1 #define _LARGEFILE64_SOURCE
2
3 #define LOG_TAG "f2fs_sparseblock"
4
5
6 #include <cutils/log.h>
7 #include <fcntl.h>
8 #include <f2fs_fs.h>
9 #include <linux/types.h>
10 #include <sys/stat.h>
11 #include "f2fs_sparseblock.h"
12
13
14 #define D_DISP_u32(ptr, member) \
15 do { \
16 SLOGD("%-30s" "\t\t[0x%#08x : %u]\n", \
17 #member, le32_to_cpu((ptr)->member), le32_to_cpu((ptr)->member) ); \
18 } while (0);
19
20 #define D_DISP_u64(ptr, member) \
21 do { \
22 SLOGD("%-30s" "\t\t[0x%#016llx : %llu]\n", \
23 #member, le64_to_cpu((ptr)->member), le64_to_cpu((ptr)->member) ); \
24 } while (0);
25
26 #define segno_in_journal(sum, i) (sum->sit_j.entries[i].segno)
27
28 #define sit_in_journal(sum, i) (sum->sit_j.entries[i].se)
29
dbg_print_raw_sb_info(struct f2fs_super_block * sb)30 static void dbg_print_raw_sb_info(struct f2fs_super_block *sb)
31 {
32 SLOGD("\n");
33 SLOGD("+--------------------------------------------------------+\n");
34 SLOGD("| Super block |\n");
35 SLOGD("+--------------------------------------------------------+\n");
36
37 D_DISP_u32(sb, magic);
38 D_DISP_u32(sb, major_ver);
39 D_DISP_u32(sb, minor_ver);
40 D_DISP_u32(sb, log_sectorsize);
41 D_DISP_u32(sb, log_sectors_per_block);
42
43 D_DISP_u32(sb, log_blocksize);
44 D_DISP_u32(sb, log_blocks_per_seg);
45 D_DISP_u32(sb, segs_per_sec);
46 D_DISP_u32(sb, secs_per_zone);
47 D_DISP_u32(sb, checksum_offset);
48 D_DISP_u64(sb, block_count);
49
50 D_DISP_u32(sb, section_count);
51 D_DISP_u32(sb, segment_count);
52 D_DISP_u32(sb, segment_count_ckpt);
53 D_DISP_u32(sb, segment_count_sit);
54 D_DISP_u32(sb, segment_count_nat);
55
56 D_DISP_u32(sb, segment_count_ssa);
57 D_DISP_u32(sb, segment_count_main);
58 D_DISP_u32(sb, segment0_blkaddr);
59
60 D_DISP_u32(sb, cp_blkaddr);
61 D_DISP_u32(sb, sit_blkaddr);
62 D_DISP_u32(sb, nat_blkaddr);
63 D_DISP_u32(sb, ssa_blkaddr);
64 D_DISP_u32(sb, main_blkaddr);
65
66 D_DISP_u32(sb, root_ino);
67 D_DISP_u32(sb, node_ino);
68 D_DISP_u32(sb, meta_ino);
69 D_DISP_u32(sb, cp_payload);
70 SLOGD("\n");
71 }
dbg_print_raw_ckpt_struct(struct f2fs_checkpoint * cp)72 static void dbg_print_raw_ckpt_struct(struct f2fs_checkpoint *cp)
73 {
74 SLOGD("\n");
75 SLOGD("+--------------------------------------------------------+\n");
76 SLOGD("| Checkpoint |\n");
77 SLOGD("+--------------------------------------------------------+\n");
78
79 D_DISP_u64(cp, checkpoint_ver);
80 D_DISP_u64(cp, user_block_count);
81 D_DISP_u64(cp, valid_block_count);
82 D_DISP_u32(cp, rsvd_segment_count);
83 D_DISP_u32(cp, overprov_segment_count);
84 D_DISP_u32(cp, free_segment_count);
85
86 D_DISP_u32(cp, alloc_type[CURSEG_HOT_NODE]);
87 D_DISP_u32(cp, alloc_type[CURSEG_WARM_NODE]);
88 D_DISP_u32(cp, alloc_type[CURSEG_COLD_NODE]);
89 D_DISP_u32(cp, cur_node_segno[0]);
90 D_DISP_u32(cp, cur_node_segno[1]);
91 D_DISP_u32(cp, cur_node_segno[2]);
92
93 D_DISP_u32(cp, cur_node_blkoff[0]);
94 D_DISP_u32(cp, cur_node_blkoff[1]);
95 D_DISP_u32(cp, cur_node_blkoff[2]);
96
97
98 D_DISP_u32(cp, alloc_type[CURSEG_HOT_DATA]);
