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>
70 #include <fs/nfs/nfsport.h>
71 #include <fs/nfsclient/nfsnode.h>
72 #include <fs/nfsclient/nfsmount.h>
73 #include <fs/nfsclient/nfs.h>
76 #include <netinet/in.h>
77 #include <netinet/in_var.h>
79 #include <nfs/nfs_lock.h>
85 extern struct nfsstats newnfsstats;
86 MALLOC_DECLARE(M_NEWNFSREQ);
89 * Ifdef for FreeBSD-current merged buffer cache. It is unfortunate that these
90 * calls are not in getblk() and brelse() so that they would not be necessary
94 #define vfs_busy_pages(bp, f)
97 static vop_read_t nfsfifo_read;
98 static vop_write_t nfsfifo_write;
99 static vop_close_t nfsfifo_close;
100 static int nfs_setattrrpc(struct vnode *, struct vattr *, struct ucred *,
102 static vop_lookup_t nfs_lookup;
103 static vop_create_t nfs_create;
104 static vop_mknod_t nfs_mknod;
105 static vop_open_t nfs_open;
106 static vop_close_t nfs_close;
107 static vop_access_t nfs_access;
108 static vop_getattr_t nfs_getattr;
109 static vop_setattr_t nfs_setattr;
110 static vop_read_t nfs_read;
111 static vop_fsync_t nfs_fsync;
112 static vop_remove_t nfs_remove;
113 static vop_link_t nfs_link;
114 static vop_rename_t nfs_rename;
115 static vop_mkdir_t nfs_mkdir;
116 static vop_rmdir_t nfs_rmdir;
117 static vop_symlink_t nfs_symlink;
118 static vop_readdir_t nfs_readdir;
119 static vop_strategy_t nfs_strategy;
120 static vop_lock1_t nfs_lock1;
121 static int nfs_lookitup(struct vnode *, char *, int,
122 struct ucred *, struct thread *, struct nfsnode **);
123 static int nfs_sillyrename(struct vnode *, struct vnode *,
124 struct componentname *);
125 static vop_access_t nfsspec_access;
126 static vop_readlink_t nfs_readlink;
127 static vop_print_t nfs_print;
128 static vop_advlock_t nfs_advlock;
129 static vop_advlockasync_t nfs_advlockasync;
130 #ifdef NFS4_ACL_EXTATTR_NAME
131 static vop_getacl_t nfs_getacl;
132 static vop_setacl_t nfs_setacl;
136 * Global vfs data structures for nfs
138 struct vop_vector newnfs_vnodeops = {
139 .vop_default = &default_vnodeops,
140 .vop_access = nfs_access,
141 .vop_advlock = nfs_advlock,
142 .vop_advlockasync = nfs_advlockasync,
143 .vop_close = nfs_close,
144 .vop_create = nfs_create,
145 .vop_fsync = nfs_fsync,
146 .vop_getattr = nfs_getattr,
147 .vop_getpages = ncl_getpages,
148 .vop_putpages = ncl_putpages,
149 .vop_inactive = ncl_inactive,
150 .vop_link = nfs_link,
151 .vop_lock1 = nfs_lock1,
152 .vop_lookup = nfs_lookup,
153 .vop_mkdir = nfs_mkdir,
154 .vop_mknod = nfs_mknod,
155 .vop_open = nfs_open,
156 .vop_print = nfs_print,
157 .vop_read = nfs_read,
158 .vop_readdir = nfs_readdir,
159 .vop_readlink = nfs_readlink,
160 .vop_reclaim = ncl_reclaim,
161 .vop_remove = nfs_remove,
162 .vop_rename = nfs_rename,
163 .vop_rmdir = nfs_rmdir,
164 .vop_setattr = nfs_setattr,
165 .vop_strategy = nfs_strategy,
166 .vop_symlink = nfs_symlink,
167 .vop_write = ncl_write,
168 #ifdef NFS4_ACL_EXTATTR_NAME
169 .vop_getacl = nfs_getacl,
170 .vop_setacl = nfs_setacl,
174 struct vop_vector newnfs_fifoops = {
175 .vop_default = &fifo_specops,
176 .vop_access = nfsspec_access,
177 .vop_close = nfsfifo_close,
178 .vop_fsync = nfs_fsync,
179 .vop_getattr = nfs_getattr,
180 .vop_inactive = ncl_inactive,
181 .vop_print = nfs_print,
182 .vop_read = nfsfifo_read,
183 .vop_reclaim = ncl_reclaim,
184 .vop_setattr = nfs_setattr,
185 .vop_write = nfsfifo_write,
188 static int nfs_mknodrpc(struct vnode *dvp, struct vnode **vpp,
189 struct componentname *cnp, struct vattr *vap);
190 static int nfs_removerpc(struct vnode *dvp, struct vnode *vp, char *name,
191 int namelen, struct ucred *cred, struct thread *td);
192 static int nfs_renamerpc(struct vnode *fdvp, struct vnode *fvp,
193 char *fnameptr, int fnamelen, struct vnode *tdvp, struct vnode *tvp,
194 char *tnameptr, int tnamelen, struct ucred *cred, struct thread *td);
195 static int nfs_renameit(struct vnode *sdvp, struct vnode *svp,
196 struct componentname *scnp, struct sillyrename *sp);
201 #define DIRHDSIZ (sizeof (struct dirent) - (MAXNAMLEN + 1))
203 SYSCTL_DECL(_vfs_newnfs);
205 static int nfsaccess_cache_timeout = NFS_MAXATTRTIMO;
206 SYSCTL_INT(_vfs_newnfs, OID_AUTO, access_cache_timeout, CTLFLAG_RW,
207 &nfsaccess_cache_timeout, 0, "NFS ACCESS cache timeout");
209 static int nfs_prime_access_cache = 0;
210 SYSCTL_INT(_vfs_newnfs, OID_AUTO, prime_access_cache, CTLFLAG_RW,
211 &nfs_prime_access_cache, 0,
212 "Prime NFS ACCESS cache when fetching attributes");
214 static int newnfs_commit_on_close = 0;
215 SYSCTL_INT(_vfs_newnfs, OID_AUTO, commit_on_close, CTLFLAG_RW,
216 &newnfs_commit_on_close, 0, "write+commit on close, else only write");
218 static int nfs_clean_pages_on_close = 1;
219 SYSCTL_INT(_vfs_newnfs, OID_AUTO, clean_pages_on_close, CTLFLAG_RW,
220 &nfs_clean_pages_on_close, 0, "NFS clean dirty pages on close");
222 int newnfs_directio_enable = 0;
223 SYSCTL_INT(_vfs_newnfs, OID_AUTO, directio_enable, CTLFLAG_RW,
224 &newnfs_directio_enable, 0, "Enable NFS directio");
227 * This sysctl allows other processes to mmap a file that has been opened
228 * O_DIRECT by a process. In general, having processes mmap the file while
229 * Direct IO is in progress can lead to Data Inconsistencies. But, we allow
230 * this by default to prevent DoS attacks - to prevent a malicious user from
231 * opening up files O_DIRECT preventing other users from mmap'ing these
232 * files. "Protected" environments where stricter consistency guarantees are
233 * required can disable this knob. The process that opened the file O_DIRECT
234 * cannot mmap() the file, because mmap'ed IO on an O_DIRECT open() is not
237 int newnfs_directio_allow_mmap = 1;
238 SYSCTL_INT(_vfs_newnfs, OID_AUTO, directio_allow_mmap, CTLFLAG_RW,
239 &newnfs_directio_allow_mmap, 0, "Enable mmaped IO on file with O_DIRECT opens");
242 SYSCTL_INT(_vfs_newnfs, OID_AUTO, access_cache_hits, CTLFLAG_RD,
243 &newnfsstats.accesscache_hits, 0, "NFS ACCESS cache hit count");
245 SYSCTL_INT(_vfs_newnfs, OID_AUTO, access_cache_misses, CTLFLAG_RD,
246 &newnfsstats.accesscache_misses, 0, "NFS ACCESS cache miss count");
249 #define NFSACCESS_ALL (NFSACCESS_READ | NFSACCESS_MODIFY \
250 | NFSACCESS_EXTEND | NFSACCESS_EXECUTE \
251 | NFSACCESS_DELETE | NFSACCESS_LOOKUP)
255 * The list of locks after the description of the lock is the ordering
256 * of other locks acquired with the lock held.
257 * np->n_mtx : Protects the fields in the nfsnode.
259 VI_MTX (acquired indirectly)
260 * nmp->nm_mtx : Protects the fields in the nfsmount.
262 * ncl_iod_mutex : Global lock, protects shared nfsiod state.
263 * nfs_reqq_mtx : Global lock, protects the nfs_reqq list.
266 * rep->r_mtx : Protects the fields in an nfsreq.
270 nfs34_access_otw(struct vnode *vp, int wmode, struct thread *td,
271 struct ucred *cred, u_int32_t *retmode)
273 int error = 0, attrflag, i, lrupos;
275 struct nfsnode *np = VTONFS(vp);
276 struct nfsvattr nfsva;
278 error = nfsrpc_accessrpc(vp, wmode, cred, td, &nfsva, &attrflag,
281 (void) nfscl_loadattrcache(&vp, &nfsva, NULL, NULL, 0, 1);
284 mtx_lock(&np->n_mtx);
285 for (i = 0; i < NFS_ACCESSCACHESIZE; i++) {
286 if (np->n_accesscache[i].uid == cred->cr_uid) {
287 np->n_accesscache[i].mode = rmode;
288 np->n_accesscache[i].stamp = time_second;
291 if (i > 0 && np->n_accesscache[i].stamp <
292 np->n_accesscache[lrupos].stamp)
295 if (i == NFS_ACCESSCACHESIZE) {
296 np->n_accesscache[lrupos].uid = cred->cr_uid;
297 np->n_accesscache[lrupos].mode = rmode;
298 np->n_accesscache[lrupos].stamp = time_second;
300 mtx_unlock(&np->n_mtx);
303 } else if (NFS_ISV4(vp)) {
304 error = nfscl_maperr(td, error, (uid_t)0, (gid_t)0);
310 * nfs access vnode op.
311 * For nfs version 2, just return ok. File accesses may fail later.
312 * For nfs version 3, use the access rpc to check accessibility. If file modes
313 * are changed on the server, accesses might still fail later.
316 nfs_access(struct vop_access_args *ap)
318 struct vnode *vp = ap->a_vp;
319 int error = 0, i, gotahit;
320 u_int32_t mode, wmode, rmode;
321 int v34 = NFS_ISV34(vp);
322 struct nfsnode *np = VTONFS(vp);
325 * Disallow write attempts on filesystems mounted read-only;
326 * unless the file is a socket, fifo, or a block or character
327 * device resident on the filesystem.
329 if ((ap->a_accmode & (VWRITE | VAPPEND
330 #ifdef NFS4_ACL_EXTATTR_NAME
331 | VWRITE_NAMED_ATTRS | VDELETE_CHILD | VWRITE_ATTRIBUTES |
332 VDELETE | VWRITE_ACL | VWRITE_OWNER
334 )) != 0 && (vp->v_mount->mnt_flag & MNT_RDONLY) != 0) {
335 switch (vp->v_type) {
345 * For nfs v3 or v4, check to see if we have done this recently, and if
346 * so return our cached result instead of making an ACCESS call.
347 * If not, do an access rpc, otherwise you are stuck emulating
348 * ufs_access() locally using the vattr. This may not be correct,
349 * since the server may apply other access criteria such as
350 * client uid-->server uid mapping that we do not know about.
353 if (ap->a_accmode & VREAD)
354 mode = NFSACCESS_READ;
357 if (vp->v_type != VDIR) {
358 if (ap->a_accmode & VWRITE)
359 mode |= (NFSACCESS_MODIFY | NFSACCESS_EXTEND);
360 if (ap->a_accmode & VAPPEND)
361 mode |= NFSACCESS_EXTEND;
362 if (ap->a_accmode & VEXEC)
363 mode |= NFSACCESS_EXECUTE;
364 #ifdef NFS4_ACL_EXTATTR_NAME
365 if (ap->a_accmode & VDELETE)
366 mode |= NFSACCESS_DELETE;
369 if (ap->a_accmode & VWRITE)
370 mode |= (NFSACCESS_MODIFY | NFSACCESS_EXTEND);
371 if (ap->a_accmode & VAPPEND)
372 mode |= NFSACCESS_EXTEND;
373 if (ap->a_accmode & VEXEC)
374 mode |= NFSACCESS_LOOKUP;
375 #ifdef NFS4_ACL_EXTATTR_NAME
376 if (ap->a_accmode & VDELETE)
377 mode |= NFSACCESS_DELETE;
378 if (ap->a_accmode & VDELETE_CHILD)
379 mode |= NFSACCESS_MODIFY;
382 /* XXX safety belt, only make blanket request if caching */
383 if (nfsaccess_cache_timeout > 0) {
384 wmode = NFSACCESS_READ | NFSACCESS_MODIFY |
385 NFSACCESS_EXTEND | NFSACCESS_EXECUTE |
386 NFSACCESS_DELETE | NFSACCESS_LOOKUP;
392 * Does our cached result allow us to give a definite yes to
396 mtx_lock(&np->n_mtx);
397 for (i = 0; i < NFS_ACCESSCACHESIZE; i++) {
398 if (ap->a_cred->cr_uid == np->n_accesscache[i].uid) {
399 if (time_second < (np->n_accesscache[i].stamp
400 + nfsaccess_cache_timeout) &&
401 (np->n_accesscache[i].mode & mode) == mode) {
402 NFSINCRGLOBAL(newnfsstats.accesscache_hits);
408 mtx_unlock(&np->n_mtx);
411 * Either a no, or a don't know. Go to the wire.
