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_need_inactive = vop_stdneed_inactive,
124 .vop_ioctl = vop_stdioctl,
125 .vop_kqfilter = vop_stdkqfilter,
126 .vop_islocked = vop_stdislocked,
127 .vop_lock1 = vop_stdlock,
128 .vop_lookup = vop_nolookup,
129 .vop_open = VOP_NULL,
130 .vop_pathconf = VOP_EINVAL,
131 .vop_poll = vop_nopoll,
132 .vop_putpages = vop_stdputpages,
133 .vop_readlink = VOP_EINVAL,
134 .vop_rename = vop_norename,
135 .vop_revoke = VOP_PANIC,
136 .vop_strategy = vop_nostrategy,
137 .vop_unlock = vop_stdunlock,
138 .vop_vptocnp = vop_stdvptocnp,
139 .vop_vptofh = vop_stdvptofh,
140 .vop_unp_bind = vop_stdunp_bind,
141 .vop_unp_connect = vop_stdunp_connect,
142 .vop_unp_detach = vop_stdunp_detach,
143 .vop_is_text = vop_stdis_text,
144 .vop_set_text = vop_stdset_text,
145 .vop_unset_text = vop_stdunset_text,
146 .vop_add_writecount = vop_stdadd_writecount,
147 .vop_copy_file_range = vop_stdcopy_file_range,
151 * Series of placeholder functions for various error returns for
156 vop_eopnotsupp(struct vop_generic_args *ap)
159 printf("vop_notsupp[%s]\n", ap->a_desc->vdesc_name);
166 vop_ebadf(struct vop_generic_args *ap)
173 vop_enotty(struct vop_generic_args *ap)
180 vop_einval(struct vop_generic_args *ap)
187 vop_enoent(struct vop_generic_args *ap)
194 vop_null(struct vop_generic_args *ap)
201 * Helper function to panic on some bad VOPs in some filesystems.
204 vop_panic(struct vop_generic_args *ap)
207 panic("filesystem goof: vop_panic[%s]", ap->a_desc->vdesc_name);
211 * vop_std<something> and vop_no<something> are default functions for use by
212 * filesystems that need the "default reasonable" implementation for a
213 * particular operation.
215 * The documentation for the operations they implement exists (if it exists)
216 * in the VOP_<SOMETHING>(9) manpage (all uppercase).
220 * Default vop for filesystems that do not support name lookup
224 struct vop_lookup_args /* {
226 struct vnode **a_vpp;
227 struct componentname *a_cnp;
238 * Handle unlock and reference counting for arguments of vop_rename
239 * for filesystems that do not implement rename operation.
242 vop_norename(struct vop_rename_args *ap)
252 * Strategy routine for VFS devices that have none.
254 * BIO_ERROR and B_INVAL must be cleared prior to calling any strategy
255 * routine. Typically this is done for a BIO_READ strategy call.
256 * Typically B_INVAL is assumed to already be clear prior to a write
257 * and should not be cleared manually unless you just made the buffer
258 * invalid. BIO_ERROR should be cleared either way.
262 vop_nostrategy (struct vop_strategy_args *ap)
264 printf("No strategy for buffer at %p\n", ap->a_bp);
265 vn_printf(ap->a_vp, "vnode ");
266 ap->a_bp->b_ioflags |= BIO_ERROR;
267 ap->a_bp->b_error = EOPNOTSUPP;
273 get_next_dirent(struct vnode *vp, struct dirent **dpp, char *dirbuf,
274 int dirbuflen, off_t *off, char **cpos, int *len,
275 int *eofflag, struct thread *td)
282 KASSERT(VOP_ISLOCKED(vp), ("vp %p is not locked", vp));
283 KASSERT(vp->v_type == VDIR, ("vp %p is not a directory", vp));
286 iov.iov_base = dirbuf;
287 iov.iov_len = dirbuflen;
291 uio.uio_offset = *off;
292 uio.uio_resid = dirbuflen;
293 uio.uio_segflg = UIO_SYSSPACE;
294 uio.uio_rw = UIO_READ;
300 error = mac_vnode_check_readdir(td->td_ucred, vp);
303 error = VOP_READDIR(vp, &uio, td->td_ucred, eofflag,
308 *off = uio.uio_offset;
311 *len = (dirbuflen - uio.uio_resid);
317 dp = (struct dirent *)(*cpos);
318 reclen = dp->d_reclen;
321 /* check for malformed directory.. */
322 if (reclen < DIRENT_MINSIZE)
332 * Check if a named file exists in a given directory vnode.