99 D_DISP_u32(cp, alloc_type[CURSEG_WARM_DATA]);
100 D_DISP_u32(cp, alloc_type[CURSEG_COLD_DATA]);
101 D_DISP_u32(cp, cur_data_segno[0]);
102 D_DISP_u32(cp, cur_data_segno[1]);
103 D_DISP_u32(cp, cur_data_segno[2]);
104
105 D_DISP_u32(cp, cur_data_blkoff[0]);
106 D_DISP_u32(cp, cur_data_blkoff[1]);
107 D_DISP_u32(cp, cur_data_blkoff[2]);
108
109 D_DISP_u32(cp, ckpt_flags);
110 D_DISP_u32(cp, cp_pack_total_block_count);
111 D_DISP_u32(cp, cp_pack_start_sum);
112 D_DISP_u32(cp, valid_node_count);
113 D_DISP_u32(cp, valid_inode_count);
114 D_DISP_u32(cp, next_free_nid);
115 D_DISP_u32(cp, sit_ver_bitmap_bytesize);
116 D_DISP_u32(cp, nat_ver_bitmap_bytesize);
117 D_DISP_u32(cp, checksum_offset);
118 D_DISP_u64(cp, elapsed_time);
119
120 D_DISP_u32(cp, sit_nat_version_bitmap[0]);
121 SLOGD("\n\n");
122 }
123
dbg_print_info_struct(struct f2fs_info * info)124 static void dbg_print_info_struct(struct f2fs_info *info)
125 {
126 SLOGD("\n");
127 SLOGD("+--------------------------------------------------------+\n");
128 SLOGD("| F2FS_INFO |\n");
129 SLOGD("+--------------------------------------------------------+\n");
130 SLOGD("blocks_per_segment: %"PRIu64, info->blocks_per_segment);
131 SLOGD("block_size: %d", info->block_size);
132 SLOGD("sit_bmp loc: %p", info->sit_bmp);
133 SLOGD("sit_bmp_size: %d", info->sit_bmp_size);
134 SLOGD("blocks_per_sit: %"PRIu64, info->blocks_per_sit);
135 SLOGD("sit_blocks loc: %p", info->sit_blocks);
136 SLOGD("sit_sums loc: %p", info->sit_sums);
137 SLOGD("sit_sums num: %d", le16_to_cpu(info->sit_sums->n_sits));
138 unsigned int i;
139 for(i = 0; i < (le16_to_cpu(info->sit_sums->n_sits)); i++) {
140 SLOGD("entry %d in journal entries is for segment %d",i, le32_to_cpu(segno_in_journal(info->sit_sums, i)));
141 }
142
143 SLOGD("cp_blkaddr: %"PRIu64, info->cp_blkaddr);
144 SLOGD("cp_valid_cp_blkaddr: %"PRIu64, info->cp_valid_cp_blkaddr);
145 SLOGD("sit_blkaddr: %"PRIu64, info->sit_blkaddr);
146 SLOGD("nat_blkaddr: %"PRIu64, info->nat_blkaddr);
147 SLOGD("ssa_blkaddr: %"PRIu64, info->ssa_blkaddr);
148 SLOGD("main_blkaddr: %"PRIu64, info->main_blkaddr);
149 SLOGD("total_user_used: %"PRIu64, info->total_user_used);
150 SLOGD("total_blocks: %"PRIu64, info->total_blocks);
151 SLOGD("\n\n");
152 }
153
154
155 /* read blocks */
read_structure(int fd,unsigned long long start,void * buf,ssize_t len)156 static int read_structure(int fd, unsigned long long start, void *buf, ssize_t len)
157 {
158 off64_t ret;
159
160 ret = lseek64(fd, start, SEEK_SET);
161 if (ret < 0) {
162 SLOGE("failed to seek\n");
163 return ret;
164 }
165
166 ret = read(fd, buf, len);
167 if (ret < 0) {
168 SLOGE("failed to read\n");
169 return ret;
170 }
171 if (ret != len) {
172 SLOGE("failed to read all\n");
173 return -1;
174 }
175 return 0;
176 }
177
read_structure_blk(int fd,unsigned long long start_blk,void * buf,size_t len)178 static int read_structure_blk(int fd, unsigned long long start_blk, void *buf, size_t len)
179 {
