2 * Copyright (c) 1989, 1993
3 * The Regents of the University of California. All rights reserved.
5 * This code is derived from software contributed to Berkeley by
6 * Rick Macklem at The University of Guelph.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 4. Neither the name of the University nor the names of its contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * from nfs_vnops.c 8.16 (Berkeley) 5/27/95
35 #include <sys/cdefs.h>
36 __FBSDID("$FreeBSD$");
39 * vnode op calls for Sun NFS version 2, 3 and 4
44 #include <sys/param.h>
45 #include <sys/kernel.h>
46 #include <sys/systm.h>
47 #include <sys/resourcevar.h>
49 #include <sys/mount.h>
53 #include <sys/malloc.h>
55 #include <sys/namei.h>
56 #include <sys/socket.h>
57 #include <sys/vnode.h>
58 #include <sys/dirent.h>
59 #include <sys/fcntl.h>
60 #include <sys/lockf.h>
62 #include <sys/sysctl.h>
63 #include <sys/signalvar.h>
66 #include <vm/vm_object.h>
67 #include <vm/vm_extern.h>
68 #include <vm/vm_object.h>
71 #include <fs/nfs/nfsport.h>
72 #include <fs/nfsclient/nfsnode.h>
73 #include <fs/nfsclient/nfsmount.h>
74 #include <fs/nfsclient/nfs.h>
75 #include <fs/nfsclient/nfs_lock.h>
78 #include <netinet/vinet.h>
79 #include <netinet/in.h>
80 #include <netinet/in_var.h>
86 extern struct nfsstats newnfsstats;
87 MALLOC_DECLARE(M_NEWNFSREQ);
88 vop_advlock_t *ncl_advlock_p = ncl_dolock;
91 * Ifdef for FreeBSD-current merged buffer cache. It is unfortunate that these
92 * calls are not in getblk() and brelse() so that they would not be necessary
96 #define vfs_busy_pages(bp, f)
99 static vop_read_t nfsfifo_read;
100 static vop_write_t nfsfifo_write;
101 static vop_close_t nfsfifo_close;
102 static int nfs_setattrrpc(struct vnode *, struct vattr *, struct ucred *,
104 static vop_lookup_t nfs_lookup;
105 static vop_create_t nfs_create;
106 static vop_mknod_t nfs_mknod;
107 static vop_open_t nfs_open;
108 static vop_close_t nfs_close;
109 static vop_access_t nfs_access;
110 static vop_getattr_t nfs_getattr;
111 static vop_setattr_t nfs_setattr;
112 static vop_read_t nfs_read;
113 static vop_fsync_t nfs_fsync;
114 static vop_remove_t nfs_remove;
115 static vop_link_t nfs_link;
116 static vop_rename_t nfs_rename;
117 static vop_mkdir_t nfs_mkdir;
118 static vop_rmdir_t nfs_rmdir;
119 static vop_symlink_t nfs_symlink;
120 static vop_readdir_t nfs_readdir;
121 static vop_strategy_t nfs_strategy;
122 static vop_lock1_t nfs_lock1;
123 static int nfs_lookitup(struct vnode *, char *, int,
124 struct ucred *, struct thread *, struct nfsnode **);
125 static int nfs_sillyrename(struct vnode *, struct vnode *,
126 struct componentname *);
127 static vop_access_t nfsspec_access;
128 static vop_readlink_t nfs_readlink;
129 static vop_print_t nfs_print;
130 static vop_advlock_t nfs_advlock;
131 static vop_advlockasync_t nfs_advlockasync;
132 #ifdef NFS4_ACL_EXTATTR_NAME
133 static vop_getacl_t nfs_getacl;
134 static vop_setacl_t nfs_setacl;
138 * Global vfs data structures for nfs
140 struct vop_vector newnfs_vnodeops = {
141 .vop_default = &default_vnodeops,
142 .vop_access = nfs_access,
143 .vop_advlock = nfs_advlock,
144 .vop_advlockasync = nfs_advlockasync,
145 .vop_close = nfs_close,
146 .vop_create = nfs_create,
147 .vop_fsync = nfs_fsync,
148 .vop_getattr = nfs_getattr,
149 .vop_getpages = ncl_getpages,
150 .vop_putpages = ncl_putpages,
151 .vop_inactive = ncl_inactive,
152 .vop_link = nfs_link,
153 .vop_lock1 = nfs_lock1,
154 .vop_lookup = nfs_lookup,
155 .vop_mkdir = nfs_mkdir,
156 .vop_mknod = nfs_mknod,
157 .vop_open = nfs_open,
158 .vop_print = nfs_print,
159 .vop_read = nfs_read,
160 .vop_readdir = nfs_readdir,
161 .vop_readlink = nfs_readlink,
162 .vop_reclaim = ncl_reclaim,
163 .vop_remove = nfs_remove,
164 .vop_rename = nfs_rename,
165 .vop_rmdir = nfs_rmdir,
166 .vop_setattr = nfs_setattr,
167 .vop_strategy = nfs_strategy,
168 .vop_symlink = nfs_symlink,
169 .vop_write = ncl_write,
170 #ifdef NFS4_ACL_EXTATTR_NAME
171 .vop_getacl = nfs_getacl,
172 .vop_setacl = nfs_setacl,
176 struct vop_vector newnfs_fifoops = {
177 .vop_default = &fifo_specops,
178 .vop_access = nfsspec_access,
179 .vop_close = nfsfifo_close,
180 .vop_fsync = nfs_fsync,
181 .vop_getattr = nfs_getattr,
182 .vop_inactive = ncl_inactive,
183 .vop_print = nfs_print,
184 .vop_read = nfsfifo_read,
185 .vop_reclaim = ncl_reclaim,
186 .vop_setattr = nfs_setattr,
187 .vop_write = nfsfifo_write,
190 static int nfs_mknodrpc(struct vnode *dvp, struct vnode **vpp,
191 struct componentname *cnp, struct vattr *vap);
192 static int nfs_removerpc(struct vnode *dvp, struct vnode *vp, char *name,
193 int namelen, struct ucred *cred, struct thread *td);
194 static int nfs_renamerpc(struct vnode *fdvp, struct vnode *fvp,
195 char *fnameptr, int fnamelen, struct vnode *tdvp, struct vnode *tvp,
196 char *tnameptr, int tnamelen, struct ucred *cred, struct thread *td);
197 static int nfs_renameit(struct vnode *sdvp, struct vnode *svp,
198 struct componentname *scnp, struct sillyrename *sp);
203 #define DIRHDSIZ (sizeof (struct dirent) - (MAXNAMLEN + 1))
205 SYSCTL_DECL(_vfs_newnfs);
207 static int nfsaccess_cache_timeout = NFS_MAXATTRTIMO;
208 SYSCTL_INT(_vfs_newnfs, OID_AUTO, access_cache_timeout, CTLFLAG_RW,
209 &nfsaccess_cache_timeout, 0, "NFS ACCESS cache timeout");
211 static int nfs_prime_access_cache = 0;
212 SYSCTL_INT(_vfs_newnfs, OID_AUTO, prime_access_cache, CTLFLAG_RW,
213 &nfs_prime_access_cache, 0,
214 "Prime NFS ACCESS cache when fetching attributes");
216 static int newnfs_commit_on_close = 0;
217 SYSCTL_INT(_vfs_newnfs, OID_AUTO, commit_on_close, CTLFLAG_RW,
218 &newnfs_commit_on_close, 0, "write+commit on close, else only write");
220 static int nfs_clean_pages_on_close = 1;
221 SYSCTL_INT(_vfs_newnfs, OID_AUTO, clean_pages_on_close, CTLFLAG_RW,
222 &nfs_clean_pages_on_close, 0, "NFS clean dirty pages on close");
224 int newnfs_directio_enable = 0;
225 SYSCTL_INT(_vfs_newnfs, OID_AUTO, directio_enable, CTLFLAG_RW,
226 &newnfs_directio_enable, 0, "Enable NFS directio");
228 static int newnfs_neglookup_enable = 1;
229 SYSCTL_INT(_vfs_newnfs, OID_AUTO, neglookup_enable, CTLFLAG_RW,
230 &newnfs_neglookup_enable, 0, "Enable NFS negative lookup caching");
233 * This sysctl allows other processes to mmap a file that has been opened
234 * O_DIRECT by a process. In general, having processes mmap the file while
235 * Direct IO is in progress can lead to Data Inconsistencies. But, we allow
236 * this by default to prevent DoS attacks - to prevent a malicious user from
237 * opening up files O_DIRECT preventing other users from mmap'ing these
238 * files. "Protected" environments where stricter consistency guarantees are
239 * required can disable this knob. The process that opened the file O_DIRECT
240 * cannot mmap() the file, because mmap'ed IO on an O_DIRECT open() is not
243 int newnfs_directio_allow_mmap = 1;
244 SYSCTL_INT(_vfs_newnfs, OID_AUTO, directio_allow_mmap, CTLFLAG_RW,
245 &newnfs_directio_allow_mmap, 0, "Enable mmaped IO on file with O_DIRECT opens");
248 SYSCTL_INT(_vfs_newnfs, OID_AUTO, access_cache_hits, CTLFLAG_RD,
249 &newnfsstats.accesscache_hits, 0, "NFS ACCESS cache hit count");
251 SYSCTL_INT(_vfs_newnfs, OID_AUTO, access_cache_misses, CTLFLAG_RD,
252 &newnfsstats.accesscache_misses, 0, "NFS ACCESS cache miss count");
255 #define NFSACCESS_ALL (NFSACCESS_READ | NFSACCESS_MODIFY \
256 | NFSACCESS_EXTEND | NFSACCESS_EXECUTE \
257 | NFSACCESS_DELETE | NFSACCESS_LOOKUP)
261 * The list of locks after the description of the lock is the ordering
262 * of other locks acquired with the lock held.
263 * np->n_mtx : Protects the fields in the nfsnode.
265 VI_MTX (acquired indirectly)
266 * nmp->nm_mtx : Protects the fields in the nfsmount.
268 * ncl_iod_mutex : Global lock, protects shared nfsiod state.
269 * nfs_reqq_mtx : Global lock, protects the nfs_reqq list.
272 * rep->r_mtx : Protects the fields in an nfsreq.
276 nfs34_access_otw(struct vnode *vp, int wmode, struct thread *td,
277 struct ucred *cred, u_int32_t *retmode)
279 int error = 0, attrflag, i, lrupos;
281 struct nfsnode *np = VTONFS(vp);
282 struct nfsvattr nfsva;
284 error = nfsrpc_accessrpc(vp, wmode, cred, td, &nfsva, &attrflag,
287 (void) nfscl_loadattrcache(&vp, &nfsva, NULL, NULL, 0, 1);
290 mtx_lock(&np->n_mtx);
291 for (i = 0; i < NFS_ACCESSCACHESIZE; i++) {
292 if (np->n_accesscache[i].uid == cred->cr_uid) {
293 np->n_accesscache[i].mode = rmode;
294 np->n_accesscache[i].stamp = time_second;
297 if (i > 0 && np->n_accesscache[i].stamp <
298 np->n_accesscache[lrupos].stamp)
301 if (i == NFS_ACCESSCACHESIZE) {
302 np->n_accesscache[lrupos].uid = cred->cr_uid;
303 np->n_accesscache[lrupos].mode = rmode;
304 np->n_accesscache[lrupos].stamp = time_second;
306 mtx_unlock(&np->n_mtx);
309 } else if (NFS_ISV4(vp)) {
310 error = nfscl_maperr(td, error, (uid_t)0, (gid_t)0);
316 * nfs access vnode op.
317 * For nfs version 2, just return ok. File accesses may fail later.
318 * For nfs version 3, use the access rpc to check accessibility. If file modes
319 * are changed on the server, accesses might still fail later.
322 nfs_access(struct vop_access_args *ap)
324 struct vnode *vp = ap->a_vp;
325 int error = 0, i, gotahit;
326 u_int32_t mode, wmode, rmode;
327 int v34 = NFS_ISV34(vp);
328 struct nfsnode *np = VTONFS(vp);
331 * Disallow write attempts on filesystems mounted read-only;
332 * unless the file is a socket, fifo, or a block or character
333 * device resident on the filesystem.
