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mount_ext2fs.c revision 1.11 
      1 /*	$NetBSD: mount_ext2fs.c,v 1.11 2003/08/07 10:04:27 agc 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. Neither the name of the University nor the names of its contributors
     16  *    may be used to endorse or promote products derived from this software
     17  *    without specific prior written permission.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     29  * SUCH DAMAGE.
     30  */
     31 
     32 #include <sys/cdefs.h>
     33 #ifndef lint
     34 __COPYRIGHT("@(#) Copyright (c) 1993, 1994\n\
     35 	The Regents of the University of California.  All rights reserved.\n");
     36 #endif /* not lint */
     37 
     38 #ifndef lint
     39 #if 0
     40 static char sccsid[] = "@(#)mount_ufs.c	8.4 (Berkeley) 4/26/95";
     41 #else
     42 __RCSID("$NetBSD: mount_ext2fs.c,v 1.11 2003/08/07 10:04:27 agc Exp $");
     43 #endif
     44 #endif /* not lint */
     45 
     46 #include <sys/param.h>
     47 #include <sys/mount.h>
     48 #include <ufs/ufs/ufsmount.h>
     49 
     50 #include <err.h>
     51 #include <errno.h>
     52 #include <stdio.h>
     53 #include <stdlib.h>
     54 
     55 #include <string.h>
     56 #include <unistd.h>
     57 
     58 #include <mntopts.h>
     59 
     60 static void	ext2fs_usage __P((void));
     61 int	main __P((int, char *[]));
     62 int	mount_ext2fs __P((int argc, char **argv));
     63 
     64 static const struct mntopt mopts[] = {
     65 	MOPT_STDOPTS,
     66 	MOPT_ASYNC,
     67 	MOPT_SYNC,
     68 	MOPT_UPDATE,
     69 	MOPT_RELOAD,
     70 	MOPT_FORCE,
     71 	MOPT_GETARGS,
     72 	MOPT_NODEVMTIME,
     73 	{ NULL }
     74 };
     75 
     76 #ifndef MOUNT_NOMAIN
     77 int
     78 main(argc, argv)
     79 	int argc;
     80 	char *argv[];
     81 {
     82 	return mount_ext2fs(argc, argv);
     83 }
     84 #endif
     85 
     86 int
     87 mount_ext2fs(argc, argv)
     88 	int argc;
     89 	char *argv[];
     90 {
     91 	struct ufs_args args;		/* XXX ffs_args */
     92 	int ch, mntflags;
     93 	char *fs_name;
     94 	const char *errcause;
     95 
     96 	mntflags = 0;
     97 	optind = optreset = 1;		/* Reset for parse of new argv. */
     98 	while ((ch = getopt(argc, argv, "o:")) != -1)
     99 		switch (ch) {
    100 		case 'o':
    101 			getmntopts(optarg, mopts, &mntflags, 0);
    102 			break;
    103 		case '?':
    104 		default:
    105 			ext2fs_usage();
    106 		}
    107 	argc -= optind;
    108 	argv += optind;
    109 
    110 	if (argc != 2)
    111 		ext2fs_usage();
    112 
    113         args.fspec = argv[0];		/* The name of the device file. */
    114 	fs_name = argv[1];		/* The mount point. */
    115 
    116 #define DEFAULT_ROOTUID	-2
    117 	args.export.ex_root = DEFAULT_ROOTUID;
    118 	if (mntflags & MNT_RDONLY)
    119 		args.export.ex_flags = MNT_EXRDONLY;
    120 	else
    121 		args.export.ex_flags = 0;
    122 
    123 	if (mount(MOUNT_EXT2FS, fs_name, mntflags, &args) < 0) {
    124 		switch (errno) {
    125 		case EMFILE:
    126 			errcause = "mount table full";
    127 			break;
    128 		case EINVAL:
    129 			if (mntflags & MNT_UPDATE)
    130 				errcause =
    131 			    "specified device does not match mounted device";
    132 			else
    133 				errcause = "incorrect super block";
    134 			break;
    135 		default:
    136 			errcause = strerror(errno);
    137 			break;
    138 		}
    139 		errx(1, "%s on %s: %s", args.fspec, fs_name, errcause);
    140 	}
    141 	exit(0);
    142 }
    143 
    144 static void
    145 ext2fs_usage()
    146 {
    147 	(void)fprintf(stderr,
    148 		"usage: mount_ext2fs [-o options] special node\n");
    149 	exit(1);
    150 }
    151