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mount_sysvbfs.c revision 1.1 
      1 /*	$NetBSD: mount_sysvbfs.c,v 1.1 2005/12/29 14:53:45 tsutsui 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 __RCSID("$NetBSD: mount_sysvbfs.c,v 1.1 2005/12/29 14:53:45 tsutsui Exp $");
     40 #endif /* not lint */
     41 
     42 #include <sys/param.h>
     43 #include <sys/mount.h>
     44 
     45 #include <err.h>
     46 #include <errno.h>
     47 #include <stdio.h>
     48 #include <stdlib.h>
     49 
     50 #include <string.h>
     51 #include <unistd.h>
     52 
     53 #include <mntopts.h>
     54 #include <fs/sysvbfs/sysvbfs.h>
     55 
     56 static void	sysvbfs_usage(void);
     57 int	mount_sysvbfs(int argc, char **argv);
     58 
     59 static const struct mntopt mopts[] = {
     60 	MOPT_STDOPTS,
     61 	MOPT_UPDATE,
     62 	MOPT_GETARGS,
     63 	{ NULL }
     64 };
     65 
     66 #ifndef MOUNT_NOMAIN
     67 int
     68 main(int argc, char **argv)
     69 {
     70 
     71 	return mount_sysvbfs(argc, argv);
     72 }
     73 #endif
     74 
     75 int
     76 mount_sysvbfs(int argc, char *argv[])
     77 {
     78 	struct sysvbfs_args args;
     79 	int ch, mntflags;
     80 	char fs_name[MAXPATHLEN], canon_dev[MAXPATHLEN];
     81 	const char *errcause;
     82 
     83 	mntflags = 0;
     84 	optind = optreset = 1;		/* Reset for parse of new argv. */
     85 	while ((ch = getopt(argc, argv, "o:")) != -1)
     86 		switch (ch) {
     87 		case 'o':
     88 			getmntopts(optarg, mopts, &mntflags, 0);
     89 			break;
     90 		case '?':
     91 		default:
     92 			sysvbfs_usage();
     93 		}
     94 	argc -= optind;
     95 	argv += optind;
     96 
     97 	if (argc != 2)
     98 		sysvbfs_usage();
     99 
    100 	if (realpath(argv[0], canon_dev) == NULL)     /* Check device path */
    101 		err(EXIT_FAILURE, "realpath %s", argv[0]);
    102 	if (strncmp(argv[0], canon_dev, MAXPATHLEN)) {
    103 		warnx("\"%s\" is a relative path.", argv[0]);
    104 		warnx("using \"%s\" instead.", canon_dev);
    105 	}
    106         args.fspec = canon_dev;
    107 
    108 	if (realpath(argv[1], fs_name) == NULL)      /* Check mounton path */
    109 		err(EXIT_FAILURE, "realpath %s", argv[1]);
    110 	if (strncmp(argv[1], fs_name, MAXPATHLEN)) {
    111 		warnx("\"%s\" is a relative path.", argv[1]);
    112 		warnx("using \"%s\" instead.", fs_name);
    113 	}
    114 
    115 	if (mount(MOUNT_SYSVBFS, fs_name, mntflags, &args) < 0) {
    116 		switch (errno) {
    117 		case EMFILE:
    118 			errcause = "mount table full";
    119 			break;
    120 		case EINVAL:
    121 			if (mntflags & MNT_UPDATE)
    122 				errcause =
    123 			    "specified device does not match mounted device";
    124 			else
    125 				errcause = "incorrect super block";
    126 			break;
    127 		default:
    128 			errcause = strerror(errno);
    129 			break;
    130 		}
    131 		errx(EXIT_FAILURE, "%s on %s: %s",
    132 		    args.fspec, fs_name, errcause);
    133 	}
    134 	exit(EXIT_SUCCESS);
    135 }
    136 
    137 static void
    138 sysvbfs_usage(void)
    139 {
    140 
    141 	(void)fprintf(stderr, "usage: %s [-o options] special node\n",
    142 	    getprogname());
    143 	exit(EXIT_FAILURE);
    144 }
    145