2 * Copyright (c) 1989, 1993
3 * The Regents of the University of California. All rights reserved.
5 * This code is derived from software contributed
6 * to Berkeley by John Heidemann of the UCLA Ficus project.
8 * Source: * @(#)i405_init.c 2.10 92/04/27 UCLA Ficus project
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 * 4. Neither the name of the University nor the names of its contributors
19 * may be used to endorse or promote products derived from this software
20 * without specific prior written permission.
22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
35 #include <sys/cdefs.h>
36 __FBSDID("$FreeBSD$");
38 #include <sys/param.h>
39 #include <sys/systm.h>
43 #include <sys/event.h>
44 #include <sys/kernel.h>
45 #include <sys/limits.h>
47 #include <sys/lockf.h>
48 #include <sys/malloc.h>
49 #include <sys/mount.h>
50 #include <sys/mutex.h>
51 #include <sys/namei.h>
52 #include <sys/fcntl.h>
53 #include <sys/unistd.h>
54 #include <sys/vnode.h>
55 #include <sys/dirent.h>
58 #include <security/mac/mac_framework.h>
61 #include <vm/vm_object.h>
62 #include <vm/vm_extern.h>
64 #include <vm/vm_map.h>
65 #include <vm/vm_page.h>
66 #include <vm/vm_pager.h>
67 #include <vm/vnode_pager.h>
69 static int vop_nolookup(struct vop_lookup_args *);
70 static int vop_norename(struct vop_rename_args *);
71 static int vop_nostrategy(struct vop_strategy_args *);
72 static int get_next_dirent(struct vnode *vp, struct dirent **dpp,
73 char *dirbuf, int dirbuflen, off_t *off,
74 char **cpos, int *len, int *eofflag,
76 static int dirent_exists(struct vnode *vp, const char *dirname,
79 #define DIRENT_MINSIZE (sizeof(struct dirent) - (MAXNAMLEN+1) + 4)
82 * This vnode table stores what we want to do if the filesystem doesn't
83 * implement a particular VOP.
85 * If there is no specific entry here, we will return EOPNOTSUPP.
87 * Note that every filesystem has to implement either vop_access
88 * or vop_accessx; failing to do so will result in immediate crash
89 * due to stack overflow, as vop_stdaccess() calls vop_stdaccessx(),
90 * which calls vop_stdaccess() etc.
93 struct vop_vector default_vnodeops = {
95 .vop_bypass = VOP_EOPNOTSUPP,
97 .vop_access = vop_stdaccess,
98 .vop_accessx = vop_stdaccessx,
99 .vop_advise = vop_stdadvise,
100 .vop_advlock = vop_stdadvlock,
101 .vop_advlockasync = vop_stdadvlockasync,
102 .vop_advlockpurge = vop_stdadvlockpurge,
103 .vop_allocate = vop_stdallocate,
104 .vop_bmap = vop_stdbmap,
105 .vop_close = VOP_NULL,
106 .vop_fsync = VOP_NULL,
107 .vop_getpages = vop_stdgetpages,
108 .vop_getwritemount = vop_stdgetwritemount,
109 .vop_inactive = VOP_NULL,
110 .vop_ioctl = VOP_ENOTTY,
111 .vop_kqfilter = vop_stdkqfilter,
112 .vop_islocked = vop_stdislocked,
113 .vop_lock1 = vop_stdlock,
114 .vop_lookup = vop_nolookup,
115 .vop_open = VOP_NULL,
116 .vop_pathconf = VOP_EINVAL,
117 .vop_poll = vop_nopoll,
118 .vop_putpages = vop_stdputpages,
119 .vop_readlink = VOP_EINVAL,
120 .vop_rename = vop_norename,
121 .vop_revoke = VOP_PANIC,
122 .vop_strategy = vop_nostrategy,
123 .vop_unlock = vop_stdunlock,
124 .vop_vptocnp = vop_stdvptocnp,
125 .vop_vptofh = vop_stdvptofh,
126 .vop_unp_bind = vop_stdunp_bind,
127 .vop_unp_connect = vop_stdunp_connect,
128 .vop_unp_detach = vop_stdunp_detach,
132 * Series of placeholder functions for various error returns for
137 vop_eopnotsupp(struct vop_generic_args *ap)
140 printf("vop_notsupp[%s]\n", ap->a_desc->vdesc_name);
147 vop_ebadf(struct vop_generic_args *ap)
154 vop_enotty(struct vop_generic_args *ap)
161 vop_einval(struct vop_generic_args *ap)
168 vop_enoent(struct vop_generic_args *ap)
175 vop_null(struct vop_generic_args *ap)
182 * Helper function to panic on some bad VOPs in some filesystems.
