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mount_ntfs.c revision 1.16 
      1 /* $NetBSD: mount_ntfs.c,v 1.16 2007/01/17 21:59:49 hubertf Exp $ */
      2 
      3 /*
      4  * Copyright (c) 1994 Christopher G. Demetriou
      5  * Copyright (c) 1999 Semen Ustimenko
      6  * All rights reserved.
      7  *
      8  * Redistribution and use in source and binary forms, with or without
      9  * modification, are permitted provided that the following conditions
     10  * are met:
     11  * 1. Redistributions of source code must retain the above copyright
     12  *    notice, this list of conditions and the following disclaimer.
     13  * 2. Redistributions in binary form must reproduce the above copyright
     14  *    notice, this list of conditions and the following disclaimer in the
     15  *    documentation and/or other materials provided with the distribution.
     16  * 3. All advertising materials mentioning features or use of this software
     17  *    must display the following acknowledgement:
     18  *      This product includes software developed by Christopher G. Demetriou.
     19  * 4. The name of the author may not be used to endorse or promote products
     20  *    derived from this software without specific prior written permission
     21  *
     22  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     23  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     24  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     25  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     26  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     27  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     28  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     29  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     30  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     31  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     32  *
     33  * Id: mount_ntfs.c,v 1.1.1.1 1999/02/03 03:51:19 semenu Exp
     34  */
     35 
     36 #include <sys/cdefs.h>
     37 #ifndef lint
     38 __RCSID("$NetBSD: mount_ntfs.c,v 1.16 2007/01/17 21:59:49 hubertf Exp $");
     39 #endif
     40 
     41 #include <sys/param.h>
     42 #include <sys/mount.h>
     43 #include <sys/stat.h>
     44 #include <ntfs/ntfsmount.h>
     45 #include <ctype.h>
     46 #include <err.h>
     47 #include <grp.h>
     48 #include <pwd.h>
     49 #include <stdio.h>
     50 #include <stdlib.h>
     51 #include <string.h>
     52 #include <sysexits.h>
     53 #include <unistd.h>
     54 #include <util.h>
     55 
     56 #include <mntopts.h>
     57 #include <fattr.h>
     58 
     59 static const struct mntopt mopts[] = {
     60 	MOPT_STDOPTS,
     61 	MOPT_GETARGS,
     62 	MOPT_NULL,
     63 };
     64 
     65 static void	usage(void) __attribute__((__noreturn__));
     66 int mount_ntfs(int argc, char **argv);
     67 
     68 #ifndef MOUNT_NOMAIN
     69 int
     70 main(int argc, char **argv)
     71 {
     72 	return mount_ntfs(argc, argv);
     73 }
     74 #endif
     75 
     76 int
     77 mount_ntfs(int argc, char **argv)
     78 {
     79 	struct ntfs_args args;
     80 	struct stat sb;
     81 	int c, mntflags, set_gid, set_uid, set_mask;
     82 	char *dev, *dir, canon_dev[MAXPATHLEN], canon_dir[MAXPATHLEN];
     83 	mntoptparse_t mp;
     84 
     85 	mntflags = set_gid = set_uid = set_mask = 0;
     86 	(void)memset(&args, '\0', sizeof(args));
     87 
     88 	while ((c = getopt(argc, argv, "aiu:g:m:o:")) !=  -1) {
     89 		switch (c) {
     90 		case 'u':
     91 			args.uid = a_uid(optarg);
     92 			set_uid = 1;
     93 			break;
     94 		case 'g':
     95 			args.gid = a_gid(optarg);
     96 			set_gid = 1;
     97 			break;
     98 		case 'm':
     99 			args.mode = a_mask(optarg);
    100 			set_mask = 1;
    101 			break;
    102 		case 'i':
    103 			args.flag |= NTFS_MFLAG_CASEINS;
    104 			break;
    105 		case 'a':
    106 			args.flag |= NTFS_MFLAG_ALLNAMES;
    107 			break;
    108 		case 'o':
    109 			mp = getmntopts(optarg, mopts, &mntflags, 0);
    110 			if (mp == NULL)
    111 				err(1, "getmntopts");
    112 			freemntopts(mp);
    113 			break;
    114 		case '?':
    115 		default:
    116 			usage();
    117 			break;
    118 		}
    119 	}
    120 
    121 	if (optind + 2 != argc)
    122 		usage();
    123 
    124 	dev = argv[optind];
    125 	dir = argv[optind + 1];
    126 
    127 	if (realpath(dev, canon_dev) == NULL)        /* Check device path */
    128 		err(1, "realpath %s", dev);
    129 	if (strncmp(dev, canon_dev, MAXPATHLEN)) {
    130 		warnx("\"%s\" is a relative path.", dev);
    131 		dev = canon_dev;
    132 		warnx("using \"%s\" instead.", dev);
    133 	}
    134 
    135 	if (realpath(dir, canon_dir) == NULL)        /* Check mounton path */
    136 		err(1, "realpath %s", dir);
    137 	if (strncmp(dir, canon_dir, MAXPATHLEN)) {
    138 		warnx("\"%s\" is a relative path.", dir);
    139 		dir = canon_dir;
    140 		warnx("using \"%s\" instead.", dir);
    141 	}
    142 
    143 	args.fspec = dev;
    144 	if (!set_gid || !set_uid || !set_mask) {
    145 		if (stat(dir, &sb) == -1)
    146 			err(EX_OSERR, "stat %s", dir);
    147 
    148 		if (!set_uid)
    149 			args.uid = sb.st_uid;
    150 		if (!set_gid)
    151 			args.gid = sb.st_gid;
    152 		if (!set_mask)
    153 			args.mode = sb.st_mode & (S_IRWXU | S_IRWXG | S_IRWXO);
    154 	}
    155 
    156 	if (mount(MOUNT_NTFS, dir, mntflags, &args) < 0)
    157 		err(EX_OSERR, "%s on %s", dev, dir);
    158 
    159 	if (mntflags & MNT_GETARGS) {
    160 		char buf[1024];
    161 		(void)snprintb(buf, sizeof(buf), NTFS_MFLAG_BITS, args.flag);
    162 		printf("uid=%d, gid=%d, mode=0%o, flags=%s\n", args.uid,
    163 		    args.gid, args.mode, buf);
    164 	}
    165 	exit (0);
    166 }
    167 
    168 static void
    169 usage(void)
    170 {
    171 	fprintf(stderr, "usage: mount_ntfs [-a] [-i] [-u user] [-g group] [-m mask] bdev dir\n");
    172 	exit(EX_USAGE);
    173 }
    174