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;
485 case _PC_ACL_EXTENDED:
487 case _PC_CAP_PRESENT:
488 case _PC_INF_PRESENT:
489 case _PC_MAC_PRESENT:
499 * Standard lock, unlock and islocked functions.
503 struct vop_lock1_args /* {
510 struct vnode *vp = ap->a_vp;
514 return (lockmgr_lock_fast_path(vp->v_vnlock, ap->a_flags,
515 &ilk->lock_object, ap->a_file, ap->a_line));
521 struct vop_unlock_args /* {
526 struct vnode *vp = ap->a_vp;
530 return (lockmgr_unlock_fast_path(vp->v_vnlock, ap->a_flags,
537 struct vop_islocked_args /* {
542 return (lockstatus(ap->a_vp->v_vnlock));
546 * Return true for select/poll.
550 struct vop_poll_args /* {
553 struct ucred *a_cred;
558 return (poll_no_poll(ap->a_events));
562 * Implement poll for local filesystems that support it.
566 struct vop_poll_args /* {
569 struct ucred *a_cred;
573 if (ap->a_events & ~POLLSTANDARD)
574 return (vn_pollrecord(ap->a_vp, ap->a_td, ap->a_events));
575 return (ap->a_events & (POLLIN | POLLOUT | POLLRDNORM | POLLWRNORM));
579 * Return our mount point, as we will take charge of the writes.
582 vop_stdgetwritemount(ap)
583 struct vop_getwritemount_args /* {
585 struct mount **a_mpp;
591 * XXX Since this is called unlocked we may be recycled while
592 * attempting to ref the mount. If this is the case or mountpoint
593 * will be set to NULL. We only have to prevent this call from
594 * returning with a ref to an incorrect mountpoint. It is not
595 * harmful to return with a ref to our previous mountpoint.
597 mp = ap->a_vp->v_mount;
600 if (mp != ap->a_vp->v_mount) {
609 /* XXX Needs good comment and VOP_BMAP(9) manpage */
612 struct vop_bmap_args /* {
615 struct bufobj **a_bop;
622 if (ap->a_bop != NULL)
623 *ap->a_bop = &ap->a_vp->v_bufobj;
624 if (ap->a_bnp != NULL)
625 *ap->a_bnp = ap->a_bn * btodb(ap->a_vp->v_mount->mnt_stat.f_iosize);
626 if (ap->a_runp != NULL)
628 if (ap->a_runb != NULL)
635 struct vop_fsync_args /* {
642 return (vn_fsync_buf(ap->a_vp, ap->a_waitfor));
646 vop_stdfdatasync(struct vop_fdatasync_args *ap)
649 return (VOP_FSYNC(ap->a_vp, MNT_WAIT, ap->a_td));
653 vop_stdfdatasync_buf(struct vop_fdatasync_args *ap)
656 return (vn_fsync_buf(ap->a_vp, MNT_WAIT));
659 /* XXX Needs good comment and more info in the manpage (VOP_GETPAGES(9)). */
662 struct vop_getpages_args /* {
671 return vnode_pager_generic_getpages(ap->a_vp, ap->a_m,
672 ap->a_count, ap->a_rbehind, ap->a_rahead, NULL, NULL);
676 vop_stdgetpages_async(struct vop_getpages_async_args *ap)
680 error = VOP_GETPAGES(ap->a_vp, ap->a_m, ap->a_count, ap->a_rbehind,
682 ap->a_iodone(ap->a_arg, ap->a_m, ap->a_count, error);
687 vop_stdkqfilter(struct vop_kqfilter_args *ap)
689 return vfs_kqfilter(ap);
692 /* XXX Needs good comment and more info in the manpage (VOP_PUTPAGES(9)). */
695 struct vop_putpages_args /* {
704 return vnode_pager_generic_putpages(ap->a_vp, ap->a_m, ap->a_count,
705 ap->a_sync, ap->a_rtvals);
709 vop_stdvptofh(struct vop_vptofh_args *ap)
715 vop_stdvptocnp(struct vop_vptocnp_args *ap)
717 struct vnode *vp = ap->a_vp;
718 struct vnode **dvp = ap->a_vpp;
719 struct ucred *cred = ap->a_cred;
720 char *buf = ap->a_buf;
721 int *buflen = ap->a_buflen;
723 int i, error, eofflag, dirbuflen, flags, locked, len, covered;
737 if (vp->v_type != VDIR)
740 error = VOP_GETATTR(vp, &va, cred);
745 locked = VOP_ISLOCKED(vp);
747 NDINIT_ATVP(&nd, LOOKUP, FOLLOW | LOCKSHARED | LOCKLEAF, UIO_SYSSPACE,
750 error = vn_open_cred(&nd, &flags, 0, VN_OPEN_NOAUDIT, cred, NULL);
752 vn_lock(vp, locked | LK_RETRY);
755 NDFREE(&nd, NDF_ONLY_PNBUF);
757 mvp = *dvp = nd.ni_vp;