413 NFSINCRGLOBAL(newnfsstats.accesscache_misses);
414 error = nfs34_access_otw(vp, wmode, ap->a_td,
417 (rmode & mode) != mode)
422 if ((error = nfsspec_access(ap)) != 0) {
426 * Attempt to prevent a mapped root from accessing a file
427 * which it shouldn't. We try to read a byte from the file
428 * if the user is root and the file is not zero length.
429 * After calling nfsspec_access, we should have the correct
432 mtx_lock(&np->n_mtx);
433 if (ap->a_cred->cr_uid == 0 && (ap->a_accmode & VREAD)
434 && VTONFS(vp)->n_size > 0) {
439 mtx_unlock(&np->n_mtx);
442 auio.uio_iov = &aiov;
446 auio.uio_segflg = UIO_SYSSPACE;
447 auio.uio_rw = UIO_READ;
448 auio.uio_td = ap->a_td;
450 if (vp->v_type == VREG)
451 error = ncl_readrpc(vp, &auio, ap->a_cred);
452 else if (vp->v_type == VDIR) {
454 bp = malloc(NFS_DIRBLKSIZ, M_TEMP, M_WAITOK);
456 aiov.iov_len = auio.uio_resid = NFS_DIRBLKSIZ;
457 error = ncl_readdirrpc(vp, &auio, ap->a_cred,
460 } else if (vp->v_type == VLNK)
461 error = ncl_readlinkrpc(vp, &auio, ap->a_cred);
465 mtx_unlock(&np->n_mtx);
473 * Check to see if the type is ok
474 * and that deletion is not in progress.
475 * For paged in text files, you will need to flush the page cache
476 * if consistency is lost.
480 nfs_open(struct vop_open_args *ap)
482 struct vnode *vp = ap->a_vp;
483 struct nfsnode *np = VTONFS(vp);
486 int fmode = ap->a_mode;
488 if (vp->v_type != VREG && vp->v_type != VDIR && vp->v_type != VLNK)
492 * For NFSv4, we need to do the Open Op before cache validation,
493 * so that we conform to RFC3530 Sec. 9.3.1.
496 error = nfsrpc_open(vp, fmode, ap->a_cred, ap->a_td);
498 error = nfscl_maperr(ap->a_td, error, (uid_t)0,
505 * Now, if this Open will be doing reading, re-validate/flush the
506 * cache, so that Close/Open coherency is maintained.
508 mtx_lock(&np->n_mtx);
509 if (np->n_flag & NMODIFIED) {
510 mtx_unlock(&np->n_mtx);
511 error = ncl_vinvalbuf(vp, V_SAVE, ap->a_td, 1);
512 if (error == EINTR || error == EIO) {
514 (void) nfsrpc_close(vp, 0, ap->a_td);
517 mtx_lock(&np->n_mtx);
519 if (vp->v_type == VDIR)
520 np->n_direofoffset = 0;
521 mtx_unlock(&np->n_mtx);
522 error = VOP_GETATTR(vp, &vattr, ap->a_cred);
525 (void) nfsrpc_close(vp, 0, ap->a_td);
528 mtx_lock(&np->n_mtx);
529 np->n_mtime = vattr.va_mtime;
531 np->n_change = vattr.va_filerev;
533 mtx_unlock(&np->n_mtx);
534 error = VOP_GETATTR(vp, &vattr, ap->a_cred);
537 (void) nfsrpc_close(vp, 0, ap->a_td);
540 mtx_lock(&np->n_mtx);
541 if ((NFS_ISV4(vp) && np->n_change != vattr.va_filerev) ||
542 NFS_TIMESPEC_COMPARE(&np->n_mtime, &vattr.va_mtime)) {
543 if (vp->v_type == VDIR)
544 np->n_direofoffset = 0;
545 mtx_unlock(&np->n_mtx);
546 error = ncl_vinvalbuf(vp, V_SAVE, ap->a_td, 1);
547 if (error == EINTR || error == EIO) {
549 (void) nfsrpc_close(vp, 0, ap->a_td);
552 mtx_lock(&np->n_mtx);
553 np->n_mtime = vattr.va_mtime;
555 np->n_change = vattr.va_filerev;
560 * If the object has >= 1 O_DIRECT active opens, we disable caching.
562 if (newnfs_directio_enable && (fmode & O_DIRECT) &&
563 (vp->v_type == VREG)) {
564 if (np->n_directio_opens == 0) {
565 mtx_unlock(&np->n_mtx);
566 error = ncl_vinvalbuf(vp, V_SAVE, ap->a_td, 1);
569 (void) nfsrpc_close(vp, 0, ap->a_td);
572 mtx_lock(&np->n_mtx);
573 np->n_flag |= NNONCACHE;
575 np->n_directio_opens++;
577 mtx_unlock(&np->n_mtx);
578 vnode_create_vobject(vp, vattr.va_size, ap->a_td);
584 * What an NFS client should do upon close after writing is a debatable issue.
585 * Most NFS clients push delayed writes to the server upon close, basically for
587 * 1 - So that any write errors may be reported back to the client process
588 * doing the close system call. By far the two most likely errors are
589 * NFSERR_NOSPC and NFSERR_DQUOT to indicate space allocation failure.
590 * 2 - To put a worst case upper bound on cache inconsistency between
591 * multiple clients for the file.
592 * There is also a consistency problem for Version 2 of the protocol w.r.t.
593 * not being able to tell if other clients are writing a file concurrently,
594 * since there is no way of knowing if the changed modify time in the reply
595 * is only due to the write for this client.
596 * (NFS Version 3 provides weak cache consistency data in the reply that
597 * should be sufficient to detect and handle this case.)
599 * The current code does the following:
600 * for NFS Version 2 - play it safe and flush/invalidate all dirty buffers
601 * for NFS Version 3 - flush dirty buffers to the server but don't invalidate
602 * or commit them (this satisfies 1 and 2 except for the
603 * case where the server crashes after this close but
604 * before the commit RPC, which is felt to be "good
605 * enough". Changing the last argument to ncl_flush() to
606 * a 1 would force a commit operation, if it is felt a
607 * commit is necessary now.
608 * for NFS Version 4 - flush the dirty buffers and commit them, if
609 * nfscl_mustflush() says this is necessary.
610 * It is necessary if there is no write delegation held,
611 * in order to satisfy open/close coherency.
612 * If the file isn't cached on local stable storage,
613 * it may be necessary in order to detect "out of space"
614 * errors from the server, if the write delegation
615 * issued by the server doesn't allow the file to grow.
619 nfs_close(struct vop_close_args *ap)
621 struct vnode *vp = ap->a_vp;
622 struct nfsnode *np = VTONFS(vp);
623 struct nfsvattr nfsva;
625 int error = 0, ret, localcred = 0;
626 int fmode = ap->a_fflag;
628 if ((vp->v_mount->mnt_kern_flag & MNTK_UNMOUNTF))
631 * During shutdown, a_cred isn't valid, so just use root.
633 if (ap->a_cred == NOCRED) {
634 cred = newnfs_getcred();
639 if (vp->v_type == VREG) {
641 * Examine and clean dirty pages, regardless of NMODIFIED.
642 * This closes a major hole in close-to-open consistency.
643 * We want to push out all dirty pages (and buffers) on
644 * close, regardless of whether they were dirtied by
645 * mmap'ed writes or via write().
647 if (nfs_clean_pages_on_close && vp->v_object) {
648 VM_OBJECT_LOCK(vp->v_object);
649 vm_object_page_clean(vp->v_object, 0, 0, 0);
650 VM_OBJECT_UNLOCK(vp->v_object);
652 mtx_lock(&np->n_mtx);
653 if (np->n_flag & NMODIFIED) {
654 mtx_unlock(&np->n_mtx);
657 * Under NFSv3 we have dirty buffers to dispose of. We
658 * must flush them to the NFS server. We have the option
659 * of waiting all the way through the commit rpc or just
660 * waiting for the initial write. The default is to only
661 * wait through the initial write so the data is in the
662 * server's cache, which is roughly similar to the state
663 * a standard disk subsystem leaves the file in on close().
665 * We cannot clear the NMODIFIED bit in np->n_flag due to
666 * potential races with other processes, and certainly
667 * cannot clear it if we don't commit.
668 * These races occur when there is no longer the old
669 * traditional vnode locking implemented for Vnode Ops.
671 int cm = newnfs_commit_on_close ? 1 : 0;
672 error = ncl_flush(vp, MNT_WAIT, cred, ap->a_td, cm, 0);
673 /* np->n_flag &= ~NMODIFIED; */
674 } else if (NFS_ISV4(vp)) {
675 if (nfscl_mustflush(vp) != 0) {
676 int cm = newnfs_commit_on_close ? 1 : 0;
677 error = ncl_flush(vp, MNT_WAIT, cred, ap->a_td,
680 * as above w.r.t races when clearing
682 * np->n_flag &= ~NMODIFIED;
686 error = ncl_vinvalbuf(vp, V_SAVE, ap->a_td, 1);
687 mtx_lock(&np->n_mtx);
690 * Invalidate the attribute cache in all cases.
691 * An open is going to fetch fresh attrs any way, other procs
692 * on this node that have file open will be forced to do an
693 * otw attr fetch, but this is safe.
694 * --> A user found that their RPC count dropped by 20% when
695 * this was commented out and I can't see any requirement
696 * for it, so I've disabled it when negative lookups are
697 * enabled. (What does this have to do with negative lookup
698 * caching? Well nothing, except it was reported by the
699 * same user that needed negative lookup caching and I wanted
700 * there to be a way to disable it to see if it
701 * is the cause of some caching/coherency issue that might
704 if (VFSTONFS(vp->v_mount)->nm_negnametimeo == 0)
706 if (np->n_flag & NWRITEERR) {
707 np->n_flag &= ~NWRITEERR;
710 mtx_unlock(&np->n_mtx);
715 * Get attributes so "change" is up to date.
717 if (error == 0 && nfscl_mustflush(vp) != 0) {
718 ret = nfsrpc_getattr(vp, cred, ap->a_td, &nfsva,
721 np->n_change = nfsva.na_filerev;
722 (void) nfscl_loadattrcache(&vp, &nfsva, NULL,
730 ret = nfsrpc_close(vp, 0, ap->a_td);
734 error = nfscl_maperr(ap->a_td, error, (uid_t)0,
737 if (newnfs_directio_enable)
738 KASSERT((np->n_directio_asyncwr == 0),
739 ("nfs_close: dirty unflushed (%d) directio buffers\n",
740 np->n_directio_asyncwr));
741 if (newnfs_directio_enable && (fmode & O_DIRECT) && (vp->v_type == VREG)) {
742 mtx_lock(&np->n_mtx);
743 KASSERT((np->n_directio_opens > 0),
744 ("nfs_close: unexpectedly value (0) of n_directio_opens\n"));
745 np->n_directio_opens--;
746 if (np->n_directio_opens == 0)
747 np->n_flag &= ~NNONCACHE;
748 mtx_unlock(&np->n_mtx);
756 * nfs getattr call from vfs.
759 nfs_getattr(struct vop_getattr_args *ap)
761 struct vnode *vp = ap->a_vp;
762 struct thread *td = curthread; /* XXX */
763 struct nfsnode *np = VTONFS(vp);
765 struct nfsvattr nfsva;
766 struct vattr *vap = ap->a_vap;
770 * Update local times for special files.
772 mtx_lock(&np->n_mtx);
773 if (np->n_flag & (NACC | NUPD))
775 mtx_unlock(&np->n_mtx);
777 * First look in the cache.
