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/filio.h>
47 #include <sys/kernel.h>
48 #include <sys/limits.h>
50 #include <sys/lockf.h>
51 #include <sys/malloc.h>
52 #include <sys/mount.h>
53 #include <sys/namei.h>
54 #include <sys/rwlock.h>
55 #include <sys/fcntl.h>
56 #include <sys/unistd.h>
57 #include <sys/vnode.h>
58 #include <sys/dirent.h>
61 #include <security/mac/mac_framework.h>
64 #include <vm/vm_object.h>
65 #include <vm/vm_extern.h>
67 #include <vm/vm_map.h>
68 #include <vm/vm_page.h>
69 #include <vm/vm_pager.h>
70 #include <vm/vnode_pager.h>
72 static int vop_nolookup(struct vop_lookup_args *);
73 static int vop_norename(struct vop_rename_args *);
74 static int vop_nostrategy(struct vop_strategy_args *);
75 static int get_next_dirent(struct vnode *vp, struct dirent **dpp,
76 char *dirbuf, int dirbuflen, off_t *off,
77 char **cpos, int *len, int *eofflag,
79 static int dirent_exists(struct vnode *vp, const char *dirname,
82 #define DIRENT_MINSIZE (sizeof(struct dirent) - (MAXNAMLEN+1) + 4)
84 static int vop_stdis_text(struct vop_is_text_args *ap);
85 static int vop_stdunset_text(struct vop_unset_text_args *ap);
86 static int vop_stdadd_writecount(struct vop_add_writecount_args *ap);
87 static int vop_stdcopy_file_range(struct vop_copy_file_range_args *ap);
88 static int vop_stdfdatasync(struct vop_fdatasync_args *ap);
89 static int vop_stdgetpages_async(struct vop_getpages_async_args *ap);
90 static int vop_stdioctl(struct vop_ioctl_args *ap);
93 * This vnode table stores what we want to do if the filesystem doesn't
94 * implement a particular VOP.
96 * If there is no specific entry here, we will return EOPNOTSUPP.
98 * Note that every filesystem has to implement either vop_access
99 * or vop_accessx; failing to do so will result in immediate crash
100 * due to stack overflow, as vop_stdaccess() calls vop_stdaccessx(),
101 * which calls vop_stdaccess() etc.
104 struct vop_vector default_vnodeops = {
106 .vop_bypass = VOP_EOPNOTSUPP,
108 .vop_access = vop_stdaccess,
109 .vop_accessx = vop_stdaccessx,
110 .vop_advise = vop_stdadvise,
111 .vop_advlock = vop_stdadvlock,
112 .vop_advlockasync = vop_stdadvlockasync,
113 .vop_advlockpurge = vop_stdadvlockpurge,
114 .vop_allocate = vop_stdallocate,
115 .vop_bmap = vop_stdbmap,
116 .vop_close = VOP_NULL,
117 .vop_fsync = VOP_NULL,
118 .vop_fdatasync = vop_stdfdatasync,
119 .vop_getpages = vop_stdgetpages,
120 .vop_getpages_async = vop_stdgetpages_async,
121 .vop_getwritemount = vop_stdgetwritemount,
122 .vop_inactive = VOP_NULL,
123 .vop_ioctl = vop_stdioctl,
124 .vop_kqfilter = vop_stdkqfilter,
125 .vop_islocked = vop_stdislocked,
126 .vop_lock1 = vop_stdlock,
127 .vop_lookup = vop_nolookup,
128 .vop_open = VOP_NULL,
129 .vop_pathconf = VOP_EINVAL,
130 .vop_poll = vop_nopoll,
131 .vop_putpages = vop_stdputpages,
132 .vop_readlink = VOP_EINVAL,
133 .vop_rename = vop_norename,
134 .vop_revoke = VOP_PANIC,
135 .vop_strategy = vop_nostrategy,
136 .vop_unlock = vop_stdunlock,
137 .vop_vptocnp = vop_stdvptocnp,
138 .vop_vptofh = vop_stdvptofh,
139 .vop_unp_bind = vop_stdunp_bind,
140 .vop_unp_connect = vop_stdunp_connect,
141 .vop_unp_detach = vop_stdunp_detach,
142 .vop_is_text = vop_stdis_text,
143 .vop_set_text = vop_stdset_text,
144 .vop_unset_text = vop_stdunset_text,
145 .vop_add_writecount = vop_stdadd_writecount,
146 .vop_copy_file_range = vop_stdcopy_file_range,
150 * Series of placeholder functions for various error returns for
155 vop_eopnotsupp(struct vop_generic_args *ap)
158 printf("vop_notsupp[%s]\n", ap->a_desc->vdesc_name);
165 vop_ebadf(struct vop_generic_args *ap)
172 vop_enotty(struct vop_generic_args *ap)
179 vop_einval(struct vop_generic_args *ap)
186 vop_enoent(struct vop_generic_args *ap)
193 vop_null(struct vop_generic_args *ap)
200 * Helper function to panic on some bad VOPs in some filesystems.
