2 * SPDX-License-Identifier: BSD-3-Clause
4 * Copyright (c) 1989, 1993
5 * The Regents of the University of California. All rights reserved.
7 * This code is derived from software contributed
8 * to Berkeley by John Heidemann of the UCLA Ficus project.
10 * Source: * @(#)i405_init.c 2.10 92/04/27 UCLA Ficus project
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
15 * 1. Redistributions of source code must retain the above copyright
16 * notice, this list of conditions and the following disclaimer.
17 * 2. Redistributions in binary form must reproduce the above copyright
18 * notice, this list of conditions and the following disclaimer in the
19 * documentation and/or other materials provided with the distribution.
20 * 3. Neither the name of the University nor the names of its contributors
21 * may be used to endorse or promote products derived from this software
22 * without specific prior written permission.
24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
37 #include <sys/cdefs.h>
38 __FBSDID("$FreeBSD$");
40 #include <sys/param.h>
41 #include <sys/systm.h>
45 #include <sys/event.h>
46 #include <sys/kernel.h>
47 #include <sys/limits.h>
49 #include <sys/lockf.h>
50 #include <sys/malloc.h>
51 #include <sys/mount.h>
52 #include <sys/namei.h>
53 #include <sys/rwlock.h>
54 #include <sys/fcntl.h>
55 #include <sys/unistd.h>
56 #include <sys/vnode.h>
57 #include <sys/dirent.h>
60 #include <security/mac/mac_framework.h>
63 #include <vm/vm_object.h>
64 #include <vm/vm_extern.h>
66 #include <vm/vm_map.h>
67 #include <vm/vm_page.h>
68 #include <vm/vm_pager.h>
69 #include <vm/vnode_pager.h>
71 static int vop_nolookup(struct vop_lookup_args *);
72 static int vop_norename(struct vop_rename_args *);
73 static int vop_nostrategy(struct vop_strategy_args *);
74 static int get_next_dirent(struct vnode *vp, struct dirent **dpp,
75 char *dirbuf, int dirbuflen, off_t *off,
76 char **cpos, int *len, int *eofflag,
78 static int dirent_exists(struct vnode *vp, const char *dirname,
81 #define DIRENT_MINSIZE (sizeof(struct dirent) - (MAXNAMLEN+1) + 4)
83 static int vop_stdis_text(struct vop_is_text_args *ap);
84 static int vop_stdset_text(struct vop_set_text_args *ap);
85 static int vop_stdunset_text(struct vop_unset_text_args *ap);
86 static int vop_stdget_writecount(struct vop_get_writecount_args *ap);
87 static int vop_stdadd_writecount(struct vop_add_writecount_args *ap);
88 static int vop_stdfdatasync(struct vop_fdatasync_args *ap);
89 static int vop_stdgetpages_async(struct vop_getpages_async_args *ap);
92 * This vnode table stores what we want to do if the filesystem doesn't
93 * implement a particular VOP.
95 * If there is no specific entry here, we will return EOPNOTSUPP.
97 * Note that every filesystem has to implement either vop_access
98 * or vop_accessx; failing to do so will result in immediate crash
99 * due to stack overflow, as vop_stdaccess() calls vop_stdaccessx(),
100 * which calls vop_stdaccess() etc.
