aboutsummaryrefslogtreecommitdiff
path: root/ubi-utils/ubinfo.c
blob: 82d4f18623ffe81408fe56e9a631432c59aa2cdd (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
/*
 * Copyright (C) 2007, 2008 Nokia Corporation.
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 as published by
 * the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
 * more details.
 *
 * You should have received a copy of the GNU General Public License along with
 * this program; if not, write to the Free Software Foundation, Inc., 51
 * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
 */

/*
 * An utility to get UBI information.
 *
 * Author: Artem Bityutskiy
 */

#define PROGRAM_NAME    "ubinfo"

#include <stdint.h>
#include <stdio.h>
#include <getopt.h>
#include <stdlib.h>
#include <string.h>

#include <libubi.h>
#include "common.h"

/* The variables below are set by command line arguments */
struct args {
	int devn;
	int vol_id;
	int all;
	const char *node;
	const char *vol_name;
};

static struct args args = {
	.vol_id = -1,
	.devn = -1,
	.all = 0,
	.node = NULL,
	.vol_name = NULL,
};

static const char doc[] = PROGRAM_NAME " version " VERSION
			 " - a tool to print UBI information.";

static const char optionsstr[] =
"-d, --devn=<UBI device number>  UBI device number to get information about\n"
"-n, --vol_id=<volume ID>        ID of UBI volume to print information about\n"
"-N, --name=<volume name>        name of UBI volume to print information about\n"
"-a, --all                       print information about all devices and volumes,\n"
"                                or about all volumes if the UBI device was\n"
"                                specified\n"
"-h, --help                      print help message\n"
"-V, --version                   print program version";

static const char usage[] =
"Usage 1: " PROGRAM_NAME " [-d <UBI device number>] [-n <volume ID> | -N <volume name>] [-a] [-h] [-V]\n"
"\t\t[--vol_id=<volume ID> | --name <volume name>] [--devn <UBI device number>] [--all] [--help] [--version]\n"
"Usage 2: " PROGRAM_NAME " <UBI device node file name> [-a] [-h] [-V] [--all] [--help] [--version]\n"
"Usage 3: " PROGRAM_NAME " <UBI volume node file name> [-h] [-V] [--help] [--version]\n\n"
"Example 1: " PROGRAM_NAME " - (no arguments) print general UBI information\n"
"Example 2: " PROGRAM_NAME " -d 1 - print information about UBI device number 1\n"
"Example 3: " PROGRAM_NAME " /dev/ubi0 -a - print information about all volumes of UBI\n"
"           device /dev/ubi0\n"
"Example 4: " PROGRAM_NAME " /dev/ubi1_0 - print information about UBI volume /dev/ubi1_0\n"
"Example 5: " PROGRAM_NAME " -a - print all information\n";

static const struct option long_options[] = {
	{ .name = "devn",      .has_arg = 1, .flag = NULL, .val = 'd' },
	{ .name = "vol_id",    .has_arg = 1, .flag = NULL, .val = 'n' },
	{ .name = "name",      .has_arg = 1, .flag = NULL, .val = 'N' },
	{ .name = "all",       .has_arg = 0, .flag = NULL, .val = 'a' },
	{ .name = "help",      .has_arg = 0, .flag = NULL, .val = 'h' },
	{ .name = "version",   .has_arg = 0, .flag = NULL, .val = 'V' },
	{ NULL, 0, NULL, 0},
};

static int parse_opt(int argc, char * const argv[])
{
	while (1) {
		int key, error = 0;

		key = getopt_long(argc, argv, "an:N:d:hV", long_options, NULL);
		if (key == -1)
			break;

		switch (key) {
		case 'a':
			args.all = 1;
			break;

		case 'n':
			args.vol_id = simple_strtoul(optarg, &error);
			if (error || args.vol_id < 0)
				return errmsg("bad volume ID: " "\"%s\"", optarg);
			break;

		case 'N':
			args.vol_name = optarg;
			break;

		case 'd':
			args.devn = simple_strtoul(optarg, &error);
			if (error || args.devn < 0)
				return errmsg("bad UBI device number: \"%s\"", optarg);

			break;

		case 'h':
			printf("%s\n\n", doc);
			printf("%s\n\n", usage);
			printf("%s\n", optionsstr);
			exit(EXIT_SUCCESS);

		case 'V':
			common_print_version();
			exit(EXIT_SUCCESS);

		case ':':
			return errmsg("parameter is missing");

