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)
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) &&
358 !strcmp(dp->d_name, dirname)) {
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 /* {
638 struct ucred *a_cred;
643 struct vnode *vp = ap->a_vp;
648 int maxretry = 1000; /* large, arbitrarily chosen */
654 * MARK/SCAN initialization to avoid infinite loops.
656 TAILQ_FOREACH(bp, &bo->bo_dirty.bv_hd, b_bobufs) {
657 bp->b_vflags &= ~BV_SCANNED;
662 * Flush all dirty buffers associated with a vnode.
665 TAILQ_FOREACH_SAFE(bp, &bo->bo_dirty.bv_hd, b_bobufs, nbp) {
666 if ((bp->b_vflags & BV_SCANNED) != 0)
668 bp->b_vflags |= BV_SCANNED;
669 if (BUF_LOCK(bp, LK_EXCLUSIVE | LK_NOWAIT, NULL)) {
670 if (ap->a_waitfor != MNT_WAIT)
673 LK_EXCLUSIVE | LK_INTERLOCK | LK_SLEEPFAIL,
681 KASSERT(bp->b_bufobj == bo,
682 ("bp %p wrong b_bufobj %p should be %p",
683 bp, bp->b_bufobj, bo));
684 if ((bp->b_flags & B_DELWRI) == 0)
685 panic("fsync: not dirty");
686 if ((vp->v_object != NULL) && (bp->b_flags & B_CLUSTEROK)) {
697 * If synchronous the caller expects us to completely resolve all
698 * dirty buffers in the system. Wait for in-progress I/O to
699 * complete (which could include background bitmap writes), then
700 * retry if dirty blocks still exist.
702 if (ap->a_waitfor == MNT_WAIT) {
703 bufobj_wwait(bo, 0, 0);
704 if (bo->bo_dirty.bv_cnt > 0) {
706 * If we are unable to write any of these buffers
707 * then we fail now rather than trying endlessly
710 TAILQ_FOREACH(bp, &bo->bo_dirty.bv_hd, b_bobufs)
711 if ((error = bp->b_error) == 0)
713 if (error == 0 && --maxretry >= 0)
720 vprint("fsync: giving up on dirty", vp);
725 /* XXX Needs good comment and more info in the manpage (VOP_GETPAGES(9)). */
728 struct vop_getpages_args /* {
733 vm_ooffset_t a_offset;
737 return vnode_pager_generic_getpages(ap->a_vp, ap->a_m,
738 ap->a_count, ap->a_reqpage);
742 vop_stdkqfilter(struct vop_kqfilter_args *ap)
744 return vfs_kqfilter(ap);
747 /* XXX Needs good comment and more info in the manpage (VOP_PUTPAGES(9)). */
750 struct vop_putpages_args /* {
756 vm_ooffset_t a_offset;
760 return vnode_pager_generic_putpages(ap->a_vp, ap->a_m, ap->a_count,
761 ap->a_sync, ap->a_rtvals);
765 vop_stdvptofh(struct vop_vptofh_args *ap)
771 vop_stdvptocnp(struct vop_vptocnp_args *ap)
773 struct vnode *vp = ap->a_vp;
774 struct vnode **dvp = ap->a_vpp;
775 struct ucred *cred = ap->a_cred;
776 char *buf = ap->a_buf;
777 int *buflen = ap->a_buflen;
779 int i, error, eofflag, dirbuflen, flags, locked, len, covered;
793 if (vp->v_type != VDIR)
796 error = VOP_GETATTR(vp, &va, cred);
801 locked = VOP_ISLOCKED(vp);
803 NDINIT_ATVP(&nd, LOOKUP, FOLLOW | LOCKLEAF, UIO_SYSSPACE,
806 error = vn_open_cred(&nd, &flags, 0, VN_OPEN_NOAUDIT, cred, NULL);
808 vn_lock(vp, locked | LK_RETRY);
811 NDFREE(&nd, NDF_ONLY_PNBUF);
813 mvp = *dvp = nd.ni_vp;
815 if (vp->v_mount != (*dvp)->v_mount &&
