps |= NFS_CAP_HARDLINKS;
2049 if (res.has_symlinks != 0)
2050 server->caps |= NFS_CAP_SYMLINKS;
2051 if (res.attr_bitmask[0] & FATTR4_WORD0_FILEID)
2052 server->caps |= NFS_CAP_FILEID;
2053 if (res.attr_bitmask[1] & FATTR4_WORD1_MODE)
2054 server->caps |= NFS_CAP_MODE;
2055 if (res.attr_bitmask[1] & FATTR4_WORD1_NUMLINKS)
2056 server->caps |= NFS_CAP_NLINK;
2057 if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER)
2058 server->caps |= NFS_CAP_OWNER;
2059 if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER_GROUP)
2060 server->caps |= NFS_CAP_OWNER_GROUP;
2061 if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_ACCESS)
2062 server->caps |= NFS_CAP_ATIME;
2063 if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_METADATA)
2064 server->caps |= NFS_CAP_CTIME;
2065 if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_MODIFY)
2066 server->caps |= NFS_CAP_MTIME;
2068 memcpy(server->cache_consistency_bitmask, res.attr_bitmask, sizeof(server->cache_consistency_bitmask));
2069 server->cache_consistency_bitmask[0] &= FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE;
2070 server->cache_consistency_bitmask[1] &= FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY;
2071 server->acl_bitmask = res.acl_bitmask;
2077 int nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle)
2079 struct nfs4_exception exception = { };
2082 err = nfs4_handle_exception(server,
2083 _nfs4_server_capabilities(server, fhandle),
2085 } while (exception.retry);
2089 static int _nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle,
2090 struct nfs_fsinfo *info)
2092 struct nfs4_lookup_root_arg args = {
2093 .bitmask = nfs4_fattr_bitmap,
2095 struct nfs4_lookup_res res = {
2097 .fattr = info->fattr,
2100 struct rpc_message msg = {
2101 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP_ROOT],
2106 nfs_fattr_init(info->fattr);
2107 return nfs4_call_sync(server, &msg, &args, &res, 0);
2110 static int nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle,
2111 struct nfs_fsinfo *info)
2113 struct nfs4_exception exception = { };
2116 err = nfs4_handle_exception(server,
2117 _nfs4_lookup_root(server, fhandle, info),
2119 } while (exception.retry);
2124 * get the file handle for the "/" directory on the server
2126 static int nfs4_proc_get_root(struct nfs_server *server, struct nfs_fh *fhandle,
2127 struct nfs_fsinfo *info)
2131 status = nfs4_lookup_root(server, fhandle, info);
2133 status = nfs4_server_capabilities(server, fhandle);
2135 status = nfs4_do_fsinfo(server, fhandle, info);
2136 return nfs4_map_errors(status);
2140 * Get locations and (maybe) other attributes of a referral.
2141 * Note that we'll actually follow the referral later when
2142 * we detect fsid mismatch in inode revalidation
2144 static int nfs4_get_referral(struct inode *dir, const struct qstr *name, struct nfs_fattr *fattr, struct nfs_fh *fhandle)
2146 int status = -ENOMEM;
2147 struct page *page = NULL;
2148 struct nfs4_fs_locations *locations = NULL;
2150 page = alloc_page(GFP_KERNEL);
2153 locations = kmalloc(sizeof(struct nfs4_fs_locations), GFP_KERNEL);
2154 if (locations == NULL)
2157 status = nfs4_proc_fs_locations(dir, name, locations, page);
2160 /* Make sure server returned a different fsid for the referral */
2161 if (nfs_fsid_equal(&NFS_SERVER(dir)->fsid, &locations->fattr.fsid)) {
2162 dprintk("%s: server did not return a different fsid for a referral at %s\n", __func__, name->name);
2167 memcpy(fattr, &locations->fattr, sizeof(struct nfs_fattr));
2168 fattr->valid |= NFS_ATTR_FATTR_V4_REFERRAL;
2170 fattr->mode = S_IFDIR;
2171 memset(fhandle, 0, sizeof(struct nfs_fh));
2179 static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr)
2181 struct nfs4_getattr_arg args = {
2183 .bitmask = server->attr_bitmask,
2185 struct nfs4_getattr_res res = {
2189 struct rpc_message msg = {
2190 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETATTR],
2195 nfs_fattr_init(fattr);
2196 return nfs4_call_sync(server, &msg, &args, &res, 0);
2199 static int nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr)
2201 struct nfs4_exception exception = { };
2204 err = nfs4_handle_exception(server,
2205 _nfs4_proc_getattr(server, fhandle, fattr),
2207 } while (exception.retry);
2212 * The file is not closed if it is opened due to the a request to change
2213 * the size of the file. The open call will not be needed once the
2214 * VFS layer lookup-intents are implemented.
2216 * Close is called when the inode is destroyed.
2217 * If we haven't opened the file for O_WRONLY, we
2218 * need to in the size_change case to obtain a stateid.
2221 * Because OPEN is always done by name in nfsv4, it is
2222 * possible that we opened a different file by the same
2223 * name. We can recognize this race condition, but we
2224 * can't do anything about it besides returning an error.
2226 * This will be fixed with VFS changes (lookup-intent).
2229 nfs4_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr,
2230 struct iattr *sattr)
2232 struct inode *inode = dentry->d_inode;
2233 struct rpc_cred *cred = NULL;
2234 struct nfs4_state *state = NULL;
2237 nfs_fattr_init(fattr);
2239 /* Search for an existing open(O_WRITE) file */
2240 if (sattr->ia_valid & ATTR_FILE) {
2241 struct nfs_open_context *ctx;
2243 ctx = nfs_file_open_context(sattr->ia_file);
2250 status = nfs4_do_setattr(inode, cred, fattr, sattr, state);
2252 nfs_setattr_update_inode(inode, sattr);
2256 static int _nfs4_proc_lookupfh(struct nfs_server *server, const struct nfs_fh *dirfh,
2257 const struct qstr *name, struct nfs_fh *fhandle,
2258 struct nfs_fattr *fattr)
2261 struct nfs4_lookup_arg args = {
2262 .bitmask = server->attr_bitmask,
2266 struct nfs4_lookup_res res = {
2271 struct rpc_message msg = {
2272 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP],
2277 nfs_fattr_init(fattr);
2279 dprintk("NFS call lookupfh %s\n", name->name);
2280 status = nfs4_call_sync(server, &msg, &args, &res, 0);
2281 dprintk("NFS reply lookupfh: %d\n", status);
2285 static int nfs4_proc_lookupfh(struct nfs_server *server, struct nfs_fh *dirfh,
2286 struct qstr *name, struct nfs_fh *fhandle,
2287 struct nfs_fattr *fattr)
2289 struct nfs4_exception exception = { };
2292 err = _nfs4_proc_lookupfh(server, dirfh, name, fhandle, fattr);
2294 if (err == -NFS4ERR_MOVED) {
2298 err = nfs4_handle_exception(server, err, &exception);
2299 } while (exception.retry);
2303 static int _nfs4_proc_lookup(struct inode *dir, const struct qstr *name,
2304 struct nfs_fh *fhandle, struct nfs_fattr *fattr)
2308 dprintk("NFS call lookup %s\n", name->name);
2309 status = _nfs4_proc_lookupfh(NFS_SERVER(dir), NFS_FH(dir), name, fhandle, fattr);
2310 if (status == -NFS4ERR_MOVED)
2311 status = nfs4_get_referral(dir, name, fattr, fhandle);
2312 dprintk("NFS reply lookup: %d\n", status);
2316 static int nfs4_proc_lookup(struct inode *dir, struct qstr *name, struct nfs_fh *fhandle, struct nfs_fattr *fattr)
2318 struct nfs4_exception exception = { };
2321 err = nfs4_handle_exception(NFS_SERVER(dir),
2322 _nfs4_proc_lookup(dir, name, fhandle, fattr),
2324 } while (exception.retry);
2328 static int _nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry)
2330 struct nfs_server *server = NFS_SERVER(inode);
2331 struct nfs4_accessargs args = {
2332 .fh = NFS_FH(inode),
2333 .bitmask = server->attr_bitmask,
2335 struct nfs4_accessres res = {
2338 struct rpc_message msg = {
2339 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_ACCESS],
2342 .rpc_cred = entry->cred,
2344 int mode = entry->mask;
2348 * Determine which access bits we want to ask for...
2350 if (mode & MAY_READ)
2351 args.access |= NFS4_ACCESS_READ;
2352 if (S_ISDIR(inode->i_mode)) {
2353 if (mode & MAY_WRITE)
2354 args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND | NFS4_ACCESS_DELETE;
2355 if (mode & MAY_EXEC)
2356 args.access |= NFS4_ACCESS_LOOKUP;
2358 if (mode & MAY_WRITE)
2359 args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND;
2360 if (mode & MAY_EXEC)
2361 args.access |= NFS4_ACCESS_EXECUTE;
2364 res.fattr = nfs_alloc_fattr();
2365 if (res.fattr == NULL)
2368 status = nfs4_call_sync(server, &msg, &args, &res, 0);
2371 if (res.access & NFS4_ACCESS_READ)
2372 entry->mask |= MAY_READ;
2373 if (res.access & (NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND | NFS4_ACCESS_DELETE))
2374 entry->mask |= MAY_WRITE;
2375 if (res.access & (NFS4_ACCESS_LOOKUP|NFS4_ACCESS_EXECUTE))
2376 entry->mask |= MAY_EXEC;
2377 nfs_refresh_inode(inode, res.fattr);
2379 nfs_free_fattr(res.fattr);
2383 static int nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry)
2385 struct nfs4_exception exception = { };
2388 err = nfs4_handle_exception(NFS_SERVER(inode),
2389 _nfs4_proc_access(inode, entry),
2391 } while (exception.retry);
2396 * TODO: For the time being, we don't try to get any attributes
2397 * along with any of the zero-copy operations READ, READDIR,
2400 * In the case of the first three, we want to put the GETATTR
2401 * after the read-type operation -- this is because it is hard
2402 * to predict the length of a GETATTR response in v4, and thus
2403 * align the READ data correctly. This means that the GETATTR
2404 * may end up partially falling into the page cache, and we should
2405 * shift it into the 'tail' of the xdr_buf before processing.
2406 * To do this efficiently, we need to know the total length
2407 * of data received, which doesn't seem to be available outside
2410 * In the case of WRITE, we also want to put the GETATTR after
2411 * the operation -- in this case because we want to make sure
2412 * we get the post-operation mtime and size. This means that
2413 * we can't use xdr_encode_pages() as written: we need a variant
2414 * of it which would leave room in the 'tail' iovec.
2416 * Both of these changes to the XDR layer would in fact be quite
2417 * minor, but I decided to leave them for a subsequent patch.
2419 static int _nfs4_proc_readlink(struct inode *inode, struct page *page,
2420 unsigned int pgbase, unsigned int pglen)
2422 struct nfs4_readlink args = {
2423 .fh = NFS_FH(inode),
2428 struct nfs4_readlink_res res;
2429 struct rpc_message msg = {
2430 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READLINK],
2435 return nfs4_call_sync(NFS_SERVER(inode), &msg, &args, &res, 0);
2438 static int nfs4_proc_readlink(struct inode *inode, struct page *page,
2439 unsigned int pgbase, unsigned int pglen)
2441 struct nfs4_exception exception = { };
2444 err = nfs4_handle_exception(NFS_SERVER(inode),
2445 _nfs4_proc_readlink(inode, page, pgbase, pglen),
2447 } while (exception.retry);
2453 * We will need to arrange for the VFS layer to provide an atomic open.
2454 * Until then, this create/open method is prone to inefficiency and race
2455 * conditions due to the lookup, create, and open VFS calls from sys_open()
2456 * placed on the wire.
2458 * Given the above sorry state of affairs, I'm simply sending an OPEN.
2459 * The file will be opened again in the subsequent VFS open call
2460 * (nfs4_proc_file_open).
2462 * The open for read will just hang around to be used by any process that
2463 * opens the file O_RDONLY. This will all be resolved with the VFS changes.
