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_stdfdatasync(struct vop_fdatasync_args *ap);
87 static int vop_stdgetpages_async(struct vop_getpages_async_args *ap);
90 * This vnode table stores what we want to do if the filesystem doesn't
91 * implement a particular VOP.
93 * If there is no specific entry here, we will return EOPNOTSUPP.
95 * Note that every filesystem has to implement either vop_access
96 * or vop_accessx; failing to do so will result in immediate crash
97 * due to stack overflow, as vop_stdaccess() calls vop_stdaccessx(),
98 * which calls vop_stdaccess() etc.
101 struct vop_vector default_vnodeops = {
103 .vop_bypass = VOP_EOPNOTSUPP,
105 .vop_access = vop_stdaccess,
106 .vop_accessx = vop_stdaccessx,
107 .vop_advise = vop_stdadvise,
108 .vop_advlock = vop_stdadvlock,
109 .vop_advlockasync = vop_stdadvlockasync,
110 .vop_advlockpurge = vop_stdadvlockpurge,
111 .vop_allocate = vop_stdallocate,
112 .vop_bmap = vop_stdbmap,
113 .vop_close = VOP_NULL,
114 .vop_fsync = VOP_NULL,
115 .vop_fdatasync = vop_stdfdatasync,
116 .vop_getpages = vop_stdgetpages,
117 .vop_getpages_async = vop_stdgetpages_async,
118 .vop_getwritemount = vop_stdgetwritemount,
119 .vop_inactive = VOP_NULL,
120 .vop_ioctl = VOP_ENOTTY,
121 .vop_kqfilter = vop_stdkqfilter,
122 .vop_islocked = vop_stdislocked,
123 .vop_lock1 = vop_stdlock,
124 .vop_lookup = vop_nolookup,
125 .vop_open = VOP_NULL,
126 .vop_pathconf = VOP_EINVAL,
127 .vop_poll = vop_nopoll,
128 .vop_putpages = vop_stdputpages,
129 .vop_readlink = VOP_EINVAL,
130 .vop_rename = vop_norename,
131 .vop_revoke = VOP_PANIC,
132 .vop_strategy = vop_nostrategy,
133 .vop_unlock = vop_stdunlock,
134 .vop_vptocnp = vop_stdvptocnp,
135 .vop_vptofh = vop_stdvptofh,
136 .vop_unp_bind = vop_stdunp_bind,
137 .vop_unp_connect = vop_stdunp_connect,
138 .vop_unp_detach = vop_stdunp_detach,
139 .vop_is_text = vop_stdis_text,
140 .vop_set_text = vop_stdset_text,
141 .vop_unset_text = vop_stdunset_text,
142 .vop_get_writecount = vop_stdget_writecount,
143 .vop_add_writecount = vop_stdadd_writecount,
147 * Series of placeholder functions for various error returns for
152 vop_eopnotsupp(struct vop_generic_args *ap)
155 printf("vop_notsupp[%s]\n", ap->a_desc->vdesc_name);
162 vop_ebadf(struct vop_generic_args *ap)
169 vop_enotty(struct vop_generic_args *ap)
176 vop_einval(struct vop_generic_args *ap)
183 vop_enoent(struct vop_generic_args *ap)
190 vop_null(struct vop_generic_args *ap)
197 * Helper function to panic on some bad VOPs in some filesystems.
200 vop_panic(struct vop_generic_args *ap)
203 panic("filesystem goof: vop_panic[%s]", ap->a_desc->vdesc_name);
207 * vop_std<something> and vop_no<something> are default functions for use by
208 * filesystems that need the "default reasonable" implementation for a
209 * particular operation.
211 * The documentation for the operations they implement exists (if it exists)
212 * in the VOP_<SOMETHING>(9) manpage (all uppercase).
216 * Default vop for filesystems that do not support name lookup
220 struct vop_lookup_args /* {
222 struct vnode **a_vpp;
223 struct componentname *a_cnp;
234 * Handle unlock and reference counting for arguments of vop_rename
235 * for filesystems that do not implement rename operation.
238 vop_norename(struct vop_rename_args *ap)
248 * Strategy routine for VFS devices that have none.
250 * BIO_ERROR and B_INVAL must be cleared prior to calling any strategy
251 * routine. Typically this is done for a BIO_READ strategy call.
