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mount_ffs.c revision 1.27.2.1 
      1 /*	$NetBSD: mount_ffs.c,v 1.27.2.1 2012/10/30 18:59:30 yamt 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\
     35  The Regents of the University of California.  All rights reserved.");
     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_ffs.c,v 1.27.2.1 2012/10/30 18:59:30 yamt 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 #include "mountprog.h"
     61 #include "mount_ffs.h"
     62 
     63 __dead static void	ffs_usage(void);
     64 
     65 static const struct mntopt mopts[] = {
     66 	MOPT_STDOPTS,
     67 	MOPT_ASYNC,
     68 	MOPT_SYNC,
     69 	MOPT_UPDATE,
     70 	MOPT_RELOAD,
     71 	MOPT_NOATIME,
     72 	MOPT_NODEVMTIME,
     73 	MOPT_FORCE,
     74 	MOPT_SOFTDEP,
     75 	MOPT_LOG,
     76 	MOPT_GETARGS,
     77 	MOPT_EXTATTR,
     78 	MOPT_DISCARD,
     79 	MOPT_NULL,
     80 };
     81 
     82 #ifndef MOUNT_NOMAIN
     83 int
     84 main(int argc, char **argv)
     85 {
     86 
     87 	setprogname(argv[0]);
     88 	return mount_ffs(argc, argv);
     89 }
     90 #endif
     91 
     92 void
     93 mount_ffs_parseargs(int argc, char *argv[],
     94 	struct ufs_args *args, int *mntflags,
     95 	char *canon_dev, char *canon_dir)
     96 {
     97 	int ch;
     98 	mntoptparse_t mp;
     99 
    100 	memset(args, 0, sizeof(*args));
    101 	*mntflags = 0;
    102 	optind = optreset = 1;		/* Reset for parse of new argv. */
    103 	while ((ch = getopt(argc, argv, "o:")) != -1)
    104 		switch (ch) {
    105 		case 'o':
    106 			mp = getmntopts(optarg, mopts, mntflags, 0);
    107 			if (mp == NULL)
    108 				err(1, "getmntopts");
    109 			freemntopts(mp);
    110 			break;
    111 		case '?':
    112 		default:
    113 			ffs_usage();
    114 		}
    115 	argc -= optind;
    116 	argv += optind;
    117 
    118 	if (argc != 2)
    119 		ffs_usage();
    120 
    121 	pathadj(argv[0], canon_dev);
    122 	args->fspec = canon_dev;
    123 
    124 	pathadj(argv[1], canon_dir);
    125 }
    126 
    127 int
    128 mount_ffs(int argc, char *argv[])
    129 {
    130 	char fs_name[MAXPATHLEN], canon_dev[MAXPATHLEN];
    131 	struct ufs_args args;
    132 	const char *errcause;
    133 	int mntflags;
    134 
    135 	mount_ffs_parseargs(argc, argv, &args, &mntflags, canon_dev, fs_name);
    136 
    137 	if (mount(MOUNT_FFS, fs_name, mntflags, &args, sizeof args) == -1) {
    138 		switch (errno) {
    139 		case EMFILE:
    140 			errcause = "mount table full";
    141 			break;
    142 		case EINVAL:
    143 			if (mntflags & MNT_UPDATE)
    144 				errcause =
    145 			    "specified device does not match mounted device";
    146 			else
    147 				errcause = "incorrect super block";
    148 			break;
    149 		default:
    150 			errcause = strerror(errno);
    151 			break;
    152 		}
    153 		errx(1, "%s on %s: %s", args.fspec, fs_name, errcause);
    154 	}
    155 	exit(0);
    156 }
    157 
    158 static void
    159 ffs_usage(void)
    160 {
    161 	fprintf(stderr, "usage: %s [-o options] special node\n", getprogname());
    162 	exit(1);
    163 }
    164