2467 nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
2468 int flags, struct nfs_open_context *ctx)
2470 struct path my_path = {
2473 struct path *path = &my_path;
2474 struct nfs4_state *state;
2475 struct rpc_cred *cred = NULL;
2484 state = nfs4_do_open(dir, path, fmode, flags, sattr, cred);
2486 if (IS_ERR(state)) {
2487 status = PTR_ERR(state);
2490 d_add(dentry, igrab(state->inode));
2491 nfs_set_verifier(dentry, nfs_save_change_attribute(dir));
2495 nfs4_close_sync(path, state, fmode);
2500 static int _nfs4_proc_remove(struct inode *dir, struct qstr *name)
2502 struct nfs_server *server = NFS_SERVER(dir);
2503 struct nfs_removeargs args = {
2505 .name.len = name->len,
2506 .name.name = name->name,
2507 .bitmask = server->attr_bitmask,
2509 struct nfs_removeres res = {
2512 struct rpc_message msg = {
2513 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE],
2517 int status = -ENOMEM;
2519 res.dir_attr = nfs_alloc_fattr();
2520 if (res.dir_attr == NULL)
2523 status = nfs4_call_sync(server, &msg, &args, &res, 1);
2525 update_changeattr(dir, &res.cinfo);
2526 nfs_post_op_update_inode(dir, res.dir_attr);
2528 nfs_free_fattr(res.dir_attr);
2533 static int nfs4_proc_remove(struct inode *dir, struct qstr *name)
2535 struct nfs4_exception exception = { };
2538 err = nfs4_handle_exception(NFS_SERVER(dir),
2539 _nfs4_proc_remove(dir, name),
2541 } while (exception.retry);
2545 static void nfs4_proc_unlink_setup(struct rpc_message *msg, struct inode *dir)
2547 struct nfs_server *server = NFS_SERVER(dir);
2548 struct nfs_removeargs *args = msg->rpc_argp;
2549 struct nfs_removeres *res = msg->rpc_resp;
2551 args->bitmask = server->cache_consistency_bitmask;
2552 res->server = server;
2553 res->seq_res.sr_slotid = NFS4_MAX_SLOT_TABLE;
2554 msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE];
2557 static int nfs4_proc_unlink_done(struct rpc_task *task, struct inode *dir)
2559 struct nfs_removeres *res = task->tk_msg.rpc_resp;
2561 if (!nfs4_sequence_done(task, &res->seq_res))
2563 if (nfs4_async_handle_error(task, res->server, NULL) == -EAGAIN)
2565 update_changeattr(dir, &res->cinfo);
2566 nfs_post_op_update_inode(dir, res->dir_attr);
2570 static void nfs4_proc_rename_setup(struct rpc_message *msg, struct inode *dir)
2572 struct nfs_server *server = NFS_SERVER(dir);
2573 struct nfs_renameargs *arg = msg->rpc_argp;
2574 struct nfs_renameres *res = msg->rpc_resp;
2576 msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME];
2577 arg->bitmask = server->attr_bitmask;
2578 res->server = server;
2579 res->seq_res.sr_slotid = NFS4_MAX_SLOT_TABLE;
2582 static int nfs4_proc_rename_done(struct rpc_task *task, struct inode *old_dir,
2583 struct inode *new_dir)
2585 struct nfs_renameres *res = task->tk_msg.rpc_resp;
2587 if (!nfs4_sequence_done(task, &res->seq_res))
2589 if (nfs4_async_handle_error(task, res->server, NULL) == -EAGAIN)
2592 update_changeattr(old_dir, &res->old_cinfo);
2593 nfs_post_op_update_inode(old_dir, res->old_fattr);
2594 update_changeattr(new_dir, &res->new_cinfo);
2595 nfs_post_op_update_inode(new_dir, res->new_fattr);
2599 static int _nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name,
2600 struct inode *new_dir, struct qstr *new_name)
2602 struct nfs_server *server = NFS_SERVER(old_dir);
2603 struct nfs_renameargs arg = {
2604 .old_dir = NFS_FH(old_dir),
2605 .new_dir = NFS_FH(new_dir),
2606 .old_name = old_name,
2607 .new_name = new_name,
2608 .bitmask = server->attr_bitmask,
2610 struct nfs_renameres res = {
2613 struct rpc_message msg = {
2614 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME],
2618 int status = -ENOMEM;
2620 res.old_fattr = nfs_alloc_fattr();
2621 res.new_fattr = nfs_alloc_fattr();
2622 if (res.old_fattr == NULL || res.new_fattr == NULL)
2625 status = nfs4_call_sync(server, &msg, &arg, &res, 1);
2627 update_changeattr(old_dir, &res.old_cinfo);
2628 nfs_post_op_update_inode(old_dir, res.old_fattr);
2629 update_changeattr(new_dir, &res.new_cinfo);
2630 nfs_post_op_update_inode(new_dir, res.new_fattr);
2633 nfs_free_fattr(res.new_fattr);
2634 nfs_free_fattr(res.old_fattr);
2638 static int nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name,
2639 struct inode *new_dir, struct qstr *new_name)
2641 struct nfs4_exception exception = { };
2644 err = nfs4_handle_exception(NFS_SERVER(old_dir),
2645 _nfs4_proc_rename(old_dir, old_name,
2648 } while (exception.retry);
2652 static int _nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name)
2654 struct nfs_server *server = NFS_SERVER(inode);
2655 struct nfs4_link_arg arg = {
2656 .fh = NFS_FH(inode),
2657 .dir_fh = NFS_FH(dir),
2659 .bitmask = server->attr_bitmask,
2661 struct nfs4_link_res res = {
2664 struct rpc_message msg = {
2665 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LINK],
2669 int status = -ENOMEM;
2671 res.fattr = nfs_alloc_fattr();
2672 res.dir_attr = nfs_alloc_fattr();
2673 if (res.fattr == NULL || res.dir_attr == NULL)
2676 status = nfs4_call_sync(server, &msg, &arg, &res, 1);
2678 update_changeattr(dir, &res.cinfo);
2679 nfs_post_op_update_inode(dir, res.dir_attr);
2680 nfs_post_op_update_inode(inode, res.fattr);
2683 nfs_free_fattr(res.dir_attr);
2684 nfs_free_fattr(res.fattr);
2688 static int nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name)
2690 struct nfs4_exception exception = { };
2693 err = nfs4_handle_exception(NFS_SERVER(inode),
2694 _nfs4_proc_link(inode, dir, name),
2696 } while (exception.retry);
2700 struct nfs4_createdata {
2701 struct rpc_message msg;
2702 struct nfs4_create_arg arg;
2703 struct nfs4_create_res res;
2705 struct nfs_fattr fattr;
2706 struct nfs_fattr dir_fattr;
2709 static struct nfs4_createdata *nfs4_alloc_createdata(struct inode *dir,
2710 struct qstr *name, struct iattr *sattr, u32 ftype)
2712 struct nfs4_createdata *data;
2714 data = kzalloc(sizeof(*data), GFP_KERNEL);
2716 struct nfs_server *server = NFS_SERVER(dir);
2718 data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE];
2719 data->msg.rpc_argp = &data->arg;
2720 data->msg.rpc_resp = &data->res;
2721 data->arg.dir_fh = NFS_FH(dir);
2722 data->arg.server = server;
2723 data->arg.name = name;
2724 data->arg.attrs = sattr;
2725 data->arg.ftype = ftype;
2726 data->arg.bitmask = server->attr_bitmask;
2727 data->res.server = server;
2728 data->res.fh = &data->fh;
2729 data->res.fattr = &data->fattr;
2730 data->res.dir_fattr = &data->dir_fattr;
2731 nfs_fattr_init(data->res.fattr);
2732 nfs_fattr_init(data->res.dir_fattr);
2737 static int nfs4_do_create(struct inode *dir, struct dentry *dentry, struct nfs4_createdata *data)
2739 int status = nfs4_call_sync(NFS_SERVER(dir), &data->msg,
2740 &data->arg, &data->res, 1);
2742 update_changeattr(dir, &data->res.dir_cinfo);
2743 nfs_post_op_update_inode(dir, data->res.dir_fattr);
2744 status = nfs_instantiate(dentry, data->res.fh, data->res.fattr);
2749 static void nfs4_free_createdata(struct nfs4_createdata *data)
2754 static int _nfs4_proc_symlink(struct inode *dir, struct dentry *dentry,
2755 struct page *page, unsigned int len, struct iattr *sattr)
2757 struct nfs4_createdata *data;
2758 int status = -ENAMETOOLONG;
2760 if (len > NFS4_MAXPATHLEN)
2764 data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4LNK);
2768 data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SYMLINK];
2769 data->arg.u.symlink.pages = &page;
2770 data->arg.u.symlink.len = len;
2772 status = nfs4_do_create(dir, dentry, data);
2774 nfs4_free_createdata(data);
2779 static int nfs4_proc_symlink(struct inode *dir, struct dentry *dentry,
2780 struct page *page, unsigned int len, struct iattr *sattr)
2782 struct nfs4_exception exception = { };
2785 err = nfs4_handle_exception(NFS_SERVER(dir),
2786 _nfs4_proc_symlink(dir, dentry, page,
2789 } while (exception.retry);
2793 static int _nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry,
2794 struct iattr *sattr)
2796 struct nfs4_createdata *data;
2797 int status = -ENOMEM;
2799 data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4DIR);
2803 status = nfs4_do_create(dir, dentry, data);
2805 nfs4_free_createdata(data);
2810 static int nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry,
2811 struct iattr *sattr)
2813 struct nfs4_exception exception = { };
2816 err = nfs4_handle_exception(NFS_SERVER(dir),
2817 _nfs4_proc_mkdir(dir, dentry, sattr),
2819 } while (exception.retry);
2823 static int _nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred,
2824 u64 cookie, struct page *page, unsigned int count, int plus)
2826 struct inode *dir = dentry->d_inode;
2827 struct nfs4_readdir_arg args = {
2832 .bitmask = NFS_SERVER(dentry->d_inode)->attr_bitmask,
2834 struct nfs4_readdir_res res;
2835 struct rpc_message msg = {
2836 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READDIR],
2843 dprintk("%s: dentry = %s/%s, cookie = %Lu\n", __func__,
2844 dentry->d_parent->d_name.name,
2845 dentry->d_name.name,
2846 (unsigned long long)cookie);
2847 nfs4_setup_readdir(cookie, NFS_COOKIEVERF(dir), dentry, &args);
2848 res.pgbase = args.pgbase;
2849 status = nfs4_call_sync(NFS_SERVER(dir), &msg, &args, &res, 0);
2851 memcpy(NFS_COOKIEVERF(dir), res.verifier.data, NFS4_VERIFIER_SIZE);
2853 nfs_invalidate_atime(dir);
2855 dprintk("%s: returns %d\n", __func__, status);
2859 static int nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred,
2860 u64 cookie, struct page *page, unsigned int count, int plus)
2862 struct nfs4_exception exception = { };
2865 err = nfs4_handle_exception(NFS_SERVER(dentry->d_inode),
2866 _nfs4_proc_readdir(dentry, cred, cookie,
2869 } while (exception.retry);
2873 static int _nfs4_proc_mknod(struct inode *dir, struct dentry *dentry,
2874 struct iattr *sattr, dev_t rdev)
2876 struct nfs4_createdata *data;
2877 int mode = sattr->ia_mode;
2878 int status = -ENOMEM;
2880 BUG_ON(!(sattr->ia_valid & ATTR_MODE));
2881 BUG_ON(!S_ISFIFO(mode) && !S_ISBLK(mode) && !S_ISCHR(mode) && !S_ISSOCK(mode));
2883 data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4SOCK);
2888 data->arg.ftype = NF4FIFO;
2889 else if (S_ISBLK(mode)) {
2890 data->arg.ftype = NF4BLK;
2891 data->arg.u.device.specdata1 = MAJOR(rdev);
2892 data->arg.u.device.specdata2 = MINOR(rdev);
2894 else if (S_ISCHR(mode)) {
2895 data->arg.ftype = NF4CHR;
2896 data->arg.u.device.specdata1 = MAJOR(rdev);