779 if (ncl_getattrcache(vp, &vattr) == 0) {
780 vap->va_type = vattr.va_type;
781 vap->va_mode = vattr.va_mode;
782 vap->va_nlink = vattr.va_nlink;
783 vap->va_uid = vattr.va_uid;
784 vap->va_gid = vattr.va_gid;
785 vap->va_fsid = vattr.va_fsid;
786 vap->va_fileid = vattr.va_fileid;
787 vap->va_size = vattr.va_size;
788 vap->va_blocksize = vattr.va_blocksize;
789 vap->va_atime = vattr.va_atime;
790 vap->va_mtime = vattr.va_mtime;
791 vap->va_ctime = vattr.va_ctime;
792 vap->va_gen = vattr.va_gen;
793 vap->va_flags = vattr.va_flags;
794 vap->va_rdev = vattr.va_rdev;
795 vap->va_bytes = vattr.va_bytes;
796 vap->va_filerev = vattr.va_filerev;
798 * Get the local modify time for the case of a write
801 nfscl_deleggetmodtime(vp, &vap->va_mtime);
805 if (NFS_ISV34(vp) && nfs_prime_access_cache &&
806 nfsaccess_cache_timeout > 0) {
807 NFSINCRGLOBAL(newnfsstats.accesscache_misses);
808 nfs34_access_otw(vp, NFSACCESS_ALL, td, ap->a_cred, NULL);
809 if (ncl_getattrcache(vp, ap->a_vap) == 0) {
810 nfscl_deleggetmodtime(vp, &ap->a_vap->va_mtime);
814 error = nfsrpc_getattr(vp, ap->a_cred, td, &nfsva, NULL);
816 error = nfscl_loadattrcache(&vp, &nfsva, vap, NULL, 0, 0);
819 * Get the local modify time for the case of a write
822 nfscl_deleggetmodtime(vp, &vap->va_mtime);
823 } else if (NFS_ISV4(vp)) {
824 error = nfscl_maperr(td, error, (uid_t)0, (gid_t)0);
833 nfs_setattr(struct vop_setattr_args *ap)
835 struct vnode *vp = ap->a_vp;
836 struct nfsnode *np = VTONFS(vp);
837 struct thread *td = curthread; /* XXX */
838 struct vattr *vap = ap->a_vap;
847 * Setting of flags and marking of atimes are not supported.
849 if (vap->va_flags != VNOVAL)
853 * Disallow write attempts if the filesystem is mounted read-only.
855 if ((vap->va_flags != VNOVAL || vap->va_uid != (uid_t)VNOVAL ||
856 vap->va_gid != (gid_t)VNOVAL || vap->va_atime.tv_sec != VNOVAL ||
857 vap->va_mtime.tv_sec != VNOVAL || vap->va_mode != (mode_t)VNOVAL) &&
858 (vp->v_mount->mnt_flag & MNT_RDONLY))
860 if (vap->va_size != VNOVAL) {
861 switch (vp->v_type) {
868 if (vap->va_mtime.tv_sec == VNOVAL &&
869 vap->va_atime.tv_sec == VNOVAL &&
870 vap->va_mode == (mode_t)VNOVAL &&
871 vap->va_uid == (uid_t)VNOVAL &&
872 vap->va_gid == (gid_t)VNOVAL)
874 vap->va_size = VNOVAL;
878 * Disallow write attempts if the filesystem is
881 if (vp->v_mount->mnt_flag & MNT_RDONLY)
884 * We run vnode_pager_setsize() early (why?),
885 * we must set np->n_size now to avoid vinvalbuf
886 * V_SAVE races that might setsize a lower
889 mtx_lock(&np->n_mtx);
891 mtx_unlock(&np->n_mtx);
892 error = ncl_meta_setsize(vp, ap->a_cred, td,
894 mtx_lock(&np->n_mtx);
895 if (np->n_flag & NMODIFIED) {
897 mtx_unlock(&np->n_mtx);
898 if (vap->va_size == 0)
899 error = ncl_vinvalbuf(vp, 0, td, 1);
901 error = ncl_vinvalbuf(vp, V_SAVE, td, 1);
903 vnode_pager_setsize(vp, tsize);
907 * Call nfscl_delegmodtime() to set the modify time
908 * locally, as required.
910 nfscl_delegmodtime(vp);
912 mtx_unlock(&np->n_mtx);
914 * np->n_size has already been set to vap->va_size
915 * in ncl_meta_setsize(). We must set it again since
916 * nfs_loadattrcache() could be called through
917 * ncl_meta_setsize() and could modify np->n_size.
919 mtx_lock(&np->n_mtx);
920 np->n_vattr.na_size = np->n_size = vap->va_size;
921 mtx_unlock(&np->n_mtx);
924 mtx_lock(&np->n_mtx);
925 if ((vap->va_mtime.tv_sec != VNOVAL || vap->va_atime.tv_sec != VNOVAL) &&
926 (np->n_flag & NMODIFIED) && vp->v_type == VREG) {
927 mtx_unlock(&np->n_mtx);
928 if ((error = ncl_vinvalbuf(vp, V_SAVE, td, 1)) != 0 &&
929 (error == EINTR || error == EIO))
932 mtx_unlock(&np->n_mtx);
934 error = nfs_setattrrpc(vp, vap, ap->a_cred, td);
935 if (error && vap->va_size != VNOVAL) {
936 mtx_lock(&np->n_mtx);
937 np->n_size = np->n_vattr.na_size = tsize;
938 vnode_pager_setsize(vp, tsize);
939 mtx_unlock(&np->n_mtx);
945 * Do an nfs setattr rpc.
948 nfs_setattrrpc(struct vnode *vp, struct vattr *vap, struct ucred *cred,
951 struct nfsnode *np = VTONFS(vp);
952 int error, ret, attrflag, i;
953 struct nfsvattr nfsva;
956 mtx_lock(&np->n_mtx);
957 for (i = 0; i < NFS_ACCESSCACHESIZE; i++)
958 np->n_accesscache[i].stamp = 0;
959 np->n_flag |= NDELEGMOD;
960 mtx_unlock(&np->n_mtx);
962 error = nfsrpc_setattr(vp, vap, NULL, cred, td, &nfsva, &attrflag,
965 ret = nfscl_loadattrcache(&vp, &nfsva, NULL, NULL, 0, 1);
969 if (error && NFS_ISV4(vp))
970 error = nfscl_maperr(td, error, vap->va_uid, vap->va_gid);
975 * nfs lookup call, one step at a time...
976 * First look in cache
977 * If not found, unlock the directory nfsnode and do the rpc
980 nfs_lookup(struct vop_lookup_args *ap)
982 struct componentname *cnp = ap->a_cnp;
983 struct vnode *dvp = ap->a_dvp;
984 struct vnode **vpp = ap->a_vpp;
985 struct mount *mp = dvp->v_mount;
986 int flags = cnp->cn_flags;
988 struct nfsmount *nmp;
989 struct nfsnode *np, *newnp;
990 int error = 0, attrflag, dattrflag, ltype;
991 struct thread *td = cnp->cn_thread;
993 struct nfsvattr dnfsva, nfsva;
995 struct timespec dmtime;
998 if ((flags & ISLASTCN) && (mp->mnt_flag & MNT_RDONLY) &&
999 (cnp->cn_nameiop == DELETE || cnp->cn_nameiop == RENAME))
1001 if (dvp->v_type != VDIR)
1006 /* For NFSv4, wait until any remove is done. */
1007 mtx_lock(&np->n_mtx);
1008 while (NFSHASNFSV4(nmp) && (np->n_flag & NREMOVEINPROG)) {
1009 np->n_flag |= NREMOVEWANT;
1010 (void) msleep((caddr_t)np, &np->n_mtx, PZERO, "nfslkup", 0);
1012 mtx_unlock(&np->n_mtx);
1014 if ((error = VOP_ACCESS(dvp, VEXEC, cnp->cn_cred, td)) != 0)
1016 error = cache_lookup(dvp, vpp, cnp);
1017 if (error > 0 && error != ENOENT)
1021 * We only accept a positive hit in the cache if the
1022 * change time of the file matches our cached copy.
1023 * Otherwise, we discard the cache entry and fallback
1024 * to doing a lookup RPC.
1026 * To better handle stale file handles and attributes,
1027 * clear the attribute cache of this node if it is a
1028 * leaf component, part of an open() call, and not
1029 * locally modified before fetching the attributes.
1030 * This should allow stale file handles to be detected
1031 * here where we can fall back to a LOOKUP RPC to
1032 * recover rather than having nfs_open() detect the
1033 * stale file handle and failing open(2) with ESTALE.
1036 newnp = VTONFS(newvp);
1037 if ((flags & (ISLASTCN | ISOPEN)) == (ISLASTCN | ISOPEN) &&
1038 !(newnp->n_flag & NMODIFIED)) {
1039 mtx_lock(&newnp->n_mtx);
1040 newnp->n_attrstamp = 0;
1041 mtx_unlock(&newnp->n_mtx);
1043 if (nfscl_nodeleg(newvp, 0) == 0 ||
1044 (VOP_GETATTR(newvp, &vattr, cnp->cn_cred) == 0 &&
1045 timespeccmp(&vattr.va_ctime, &newnp->n_ctime, ==))) {
1046 NFSINCRGLOBAL(newnfsstats.lookupcache_hits);
1047 if (cnp->cn_nameiop != LOOKUP &&
1049 cnp->cn_flags |= SAVENAME;
1058 } else if (error == ENOENT) {
1059 if (dvp->v_iflag & VI_DOOMED)
1062 * We only accept a negative hit in the cache if the
1063 * modification time of the parent directory matches
1064 * our cached copy. Otherwise, we discard all of the
1065 * negative cache entries for this directory. We also
1066 * only trust -ve cache entries for less than
1067 * nm_negative_namecache_timeout seconds.
1069 if ((u_int)(ticks - np->n_dmtime_ticks) <
1070 (nmp->nm_negnametimeo * hz) &&
1071 VOP_GETATTR(dvp, &vattr, cnp->cn_cred) == 0 &&
1072 timespeccmp(&vattr.va_mtime, &np->n_dmtime, ==)) {
1073 NFSINCRGLOBAL(newnfsstats.lookupcache_hits);
1076 cache_purge_negative(dvp);
1077 mtx_lock(&np->n_mtx);
1078 timespecclear(&np->n_dmtime);
1079 mtx_unlock(&np->n_mtx);
1083 * Cache the modification time of the parent directory in case
1084 * the lookup fails and results in adding the first negative
1085 * name cache entry for the directory. Since this is reading
1086 * a single time_t, don't bother with locking. The
1087 * modification time may be a bit stale, but it must be read
1088 * before performing the lookup RPC to prevent a race where
1089 * another lookup updates the timestamp on the directory after
1090 * the lookup RPC has been performed on the server but before
1091 * n_dmtime is set at the end of this function.
1093 dmtime = np->n_vattr.na_mtime;
1096 NFSINCRGLOBAL(newnfsstats.lookupcache_misses);
1097 error = nfsrpc_lookup(dvp, cnp->cn_nameptr, cnp->cn_namelen,
1098 cnp->cn_cred, td, &dnfsva, &nfsva, &nfhp, &attrflag, &dattrflag,
1101 (void) nfscl_loadattrcache(&dvp, &dnfsva, NULL, NULL, 0, 1);
1103 if (newvp != NULLVP) {
1108 if (error != ENOENT) {
1110 error = nfscl_maperr(td, error, (uid_t)0,
1115 /* The requested file was not found. */
1116 if ((cnp->cn_nameiop == CREATE || cnp->cn_nameiop == RENAME) &&
1117 (flags & ISLASTCN)) {
1119 * XXX: UFS does a full VOP_ACCESS(dvp,
1120 * VWRITE) here instead of just checking
1123 if (mp->mnt_flag & MNT_RDONLY)
1125 cnp->cn_flags |= SAVENAME;
1126 return (EJUSTRETURN);
1129 if ((cnp->cn_flags & MAKEENTRY) && cnp->cn_nameiop != CREATE) {
1131 * Maintain n_dmtime as the modification time
1132 * of the parent directory when the oldest -ve
1133 * name cache entry for this directory was
1134 * added. If a -ve cache entry has already
1135 * been added with a newer modification time
1136 * by a concurrent lookup, then don't bother
1137 * adding a cache entry. The modification
1138 * time of the directory might have changed
1139 * due to the file this lookup failed to find
1140 * being created. In that case a subsequent
1141 * lookup would incorrectly use the entry
1142 * added here instead of doing an extra
1145 mtx_lock(&np->n_mtx);
1146 if (timespeccmp(&np->n_dmtime, &dmtime, <=)) {
1147 if (!timespecisset(&np->n_dmtime)) {
1148 np->n_dmtime = dmtime;
1149 np->n_dmtime_ticks = ticks;
1151 mtx_unlock(&np->n_mtx);
1152 cache_enter(dvp, NULL, cnp);
1154 mtx_unlock(&np->n_mtx);
1160 * Handle RENAME case...
