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freebsd-dev/sys/fs/fdescfs/fdesc_vnops.c

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/*
* 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 8.9 (Berkeley) 1/21/94
*
* $Id: fdesc_vnops.c,v 1.3 1994/09/09 13:23:20 davidg Exp $
*/
/*
* /dev/fd Filesystem
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/types.h>
#include <sys/time.h>
#include <sys/proc.h>
#include <sys/kernel.h> /* boottime */
#include <sys/resourcevar.h>
#include <sys/filedesc.h>
#include <sys/vnode.h>
#include <sys/malloc.h>
#include <sys/file.h>
#include <sys/stat.h>
#include <sys/mount.h>
#include <sys/namei.h>
#include <sys/buf.h>
#include <sys/dirent.h>
#include <miscfs/fdesc/fdesc.h>
#define cttyvp(p) ((p)->p_flag & P_CONTROLT ? (p)->p_session->s_ttyvp : NULL)
#define FDL_WANT 0x01
#define FDL_LOCKED 0x02
static int fdcache_lock;
dev_t devctty;
#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 4
#define FD_NHASH(ix) ((ix) & NFDCACHE-1)
/*
* Cache head
*/
struct fdcache {
struct fdescnode *fc_forw;
struct fdescnode *fc_back;
};
static struct fdcache fdcache[NFDCACHE];
/*
* Initialise cache headers
*/
int
fdesc_init()
{
struct fdcache *fc;
devctty = makedev(nchrdev, 0);
for (fc = fdcache; fc < fdcache + NFDCACHE; fc++)
fc->fc_forw = fc->fc_back = (struct fdescnode *) fc;
return (0);
}
/*
* Compute hash list for given target vnode
*/
static struct fdcache *
fdesc_hash(ix)
int ix;
{
return (&fdcache[FD_NHASH(ix)]);
}
int
fdesc_allocvp(ftype, ix, mp, vpp)
fdntype ftype;
int ix;
struct mount *mp;
struct vnode **vpp;
{
struct fdcache *fc;
struct fdescnode *fd;
int error = 0;
loop:
fc = fdesc_hash(ix);
for (fd = fc->fc_forw; fd != (struct fdescnode *) fc; fd = fd->fd_forw) {
if (fd->fd_ix == ix && fd->fd_vnode->v_mount == mp) {
if (vget(fd->fd_vnode, 0))
goto loop;
*vpp = fd->fd_vnode;
return (error);
}
}
/*
* otherwise lock the array while we call getnewvnode
* since that can block.
*/
if (fdcache_lock & FDL_LOCKED) {
fdcache_lock |= FDL_WANT;
sleep((caddr_t) &fdcache_lock, PINOD);
goto loop;
}
fdcache_lock |= FDL_LOCKED;
error = getnewvnode(VT_FDESC, mp, fdesc_vnodeop_p, vpp);
if (error)
goto out;
MALLOC(fd, void *, sizeof(struct fdescnode), M_TEMP, M_WAITOK);
(*vpp)->v_data = fd;
fd->fd_vnode = *vpp;
fd->fd_type = ftype;
fd->fd_fd = -1;
fd->fd_link = 0;
fd->fd_ix = ix;
fc = fdesc_hash(ix);
insque(fd, fc);
out:;
fdcache_lock &= ~FDL_LOCKED;
if (fdcache_lock & FDL_WANT) {
fdcache_lock &= ~FDL_WANT;
wakeup((caddr_t) &fdcache_lock);
}
return (error);
}
/*
* vp is the current namei directory
* ndp is the name to locate in that directory...
