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btrfs-progs: fsck: understand the -s option
[btrfs-progs-unstable/devel.git] / mkfs.c
blob394a62285ce14fc5981280a89c8a21e605801a7e
1 /*
2 * Copyright (C) 2007 Oracle. All rights reserved.
3 *
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public
6 * License v2 as published by the Free Software Foundation.
7 *
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
11 * General Public License for more details.
12 *
13 * You should have received a copy of the GNU General Public
14 * License along with this program; if not, write to the
15 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
16 * Boston, MA 021110-1307, USA.
17 */
18
19 #define _XOPEN_SOURCE 500
20 #define _GNU_SOURCE
21
22 #ifndef __CHECKER__
23 #include <sys/ioctl.h>
24 #include <sys/mount.h>
25 #include "ioctl.h"
26 #endif
27
28 #include <stdio.h>
29 #include <stdlib.h>
30 #include <sys/types.h>
31 #include <sys/stat.h>
32 #include <sys/dir.h>
33 #include <fcntl.h>
34 #include <unistd.h>
35 #include <getopt.h>
36 #include <uuid/uuid.h>
37 #include <linux/fs.h>
38 #include <ctype.h>
39 #include <attr/xattr.h>
40 #include "kerncompat.h"
41 #include "ctree.h"
42 #include "disk-io.h"
43 #include "volumes.h"
44 #include "transaction.h"
45 #include "utils.h"
46 #include "version.h"
47
48 static u64 index_cnt = 2;
49
50 struct directory_name_entry {
51 char *dir_name;
52 char *path;
53 ino_t inum;
54 struct list_head list;
55 };
56
57 static u64 parse_size(char *s)
58 {
59 int len = strlen(s);
60 char c;
61 u64 mult = 1;
62 u64 ret;
63
64 s = strdup(s);
65
66 if (len && !isdigit(s[len - 1])) {
67 c = tolower(s[len - 1]);
68 switch (c) {
69 case 'g':
70 mult *= 1024;
71 case 'm':
72 mult *= 1024;
73 case 'k':
74 mult *= 1024;
75 case 'b':
76 break;
77 default:
78 fprintf(stderr, "Unknown size descriptor %c\n", c);
79 exit(1);
80 }
81 s[len - 1] = '\0';
82 }
83 ret = atol(s) * mult;
84 free(s);
85 return ret;
86 }
87
88 static int make_root_dir(struct btrfs_root *root, int mixed)
89 {
90 struct btrfs_trans_handle *trans;
91 struct btrfs_key location;
92 u64 bytes_used;
93 u64 chunk_start = 0;
94 u64 chunk_size = 0;
95 int ret;
96
97 trans = btrfs_start_transaction(root, 1);
98 bytes_used = btrfs_super_bytes_used(&root->fs_info->super_copy);
99
100 root->fs_info->system_allocs = 1;
101 ret = btrfs_make_block_group(trans, root, bytes_used,
102 BTRFS_BLOCK_GROUP_SYSTEM,
103 BTRFS_FIRST_CHUNK_TREE_OBJECTID,
104 0, BTRFS_MKFS_SYSTEM_GROUP_SIZE);
105 BUG_ON(ret);
106
107 if (mixed) {
108 ret = btrfs_alloc_chunk(trans, root->fs_info->extent_root,
109 &chunk_start, &chunk_size,
110 BTRFS_BLOCK_GROUP_METADATA |
111 BTRFS_BLOCK_GROUP_DATA);
112 BUG_ON(ret);
113 ret = btrfs_make_block_group(trans, root, 0,
114 BTRFS_BLOCK_GROUP_METADATA |
115 BTRFS_BLOCK_GROUP_DATA,
116 BTRFS_FIRST_CHUNK_TREE_OBJECTID,
117 chunk_start, chunk_size);
118 BUG_ON(ret);
119 printf("Created a data/metadata chunk of size %llu\n", chunk_size);
120 } else {
121 ret = btrfs_alloc_chunk(trans, root->fs_info->extent_root,
122 &chunk_start, &chunk_size,
123 BTRFS_BLOCK_GROUP_METADATA);
124 BUG_ON(ret);
125 ret = btrfs_make_block_group(trans, root, 0,
126 BTRFS_BLOCK_GROUP_METADATA,
127 BTRFS_FIRST_CHUNK_TREE_OBJECTID,
128 chunk_start, chunk_size);
129 BUG_ON(ret);
130 }
131
132 root->fs_info->system_allocs = 0;
133 btrfs_commit_transaction(trans, root);
134 trans = btrfs_start_transaction(root, 1);
135 BUG_ON(!trans);
136
137 if (!mixed) {
138 ret = btrfs_alloc_chunk(trans, root->fs_info->extent_root,
139 &chunk_start, &chunk_size,
140 BTRFS_BLOCK_GROUP_DATA);
141 BUG_ON(ret);
142 ret = btrfs_make_block_group(trans, root, 0,
143 BTRFS_BLOCK_GROUP_DATA,
144 BTRFS_FIRST_CHUNK_TREE_OBJECTID,
145 chunk_start, chunk_size);
146 BUG_ON(ret);
147 }
148
149 ret = btrfs_make_root_dir(trans, root->fs_info->tree_root,
150 BTRFS_ROOT_TREE_DIR_OBJECTID);
151 if (ret)
152 goto err;
153 ret = btrfs_make_root_dir(trans, root, BTRFS_FIRST_FREE_OBJECTID);
154 if (ret)
155 goto err;
156 memcpy(&location, &root->fs_info->fs_root->root_key, sizeof(location));
157 location.offset = (u64)-1;
158 ret = btrfs_insert_dir_item(trans, root->fs_info->tree_root,
159 "default", 7,
160 btrfs_super_root_dir(&root->fs_info->super_copy),
161 &location, BTRFS_FT_DIR, 0);
162 if (ret)
163 goto err;
164
165 ret = btrfs_insert_inode_ref(trans, root->fs_info->tree_root,
166 "default", 7, location.objectid,
167 BTRFS_ROOT_TREE_DIR_OBJECTID, 0);
168 if (ret)
169 goto err;
170
171 btrfs_commit_transaction(trans, root);
172 err:
173 return ret;
174 }
175
176 static int recow_roots(struct btrfs_trans_handle *trans,
177 struct btrfs_root *root)
178 {
179 int ret;
180 struct extent_buffer *tmp;
181 struct btrfs_fs_info *info = root->fs_info;
182
183 ret = __btrfs_cow_block(trans, info->fs_root, info->fs_root->node,
184 NULL, 0, &tmp, 0, 0);
185 BUG_ON(ret);
186 free_extent_buffer(tmp);
187
188 ret = __btrfs_cow_block(trans, info->tree_root, info->tree_root->node,
189 NULL, 0, &tmp, 0, 0);
190 BUG_ON(ret);
191 free_extent_buffer(tmp);
192
193 ret = __btrfs_cow_block(trans, info->extent_root,
194 info->extent_root->node, NULL, 0, &tmp, 0, 0);
195 BUG_ON(ret);
196 free_extent_buffer(tmp);
197
198 ret = __btrfs_cow_block(trans, info->chunk_root, info->chunk_root->node,
199 NULL, 0, &tmp, 0, 0);
200 BUG_ON(ret);
201 free_extent_buffer(tmp);
202
203
204 ret = __btrfs_cow_block(trans, info->dev_root, info->dev_root->node,
205 NULL, 0, &tmp, 0, 0);
206 BUG_ON(ret);
207 free_extent_buffer(tmp);
208
209 ret = __btrfs_cow_block(trans, info->csum_root, info->csum_root->node,
210 NULL, 0, &tmp, 0, 0);
211 BUG_ON(ret);
212 free_extent_buffer(tmp);
213
214 return 0;
215 }
216
217 static int create_one_raid_group(struct btrfs_trans_handle *trans,
218 struct btrfs_root *root, u64 type)
219 {
220 u64 chunk_start;
221 u64 chunk_size;
222 int ret;
223
224 ret = btrfs_alloc_chunk(trans, root->fs_info->extent_root,
225 &chunk_start, &chunk_size, type);
226 BUG_ON(ret);
227 ret = btrfs_make_block_group(trans, root->fs_info->extent_root, 0,
228 type, BTRFS_FIRST_CHUNK_TREE_OBJECTID,
229 chunk_start, chunk_size);
230 BUG_ON(ret);
231 return ret;
232 }
233
234 static int create_raid_groups(struct btrfs_trans_handle *trans,
235 struct btrfs_root *root, u64 data_profile,
236 int data_profile_opt, u64 metadata_profile,
237 int metadata_profile_opt, int mixed)
238 {
239 u64 num_devices = btrfs_super_num_devices(&root->fs_info->super_copy);
240 u64 allowed;
241 int ret;
242
243 /*
244 * Set default profiles according to number of added devices.