185 vop_panic(struct vop_generic_args *ap)
188 panic("filesystem goof: vop_panic[%s]", ap->a_desc->vdesc_name);
192 * vop_std<something> and vop_no<something> are default functions for use by
193 * filesystems that need the "default reasonable" implementation for a
194 * particular operation.
196 * The documentation for the operations they implement exists (if it exists)
197 * in the VOP_<SOMETHING>(9) manpage (all uppercase).
201 * Default vop for filesystems that do not support name lookup
205 struct vop_lookup_args /* {
207 struct vnode **a_vpp;
208 struct componentname *a_cnp;
219 * Handle unlock and reference counting for arguments of vop_rename
220 * for filesystems that do not implement rename operation.
223 vop_norename(struct vop_rename_args *ap)
233 * Strategy routine for VFS devices that have none.
235 * BIO_ERROR and B_INVAL must be cleared prior to calling any strategy
236 * routine. Typically this is done for a BIO_READ strategy call.
237 * Typically B_INVAL is assumed to already be clear prior to a write
238 * and should not be cleared manually unless you just made the buffer
239 * invalid. BIO_ERROR should be cleared either way.
243 vop_nostrategy (struct vop_strategy_args *ap)
245 printf("No strategy for buffer at %p\n", ap->a_bp);
246 vprint("vnode", ap->a_vp);
247 ap->a_bp->b_ioflags |= BIO_ERROR;
248 ap->a_bp->b_error = EOPNOTSUPP;
254 get_next_dirent(struct vnode *vp, struct dirent **dpp, char *dirbuf,
255 int dirbuflen, off_t *off, char **cpos, int *len,
256 int *eofflag, struct thread *td)
263 KASSERT(VOP_ISLOCKED(vp), ("vp %p is not locked", vp));
264 KASSERT(vp->v_type == VDIR, ("vp %p is not a directory", vp));
267 iov.iov_base = dirbuf;
268 iov.iov_len = dirbuflen;
272 uio.uio_offset = *off;
273 uio.uio_resid = dirbuflen;
274 uio.uio_segflg = UIO_SYSSPACE;
275 uio.uio_rw = UIO_READ;
281 error = mac_vnode_check_readdir(td->td_ucred, vp);
284 error = VOP_READDIR(vp, &uio, td->td_ucred, eofflag,
289 *off = uio.uio_offset;
292 *len = (dirbuflen - uio.uio_resid);
298 dp = (struct dirent *)(*cpos);
299 reclen = dp->d_reclen;
302 /* check for malformed directory.. */
303 if (reclen < DIRENT_MINSIZE)
313 * Check if a named file exists in a given directory vnode.
