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);
86 static int vop_stdgetpages_async(struct vop_getpages_async_args *ap);
89 * This vnode table stores what we want to do if the filesystem doesn't
90 * implement a particular VOP.
92 * If there is no specific entry here, we will return EOPNOTSUPP.
94 * Note that every filesystem has to implement either vop_access
95 * or vop_accessx; failing to do so will result in immediate crash
96 * due to stack overflow, as vop_stdaccess() calls vop_stdaccessx(),
97 * which calls vop_stdaccess() etc.
100 struct vop_vector default_vnodeops = {
102 .vop_bypass = VOP_EOPNOTSUPP,
104 .vop_access = vop_stdaccess,
105 .vop_accessx = vop_stdaccessx,
106 .vop_advise = vop_stdadvise,
107 .vop_advlock = vop_stdadvlock,
108 .vop_advlockasync = vop_stdadvlockasync,
109 .vop_advlockpurge = vop_stdadvlockpurge,
110 .vop_allocate = vop_stdallocate,
111 .vop_bmap = vop_stdbmap,
112 .vop_close = VOP_NULL,
113 .vop_fsync = VOP_NULL,
114 .vop_getpages = vop_stdgetpages,
115 .vop_getpages_async = vop_stdgetpages_async,
116 .vop_getwritemount = vop_stdgetwritemount,
117 .vop_inactive = VOP_NULL,
118 .vop_ioctl = VOP_ENOTTY,
119 .vop_kqfilter = vop_stdkqfilter,
120 .vop_islocked = vop_stdislocked,
121 .vop_lock1 = vop_stdlock,
122 .vop_lookup = vop_nolookup,
123 .vop_open = VOP_NULL,
124 .vop_pathconf = VOP_EINVAL,
125 .vop_poll = vop_nopoll,
126 .vop_putpages = vop_stdputpages,
127 .vop_readlink = VOP_EINVAL,
128 .vop_rename = vop_norename,
129 .vop_revoke = VOP_PANIC,
130 .vop_strategy = vop_nostrategy,
131 .vop_unlock = vop_stdunlock,
132 .vop_vptocnp = vop_stdvptocnp,
133 .vop_vptofh = vop_stdvptofh,
134 .vop_unp_bind = vop_stdunp_bind,
135 .vop_unp_connect = vop_stdunp_connect,
136 .vop_unp_detach = vop_stdunp_detach,
137 .vop_is_text = vop_stdis_text,
138 .vop_set_text = vop_stdset_text,
139 .vop_unset_text = vop_stdunset_text,
140 .vop_get_writecount = vop_stdget_writecount,
141 .vop_add_writecount = vop_stdadd_writecount,
145 * Series of placeholder functions for various error returns for
150 vop_eopnotsupp(struct vop_generic_args *ap)
153 printf("vop_notsupp[%s]\n", ap->a_desc->vdesc_name);
160 vop_ebadf(struct vop_generic_args *ap)
167 vop_enotty(struct vop_generic_args *ap)
174 vop_einval(struct vop_generic_args *ap)
181 vop_enoent(struct vop_generic_args *ap)
188 vop_null(struct vop_generic_args *ap)
195 * Helper function to panic on some bad VOPs in some filesystems.
198 vop_panic(struct vop_generic_args *ap)
201 panic("filesystem goof: vop_panic[%s]", ap->a_desc->vdesc_name);
205 * vop_std<something> and vop_no<something> are default functions for use by
206 * filesystems that need the "default reasonable" implementation for a
207 * particular operation.
209 * The documentation for the operations they implement exists (if it exists)
210 * in the VOP_<SOMETHING>(9) manpage (all uppercase).
214 * Default vop for filesystems that do not support name lookup
218 struct vop_lookup_args /* {
220 struct vnode **a_vpp;
221 struct componentname *a_cnp;
232 * Handle unlock and reference counting for arguments of vop_rename
233 * for filesystems that do not implement rename operation.
236 vop_norename(struct vop_rename_args *ap)
246 * Strategy routine for VFS devices that have none.
