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/namei.h>
51 #include <sys/rwlock.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)
81 static int vop_stdis_text(struct vop_is_text_args *ap);
82 static int vop_stdset_text(struct vop_set_text_args *ap);
83 static int vop_stdunset_text(struct vop_unset_text_args *ap);
84 static int vop_stdget_writecount(struct vop_get_writecount_args *ap);
85 static int vop_stdadd_writecount(struct vop_add_writecount_args *ap);
88 * This vnode table stores what we want to do if the filesystem doesn't
89 * implement a particular VOP.
91 * If there is no specific entry here, we will return EOPNOTSUPP.
93 * Note that every filesystem has to implement either vop_access
94 * or vop_accessx; failing to do so will result in immediate crash
95 * due to stack overflow, as vop_stdaccess() calls vop_stdaccessx(),
96 * which calls vop_stdaccess() etc.
99 struct vop_vector default_vnodeops = {
101 .vop_bypass = VOP_EOPNOTSUPP,
103 .vop_access = vop_stdaccess,
104 .vop_accessx = vop_stdaccessx,
105 .vop_advise = vop_stdadvise,
106 .vop_advlock = vop_stdadvlock,
107 .vop_advlockasync = vop_stdadvlockasync,
108 .vop_advlockpurge = vop_stdadvlockpurge,
109 .vop_allocate = vop_stdallocate,
110 .vop_bmap = vop_stdbmap,
111 .vop_close = VOP_NULL,
112 .vop_fsync = VOP_NULL,
113 .vop_getpages = vop_stdgetpages,
114 .vop_getwritemount = vop_stdgetwritemount,
115 .vop_inactive = VOP_NULL,
116 .vop_ioctl = VOP_ENOTTY,
117 .vop_kqfilter = vop_stdkqfilter,
118 .vop_islocked = vop_stdislocked,
119 .vop_lock1 = vop_stdlock,
120 .vop_lookup = vop_nolookup,
121 .vop_open = VOP_NULL,
122 .vop_pathconf = VOP_EINVAL,
123 .vop_poll = vop_nopoll,
124 .vop_putpages = vop_stdputpages,
125 .vop_readlink = VOP_EINVAL,
126 .vop_rename = vop_norename,
127 .vop_revoke = VOP_PANIC,
128 .vop_strategy = vop_nostrategy,
129 .vop_unlock = vop_stdunlock,
130 .vop_vptocnp = vop_stdvptocnp,
131 .vop_vptofh = vop_stdvptofh,
132 .vop_unp_bind = vop_stdunp_bind,
133 .vop_unp_connect = vop_stdunp_connect,
134 .vop_unp_detach = vop_stdunp_detach,
135 .vop_is_text = vop_stdis_text,
136 .vop_set_text = vop_stdset_text,
137 .vop_unset_text = vop_stdunset_text,
138 .vop_get_writecount = vop_stdget_writecount,
139 .vop_add_writecount = vop_stdadd_writecount,
143 * Series of placeholder functions for various error returns for
148 vop_eopnotsupp(struct vop_generic_args *ap)
151 printf("vop_notsupp[%s]\n", ap->a_desc->vdesc_name);
158 vop_ebadf(struct vop_generic_args *ap)
165 vop_enotty(struct vop_generic_args *ap)
172 vop_einval(struct vop_generic_args *ap)
179 vop_enoent(struct vop_generic_args *ap)
186 vop_null(struct vop_generic_args *ap)
193 * Helper function to panic on some bad VOPs in some filesystems.
196 vop_panic(struct vop_generic_args *ap)
199 panic("filesystem goof: vop_panic[%s]", ap->a_desc->vdesc_name);
203 * vop_std<something> and vop_no<something> are default functions for use by
204 * filesystems that need the "default reasonable" implementation for a
205 * particular operation.
207 * The documentation for the operations they implement exists (if it exists)
208 * in the VOP_<SOMETHING>(9) manpage (all uppercase).
212 * Default vop for filesystems that do not support name lookup
216 struct vop_lookup_args /* {
218 struct vnode **a_vpp;
219 struct componentname *a_cnp;
230 * Handle unlock and reference counting for arguments of vop_rename
231 * for filesystems that do not implement rename operation.