335 dirent_exists(struct vnode *vp, const char *dirname, struct thread *td)
338 int error, eofflag, dirbuflen, len, found;
343 KASSERT(VOP_ISLOCKED(vp), ("vp %p is not locked", vp));
344 KASSERT(vp->v_type == VDIR, ("vp %p is not a directory", vp));
348 error = VOP_GETATTR(vp, &va, td->td_ucred);
352 dirbuflen = DEV_BSIZE;
353 if (dirbuflen < va.va_blocksize)
354 dirbuflen = va.va_blocksize;
355 dirbuf = (char *)malloc(dirbuflen, M_TEMP, M_WAITOK);
360 error = get_next_dirent(vp, &dp, dirbuf, dirbuflen, &off,
361 &cpos, &len, &eofflag, td);
365 if (dp->d_type != DT_WHT && dp->d_fileno != 0 &&
366 strcmp(dp->d_name, dirname) == 0) {
370 } while (len > 0 || !eofflag);
373 free(dirbuf, M_TEMP);
378 vop_stdaccess(struct vop_access_args *ap)
381 KASSERT((ap->a_accmode & ~(VEXEC | VWRITE | VREAD | VADMIN |
382 VAPPEND)) == 0, ("invalid bit in accmode"));
384 return (VOP_ACCESSX(ap->a_vp, ap->a_accmode, ap->a_cred, ap->a_td));
388 vop_stdaccessx(struct vop_accessx_args *ap)
391 accmode_t accmode = ap->a_accmode;
393 error = vfs_unixify_accmode(&accmode);
400 return (VOP_ACCESS(ap->a_vp, accmode, ap->a_cred, ap->a_td));
404 * Advisory record locking support
407 vop_stdadvlock(struct vop_advlock_args *ap)
414 if (ap->a_fl->l_whence == SEEK_END) {
416 * The NFSv4 server must avoid doing a vn_lock() here, since it
417 * can deadlock the nfsd threads, due to a LOR. Fortunately
418 * the NFSv4 server always uses SEEK_SET and this code is
419 * only required for the SEEK_END case.
421 vn_lock(vp, LK_SHARED | LK_RETRY);
422 error = VOP_GETATTR(vp, &vattr, curthread->td_ucred);
429 return (lf_advlock(ap, &(vp->v_lockf), vattr.va_size));
433 vop_stdadvlockasync(struct vop_advlockasync_args *ap)
440 if (ap->a_fl->l_whence == SEEK_END) {
441 /* The size argument is only needed for SEEK_END. */
442 vn_lock(vp, LK_SHARED | LK_RETRY);
443 error = VOP_GETATTR(vp, &vattr, curthread->td_ucred);
450 return (lf_advlockasync(ap, &(vp->v_lockf), vattr.va_size));
454 vop_stdadvlockpurge(struct vop_advlockpurge_args *ap)
459 lf_purgelocks(vp, &vp->v_lockf);
466 * Standard implementation of POSIX pathconf, to get information about limits
468 * Override per filesystem for the case where the filesystem has smaller
473 struct vop_pathconf_args /* {
480 switch (ap->a_name) {
482 *ap->a_retval = _POSIX_ASYNCHRONOUS_IO;
485 *ap->a_retval = PATH_MAX;
487 case _PC_ACL_EXTENDED:
489 case _PC_CAP_PRESENT:
490 case _PC_INF_PRESENT:
491 case _PC_MAC_PRESENT:
501 * Standard lock, unlock and islocked functions.
