This is xnu-11215.1.10. See this file in:
/*
* Copyright (c) 2000-2019 Apple Inc. All rights reserved.
*
* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
*
* This file contains Original Code and/or Modifications of Original Code
* as defined in and that are subject to the Apple Public Source License
* Version 2.0 (the 'License'). You may not use this file except in
* compliance with the License. The rights granted to you under the License
* may not be used to create, or enable the creation or redistribution of,
* unlawful or unlicensed copies of an Apple operating system, or to
* circumvent, violate, or enable the circumvention or violation of, any
* terms of an Apple operating system software license agreement.
*
* Please obtain a copy of the License at
* http://www.opensource.apple.com/apsl/ and read it before using this file.
*
* The Original Code and all software distributed under the License are
* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
* Please see the License for the specific language governing rights and
* limitations under the License.
*
* @APPLE_OSREFERENCE_LICENSE_HEADER_END@
*/
/* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */
/*
* Copyright (c) 1992, 1993
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software donated to Berkeley by
* Jan-Simon Pendry.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* @(#)fdesc_vnops.c 8.17 (Berkeley) 5/22/95
*
*/
/*
* /dev/fd Filesystem
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/types.h>
#include <sys/time.h>
#include <sys/proc_internal.h>
#include <sys/kernel.h> /* boottime */
#include <sys/resourcevar.h>
#include <sys/filedesc.h>
#include <sys/kauth.h>
#include <sys/vnode_internal.h>
#include <sys/malloc.h>
#include <sys/file_internal.h>
#include <sys/stat.h>
#include <sys/mount_internal.h>
#include <sys/namei.h>
#include <sys/dirent.h>
#include <sys/ubc.h>
#include <sys/socketvar.h>
#include <sys/pipe.h>
#include <sys/uio_internal.h>
#include <vfs/vfs_support.h>
#include <pexpert/pexpert.h>
#include <miscfs/devfs/fdesc.h>
#include <miscfs/devfs/devfs.h>
#include <miscfs/devfs/devfsdefs.h>
#define FDL_WANT 0x01
#define FDL_LOCKED 0x02
static int fdcache_lock;
#if (FD_STDIN != FD_STDOUT - 1) || (FD_STDOUT != FD_STDERR - 1)
FD_STDIN, FD_STDOUT, FD_STDERR must be a sequence n, n + 1, n + 2
#endif
#define NFDCACHE 3
#define FD_NHASH(ix) \
(&fdhashtbl[(ix) & fdhash])
LIST_HEAD(fdhashhead, fdescnode) * fdhashtbl;
u_long fdhash;
static int fdesc_attr(int fd, struct vnode_attr *vap, vfs_context_t a_context);
static LCK_GRP_DECLARE(fdesc_lckgrp, "fdesc");
static LCK_MTX_DECLARE(fdesc_mtx, &fdesc_lckgrp);
static void
fdesc_lock(void)
{
lck_mtx_lock(&fdesc_mtx);
}
static void
fdesc_unlock(void)
{
lck_mtx_unlock(&fdesc_mtx);
}
/*
* Initialise cache headers, create the devfs node
*/
int
devfs_fdesc_init()
{
int error = 0;
devnode_t *rootdir = dev_root->de_dnp;
devdirent_t *direntp;
/* XXX Make sure you have the right path... */
fdhashtbl = hashinit(NFDCACHE, M_CACHE, &fdhash);
DEVFS_LOCK();