816 ((*dvp)->v_vflag & VV_ROOT) &&
817 ((*dvp)->v_mount->mnt_flag & MNT_UNION)) {
818 *dvp = (*dvp)->v_mount->mnt_vnodecovered;
821 vn_close(mvp, FREAD, cred, td);
823 vn_lock(*dvp, LK_EXCLUSIVE | LK_RETRY);
827 fileno = va.va_fileid;
829 dirbuflen = DEV_BSIZE;
830 if (dirbuflen < va.va_blocksize)
831 dirbuflen = va.va_blocksize;
832 dirbuf = (char *)malloc(dirbuflen, M_TEMP, M_WAITOK);
834 if ((*dvp)->v_type != VDIR) {
842 /* call VOP_READDIR of parent */
843 error = get_next_dirent(*dvp, &dp, dirbuf, dirbuflen, &off,
844 &cpos, &len, &eofflag, td);
848 if ((dp->d_type != DT_WHT) &&
849 (dp->d_fileno == fileno)) {
852 vn_lock(mvp, LK_EXCLUSIVE | LK_RETRY);
853 if (dirent_exists(mvp, dp->d_name, td)) {
856 vn_lock(*dvp, LK_EXCLUSIVE | LK_RETRY);
860 vn_lock(*dvp, LK_EXCLUSIVE | LK_RETRY);
868 if (dp->d_namlen == 1 && dp->d_name[0] == '.') {
871 bcopy(dp->d_name, buf + i, dp->d_namlen);
876 } while (len > 0 || !eofflag);
880 free(dirbuf, M_TEMP);
890 vn_close(mvp, FREAD, cred, td);
892 vn_lock(vp, locked | LK_RETRY);
897 vop_stdallocate(struct vop_allocate_args *ap)
903 struct vattr vattr, *vap;
905 off_t fsize, len, cur, offset;
918 offset = *ap->a_offset;
920 error = VOP_GETATTR(vp, vap, td->td_ucred);
923 fsize = vap->va_size;
924 iosize = vap->va_blocksize;
926 iosize = BLKDEV_IOSIZE;
927 if (iosize > MAXPHYS)
929 buf = malloc(iosize, M_TEMP, M_WAITOK);
933 * Check if the filesystem sets f_maxfilesize; if not use
934 * VOP_SETATTR to perform the check.
936 error = VFS_STATFS(vp->v_mount, &sfs, td);
939 if (sfs.f_maxfilesize) {
940 if (offset > sfs.f_maxfilesize || len > sfs.f_maxfilesize ||
941 offset + len > sfs.f_maxfilesize) {
947 if (offset + len > vap->va_size) {
949 * Test offset + len against the filesystem's maxfilesize.
952 vap->va_size = offset + len;
953 error = VOP_SETATTR(vp, vap, td->td_ucred);
957 vap->va_size = fsize;
958 error = VOP_SETATTR(vp, vap, td->td_ucred);
965 * Read and write back anything below the nominal file
966 * size. There's currently no way outside the filesystem
967 * to know whether this area is sparse or not.
970 if ((offset % iosize) != 0)
971 cur -= (offset % iosize);
974 if (offset < fsize) {
977 auio.uio_iov = &aiov;
979 auio.uio_offset = offset;
980 auio.uio_resid = cur;
981 auio.uio_segflg = UIO_SYSSPACE;
982 auio.uio_rw = UIO_READ;
984 error = VOP_READ(vp, &auio, 0, td->td_ucred);
987 if (auio.uio_resid > 0) {
988 bzero(buf + cur - auio.uio_resid,
997 auio.uio_iov = &aiov;
999 auio.uio_offset = offset;
1000 auio.uio_resid = cur;
1001 auio.uio_segflg = UIO_SYSSPACE;
1002 auio.uio_rw = UIO_WRITE;
1005 error = VOP_WRITE(vp, &auio, 0, td->td_ucred);
1019 *ap->a_offset = offset;
1025 vop_stdadvise(struct vop_advise_args *ap)
1029 int error, vfslocked;
1032 switch (ap->a_advice) {
1033 case POSIX_FADV_WILLNEED:
1035 * Do nothing for now. Filesystems should provide a
1036 * custom method which starts an asynchronous read of
1037 * the requested region.
