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mount_msdos.c revision 1.24 
      1 /* $NetBSD: mount_msdos.c,v 1.24 2000/10/30 20:57:00 jdolecek Exp $ */
      2 
      3 /*
      4  * Copyright (c) 1994 Christopher G. Demetriou
      5  * 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 for the
     18  *          NetBSD Project.  See http://www.netbsd.org/ for
     19  *          information about NetBSD.
     20  * 4. The name of the author may not be used to endorse or promote products
     21  *    derived from this software without specific prior written permission.
     22  *
     23  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     24  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     25  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     26  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     27  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     28  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     29  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     30  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     31  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     32  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     33  *
     34  * <<Id: LICENSE,v 1.2 2000/06/14 15:57:33 cgd Exp>>
     35  */
     36 
     37 #include <sys/cdefs.h>
     38 #ifndef lint
     39 __RCSID("$NetBSD: mount_msdos.c,v 1.24 2000/10/30 20:57:00 jdolecek Exp $");
     40 #endif /* not lint */
     41 
     42 #include <sys/cdefs.h>
     43 #include <sys/param.h>
     44 #include <sys/mount.h>
     45 #include <sys/stat.h>
     46 #include <msdosfs/msdosfsmount.h>
     47 #include <ctype.h>
     48 #include <err.h>
     49 #include <grp.h>
     50 #include <pwd.h>
     51 #include <stdio.h>
     52 #include <stdlib.h>
     53 #include <string.h>
     54 #include <unistd.h>
     55 
     56 #include "mntopts.h"
     57 #include <fattr.h>
     58 
     59 static const struct mntopt mopts[] = {
     60 	MOPT_STDOPTS,
     61 	MOPT_ASYNC,
     62 	MOPT_SYNC,
     63 	MOPT_UPDATE,
     64 	{ NULL }
     65 };
     66 
     67 int	main __P((int, char *[]));
     68 int	mount_msdos __P((int argc, char **argv));
     69 static void	usage __P((void));
     70 
     71 #ifndef MOUNT_NOMAIN
     72 int
     73 main(argc, argv)
     74 	int argc;
     75 	char **argv;
     76 {
     77 	return mount_msdos(argc, argv);
     78 }
     79 #endif
     80 
     81 int
     82 mount_msdos(argc, argv)
     83 	int argc;
     84 	char **argv;
     85 {
     86 	struct msdosfs_args args;
     87 	struct stat sb;
     88 	int c, mntflags, set_gid, set_uid, set_mask;
     89 	char *dev, *dir, ndir[MAXPATHLEN+1];
     90 
     91 	mntflags = set_gid = set_uid = set_mask = 0;
     92 	(void)memset(&args, '\0', sizeof(args));
     93 
     94 	while ((c = getopt(argc, argv, "Gsl9u:g:m:o:")) != -1) {
     95 		switch (c) {
     96 		case 'G':
     97 			args.flags |= MSDOSFSMNT_GEMDOSFS;
     98 			break;
     99 		case 's':
    100 			args.flags |= MSDOSFSMNT_SHORTNAME;
    101 			break;
    102 		case 'l':
    103 			args.flags |= MSDOSFSMNT_LONGNAME;
    104 			break;
    105 		case '9':
    106 			args.flags |= MSDOSFSMNT_NOWIN95;
    107 			break;
    108 		case 'u':
    109 			args.uid = a_uid(optarg);
    110 			set_uid = 1;
    111 			break;
    112 		case 'g':
    113 			args.gid = a_gid(optarg);
    114 			set_gid = 1;
    115 			break;
    116 		case 'm':
    117 			args.mask = a_mask(optarg);
    118 			set_mask = 1;
    119 			break;
    120 		case 'o':
    121 			getmntopts(optarg, mopts, &mntflags, 0);
    122 			break;
    123 		case '?':
    124 		default:
    125 			usage();
    126 			break;
    127 		}
    128 	}
    129 
    130 	if (optind + 2 != argc)
    131 		usage();
    132 
    133 	dev = argv[optind];
    134 	dir = argv[optind + 1];
    135 	if (dir[0] != '/') {
    136 		warnx("\"%s\" is a relative path.", dir);
    137 		if (getcwd(ndir, sizeof(ndir)) == NULL)
    138 			err(1, "getcwd");
    139 		strncat(ndir, "/", sizeof(ndir) - strlen(ndir) - 1);
    140 		strncat(ndir, dir, sizeof(ndir) - strlen(ndir) - 1);
    141 		dir = ndir;
    142 		warnx("using \"%s\" instead.", dir);
    143 	}
    144 
    145 	args.fspec = dev;
    146 	args.export.ex_root = -2;	/* unchecked anyway on DOS fs */
    147 	if (mntflags & MNT_RDONLY)
    148 		args.export.ex_flags = MNT_EXRDONLY;
    149 	else
    150 		args.export.ex_flags = 0;
    151 	if (!set_gid || !set_uid || !set_mask) {
    152 		if (stat(dir, &sb) == -1)
    153 			err(1, "stat %s", dir);
    154 
    155 		if (!set_uid)
    156 			args.uid = sb.st_uid;
    157 		if (!set_gid)
    158 			args.gid = sb.st_gid;
    159 		if (!set_mask)
    160 			args.mask = sb.st_mode & (S_IRWXU | S_IRWXG | S_IRWXO);
    161 	}
    162 
    163 	if (mount(MOUNT_MSDOS, dir, mntflags, &args) < 0)
    164 		err(1, "%s on %s", dev, dir);
    165 
    166 	exit (0);
    167 }
    168 
    169 static void
    170 usage()
    171 {
    172 
    173 	fprintf(stderr, "usage: mount_msdos [-o options] [-u user] [-g group] [-m mask] bdev dir\n");
    174 	exit(1);
    175 }
    176