2897 data->arg.u.device.specdata2 = MINOR(rdev);
2900 status = nfs4_do_create(dir, dentry, data);
2902 nfs4_free_createdata(data);
2907 static int nfs4_proc_mknod(struct inode *dir, struct dentry *dentry,
2908 struct iattr *sattr, dev_t rdev)
2910 struct nfs4_exception exception = { };
2913 err = nfs4_handle_exception(NFS_SERVER(dir),
2914 _nfs4_proc_mknod(dir, dentry, sattr, rdev),
2916 } while (exception.retry);
2920 static int _nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle,
2921 struct nfs_fsstat *fsstat)
2923 struct nfs4_statfs_arg args = {
2925 .bitmask = server->attr_bitmask,
2927 struct nfs4_statfs_res res = {
2930 struct rpc_message msg = {
2931 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_STATFS],
2936 nfs_fattr_init(fsstat->fattr);
2937 return nfs4_call_sync(server, &msg, &args, &res, 0);
2940 static int nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsstat *fsstat)
2942 struct nfs4_exception exception = { };
2945 err = nfs4_handle_exception(server,
2946 _nfs4_proc_statfs(server, fhandle, fsstat),
2948 } while (exception.retry);
2952 static int _nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle,
2953 struct nfs_fsinfo *fsinfo)
2955 struct nfs4_fsinfo_arg args = {
2957 .bitmask = server->attr_bitmask,
2959 struct nfs4_fsinfo_res res = {
2962 struct rpc_message msg = {
2963 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FSINFO],
2968 return nfs4_call_sync(server, &msg, &args, &res, 0);
2971 static int nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo)
2973 struct nfs4_exception exception = { };
2977 err = nfs4_handle_exception(server,
2978 _nfs4_do_fsinfo(server, fhandle, fsinfo),
2980 } while (exception.retry);
2984 static int nfs4_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo)
2986 nfs_fattr_init(fsinfo->fattr);
2987 return nfs4_do_fsinfo(server, fhandle, fsinfo);
2990 static int _nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle,
2991 struct nfs_pathconf *pathconf)
2993 struct nfs4_pathconf_arg args = {
2995 .bitmask = server->attr_bitmask,
2997 struct nfs4_pathconf_res res = {
2998 .pathconf = pathconf,
3000 struct rpc_message msg = {
3001 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_PATHCONF],
3006 /* None of the pathconf attributes are mandatory to implement */
3007 if ((args.bitmask[0] & nfs4_pathconf_bitmap[0]) == 0) {
3008 memset(pathconf, 0, sizeof(*pathconf));
3012 nfs_fattr_init(pathconf->fattr);
3013 return nfs4_call_sync(server, &msg, &args, &res, 0);
3016 static int nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle,
3017 struct nfs_pathconf *pathconf)
3019 struct nfs4_exception exception = { };
3023 err = nfs4_handle_exception(server,
3024 _nfs4_proc_pathconf(server, fhandle, pathconf),
3026 } while (exception.retry);
3030 static int nfs4_read_done(struct rpc_task *task, struct nfs_read_data *data)
3032 struct nfs_server *server = NFS_SERVER(data->inode);
3034 dprintk("--> %s\n", __func__);
3036 if (!nfs4_sequence_done(task, &data->res.seq_res))
3039 if (nfs4_async_handle_error(task, server, data->args.context->state) == -EAGAIN) {
3040 nfs_restart_rpc(task, server->nfs_client);
3044 nfs_invalidate_atime(data->inode);
3045 if (task->tk_status > 0)
3046 renew_lease(server, data->timestamp);
3050 static void nfs4_proc_read_setup(struct nfs_read_data *data, struct rpc_message *msg)
3052 data->timestamp = jiffies;
3053 msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READ];
3056 static int nfs4_write_done(struct rpc_task *task, struct nfs_write_data *data)
3058 struct inode *inode = data->inode;
3060 if (!nfs4_sequence_done(task, &data->res.seq_res))
3063 if (nfs4_async_handle_error(task, NFS_SERVER(inode), data->args.context->state) == -EAGAIN) {
3064 nfs_restart_rpc(task, NFS_SERVER(inode)->nfs_client);
3067 if (task->tk_status >= 0) {
3068 renew_lease(NFS_SERVER(inode), data->timestamp);
3069 nfs_post_op_update_inode_force_wcc(inode, data->res.fattr);
3074 static void nfs4_proc_write_setup(struct nfs_write_data *data, struct rpc_message *msg)
3076 struct nfs_server *server = NFS_SERVER(data->inode);
3078 data->args.bitmask = server->cache_consistency_bitmask;
3079 data->res.server = server;
3080 data->timestamp = jiffies;
3082 msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_WRITE];
3085 static int nfs4_commit_done(struct rpc_task *task, struct nfs_write_data *data)
3087 struct inode *inode = data->inode;
3089 if (!nfs4_sequence_done(task, &data->res.seq_res))
3092 if (nfs4_async_handle_error(task, NFS_SERVER(inode), NULL) == -EAGAIN) {
3093 nfs_restart_rpc(task, NFS_SERVER(inode)->nfs_client);
3096 nfs_refresh_inode(inode, data->res.fattr);
3100 static void nfs4_proc_commit_setup(struct nfs_write_data *data, struct rpc_message *msg)
3102 struct nfs_server *server = NFS_SERVER(data->inode);
3104 data->args.bitmask = server->cache_consistency_bitmask;
3105 data->res.server = server;
3106 msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_COMMIT];
3109 struct nfs4_renewdata {
3110 struct nfs_client *client;
3111 unsigned long timestamp;
3115 * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special
3116 * standalone procedure for queueing an asynchronous RENEW.
3118 static void nfs4_renew_release(void *calldata)
3120 struct nfs4_renewdata *data = calldata;
3121 struct nfs_client *clp = data->client;
3123 if (atomic_read(&clp->cl_count) > 1)
3124 nfs4_schedule_state_renewal(clp);
3125 nfs_put_client(clp);
3129 static void nfs4_renew_done(struct rpc_task *task, void *calldata)
3131 struct nfs4_renewdata *data = calldata;
3132 struct nfs_client *clp = data->client;
3133 unsigned long timestamp = data->timestamp;
3135 if (task->tk_status < 0) {
3136 /* Unless we're shutting down, schedule state recovery! */
3137 if (test_bit(NFS_CS_RENEWD, &clp->cl_res_state) != 0)
3138 nfs4_schedule_state_recovery(clp);
3141 do_renew_lease(clp, timestamp);
3144 static const struct rpc_call_ops nfs4_renew_ops = {
3145 .rpc_call_done = nfs4_renew_done,
3146 .rpc_release = nfs4_renew_release,
3149 int nfs4_proc_async_renew(struct nfs_client *clp, struct rpc_cred *cred)
3151 struct rpc_message msg = {
3152 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW],
3156 struct nfs4_renewdata *data;
3158 if (!atomic_inc_not_zero(&clp->cl_count))
3160 data = kmalloc(sizeof(*data), GFP_KERNEL);
3164 data->timestamp = jiffies;
3165 return rpc_call_async(clp->cl_rpcclient, &msg, RPC_TASK_SOFT,
3166 &nfs4_renew_ops, data);
3169 int nfs4_proc_renew(struct nfs_client *clp, struct rpc_cred *cred)
3171 struct rpc_message msg = {
3172 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW],
3176 unsigned long now = jiffies;
3179 status = rpc_call_sync(clp->cl_rpcclient, &msg, 0);
3182 do_renew_lease(clp, now);
3186 static inline int nfs4_server_supports_acls(struct nfs_server *server)
3188 return (server->caps & NFS_CAP_ACLS)
3189 && (server->acl_bitmask & ACL4_SUPPORT_ALLOW_ACL)
3190 && (server->acl_bitmask & ACL4_SUPPORT_DENY_ACL);
3193 /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_CACHE_SIZE, and that
3194 * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_CACHE_SIZE) bytes on
3197 #define NFS4ACL_MAXPAGES (XATTR_SIZE_MAX >> PAGE_CACHE_SHIFT)
3199 static void buf_to_pages(const void *buf, size_t buflen,
3200 struct page **pages, unsigned int *pgbase)
3202 const void *p = buf;
3204 *pgbase = offset_in_page(buf);
3206 while (p < buf + buflen) {
3207 *(pages++) = virt_to_page(p);
3208 p += PAGE_CACHE_SIZE;
3212 struct nfs4_cached_acl {
3218 static void nfs4_set_cached_acl(struct inode *inode, struct nfs4_cached_acl *acl)
3220 struct nfs_inode *nfsi = NFS_I(inode);
3222 spin_lock(&inode->i_lock);
3223 kfree(nfsi->nfs4_acl);
3224 nfsi->nfs4_acl = acl;
3225 spin_unlock(&inode->i_lock);
3228 static void nfs4_zap_acl_attr(struct inode *inode)
3230 nfs4_set_cached_acl(inode, NULL);
3233 static inline ssize_t nfs4_read_cached_acl(struct inode *inode, char *buf, size_t buflen)
3235 struct nfs_inode *nfsi = NFS_I(inode);
3236 struct nfs4_cached_acl *acl;
3239 spin_lock(&inode->i_lock);
3240 acl = nfsi->nfs4_acl;
3243 if (buf == NULL) /* user is just asking for length */
3245 if (acl->cached == 0)
3247 ret = -ERANGE; /* see getxattr(2) man page */
3248 if (acl->len > buflen)
3250 memcpy(buf, acl->data, acl->len);
3254 spin_unlock(&inode->i_lock);
3258 static void nfs4_write_cached_acl(struct inode *inode, const char *buf, size_t acl_len)
3260 struct nfs4_cached_acl *acl;
3262 if (buf && acl_len <= PAGE_SIZE) {
3263 acl = kmalloc(sizeof(*acl) + acl_len, GFP_KERNEL);
3267 memcpy(acl->data, buf, acl_len);
3269 acl = kmalloc(sizeof(*acl), GFP_KERNEL);
3276 nfs4_set_cached_acl(inode, acl);
3279 static ssize_t __nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen)
3281 struct page *pages[NFS4ACL_MAXPAGES];
3282 struct nfs_getaclargs args = {
3283 .fh = NFS_FH(inode),
3287 struct nfs_getaclres res = {
3291 struct rpc_message msg = {
3292 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETACL],
3296 struct page *localpage = NULL;
3299 if (buflen < PAGE_SIZE) {
3300 /* As long as we're doing a round trip to the server anyway,
3301 * let's be prepared for a page of acl data. */
3302 localpage = alloc_page(GFP_KERNEL);
3303 resp_buf = page_address(localpage);
3304 if (localpage == NULL)
3306 args.acl_pages[0] = localpage;
3307 args.acl_pgbase = 0;
3308 args.acl_len = PAGE_SIZE;
3311 buf_to_pages(buf, buflen, args.acl_pages, &args.acl_pgbase);
3313 ret = nfs4_call_sync(NFS_SERVER(inode), &msg, &args, &res, 0);
3316 if (res.acl_len > args.acl_len)
3317 nfs4_write_cached_acl(inode, NULL, res.acl_len);
3319 nfs4_write_cached_acl(inode, resp_buf, res.acl_len);
3322 if (res.acl_len > buflen)
3325 memcpy(buf, resp_buf, res.acl_len);
3330 __free_page(localpage);
3334 static ssize_t nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen)
3336 struct nfs4_exception exception = { };
3339 ret = __nfs4_get_acl_uncached(inode, buf, buflen);
3342 ret = nfs4_handle_exception(NFS_SERVER(inode), ret, &exception);
3343 } while (exception.retry);
3347 static ssize_t nfs4_proc_get_acl(struct inode *inode, void *buf, size_t buflen)
3349 struct nfs_server *server = NFS_SERVER(inode);
3352 if (!nfs4_server_supports_acls(server))
3354 ret = nfs_revalidate_inode(server, inode);
3357 ret = nfs4_read_cached_acl(inode, buf, buflen);
