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btrfs-progs: tests: add mkfs tests
[btrfs-progs-unstable/devel.git] / mkfs.c
blob5940abd9457e3340049dffacd6b9d726425bd8bb
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 #include "kerncompat.h"
20 #include "androidcompat.h"
21
22 #include <sys/ioctl.h>
23 #include <sys/mount.h>
24 #include "ioctl.h"
25 #include <stdio.h>
26 #include <stdlib.h>
27 #include <sys/types.h>
28 #include <sys/stat.h>
29 /* #include <sys/dir.h> included via androidcompat.h */
30 #include <fcntl.h>
31 #include <unistd.h>
32 #include <getopt.h>
33 #include <uuid/uuid.h>
34 #include <ctype.h>
35 #include <sys/xattr.h>
36 #include <limits.h>
37 #include <linux/limits.h>
38 #include <blkid/blkid.h>
39 #include <ftw.h>
40 #include "ctree.h"
41 #include "disk-io.h"
42 #include "volumes.h"
43 #include "transaction.h"
44 #include "utils.h"
45
46 static u64 index_cnt = 2;
47 static int verbose = 1;
48
49 struct directory_name_entry {
50 char *dir_name;
51 char *path;
52 ino_t inum;
53 struct list_head list;
54 };
55
56 struct mkfs_allocation {
57 u64 data;
58 u64 metadata;
59 u64 mixed;
60 u64 system;
61 };
62
63 static int create_metadata_block_groups(struct btrfs_root *root, int mixed,
64 struct mkfs_allocation *allocation)
65 {
66 struct btrfs_trans_handle *trans;
67 u64 bytes_used;
68 u64 chunk_start = 0;
69 u64 chunk_size = 0;
70 int ret;
71
72 trans = btrfs_start_transaction(root, 1);
73 bytes_used = btrfs_super_bytes_used(root->fs_info->super_copy);
74
75 root->fs_info->system_allocs = 1;
76 ret = btrfs_make_block_group(trans, root, bytes_used,
77 BTRFS_BLOCK_GROUP_SYSTEM,
78 BTRFS_FIRST_CHUNK_TREE_OBJECTID,
79 0, BTRFS_MKFS_SYSTEM_GROUP_SIZE);
80 allocation->system += BTRFS_MKFS_SYSTEM_GROUP_SIZE;
81 BUG_ON(ret);
82
83 if (mixed) {
84 ret = btrfs_alloc_chunk(trans, root->fs_info->extent_root,
85 &chunk_start, &chunk_size,
86 BTRFS_BLOCK_GROUP_METADATA |
87 BTRFS_BLOCK_GROUP_DATA);
88 if (ret == -ENOSPC) {
89 fprintf(stderr,
90 "no space to alloc data/metadata chunk\n");
91 goto err;
92 }
93 BUG_ON(ret);
94 ret = btrfs_make_block_group(trans, root, 0,
95 BTRFS_BLOCK_GROUP_METADATA |
96 BTRFS_BLOCK_GROUP_DATA,
97 BTRFS_FIRST_CHUNK_TREE_OBJECTID,
98 chunk_start, chunk_size);
99 BUG_ON(ret);
100 allocation->mixed += chunk_size;
101 } else {
102 ret = btrfs_alloc_chunk(trans, root->fs_info->extent_root,
103 &chunk_start, &chunk_size,
104 BTRFS_BLOCK_GROUP_METADATA);
105 if (ret == -ENOSPC) {
106 fprintf(stderr, "no space to alloc metadata chunk\n");
107 goto err;
108 }
109 BUG_ON(ret);
110 ret = btrfs_make_block_group(trans, root, 0,
111 BTRFS_BLOCK_GROUP_METADATA,
112 BTRFS_FIRST_CHUNK_TREE_OBJECTID,
113 chunk_start, chunk_size);
114 allocation->metadata += chunk_size;
115 BUG_ON(ret);
116 }
117
118 root->fs_info->system_allocs = 0;
119 btrfs_commit_transaction(trans, root);
120
121 err:
122 return ret;
123 }
124
125 static int create_data_block_groups(struct btrfs_trans_handle *trans,
126 struct btrfs_root *root, int mixed,
127 struct mkfs_allocation *allocation)
128 {
129 u64 chunk_start = 0;
130 u64 chunk_size = 0;
131 int ret = 0;
132
133 if (!mixed) {
134 ret = btrfs_alloc_chunk(trans, root->fs_info->extent_root,
135 &chunk_start, &chunk_size,
136 BTRFS_BLOCK_GROUP_DATA);
137 if (ret == -ENOSPC) {