335 if ((ap->a_accmode & (VWRITE | VAPPEND
336 #ifdef NFS4_ACL_EXTATTR_NAME
337 | VWRITE_NAMED_ATTRS | VDELETE_CHILD | VWRITE_ATTRIBUTES |
338 VDELETE | VWRITE_ACL | VWRITE_OWNER
340 )) != 0 && (vp->v_mount->mnt_flag & MNT_RDONLY) != 0) {
341 switch (vp->v_type) {
351 * For nfs v3 or v4, check to see if we have done this recently, and if
352 * so return our cached result instead of making an ACCESS call.
353 * If not, do an access rpc, otherwise you are stuck emulating
354 * ufs_access() locally using the vattr. This may not be correct,
355 * since the server may apply other access criteria such as
356 * client uid-->server uid mapping that we do not know about.
359 if (ap->a_accmode & VREAD)
360 mode = NFSACCESS_READ;
363 if (vp->v_type != VDIR) {
364 if (ap->a_accmode & VWRITE)
365 mode |= (NFSACCESS_MODIFY | NFSACCESS_EXTEND);
366 if (ap->a_accmode & VAPPEND)
367 mode |= NFSACCESS_EXTEND;
368 if (ap->a_accmode & VEXEC)
369 mode |= NFSACCESS_EXECUTE;
370 #ifdef NFS4_ACL_EXTATTR_NAME
371 if (ap->a_accmode & VDELETE)
372 mode |= NFSACCESS_DELETE;
375 if (ap->a_accmode & VWRITE)
376 mode |= (NFSACCESS_MODIFY | NFSACCESS_EXTEND);
377 if (ap->a_accmode & VAPPEND)
378 mode |= NFSACCESS_EXTEND;
379 if (ap->a_accmode & VEXEC)
380 mode |= NFSACCESS_LOOKUP;
381 #ifdef NFS4_ACL_EXTATTR_NAME
382 if (ap->a_accmode & VDELETE)
383 mode |= NFSACCESS_DELETE;
384 if (ap->a_accmode & VDELETE_CHILD)
385 mode |= NFSACCESS_MODIFY;
388 /* XXX safety belt, only make blanket request if caching */
389 if (nfsaccess_cache_timeout > 0) {
390 wmode = NFSACCESS_READ | NFSACCESS_MODIFY |
391 NFSACCESS_EXTEND | NFSACCESS_EXECUTE |
392 NFSACCESS_DELETE | NFSACCESS_LOOKUP;
398 * Does our cached result allow us to give a definite yes to
402 mtx_lock(&np->n_mtx);
403 for (i = 0; i < NFS_ACCESSCACHESIZE; i++) {
404 if (ap->a_cred->cr_uid == np->n_accesscache[i].uid) {
405 if (time_second < (np->n_accesscache[i].stamp
406 + nfsaccess_cache_timeout) &&
407 (np->n_accesscache[i].mode & mode) == mode) {
408 NFSINCRGLOBAL(newnfsstats.accesscache_hits);
414 mtx_unlock(&np->n_mtx);
417 * Either a no, or a don't know. Go to the wire.
419 NFSINCRGLOBAL(newnfsstats.accesscache_misses);
420 error = nfs34_access_otw(vp, wmode, ap->a_td,
423 (rmode & mode) != mode)
428 if ((error = nfsspec_access(ap)) != 0) {
432 * Attempt to prevent a mapped root from accessing a file
433 * which it shouldn't. We try to read a byte from the file
434 * if the user is root and the file is not zero length.
435 * After calling nfsspec_access, we should have the correct
438 mtx_lock(&np->n_mtx);
439 if (ap->a_cred->cr_uid == 0 && (ap->a_accmode & VREAD)
440 && VTONFS(vp)->n_size > 0) {
445 mtx_unlock(&np->n_mtx);
448 auio.uio_iov = &aiov;
452 auio.uio_segflg = UIO_SYSSPACE;
453 auio.uio_rw = UIO_READ;
454 auio.uio_td = ap->a_td;
456 if (vp->v_type == VREG)
457 error = ncl_readrpc(vp, &auio, ap->a_cred);
458 else if (vp->v_type == VDIR) {
460 bp = malloc(NFS_DIRBLKSIZ, M_TEMP, M_WAITOK);
462 aiov.iov_len = auio.uio_resid = NFS_DIRBLKSIZ;
463 error = ncl_readdirrpc(vp, &auio, ap->a_cred,
466 } else if (vp->v_type == VLNK)
467 error = ncl_readlinkrpc(vp, &auio, ap->a_cred);
471 mtx_unlock(&np->n_mtx);
479 * Check to see if the type is ok
480 * and that deletion is not in progress.
481 * For paged in text files, you will need to flush the page cache
482 * if consistency is lost.
486 nfs_open(struct vop_open_args *ap)
488 struct vnode *vp = ap->a_vp;
489 struct nfsnode *np = VTONFS(vp);
492 int fmode = ap->a_mode;
494 if (vp->v_type != VREG && vp->v_type != VDIR && vp->v_type != VLNK)
498 * For NFSv4, we need to do the Open Op before cache validation,
499 * so that we conform to RFC3530 Sec. 9.3.1.
502 error = nfsrpc_open(vp, fmode, ap->a_cred, ap->a_td);
504 error = nfscl_maperr(ap->a_td, error, (uid_t)0,
511 * Now, if this Open will be doing reading, re-validate/flush the
512 * cache, so that Close/Open coherency is maintained.
514 if ((fmode & FREAD) && (!NFS_ISV4(vp) || nfscl_mustflush(vp))) {
515 mtx_lock(&np->n_mtx);
516 if (np->n_flag & NMODIFIED) {
517 mtx_unlock(&np->n_mtx);
518 error = ncl_vinvalbuf(vp, V_SAVE, ap->a_td, 1);
519 if (error == EINTR || error == EIO) {
521 (void) nfsrpc_close(vp, 0, ap->a_td);
525 if (vp->v_type == VDIR)
526 np->n_direofoffset = 0;
527 error = VOP_GETATTR(vp, &vattr, ap->a_cred);
530 (void) nfsrpc_close(vp, 0, ap->a_td);
533 mtx_lock(&np->n_mtx);
534 np->n_mtime = vattr.va_mtime;
536 np->n_change = vattr.va_filerev;
537 mtx_unlock(&np->n_mtx);
539 struct thread *td = curthread;
541 if (np->n_ac_ts_syscalls != td->td_syscalls ||
542 np->n_ac_ts_tid != td->td_tid ||
543 td->td_proc == NULL ||
544 np->n_ac_ts_pid != td->td_proc->p_pid) {
547 mtx_unlock(&np->n_mtx);
548 error = VOP_GETATTR(vp, &vattr, ap->a_cred);
551 (void) nfsrpc_close(vp, 0, ap->a_td);
554 mtx_lock(&np->n_mtx);
555 if ((NFS_ISV4(vp) && np->n_change != vattr.va_filerev) ||
556 NFS_TIMESPEC_COMPARE(&np->n_mtime, &vattr.va_mtime)) {
557 if (vp->v_type == VDIR)
558 np->n_direofoffset = 0;
559 mtx_unlock(&np->n_mtx);
560 error = ncl_vinvalbuf(vp, V_SAVE, ap->a_td, 1);
561 if (error == EINTR || error == EIO) {
563 (void) nfsrpc_close(vp, 0,
567 mtx_lock(&np->n_mtx);
568 np->n_mtime = vattr.va_mtime;
570 np->n_change = vattr.va_filerev;
572 mtx_unlock(&np->n_mtx);
577 * If the object has >= 1 O_DIRECT active opens, we disable caching.
579 if (newnfs_directio_enable && (fmode & O_DIRECT) && (vp->v_type == VREG)) {
580 if (np->n_directio_opens == 0) {
581 error = ncl_vinvalbuf(vp, V_SAVE, ap->a_td, 1);
584 (void) nfsrpc_close(vp, 0, ap->a_td);
587 mtx_lock(&np->n_mtx);
588 np->n_flag |= NNONCACHE;
590 mtx_lock(&np->n_mtx);
592 np->n_directio_opens++;
593 mtx_unlock(&np->n_mtx);
595 vnode_create_vobject(vp, vattr.va_size, ap->a_td);
601 * What an NFS client should do upon close after writing is a debatable issue.
602 * Most NFS clients push delayed writes to the server upon close, basically for
604 * 1 - So that any write errors may be reported back to the client process
605 * doing the close system call. By far the two most likely errors are
606 * NFSERR_NOSPC and NFSERR_DQUOT to indicate space allocation failure.
607 * 2 - To put a worst case upper bound on cache inconsistency between
608 * multiple clients for the file.
609 * There is also a consistency problem for Version 2 of the protocol w.r.t.
610 * not being able to tell if other clients are writing a file concurrently,
611 * since there is no way of knowing if the changed modify time in the reply
612 * is only due to the write for this client.
613 * (NFS Version 3 provides weak cache consistency data in the reply that
614 * should be sufficient to detect and handle this case.)
616 * The current code does the following:
617 * for NFS Version 2 - play it safe and flush/invalidate all dirty buffers
618 * for NFS Version 3 - flush dirty buffers to the server but don't invalidate
619 * or commit them (this satisfies 1 and 2 except for the
620 * case where the server crashes after this close but
621 * before the commit RPC, which is felt to be "good
622 * enough". Changing the last argument to ncl_flush() to
623 * a 1 would force a commit operation, if it is felt a
624 * commit is necessary now.
625 * for NFS Version 4 - flush the dirty buffers and commit them, if
626 * nfscl_mustflush() says this is necessary.
627 * It is necessary if there is no write delegation held,
628 * in order to satisfy open/close coherency.
629 * If the file isn't cached on local stable storage,
630 * it may be necessary in order to detect "out of space"
631 * errors from the server, if the write delegation
632 * issued by the server doesn't allow the file to grow.
636 nfs_close(struct vop_close_args *ap)
638 struct vnode *vp = ap->a_vp;
639 struct nfsnode *np = VTONFS(vp);
640 struct nfsvattr nfsva;
642 int error = 0, ret, localcred = 0;
643 int fmode = ap->a_fflag;
645 if ((vp->v_mount->mnt_kern_flag & MNTK_UNMOUNTF))
648 * During shutdown, a_cred isn't valid, so just use root.
650 if (ap->a_cred == NOCRED) {
651 cred = newnfs_getcred();
656 if (vp->v_type == VREG) {
658 * Examine and clean dirty pages, regardless of NMODIFIED.
659 * This closes a major hole in close-to-open consistency.
660 * We want to push out all dirty pages (and buffers) on
661 * close, regardless of whether they were dirtied by
662 * mmap'ed writes or via write().
664 if (nfs_clean_pages_on_close && vp->v_object) {
665 VM_OBJECT_LOCK(vp->v_object);
666 vm_object_page_clean(vp->v_object, 0, 0, 0);
667 VM_OBJECT_UNLOCK(vp->v_object);
669 mtx_lock(&np->n_mtx);
670 if (np->n_flag & NMODIFIED) {
671 mtx_unlock(&np->n_mtx);
674 * Under NFSv3 we have dirty buffers to dispose of. We
675 * must flush them to the NFS server. We have the option
676 * of waiting all the way through the commit rpc or just
677 * waiting for the initial write. The default is to only
678 * wait through the initial write so the data is in the
679 * server's cache, which is roughly similar to the state
680 * a standard disk subsystem leaves the file in on close().
682 * We cannot clear the NMODIFIED bit in np->n_flag due to
683 * potential races with other processes, and certainly
684 * cannot clear it if we don't commit.
685 * These races occur when there is no longer the old
686 * traditional vnode locking implemented for Vnode Ops.
688 int cm = newnfs_commit_on_close ? 1 : 0;
689 error = ncl_flush(vp, MNT_WAIT, cred, ap->a_td, cm);
690 /* np->n_flag &= ~NMODIFIED; */
691 } else if (NFS_ISV4(vp) && nfscl_mustflush(vp)) {
692 int cm = newnfs_commit_on_close ? 1 : 0;
693 error = ncl_flush(vp, MNT_WAIT, cred, ap->a_td, cm);
694 /* as above w.r.t. races when clearing NMODIFIED */
695 /* np->n_flag &= ~NMODIFIED; */
697 error = ncl_vinvalbuf(vp, V_SAVE, ap->a_td, 1);
698 mtx_lock(&np->n_mtx);
701 * Invalidate the attribute cache in all cases.
702 * An open is going to fetch fresh attrs any way, other procs
703 * on this node that have file open will be forced to do an
704 * otw attr fetch, but this is safe.