*/
int
fdesc_lookup(ap)
struct vop_lookup_args /* {
struct vnode * a_dvp;
struct vnode ** a_vpp;
struct componentname * a_cnp;
} */ *ap;
{
struct vnode **vpp = ap->a_vpp;
struct vnode *dvp = ap->a_dvp;
char *pname;
struct proc *p;
int nfiles;
unsigned fd = 0;
int error;
struct vnode *fvp;
char *ln;
pname = ap->a_cnp->cn_nameptr;
if (ap->a_cnp->cn_namelen == 1 && *pname == '.') {
*vpp = dvp;
VREF(dvp);
VOP_LOCK(dvp);
return (0);
}
p = ap->a_cnp->cn_proc;
nfiles = p->p_fd->fd_nfiles;
switch (VTOFDESC(dvp)->fd_type) {
default:
case Flink:
case Fdesc:
case Fctty:
error = ENOTDIR;
goto bad;
case Froot:
if (ap->a_cnp->cn_namelen == 2 && bcmp(pname, "fd", 2) == 0) {
error = fdesc_allocvp(Fdevfd, FD_DEVFD, dvp->v_mount, &fvp);
if (error)
goto bad;
*vpp = fvp;
fvp->v_type = VDIR;
VOP_LOCK(fvp);
return (0);
}
if (ap->a_cnp->cn_namelen == 3 && bcmp(pname, "tty", 3) == 0) {
struct vnode *ttyvp = cttyvp(p);
if (ttyvp == NULL) {
error = ENXIO;
goto bad;
}
error = fdesc_allocvp(Fctty, FD_CTTY, dvp->v_mount, &fvp);
if (error)
goto bad;
*vpp = fvp;
fvp->v_type = VFIFO;
VOP_LOCK(fvp);
return (0);
}
ln = 0;
switch (ap->a_cnp->cn_namelen) {
case 5:
if (bcmp(pname, "stdin", 5) == 0) {
ln = "fd/0";
fd = FD_STDIN;
}
break;
case 6:
if (bcmp(pname, "stdout", 6) == 0) {
ln = "fd/1";
fd = FD_STDOUT;
} else
if (bcmp(pname, "stderr", 6) == 0) {
ln = "fd/2";
fd = FD_STDERR;
}
break;
}
if (ln) {
error = fdesc_allocvp(Flink, fd, dvp->v_mount, &fvp);
if (error)
goto bad;
VTOFDESC(fvp)->fd_link = ln;
*vpp = fvp;
fvp->v_type = VLNK;
VOP_LOCK(fvp);
return (0);
} else {
error = ENOENT;
goto bad;
}
/* FALL THROUGH */
case Fdevfd:
if (ap->a_cnp->cn_namelen == 2 && bcmp(pname, "..", 2) == 0) {
error = fdesc_root(dvp->v_mount, vpp);
return (error);
}
fd = 0;
while (*pname >= '0' && *pname <= '9') {
fd = 10 * fd + *pname++ - '0';
if (fd >= nfiles)
break;
}
if (*pname != '\0') {
error = ENOENT;
goto bad;
}
if (fd >= nfiles || p->p_fd->fd_ofiles[fd] == NULL) {
error = EBADF;
goto bad;
}
error = fdesc_allocvp(Fdesc, FD_DESC+fd, dvp->v_mount, &fvp);
if (error)
goto bad;
VTOFDESC(fvp)->fd_fd = fd;
*vpp = fvp;
return (0);
}
bad:;
*vpp = NULL;
return (error);
}
int
fdesc_open(ap)
struct vop_open_args /* {
struct vnode *a_vp;
int a_mode;
struct ucred *a_cred;
struct proc *a_p;
} */ *ap;
{
struct vnode *vp = ap->a_vp;
int error = 0;
switch (VTOFDESC(vp)->fd_type) {
case Fdesc:
/*
* XXX Kludge: set p->p_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
* VOP_OPEN will simply report the error.
*/
ap->a_p->p_dupfd = VTOFDESC(vp)->fd_fd; /* XXX */
error = ENODEV;
break;
case Fctty:
error = cttyopen(devctty, ap->a_mode, 0, ap->a_p);
break;
}
return (error);
}
static int
fdesc_attr(fd, vap, cred, p)
int fd;
struct vattr *vap;
struct ucred *cred;
struct proc *p;
{
struct filedesc *fdp = p->p_fd;
struct file *fp;
struct stat stb;
int error;
if (fd >= fdp->fd_nfiles || (fp = fdp->fd_ofiles[fd]) == NULL)
return (EBADF);
switch (fp->f_type) {
case DTYPE_VNODE:
error = VOP_GETATTR((struct vnode *) fp->f_data, vap, cred, p);
if (error == 0 && vap->va_type == VDIR) {
/*
* don't allow directories to show up because
* that causes loops in the namespace.