dev_add_entry("fd", rootdir, DEV_DEVFD, NULL, NULL, NULL, &direntp);
devfs_fdesc_makelinks();
DEVFS_UNLOCK();
return error;
}
/*
* Called during early startup, no need to synchronize
*/
int
devfs_fdesc_makelinks()
{
int error = 0;
devdirent_t *stdin_ent = NULL, *stdout_ent = NULL, *stderr_ent = NULL;
devnode_t *root_devnode = dev_root->de_dnp;
/* We do this ugliness to get around some "const" warnings */
char in[] = "stdin";
char out[] = "stdout";
char err[] = "stderr";
char zero[] = "fd/0";
char one[] = "fd/1";
char two[] = "fd/2";
if ((error = devfs_make_symlink(root_devnode, in, 0555, zero, &stdin_ent))) {
printf("Couldn't make stdin, err %d.\n", error);
goto bad;
}
if ((error = devfs_make_symlink(root_devnode, out, 0555, one, &stdout_ent))) {
printf("Couldn't make stdout, err %d.\n", error);
goto bad;
}
if ((error = devfs_make_symlink(root_devnode, err, 0555, two, &stderr_ent))) {
printf("Couldn't make stderr, err %d.\n", error);
goto bad;
}
return 0;
bad:
if (stdin_ent) {
dev_free_name(stdin_ent);
}
if (stdout_ent) {
dev_free_name(stdout_ent);
}
if (stderr_ent) {
dev_free_name(stderr_ent);
}
return error;
}
int
fdesc_allocvp(fdntype ftype, int ix, struct mount *mp, struct vnode **vpp, enum vtype vtype, int fdno)
{
struct fdhashhead *fc;
struct fdescnode *fd;
int error = 0;
int vid = 0;
struct vnode_fsparam vfsp;
struct vnode *vp;
fdesc_lock();
fc = FD_NHASH(ix);
loop:
for (fd = fc->lh_first; fd != 0; fd = fd->fd_hash.le_next) {
if (fd->fd_ix == ix && vnode_mount(fd->fd_vnode) == mp) {
vid = vnode_vid(fd->fd_vnode);
vp = fd->fd_vnode;
vnode_hold(vp);
fdesc_unlock();
if (vnode_getwithvid(vp, vid)) {
vnode_drop(vp);
fdesc_lock();
goto loop;
}
vnode_drop(vp);
*vpp = vp;
(*vpp)->v_type = (uint16_t)vtype;
return error;
}
}
/* Only one thread can add to the hash at a time */
if (fdcache_lock & FDL_LOCKED) {
fdcache_lock |= FDL_WANT;
msleep((caddr_t) &fdcache_lock, &fdesc_mtx, PINOD, "fdesc_allocvp", NULL);
goto loop;
}
fdcache_lock |= FDL_LOCKED;
fdesc_unlock();
fd = kalloc_type(struct fdescnode, Z_WAITOK);
vfsp.vnfs_mp = mp;
vfsp.vnfs_vtype = vtype;
vfsp.vnfs_str = "fdesc";
vfsp.vnfs_dvp = NULL;
vfsp.vnfs_fsnode = fd;
vfsp.vnfs_cnp = NULL;
vfsp.vnfs_vops = fdesc_vnodeop_p;
vfsp.vnfs_rdev = 0;
vfsp.vnfs_filesize = 0;
vfsp.vnfs_flags = VNFS_NOCACHE | VNFS_CANTCACHE;
vfsp.vnfs_marksystem = 0;
vfsp.vnfs_markroot = 0;
error = vnode_create_ext(VNCREATE_FLAVOR, VCREATESIZE, &vfsp, vpp,
VNODE_CREATE_DEFAULT);
if (error) {
kfree_type(struct fdescnode, fd);
fdesc_lock();
goto out;
}
(*vpp)->v_tag = VT_FDESC;
fd->fd_vnode = *vpp;
fd->fd_type = ftype;
fd->fd_fd = fdno;
fd->fd_link = NULL;
fd->fd_ix = ix;
fdesc_lock();
LIST_INSERT_HEAD(fc, fd, fd_hash);
out:
/* Hold the lock when we get here */
fdcache_lock &= ~FDL_LOCKED;
if (fdcache_lock & FDL_WANT) {
fdcache_lock &= ~FDL_WANT;
wakeup((caddr_t) &fdcache_lock);
}
fdesc_unlock();
return error;
}
/*
* vp is the current namei directory
* ndp is the name to locate in that directory...
*
* This vnop should only be called on the special directory /dev/fd.