203 vop_panic(struct vop_generic_args *ap)
206 panic("filesystem goof: vop_panic[%s]", ap->a_desc->vdesc_name);
210 * vop_std<something> and vop_no<something> are default functions for use by
211 * filesystems that need the "default reasonable" implementation for a
212 * particular operation.
214 * The documentation for the operations they implement exists (if it exists)
215 * in the VOP_<SOMETHING>(9) manpage (all uppercase).
219 * Default vop for filesystems that do not support name lookup
223 struct vop_lookup_args /* {
225 struct vnode **a_vpp;
226 struct componentname *a_cnp;
237 * Handle unlock and reference counting for arguments of vop_rename
238 * for filesystems that do not implement rename operation.
241 vop_norename(struct vop_rename_args *ap)
251 * Strategy routine for VFS devices that have none.
253 * BIO_ERROR and B_INVAL must be cleared prior to calling any strategy
254 * routine. Typically this is done for a BIO_READ strategy call.
255 * Typically B_INVAL is assumed to already be clear prior to a write
256 * and should not be cleared manually unless you just made the buffer
257 * invalid. BIO_ERROR should be cleared either way.
261 vop_nostrategy (struct vop_strategy_args *ap)
263 printf("No strategy for buffer at %p\n", ap->a_bp);
264 vn_printf(ap->a_vp, "vnode ");
265 ap->a_bp->b_ioflags |= BIO_ERROR;
266 ap->a_bp->b_error = EOPNOTSUPP;
272 get_next_dirent(struct vnode *vp, struct dirent **dpp, char *dirbuf,
273 int dirbuflen, off_t *off, char **cpos, int *len,
274 int *eofflag, struct thread *td)
281 KASSERT(VOP_ISLOCKED(vp), ("vp %p is not locked", vp));
282 KASSERT(vp->v_type == VDIR, ("vp %p is not a directory", vp));
285 iov.iov_base = dirbuf;
286 iov.iov_len = dirbuflen;
290 uio.uio_offset = *off;
291 uio.uio_resid = dirbuflen;
292 uio.uio_segflg = UIO_SYSSPACE;
293 uio.uio_rw = UIO_READ;
299 error = mac_vnode_check_readdir(td->td_ucred, vp);
302 error = VOP_READDIR(vp, &uio, td->td_ucred, eofflag,
307 *off = uio.uio_offset;
310 *len = (dirbuflen - uio.uio_resid);
316 dp = (struct dirent *)(*cpos);
317 reclen = dp->d_reclen;
320 /* check for malformed directory.. */
321 if (reclen < DIRENT_MINSIZE)
331 * Check if a named file exists in a given directory vnode.