245 * For mixed groups defaults are single/single.
246 */
247 if (!metadata_profile_opt && !mixed) {
248 metadata_profile = (num_devices > 1) ?
249 BTRFS_BLOCK_GROUP_RAID1 : BTRFS_BLOCK_GROUP_DUP;
250 }
251 if (!data_profile_opt && !mixed) {
252 data_profile = (num_devices > 1) ?
253 BTRFS_BLOCK_GROUP_RAID0 : 0; /* raid0 or single */
254 }
255
256 if (num_devices == 1)
257 allowed = BTRFS_BLOCK_GROUP_DUP;
258 else if (num_devices >= 4) {
259 allowed = BTRFS_BLOCK_GROUP_RAID0 | BTRFS_BLOCK_GROUP_RAID1 |
260 BTRFS_BLOCK_GROUP_RAID10;
261 } else
262 allowed = BTRFS_BLOCK_GROUP_RAID0 | BTRFS_BLOCK_GROUP_RAID1;
263
264 if (metadata_profile & ~allowed) {
265 fprintf(stderr, "unable to create FS with metadata "
266 "profile %llu (have %llu devices)\n", metadata_profile,
267 num_devices);
268 exit(1);
269 }
270 if (data_profile & ~allowed) {
271 fprintf(stderr, "unable to create FS with data "
272 "profile %llu (have %llu devices)\n", data_profile,
273 num_devices);
274 exit(1);
275 }
276
277 /* allow dup'ed data chunks only in mixed mode */
278 if (!mixed && (data_profile & BTRFS_BLOCK_GROUP_DUP)) {
279 fprintf(stderr, "dup for data is allowed only in mixed mode\n");
280 exit(1);
281 }
282
283 if (allowed & metadata_profile) {
284 u64 meta_flags = BTRFS_BLOCK_GROUP_METADATA;
285
286 ret = create_one_raid_group(trans, root,
287 BTRFS_BLOCK_GROUP_SYSTEM |
288 (allowed & metadata_profile));
289 BUG_ON(ret);
290
291 if (mixed)
292 meta_flags |= BTRFS_BLOCK_GROUP_DATA;
293
294 ret = create_one_raid_group(trans, root, meta_flags |
295 (allowed & metadata_profile));
296 BUG_ON(ret);
297
298 ret = recow_roots(trans, root);
299 BUG_ON(ret);
300 }
301 if (!mixed && num_devices > 1 && (allowed & data_profile)) {
302 ret = create_one_raid_group(trans, root,
303 BTRFS_BLOCK_GROUP_DATA |
304 (allowed & data_profile));
305 BUG_ON(ret);
306 }
307 return 0;
308 }
309
310 static int create_data_reloc_tree(struct btrfs_trans_handle *trans,
311 struct btrfs_root *root)
312 {
313 struct btrfs_key location;
314 struct btrfs_root_item root_item;
315 struct extent_buffer *tmp;
316 u64 objectid = BTRFS_DATA_RELOC_TREE_OBJECTID;
317 int ret;
318
319 ret = btrfs_copy_root(trans, root, root->node, &tmp, objectid);
320 BUG_ON(ret);
321
322 memcpy(&root_item, &root->root_item, sizeof(root_item));
323 btrfs_set_root_bytenr(&root_item, tmp->start);
324 btrfs_set_root_level(&root_item, btrfs_header_level(tmp));
325 btrfs_set_root_generation(&root_item, trans->transid);
326 free_extent_buffer(tmp);
327
328 location.objectid = objectid;
329 location.type = BTRFS_ROOT_ITEM_KEY;
330 location.offset = 0;
331 ret = btrfs_insert_root(trans, root->fs_info->tree_root,
332 &location, &root_item);
333 BUG_ON(ret);
334 return 0;
335 }
336
337 static void print_usage(void)
338 {
339 fprintf(stderr, "usage: mkfs.btrfs [options] dev [ dev ... ]\n");
340 fprintf(stderr, "options:\n");
341 fprintf(stderr, "\t -A --alloc-start the offset to start the FS\n");
342 fprintf(stderr, "\t -b --byte-count total number of bytes in the FS\n");
343 fprintf(stderr, "\t -d --data data profile, raid0, raid1, raid10, dup or single\n");
344 fprintf(stderr, "\t -l --leafsize size of btree leaves\n");
345 fprintf(stderr, "\t -L --label set a label\n");
346 fprintf(stderr, "\t -m --metadata metadata profile, values like data profile\n");
347 fprintf(stderr, "\t -M --mixed mix metadata and data together\n");
348 fprintf(stderr, "\t -n --nodesize size of btree nodes\n");
349 fprintf(stderr, "\t -s --sectorsize min block allocation\n");
350 fprintf(stderr, "\t -r --rootdir the source directory\n");
351 fprintf(stderr, "\t -K --nodiscard do not perform whole device TRIM\n");
352 fprintf(stderr, "%s\n", BTRFS_BUILD_VERSION);
353 exit(1);
354 }
355
356 static void print_version(void)
357 {
358 fprintf(stderr, "mkfs.btrfs, part of %s\n", BTRFS_BUILD_VERSION);
359 exit(0);
360 }
361
362 static u64 parse_profile(char *s)
363 {
364 if (strcmp(s, "raid0") == 0) {
365 return BTRFS_BLOCK_GROUP_RAID0;
366 } else if (strcmp(s, "raid1") == 0) {
367 return BTRFS_BLOCK_GROUP_RAID1;
368 } else if (strcmp(s, "raid10") == 0) {
369 return BTRFS_BLOCK_GROUP_RAID10;
370 } else if (strcmp(s, "dup") == 0) {
371 return BTRFS_BLOCK_GROUP_DUP;
372 } else if (strcmp(s, "single") == 0) {
373 return 0;
374 } else {
375 fprintf(stderr, "Unknown profile %s\n", s);
376 print_usage();
377 }
378 /* not reached */
379 return 0;
380 }
381
382 static char *parse_label(char *input)
383 {
384 int i;
385 int len = strlen(input);
386
387 if (len >= BTRFS_LABEL_SIZE) {
388 fprintf(stderr, "Label %s is too long (max %d)\n", input,
389 BTRFS_LABEL_SIZE - 1);
390 exit(1);
391 }
392 for (i = 0; i < len; i++) {
393 if (input[i] == '/' || input[i] == '\\') {
394 fprintf(stderr, "invalid label %s\n", input);
395 exit(1);
396 }
397 }
398 return strdup(input);
399 }
400
401 static struct option long_options[] = {
402 { "alloc-start", 1, NULL, 'A'},