316 dirent_exists(struct vnode *vp, const char *dirname, struct thread *td)
319 int error, eofflag, dirbuflen, len, found;
324 KASSERT(VOP_ISLOCKED(vp), ("vp %p is not locked", vp));
325 KASSERT(vp->v_type == VDIR, ("vp %p is not a directory", vp));
329 error = VOP_GETATTR(vp, &va, td->td_ucred);
333 dirbuflen = DEV_BSIZE;
334 if (dirbuflen < va.va_blocksize)
335 dirbuflen = va.va_blocksize;
336 dirbuf = (char *)malloc(dirbuflen, M_TEMP, M_WAITOK);
341 error = get_next_dirent(vp, &dp, dirbuf, dirbuflen, &off,
342 &cpos, &len, &eofflag, td);
346 if ((dp->d_type != DT_WHT) &&
347 !strcmp(dp->d_name, dirname)) {
351 } while (len > 0 || !eofflag);
354 free(dirbuf, M_TEMP);
359 vop_stdaccess(struct vop_access_args *ap)
362 KASSERT((ap->a_accmode & ~(VEXEC | VWRITE | VREAD | VADMIN |
363 VAPPEND)) == 0, ("invalid bit in accmode"));
365 return (VOP_ACCESSX(ap->a_vp, ap->a_accmode, ap->a_cred, ap->a_td));
369 vop_stdaccessx(struct vop_accessx_args *ap)
372 accmode_t accmode = ap->a_accmode;
374 error = vfs_unixify_accmode(&accmode);
381 return (VOP_ACCESS(ap->a_vp, accmode, ap->a_cred, ap->a_td));
385 * Advisory record locking support
388 vop_stdadvlock(struct vop_advlock_args *ap)
396 cred = curthread->td_ucred;
397 vn_lock(vp, LK_SHARED | LK_RETRY);
398 error = VOP_GETATTR(vp, &vattr, cred);
403 return (lf_advlock(ap, &(vp->v_lockf), vattr.va_size));
407 vop_stdadvlockasync(struct vop_advlockasync_args *ap)
415 cred = curthread->td_ucred;
416 vn_lock(vp, LK_SHARED | LK_RETRY);
417 error = VOP_GETATTR(vp, &vattr, cred);
422 return (lf_advlockasync(ap, &(vp->v_lockf), vattr.va_size));
426 vop_stdadvlockpurge(struct vop_advlockpurge_args *ap)
431 lf_purgelocks(vp, &vp->v_lockf);
438 * Standard implementation of POSIX pathconf, to get information about limits
440 * Override per filesystem for the case where the filesystem has smaller
445 struct vop_pathconf_args /* {
452 switch (ap->a_name) {
454 *ap->a_retval = NAME_MAX;
457 *ap->a_retval = PATH_MAX;
460 *ap->a_retval = LINK_MAX;
463 *ap->a_retval = MAX_CANON;
466 *ap->a_retval = MAX_INPUT;
469 *ap->a_retval = PIPE_BUF;
471 case _PC_CHOWN_RESTRICTED:
475 *ap->a_retval = _POSIX_VDISABLE;
484 * Standard lock, unlock and islocked functions.
488 struct vop_lock1_args /* {
495 struct vnode *vp = ap->a_vp;
497 return (_lockmgr_args(vp->v_vnlock, ap->a_flags, VI_MTX(vp),
498 LK_WMESG_DEFAULT, LK_PRIO_DEFAULT, LK_TIMO_DEFAULT, ap->a_file,
505 struct vop_unlock_args /* {
510 struct vnode *vp = ap->a_vp;
512 return (lockmgr(vp->v_vnlock, ap->a_flags | LK_RELEASE, VI_MTX(vp)));
518 struct vop_islocked_args /* {
523 return (lockstatus(ap->a_vp->v_vnlock));
527 * Return true for select/poll.
531 struct vop_poll_args /* {
534 struct ucred *a_cred;
539 return (poll_no_poll(ap->a_events));
543 * Implement poll for local filesystems that support it.
547 struct vop_poll_args /* {
550 struct ucred *a_cred;
554 if (ap->a_events & ~POLLSTANDARD)
555 return (vn_pollrecord(ap->a_vp, ap->a_td, ap->a_events));
556 return (ap->a_events & (POLLIN | POLLOUT | POLLRDNORM | POLLWRNORM));
560 * Return our mount point, as we will take charge of the writes.
563 vop_stdgetwritemount(ap)
564 struct vop_getwritemount_args /* {
566 struct mount **a_mpp;
572 * XXX Since this is called unlocked we may be recycled while
573 * attempting to ref the mount. If this is the case or mountpoint
574 * will be set to NULL. We only have to prevent this call from
575 * returning with a ref to an incorrect mountpoint. It is not
576 * harmful to return with a ref to our previous mountpoint.