		default:
			fprintf(stderr, "Use -h for help\n");
			return -1;
		}
	}

	if (optind == argc - 1)
		args.node = argv[optind];
	else if (optind < argc)
		return errmsg("more then one UBI device specified (use -h for help)");

	return 0;
}

static int translate_dev(libubi_t libubi, const char *node)
{
	int err;

	err = ubi_probe_node(libubi, node);
	if (err == -1) {
		if (errno != ENODEV)
			return sys_errmsg("error while probing \"%s\"", node);
		return errmsg("\"%s\" does not correspond to any UBI device or volume", node);
	}

	if (err == 1) {
		struct ubi_dev_info dev_info;

		err = ubi_get_dev_info(libubi, node, &dev_info);
		if (err)
			return sys_errmsg("cannot get information about UBI device \"%s\"", node);

		args.devn = dev_info.dev_num;
	} else {
		struct ubi_vol_info vol_info;

		err = ubi_get_vol_info(libubi, node, &vol_info);
		if (err)
			return sys_errmsg("cannot get information about UBI volume \"%s\"", node);

		if (args.vol_id != -1)
			return errmsg("both volume character device node (\"%s\") and "
				      "volume ID (%d) are specify, use only one of them"
				      "(use -h for help)", node, args.vol_id);

		args.devn = vol_info.dev_num;
		args.vol_id = vol_info.vol_id;
	}

	return 0;
}

static int get_vol_id_by_name(libubi_t libubi, int dev_num, const char *name)
{
	int err;
	struct ubi_vol_info vol_info;

	err = ubi_get_vol_info1_nm(libubi, dev_num, name, &vol_info);
	if (err)
		return sys_errmsg("cannot get information about volume \"%s\" on ubi%d\n", name, dev_num);

	args.vol_id = vol_info.vol_id;

	return 0;
}

static int print_vol_info(libubi_t libubi, int dev_num, int vol_id)
{
	int err;
	struct ubi_vol_info vol_info;

	err = ubi_get_vol_info1(libubi, dev_num, vol_id, &vol_info);
	if (err)
		return sys_errmsg("cannot get information about UBI volume %d on ubi%d",
				  vol_id, dev_num);

	printf("Volume ID:   %d (on ubi%d)\n", vol_info.vol_id, vol_info.dev_num);
	printf("Type:        %s\n",
	       vol_info.type == UBI_DYNAMIC_VOLUME ?  "dynamic" : "static");
	printf("Alignment:   %d\n", vol_info.alignment);

	printf("Size:        %d LEBs (", vol_info.rsvd_lebs);
	util_print_bytes(vol_info.rsvd_bytes, 0);
	printf(")\n");

	if (vol_info.type == UBI_STATIC_VOLUME) {
		printf("Data bytes:  ");
		util_print_bytes(vol_info.data_bytes, 1);
		printf("\n");
	}
	printf("State:       %s\n", vol_info.corrupted ? "corrupted" : "OK");
	printf("Name:        %s\n", vol_info.name);
	printf("Character device major/minor: %d:%d\n",
	       vol_info.major, vol_info.minor);

	return 0;
}

static int print_dev_info(libubi_t libubi, int dev_num, int all)
{
	int i, err, first = 1;
	struct ubi_dev_info dev_info;
	struct ubi_vol_info vol_info;

	err = ubi_get_dev_info1(libubi, dev_num, &dev_info);
	if (err)
		return sys_errmsg("cannot get information about UBI device %d", dev_num);

	printf("ubi%d\n", dev_info.dev_num);
	printf("Volumes count:                           %d\n", dev_info.vol_count);
	printf("Logical eraseblock size:                 ");
	util_print_bytes(dev_info.leb_size, 0);
	printf("\n");

	printf("Total amount of logical eraseblocks:     %d (", dev_info.total_lebs);
	util_print_bytes(dev_info.total_bytes, 0);
	printf(")\n");

	printf("Amount of available logical eraseblocks: %d (", dev_info.avail_lebs);
	util_print_bytes(dev_info.avail_bytes, 0);
	printf(")\n");

	printf("Maximum count of volumes                 %d\n", dev_info.max_vol_count);
	printf("Count of bad physical eraseblocks:       %d\n", dev_info.bad_count);
	printf("Count of reserved physical eraseblocks:  %d\n", dev_info.bad_rsvd);
	printf("Current maximum erase counter value:     %lld\n", dev_info.max_ec);
	printf("Minimum input/output unit size:          %d %s\n",
	       dev_info.min_io_size, dev_info.min_io_size > 1 ? "bytes" : "byte");
	printf("Character device major/minor:            %d:%d\n",
	       dev_info.major, dev_info.minor);