403 { "byte-count", 1, NULL, 'b' },
404 { "leafsize", 1, NULL, 'l' },
405 { "label", 1, NULL, 'L'},
406 { "metadata", 1, NULL, 'm' },
407 { "mixed", 0, NULL, 'M' },
408 { "nodesize", 1, NULL, 'n' },
409 { "sectorsize", 1, NULL, 's' },
410 { "data", 1, NULL, 'd' },
411 { "version", 0, NULL, 'V' },
412 { "rootdir", 1, NULL, 'r' },
413 { "nodiscard", 0, NULL, 'K' },
414 { 0, 0, 0, 0}
415 };
416
417 static int add_directory_items(struct btrfs_trans_handle *trans,
418 struct btrfs_root *root, u64 objectid,
419 ino_t parent_inum, const char *name,
420 struct stat *st, int *dir_index_cnt)
421 {
422 int ret;
423 int name_len;
424 struct btrfs_key location;
425 u8 filetype = 0;
426
427 name_len = strlen(name);
428
429 location.objectid = objectid;
430 location.offset = 0;
431 btrfs_set_key_type(&location, BTRFS_INODE_ITEM_KEY);
432
433 if (S_ISDIR(st->st_mode))
434 filetype = BTRFS_FT_DIR;
435 if (S_ISREG(st->st_mode))
436 filetype = BTRFS_FT_REG_FILE;
437 if (S_ISLNK(st->st_mode))
438 filetype = BTRFS_FT_SYMLINK;
439
440 ret = btrfs_insert_dir_item(trans, root, name, name_len,
441 parent_inum, &location,
442 filetype, index_cnt);
443
444 *dir_index_cnt = index_cnt;
445 index_cnt++;
446
447 return ret;
448 }
449
450 static int fill_inode_item(struct btrfs_trans_handle *trans,
451 struct btrfs_root *root,
452 struct btrfs_inode_item *dst, struct stat *src)
453 {
454 u64 blocks = 0;
455 u64 sectorsize = root->sectorsize;
456
457 /*
458 * btrfs_inode_item has some reserved fields
459 * and represents on-disk inode entry, so
460 * zero everything to prevent information leak
461 */
462 memset(dst, 0, sizeof (*dst));
463
464 btrfs_set_stack_inode_generation(dst, trans->transid);
465 btrfs_set_stack_inode_size(dst, src->st_size);
466 btrfs_set_stack_inode_nbytes(dst, 0);
467 btrfs_set_stack_inode_block_group(dst, 0);
468 btrfs_set_stack_inode_nlink(dst, src->st_nlink);
469 btrfs_set_stack_inode_uid(dst, src->st_uid);
470 btrfs_set_stack_inode_gid(dst, src->st_gid);
471 btrfs_set_stack_inode_mode(dst, src->st_mode);
472 btrfs_set_stack_inode_rdev(dst, 0);
473 btrfs_set_stack_inode_flags(dst, 0);
474 btrfs_set_stack_timespec_sec(&dst->atime, src->st_atime);
475 btrfs_set_stack_timespec_nsec(&dst->atime, 0);
476 btrfs_set_stack_timespec_sec(&dst->ctime, src->st_ctime);
477 btrfs_set_stack_timespec_nsec(&dst->ctime, 0);
478 btrfs_set_stack_timespec_sec(&dst->mtime, src->st_mtime);
479 btrfs_set_stack_timespec_nsec(&dst->mtime, 0);
480 btrfs_set_stack_timespec_sec(&dst->otime, 0);
481 btrfs_set_stack_timespec_nsec(&dst->otime, 0);
482
483 if (S_ISDIR(src->st_mode)) {
484 btrfs_set_stack_inode_size(dst, 0);
485 btrfs_set_stack_inode_nlink(dst, 1);
486 }
487 if (S_ISREG(src->st_mode)) {
488 btrfs_set_stack_inode_size(dst, (u64)src->st_size);
489 if (src->st_size <= BTRFS_MAX_INLINE_DATA_SIZE(root))
490 btrfs_set_stack_inode_nbytes(dst, src->st_size);
491 else {
492 blocks = src->st_size / sectorsize;
493 if (src->st_size % sectorsize)
494 blocks += 1;
495 blocks *= sectorsize;
496 btrfs_set_stack_inode_nbytes(dst, blocks);
497 }
498 }
499 if (S_ISLNK(src->st_mode))
500 btrfs_set_stack_inode_nbytes(dst, src->st_size + 1);
501
502 return 0;
503 }
504
505 static int directory_select(const struct direct *entry)
506 {
507 if ((strncmp(entry->d_name, ".", entry->d_reclen) == 0) ||
508 (strncmp(entry->d_name, "..", entry->d_reclen) == 0))
509 return 0;
510 else
511 return 1;
512 }
513
514 static void free_namelist(struct direct **files, int count)
515 {
516 int i;
517
518 if (count < 0)
519 return;
520
521 for (i = 0; i < count; ++i)
522 free(files[i]);
523 free(files);
524 }
525
526 static u64 calculate_dir_inode_size(char *dirname)
527 {
528 int count, i;
529 struct direct **files, *cur_file;
530 u64 dir_inode_size = 0;
531
532 count = scandir(dirname, &files, directory_select, NULL);
533
534 for (i = 0; i < count; i++) {
535 cur_file = files[i];
536 dir_inode_size += strlen(cur_file->d_name);
537 }
538
539 free_namelist(files, count);
540
541 dir_inode_size *= 2;
542 return dir_inode_size;
543 }
544
545 static int add_inode_items(struct btrfs_trans_handle *trans,
546 struct btrfs_root *root,
547 struct stat *st, char *name,
548 u64 self_objectid, ino_t parent_inum,
549 int dir_index_cnt, struct btrfs_inode_item *inode_ret)
550 {
551 int ret;
552 struct btrfs_key inode_key;
553 struct btrfs_inode_item btrfs_inode;
554 u64 objectid;
555 u64 inode_size = 0;
556 int name_len;
557
558 name_len = strlen(name);
559 fill_inode_item(trans, root, &btrfs_inode, st);
560 objectid = self_objectid;
561
562 if (S_ISDIR(st->st_mode)) {
563 inode_size = calculate_dir_inode_size(name);
564 btrfs_set_stack_inode_size(&btrfs_inode, inode_size);
565 }
566
567 inode_key.objectid = objectid;
568 inode_key.offset = 0;
569 btrfs_set_key_type(&inode_key, BTRFS_INODE_ITEM_KEY);
570
571 ret = btrfs_insert_inode(trans, root, objectid, &btrfs_inode);
572 if (ret)
573 goto fail;
574