1162 if (cnp->cn_nameiop == RENAME && (flags & ISLASTCN)) {
1163 if (NFS_CMPFH(np, nfhp->nfh_fh, nfhp->nfh_len)) {
1164 FREE((caddr_t)nfhp, M_NFSFH);
1167 error = nfscl_nget(mp, dvp, nfhp, cnp, td, &np, NULL);
1172 (void) nfscl_loadattrcache(&newvp, &nfsva, NULL, NULL,
1175 cnp->cn_flags |= SAVENAME;
1179 if (flags & ISDOTDOT) {
1180 ltype = VOP_ISLOCKED(dvp);
1181 error = vfs_busy(mp, MBF_NOWAIT);
1185 error = vfs_busy(mp, 0);
1186 vn_lock(dvp, ltype | LK_RETRY);
1188 if (error == 0 && (dvp->v_iflag & VI_DOOMED)) {
1196 error = nfscl_nget(mp, dvp, nfhp, cnp, td, &np, NULL);
1201 vn_lock(dvp, ltype | LK_RETRY);
1202 if (dvp->v_iflag & VI_DOOMED) {
1214 (void) nfscl_loadattrcache(&newvp, &nfsva, NULL, NULL,
1216 } else if (NFS_CMPFH(np, nfhp->nfh_fh, nfhp->nfh_len)) {
1217 FREE((caddr_t)nfhp, M_NFSFH);
1221 (void) nfscl_loadattrcache(&newvp, &nfsva, NULL, NULL,
1224 error = nfscl_nget(mp, dvp, nfhp, cnp, td, &np, NULL);
1229 (void) nfscl_loadattrcache(&newvp, &nfsva, NULL, NULL,
1231 else if ((flags & (ISLASTCN | ISOPEN)) == (ISLASTCN | ISOPEN) &&
1232 !(np->n_flag & NMODIFIED)) {
1234 * Flush the attribute cache when opening a
1235 * leaf node to ensure that fresh attributes
1236 * are fetched in nfs_open() since we did not
1237 * fetch attributes from the LOOKUP reply.
1239 mtx_lock(&np->n_mtx);
1240 np->n_attrstamp = 0;
1241 mtx_unlock(&np->n_mtx);
1244 if (cnp->cn_nameiop != LOOKUP && (flags & ISLASTCN))
1245 cnp->cn_flags |= SAVENAME;
1246 if ((cnp->cn_flags & MAKEENTRY) &&
1247 (cnp->cn_nameiop != DELETE || !(flags & ISLASTCN))) {
1248 np->n_ctime = np->n_vattr.na_vattr.va_ctime;
1249 cache_enter(dvp, newvp, cnp);
1257 * Just call ncl_bioread() to do the work.
1260 nfs_read(struct vop_read_args *ap)
1262 struct vnode *vp = ap->a_vp;
1264 switch (vp->v_type) {
1266 return (ncl_bioread(vp, ap->a_uio, ap->a_ioflag, ap->a_cred));
1270 return (EOPNOTSUPP);
1278 nfs_readlink(struct vop_readlink_args *ap)
1280 struct vnode *vp = ap->a_vp;
1282 if (vp->v_type != VLNK)
1284 return (ncl_bioread(vp, ap->a_uio, 0, ap->a_cred));
1288 * Do a readlink rpc.
1289 * Called by ncl_doio() from below the buffer cache.
1292 ncl_readlinkrpc(struct vnode *vp, struct uio *uiop, struct ucred *cred)
1294 int error, ret, attrflag;
1295 struct nfsvattr nfsva;
1297 error = nfsrpc_readlink(vp, uiop, cred, uiop->uio_td, &nfsva,
1300 ret = nfscl_loadattrcache(&vp, &nfsva, NULL, NULL, 0, 1);
1304 if (error && NFS_ISV4(vp))
1305 error = nfscl_maperr(uiop->uio_td, error, (uid_t)0, (gid_t)0);
1314 ncl_readrpc(struct vnode *vp, struct uio *uiop, struct ucred *cred)
1316 int error, ret, attrflag;
1317 struct nfsvattr nfsva;
1319 error = nfsrpc_read(vp, uiop, cred, uiop->uio_td, &nfsva, &attrflag,
1322 ret = nfscl_loadattrcache(&vp, &nfsva, NULL, NULL, 0, 1);
1326 if (error && NFS_ISV4(vp))
1327 error = nfscl_maperr(uiop->uio_td, error, (uid_t)0, (gid_t)0);
1335 ncl_writerpc(struct vnode *vp, struct uio *uiop, struct ucred *cred,
1336 int *iomode, int *must_commit, int called_from_strategy)
1338 struct nfsvattr nfsva;
1339 int error = 0, attrflag, ret;
1340 u_char verf[NFSX_VERF];
1341 struct nfsmount *nmp = VFSTONFS(vp->v_mount);
1344 error = nfsrpc_write(vp, uiop, iomode, verf, cred,
1345 uiop->uio_td, &nfsva, &attrflag, NULL, called_from_strategy);
1347 if (!error && NFSHASWRITEVERF(nmp) &&
1348 NFSBCMP(verf, nmp->nm_verf, NFSX_VERF)) {
1350 NFSBCOPY(verf, nmp->nm_verf, NFSX_VERF);
1354 if (VTONFS(vp)->n_flag & ND_NFSV4)
1355 ret = nfscl_loadattrcache(&vp, &nfsva, NULL, NULL, 1,
1358 ret = nfscl_loadattrcache(&vp, &nfsva, NULL, NULL, 0,
1363 if (vp->v_mount->mnt_kern_flag & MNTK_ASYNC)
1364 *iomode = NFSWRITE_FILESYNC;
1365 if (error && NFS_ISV4(vp))
1366 error = nfscl_maperr(uiop->uio_td, error, (uid_t)0, (gid_t)0);
1372 * For NFS v2 this is a kludge. Use a create rpc but with the IFMT bits of the
1373 * mode set to specify the file type and the size field for rdev.
1376 nfs_mknodrpc(struct vnode *dvp, struct vnode **vpp, struct componentname *cnp,
1379 struct nfsvattr nfsva, dnfsva;
1380 struct vnode *newvp = NULL;
1381 struct nfsnode *np = NULL, *dnp;
1384 int error = 0, attrflag, dattrflag;
1387 if (vap->va_type == VCHR || vap->va_type == VBLK)
1388 rdev = vap->va_rdev;
1389 else if (vap->va_type == VFIFO || vap->va_type == VSOCK)
1392 return (EOPNOTSUPP);
1393 if ((error = VOP_GETATTR(dvp, &vattr, cnp->cn_cred)))
1395 error = nfsrpc_mknod(dvp, cnp->cn_nameptr, cnp->cn_namelen, vap,
1396 rdev, vap->va_type, cnp->cn_cred, cnp->cn_thread, &dnfsva,
1397 &nfsva, &nfhp, &attrflag, &dattrflag, NULL);
1400 (void) nfsrpc_lookup(dvp, cnp->cn_nameptr,
1401 cnp->cn_namelen, cnp->cn_cred, cnp->cn_thread,
1402 &dnfsva, &nfsva, &nfhp, &attrflag, &dattrflag,
1405 error = nfscl_nget(dvp->v_mount, dvp, nfhp, cnp,
1406 cnp->cn_thread, &np, NULL);
1409 (void) nfscl_loadattrcache(&dvp, &dnfsva, NULL, NULL, 0, 1);
1413 error = nfscl_loadattrcache(&newvp, &nfsva, NULL, NULL,
1417 if ((cnp->cn_flags & MAKEENTRY))
1418 cache_enter(dvp, newvp, cnp);
1420 } else if (NFS_ISV4(dvp)) {
1421 error = nfscl_maperr(cnp->cn_thread, error, vap->va_uid,
1425 mtx_lock(&dnp->n_mtx);
1426 dnp->n_flag |= NMODIFIED;
1428 dnp->n_attrstamp = 0;
1429 mtx_unlock(&dnp->n_mtx);
1435 * just call nfs_mknodrpc() to do the work.
1439 nfs_mknod(struct vop_mknod_args *ap)
1441 return (nfs_mknodrpc(ap->a_dvp, ap->a_vpp, ap->a_cnp, ap->a_vap));
1444 static u_long create_verf;
1446 * nfs file create call
1449 nfs_create(struct vop_create_args *ap)
1451 struct vnode *dvp = ap->a_dvp;
1452 struct vattr *vap = ap->a_vap;
1453 struct componentname *cnp = ap->a_cnp;
1454 struct nfsnode *np = NULL, *dnp;
1455 struct vnode *newvp = NULL;
1456 struct nfsmount *nmp;
1457 struct nfsvattr dnfsva, nfsva;
1460 int error = 0, attrflag, dattrflag, fmode = 0;
1464 * Oops, not for me..
1466 if (vap->va_type == VSOCK)
1467 return (nfs_mknodrpc(dvp, ap->a_vpp, cnp, vap));
1469 if ((error = VOP_GETATTR(dvp, &vattr, cnp->cn_cred)))
1471 if (vap->va_vaflags & VA_EXCLUSIVE)
1474 nmp = VFSTONFS(vnode_mount(dvp));
1476 /* For NFSv4, wait until any remove is done. */
1477 mtx_lock(&dnp->n_mtx);
1478 while (NFSHASNFSV4(nmp) && (dnp->n_flag & NREMOVEINPROG)) {
1479 dnp->n_flag |= NREMOVEWANT;
1480 (void) msleep((caddr_t)dnp, &dnp->n_mtx, PZERO, "nfscrt", 0);
1482 mtx_unlock(&dnp->n_mtx);
1485 CURVNET_SET(CRED_TO_VNET(cnp->cn_cred));
1487 if (!TAILQ_EMPTY(&V_in_ifaddrhead))
1488 cverf.lval[0] = IA_SIN(TAILQ_FIRST(&V_in_ifaddrhead))->sin_addr.s_addr;
1491 cverf.lval[0] = create_verf;
1493 IN_IFADDR_RUNLOCK();
1496 cverf.lval[1] = ++create_verf;
1497 error = nfsrpc_create(dvp, cnp->cn_nameptr, cnp->cn_namelen,
1498 vap, cverf, fmode, cnp->cn_cred, cnp->cn_thread, &dnfsva, &nfsva,
1499 &nfhp, &attrflag, &dattrflag, NULL);
1502 (void) nfsrpc_lookup(dvp, cnp->cn_nameptr,
1503 cnp->cn_namelen, cnp->cn_cred, cnp->cn_thread,
1504 &dnfsva, &nfsva, &nfhp, &attrflag, &dattrflag,
1507 error = nfscl_nget(dvp->v_mount, dvp, nfhp, cnp,
1508 cnp->cn_thread, &np, NULL);
1511 (void) nfscl_loadattrcache(&dvp, &dnfsva, NULL, NULL, 0, 1);
1515 error = nfscl_loadattrcache(&newvp, &nfsva, NULL, NULL,
1519 if (newvp != NULL) {
1523 if (NFS_ISV34(dvp) && (fmode & O_EXCL) &&
1524 error == NFSERR_NOTSUPP) {
1528 } else if (NFS_ISV34(dvp) && (fmode & O_EXCL)) {
1529 if (nfscl_checksattr(vap, &nfsva)) {
1530 error = nfsrpc_setattr(newvp, vap, NULL, cnp->cn_cred,
1531 cnp->cn_thread, &nfsva, &attrflag, NULL);
1532 if (error && (vap->va_uid != (uid_t)VNOVAL ||
1533 vap->va_gid != (gid_t)VNOVAL)) {
1534 /* try again without setting uid/gid */
1535 vap->va_uid = (uid_t)VNOVAL;
1536 vap->va_gid = (uid_t)VNOVAL;
1537 error = nfsrpc_setattr(newvp, vap, NULL,
1538 cnp->cn_cred, cnp->cn_thread, &nfsva,
1542 (void) nfscl_loadattrcache(&newvp, &nfsva, NULL,
1547 if (cnp->cn_flags & MAKEENTRY)
1548 cache_enter(dvp, newvp, cnp);
1550 } else if (NFS_ISV4(dvp)) {
1551 error = nfscl_maperr(cnp->cn_thread, error, vap->va_uid,
1554 mtx_lock(&dnp->n_mtx);
1555 dnp->n_flag |= NMODIFIED;
1557 dnp->n_attrstamp = 0;
1558 mtx_unlock(&dnp->n_mtx);
1563 * nfs file remove call
1564 * To try and make nfs semantics closer to ufs semantics, a file that has
1565 * other processes using the vnode is renamed instead of removed and then
1566 * removed later on the last close.