234 vop_norename(struct vop_rename_args *ap)
244 * Strategy routine for VFS devices that have none.
246 * BIO_ERROR and B_INVAL must be cleared prior to calling any strategy
247 * routine. Typically this is done for a BIO_READ strategy call.
248 * Typically B_INVAL is assumed to already be clear prior to a write
249 * and should not be cleared manually unless you just made the buffer
250 * invalid. BIO_ERROR should be cleared either way.
254 vop_nostrategy (struct vop_strategy_args *ap)
256 printf("No strategy for buffer at %p\n", ap->a_bp);
257 vprint("vnode", ap->a_vp);
258 ap->a_bp->b_ioflags |= BIO_ERROR;
259 ap->a_bp->b_error = EOPNOTSUPP;
265 get_next_dirent(struct vnode *vp, struct dirent **dpp, char *dirbuf,
266 int dirbuflen, off_t *off, char **cpos, int *len,
267 int *eofflag, struct thread *td)
274 KASSERT(VOP_ISLOCKED(vp), ("vp %p is not locked", vp));
275 KASSERT(vp->v_type == VDIR, ("vp %p is not a directory", vp));
278 iov.iov_base = dirbuf;
279 iov.iov_len = dirbuflen;
283 uio.uio_offset = *off;
284 uio.uio_resid = dirbuflen;
285 uio.uio_segflg = UIO_SYSSPACE;
286 uio.uio_rw = UIO_READ;
292 error = mac_vnode_check_readdir(td->td_ucred, vp);
295 error = VOP_READDIR(vp, &uio, td->td_ucred, eofflag,
300 *off = uio.uio_offset;
303 *len = (dirbuflen - uio.uio_resid);
309 dp = (struct dirent *)(*cpos);
310 reclen = dp->d_reclen;
313 /* check for malformed directory.. */
314 if (reclen < DIRENT_MINSIZE)
324 * Check if a named file exists in a given directory vnode.
327 dirent_exists(struct vnode *vp, const char *dirname, struct thread *td)
330 int error, eofflag, dirbuflen, len, found;
335 KASSERT(VOP_ISLOCKED(vp), ("vp %p is not locked", vp));
336 KASSERT(vp->v_type == VDIR, ("vp %p is not a directory", vp));
340 error = VOP_GETATTR(vp, &va, td->td_ucred);
344 dirbuflen = DEV_BSIZE;
345 if (dirbuflen < va.va_blocksize)
346 dirbuflen = va.va_blocksize;
347 dirbuf = (char *)malloc(dirbuflen, M_TEMP, M_WAITOK);
352 error = get_next_dirent(vp, &dp, dirbuf, dirbuflen, &off,
353 &cpos, &len, &eofflag, td);
357 if (dp->d_type != DT_WHT && dp->d_fileno != 0 &&
358 strcmp(dp->d_name, dirname) == 0) {
362 } while (len > 0 || !eofflag);
365 free(dirbuf, M_TEMP);
370 vop_stdaccess(struct vop_access_args *ap)
373 KASSERT((ap->a_accmode & ~(VEXEC | VWRITE | VREAD | VADMIN |
374 VAPPEND)) == 0, ("invalid bit in accmode"));
376 return (VOP_ACCESSX(ap->a_vp, ap->a_accmode, ap->a_cred, ap->a_td));
380 vop_stdaccessx(struct vop_accessx_args *ap)
383 accmode_t accmode = ap->a_accmode;
385 error = vfs_unixify_accmode(&accmode);
392 return (VOP_ACCESS(ap->a_vp, accmode, ap->a_cred, ap->a_td));
396 * Advisory record locking support
399 vop_stdadvlock(struct vop_advlock_args *ap)
406 if (ap->a_fl->l_whence == SEEK_END) {
408 * The NFSv4 server must avoid doing a vn_lock() here, since it
409 * can deadlock the nfsd threads, due to a LOR. Fortunately
410 * the NFSv4 server always uses SEEK_SET and this code is
411 * only required for the SEEK_END case.