3360 return nfs4_get_acl_uncached(inode, buf, buflen);
3363 static int __nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen)
3365 struct nfs_server *server = NFS_SERVER(inode);
3366 struct page *pages[NFS4ACL_MAXPAGES];
3367 struct nfs_setaclargs arg = {
3368 .fh = NFS_FH(inode),
3372 struct nfs_setaclres res;
3373 struct rpc_message msg = {
3374 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETACL],
3380 if (!nfs4_server_supports_acls(server))
3382 nfs_inode_return_delegation(inode);
3383 buf_to_pages(buf, buflen, arg.acl_pages, &arg.acl_pgbase);
3384 ret = nfs4_call_sync(server, &msg, &arg, &res, 1);
3385 nfs_access_zap_cache(inode);
3386 nfs_zap_acl_cache(inode);
3390 static int nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen)
3392 struct nfs4_exception exception = { };
3395 err = nfs4_handle_exception(NFS_SERVER(inode),
3396 __nfs4_proc_set_acl(inode, buf, buflen),
3398 } while (exception.retry);
3403 nfs4_async_handle_error(struct rpc_task *task, const struct nfs_server *server, struct nfs4_state *state)
3405 struct nfs_client *clp = server->nfs_client;
3407 if (task->tk_status >= 0)
3409 switch(task->tk_status) {
3410 case -NFS4ERR_ADMIN_REVOKED:
3411 case -NFS4ERR_BAD_STATEID:
3412 case -NFS4ERR_OPENMODE:
3415 nfs4_state_mark_reclaim_nograce(clp, state);
3416 goto do_state_recovery;
3417 case -NFS4ERR_STALE_STATEID:
3420 nfs4_state_mark_reclaim_reboot(clp, state);
3421 case -NFS4ERR_STALE_CLIENTID:
3422 case -NFS4ERR_EXPIRED:
3423 goto do_state_recovery;
3424 #if defined(CONFIG_NFS_V4_1)
3425 case -NFS4ERR_BADSESSION:
3426 case -NFS4ERR_BADSLOT:
3427 case -NFS4ERR_BAD_HIGH_SLOT:
3428 case -NFS4ERR_DEADSESSION:
3429 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION:
3430 case -NFS4ERR_SEQ_FALSE_RETRY:
3431 case -NFS4ERR_SEQ_MISORDERED:
3432 dprintk("%s ERROR %d, Reset session\n", __func__,
3434 nfs4_schedule_state_recovery(clp);
3435 task->tk_status = 0;
3437 #endif /* CONFIG_NFS_V4_1 */
3438 case -NFS4ERR_DELAY:
3439 nfs_inc_server_stats(server, NFSIOS_DELAY);
3440 case -NFS4ERR_GRACE:
3442 rpc_delay(task, NFS4_POLL_RETRY_MAX);
3443 task->tk_status = 0;
3445 case -NFS4ERR_OLD_STATEID:
3446 task->tk_status = 0;
3449 task->tk_status = nfs4_map_errors(task->tk_status);
3452 rpc_sleep_on(&clp->cl_rpcwaitq, task, NULL);
3453 nfs4_schedule_state_recovery(clp);
3454 if (test_bit(NFS4CLNT_MANAGER_RUNNING, &clp->cl_state) == 0)
3455 rpc_wake_up_queued_task(&clp->cl_rpcwaitq, task);
3456 task->tk_status = 0;
3460 int nfs4_proc_setclientid(struct nfs_client *clp, u32 program,
3461 unsigned short port, struct rpc_cred *cred,
3462 struct nfs4_setclientid_res *res)
3464 nfs4_verifier sc_verifier;
3465 struct nfs4_setclientid setclientid = {
3466 .sc_verifier = &sc_verifier,
3469 struct rpc_message msg = {
3470 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID],
3471 .rpc_argp = &setclientid,
3479 p = (__be32*)sc_verifier.data;
3480 *p++ = htonl((u32)clp->cl_boot_time.tv_sec);
3481 *p = htonl((u32)clp->cl_boot_time.tv_nsec);
3484 setclientid.sc_name_len = scnprintf(setclientid.sc_name,
3485 sizeof(setclientid.sc_name), "%s/%s %s %s %u",
3487 rpc_peeraddr2str(clp->cl_rpcclient,
3489 rpc_peeraddr2str(clp->cl_rpcclient,
3491 clp->cl_rpcclient->cl_auth->au_ops->au_name,
3492 clp->cl_id_uniquifier);
3493 setclientid.sc_netid_len = scnprintf(setclientid.sc_netid,
3494 sizeof(setclientid.sc_netid),
3495 rpc_peeraddr2str(clp->cl_rpcclient,
3496 RPC_DISPLAY_NETID));
3497 setclientid.sc_uaddr_len = scnprintf(setclientid.sc_uaddr,
3498 sizeof(setclientid.sc_uaddr), "%s.%u.%u",
3499 clp->cl_ipaddr, port >> 8, port & 255);
3501 status = rpc_call_sync(clp->cl_rpcclient, &msg, 0);
3502 if (status != -NFS4ERR_CLID_INUSE)
3507 ssleep(clp->cl_lease_time + 1);
3509 if (++clp->cl_id_uniquifier == 0)
3515 static int _nfs4_proc_setclientid_confirm(struct nfs_client *clp,
3516 struct nfs4_setclientid_res *arg,
3517 struct rpc_cred *cred)
3519 struct nfs_fsinfo fsinfo;
3520 struct rpc_message msg = {
3521 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID_CONFIRM],
3523 .rpc_resp = &fsinfo,
3530 status = rpc_call_sync(clp->cl_rpcclient, &msg, 0);
3532 spin_lock(&clp->cl_lock);
3533 clp->cl_lease_time = fsinfo.lease_time * HZ;
3534 clp->cl_last_renewal = now;
3535 spin_unlock(&clp->cl_lock);
3540 int nfs4_proc_setclientid_confirm(struct nfs_client *clp,
3541 struct nfs4_setclientid_res *arg,
3542 struct rpc_cred *cred)
3547 err = _nfs4_proc_setclientid_confirm(clp, arg, cred);
3551 case -NFS4ERR_RESOURCE:
3552 /* The IBM lawyers misread another document! */
3553 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 data->res.seq_res.sr_slotid = NFS4_MAX_SLOT_TABLE;
3650 nfs_fattr_init(data->res.fattr);
3651 data->timestamp = jiffies;
3652 data->rpc_status = 0;
3654 task_setup_data.callback_data = data;
3655 msg.rpc_argp = &data->args,
3656 msg.rpc_resp = &data->res,
3657 task = rpc_run_task(&task_setup_data);
3659 return PTR_ERR(task);
3662 status = nfs4_wait_for_completion_rpc_task(task);
3665 status = data->rpc_status;
3668 nfs_refresh_inode(inode, &data->fattr);
3674 int nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync)
3676 struct nfs_server *server = NFS_SERVER(inode);
3677 struct nfs4_exception exception = { };
3680 err = _nfs4_proc_delegreturn(inode, cred, stateid, issync);
3682 case -NFS4ERR_STALE_STATEID:
3683 case -NFS4ERR_EXPIRED:
3687 err = nfs4_handle_exception(server, err, &exception);
3688 } while (exception.retry);
3692 #define NFS4_LOCK_MINTIMEOUT (1 * HZ)
3693 #define NFS4_LOCK_MAXTIMEOUT (30 * HZ)
3696 * sleep, with exponential backoff, and retry the LOCK operation.
3698 static unsigned long
3699 nfs4_set_lock_task_retry(unsigned long timeout)
3701 schedule_timeout_killable(timeout);
3703 if (timeout > NFS4_LOCK_MAXTIMEOUT)
3704 return NFS4_LOCK_MAXTIMEOUT;
3708 static int _nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request)
3710 struct inode *inode = state->inode;
3711 struct nfs_server *server = NFS_SERVER(inode);
3712 struct nfs_client *clp = server->nfs_client;
3713 struct nfs_lockt_args arg = {
3714 .fh = NFS_FH(inode),
3717 struct nfs_lockt_res res = {
3720 struct rpc_message msg = {
3721 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKT],
3724 .rpc_cred = state->owner->so_cred,
3726 struct nfs4_lock_state *lsp;
3729 arg.lock_owner.clientid = clp->cl_clientid;
3730 status = nfs4_set_lock_state(state, request);
3733 lsp = request->fl_u.nfs4_fl.owner;
3734 arg.lock_owner.id = lsp->ls_id.id;
3735 status = nfs4_call_sync(server, &msg, &arg, &res, 1);
3738 request->fl_type = F_UNLCK;
3740 case -NFS4ERR_DENIED:
3743 request->fl_ops->fl_release_private(request);
3748 static int nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request)
3750 struct nfs4_exception exception = { };
3754 err = nfs4_handle_exception(NFS_SERVER(state->inode),
3755 _nfs4_proc_getlk(state, cmd, request),
3757 } while (exception.retry);
3761 static int do_vfs_lock(struct file *file, struct file_lock *fl)
3764 switch (fl->fl_flags & (FL_POSIX|FL_FLOCK)) {
3766 res = posix_lock_file_wait(file, fl);
3769 res = flock_lock_file_wait(file, fl);
3777 struct nfs4_unlockdata {
3778 struct nfs_locku_args arg;
3779 struct nfs_locku_res res;
3780 struct nfs4_lock_state *lsp;
3781 struct nfs_open_context *ctx;
3782 struct file_lock fl;
3783 const struct nfs_server *server;
3784 unsigned long timestamp;
3787 static struct nfs4_unlockdata *nfs4_alloc_unlockdata(struct file_lock *fl,
3788 struct nfs_open_context *ctx,
3789 struct nfs4_lock_state *lsp,
3790 struct nfs_seqid *seqid)
3792 struct nfs4_unlockdata *p;
3793 struct inode *inode = lsp->ls_state->inode;
3795 p = kzalloc(sizeof(*p), GFP_NOFS);
3798 p->arg.fh = NFS_FH(inode);
3800 p->arg.seqid = seqid;
3801 p->res.seqid = seqid;
3802 p->res.seq_res.sr_slotid = NFS4_MAX_SLOT_TABLE;
3803 p->arg.stateid = &lsp->ls_stateid;
3805 atomic_inc(&lsp->ls_count);
3806 /* Ensure we don't close file until we're done freeing locks! */
3807 p->ctx = get_nfs_open_context(ctx);
3808 memcpy(&p->fl, fl, sizeof(p->fl));
3809 p->server = NFS_SERVER(inode);
3813 static void nfs4_locku_release_calldata(void *data)
3815 struct nfs4_unlockdata *calldata = data;
3816 nfs_free_seqid(calldata->arg.seqid);
3817 nfs4_put_lock_state(calldata->lsp);
3818 put_nfs_open_context(calldata->ctx);
3822 static void nfs4_locku_done(struct rpc_task *task, void *data)
3824 struct nfs4_unlockdata *calldata = data;
3826 if (!nfs4_sequence_done(task, &calldata->res.seq_res))
3828 switch (task->tk_status) {
3830 memcpy(calldata->lsp->ls_stateid.data,
3831 calldata->res.stateid.data,
3832 sizeof(calldata->lsp->ls_stateid.data));
3833 renew_lease(calldata->server, calldata->timestamp);
3835 case -NFS4ERR_BAD_STATEID:
3836 case -NFS4ERR_OLD_STATEID:
3837 case -NFS4ERR_STALE_STATEID:
3838 case -NFS4ERR_EXPIRED:
3841 if (nfs4_async_handle_error(task, calldata->server, NULL) == -EAGAIN)
3842 nfs_restart_rpc(task,
3843 calldata->server->nfs_client);
3847 static void nfs4_locku_prepare(struct rpc_task *task, void *data)
3849 struct nfs4_unlockdata *calldata = data;
3851 if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0)
3853 if ((calldata->lsp->ls_flags & NFS_LOCK_INITIALIZED) == 0) {
3854 /* Note: exit _without_ running nfs4_locku_done */
3855 task->tk_action = NULL;
3858 calldata->timestamp = jiffies;
3859 if (nfs4_setup_sequence(calldata->server,
3860 &calldata->arg.seq_args,
3861 &calldata->res.seq_res, 1, task))
3863 rpc_call_start(task);
3866 static const struct rpc_call_ops nfs4_locku_ops = {
3867 .rpc_call_prepare = nfs4_locku_prepare,
3868 .rpc_call_done = nfs4_locku_done,
3869 .rpc_release = nfs4_locku_release_calldata,
3872 static struct rpc_task *nfs4_do_unlck(struct file_lock *fl,
3873 struct nfs_open_context *ctx,
3874 struct nfs4_lock_state *lsp,
3875 struct nfs_seqid *seqid)
3877 struct nfs4_unlockdata *data;
3878 struct rpc_message msg = {
3879 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKU],
3880 .rpc_cred = ctx->cred,
3882 struct rpc_task_setup task_setup_data = {
3883 .rpc_client = NFS_CLIENT(lsp->ls_state->inode),
3884 .rpc_message = &msg,
3885 .callback_ops = &nfs4_locku_ops,
3886 .workqueue = nfsiod_workqueue,
3887 .flags = RPC_TASK_ASYNC,
3890 /* Ensure this is an unlock - when canceling a lock, the
3891 * canceled lock is passed in, and it won't be an unlock.
