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      1 /*	$NetBSD: mount_fdesc.c,v 1.27 2020/07/26 08:20:22 mlelstv 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\
     73  The Regents of the University of California.  All rights reserved.");
     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 1.27 2020/07/26 08:20:22 mlelstv 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 #include "mountprog.h"
     96 #include "mount_fdesc.h"
     97 
     98 static const struct mntopt mopts[] = {
     99 	MOPT_STDOPTS,
    100 	MOPT_GETARGS,
    101 	MOPT_NULL,
    102 };
    103 
    104 __dead static void	usage(void);
    105 int	mount_fdesc(int argc, char **argv);
    106 
    107 #ifndef MOUNT_NOMAIN
    108 int
    109 main(int argc, char **argv)
    110 {
    111 	return mount_fdesc(argc, argv);
    112 }
    113 #endif
    114 
    115 void
    116 mount_fdesc_parseargs(int argc, char *argv[], void *dummy, int *mntflags,
    117 	char *canon_dev, char *canon_dir)
    118 {
    119 	int ch;
    120 	mntoptparse_t mp;
    121 
    122 	*mntflags = 0;
    123 	while ((ch = getopt(argc, argv, "o:")) != -1)
    124 		switch (ch) {
    125 		case 'o':
    126 			mp = getmntopts(optarg, mopts, mntflags, 0);
    127 			if (mp == NULL)
    128 				err(1, "getmntopts");
    129 			freemntopts(mp);
    130 			break;
    131 		case '?':
    132 		default:
    133 			usage();
    134 		}
    135 	argc -= optind;
    136 	argv += optind;
    137 
    138 	if (argc != 2)
    139 		usage();
    140 
    141 	/* getargs is a NULL op and kernel would return EINVAL */
    142 	if (*mntflags & MNT_GETARGS)
    143 		exit(0);
    144 
    145 	strlcpy(canon_dev, argv[0], MAXPATHLEN);
    146 	pathadj(argv[1], canon_dir);
    147 }
    148 
    149 int
    150 mount_fdesc(int argc, char *argv[])
    151 {
    152 	int mntflags;
    153 	char canon_dev[MAXPATHLEN], canon_dir[MAXPATHLEN];
    154 
    155 	mount_fdesc_parseargs(argc, argv, NULL, &mntflags,
    156 	    canon_dev, canon_dir);
    157 	if (mount(MOUNT_FDESC, canon_dir, mntflags, NULL, 0) == -1)
    158 		err(1, "fdesc on %s", canon_dir);
    159 	exit(0);
    160 }
    161 
    162 static void
    163 usage(void)
    164 {
    165 	(void)fprintf(stderr,
    166 		"usage: mount_fdesc [-o options] fdesc mount_point\n");
    167 	exit(1);
    168 }
    169