252 * Typically B_INVAL is assumed to already be clear prior to a write
253 * and should not be cleared manually unless you just made the buffer
254 * invalid. BIO_ERROR should be cleared either way.
258 vop_nostrategy (struct vop_strategy_args *ap)
260 printf("No strategy for buffer at %p\n", ap->a_bp);
261 vn_printf(ap->a_vp, "vnode ");
262 ap->a_bp->b_ioflags |= BIO_ERROR;
263 ap->a_bp->b_error = EOPNOTSUPP;
269 get_next_dirent(struct vnode *vp, struct dirent **dpp, char *dirbuf,
270 int dirbuflen, off_t *off, char **cpos, int *len,
271 int *eofflag, struct thread *td)
278 KASSERT(VOP_ISLOCKED(vp), ("vp %p is not locked", vp));
279 KASSERT(vp->v_type == VDIR, ("vp %p is not a directory", vp));
282 iov.iov_base = dirbuf;
283 iov.iov_len = dirbuflen;
287 uio.uio_offset = *off;
288 uio.uio_resid = dirbuflen;
289 uio.uio_segflg = UIO_SYSSPACE;
290 uio.uio_rw = UIO_READ;
296 error = mac_vnode_check_readdir(td->td_ucred, vp);
299 error = VOP_READDIR(vp, &uio, td->td_ucred, eofflag,
304 *off = uio.uio_offset;
307 *len = (dirbuflen - uio.uio_resid);
313 dp = (struct dirent *)(*cpos);
314 reclen = dp->d_reclen;
317 /* check for malformed directory.. */
318 if (reclen < DIRENT_MINSIZE)
328 * Check if a named file exists in a given directory vnode.
331 dirent_exists(struct vnode *vp, const char *dirname, struct thread *td)
334 int error, eofflag, dirbuflen, len, found;
339 KASSERT(VOP_ISLOCKED(vp), ("vp %p is not locked", vp));
340 KASSERT(vp->v_type == VDIR, ("vp %p is not a directory", vp));
344 error = VOP_GETATTR(vp, &va, td->td_ucred);
348 dirbuflen = DEV_BSIZE;
349 if (dirbuflen < va.va_blocksize)
350 dirbuflen = va.va_blocksize;
351 dirbuf = (char *)malloc(dirbuflen, M_TEMP, M_WAITOK);
356 error = get_next_dirent(vp, &dp, dirbuf, dirbuflen, &off,
357 &cpos, &len, &eofflag, td);
361 if (dp->d_type != DT_WHT && dp->d_fileno != 0 &&
362 strcmp(dp->d_name, dirname) == 0) {
366 } while (len > 0 || !eofflag);
369 free(dirbuf, M_TEMP);
374 vop_stdaccess(struct vop_access_args *ap)
377 KASSERT((ap->a_accmode & ~(VEXEC | VWRITE | VREAD | VADMIN |
378 VAPPEND)) == 0, ("invalid bit in accmode"));
380 return (VOP_ACCESSX(ap->a_vp, ap->a_accmode, ap->a_cred, ap->a_td));
384 vop_stdaccessx(struct vop_accessx_args *ap)
387 accmode_t accmode = ap->a_accmode;
389 error = vfs_unixify_accmode(&accmode);
396 return (VOP_ACCESS(ap->a_vp, accmode, ap->a_cred, ap->a_td));
400 * Advisory record locking support
403 vop_stdadvlock(struct vop_advlock_args *ap)
410 if (ap->a_fl->l_whence == SEEK_END) {
412 * The NFSv4 server must avoid doing a vn_lock() here, since it
413 * can deadlock the nfsd threads, due to a LOR. Fortunately
414 * the NFSv4 server always uses SEEK_SET and this code is
415 * only required for the SEEK_END case.