3893 fl->fl_type = F_UNLCK;
3895 data = nfs4_alloc_unlockdata(fl, ctx, lsp, seqid);
3897 nfs_free_seqid(seqid);
3898 return ERR_PTR(-ENOMEM);
3901 msg.rpc_argp = &data->arg,
3902 msg.rpc_resp = &data->res,
3903 task_setup_data.callback_data = data;
3904 return rpc_run_task(&task_setup_data);
3907 static int nfs4_proc_unlck(struct nfs4_state *state, int cmd, struct file_lock *request)
3909 struct nfs_inode *nfsi = NFS_I(state->inode);
3910 struct nfs_seqid *seqid;
3911 struct nfs4_lock_state *lsp;
3912 struct rpc_task *task;
3914 unsigned char fl_flags = request->fl_flags;
3916 status = nfs4_set_lock_state(state, request);
3917 /* Unlock _before_ we do the RPC call */
3918 request->fl_flags |= FL_EXISTS;
3919 down_read(&nfsi->rwsem);
3920 if (do_vfs_lock(request->fl_file, request) == -ENOENT) {
3921 up_read(&nfsi->rwsem);
3924 up_read(&nfsi->rwsem);
3927 /* Is this a delegated lock? */
3928 if (test_bit(NFS_DELEGATED_STATE, &state->flags))
3930 lsp = request->fl_u.nfs4_fl.owner;
3931 seqid = nfs_alloc_seqid(&lsp->ls_seqid, GFP_KERNEL);
3935 task = nfs4_do_unlck(request, nfs_file_open_context(request->fl_file), lsp, seqid);
3936 status = PTR_ERR(task);
3939 status = nfs4_wait_for_completion_rpc_task(task);
3942 request->fl_flags = fl_flags;
3946 struct nfs4_lockdata {
3947 struct nfs_lock_args arg;
3948 struct nfs_lock_res res;
3949 struct nfs4_lock_state *lsp;
3950 struct nfs_open_context *ctx;
3951 struct file_lock fl;
3952 unsigned long timestamp;
3955 struct nfs_server *server;
3958 static struct nfs4_lockdata *nfs4_alloc_lockdata(struct file_lock *fl,
3959 struct nfs_open_context *ctx, struct nfs4_lock_state *lsp,
3962 struct nfs4_lockdata *p;
3963 struct inode *inode = lsp->ls_state->inode;
3964 struct nfs_server *server = NFS_SERVER(inode);
3966 p = kzalloc(sizeof(*p), gfp_mask);
3970 p->arg.fh = NFS_FH(inode);
3972 p->arg.open_seqid = nfs_alloc_seqid(&lsp->ls_state->owner->so_seqid, gfp_mask);
3973 if (p->arg.open_seqid == NULL)
3975 p->arg.lock_seqid = nfs_alloc_seqid(&lsp->ls_seqid, gfp_mask);
3976 if (p->arg.lock_seqid == NULL)
3977 goto out_free_seqid;
3978 p->arg.lock_stateid = &lsp->ls_stateid;
3979 p->arg.lock_owner.clientid = server->nfs_client->cl_clientid;
3980 p->arg.lock_owner.id = lsp->ls_id.id;
3981 p->res.lock_seqid = p->arg.lock_seqid;
3982 p->res.seq_res.sr_slotid = NFS4_MAX_SLOT_TABLE;
3985 atomic_inc(&lsp->ls_count);
3986 p->ctx = get_nfs_open_context(ctx);
3987 memcpy(&p->fl, fl, sizeof(p->fl));
3990 nfs_free_seqid(p->arg.open_seqid);
3996 static void nfs4_lock_prepare(struct rpc_task *task, void *calldata)
3998 struct nfs4_lockdata *data = calldata;
3999 struct nfs4_state *state = data->lsp->ls_state;
4001 dprintk("%s: begin!\n", __func__);
4002 if (nfs_wait_on_sequence(data->arg.lock_seqid, task) != 0)
4004 /* Do we need to do an open_to_lock_owner? */
4005 if (!(data->arg.lock_seqid->sequence->flags & NFS_SEQID_CONFIRMED)) {
4006 if (nfs_wait_on_sequence(data->arg.open_seqid, task) != 0)
4008 data->arg.open_stateid = &state->stateid;
4009 data->arg.new_lock_owner = 1;
4010 data->res.open_seqid = data->arg.open_seqid;
4012 data->arg.new_lock_owner = 0;
4013 data->timestamp = jiffies;
4014 if (nfs4_setup_sequence(data->server,
4015 &data->arg.seq_args,
4016 &data->res.seq_res, 1, task))
4018 rpc_call_start(task);
4019 dprintk("%s: done!, ret = %d\n", __func__, data->rpc_status);
4022 static void nfs4_recover_lock_prepare(struct rpc_task *task, void *calldata)
4024 rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED);
4025 nfs4_lock_prepare(task, calldata);
4028 static void nfs4_lock_done(struct rpc_task *task, void *calldata)
4030 struct nfs4_lockdata *data = calldata;
4032 dprintk("%s: begin!\n", __func__);
4034 if (!nfs4_sequence_done(task, &data->res.seq_res))
4037 data->rpc_status = task->tk_status;
4038 if (data->arg.new_lock_owner != 0) {
4039 if (data->rpc_status == 0)
4040 nfs_confirm_seqid(&data->lsp->ls_seqid, 0);
4044 if (data->rpc_status == 0) {
4045 memcpy(data->lsp->ls_stateid.data, data->res.stateid.data,
4046 sizeof(data->lsp->ls_stateid.data));
4047 data->lsp->ls_flags |= NFS_LOCK_INITIALIZED;
4048 renew_lease(NFS_SERVER(data->ctx->path.dentry->d_inode), data->timestamp);
4051 dprintk("%s: done, ret = %d!\n", __func__, data->rpc_status);
4054 static void nfs4_lock_release(void *calldata)
4056 struct nfs4_lockdata *data = calldata;
4058 dprintk("%s: begin!\n", __func__);
4059 nfs_free_seqid(data->arg.open_seqid);
4060 if (data->cancelled != 0) {
4061 struct rpc_task *task;
4062 task = nfs4_do_unlck(&data->fl, data->ctx, data->lsp,
4063 data->arg.lock_seqid);
4066 dprintk("%s: cancelling lock!\n", __func__);
4068 nfs_free_seqid(data->arg.lock_seqid);
4069 nfs4_put_lock_state(data->lsp);
4070 put_nfs_open_context(data->ctx);
4072 dprintk("%s: done!\n", __func__);
4075 static const struct rpc_call_ops nfs4_lock_ops = {
4076 .rpc_call_prepare = nfs4_lock_prepare,
4077 .rpc_call_done = nfs4_lock_done,
4078 .rpc_release = nfs4_lock_release,
4081 static const struct rpc_call_ops nfs4_recover_lock_ops = {
4082 .rpc_call_prepare = nfs4_recover_lock_prepare,
4083 .rpc_call_done = nfs4_lock_done,
4084 .rpc_release = nfs4_lock_release,
4087 static void nfs4_handle_setlk_error(struct nfs_server *server, struct nfs4_lock_state *lsp, int new_lock_owner, int error)
4089 struct nfs_client *clp = server->nfs_client;
4090 struct nfs4_state *state = lsp->ls_state;
4093 case -NFS4ERR_ADMIN_REVOKED:
4094 case -NFS4ERR_BAD_STATEID:
4095 case -NFS4ERR_EXPIRED:
4096 if (new_lock_owner != 0 ||
4097 (lsp->ls_flags & NFS_LOCK_INITIALIZED) != 0)
4098 nfs4_state_mark_reclaim_nograce(clp, state);
4099 lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED;
4101 case -NFS4ERR_STALE_STATEID:
4102 if (new_lock_owner != 0 ||
4103 (lsp->ls_flags & NFS_LOCK_INITIALIZED) != 0)
4104 nfs4_state_mark_reclaim_reboot(clp, state);
4105 lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED;
4109 static int _nfs4_do_setlk(struct nfs4_state *state, int cmd, struct file_lock *fl, int recovery_type)
4111 struct nfs4_lockdata *data;
4112 struct rpc_task *task;
4113 struct rpc_message msg = {
4114 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCK],
4115 .rpc_cred = state->owner->so_cred,
4117 struct rpc_task_setup task_setup_data = {
4118 .rpc_client = NFS_CLIENT(state->inode),
4119 .rpc_message = &msg,
4120 .callback_ops = &nfs4_lock_ops,
4121 .workqueue = nfsiod_workqueue,
4122 .flags = RPC_TASK_ASYNC,
4126 dprintk("%s: begin!\n", __func__);
4127 data = nfs4_alloc_lockdata(fl, nfs_file_open_context(fl->fl_file),
4128 fl->fl_u.nfs4_fl.owner,
4129 recovery_type == NFS_LOCK_NEW ? GFP_KERNEL : GFP_NOFS);
4133 data->arg.block = 1;
4134 if (recovery_type > NFS_LOCK_NEW) {
4135 if (recovery_type == NFS_LOCK_RECLAIM)
4136 data->arg.reclaim = NFS_LOCK_RECLAIM;
4137 task_setup_data.callback_ops = &nfs4_recover_lock_ops;
4139 msg.rpc_argp = &data->arg,
4140 msg.rpc_resp = &data->res,
4141 task_setup_data.callback_data = data;
4142 task = rpc_run_task(&task_setup_data);
4144 return PTR_ERR(task);
4145 ret = nfs4_wait_for_completion_rpc_task(task);
4147 ret = data->rpc_status;
4149 nfs4_handle_setlk_error(data->server, data->lsp,
4150 data->arg.new_lock_owner, ret);
4152 data->cancelled = 1;
4154 dprintk("%s: done, ret = %d!\n", __func__, ret);
4158 static int nfs4_lock_reclaim(struct nfs4_state *state, struct file_lock *request)
4160 struct nfs_server *server = NFS_SERVER(state->inode);
4161 struct nfs4_exception exception = { };
4165 /* Cache the lock if possible... */
4166 if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0)
4168 err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_RECLAIM);
4169 if (err != -NFS4ERR_DELAY && err != -EKEYEXPIRED)
4171 nfs4_handle_exception(server, err, &exception);
4172 } while (exception.retry);
4176 static int nfs4_lock_expired(struct nfs4_state *state, struct file_lock *request)
4178 struct nfs_server *server = NFS_SERVER(state->inode);
4179 struct nfs4_exception exception = { };
4182 err = nfs4_set_lock_state(state, request);
4186 if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0)
4188 err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_EXPIRED);
4192 case -NFS4ERR_GRACE:
4193 case -NFS4ERR_DELAY:
4195 nfs4_handle_exception(server, err, &exception);
4198 } while (exception.retry);
4203 static int _nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request)
4205 struct nfs_inode *nfsi = NFS_I(state->inode);
4206 unsigned char fl_flags = request->fl_flags;
4207 int status = -ENOLCK;
4209 if ((fl_flags & FL_POSIX) &&
4210 !test_bit(NFS_STATE_POSIX_LOCKS, &state->flags))
4212 /* Is this a delegated open? */
4213 status = nfs4_set_lock_state(state, request);
4216 request->fl_flags |= FL_ACCESS;
4217 status = do_vfs_lock(request->fl_file, request);
4220 down_read(&nfsi->rwsem);
4221 if (test_bit(NFS_DELEGATED_STATE, &state->flags)) {
4222 /* Yes: cache locks! */
4223 /* ...but avoid races with delegation recall... */
4224 request->fl_flags = fl_flags & ~FL_SLEEP;
4225 status = do_vfs_lock(request->fl_file, request);
4228 status = _nfs4_do_setlk(state, cmd, request, NFS_LOCK_NEW);
4231 /* Note: we always want to sleep here! */
4232 request->fl_flags = fl_flags | FL_SLEEP;
4233 if (do_vfs_lock(request->fl_file, request) < 0)
4234 printk(KERN_WARNING "%s: VFS is out of sync with lock manager!\n", __func__);
4236 up_read(&nfsi->rwsem);
4238 request->fl_flags = fl_flags;
4242 static int nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request)
4244 struct nfs4_exception exception = { };
4248 err = _nfs4_proc_setlk(state, cmd, request);
4249 if (err == -NFS4ERR_DENIED)
4251 err = nfs4_handle_exception(NFS_SERVER(state->inode),
4253 } while (exception.retry);
4258 nfs4_proc_lock(struct file *filp, int cmd, struct file_lock *request)
4260 struct nfs_open_context *ctx;
4261 struct nfs4_state *state;
4262 unsigned long timeout = NFS4_LOCK_MINTIMEOUT;
4265 /* verify open state */
4266 ctx = nfs_file_open_context(filp);
4269 if (request->fl_start < 0 || request->fl_end < 0)
4272 if (IS_GETLK(cmd)) {
4274 return nfs4_proc_getlk(state, F_GETLK, request);
4278 if (!(IS_SETLK(cmd) || IS_SETLKW(cmd)))
4281 if (request->fl_type == F_UNLCK) {
4283 return nfs4_proc_unlck(state, cmd, request);
4290 status = nfs4_proc_setlk(state, cmd, request);
4291 if ((status != -EAGAIN) || IS_SETLK(cmd))
4293 timeout = nfs4_set_lock_task_retry(timeout);
4294 status = -ERESTARTSYS;
4297 } while(status < 0);
4301 int nfs4_lock_delegation_recall(struct nfs4_state *state, struct file_lock *fl)
4303 struct nfs_server *server = NFS_SERVER(state->inode);
4304 struct nfs4_exception exception = { };
4307 err = nfs4_set_lock_state(state, fl);
4311 err = _nfs4_do_setlk(state, F_SETLK, fl, NFS_LOCK_NEW);
4314 printk(KERN_ERR "%s: unhandled error %d.\n",
4319 case -NFS4ERR_EXPIRED:
4320 case -NFS4ERR_STALE_CLIENTID:
4321 case -NFS4ERR_STALE_STATEID:
4322 case -NFS4ERR_BADSESSION:
4323 case -NFS4ERR_BADSLOT:
4324 case -NFS4ERR_BAD_HIGH_SLOT:
4325 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION:
4326 case -NFS4ERR_DEADSESSION:
4327 nfs4_schedule_state_recovery(server->nfs_client);
4331 * The show must go on: exit, but mark the
4332 * stateid as needing recovery.