138 fprintf(stderr, "no space to alloc data chunk\n");
139 goto err;
140 }
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 allocation->data += chunk_size;
147 BUG_ON(ret);
148 }
149
150 err:
151 return ret;
152 }
153
154 static int make_root_dir(struct btrfs_trans_handle *trans, struct btrfs_root *root,
155 struct mkfs_allocation *allocation)
156 {
157 struct btrfs_key location;
158 int ret;
159
160 ret = btrfs_make_root_dir(trans, root->fs_info->tree_root,
161 BTRFS_ROOT_TREE_DIR_OBJECTID);
162 if (ret)
163 goto err;
164 ret = btrfs_make_root_dir(trans, root, BTRFS_FIRST_FREE_OBJECTID);
165 if (ret)
166 goto err;
167 memcpy(&location, &root->fs_info->fs_root->root_key, sizeof(location));
168 location.offset = (u64)-1;
169 ret = btrfs_insert_dir_item(trans, root->fs_info->tree_root,
170 "default", 7,
171 btrfs_super_root_dir(root->fs_info->super_copy),
172 &location, BTRFS_FT_DIR, 0);
173 if (ret)
174 goto err;
175
176 ret = btrfs_insert_inode_ref(trans, root->fs_info->tree_root,
177 "default", 7, location.objectid,
178 BTRFS_ROOT_TREE_DIR_OBJECTID, 0);
179 if (ret)
180 goto err;
181
182 err:
183 return ret;
184 }
185
186 static void __recow_root(struct btrfs_trans_handle *trans,
187 struct btrfs_root *root)
188 {
189 int ret;
190 struct extent_buffer *tmp;
191
192 if (trans->transid != btrfs_root_generation(&root->root_item)) {
193 extent_buffer_get(root->node);
194 ret = __btrfs_cow_block(trans, root, root->node,
195 NULL, 0, &tmp, 0, 0);
196 BUG_ON(ret);
197 free_extent_buffer(tmp);
198 }
199 }
200
201 static void recow_roots(struct btrfs_trans_handle *trans,
202 struct btrfs_root *root)
203 {
204 struct btrfs_fs_info *info = root->fs_info;
205
206 __recow_root(trans, info->fs_root);
207 __recow_root(trans, info->tree_root);
208 __recow_root(trans, info->extent_root);
209 __recow_root(trans, info->chunk_root);
210 __recow_root(trans, info->dev_root);
211 __recow_root(trans, info->csum_root);
212 }
213
214 static int create_one_raid_group(struct btrfs_trans_handle *trans,
215 struct btrfs_root *root, u64 type,
216 struct mkfs_allocation *allocation)
217
218 {
219 u64 chunk_start;
220 u64 chunk_size;
221 int ret;
222
223 ret = btrfs_alloc_chunk(trans, root->fs_info->extent_root,
224 &chunk_start, &chunk_size, type);
225 if (ret == -ENOSPC) {
226 fprintf(stderr, "not enough free space\n");
227 exit(1);
228 }
229 BUG_ON(ret);
230 ret = btrfs_make_block_group(trans, root->fs_info->extent_root, 0,
231 type, BTRFS_FIRST_CHUNK_TREE_OBJECTID,
232 chunk_start, chunk_size);
233 if ((type & BTRFS_BLOCK_GROUP_TYPE_MASK) == BTRFS_BLOCK_GROUP_DATA)
234 allocation->data += chunk_size;
235 else if ((type & BTRFS_BLOCK_GROUP_TYPE_MASK) == BTRFS_BLOCK_GROUP_METADATA)
236 allocation->metadata += chunk_size;
237 else if ((type & BTRFS_BLOCK_GROUP_TYPE_MASK) == BTRFS_BLOCK_GROUP_SYSTEM)
238 allocation->system += chunk_size;
239 else if ((type & BTRFS_BLOCK_GROUP_TYPE_MASK) ==
240 (BTRFS_BLOCK_GROUP_METADATA|BTRFS_BLOCK_GROUP_DATA))
241 allocation->mixed += chunk_size;
242 else
243 BUG_ON(1);
244
245 BUG_ON(ret);
246 return ret;
247 }
248
249 static int create_raid_groups(struct btrfs_trans_handle *trans,
250 struct btrfs_root *root, u64 data_profile,
251 u64 metadata_profile, int mixed,
252 struct mkfs_allocation *allocation)
