aboutsummaryrefslogtreecommitdiff
path: root/tests/ubi-tests/io_update.c
blob: fe3ad7b2da168ee4d3bd38077638e64da9364806 (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
/*
 * Copyright (c) International Business Machines Corp., 2006
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * 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., 675 Mass Ave, Cambridge, MA 02139, USA.
 *
 * Author: Artem B. Bityutskiy
 *
 * Test UBI volume update and atomic LEB change
 */

#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
#include <string.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>

#include <libubi.h>
#include <mtd/ubi-user.h>
#define PROGRAM_NAME "io_update"
#include "common.h"
#include "helpers.h"

static libubi_t libubi;
static struct ubi_dev_info dev_info;
const char *node;

#define SEQUENCES(io, s) {           \
	{3*(s)-(io)-1, 1},           \
	{512},                       \
	{666},                       \
	{2048},                      \
	{(io), (io), MAX_NAND_PAGE_SIZE},     \
	{(io)+1, (io)+1, MAX_NAND_PAGE_SIZE}, \
	{MAX_NAND_PAGE_SIZE},                 \
	{MAX_NAND_PAGE_SIZE-1},               \
	{MAX_NAND_PAGE_SIZE+(io)},            \
	{(s)},                       \
	{(s)-1},                     \
	{(s)+1},                     \
	{(io), (s)+1},               \
	{(s)+(io), MAX_NAND_PAGE_SIZE},       \
	{2*(s), MAX_NAND_PAGE_SIZE},          \
	{MAX_NAND_PAGE_SIZE, 2*(s), 1},       \
	{MAX_NAND_PAGE_SIZE, 2*(s)},          \
	{2*(s)-1, 2*(s)-1},          \
	{3*(s), MAX_NAND_PAGE_SIZE + 1},      \
	{1, MAX_NAND_PAGE_SIZE},              \
	{(io), (s)}                  \
}

#define SEQ_SZ 21

/*
 * test_update1 - helper function for test_update().
 */
static int test_update1(struct ubi_vol_info *vol_info, int leb_change)
{
	long long total_len = leb_change ? vol_info->leb_size
					 : vol_info->rsvd_bytes;
	int sequences[SEQ_SZ][3] = SEQUENCES(dev_info.min_io_size,
					     leb_change ? dev_info.min_io_size * 2
					     		: vol_info->leb_size);
	char vol_node[strlen(UBI_VOLUME_PATTERN) + 100];
	unsigned char *buf = NULL;
	unsigned char *buf1 = NULL;
	int fd, i, j;
	int ret1 = -1;

	buf = malloc(total_len);
	if (!buf) {
		failed("malloc");
		goto out;
	}

	buf1 = malloc(total_len);
	if (!buf1) {
		failed("malloc");
		goto out;
	}

	sprintf(vol_node, UBI_VOLUME_PATTERN, dev_info.dev_num,
		vol_info->vol_id);

	fd = open(vol_node, O_RDWR);
	if (fd == -1) {
		failed("open");
		errorm("cannot open \"%s\"\n", node);
		goto out;
	}

	for (i = 0; i < SEQ_SZ; i++) {
		int ret, stop = 0, len = 0;
		off_t off = 0;
		long long test_len;

		/*
		 * test_len is LEB size (if we test atomic LEB change) or
		 * volume size (if we test update). For better test coverage,
		 * use a little smaller LEB change/update length.
		 */
		test_len = total_len - (rand() % (total_len / 10));

		if (leb_change) {
			if (ubi_leb_change_start(libubi, fd, 0, test_len)) {
				failed("ubi_update_start");
				goto close;
			}
		} else {
			if (ubi_update_start(libubi, fd, test_len)) {
				failed("ubi_update_start");
				goto close;
			}
		}

		for (j = 0; off < test_len; j++) {
			int n, rnd_len, l;

			if (!stop) {
				if (sequences[i][j] != 0)
					l = len = sequences[i][j];
				else
					stop = 1;
			}

			/*
			 * Fill some part of the write buffer with random data,
			 * and the other part with 0xFFs to test how UBI
			 * stripes 0xFFs multiple of I/O unit size.
			 */
			if (off + l > test_len)
				l = test_len - off;
			rnd_len = rand() % (l + 1);
			for (n = 0; n < rnd_len; n++)
				buf[off + n] = (unsigned char)rand();
			memset(buf + off + rnd_len, 0xFF, l - rnd_len);