4334 case -NFS4ERR_ADMIN_REVOKED:
4335 case -NFS4ERR_BAD_STATEID:
4336 case -NFS4ERR_OPENMODE:
4337 nfs4_state_mark_reclaim_nograce(server->nfs_client, state);
4341 case -NFS4ERR_DENIED:
4342 /* kill_proc(fl->fl_pid, SIGLOST, 1); */
4345 case -NFS4ERR_DELAY:
4349 err = nfs4_handle_exception(server, err, &exception);
4350 } while (exception.retry);
4355 static void nfs4_release_lockowner_release(void *calldata)
4360 const struct rpc_call_ops nfs4_release_lockowner_ops = {
4361 .rpc_release = nfs4_release_lockowner_release,
4364 void nfs4_release_lockowner(const struct nfs4_lock_state *lsp)
4366 struct nfs_server *server = lsp->ls_state->owner->so_server;
4367 struct nfs_release_lockowner_args *args;
4368 struct rpc_message msg = {
4369 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RELEASE_LOCKOWNER],
4372 if (server->nfs_client->cl_mvops->minor_version != 0)
4374 args = kmalloc(sizeof(*args), GFP_NOFS);
4377 args->lock_owner.clientid = server->nfs_client->cl_clientid;
4378 args->lock_owner.id = lsp->ls_id.id;
4379 msg.rpc_argp = args;
4380 rpc_call_async(server->client, &msg, 0, &nfs4_release_lockowner_ops, args);
4383 #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl"
4385 int nfs4_setxattr(struct dentry *dentry, const char *key, const void *buf,
4386 size_t buflen, int flags)
4388 struct inode *inode = dentry->d_inode;
4390 if (strcmp(key, XATTR_NAME_NFSV4_ACL) != 0)
4393 return nfs4_proc_set_acl(inode, buf, buflen);
4396 /* The getxattr man page suggests returning -ENODATA for unknown attributes,
4397 * and that's what we'll do for e.g. user attributes that haven't been set.
4398 * But we'll follow ext2/ext3's lead by returning -EOPNOTSUPP for unsupported
4399 * attributes in kernel-managed attribute namespaces. */
4400 ssize_t nfs4_getxattr(struct dentry *dentry, const char *key, void *buf,
4403 struct inode *inode = dentry->d_inode;
4405 if (strcmp(key, XATTR_NAME_NFSV4_ACL) != 0)
4408 return nfs4_proc_get_acl(inode, buf, buflen);
4411 ssize_t nfs4_listxattr(struct dentry *dentry, char *buf, size_t buflen)
4413 size_t len = strlen(XATTR_NAME_NFSV4_ACL) + 1;
4415 if (!nfs4_server_supports_acls(NFS_SERVER(dentry->d_inode)))
4417 if (buf && buflen < len)
4420 memcpy(buf, XATTR_NAME_NFSV4_ACL, len);
4424 static void nfs_fixup_referral_attributes(struct nfs_fattr *fattr)
4426 if (!((fattr->valid & NFS_ATTR_FATTR_FILEID) &&
4427 (fattr->valid & NFS_ATTR_FATTR_FSID) &&
4428 (fattr->valid & NFS_ATTR_FATTR_V4_REFERRAL)))
4431 fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE |
4432 NFS_ATTR_FATTR_NLINK;
4433 fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO;
4437 int nfs4_proc_fs_locations(struct inode *dir, const struct qstr *name,
4438 struct nfs4_fs_locations *fs_locations, struct page *page)
4440 struct nfs_server *server = NFS_SERVER(dir);
4442 [0] = FATTR4_WORD0_FSID | FATTR4_WORD0_FS_LOCATIONS,
4443 [1] = FATTR4_WORD1_MOUNTED_ON_FILEID,
4445 struct nfs4_fs_locations_arg args = {
4446 .dir_fh = NFS_FH(dir),
4451 struct nfs4_fs_locations_res res = {
4452 .fs_locations = fs_locations,
4454 struct rpc_message msg = {
4455 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FS_LOCATIONS],
4461 dprintk("%s: start\n", __func__);
4462 nfs_fattr_init(&fs_locations->fattr);
4463 fs_locations->server = server;
4464 fs_locations->nlocations = 0;
4465 status = nfs4_call_sync(server, &msg, &args, &res, 0);
4466 nfs_fixup_referral_attributes(&fs_locations->fattr);
4467 dprintk("%s: returned status = %d\n", __func__, status);
4471 #ifdef CONFIG_NFS_V4_1
4473 * nfs4_proc_exchange_id()
4475 * Since the clientid has expired, all compounds using sessions
4476 * associated with the stale clientid will be returning
4477 * NFS4ERR_BADSESSION in the sequence operation, and will therefore
4478 * be in some phase of session reset.
4480 int nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred)
4482 nfs4_verifier verifier;
4483 struct nfs41_exchange_id_args args = {
4485 .flags = clp->cl_exchange_flags,
4487 struct nfs41_exchange_id_res res = {
4491 struct rpc_message msg = {
4492 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_EXCHANGE_ID],
4499 dprintk("--> %s\n", __func__);
4500 BUG_ON(clp == NULL);
4502 /* Remove server-only flags */
4503 args.flags &= ~EXCHGID4_FLAG_CONFIRMED_R;
4505 p = (u32 *)verifier.data;
4506 *p++ = htonl((u32)clp->cl_boot_time.tv_sec);
4507 *p = htonl((u32)clp->cl_boot_time.tv_nsec);
4508 args.verifier = &verifier;
4511 args.id_len = scnprintf(args.id, sizeof(args.id),
4514 rpc_peeraddr2str(clp->cl_rpcclient,
4516 clp->cl_id_uniquifier);
4518 status = rpc_call_sync(clp->cl_rpcclient, &msg, 0);
4520 if (status != -NFS4ERR_CLID_INUSE)
4526 if (++clp->cl_id_uniquifier == 0)
4530 dprintk("<-- %s status= %d\n", __func__, status);
4534 struct nfs4_get_lease_time_data {
4535 struct nfs4_get_lease_time_args *args;
4536 struct nfs4_get_lease_time_res *res;
4537 struct nfs_client *clp;
4540 static void nfs4_get_lease_time_prepare(struct rpc_task *task,
4544 struct nfs4_get_lease_time_data *data =
4545 (struct nfs4_get_lease_time_data *)calldata;
4547 dprintk("--> %s\n", __func__);
4548 rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED);
4549 /* just setup sequence, do not trigger session recovery
4550 since we're invoked within one */
4551 ret = nfs41_setup_sequence(data->clp->cl_session,
4552 &data->args->la_seq_args,
4553 &data->res->lr_seq_res, 0, task);
4555 BUG_ON(ret == -EAGAIN);
4556 rpc_call_start(task);
4557 dprintk("<-- %s\n", __func__);
4561 * Called from nfs4_state_manager thread for session setup, so don't recover
4562 * from sequence operation or clientid errors.