248 * BIO_ERROR and B_INVAL must be cleared prior to calling any strategy
249 * routine. Typically this is done for a BIO_READ strategy call.
250 * Typically B_INVAL is assumed to already be clear prior to a write
251 * and should not be cleared manually unless you just made the buffer
252 * invalid. BIO_ERROR should be cleared either way.
256 vop_nostrategy (struct vop_strategy_args *ap)
258 printf("No strategy for buffer at %p\n", ap->a_bp);
259 vprint("vnode", ap->a_vp);
260 ap->a_bp->b_ioflags |= BIO_ERROR;
261 ap->a_bp->b_error = EOPNOTSUPP;
267 get_next_dirent(struct vnode *vp, struct dirent **dpp, char *dirbuf,
268 int dirbuflen, off_t *off, char **cpos, int *len,
269 int *eofflag, struct thread *td)
276 KASSERT(VOP_ISLOCKED(vp), ("vp %p is not locked", vp));
277 KASSERT(vp->v_type == VDIR, ("vp %p is not a directory", vp));
280 iov.iov_base = dirbuf;
281 iov.iov_len = dirbuflen;
285 uio.uio_offset = *off;
286 uio.uio_resid = dirbuflen;
287 uio.uio_segflg = UIO_SYSSPACE;
288 uio.uio_rw = UIO_READ;
294 error = mac_vnode_check_readdir(td->td_ucred, vp);
297 error = VOP_READDIR(vp, &uio, td->td_ucred, eofflag,
302 *off = uio.uio_offset;
305 *len = (dirbuflen - uio.uio_resid);
311 dp = (struct dirent *)(*cpos);
312 reclen = dp->d_reclen;
315 /* check for malformed directory.. */
316 if (reclen < DIRENT_MINSIZE)
326 * Check if a named file exists in a given directory vnode.
329 dirent_exists(struct vnode *vp, const char *dirname, struct thread *td)
332 int error, eofflag, dirbuflen, len, found;
337 KASSERT(VOP_ISLOCKED(vp), ("vp %p is not locked", vp));
338 KASSERT(vp->v_type == VDIR, ("vp %p is not a directory", vp));
342 error = VOP_GETATTR(vp, &va, td->td_ucred);
346 dirbuflen = DEV_BSIZE;
347 if (dirbuflen < va.va_blocksize)
348 dirbuflen = va.va_blocksize;
349 dirbuf = (char *)malloc(dirbuflen, M_TEMP, M_WAITOK);
354 error = get_next_dirent(vp, &dp, dirbuf, dirbuflen, &off,
355 &cpos, &len, &eofflag, td);
359 if (dp->d_type != DT_WHT && dp->d_fileno != 0 &&
360 strcmp(dp->d_name, dirname) == 0) {
364 } while (len > 0 || !eofflag);
367 free(dirbuf, M_TEMP);
372 vop_stdaccess(struct vop_access_args *ap)
375 KASSERT((ap->a_accmode & ~(VEXEC | VWRITE | VREAD | VADMIN |
376 VAPPEND)) == 0, ("invalid bit in accmode"));
378 return (VOP_ACCESSX(ap->a_vp, ap->a_accmode, ap->a_cred, ap->a_td));
382 vop_stdaccessx(struct vop_accessx_args *ap)
385 accmode_t accmode = ap->a_accmode;
387 error = vfs_unixify_accmode(&accmode);
394 return (VOP_ACCESS(ap->a_vp, accmode, ap->a_cred, ap->a_td));
398 * Advisory record locking support
401 vop_stdadvlock(struct vop_advlock_args *ap)
409 cred = curthread->td_ucred;
410 vn_lock(vp, LK_SHARED | LK_RETRY);
411 error = VOP_GETATTR(vp, &vattr, cred);
416 return (lf_advlock(ap, &(vp->v_lockf), vattr.va_size));
420 vop_stdadvlockasync(struct vop_advlockasync_args *ap)
428 cred = curthread->td_ucred;
429 vn_lock(vp, LK_SHARED | LK_RETRY);
430 error = VOP_GETATTR(vp, &vattr, cred);
435 return (lf_advlockasync(ap, &(vp->v_lockf), vattr.va_size));
439 vop_stdadvlockpurge(struct vop_advlockpurge_args *ap)
444 lf_purgelocks(vp, &vp->v_lockf);
451 * Standard implementation of POSIX pathconf, to get information about limits
453 * Override per filesystem for the case where the filesystem has smaller
458 struct vop_pathconf_args /* {
465 switch (ap->a_name) {
467 *ap->a_retval = NAME_MAX;
470 *ap->a_retval = PATH_MAX;
473 *ap->a_retval = LINK_MAX;
476 *ap->a_retval = MAX_CANON;
479 *ap->a_retval = MAX_INPUT;
482 *ap->a_retval = PIPE_BUF;
484 case _PC_CHOWN_RESTRICTED:
488 *ap->a_retval = _POSIX_VDISABLE;
497 * Standard lock, unlock and islocked functions.