575 ret = btrfs_insert_inode_ref(trans, root, name, name_len,
576 objectid, parent_inum, dir_index_cnt);
577 if (ret)
578 goto fail;
579
580 *inode_ret = btrfs_inode;
581 fail:
582 return ret;
583 }
584
585 static int add_xattr_item(struct btrfs_trans_handle *trans,
586 struct btrfs_root *root, u64 objectid,
587 const char *file_name)
588 {
589 int ret;
590 int cur_name_len;
591 char xattr_list[XATTR_LIST_MAX];
592 char *cur_name;
593 char cur_value[XATTR_SIZE_MAX];
594 char delimiter = '\0';
595 char *next_location = xattr_list;
596
597 ret = llistxattr(file_name, xattr_list, XATTR_LIST_MAX);
598 if (ret < 0) {
599 if(errno == ENOTSUP)
600 return 0;
601 fprintf(stderr, "get a list of xattr failed for %s\n",
602 file_name);
603 return ret;
604 }
605 if (ret == 0)
606 return ret;
607
608 cur_name = strtok(xattr_list, &delimiter);
609 while (cur_name != NULL) {
610 cur_name_len = strlen(cur_name);
611 next_location += cur_name_len + 1;
612
613 ret = getxattr(file_name, cur_name, cur_value, XATTR_SIZE_MAX);
614 if (ret < 0) {
615 if(errno == ENOTSUP)
616 return 0;
617 fprintf(stderr, "get a xattr value failed for %s attr %s\n",
618 file_name, cur_name);
619 return ret;
620 }
621
622 ret = btrfs_insert_xattr_item(trans, root, cur_name,
623 cur_name_len, cur_value,
624 ret, objectid);
625 if (ret) {
626 fprintf(stderr, "insert a xattr item failed for %s\n",
627 file_name);
628 }
629
630 cur_name = strtok(next_location, &delimiter);
631 }
632
633 return ret;
634 }
635 static int custom_alloc_extent(struct btrfs_root *root, u64 num_bytes,
636 u64 hint_byte, struct btrfs_key *ins)
637 {
638 u64 start;
639 u64 end;
640 u64 last = hint_byte;
641 int ret;
642 int wrapped = 0;
643 struct btrfs_block_group_cache *cache;
644
645 while (1) {
646 ret = find_first_extent_bit(&root->fs_info->free_space_cache,
647 last, &start, &end, EXTENT_DIRTY);
648 if (ret) {
649 if (wrapped++ == 0) {
650 last = 0;
651 continue;
652 } else {
653 goto fail;
654 }
655 }
656
657 start = max(last, start);
658 last = end + 1;
659 if (last - start < num_bytes)
660 continue;
661
662 last = start + num_bytes;
663 if (test_range_bit(&root->fs_info->pinned_extents,
664 start, last - 1, EXTENT_DIRTY, 0))
665 continue;
666
667 cache = btrfs_lookup_block_group(root->fs_info, start);
668 BUG_ON(!cache);
669 if (cache->flags & BTRFS_BLOCK_GROUP_SYSTEM ||
670 last > cache->key.objectid + cache->key.offset) {
671 last = cache->key.objectid + cache->key.offset;
672 continue;
673 }
674
675 if (cache->flags & (BTRFS_BLOCK_GROUP_SYSTEM |
676 BTRFS_BLOCK_GROUP_METADATA)) {
677 last = cache->key.objectid + cache->key.offset;
678 continue;
679 }
680
681 clear_extent_dirty(&root->fs_info->free_space_cache,
682 start, start + num_bytes - 1, 0);
683
684 ins->objectid = start;
685 ins->offset = num_bytes;
686 ins->type = BTRFS_EXTENT_ITEM_KEY;
687 return 0;
688 }
689 fail:
690 fprintf(stderr, "not enough free space\n");
691 return -ENOSPC;
692 }
693
694 static int record_file_extent(struct btrfs_trans_handle *trans,
695 struct btrfs_root *root, u64 objectid,
696 struct btrfs_inode_item *inode,
697 u64 file_pos, u64 disk_bytenr,
698 u64 num_bytes)
699 {
700 int ret;
701 struct btrfs_fs_info *info = root->fs_info;
702 struct btrfs_root *extent_root = info->extent_root;
703 struct extent_buffer *leaf;
704 struct btrfs_file_extent_item *fi;
705 struct btrfs_key ins_key;
706 struct btrfs_path path;
707 struct btrfs_extent_item *ei;
708
709 btrfs_init_path(&path);
710
711 ins_key.objectid = objectid;
712 ins_key.offset = 0;
713 btrfs_set_key_type(&ins_key, BTRFS_EXTENT_DATA_KEY);
714 ret = btrfs_insert_empty_item(trans, root, &path, &ins_key,
715 sizeof(*fi));
716 if (ret)
717 goto fail;
718 leaf = path.nodes[0];
719 fi = btrfs_item_ptr(leaf, path.slots[0],
720 struct btrfs_file_extent_item);
721 btrfs_set_file_extent_generation(leaf, fi, trans->transid);
722 btrfs_set_file_extent_type(leaf, fi, BTRFS_FILE_EXTENT_REG);
723 btrfs_set_file_extent_disk_bytenr(leaf, fi, disk_bytenr);
724 btrfs_set_file_extent_disk_num_bytes(leaf, fi, num_bytes);
725 btrfs_set_file_extent_offset(leaf, fi, 0);
726 btrfs_set_file_extent_num_bytes(leaf, fi, num_bytes);
727 btrfs_set_file_extent_ram_bytes(leaf, fi, num_bytes);
728 btrfs_set_file_extent_compression(leaf, fi, 0);
729 btrfs_set_file_extent_encryption(leaf, fi, 0);
730 btrfs_set_file_extent_other_encoding(leaf, fi, 0);
731 btrfs_mark_buffer_dirty(leaf);
732
733 btrfs_release_path(root, &path);
734
735 ins_key.objectid = disk_bytenr;
736 ins_key.offset = num_bytes;
737 ins_key.type = BTRFS_EXTENT_ITEM_KEY;
738
739 ret = btrfs_insert_empty_item(trans, extent_root, &path,
740 &ins_key, sizeof(*ei));
741 if (ret == 0) {
742 leaf = path.nodes[0];
743 ei = btrfs_item_ptr(leaf, path.slots[0],
744 struct btrfs_extent_item);
745
746 btrfs_set_extent_refs(leaf, ei, 0);
747 btrfs_set_extent_generation(leaf, ei, trans->transid);
748 btrfs_set_extent_flags(leaf, ei, BTRFS_EXTENT_FLAG_DATA);
749