4564 static void nfs4_get_lease_time_done(struct rpc_task *task, void *calldata)
4566 struct nfs4_get_lease_time_data *data =
4567 (struct nfs4_get_lease_time_data *)calldata;
4569 dprintk("--> %s\n", __func__);
4570 if (!nfs41_sequence_done(task, &data->res->lr_seq_res))
4572 switch (task->tk_status) {
4573 case -NFS4ERR_DELAY:
4574 case -NFS4ERR_GRACE:
4576 dprintk("%s Retry: tk_status %d\n", __func__, task->tk_status);
4577 rpc_delay(task, NFS4_POLL_RETRY_MIN);
4578 task->tk_status = 0;
4579 nfs_restart_rpc(task, data->clp);
4582 dprintk("<-- %s\n", __func__);
4585 struct rpc_call_ops nfs4_get_lease_time_ops = {
4586 .rpc_call_prepare = nfs4_get_lease_time_prepare,
4587 .rpc_call_done = nfs4_get_lease_time_done,
4590 int nfs4_proc_get_lease_time(struct nfs_client *clp, struct nfs_fsinfo *fsinfo)
4592 struct rpc_task *task;
4593 struct nfs4_get_lease_time_args args;
4594 struct nfs4_get_lease_time_res res = {
4595 .lr_fsinfo = fsinfo,
4597 struct nfs4_get_lease_time_data data = {
4602 struct rpc_message msg = {
4603 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GET_LEASE_TIME],
4607 struct rpc_task_setup task_setup = {
4608 .rpc_client = clp->cl_rpcclient,
4609 .rpc_message = &msg,
4610 .callback_ops = &nfs4_get_lease_time_ops,
4611 .callback_data = &data
4615 res.lr_seq_res.sr_slotid = NFS4_MAX_SLOT_TABLE;
4616 dprintk("--> %s\n", __func__);
4617 task = rpc_run_task(&task_setup);
4620 status = PTR_ERR(task);
4622 status = task->tk_status;
4625 dprintk("<-- %s return %d\n", __func__, status);
4631 * Reset a slot table
4633 static int nfs4_reset_slot_table(struct nfs4_slot_table *tbl, u32 max_reqs,
4636 struct nfs4_slot *new = NULL;
4640 dprintk("--> %s: max_reqs=%u, tbl->max_slots %d\n", __func__,
4641 max_reqs, tbl->max_slots);
4643 /* Does the newly negotiated max_reqs match the existing slot table? */
4644 if (max_reqs != tbl->max_slots) {
4646 new = kmalloc(max_reqs * sizeof(struct nfs4_slot),
4653 spin_lock(&tbl->slot_tbl_lock);
4656 tbl->max_slots = max_reqs;
4658 for (i = 0; i < tbl->max_slots; ++i)
4659 tbl->slots[i].seq_nr = ivalue;
4660 spin_unlock(&tbl->slot_tbl_lock);
4661 dprintk("%s: tbl=%p slots=%p max_slots=%d\n", __func__,
4662 tbl, tbl->slots, tbl->max_slots);
4664 dprintk("<-- %s: return %d\n", __func__, ret);
4669 * Reset the forechannel and backchannel slot tables
4671 static int nfs4_reset_slot_tables(struct nfs4_session *session)
4675 status = nfs4_reset_slot_table(&session->fc_slot_table,
4676 session->fc_attrs.max_reqs, 1);
4680 status = nfs4_reset_slot_table(&session->bc_slot_table,
4681 session->bc_attrs.max_reqs, 0);
4685 /* Destroy the slot table */
4686 static void nfs4_destroy_slot_tables(struct nfs4_session *session)
4688 if (session->fc_slot_table.slots != NULL) {
4689 kfree(session->fc_slot_table.slots);
4690 session->fc_slot_table.slots = NULL;
4692 if (session->bc_slot_table.slots != NULL) {
4693 kfree(session->bc_slot_table.slots);
4694 session->bc_slot_table.slots = NULL;
4700 * Initialize slot table
4702 static int nfs4_init_slot_table(struct nfs4_slot_table *tbl,
4703 int max_slots, int ivalue)
4705 struct nfs4_slot *slot;
4708 BUG_ON(max_slots > NFS4_MAX_SLOT_TABLE);
4710 dprintk("--> %s: max_reqs=%u\n", __func__, max_slots);
4712 slot = kcalloc(max_slots, sizeof(struct nfs4_slot), GFP_NOFS);
4717 spin_lock(&tbl->slot_tbl_lock);
4718 tbl->max_slots = max_slots;
4720 tbl->highest_used_slotid = -1; /* no slot is currently used */
4721 spin_unlock(&tbl->slot_tbl_lock);
4722 dprintk("%s: tbl=%p slots=%p max_slots=%d\n", __func__,
4723 tbl, tbl->slots, tbl->max_slots);
4725 dprintk("<-- %s: return %d\n", __func__, ret);
4730 * Initialize the forechannel and backchannel tables
4732 static int nfs4_init_slot_tables(struct nfs4_session *session)
4734 struct nfs4_slot_table *tbl;
4737 tbl = &session->fc_slot_table;
4738 if (tbl->slots == NULL) {
4739 status = nfs4_init_slot_table(tbl,
4740 session->fc_attrs.max_reqs, 1);
4745 tbl = &session->bc_slot_table;
4746 if (tbl->slots == NULL) {
4747 status = nfs4_init_slot_table(tbl,
4748 session->bc_attrs.max_reqs, 0);
4750 nfs4_destroy_slot_tables(session);
4756 struct nfs4_session *nfs4_alloc_session(struct nfs_client *clp)
4758 struct nfs4_session *session;
4759 struct nfs4_slot_table *tbl;
4761 session = kzalloc(sizeof(struct nfs4_session), GFP_NOFS);
4765 init_completion(&session->complete);
4767 tbl = &session->fc_slot_table;
4768 tbl->highest_used_slotid = -1;
4769 spin_lock_init(&tbl->slot_tbl_lock);
4770 rpc_init_priority_wait_queue(&tbl->slot_tbl_waitq, "ForeChannel Slot table");
4772 tbl = &session->bc_slot_table;
4773 tbl->highest_used_slotid = -1;
4774 spin_lock_init(&tbl->slot_tbl_lock);
4775 rpc_init_wait_queue(&tbl->slot_tbl_waitq, "BackChannel Slot table");
4777 session->session_state = 1<<NFS4_SESSION_INITING;
4783 void nfs4_destroy_session(struct nfs4_session *session)
4785 nfs4_proc_destroy_session(session);
4786 dprintk("%s Destroy backchannel for xprt %p\n",
4787 __func__, session->clp->cl_rpcclient->cl_xprt);
4788 xprt_destroy_backchannel(session->clp->cl_rpcclient->cl_xprt,
4789 NFS41_BC_MIN_CALLBACKS);
4790 nfs4_destroy_slot_tables(session);
4795 * Initialize the values to be used by the client in CREATE_SESSION
4796 * If nfs4_init_session set the fore channel request and response sizes,
4799 * Set the back channel max_resp_sz_cached to zero to force the client to
4800 * always set csa_cachethis to FALSE because the current implementation
4801 * of the back channel DRC only supports caching the CB_SEQUENCE operation.
4803 static void nfs4_init_channel_attrs(struct nfs41_create_session_args *args)
4805 struct nfs4_session *session = args->client->cl_session;
4806 unsigned int mxrqst_sz = session->fc_attrs.max_rqst_sz,
4807 mxresp_sz = session->fc_attrs.max_resp_sz;
4810 mxrqst_sz = NFS_MAX_FILE_IO_SIZE;
4812 mxresp_sz = NFS_MAX_FILE_IO_SIZE;
4813 /* Fore channel attributes */
4814 args->fc_attrs.headerpadsz = 0;
4815 args->fc_attrs.max_rqst_sz = mxrqst_sz;
4816 args->fc_attrs.max_resp_sz = mxresp_sz;
4817 args->fc_attrs.max_ops = NFS4_MAX_OPS;
4818 args->fc_attrs.max_reqs = session->clp->cl_rpcclient->cl_xprt->max_reqs;
4820 dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u "
4821 "max_ops=%u max_reqs=%u\n",
4823 args->fc_attrs.max_rqst_sz, args->fc_attrs.max_resp_sz,
4824 args->fc_attrs.max_ops, args->fc_attrs.max_reqs);
4826 /* Back channel attributes */
4827 args->bc_attrs.headerpadsz = 0;
4828 args->bc_attrs.max_rqst_sz = PAGE_SIZE;
4829 args->bc_attrs.max_resp_sz = PAGE_SIZE;
4830 args->bc_attrs.max_resp_sz_cached = 0;
4831 args->bc_attrs.max_ops = NFS4_MAX_BACK_CHANNEL_OPS;
4832 args->bc_attrs.max_reqs = 1;
4834 dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u "
4835 "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n",
4837 args->bc_attrs.max_rqst_sz, args->bc_attrs.max_resp_sz,
4838 args->bc_attrs.max_resp_sz_cached, args->bc_attrs.max_ops,
4839 args->bc_attrs.max_reqs);
4842 static int _verify_channel_attr(char *chan, char *attr_name, u32 sent, u32 rcvd)
4846 printk(KERN_WARNING "%s: Session INVALID: %s channel %s increased. "
4847 "sent=%u rcvd=%u\n", __func__, chan, attr_name, sent, rcvd);
4851 #define _verify_fore_channel_attr(_name_) \
4852 _verify_channel_attr("fore", #_name_, \
4853 args->fc_attrs._name_, \
4854 session->fc_attrs._name_)
4856 #define _verify_back_channel_attr(_name_) \
4857 _verify_channel_attr("back", #_name_, \
4858 args->bc_attrs._name_, \
4859 session->bc_attrs._name_)
4862 * The server is not allowed to increase the fore channel header pad size,
4863 * maximum response size, or maximum number of operations.
4865 * The back channel attributes are only negotiatied down: We send what the
4866 * (back channel) server insists upon.
4868 static int nfs4_verify_channel_attrs(struct nfs41_create_session_args *args,
4869 struct nfs4_session *session)
4873 ret |= _verify_fore_channel_attr(headerpadsz);
4874 ret |= _verify_fore_channel_attr(max_resp_sz);
4875 ret |= _verify_fore_channel_attr(max_ops);
4877 ret |= _verify_back_channel_attr(headerpadsz);
4878 ret |= _verify_back_channel_attr(max_rqst_sz);
4879 ret |= _verify_back_channel_attr(max_resp_sz);
4880 ret |= _verify_back_channel_attr(max_resp_sz_cached);
4881 ret |= _verify_back_channel_attr(max_ops);
4882 ret |= _verify_back_channel_attr(max_reqs);
4887 static int _nfs4_proc_create_session(struct nfs_client *clp)
4889 struct nfs4_session *session = clp->cl_session;
4890 struct nfs41_create_session_args args = {
4892 .cb_program = NFS4_CALLBACK,
4894 struct nfs41_create_session_res res = {
4897 struct rpc_message msg = {
4898 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE_SESSION],
4904 nfs4_init_channel_attrs(&args);
4905 args.flags = (SESSION4_PERSIST | SESSION4_BACK_CHAN);
4907 status = rpc_call_sync(session->clp->cl_rpcclient, &msg, 0);
4910 /* Verify the session's negotiated channel_attrs values */
4911 status = nfs4_verify_channel_attrs(&args, session);
4913 /* Increment the clientid slot sequence id */
4921 * Issues a CREATE_SESSION operation to the server.
4922 * It is the responsibility of the caller to verify the session is
4923 * expired before calling this routine.
4925 int nfs4_proc_create_session(struct nfs_client *clp)
4929 struct nfs4_session *session = clp->cl_session;
4931 dprintk("--> %s clp=%p session=%p\n", __func__, clp, session);
4933 status = _nfs4_proc_create_session(clp);
4937 /* Init and reset the fore channel */
4938 status = nfs4_init_slot_tables(session);
4939 dprintk("slot table initialization returned %d\n", status);
4942 status = nfs4_reset_slot_tables(session);
4943 dprintk("slot table reset returned %d\n", status);
4947 ptr = (unsigned *)&session->sess_id.data[0];
4948 dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__,
4949 clp->cl_seqid, ptr[0], ptr[1], ptr[2], ptr[3]);
4951 dprintk("<-- %s\n", __func__);
4956 * Issue the over-the-wire RPC DESTROY_SESSION.
4957 * The caller must serialize access to this routine.
4959 int nfs4_proc_destroy_session(struct nfs4_session *session)
4962 struct rpc_message msg;
4964 dprintk("--> nfs4_proc_destroy_session\n");
4966 /* session is still being setup */
4967 if (session->clp->cl_cons_state != NFS_CS_READY)
4970 msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DESTROY_SESSION];
4971 msg.rpc_argp = session;
4972 msg.rpc_resp = NULL;
4973 msg.rpc_cred = NULL;
4974 status = rpc_call_sync(session->clp->cl_rpcclient, &msg, 0);
4978 "Got error %d from the server on DESTROY_SESSION. "
4979 "Session has been destroyed regardless...\n", status);
4981 dprintk("<-- nfs4_proc_destroy_session\n");
4985 int nfs4_init_session(struct nfs_server *server)
4987 struct nfs_client *clp = server->nfs_client;
4988 struct nfs4_session *session;
4989 unsigned int rsize, wsize;
4992 if (!nfs4_has_session(clp))
4995 session = clp->cl_session;
4996 if (!test_and_clear_bit(NFS4_SESSION_INITING, &session->session_state))
4999 rsize = server->rsize;
5001 rsize = NFS_MAX_FILE_IO_SIZE;
5002 wsize = server->wsize;
5004 wsize = NFS_MAX_FILE_IO_SIZE;
5006 session->fc_attrs.max_rqst_sz = wsize + nfs41_maxwrite_overhead;
5007 session->fc_attrs.max_resp_sz = rsize + nfs41_maxread_overhead;
5009 ret = nfs4_recover_expired_lease(server);
5011 ret = nfs4_check_client_ready(clp);
5016 * Renew the cl_session lease.