103 struct vop_vector default_vnodeops = {
105 .vop_bypass = VOP_EOPNOTSUPP,
107 .vop_access = vop_stdaccess,
108 .vop_accessx = vop_stdaccessx,
109 .vop_advise = vop_stdadvise,
110 .vop_advlock = vop_stdadvlock,
111 .vop_advlockasync = vop_stdadvlockasync,
112 .vop_advlockpurge = vop_stdadvlockpurge,
113 .vop_allocate = vop_stdallocate,
114 .vop_bmap = vop_stdbmap,
115 .vop_close = VOP_NULL,
116 .vop_fsync = VOP_NULL,
117 .vop_fdatasync = vop_stdfdatasync,
118 .vop_getpages = vop_stdgetpages,
119 .vop_getpages_async = vop_stdgetpages_async,
120 .vop_getwritemount = vop_stdgetwritemount,
121 .vop_inactive = VOP_NULL,
122 .vop_ioctl = VOP_ENOTTY,
123 .vop_kqfilter = vop_stdkqfilter,
124 .vop_islocked = vop_stdislocked,
125 .vop_lock1 = vop_stdlock,
126 .vop_lookup = vop_nolookup,
127 .vop_open = VOP_NULL,
128 .vop_pathconf = VOP_EINVAL,
129 .vop_poll = vop_nopoll,
130 .vop_putpages = vop_stdputpages,
131 .vop_readlink = VOP_EINVAL,
132 .vop_rename = vop_norename,
133 .vop_revoke = VOP_PANIC,
134 .vop_strategy = vop_nostrategy,
135 .vop_unlock = vop_stdunlock,
136 .vop_vptocnp = vop_stdvptocnp,
137 .vop_vptofh = vop_stdvptofh,
138 .vop_unp_bind = vop_stdunp_bind,
139 .vop_unp_connect = vop_stdunp_connect,
140 .vop_unp_detach = vop_stdunp_detach,
141 .vop_is_text = vop_stdis_text,
142 .vop_set_text = vop_stdset_text,
143 .vop_unset_text = vop_stdunset_text,
144 .vop_get_writecount = vop_stdget_writecount,
145 .vop_add_writecount = vop_stdadd_writecount,
149 * Series of placeholder functions for various error returns for
154 vop_eopnotsupp(struct vop_generic_args *ap)
157 printf("vop_notsupp[%s]\n", ap->a_desc->vdesc_name);
164 vop_ebadf(struct vop_generic_args *ap)
171 vop_enotty(struct vop_generic_args *ap)
178 vop_einval(struct vop_generic_args *ap)
185 vop_enoent(struct vop_generic_args *ap)
192 vop_null(struct vop_generic_args *ap)
199 * Helper function to panic on some bad VOPs in some filesystems.
202 vop_panic(struct vop_generic_args *ap)
205 panic("filesystem goof: vop_panic[%s]", ap->a_desc->vdesc_name);
209 * vop_std<something> and vop_no<something> are default functions for use by
210 * filesystems that need the "default reasonable" implementation for a
211 * particular operation.
213 * The documentation for the operations they implement exists (if it exists)
214 * in the VOP_<SOMETHING>(9) manpage (all uppercase).
218 * Default vop for filesystems that do not support name lookup
222 struct vop_lookup_args /* {
224 struct vnode **a_vpp;
225 struct componentname *a_cnp;
236 * Handle unlock and reference counting for arguments of vop_rename
237 * for filesystems that do not implement rename operation.
240 vop_norename(struct vop_rename_args *ap)
250 * Strategy routine for VFS devices that have none.
252 * BIO_ERROR and B_INVAL must be cleared prior to calling any strategy
253 * routine. Typically this is done for a BIO_READ strategy call.
254 * Typically B_INVAL is assumed to already be clear prior to a write
255 * and should not be cleared manually unless you just made the buffer
256 * invalid. BIO_ERROR should be cleared either way.
260 vop_nostrategy (struct vop_strategy_args *ap)
262 printf("No strategy for buffer at %p\n", ap->a_bp);
263 vn_printf(ap->a_vp, "vnode ");
264 ap->a_bp->b_ioflags |= BIO_ERROR;
265 ap->a_bp->b_error = EOPNOTSUPP;
271 get_next_dirent(struct vnode *vp, struct dirent **dpp, char *dirbuf,
272 int dirbuflen, off_t *off, char **cpos, int *len,
273 int *eofflag, struct thread *td)
280 KASSERT(VOP_ISLOCKED(vp), ("vp %p is not locked", vp));
281 KASSERT(vp->v_type == VDIR, ("vp %p is not a directory", vp));
284 iov.iov_base = dirbuf;
285 iov.iov_len = dirbuflen;
289 uio.uio_offset = *off;
290 uio.uio_resid = dirbuflen;
291 uio.uio_segflg = UIO_SYSSPACE;
292 uio.uio_rw = UIO_READ;
298 error = mac_vnode_check_readdir(td->td_ucred, vp);
301 error = VOP_READDIR(vp, &uio, td->td_ucred, eofflag,
306 *off = uio.uio_offset;
309 *len = (dirbuflen - uio.uio_resid);
315 dp = (struct dirent *)(*cpos);
316 reclen = dp->d_reclen;
319 /* check for malformed directory.. */
320 if (reclen < DIRENT_MINSIZE)
330 * Check if a named file exists in a given directory vnode.