501 struct vop_lock1_args /* {
508 struct vnode *vp = ap->a_vp;
510 return (_lockmgr_args(vp->v_vnlock, ap->a_flags, VI_MTX(vp),
511 LK_WMESG_DEFAULT, LK_PRIO_DEFAULT, LK_TIMO_DEFAULT, ap->a_file,
518 struct vop_unlock_args /* {
523 struct vnode *vp = ap->a_vp;
525 return (lockmgr(vp->v_vnlock, ap->a_flags | LK_RELEASE, VI_MTX(vp)));
531 struct vop_islocked_args /* {
536 return (lockstatus(ap->a_vp->v_vnlock));
540 * Return true for select/poll.
544 struct vop_poll_args /* {
547 struct ucred *a_cred;
552 return (poll_no_poll(ap->a_events));
556 * Implement poll for local filesystems that support it.
560 struct vop_poll_args /* {
563 struct ucred *a_cred;
567 if (ap->a_events & ~POLLSTANDARD)
568 return (vn_pollrecord(ap->a_vp, ap->a_td, ap->a_events));
569 return (ap->a_events & (POLLIN | POLLOUT | POLLRDNORM | POLLWRNORM));
573 * Return our mount point, as we will take charge of the writes.
576 vop_stdgetwritemount(ap)
577 struct vop_getwritemount_args /* {
579 struct mount **a_mpp;
585 * XXX Since this is called unlocked we may be recycled while
586 * attempting to ref the mount. If this is the case or mountpoint
587 * will be set to NULL. We only have to prevent this call from
588 * returning with a ref to an incorrect mountpoint. It is not
589 * harmful to return with a ref to our previous mountpoint.
591 mp = ap->a_vp->v_mount;
594 if (mp != ap->a_vp->v_mount) {
603 /* XXX Needs good comment and VOP_BMAP(9) manpage */
606 struct vop_bmap_args /* {
609 struct bufobj **a_bop;
616 if (ap->a_bop != NULL)
617 *ap->a_bop = &ap->a_vp->v_bufobj;
618 if (ap->a_bnp != NULL)
619 *ap->a_bnp = ap->a_bn * btodb(ap->a_vp->v_mount->mnt_stat.f_iosize);
620 if (ap->a_runp != NULL)
622 if (ap->a_runb != NULL)
629 struct vop_fsync_args /* {
631 struct ucred *a_cred;
636 struct vnode *vp = ap->a_vp;
641 int maxretry = 1000; /* large, arbitrarily chosen */
647 * MARK/SCAN initialization to avoid infinite loops.
649 TAILQ_FOREACH(bp, &bo->bo_dirty.bv_hd, b_bobufs) {
650 bp->b_vflags &= ~BV_SCANNED;
655 * Flush all dirty buffers associated with a vnode.