*/
int
devfs_devfd_lookup(struct vnop_lookup_args *ap)
{
struct vnode **vpp = ap->a_vpp;
struct vnode *dvp = ap->a_dvp;
struct componentname *cnp = ap->a_cnp;
char *pname = cnp->cn_nameptr;
struct proc *p = vfs_context_proc(ap->a_context);
int numfiles = p->p_fd.fd_nfiles;
int fd;
int error;
struct vnode *fvp;
if (cnp->cn_namelen == 1 && *pname == '.') {
*vpp = dvp;
if ((error = vnode_get(dvp))) {
goto bad;
}
return 0;
}
fd = 0;
while (*pname >= '0' && *pname <= '9') {
if (os_mul_and_add_overflow(fd, 10, *pname++ - '0', &fd)) {
break;
}
}
if (*pname != '\0') {
error = ENOENT;
goto bad;
}
if (fd < 0 || fd >= numfiles ||
*fdfile(p, fd) == NULL ||
(*fdflags(p, fd) & UF_RESERVED)) {
error = EBADF;
goto bad;
}
/*
* For OP_SETATTR lookups, resolve the backing vnode now so we do
* MACF checks on the right thing.
*
* If there is no vnode (i.e. something else is open at that fd) then
* just return an fdescnode.
*/
if ((cnp->cn_ndp->ni_op == OP_SETATTR) &&
(0 == vnode_getfromfd(ap->a_context, fd, &fvp))) {
cnp->cn_flags &= ~MAKEENTRY;
*vpp = fvp;
return 0;
}
error = fdesc_allocvp(Fdesc, FD_DESC + fd, dvp->v_mount, &fvp, VNON, fd);
if (error) {
goto bad;
}
*vpp = fvp;
return 0;
bad:
*vpp = NULL;
return error;
}
int
fdesc_open(struct vnop_open_args *ap)
{
struct vnode *vp = ap->a_vp;
thread_t thr = vfs_context_thread(ap->a_context);
uthread_t uu;
int error = 0;
if (thr == NULL) {
return EINVAL;
}
uu = get_bsdthread_info(thr);
switch (VTOFDESC(vp)->fd_type) {
case Fdesc:
/*
* XXX Kludge: set uu->uu_dupfd to contain the value of the
* the file descriptor being sought for duplication. The error
* return ensures that the vnode for this device will be
* released by vn_open. Open will detect this special error and
* take the actions in dupfdopen. Other callers of vn_open or
* vnop_open will simply report the error.
*/
uu->uu_dupfd = VTOFDESC(vp)->fd_fd; /* XXX */
error = ENODEV;
break;
default:
panic("Invalid type for fdesc node!");
break;
}
return error;
}
static int
fdesc_attr(int fd, struct vnode_attr *vap, vfs_context_t a_context)
{
struct fileproc *fp;
struct proc *p = vfs_context_proc(a_context);
struct stat stb;
int error;
if ((error = fp_lookup(p, fd, &fp, 0))) {
return error;
}
switch (FILEGLOB_DTYPE(fp->fp_glob)) {
case DTYPE_VNODE:
if ((error = vnode_getwithref((struct vnode *)fp_get_data(fp))) != 0) {
break;
}
if ((error = vnode_authorize((struct vnode *)fp_get_data(fp),
NULL,
KAUTH_VNODE_READ_ATTRIBUTES | KAUTH_VNODE_READ_SECURITY,
a_context)) == 0) {
error = vnode_getattr((struct vnode *)fp_get_data(fp), vap, a_context);
}
if (error == 0 && vap->va_type == VDIR) {
/*
* directories can cause loops in the namespace,
* so turn off the 'x' bits to avoid trouble.