333 dirent_exists(struct vnode *vp, const char *dirname, struct thread *td)
336 int error, eofflag, dirbuflen, len, found;
341 KASSERT(VOP_ISLOCKED(vp), ("vp %p is not locked", vp));
342 KASSERT(vp->v_type == VDIR, ("vp %p is not a directory", vp));
346 error = VOP_GETATTR(vp, &va, td->td_ucred);
350 dirbuflen = DEV_BSIZE;
351 if (dirbuflen < va.va_blocksize)
352 dirbuflen = va.va_blocksize;
353 dirbuf = (char *)malloc(dirbuflen, M_TEMP, M_WAITOK);
358 error = get_next_dirent(vp, &dp, dirbuf, dirbuflen, &off,
359 &cpos, &len, &eofflag, td);
363 if (dp->d_type != DT_WHT && dp->d_fileno != 0 &&
364 strcmp(dp->d_name, dirname) == 0) {
368 } while (len > 0 || !eofflag);
371 free(dirbuf, M_TEMP);
376 vop_stdaccess(struct vop_access_args *ap)
379 KASSERT((ap->a_accmode & ~(VEXEC | VWRITE | VREAD | VADMIN |
380 VAPPEND)) == 0, ("invalid bit in accmode"));
382 return (VOP_ACCESSX(ap->a_vp, ap->a_accmode, ap->a_cred, ap->a_td));
386 vop_stdaccessx(struct vop_accessx_args *ap)
389 accmode_t accmode = ap->a_accmode;
391 error = vfs_unixify_accmode(&accmode);
398 return (VOP_ACCESS(ap->a_vp, accmode, ap->a_cred, ap->a_td));
402 * Advisory record locking support
405 vop_stdadvlock(struct vop_advlock_args *ap)
412 if (ap->a_fl->l_whence == SEEK_END) {
414 * The NFSv4 server must avoid doing a vn_lock() here, since it
415 * can deadlock the nfsd threads, due to a LOR. Fortunately
416 * the NFSv4 server always uses SEEK_SET and this code is
417 * only required for the SEEK_END case.
419 vn_lock(vp, LK_SHARED | LK_RETRY);
420 error = VOP_GETATTR(vp, &vattr, curthread->td_ucred);
427 return (lf_advlock(ap, &(vp->v_lockf), vattr.va_size));
431 vop_stdadvlockasync(struct vop_advlockasync_args *ap)
438 if (ap->a_fl->l_whence == SEEK_END) {
439 /* The size argument is only needed for SEEK_END. */
440 vn_lock(vp, LK_SHARED | LK_RETRY);
441 error = VOP_GETATTR(vp, &vattr, curthread->td_ucred);
448 return (lf_advlockasync(ap, &(vp->v_lockf), vattr.va_size));
452 vop_stdadvlockpurge(struct vop_advlockpurge_args *ap)
457 lf_purgelocks(vp, &vp->v_lockf);
464 * Standard implementation of POSIX pathconf, to get information about limits
466 * Override per filesystem for the case where the filesystem has smaller
471 struct vop_pathconf_args /* {
478 switch (ap->a_name) {
480 *ap->a_retval = _POSIX_ASYNCHRONOUS_IO;
483 *ap->a_retval = PATH_MAX;
492 * Standard lock, unlock and islocked functions.