750 btrfs_mark_buffer_dirty(leaf);
751 ret = btrfs_update_block_group(trans, root, disk_bytenr,
752 num_bytes, 1, 0);
753 if (ret)
754 goto fail;
755 } else if (ret != -EEXIST) {
756 goto fail;
757 }
758
759 ret = btrfs_inc_extent_ref(trans, root, disk_bytenr, num_bytes, 0,
760 root->root_key.objectid,
761 objectid, 0);
762 fail:
763 btrfs_release_path(root, &path);
764 return ret;
765 }
766
767 static int add_symbolic_link(struct btrfs_trans_handle *trans,
768 struct btrfs_root *root,
769 u64 objectid, const char *path_name)
770 {
771 int ret;
772 u64 sectorsize = root->sectorsize;
773 char *buf = malloc(sectorsize);
774
775 ret = readlink(path_name, buf, sectorsize);
776 if (ret <= 0) {
777 fprintf(stderr, "readlink failed for %s\n", path_name);
778 goto fail;
779 }
780 if (ret >= sectorsize) {
781 fprintf(stderr, "symlink too long for %s", path_name);
782 ret = -1;
783 goto fail;
784 }
785
786 buf[ret] = '\0'; /* readlink does not do it for us */
787 ret = btrfs_insert_inline_extent(trans, root, objectid, 0,
788 buf, ret + 1);
789 fail:
790 free(buf);
791 return ret;
792 }
793
794 static int add_file_items(struct btrfs_trans_handle *trans,
795 struct btrfs_root *root,
796 struct btrfs_inode_item *btrfs_inode, u64 objectid,
797 ino_t parent_inum, struct stat *st,
798 const char *path_name, int out_fd)
799 {
800 int ret = -1;
801 ssize_t ret_read;
802 u64 bytes_read = 0;
803 char *buffer = NULL;
804 struct btrfs_key key;
805 int blocks;
806 u32 sectorsize = root->sectorsize;
807 u64 first_block = 0;
808 u64 num_blocks = 0;
809 int fd;
810
811 fd = open(path_name, O_RDONLY);
812 if (fd == -1) {
813 fprintf(stderr, "%s open failed\n", path_name);
814 goto end;
815 }
816
817 blocks = st->st_size / sectorsize;
818 if (st->st_size % sectorsize)
819 blocks += 1;
820
821 if (st->st_size <= BTRFS_MAX_INLINE_DATA_SIZE(root)) {
822 buffer = malloc(st->st_size);
823 ret_read = pread64(fd, buffer, st->st_size, bytes_read);
824 if (ret_read == -1) {
825 fprintf(stderr, "%s read failed\n", path_name);
826 goto end;
827 }
828
829 ret = btrfs_insert_inline_extent(trans, root, objectid, 0,
830 buffer, st->st_size);
831 goto end;
832 }
833
834 ret = custom_alloc_extent(root, blocks * sectorsize, 0, &key);
835 if (ret)
836 goto end;
837
838 first_block = key.objectid;
839 bytes_read = 0;
840 buffer = malloc(sectorsize);
841
842 do {
843 memset(buffer, 0, sectorsize);
844 ret_read = pread64(fd, buffer, sectorsize, bytes_read);
845 if (ret_read == -1) {
846 fprintf(stderr, "%s read failed\n", path_name);
847 goto end;
848 }
849
850 ret = pwrite64(out_fd, buffer, sectorsize,
851 first_block + bytes_read);
852 if (ret != sectorsize) {
853 fprintf(stderr, "output file write failed\n");
854 goto end;
855 }
856
857 /* checksum for file data */
858 ret = btrfs_csum_file_block(trans, root->fs_info->csum_root,
859 first_block + (blocks * sectorsize),
860 first_block + bytes_read,
861 buffer, sectorsize);
862 if (ret) {
863 fprintf(stderr, "%s checksum failed\n", path_name);
864 goto end;
865 }
866
867 bytes_read += ret_read;
868 num_blocks++;
869 } while (ret_read == sectorsize);
870
871 if (num_blocks > 0) {
872 ret = record_file_extent(trans, root, objectid, btrfs_inode,
873 first_block, first_block,
874 blocks * sectorsize);
875 if (ret)
876 goto end;
877 }
878
879 end:
880 if (buffer)
881 free(buffer);
882 close(fd);
883 return ret;
884 }
885
886 static char *make_path(char *dir, char *name)
887 {
888 char *path;
889
890 path = malloc(strlen(dir) + strlen(name) + 2);
891 if (!path)
892 return NULL;
893 strcpy(path, dir);
894 if (dir[strlen(dir) - 1] != '/')
895 strcat(path, "/");
896 strcat(path, name);
897 return path;
898 }
899
900 static int traverse_directory(struct btrfs_trans_handle *trans,
901 struct btrfs_root *root, char *dir_name,
902 struct directory_name_entry *dir_head, int out_fd)
903 {
904 int ret = 0;
905
906 struct btrfs_inode_item cur_inode;
907 struct btrfs_inode_item *inode_item;
908 int count, i, dir_index_cnt;
909 struct direct **files;
910 struct stat st;
911 struct directory_name_entry *dir_entry, *parent_dir_entry;
912 struct direct *cur_file;
913 ino_t parent_inum, cur_inum;
914 ino_t highest_inum = 0;
915 char *parent_dir_name;
916 struct btrfs_path path;
917 struct extent_buffer *leaf;
918 struct btrfs_key root_dir_key;
919 u64 root_dir_inode_size = 0;
920
921 /* Add list for source directory */
922 dir_entry = malloc(sizeof(struct directory_name_entry));
923 dir_entry->dir_name = dir_name;
924 dir_entry->path = strdup(dir_name);
925
926 parent_inum = highest_inum + BTRFS_FIRST_FREE_OBJECTID;
927 dir_entry->inum = parent_inum;
928 list_add_tail(&dir_entry->list, &dir_head->list);
929
930 btrfs_init_path(&path);
931
932 root_dir_key.objectid = btrfs_root_dirid(&root->root_item);
933 root_dir_key.offset = 0;
934 btrfs_set_key_type(&root_dir_key, BTRFS_INODE_ITEM_KEY);
935 ret = btrfs_lookup_inode(trans, root, &path, &root_dir_key, 1);
936 if (ret) {