253 {
254 u64 num_devices = btrfs_super_num_devices(root->fs_info->super_copy);
255 int ret;
256
257 if (metadata_profile) {
258 u64 meta_flags = BTRFS_BLOCK_GROUP_METADATA;
259
260 ret = create_one_raid_group(trans, root,
261 BTRFS_BLOCK_GROUP_SYSTEM |
262 metadata_profile, allocation);
263 BUG_ON(ret);
264
265 if (mixed)
266 meta_flags |= BTRFS_BLOCK_GROUP_DATA;
267
268 ret = create_one_raid_group(trans, root, meta_flags |
269 metadata_profile, allocation);
270 BUG_ON(ret);
271
272 }
273 if (!mixed && num_devices > 1 && data_profile) {
274 ret = create_one_raid_group(trans, root,
275 BTRFS_BLOCK_GROUP_DATA |
276 data_profile, allocation);
277 BUG_ON(ret);
278 }
279 recow_roots(trans, root);
280
281 return 0;
282 }
283
284 static int create_data_reloc_tree(struct btrfs_trans_handle *trans,
285 struct btrfs_root *root)
286 {
287 struct btrfs_key location;
288 struct btrfs_root_item root_item;
289 struct extent_buffer *tmp;
290 u64 objectid = BTRFS_DATA_RELOC_TREE_OBJECTID;
291 int ret;
292
293 ret = btrfs_copy_root(trans, root, root->node, &tmp, objectid);
294 BUG_ON(ret);
295
296 memcpy(&root_item, &root->root_item, sizeof(root_item));
297 btrfs_set_root_bytenr(&root_item, tmp->start);
298 btrfs_set_root_level(&root_item, btrfs_header_level(tmp));
299 btrfs_set_root_generation(&root_item, trans->transid);
300 free_extent_buffer(tmp);
301
302 location.objectid = objectid;
303 location.type = BTRFS_ROOT_ITEM_KEY;
304 location.offset = 0;
305 ret = btrfs_insert_root(trans, root->fs_info->tree_root,
306 &location, &root_item);
307 BUG_ON(ret);
308 return 0;
309 }
310
311 static void print_usage(int ret)
312 {
313 fprintf(stderr, "usage: mkfs.btrfs [options] dev [ dev ... ]\n");
314 fprintf(stderr, "options:\n");
315 fprintf(stderr, "\t-A|--alloc-start START the offset to start the FS\n");
316 fprintf(stderr, "\t-b|--byte-count SIZE total number of bytes in the FS\n");
317 fprintf(stderr, "\t-d|--data PROFILE data profile, raid0, raid1, raid5, raid6, raid10, dup or single\n");
318 fprintf(stderr, "\t-f|--force force overwrite of existing filesystem\n");
319 fprintf(stderr, "\t-l|--leafsize SIZE deprecated, alias for nodesize\n");
320 fprintf(stderr, "\t-L|--label LABEL set a label\n");
321 fprintf(stderr, "\t-m|--metadata PROFILE metadata profile, values like data profile\n");
322 fprintf(stderr, "\t-M|--mixed mix metadata and data together\n");
323 fprintf(stderr, "\t-n|--nodesize SIZE size of btree nodes\n");
324 fprintf(stderr, "\t-s|--sectorsize SIZE min block allocation (may not mountable by current kernel)\n");
325 fprintf(stderr, "\t-r|--rootdir DIR the source directory\n");
326 fprintf(stderr, "\t-K|--nodiscard do not perform whole device TRIM\n");
327 fprintf(stderr, "\t-O|--features LIST comma separated list of filesystem features, use '-O list-all' to list features\n");
328 fprintf(stderr, "\t-U|--uuid UUID specify the filesystem UUID\n");
329 fprintf(stderr, "\t-q|--quiet no messages except errors\n");
330 fprintf(stderr, "\t-V|--version print the mkfs.btrfs version and exit\n");
331 fprintf(stderr, "%s\n", PACKAGE_STRING);
332 exit(ret);
333 }
334
335 static void print_version(void) __attribute__((noreturn));
336 static void print_version(void)
337 {
338 fprintf(stderr, "mkfs.btrfs, part of %s\n", PACKAGE_STRING);