658 TAILQ_FOREACH_SAFE(bp, &bo->bo_dirty.bv_hd, b_bobufs, nbp) {
659 if ((bp->b_vflags & BV_SCANNED) != 0)
661 bp->b_vflags |= BV_SCANNED;
662 if (BUF_LOCK(bp, LK_EXCLUSIVE | LK_NOWAIT, NULL)) {
663 if (ap->a_waitfor != MNT_WAIT)
666 LK_EXCLUSIVE | LK_INTERLOCK | LK_SLEEPFAIL,
667 BO_LOCKPTR(bo)) != 0) {
674 KASSERT(bp->b_bufobj == bo,
675 ("bp %p wrong b_bufobj %p should be %p",
676 bp, bp->b_bufobj, bo));
677 if ((bp->b_flags & B_DELWRI) == 0)
678 panic("fsync: not dirty");
679 if ((vp->v_object != NULL) && (bp->b_flags & B_CLUSTEROK)) {
690 * If synchronous the caller expects us to completely resolve all
691 * dirty buffers in the system. Wait for in-progress I/O to
692 * complete (which could include background bitmap writes), then
693 * retry if dirty blocks still exist.
695 if (ap->a_waitfor == MNT_WAIT) {
696 bufobj_wwait(bo, 0, 0);
697 if (bo->bo_dirty.bv_cnt > 0) {
699 * If we are unable to write any of these buffers
700 * then we fail now rather than trying endlessly
703 TAILQ_FOREACH(bp, &bo->bo_dirty.bv_hd, b_bobufs)
704 if ((error = bp->b_error) == 0)
706 if (error == 0 && --maxretry >= 0)
713 vprint("fsync: giving up on dirty", vp);
718 /* XXX Needs good comment and more info in the manpage (VOP_GETPAGES(9)). */
721 struct vop_getpages_args /* {
729 return vnode_pager_generic_getpages(ap->a_vp, ap->a_m,
730 ap->a_count, ap->a_reqpage, NULL, NULL);
734 vop_stdgetpages_async(struct vop_getpages_async_args *ap)
738 error = VOP_GETPAGES(ap->a_vp, ap->a_m, ap->a_count, ap->a_reqpage);
739 ap->a_iodone(ap->a_arg, ap->a_m, ap->a_reqpage, error);
744 vop_stdkqfilter(struct vop_kqfilter_args *ap)
746 return vfs_kqfilter(ap);
749 /* XXX Needs good comment and more info in the manpage (VOP_PUTPAGES(9)). */
752 struct vop_putpages_args /* {
761 return vnode_pager_generic_putpages(ap->a_vp, ap->a_m, ap->a_count,
762 ap->a_sync, ap->a_rtvals);
766 vop_stdvptofh(struct vop_vptofh_args *ap)
772 vop_stdvptocnp(struct vop_vptocnp_args *ap)
774 struct vnode *vp = ap->a_vp;
775 struct vnode **dvp = ap->a_vpp;
776 struct ucred *cred = ap->a_cred;
777 char *buf = ap->a_buf;
778 int *buflen = ap->a_buflen;
780 int i, error, eofflag, dirbuflen, flags, locked, len, covered;
794 if (vp->v_type != VDIR)
797 error = VOP_GETATTR(vp, &va, cred);
802 locked = VOP_ISLOCKED(vp);
804 NDINIT_ATVP(&nd, LOOKUP, FOLLOW | LOCKLEAF, UIO_SYSSPACE,
807 error = vn_open_cred(&nd, &flags, 0, VN_OPEN_NOAUDIT, cred, NULL);
809 vn_lock(vp, locked | LK_RETRY);
812 NDFREE(&nd, NDF_ONLY_PNBUF);
814 mvp = *dvp = nd.ni_vp;
816 if (vp->v_mount != (*dvp)->v_mount &&
817 ((*dvp)->v_vflag & VV_ROOT) &&
818 ((*dvp)->v_mount->mnt_flag & MNT_UNION)) {
819 *dvp = (*dvp)->v_mount->mnt_vnodecovered;
822 vn_close(mvp, FREAD, cred, td);
