NetBSD/sbin/mount_sysvbfs/mount_sysvbfs.c

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/* $NetBSD: mount_sysvbfs.c,v 1.1 2005/12/29 14:53:45 tsutsui Exp $ */
/*-
* Copyright (c) 1993, 1994
* The Regents of the University of California. All rights reserved.
*
* 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. 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.
*/
#include <sys/cdefs.h>
#ifndef lint
__COPYRIGHT("@(#) Copyright (c) 1993, 1994\n\
The Regents of the University of California. All rights reserved.\n");
#endif /* not lint */
#ifndef lint
__RCSID("$NetBSD: mount_sysvbfs.c,v 1.1 2005/12/29 14:53:45 tsutsui Exp $");
#endif /* not lint */
#include <sys/param.h>
#include <sys/mount.h>
#include <err.h>
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <mntopts.h>
#include <fs/sysvbfs/sysvbfs.h>
static void sysvbfs_usage(void);
int mount_sysvbfs(int argc, char **argv);
static const struct mntopt mopts[] = {
MOPT_STDOPTS,
MOPT_UPDATE,
MOPT_GETARGS,
{ NULL }
};
#ifndef MOUNT_NOMAIN
int
main(int argc, char **argv)
{
return mount_sysvbfs(argc, argv);
}
#endif
int
mount_sysvbfs(int argc, char *argv[])
{
struct sysvbfs_args args;
int ch, mntflags;
char fs_name[MAXPATHLEN], canon_dev[MAXPATHLEN];
const char *errcause;
mntflags = 0;
optind = optreset = 1; /* Reset for parse of new argv. */
while ((ch = getopt(argc, argv, "o:")) != -1)
switch (ch) {
case 'o':
getmntopts(optarg, mopts, &mntflags, 0);
break;
case '?':
default:
sysvbfs_usage();
}
argc -= optind;
argv += optind;
if (argc != 2)
sysvbfs_usage();
if (realpath(argv[0], canon_dev) == NULL) /* Check device path */
err(EXIT_FAILURE, "realpath %s", argv[0]);
if (strncmp(argv[0], canon_dev, MAXPATHLEN)) {
warnx("\"%s\" is a relative path.", argv[0]);
warnx("using \"%s\" instead.", canon_dev);
}
args.fspec = canon_dev;
if (realpath(argv[1], fs_name) == NULL) /* Check mounton path */
err(EXIT_FAILURE, "realpath %s", argv[1]);
if (strncmp(argv[1], fs_name, MAXPATHLEN)) {
warnx("\"%s\" is a relative path.", argv[1]);
warnx("using \"%s\" instead.", fs_name);
}
if (mount(MOUNT_SYSVBFS, fs_name, mntflags, &args) < 0) {
switch (errno) {
case EMFILE:
errcause = "mount table full";
break;
case EINVAL:
if (mntflags & MNT_UPDATE)
errcause =
"specified device does not match mounted device";
else
errcause = "incorrect super block";
break;
default:
errcause = strerror(errno);
break;
}
errx(EXIT_FAILURE, "%s on %s: %s",
args.fspec, fs_name, errcause);
}
exit(EXIT_SUCCESS);
}
static void
sysvbfs_usage(void)
{
(void)fprintf(stderr, "usage: %s [-o options] special node\n",
getprogname());
exit(EXIT_FAILURE);
}