759 if (vp->v_mount != (*dvp)->v_mount &&
760 ((*dvp)->v_vflag & VV_ROOT) &&
761 ((*dvp)->v_mount->mnt_flag & MNT_UNION)) {
762 *dvp = (*dvp)->v_mount->mnt_vnodecovered;
765 vn_close(mvp, FREAD, cred, td);
767 vn_lock(*dvp, LK_SHARED | LK_RETRY);
771 fileno = va.va_fileid;
773 dirbuflen = DEV_BSIZE;
774 if (dirbuflen < va.va_blocksize)
775 dirbuflen = va.va_blocksize;
776 dirbuf = (char *)malloc(dirbuflen, M_TEMP, M_WAITOK);
778 if ((*dvp)->v_type != VDIR) {
786 /* call VOP_READDIR of parent */
787 error = get_next_dirent(*dvp, &dp, dirbuf, dirbuflen, &off,
788 &cpos, &len, &eofflag, td);
792 if ((dp->d_type != DT_WHT) &&
793 (dp->d_fileno == fileno)) {
796 vn_lock(mvp, LK_SHARED | LK_RETRY);
797 if (dirent_exists(mvp, dp->d_name, td)) {
800 vn_lock(*dvp, LK_SHARED | LK_RETRY);
804 vn_lock(*dvp, LK_SHARED | LK_RETRY);
812 if (dp->d_namlen == 1 && dp->d_name[0] == '.') {
815 bcopy(dp->d_name, buf + i, dp->d_namlen);
820 } while (len > 0 || !eofflag);
824 free(dirbuf, M_TEMP);
834 vn_close(mvp, FREAD, cred, td);
836 vn_lock(vp, locked | LK_RETRY);
841 vop_stdallocate(struct vop_allocate_args *ap)
845 off_t maxfilesize = 0;
848 struct vattr vattr, *vap;
850 off_t fsize, len, cur, offset;
863 offset = *ap->a_offset;
865 error = VOP_GETATTR(vp, vap, td->td_ucred);
868 fsize = vap->va_size;
869 iosize = vap->va_blocksize;
871 iosize = BLKDEV_IOSIZE;
872 if (iosize > MAXPHYS)
874 buf = malloc(iosize, M_TEMP, M_WAITOK);
878 * Check if the filesystem sets f_maxfilesize; if not use
879 * VOP_SETATTR to perform the check.
881 sfs = malloc(sizeof(struct statfs), M_STATFS, M_WAITOK);
882 error = VFS_STATFS(vp->v_mount, sfs, td);
884 maxfilesize = sfs->f_maxfilesize;
889 if (offset > maxfilesize || len > maxfilesize ||
890 offset + len > maxfilesize) {
896 if (offset + len > vap->va_size) {
898 * Test offset + len against the filesystem's maxfilesize.
901 vap->va_size = offset + len;
902 error = VOP_SETATTR(vp, vap, td->td_ucred);
906 vap->va_size = fsize;
907 error = VOP_SETATTR(vp, vap, td->td_ucred);
914 * Read and write back anything below the nominal file
915 * size. There's currently no way outside the filesystem
916 * to know whether this area is sparse or not.
919 if ((offset % iosize) != 0)
920 cur -= (offset % iosize);
923 if (offset < fsize) {
926 auio.uio_iov = &aiov;
928 auio.uio_offset = offset;
929 auio.uio_resid = cur;
930 auio.uio_segflg = UIO_SYSSPACE;
931 auio.uio_rw = UIO_READ;
933 error = VOP_READ(vp, &auio, 0, td->td_ucred);
936 if (auio.uio_resid > 0) {
937 bzero(buf + cur - auio.uio_resid,
946 auio.uio_iov = &aiov;
948 auio.uio_offset = offset;
949 auio.uio_resid = cur;
950 auio.uio_segflg = UIO_SYSSPACE;
951 auio.uio_rw = UIO_WRITE;
954 error = VOP_WRITE(vp, &auio, 0, td->td_ucred);
968 *ap->a_offset = offset;
974 vop_stdadvise(struct vop_advise_args *ap)
978 daddr_t startn, endn;
979 off_t bstart, bend, start, end;
983 switch (ap->a_advice) {
984 case POSIX_FADV_WILLNEED:
986 * Do nothing for now. Filesystems should provide a
987 * custom method which starts an asynchronous read of
988 * the requested region.
992 case POSIX_FADV_DONTNEED:
994 vn_lock(vp, LK_EXCLUSIVE | LK_RETRY);
995 if (vp->v_iflag & VI_DOOMED) {
1001 * Round to block boundaries (and later possibly further to
1002 * page boundaries). Applications cannot reasonably be aware
1003 * of the boundaries, and the rounding must be to expand at
1004 * both extremities to cover enough. It still doesn't cover
1005 * read-ahead. For partial blocks, this gives unnecessary
1006 * discarding of buffers but is efficient enough since the
1007 * pages usually remain in VMIO for some time.