*/
vap->va_type = VFIFO;
}
break;
case DTYPE_SOCKET:
error = soo_stat((struct socket *)fp->f_data, &stb);
if (error == 0) {
vattr_null(vap);
vap->va_type = VSOCK;
vap->va_mode = stb.st_mode;
vap->va_nlink = stb.st_nlink;
vap->va_uid = stb.st_uid;
vap->va_gid = stb.st_gid;
vap->va_fsid = stb.st_dev;
vap->va_fileid = stb.st_ino;
vap->va_size = stb.st_size;
vap->va_blocksize = stb.st_blksize;
vap->va_atime = stb.st_atimespec;
vap->va_mtime = stb.st_mtimespec;
vap->va_ctime = stb.st_ctimespec;
vap->va_gen = stb.st_gen;
vap->va_flags = stb.st_flags;
vap->va_rdev = stb.st_rdev;
vap->va_bytes = stb.st_blocks * stb.st_blksize;
}
break;
default:
panic("fdesc attr");
break;
}
return (error);
}
int
fdesc_getattr(ap)
struct vop_getattr_args /* {
struct vnode *a_vp;
struct vattr *a_vap;
struct ucred *a_cred;
struct proc *a_p;
} */ *ap;
{
struct vnode *vp = ap->a_vp;
struct vattr *vap = ap->a_vap;
unsigned fd;
int error = 0;
switch (VTOFDESC(vp)->fd_type) {
case Froot:
case Fdevfd:
case Flink:
case Fctty:
bzero((caddr_t) vap, sizeof(*vap));
vattr_null(vap);
vap->va_fileid = VTOFDESC(vp)->fd_ix;
switch (VTOFDESC(vp)->fd_type) {
case Flink:
vap->va_mode = S_IRUSR|S_IXUSR|S_IRGRP|S_IXGRP|S_IROTH|S_IXOTH;
vap->va_type = VLNK;
vap->va_nlink = 1;
vap->va_size = strlen(VTOFDESC(vp)->fd_link);
break;
case Fctty:
vap->va_mode = S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH|S_IWOTH;
vap->va_type = VFIFO;
vap->va_nlink = 1;
vap->va_size = 0;
break;
default:
vap->va_mode = S_IRUSR|S_IXUSR|S_IRGRP|S_IXGRP|S_IROTH|S_IXOTH;
vap->va_type = VDIR;
vap->va_nlink = 2;
vap->va_size = DEV_BSIZE;
break;
}
vap->va_uid = 0;
vap->va_gid = 0;
vap->va_fsid = vp->v_mount->mnt_stat.f_fsid.val[0];
vap->va_blocksize = DEV_BSIZE;
vap->va_atime.ts_sec = boottime.tv_sec;
vap->va_atime.ts_nsec = 0;
vap->va_mtime = vap->va_atime;
vap->va_ctime = vap->va_mtime;
vap->va_gen = 0;
vap->va_flags = 0;
vap->va_rdev = 0;
vap->va_bytes = 0;
break;
case Fdesc:
fd = VTOFDESC(vp)->fd_fd;
error = fdesc_attr(fd, vap, ap->a_cred, ap->a_p);
break;
default:
panic("fdesc_getattr");
break;
}
if (error == 0)
vp->v_type = vap->va_type;
return (error);
}
int
fdesc_setattr(ap)
struct vop_setattr_args /* {
struct vnode *a_vp;
struct vattr *a_vap;
struct ucred *a_cred;
struct proc *a_p;
} */ *ap;
{
struct filedesc *fdp = ap->a_p->p_fd;
struct file *fp;
unsigned fd;
int error;
/*
* Can't mess with the root vnode
*/
switch (VTOFDESC(ap->a_vp)->fd_type) {
case Fdesc:
break;
case Fctty:
return (0);
default:
return (EACCES);
}
fd = VTOFDESC(ap->a_vp)->fd_fd;
if (fd >= fdp->fd_nfiles || (fp = fdp->fd_ofiles[fd]) == NULL) {
return (EBADF);
}
/*
* Can setattr the underlying vnode, but not sockets!