413 vn_lock(vp, LK_SHARED | LK_RETRY);
414 error = VOP_GETATTR(vp, &vattr, curthread->td_ucred);
421 return (lf_advlock(ap, &(vp->v_lockf), vattr.va_size));
425 vop_stdadvlockasync(struct vop_advlockasync_args *ap)
432 if (ap->a_fl->l_whence == SEEK_END) {
433 /* The size argument is only needed for SEEK_END. */
434 vn_lock(vp, LK_SHARED | LK_RETRY);
435 error = VOP_GETATTR(vp, &vattr, curthread->td_ucred);
442 return (lf_advlockasync(ap, &(vp->v_lockf), vattr.va_size));
446 vop_stdadvlockpurge(struct vop_advlockpurge_args *ap)
451 lf_purgelocks(vp, &vp->v_lockf);
458 * Standard implementation of POSIX pathconf, to get information about limits
460 * Override per filesystem for the case where the filesystem has smaller
465 struct vop_pathconf_args /* {
472 switch (ap->a_name) {
474 *ap->a_retval = NAME_MAX;
477 *ap->a_retval = PATH_MAX;
480 *ap->a_retval = LINK_MAX;
483 *ap->a_retval = MAX_CANON;
486 *ap->a_retval = MAX_INPUT;
489 *ap->a_retval = PIPE_BUF;
491 case _PC_CHOWN_RESTRICTED:
495 *ap->a_retval = _POSIX_VDISABLE;
504 * Standard lock, unlock and islocked functions.
508 struct vop_lock1_args /* {
515 struct vnode *vp = ap->a_vp;
517 return (_lockmgr_args(vp->v_vnlock, ap->a_flags, VI_MTX(vp),
518 LK_WMESG_DEFAULT, LK_PRIO_DEFAULT, LK_TIMO_DEFAULT, ap->a_file,
525 struct vop_unlock_args /* {
530 struct vnode *vp = ap->a_vp;
532 return (lockmgr(vp->v_vnlock, ap->a_flags | LK_RELEASE, VI_MTX(vp)));
538 struct vop_islocked_args /* {
543 return (lockstatus(ap->a_vp->v_vnlock));
547 * Return true for select/poll.
551 struct vop_poll_args /* {
554 struct ucred *a_cred;
559 return (poll_no_poll(ap->a_events));
563 * Implement poll for local filesystems that support it.
567 struct vop_poll_args /* {
570 struct ucred *a_cred;
574 if (ap->a_events & ~POLLSTANDARD)
575 return (vn_pollrecord(ap->a_vp, ap->a_td, ap->a_events));
576 return (ap->a_events & (POLLIN | POLLOUT | POLLRDNORM | POLLWRNORM));
580 * Return our mount point, as we will take charge of the writes.
583 vop_stdgetwritemount(ap)
584 struct vop_getwritemount_args /* {
586 struct mount **a_mpp;
592 * XXX Since this is called unlocked we may be recycled while
593 * attempting to ref the mount. If this is the case or mountpoint
594 * will be set to NULL. We only have to prevent this call from
595 * returning with a ref to an incorrect mountpoint. It is not
596 * harmful to return with a ref to our previous mountpoint.
598 mp = ap->a_vp->v_mount;
601 if (mp != ap->a_vp->v_mount) {
610 /* XXX Needs good comment and VOP_BMAP(9) manpage */
613 struct vop_bmap_args /* {
616 struct bufobj **a_bop;
623 if (ap->a_bop != NULL)
624 *ap->a_bop = &ap->a_vp->v_bufobj;
625 if (ap->a_bnp != NULL)
626 *ap->a_bnp = ap->a_bn * btodb(ap->a_vp->v_mount->mnt_stat.f_iosize);
627 if (ap->a_runp != NULL)
629 if (ap->a_runb != NULL)
636 struct vop_fsync_args /* {
643 struct buf *bp, *nbp;
649 maxretry = 10000; /* large, arbitrarily chosen */
652 if (vp->v_type == VCHR) {
654 mp = vp->v_rdev->si_mountpt;
661 * MARK/SCAN initialization to avoid infinite loops.