180 return read_structure(fd, F2FS_BLKSIZE*start_blk, buf, F2FS_BLKSIZE * len);
181 }
182
read_f2fs_sb(int fd,struct f2fs_super_block * sb)183 static int read_f2fs_sb(int fd, struct f2fs_super_block *sb)
184 {
185 int rc;
186 rc = read_structure(fd, F2FS_SUPER_OFFSET, sb, sizeof(*sb));
187 if (le32_to_cpu(sb->magic) != F2FS_SUPER_MAGIC) {
188 SLOGE("Not a valid F2FS super block. Magic:%#08x != %#08x",
189 le32_to_cpu(sb->magic), F2FS_SUPER_MAGIC);
190 return -1;
191 }
192 return 0;
193 }
194
get_f2fs_filesystem_size_sec(char * dev)195 unsigned int get_f2fs_filesystem_size_sec(char *dev)
196 {
197 int fd;
198 if ((fd = open(dev, O_RDONLY)) < 0) {
199 SLOGE("Cannot open device to get filesystem size ");
200 return 0;
201 }
202 struct f2fs_super_block sb;
203 if(read_f2fs_sb(fd, &sb))
204 return 0;
205 return (unsigned int)(le64_to_cpu(sb.block_count)*F2FS_BLKSIZE/DEFAULT_SECTOR_SIZE);
206 }
207
validate_checkpoint(block_t cp_addr,unsigned long long * version,int fd)208 static struct f2fs_checkpoint *validate_checkpoint(block_t cp_addr,
209 unsigned long long *version, int fd)
210 {
211 unsigned char *cp_block_1, *cp_block_2;
212 struct f2fs_checkpoint *cp_block, *cp_ret;
213 u64 cp1_version = 0, cp2_version = 0;
214
215 cp_block_1 = malloc(F2FS_BLKSIZE);
216 if (!cp_block_1)
217 return NULL;
218
219 /* Read the 1st cp block in this CP pack */
220 if (read_structure_blk(fd, cp_addr, cp_block_1, 1))
221 goto invalid_cp1;
222
223 /* get the version number */
224 cp_block = (struct f2fs_checkpoint *)cp_block_1;
225
226 cp1_version = le64_to_cpu(cp_block->checkpoint_ver);
227
228 cp_block_2 = malloc(F2FS_BLKSIZE);
229 if (!cp_block_2) {
230 goto invalid_cp1;
231 }
232 /* Read the 2nd cp block in this CP pack */
233 cp_addr += le32_to_cpu(cp_block->cp_pack_total_block_count) - 1;
234 if (read_structure_blk(fd, cp_addr, cp_block_2, 1)) {
235 goto invalid_cp2;
236 }
237
238 cp_block = (struct f2fs_checkpoint *)cp_block_2;
239
240 cp2_version = le64_to_cpu(cp_block->checkpoint_ver);
241
242 if (cp2_version == cp1_version) {
243 *version = cp2_version;
244 free(cp_block_2);
245 return (struct f2fs_checkpoint *)cp_block_1;
246 }
247
248 /* There must be something wrong with this checkpoint */
249 invalid_cp2:
250 free(cp_block_2);
251 invalid_cp1:
252 free(cp_block_1);
253 return NULL;
254 }
255
get_valid_checkpoint_info(int fd,struct f2fs_super_block * sb,struct f2fs_checkpoint ** cp,struct f2fs_info * info)256 int get_valid_checkpoint_info(int fd, struct f2fs_super_block *sb, struct f2fs_checkpoint **cp, struct f2fs_info *info)
257 {
258 struct f2fs_checkpoint *cp_block;
259
260 struct f2fs_checkpoint *cp1, *cp2, *cur_cp;
261 int cur_cp_no;
262 unsigned long blk_size;// = 1<<le32_to_cpu(info->sb->log_blocksize);
263 unsigned long long cp1_version = 0, cp2_version = 0;
264 unsigned long long cp1_start_blk_no;
265 unsigned long long cp2_start_blk_no;
266 u32 bmp_size;
267
268 blk_size = 1U<<le32_to_cpu(sb->log_blocksize);
269
270 /*
271 * Find valid cp by reading both packs and finding most recent one.