937 fprintf(stderr, "root dir lookup error\n");
938 return -1;
939 }
940
941 leaf = path.nodes[0];
942 inode_item = btrfs_item_ptr(leaf, path.slots[0],
943 struct btrfs_inode_item);
944
945 root_dir_inode_size = calculate_dir_inode_size(dir_name);
946 btrfs_set_inode_size(leaf, inode_item, root_dir_inode_size);
947 btrfs_mark_buffer_dirty(leaf);
948
949 btrfs_release_path(root, &path);
950
951 do {
952 parent_dir_entry = list_entry(dir_head->list.next,
953 struct directory_name_entry,
954 list);
955 list_del(&parent_dir_entry->list);
956
957 parent_inum = parent_dir_entry->inum;
958 parent_dir_name = parent_dir_entry->dir_name;
959 if (chdir(parent_dir_entry->path)) {
960 fprintf(stderr, "chdir error for %s\n",
961 parent_dir_name);
962 goto fail_no_files;
963 }
964
965 count = scandir(parent_dir_entry->path, &files,
966 directory_select, NULL);
967 if (count == -1)
968 {
969 fprintf(stderr, "scandir for %s failed: %s\n",
970 parent_dir_name, strerror (errno));
971 goto fail;
972 }
973
974 for (i = 0; i < count; i++) {
975 cur_file = files[i];
976
977 if (lstat(cur_file->d_name, &st) == -1) {
978 fprintf(stderr, "lstat failed for file %s\n",
979 cur_file->d_name);
980 goto fail;
981 }
982
983 cur_inum = ++highest_inum + BTRFS_FIRST_FREE_OBJECTID;
984 ret = add_directory_items(trans, root,
985 cur_inum, parent_inum,
986 cur_file->d_name,
987 &st, &dir_index_cnt);
988 if (ret) {
989 fprintf(stderr, "add_directory_items failed\n");
990 goto fail;
991 }
992
993 ret = add_inode_items(trans, root, &st,
994 cur_file->d_name, cur_inum,
995 parent_inum, dir_index_cnt,
996 &cur_inode);
997 if (ret) {
998 fprintf(stderr, "add_inode_items failed\n");
999 goto fail;
1000 }
1001
1002 ret = add_xattr_item(trans, root,
1003 cur_inum, cur_file->d_name);
1004 if (ret) {
1005 fprintf(stderr, "add_xattr_item failed\n");
1006 if(ret != -ENOTSUP)
1007 goto fail;
1008 }
1009
1010 if (S_ISDIR(st.st_mode)) {
1011 dir_entry = malloc(sizeof(struct directory_name_entry));
1012 dir_entry->dir_name = cur_file->d_name;
1013 dir_entry->path = make_path(parent_dir_entry->path,
1014 cur_file->d_name);
1015 dir_entry->inum = cur_inum;
1016 list_add_tail(&dir_entry->list, &dir_head->list);
1017 } else if (S_ISREG(st.st_mode)) {
1018 ret = add_file_items(trans, root, &cur_inode,
1019 cur_inum, parent_inum, &st,
1020 cur_file->d_name, out_fd);
1021 if (ret) {
1022 fprintf(stderr, "add_file_items failed\n");
1023 goto fail;
1024 }
1025 } else if (S_ISLNK(st.st_mode)) {
1026 ret = add_symbolic_link(trans, root,
1027 cur_inum, cur_file->d_name);
1028 if (ret) {
1029 fprintf(stderr, "add_symbolic_link failed\n");
1030 goto fail;
1031 }
1032 }
1033 }
1034
1035 free_namelist(files, count);
1036 free(parent_dir_entry->path);
1037 free(parent_dir_entry);
1038
1039 index_cnt = 2;
1040
1041 } while (!list_empty(&dir_head->list));
1042
1043 return 0;
1044 fail:
1045 free_namelist(files, count);
1046 fail_no_files:
1047 free(parent_dir_entry->path);
1048 free(parent_dir_entry);
1049 return -1;
1050 }
1051
1052 static int open_target(char *output_name)
1053 {
1054 int output_fd;
1055 output_fd = open(output_name, O_CREAT | O_RDWR | O_TRUNC,
1056 S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH);
1057
1058 return output_fd;
1059 }
1060
1061 static int create_chunks(struct btrfs_trans_handle *trans,
1062 struct btrfs_root *root, u64 num_of_meta_chunks,
1063 u64 size_of_data)
1064 {
1065 u64 chunk_start;
1066 u64 chunk_size;
1067 u64 meta_type = BTRFS_BLOCK_GROUP_METADATA;
1068 u64 data_type = BTRFS_BLOCK_GROUP_DATA;
1069 u64 minimum_data_chunk_size = 8 * 1024 * 1024;
1070 u64 i;
1071 int ret;
1072
1073 for (i = 0; i < num_of_meta_chunks; i++) {
1074 ret = btrfs_alloc_chunk(trans, root->fs_info->extent_root,
1075 &chunk_start, &chunk_size, meta_type);
1076 BUG_ON(ret);
1077 ret = btrfs_make_block_group(trans, root->fs_info->extent_root, 0,
1078 meta_type, BTRFS_FIRST_CHUNK_TREE_OBJECTID,
1079 chunk_start, chunk_size);
1080 BUG_ON(ret);
1081 set_extent_dirty(&root->fs_info->free_space_cache,
1082 chunk_start, chunk_start + chunk_size - 1, 0);
1083 }
1084
1085 if (size_of_data < minimum_data_chunk_size)
1086 size_of_data = minimum_data_chunk_size;
1087 ret = btrfs_alloc_data_chunk(trans, root->fs_info->extent_root,
1088 &chunk_start, size_of_data, data_type);
1089 BUG_ON(ret);
1090 ret = btrfs_make_block_group(trans, root->fs_info->extent_root, 0,
1091 data_type, BTRFS_FIRST_CHUNK_TREE_OBJECTID,
1092 chunk_start, size_of_data);
1093 BUG_ON(ret);
1094 set_extent_dirty(&root->fs_info->free_space_cache,
1095 chunk_start, chunk_start + size_of_data - 1, 0);
1096 return ret;
1097 }
1098
1099 static int make_image(char *source_dir, struct btrfs_root *root, int out_fd)
1100 {
1101 int ret;
1102 struct btrfs_trans_handle *trans;
1103
1104 struct stat root_st;
1105
1106 struct directory_name_entry dir_head;
1107
1108 ret = lstat(source_dir, &root_st);
1109 if (ret) {