334 dirent_exists(struct vnode *vp, const char *dirname, struct thread *td)
337 int error, eofflag, dirbuflen, len, found;
342 KASSERT(VOP_ISLOCKED(vp), ("vp %p is not locked", vp));
343 KASSERT(vp->v_type == VDIR, ("vp %p is not a directory", vp));
347 error = VOP_GETATTR(vp, &va, td->td_ucred);
351 dirbuflen = DEV_BSIZE;
352 if (dirbuflen < va.va_blocksize)
353 dirbuflen = va.va_blocksize;
354 dirbuf = (char *)malloc(dirbuflen, M_TEMP, M_WAITOK);
359 error = get_next_dirent(vp, &dp, dirbuf, dirbuflen, &off,
360 &cpos, &len, &eofflag, td);
364 if (dp->d_type != DT_WHT && dp->d_fileno != 0 &&
365 strcmp(dp->d_name, dirname) == 0) {
369 } while (len > 0 || !eofflag);
372 free(dirbuf, M_TEMP);
377 vop_stdaccess(struct vop_access_args *ap)
380 KASSERT((ap->a_accmode & ~(VEXEC | VWRITE | VREAD | VADMIN |
381 VAPPEND)) == 0, ("invalid bit in accmode"));
383 return (VOP_ACCESSX(ap->a_vp, ap->a_accmode, ap->a_cred, ap->a_td));
387 vop_stdaccessx(struct vop_accessx_args *ap)
390 accmode_t accmode = ap->a_accmode;
392 error = vfs_unixify_accmode(&accmode);
399 return (VOP_ACCESS(ap->a_vp, accmode, ap->a_cred, ap->a_td));
403 * Advisory record locking support
406 vop_stdadvlock(struct vop_advlock_args *ap)
413 if (ap->a_fl->l_whence == SEEK_END) {
415 * The NFSv4 server must avoid doing a vn_lock() here, since it
416 * can deadlock the nfsd threads, due to a LOR. Fortunately
417 * the NFSv4 server always uses SEEK_SET and this code is
418 * only required for the SEEK_END case.
420 vn_lock(vp, LK_SHARED | LK_RETRY);
421 error = VOP_GETATTR(vp, &vattr, curthread->td_ucred);
428 return (lf_advlock(ap, &(vp->v_lockf), vattr.va_size));
432 vop_stdadvlockasync(struct vop_advlockasync_args *ap)
439 if (ap->a_fl->l_whence == SEEK_END) {
440 /* The size argument is only needed for SEEK_END. */
441 vn_lock(vp, LK_SHARED | LK_RETRY);
442 error = VOP_GETATTR(vp, &vattr, curthread->td_ucred);
449 return (lf_advlockasync(ap, &(vp->v_lockf), vattr.va_size));
453 vop_stdadvlockpurge(struct vop_advlockpurge_args *ap)
458 lf_purgelocks(vp, &vp->v_lockf);
465 * Standard implementation of POSIX pathconf, to get information about limits
467 * Override per filesystem for the case where the filesystem has smaller
472 struct vop_pathconf_args /* {
479 switch (ap->a_name) {
481 *ap->a_retval = _POSIX_ASYNCHRONOUS_IO;
484 *ap->a_retval = PATH_MAX;
486 case _PC_ACL_EXTENDED:
488 case _PC_CAP_PRESENT:
489 case _PC_INF_PRESENT:
490 case _PC_MAC_PRESENT:
500 * Standard lock, unlock and islocked functions.
504 struct vop_lock1_args /* {
511 struct vnode *vp = ap->a_vp;
515 return (lockmgr_lock_fast_path(vp->v_vnlock, ap->a_flags,
516 &ilk->lock_object, ap->a_file, ap->a_line));
522 struct vop_unlock_args /* {
527 struct vnode *vp = ap->a_vp;
531 return (lockmgr_unlock_fast_path(vp->v_vnlock, ap->a_flags,
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) {
611 * If the file system doesn't implement VOP_BMAP, then return sensible defaults:
612 * - Return the vnode's bufobj instead of any underlying device's bufobj
613 * - Calculate the physical block number as if there were equal size
614 * consecutive blocks, but
615 * - Report no contiguous runs of blocks.