*
* XXX ACLs break this, of course
*/
vap->va_mode &= ~((VEXEC) | (VEXEC >> 3) | (VEXEC >> 6));
}
(void)vnode_put((struct vnode *)fp_get_data(fp));
break;
case DTYPE_SOCKET:
case DTYPE_PIPE:
#if SOCKETS
if (FILEGLOB_DTYPE(fp->fp_glob) == DTYPE_SOCKET) {
error = soo_stat((struct socket *)fp_get_data(fp), (void *)&stb, 0);
} else
#endif /* SOCKETS */
error = pipe_stat((struct pipe *)fp_get_data(fp), (void *)&stb, 0);
if (error == 0) {
if (FILEGLOB_DTYPE(fp->fp_glob) == DTYPE_SOCKET) {
VATTR_RETURN(vap, va_type, VSOCK);
} else {
VATTR_RETURN(vap, va_type, VFIFO);
}
VATTR_RETURN(vap, va_mode, stb.st_mode);
VATTR_RETURN(vap, va_nlink, stb.st_nlink);
VATTR_RETURN(vap, va_uid, stb.st_uid);
VATTR_RETURN(vap, va_gid, stb.st_gid);
VATTR_RETURN(vap, va_fsid, stb.st_dev);
VATTR_RETURN(vap, va_fileid, stb.st_ino);
VATTR_RETURN(vap, va_data_size, stb.st_size);
VATTR_RETURN(vap, va_access_time, stb.st_atimespec);
VATTR_RETURN(vap, va_modify_time, stb.st_mtimespec);
VATTR_RETURN(vap, va_change_time, stb.st_ctimespec);
VATTR_RETURN(vap, va_gen, stb.st_gen);
VATTR_RETURN(vap, va_flags, stb.st_flags);
VATTR_RETURN(vap, va_rdev, stb.st_rdev);
VATTR_RETURN(vap, va_total_alloc, stb.st_blocks * stb.st_blksize);
VATTR_RETURN(vap, va_acl, NULL);
}
break;
default:
error = EBADF;
}
fp_drop(p, fd, fp, 0);
return error;
}
int
fdesc_getattr(struct vnop_getattr_args *ap)
{
struct vnode *vp = ap->a_vp;
struct vnode_attr *vap = ap->a_vap;
unsigned fd;
int error = 0;
switch (VTOFDESC(vp)->fd_type) {
case Fdesc:
fd = VTOFDESC(vp)->fd_fd;
error = fdesc_attr(fd, vap, ap->a_context);
break;
default:
panic("Invalid type for an fdesc node!");
break;
}
/*
* Yes, we do this without locking, but this value is always just
* a snapshot.
*/
if (error == 0) {
vp->v_type = (uint16_t)vap->va_type;
/* We need an inactive to reset type to VNON */
vnode_setneedinactive(vp);
}
return error;
}
int
fdesc_setattr(struct vnop_setattr_args *ap)
{
struct fileproc *fp;
unsigned fd;
int error;
struct proc * p = vfs_context_proc(ap->a_context);
/*
* Can't mess with the root vnode
*/
switch (VTOFDESC(ap->a_vp)->fd_type) {
case Fdesc:
break;
default:
panic("Invalid type for an fdesc node!");
return EACCES;
}
fd = VTOFDESC(ap->a_vp)->fd_fd;
if ((error = fp_lookup(vfs_context_proc(ap->a_context), fd, &fp, 0))) {
return error;
}
switch (FILEGLOB_DTYPE(fp->fp_glob)) {
case DTYPE_VNODE:
/*
* We shouldn't get here unless we were raced with close/open.
* In that case, shenanigans are happening and it's unsafe to
* take action on the `setattr`; the MACF and UNIX permission
* checks are no longer valid (TOCTOU).
*
* Fall through to report success.
*/
case DTYPE_SOCKET:
case DTYPE_PIPE:
error = 0;
break;
default:
error = EBADF;
break;
}
fp_drop(p, fd, fp, 0);
return error;
}
#define UIO_MX 16
/*
* static struct dirtmp {
* u_int32_t d_fileno;
* u_short d_reclen;
* u_short d_namlen;
* char d_name[8];
* } rootent[] = {
* { FD_DEVFD, UIO_MX, 2, "fd" },
* { FD_STDIN, UIO_MX, 5, "stdin" },
* { FD_STDOUT, UIO_MX, 6, "stdout" },
* { FD_STDERR, UIO_MX, 6, "stderr" },
* { 0, 0, 0, "" }
* };
*/
/* Only called on /dev/fd */
int
devfs_devfd_readdir(struct vnop_readdir_args *ap)
{
struct uio *uio = ap->a_uio;
struct proc *p = current_proc();
off_t i;
int error;
/*
* We don't allow exporting fdesc mounts, and currently local
* requests do not need cookies.
*/
if (ap->a_flags & (VNODE_READDIR_EXTENDED | VNODE_READDIR_REQSEEKOFF)) {
return EINVAL;
}
/*
* There needs to be space for at least one entry.
