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mount_ntfs.c revision 1.20 
      1 /* $NetBSD: mount_ntfs.c,v 1.20 2007/12/15 19:44:46 perry 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 1.20 2007/12/15 19:44:46 perry 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 <err.h>
     46 #include <grp.h>
     47 #include <pwd.h>
     48 #include <stdio.h>
     49 #include <stdlib.h>
     50 #include <string.h>
     51 #include <sysexits.h>
     52 #include <unistd.h>
     53 #include <util.h>
     54 
     55 #include <mntopts.h>
     56 #include <fattr.h>
     57 
     58 static const struct mntopt mopts[] = {
     59 	MOPT_STDOPTS,
     60 	MOPT_GETARGS,
     61 	MOPT_NULL,
     62 };
     63 
     64 static void	usage(void) __dead;
     65 int mount_ntfs(int argc, char **argv);
     66 
     67 #ifndef MOUNT_NOMAIN
     68 int
     69 main(int argc, char **argv)
     70 {
     71 	return mount_ntfs(argc, argv);
     72 }
     73 #endif
     74 
     75 int
     76 mount_ntfs(int argc, char **argv)
     77 {
     78 	struct ntfs_args args;
     79 	struct stat sb;
     80 	int c, mntflags, set_gid, set_uid, set_mask;
     81 	char *dev, *dir, canon_dev[MAXPATHLEN], canon_dir[MAXPATHLEN];
     82 	mntoptparse_t mp;
     83 
     84 	mntflags = set_gid = set_uid = set_mask = 0;
     85 	(void)memset(&args, '\0', sizeof(args));
     86 
     87 	while ((c = getopt(argc, argv, "aiu:g:m:o:")) !=  -1) {
     88 		switch (c) {
     89 		case 'u':
     90 			args.uid = a_uid(optarg);
     91 			set_uid = 1;
     92 			break;
     93 		case 'g':
     94 			args.gid = a_gid(optarg);
     95 			set_gid = 1;
     96 			break;
     97 		case 'm':
     98 			args.mode = a_mask(optarg);
     99 			set_mask = 1;
    100 			break;
    101 		case 'i':
    102 			args.flag |= NTFS_MFLAG_CASEINS;
    103 			break;
    104 		case 'a':
    105 			args.flag |= NTFS_MFLAG_ALLNAMES;
    106 			break;
    107 		case 'o':
    108 			mp = getmntopts(optarg, mopts, &mntflags, 0);
    109 			if (mp == NULL)
    110 				err(1, "getmntopts");
    111 			freemntopts(mp);
    112 			break;
    113 		case '?':
    114 		default:
    115 			usage();
    116 			break;
    117 		}
    118 	}
    119 
    120 	if (optind + 2 != argc)
    121 		usage();
    122 
    123 	dev = argv[optind];
    124 	dir = argv[optind + 1];
    125 
    126 	if (realpath(dev, canon_dev) == NULL)        /* Check device path */
    127 		err(1, "realpath %s", dev);
    128 	if (strncmp(dev, canon_dev, MAXPATHLEN)) {
    129 		warnx("\"%s\" is a relative path.", dev);
    130 		dev = canon_dev;
    131 		warnx("using \"%s\" instead.", dev);
    132 	}
    133 
    134 	if (realpath(dir, canon_dir) == NULL)        /* Check mounton path */
    135 		err(1, "realpath %s", dir);
    136 	if (strncmp(dir, canon_dir, MAXPATHLEN)) {
    137 		warnx("\"%s\" is a relative path.", dir);
    138 		dir = canon_dir;
    139 		warnx("using \"%s\" instead.", dir);
    140 	}
    141 
    142 	args.fspec = dev;
    143 	if (!set_gid || !set_uid || !set_mask) {
    144 		if (stat(dir, &sb) == -1)
    145 			err(EX_OSERR, "stat %s", dir);
    146 
    147 		if (!set_uid)
    148 			args.uid = sb.st_uid;
    149 		if (!set_gid)
    150 			args.gid = sb.st_gid;
    151 		if (!set_mask)
    152 			args.mode = sb.st_mode & (S_IRWXU | S_IRWXG | S_IRWXO);
    153 	}
    154 
    155 	if (mount(MOUNT_NTFS, dir, mntflags, &args, sizeof args) == -1)
    156 		err(EX_OSERR, "%s on %s", dev, dir);
    157 
    158 	if (mntflags & MNT_GETARGS) {
    159 		char buf[1024];
    160 		(void)snprintb(buf, sizeof(buf), NTFS_MFLAG_BITS, args.flag);
    161 		printf("uid=%d, gid=%d, mode=0%o, flags=%s\n", args.uid,
    162 		    args.gid, args.mode, buf);
    163 	}
    164 	exit (0);
    165 }
    166 
    167 static void
    168 usage(void)
    169 {
    170 	fprintf(stderr, "usage: mount_ntfs [-a] [-i] [-u user] [-g group] [-m mask] bdev dir\n");
    171 	exit(EX_USAGE);
    172 }
    173