1567 * - If v_usecount > 1
1568 * If a rename is not already in the works
1569 * call nfs_sillyrename() to set it up
1574 nfs_remove(struct vop_remove_args *ap)
1576 struct vnode *vp = ap->a_vp;
1577 struct vnode *dvp = ap->a_dvp;
1578 struct componentname *cnp = ap->a_cnp;
1579 struct nfsnode *np = VTONFS(vp);
1583 KASSERT((cnp->cn_flags & HASBUF) != 0, ("nfs_remove: no name"));
1584 KASSERT(vrefcnt(vp) > 0, ("nfs_remove: bad v_usecount"));
1585 if (vp->v_type == VDIR)
1587 else if (vrefcnt(vp) == 1 || (np->n_sillyrename &&
1588 VOP_GETATTR(vp, &vattr, cnp->cn_cred) == 0 &&
1589 vattr.va_nlink > 1)) {
1591 * Purge the name cache so that the chance of a lookup for
1592 * the name succeeding while the remove is in progress is
1593 * minimized. Without node locking it can still happen, such
1594 * that an I/O op returns ESTALE, but since you get this if
1595 * another host removes the file..
1599 * throw away biocache buffers, mainly to avoid
1600 * unnecessary delayed writes later.
1602 error = ncl_vinvalbuf(vp, 0, cnp->cn_thread, 1);
1604 if (error != EINTR && error != EIO)
1605 error = nfs_removerpc(dvp, vp, cnp->cn_nameptr,
1606 cnp->cn_namelen, cnp->cn_cred, cnp->cn_thread);
1608 * Kludge City: If the first reply to the remove rpc is lost..
1609 * the reply to the retransmitted request will be ENOENT
1610 * since the file was in fact removed
1611 * Therefore, we cheat and return success.
1613 if (error == ENOENT)
1615 } else if (!np->n_sillyrename)
1616 error = nfs_sillyrename(dvp, vp, cnp);
1617 np->n_attrstamp = 0;
1622 * nfs file remove rpc called from nfs_inactive
1625 ncl_removeit(struct sillyrename *sp, struct vnode *vp)
1628 * Make sure that the directory vnode is still valid.
1629 * XXX we should lock sp->s_dvp here.
1631 if (sp->s_dvp->v_type == VBAD)
1633 return (nfs_removerpc(sp->s_dvp, vp, sp->s_name, sp->s_namlen,
1638 * Nfs remove rpc, called from nfs_remove() and ncl_removeit().
1641 nfs_removerpc(struct vnode *dvp, struct vnode *vp, char *name,
1642 int namelen, struct ucred *cred, struct thread *td)
1644 struct nfsvattr dnfsva;
1645 struct nfsnode *dnp = VTONFS(dvp);
1646 int error = 0, dattrflag;
1648 mtx_lock(&dnp->n_mtx);
1649 dnp->n_flag |= NREMOVEINPROG;
1650 mtx_unlock(&dnp->n_mtx);
1651 error = nfsrpc_remove(dvp, name, namelen, vp, cred, td, &dnfsva,
1653 mtx_lock(&dnp->n_mtx);
1654 if ((dnp->n_flag & NREMOVEWANT)) {
1655 dnp->n_flag &= ~(NREMOVEWANT | NREMOVEINPROG);
1656 mtx_unlock(&dnp->n_mtx);
1657 wakeup((caddr_t)dnp);
1659 dnp->n_flag &= ~NREMOVEINPROG;
1660 mtx_unlock(&dnp->n_mtx);
1663 (void) nfscl_loadattrcache(&dvp, &dnfsva, NULL, NULL, 0, 1);
1664 mtx_lock(&dnp->n_mtx);
1665 dnp->n_flag |= NMODIFIED;
1667 dnp->n_attrstamp = 0;
1668 mtx_unlock(&dnp->n_mtx);
1669 if (error && NFS_ISV4(dvp))
1670 error = nfscl_maperr(td, error, (uid_t)0, (gid_t)0);
1675 * nfs file rename call
1678 nfs_rename(struct vop_rename_args *ap)
1680 struct vnode *fvp = ap->a_fvp;
1681 struct vnode *tvp = ap->a_tvp;
1682 struct vnode *fdvp = ap->a_fdvp;
1683 struct vnode *tdvp = ap->a_tdvp;
1684 struct componentname *tcnp = ap->a_tcnp;
1685 struct componentname *fcnp = ap->a_fcnp;
1686 struct nfsnode *fnp = VTONFS(ap->a_fvp);
1687 struct nfsnode *tdnp = VTONFS(ap->a_tdvp);
1688 struct nfsv4node *newv4 = NULL;
1691 KASSERT((tcnp->cn_flags & HASBUF) != 0 &&
1692 (fcnp->cn_flags & HASBUF) != 0, ("nfs_rename: no name"));
1693 /* Check for cross-device rename */
1694 if ((fvp->v_mount != tdvp->v_mount) ||
1695 (tvp && (fvp->v_mount != tvp->v_mount))) {
1701 ncl_printf("nfs_rename: fvp == tvp (can't happen)\n");
1705 if ((error = vn_lock(fvp, LK_EXCLUSIVE)))
1709 * We have to flush B_DELWRI data prior to renaming
1710 * the file. If we don't, the delayed-write buffers
1711 * can be flushed out later after the file has gone stale
1712 * under NFSV3. NFSV2 does not have this problem because
1713 * ( as far as I can tell ) it flushes dirty buffers more
1716 * Skip the rename operation if the fsync fails, this can happen
1717 * due to the server's volume being full, when we pushed out data
1718 * that was written back to our cache earlier. Not checking for
1719 * this condition can result in potential (silent) data loss.
1721 error = VOP_FSYNC(fvp, MNT_WAIT, fcnp->cn_thread);
1724 error = VOP_FSYNC(tvp, MNT_WAIT, tcnp->cn_thread);
1729 * If the tvp exists and is in use, sillyrename it before doing the
1730 * rename of the new file over it.
1731 * XXX Can't sillyrename a directory.
1733 if (tvp && vrefcnt(tvp) > 1 && !VTONFS(tvp)->n_sillyrename &&
1734 tvp->v_type != VDIR && !nfs_sillyrename(tdvp, tvp, tcnp)) {
1739 error = nfs_renamerpc(fdvp, fvp, fcnp->cn_nameptr, fcnp->cn_namelen,
1740 tdvp, tvp, tcnp->cn_nameptr, tcnp->cn_namelen, tcnp->cn_cred,
1745 * For NFSv4, check to see if it is the same name and
1746 * replace the name, if it is different.
1748 MALLOC(newv4, struct nfsv4node *,
1749 sizeof (struct nfsv4node) +
1750 tdnp->n_fhp->nfh_len + tcnp->cn_namelen - 1,
1751 M_NFSV4NODE, M_WAITOK);
1752 mtx_lock(&tdnp->n_mtx);
1753 mtx_lock(&fnp->n_mtx);
1754 if (fnp->n_v4 != NULL && fvp->v_type == VREG &&
1755 (fnp->n_v4->n4_namelen != tcnp->cn_namelen ||
1756 NFSBCMP(tcnp->cn_nameptr, NFS4NODENAME(fnp->n_v4),
1757 tcnp->cn_namelen) ||
1758 tdnp->n_fhp->nfh_len != fnp->n_v4->n4_fhlen ||
1759 NFSBCMP(tdnp->n_fhp->nfh_fh, fnp->n_v4->n4_data,
1760 tdnp->n_fhp->nfh_len))) {
1762 { char nnn[100]; int nnnl;
1763 nnnl = (tcnp->cn_namelen < 100) ? tcnp->cn_namelen : 99;
1764 bcopy(tcnp->cn_nameptr, nnn, nnnl);
1766 printf("ren replace=%s\n",nnn);
1769 FREE((caddr_t)fnp->n_v4, M_NFSV4NODE);
1772 fnp->n_v4->n4_fhlen = tdnp->n_fhp->nfh_len;
1773 fnp->n_v4->n4_namelen = tcnp->cn_namelen;
1774 NFSBCOPY(tdnp->n_fhp->nfh_fh, fnp->n_v4->n4_data,
1775 tdnp->n_fhp->nfh_len);
1776 NFSBCOPY(tcnp->cn_nameptr,
1777 NFS4NODENAME(fnp->n_v4), tcnp->cn_namelen);
1779 mtx_unlock(&tdnp->n_mtx);
1780 mtx_unlock(&fnp->n_mtx);
1782 FREE((caddr_t)newv4, M_NFSV4NODE);
1785 if (fvp->v_type == VDIR) {
1786 if (tvp != NULL && tvp->v_type == VDIR)
1801 * Kludge: Map ENOENT => 0 assuming that it is a reply to a retry.
1803 if (error == ENOENT)
1809 * nfs file rename rpc called from nfs_remove() above
1812 nfs_renameit(struct vnode *sdvp, struct vnode *svp, struct componentname *scnp,
1813 struct sillyrename *sp)
1816 return (nfs_renamerpc(sdvp, svp, scnp->cn_nameptr, scnp->cn_namelen,
1817 sdvp, NULL, sp->s_name, sp->s_namlen, scnp->cn_cred,
1822 * Do an nfs rename rpc. Called from nfs_rename() and nfs_renameit().
1825 nfs_renamerpc(struct vnode *fdvp, struct vnode *fvp, char *fnameptr,
1826 int fnamelen, struct vnode *tdvp, struct vnode *tvp, char *tnameptr,
1827 int tnamelen, struct ucred *cred, struct thread *td)
1829 struct nfsvattr fnfsva, tnfsva;
1830 struct nfsnode *fdnp = VTONFS(fdvp);
1831 struct nfsnode *tdnp = VTONFS(tdvp);
1832 int error = 0, fattrflag, tattrflag;
1834 error = nfsrpc_rename(fdvp, fvp, fnameptr, fnamelen, tdvp, tvp,
1835 tnameptr, tnamelen, cred, td, &fnfsva, &tnfsva, &fattrflag,
1836 &tattrflag, NULL, NULL);
1837 mtx_lock(&fdnp->n_mtx);
1838 fdnp->n_flag |= NMODIFIED;
1839 mtx_unlock(&fdnp->n_mtx);
1840 mtx_lock(&tdnp->n_mtx);
1841 tdnp->n_flag |= NMODIFIED;
1842 mtx_unlock(&tdnp->n_mtx);
1844 (void) nfscl_loadattrcache(&fdvp, &fnfsva, NULL, NULL, 0, 1);
1846 fdnp->n_attrstamp = 0;
1848 (void) nfscl_loadattrcache(&tdvp, &tnfsva, NULL, NULL, 0, 1);
1850 tdnp->n_attrstamp = 0;
1851 if (error && NFS_ISV4(fdvp))
1852 error = nfscl_maperr(td, error, (uid_t)0, (gid_t)0);
1857 * nfs hard link create call
1860 nfs_link(struct vop_link_args *ap)
1862 struct vnode *vp = ap->a_vp;
1863 struct vnode *tdvp = ap->a_tdvp;
1864 struct componentname *cnp = ap->a_cnp;
1865 struct nfsnode *tdnp;
1866 struct nfsvattr nfsva, dnfsva;
1867 int error = 0, attrflag, dattrflag;
1869 if (vp->v_mount != tdvp->v_mount) {
1874 * Push all writes to the server, so that the attribute cache
1875 * doesn't get "out of sync" with the server.
1876 * XXX There should be a better way!
1878 VOP_FSYNC(vp, MNT_WAIT, cnp->cn_thread);
1880 error = nfsrpc_link(tdvp, vp, cnp->cn_nameptr, cnp->cn_namelen,
1881 cnp->cn_cred, cnp->cn_thread, &dnfsva, &nfsva, &attrflag,
1883 tdnp = VTONFS(tdvp);
1884 mtx_lock(&tdnp->n_mtx);
1885 tdnp->n_flag |= NMODIFIED;
1886 mtx_unlock(&tdnp->n_mtx);
1888 (void) nfscl_loadattrcache(&vp, &nfsva, NULL, NULL, 0, 1);
1890 VTONFS(vp)->n_attrstamp = 0;
1892 (void) nfscl_loadattrcache(&tdvp, &dnfsva, NULL, NULL, 0, 1);
1894 tdnp->n_attrstamp = 0;
1896 * If negative lookup caching is enabled, I might as well
1897 * add an entry for this node. Not necessary for correctness,
1898 * but if negative caching is enabled, then the system
1899 * must care about lookup caching hit rate, so...