*/
if (uio_resid(uio) < UIO_MX) {
return EINVAL;
}
i = uio->uio_offset / UIO_MX;
error = 0;
while (uio_resid(uio) >= UIO_MX) {
if (i >= p->p_fd.fd_nfiles || i < 0) {
break;
}
if (*fdfile(p, i) != NULL && !(*fdflags(p, i) & UF_RESERVED)) {
struct dirent d;
struct dirent *dp = &d;
bzero((caddr_t) dp, UIO_MX);
dp->d_namlen = (__uint8_t)scnprintf(dp->d_name, sizeof(dp->d_name),
"%lld", i);
dp->d_reclen = UIO_MX;
dp->d_type = DT_UNKNOWN;
dp->d_fileno = (ino_t)i + FD_STDIN;
/*
* And ship to userland
*/
error = uiomove((caddr_t) dp, UIO_MX, uio);
if (error) {
break;
}
}
i++;
}
uio->uio_offset = i * UIO_MX;
return error;
}
int
fdesc_read(__unused struct vnop_read_args *ap)
{
return ENOTSUP;
}
int
fdesc_write(__unused struct vnop_write_args *ap)
{
return ENOTSUP;
}
int
fdesc_ioctl(__unused struct vnop_ioctl_args *ap)
{
return ENOTSUP;
}
int
fdesc_select(__unused struct vnop_select_args *ap)
{
return ENOTSUP;
}
int
fdesc_inactive(struct vnop_inactive_args *ap)
{
struct vnode *vp = ap->a_vp;
/*
* Clear out the v_type field to avoid
* nasty things happening in vgone().
*/
vp->v_type = VNON;
return 0;
}
int
fdesc_reclaim(struct vnop_reclaim_args *ap)
{
struct vnode *vp = ap->a_vp;
struct fdescnode *fd = VTOFDESC(vp);
fdesc_lock();
LIST_REMOVE(fd, fd_hash);
kfree_type(struct fdescnode, vp->v_data);
fdesc_unlock();
return 0;
}
/*
* Return POSIX pathconf information applicable to special devices.
*/
int
fdesc_pathconf(struct vnop_pathconf_args *ap)
{
switch (ap->a_name) {
case _PC_LINK_MAX:
*ap->a_retval = LINK_MAX;
return 0;
case _PC_MAX_CANON:
*ap->a_retval = MAX_CANON;
return 0;
case _PC_MAX_INPUT:
*ap->a_retval = MAX_INPUT;
return 0;
case _PC_PIPE_BUF:
*ap->a_retval = PIPE_BUF;
return 0;
case _PC_CHOWN_RESTRICTED:
*ap->a_retval = 200112; /* _POSIX_CHOWN_RESTRICTED */
return 0;
case _PC_VDISABLE:
*ap->a_retval = _POSIX_VDISABLE;
return 0;
default:
return EINVAL;
}
/* NOTREACHED */
}
/*
* /dev/fd "should never get here" operation
*/
int
fdesc_badop(void)
{
return ENOTSUP;
/* NOTREACHED */
}
#define VOPFUNC int (*)(void *)
#define fdesc_revoke nop_revoke
#define fdesc_strategy (void (*)(void))fdesc_badop
#define fdesc_nullop (void (*)(void ))nullop
#define fdesc_error (void (*)(void ))vn_default_error
#define fdesc_notsupp (void (*)(void ))eopnotsupp
int(**fdesc_vnodeop_p)(void *);
const struct vnodeopv_entry_desc devfs_fdesc_vnodeop_entries[] = {
{ .opve_op = &vnop_default_desc, .opve_impl = (VOPFUNC)fdesc_error },
{ .opve_op = &vnop_lookup_desc, .opve_impl = (VOPFUNC)fdesc_error}, /* lookup */
{ .opve_op = &vnop_create_desc, .opve_impl = (VOPFUNC)fdesc_notsupp }, /* create */
{ .opve_op = &vnop_mknod_desc, .opve_impl = (VOPFUNC)fdesc_notsupp }, /* mknod */
{ .opve_op = &vnop_open_desc, .opve_impl = (VOPFUNC)fdesc_open }, /* open */