339 exit(0);
340 }
341
342 static u64 parse_profile(char *s)
343 {
344 if (strcmp(s, "raid0") == 0) {
345 return BTRFS_BLOCK_GROUP_RAID0;
346 } else if (strcasecmp(s, "raid1") == 0) {
347 return BTRFS_BLOCK_GROUP_RAID1;
348 } else if (strcasecmp(s, "raid5") == 0) {
349 return BTRFS_BLOCK_GROUP_RAID5;
350 } else if (strcasecmp(s, "raid6") == 0) {
351 return BTRFS_BLOCK_GROUP_RAID6;
352 } else if (strcasecmp(s, "raid10") == 0) {
353 return BTRFS_BLOCK_GROUP_RAID10;
354 } else if (strcasecmp(s, "dup") == 0) {
355 return BTRFS_BLOCK_GROUP_DUP;
356 } else if (strcasecmp(s, "single") == 0) {
357 return 0;
358 } else {
359 fprintf(stderr, "Unknown profile %s\n", s);
360 exit(1);
361 }
362 /* not reached */
363 return 0;
364 }
365
366 static char *parse_label(char *input)
367 {
368 int len = strlen(input);
369
370 if (len >= BTRFS_LABEL_SIZE) {
371 fprintf(stderr, "Label %s is too long (max %d)\n", input,
372 BTRFS_LABEL_SIZE - 1);
373 exit(1);
374 }
375 return strdup(input);
376 }
377
378 static int add_directory_items(struct btrfs_trans_handle *trans,
379 struct btrfs_root *root, u64 objectid,
380 ino_t parent_inum, const char *name,
381 struct stat *st, int *dir_index_cnt)
382 {
383 int ret;
384 int name_len;
385 struct btrfs_key location;
386 u8 filetype = 0;
387
388 name_len = strlen(name);
389
390 location.objectid = objectid;
391 location.offset = 0;
392 btrfs_set_key_type(&location, BTRFS_INODE_ITEM_KEY);
393
394 if (S_ISDIR(st->st_mode))
395 filetype = BTRFS_FT_DIR;
396 if (S_ISREG(st->st_mode))
397 filetype = BTRFS_FT_REG_FILE;
398 if (S_ISLNK(st->st_mode))
399 filetype = BTRFS_FT_SYMLINK;
400
401 ret = btrfs_insert_dir_item(trans, root, name, name_len,
402 parent_inum, &location,
403 filetype, index_cnt);
404 if (ret)
405 return ret;
406 ret = btrfs_insert_inode_ref(trans, root, name, name_len,
407 objectid, parent_inum, index_cnt);
408 *dir_index_cnt = index_cnt;
409 index_cnt++;
410
411 return ret;
412 }
413
414 static int fill_inode_item(struct btrfs_trans_handle *trans,
415 struct btrfs_root *root,
416 struct btrfs_inode_item *dst, struct stat *src)
417 {
418 u64 blocks = 0;
419 u64 sectorsize = root->sectorsize;
420
421 /*
422 * btrfs_inode_item has some reserved fields
423 * and represents on-disk inode entry, so
424 * zero everything to prevent information leak
425 */
426 memset(dst, 0, sizeof (*dst));
427
428 btrfs_set_stack_inode_generation(dst, trans->transid);
429 btrfs_set_stack_inode_size(dst, src->st_size);
430 btrfs_set_stack_inode_nbytes(dst, 0);
431 btrfs_set_stack_inode_block_group(dst, 0);
432 btrfs_set_stack_inode_nlink(dst, src->st_nlink);
433 btrfs_set_stack_inode_uid(dst, src->st_uid);
434 btrfs_set_stack_inode_gid(dst, src->st_gid);
435 btrfs_set_stack_inode_mode(dst, src->st_mode);
436 btrfs_set_stack_inode_rdev(dst, 0);
437 btrfs_set_stack_inode_flags(dst, 0);
438 btrfs_set_stack_timespec_sec(&dst->atime, src->st_atime);
439 btrfs_set_stack_timespec_nsec(&dst->atime, 0);
440 btrfs_set_stack_timespec_sec(&dst->ctime, src->st_ctime);
441 btrfs_set_stack_timespec_nsec(&dst->ctime, 0);
442 btrfs_set_stack_timespec_sec(&dst->mtime, src->st_mtime);
443 btrfs_set_stack_timespec_nsec(&dst->mtime, 0);
444 btrfs_set_stack_timespec_sec(&dst->otime, 0);
445 btrfs_set_stack_timespec_nsec(&dst->otime, 0);