505 struct vop_lock1_args /* {
512 struct vnode *vp = ap->a_vp;
516 return (lockmgr_lock_fast_path(vp->v_vnlock, ap->a_flags,
517 &ilk->lock_object, ap->a_file, ap->a_line));
523 struct vop_unlock_args /* {
528 struct vnode *vp = ap->a_vp;
532 return (lockmgr_unlock_fast_path(vp->v_vnlock, ap->a_flags,
539 struct vop_islocked_args /* {
544 return (lockstatus(ap->a_vp->v_vnlock));
548 * Return true for select/poll.
552 struct vop_poll_args /* {
555 struct ucred *a_cred;
560 return (poll_no_poll(ap->a_events));
564 * Implement poll for local filesystems that support it.
568 struct vop_poll_args /* {
571 struct ucred *a_cred;
575 if (ap->a_events & ~POLLSTANDARD)
576 return (vn_pollrecord(ap->a_vp, ap->a_td, ap->a_events));
577 return (ap->a_events & (POLLIN | POLLOUT | POLLRDNORM | POLLWRNORM));
581 * Return our mount point, as we will take charge of the writes.
584 vop_stdgetwritemount(ap)
585 struct vop_getwritemount_args /* {
587 struct mount **a_mpp;
594 * Note that having a reference does not prevent forced unmount from
595 * setting ->v_mount to NULL after the lock gets released. This is of
596 * no consequence for typical consumers (most notably vn_start_write)
597 * since in this case the vnode is VI_DOOMED. Unmount might have
598 * progressed far enough that its completion is only delayed by the
599 * reference obtained here. The consumer only needs to concern itself
608 if (vfs_op_thread_enter(mp)) {
609 if (mp == vp->v_mount)
610 vfs_mp_count_add_pcpu(mp, ref, 1);
613 vfs_op_thread_exit(mp);
616 if (mp == vp->v_mount)
627 * If the file system doesn't implement VOP_BMAP, then return sensible defaults:
628 * - Return the vnode's bufobj instead of any underlying device's bufobj
629 * - Calculate the physical block number as if there were equal size
630 * consecutive blocks, but
631 * - Report no contiguous runs of blocks.
635 struct vop_bmap_args /* {
638 struct bufobj **a_bop;
645 if (ap->a_bop != NULL)
646 *ap->a_bop = &ap->a_vp->v_bufobj;
647 if (ap->a_bnp != NULL)
648 *ap->a_bnp = ap->a_bn * btodb(ap->a_vp->v_mount->mnt_stat.f_iosize);
649 if (ap->a_runp != NULL)
651 if (ap->a_runb != NULL)
658 struct vop_fsync_args /* {
665 return (vn_fsync_buf(ap->a_vp, ap->a_waitfor));
669 vop_stdfdatasync(struct vop_fdatasync_args *ap)
672 return (VOP_FSYNC(ap->a_vp, MNT_WAIT, ap->a_td));
676 vop_stdfdatasync_buf(struct vop_fdatasync_args *ap)
679 return (vn_fsync_buf(ap->a_vp, MNT_WAIT));
682 /* XXX Needs good comment and more info in the manpage (VOP_GETPAGES(9)). */
685 struct vop_getpages_args /* {
694 return vnode_pager_generic_getpages(ap->a_vp, ap->a_m,
695 ap->a_count, ap->a_rbehind, ap->a_rahead, NULL, NULL);
699 vop_stdgetpages_async(struct vop_getpages_async_args *ap)
703 error = VOP_GETPAGES(ap->a_vp, ap->a_m, ap->a_count, ap->a_rbehind,
705 ap->a_iodone(ap->a_arg, ap->a_m, ap->a_count, error);
710 vop_stdkqfilter(struct vop_kqfilter_args *ap)
712 return vfs_kqfilter(ap);
715 /* XXX Needs good comment and more info in the manpage (VOP_PUTPAGES(9)). */