663 TAILQ_FOREACH(bp, &bo->bo_dirty.bv_hd, b_bobufs) {
664 bp->b_vflags &= ~BV_SCANNED;
669 * Flush all dirty buffers associated with a vnode.
672 TAILQ_FOREACH_SAFE(bp, &bo->bo_dirty.bv_hd, b_bobufs, nbp) {
673 if ((bp->b_vflags & BV_SCANNED) != 0)
675 bp->b_vflags |= BV_SCANNED;
676 if (BUF_LOCK(bp, LK_EXCLUSIVE | LK_NOWAIT, NULL)) {
677 if (ap->a_waitfor != MNT_WAIT)
680 LK_EXCLUSIVE | LK_INTERLOCK | LK_SLEEPFAIL,
681 BO_LOCKPTR(bo)) != 0) {
688 KASSERT(bp->b_bufobj == bo,
689 ("bp %p wrong b_bufobj %p should be %p",
690 bp, bp->b_bufobj, bo));
691 if ((bp->b_flags & B_DELWRI) == 0)
692 panic("fsync: not dirty");
693 if ((vp->v_object != NULL) && (bp->b_flags & B_CLUSTEROK)) {
700 pause("dirty", hz < 1000 ? 1 : hz / 1000);
706 * If synchronous the caller expects us to completely resolve all
707 * dirty buffers in the system. Wait for in-progress I/O to
708 * complete (which could include background bitmap writes), then
709 * retry if dirty blocks still exist.
711 if (ap->a_waitfor == MNT_WAIT) {
712 bufobj_wwait(bo, 0, 0);
713 if (bo->bo_dirty.bv_cnt > 0) {
715 * If we are unable to write any of these buffers
716 * then we fail now rather than trying endlessly
719 TAILQ_FOREACH(bp, &bo->bo_dirty.bv_hd, b_bobufs)
720 if ((error = bp->b_error) == 0)
722 if ((mp != NULL && mp->mnt_secondary_writes > 0) ||
723 (error == 0 && --maxretry >= 0))
731 vn_printf(vp, "fsync: giving up on dirty (error = %d) ", error);
736 /* XXX Needs good comment and more info in the manpage (VOP_GETPAGES(9)). */
739 struct vop_getpages_args /* {
744 vm_ooffset_t a_offset;
748 return vnode_pager_generic_getpages(ap->a_vp, ap->a_m,
749 ap->a_count, ap->a_reqpage);
753 vop_stdkqfilter(struct vop_kqfilter_args *ap)
755 return vfs_kqfilter(ap);
758 /* XXX Needs good comment and more info in the manpage (VOP_PUTPAGES(9)). */
761 struct vop_putpages_args /* {
767 vm_ooffset_t a_offset;
771 return vnode_pager_generic_putpages(ap->a_vp, ap->a_m, ap->a_count,
772 ap->a_sync, ap->a_rtvals);
776 vop_stdvptofh(struct vop_vptofh_args *ap)
782 vop_stdvptocnp(struct vop_vptocnp_args *ap)
784 struct vnode *vp = ap->a_vp;
785 struct vnode **dvp = ap->a_vpp;
786 struct ucred *cred = ap->a_cred;
787 char *buf = ap->a_buf;
788 int *buflen = ap->a_buflen;
790 int i, error, eofflag, dirbuflen, flags, locked, len, covered;
804 if (vp->v_type != VDIR)
807 error = VOP_GETATTR(vp, &va, cred);
812 locked = VOP_ISLOCKED(vp);
814 NDINIT_ATVP(&nd, LOOKUP, FOLLOW | LOCKLEAF, UIO_SYSSPACE,
817 error = vn_open_cred(&nd, &flags, 0, VN_OPEN_NOAUDIT, cred, NULL);
819 vn_lock(vp, locked | LK_RETRY);
822 NDFREE(&nd, NDF_ONLY_PNBUF);
824 mvp = *dvp = nd.ni_vp;
826 if (vp->v_mount != (*dvp)->v_mount &&
827 ((*dvp)->v_vflag & VV_ROOT) &&
828 ((*dvp)->v_mount->mnt_flag & MNT_UNION)) {
829 *dvp = (*dvp)->v_mount->mnt_vnodecovered;