1110 fprintf(stderr, "unable to lstat the %s\n", source_dir);
1111 goto fail;
1112 }
1113
1114 INIT_LIST_HEAD(&dir_head.list);
1115
1116 trans = btrfs_start_transaction(root, 1);
1117 ret = traverse_directory(trans, root, source_dir, &dir_head, out_fd);
1118 if (ret) {
1119 fprintf(stderr, "unable to traverse_directory\n");
1120 goto fail;
1121 }
1122 btrfs_commit_transaction(trans, root);
1123
1124 printf("Making image is completed.\n");
1125 return 0;
1126 fail:
1127 fprintf(stderr, "Making image is aborted.\n");
1128 return -1;
1129 }
1130
1131 static u64 size_sourcedir(char *dir_name, u64 sectorsize,
1132 u64 *num_of_meta_chunks_ret, u64 *size_of_data_ret)
1133 {
1134 u64 dir_size = 0;
1135 u64 total_size = 0;
1136 int ret;
1137 char command[1024];
1138 char path[512];
1139 char *file_name = "temp_file";
1140 FILE *file;
1141 u64 default_chunk_size = 8 * 1024 * 1024; /* 8MB */
1142 u64 allocated_meta_size = 8 * 1024 * 1024; /* 8MB */
1143 u64 allocated_total_size = 20 * 1024 * 1024; /* 20MB */
1144 u64 num_of_meta_chunks = 0;
1145 u64 num_of_allocated_meta_chunks =
1146 allocated_meta_size / default_chunk_size;
1147
1148 ret = sprintf(command, "du -B 4096 -s ");
1149 if (ret < 0) {
1150 fprintf(stderr, "error executing sprintf for du command\n");
1151 return -1;
1152 }
1153 strcat(command, dir_name);
1154 strcat(command, " > ");
1155 strcat(command, file_name);
1156 ret = system(command);
1157
1158 file = fopen(file_name, "r");
1159 ret = fscanf(file, "%lld %s\n", &dir_size, path);
1160 fclose(file);
1161 remove(file_name);
1162
1163 dir_size *= sectorsize;
1164 *size_of_data_ret = dir_size;
1165
1166 num_of_meta_chunks = (dir_size / 2) / default_chunk_size;
1167 if (((dir_size / 2) % default_chunk_size) != 0)
1168 num_of_meta_chunks++;
1169 if (num_of_meta_chunks <= num_of_allocated_meta_chunks)
1170 num_of_meta_chunks = 0;
1171 else
1172 num_of_meta_chunks -= num_of_allocated_meta_chunks;
1173
1174 total_size = allocated_total_size + dir_size +
1175 (num_of_meta_chunks * default_chunk_size);
1176
1177 *num_of_meta_chunks_ret = num_of_meta_chunks;
1178
1179 return total_size;
1180 }
1181
1182 static int zero_output_file(int out_fd, u64 size, u32 sectorsize)
1183 {
1184 int len = sectorsize;
1185 int loop_num = size / sectorsize;
1186 u64 location = 0;
1187 char *buf = malloc(len);
1188 int ret = 0, i;
1189 ssize_t written;
1190
1191 if (!buf)
1192 return -ENOMEM;
1193 memset(buf, 0, len);
1194 for (i = 0; i < loop_num; i++) {
1195 written = pwrite64(out_fd, buf, len, location);
1196 if (written != len)
1197 ret = -EIO;
1198 location += sectorsize;
1199 }
1200 free(buf);
1201 return ret;
1202 }
1203
1204 int main(int ac, char **av)
1205 {
1206 char *file;
1207 struct btrfs_root *root;
1208 struct btrfs_trans_handle *trans;
1209 char *label = NULL;
1210 char *first_file;
1211 u64 block_count = 0;
1212 u64 dev_block_count = 0;
1213 u64 blocks[7];
1214 u64 alloc_start = 0;
1215 u64 metadata_profile = 0;
1216 u64 data_profile = 0;
1217 u32 leafsize = getpagesize();
1218 u32 sectorsize = 4096;
1219 u32 nodesize = leafsize;
1220 u32 stripesize = 4096;
1221 int zero_end = 1;
1222 int option_index = 0;
1223 int fd;
1224 int ret;
1225 int i;
1226 int mixed = 0;
1227 int data_profile_opt = 0;
1228 int metadata_profile_opt = 0;
1229 int nodiscard = 0;
1230
1231 char *source_dir = NULL;
1232 int source_dir_set = 0;
1233 u64 num_of_meta_chunks = 0;
1234 u64 size_of_data = 0;
1235 u64 source_dir_size = 0;
1236 char *pretty_buf;
1237
1238 while(1) {
1239 int c;
1240 c = getopt_long(ac, av, "A:b:l:n:s:m:d:L:r:VMK", long_options,
1241 &option_index);
1242 if (c < 0)
1243 break;
1244 switch(c) {
1245 case 'A':
1246 alloc_start = parse_size(optarg);
1247 break;
1248 case 'd':
1249 data_profile = parse_profile(optarg);
1250 data_profile_opt = 1;
1251 break;
1252 case 'l':
1253 case 'n':
1254 nodesize = parse_size(optarg);
1255 leafsize = parse_size(optarg);
1256 break;
1257 case 'L':
1258 label = parse_label(optarg);
1259 break;
1260 case 'm':
1261 metadata_profile = parse_profile(optarg);
1262 metadata_profile_opt = 1;
1263 break;
1264 case 'M':
1265 mixed = 1;
1266 break;
1267 case 's':
1268 sectorsize = parse_size(optarg);
1269 break;
1270 case 'b':
1271 block_count = parse_size(optarg);
1272 if (block_count <= 1024*1024*1024) {
1273 printf("SMALL VOLUME: forcing mixed "
1274 "metadata/data groups\n");
1275 mixed = 1;
1276 }
1277 zero_end = 0;
1278 break;
1279 case 'V':
1280 print_version();
1281 break;
1282 case 'r':
1283 source_dir = optarg;
1284 source_dir_set = 1;
1285 break;
1286 case 'K':
1287 nodiscard=1;
1288 break;
1289 default:
1290 print_usage();
1291 }
1292 }
1293 sectorsize = max(sectorsize, (u32)getpagesize());
1294 if (leafsize < sectorsize || (leafsize & (sectorsize - 1))) {
1295 fprintf(stderr, "Illegal leafsize %u\n", leafsize);
1296 exit(1);
1297 }
1298 if (nodesize < sectorsize || (nodesize & (sectorsize - 1))) {
1299 fprintf(stderr, "Illegal nodesize %u\n", nodesize);