417 vn_lock(vp, LK_SHARED | LK_RETRY);
418 error = VOP_GETATTR(vp, &vattr, curthread->td_ucred);
425 return (lf_advlock(ap, &(vp->v_lockf), vattr.va_size));
429 vop_stdadvlockasync(struct vop_advlockasync_args *ap)
436 if (ap->a_fl->l_whence == SEEK_END) {
437 /* The size argument is only needed for SEEK_END. */
438 vn_lock(vp, LK_SHARED | LK_RETRY);
439 error = VOP_GETATTR(vp, &vattr, curthread->td_ucred);
446 return (lf_advlockasync(ap, &(vp->v_lockf), vattr.va_size));
450 vop_stdadvlockpurge(struct vop_advlockpurge_args *ap)
455 lf_purgelocks(vp, &vp->v_lockf);
462 * Standard implementation of POSIX pathconf, to get information about limits
464 * Override per filesystem for the case where the filesystem has smaller
469 struct vop_pathconf_args /* {
476 switch (ap->a_name) {
478 *ap->a_retval = _POSIX_ASYNCHRONOUS_IO;
481 *ap->a_retval = PATH_MAX;
483 case _PC_ACL_EXTENDED:
485 case _PC_CAP_PRESENT:
486 case _PC_INF_PRESENT:
487 case _PC_MAC_PRESENT:
497 * Standard lock, unlock and islocked functions.
501 struct vop_lock1_args /* {
508 struct vnode *vp = ap->a_vp;
512 return (lockmgr_lock_fast_path(vp->v_vnlock, ap->a_flags,
513 (ilk != NULL) ? &ilk->lock_object : NULL, ap->a_file, ap->a_line));
519 struct vop_unlock_args /* {
524 struct vnode *vp = ap->a_vp;
528 return (lockmgr_unlock_fast_path(vp->v_vnlock, ap->a_flags,
529 (ilk != NULL) ? &ilk->lock_object : NULL));
535 struct vop_islocked_args /* {
540 return (lockstatus(ap->a_vp->v_vnlock));
544 * Return true for select/poll.
548 struct vop_poll_args /* {
551 struct ucred *a_cred;
556 return (poll_no_poll(ap->a_events));
560 * Implement poll for local filesystems that support it.
564 struct vop_poll_args /* {
567 struct ucred *a_cred;
571 if (ap->a_events & ~POLLSTANDARD)
572 return (vn_pollrecord(ap->a_vp, ap->a_td, ap->a_events));
573 return (ap->a_events & (POLLIN | POLLOUT | POLLRDNORM | POLLWRNORM));
577 * Return our mount point, as we will take charge of the writes.
580 vop_stdgetwritemount(ap)
581 struct vop_getwritemount_args /* {
583 struct mount **a_mpp;
589 * XXX Since this is called unlocked we may be recycled while
590 * attempting to ref the mount. If this is the case or mountpoint
591 * will be set to NULL. We only have to prevent this call from
592 * returning with a ref to an incorrect mountpoint. It is not
593 * harmful to return with a ref to our previous mountpoint.
595 mp = ap->a_vp->v_mount;
598 if (mp != ap->a_vp->v_mount) {
607 /* XXX Needs good comment and VOP_BMAP(9) manpage */
610 struct vop_bmap_args /* {
613 struct bufobj **a_bop;
620 if (ap->a_bop != NULL)
621 *ap->a_bop = &ap->a_vp->v_bufobj;
622 if (ap->a_bnp != NULL)
623 *ap->a_bnp = ap->a_bn * btodb(ap->a_vp->v_mount->mnt_stat.f_iosize);
624 if (ap->a_runp != NULL)
626 if (ap->a_runb != NULL)
633 struct vop_fsync_args /* {
640 struct buf *bp, *nbp;
646 maxretry = 10000; /* large, arbitrarily chosen */
649 if (vp->v_type == VCHR) {
651 mp = vp->v_rdev->si_mountpt;
658 * MARK/SCAN initialization to avoid infinite loops.
660 TAILQ_FOREACH(bp, &bo->bo_dirty.bv_hd, b_bobufs) {
661 bp->b_vflags &= ~BV_SCANNED;
666 * Flush all dirty buffers associated with a vnode.