1901 if (VFSTONFS(vp->v_mount)->nm_negnametimeo != 0 &&
1902 (cnp->cn_flags & MAKEENTRY))
1903 cache_enter(tdvp, vp, cnp);
1904 if (error && NFS_ISV4(vp))
1905 error = nfscl_maperr(cnp->cn_thread, error, (uid_t)0,
1911 * nfs symbolic link create call
1914 nfs_symlink(struct vop_symlink_args *ap)
1916 struct vnode *dvp = ap->a_dvp;
1917 struct vattr *vap = ap->a_vap;
1918 struct componentname *cnp = ap->a_cnp;
1919 struct nfsvattr nfsva, dnfsva;
1921 struct nfsnode *np = NULL, *dnp;
1922 struct vnode *newvp = NULL;
1923 int error = 0, attrflag, dattrflag, ret;
1925 vap->va_type = VLNK;
1926 error = nfsrpc_symlink(dvp, cnp->cn_nameptr, cnp->cn_namelen,
1927 ap->a_target, vap, cnp->cn_cred, cnp->cn_thread, &dnfsva,
1928 &nfsva, &nfhp, &attrflag, &dattrflag, NULL);
1930 ret = nfscl_nget(dvp->v_mount, dvp, nfhp, cnp, cnp->cn_thread,
1937 if (newvp != NULL) {
1939 (void) nfscl_loadattrcache(&newvp, &nfsva, NULL, NULL,
1941 } else if (!error) {
1943 * If we do not have an error and we could not extract the
1944 * newvp from the response due to the request being NFSv2, we
1945 * have to do a lookup in order to obtain a newvp to return.
1947 error = nfs_lookitup(dvp, cnp->cn_nameptr, cnp->cn_namelen,
1948 cnp->cn_cred, cnp->cn_thread, &np);
1956 error = nfscl_maperr(cnp->cn_thread, error,
1957 vap->va_uid, vap->va_gid);
1960 * If negative lookup caching is enabled, I might as well
1961 * add an entry for this node. Not necessary for correctness,
1962 * but if negative caching is enabled, then the system
1963 * must care about lookup caching hit rate, so...
1965 if (VFSTONFS(dvp->v_mount)->nm_negnametimeo != 0 &&
1966 (cnp->cn_flags & MAKEENTRY))
1967 cache_enter(dvp, newvp, cnp);
1972 mtx_lock(&dnp->n_mtx);
1973 dnp->n_flag |= NMODIFIED;
1974 mtx_unlock(&dnp->n_mtx);
1976 (void) nfscl_loadattrcache(&dvp, &dnfsva, NULL, NULL, 0, 1);
1978 dnp->n_attrstamp = 0;
1986 nfs_mkdir(struct vop_mkdir_args *ap)
1988 struct vnode *dvp = ap->a_dvp;
1989 struct vattr *vap = ap->a_vap;
1990 struct componentname *cnp = ap->a_cnp;
1991 struct nfsnode *np = NULL, *dnp;
1992 struct vnode *newvp = NULL;
1995 struct nfsvattr nfsva, dnfsva;
1996 int error = 0, attrflag, dattrflag, ret;
1998 if ((error = VOP_GETATTR(dvp, &vattr, cnp->cn_cred)))
2000 vap->va_type = VDIR;
2001 error = nfsrpc_mkdir(dvp, cnp->cn_nameptr, cnp->cn_namelen,
2002 vap, cnp->cn_cred, cnp->cn_thread, &dnfsva, &nfsva, &nfhp,
2003 &attrflag, &dattrflag, NULL);
2005 mtx_lock(&dnp->n_mtx);
2006 dnp->n_flag |= NMODIFIED;
2007 mtx_unlock(&dnp->n_mtx);
2009 (void) nfscl_loadattrcache(&dvp, &dnfsva, NULL, NULL, 0, 1);
2011 dnp->n_attrstamp = 0;
2013 ret = nfscl_nget(dvp->v_mount, dvp, nfhp, cnp, cnp->cn_thread,
2018 (void) nfscl_loadattrcache(&newvp, &nfsva, NULL,
2023 if (!error && newvp == NULL) {
2024 error = nfs_lookitup(dvp, cnp->cn_nameptr, cnp->cn_namelen,
2025 cnp->cn_cred, cnp->cn_thread, &np);
2028 if (newvp->v_type != VDIR)
2036 error = nfscl_maperr(cnp->cn_thread, error,
2037 vap->va_uid, vap->va_gid);
2040 * If negative lookup caching is enabled, I might as well
2041 * add an entry for this node. Not necessary for correctness,
2042 * but if negative caching is enabled, then the system
2043 * must care about lookup caching hit rate, so...
2045 if (VFSTONFS(dvp->v_mount)->nm_negnametimeo != 0 &&
2046 (cnp->cn_flags & MAKEENTRY))
2047 cache_enter(dvp, newvp, cnp);
2054 * nfs remove directory call
2057 nfs_rmdir(struct vop_rmdir_args *ap)
2059 struct vnode *vp = ap->a_vp;
2060 struct vnode *dvp = ap->a_dvp;
2061 struct componentname *cnp = ap->a_cnp;
2062 struct nfsnode *dnp;
2063 struct nfsvattr dnfsva;
2064 int error, dattrflag;
2068 error = nfsrpc_rmdir(dvp, cnp->cn_nameptr, cnp->cn_namelen,
2069 cnp->cn_cred, cnp->cn_thread, &dnfsva, &dattrflag, NULL);
2071 mtx_lock(&dnp->n_mtx);
2072 dnp->n_flag |= NMODIFIED;
2073 mtx_unlock(&dnp->n_mtx);
2075 (void) nfscl_loadattrcache(&dvp, &dnfsva, NULL, NULL, 0, 1);
2077 dnp->n_attrstamp = 0;
2081 if (error && NFS_ISV4(dvp))
2082 error = nfscl_maperr(cnp->cn_thread, error, (uid_t)0,
2085 * Kludge: Map ENOENT => 0 assuming that you have a reply to a retry.
2087 if (error == ENOENT)
2096 nfs_readdir(struct vop_readdir_args *ap)
2098 struct vnode *vp = ap->a_vp;
2099 struct nfsnode *np = VTONFS(vp);
2100 struct uio *uio = ap->a_uio;
2101 int tresid, error = 0;
2104 if (vp->v_type != VDIR)
2108 * First, check for hit on the EOF offset cache
2110 if (np->n_direofoffset > 0 && uio->uio_offset >= np->n_direofoffset &&
2111 (np->n_flag & NMODIFIED) == 0) {
2112 if (VOP_GETATTR(vp, &vattr, ap->a_cred) == 0) {
2113 mtx_lock(&np->n_mtx);
2114 if ((NFS_ISV4(vp) && np->n_change == vattr.va_filerev) ||
2115 !NFS_TIMESPEC_COMPARE(&np->n_mtime, &vattr.va_mtime)) {
2116 mtx_unlock(&np->n_mtx);
2117 NFSINCRGLOBAL(newnfsstats.direofcache_hits);
2120 mtx_unlock(&np->n_mtx);
2125 * Call ncl_bioread() to do the real work.
2127 tresid = uio->uio_resid;
2128 error = ncl_bioread(vp, uio, 0, ap->a_cred);
2130 if (!error && uio->uio_resid == tresid)
2131 NFSINCRGLOBAL(newnfsstats.direofcache_misses);
2137 * Called from below the buffer cache by ncl_doio().
2140 ncl_readdirrpc(struct vnode *vp, struct uio *uiop, struct ucred *cred,
2143 struct nfsvattr nfsva;
2144 nfsuint64 *cookiep, cookie;
2145 struct nfsnode *dnp = VTONFS(vp);
2146 struct nfsmount *nmp = VFSTONFS(vp->v_mount);
2147 int error = 0, eof, attrflag;
2149 KASSERT(uiop->uio_iovcnt == 1 &&
2150 (uiop->uio_offset & (DIRBLKSIZ - 1)) == 0 &&
2151 (uiop->uio_resid & (DIRBLKSIZ - 1)) == 0,
2152 ("nfs readdirrpc bad uio"));
2155 * If there is no cookie, assume directory was stale.
2157 ncl_dircookie_lock(dnp);
2158 cookiep = ncl_getcookie(dnp, uiop->uio_offset, 0);
2161 ncl_dircookie_unlock(dnp);
2163 ncl_dircookie_unlock(dnp);
2164 return (NFSERR_BAD_COOKIE);
2167 if (NFSHASNFSV3(nmp) && !NFSHASGOTFSINFO(nmp))
2168 (void)ncl_fsinfo(nmp, vp, cred, td);
2170 error = nfsrpc_readdir(vp, uiop, &cookie, cred, td, &nfsva,
2171 &attrflag, &eof, NULL);
2173 (void) nfscl_loadattrcache(&vp, &nfsva, NULL, NULL, 0, 1);
2177 * We are now either at the end of the directory or have filled
2181 dnp->n_direofoffset = uiop->uio_offset;
2183 if (uiop->uio_resid > 0)
2184 ncl_printf("EEK! readdirrpc resid > 0\n");
2185 ncl_dircookie_lock(dnp);
2186 cookiep = ncl_getcookie(dnp, uiop->uio_offset, 1);
2188 ncl_dircookie_unlock(dnp);
2190 } else if (NFS_ISV4(vp)) {
2191 error = nfscl_maperr(td, error, (uid_t)0, (gid_t)0);
2197 * NFS V3 readdir plus RPC. Used in place of ncl_readdirrpc().
2200 ncl_readdirplusrpc(struct vnode *vp, struct uio *uiop, struct ucred *cred,
2203 struct nfsvattr nfsva;
2204 nfsuint64 *cookiep, cookie;
2205 struct nfsnode *dnp = VTONFS(vp);
2206 struct nfsmount *nmp = VFSTONFS(vp->v_mount);
2207 int error = 0, attrflag, eof;
2209 KASSERT(uiop->uio_iovcnt == 1 &&
2210 (uiop->uio_offset & (DIRBLKSIZ - 1)) == 0 &&
2211 (uiop->uio_resid & (DIRBLKSIZ - 1)) == 0,
2212 ("nfs readdirplusrpc bad uio"));
2215 * If there is no cookie, assume directory was stale.
2217 ncl_dircookie_lock(dnp);
2218 cookiep = ncl_getcookie(dnp, uiop->uio_offset, 0);
2221 ncl_dircookie_unlock(dnp);
2223 ncl_dircookie_unlock(dnp);
2224 return (NFSERR_BAD_COOKIE);
2227 if (NFSHASNFSV3(nmp) && !NFSHASGOTFSINFO(nmp))
2228 (void)ncl_fsinfo(nmp, vp, cred, td);
2229 error = nfsrpc_readdirplus(vp, uiop, &cookie, cred, td, &nfsva,
2230 &attrflag, &eof, NULL);
2232 (void) nfscl_loadattrcache(&vp, &nfsva, NULL, NULL, 0, 1);
2236 * We are now either at end of the directory or have filled the
2240 dnp->n_direofoffset = uiop->uio_offset;
2242 if (uiop->uio_resid > 0)
2243 ncl_printf("EEK! readdirplusrpc resid > 0\n");
2244 ncl_dircookie_lock(dnp);
2245 cookiep = ncl_getcookie(dnp, uiop->uio_offset, 1);
2247 ncl_dircookie_unlock(dnp);
2249 } else if (NFS_ISV4(vp)) {
2250 error = nfscl_maperr(td, error, (uid_t)0, (gid_t)0);
2256 * Silly rename. To make the NFS filesystem that is stateless look a little
2257 * more like the "ufs" a remove of an active vnode is translated to a rename
2258 * to a funny looking filename that is removed by nfs_inactive on the
2259 * nfsnode. There is the potential for another process on a different client
2260 * to create the same funny name between the nfs_lookitup() fails and the
2261 * nfs_rename() completes, but...
2264 nfs_sillyrename(struct vnode *dvp, struct vnode *vp, struct componentname *cnp)
2266 struct sillyrename *sp;
2270 unsigned int lticks;
2274 KASSERT(vp->v_type != VDIR, ("nfs: sillyrename dir"));
2275 MALLOC(sp, struct sillyrename *, sizeof (struct sillyrename),
2276 M_NEWNFSREQ, M_WAITOK);
2277 sp->s_cred = crhold(cnp->cn_cred);
2282 * Fudge together a funny name.
2283 * Changing the format of the funny name to accomodate more
2284 * sillynames per directory.
2285 * The name is now changed to .nfs.<ticks>.<pid>.4, where ticks is
2286 * CPU ticks since boot.
2288 pid = cnp->cn_thread->td_proc->p_pid;
2289 lticks = (unsigned int)ticks;
2291 sp->s_namlen = sprintf(sp->s_name,
2292 ".nfs.%08x.%04x4.4", lticks,
2294 if (nfs_lookitup(dvp, sp->s_name, sp->s_namlen, sp->s_cred,
2295 cnp->cn_thread, NULL))
2299 error = nfs_renameit(dvp, vp, cnp, sp);
2302 error = nfs_lookitup(dvp, sp->s_name, sp->s_namlen, sp->s_cred,
2303 cnp->cn_thread, &np);
2304 np->n_sillyrename = sp;
2309 free((caddr_t)sp, M_NEWNFSREQ);
2314 * Look up a file name and optionally either update the file handle or
2315 * allocate an nfsnode, depending on the value of npp.