718 struct vop_putpages_args /* {
727 return vnode_pager_generic_putpages(ap->a_vp, ap->a_m, ap->a_count,
728 ap->a_sync, ap->a_rtvals);
732 vop_stdvptofh(struct vop_vptofh_args *ap)
738 vop_stdvptocnp(struct vop_vptocnp_args *ap)
740 struct vnode *vp = ap->a_vp;
741 struct vnode **dvp = ap->a_vpp;
742 struct ucred *cred = ap->a_cred;
743 char *buf = ap->a_buf;
744 int *buflen = ap->a_buflen;
746 int i, error, eofflag, dirbuflen, flags, locked, len, covered;
760 if (vp->v_type != VDIR)
763 error = VOP_GETATTR(vp, &va, cred);
768 locked = VOP_ISLOCKED(vp);
770 NDINIT_ATVP(&nd, LOOKUP, FOLLOW | LOCKSHARED | LOCKLEAF, UIO_SYSSPACE,
773 error = vn_open_cred(&nd, &flags, 0, VN_OPEN_NOAUDIT, cred, NULL);
775 vn_lock(vp, locked | LK_RETRY);
778 NDFREE(&nd, NDF_ONLY_PNBUF);
780 mvp = *dvp = nd.ni_vp;
782 if (vp->v_mount != (*dvp)->v_mount &&
783 ((*dvp)->v_vflag & VV_ROOT) &&
784 ((*dvp)->v_mount->mnt_flag & MNT_UNION)) {
785 *dvp = (*dvp)->v_mount->mnt_vnodecovered;
788 vn_close(mvp, FREAD, cred, td);
790 vn_lock(*dvp, LK_SHARED | LK_RETRY);
794 fileno = va.va_fileid;
796 dirbuflen = DEV_BSIZE;
797 if (dirbuflen < va.va_blocksize)
798 dirbuflen = va.va_blocksize;
799 dirbuf = (char *)malloc(dirbuflen, M_TEMP, M_WAITOK);
801 if ((*dvp)->v_type != VDIR) {
809 /* call VOP_READDIR of parent */
810 error = get_next_dirent(*dvp, &dp, dirbuf, dirbuflen, &off,
811 &cpos, &len, &eofflag, td);
815 if ((dp->d_type != DT_WHT) &&
816 (dp->d_fileno == fileno)) {
819 vn_lock(mvp, LK_SHARED | LK_RETRY);
820 if (dirent_exists(mvp, dp->d_name, td)) {
823 vn_lock(*dvp, LK_SHARED | LK_RETRY);
827 vn_lock(*dvp, LK_SHARED | LK_RETRY);
835 if (dp->d_namlen == 1 && dp->d_name[0] == '.') {
838 bcopy(dp->d_name, buf + i, dp->d_namlen);
843 } while (len > 0 || !eofflag);
847 free(dirbuf, M_TEMP);
857 vn_close(mvp, FREAD, cred, td);
859 vn_lock(vp, locked | LK_RETRY);
864 vop_stdallocate(struct vop_allocate_args *ap)
868 off_t maxfilesize = 0;
871 struct vattr vattr, *vap;
873 off_t fsize, len, cur, offset;
886 offset = *ap->a_offset;
888 error = VOP_GETATTR(vp, vap, td->td_ucred);
891 fsize = vap->va_size;
892 iosize = vap->va_blocksize;
894 iosize = BLKDEV_IOSIZE;
895 if (iosize > MAXPHYS)
897 buf = malloc(iosize, M_TEMP, M_WAITOK);
901 * Check if the filesystem sets f_maxfilesize; if not use
902 * VOP_SETATTR to perform the check.
904 sfs = malloc(sizeof(struct statfs), M_STATFS, M_WAITOK);
905 error = VFS_STATFS(vp->v_mount, sfs, td);
907 maxfilesize = sfs->f_maxfilesize;
912 if (offset > maxfilesize || len > maxfilesize ||
913 offset + len > maxfilesize) {
919 if (offset + len > vap->va_size) {
921 * Test offset + len against the filesystem's maxfilesize.
924 vap->va_size = offset + len;
925 error = VOP_SETATTR(vp, vap, td->td_ucred);
929 vap->va_size = fsize;
930 error = VOP_SETATTR(vp, vap, td->td_ucred);
937 * Read and write back anything below the nominal file
938 * size. There's currently no way outside the filesystem
939 * to know whether this area is sparse or not.
