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OpenVPN: Routing policy
[tomato.git] / release / src / router / ntfs-3g / ntfsprogs / ntfslabel.c
blobc0494ab5fd6246eeff75e7c736731db6ac62d309
1 /**
2 * ntfslabel - Part of the Linux-NTFS project.
3 *
4 * Copyright (c) 2002 Matthew J. Fanto
5 * Copyright (c) 2002-2005 Anton Altaparmakov
6 * Copyright (c) 2002-2003 Richard Russon
7 * Copyright (c) 2012-2014 Jean-Pierre Andre
8 *
9 * This utility will display/change the label on an NTFS partition.
10 *
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation; either version 2 of the License, or
14 * (at your option) any later version.
15 *
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
20 *
21 * You should have received a copy of the GNU General Public License
22 * along with this program (in the main directory of the Linux-NTFS
23 * distribution in the file COPYING); if not, write to the Free Software
24 * Foundation,Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
25 */
26
27 #include "config.h"
28
29 #ifdef HAVE_STDLIB_H
30 #include <stdlib.h>
31 #endif
32 #ifdef HAVE_STDIO_H
33 #include <stdio.h>
34 #endif
35 #ifdef HAVE_STRING_H
36 #include <string.h>
37 #endif
38 #ifdef HAVE_ERRNO_H
39 #include <errno.h>
40 #endif
41 #ifdef HAVE_LOCALE_H
42 #include <locale.h>
43 #endif
44 #ifdef HAVE_GETOPT_H
45 #include <getopt.h>
46 #endif
47 #ifdef HAVE_UNISTD_H
48 #include <unistd.h>
49 #endif
50
51 #include "debug.h"
52 #include "mft.h"
53 #include "utils.h"
54 /* #include "version.h" */
55 #include "logging.h"
56 #include "misc.h"
57
58 static const char *EXEC_NAME = "ntfslabel";
59
60 static struct options {
61 char *device; /* Device/File to work with */
62 char *label; /* Set the label to this */
63 int quiet; /* Less output */
64 int verbose; /* Extra output */
65 int force; /* Override common sense */
66 int new_serial; /* Change the serial number */
67 unsigned long long serial; /* Forced serial number value */
68 int noaction; /* Do not write to disk */
69 } opts;
70
71 /**
72 * version - Print version information about the program
73 *
74 * Print a copyright statement and a brief description of the program.
75 *
76 * Return: none
77 */
78 static void version(void)
79 {
80 ntfs_log_info("\n%s v%s (libntfs-3g) - Display, or set, the label for an "
81 "NTFS Volume.\n\n", EXEC_NAME, VERSION);
82 ntfs_log_info("Copyright (c)\n");
83 ntfs_log_info(" 2002 Matthew J. Fanto\n");
84 ntfs_log_info(" 2002-2005 Anton Altaparmakov\n");
85 ntfs_log_info(" 2002-2003 Richard Russon\n");
86 ntfs_log_info(" 2012-2014 Jean-Pierre Andre\n");
87 ntfs_log_info("\n%s\n%s%s\n", ntfs_gpl, ntfs_bugs, ntfs_home);
88 }
89
90 /**
91 * usage - Print a list of the parameters to the program
92 *
93 * Print a list of the parameters and options for the program.
94 *
95 * Return: none
96 */
97 static void usage(void)
98 {
99 ntfs_log_info("\nUsage: %s [options] device [label]\n"
100 " -n, --no-action Do not write to disk\n"
101 " -f, --force Use less caution\n"
102 " --new-serial Set a new serial number\n"
103 " --new-half-serial Set a partial new serial number\n"
104 " -q, --quiet Less output\n"
105 " -v, --verbose More output\n"
106 " -V, --version Display version information\n"
107 " -h, --help Display this help\n\n",
108 EXEC_NAME);
109 ntfs_log_info("%s%s\n", ntfs_bugs, ntfs_home);
110 }
111
112 /**
113 * parse_options - Read and validate the programs command line
114 *
115 * Read the command line, verify the syntax and parse the options.