272 */
273 cp1_start_blk_no = le32_to_cpu(sb->cp_blkaddr);
274 cp1 = validate_checkpoint(cp1_start_blk_no, &cp1_version, fd);
275
276 /* The second checkpoint pack should start at the next segment */
277 cp2_start_blk_no = cp1_start_blk_no + (1 << le32_to_cpu(sb->log_blocks_per_seg));
278 cp2 = validate_checkpoint(cp2_start_blk_no, &cp2_version, fd);
279
280 if (cp1 && cp2) {
281 if (ver_after(cp2_version, cp1_version)) {
282 cur_cp = cp2;
283 info->cp_valid_cp_blkaddr = cp2_start_blk_no;
284 free(cp1);
285 } else {
286 cur_cp = cp1;
287 info->cp_valid_cp_blkaddr = cp1_start_blk_no;
288 free(cp2);
289 }
290 } else if (cp1) {
291 cur_cp = cp1;
292 info->cp_valid_cp_blkaddr = cp1_start_blk_no;
293 } else if (cp2) {
294 cur_cp = cp2;
295 info->cp_valid_cp_blkaddr = cp2_start_blk_no;
296 } else {
297 goto fail_no_cp;
298 }
299
300 *cp = cur_cp;
301
302 return 0;
303
304 fail_no_cp:
305 SLOGE("Valid Checkpoint not found!!");
306 return -EINVAL;
307 }
308
gather_sit_info(int fd,struct f2fs_info * info)309 static int gather_sit_info(int fd, struct f2fs_info *info)
310 {
311 u64 num_segments = (info->total_blocks - info->main_blkaddr
312 + info->blocks_per_segment - 1) / info->blocks_per_segment;
313 u64 num_sit_blocks = (num_segments + SIT_ENTRY_PER_BLOCK - 1) / SIT_ENTRY_PER_BLOCK;
314 u64 sit_block;
315
316 info->sit_blocks = malloc(num_sit_blocks * sizeof(struct f2fs_sit_block));
317 if (!info->sit_blocks)
318 return -1;
319
320 for(sit_block = 0; sit_block<num_sit_blocks; sit_block++) {
321 off64_t address = info->sit_blkaddr + sit_block;
322
323 if (f2fs_test_bit(sit_block, info->sit_bmp))
324 address += info->blocks_per_sit;
325
326 SLOGD("Reading cache block starting at block %"PRIu64, address);
327 if (read_structure(fd, address * F2FS_BLKSIZE, &info->sit_blocks[sit_block], sizeof(struct f2fs_sit_block))) {
328 SLOGE("Could not read sit block at block %"PRIu64, address);
329 free(info->sit_blocks);
330 return -1;
331 }
332 }
333 return 0;
334 }
335
is_set_ckpt_flags(struct f2fs_checkpoint * cp,unsigned int f)336 static inline int is_set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
337 {
338 unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags);
339 return !!(ckpt_flags & f);
340 }
341
sum_blk_addr(struct f2fs_checkpoint * cp,struct f2fs_info * info,int base,int type)342 static inline u64 sum_blk_addr(struct f2fs_checkpoint *cp, struct f2fs_info *info, int base, int type)
343 {
344 return info->cp_valid_cp_blkaddr + le32_to_cpu(cp->cp_pack_total_block_count)
345 - (base + 1) + type;
346 }
347
get_sit_summary(int fd,struct f2fs_info * info,struct f2fs_checkpoint * cp)348 static int get_sit_summary(int fd, struct f2fs_info *info, struct f2fs_checkpoint *cp)
349 {
350 char buffer[F2FS_BLKSIZE];
351
352 info->sit_sums = calloc(1, sizeof(struct f2fs_summary_block));
353 if (!info->sit_sums)
354 return -1;
355
356 /* CURSEG_COLD_DATA where the journaled SIT entries are. */
357 if (is_set_ckpt_flags(cp, CP_COMPACT_SUM_FLAG)) {
358 if (read_structure_blk(fd, info->cp_valid_cp_blkaddr + le32_to_cpu(cp->cp_pack_start_sum), buffer, 1))
359 return -1;
360 memcpy(&info->sit_sums->n_sits, &buffer[SUM_JOURNAL_SIZE], SUM_JOURNAL_SIZE);
361 } else {
362 u64 blk_addr;
363 if (is_set_ckpt_flags(cp, CP_UMOUNT_FLAG))
364 blk_addr = sum_blk_addr(cp, info, NR_CURSEG_TYPE, CURSEG_COLD_DATA);
365 else
366 blk_addr = sum_blk_addr(cp, info, NR_CURSEG_DATA_TYPE, CURSEG_COLD_DATA);