619 struct vop_bmap_args /* {
622 struct bufobj **a_bop;
629 if (ap->a_bop != NULL)
630 *ap->a_bop = &ap->a_vp->v_bufobj;
631 if (ap->a_bnp != NULL)
632 *ap->a_bnp = ap->a_bn * btodb(ap->a_vp->v_mount->mnt_stat.f_iosize);
633 if (ap->a_runp != NULL)
635 if (ap->a_runb != NULL)
642 struct vop_fsync_args /* {
649 return (vn_fsync_buf(ap->a_vp, ap->a_waitfor));
653 vop_stdfdatasync(struct vop_fdatasync_args *ap)
656 return (VOP_FSYNC(ap->a_vp, MNT_WAIT, ap->a_td));
660 vop_stdfdatasync_buf(struct vop_fdatasync_args *ap)
663 return (vn_fsync_buf(ap->a_vp, MNT_WAIT));
666 /* XXX Needs good comment and more info in the manpage (VOP_GETPAGES(9)). */
669 struct vop_getpages_args /* {
678 return vnode_pager_generic_getpages(ap->a_vp, ap->a_m,
679 ap->a_count, ap->a_rbehind, ap->a_rahead, NULL, NULL);
683 vop_stdgetpages_async(struct vop_getpages_async_args *ap)
687 error = VOP_GETPAGES(ap->a_vp, ap->a_m, ap->a_count, ap->a_rbehind,
689 ap->a_iodone(ap->a_arg, ap->a_m, ap->a_count, error);
694 vop_stdkqfilter(struct vop_kqfilter_args *ap)
696 return vfs_kqfilter(ap);
699 /* XXX Needs good comment and more info in the manpage (VOP_PUTPAGES(9)). */
702 struct vop_putpages_args /* {
711 return vnode_pager_generic_putpages(ap->a_vp, ap->a_m, ap->a_count,
712 ap->a_sync, ap->a_rtvals);
716 vop_stdvptofh(struct vop_vptofh_args *ap)
722 vop_stdvptocnp(struct vop_vptocnp_args *ap)
724 struct vnode *vp = ap->a_vp;
725 struct vnode **dvp = ap->a_vpp;
726 struct ucred *cred = ap->a_cred;
727 char *buf = ap->a_buf;
728 int *buflen = ap->a_buflen;
730 int i, error, eofflag, dirbuflen, flags, locked, len, covered;
744 if (vp->v_type != VDIR)
747 error = VOP_GETATTR(vp, &va, cred);
752 locked = VOP_ISLOCKED(vp);
754 NDINIT_ATVP(&nd, LOOKUP, FOLLOW | LOCKSHARED | LOCKLEAF, UIO_SYSSPACE,
757 error = vn_open_cred(&nd, &flags, 0, VN_OPEN_NOAUDIT, cred, NULL);
759 vn_lock(vp, locked | LK_RETRY);
762 NDFREE(&nd, NDF_ONLY_PNBUF);
764 mvp = *dvp = nd.ni_vp;
766 if (vp->v_mount != (*dvp)->v_mount &&
767 ((*dvp)->v_vflag & VV_ROOT) &&
768 ((*dvp)->v_mount->mnt_flag & MNT_UNION)) {
769 *dvp = (*dvp)->v_mount->mnt_vnodecovered;
772 vn_close(mvp, FREAD, cred, td);
774 vn_lock(*dvp, LK_SHARED | LK_RETRY);
778 fileno = va.va_fileid;
780 dirbuflen = DEV_BSIZE;
781 if (dirbuflen < va.va_blocksize)
782 dirbuflen = va.va_blocksize;
783 dirbuf = (char *)malloc(dirbuflen, M_TEMP, M_WAITOK);
785 if ((*dvp)->v_type != VDIR) {
793 /* call VOP_READDIR of parent */
794 error = get_next_dirent(*dvp, &dp, dirbuf, dirbuflen, &off,
795 &cpos, &len, &eofflag, td);
799 if ((dp->d_type != DT_WHT) &&
800 (dp->d_fileno == fileno)) {
803 vn_lock(mvp, LK_SHARED | LK_RETRY);
804 if (dirent_exists(mvp, dp->d_name, td)) {
807 vn_lock(*dvp, LK_SHARED | LK_RETRY);
811 vn_lock(*dvp, LK_SHARED | LK_RETRY);
819 if (dp->d_namlen == 1 && dp->d_name[0] == '.') {
822 bcopy(dp->d_name, buf + i, dp->d_namlen);
827 } while (len > 0 || !eofflag);
831 free(dirbuf, M_TEMP);
841 vn_close(mvp, FREAD, cred, td);
843 vn_lock(vp, locked | LK_RETRY);
848 vop_stdallocate(struct vop_allocate_args *ap)
852 off_t maxfilesize = 0;
855 struct vattr vattr, *vap;
857 off_t fsize, len, cur, offset;
870 offset = *ap->a_offset;
872 error = VOP_GETATTR(vp, vap, td->td_ucred);
875 fsize = vap->va_size;
876 iosize = vap->va_blocksize;
878 iosize = BLKDEV_IOSIZE;
879 if (iosize > MAXPHYS)
881 buf = malloc(iosize, M_TEMP, M_WAITOK);
885 * Check if the filesystem sets f_maxfilesize; if not use
886 * VOP_SETATTR to perform the check.