116 * This function is very long, but quite simple.
117 *
118 * Return: 1 Success
119 * 0 Error, one or more problems
120 */
121 static int parse_options(int argc, char *argv[])
122 {
123 static const char *sopt = "-fh?IinqvV";
124 static const struct option lopt[] = {
125 { "force", no_argument, NULL, 'f' },
126 { "help", no_argument, NULL, 'h' },
127 { "new-serial", optional_argument, NULL, 'I' },
128 { "new-half-serial", optional_argument, NULL, 'i' },
129 { "no-action", no_argument, NULL, 'n' },
130 { "quiet", no_argument, NULL, 'q' },
131 { "verbose", no_argument, NULL, 'v' },
132 { "version", no_argument, NULL, 'V' },
133 { NULL, 0, NULL, 0 },
134 };
135
136 int c = -1;
137 int err = 0;
138 int ver = 0;
139 int help = 0;
140 int levels = 0;
141 char *endserial;
142
143 opterr = 0; /* We'll handle the errors, thank you. */
144
145 while ((c = getopt_long(argc, argv, sopt, lopt, NULL)) != -1) {
146 switch (c) {
147 case 1: /* A non-option argument */
148 if (!err && !opts.device)
149 opts.device = argv[optind-1];
150 else if (!err && !opts.label)
151 opts.label = argv[optind-1];
152 else
153 err++;
154 break;
155 case 'f':
156 opts.force++;
157 break;
158 case 'h':
159 help++;
160 break;
161 case 'I' : /* not proposed as a short option letter */
162 if (optarg) {
163 opts.serial = strtoull(optarg, &endserial, 16);
164 if (*endserial)
165 ntfs_log_error("Bad hexadecimal serial number.\n");
166 }
167 opts.new_serial |= 2;
168 break;
169 case 'i' : /* not proposed as a short option letter */
170 if (optarg) {
171 opts.serial = strtoull(optarg, &endserial, 16)
172 << 32;
173 if (*endserial)
174 ntfs_log_error("Bad hexadecimal serial number.\n");
175 }
176 opts.new_serial |= 1;
177 break;
178 case 'n':
179 opts.noaction++;
180 break;
181 case 'q':
182 opts.quiet++;
183 ntfs_log_clear_levels(NTFS_LOG_LEVEL_QUIET);
184 break;
185 case 'v':
186 opts.verbose++;
187 ntfs_log_set_levels(NTFS_LOG_LEVEL_VERBOSE);
188 break;
189 case 'V':
190 ver++;
191 break;
192 case '?':
193 if (strncmp (argv[optind-1], "--log-", 6) == 0) {
194 if (!ntfs_log_parse_option (argv[optind-1]))
195 err++;
196 break;
197 }
198 /* fall through */
199 default:
200 ntfs_log_error("Unknown option '%s'.\n", argv[optind-1]);
201 err++;
202 break;
203 }
204 }
205
206 /* Make sure we're in sync with the log levels */
207 levels = ntfs_log_get_levels();
208 if (levels & NTFS_LOG_LEVEL_VERBOSE)
209 opts.verbose++;
210 if (!(levels & NTFS_LOG_LEVEL_QUIET))
211 opts.quiet++;
212
213 if (help || ver) {
214 opts.quiet = 0;
215 } else {
216 if (opts.device == NULL) {
217 if (argc > 1)
218 ntfs_log_error("You must specify a device.\n");
219 err++;
220 }
221
222 if (opts.quiet && opts.verbose) {
223 ntfs_log_error("You may not use --quiet and --verbose at "
224 "the same time.\n");
225 err++;
226 }
227 }
228
229 if (ver)
230 version();
231 if (help || err)
232 usage();
233
234 /* tri-state 0 : done, 1 : error, -1 : proceed */