832 vn_close(mvp, FREAD, cred, td);
834 vn_lock(*dvp, LK_EXCLUSIVE | LK_RETRY);
838 fileno = va.va_fileid;
840 dirbuflen = DEV_BSIZE;
841 if (dirbuflen < va.va_blocksize)
842 dirbuflen = va.va_blocksize;
843 dirbuf = (char *)malloc(dirbuflen, M_TEMP, M_WAITOK);
845 if ((*dvp)->v_type != VDIR) {
853 /* call VOP_READDIR of parent */
854 error = get_next_dirent(*dvp, &dp, dirbuf, dirbuflen, &off,
855 &cpos, &len, &eofflag, td);
859 if ((dp->d_type != DT_WHT) &&
860 (dp->d_fileno == fileno)) {
863 vn_lock(mvp, LK_EXCLUSIVE | LK_RETRY);
864 if (dirent_exists(mvp, dp->d_name, td)) {
867 vn_lock(*dvp, LK_EXCLUSIVE | LK_RETRY);
871 vn_lock(*dvp, LK_EXCLUSIVE | LK_RETRY);
879 if (dp->d_namlen == 1 && dp->d_name[0] == '.') {
882 bcopy(dp->d_name, buf + i, dp->d_namlen);
887 } while (len > 0 || !eofflag);
891 free(dirbuf, M_TEMP);
901 vn_close(mvp, FREAD, cred, td);
903 vn_lock(vp, locked | LK_RETRY);
908 vop_stdallocate(struct vop_allocate_args *ap)
914 struct vattr vattr, *vap;
916 off_t fsize, len, cur, offset;
929 offset = *ap->a_offset;
931 error = VOP_GETATTR(vp, vap, td->td_ucred);
934 fsize = vap->va_size;
935 iosize = vap->va_blocksize;
937 iosize = BLKDEV_IOSIZE;
938 if (iosize > MAXPHYS)
940 buf = malloc(iosize, M_TEMP, M_WAITOK);
944 * Check if the filesystem sets f_maxfilesize; if not use
945 * VOP_SETATTR to perform the check.
947 error = VFS_STATFS(vp->v_mount, &sfs, td);
950 if (sfs.f_maxfilesize) {
951 if (offset > sfs.f_maxfilesize || len > sfs.f_maxfilesize ||
952 offset + len > sfs.f_maxfilesize) {
958 if (offset + len > vap->va_size) {
960 * Test offset + len against the filesystem's maxfilesize.
963 vap->va_size = offset + len;
964 error = VOP_SETATTR(vp, vap, td->td_ucred);
968 vap->va_size = fsize;
969 error = VOP_SETATTR(vp, vap, td->td_ucred);
976 * Read and write back anything below the nominal file
977 * size. There's currently no way outside the filesystem
978 * to know whether this area is sparse or not.
981 if ((offset % iosize) != 0)
982 cur -= (offset % iosize);
985 if (offset < fsize) {
988 auio.uio_iov = &aiov;
990 auio.uio_offset = offset;
991 auio.uio_resid = cur;
992 auio.uio_segflg = UIO_SYSSPACE;
993 auio.uio_rw = UIO_READ;
995 error = VOP_READ(vp, &auio, 0, td->td_ucred);
998 if (auio.uio_resid > 0) {
999 bzero(buf + cur - auio.uio_resid,
1006 aiov.iov_base = buf;
1008 auio.uio_iov = &aiov;
1009 auio.uio_iovcnt = 1;
1010 auio.uio_offset = offset;
1011 auio.uio_resid = cur;
1012 auio.uio_segflg = UIO_SYSSPACE;
1013 auio.uio_rw = UIO_WRITE;
1016 error = VOP_WRITE(vp, &auio, 0, td->td_ucred);
1030 *ap->a_offset = offset;
1036 vop_stdadvise(struct vop_advise_args *ap)
1043 switch (ap->a_advice) {
1044 case POSIX_FADV_WILLNEED:
1046 * Do nothing for now. Filesystems should provide a
1047 * custom method which starts an asynchronous read of
1048 * the requested region.