578 mp = ap->a_vp->v_mount;
581 if (mp != ap->a_vp->v_mount) {
590 /* XXX Needs good comment and VOP_BMAP(9) manpage */
593 struct vop_bmap_args /* {
596 struct bufobj **a_bop;
603 if (ap->a_bop != NULL)
604 *ap->a_bop = &ap->a_vp->v_bufobj;
605 if (ap->a_bnp != NULL)
606 *ap->a_bnp = ap->a_bn * btodb(ap->a_vp->v_mount->mnt_stat.f_iosize);
607 if (ap->a_runp != NULL)
609 if (ap->a_runb != NULL)
616 struct vop_fsync_args /* {
618 struct ucred *a_cred;
623 struct vnode *vp = ap->a_vp;
628 int maxretry = 1000; /* large, arbitrarily chosen */
634 * MARK/SCAN initialization to avoid infinite loops.
636 TAILQ_FOREACH(bp, &bo->bo_dirty.bv_hd, b_bobufs) {
637 bp->b_vflags &= ~BV_SCANNED;
642 * Flush all dirty buffers associated with a vnode.
645 TAILQ_FOREACH_SAFE(bp, &bo->bo_dirty.bv_hd, b_bobufs, nbp) {
646 if ((bp->b_vflags & BV_SCANNED) != 0)
648 bp->b_vflags |= BV_SCANNED;
649 if (BUF_LOCK(bp, LK_EXCLUSIVE | LK_NOWAIT, NULL))
652 KASSERT(bp->b_bufobj == bo,
653 ("bp %p wrong b_bufobj %p should be %p",
654 bp, bp->b_bufobj, bo));
655 if ((bp->b_flags & B_DELWRI) == 0)
656 panic("fsync: not dirty");
657 if ((vp->v_object != NULL) && (bp->b_flags & B_CLUSTEROK)) {
668 * If synchronous the caller expects us to completely resolve all
669 * dirty buffers in the system. Wait for in-progress I/O to
670 * complete (which could include background bitmap writes), then
671 * retry if dirty blocks still exist.
673 if (ap->a_waitfor == MNT_WAIT) {
674 bufobj_wwait(bo, 0, 0);
675 if (bo->bo_dirty.bv_cnt > 0) {
677 * If we are unable to write any of these buffers
678 * then we fail now rather than trying endlessly
681 TAILQ_FOREACH(bp, &bo->bo_dirty.bv_hd, b_bobufs)
682 if ((error = bp->b_error) == 0)
684 if (error == 0 && --maxretry >= 0)
691 vprint("fsync: giving up on dirty", vp);
696 /* XXX Needs good comment and more info in the manpage (VOP_GETPAGES(9)). */
699 struct vop_getpages_args /* {
704 vm_ooffset_t a_offset;
708 return vnode_pager_generic_getpages(ap->a_vp, ap->a_m,
709 ap->a_count, ap->a_reqpage);
713 vop_stdkqfilter(struct vop_kqfilter_args *ap)
715 return vfs_kqfilter(ap);
718 /* XXX Needs good comment and more info in the manpage (VOP_PUTPAGES(9)). */
721 struct vop_putpages_args /* {
727 vm_ooffset_t a_offset;
731 return vnode_pager_generic_putpages(ap->a_vp, ap->a_m, ap->a_count,
732 ap->a_sync, ap->a_rtvals);
736 vop_stdvptofh(struct vop_vptofh_args *ap)
742 vop_stdvptocnp(struct vop_vptocnp_args *ap)
744 struct vnode *vp = ap->a_vp;
745 struct vnode **dvp = ap->a_vpp;
746 struct ucred *cred = ap->a_cred;
747 char *buf = ap->a_buf;
748 int *buflen = ap->a_buflen;
750 int i, error, eofflag, dirbuflen, flags, locked, len, covered;
764 if (vp->v_type != VDIR)
767 error = VOP_GETATTR(vp, &va, cred);
772 locked = VOP_ISLOCKED(vp);
774 NDINIT_ATVP(&nd, LOOKUP, FOLLOW | LOCKLEAF, UIO_SYSSPACE,
777 error = vn_open_cred(&nd, &flags, 0, VN_OPEN_NOAUDIT, cred, NULL);
779 vn_lock(vp, locked | LK_RETRY);
782 NDFREE(&nd, NDF_ONLY_PNBUF);