942 if ((offset % iosize) != 0)
943 cur -= (offset % iosize);
946 if (offset < fsize) {
949 auio.uio_iov = &aiov;
951 auio.uio_offset = offset;
952 auio.uio_resid = cur;
953 auio.uio_segflg = UIO_SYSSPACE;
954 auio.uio_rw = UIO_READ;
956 error = VOP_READ(vp, &auio, 0, td->td_ucred);
959 if (auio.uio_resid > 0) {
960 bzero(buf + cur - auio.uio_resid,
969 auio.uio_iov = &aiov;
971 auio.uio_offset = offset;
972 auio.uio_resid = cur;
973 auio.uio_segflg = UIO_SYSSPACE;
974 auio.uio_rw = UIO_WRITE;
977 error = VOP_WRITE(vp, &auio, 0, td->td_ucred);
991 *ap->a_offset = offset;
997 vop_stdadvise(struct vop_advise_args *ap)
1001 daddr_t startn, endn;
1002 off_t bstart, bend, start, end;
1006 switch (ap->a_advice) {
1007 case POSIX_FADV_WILLNEED:
1009 * Do nothing for now. Filesystems should provide a
1010 * custom method which starts an asynchronous read of
1011 * the requested region.
1015 case POSIX_FADV_DONTNEED:
1017 vn_lock(vp, LK_EXCLUSIVE | LK_RETRY);
1018 if (vp->v_iflag & VI_DOOMED) {
1024 * Round to block boundaries (and later possibly further to
1025 * page boundaries). Applications cannot reasonably be aware
1026 * of the boundaries, and the rounding must be to expand at
1027 * both extremities to cover enough. It still doesn't cover
1028 * read-ahead. For partial blocks, this gives unnecessary
1029 * discarding of buffers but is efficient enough since the
1030 * pages usually remain in VMIO for some time.
1032 bsize = vp->v_bufobj.bo_bsize;
1033 bstart = rounddown(ap->a_start, bsize);
1034 bend = roundup(ap->a_end, bsize);
1037 * Deactivate pages in the specified range from the backing VM
1038 * object. Pages that are resident in the buffer cache will
1039 * remain wired until their corresponding buffers are released
1042 if (vp->v_object != NULL) {
1043 start = trunc_page(bstart);
1044 end = round_page(bend);
1045 VM_OBJECT_RLOCK(vp->v_object);
1046 vm_object_page_noreuse(vp->v_object, OFF_TO_IDX(start),
1048 VM_OBJECT_RUNLOCK(vp->v_object);
1053 startn = bstart / bsize;
1054 endn = bend / bsize;
1055 error = bnoreuselist(&bo->bo_clean, bo, startn, endn);
1057 error = bnoreuselist(&bo->bo_dirty, bo, startn, endn);
1069 vop_stdunp_bind(struct vop_unp_bind_args *ap)
1072 ap->a_vp->v_unpcb = ap->a_unpcb;
1077 vop_stdunp_connect(struct vop_unp_connect_args *ap)
1080 *ap->a_unpcb = ap->a_vp->v_unpcb;
1085 vop_stdunp_detach(struct vop_unp_detach_args *ap)
1088 ap->a_vp->v_unpcb = NULL;
1093 vop_stdis_text(struct vop_is_text_args *ap)
1096 return (ap->a_vp->v_writecount < 0);
1100 vop_stdset_text(struct vop_set_text_args *ap)
1108 if (vp->v_writecount > 0) {
1112 * If requested by fs, keep a use reference to the
1113 * vnode until the last text reference is released.