1300 exit(1);
1301 }
1302 ac = ac - optind;
1303 if (ac == 0)
1304 print_usage();
1305
1306 printf("\nWARNING! - %s IS EXPERIMENTAL\n", BTRFS_BUILD_VERSION);
1307 printf("WARNING! - see http://btrfs.wiki.kernel.org before using\n\n");
1308
1309 if (source_dir == 0) {
1310 file = av[optind++];
1311 ret = check_mounted(file);
1312 if (ret < 0) {
1313 fprintf(stderr, "error checking %s mount status\n", file);
1314 exit(1);
1315 }
1316 if (ret == 1) {
1317 fprintf(stderr, "%s is mounted\n", file);
1318 exit(1);
1319 }
1320 ac--;
1321 fd = open(file, O_RDWR);
1322 if (fd < 0) {
1323 fprintf(stderr, "unable to open %s\n", file);
1324 exit(1);
1325 }
1326 first_file = file;
1327 ret = __btrfs_prepare_device(fd, file, zero_end,
1328 &dev_block_count, &mixed, nodiscard);
1329 if (block_count == 0)
1330 block_count = dev_block_count;
1331 else if (block_count > dev_block_count) {
1332 fprintf(stderr, "%s is smaller than requested size\n", file);
1333 exit(1);
1334 }
1335 } else {
1336 ac = 0;
1337 file = av[optind++];
1338 fd = open_target(file);
1339 if (fd < 0) {
1340 fprintf(stderr, "unable to open the %s\n", file);
1341 exit(1);
1342 }
1343
1344 first_file = file;
1345 source_dir_size = size_sourcedir(source_dir, sectorsize,
1346 &num_of_meta_chunks, &size_of_data);
1347 if(block_count < source_dir_size)
1348 block_count = source_dir_size;
1349 ret = zero_output_file(fd, block_count, sectorsize);
1350 if (ret) {
1351 fprintf(stderr, "unable to zero the output file\n");
1352 exit(1);
1353 }
1354 }
1355 if (mixed) {
1356 if (metadata_profile != data_profile) {
1357 fprintf(stderr, "With mixed block groups data and metadata "
1358 "profiles must be the same\n");
1359 exit(1);
1360 }
1361 }
1362
1363 blocks[0] = BTRFS_SUPER_INFO_OFFSET;
1364 for (i = 1; i < 7; i++) {
1365 blocks[i] = BTRFS_SUPER_INFO_OFFSET + 1024 * 1024 +
1366 leafsize * i;
1367 }
1368
1369 ret = make_btrfs(fd, file, label, blocks, block_count,
1370 nodesize, leafsize,
1371 sectorsize, stripesize);
1372 if (ret) {
1373 fprintf(stderr, "error during mkfs %d\n", ret);
1374 exit(1);
1375 }
1376
1377 root = open_ctree(file, 0, O_RDWR);
1378 if (!root) {
1379 fprintf(stderr, "ctree init failed\n");
1380 exit(1);
1381 }
1382 root->fs_info->alloc_start = alloc_start;
1383
1384 ret = make_root_dir(root, mixed);
1385 if (ret) {
1386 fprintf(stderr, "failed to setup the root directory\n");
1387 exit(1);
1388 }
1389
1390 trans = btrfs_start_transaction(root, 1);
1391
1392 if (ac == 0)
1393 goto raid_groups;
1394
1395 btrfs_register_one_device(file);
1396
1397 zero_end = 1;
1398 while(ac-- > 0) {
1399 int old_mixed = mixed;
1400
1401 file = av[optind++];
1402 ret = check_mounted(file);
1403 if (ret < 0) {
1404 fprintf(stderr, "error checking %s mount status\n",
1405 file);
1406 exit(1);
1407 }
1408 if (ret == 1) {
1409 fprintf(stderr, "%s is mounted\n", file);
1410 exit(1);
1411 }
1412 fd = open(file, O_RDWR);
1413 if (fd < 0) {
1414 fprintf(stderr, "unable to open %s\n", file);
1415 exit(1);
1416 }
1417 ret = btrfs_device_already_in_root(root, fd,
1418 BTRFS_SUPER_INFO_OFFSET);
1419 if (ret) {
1420 fprintf(stderr, "skipping duplicate device %s in FS\n",
1421 file);
1422 close(fd);
1423 continue;
1424 }
1425 dev_block_count = block_count;
1426 ret = __btrfs_prepare_device(fd, file, zero_end,
1427 &dev_block_count, &mixed, nodiscard);
1428 mixed = old_mixed;
1429 BUG_ON(ret);
1430
1431 ret = btrfs_add_to_fsid(trans, root, fd, file, dev_block_count,
1432 sectorsize, sectorsize, sectorsize);
1433 BUG_ON(ret);
1434 btrfs_register_one_device(file);
1435 }
1436
1437 raid_groups:
1438 if (!source_dir_set) {
1439 ret = create_raid_groups(trans, root, data_profile,
1440 data_profile_opt, metadata_profile,
1441 metadata_profile_opt, mixed);
1442 BUG_ON(ret);
1443 }
1444
1445 ret = create_data_reloc_tree(trans, root);
1446 BUG_ON(ret);
1447
1448 if (mixed) {
1449 struct btrfs_super_block *super = &root->fs_info->super_copy;
1450 u64 flags = btrfs_super_incompat_flags(super);
1451
1452 flags |= BTRFS_FEATURE_INCOMPAT_MIXED_GROUPS;
1453 btrfs_set_super_incompat_flags(super, flags);
1454 }
1455
1456 printf("fs created label %s on %s\n\tnodesize %u leafsize %u "
1457 "sectorsize %u size %s\n",
1458 label, first_file, nodesize, leafsize, sectorsize,
1459 pretty_buf = pretty_sizes(btrfs_super_total_bytes(&root->fs_info->super_copy)));
1460 free(pretty_buf);
1461
1462 printf("%s\n", BTRFS_BUILD_VERSION);
1463 btrfs_commit_transaction(trans, root);
1464
1465 if (source_dir_set) {
1466 trans = btrfs_start_transaction(root, 1);
1467 ret = create_chunks(trans, root,
1468 num_of_meta_chunks, size_of_data);
1469 BUG_ON(ret);
1470 btrfs_commit_transaction(trans, root);
1471
1472 ret = make_image(source_dir, root, fd);
1473 BUG_ON(ret);
1474 }
1475
1476 ret = close_ctree(root);
1477 BUG_ON(ret);
1478
1479 free(label);
1480 return 0;
1481 }
1482
(deprecated) Btrfs progs developments and patch integration