705 * --> A user found that their RPC count dropped by 20% when
706 * this was commented out and I can't see any requirement
707 * for it, so I've disabled it when negative lookups are
708 * enabled. (What does this have to do with negative lookup
709 * caching? Well nothing, except it was reported by the
710 * same user that needed negative lookup caching and I wanted
711 * there to be a way to disable it via sysctl to see if it
712 * is the cause of some caching/coherency issue that might
715 if (newnfs_neglookup_enable == 0)
717 if (np->n_flag & NWRITEERR) {
718 np->n_flag &= ~NWRITEERR;
721 mtx_unlock(&np->n_mtx);
726 * Get attributes so "change" is up to date.
729 ret = nfsrpc_getattr(vp, cred, ap->a_td, &nfsva,
732 np->n_change = nfsva.na_filerev;
733 (void) nfscl_loadattrcache(&vp, &nfsva, NULL,
741 ret = nfsrpc_close(vp, 0, ap->a_td);
745 error = nfscl_maperr(ap->a_td, error, (uid_t)0,
748 if (newnfs_directio_enable)
749 KASSERT((np->n_directio_asyncwr == 0),
750 ("nfs_close: dirty unflushed (%d) directio buffers\n",
751 np->n_directio_asyncwr));
752 if (newnfs_directio_enable && (fmode & O_DIRECT) && (vp->v_type == VREG)) {
753 mtx_lock(&np->n_mtx);
754 KASSERT((np->n_directio_opens > 0),
755 ("nfs_close: unexpectedly value (0) of n_directio_opens\n"));
756 np->n_directio_opens--;
757 if (np->n_directio_opens == 0)
758 np->n_flag &= ~NNONCACHE;
759 mtx_unlock(&np->n_mtx);
767 * nfs getattr call from vfs.
770 nfs_getattr(struct vop_getattr_args *ap)
772 struct vnode *vp = ap->a_vp;
773 struct thread *td = curthread; /* XXX */
774 struct nfsnode *np = VTONFS(vp);
776 struct nfsvattr nfsva;
777 struct vattr *vap = ap->a_vap;
781 * Update local times for special files.
783 mtx_lock(&np->n_mtx);
784 if (np->n_flag & (NACC | NUPD))
786 mtx_unlock(&np->n_mtx);
788 * First look in the cache.
790 if (ncl_getattrcache(vp, &vattr) == 0) {
791 vap->va_type = vattr.va_type;
792 vap->va_mode = vattr.va_mode;
793 vap->va_nlink = vattr.va_nlink;
794 vap->va_uid = vattr.va_uid;
795 vap->va_gid = vattr.va_gid;
796 vap->va_fsid = vattr.va_fsid;
797 vap->va_fileid = vattr.va_fileid;
798 vap->va_size = vattr.va_size;
799 vap->va_blocksize = vattr.va_blocksize;
800 vap->va_atime = vattr.va_atime;
801 vap->va_mtime = vattr.va_mtime;
802 vap->va_ctime = vattr.va_ctime;
803 vap->va_gen = vattr.va_gen;
804 vap->va_flags = vattr.va_flags;
805 vap->va_rdev = vattr.va_rdev;
806 vap->va_bytes = vattr.va_bytes;
807 vap->va_filerev = vattr.va_filerev;
809 * Get the local modify time for the case of a write
812 nfscl_deleggetmodtime(vp, &vap->va_mtime);
816 if (NFS_ISV34(vp) && nfs_prime_access_cache &&
817 nfsaccess_cache_timeout > 0) {
818 NFSINCRGLOBAL(newnfsstats.accesscache_misses);
819 nfs34_access_otw(vp, NFSACCESS_ALL, td, ap->a_cred, NULL);
820 if (ncl_getattrcache(vp, ap->a_vap) == 0) {
821 nfscl_deleggetmodtime(vp, &ap->a_vap->va_mtime);
825 error = nfsrpc_getattr(vp, ap->a_cred, td, &nfsva, NULL);
827 error = nfscl_loadattrcache(&vp, &nfsva, vap, NULL, 0, 0);
830 * Get the local modify time for the case of a write
833 nfscl_deleggetmodtime(vp, &vap->va_mtime);
834 } else if (NFS_ISV4(vp)) {
835 error = nfscl_maperr(td, error, (uid_t)0, (gid_t)0);
844 nfs_setattr(struct vop_setattr_args *ap)
846 struct vnode *vp = ap->a_vp;
847 struct nfsnode *np = VTONFS(vp);
848 struct thread *td = curthread; /* XXX */
849 struct vattr *vap = ap->a_vap;
858 * Setting of flags and marking of atimes are not supported.
860 if (vap->va_flags != VNOVAL)
864 * Disallow write attempts if the filesystem is mounted read-only.
866 if ((vap->va_flags != VNOVAL || vap->va_uid != (uid_t)VNOVAL ||
867 vap->va_gid != (gid_t)VNOVAL || vap->va_atime.tv_sec != VNOVAL ||
868 vap->va_mtime.tv_sec != VNOVAL || vap->va_mode != (mode_t)VNOVAL) &&
869 (vp->v_mount->mnt_flag & MNT_RDONLY))
871 if (vap->va_size != VNOVAL) {
872 switch (vp->v_type) {
879 if (vap->va_mtime.tv_sec == VNOVAL &&
880 vap->va_atime.tv_sec == VNOVAL &&
881 vap->va_mode == (mode_t)VNOVAL &&
882 vap->va_uid == (uid_t)VNOVAL &&
883 vap->va_gid == (gid_t)VNOVAL)
885 vap->va_size = VNOVAL;
889 * Disallow write attempts if the filesystem is
892 if (vp->v_mount->mnt_flag & MNT_RDONLY)
895 * We run vnode_pager_setsize() early (why?),
896 * we must set np->n_size now to avoid vinvalbuf
897 * V_SAVE races that might setsize a lower
900 mtx_lock(&np->n_mtx);
902 mtx_unlock(&np->n_mtx);
903 error = ncl_meta_setsize(vp, ap->a_cred, td,
905 mtx_lock(&np->n_mtx);
906 if (np->n_flag & NMODIFIED) {
908 mtx_unlock(&np->n_mtx);
909 if (vap->va_size == 0)
910 error = ncl_vinvalbuf(vp, 0, td, 1);
912 error = ncl_vinvalbuf(vp, V_SAVE, td, 1);
914 vnode_pager_setsize(vp, tsize);
918 * Call nfscl_delegmodtime() to set the modify time
919 * locally, as required.
921 nfscl_delegmodtime(vp);
923 mtx_unlock(&np->n_mtx);
925 * np->n_size has already been set to vap->va_size
926 * in ncl_meta_setsize(). We must set it again since
927 * nfs_loadattrcache() could be called through
928 * ncl_meta_setsize() and could modify np->n_size.
930 mtx_lock(&np->n_mtx);
931 np->n_vattr.na_size = np->n_size = vap->va_size;
932 mtx_unlock(&np->n_mtx);
935 mtx_lock(&np->n_mtx);
936 if ((vap->va_mtime.tv_sec != VNOVAL || vap->va_atime.tv_sec != VNOVAL) &&
937 (np->n_flag & NMODIFIED) && vp->v_type == VREG) {
938 mtx_unlock(&np->n_mtx);
939 if ((error = ncl_vinvalbuf(vp, V_SAVE, td, 1)) != 0 &&
940 (error == EINTR || error == EIO))
943 mtx_unlock(&np->n_mtx);
945 error = nfs_setattrrpc(vp, vap, ap->a_cred, td);
946 if (error && vap->va_size != VNOVAL) {
947 mtx_lock(&np->n_mtx);
948 np->n_size = np->n_vattr.na_size = tsize;
949 vnode_pager_setsize(vp, tsize);
950 mtx_unlock(&np->n_mtx);
956 * Do an nfs setattr rpc.
959 nfs_setattrrpc(struct vnode *vp, struct vattr *vap, struct ucred *cred,
962 struct nfsnode *np = VTONFS(vp);
963 int error, ret, attrflag, i;
964 struct nfsvattr nfsva;
967 mtx_lock(&np->n_mtx);
968 for (i = 0; i < NFS_ACCESSCACHESIZE; i++)
969 np->n_accesscache[i].stamp = 0;
970 np->n_flag |= NDELEGMOD;
971 mtx_unlock(&np->n_mtx);
973 error = nfsrpc_setattr(vp, vap, NULL, cred, td, &nfsva, &attrflag,
976 ret = nfscl_loadattrcache(&vp, &nfsva, NULL, NULL, 0, 1);
980 if (error && NFS_ISV4(vp))
981 error = nfscl_maperr(td, error, vap->va_uid, vap->va_gid);
986 * nfs lookup call, one step at a time...
987 * First look in cache
988 * If not found, unlock the directory nfsnode and do the rpc
991 nfs_lookup(struct vop_lookup_args *ap)
993 struct componentname *cnp = ap->a_cnp;
994 struct vnode *dvp = ap->a_dvp;
995 struct vnode **vpp = ap->a_vpp;
996 struct mount *mp = dvp->v_mount;
997 int flags = cnp->cn_flags;
999 struct nfsmount *nmp;
1001 int error = 0, attrflag, dattrflag, ltype;
1002 struct thread *td = cnp->cn_thread;
1004 struct nfsvattr dnfsva, nfsva;
1007 if ((flags & ISLASTCN) && (mp->mnt_flag & MNT_RDONLY) &&
1008 (cnp->cn_nameiop == DELETE || cnp->cn_nameiop == RENAME))
1010 if (dvp->v_type != VDIR)
1015 /* For NFSv4, wait until any remove is done. */
1016 mtx_lock(&np->n_mtx);
1017 while (NFSHASNFSV4(nmp) && (np->n_flag & NREMOVEINPROG)) {
1018 np->n_flag |= NREMOVEWANT;
1019 (void) msleep((caddr_t)np, &np->n_mtx, PZERO, "nfslkup", 0);
1021 mtx_unlock(&np->n_mtx);
1023 if ((error = VOP_ACCESS(dvp, VEXEC, cnp->cn_cred, td)) != 0)
1025 if ((error = cache_lookup(dvp, vpp, cnp)) &&
1026 (error != ENOENT || newnfs_neglookup_enable != 0)) {
1029 if (error == ENOENT) {
1030 if (!VOP_GETATTR(dvp, &vattr, cnp->cn_cred) &&
1031 vattr.va_mtime.tv_sec == np->n_dmtime) {
1032 NFSINCRGLOBAL(newnfsstats.lookupcache_hits);
1035 cache_purge_negative(dvp);
1039 if (nfscl_nodeleg(newvp, 0) == 0 ||
1040 (!VOP_GETATTR(newvp, &vattr, cnp->cn_cred) &&
1041 vattr.va_ctime.tv_sec==VTONFS(newvp)->n_ctime)) {
1042 NFSINCRGLOBAL(newnfsstats.lookupcache_hits);
1043 if (cnp->cn_nameiop != LOOKUP &&
1045 cnp->cn_flags |= SAVENAME;
1058 NFSINCRGLOBAL(newnfsstats.lookupcache_misses);
1059 error = nfsrpc_lookup(dvp, cnp->cn_nameptr, cnp->cn_namelen,
1060 cnp->cn_cred, td, &dnfsva, &nfsva, &nfhp, &attrflag, &dattrflag,
1063 (void) nfscl_loadattrcache(&dvp, &dnfsva, NULL, NULL, 0, 1);
1065 if (newnfs_neglookup_enable != 0 &&
1066 error == ENOENT && (cnp->cn_flags & MAKEENTRY) &&
1067 cnp->cn_nameiop != CREATE) {
1068 if (np->n_dmtime == 0)
1069 np->n_dmtime = np->n_vattr.na_mtime.tv_sec;
1070 cache_enter(dvp, NULL, cnp);
1072 if (newvp != NULLVP) {
1076 if ((cnp->cn_nameiop == CREATE || cnp->cn_nameiop == RENAME) &&
1077 (flags & ISLASTCN) && error == ENOENT) {
1078 if (mp->mnt_flag & MNT_RDONLY)
1081 error = EJUSTRETURN;
1083 if (cnp->cn_nameiop != LOOKUP && (flags & ISLASTCN))
1084 cnp->cn_flags |= SAVENAME;
1086 error = nfscl_maperr(td, error, (uid_t)0, (gid_t)0);
1091 * Handle RENAME case...