1116 if (mp != NULL && (mp->mnt_kern_flag & MNTK_TEXT_REFS) != 0 &&
1117 vp->v_writecount == 0) {
1118 vp->v_iflag |= VI_TEXT_REF;
1130 vop_stdunset_text(struct vop_unset_text_args *ap)
1139 if (vp->v_writecount < 0) {
1140 if ((vp->v_iflag & VI_TEXT_REF) != 0 &&
1141 vp->v_writecount == -1) {
1143 vp->v_iflag &= ~VI_TEXT_REF;
1157 vop_stdadd_writecount(struct vop_add_writecount_args *ap)
1163 VI_LOCK_FLAGS(vp, MTX_DUPOK);
1164 if (vp->v_writecount < 0) {
1167 VNASSERT(vp->v_writecount + ap->a_inc >= 0, vp,
1168 ("neg writecount increment %d", ap->a_inc));
1169 vp->v_writecount += ap->a_inc;
1177 vop_stdneed_inactive(struct vop_need_inactive_args *ap)
1184 vop_stdioctl(struct vop_ioctl_args *ap)
1191 switch (ap->a_command) {
1195 error = vn_lock(vp, LK_SHARED);
1198 if (vp->v_type == VREG)
1199 error = VOP_GETATTR(vp, &va, ap->a_cred);
1204 if (*offp < 0 || *offp >= va.va_size)
1206 else if (ap->a_command == FIOSEEKHOLE)
1220 * used to fill the vfs function table to get reasonable default return values.
1223 vfs_stdroot (mp, flags, vpp)
1229 return (EOPNOTSUPP);
1233 vfs_stdstatfs (mp, sbp)
1238 return (EOPNOTSUPP);
1242 vfs_stdquotactl (mp, cmds, uid, arg)
1249 return (EOPNOTSUPP);
1253 vfs_stdsync(mp, waitfor)
1257 struct vnode *vp, *mvp;
1259 int error, lockreq, allerror = 0;
1262 lockreq = LK_EXCLUSIVE | LK_INTERLOCK;
1263 if (waitfor != MNT_WAIT)
1264 lockreq |= LK_NOWAIT;
1266 * Force stale buffer cache information to be flushed.
1269 MNT_VNODE_FOREACH_ALL(vp, mp, mvp) {
1270 if (vp->v_bufobj.bo_dirty.bv_cnt == 0) {
1274 if ((error = vget(vp, lockreq, td)) != 0) {
1275 if (error == ENOENT) {
1276 MNT_VNODE_FOREACH_ALL_ABORT(mp, mvp);
1281 error = VOP_FSYNC(vp, waitfor, td);
1290 vfs_stdnosync (mp, waitfor)
1299 vop_stdcopy_file_range(struct vop_copy_file_range_args *ap)
1303 error = vn_generic_copy_file_range(ap->a_invp, ap->a_inoffp,
1304 ap->a_outvp, ap->a_outoffp, ap->a_lenp, ap->a_flags, ap->a_incred,
1305 ap->a_outcred, ap->a_fsizetd);
1310 vfs_stdvget (mp, ino, flags, vpp)
1317 return (EOPNOTSUPP);
1321 vfs_stdfhtovp (mp, fhp, flags, vpp)
1328 return (EOPNOTSUPP);
1333 struct vfsconf *vfsp;
1340 vfs_stduninit (vfsp)
1341 struct vfsconf *vfsp;
1348 vfs_stdextattrctl(mp, cmd, filename_vp, attrnamespace, attrname)
1351 struct vnode *filename_vp;
1353 const char *attrname;
1356 if (filename_vp != NULL)
1357 VOP_UNLOCK(filename_vp, 0);
1358 return (EOPNOTSUPP);
1362 vfs_stdsysctl(mp, op, req)
1365 struct sysctl_req *req;
1368 return (EOPNOTSUPP);
1371 static vop_bypass_t *
1372 bp_by_off(struct vop_vector *vop, struct vop_generic_args *a)
1375 return (*(vop_bypass_t **)((char *)vop + a->a_desc->vdesc_vop_offset));
1379 vop_sigdefer(struct vop_vector *vop, struct vop_generic_args *a)
1384 for (; vop != NULL; vop = vop->vop_default) {
1385 bp = bp_by_off(vop, a);
1390 * Bypass is not really supported. It is done for
1391 * fallback to unimplemented vops in the default
1394 bp = vop->vop_bypass;
1400 prev_stops = sigdeferstop(SIGDEFERSTOP_SILENT);
1402 sigallowstop(prev_stops);