1041 case POSIX_FADV_DONTNEED:
1043 * Flush any open FS buffers and then remove pages
1044 * from the backing VM object. Using vinvalbuf() here
1045 * is a bit heavy-handed as it flushes all buffers for
1046 * the given vnode, not just the buffers covering the
1050 vfslocked = VFS_LOCK_GIANT(vp->v_mount);
1051 vn_lock(vp, LK_EXCLUSIVE | LK_RETRY);
1052 if (vp->v_iflag & VI_DOOMED) {
1054 VFS_UNLOCK_GIANT(vfslocked);
1057 vinvalbuf(vp, V_CLEANONLY, 0, 0);
1058 if (vp->v_object != NULL) {
1059 start = trunc_page(ap->a_start);
1060 end = round_page(ap->a_end);
1061 VM_OBJECT_LOCK(vp->v_object);
1062 vm_object_page_cache(vp->v_object, OFF_TO_IDX(start),
1064 VM_OBJECT_UNLOCK(vp->v_object);
1067 VFS_UNLOCK_GIANT(vfslocked);
1077 vop_stdunp_bind(struct vop_unp_bind_args *ap)
1080 ap->a_vp->v_socket = ap->a_socket;
1085 vop_stdunp_connect(struct vop_unp_connect_args *ap)
1088 *ap->a_socket = ap->a_vp->v_socket;
1093 vop_stdunp_detach(struct vop_unp_detach_args *ap)
1096 ap->a_vp->v_socket = NULL;
1101 vop_stdis_text(struct vop_is_text_args *ap)
1104 return ((ap->a_vp->v_vflag & VV_TEXT) != 0);
1108 vop_stdset_text(struct vop_set_text_args *ap)
1111 ap->a_vp->v_vflag |= VV_TEXT;
1116 vop_stdunset_text(struct vop_unset_text_args *ap)
1119 ap->a_vp->v_vflag &= ~VV_TEXT;
1124 vop_stdget_writecount(struct vop_get_writecount_args *ap)
1127 *ap->a_writecount = ap->a_vp->v_writecount;
1132 vop_stdadd_writecount(struct vop_add_writecount_args *ap)
1135 ap->a_vp->v_writecount += ap->a_inc;
1141 * used to fill the vfs function table to get reasonable default return values.
1144 vfs_stdroot (mp, flags, vpp)
1150 return (EOPNOTSUPP);
1154 vfs_stdstatfs (mp, sbp)
1159 return (EOPNOTSUPP);
1163 vfs_stdquotactl (mp, cmds, uid, arg)
1170 return (EOPNOTSUPP);
1174 vfs_stdsync(mp, waitfor)
1178 struct vnode *vp, *mvp;
1180 int error, lockreq, allerror = 0;
1183 lockreq = LK_EXCLUSIVE | LK_INTERLOCK;
1184 if (waitfor != MNT_WAIT)
1185 lockreq |= LK_NOWAIT;
1187 * Force stale buffer cache information to be flushed.
1190 MNT_VNODE_FOREACH_ALL(vp, mp, mvp) {
1191 if (vp->v_bufobj.bo_dirty.bv_cnt == 0) {
1195 if ((error = vget(vp, lockreq, td)) != 0) {
1196 if (error == ENOENT) {
1197 MNT_VNODE_FOREACH_ALL_ABORT(mp, mvp);
1202 error = VOP_FSYNC(vp, waitfor, td);
1211 vfs_stdnosync (mp, waitfor)
1220 vfs_stdvget (mp, ino, flags, vpp)
1227 return (EOPNOTSUPP);
1231 vfs_stdfhtovp (mp, fhp, flags, vpp)
1238 return (EOPNOTSUPP);
1243 struct vfsconf *vfsp;
1250 vfs_stduninit (vfsp)
1251 struct vfsconf *vfsp;
1258 vfs_stdextattrctl(mp, cmd, filename_vp, attrnamespace, attrname)
1261 struct vnode *filename_vp;
1263 const char *attrname;
1266 if (filename_vp != NULL)
1267 VOP_UNLOCK(filename_vp, 0);
1268 return (EOPNOTSUPP);
1272 vfs_stdsysctl(mp, op, req)
1275 struct sysctl_req *req;
1278 return (EOPNOTSUPP);
1281 /* end of vfs default ops */