446
447 if (S_ISDIR(src->st_mode)) {
448 btrfs_set_stack_inode_size(dst, 0);
449 btrfs_set_stack_inode_nlink(dst, 1);
450 }
451 if (S_ISREG(src->st_mode)) {
452 btrfs_set_stack_inode_size(dst, (u64)src->st_size);
453 if (src->st_size <= BTRFS_MAX_INLINE_DATA_SIZE(root))
454 btrfs_set_stack_inode_nbytes(dst, src->st_size);
455 else {
456 blocks = src->st_size / sectorsize;
457 if (src->st_size % sectorsize)
458 blocks += 1;
459 blocks *= sectorsize;
460 btrfs_set_stack_inode_nbytes(dst, blocks);
461 }
462 }
463 if (S_ISLNK(src->st_mode))
464 btrfs_set_stack_inode_nbytes(dst, src->st_size + 1);
465
466 return 0;
467 }
468
469 static int directory_select(const struct direct *entry)
470 {
471 if ((strncmp(entry->d_name, ".", entry->d_reclen) == 0) ||
472 (strncmp(entry->d_name, "..", entry->d_reclen) == 0))
473 return 0;
474 else
475 return 1;
476 }
477
478 static void free_namelist(struct direct **files, int count)
479 {
480 int i;
481
482 if (count < 0)
483 return;
484
485 for (i = 0; i < count; ++i)
486 free(files[i]);
487 free(files);
488 }
489
490 static u64 calculate_dir_inode_size(char *dirname)
491 {
492 int count, i;
493 struct direct **files, *cur_file;
494 u64 dir_inode_size = 0;
495
496 count = scandir(dirname, &files, directory_select, NULL);
497
498 for (i = 0; i < count; i++) {
499 cur_file = files[i];
500 dir_inode_size += strlen(cur_file->d_name);
501 }
502
503 free_namelist(files, count);
504
505 dir_inode_size *= 2;
506 return dir_inode_size;
507 }
508
509 static int add_inode_items(struct btrfs_trans_handle *trans,
510 struct btrfs_root *root,
511 struct stat *st, char *name,
512 u64 self_objectid, ino_t parent_inum,
513 int dir_index_cnt, struct btrfs_inode_item *inode_ret)
514 {
515 int ret;
516 struct btrfs_key inode_key;
517 struct btrfs_inode_item btrfs_inode;
518 u64 objectid;
519 u64 inode_size = 0;
520
521 fill_inode_item(trans, root, &btrfs_inode, st);
522 objectid = self_objectid;
523
524 if (S_ISDIR(st->st_mode)) {
525 inode_size = calculate_dir_inode_size(name);
526 btrfs_set_stack_inode_size(&btrfs_inode, inode_size);
527 }
528
529 inode_key.objectid = objectid;
530 inode_key.offset = 0;
531 btrfs_set_key_type(&inode_key, BTRFS_INODE_ITEM_KEY);
532
533 ret = btrfs_insert_inode(trans, root, objectid, &btrfs_inode);
534
535 *inode_ret = btrfs_inode;
536 return ret;
537 }
538
539 static int add_xattr_item(struct btrfs_trans_handle *trans,
540 struct btrfs_root *root, u64 objectid,
541 const char *file_name)
542 {
543 int ret;
544 int cur_name_len;
545 char xattr_list[XATTR_LIST_MAX];
546 char *cur_name;
547 char cur_value[XATTR_SIZE_MAX];
548 char delimiter = '\0';
549 char *next_location = xattr_list;
550
551 ret = llistxattr(file_name, xattr_list, XATTR_LIST_MAX);
552 if (ret < 0) {
553 if(errno == ENOTSUP)
554 return 0;
555 fprintf(stderr, "get a list of xattr failed for %s\n",
556 file_name);
557 return ret;
558 }
559 if (ret == 0)
560 return ret;
561
562 cur_name = strtok(xattr_list, &delimiter);
563 while (cur_name != NULL) {
564 cur_name_len = strlen(cur_name);
565 next_location += cur_name_len + 1;
566
567 ret = getxattr(file_name, cur_name, cur_value, XATTR_SIZE_MAX);
568 if (ret < 0) {
569 if(errno == ENOTSUP)
570 return 0;
571 fprintf(stderr, "get a xattr value failed for %s attr %s\n",