669 TAILQ_FOREACH_SAFE(bp, &bo->bo_dirty.bv_hd, b_bobufs, nbp) {
670 if ((bp->b_vflags & BV_SCANNED) != 0)
672 bp->b_vflags |= BV_SCANNED;
673 if (BUF_LOCK(bp, LK_EXCLUSIVE | LK_NOWAIT, NULL)) {
674 if (ap->a_waitfor != MNT_WAIT)
677 LK_EXCLUSIVE | LK_INTERLOCK | LK_SLEEPFAIL,
678 BO_LOCKPTR(bo)) != 0) {
685 KASSERT(bp->b_bufobj == bo,
686 ("bp %p wrong b_bufobj %p should be %p",
687 bp, bp->b_bufobj, bo));
688 if ((bp->b_flags & B_DELWRI) == 0)
689 panic("fsync: not dirty");
690 if ((vp->v_object != NULL) && (bp->b_flags & B_CLUSTEROK)) {
697 pause("dirty", hz < 1000 ? 1 : hz / 1000);
703 * If synchronous the caller expects us to completely resolve all
704 * dirty buffers in the system. Wait for in-progress I/O to
705 * complete (which could include background bitmap writes), then
706 * retry if dirty blocks still exist.
708 if (ap->a_waitfor == MNT_WAIT) {
709 bufobj_wwait(bo, 0, 0);
710 if (bo->bo_dirty.bv_cnt > 0) {
712 * If we are unable to write any of these buffers
713 * then we fail now rather than trying endlessly
716 TAILQ_FOREACH(bp, &bo->bo_dirty.bv_hd, b_bobufs)
717 if ((error = bp->b_error) == 0)
719 if ((mp != NULL && mp->mnt_secondary_writes > 0) ||
720 (error == 0 && --maxretry >= 0))
728 vn_printf(vp, "fsync: giving up on dirty (error = %d) ", error);
734 vop_stdfdatasync(struct vop_fdatasync_args *ap)
737 return (VOP_FSYNC(ap->a_vp, MNT_WAIT, ap->a_td));
741 vop_stdfdatasync_buf(struct vop_fdatasync_args *ap)
743 struct vop_fsync_args apf;
746 apf.a_waitfor = MNT_WAIT;
748 return (vop_stdfsync(&apf));
751 /* XXX Needs good comment and more info in the manpage (VOP_GETPAGES(9)). */
754 struct vop_getpages_args /* {
763 return vnode_pager_generic_getpages(ap->a_vp, ap->a_m,
764 ap->a_count, ap->a_rbehind, ap->a_rahead, NULL, NULL);
768 vop_stdgetpages_async(struct vop_getpages_async_args *ap)
772 error = VOP_GETPAGES(ap->a_vp, ap->a_m, ap->a_count, ap->a_rbehind,
774 ap->a_iodone(ap->a_arg, ap->a_m, ap->a_count, error);
779 vop_stdkqfilter(struct vop_kqfilter_args *ap)
781 return vfs_kqfilter(ap);
784 /* XXX Needs good comment and more info in the manpage (VOP_PUTPAGES(9)). */
787 struct vop_putpages_args /* {
796 return vnode_pager_generic_putpages(ap->a_vp, ap->a_m, ap->a_count,
797 ap->a_sync, ap->a_rtvals);
801 vop_stdvptofh(struct vop_vptofh_args *ap)
807 vop_stdvptocnp(struct vop_vptocnp_args *ap)
809 struct vnode *vp = ap->a_vp;
810 struct vnode **dvp = ap->a_vpp;
811 struct ucred *cred = ap->a_cred;
812 char *buf = ap->a_buf;
813 int *buflen = ap->a_buflen;
815 int i, error, eofflag, dirbuflen, flags, locked, len, covered;
829 if (vp->v_type != VDIR)
832 error = VOP_GETATTR(vp, &va, cred);
837 locked = VOP_ISLOCKED(vp);
839 NDINIT_ATVP(&nd, LOOKUP, FOLLOW | LOCKSHARED | LOCKLEAF, UIO_SYSSPACE,
842 error = vn_open_cred(&nd, &flags, 0, VN_OPEN_NOAUDIT, cred, NULL);
844 vn_lock(vp, locked | LK_RETRY);
847 NDFREE(&nd, NDF_ONLY_PNBUF);
849 mvp = *dvp = nd.ni_vp;
851 if (vp->v_mount != (*dvp)->v_mount &&
852 ((*dvp)->v_vflag & VV_ROOT) &&
853 ((*dvp)->v_mount->mnt_flag & MNT_UNION)) {