1093 if (cnp->cn_nameiop == RENAME && (flags & ISLASTCN)) {
1094 if (NFS_CMPFH(np, nfhp->nfh_fh, nfhp->nfh_len)) {
1095 FREE((caddr_t)nfhp, M_NFSFH);
1098 error = nfscl_nget(mp, dvp, nfhp, cnp, td, &np, NULL);
1103 (void) nfscl_loadattrcache(&newvp, &nfsva, NULL, NULL,
1106 cnp->cn_flags |= SAVENAME;
1110 if (flags & ISDOTDOT) {
1111 ltype = VOP_ISLOCKED(dvp);
1112 error = vfs_busy(mp, MBF_NOWAIT);
1115 error = vfs_busy(mp, 0);
1116 vn_lock(dvp, ltype | LK_RETRY);
1117 if (error == 0 && (dvp->v_iflag & VI_DOOMED)) {
1125 error = nfscl_nget(mp, dvp, nfhp, cnp, td, &np, NULL);
1129 vn_lock(dvp, ltype | LK_RETRY);
1130 if (dvp->v_iflag & VI_DOOMED) {
1142 (void) nfscl_loadattrcache(&newvp, &nfsva, NULL, NULL,
1144 } else if (NFS_CMPFH(np, nfhp->nfh_fh, nfhp->nfh_len)) {
1145 FREE((caddr_t)nfhp, M_NFSFH);
1149 (void) nfscl_loadattrcache(&newvp, &nfsva, NULL, NULL,
1152 error = nfscl_nget(mp, dvp, nfhp, cnp, td, &np, NULL);
1157 (void) nfscl_loadattrcache(&newvp, &nfsva, NULL, NULL,
1160 if (cnp->cn_nameiop != LOOKUP && (flags & ISLASTCN))
1161 cnp->cn_flags |= SAVENAME;
1162 if ((cnp->cn_flags & MAKEENTRY) &&
1163 (cnp->cn_nameiop != DELETE || !(flags & ISLASTCN))) {
1164 np->n_ctime = np->n_vattr.na_vattr.va_ctime.tv_sec;
1165 cache_enter(dvp, newvp, cnp);
1173 * Just call ncl_bioread() to do the work.
1176 nfs_read(struct vop_read_args *ap)
1178 struct vnode *vp = ap->a_vp;
1180 switch (vp->v_type) {
1182 return (ncl_bioread(vp, ap->a_uio, ap->a_ioflag, ap->a_cred));
1186 return (EOPNOTSUPP);
1194 nfs_readlink(struct vop_readlink_args *ap)
1196 struct vnode *vp = ap->a_vp;
1198 if (vp->v_type != VLNK)
1200 return (ncl_bioread(vp, ap->a_uio, 0, ap->a_cred));
1204 * Do a readlink rpc.
1205 * Called by ncl_doio() from below the buffer cache.
1208 ncl_readlinkrpc(struct vnode *vp, struct uio *uiop, struct ucred *cred)
1210 int error, ret, attrflag;
1211 struct nfsvattr nfsva;
1213 error = nfsrpc_readlink(vp, uiop, cred, uiop->uio_td, &nfsva,
1216 ret = nfscl_loadattrcache(&vp, &nfsva, NULL, NULL, 0, 1);
1220 if (error && NFS_ISV4(vp))
1221 error = nfscl_maperr(uiop->uio_td, error, (uid_t)0, (gid_t)0);
1230 ncl_readrpc(struct vnode *vp, struct uio *uiop, struct ucred *cred)
1232 int error, ret, attrflag;
1233 struct nfsvattr nfsva;
1235 error = nfsrpc_read(vp, uiop, cred, uiop->uio_td, &nfsva, &attrflag,
1238 ret = nfscl_loadattrcache(&vp, &nfsva, NULL, NULL, 0, 1);
1242 if (error && NFS_ISV4(vp))
1243 error = nfscl_maperr(uiop->uio_td, error, (uid_t)0, (gid_t)0);
1251 ncl_writerpc(struct vnode *vp, struct uio *uiop, struct ucred *cred,
1252 int *iomode, int *must_commit)
1254 struct nfsvattr nfsva;
1255 int error = 0, attrflag, ret;
1256 u_char verf[NFSX_VERF];
1257 struct nfsmount *nmp = VFSTONFS(vp->v_mount);
1260 error = nfsrpc_write(vp, uiop, iomode, verf, cred,
1261 uiop->uio_td, &nfsva, &attrflag, NULL);
1263 if (!error && NFSHASWRITEVERF(nmp) &&
1264 NFSBCMP(verf, nmp->nm_verf, NFSX_VERF)) {
1266 NFSBCOPY(verf, nmp->nm_verf, NFSX_VERF);
1270 if (VTONFS(vp)->n_flag & ND_NFSV4)
1271 ret = nfscl_loadattrcache(&vp, &nfsva, NULL, NULL, 1,
1274 ret = nfscl_loadattrcache(&vp, &nfsva, NULL, NULL, 0,
1279 if (vp->v_mount->mnt_kern_flag & MNTK_ASYNC)
1280 *iomode = NFSWRITE_FILESYNC;
1281 if (error && NFS_ISV4(vp))
1282 error = nfscl_maperr(uiop->uio_td, error, (uid_t)0, (gid_t)0);
1288 * For NFS v2 this is a kludge. Use a create rpc but with the IFMT bits of the
1289 * mode set to specify the file type and the size field for rdev.
1292 nfs_mknodrpc(struct vnode *dvp, struct vnode **vpp, struct componentname *cnp,
1295 struct nfsvattr nfsva, dnfsva;
1296 struct vnode *newvp = NULL;
1297 struct nfsnode *np = NULL, *dnp;
1300 int error = 0, attrflag, dattrflag;
1303 if (vap->va_type == VCHR || vap->va_type == VBLK)
1304 rdev = vap->va_rdev;
1305 else if (vap->va_type == VFIFO || vap->va_type == VSOCK)
1308 return (EOPNOTSUPP);
1309 if ((error = VOP_GETATTR(dvp, &vattr, cnp->cn_cred)))
1311 error = nfsrpc_mknod(dvp, cnp->cn_nameptr, cnp->cn_namelen, vap,
1312 rdev, vap->va_type, cnp->cn_cred, cnp->cn_thread, &dnfsva,
1313 &nfsva, &nfhp, &attrflag, &dattrflag, NULL);
1316 (void) nfsrpc_lookup(dvp, cnp->cn_nameptr,
1317 cnp->cn_namelen, cnp->cn_cred, cnp->cn_thread,
1318 &dnfsva, &nfsva, &nfhp, &attrflag, &dattrflag,
1321 error = nfscl_nget(dvp->v_mount, dvp, nfhp, cnp,
1322 cnp->cn_thread, &np, NULL);
1325 (void) nfscl_loadattrcache(&dvp, &dnfsva, NULL, NULL, 0, 1);
1329 error = nfscl_loadattrcache(&newvp, &nfsva, NULL, NULL,
1333 if ((cnp->cn_flags & MAKEENTRY))
1334 cache_enter(dvp, newvp, cnp);
1336 } else if (NFS_ISV4(dvp)) {
1337 error = nfscl_maperr(cnp->cn_thread, error, vap->va_uid,
1341 mtx_lock(&dnp->n_mtx);
1342 dnp->n_flag |= NMODIFIED;
1344 dnp->n_attrstamp = 0;
1345 mtx_unlock(&dnp->n_mtx);
1351 * just call nfs_mknodrpc() to do the work.
1355 nfs_mknod(struct vop_mknod_args *ap)
1357 return (nfs_mknodrpc(ap->a_dvp, ap->a_vpp, ap->a_cnp, ap->a_vap));
1360 static u_long create_verf;
1362 * nfs file create call
1365 nfs_create(struct vop_create_args *ap)
1367 struct vnode *dvp = ap->a_dvp;
1368 struct vattr *vap = ap->a_vap;
1369 struct componentname *cnp = ap->a_cnp;
1370 struct nfsnode *np = NULL, *dnp;
1371 struct vnode *newvp = NULL;
1372 struct nfsmount *nmp;
1373 struct nfsvattr dnfsva, nfsva;
1376 int error = 0, attrflag, dattrflag, fmode = 0;
1380 * Oops, not for me..
1382 if (vap->va_type == VSOCK)
1383 return (nfs_mknodrpc(dvp, ap->a_vpp, cnp, vap));
1385 if ((error = VOP_GETATTR(dvp, &vattr, cnp->cn_cred)))
1387 if (vap->va_vaflags & VA_EXCLUSIVE)
1390 nmp = VFSTONFS(vnode_mount(dvp));
1392 /* For NFSv4, wait until any remove is done. */
1393 mtx_lock(&dnp->n_mtx);
1394 while (NFSHASNFSV4(nmp) && (dnp->n_flag & NREMOVEINPROG)) {
1395 dnp->n_flag |= NREMOVEWANT;
1396 (void) msleep((caddr_t)dnp, &dnp->n_mtx, PZERO, "nfscrt", 0);
1398 mtx_unlock(&dnp->n_mtx);
1400 CURVNET_SET(P_TO_VNET(&proc0));
1402 INIT_VNET_INET(curvnet);
1404 if (!TAILQ_EMPTY(&V_in_ifaddrhead))
1405 cverf.lval[0] = IA_SIN(TAILQ_FIRST(&V_in_ifaddrhead))->sin_addr.s_addr;
1408 cverf.lval[0] = create_verf;
1410 IN_IFADDR_RUNLOCK();
1412 cverf.lval[1] = ++create_verf;
1414 error = nfsrpc_create(dvp, cnp->cn_nameptr, cnp->cn_namelen,
1415 vap, cverf, fmode, cnp->cn_cred, cnp->cn_thread, &dnfsva, &nfsva,
1416 &nfhp, &attrflag, &dattrflag, NULL);
1419 (void) nfsrpc_lookup(dvp, cnp->cn_nameptr,
1420 cnp->cn_namelen, cnp->cn_cred, cnp->cn_thread,
1421 &dnfsva, &nfsva, &nfhp, &attrflag, &dattrflag,
1424 error = nfscl_nget(dvp->v_mount, dvp, nfhp, cnp,
1425 cnp->cn_thread, &np, NULL);
1428 (void) nfscl_loadattrcache(&dvp, &dnfsva, NULL, NULL, 0, 1);
1432 error = nfscl_loadattrcache(&newvp, &nfsva, NULL, NULL,
1436 if (newvp != NULL) {
1440 if (NFS_ISV34(dvp) && (fmode & O_EXCL) &&
1441 error == NFSERR_NOTSUPP) {
1445 } else if (NFS_ISV34(dvp) && (fmode & O_EXCL)) {
1446 if (nfscl_checksattr(vap, &nfsva)) {
1447 error = nfsrpc_setattr(newvp, vap, NULL, cnp->cn_cred,
1448 cnp->cn_thread, &nfsva, &attrflag, NULL);
1449 if (error && (vap->va_uid != (uid_t)VNOVAL ||
1450 vap->va_gid != (gid_t)VNOVAL)) {
1451 /* try again without setting uid/gid */
1452 vap->va_uid = (uid_t)VNOVAL;
1453 vap->va_gid = (uid_t)VNOVAL;
1454 error = nfsrpc_setattr(newvp, vap, NULL,
1455 cnp->cn_cred, cnp->cn_thread, &nfsva,
1459 (void) nfscl_loadattrcache(&newvp, &nfsva, NULL,
1464 if (cnp->cn_flags & MAKEENTRY)
1465 cache_enter(dvp, newvp, cnp);
1467 } else if (NFS_ISV4(dvp)) {
1468 error = nfscl_maperr(cnp->cn_thread, error, vap->va_uid,
1471 mtx_lock(&dnp->n_mtx);
1472 dnp->n_flag |= NMODIFIED;
1474 dnp->n_attrstamp = 0;
1475 mtx_unlock(&dnp->n_mtx);
1480 * nfs file remove call
1481 * To try and make nfs semantics closer to ufs semantics, a file that has
1482 * other processes using the vnode is renamed instead of removed and then
1483 * removed later on the last close.
1484 * - If v_usecount > 1
1485 * If a rename is not already in the works
1486 * call nfs_sillyrename() to set it up
1491 nfs_remove(struct vop_remove_args *ap)
1493 struct vnode *vp = ap->a_vp;
1494 struct vnode *dvp = ap->a_dvp;
1495 struct componentname *cnp = ap->a_cnp;
1496 struct nfsnode *np = VTONFS(vp);
1501 if ((cnp->cn_flags & HASBUF) == 0)
1502 panic("nfs_remove: no name");
1503 if (vrefcnt(vp) < 1)
1504 panic("nfs_remove: bad v_usecount");
1506 if (vp->v_type == VDIR)
1508 else if (vrefcnt(vp) == 1 || (np->n_sillyrename &&
1509 VOP_GETATTR(vp, &vattr, cnp->cn_cred) == 0 &&
1510 vattr.va_nlink > 1)) {
1512 * Purge the name cache so that the chance of a lookup for
1513 * the name succeeding while the remove is in progress is
1514 * minimized. Without node locking it can still happen, such
1515 * that an I/O op returns ESTALE, but since you get this if
1516 * another host removes the file..