235 return (err ? 1 : (help || ver ? 0 : -1));
236 }
237
238 static int change_serial(ntfs_volume *vol, u64 sector, le64 serial_number,
239 NTFS_BOOT_SECTOR *bs, NTFS_BOOT_SECTOR *oldbs)
240 {
241 int res;
242 le64 mask;
243 BOOL same;
244
245 res = -1;
246 if ((ntfs_pread(vol->dev, sector << vol->sector_size_bits,
247 vol->sector_size, bs) == vol->sector_size)) {
248 same = TRUE;
249 if (!sector)
250 /* save the real bootsector */
251 memcpy(oldbs, bs, vol->sector_size);
252 else
253 /* backup bootsector must be similar */
254 same = !memcmp(oldbs, bs, vol->sector_size);
255 if (same) {
256 if (opts.new_serial & 2)
257 bs->volume_serial_number = serial_number;
258 else {
259 mask = const_cpu_to_le64(~0x0ffffffffULL);
260 bs->volume_serial_number
261 = (serial_number & mask)
262 | (bs->volume_serial_number & ~mask);
263 }
264 if (opts.noaction
265 || (ntfs_pwrite(vol->dev,
266 sector << vol->sector_size_bits,
267 vol->sector_size, bs) == vol->sector_size)) {
268 res = 0;
269 }
270 } else {
271 ntfs_log_info("* Warning : the backup boot sector"
272 " does not match (leaving unchanged)\n");
273 res = 0;
274 }
275 }
276 return (res);
277 }
278
279 static int set_new_serial(ntfs_volume *vol)
280 {
281 NTFS_BOOT_SECTOR *bs; /* full boot sectors */
282 NTFS_BOOT_SECTOR *oldbs; /* full original boot sector */
283 le64 serial_number;
284 u64 number_of_sectors;
285 u64 sn;
286 int res;
287
288 res = -1;
289 bs = (NTFS_BOOT_SECTOR*)ntfs_malloc(vol->sector_size);
290 oldbs = (NTFS_BOOT_SECTOR*)ntfs_malloc(vol->sector_size);
291 if (bs && oldbs) {
292 if (opts.serial)
293 serial_number = cpu_to_le64(opts.serial);
294 else {
295 /* different values for parallel processes */
296 srandom(time((time_t*)NULL) ^ (getpid() << 16));
297 sn = ((u64)random() << 32)
298 | ((u64)random() & 0xffffffff);
299 serial_number = cpu_to_le64(sn);
300 }
301 if (!change_serial(vol, 0, serial_number, bs, oldbs)) {
302 number_of_sectors = le64_to_cpu(bs->number_of_sectors);
303 if (!change_serial(vol, number_of_sectors,
304 serial_number, bs, oldbs)) {
305 ntfs_log_info("New serial number : %016llx\n",
306 (long long)le64_to_cpu(
307 bs->volume_serial_number));
308 res = 0;
309 }
310 }
311 free(bs);
312 free(oldbs);
313 }
314 if (res)
315 ntfs_log_info("Error setting a new serial number\n");
316 return (res);
317 }
318
319 static int print_serial(ntfs_volume *vol)
320 {
321 NTFS_BOOT_SECTOR *bs; /* full boot sectors */
322 int res;
323
324 res = -1;
325 bs = (NTFS_BOOT_SECTOR*)ntfs_malloc(vol->sector_size);
326 if (bs
327 && (ntfs_pread(vol->dev, 0,
328 vol->sector_size, bs) == vol->sector_size)) {
329 ntfs_log_info("Serial number : %016llx\n",
330 (long long)le64_to_cpu(bs->volume_serial_number));
331 res = 0;
332 free(bs);
333 }
334 if (res)
335 ntfs_log_info("Error getting the serial number\n");
336 return (res);
337 }
338
339 /**
340 * print_label - display the current label of a mounted ntfs partition.