784 mvp = *dvp = nd.ni_vp;
786 if (vp->v_mount != (*dvp)->v_mount &&
787 ((*dvp)->v_vflag & VV_ROOT) &&
788 ((*dvp)->v_mount->mnt_flag & MNT_UNION)) {
789 *dvp = (*dvp)->v_mount->mnt_vnodecovered;
792 vn_close(mvp, FREAD, cred, td);
794 vn_lock(*dvp, LK_EXCLUSIVE | LK_RETRY);
798 fileno = va.va_fileid;
800 dirbuflen = DEV_BSIZE;
801 if (dirbuflen < va.va_blocksize)
802 dirbuflen = va.va_blocksize;
803 dirbuf = (char *)malloc(dirbuflen, M_TEMP, M_WAITOK);
805 if ((*dvp)->v_type != VDIR) {
813 /* call VOP_READDIR of parent */
814 error = get_next_dirent(*dvp, &dp, dirbuf, dirbuflen, &off,
815 &cpos, &len, &eofflag, td);
819 if ((dp->d_type != DT_WHT) &&
820 (dp->d_fileno == fileno)) {
823 vn_lock(mvp, LK_EXCLUSIVE | LK_RETRY);
824 if (dirent_exists(mvp, dp->d_name, td)) {
827 vn_lock(*dvp, LK_EXCLUSIVE | LK_RETRY);
831 vn_lock(*dvp, LK_EXCLUSIVE | LK_RETRY);
839 bcopy(dp->d_name, buf + i, dp->d_namlen);
843 } while (len > 0 || !eofflag);
847 free(dirbuf, M_TEMP);
857 vn_close(mvp, FREAD, cred, td);
859 vn_lock(vp, locked | LK_RETRY);
864 vop_stdallocate(struct vop_allocate_args *ap)
870 struct vattr vattr, *vap;
872 off_t fsize, len, cur, offset;
885 offset = *ap->a_offset;
887 error = VOP_GETATTR(vp, vap, td->td_ucred);
890 fsize = vap->va_size;
891 iosize = vap->va_blocksize;
893 iosize = BLKDEV_IOSIZE;
894 if (iosize > MAXPHYS)
896 buf = malloc(iosize, M_TEMP, M_WAITOK);
900 * Check if the filesystem sets f_maxfilesize; if not use
901 * VOP_SETATTR to perform the check.
903 error = VFS_STATFS(vp->v_mount, &sfs, td);
906 if (sfs.f_maxfilesize) {
907 if (offset > sfs.f_maxfilesize || len > sfs.f_maxfilesize ||
908 offset + len > sfs.f_maxfilesize) {
914 if (offset + len > vap->va_size) {
916 * Test offset + len against the filesystem's maxfilesize.
919 vap->va_size = offset + len;
920 error = VOP_SETATTR(vp, vap, td->td_ucred);
924 vap->va_size = fsize;
925 error = VOP_SETATTR(vp, vap, td->td_ucred);
932 * Read and write back anything below the nominal file
933 * size. There's currently no way outside the filesystem
934 * to know whether this area is sparse or not.
937 if ((offset % iosize) != 0)
938 cur -= (offset % iosize);
941 if (offset < fsize) {
944 auio.uio_iov = &aiov;
946 auio.uio_offset = offset;
947 auio.uio_resid = cur;
948 auio.uio_segflg = UIO_SYSSPACE;
949 auio.uio_rw = UIO_READ;
951 error = VOP_READ(vp, &auio, 0, td->td_ucred);
954 if (auio.uio_resid > 0) {
955 bzero(buf + cur - auio.uio_resid,
964 auio.uio_iov = &aiov;
966 auio.uio_offset = offset;
967 auio.uio_resid = cur;
968 auio.uio_segflg = UIO_SYSSPACE;
969 auio.uio_rw = UIO_WRITE;
972 error = VOP_WRITE(vp, &auio, 0, td->td_ucred);
986 *ap->a_offset = offset;
992 vop_stdadvise(struct vop_advise_args *ap)
996 int error, vfslocked;
999 switch (ap->a_advice) {
1000 case POSIX_FADV_WILLNEED:
1002 * Do nothing for now. Filesystems should provide a
1003 * custom method which starts an asynchronous read of
1004 * the requested region.