824 vn_lock(*dvp, LK_EXCLUSIVE | LK_RETRY);
828 fileno = va.va_fileid;
830 dirbuflen = DEV_BSIZE;
831 if (dirbuflen < va.va_blocksize)
832 dirbuflen = va.va_blocksize;
833 dirbuf = (char *)malloc(dirbuflen, M_TEMP, M_WAITOK);
835 if ((*dvp)->v_type != VDIR) {
843 /* call VOP_READDIR of parent */
844 error = get_next_dirent(*dvp, &dp, dirbuf, dirbuflen, &off,
845 &cpos, &len, &eofflag, td);
849 if ((dp->d_type != DT_WHT) &&
850 (dp->d_fileno == fileno)) {
853 vn_lock(mvp, LK_EXCLUSIVE | LK_RETRY);
854 if (dirent_exists(mvp, dp->d_name, td)) {
857 vn_lock(*dvp, LK_EXCLUSIVE | LK_RETRY);
861 vn_lock(*dvp, LK_EXCLUSIVE | LK_RETRY);
869 if (dp->d_namlen == 1 && dp->d_name[0] == '.') {
872 bcopy(dp->d_name, buf + i, dp->d_namlen);
877 } while (len > 0 || !eofflag);
881 free(dirbuf, M_TEMP);
891 vn_close(mvp, FREAD, cred, td);
893 vn_lock(vp, locked | LK_RETRY);
898 vop_stdallocate(struct vop_allocate_args *ap)
904 struct vattr vattr, *vap;
906 off_t fsize, len, cur, offset;
919 offset = *ap->a_offset;
921 error = VOP_GETATTR(vp, vap, td->td_ucred);
924 fsize = vap->va_size;
925 iosize = vap->va_blocksize;
927 iosize = BLKDEV_IOSIZE;
928 if (iosize > MAXPHYS)
930 buf = malloc(iosize, M_TEMP, M_WAITOK);
934 * Check if the filesystem sets f_maxfilesize; if not use
935 * VOP_SETATTR to perform the check.
937 error = VFS_STATFS(vp->v_mount, &sfs, td);
940 if (sfs.f_maxfilesize) {
941 if (offset > sfs.f_maxfilesize || len > sfs.f_maxfilesize ||
942 offset + len > sfs.f_maxfilesize) {
948 if (offset + len > vap->va_size) {
950 * Test offset + len against the filesystem's maxfilesize.
953 vap->va_size = offset + len;
954 error = VOP_SETATTR(vp, vap, td->td_ucred);
958 vap->va_size = fsize;
959 error = VOP_SETATTR(vp, vap, td->td_ucred);
966 * Read and write back anything below the nominal file
967 * size. There's currently no way outside the filesystem
968 * to know whether this area is sparse or not.
971 if ((offset % iosize) != 0)
972 cur -= (offset % iosize);
975 if (offset < fsize) {
978 auio.uio_iov = &aiov;
980 auio.uio_offset = offset;
981 auio.uio_resid = cur;
982 auio.uio_segflg = UIO_SYSSPACE;
983 auio.uio_rw = UIO_READ;
985 error = VOP_READ(vp, &auio, 0, td->td_ucred);
988 if (auio.uio_resid > 0) {
989 bzero(buf + cur - auio.uio_resid,
998 auio.uio_iov = &aiov;
1000 auio.uio_offset = offset;
1001 auio.uio_resid = cur;
1002 auio.uio_segflg = UIO_SYSSPACE;
1003 auio.uio_rw = UIO_WRITE;
1006 error = VOP_WRITE(vp, &auio, 0, td->td_ucred);
1020 *ap->a_offset = offset;
1026 vop_stdadvise(struct vop_advise_args *ap)
1033 switch (ap->a_advice) {
1034 case POSIX_FADV_WILLNEED:
1036 * Do nothing for now. Filesystems should provide a
1037 * custom method which starts an asynchronous read of
1038 * the requested region.
