mount_ntfs.c revision 267654 
1/*
2 * Copyright (c) 1994 Christopher G. Demetriou
3 * Copyright (c) 1999 Semen Ustimenko
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 *    notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 *    notice, this list of conditions and the following disclaimer in the
13 *    documentation and/or other materials provided with the distribution.
14 * 3. All advertising materials mentioning features or use of this software
15 *    must display the following acknowledgement:
16 *      This product includes software developed by Christopher G. Demetriou.
17 * 4. The name of the author may not be used to endorse or promote products
18 *    derived from this software without specific prior written permission
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
21 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
22 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
23 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
24 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
25 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
29 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 *
31 * $FreeBSD: releng/9.3/sbin/mount_ntfs/mount_ntfs.c 232343 2012-03-01 15:51:19Z jh $
32 *
33 */
34
35#include <sys/cdefs.h>
36#include <sys/param.h>
37#define NTFS
38#include <sys/mount.h>
39#include <sys/stat.h>
40#include <sys/module.h>
41#include <sys/iconv.h>
42#include <sys/linker.h>
43#include <fs/ntfs/ntfsmount.h>
44#include <ctype.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 <libutil.h>
54
55#include "mntopts.h"
56
57#define TRANSITION_PERIOD_HACK
58
59static struct mntopt mopts[] = {
60	MOPT_STDOPTS,
61	MOPT_END
62};
63
64static gid_t	a_gid(char *);
65static uid_t	a_uid(char *);
66static mode_t	a_mask(char *);
67static void	usage(void) __dead2;
68
69static int	set_charset(struct ntfs_args *);
70
71int
72main(int argc, char *argv[])
73{
74	struct ntfs_args args;
75	struct stat sb;
76	int c, mntflags, set_gid, set_uid, set_mask;
77	char *dev, *dir, mntpath[MAXPATHLEN];
78
79	mntflags = set_gid = set_uid = set_mask = 0;
80	(void)memset(&args, '\0', sizeof(args));
81	args.cs_ntfs = NULL;
82	args.cs_local = NULL;
83
84#ifdef TRANSITION_PERIOD_HACK
85	while ((c = getopt(argc, argv, "aiu:g:m:o:C:W:")) !=  -1) {
86#else
87	while ((c = getopt(argc, argv, "aiu:g:m:o:C:")) !=  -1) {
88#endif
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			getmntopts(optarg, mopts, &mntflags, 0);
110			break;
111		case 'C':
112			args.cs_local = malloc(ICONV_CSNMAXLEN);
113			if (args.cs_local == NULL)
114				err(EX_OSERR, "malloc()");
115			strncpy(args.cs_local,
116			    kiconv_quirkcs(optarg, KICONV_VENDOR_MICSFT),
117			    ICONV_CSNMAXLEN);
118			break;
119#ifdef TRANSITION_PERIOD_HACK
120		case 'W':
121			args.cs_local = malloc(ICONV_CSNMAXLEN);
122			if (args.cs_local == NULL)
123				err(EX_OSERR, "malloc()");
124			if (strcmp(optarg, "iso22dos") == 0) {
125				strcpy(args.cs_local, "ISO8859-2");
126			} else if (strcmp(optarg, "iso72dos") == 0) {
127				strcpy(args.cs_local, "ISO8859-7");
128			} else if (strcmp(optarg, "koi2dos") == 0) {
129				strcpy(args.cs_local, "KOI8-R");
130			} else if (strcmp(optarg, "koi8u2dos") == 0) {
131				strcpy(args.cs_local, "KOI8-U");
132			} else {
133				err(EX_NOINPUT, "%s", optarg);
134			}
135			break;
136#endif /* TRANSITION_PERIOD_HACK */
137		case '?':
138		default:
139			usage();
140			break;
141		}
142	}
143
144	if (optind + 2 != argc)
145		usage();
146
147	dev = argv[optind];
148	dir = argv[optind + 1];
149
150	if (args.cs_local) {
151		if (set_charset(&args) == -1)
152			err(EX_OSERR, "ntfs_iconv");
153		args.flag |= NTFS_MFLAG_KICONV;
154		/*
155		 * XXX
156		 * Force to be MNT_RDONLY,
157		 * since only reading is supported right now,
158		 */
159		mntflags |= MNT_RDONLY;
160	}
161
162	/*
163	 * Resolve the mountpoint with realpath(3) and remove unnecessary
164	 * slashes from the devicename if there are any.