888 sfs = malloc(sizeof(struct statfs), M_STATFS, M_WAITOK);
889 error = VFS_STATFS(vp->v_mount, sfs, td);
891 maxfilesize = sfs->f_maxfilesize;
896 if (offset > maxfilesize || len > maxfilesize ||
897 offset + len > maxfilesize) {
903 if (offset + len > vap->va_size) {
905 * Test offset + len against the filesystem's maxfilesize.
908 vap->va_size = offset + len;
909 error = VOP_SETATTR(vp, vap, td->td_ucred);
913 vap->va_size = fsize;
914 error = VOP_SETATTR(vp, vap, td->td_ucred);
921 * Read and write back anything below the nominal file
922 * size. There's currently no way outside the filesystem
923 * to know whether this area is sparse or not.
926 if ((offset % iosize) != 0)
927 cur -= (offset % iosize);
930 if (offset < fsize) {
933 auio.uio_iov = &aiov;
935 auio.uio_offset = offset;
936 auio.uio_resid = cur;
937 auio.uio_segflg = UIO_SYSSPACE;
938 auio.uio_rw = UIO_READ;
940 error = VOP_READ(vp, &auio, 0, td->td_ucred);
943 if (auio.uio_resid > 0) {
944 bzero(buf + cur - auio.uio_resid,
953 auio.uio_iov = &aiov;
955 auio.uio_offset = offset;
956 auio.uio_resid = cur;
957 auio.uio_segflg = UIO_SYSSPACE;
958 auio.uio_rw = UIO_WRITE;
961 error = VOP_WRITE(vp, &auio, 0, td->td_ucred);
975 *ap->a_offset = offset;
981 vop_stdadvise(struct vop_advise_args *ap)
985 daddr_t startn, endn;
986 off_t bstart, bend, start, end;
990 switch (ap->a_advice) {
991 case POSIX_FADV_WILLNEED:
993 * Do nothing for now. Filesystems should provide a
994 * custom method which starts an asynchronous read of
995 * the requested region.
999 case POSIX_FADV_DONTNEED:
1001 vn_lock(vp, LK_EXCLUSIVE | LK_RETRY);
1002 if (vp->v_iflag & VI_DOOMED) {
1008 * Round to block boundaries (and later possibly further to
1009 * page boundaries). Applications cannot reasonably be aware
1010 * of the boundaries, and the rounding must be to expand at
1011 * both extremities to cover enough. It still doesn't cover
1012 * read-ahead. For partial blocks, this gives unnecessary
1013 * discarding of buffers but is efficient enough since the
1014 * pages usually remain in VMIO for some time.
1016 bsize = vp->v_bufobj.bo_bsize;
1017 bstart = rounddown(ap->a_start, bsize);
1018 bend = roundup(ap->a_end, bsize);
1021 * Deactivate pages in the specified range from the backing VM
1022 * object. Pages that are resident in the buffer cache will
1023 * remain wired until their corresponding buffers are released
1026 if (vp->v_object != NULL) {
1027 start = trunc_page(bstart);
1028 end = round_page(bend);
1029 VM_OBJECT_RLOCK(vp->v_object);
1030 vm_object_page_noreuse(vp->v_object, OFF_TO_IDX(start),
1032 VM_OBJECT_RUNLOCK(vp->v_object);
1037 startn = bstart / bsize;
1038 endn = bend / bsize;
1039 error = bnoreuselist(&bo->bo_clean, bo, startn, endn);
1041 error = bnoreuselist(&bo->bo_dirty, bo, startn, endn);
1053 vop_stdunp_bind(struct vop_unp_bind_args *ap)
1056 ap->a_vp->v_unpcb = ap->a_unpcb;
1061 vop_stdunp_connect(struct vop_unp_connect_args *ap)
1064 *ap->a_unpcb = ap->a_vp->v_unpcb;
1069 vop_stdunp_detach(struct vop_unp_detach_args *ap)
1072 ap->a_vp->v_unpcb = NULL;
1077 vop_stdis_text(struct vop_is_text_args *ap)
1080 return (ap->a_vp->v_writecount < 0);
1084 vop_stdset_text(struct vop_set_text_args *ap)
1092 if (vp->v_writecount > 0) {
1096 * If requested by fs, keep a use reference to the
1097 * vnode until the last text reference is released.
