NetBSD/sbin/mount_chfs/mount_chfs.c

150 lines
3.7 KiB
C

/* $NetBSD: mount_chfs.c,v 1.5 2021/07/16 12:09:36 andvar Exp $ */
/*-
* Copyright (c) 2010 Department of Software Engineering,
* University of Szeged, Hungary
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by the Department of Software Engineering, University of Szeged, Hungary
*
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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
#endif /* not lint */
#include <sys/param.h>
#include <sys/mount.h>
#include <sys/stat.h>
#include <ufs/ufs/ufsmount.h>
#include <ctype.h>
#include <err.h>
#include <errno.h>
#include <grp.h>
#include <mntopts.h>
#include <pwd.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "mountprog.h"
#include "mount_chfs.h"
static const struct mntopt mopts[] = {
MOPT_STDOPTS,
MOPT_GETARGS,
MOPT_NULL,
};
/* --------------------------------------------------------------------- */
static void usage(void) __dead;
/* --------------------------------------------------------------------- */
void
mount_chfs_parseargs(int argc, char *argv[], struct ufs_args *args,
int *mntflags, char *canon_dev, char *canon_dir)
{
int ch;
mntoptparse_t mp;
struct stat sb;
/* Set default values for mount point arguments. */
memset(args, 0, sizeof(*args));
*mntflags = 0;
optind = optreset = 1;
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:
usage();
}
}
argc -= optind;
argv += optind;
if (argc != 2)
usage();
pathadj(argv[0], canon_dev);
pathadj(argv[1], canon_dir);
args->fspec = canon_dev;
if (stat(canon_dir, &sb) == -1) {
err(EXIT_FAILURE, "cannot stat `%s'", canon_dir);
}
}
/* --------------------------------------------------------------------- */
static void
usage(void)
{
(void)fprintf(stderr,
"usage: %s special mountpath\n",
getprogname());
exit(1);
}
/* --------------------------------------------------------------------- */
int
mount_chfs(int argc, char *argv[])
{
struct ufs_args args;
char canon_dev[MAXPATHLEN], fs_name[MAXPATHLEN];
int mntflags;
mount_chfs_parseargs(argc, argv, &args, &mntflags,
canon_dev, fs_name);
if (mount(MOUNT_CHFS, fs_name, mntflags, &args, sizeof args) == -1) {
err(EXIT_FAILURE, "chfs on %s", fs_name);
}
return EXIT_SUCCESS;
}
#ifndef MOUNT_NOMAIN
int
main(int argc, char *argv[])
{
setprogname(argv[0]);
return mount_chfs(argc, argv);
}
#endif