496 struct vop_lock1_args /* {
503 struct vnode *vp = ap->a_vp;
507 return (lockmgr_lock_fast_path(vp->v_vnlock, ap->a_flags,
508 &ilk->lock_object, ap->a_file, ap->a_line));
514 struct vop_unlock_args /* {
519 struct vnode *vp = ap->a_vp;
523 return (lockmgr_unlock_fast_path(vp->v_vnlock, ap->a_flags,
530 struct vop_islocked_args /* {
535 return (lockstatus(ap->a_vp->v_vnlock));
539 * Return true for select/poll.
543 struct vop_poll_args /* {
546 struct ucred *a_cred;
551 return (poll_no_poll(ap->a_events));
555 * Implement poll for local filesystems that support it.
559 struct vop_poll_args /* {
562 struct ucred *a_cred;
566 if (ap->a_events & ~POLLSTANDARD)
567 return (vn_pollrecord(ap->a_vp, ap->a_td, ap->a_events));
568 return (ap->a_events & (POLLIN | POLLOUT | POLLRDNORM | POLLWRNORM));
572 * Return our mount point, as we will take charge of the writes.
575 vop_stdgetwritemount(ap)
576 struct vop_getwritemount_args /* {
578 struct mount **a_mpp;
584 * XXX Since this is called unlocked we may be recycled while
585 * attempting to ref the mount. If this is the case or mountpoint
586 * will be set to NULL. We only have to prevent this call from
587 * returning with a ref to an incorrect mountpoint. It is not
588 * harmful to return with a ref to our previous mountpoint.
590 mp = ap->a_vp->v_mount;
593 if (mp != ap->a_vp->v_mount) {
602 /* XXX Needs good comment and VOP_BMAP(9) manpage */
605 struct vop_bmap_args /* {
608 struct bufobj **a_bop;
615 if (ap->a_bop != NULL)
616 *ap->a_bop = &ap->a_vp->v_bufobj;
617 if (ap->a_bnp != NULL)
618 *ap->a_bnp = ap->a_bn * btodb(ap->a_vp->v_mount->mnt_stat.f_iosize);
619 if (ap->a_runp != NULL)
621 if (ap->a_runb != NULL)
628 struct vop_fsync_args /* {
635 struct buf *bp, *nbp;
641 maxretry = 10000; /* large, arbitrarily chosen */
644 if (vp->v_type == VCHR) {
646 mp = vp->v_rdev->si_mountpt;
653 * MARK/SCAN initialization to avoid infinite loops.
655 TAILQ_FOREACH(bp, &bo->bo_dirty.bv_hd, b_bobufs) {
656 bp->b_vflags &= ~BV_SCANNED;
661 * Flush all dirty buffers associated with a vnode.
664 TAILQ_FOREACH_SAFE(bp, &bo->bo_dirty.bv_hd, b_bobufs, nbp) {
665 if ((bp->b_vflags & BV_SCANNED) != 0)
667 bp->b_vflags |= BV_SCANNED;
668 if (BUF_LOCK(bp, LK_EXCLUSIVE | LK_NOWAIT, NULL)) {
669 if (ap->a_waitfor != MNT_WAIT)
672 LK_EXCLUSIVE | LK_INTERLOCK | LK_SLEEPFAIL,
673 BO_LOCKPTR(bo)) != 0) {
680 KASSERT(bp->b_bufobj == bo,
681 ("bp %p wrong b_bufobj %p should be %p",
682 bp, bp->b_bufobj, bo));
683 if ((bp->b_flags & B_DELWRI) == 0)
684 panic("fsync: not dirty");
685 if ((vp->v_object != NULL) && (bp->b_flags & B_CLUSTEROK)) {
692 pause("dirty", hz < 1000 ? 1 : hz / 1000);
698 * If synchronous the caller expects us to completely resolve all
699 * dirty buffers in the system. Wait for in-progress I/O to
700 * complete (which could include background bitmap writes), then
701 * retry if dirty blocks still exist.