1520 * throw away biocache buffers, mainly to avoid
1521 * unnecessary delayed writes later.
1523 error = ncl_vinvalbuf(vp, 0, cnp->cn_thread, 1);
1525 if (error != EINTR && error != EIO)
1526 error = nfs_removerpc(dvp, vp, cnp->cn_nameptr,
1527 cnp->cn_namelen, cnp->cn_cred, cnp->cn_thread);
1529 * Kludge City: If the first reply to the remove rpc is lost..
1530 * the reply to the retransmitted request will be ENOENT
1531 * since the file was in fact removed
1532 * Therefore, we cheat and return success.
1534 if (error == ENOENT)
1536 } else if (!np->n_sillyrename)
1537 error = nfs_sillyrename(dvp, vp, cnp);
1538 np->n_attrstamp = 0;
1543 * nfs file remove rpc called from nfs_inactive
1546 ncl_removeit(struct sillyrename *sp, struct vnode *vp)
1549 * Make sure that the directory vnode is still valid.
1550 * XXX we should lock sp->s_dvp here.
1552 if (sp->s_dvp->v_type == VBAD)
1554 return (nfs_removerpc(sp->s_dvp, vp, sp->s_name, sp->s_namlen,
1559 * Nfs remove rpc, called from nfs_remove() and ncl_removeit().
1562 nfs_removerpc(struct vnode *dvp, struct vnode *vp, char *name,
1563 int namelen, struct ucred *cred, struct thread *td)
1565 struct nfsvattr dnfsva;
1566 struct nfsnode *dnp = VTONFS(dvp);
1567 int error = 0, dattrflag;
1569 mtx_lock(&dnp->n_mtx);
1570 dnp->n_flag |= NREMOVEINPROG;
1571 mtx_unlock(&dnp->n_mtx);
1572 error = nfsrpc_remove(dvp, name, namelen, vp, cred, td, &dnfsva,
1574 mtx_lock(&dnp->n_mtx);
1575 if ((dnp->n_flag & NREMOVEWANT)) {
1576 dnp->n_flag &= ~(NREMOVEWANT | NREMOVEINPROG);
1577 mtx_unlock(&dnp->n_mtx);
1578 wakeup((caddr_t)dnp);
1580 dnp->n_flag &= ~NREMOVEINPROG;
1581 mtx_unlock(&dnp->n_mtx);
1584 (void) nfscl_loadattrcache(&dvp, &dnfsva, NULL, NULL, 0, 1);
1585 mtx_lock(&dnp->n_mtx);
1586 dnp->n_flag |= NMODIFIED;
1588 dnp->n_attrstamp = 0;
1589 mtx_unlock(&dnp->n_mtx);
1590 if (error && NFS_ISV4(dvp))
1591 error = nfscl_maperr(td, error, (uid_t)0, (gid_t)0);
1596 * nfs file rename call
1599 nfs_rename(struct vop_rename_args *ap)
1601 struct vnode *fvp = ap->a_fvp;
1602 struct vnode *tvp = ap->a_tvp;
1603 struct vnode *fdvp = ap->a_fdvp;
1604 struct vnode *tdvp = ap->a_tdvp;
1605 struct componentname *tcnp = ap->a_tcnp;
1606 struct componentname *fcnp = ap->a_fcnp;
1607 struct nfsnode *fnp = VTONFS(ap->a_fvp);
1608 struct nfsnode *tdnp = VTONFS(ap->a_tdvp);
1609 struct nfsv4node *newv4 = NULL;
1613 if ((tcnp->cn_flags & HASBUF) == 0 ||
1614 (fcnp->cn_flags & HASBUF) == 0)
1615 panic("nfs_rename: no name");
1617 /* Check for cross-device rename */
1618 if ((fvp->v_mount != tdvp->v_mount) ||
1619 (tvp && (fvp->v_mount != tvp->v_mount))) {
1625 ncl_printf("nfs_rename: fvp == tvp (can't happen)\n");
1629 if ((error = vn_lock(fvp, LK_EXCLUSIVE)))
1633 * We have to flush B_DELWRI data prior to renaming
1634 * the file. If we don't, the delayed-write buffers
1635 * can be flushed out later after the file has gone stale
1636 * under NFSV3. NFSV2 does not have this problem because
1637 * ( as far as I can tell ) it flushes dirty buffers more
1640 * Skip the rename operation if the fsync fails, this can happen
1641 * due to the server's volume being full, when we pushed out data
1642 * that was written back to our cache earlier. Not checking for
1643 * this condition can result in potential (silent) data loss.
1645 error = VOP_FSYNC(fvp, MNT_WAIT, fcnp->cn_thread);
1648 error = VOP_FSYNC(tvp, MNT_WAIT, tcnp->cn_thread);
1653 * If the tvp exists and is in use, sillyrename it before doing the
1654 * rename of the new file over it.
1655 * XXX Can't sillyrename a directory.
1657 if (tvp && vrefcnt(tvp) > 1 && !VTONFS(tvp)->n_sillyrename &&
1658 tvp->v_type != VDIR && !nfs_sillyrename(tdvp, tvp, tcnp)) {
1663 error = nfs_renamerpc(fdvp, fvp, fcnp->cn_nameptr, fcnp->cn_namelen,
1664 tdvp, tvp, tcnp->cn_nameptr, tcnp->cn_namelen, tcnp->cn_cred,
1669 * For NFSv4, check to see if it is the same name and
1670 * replace the name, if it is different.
1672 MALLOC(newv4, struct nfsv4node *,
1673 sizeof (struct nfsv4node) +
1674 tdnp->n_fhp->nfh_len + tcnp->cn_namelen - 1,
1675 M_NFSV4NODE, M_WAITOK);
1676 mtx_lock(&tdnp->n_mtx);
1677 mtx_lock(&fnp->n_mtx);
1678 if (fnp->n_v4 != NULL && fvp->v_type == VREG &&
1679 (fnp->n_v4->n4_namelen != tcnp->cn_namelen ||
1680 NFSBCMP(tcnp->cn_nameptr, NFS4NODENAME(fnp->n_v4),
1681 tcnp->cn_namelen) ||
1682 tdnp->n_fhp->nfh_len != fnp->n_v4->n4_fhlen ||
1683 NFSBCMP(tdnp->n_fhp->nfh_fh, fnp->n_v4->n4_data,
1684 tdnp->n_fhp->nfh_len))) {
1686 { char nnn[100]; int nnnl;
1687 nnnl = (tcnp->cn_namelen < 100) ? tcnp->cn_namelen : 99;
1688 bcopy(tcnp->cn_nameptr, nnn, nnnl);
1690 printf("ren replace=%s\n",nnn);
1693 FREE((caddr_t)fnp->n_v4, M_NFSV4NODE);
1696 fnp->n_v4->n4_fhlen = tdnp->n_fhp->nfh_len;
1697 fnp->n_v4->n4_namelen = tcnp->cn_namelen;
1698 NFSBCOPY(tdnp->n_fhp->nfh_fh, fnp->n_v4->n4_data,
1699 tdnp->n_fhp->nfh_len);
1700 NFSBCOPY(tcnp->cn_nameptr,
1701 NFS4NODENAME(fnp->n_v4), tcnp->cn_namelen);
1703 mtx_unlock(&tdnp->n_mtx);
1704 mtx_unlock(&fnp->n_mtx);
1706 FREE((caddr_t)newv4, M_NFSV4NODE);
1709 if (fvp->v_type == VDIR) {
1710 if (tvp != NULL && tvp->v_type == VDIR)
1725 * Kludge: Map ENOENT => 0 assuming that it is a reply to a retry.
1727 if (error == ENOENT)
1733 * nfs file rename rpc called from nfs_remove() above
1736 nfs_renameit(struct vnode *sdvp, struct vnode *svp, struct componentname *scnp,
1737 struct sillyrename *sp)
1740 return (nfs_renamerpc(sdvp, svp, scnp->cn_nameptr, scnp->cn_namelen,
1741 sdvp, NULL, sp->s_name, sp->s_namlen, scnp->cn_cred,
1746 * Do an nfs rename rpc. Called from nfs_rename() and nfs_renameit().
1749 nfs_renamerpc(struct vnode *fdvp, struct vnode *fvp, char *fnameptr,
1750 int fnamelen, struct vnode *tdvp, struct vnode *tvp, char *tnameptr,
1751 int tnamelen, struct ucred *cred, struct thread *td)
1753 struct nfsvattr fnfsva, tnfsva;
1754 struct nfsnode *fdnp = VTONFS(fdvp);
1755 struct nfsnode *tdnp = VTONFS(tdvp);
1756 int error = 0, fattrflag, tattrflag;
1758 error = nfsrpc_rename(fdvp, fvp, fnameptr, fnamelen, tdvp, tvp,
1759 tnameptr, tnamelen, cred, td, &fnfsva, &tnfsva, &fattrflag,
1760 &tattrflag, NULL, NULL);
1761 mtx_lock(&fdnp->n_mtx);
1762 fdnp->n_flag |= NMODIFIED;
1763 mtx_unlock(&fdnp->n_mtx);
1764 mtx_lock(&tdnp->n_mtx);
1765 tdnp->n_flag |= NMODIFIED;
1766 mtx_unlock(&tdnp->n_mtx);
1768 (void) nfscl_loadattrcache(&fdvp, &fnfsva, NULL, NULL, 0, 1);
1770 fdnp->n_attrstamp = 0;
1772 (void) nfscl_loadattrcache(&tdvp, &tnfsva, NULL, NULL, 0, 1);
1774 tdnp->n_attrstamp = 0;
1775 if (error && NFS_ISV4(fdvp))
1776 error = nfscl_maperr(td, error, (uid_t)0, (gid_t)0);
1781 * nfs hard link create call
1784 nfs_link(struct vop_link_args *ap)
1786 struct vnode *vp = ap->a_vp;
1787 struct vnode *tdvp = ap->a_tdvp;
1788 struct componentname *cnp = ap->a_cnp;
1789 struct nfsnode *tdnp;
1790 struct nfsvattr nfsva, dnfsva;
1791 int error = 0, attrflag, dattrflag;
1793 if (vp->v_mount != tdvp->v_mount) {
1798 * Push all writes to the server, so that the attribute cache
1799 * doesn't get "out of sync" with the server.
1800 * XXX There should be a better way!
1802 VOP_FSYNC(vp, MNT_WAIT, cnp->cn_thread);
1804 error = nfsrpc_link(tdvp, vp, cnp->cn_nameptr, cnp->cn_namelen,
1805 cnp->cn_cred, cnp->cn_thread, &dnfsva, &nfsva, &attrflag,
1807 tdnp = VTONFS(tdvp);
1808 mtx_lock(&tdnp->n_mtx);
1809 tdnp->n_flag |= NMODIFIED;
1810 mtx_unlock(&tdnp->n_mtx);
1812 (void) nfscl_loadattrcache(&vp, &nfsva, NULL, NULL, 0, 1);
1814 VTONFS(vp)->n_attrstamp = 0;
1816 (void) nfscl_loadattrcache(&tdvp, &dnfsva, NULL, NULL, 0, 1);
1818 tdnp->n_attrstamp = 0;
1820 * If negative lookup caching is enabled, I might as well
1821 * add an entry for this node. Not necessary for correctness,
1822 * but if negative caching is enabled, then the system
1823 * must care about lookup caching hit rate, so...