	if (dev_info.vol_count == 0)
		return 0;

	printf("Present volumes:                         ");
	for (i = dev_info.lowest_vol_id;
	     i <= dev_info.highest_vol_id; i++) {
		err = ubi_get_vol_info1(libubi, dev_info.dev_num, i, &vol_info);
		if (err == -1) {
			if (errno == ENOENT)
				continue;

			return sys_errmsg("libubi failed to probe volume %d on ubi%d",
					  i, dev_info.dev_num);
		}

		if (!first)
			printf(", %d", i);
		else {
			printf("%d", i);
			first = 0;
		}
	}
	printf("\n");

	if (!all)
		return 0;

	first = 1;
	printf("\n");

	for (i = dev_info.lowest_vol_id;
	     i <= dev_info.highest_vol_id; i++) {
		if(!first)
			printf("-----------------------------------\n");
		err = ubi_get_vol_info1(libubi, dev_info.dev_num, i, &vol_info);
		if (err == -1) {
			if (errno == ENOENT)
				continue;

			return sys_errmsg("libubi failed to probe volume %d on ubi%d",
					  i, dev_info.dev_num);
		}
		first = 0;

		err = print_vol_info(libubi, dev_info.dev_num, i);
		if (err)
			return err;
	}

	return 0;
}

static int print_general_info(libubi_t libubi, int all)
{
	int i, err, first = 1;
	struct ubi_info ubi_info;
	struct ubi_dev_info dev_info;

	err = ubi_get_info(libubi, &ubi_info);
	if (err)
		return sys_errmsg("cannot get UBI information");

	printf("UBI version:                    %d\n", ubi_info.version);
	printf("Count of UBI devices:           %d\n", ubi_info.dev_count);
	if (ubi_info.ctrl_major != -1)
		printf("UBI control device major/minor: %d:%d\n",
		       ubi_info.ctrl_major, ubi_info.ctrl_minor);
	else
		printf("UBI control device is not supported by this kernel\n");

	if (ubi_info.dev_count == 0)
		return 0;

	printf("Present UBI devices:            ");
	for (i = ubi_info.lowest_dev_num;
	     i <= ubi_info.highest_dev_num; i++) {
		err = ubi_get_dev_info1(libubi, i, &dev_info);
		if (err == -1) {
			if (errno == ENOENT)
				continue;

			printf("\n");
			return sys_errmsg("libubi failed to probe UBI device %d", i);
		}

		if (!first)
			printf(", ubi%d", i);
		else {
			printf("ubi%d", i);
			first = 0;
		}
	}
	printf("\n");

	if (!all)
		return 0;

	first = 1;
	printf("\n");

	for (i = ubi_info.lowest_dev_num;
	     i <= ubi_info.highest_dev_num; i++) {
		if (!ubi_dev_present(libubi, i))
			continue;
		if(!first)
			printf("\n===================================\n\n");
		first = 0;
		err = print_dev_info(libubi, i, all);
		if (err)
			return err;
	}
	return 0;
}

int main(int argc, char * const argv[])
{
	int err;
	libubi_t libubi;

	err = parse_opt(argc, argv);
	if (err)
		return -1;

	libubi = libubi_open();
	if (!libubi) {
		if (errno == 0)
			return errmsg("UBI is not present in the system");
		return sys_errmsg("cannot open libubi");
	}

	if (args.node) {
		/*
		 * A character device was specified, translate this into UBI
		 * device number and volume ID.
		 */
		err = translate_dev(libubi, args.node);
		if (err)
			goto out_libubi;
	}

	if (args.vol_name) {
		err = get_vol_id_by_name(libubi, args.devn, args.vol_name);
		if (err)
			goto out_libubi;
	}

	if (args.vol_id != -1 && args.devn == -1) {
		errmsg("volume ID is specified, but UBI device number is not "
		       "(use -h for help)\n");
		goto out_libubi;
	}

	if (args.devn != -1 && args.vol_id != -1) {
		print_vol_info(libubi, args.devn, args.vol_id);
		goto out;
	}

	if (args.devn == -1 && args.vol_id == -1)
		err = print_general_info(libubi, args.all);
	else if (args.devn != -1 && args.vol_id == -1)
		err = print_dev_info(libubi, args.devn, args.all);

	if (err)
		goto out_libubi;

out:
	libubi_close(libubi);
	return 0;

out_libubi:
	libubi_close(libubi);
	return -1;
}