703 if (ap->a_waitfor == MNT_WAIT) {
704 bufobj_wwait(bo, 0, 0);
705 if (bo->bo_dirty.bv_cnt > 0) {
707 * If we are unable to write any of these buffers
708 * then we fail now rather than trying endlessly
711 TAILQ_FOREACH(bp, &bo->bo_dirty.bv_hd, b_bobufs)
712 if ((error = bp->b_error) != 0)
714 if ((mp != NULL && mp->mnt_secondary_writes > 0) ||
715 (error == 0 && --maxretry >= 0))
723 vn_printf(vp, "fsync: giving up on dirty (error = %d) ", error);
729 vop_stdfdatasync(struct vop_fdatasync_args *ap)
732 return (VOP_FSYNC(ap->a_vp, MNT_WAIT, ap->a_td));
736 vop_stdfdatasync_buf(struct vop_fdatasync_args *ap)
738 struct vop_fsync_args apf;
741 apf.a_waitfor = MNT_WAIT;
743 return (vop_stdfsync(&apf));
746 /* XXX Needs good comment and more info in the manpage (VOP_GETPAGES(9)). */
749 struct vop_getpages_args /* {
758 return vnode_pager_generic_getpages(ap->a_vp, ap->a_m,
759 ap->a_count, ap->a_rbehind, ap->a_rahead, NULL, NULL);
763 vop_stdgetpages_async(struct vop_getpages_async_args *ap)
767 error = VOP_GETPAGES(ap->a_vp, ap->a_m, ap->a_count, ap->a_rbehind,
769 ap->a_iodone(ap->a_arg, ap->a_m, ap->a_count, error);
774 vop_stdkqfilter(struct vop_kqfilter_args *ap)
776 return vfs_kqfilter(ap);
779 /* XXX Needs good comment and more info in the manpage (VOP_PUTPAGES(9)). */
782 struct vop_putpages_args /* {
791 return vnode_pager_generic_putpages(ap->a_vp, ap->a_m, ap->a_count,
792 ap->a_sync, ap->a_rtvals);
796 vop_stdvptofh(struct vop_vptofh_args *ap)
802 vop_stdvptocnp(struct vop_vptocnp_args *ap)
804 struct vnode *vp = ap->a_vp;
805 struct vnode **dvp = ap->a_vpp;
806 struct ucred *cred = ap->a_cred;
807 char *buf = ap->a_buf;
808 int *buflen = ap->a_buflen;
810 int i, error, eofflag, dirbuflen, flags, locked, len, covered;
824 if (vp->v_type != VDIR)
827 error = VOP_GETATTR(vp, &va, cred);
832 locked = VOP_ISLOCKED(vp);
834 NDINIT_ATVP(&nd, LOOKUP, FOLLOW | LOCKSHARED | LOCKLEAF, UIO_SYSSPACE,
837 error = vn_open_cred(&nd, &flags, 0, VN_OPEN_NOAUDIT, cred, NULL);
839 vn_lock(vp, locked | LK_RETRY);
842 NDFREE(&nd, NDF_ONLY_PNBUF);
844 mvp = *dvp = nd.ni_vp;
846 if (vp->v_mount != (*dvp)->v_mount &&
847 ((*dvp)->v_vflag & VV_ROOT) &&
848 ((*dvp)->v_mount->mnt_flag & MNT_UNION)) {
849 *dvp = (*dvp)->v_mount->mnt_vnodecovered;
852 vn_close(mvp, FREAD, cred, td);
854 vn_lock(*dvp, LK_SHARED | LK_RETRY);
858 fileno = va.va_fileid;
860 dirbuflen = DEV_BSIZE;
861 if (dirbuflen < va.va_blocksize)
862 dirbuflen = va.va_blocksize;
863 dirbuf = (char *)malloc(dirbuflen, M_TEMP, M_WAITOK);
865 if ((*dvp)->v_type != VDIR) {
873 /* call VOP_READDIR of parent */
874 error = get_next_dirent(*dvp, &dp, dirbuf, dirbuflen, &off,