1825 if (newnfs_neglookup_enable != 0 &&
1826 (cnp->cn_flags & MAKEENTRY))
1827 cache_enter(tdvp, vp, cnp);
1828 if (error && NFS_ISV4(vp))
1829 error = nfscl_maperr(cnp->cn_thread, error, (uid_t)0,
1835 * nfs symbolic link create call
1838 nfs_symlink(struct vop_symlink_args *ap)
1840 struct vnode *dvp = ap->a_dvp;
1841 struct vattr *vap = ap->a_vap;
1842 struct componentname *cnp = ap->a_cnp;
1843 struct nfsvattr nfsva, dnfsva;
1845 struct nfsnode *np = NULL, *dnp;
1846 struct vnode *newvp = NULL;
1847 int error = 0, attrflag, dattrflag, ret;
1849 vap->va_type = VLNK;
1850 error = nfsrpc_symlink(dvp, cnp->cn_nameptr, cnp->cn_namelen,
1851 ap->a_target, vap, cnp->cn_cred, cnp->cn_thread, &dnfsva,
1852 &nfsva, &nfhp, &attrflag, &dattrflag, NULL);
1854 ret = nfscl_nget(dvp->v_mount, dvp, nfhp, cnp, cnp->cn_thread,
1861 if (newvp != NULL) {
1863 (void) nfscl_loadattrcache(&newvp, &nfsva, NULL, NULL,
1865 } else if (!error) {
1867 * If we do not have an error and we could not extract the
1868 * newvp from the response due to the request being NFSv2, we
1869 * have to do a lookup in order to obtain a newvp to return.
1871 error = nfs_lookitup(dvp, cnp->cn_nameptr, cnp->cn_namelen,
1872 cnp->cn_cred, cnp->cn_thread, &np);
1880 error = nfscl_maperr(cnp->cn_thread, error,
1881 vap->va_uid, vap->va_gid);
1884 * If negative lookup caching is enabled, I might as well
1885 * add an entry for this node. Not necessary for correctness,
1886 * but if negative caching is enabled, then the system
1887 * must care about lookup caching hit rate, so...
1889 if (newnfs_neglookup_enable != 0 &&
1890 (cnp->cn_flags & MAKEENTRY))
1891 cache_enter(dvp, newvp, cnp);
1896 mtx_lock(&dnp->n_mtx);
1897 dnp->n_flag |= NMODIFIED;
1898 mtx_unlock(&dnp->n_mtx);
1900 (void) nfscl_loadattrcache(&dvp, &dnfsva, NULL, NULL, 0, 1);
1902 dnp->n_attrstamp = 0;
1910 nfs_mkdir(struct vop_mkdir_args *ap)
1912 struct vnode *dvp = ap->a_dvp;
1913 struct vattr *vap = ap->a_vap;
1914 struct componentname *cnp = ap->a_cnp;
1915 struct nfsnode *np = NULL, *dnp;
1916 struct vnode *newvp = NULL;
1919 struct nfsvattr nfsva, dnfsva;
1920 int error = 0, attrflag, dattrflag, ret;
1922 if ((error = VOP_GETATTR(dvp, &vattr, cnp->cn_cred)))
1924 vap->va_type = VDIR;
1925 error = nfsrpc_mkdir(dvp, cnp->cn_nameptr, cnp->cn_namelen,
1926 vap, cnp->cn_cred, cnp->cn_thread, &dnfsva, &nfsva, &nfhp,
1927 &attrflag, &dattrflag, NULL);
1929 mtx_lock(&dnp->n_mtx);
1930 dnp->n_flag |= NMODIFIED;
1931 mtx_unlock(&dnp->n_mtx);
1933 (void) nfscl_loadattrcache(&dvp, &dnfsva, NULL, NULL, 0, 1);
1935 dnp->n_attrstamp = 0;
1937 ret = nfscl_nget(dvp->v_mount, dvp, nfhp, cnp, cnp->cn_thread,
1942 (void) nfscl_loadattrcache(&newvp, &nfsva, NULL,
1947 if (!error && newvp == NULL) {
1948 error = nfs_lookitup(dvp, cnp->cn_nameptr, cnp->cn_namelen,
1949 cnp->cn_cred, cnp->cn_thread, &np);
1952 if (newvp->v_type != VDIR)
1960 error = nfscl_maperr(cnp->cn_thread, error,
1961 vap->va_uid, vap->va_gid);
1964 * If negative lookup caching is enabled, I might as well
1965 * add an entry for this node. Not necessary for correctness,
1966 * but if negative caching is enabled, then the system
1967 * must care about lookup caching hit rate, so...
1969 if (newnfs_neglookup_enable != 0 &&
1970 (cnp->cn_flags & MAKEENTRY))
1971 cache_enter(dvp, newvp, cnp);
1978 * nfs remove directory call
1981 nfs_rmdir(struct vop_rmdir_args *ap)
1983 struct vnode *vp = ap->a_vp;
1984 struct vnode *dvp = ap->a_dvp;
1985 struct componentname *cnp = ap->a_cnp;
1986 struct nfsnode *dnp;
1987 struct nfsvattr dnfsva;
1988 int error, dattrflag;
1992 error = nfsrpc_rmdir(dvp, cnp->cn_nameptr, cnp->cn_namelen,
1993 cnp->cn_cred, cnp->cn_thread, &dnfsva, &dattrflag, NULL);
1995 mtx_lock(&dnp->n_mtx);
1996 dnp->n_flag |= NMODIFIED;
1997 mtx_unlock(&dnp->n_mtx);
1999 (void) nfscl_loadattrcache(&dvp, &dnfsva, NULL, NULL, 0, 1);
2001 dnp->n_attrstamp = 0;
2005 if (error && NFS_ISV4(dvp))
2006 error = nfscl_maperr(cnp->cn_thread, error, (uid_t)0,
2009 * Kludge: Map ENOENT => 0 assuming that you have a reply to a retry.
2011 if (error == ENOENT)
2020 nfs_readdir(struct vop_readdir_args *ap)
2022 struct vnode *vp = ap->a_vp;
2023 struct nfsnode *np = VTONFS(vp);
2024 struct uio *uio = ap->a_uio;
2025 int tresid, error = 0;
2028 if (vp->v_type != VDIR)
2032 * First, check for hit on the EOF offset cache
2034 if (np->n_direofoffset > 0 && uio->uio_offset >= np->n_direofoffset &&
2035 (np->n_flag & NMODIFIED) == 0) {
2036 if (VOP_GETATTR(vp, &vattr, ap->a_cred) == 0) {
2037 mtx_lock(&np->n_mtx);
2038 if ((NFS_ISV4(vp) && np->n_change == vattr.va_filerev) ||
2039 !NFS_TIMESPEC_COMPARE(&np->n_mtime, &vattr.va_mtime)) {
2040 mtx_unlock(&np->n_mtx);
2041 NFSINCRGLOBAL(newnfsstats.direofcache_hits);
2044 mtx_unlock(&np->n_mtx);
2049 * Call ncl_bioread() to do the real work.
2051 tresid = uio->uio_resid;
2052 error = ncl_bioread(vp, uio, 0, ap->a_cred);
2054 if (!error && uio->uio_resid == tresid)
2055 NFSINCRGLOBAL(newnfsstats.direofcache_misses);
2061 * Called from below the buffer cache by ncl_doio().
2064 ncl_readdirrpc(struct vnode *vp, struct uio *uiop, struct ucred *cred,
2067 struct nfsvattr nfsva;
2068 nfsuint64 *cookiep, cookie;
2069 struct nfsnode *dnp = VTONFS(vp);
2070 struct nfsmount *nmp = VFSTONFS(vp->v_mount);
2071 int error = 0, eof, attrflag;
2074 if (uiop->uio_iovcnt != 1 || (uiop->uio_offset & (DIRBLKSIZ - 1)) ||
2075 (uiop->uio_resid & (DIRBLKSIZ - 1)))
2076 panic("nfs readdirrpc bad uio");
2080 * If there is no cookie, assume directory was stale.
2082 ncl_dircookie_lock(dnp);
2083 cookiep = ncl_getcookie(dnp, uiop->uio_offset, 0);
2086 ncl_dircookie_unlock(dnp);
2088 ncl_dircookie_unlock(dnp);
2089 return (NFSERR_BAD_COOKIE);
2092 if (NFSHASNFSV3(nmp) && !NFSHASGOTFSINFO(nmp))
2093 (void)ncl_fsinfo(nmp, vp, cred, td);
2095 error = nfsrpc_readdir(vp, uiop, &cookie, cred, td, &nfsva,
2096 &attrflag, &eof, NULL);
2098 (void) nfscl_loadattrcache(&vp, &nfsva, NULL, NULL, 0, 1);
2102 * We are now either at the end of the directory or have filled
2106 dnp->n_direofoffset = uiop->uio_offset;
2108 if (uiop->uio_resid > 0)
2109 ncl_printf("EEK! readdirrpc resid > 0\n");
2110 ncl_dircookie_lock(dnp);
2111 cookiep = ncl_getcookie(dnp, uiop->uio_offset, 1);
2113 ncl_dircookie_unlock(dnp);
2115 } else if (NFS_ISV4(vp)) {
2116 error = nfscl_maperr(td, error, (uid_t)0, (gid_t)0);
2122 * NFS V3 readdir plus RPC. Used in place of ncl_readdirrpc().
2125 ncl_readdirplusrpc(struct vnode *vp, struct uio *uiop, struct ucred *cred,
2128 struct nfsvattr nfsva;
2129 nfsuint64 *cookiep, cookie;
2130 struct nfsnode *dnp = VTONFS(vp);
2131 struct nfsmount *nmp = VFSTONFS(vp->v_mount);
2132 int error = 0, attrflag, eof;
2135 if (uiop->uio_iovcnt != 1 || (uiop->uio_offset & (DIRBLKSIZ - 1)) ||
2136 (uiop->uio_resid & (DIRBLKSIZ - 1)))
2137 panic("nfs readdirplusrpc bad uio");
2141 * If there is no cookie, assume directory was stale.
2143 ncl_dircookie_lock(dnp);
2144 cookiep = ncl_getcookie(dnp, uiop->uio_offset, 0);
2147 ncl_dircookie_unlock(dnp);
2149 ncl_dircookie_unlock(dnp);
2150 return (NFSERR_BAD_COOKIE);
2153 if (NFSHASNFSV3(nmp) && !NFSHASGOTFSINFO(nmp))
2154 (void)ncl_fsinfo(nmp, vp, cred, td);
2155 error = nfsrpc_readdirplus(vp, uiop, &cookie, cred, td, &nfsva,
2156 &attrflag, &eof, NULL);
2158 (void) nfscl_loadattrcache(&vp, &nfsva, NULL, NULL, 0, 1);
2162 * We are now either at end of the directory or have filled the
2166 dnp->n_direofoffset = uiop->uio_offset;
2168 if (uiop->uio_resid > 0)
2169 ncl_printf("EEK! readdirplusrpc resid > 0\n");
2170 ncl_dircookie_lock(dnp);
2171 cookiep = ncl_getcookie(dnp, uiop->uio_offset, 1);
2173 ncl_dircookie_unlock(dnp);
2175 } else if (NFS_ISV4(vp)) {
2176 error = nfscl_maperr(td, error, (uid_t)0, (gid_t)0);
2182 * Silly rename. To make the NFS filesystem that is stateless look a little
2183 * more like the "ufs" a remove of an active vnode is translated to a rename
2184 * to a funny looking filename that is removed by nfs_inactive on the
2185 * nfsnode. There is the potential for another process on a different client
2186 * to create the same funny name between the nfs_lookitup() fails and the
2187 * nfs_rename() completes, but...
2190 nfs_sillyrename(struct vnode *dvp, struct vnode *vp, struct componentname *cnp)
2192 struct sillyrename *sp;
2196 unsigned int lticks;
2201 if (vp->v_type == VDIR)
2202 panic("nfs: sillyrename dir");
2204 MALLOC(sp, struct sillyrename *, sizeof (struct sillyrename),
2205 M_NEWNFSREQ, M_WAITOK);
2206 sp->s_cred = crhold(cnp->cn_cred);
2211 * Fudge together a funny name.
2212 * Changing the format of the funny name to accomodate more
2213 * sillynames per directory.
2214 * The name is now changed to .nfs.<ticks>.<pid>.4, where ticks is
2215 * CPU ticks since boot.
2217 pid = cnp->cn_thread->td_proc->p_pid;
2218 lticks = (unsigned int)ticks;
2220 sp->s_namlen = sprintf(sp->s_name,
2221 ".nfs.%08x.%04x4.4", lticks,
2223 if (nfs_lookitup(dvp, sp->s_name, sp->s_namlen, sp->s_cred,
2224 cnp->cn_thread, NULL))
2228 error = nfs_renameit(dvp, vp, cnp, sp);
2231 error = nfs_lookitup(dvp, sp->s_name, sp->s_namlen, sp->s_cred,
2232 cnp->cn_thread, &np);
2233 np->n_sillyrename = sp;
2238 free((caddr_t)sp, M_NEWNFSREQ);
2243 * Look up a file name and optionally either update the file handle or
2244 * allocate an nfsnode, depending on the value of npp.