			/*
			 * Deliberately pass len instead of l (len may be
			 * greater then l if this is the last chunk) because
			 * UBI have to read only l bytes anyway.
			 */
			ret = write(fd, buf + off, len);
			if (ret < 0) {
				failed("write");
				errorm("failed to write %d bytes at offset "
				       "%lld", len, (long long)off);
				goto close;
			}
			len = l;
			if (ret != len) {
				errorm("failed to write %d bytes at offset "
				       "%lld, wrote %d", len, (long long)off, ret);
				goto close;
			}
			off += len;
		}

		/* Check data */
		if ((ret = lseek(fd, 0, SEEK_SET)) != 0) {
			failed("lseek");
			errorm("cannot seek to 0");
			goto close;
		}

		memset(buf1, 0x01, test_len);

		if (vol_info->type == UBI_STATIC_VOLUME)
			/*
			 * Static volume must not let use read more then it
			 * contains.
			 */
			ret = read(fd, buf1, test_len + 100);
		else
			ret = read(fd, buf1, test_len);
		if (ret < 0) {
			failed("read");
			errorm("failed to read %d bytes", test_len);
			goto close;
		}
		if (ret != test_len) {
			errorm("failed to read %d bytes, read %d", test_len, ret);
			goto close;
		}
		if (memcmp(buf, buf1, test_len)) {
			errorm("data corruption");
			goto close;
		}
	}

	ret1 = 0;
close:
	close(fd);
out:
	free(buf);
	free(buf1);
	return ret1;
}

/**
 * test_update - check volume update and atomic LEB change capabilities.
 *
 * @type  volume type (%UBI_DYNAMIC_VOLUME or %UBI_STATIC_VOLUME)
 *
 * This function returns %0 in case of success and %-1 in case of failure.
 */
static int test_update(int type)
{
	struct ubi_mkvol_request req;
	const char *name = PROGRAM_NAME ":io_update()";
	int alignments[] = ALIGNMENTS(dev_info.leb_size);
	struct ubi_vol_info vol_info;
	char vol_node[strlen(UBI_VOLUME_PATTERN) + 100];
	unsigned int i;

	for (i = 0; i < sizeof(alignments)/sizeof(int); i++) {
		int leb_size;

		req.vol_id = UBI_VOL_NUM_AUTO;
		req.vol_type = type;
		req.name = name;

		req.alignment = alignments[i];
		req.alignment -= req.alignment % dev_info.min_io_size;
		if (req.alignment == 0)
			req.alignment = dev_info.min_io_size;

		leb_size = dev_info.leb_size - dev_info.leb_size % req.alignment;
		req.bytes =  MIN_AVAIL_EBS * leb_size;

		if (ubi_mkvol(libubi, node, &req)) {
			failed("ubi_mkvol");
			return -1;
		}

		sprintf(vol_node, UBI_VOLUME_PATTERN, dev_info.dev_num,
			req.vol_id);
		if (ubi_get_vol_info(libubi, vol_node, &vol_info)) {
			failed("ubi_get_vol_info");
			goto remove;
		}

		if (test_update1(&vol_info, 0)) {
			errorm("alignment = %d", req.alignment);
			goto remove;
		}

		if (vol_info.type != UBI_STATIC_VOLUME) {
			if (test_update1(&vol_info, 1)) {
				errorm("alignment = %d", req.alignment);
				goto remove;
			}
		}

		if (ubi_rmvol(libubi, node, req.vol_id)) {
			failed("ubi_rmvol");
			return -1;
		}
	}

	return 0;

remove:
	ubi_rmvol(libubi, node, req.vol_id);
	return -1;
}

int main(int argc, char * const argv[])
{
	seed_random_generator();
	if (initial_check(argc, argv))
		return 1;

	node = argv[1];

	libubi = libubi_open();
	if (libubi == NULL) {
		failed("libubi_open");
		return 1;
	}

	if (ubi_get_dev_info(libubi, node, &dev_info)) {
		failed("ubi_get_dev_info");
		goto close;
	}

	if (test_update(UBI_DYNAMIC_VOLUME))
		goto close;
	if (test_update(UBI_STATIC_VOLUME))
		goto close;

	libubi_close(libubi);
	return 0;

close:
	libubi_close(libubi);
	return 1;
}