341 * @dev: device to read the label from
342 * @mnt_flags: mount flags of the device or 0 if not mounted
343 * @mnt_point: mount point of the device or NULL
344 *
345 * Print the label of the device @dev.
346 */
347 static int print_label(ntfs_volume *vol, unsigned long mnt_flags)
348 {
349 int result = 0;
350 //XXX significant?
351 if ((mnt_flags & (NTFS_MF_MOUNTED | NTFS_MF_READONLY)) ==
352 NTFS_MF_MOUNTED) {
353 ntfs_log_error("%s is mounted read-write, results may be "
354 "unreliable.\n", opts.device);
355 result = 1;
356 }
357
358 if (opts.verbose)
359 ntfs_log_info("Volume label : %s\n", vol->vol_name);
360 else
361 ntfs_log_info("%s\n", vol->vol_name);
362 return result;
363 }
364
365 /**
366 * change_label - change the current label on a device
367 * @dev: device to change the label on
368 * @mnt_flags: mount flags of the device or 0 if not mounted
369 * @mnt_point: mount point of the device or NULL
370 * @label: the new label
371 *
372 * Change the label on the device @dev to @label.
373 */
374 static int change_label(ntfs_volume *vol, char *label)
375 {
376 ntfschar *new_label = NULL;
377 int label_len;
378 int result = 0;
379
380 label_len = ntfs_mbstoucs(label, &new_label);
381 if (label_len == -1) {
382 ntfs_log_perror("Unable to convert label string to Unicode");
383 return 1;
384 }
385 else if (label_len*sizeof(ntfschar) > 0x100) {
386 ntfs_log_warning("New label is too long. Maximum %u characters "
387 "allowed. Truncating %u excess characters.\n",
388 (unsigned)(0x100 / sizeof(ntfschar)),
389 (unsigned)(label_len -
390 (0x100 / sizeof(ntfschar))));
391 label_len = 0x100 / sizeof(ntfschar);
392 label[label_len] = const_cpu_to_le16(0);
393 }
394
395 if(!opts.noaction)
396 result = ntfs_volume_rename(vol, new_label, label_len) ? 1 : 0;
397
398 free(new_label);
399 return result;
400 }
401
402 /**
403 * main - Begin here
404 *
405 * Start from here.
406 *
407 * Return: 0 Success, the program worked
408 * 1 Error, something went wrong
409 */
410 int main(int argc, char **argv)
411 {
412 unsigned long mnt_flags = 0;
413 int result = 0;
414 ntfs_volume *vol;
415
416 ntfs_log_set_handler(ntfs_log_handler_outerr);
417
418 result = parse_options(argc, argv);
419 if (result >= 0)
420 return (result);
421
422 result = 0;
423 utils_set_locale();
424
425 if ((opts.label || opts.new_serial)
426 && !opts.noaction
427 && !opts.force
428 && !ntfs_check_if_mounted(opts.device, &mnt_flags)
429 && (mnt_flags & NTFS_MF_MOUNTED)) {
430 ntfs_log_error("Cannot make changes to a mounted device\n");
431 result = 1;
432 goto abort;
433 }
434
435 if (!opts.label && !opts.new_serial)
436 opts.noaction++;
437
438 vol = utils_mount_volume(opts.device,
439 (opts.noaction ? NTFS_MNT_RDONLY : 0) |
440 (opts.force ? NTFS_MNT_RECOVER : 0));
441 if (!vol)
442 return 1;
443
444 if (opts.new_serial) {
445 result = set_new_serial(vol);
446 if (result)
447 goto unmount;
448 } else {
449 if (opts.verbose)
450 result = print_serial(vol);
451 }
452 if (opts.label)
453 result = change_label(vol, opts.label);
454 else
455 result = print_label(vol, mnt_flags);
456
457 unmount :
458 ntfs_umount(vol, FALSE);
459 abort :
460 /* "result" may be a negative reply of a library function */
461 return (result ? 1 : 0);
462 }
463
Tomato firmware and modifications.