1009 bsize = vp->v_bufobj.bo_bsize;
1010 bstart = rounddown(ap->a_start, bsize);
1011 bend = roundup(ap->a_end, bsize);
1014 * Deactivate pages in the specified range from the backing VM
1015 * object. Pages that are resident in the buffer cache will
1016 * remain wired until their corresponding buffers are released
1019 if (vp->v_object != NULL) {
1020 start = trunc_page(bstart);
1021 end = round_page(bend);
1022 VM_OBJECT_RLOCK(vp->v_object);
1023 vm_object_page_noreuse(vp->v_object, OFF_TO_IDX(start),
1025 VM_OBJECT_RUNLOCK(vp->v_object);
1030 startn = bstart / bsize;
1031 endn = bend / bsize;
1032 error = bnoreuselist(&bo->bo_clean, bo, startn, endn);
1034 error = bnoreuselist(&bo->bo_dirty, bo, startn, endn);
1046 vop_stdunp_bind(struct vop_unp_bind_args *ap)
1049 ap->a_vp->v_unpcb = ap->a_unpcb;
1054 vop_stdunp_connect(struct vop_unp_connect_args *ap)
1057 *ap->a_unpcb = ap->a_vp->v_unpcb;
1062 vop_stdunp_detach(struct vop_unp_detach_args *ap)
1065 ap->a_vp->v_unpcb = NULL;
1070 vop_stdis_text(struct vop_is_text_args *ap)
1073 return ((ap->a_vp->v_vflag & VV_TEXT) != 0);
1077 vop_stdset_text(struct vop_set_text_args *ap)
1080 ap->a_vp->v_vflag |= VV_TEXT;
1085 vop_stdunset_text(struct vop_unset_text_args *ap)
1088 ap->a_vp->v_vflag &= ~VV_TEXT;
1093 vop_stdget_writecount(struct vop_get_writecount_args *ap)
1096 *ap->a_writecount = ap->a_vp->v_writecount;
1101 vop_stdadd_writecount(struct vop_add_writecount_args *ap)
1104 ap->a_vp->v_writecount += ap->a_inc;
1110 * used to fill the vfs function table to get reasonable default return values.
1113 vfs_stdroot (mp, flags, vpp)
1119 return (EOPNOTSUPP);
1123 vfs_stdstatfs (mp, sbp)
1128 return (EOPNOTSUPP);
1132 vfs_stdquotactl (mp, cmds, uid, arg)
1139 return (EOPNOTSUPP);
1143 vfs_stdsync(mp, waitfor)
1147 struct vnode *vp, *mvp;
1149 int error, lockreq, allerror = 0;
1152 lockreq = LK_EXCLUSIVE | LK_INTERLOCK;
1153 if (waitfor != MNT_WAIT)
1154 lockreq |= LK_NOWAIT;
1156 * Force stale buffer cache information to be flushed.
1159 MNT_VNODE_FOREACH_ALL(vp, mp, mvp) {
1160 if (vp->v_bufobj.bo_dirty.bv_cnt == 0) {
1164 if ((error = vget(vp, lockreq, td)) != 0) {
1165 if (error == ENOENT) {
1166 MNT_VNODE_FOREACH_ALL_ABORT(mp, mvp);
1171 error = VOP_FSYNC(vp, waitfor, td);
1180 vfs_stdnosync (mp, waitfor)
1189 vfs_stdvget (mp, ino, flags, vpp)
1196 return (EOPNOTSUPP);
1200 vfs_stdfhtovp (mp, fhp, flags, vpp)
1207 return (EOPNOTSUPP);
1212 struct vfsconf *vfsp;
1219 vfs_stduninit (vfsp)
1220 struct vfsconf *vfsp;
1227 vfs_stdextattrctl(mp, cmd, filename_vp, attrnamespace, attrname)
1230 struct vnode *filename_vp;
1232 const char *attrname;
1235 if (filename_vp != NULL)
1236 VOP_UNLOCK(filename_vp, 0);
1237 return (EOPNOTSUPP);
1241 vfs_stdsysctl(mp, op, req)
1244 struct sysctl_req *req;
1247 return (EOPNOTSUPP);
1250 static vop_bypass_t *
1251 bp_by_off(struct vop_vector *vop, struct vop_generic_args *a)
1254 return (*(vop_bypass_t **)((char *)vop + a->a_desc->vdesc_vop_offset));
1258 vop_sigdefer(struct vop_vector *vop, struct vop_generic_args *a)
1263 for (; vop != NULL; vop = vop->vop_default) {
1264 bp = bp_by_off(vop, a);
1269 * Bypass is not really supported. It is done for
1270 * fallback to unimplemented vops in the default
1273 bp = vop->vop_bypass;
1279 prev_stops = sigdeferstop(SIGDEFERSTOP_SILENT);
1281 sigallowstop(prev_stops);