*/
switch (fp->f_type) {
case DTYPE_VNODE:
error = VOP_SETATTR((struct vnode *) fp->f_data, ap->a_vap, ap->a_cred, ap->a_p);
break;
case DTYPE_SOCKET:
error = 0;
break;
default:
error = EBADF;
break;
}
return (error);
}
#define UIO_MX 16
static struct dirtmp {
u_long 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" },
{ FD_CTTY, UIO_MX, 3, "tty" },
{ 0 }
};
int
fdesc_readdir(ap)
struct vop_readdir_args /* {
struct vnode *a_vp;
struct uio *a_uio;
struct ucred *a_cred;
} */ *ap;
{
struct uio *uio = ap->a_uio;
struct filedesc *fdp;
int i;
int error;
switch (VTOFDESC(ap->a_vp)->fd_type) {
case Fctty:
return (0);
case Fdesc:
return (ENOTDIR);
default:
break;
}
fdp = uio->uio_procp->p_fd;
if (VTOFDESC(ap->a_vp)->fd_type == Froot) {
struct dirent d;
struct dirent *dp = &d;
struct dirtmp *dt;
i = uio->uio_offset / UIO_MX;
error = 0;
while (uio->uio_resid > 0) {
dt = &rootent[i];
if (dt->d_fileno == 0) {
/**eofflagp = 1;*/
break;
}
i++;
switch (dt->d_fileno) {
case FD_CTTY:
if (cttyvp(uio->uio_procp) == NULL)
continue;
break;
case FD_STDIN:
case FD_STDOUT:
case FD_STDERR:
if ((dt->d_fileno-FD_STDIN) >= fdp->fd_nfiles)
continue;
if (fdp->fd_ofiles[dt->d_fileno-FD_STDIN] == NULL)
continue;
break;
}
bzero((caddr_t) dp, UIO_MX);
dp->d_fileno = dt->d_fileno;
dp->d_namlen = dt->d_namlen;
dp->d_type = DT_UNKNOWN;
dp->d_reclen = dt->d_reclen;
bcopy(dt->d_name, dp->d_name, dp->d_namlen+1);
error = uiomove((caddr_t) dp, UIO_MX, uio);
if (error)
break;
}
uio->uio_offset = i * UIO_MX;
return (error);
}
i = uio->uio_offset / UIO_MX;
error = 0;
while (uio->uio_resid > 0) {
if (i >= fdp->fd_nfiles)
break;
if (fdp->fd_ofiles[i] != NULL) {
struct dirent d;
struct dirent *dp = &d;
bzero((caddr_t) dp, UIO_MX);
dp->d_namlen = sprintf(dp->d_name, "%d", i);
dp->d_reclen = UIO_MX;
dp->d_type = DT_UNKNOWN;
dp->d_fileno = 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_readlink(ap)
struct vop_readlink_args /* {
struct vnode *a_vp;
struct uio *a_uio;
struct ucred *a_cred;
} */ *ap;
{
struct vnode *vp = ap->a_vp;
int error;
if (vp->v_type != VLNK)
return (EPERM);
if (VTOFDESC(vp)->fd_type == Flink) {
char *ln = VTOFDESC(vp)->fd_link;
error = uiomove(ln, strlen(ln), ap->a_uio);
} else {
error = EOPNOTSUPP;
}
return (error);
}
int
fdesc_read(ap)
struct vop_read_args /* {
struct vnode *a_vp;
struct uio *a_uio;
int a_ioflag;
struct ucred *a_cred;
} */ *ap;
{
int error = EOPNOTSUPP;
switch (VTOFDESC(ap->a_vp)->fd_type) {
case Fctty:
error = cttyread(devctty, ap->a_uio, ap->a_ioflag);
break;
default:
error = EOPNOTSUPP;
break;
}
return (error);
}
int
fdesc_write(ap)
struct vop_write_args /* {
struct vnode *a_vp;
struct uio *a_uio;
int a_ioflag;
struct ucred *a_cred;
} */ *ap;
{
int error = EOPNOTSUPP;
switch (VTOFDESC(ap->a_vp)->fd_type) {
case Fctty:
error = cttywrite(devctty, ap->a_uio, ap->a_ioflag);
break;
default:
error = EOPNOTSUPP;
break;
}
return (error);
}
int
fdesc_ioctl(ap)
struct vop_ioctl_args /* {
struct vnode *a_vp;
int a_command;
caddr_t a_data;
int a_fflag;
struct ucred *a_cred;
struct proc *a_p;
} */ *ap;
{
int error = EOPNOTSUPP;
switch (VTOFDESC(ap->a_vp)->fd_type) {
case Fctty:
error = cttyioctl(devctty, ap->a_command, ap->a_data,
ap->a_fflag, ap->a_p);
break;
default:
error = EOPNOTSUPP;
break;
}
return (error);
}
int
fdesc_select(ap)
struct vop_select_args /* {
struct vnode *a_vp;
int a_which;
int a_fflags;
struct ucred *a_cred;
struct proc *a_p;
} */ *ap;
{
int error = EOPNOTSUPP;
switch (VTOFDESC(ap->a_vp)->fd_type) {
case Fctty:
error = cttyselect(devctty, ap->a_fflags, ap->a_p);
break;
default:
error = EOPNOTSUPP;
break;
}
return (error);
}
int
fdesc_inactive(ap)
struct vop_inactive_args /* {
struct vnode *a_vp;
} */ *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(ap)
struct vop_reclaim_args /* {
struct vnode *a_vp;
} */ *ap;
{
struct vnode *vp = ap->a_vp;
remque(VTOFDESC(vp));
FREE(vp->v_data, M_TEMP);
vp->v_data = 0;
return (0);
}
/*
* Return POSIX pathconf information applicable to special devices.