5018 struct nfs4_sequence_data {
5019 struct nfs_client *clp;
5020 struct nfs4_sequence_args args;
5021 struct nfs4_sequence_res res;
5024 static void nfs41_sequence_release(void *data)
5026 struct nfs4_sequence_data *calldata = data;
5027 struct nfs_client *clp = calldata->clp;
5029 if (atomic_read(&clp->cl_count) > 1)
5030 nfs4_schedule_state_renewal(clp);
5031 nfs_put_client(clp);
5035 static int nfs41_sequence_handle_errors(struct rpc_task *task, struct nfs_client *clp)
5037 switch(task->tk_status) {
5038 case -NFS4ERR_DELAY:
5040 rpc_delay(task, NFS4_POLL_RETRY_MAX);
5043 nfs4_schedule_state_recovery(clp);
5048 static void nfs41_sequence_call_done(struct rpc_task *task, void *data)
5050 struct nfs4_sequence_data *calldata = data;
5051 struct nfs_client *clp = calldata->clp;
5053 if (!nfs41_sequence_done(task, task->tk_msg.rpc_resp))
5056 if (task->tk_status < 0) {
5057 dprintk("%s ERROR %d\n", __func__, task->tk_status);
5058 if (atomic_read(&clp->cl_count) == 1)
5061 if (nfs41_sequence_handle_errors(task, clp) == -EAGAIN) {
5062 rpc_restart_call_prepare(task);
5066 dprintk("%s rpc_cred %p\n", __func__, task->tk_msg.rpc_cred);
5068 dprintk("<-- %s\n", __func__);
5071 static void nfs41_sequence_prepare(struct rpc_task *task, void *data)
5073 struct nfs4_sequence_data *calldata = data;
5074 struct nfs_client *clp = calldata->clp;
5075 struct nfs4_sequence_args *args;
5076 struct nfs4_sequence_res *res;
5078 args = task->tk_msg.rpc_argp;
5079 res = task->tk_msg.rpc_resp;
5081 if (nfs41_setup_sequence(clp->cl_session, args, res, 0, task))
5083 rpc_call_start(task);
5086 static const struct rpc_call_ops nfs41_sequence_ops = {
5087 .rpc_call_done = nfs41_sequence_call_done,
5088 .rpc_call_prepare = nfs41_sequence_prepare,
5089 .rpc_release = nfs41_sequence_release,
5092 static struct rpc_task *_nfs41_proc_sequence(struct nfs_client *clp, struct rpc_cred *cred)
5094 struct nfs4_sequence_data *calldata;
5095 struct rpc_message msg = {
5096 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SEQUENCE],
5099 struct rpc_task_setup task_setup_data = {
5100 .rpc_client = clp->cl_rpcclient,
5101 .rpc_message = &msg,
5102 .callback_ops = &nfs41_sequence_ops,
5103 .flags = RPC_TASK_ASYNC | RPC_TASK_SOFT,
5106 if (!atomic_inc_not_zero(&clp->cl_count))
5107 return ERR_PTR(-EIO);
5108 calldata = kmalloc(sizeof(*calldata), GFP_NOFS);
5109 if (calldata == NULL) {
5110 nfs_put_client(clp);
5111 return ERR_PTR(-ENOMEM);
5113 calldata->res.sr_slotid = NFS4_MAX_SLOT_TABLE;
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:
5183 rpc_delay(task, NFS4_POLL_RETRY_MAX);
5186 nfs4_schedule_state_recovery(clp);
5191 static void nfs4_reclaim_complete_done(struct rpc_task *task, void *data)
5193 struct nfs4_reclaim_complete_data *calldata = data;
5194 struct nfs_client *clp = calldata->clp;
5195 struct nfs4_sequence_res *res = &calldata->res.seq_res;
5197 dprintk("--> %s\n", __func__);
5198 if (!nfs41_sequence_done(task, res))
5201 if (nfs41_reclaim_complete_handle_errors(task, clp) == -EAGAIN) {
5202 rpc_restart_call_prepare(task);
5205 dprintk("<-- %s\n", __func__);
5208 static void nfs4_free_reclaim_complete_data(void *data)
5210 struct nfs4_reclaim_complete_data *calldata = data;
5215 static const struct rpc_call_ops nfs4_reclaim_complete_call_ops = {
5216 .rpc_call_prepare = nfs4_reclaim_complete_prepare,
5217 .rpc_call_done = nfs4_reclaim_complete_done,
5218 .rpc_release = nfs4_free_reclaim_complete_data,
5222 * Issue a global reclaim complete.
5224 static int nfs41_proc_reclaim_complete(struct nfs_client *clp)
5226 struct nfs4_reclaim_complete_data *calldata;
5227 struct rpc_task *task;
5228 struct rpc_message msg = {
5229 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RECLAIM_COMPLETE],
5231 struct rpc_task_setup task_setup_data = {
5232 .rpc_client = clp->cl_rpcclient,
5233 .rpc_message = &msg,
5234 .callback_ops = &nfs4_reclaim_complete_call_ops,
5235 .flags = RPC_TASK_ASYNC,
5237 int status = -ENOMEM;
5239 dprintk("--> %s\n", __func__);
5240 calldata = kzalloc(sizeof(*calldata), GFP_NOFS);
5241 if (calldata == NULL)
5243 calldata->clp = clp;
5244 calldata->arg.one_fs = 0;
5245 calldata->res.seq_res.sr_slotid = NFS4_MAX_SLOT_TABLE;
5247 msg.rpc_argp = &calldata->arg;
5248 msg.rpc_resp = &calldata->res;
5249 task_setup_data.callback_data = calldata;
5250 task = rpc_run_task(&task_setup_data);
5252 status = PTR_ERR(task);
5258 dprintk("<-- %s status=%d\n", __func__, status);
5261 #endif /* CONFIG_NFS_V4_1 */
5263 struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops = {
5264 .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT,
5265 .state_flag_bit = NFS_STATE_RECLAIM_REBOOT,
5266 .recover_open = nfs4_open_reclaim,
5267 .recover_lock = nfs4_lock_reclaim,
5268 .establish_clid = nfs4_init_clientid,
5269 .get_clid_cred = nfs4_get_setclientid_cred,
5272 #if defined(CONFIG_NFS_V4_1)
5273 struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops = {
5274 .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT,
5275 .state_flag_bit = NFS_STATE_RECLAIM_REBOOT,
5276 .recover_open = nfs4_open_reclaim,
5277 .recover_lock = nfs4_lock_reclaim,
5278 .establish_clid = nfs41_init_clientid,
5279 .get_clid_cred = nfs4_get_exchange_id_cred,
5280 .reclaim_complete = nfs41_proc_reclaim_complete,
5282 #endif /* CONFIG_NFS_V4_1 */
5284 struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops = {
5285 .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE,
5286 .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE,
5287 .recover_open = nfs4_open_expired,
5288 .recover_lock = nfs4_lock_expired,
5289 .establish_clid = nfs4_init_clientid,
5290 .get_clid_cred = nfs4_get_setclientid_cred,
5293 #if defined(CONFIG_NFS_V4_1)
5294 struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops = {
5295 .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE,
5296 .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE,
5297 .recover_open = nfs4_open_expired,
5298 .recover_lock = nfs4_lock_expired,
5299 .establish_clid = nfs41_init_clientid,
5300 .get_clid_cred = nfs4_get_exchange_id_cred,
5302 #endif /* CONFIG_NFS_V4_1 */
5304 struct nfs4_state_maintenance_ops nfs40_state_renewal_ops = {
5305 .sched_state_renewal = nfs4_proc_async_renew,
5306 .get_state_renewal_cred_locked = nfs4_get_renew_cred_locked,
5307 .renew_lease = nfs4_proc_renew,
5310 #if defined(CONFIG_NFS_V4_1)
5311 struct nfs4_state_maintenance_ops nfs41_state_renewal_ops = {
5312 .sched_state_renewal = nfs41_proc_async_sequence,
5313 .get_state_renewal_cred_locked = nfs4_get_machine_cred_locked,
5314 .renew_lease = nfs4_proc_sequence,
5318 static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops = {
5320 .call_sync = _nfs4_call_sync,
5321 .validate_stateid = nfs4_validate_delegation_stateid,
5322 .reboot_recovery_ops = &nfs40_reboot_recovery_ops,
5323 .nograce_recovery_ops = &nfs40_nograce_recovery_ops,
5324 .state_renewal_ops = &nfs40_state_renewal_ops,
5327 #if defined(CONFIG_NFS_V4_1)
5328 static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops = {
5330 .call_sync = _nfs4_call_sync_session,
5331 .validate_stateid = nfs41_validate_delegation_stateid,
5332 .reboot_recovery_ops = &nfs41_reboot_recovery_ops,
5333 .nograce_recovery_ops = &nfs41_nograce_recovery_ops,
5334 .state_renewal_ops = &nfs41_state_renewal_ops,
5338 const struct nfs4_minor_version_ops *nfs_v4_minor_ops[] = {
5339 [0] = &nfs_v4_0_minor_ops,
5340 #if defined(CONFIG_NFS_V4_1)
5341 [1] = &nfs_v4_1_minor_ops,
5345 static const struct inode_operations nfs4_file_inode_operations = {
5346 .permission = nfs_permission,
5347 .getattr = nfs_getattr,
5348 .setattr = nfs_setattr,
5349 .getxattr = nfs4_getxattr,
5350 .setxattr = nfs4_setxattr,
5351 .listxattr = nfs4_listxattr,
5354 const struct nfs_rpc_ops nfs_v4_clientops = {
5355 .version = 4, /* protocol version */
5356 .dentry_ops = &nfs4_dentry_operations,
5357 .dir_inode_ops = &nfs4_dir_inode_operations,
5358 .file_inode_ops = &nfs4_file_inode_operations,
5359 .getroot = nfs4_proc_get_root,
5360 .getattr = nfs4_proc_getattr,
5361 .setattr = nfs4_proc_setattr,
5362 .lookupfh = nfs4_proc_lookupfh,
5363 .lookup = nfs4_proc_lookup,
5364 .access = nfs4_proc_access,
5365 .readlink = nfs4_proc_readlink,
5366 .create = nfs4_proc_create,
5367 .remove = nfs4_proc_remove,
5368 .unlink_setup = nfs4_proc_unlink_setup,
5369 .unlink_done = nfs4_proc_unlink_done,
5370 .rename = nfs4_proc_rename,
5371 .rename_setup = nfs4_proc_rename_setup,
5372 .rename_done = nfs4_proc_rename_done,
5373 .link = nfs4_proc_link,
5374 .symlink = nfs4_proc_symlink,
5375 .mkdir = nfs4_proc_mkdir,
5376 .rmdir = nfs4_proc_remove,
5377 .readdir = nfs4_proc_readdir,
5378 .mknod = nfs4_proc_mknod,
5379 .statfs = nfs4_proc_statfs,
5380 .fsinfo = nfs4_proc_fsinfo,
5381 .pathconf = nfs4_proc_pathconf,
5382 .set_capabilities = nfs4_server_capabilities,
5383 .decode_dirent = nfs4_decode_dirent,
5384 .read_setup = nfs4_proc_read_setup,
5385 .read_done = nfs4_read_done,
5386 .write_setup = nfs4_proc_write_setup,
5387 .write_done = nfs4_write_done,
5388 .commit_setup = nfs4_proc_commit_setup,
5389 .commit_done = nfs4_commit_done,
5390 .lock = nfs4_proc_lock,
5391 .clear_acl_cache = nfs4_zap_acl_attr,
5392 .close_context = nfs4_close_context,
5393 .open_context = nfs4_atomic_open,