854 *dvp = (*dvp)->v_mount->mnt_vnodecovered;
857 vn_close(mvp, FREAD, cred, td);
859 vn_lock(*dvp, LK_SHARED | LK_RETRY);
863 fileno = va.va_fileid;
865 dirbuflen = DEV_BSIZE;
866 if (dirbuflen < va.va_blocksize)
867 dirbuflen = va.va_blocksize;
868 dirbuf = (char *)malloc(dirbuflen, M_TEMP, M_WAITOK);
870 if ((*dvp)->v_type != VDIR) {
878 /* call VOP_READDIR of parent */
879 error = get_next_dirent(*dvp, &dp, dirbuf, dirbuflen, &off,
880 &cpos, &len, &eofflag, td);
884 if ((dp->d_type != DT_WHT) &&
885 (dp->d_fileno == fileno)) {
888 vn_lock(mvp, LK_SHARED | LK_RETRY);
889 if (dirent_exists(mvp, dp->d_name, td)) {
892 vn_lock(*dvp, LK_SHARED | LK_RETRY);
896 vn_lock(*dvp, LK_SHARED | LK_RETRY);
904 if (dp->d_namlen == 1 && dp->d_name[0] == '.') {
907 bcopy(dp->d_name, buf + i, dp->d_namlen);
912 } while (len > 0 || !eofflag);
916 free(dirbuf, M_TEMP);
926 vn_close(mvp, FREAD, cred, td);
928 vn_lock(vp, locked | LK_RETRY);
933 vop_stdallocate(struct vop_allocate_args *ap)
937 off_t maxfilesize = 0;
940 struct vattr vattr, *vap;
942 off_t fsize, len, cur, offset;
955 offset = *ap->a_offset;
957 error = VOP_GETATTR(vp, vap, td->td_ucred);
960 fsize = vap->va_size;
961 iosize = vap->va_blocksize;
963 iosize = BLKDEV_IOSIZE;
964 if (iosize > MAXPHYS)
966 buf = malloc(iosize, M_TEMP, M_WAITOK);
970 * Check if the filesystem sets f_maxfilesize; if not use
971 * VOP_SETATTR to perform the check.
973 sfs = malloc(sizeof(struct statfs), M_STATFS, M_WAITOK);
974 error = VFS_STATFS(vp->v_mount, sfs, td);
976 maxfilesize = sfs->f_maxfilesize;
981 if (offset > maxfilesize || len > maxfilesize ||
982 offset + len > maxfilesize) {
988 if (offset + len > vap->va_size) {
990 * Test offset + len against the filesystem's maxfilesize.
993 vap->va_size = offset + len;
994 error = VOP_SETATTR(vp, vap, td->td_ucred);
998 vap->va_size = fsize;
999 error = VOP_SETATTR(vp, vap, td->td_ucred);
1006 * Read and write back anything below the nominal file
1007 * size. There's currently no way outside the filesystem
1008 * to know whether this area is sparse or not.
1011 if ((offset % iosize) != 0)
1012 cur -= (offset % iosize);
1015 if (offset < fsize) {
1016 aiov.iov_base = buf;
1018 auio.uio_iov = &aiov;
1019 auio.uio_iovcnt = 1;
1020 auio.uio_offset = offset;
1021 auio.uio_resid = cur;
1022 auio.uio_segflg = UIO_SYSSPACE;
1023 auio.uio_rw = UIO_READ;
1025 error = VOP_READ(vp, &auio, 0, td->td_ucred);
1028 if (auio.uio_resid > 0) {
1029 bzero(buf + cur - auio.uio_resid,
1036 aiov.iov_base = buf;
1038 auio.uio_iov = &aiov;
1039 auio.uio_iovcnt = 1;
1040 auio.uio_offset = offset;
1041 auio.uio_resid = cur;
1042 auio.uio_segflg = UIO_SYSSPACE;
1043 auio.uio_rw = UIO_WRITE;
1046 error = VOP_WRITE(vp, &auio, 0, td->td_ucred);
1060 *ap->a_offset = offset;
1066 vop_stdadvise(struct vop_advise_args *ap)
1070 daddr_t startn, endn;
1075 switch (ap->a_advice) {
1076 case POSIX_FADV_WILLNEED:
1078 * Do nothing for now. Filesystems should provide a
1079 * custom method which starts an asynchronous read of
1080 * the requested region.