367
368 if (read_structure_blk(fd, blk_addr, buffer, 1))
369 return -1;
370
371 memcpy(info->sit_sums, buffer, sizeof(struct f2fs_summary_block));
372 }
373 return 0;
374 }
375
generate_f2fs_info(int fd)376 struct f2fs_info *generate_f2fs_info(int fd)
377 {
378 struct f2fs_super_block *sb = NULL;
379 struct f2fs_checkpoint *cp = NULL;
380 struct f2fs_info *info;
381
382 info = calloc(1, sizeof(*info));
383 if (!info) {
384 SLOGE("Out of memory!");
385 return NULL;
386 }
387
388 sb = malloc(sizeof(*sb));
389 if(!sb) {
390 SLOGE("Out of memory!");
391 free(info);
392 return NULL;
393 }
394 if (read_f2fs_sb(fd, sb)) {
395 SLOGE("Failed to read superblock");
396 free(info);
397 free(sb);
398 return NULL;
399 }
400 dbg_print_raw_sb_info(sb);
401
402 info->cp_blkaddr = le32_to_cpu(sb->cp_blkaddr);
403 info->sit_blkaddr = le32_to_cpu(sb->sit_blkaddr);
404 info->nat_blkaddr = le32_to_cpu(sb->nat_blkaddr);
405 info->ssa_blkaddr = le32_to_cpu(sb->ssa_blkaddr);
406 info->main_blkaddr = le32_to_cpu(sb->main_blkaddr);
407 info->block_size = F2FS_BLKSIZE;
408 info->total_blocks = sb->block_count;
409 info->blocks_per_sit = (le32_to_cpu(sb->segment_count_sit) >> 1) << le32_to_cpu(sb->log_blocks_per_seg);
410 info->blocks_per_segment = 1U << le32_to_cpu(sb->log_blocks_per_seg);
411
412 if (get_valid_checkpoint_info(fd, sb, &cp, info))
413 goto error;
414 dbg_print_raw_ckpt_struct(cp);
415
416 info->total_user_used = le32_to_cpu(cp->valid_block_count);
417
418 u32 bmp_size = le32_to_cpu(cp->sit_ver_bitmap_bytesize);
419
420 /* get sit validity bitmap */
421 info->sit_bmp = malloc(bmp_size);
422 if(!info->sit_bmp) {
423 SLOGE("Out of memory!");
424 goto error;
425 }
426
427 info->sit_bmp_size = bmp_size;
428 if (read_structure(fd, info->cp_valid_cp_blkaddr * F2FS_BLKSIZE
429 + offsetof(struct f2fs_checkpoint, sit_nat_version_bitmap),
430 info->sit_bmp, bmp_size)) {
431 SLOGE("Error getting SIT validity bitmap");
432 goto error;
433 }
434
435 if (gather_sit_info(fd , info)) {
436 SLOGE("Error getting SIT information");
437 goto error;
438 }
439 if (get_sit_summary(fd, info, cp)) {
440 SLOGE("Error getting SIT entries in summary area");
441 goto error;
442 }
443 dbg_print_info_struct(info);
444 return info;
445 error:
446 free(sb);
447 free(cp);
448 free_f2fs_info(info);
449 return NULL;
450 }
451
free_f2fs_info(struct f2fs_info * info)452 void free_f2fs_info(struct f2fs_info *info)
453 {
454 if (info) {
455 free(info->sit_blocks);
456 info->sit_blocks = NULL;
457
458 free(info->sit_bmp);
459 info->sit_bmp = NULL;
460
461 free(info->sit_sums);
462 info->sit_sums = NULL;
463 }
464 free(info);
465 }
466
get_num_blocks_used(struct f2fs_info * info)467 u64 get_num_blocks_used(struct f2fs_info *info)
468 {
469 return info->main_blkaddr + info->total_user_used;
470 }
471
f2fs_test_bit(unsigned int nr,const char * p)472 int f2fs_test_bit(unsigned int nr, const char *p)
473 {
474 int mask;
475 char *addr = (char *)p;
476
477 addr += (nr >> 3);
478 mask = 1 << (7 - (nr & 0x07));
479 return (mask & *addr) != 0;
480 }
481
run_on_used_blocks(u64 startblock,struct f2fs_info * info,int (* func)(u64 pos,void * data),void * data)482 int run_on_used_blocks(u64 startblock, struct f2fs_info *info, int (*func)(u64 pos, void *data), void *data) {
483 struct f2fs_sit_block sit_block_cache;
484 struct f2fs_sit_entry * sit_entry;
485 u64 sit_block_num_cur = 0, segnum = 0, block_offset;
486 u64 block;