*/
int
fdesc_pathconf(ap)
struct vop_pathconf_args /* {
struct vnode *a_vp;
int a_name;
int *a_retval;
} */ *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 = 1;
return (0);
case _PC_VDISABLE:
*ap->a_retval = _POSIX_VDISABLE;
return (0);
default:
return (EINVAL);
}
/* NOTREACHED */
}
/*
* Print out the contents of a /dev/fd vnode.
*/
/* ARGSUSED */
int
fdesc_print(ap)
struct vop_print_args /* {
struct vnode *a_vp;
} */ *ap;
{
printf("tag VT_NON, fdesc vnode\n");
return (0);
}
/*void*/
int
fdesc_vfree(ap)
struct vop_vfree_args /* {
struct vnode *a_pvp;
ino_t a_ino;
int a_mode;
} */ *ap;
{
return (0);
}
/*
* /dev/fd vnode unsupported operation
*/
int
fdesc_enotsupp()
{
return (EOPNOTSUPP);
}
/*
* /dev/fd "should never get here" operation
*/
int
fdesc_badop()
{
panic("fdesc: bad op");
/* NOTREACHED */
}
/*
* /dev/fd vnode null operation
*/
int
fdesc_nullop()
{
return (0);
}
#define fdesc_create ((int (*) __P((struct vop_create_args *)))fdesc_enotsupp)
#define fdesc_mknod ((int (*) __P((struct vop_mknod_args *)))fdesc_enotsupp)
#define fdesc_close ((int (*) __P((struct vop_close_args *)))nullop)
#define fdesc_access ((int (*) __P((struct vop_access_args *)))nullop)
#define fdesc_mmap ((int (*) __P((struct vop_mmap_args *)))fdesc_enotsupp)
#define fdesc_fsync ((int (*) __P((struct vop_fsync_args *)))nullop)
#define fdesc_seek ((int (*) __P((struct vop_seek_args *)))nullop)
#define fdesc_remove ((int (*) __P((struct vop_remove_args *)))fdesc_enotsupp)
#define fdesc_link ((int (*) __P((struct vop_link_args *)))fdesc_enotsupp)
#define fdesc_rename ((int (*) __P((struct vop_rename_args *)))fdesc_enotsupp)
#define fdesc_mkdir ((int (*) __P((struct vop_mkdir_args *)))fdesc_enotsupp)
#define fdesc_rmdir ((int (*) __P((struct vop_rmdir_args *)))fdesc_enotsupp)
#define fdesc_symlink ((int (*) __P((struct vop_symlink_args *)))fdesc_enotsupp)
#define fdesc_abortop ((int (*) __P((struct vop_abortop_args *)))nullop)
#define fdesc_lock ((int (*) __P((struct vop_lock_args *)))nullop)
#define fdesc_unlock ((int (*) __P((struct vop_unlock_args *)))nullop)
#define fdesc_bmap ((int (*) __P((struct vop_bmap_args *)))fdesc_badop)
#define fdesc_strategy ((int (*) __P((struct vop_strategy_args *)))fdesc_badop)
#define fdesc_islocked ((int (*) __P((struct vop_islocked_args *)))nullop)
#define fdesc_advlock ((int (*) __P((struct vop_advlock_args *)))fdesc_enotsupp)
#define fdesc_blkatoff \
((int (*) __P((struct vop_blkatoff_args *)))fdesc_enotsupp)
#define fdesc_vget ((int (*) __P((struct vop_vget_args *)))fdesc_enotsupp)
#define fdesc_valloc ((int(*) __P(( \
struct vnode *pvp, \