2245 * npp == NULL --> just do the lookup
2246 * *npp == NULL --> allocate a new nfsnode and make sure attributes are
2248 * *npp != NULL --> update the file handle in the vnode
2251 nfs_lookitup(struct vnode *dvp, char *name, int len, struct ucred *cred,
2252 struct thread *td, struct nfsnode **npp)
2254 struct vnode *newvp = NULL, *vp;
2255 struct nfsnode *np, *dnp = VTONFS(dvp);
2256 struct nfsfh *nfhp, *onfhp;
2257 struct nfsvattr nfsva, dnfsva;
2258 struct componentname cn;
2259 int error = 0, attrflag, dattrflag;
2262 error = nfsrpc_lookup(dvp, name, len, cred, td, &dnfsva, &nfsva,
2263 &nfhp, &attrflag, &dattrflag, NULL);
2265 (void) nfscl_loadattrcache(&dvp, &dnfsva, NULL, NULL, 0, 1);
2266 if (npp && !error) {
2271 * For NFSv4, check to see if it is the same name and
2272 * replace the name, if it is different.
2274 if (np->n_v4 != NULL && nfsva.na_type == VREG &&
2275 (np->n_v4->n4_namelen != len ||
2276 NFSBCMP(name, NFS4NODENAME(np->n_v4), len) ||
2277 dnp->n_fhp->nfh_len != np->n_v4->n4_fhlen ||
2278 NFSBCMP(dnp->n_fhp->nfh_fh, np->n_v4->n4_data,
2279 dnp->n_fhp->nfh_len))) {
2281 { char nnn[100]; int nnnl;
2282 nnnl = (len < 100) ? len : 99;
2283 bcopy(name, nnn, nnnl);
2285 printf("replace=%s\n",nnn);
2288 FREE((caddr_t)np->n_v4, M_NFSV4NODE);
2289 MALLOC(np->n_v4, struct nfsv4node *,
2290 sizeof (struct nfsv4node) +
2291 dnp->n_fhp->nfh_len + len - 1,
2292 M_NFSV4NODE, M_WAITOK);
2293 np->n_v4->n4_fhlen = dnp->n_fhp->nfh_len;
2294 np->n_v4->n4_namelen = len;
2295 NFSBCOPY(dnp->n_fhp->nfh_fh, np->n_v4->n4_data,
2296 dnp->n_fhp->nfh_len);
2297 NFSBCOPY(name, NFS4NODENAME(np->n_v4), len);
2299 hash = fnv_32_buf(nfhp->nfh_fh, nfhp->nfh_len,
2303 * Rehash node for new file handle.
2305 vfs_hash_rehash(vp, hash);
2308 FREE((caddr_t)onfhp, M_NFSFH);
2310 } else if (NFS_CMPFH(dnp, nfhp->nfh_fh, nfhp->nfh_len)) {
2311 FREE((caddr_t)nfhp, M_NFSFH);
2315 cn.cn_nameptr = name;
2316 cn.cn_namelen = len;
2317 error = nfscl_nget(dvp->v_mount, dvp, nfhp, &cn, td,
2323 if (!attrflag && *npp == NULL) {
2328 (void) nfscl_loadattrcache(&newvp, &nfsva, NULL, NULL,
2331 if (npp && *npp == NULL) {
2342 if (error && NFS_ISV4(dvp))
2343 error = nfscl_maperr(td, error, (uid_t)0, (gid_t)0);
2348 * Nfs Version 3 and 4 commit rpc
2351 ncl_commit(struct vnode *vp, u_quad_t offset, int cnt, struct ucred *cred,
2354 struct nfsvattr nfsva;
2355 struct nfsmount *nmp = VFSTONFS(vp->v_mount);
2356 int error, attrflag;
2357 u_char verf[NFSX_VERF];
2359 mtx_lock(&nmp->nm_mtx);
2360 if ((nmp->nm_state & NFSSTA_HASWRITEVERF) == 0) {
2361 mtx_unlock(&nmp->nm_mtx);
2364 mtx_unlock(&nmp->nm_mtx);
2365 error = nfsrpc_commit(vp, offset, cnt, cred, td, verf, &nfsva,
2368 if (NFSBCMP((caddr_t)nmp->nm_verf, verf, NFSX_VERF)) {
2369 NFSBCOPY(verf, (caddr_t)nmp->nm_verf, NFSX_VERF);
2370 error = NFSERR_STALEWRITEVERF;
2372 if (!error && attrflag)
2373 (void) nfscl_loadattrcache(&vp, &nfsva, NULL, NULL,
2375 } else if (NFS_ISV4(vp)) {
2376 error = nfscl_maperr(td, error, (uid_t)0, (gid_t)0);
2383 * For async requests when nfsiod(s) are running, queue the request by
2384 * calling ncl_asyncio(), otherwise just all ncl_doio() to do the
2388 nfs_strategy(struct vop_strategy_args *ap)
2390 struct buf *bp = ap->a_bp;
2393 KASSERT(!(bp->b_flags & B_DONE),
2394 ("nfs_strategy: buffer %p unexpectedly marked B_DONE", bp));
2395 BUF_ASSERT_HELD(bp);
2397 if (bp->b_iocmd == BIO_READ)
2403 * If the op is asynchronous and an i/o daemon is waiting
2404 * queue the request, wake it up and wait for completion
2405 * otherwise just do it ourselves.
2407 if ((bp->b_flags & B_ASYNC) == 0 ||
2408 ncl_asyncio(VFSTONFS(ap->a_vp->v_mount), bp, NOCRED, curthread))
2409 (void)ncl_doio(ap->a_vp, bp, cr, curthread);
2414 * fsync vnode op. Just call ncl_flush() with commit == 1.
2418 nfs_fsync(struct vop_fsync_args *ap)
2420 return (ncl_flush(ap->a_vp, ap->a_waitfor, NULL, ap->a_td, 1));
2424 * Flush all the blocks associated with a vnode.
2425 * Walk through the buffer pool and push any dirty pages
2426 * associated with the vnode.
2429 ncl_flush(struct vnode *vp, int waitfor, struct ucred *cred, struct thread *td,
2432 struct nfsnode *np = VTONFS(vp);
2436 struct nfsmount *nmp = VFSTONFS(vp->v_mount);
2437 int error = 0, slptimeo = 0, slpflag = 0, retv, bvecpos;
2438 int passone = 1, trycnt = 0;
2439 u_quad_t off, endoff, toff;
2440 struct ucred* wcred = NULL;
2441 struct buf **bvec = NULL;
2443 #ifndef NFS_COMMITBVECSIZ
2444 #define NFS_COMMITBVECSIZ 20
2446 struct buf *bvec_on_stack[NFS_COMMITBVECSIZ];
2447 int bvecsize = 0, bveccount;
2449 if (nmp->nm_flag & NFSMNT_INT)
2455 * A b_flags == (B_DELWRI | B_NEEDCOMMIT) block has been written to the
2456 * server, but has not been committed to stable storage on the server
2457 * yet. On the first pass, the byte range is worked out and the commit
2458 * rpc is done. On the second pass, ncl_writebp() is called to do the
2465 if (NFS_ISV34(vp) && commit) {
2466 if (bvec != NULL && bvec != bvec_on_stack)
2469 * Count up how many buffers waiting for a commit.
2473 TAILQ_FOREACH_SAFE(bp, &bo->bo_dirty.bv_hd, b_bobufs, nbp) {
2474 if (!BUF_ISLOCKED(bp) &&
2475 (bp->b_flags & (B_DELWRI | B_NEEDCOMMIT))
2476 == (B_DELWRI | B_NEEDCOMMIT))
2480 * Allocate space to remember the list of bufs to commit. It is
2481 * important to use M_NOWAIT here to avoid a race with nfs_write.
2482 * If we can't get memory (for whatever reason), we will end up
2483 * committing the buffers one-by-one in the loop below.
2485 if (bveccount > NFS_COMMITBVECSIZ) {
2487 * Release the vnode interlock to avoid a lock
2491 bvec = (struct buf **)
2492 malloc(bveccount * sizeof(struct buf *),
2496 bvec = bvec_on_stack;
2497 bvecsize = NFS_COMMITBVECSIZ;
2499 bvecsize = bveccount;
2501 bvec = bvec_on_stack;
2502 bvecsize = NFS_COMMITBVECSIZ;
2504 TAILQ_FOREACH_SAFE(bp, &bo->bo_dirty.bv_hd, b_bobufs, nbp) {
2505 if (bvecpos >= bvecsize)
2507 if (BUF_LOCK(bp, LK_EXCLUSIVE | LK_NOWAIT, NULL)) {
2508 nbp = TAILQ_NEXT(bp, b_bobufs);
2511 if ((bp->b_flags & (B_DELWRI | B_NEEDCOMMIT)) !=
2512 (B_DELWRI | B_NEEDCOMMIT)) {
2514 nbp = TAILQ_NEXT(bp, b_bobufs);
2520 * Work out if all buffers are using the same cred
2521 * so we can deal with them all with one commit.
2523 * NOTE: we are not clearing B_DONE here, so we have
2524 * to do it later on in this routine if we intend to
2525 * initiate I/O on the bp.
2527 * Note: to avoid loopback deadlocks, we do not
2528 * assign b_runningbufspace.
2531 wcred = bp->b_wcred;
2532 else if (wcred != bp->b_wcred)
2534 vfs_busy_pages(bp, 1);
2538 * bp is protected by being locked, but nbp is not
2539 * and vfs_busy_pages() may sleep. We have to
2542 nbp = TAILQ_NEXT(bp, b_bobufs);
2545 * A list of these buffers is kept so that the
2546 * second loop knows which buffers have actually
2547 * been committed. This is necessary, since there
2548 * may be a race between the commit rpc and new
2549 * uncommitted writes on the file.
2551 bvec[bvecpos++] = bp;
2552 toff = ((u_quad_t)bp->b_blkno) * DEV_BSIZE +
2556 toff += (u_quad_t)(bp->b_dirtyend - bp->b_dirtyoff);
2564 * Commit data on the server, as required.
2565 * If all bufs are using the same wcred, then use that with
2566 * one call for all of them, otherwise commit each one
2569 if (wcred != NOCRED)
2570 retv = ncl_commit(vp, off, (int)(endoff - off),
2574 for (i = 0; i < bvecpos; i++) {
2577 off = ((u_quad_t)bp->b_blkno) * DEV_BSIZE +
2579 size = (u_quad_t)(bp->b_dirtyend
2581 retv = ncl_commit(vp, off, (int)size,
2587 if (retv == NFSERR_STALEWRITEVERF)
2588 ncl_clearcommit(vp->v_mount);
2591 * Now, either mark the blocks I/O done or mark the
2592 * blocks dirty, depending on whether the commit
2595 for (i = 0; i < bvecpos; i++) {
2597 bp->b_flags &= ~(B_NEEDCOMMIT | B_CLUSTEROK);
2600 * Error, leave B_DELWRI intact
2602 vfs_unbusy_pages(bp);
2606 * Success, remove B_DELWRI ( bundirty() ).
2608 * b_dirtyoff/b_dirtyend seem to be NFS
2609 * specific. We should probably move that
2610 * into bundirty(). XXX
2613 bp->b_flags |= B_ASYNC;
2615 bp->b_flags &= ~B_DONE;
2616 bp->b_ioflags &= ~BIO_ERROR;
2617 bp->b_dirtyoff = bp->b_dirtyend = 0;
2624 * Start/do any write(s) that are required.