572 file_name, cur_name);
573 return ret;
574 }
575
576 ret = btrfs_insert_xattr_item(trans, root, cur_name,
577 cur_name_len, cur_value,
578 ret, objectid);
579 if (ret) {
580 fprintf(stderr, "insert a xattr item failed for %s\n",
581 file_name);
582 }
583
584 cur_name = strtok(next_location, &delimiter);
585 }
586
587 return ret;
588 }
589
590 static int add_symbolic_link(struct btrfs_trans_handle *trans,
591 struct btrfs_root *root,
592 u64 objectid, const char *path_name)
593 {
594 int ret;
595 u64 sectorsize = root->sectorsize;
596 char *buf = malloc(sectorsize);
597
598 ret = readlink(path_name, buf, sectorsize);
599 if (ret <= 0) {
600 fprintf(stderr, "readlink failed for %s\n", path_name);
601 goto fail;
602 }
603 if (ret >= sectorsize) {
604 fprintf(stderr, "symlink too long for %s\n", path_name);
605 ret = -1;
606 goto fail;
607 }
608
609 buf[ret] = '\0'; /* readlink does not do it for us */
610 ret = btrfs_insert_inline_extent(trans, root, objectid, 0,
611 buf, ret + 1);
612 fail:
613 free(buf);
614 return ret;
615 }
616
617 static int add_file_items(struct btrfs_trans_handle *trans,
618 struct btrfs_root *root,
619 struct btrfs_inode_item *btrfs_inode, u64 objectid,
620 ino_t parent_inum, struct stat *st,
621 const char *path_name, int out_fd)
622 {
623 int ret = -1;
624 ssize_t ret_read;
625 u64 bytes_read = 0;
626 struct btrfs_key key;
627 int blocks;
628 u32 sectorsize = root->sectorsize;
629 u64 first_block = 0;
630 u64 file_pos = 0;
631 u64 cur_bytes;
632 u64 total_bytes;
633 struct extent_buffer *eb = NULL;
634 int fd;
635
636 if (st->st_size == 0)
637 return 0;
638
639 fd = open(path_name, O_RDONLY);
640 if (fd == -1) {
641 fprintf(stderr, "%s open failed\n", path_name);
642 return ret;
643 }
644
645 blocks = st->st_size / sectorsize;
646 if (st->st_size % sectorsize)
647 blocks += 1;
648
649 if (st->st_size <= BTRFS_MAX_INLINE_DATA_SIZE(root)) {
650 char *buffer = malloc(st->st_size);
651 ret_read = pread64(fd, buffer, st->st_size, bytes_read);
652 if (ret_read == -1) {
653 fprintf(stderr, "%s read failed\n", path_name);
654 free(buffer);
655 goto end;
656 }
657
658 ret = btrfs_insert_inline_extent(trans, root, objectid, 0,
659 buffer, st->st_size);
660 free(buffer);
661 goto end;
662 }
663
664 /* round up our st_size to the FS blocksize */
665 total_bytes = (u64)blocks * sectorsize;
666
667 /*
668 * do our IO in extent buffers so it can work
669 * against any raid type
670 */
671 eb = calloc(1, sizeof(*eb) + sectorsize);
672 if (!eb) {
673 ret = -ENOMEM;
674 goto end;
675 }
676
677 again:
678
679 /*
680 * keep our extent size at 1MB max, this makes it easier to work inside
681 * the tiny block groups created during mkfs
682 */
683 cur_bytes = min(total_bytes, 1024ULL * 1024);
684 ret = btrfs_reserve_extent(trans, root, cur_bytes, 0, 0, (u64)-1,
685 &key, 1);
686 if (ret)
687 goto end;
688
689 first_block = key.objectid;
690 bytes_read = 0;
691
692 while (bytes_read < cur_bytes) {
693
694 memset(eb->data, 0, sectorsize);
695
696 ret_read = pread64(fd, eb->data, sectorsize, file_pos + bytes_read);
697 if (ret_read == -1) {
698 fprintf(stderr, "%s read failed\n", path_name);
699 goto end;
700 }
701
702 eb->start = first_block + bytes_read;
703 eb->len = sectorsize;
704
705 /*