2316 * npp == NULL --> just do the lookup
2317 * *npp == NULL --> allocate a new nfsnode and make sure attributes are
2319 * *npp != NULL --> update the file handle in the vnode
2322 nfs_lookitup(struct vnode *dvp, char *name, int len, struct ucred *cred,
2323 struct thread *td, struct nfsnode **npp)
2325 struct vnode *newvp = NULL, *vp;
2326 struct nfsnode *np, *dnp = VTONFS(dvp);
2327 struct nfsfh *nfhp, *onfhp;
2328 struct nfsvattr nfsva, dnfsva;
2329 struct componentname cn;
2330 int error = 0, attrflag, dattrflag;
2333 error = nfsrpc_lookup(dvp, name, len, cred, td, &dnfsva, &nfsva,
2334 &nfhp, &attrflag, &dattrflag, NULL);
2336 (void) nfscl_loadattrcache(&dvp, &dnfsva, NULL, NULL, 0, 1);
2337 if (npp && !error) {
2342 * For NFSv4, check to see if it is the same name and
2343 * replace the name, if it is different.
2345 if (np->n_v4 != NULL && nfsva.na_type == VREG &&
2346 (np->n_v4->n4_namelen != len ||
2347 NFSBCMP(name, NFS4NODENAME(np->n_v4), len) ||
2348 dnp->n_fhp->nfh_len != np->n_v4->n4_fhlen ||
2349 NFSBCMP(dnp->n_fhp->nfh_fh, np->n_v4->n4_data,
2350 dnp->n_fhp->nfh_len))) {
2352 { char nnn[100]; int nnnl;
2353 nnnl = (len < 100) ? len : 99;
2354 bcopy(name, nnn, nnnl);
2356 printf("replace=%s\n",nnn);
2359 FREE((caddr_t)np->n_v4, M_NFSV4NODE);
2360 MALLOC(np->n_v4, struct nfsv4node *,
2361 sizeof (struct nfsv4node) +
2362 dnp->n_fhp->nfh_len + len - 1,
2363 M_NFSV4NODE, M_WAITOK);
2364 np->n_v4->n4_fhlen = dnp->n_fhp->nfh_len;
2365 np->n_v4->n4_namelen = len;
2366 NFSBCOPY(dnp->n_fhp->nfh_fh, np->n_v4->n4_data,
2367 dnp->n_fhp->nfh_len);
2368 NFSBCOPY(name, NFS4NODENAME(np->n_v4), len);
2370 hash = fnv_32_buf(nfhp->nfh_fh, nfhp->nfh_len,
2374 * Rehash node for new file handle.
2376 vfs_hash_rehash(vp, hash);
2379 FREE((caddr_t)onfhp, M_NFSFH);
2381 } else if (NFS_CMPFH(dnp, nfhp->nfh_fh, nfhp->nfh_len)) {
2382 FREE((caddr_t)nfhp, M_NFSFH);
2386 cn.cn_nameptr = name;
2387 cn.cn_namelen = len;
2388 error = nfscl_nget(dvp->v_mount, dvp, nfhp, &cn, td,
2394 if (!attrflag && *npp == NULL) {
2399 (void) nfscl_loadattrcache(&newvp, &nfsva, NULL, NULL,
2402 if (npp && *npp == NULL) {
2413 if (error && NFS_ISV4(dvp))
2414 error = nfscl_maperr(td, error, (uid_t)0, (gid_t)0);
2419 * Nfs Version 3 and 4 commit rpc
2422 ncl_commit(struct vnode *vp, u_quad_t offset, int cnt, struct ucred *cred,
2425 struct nfsvattr nfsva;
2426 struct nfsmount *nmp = VFSTONFS(vp->v_mount);
2427 int error, attrflag;
2428 u_char verf[NFSX_VERF];
2430 mtx_lock(&nmp->nm_mtx);
2431 if ((nmp->nm_state & NFSSTA_HASWRITEVERF) == 0) {
2432 mtx_unlock(&nmp->nm_mtx);
2435 mtx_unlock(&nmp->nm_mtx);
2436 error = nfsrpc_commit(vp, offset, cnt, cred, td, verf, &nfsva,
2439 if (NFSBCMP((caddr_t)nmp->nm_verf, verf, NFSX_VERF)) {
2440 NFSBCOPY(verf, (caddr_t)nmp->nm_verf, NFSX_VERF);
2441 error = NFSERR_STALEWRITEVERF;
2443 if (!error && attrflag)
2444 (void) nfscl_loadattrcache(&vp, &nfsva, NULL, NULL,
2446 } else if (NFS_ISV4(vp)) {
2447 error = nfscl_maperr(td, error, (uid_t)0, (gid_t)0);
2454 * For async requests when nfsiod(s) are running, queue the request by
2455 * calling ncl_asyncio(), otherwise just all ncl_doio() to do the
2459 nfs_strategy(struct vop_strategy_args *ap)
2461 struct buf *bp = ap->a_bp;
2464 KASSERT(!(bp->b_flags & B_DONE),
2465 ("nfs_strategy: buffer %p unexpectedly marked B_DONE", bp));
2466 BUF_ASSERT_HELD(bp);
2468 if (bp->b_iocmd == BIO_READ)
2474 * If the op is asynchronous and an i/o daemon is waiting
2475 * queue the request, wake it up and wait for completion
2476 * otherwise just do it ourselves.
2478 if ((bp->b_flags & B_ASYNC) == 0 ||
2479 ncl_asyncio(VFSTONFS(ap->a_vp->v_mount), bp, NOCRED, curthread))
2480 (void) ncl_doio(ap->a_vp, bp, cr, curthread, 1);
2485 * fsync vnode op. Just call ncl_flush() with commit == 1.
2489 nfs_fsync(struct vop_fsync_args *ap)
2491 return (ncl_flush(ap->a_vp, ap->a_waitfor, NULL, ap->a_td, 1, 0));
2495 * Flush all the blocks associated with a vnode.
2496 * Walk through the buffer pool and push any dirty pages
2497 * associated with the vnode.
2498 * If the called_from_renewthread argument is TRUE, it has been called
2499 * from the NFSv4 renew thread and, as such, cannot block indefinitely
2500 * waiting for a buffer write to complete.
2503 ncl_flush(struct vnode *vp, int waitfor, struct ucred *cred, struct thread *td,
2504 int commit, int called_from_renewthread)
2506 struct nfsnode *np = VTONFS(vp);
2510 struct nfsmount *nmp = VFSTONFS(vp->v_mount);
2511 int error = 0, slptimeo = 0, slpflag = 0, retv, bvecpos;
2512 int passone = 1, trycnt = 0;
2513 u_quad_t off, endoff, toff;
2514 struct ucred* wcred = NULL;
2515 struct buf **bvec = NULL;
2517 #ifndef NFS_COMMITBVECSIZ
2518 #define NFS_COMMITBVECSIZ 20
2520 struct buf *bvec_on_stack[NFS_COMMITBVECSIZ];
2521 int bvecsize = 0, bveccount;
2523 if (called_from_renewthread != 0)
2525 if (nmp->nm_flag & NFSMNT_INT)
2526 slpflag = NFS_PCATCH;
2531 * A b_flags == (B_DELWRI | B_NEEDCOMMIT) block has been written to the
2532 * server, but has not been committed to stable storage on the server
2533 * yet. On the first pass, the byte range is worked out and the commit
2534 * rpc is done. On the second pass, ncl_writebp() is called to do the
2541 if (NFS_ISV34(vp) && commit) {
2542 if (bvec != NULL && bvec != bvec_on_stack)
2545 * Count up how many buffers waiting for a commit.
2549 TAILQ_FOREACH_SAFE(bp, &bo->bo_dirty.bv_hd, b_bobufs, nbp) {
2550 if (!BUF_ISLOCKED(bp) &&
2551 (bp->b_flags & (B_DELWRI | B_NEEDCOMMIT))
2552 == (B_DELWRI | B_NEEDCOMMIT))
2556 * Allocate space to remember the list of bufs to commit. It is
2557 * important to use M_NOWAIT here to avoid a race with nfs_write.
2558 * If we can't get memory (for whatever reason), we will end up
2559 * committing the buffers one-by-one in the loop below.
2561 if (bveccount > NFS_COMMITBVECSIZ) {
2563 * Release the vnode interlock to avoid a lock
2567 bvec = (struct buf **)
2568 malloc(bveccount * sizeof(struct buf *),
2572 bvec = bvec_on_stack;
2573 bvecsize = NFS_COMMITBVECSIZ;
2575 bvecsize = bveccount;
2577 bvec = bvec_on_stack;
2578 bvecsize = NFS_COMMITBVECSIZ;
2580 TAILQ_FOREACH_SAFE(bp, &bo->bo_dirty.bv_hd, b_bobufs, nbp) {
2581 if (bvecpos >= bvecsize)
2583 if (BUF_LOCK(bp, LK_EXCLUSIVE | LK_NOWAIT, NULL)) {
2584 nbp = TAILQ_NEXT(bp, b_bobufs);
2587 if ((bp->b_flags & (B_DELWRI | B_NEEDCOMMIT)) !=
2588 (B_DELWRI | B_NEEDCOMMIT)) {
2590 nbp = TAILQ_NEXT(bp, b_bobufs);
2596 * Work out if all buffers are using the same cred
2597 * so we can deal with them all with one commit.
2599 * NOTE: we are not clearing B_DONE here, so we have
2600 * to do it later on in this routine if we intend to
2601 * initiate I/O on the bp.
2603 * Note: to avoid loopback deadlocks, we do not
2604 * assign b_runningbufspace.
2607 wcred = bp->b_wcred;
2608 else if (wcred != bp->b_wcred)
2610 vfs_busy_pages(bp, 1);
2614 * bp is protected by being locked, but nbp is not
2615 * and vfs_busy_pages() may sleep. We have to
2618 nbp = TAILQ_NEXT(bp, b_bobufs);
2621 * A list of these buffers is kept so that the
2622 * second loop knows which buffers have actually
2623 * been committed. This is necessary, since there
2624 * may be a race between the commit rpc and new
2625 * uncommitted writes on the file.
2627 bvec[bvecpos++] = bp;
2628 toff = ((u_quad_t)bp->b_blkno) * DEV_BSIZE +
2632 toff += (u_quad_t)(bp->b_dirtyend - bp->b_dirtyoff);
2640 * Commit data on the server, as required.
2641 * If all bufs are using the same wcred, then use that with
2642 * one call for all of them, otherwise commit each one
2645 if (wcred != NOCRED)
2646 retv = ncl_commit(vp, off, (int)(endoff - off),
2650 for (i = 0; i < bvecpos; i++) {
2653 off = ((u_quad_t)bp->b_blkno) * DEV_BSIZE +
2655 size = (u_quad_t)(bp->b_dirtyend
2657 retv = ncl_commit(vp, off, (int)size,
2663 if (retv == NFSERR_STALEWRITEVERF)
2664 ncl_clearcommit(vp->v_mount);
2667 * Now, either mark the blocks I/O done or mark the
2668 * blocks dirty, depending on whether the commit
2671 for (i = 0; i < bvecpos; i++) {
2673 bp->b_flags &= ~(B_NEEDCOMMIT | B_CLUSTEROK);
2676 * Error, leave B_DELWRI intact
2678 vfs_unbusy_pages(bp);
2682 * Success, remove B_DELWRI ( bundirty() ).
2684 * b_dirtyoff/b_dirtyend seem to be NFS
2685 * specific. We should probably move that
2686 * into bundirty(). XXX
2689 bp->b_flags |= B_ASYNC;
2691 bp->b_flags &= ~B_DONE;
2692 bp->b_ioflags &= ~BIO_ERROR;
2693 bp->b_dirtyoff = bp->b_dirtyend = 0;
2700 * Start/do any write(s) that are required.
