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Obtained from: copied fro mount_kernfs

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This is copied from the mount_kernfs code..
if it doesn't work there is a working binary in ~julian
This commit is contained in:
Julian Elischer 1995-04-21 01:17:50 +00:00
parent 9c6e0c69be
commit abeeb9ceb2
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=7967
3 changed files with 211 additions and 0 deletions
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11
sbin/mount_devfs/Makefile Normal file
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# @(#)Makefile 8.2 (Berkeley) 3/27/94
PROG= mount_devfs
SRCS= mount_devfs.c getmntopts.c
MAN8= mount_devfs.8
MOUNT= ${.CURDIR}/../mount
CFLAGS+= -I${MOUNT}
.PATH: ${MOUNT}
.include <bsd.prog.mk>

90
sbin/mount_devfs/mount_devfs.8 Normal file
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.\"
.\" Copyright (c) 1992, 1993, 1994
.\" The Regents of the University of California. All rights reserved.
.\" 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.
.\"
.\" @(#)mount_devfs.8 8.2 (Berkeley) 3/27/94
.\"
.\"
.Dd March 27, 1994
.Dt MOUNT_DEFVS 8
.Os FreeBSD 2.0
.Sh NAME
.Nm mount_devfs
.Nd mount the /devs file system
.Sh SYNOPSIS
.Nm mount_devfs
.Op Fl o Ar options
.Ar "devfs"
.Ar mount_point
.Sh DESCRIPTION
The
.Nm mount_devfs
command attaches an instance of the kernel's device
namespace to the global filesystem namespace.
The conventional mount point is
.Pa /devs .
This command is normally executed by
.Xr mount 8
at boot time.
.Pp
The filesystem includes several directories, links, symbolic links and devices,
some of which can also be written.
In a chroot'ed environment,
.Nm
can be used to create a new
.Pa /devs
mount point.
.Pp
The options are as follows:
.Bl -tag -width indent
.It Fl o
Options are specified with a
.Fl o
flag followed by a comma separated string of options.
See the
.Xr mount 8
man page for possible options and their meanings.
.El
.Sh SEE ALSO
.Xr mount 2 ,
.Xr unmount 2 ,
.Xr fstab 5 ,
.Xr mount 8
.Sh CAVEATS
This filesystem may not be NFS-exported.
.Sh HISTORY
The
.Nm mount_devfs
utility first appeared in FreeBSD 2.0

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/*
* Copyright (c) 1990, 1992 Jan-Simon Pendry
* Copyright (c) 1992, 1993, 1994
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed 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.
*/
#ifndef lint
char copyright[] =
"@(#) Copyright (c) 1992, 1993, 1994\n\
The Regents of the University of California. All rights reserved.\n";
#endif /* not lint */
#ifndef lint
static char sccsid[] = "@(#)mount_devfs.c 8.2 (Berkeley) 3/27/94";
#endif /* not lint */
#include <sys/param.h>
#include <sys/mount.h>
#include <err.h>
#include <unistd.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "mntopts.h"
struct mntopt mopts[] = {
MOPT_STDOPTS,
{ NULL }
};
void usage __P((void));
int
main(argc, argv)
int argc;
char *argv[];
{
int ch, mntflags;
struct vfsconf *vfc;
mntflags = 0;
while ((ch = getopt(argc, argv, "o:")) != EOF)
switch (ch) {
case 'o':
getmntopts(optarg, mopts, &mntflags, 0);
break;
case '?':
default:
usage();
}
argc -= optind;
argv += optind;
if (argc != 2)
usage();
vfc = getvfsbyname("devfs");
if(!vfc && vfsisloadable("devfs")) {
if(vfsload("devfs")) {
err(1, "vfsload(devfs)");
}
endvfsent();
vfc = getvfsbyname("devfs");
}
if (mount(vfc ? vfc->vfc_index : MOUNT_DEVFS, argv[1], mntflags, NULL))
err(1, NULL);
exit(0);
}
void
usage()
{
(void)fprintf(stderr,
"usage: mount_devfs [-o options] devfs mount_point\n");
exit(1);
}