NetBSD/sbin/mount_ext2fs/mount_ext2fs.c

155 lines
4.2 KiB
C

/* $NetBSD: mount_ext2fs.c,v 1.15 2006/03/21 21:11:41 christos 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
#if 0
static char sccsid[] = "@(#)mount_ufs.c 8.4 (Berkeley) 4/26/95";
#else
__RCSID("$NetBSD: mount_ext2fs.c,v 1.15 2006/03/21 21:11:41 christos Exp $");
#endif
#endif /* not lint */
#include <sys/param.h>
#include <sys/mount.h>
#include <ufs/ufs/ufsmount.h>
#include <err.h>
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <mntopts.h>
static void ext2fs_usage(void);
int mount_ext2fs(int argc, char **argv);
static const struct mntopt mopts[] = {
MOPT_STDOPTS,
MOPT_ASYNC,
MOPT_SYNC,
MOPT_UPDATE,
MOPT_RELOAD,
MOPT_FORCE,
MOPT_GETARGS,
MOPT_NODEVMTIME,
{ NULL }
};
#ifndef MOUNT_NOMAIN
int
main(int argc, char *argv[])
{
return mount_ext2fs(argc, argv);
}
#endif
int
mount_ext2fs(int argc, char *argv[])
{
struct ufs_args args; /* XXX ffs_args */
int ch, mntflags;
char fs_name[MAXPATHLEN], canon_dev[MAXPATHLEN];
const char *errcause;
mntoptparse_t mp;
mntflags = 0;
optind = optreset = 1; /* Reset for parse of new argv. */
while ((ch = getopt(argc, argv, "o:")) != -1)
switch (ch) {
case 'o':
mp = getmntopts(optarg, mopts, &mntflags, 0);
if (mp == NULL)
err(1, "getmntopts");
freemntopts(mp);
break;
case '?':
default:
ext2fs_usage();
}
argc -= optind;
argv += optind;
if (argc != 2)
ext2fs_usage();
if (realpath(argv[0], canon_dev) == NULL) /* Check device path */
err(1, "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(1, "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_EXT2FS, 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(1, "%s on %s: %s", args.fspec, fs_name, errcause);
}
exit(0);
}
static void
ext2fs_usage(void)
{
(void)fprintf(stderr,
"usage: mount_ext2fs [-o options] special node\n");
exit(1);
}