487 unsigned int used, found, started = 0, i;
488
489 for (block=startblock; block<info->total_blocks; block++) {
490 /* TODO: Save only relevant portions of metadata */
491 if (block < info->main_blkaddr) {
492 if (func(block, data)) {
493 SLOGI("func error");
494 return -1;
495 }
496 } else {
497 /* Main Section */
498 segnum = (block - info->main_blkaddr)/info->blocks_per_segment;
499
500 /* check the SIT entries in the journal */
501 found = 0;
502 for(i = 0; i < le16_to_cpu(info->sit_sums->n_sits); i++) {
503 if (le32_to_cpu(segno_in_journal(info->sit_sums, i)) == segnum) {
504 sit_entry = &sit_in_journal(info->sit_sums, i);
505 found = 1;
506 break;
507 }
508 }
509
510 /* get SIT entry from SIT section */
511 if (!found) {
512 sit_block_num_cur = segnum/SIT_ENTRY_PER_BLOCK;
513 sit_entry = &info->sit_blocks[sit_block_num_cur].entries[segnum % SIT_ENTRY_PER_BLOCK];
514 }
515
516 block_offset = (block - info->main_blkaddr) % info->blocks_per_segment;
517
518 used = f2fs_test_bit(block_offset, (char *)sit_entry->valid_map);
519 if(used)
520 if (func(block, data))
521 return -1;
522 }
523 }
524 return 0;
525 }
526
527 struct privdata
528 {
529 int count;
530 int infd;
531 int outfd;
532 char* buf;
533 char *zbuf;
534 int done;
535 struct f2fs_info *info;
536 };
537
538
539 /*
540 * This is a simple test program. It performs a block to block copy of a
541 * filesystem, replacing blocks identified as unused with 0's.
542 */
543
copy_used(u64 pos,void * data)544 int copy_used(u64 pos, void *data)
545 {
546 struct privdata *d = data;
547 char *buf;
548 int pdone = (pos*100)/d->info->total_blocks;
549 if (pdone > d->done) {
550 d->done = pdone;
551 printf("Done with %d percent\n", d->done);
552 }
553
554 d->count++;
555 buf = d->buf;
556 if(read_structure_blk(d->infd, (unsigned long long)pos, d->buf, 1)) {
557 printf("Error reading!!!\n");
558 return -1;
559 }
560
561 off64_t ret;
562 ret = lseek64(d->outfd, pos*F2FS_BLKSIZE, SEEK_SET);
563 if (ret < 0) {
564 SLOGE("failed to seek\n");
565 return ret;
566 }
567
568 ret = write(d->outfd, d->buf, F2FS_BLKSIZE);
569 if (ret < 0) {
570 SLOGE("failed to write\n");
571 return ret;
572 }
573 if (ret != F2FS_BLKSIZE) {
574 SLOGE("failed to read all\n");
575 return -1;
576 }
577 return 0;
578 }
579
main(int argc,char ** argv)580 int main(int argc, char **argv)
581 {
582 if (argc != 3)
583 printf("Usage: %s fs_file_in fs_file_out\n", argv[0]);
584 char *in = argv[1];
585 char *out = argv[2];
586 int infd, outfd;
587
588 if ((infd = open(in, O_RDONLY)) < 0) {
589 SLOGE("Cannot open device");
590 return 0;
591 }
592 if ((outfd = open(out, O_WRONLY|O_CREAT, S_IRUSR | S_IWUSR)) < 0) {
593 SLOGE("Cannot open output");
594 return 0;
595 }
596
597 struct privdata d;
598 d.infd = infd;
599 d.outfd = outfd;
600 d.count = 0;
601 struct f2fs_info *info = generate_f2fs_info(infd);
602 if (!info) {
603 printf("Failed to generate info!");
604 return -1;
605 }
606 char *buf = malloc(F2FS_BLKSIZE);
607 char *zbuf = calloc(1, F2FS_BLKSIZE);
608 d.buf = buf;
609 d.zbuf = zbuf;
610 d.done = 0;
611 d.info = info;
612 int expected_count = get_num_blocks_used(info);
613 run_on_used_blocks(0, info, ©_used, &d);
614 printf("Copied %d blocks. Expected to copy %d\n", d.count, expected_count);
615 ftruncate64(outfd, info->total_blocks * F2FS_BLKSIZE);
616 free_f2fs_info(info);
617 free(buf);
618 free(zbuf);
619 close(infd);
620 close(outfd);
621 return 0;
622 }
623