{ .opve_op = &vnop_close_desc, .opve_impl = (VOPFUNC)fdesc_nullop }, /* close */
{ .opve_op = &vnop_access_desc, .opve_impl = (VOPFUNC)fdesc_nullop }, /* access */
{ .opve_op = &vnop_getattr_desc, .opve_impl = (VOPFUNC)fdesc_getattr }, /* getattr */
{ .opve_op = &vnop_setattr_desc, .opve_impl = (VOPFUNC)fdesc_setattr }, /* setattr */
{ .opve_op = &vnop_read_desc, .opve_impl = (VOPFUNC)fdesc_read }, /* read */
{ .opve_op = &vnop_write_desc, .opve_impl = (VOPFUNC)fdesc_write }, /* write */
{ .opve_op = &vnop_ioctl_desc, .opve_impl = (VOPFUNC)fdesc_ioctl }, /* ioctl */
{ .opve_op = &vnop_select_desc, .opve_impl = (VOPFUNC)fdesc_select }, /* select */
{ .opve_op = &vnop_revoke_desc, .opve_impl = (VOPFUNC)fdesc_revoke }, /* revoke */
{ .opve_op = &vnop_mmap_desc, .opve_impl = (VOPFUNC)fdesc_notsupp }, /* mmap */
{ .opve_op = &vnop_fsync_desc, .opve_impl = (VOPFUNC)fdesc_nullop }, /* fsync */
{ .opve_op = &vnop_remove_desc, .opve_impl = (VOPFUNC)fdesc_notsupp }, /* remove */
{ .opve_op = &vnop_link_desc, .opve_impl = (VOPFUNC)fdesc_notsupp }, /* link */
{ .opve_op = &vnop_rename_desc, .opve_impl = (VOPFUNC)fdesc_notsupp }, /* rename */
{ .opve_op = &vnop_mkdir_desc, .opve_impl = (VOPFUNC)fdesc_notsupp }, /* mkdir */
{ .opve_op = &vnop_rmdir_desc, .opve_impl = (VOPFUNC)fdesc_notsupp }, /* rmdir */
{ .opve_op = &vnop_symlink_desc, .opve_impl = (VOPFUNC)fdesc_notsupp }, /* symlink */
{ .opve_op = &vnop_readdir_desc, .opve_impl = (VOPFUNC)fdesc_error},/* readdir */
{ .opve_op = &vnop_readlink_desc, .opve_impl = (VOPFUNC)err_readlink}, /* readlink */
{ .opve_op = &vnop_inactive_desc, .opve_impl = (VOPFUNC)fdesc_inactive },/* inactive */
{ .opve_op = &vnop_reclaim_desc, .opve_impl = (VOPFUNC)fdesc_reclaim }, /* reclaim */
{ .opve_op = &vnop_strategy_desc, .opve_impl = (VOPFUNC)fdesc_strategy }, /* strategy */
{ .opve_op = &vnop_pathconf_desc, .opve_impl = (VOPFUNC)fdesc_pathconf }, /* pathconf */
{ .opve_op = &vnop_advlock_desc, .opve_impl = (VOPFUNC)fdesc_notsupp }, /* advlock */
{ .opve_op = &vnop_bwrite_desc, .opve_impl = (VOPFUNC)fdesc_notsupp }, /* bwrite */
{ .opve_op = &vnop_pagein_desc, .opve_impl = (VOPFUNC)err_pagein }, /* pagein */
{ .opve_op = &vnop_pageout_desc, .opve_impl = (VOPFUNC)err_pageout }, /* pageout */
{ .opve_op = &vnop_copyfile_desc, .opve_impl = (VOPFUNC)err_copyfile }, /* Copyfile */
{ .opve_op = &vnop_blktooff_desc, .opve_impl = (VOPFUNC)fdesc_notsupp }, /* blktooff */
{ .opve_op = &vnop_blktooff_desc, .opve_impl = (VOPFUNC)fdesc_notsupp }, /* offtoblk */
{ .opve_op = &vnop_blockmap_desc, .opve_impl = (VOPFUNC)fdesc_notsupp }, /* blockmap */
{ .opve_op = (struct vnodeop_desc*)NULL, .opve_impl = (VOPFUNC)NULL }
};
const struct vnodeopv_desc devfs_fdesc_vnodeop_opv_desc =
{ .opv_desc_vector_p = &fdesc_vnodeop_p, .opv_desc_ops = devfs_fdesc_vnodeop_entries };