int mode, \
struct ucred *cred, \
struct vnode **vpp))) fdesc_enotsupp)
#define fdesc_truncate \
((int (*) __P((struct vop_truncate_args *)))fdesc_enotsupp)
#define fdesc_update ((int (*) __P((struct vop_update_args *)))fdesc_enotsupp)
#define fdesc_bwrite ((int (*) __P((struct vop_bwrite_args *)))fdesc_enotsupp)
int (**fdesc_vnodeop_p)();
struct vnodeopv_entry_desc fdesc_vnodeop_entries[] = {
{ &vop_default_desc, vn_default_error },
{ &vop_lookup_desc, fdesc_lookup }, /* lookup */
{ &vop_create_desc, fdesc_create }, /* create */
{ &vop_mknod_desc, fdesc_mknod }, /* mknod */
{ &vop_open_desc, fdesc_open }, /* open */
{ &vop_close_desc, fdesc_close }, /* close */
{ &vop_access_desc, fdesc_access }, /* access */
{ &vop_getattr_desc, fdesc_getattr }, /* getattr */
{ &vop_setattr_desc, fdesc_setattr }, /* setattr */
{ &vop_read_desc, fdesc_read }, /* read */
{ &vop_write_desc, fdesc_write }, /* write */
{ &vop_ioctl_desc, fdesc_ioctl }, /* ioctl */
{ &vop_select_desc, fdesc_select }, /* select */
{ &vop_mmap_desc, fdesc_mmap }, /* mmap */
{ &vop_fsync_desc, fdesc_fsync }, /* fsync */
{ &vop_seek_desc, fdesc_seek }, /* seek */
{ &vop_remove_desc, fdesc_remove }, /* remove */
{ &vop_link_desc, fdesc_link }, /* link */
{ &vop_rename_desc, fdesc_rename }, /* rename */
{ &vop_mkdir_desc, fdesc_mkdir }, /* mkdir */
{ &vop_rmdir_desc, fdesc_rmdir }, /* rmdir */
{ &vop_symlink_desc, fdesc_symlink }, /* symlink */
{ &vop_readdir_desc, fdesc_readdir }, /* readdir */
{ &vop_readlink_desc, fdesc_readlink }, /* readlink */
{ &vop_abortop_desc, fdesc_abortop }, /* abortop */
{ &vop_inactive_desc, fdesc_inactive }, /* inactive */
{ &vop_reclaim_desc, fdesc_reclaim }, /* reclaim */
{ &vop_lock_desc, fdesc_lock }, /* lock */
{ &vop_unlock_desc, fdesc_unlock }, /* unlock */
{ &vop_bmap_desc, fdesc_bmap }, /* bmap */
{ &vop_strategy_desc, fdesc_strategy }, /* strategy */
{ &vop_print_desc, fdesc_print }, /* print */
{ &vop_islocked_desc, fdesc_islocked }, /* islocked */
{ &vop_pathconf_desc, fdesc_pathconf }, /* pathconf */
{ &vop_advlock_desc, fdesc_advlock }, /* advlock */
{ &vop_blkatoff_desc, fdesc_blkatoff }, /* blkatoff */
{ &vop_valloc_desc, fdesc_valloc }, /* valloc */
{ &vop_vfree_desc, fdesc_vfree }, /* vfree */
{ &vop_truncate_desc, fdesc_truncate }, /* truncate */
{ &vop_update_desc, fdesc_update }, /* update */
{ &vop_bwrite_desc, fdesc_bwrite }, /* bwrite */
{ (struct vnodeop_desc*)NULL, (int(*)())NULL }
};
struct vnodeopv_desc fdesc_vnodeop_opv_desc =
{ &fdesc_vnodeop_p, fdesc_vnodeop_entries };
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