1042 case POSIX_FADV_DONTNEED:
1044 * Flush any open FS buffers and then remove pages
1045 * from the backing VM object. Using vinvalbuf() here
1046 * is a bit heavy-handed as it flushes all buffers for
1047 * the given vnode, not just the buffers covering the
1051 vn_lock(vp, LK_EXCLUSIVE | LK_RETRY);
1052 if (vp->v_iflag & VI_DOOMED) {
1056 vinvalbuf(vp, V_CLEANONLY, 0, 0);
1057 if (vp->v_object != NULL) {
1058 start = trunc_page(ap->a_start);
1059 end = round_page(ap->a_end);
1060 VM_OBJECT_WLOCK(vp->v_object);
1061 vm_object_page_cache(vp->v_object, OFF_TO_IDX(start),
1063 VM_OBJECT_WUNLOCK(vp->v_object);
1075 vop_stdunp_bind(struct vop_unp_bind_args *ap)
1078 ap->a_vp->v_socket = ap->a_socket;
1083 vop_stdunp_connect(struct vop_unp_connect_args *ap)
1086 *ap->a_socket = ap->a_vp->v_socket;
1091 vop_stdunp_detach(struct vop_unp_detach_args *ap)
1094 ap->a_vp->v_socket = NULL;
1099 vop_stdis_text(struct vop_is_text_args *ap)
1102 return ((ap->a_vp->v_vflag & VV_TEXT) != 0);
1106 vop_stdset_text(struct vop_set_text_args *ap)
1109 ap->a_vp->v_vflag |= VV_TEXT;
1114 vop_stdunset_text(struct vop_unset_text_args *ap)
1117 ap->a_vp->v_vflag &= ~VV_TEXT;
1122 vop_stdget_writecount(struct vop_get_writecount_args *ap)
1125 *ap->a_writecount = ap->a_vp->v_writecount;
1130 vop_stdadd_writecount(struct vop_add_writecount_args *ap)
1133 ap->a_vp->v_writecount += ap->a_inc;
1139 * used to fill the vfs function table to get reasonable default return values.
1142 vfs_stdroot (mp, flags, vpp)
1148 return (EOPNOTSUPP);
1152 vfs_stdstatfs (mp, sbp)
1157 return (EOPNOTSUPP);
1161 vfs_stdquotactl (mp, cmds, uid, arg)
1168 return (EOPNOTSUPP);
1172 vfs_stdsync(mp, waitfor)
1176 struct vnode *vp, *mvp;
1178 int error, lockreq, allerror = 0;
1181 lockreq = LK_EXCLUSIVE | LK_INTERLOCK;
1182 if (waitfor != MNT_WAIT)
1183 lockreq |= LK_NOWAIT;
1185 * Force stale buffer cache information to be flushed.
1188 MNT_VNODE_FOREACH_ALL(vp, mp, mvp) {
1189 if (vp->v_bufobj.bo_dirty.bv_cnt == 0) {
1193 if ((error = vget(vp, lockreq, td)) != 0) {
1194 if (error == ENOENT) {
1195 MNT_VNODE_FOREACH_ALL_ABORT(mp, mvp);
1200 error = VOP_FSYNC(vp, waitfor, td);
1209 vfs_stdnosync (mp, waitfor)
1218 vfs_stdvget (mp, ino, flags, vpp)
1225 return (EOPNOTSUPP);
1229 vfs_stdfhtovp (mp, fhp, flags, vpp)
1236 return (EOPNOTSUPP);
1241 struct vfsconf *vfsp;
1248 vfs_stduninit (vfsp)
1249 struct vfsconf *vfsp;
1256 vfs_stdextattrctl(mp, cmd, filename_vp, attrnamespace, attrname)
1259 struct vnode *filename_vp;
1261 const char *attrname;
1264 if (filename_vp != NULL)
1265 VOP_UNLOCK(filename_vp, 0);
1266 return (EOPNOTSUPP);
1270 vfs_stdsysctl(mp, op, req)
1273 struct sysctl_req *req;
1276 return (EOPNOTSUPP);
1279 /* end of vfs default ops */