1100 if (mp != NULL && (mp->mnt_kern_flag & MNTK_TEXT_REFS) != 0 &&
1101 vp->v_writecount == 0) {
1102 vp->v_iflag |= VI_TEXT_REF;
1114 vop_stdunset_text(struct vop_unset_text_args *ap)
1123 if (vp->v_writecount < 0) {
1124 if ((vp->v_iflag & VI_TEXT_REF) != 0 &&
1125 vp->v_writecount == -1) {
1127 vp->v_iflag &= ~VI_TEXT_REF;
1141 vop_stdadd_writecount(struct vop_add_writecount_args *ap)
1147 VI_LOCK_FLAGS(vp, MTX_DUPOK);
1148 if (vp->v_writecount < 0) {
1151 VNASSERT(vp->v_writecount + ap->a_inc >= 0, vp,
1152 ("neg writecount increment %d", ap->a_inc));
1153 vp->v_writecount += ap->a_inc;
1161 vop_stdioctl(struct vop_ioctl_args *ap)
1168 switch (ap->a_command) {
1172 error = vn_lock(vp, LK_SHARED);
1175 if (vp->v_type == VREG)
1176 error = VOP_GETATTR(vp, &va, ap->a_cred);
1181 if (*offp < 0 || *offp >= va.va_size)
1183 else if (ap->a_command == FIOSEEKHOLE)
1197 * used to fill the vfs function table to get reasonable default return values.
1200 vfs_stdroot (mp, flags, vpp)
1206 return (EOPNOTSUPP);
1210 vfs_stdstatfs (mp, sbp)
1215 return (EOPNOTSUPP);
1219 vfs_stdquotactl (mp, cmds, uid, arg)
1226 return (EOPNOTSUPP);
1230 vfs_stdsync(mp, waitfor)
1234 struct vnode *vp, *mvp;
1236 int error, lockreq, allerror = 0;
1239 lockreq = LK_EXCLUSIVE | LK_INTERLOCK;
1240 if (waitfor != MNT_WAIT)
1241 lockreq |= LK_NOWAIT;
1243 * Force stale buffer cache information to be flushed.
1246 MNT_VNODE_FOREACH_ALL(vp, mp, mvp) {
1247 if (vp->v_bufobj.bo_dirty.bv_cnt == 0) {
1251 if ((error = vget(vp, lockreq, td)) != 0) {
1252 if (error == ENOENT) {
1253 MNT_VNODE_FOREACH_ALL_ABORT(mp, mvp);
1258 error = VOP_FSYNC(vp, waitfor, td);
1267 vfs_stdnosync (mp, waitfor)
1276 vop_stdcopy_file_range(struct vop_copy_file_range_args *ap)
1280 error = vn_generic_copy_file_range(ap->a_invp, ap->a_inoffp,
1281 ap->a_outvp, ap->a_outoffp, ap->a_lenp, ap->a_flags, ap->a_incred,
1282 ap->a_outcred, ap->a_fsizetd);
1287 vfs_stdvget (mp, ino, flags, vpp)
1294 return (EOPNOTSUPP);
1298 vfs_stdfhtovp (mp, fhp, flags, vpp)
1305 return (EOPNOTSUPP);
1310 struct vfsconf *vfsp;
1317 vfs_stduninit (vfsp)
1318 struct vfsconf *vfsp;
1325 vfs_stdextattrctl(mp, cmd, filename_vp, attrnamespace, attrname)
1328 struct vnode *filename_vp;
1330 const char *attrname;
1333 if (filename_vp != NULL)
1334 VOP_UNLOCK(filename_vp, 0);
1335 return (EOPNOTSUPP);
1339 vfs_stdsysctl(mp, op, req)
1342 struct sysctl_req *req;
1345 return (EOPNOTSUPP);
1348 static vop_bypass_t *
1349 bp_by_off(struct vop_vector *vop, struct vop_generic_args *a)
1352 return (*(vop_bypass_t **)((char *)vop + a->a_desc->vdesc_vop_offset));
1356 vop_sigdefer(struct vop_vector *vop, struct vop_generic_args *a)
1361 for (; vop != NULL; vop = vop->vop_default) {
1362 bp = bp_by_off(vop, a);
1367 * Bypass is not really supported. It is done for
1368 * fallback to unimplemented vops in the default
1371 bp = vop->vop_bypass;
1377 prev_stops = sigdeferstop(SIGDEFERSTOP_SILENT);
1379 sigallowstop(prev_stops);