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mount_ext2fs.c revision 1.2 
      1 /*	$NetBSD: mount_ext2fs.c,v 1.2 1997/09/15 04:31:50 lukem 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	8.2 (Berkeley) 3/27/94";
     45 #else
     46 __RCSID("$NetBSD: mount_ext2fs.c,v 1.2 1997/09/15 04:31:50 lukem Exp $");
     47 #endif
     48 #endif /* not lint */
     49 
     50 #include <sys/param.h>
     51 #include <sys/mount.h>
     52 
     53 #include <err.h>
     54 #include <errno.h>
     55 #include <stdio.h>
     56 #include <stdlib.h>
     57 #include <string.h>
     58 #include <unistd.h>
     59 
     60 #include "mntopts.h"
     61 
     62 void	ext2fs_usage __P((void));
     63 int	main __P((int, char *[]));
     64 
     65 static const struct mntopt mopts[] = {
     66 	MOPT_STDOPTS,
     67 	MOPT_ASYNC,
     68 	MOPT_SYNC,
     69 	MOPT_UPDATE,
     70 	MOPT_RELOAD,
     71 	{ NULL }
     72 };
     73 
     74 int
     75 main(argc, argv)
     76 	int argc;
     77 	char *argv[];
     78 {
     79 	extern int optreset;
     80 	struct ufs_args args;		/* XXX ffs_args */
     81 	int ch, mntflags;
     82 	char *fs_name, *errcause;
     83 
     84 	mntflags = 0;
     85 	optind = optreset = 1;		/* Reset for parse of new argv. */
     86 	while ((ch = getopt(argc, argv, "o:")) != -1)
     87 		switch (ch) {
     88 		case 'o':
     89 			getmntopts(optarg, mopts, &mntflags);
     90 			break;
     91 		case '?':
     92 		default:
     93 			ext2fs_usage();
     94 		}
     95 	argc -= optind;
     96 	argv += optind;
     97 
     98 	if (argc != 2)
     99 		ext2fs_usage();
    100 
    101         args.fspec = argv[0];		/* The name of the device file. */
    102 	fs_name = argv[1];		/* The mount point. */
    103 
    104 #define DEFAULT_ROOTUID	-2
    105 	args.export.ex_root = DEFAULT_ROOTUID;
    106 	if (mntflags & MNT_RDONLY)
    107 		args.export.ex_flags = MNT_EXRDONLY;
    108 	else
    109 		args.export.ex_flags = 0;
    110 
    111 	if (mount(MOUNT_EXT2FS, fs_name, mntflags, &args) < 0) {
    112 		switch (errno) {
    113 		case EMFILE:
    114 			errcause = "mount table full";
    115 			break;
    116 		case EINVAL:
    117 			if (mntflags & MNT_UPDATE)
    118 				errcause =
    119 			    "specified device does not match mounted device";
    120 			else
    121 				errcause = "incorrect super block";
    122 			break;
    123 		default:
    124 			errcause = strerror(errno);
    125 			break;
    126 		}
    127 		errx(1, "%s on %s: %s", args.fspec, fs_name, errcause);
    128 	}
    129 	exit(0);
    130 }
    131 
    132 void
    133 ext2fs_usage()
    134 {
    135 	(void)fprintf(stderr,
    136 		"usage: mount_ext2fs [-o options] special node\n");
    137 	exit(1);
    138 }
    139