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mount_fdesc.c revision 1.21
      1 /*	$NetBSD: mount_fdesc.c,v 1.21 2007/07/16 17:06:53 pooka Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1992, 1993, 1994
      5  *	The Regents of the University of California.  All rights reserved.
      6  *
      7  * This code is derived from software contributed to Berkeley by
      8  * Jan-Simon Pendry.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  * 3. Neither the name of the University nor the names of its contributors
     19  *    may be used to endorse or promote products derived from this software
     20  *    without specific prior written permission.
     21  *
     22  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     23  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     24  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     25  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     26  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     27  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     28  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     29  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     30  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     31  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     32  * SUCH DAMAGE.
     33  */
     34 
     35 /*
     36  * Copyright (c) 1990, 1992 Jan-Simon Pendry
     37  *
     38  * This code is derived from software contributed to Berkeley by
     39  * Jan-Simon Pendry.
     40  *
     41  * Redistribution and use in source and binary forms, with or without
     42  * modification, are permitted provided that the following conditions
     43  * are met:
     44  * 1. Redistributions of source code must retain the above copyright
     45  *    notice, this list of conditions and the following disclaimer.
     46  * 2. Redistributions in binary form must reproduce the above copyright
     47  *    notice, this list of conditions and the following disclaimer in the
     48  *    documentation and/or other materials provided with the distribution.
     49  * 3. All advertising materials mentioning features or use of this software
     50  *    must display the following acknowledgement:
     51  *	This product includes software developed by the University of
     52  *	California, Berkeley and its contributors.
     53  * 4. Neither the name of the University nor the names of its contributors
     54  *    may be used to endorse or promote products derived from this software
     55  *    without specific prior written permission.
     56  *
     57  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     58  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     59  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     60  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     61  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     62  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     63  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     64  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     65  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     66  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     67  * SUCH DAMAGE.
     68  */
     69 
     70 #include <sys/cdefs.h>
     71 #ifndef lint
     72 __COPYRIGHT("@(#) Copyright (c) 1992, 1993, 1994\n\
     73 	The Regents of the University of California.  All rights reserved.\n");
     74 #endif /* not lint */
     75 
     76 #ifndef lint
     77 #if 0
     78 static char sccsid[] = "@(#)mount_fdesc.c	8.3 (Berkeley) 4/26/95";
     79 #else
     80 __RCSID("$NetBSD: mount_fdesc.c,v 1.21 2007/07/16 17:06:53 pooka Exp $");
     81 #endif
     82 #endif /* not lint */
     83 
     84 #include <sys/param.h>
     85 #include <sys/mount.h>
     86 
     87 #include <err.h>
     88 #include <unistd.h>
     89 #include <stdio.h>
     90 #include <stdlib.h>
     91 #include <string.h>
     92 
     93 #include <mntopts.h>
     94 
     95 static const struct mntopt mopts[] = {
     96 	MOPT_STDOPTS,
     97 	MOPT_GETARGS,
     98 	MOPT_NULL,
     99 };
    100 
    101 static void	usage(void);
    102 int	mount_fdesc(int argc, char **argv);
    103 
    104 #ifndef MOUNT_NOMAIN
    105 int
    106 main(int argc, char **argv)
    107 {
    108 	return mount_fdesc(argc, argv);
    109 }
    110 #endif
    111 
    112 int
    113 mount_fdesc(int argc, char *argv[])
    114 {
    115 	int ch, mntflags;
    116 	char canon_dir[MAXPATHLEN];
    117 	mntoptparse_t mp;
    118 
    119 	mntflags = 0;
    120 	while ((ch = getopt(argc, argv, "o:")) != -1)
    121 		switch (ch) {
    122 		case 'o':
    123 			mp = getmntopts(optarg, mopts, &mntflags, 0);
    124 			if (mp == NULL)
    125 				err(1, "getmntopts");
    126 			freemntopts(mp);
    127 			break;
    128 		case '?':
    129 		default:
    130 			usage();
    131 		}
    132 	argc -= optind;
    133 	argv += optind;
    134 
    135 	if (argc != 2)
    136 		usage();
    137 
    138 	if (realpath(argv[1], canon_dir) == NULL)    /* Check mounton path */
    139 		err(1, "realpath %s", argv[1]);
    140 	if (strncmp(argv[1], canon_dir, MAXPATHLEN)) {
    141 		warnx("\"%s\" is a relative path.", argv[1]);
    142 		warnx("using \"%s\" instead.", canon_dir);
    143 	}
    144 
    145 	if (mount(MOUNT_FDESC, canon_dir, mntflags, NULL, 0) == -1)
    146 		err(1, "fdesc on %s", argv[1]);
    147 	exit(0);
    148 }
    149 
    150 static void
    151 usage(void)
    152 {
    153 	(void)fprintf(stderr,
    154 		"usage: mount_fdesc [-o options] fdesc mount_point\n");
    155 	exit(1);
    156 }
    157