875 &cpos, &len, &eofflag, td);
879 if ((dp->d_type != DT_WHT) &&
880 (dp->d_fileno == fileno)) {
883 vn_lock(mvp, LK_SHARED | LK_RETRY);
884 if (dirent_exists(mvp, dp->d_name, td)) {
887 vn_lock(*dvp, LK_SHARED | LK_RETRY);
891 vn_lock(*dvp, LK_SHARED | LK_RETRY);
899 if (dp->d_namlen == 1 && dp->d_name[0] == '.') {
902 bcopy(dp->d_name, buf + i, dp->d_namlen);
907 } while (len > 0 || !eofflag);
911 free(dirbuf, M_TEMP);
921 vn_close(mvp, FREAD, cred, td);
923 vn_lock(vp, locked | LK_RETRY);
928 vop_stdallocate(struct vop_allocate_args *ap)
932 off_t maxfilesize = 0;
935 struct vattr vattr, *vap;
937 off_t fsize, len, cur, offset;
950 offset = *ap->a_offset;
952 error = VOP_GETATTR(vp, vap, td->td_ucred);
955 fsize = vap->va_size;
956 iosize = vap->va_blocksize;
958 iosize = BLKDEV_IOSIZE;
959 if (iosize > MAXPHYS)
961 buf = malloc(iosize, M_TEMP, M_WAITOK);
965 * Check if the filesystem sets f_maxfilesize; if not use
966 * VOP_SETATTR to perform the check.
968 sfs = malloc(sizeof(struct statfs), M_STATFS, M_WAITOK);
969 error = VFS_STATFS(vp->v_mount, sfs, td);
971 maxfilesize = sfs->f_maxfilesize;
976 if (offset > maxfilesize || len > maxfilesize ||
977 offset + len > maxfilesize) {
983 if (offset + len > vap->va_size) {
985 * Test offset + len against the filesystem's maxfilesize.
988 vap->va_size = offset + len;
989 error = VOP_SETATTR(vp, vap, td->td_ucred);
993 vap->va_size = fsize;
994 error = VOP_SETATTR(vp, vap, td->td_ucred);
1001 * Read and write back anything below the nominal file
1002 * size. There's currently no way outside the filesystem
1003 * to know whether this area is sparse or not.
1006 if ((offset % iosize) != 0)
1007 cur -= (offset % iosize);
1010 if (offset < fsize) {
1011 aiov.iov_base = buf;
1013 auio.uio_iov = &aiov;
1014 auio.uio_iovcnt = 1;
1015 auio.uio_offset = offset;
1016 auio.uio_resid = cur;
1017 auio.uio_segflg = UIO_SYSSPACE;
1018 auio.uio_rw = UIO_READ;
1020 error = VOP_READ(vp, &auio, 0, td->td_ucred);
1023 if (auio.uio_resid > 0) {
1024 bzero(buf + cur - auio.uio_resid,
1031 aiov.iov_base = buf;
1033 auio.uio_iov = &aiov;
1034 auio.uio_iovcnt = 1;
1035 auio.uio_offset = offset;
1036 auio.uio_resid = cur;
1037 auio.uio_segflg = UIO_SYSSPACE;
1038 auio.uio_rw = UIO_WRITE;
1041 error = VOP_WRITE(vp, &auio, 0, td->td_ucred);
1055 *ap->a_offset = offset;
1061 vop_stdadvise(struct vop_advise_args *ap)
1065 daddr_t startn, endn;
1070 switch (ap->a_advice) {
1071 case POSIX_FADV_WILLNEED:
1073 * Do nothing for now. Filesystems should provide a
1074 * custom method which starts an asynchronous read of
1075 * the requested region.