1084 case POSIX_FADV_DONTNEED:
1086 vn_lock(vp, LK_EXCLUSIVE | LK_RETRY);
1087 if (vp->v_iflag & VI_DOOMED) {
1093 * Deactivate pages in the specified range from the backing VM
1094 * object. Pages that are resident in the buffer cache will
1095 * remain wired until their corresponding buffers are released
1098 if (vp->v_object != NULL) {
1099 start = trunc_page(ap->a_start);
1100 end = round_page(ap->a_end);
1101 VM_OBJECT_RLOCK(vp->v_object);
1102 vm_object_page_noreuse(vp->v_object, OFF_TO_IDX(start),
1104 VM_OBJECT_RUNLOCK(vp->v_object);
1109 bsize = vp->v_bufobj.bo_bsize;
1110 startn = ap->a_start / bsize;
1111 endn = ap->a_end / bsize;
1112 error = bnoreuselist(&bo->bo_clean, bo, startn, endn);
1114 error = bnoreuselist(&bo->bo_dirty, bo, startn, endn);
1126 vop_stdunp_bind(struct vop_unp_bind_args *ap)
1129 ap->a_vp->v_socket = ap->a_socket;
1134 vop_stdunp_connect(struct vop_unp_connect_args *ap)
1137 *ap->a_socket = ap->a_vp->v_socket;
1142 vop_stdunp_detach(struct vop_unp_detach_args *ap)
1145 ap->a_vp->v_socket = NULL;
1150 vop_stdis_text(struct vop_is_text_args *ap)
1153 return ((ap->a_vp->v_vflag & VV_TEXT) != 0);
1157 vop_stdset_text(struct vop_set_text_args *ap)
1160 ap->a_vp->v_vflag |= VV_TEXT;
1165 vop_stdunset_text(struct vop_unset_text_args *ap)
1168 ap->a_vp->v_vflag &= ~VV_TEXT;
1173 vop_stdget_writecount(struct vop_get_writecount_args *ap)
1176 *ap->a_writecount = ap->a_vp->v_writecount;
1181 vop_stdadd_writecount(struct vop_add_writecount_args *ap)
1184 ap->a_vp->v_writecount += ap->a_inc;
1190 * used to fill the vfs function table to get reasonable default return values.
1193 vfs_stdroot (mp, flags, vpp)
1199 return (EOPNOTSUPP);
1203 vfs_stdstatfs (mp, sbp)
1208 return (EOPNOTSUPP);
1212 vfs_stdquotactl (mp, cmds, uid, arg)
1219 return (EOPNOTSUPP);
1223 vfs_stdsync(mp, waitfor)
1227 struct vnode *vp, *mvp;
1229 int error, lockreq, allerror = 0;
1232 lockreq = LK_EXCLUSIVE | LK_INTERLOCK;
1233 if (waitfor != MNT_WAIT)
1234 lockreq |= LK_NOWAIT;
1236 * Force stale buffer cache information to be flushed.
1239 MNT_VNODE_FOREACH_ALL(vp, mp, mvp) {
1240 if (vp->v_bufobj.bo_dirty.bv_cnt == 0) {
1244 if ((error = vget(vp, lockreq, td)) != 0) {
1245 if (error == ENOENT) {
1246 MNT_VNODE_FOREACH_ALL_ABORT(mp, mvp);
1251 error = VOP_FSYNC(vp, waitfor, td);
1260 vfs_stdnosync (mp, waitfor)
1269 vfs_stdvget (mp, ino, flags, vpp)
1276 return (EOPNOTSUPP);
1280 vfs_stdfhtovp (mp, fhp, flags, vpp)
1287 return (EOPNOTSUPP);
1292 struct vfsconf *vfsp;
1299 vfs_stduninit (vfsp)
1300 struct vfsconf *vfsp;
1307 vfs_stdextattrctl(mp, cmd, filename_vp, attrnamespace, attrname)
1310 struct vnode *filename_vp;
1312 const char *attrname;
1315 if (filename_vp != NULL)
1316 VOP_UNLOCK(filename_vp, 0);
1317 return (EOPNOTSUPP);
1321 vfs_stdsysctl(mp, op, req)
1324 struct sysctl_req *req;
1327 return (EOPNOTSUPP);
1330 /* end of vfs default ops */