2704 TAILQ_FOREACH_SAFE(bp, &bo->bo_dirty.bv_hd, b_bobufs, nbp) {
2705 if (BUF_LOCK(bp, LK_EXCLUSIVE | LK_NOWAIT, NULL)) {
2706 if (waitfor != MNT_WAIT || passone)
2709 error = BUF_TIMELOCK(bp,
2710 LK_EXCLUSIVE | LK_SLEEPFAIL | LK_INTERLOCK,
2711 BO_MTX(bo), "nfsfsync", slpflag, slptimeo);
2716 if (error == ENOLCK) {
2720 if (called_from_renewthread != 0) {
2722 * Return EIO so the flush will be retried
2728 if (newnfs_sigintr(nmp, td)) {
2732 if (slpflag & PCATCH) {
2738 if ((bp->b_flags & B_DELWRI) == 0)
2739 panic("nfs_fsync: not dirty");
2740 if ((passone || !commit) && (bp->b_flags & B_NEEDCOMMIT)) {
2746 if (passone || !commit)
2747 bp->b_flags |= B_ASYNC;
2749 bp->b_flags |= B_ASYNC;
2751 if (newnfs_sigintr(nmp, td)) {
2762 if (waitfor == MNT_WAIT) {
2763 while (bo->bo_numoutput) {
2764 error = bufobj_wwait(bo, slpflag, slptimeo);
2767 if (called_from_renewthread != 0) {
2769 * Return EIO so that the flush will be
2775 error = newnfs_sigintr(nmp, td);
2778 if (slpflag & PCATCH) {
2785 if (bo->bo_dirty.bv_cnt != 0 && commit) {
2790 * Wait for all the async IO requests to drain
2793 mtx_lock(&np->n_mtx);
2794 while (np->n_directio_asyncwr > 0) {
2795 np->n_flag |= NFSYNCWAIT;
2796 error = newnfs_msleep(td, &np->n_directio_asyncwr,
2797 &np->n_mtx, slpflag | (PRIBIO + 1),
2800 if (newnfs_sigintr(nmp, td)) {
2801 mtx_unlock(&np->n_mtx);
2807 mtx_unlock(&np->n_mtx);
2810 mtx_lock(&np->n_mtx);
2811 if (np->n_flag & NWRITEERR) {
2812 error = np->n_error;
2813 np->n_flag &= ~NWRITEERR;
2815 if (commit && bo->bo_dirty.bv_cnt == 0 &&
2816 bo->bo_numoutput == 0 && np->n_directio_asyncwr == 0)
2817 np->n_flag &= ~NMODIFIED;
2818 mtx_unlock(&np->n_mtx);
2820 if (bvec != NULL && bvec != bvec_on_stack)
2822 if (error == 0 && commit != 0 && waitfor == MNT_WAIT &&
2823 (bo->bo_dirty.bv_cnt != 0 || bo->bo_numoutput != 0 ||
2824 np->n_directio_asyncwr != 0) && trycnt++ < 5) {
2825 /* try, try again... */
2830 printf("try%d\n", trycnt);
2837 * NFS advisory byte-level locks.
2840 nfs_advlock(struct vop_advlock_args *ap)
2842 struct vnode *vp = ap->a_vp;
2844 struct nfsnode *np = VTONFS(ap->a_vp);
2845 struct proc *p = (struct proc *)ap->a_id;
2846 struct thread *td = curthread; /* XXX */
2848 int ret, error = EOPNOTSUPP;
2851 if (NFS_ISV4(vp) && (ap->a_flags & F_POSIX)) {
2853 vn_lock(vp, LK_EXCLUSIVE | LK_RETRY);
2854 if (vp->v_iflag & VI_DOOMED) {
2860 * If this is unlocking a write locked region, flush and
2861 * commit them before unlocking. This is required by
2862 * RFC3530 Sec. 9.3.2.
2864 if (ap->a_op == F_UNLCK &&
2865 nfscl_checkwritelocked(vp, ap->a_fl, cred, td))
2866 (void) ncl_flush(vp, MNT_WAIT, cred, td, 1, 0);
2869 * Loop around doing the lock op, while a blocking lock
2870 * must wait for the lock op to succeed.
2873 ret = nfsrpc_advlock(vp, np->n_size, ap->a_op,
2874 ap->a_fl, 0, cred, td);
2875 if (ret == NFSERR_DENIED && (ap->a_flags & F_WAIT) &&
2876 ap->a_op == F_SETLK) {
2878 error = nfs_catnap(PZERO | PCATCH, ret,
2882 vn_lock(vp, LK_EXCLUSIVE | LK_RETRY);
2883 if (vp->v_iflag & VI_DOOMED) {
2888 } while (ret == NFSERR_DENIED && (ap->a_flags & F_WAIT) &&
2889 ap->a_op == F_SETLK);
2890 if (ret == NFSERR_DENIED) {
2893 } else if (ret == EINVAL || ret == EBADF || ret == EINTR) {
2896 } else if (ret != 0) {
2902 * Now, if we just got a lock, invalidate data in the buffer
2903 * cache, as required, so that the coherency conforms with
2904 * RFC3530 Sec. 9.3.2.
2906 if (ap->a_op == F_SETLK) {
2907 if ((np->n_flag & NMODIFIED) == 0) {
2908 np->n_attrstamp = 0;
2909 ret = VOP_GETATTR(vp, &va, cred);
2911 if ((np->n_flag & NMODIFIED) || ret ||
2912 np->n_change != va.va_filerev) {
2913 (void) ncl_vinvalbuf(vp, V_SAVE, td, 1);
2914 np->n_attrstamp = 0;
2915 ret = VOP_GETATTR(vp, &va, cred);
2917 np->n_mtime = va.va_mtime;
2918 np->n_change = va.va_filerev;
2924 } else if (!NFS_ISV4(vp)) {
2925 error = vn_lock(vp, LK_SHARED);
2928 if ((VFSTONFS(vp->v_mount)->nm_flag & NFSMNT_NOLOCKD) != 0) {
2929 size = VTONFS(vp)->n_size;
2931 error = lf_advlock(ap, &(vp->v_lockf), size);
2933 if (nfs_advlock_p != NULL)
2934 error = nfs_advlock_p(ap);
2945 * NFS advisory byte-level locks.
2948 nfs_advlockasync(struct vop_advlockasync_args *ap)
2950 struct vnode *vp = ap->a_vp;
2955 return (EOPNOTSUPP);
2956 error = vn_lock(vp, LK_SHARED);
2959 if ((VFSTONFS(vp->v_mount)->nm_flag & NFSMNT_NOLOCKD) != 0) {
2960 size = VTONFS(vp)->n_size;
2962 error = lf_advlockasync(ap, &(vp->v_lockf), size);
2971 * Print out the contents of an nfsnode.
2974 nfs_print(struct vop_print_args *ap)
2976 struct vnode *vp = ap->a_vp;
2977 struct nfsnode *np = VTONFS(vp);
2979 ncl_printf("\tfileid %ld fsid 0x%x",
2980 np->n_vattr.na_fileid, np->n_vattr.na_fsid);
2981 if (vp->v_type == VFIFO)
2988 * This is the "real" nfs::bwrite(struct buf*).
2989 * We set B_CACHE if this is a VMIO buffer.
2992 ncl_writebp(struct buf *bp, int force __unused, struct thread *td)
2995 int oldflags = bp->b_flags;
3001 BUF_ASSERT_HELD(bp);
3003 if (bp->b_flags & B_INVAL) {
3008 bp->b_flags |= B_CACHE;
3011 * Undirty the bp. We will redirty it later if the I/O fails.
3016 bp->b_flags &= ~B_DONE;
3017 bp->b_ioflags &= ~BIO_ERROR;
3018 bp->b_iocmd = BIO_WRITE;
3020 bufobj_wref(bp->b_bufobj);
3021 curthread->td_ru.ru_oublock++;
3025 * Note: to avoid loopback deadlocks, we do not
3026 * assign b_runningbufspace.
3028 vfs_busy_pages(bp, 1);
3031 bp->b_iooffset = dbtob(bp->b_blkno);
3034 if( (oldflags & B_ASYNC) == 0) {
3035 int rtval = bufwait(bp);
3037 if (oldflags & B_DELWRI) {
3050 * nfs special file access vnode op.
3051 * Essentially just get vattr and then imitate iaccess() since the device is
3052 * local to the client.
3055 nfsspec_access(struct vop_access_args *ap)
3058 struct ucred *cred = ap->a_cred;
3059 struct vnode *vp = ap->a_vp;
3060 accmode_t accmode = ap->a_accmode;
3065 * Disallow write attempts on filesystems mounted read-only;
3066 * unless the file is a socket, fifo, or a block or character
3067 * device resident on the filesystem.
3069 if ((accmode & VWRITE) && (vp->v_mount->mnt_flag & MNT_RDONLY)) {
3070 switch (vp->v_type) {
3080 error = VOP_GETATTR(vp, vap, cred);
3083 error = vaccess(vp->v_type, vap->va_mode, vap->va_uid, vap->va_gid,
3084 accmode, cred, NULL);
3090 * Read wrapper for fifos.
3093 nfsfifo_read(struct vop_read_args *ap)
3095 struct nfsnode *np = VTONFS(ap->a_vp);
3101 mtx_lock(&np->n_mtx);
3103 getnanotime(&np->n_atim);
3104 mtx_unlock(&np->n_mtx);
3105 error = fifo_specops.vop_read(ap);
3110 * Write wrapper for fifos.
3113 nfsfifo_write(struct vop_write_args *ap)
3115 struct nfsnode *np = VTONFS(ap->a_vp);
3120 mtx_lock(&np->n_mtx);
3122 getnanotime(&np->n_mtim);
3123 mtx_unlock(&np->n_mtx);
3124 return(fifo_specops.vop_write(ap));
3128 * Close wrapper for fifos.
3130 * Update the times on the nfsnode then do fifo close.
3133 nfsfifo_close(struct vop_close_args *ap)
3135 struct vnode *vp = ap->a_vp;
3136 struct nfsnode *np = VTONFS(vp);
3140 mtx_lock(&np->n_mtx);
3141 if (np->n_flag & (NACC | NUPD)) {
3143 if (np->n_flag & NACC)
3145 if (np->n_flag & NUPD)
3148 if (vrefcnt(vp) == 1 &&
3149 (vp->v_mount->mnt_flag & MNT_RDONLY) == 0) {
3151 if (np->n_flag & NACC)
3152 vattr.va_atime = np->n_atim;
3153 if (np->n_flag & NUPD)
3154 vattr.va_mtime = np->n_mtim;
3155 mtx_unlock(&np->n_mtx);
3156 (void)VOP_SETATTR(vp, &vattr, ap->a_cred);
3160 mtx_unlock(&np->n_mtx);
3162 return (fifo_specops.vop_close(ap));
3166 * Just call ncl_writebp() with the force argument set to 1.
3168 * NOTE: B_DONE may or may not be set in a_bp on call.
3171 nfs_bwrite(struct buf *bp)
3174 return (ncl_writebp(bp, 1, curthread));
3177 struct buf_ops buf_ops_newnfs = {
3178 .bop_name = "buf_ops_nfs",
3179 .bop_write = nfs_bwrite,
3180 .bop_strategy = bufstrategy,
3181 .bop_sync = bufsync,
3182 .bop_bdflush = bufbdflush,
3186 * Cloned from vop_stdlock(), and then the ugly hack added.
3189 nfs_lock1(struct vop_lock1_args *ap)
3191 struct vnode *vp = ap->a_vp;
3195 * Since vfs_hash_get() calls vget() and it will no longer work
3196 * for FreeBSD8 with flags == 0, I can only think of this horrible
3197 * hack to work around it. I call vfs_hash_get() with LK_EXCLOTHER
3198 * and then handle it here. All I want for this case is a v_usecount
3199 * on the vnode to use for recovery, while another thread might
3200 * hold a lock on the vnode. I have the other threads blocked, so
3201 * there isn't any race problem.
3203 if ((ap->a_flags & LK_TYPE_MASK) == LK_EXCLOTHER) {
3204 if ((ap->a_flags & LK_INTERLOCK) == 0)
3206 if ((vp->v_iflag & VI_DOOMED))
3211 return (_lockmgr_args(vp->v_vnlock, ap->a_flags, VI_MTX(vp),
3212 LK_WMESG_DEFAULT, LK_PRIO_DEFAULT, LK_TIMO_DEFAULT, ap->a_file,
3216 #ifdef NFS4_ACL_EXTATTR_NAME
3218 nfs_getacl(struct vop_getacl_args *ap)
3222 if (ap->a_type != ACL_TYPE_NFS4)
3223 return (EOPNOTSUPP);
3224 error = nfsrpc_getacl(ap->a_vp, ap->a_cred, ap->a_td, ap->a_aclp,
3226 if (error > NFSERR_STALE) {
3227 (void) nfscl_maperr(ap->a_td, error, (uid_t)0, (gid_t)0);
3234 nfs_setacl(struct vop_setacl_args *ap)
3238 if (ap->a_type != ACL_TYPE_NFS4)
3239 return (EOPNOTSUPP);
3240 error = nfsrpc_setacl(ap->a_vp, ap->a_cred, ap->a_td, ap->a_aclp,
3242 if (error > NFSERR_STALE) {
3243 (void) nfscl_maperr(ap->a_td, error, (uid_t)0, (gid_t)0);
3249 #endif /* NFS4_ACL_EXTATTR_NAME */