NetBSD/sbin/mount_sysvbfs/mount_sysvbfs.c

148 lines
3.8 KiB
C

/* $NetBSD: mount_sysvbfs.c,v 1.7 2008/09/04 12:07:58 pooka 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\
The Regents of the University of California. All rights reserved.");
#endif /* not lint */
#ifndef lint
__RCSID("$NetBSD: mount_sysvbfs.c,v 1.7 2008/09/04 12:07:58 pooka 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 "mountprog.h"
#include "mount_sysvbfs.h"
static const struct mntopt mopts[] = {
MOPT_STDOPTS,
MOPT_UPDATE,
MOPT_GETARGS,
MOPT_NULL,
};
static void
sysvbfs_usage(void)
{
(void)fprintf(stderr, "usage: %s [-o options] special node\n",
getprogname());
exit(EXIT_FAILURE);
}
#ifndef MOUNT_NOMAIN
int
main(int argc, char **argv)
{
return mount_sysvbfs(argc, argv);
}
#endif
void
mount_sysvbfs_parseargs(int argc, char **argv,
struct sysvbfs_args *args, int *mntflags,
char *canon_dev, char *canon_dir)
{
int ch;
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:
sysvbfs_usage();
}
argc -= optind;
argv += optind;
if (argc != 2)
sysvbfs_usage();
pathadj(argv[0], canon_dev);
args->fspec = canon_dev;
pathadj(argv[1], canon_dir);
}
int
mount_sysvbfs(int argc, char *argv[])
{
struct sysvbfs_args args;
char canon_dev[MAXPATHLEN], canon_dir[MAXPATHLEN];
const char *errcause;
int mntflags;
mount_sysvbfs_parseargs(argc, argv, &args, &mntflags,
canon_dev, canon_dir);
if (mount(MOUNT_SYSVBFS, canon_dir, mntflags, &args, sizeof args)==-1) {
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",
canon_dev, canon_dir, errcause);
}
exit(EXIT_SUCCESS);
}