1079 case POSIX_FADV_DONTNEED:
1081 vn_lock(vp, LK_EXCLUSIVE | LK_RETRY);
1082 if (vp->v_iflag & VI_DOOMED) {
1088 * Deactivate pages in the specified range from the backing VM
1089 * object. Pages that are resident in the buffer cache will
1090 * remain wired until their corresponding buffers are released
1093 if (vp->v_object != NULL) {
1094 start = trunc_page(ap->a_start);
1095 end = round_page(ap->a_end);
1096 VM_OBJECT_RLOCK(vp->v_object);
1097 vm_object_page_noreuse(vp->v_object, OFF_TO_IDX(start),
1099 VM_OBJECT_RUNLOCK(vp->v_object);
1104 bsize = vp->v_bufobj.bo_bsize;
1105 startn = ap->a_start / bsize;
1106 endn = ap->a_end / bsize;
1107 error = bnoreuselist(&bo->bo_clean, bo, startn, endn);
1109 error = bnoreuselist(&bo->bo_dirty, bo, startn, endn);
1121 vop_stdunp_bind(struct vop_unp_bind_args *ap)
1124 ap->a_vp->v_unpcb = ap->a_unpcb;
1129 vop_stdunp_connect(struct vop_unp_connect_args *ap)
1132 *ap->a_unpcb = ap->a_vp->v_unpcb;
1137 vop_stdunp_detach(struct vop_unp_detach_args *ap)
1140 ap->a_vp->v_unpcb = NULL;
1145 vop_stdis_text(struct vop_is_text_args *ap)
1148 return ((ap->a_vp->v_vflag & VV_TEXT) != 0);
1152 vop_stdset_text(struct vop_set_text_args *ap)
1155 ap->a_vp->v_vflag |= VV_TEXT;
1160 vop_stdunset_text(struct vop_unset_text_args *ap)
1163 ap->a_vp->v_vflag &= ~VV_TEXT;
1168 vop_stdget_writecount(struct vop_get_writecount_args *ap)
1171 *ap->a_writecount = ap->a_vp->v_writecount;
1176 vop_stdadd_writecount(struct vop_add_writecount_args *ap)
1179 ap->a_vp->v_writecount += ap->a_inc;
1185 * used to fill the vfs function table to get reasonable default return values.
1188 vfs_stdroot (mp, flags, vpp)
1194 return (EOPNOTSUPP);
1198 vfs_stdstatfs (mp, sbp)
1203 return (EOPNOTSUPP);
1207 vfs_stdquotactl (mp, cmds, uid, arg)
1214 return (EOPNOTSUPP);
1218 vfs_stdsync(mp, waitfor)
1222 struct vnode *vp, *mvp;
1224 int error, lockreq, allerror = 0;
1227 lockreq = LK_EXCLUSIVE | LK_INTERLOCK;
1228 if (waitfor != MNT_WAIT)
1229 lockreq |= LK_NOWAIT;
1231 * Force stale buffer cache information to be flushed.
1234 MNT_VNODE_FOREACH_ALL(vp, mp, mvp) {
1235 if (vp->v_bufobj.bo_dirty.bv_cnt == 0) {
1239 if ((error = vget(vp, lockreq, td)) != 0) {
1240 if (error == ENOENT) {
1241 MNT_VNODE_FOREACH_ALL_ABORT(mp, mvp);
1246 error = VOP_FSYNC(vp, waitfor, td);
1255 vfs_stdnosync (mp, waitfor)
1264 vfs_stdvget (mp, ino, flags, vpp)
1271 return (EOPNOTSUPP);
1275 vfs_stdfhtovp (mp, fhp, flags, vpp)
1282 return (EOPNOTSUPP);
1287 struct vfsconf *vfsp;
1294 vfs_stduninit (vfsp)
1295 struct vfsconf *vfsp;
1302 vfs_stdextattrctl(mp, cmd, filename_vp, attrnamespace, attrname)
1305 struct vnode *filename_vp;
1307 const char *attrname;
1310 if (filename_vp != NULL)
1311 VOP_UNLOCK(filename_vp, 0);
1312 return (EOPNOTSUPP);
1316 vfs_stdsysctl(mp, op, req)
1319 struct sysctl_req *req;
1322 return (EOPNOTSUPP);
1325 /* end of vfs default ops */