1052 case POSIX_FADV_DONTNEED:
1054 * Flush any open FS buffers and then remove pages
1055 * from the backing VM object. Using vinvalbuf() here
1056 * is a bit heavy-handed as it flushes all buffers for
1057 * the given vnode, not just the buffers covering the
1061 vn_lock(vp, LK_EXCLUSIVE | LK_RETRY);
1062 if (vp->v_iflag & VI_DOOMED) {
1066 vinvalbuf(vp, V_CLEANONLY, 0, 0);
1067 if (vp->v_object != NULL) {
1068 start = trunc_page(ap->a_start);
1069 end = round_page(ap->a_end);
1070 VM_OBJECT_WLOCK(vp->v_object);
1071 vm_object_page_cache(vp->v_object, OFF_TO_IDX(start),
1073 VM_OBJECT_WUNLOCK(vp->v_object);
1085 vop_stdunp_bind(struct vop_unp_bind_args *ap)
1088 ap->a_vp->v_socket = ap->a_socket;
1093 vop_stdunp_connect(struct vop_unp_connect_args *ap)
1096 *ap->a_socket = ap->a_vp->v_socket;
1101 vop_stdunp_detach(struct vop_unp_detach_args *ap)
1104 ap->a_vp->v_socket = NULL;
1109 vop_stdis_text(struct vop_is_text_args *ap)
1112 return ((ap->a_vp->v_vflag & VV_TEXT) != 0);
1116 vop_stdset_text(struct vop_set_text_args *ap)
1119 ap->a_vp->v_vflag |= VV_TEXT;
1124 vop_stdunset_text(struct vop_unset_text_args *ap)
1127 ap->a_vp->v_vflag &= ~VV_TEXT;
1132 vop_stdget_writecount(struct vop_get_writecount_args *ap)
1135 *ap->a_writecount = ap->a_vp->v_writecount;
1140 vop_stdadd_writecount(struct vop_add_writecount_args *ap)
1143 ap->a_vp->v_writecount += ap->a_inc;
1149 * used to fill the vfs function table to get reasonable default return values.
1152 vfs_stdroot (mp, flags, vpp)
1158 return (EOPNOTSUPP);
1162 vfs_stdstatfs (mp, sbp)
1167 return (EOPNOTSUPP);
1171 vfs_stdquotactl (mp, cmds, uid, arg)
1178 return (EOPNOTSUPP);
1182 vfs_stdsync(mp, waitfor)
1186 struct vnode *vp, *mvp;
1188 int error, lockreq, allerror = 0;
1191 lockreq = LK_EXCLUSIVE | LK_INTERLOCK;
1192 if (waitfor != MNT_WAIT)
1193 lockreq |= LK_NOWAIT;
1195 * Force stale buffer cache information to be flushed.
1198 MNT_VNODE_FOREACH_ALL(vp, mp, mvp) {
1199 if (vp->v_bufobj.bo_dirty.bv_cnt == 0) {
1203 if ((error = vget(vp, lockreq, td)) != 0) {
1204 if (error == ENOENT) {
1205 MNT_VNODE_FOREACH_ALL_ABORT(mp, mvp);
1210 error = VOP_FSYNC(vp, waitfor, td);
1219 vfs_stdnosync (mp, waitfor)
1228 vfs_stdvget (mp, ino, flags, vpp)
1235 return (EOPNOTSUPP);
1239 vfs_stdfhtovp (mp, fhp, flags, vpp)
1246 return (EOPNOTSUPP);
1251 struct vfsconf *vfsp;
1258 vfs_stduninit (vfsp)
1259 struct vfsconf *vfsp;
1266 vfs_stdextattrctl(mp, cmd, filename_vp, attrnamespace, attrname)
1269 struct vnode *filename_vp;
1271 const char *attrname;
1274 if (filename_vp != NULL)
1275 VOP_UNLOCK(filename_vp, 0);
1276 return (EOPNOTSUPP);
1280 vfs_stdsysctl(mp, op, req)
1283 struct sysctl_req *req;
1286 return (EOPNOTSUPP);
1289 /* end of vfs default ops */