2628 TAILQ_FOREACH_SAFE(bp, &bo->bo_dirty.bv_hd, b_bobufs, nbp) {
2629 if (BUF_LOCK(bp, LK_EXCLUSIVE | LK_NOWAIT, NULL)) {
2630 if (waitfor != MNT_WAIT || passone)
2633 error = BUF_TIMELOCK(bp,
2634 LK_EXCLUSIVE | LK_SLEEPFAIL | LK_INTERLOCK,
2635 BO_MTX(bo), "nfsfsync", slpflag, slptimeo);
2640 if (error == ENOLCK) {
2644 if (newnfs_sigintr(nmp, td)) {
2648 if (slpflag == PCATCH) {
2654 if ((bp->b_flags & B_DELWRI) == 0)
2655 panic("nfs_fsync: not dirty");
2656 if ((passone || !commit) && (bp->b_flags & B_NEEDCOMMIT)) {
2662 if (passone || !commit)
2663 bp->b_flags |= B_ASYNC;
2665 bp->b_flags |= B_ASYNC;
2667 if (newnfs_sigintr(nmp, td)) {
2678 if (waitfor == MNT_WAIT) {
2679 while (bo->bo_numoutput) {
2680 error = bufobj_wwait(bo, slpflag, slptimeo);
2683 error = newnfs_sigintr(nmp, td);
2686 if (slpflag == PCATCH) {
2693 if (bo->bo_dirty.bv_cnt != 0 && commit) {
2698 * Wait for all the async IO requests to drain
2701 mtx_lock(&np->n_mtx);
2702 while (np->n_directio_asyncwr > 0) {
2703 np->n_flag |= NFSYNCWAIT;
2704 error = ncl_msleep(td, (caddr_t)&np->n_directio_asyncwr,
2705 &np->n_mtx, slpflag | (PRIBIO + 1),
2708 if (newnfs_sigintr(nmp, td)) {
2709 mtx_unlock(&np->n_mtx);
2715 mtx_unlock(&np->n_mtx);
2718 mtx_lock(&np->n_mtx);
2719 if (np->n_flag & NWRITEERR) {
2720 error = np->n_error;
2721 np->n_flag &= ~NWRITEERR;
2723 if (commit && bo->bo_dirty.bv_cnt == 0 &&
2724 bo->bo_numoutput == 0 && np->n_directio_asyncwr == 0)
2725 np->n_flag &= ~NMODIFIED;
2726 mtx_unlock(&np->n_mtx);
2728 if (bvec != NULL && bvec != bvec_on_stack)
2730 if (error == 0 && commit != 0 && waitfor == MNT_WAIT &&
2731 (bo->bo_dirty.bv_cnt != 0 || bo->bo_numoutput != 0 ||
2732 np->n_directio_asyncwr != 0) && trycnt++ < 5) {
2733 /* try, try again... */
2738 printf("try%d\n", trycnt);
2745 * NFS advisory byte-level locks.
2748 nfs_advlock(struct vop_advlock_args *ap)
2750 struct vnode *vp = ap->a_vp;
2752 struct nfsnode *np = VTONFS(ap->a_vp);
2753 struct proc *p = (struct proc *)ap->a_id;
2754 struct thread *td = curthread; /* XXX */
2756 int ret, error = EOPNOTSUPP;
2759 if (NFS_ISV4(vp) && (ap->a_flags & F_POSIX)) {
2761 vn_lock(vp, LK_EXCLUSIVE | LK_RETRY);
2762 if (vp->v_iflag & VI_DOOMED) {
2768 * If this is unlocking a write locked region, flush and
2769 * commit them before unlocking. This is required by
2770 * RFC3530 Sec. 9.3.2.
2772 if (ap->a_op == F_UNLCK &&
2773 nfscl_checkwritelocked(vp, ap->a_fl, cred, td))
2774 (void) ncl_flush(vp, MNT_WAIT, cred, td, 1);
2777 * Loop around doing the lock op, while a blocking lock
2778 * must wait for the lock op to succeed.
2781 ret = nfsrpc_advlock(vp, np->n_size, ap->a_op,
2782 ap->a_fl, 0, cred, td);
2783 if (ret == NFSERR_DENIED && (ap->a_flags & F_WAIT) &&
2784 ap->a_op == F_SETLK) {
2786 error = nfs_catnap(PZERO | PCATCH, "ncladvl");
2789 vn_lock(vp, LK_EXCLUSIVE | LK_RETRY);
2790 if (vp->v_iflag & VI_DOOMED) {
2795 } while (ret == NFSERR_DENIED && (ap->a_flags & F_WAIT) &&
2796 ap->a_op == F_SETLK);
2797 if (ret == NFSERR_DENIED) {
2800 } else if (ret == EINVAL || ret == EBADF || ret == EINTR) {
2803 } else if (ret != 0) {
2809 * Now, if we just got a lock, invalidate data in the buffer
2810 * cache, as required, so that the coherency conforms with
2811 * RFC3530 Sec. 9.3.2.
2813 if (ap->a_op == F_SETLK) {
2814 if ((np->n_flag & NMODIFIED) == 0) {
2815 np->n_attrstamp = 0;
2816 ret = VOP_GETATTR(vp, &va, cred);
2818 if ((np->n_flag & NMODIFIED) || ret ||
2819 np->n_change != va.va_filerev) {
2820 (void) ncl_vinvalbuf(vp, V_SAVE, td, 1);
2821 np->n_attrstamp = 0;
2822 ret = VOP_GETATTR(vp, &va, cred);
2824 np->n_mtime = va.va_mtime;
2825 np->n_change = va.va_filerev;
2831 } else if (!NFS_ISV4(vp)) {
2832 error = vn_lock(vp, LK_SHARED);
2835 if ((VFSTONFS(vp->v_mount)->nm_flag & NFSMNT_NOLOCKD) != 0) {
2836 size = VTONFS(vp)->n_size;
2838 error = lf_advlock(ap, &(vp->v_lockf), size);
2841 error = ncl_advlock_p(ap);
2850 * NFS advisory byte-level locks.
2853 nfs_advlockasync(struct vop_advlockasync_args *ap)
2855 struct vnode *vp = ap->a_vp;
2860 return (EOPNOTSUPP);
2861 error = vn_lock(vp, LK_SHARED);
2864 if ((VFSTONFS(vp->v_mount)->nm_flag & NFSMNT_NOLOCKD) != 0) {
2865 size = VTONFS(vp)->n_size;
2867 error = lf_advlockasync(ap, &(vp->v_lockf), size);
2876 * Print out the contents of an nfsnode.
2879 nfs_print(struct vop_print_args *ap)
2881 struct vnode *vp = ap->a_vp;
2882 struct nfsnode *np = VTONFS(vp);
2884 ncl_printf("\tfileid %ld fsid 0x%x",
2885 np->n_vattr.na_fileid, np->n_vattr.na_fsid);
2886 if (vp->v_type == VFIFO)
2893 * This is the "real" nfs::bwrite(struct buf*).
2894 * We set B_CACHE if this is a VMIO buffer.
2897 ncl_writebp(struct buf *bp, int force __unused, struct thread *td)
2900 int oldflags = bp->b_flags;
2906 BUF_ASSERT_HELD(bp);
2908 if (bp->b_flags & B_INVAL) {
2913 bp->b_flags |= B_CACHE;
2916 * Undirty the bp. We will redirty it later if the I/O fails.
2921 bp->b_flags &= ~B_DONE;
2922 bp->b_ioflags &= ~BIO_ERROR;
2923 bp->b_iocmd = BIO_WRITE;
2925 bufobj_wref(bp->b_bufobj);
2926 curthread->td_ru.ru_oublock++;
2930 * Note: to avoid loopback deadlocks, we do not
2931 * assign b_runningbufspace.
2933 vfs_busy_pages(bp, 1);
2936 bp->b_iooffset = dbtob(bp->b_blkno);
2939 if( (oldflags & B_ASYNC) == 0) {
2940 int rtval = bufwait(bp);
2942 if (oldflags & B_DELWRI) {
2955 * nfs special file access vnode op.
2956 * Essentially just get vattr and then imitate iaccess() since the device is
2957 * local to the client.
2960 nfsspec_access(struct vop_access_args *ap)
2963 struct ucred *cred = ap->a_cred;
2964 struct vnode *vp = ap->a_vp;
2965 accmode_t accmode = ap->a_accmode;
2970 * Disallow write attempts on filesystems mounted read-only;
2971 * unless the file is a socket, fifo, or a block or character
2972 * device resident on the filesystem.
2974 if ((accmode & VWRITE) && (vp->v_mount->mnt_flag & MNT_RDONLY)) {
2975 switch (vp->v_type) {
2985 error = VOP_GETATTR(vp, vap, cred);
2988 error = vaccess(vp->v_type, vap->va_mode, vap->va_uid, vap->va_gid,
2989 accmode, cred, NULL);
2995 * Read wrapper for fifos.
2998 nfsfifo_read(struct vop_read_args *ap)
3000 struct nfsnode *np = VTONFS(ap->a_vp);
3006 mtx_lock(&np->n_mtx);
3008 getnanotime(&np->n_atim);
3009 mtx_unlock(&np->n_mtx);
3010 error = fifo_specops.vop_read(ap);
3015 * Write wrapper for fifos.
3018 nfsfifo_write(struct vop_write_args *ap)
3020 struct nfsnode *np = VTONFS(ap->a_vp);
3025 mtx_lock(&np->n_mtx);
3027 getnanotime(&np->n_mtim);
3028 mtx_unlock(&np->n_mtx);
3029 return(fifo_specops.vop_write(ap));
3033 * Close wrapper for fifos.
3035 * Update the times on the nfsnode then do fifo close.
3038 nfsfifo_close(struct vop_close_args *ap)
3040 struct vnode *vp = ap->a_vp;
3041 struct nfsnode *np = VTONFS(vp);
3045 mtx_lock(&np->n_mtx);
3046 if (np->n_flag & (NACC | NUPD)) {
3048 if (np->n_flag & NACC)
3050 if (np->n_flag & NUPD)
3053 if (vrefcnt(vp) == 1 &&
3054 (vp->v_mount->mnt_flag & MNT_RDONLY) == 0) {
3056 if (np->n_flag & NACC)
3057 vattr.va_atime = np->n_atim;
3058 if (np->n_flag & NUPD)
3059 vattr.va_mtime = np->n_mtim;
3060 mtx_unlock(&np->n_mtx);
3061 (void)VOP_SETATTR(vp, &vattr, ap->a_cred);
3065 mtx_unlock(&np->n_mtx);
3067 return (fifo_specops.vop_close(ap));
3071 * Just call ncl_writebp() with the force argument set to 1.
3073 * NOTE: B_DONE may or may not be set in a_bp on call.
3076 nfs_bwrite(struct buf *bp)
3079 return (ncl_writebp(bp, 1, curthread));
3082 struct buf_ops buf_ops_newnfs = {
3083 .bop_name = "buf_ops_nfs",
3084 .bop_write = nfs_bwrite,
3085 .bop_strategy = bufstrategy,
3086 .bop_sync = bufsync,
3087 .bop_bdflush = bufbdflush,
3091 * Cloned from vop_stdlock(), and then the ugly hack added.
3094 nfs_lock1(struct vop_lock1_args *ap)
3096 struct vnode *vp = ap->a_vp;
3100 * Since vfs_hash_get() calls vget() and it will no longer work
3101 * for FreeBSD8 with flags == 0, I can only think of this horrible
3102 * hack to work around it. I call vfs_hash_get() with LK_EXCLOTHER
3103 * and then handle it here. All I want for this case is a v_usecount
3104 * on the vnode to use for recovery, while another thread might
3105 * hold a lock on the vnode. I have the other threads blocked, so
3106 * there isn't any race problem.
3108 if ((ap->a_flags & LK_TYPE_MASK) == LK_EXCLOTHER) {
3109 if ((ap->a_flags & LK_INTERLOCK) == 0)
3111 if ((vp->v_iflag & VI_DOOMED))
3116 return (_lockmgr_args(vp->v_vnlock, ap->a_flags, VI_MTX(vp),
3117 LK_WMESG_DEFAULT, LK_PRIO_DEFAULT, LK_TIMO_DEFAULT, ap->a_file,
3121 #ifdef NFS4_ACL_EXTATTR_NAME
3123 nfs_getacl(struct vop_getacl_args *ap)
3127 if (ap->a_type != ACL_TYPE_NFS4)
3128 return (EOPNOTSUPP);
3129 error = nfsrpc_getacl(ap->a_vp, ap->a_cred, ap->a_td, ap->a_aclp,
3131 if (error > NFSERR_STALE) {
3132 (void) nfscl_maperr(ap->a_td, error, (uid_t)0, (gid_t)0);
3139 nfs_setacl(struct vop_setacl_args *ap)
3143 if (ap->a_type != ACL_TYPE_NFS4)
3144 return (EOPNOTSUPP);
3145 error = nfsrpc_setacl(ap->a_vp, ap->a_cred, ap->a_td, ap->a_aclp,
3147 if (error > NFSERR_STALE) {
3148 (void) nfscl_maperr(ap->a_td, error, (uid_t)0, (gid_t)0);
3154 #endif /* NFS4_ACL_EXTATTR_NAME */