1008 case POSIX_FADV_DONTNEED:
1010 * Flush any open FS buffers and then remove pages
1011 * from the backing VM object. Using vinvalbuf() here
1012 * is a bit heavy-handed as it flushes all buffers for
1013 * the given vnode, not just the buffers covering the
1017 vfslocked = VFS_LOCK_GIANT(vp->v_mount);
1018 vn_lock(vp, LK_EXCLUSIVE | LK_RETRY);
1019 if (vp->v_iflag & VI_DOOMED) {
1021 VFS_UNLOCK_GIANT(vfslocked);
1024 vinvalbuf(vp, V_CLEANONLY, 0, 0);
1025 if (vp->v_object != NULL) {
1026 start = trunc_page(ap->a_start);
1027 end = round_page(ap->a_end);
1028 VM_OBJECT_LOCK(vp->v_object);
1029 vm_object_page_cache(vp->v_object, OFF_TO_IDX(start),
1031 VM_OBJECT_UNLOCK(vp->v_object);
1034 VFS_UNLOCK_GIANT(vfslocked);
1044 vop_stdunp_bind(struct vop_unp_bind_args *ap)
1047 ap->a_vp->v_socket = ap->a_socket;
1052 vop_stdunp_connect(struct vop_unp_connect_args *ap)
1055 *ap->a_socket = ap->a_vp->v_socket;
1060 vop_stdunp_detach(struct vop_unp_detach_args *ap)
1063 ap->a_vp->v_socket = NULL;
1069 * used to fill the vfs function table to get reasonable default return values.
1072 vfs_stdroot (mp, flags, vpp)
1078 return (EOPNOTSUPP);
1082 vfs_stdstatfs (mp, sbp)
1087 return (EOPNOTSUPP);
1091 vfs_stdquotactl (mp, cmds, uid, arg)
1098 return (EOPNOTSUPP);
1102 vfs_stdsync(mp, waitfor)
1106 struct vnode *vp, *mvp;
1108 int error, lockreq, allerror = 0;
1111 lockreq = LK_EXCLUSIVE | LK_INTERLOCK;
1112 if (waitfor != MNT_WAIT)
1113 lockreq |= LK_NOWAIT;
1115 * Force stale buffer cache information to be flushed.
1119 MNT_VNODE_FOREACH(vp, mp, mvp) {
1120 /* bv_cnt is an acceptable race here. */
1121 if (vp->v_bufobj.bo_dirty.bv_cnt == 0)
1125 if ((error = vget(vp, lockreq, td)) != 0) {
1127 if (error == ENOENT) {
1128 MNT_VNODE_FOREACH_ABORT_ILOCKED(mp, mvp);
1133 error = VOP_FSYNC(vp, waitfor, td);
1144 vfs_stdnosync (mp, waitfor)
1153 vfs_stdvget (mp, ino, flags, vpp)
1160 return (EOPNOTSUPP);
1164 vfs_stdfhtovp (mp, fhp, flags, vpp)
1171 return (EOPNOTSUPP);
1176 struct vfsconf *vfsp;
1183 vfs_stduninit (vfsp)
1184 struct vfsconf *vfsp;
1191 vfs_stdextattrctl(mp, cmd, filename_vp, attrnamespace, attrname)
1194 struct vnode *filename_vp;
1196 const char *attrname;
1199 if (filename_vp != NULL)
1200 VOP_UNLOCK(filename_vp, 0);
1201 return (EOPNOTSUPP);
1205 vfs_stdsysctl(mp, op, req)
1208 struct sysctl_req *req;
1211 return (EOPNOTSUPP);
1214 /* end of vfs default ops */