165	 */
166	(void)checkpath(dir, mntpath);
167	(void)rmslashes(dev, dev);
168
169	args.fspec = dev;
170	args.export.ex_root = 65534;	/* unchecked anyway on DOS fs */
171	if (mntflags & MNT_RDONLY)
172		args.export.ex_flags = MNT_EXRDONLY;
173	else
174		args.export.ex_flags = 0;
175	if (!set_gid || !set_uid || !set_mask) {
176		if (stat(mntpath, &sb) == -1)
177			err(EX_OSERR, "stat %s", mntpath);
178
179		if (!set_uid)
180			args.uid = sb.st_uid;
181		if (!set_gid)
182			args.gid = sb.st_gid;
183		if (!set_mask)
184			args.mode = sb.st_mode & (S_IRWXU | S_IRWXG | S_IRWXO);
185	}
186
187	if (mount("ntfs", mntpath, mntflags, &args) < 0)
188		err(EX_OSERR, "%s", dev);
189
190	exit (0);
191}
192
193gid_t
194a_gid(char *s)
195{
196	struct group *gr;
197	char *gname;
198	gid_t gid;
199
200	if ((gr = getgrnam(s)) != NULL)
201		gid = gr->gr_gid;
202	else {
203		for (gname = s; *s && isdigit(*s); ++s);
204		if (!*s)
205			gid = atoi(gname);
206		else
207			errx(EX_NOUSER, "unknown group id: %s", gname);
208	}
209	return (gid);
210}
211
212uid_t
213a_uid(char *s)
214{
215	struct passwd *pw;
216	char *uname;
217	uid_t uid;
218
219	if ((pw = getpwnam(s)) != NULL)
220		uid = pw->pw_uid;
221	else {
222		for (uname = s; *s && isdigit(*s); ++s);
223		if (!*s)
224			uid = atoi(uname);
225		else
226			errx(EX_NOUSER, "unknown user id: %s", uname);
227	}
228	return (uid);
229}
230
231mode_t
232a_mask(char *s)
233{
234	int done, rv=0;
235	char *ep;
236
237	done = 0;
238	if (*s >= '0' && *s <= '7') {
239		done = 1;
240		rv = strtol(optarg, &ep, 8);
241	}
242	if (!done || rv < 0 || *ep)
243		errx(EX_USAGE, "invalid file mode: %s", s);
244	return (rv);
245}
246
247void
248usage(void)
249{
250#ifdef TRANSITION_PERIOD_HACK
251	fprintf(stderr, "%s\n%s\n",
252	"usage: mount_ntfs [-a] [-i] [-u user] [-g group] [-m mask]",
253	"                  [-C charset] [-W u2wtable] special node");
254#else
255	fprintf(stderr, "usage: mount_ntfs [-a] [-i] [-u user] [-g group] [-m mask] [-C charset] special node\n");
256#endif
257	exit(EX_USAGE);
258}
259
260int
261set_charset(struct ntfs_args *pargs)
262{
263	int error;
264
265	if (modfind("ntfs_iconv") < 0)
266		if (kldload("ntfs_iconv") < 0 || modfind("ntfs_iconv") < 0) {
267			warnx( "cannot find or load \"ntfs_iconv\" kernel module");
268			return (-1);
269		}
270
271	if ((pargs->cs_ntfs = malloc(ICONV_CSNMAXLEN)) == NULL)
272		return (-1);
273	strncpy(pargs->cs_ntfs, ENCODING_UNICODE, ICONV_CSNMAXLEN);
274	error = kiconv_add_xlat16_cspairs(pargs->cs_ntfs, pargs->cs_local);
275	if (error)
276		return (-1);
277
278	return (0);
279}
280