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mount_ext2fs.c revision 1.9 
      1 /*	$NetBSD: mount_ext2fs.c,v 1.9 2002/09/21 18:43:33 christos Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 1993, 1994
      5  *	The Regents of the University of California.  All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  * 3. All advertising materials mentioning features or use of this software
     16  *    must display the following acknowledgement:
     17  *	This product includes software developed by the University of
     18  *	California, Berkeley and its contributors.
     19  * 4. Neither the name of the University nor the names of its contributors
     20  *    may be used to endorse or promote products derived from this software
     21  *    without specific prior written permission.
     22  *
     23  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     26  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     27  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     33  * SUCH DAMAGE.
     34  */
     35 
     36 #include <sys/cdefs.h>
     37 #ifndef lint
     38 __COPYRIGHT("@(#) Copyright (c) 1993, 1994\n\
     39 	The Regents of the University of California.  All rights reserved.\n");
     40 #endif /* not lint */
     41 
     42 #ifndef lint
     43 #if 0
     44 static char sccsid[] = "@(#)mount_ufs.c	8.4 (Berkeley) 4/26/95";
     45 #else
     46 __RCSID("$NetBSD: mount_ext2fs.c,v 1.9 2002/09/21 18:43:33 christos Exp $");
     47 #endif
     48 #endif /* not lint */
     49 
     50 #include <sys/param.h>
     51 #include <sys/mount.h>
     52 #include <ufs/ufs/ufsmount.h>
     53 
     54 #include <err.h>
     55 #include <errno.h>
     56 #include <stdio.h>
     57 #include <stdlib.h>
     58 
     59 #include <string.h>
     60 #include <unistd.h>
     61 
     62 #include "mntopts.h"
     63 
     64 static void	ext2fs_usage __P((void));
     65 int	main __P((int, char *[]));
     66 int	mount_ext2fs __P((int argc, char **argv));
     67 
     68 static const struct mntopt mopts[] = {
     69 	MOPT_STDOPTS,
     70 	MOPT_ASYNC,
     71 	MOPT_SYNC,
     72 	MOPT_UPDATE,
     73 	MOPT_RELOAD,
     74 	MOPT_FORCE,
     75 	MOPT_GETARGS,
     76 	MOPT_NODEVMTIME,
     77 	{ NULL }
     78 };
     79 
     80 #ifndef MOUNT_NOMAIN
     81 int
     82 main(argc, argv)
     83 	int argc;
     84 	char *argv[];
     85 {
     86 	return mount_ext2fs(argc, argv);
     87 }
     88 #endif
     89 
     90 int
     91 mount_ext2fs(argc, argv)
     92 	int argc;
     93 	char *argv[];
     94 {
     95 	struct ufs_args args;		/* XXX ffs_args */
     96 	int ch, mntflags;
     97 	char *fs_name;
     98 	const char *errcause;
     99 
    100 	mntflags = 0;
    101 	optind = optreset = 1;		/* Reset for parse of new argv. */
    102 	while ((ch = getopt(argc, argv, "o:")) != -1)
    103 		switch (ch) {
    104 		case 'o':
    105 			getmntopts(optarg, mopts, &mntflags, 0);
    106 			break;
    107 		case '?':
    108 		default:
    109 			ext2fs_usage();
    110 		}
    111 	argc -= optind;
    112 	argv += optind;
    113 
    114 	if (argc != 2)
    115 		ext2fs_usage();
    116 
    117         args.fspec = argv[0];		/* The name of the device file. */
    118 	fs_name = argv[1];		/* The mount point. */
    119 
    120 #define DEFAULT_ROOTUID	-2
    121 	args.export.ex_root = DEFAULT_ROOTUID;
    122 	if (mntflags & MNT_RDONLY)
    123 		args.export.ex_flags = MNT_EXRDONLY;
    124 	else
    125 		args.export.ex_flags = 0;
    126 
    127 	if (mount(MOUNT_EXT2FS, fs_name, mntflags, &args) < 0) {
    128 		switch (errno) {
    129 		case EMFILE:
    130 			errcause = "mount table full";
    131 			break;
    132 		case EINVAL:
    133 			if (mntflags & MNT_UPDATE)
    134 				errcause =
    135 			    "specified device does not match mounted device";
    136 			else
    137 				errcause = "incorrect super block";
    138 			break;
    139 		default:
    140 			errcause = strerror(errno);
    141 			break;
    142 		}
    143 		errx(1, "%s on %s: %s", args.fspec, fs_name, errcause);
    144 	}
    145 	exit(0);
    146 }
    147 
    148 static void
    149 ext2fs_usage()
    150 {
    151 	(void)fprintf(stderr,
    152 		"usage: mount_ext2fs [-o options] special node\n");
    153 	exit(1);
    154 }
    155