706 * we're doing the csum before we record the extent, but
707 * that's ok
708 */
709 ret = btrfs_csum_file_block(trans, root->fs_info->csum_root,
710 first_block + bytes_read + sectorsize,
711 first_block + bytes_read,
712 eb->data, sectorsize);
713 if (ret)
714 goto end;
715
716 ret = write_and_map_eb(trans, root, eb);
717 if (ret) {
718 fprintf(stderr, "output file write failed\n");
719 goto end;
720 }
721
722 bytes_read += sectorsize;
723 }
724
725 if (bytes_read) {
726 ret = btrfs_record_file_extent(trans, root, objectid, btrfs_inode,
727 file_pos, first_block, cur_bytes);
728 if (ret)
729 goto end;
730
731 }
732
733 file_pos += cur_bytes;
734 total_bytes -= cur_bytes;
735
736 if (total_bytes)
737 goto again;
738
739 end:
740 free(eb);
741 close(fd);
742 return ret;
743 }
744
745 static char *make_path(char *dir, char *name)
746 {
747 char *path;
748
749 path = malloc(strlen(dir) + strlen(name) + 2);
750 if (!path)
751 return NULL;
752 strcpy(path, dir);
753 if (dir[strlen(dir) - 1] != '/')
754 strcat(path, "/");
755 strcat(path, name);
756 return path;
757 }
758
759 static int traverse_directory(struct btrfs_trans_handle *trans,
760 struct btrfs_root *root, char *dir_name,
761 struct directory_name_entry *dir_head, int out_fd)
762 {
763 int ret = 0;
764
765 struct btrfs_inode_item cur_inode;
766 struct btrfs_inode_item *inode_item;
767 int count, i, dir_index_cnt;
768 struct direct **files;
769 struct stat st;
770 struct directory_name_entry *dir_entry, *parent_dir_entry;
771 struct direct *cur_file;
772 ino_t parent_inum, cur_inum;
773 ino_t highest_inum = 0;
774 char *parent_dir_name;
775 char real_path[PATH_MAX];
776 struct btrfs_path path;
777 struct extent_buffer *leaf;
778 struct btrfs_key root_dir_key;
779 u64 root_dir_inode_size = 0;
780
781 /* Add list for source directory */
782 dir_entry = malloc(sizeof(struct directory_name_entry));
783 dir_entry->dir_name = dir_name;
784 dir_entry->path = realpath(dir_name, real_path);
785 if (!dir_entry->path) {
786 fprintf(stderr, "get directory real path error\n");
787 ret = -1;
788 goto fail_no_dir;
789 }
790
791 parent_inum = highest_inum + BTRFS_FIRST_FREE_OBJECTID;
792 dir_entry->inum = parent_inum;
793 list_add_tail(&dir_entry->list, &dir_head->list);
794
795 btrfs_init_path(&path);
796
797 root_dir_key.objectid = btrfs_root_dirid(&root->root_item);
798 root_dir_key.offset = 0;
799 btrfs_set_key_type(&root_dir_key, BTRFS_INODE_ITEM_KEY);
800 ret = btrfs_lookup_inode(trans, root, &path, &root_dir_key, 1);
801 if (ret) {
802 fprintf(stderr, "root dir lookup error\n");
803 goto fail_no_dir;
804 }
805
806 leaf = path.nodes[0];
807 inode_item = btrfs_item_ptr(leaf, path.slots[0],
808 struct btrfs_inode_item);
809
810 root_dir_inode_size = calculate_dir_inode_size(dir_name);
811 btrfs_set_inode_size(leaf, inode_item, root_dir_inode_size);
812 btrfs_mark_buffer_dirty(leaf);
813
814 btrfs_release_path(&path);
815
816 do {
817 parent_dir_entry = list_entry(dir_head->list.next,
818 struct directory_name_entry,
819 list);
820 list_del(&parent_dir_entry->list);
821
822 parent_inum = parent_dir_entry->inum;
823 parent_dir_name = parent_dir_entry->dir_name;
824 if (chdir(parent_dir_entry->path)) {
825 fprintf(stderr, "chdir error for %s\n",
826 parent_dir_name);
827 ret = -1;
828 goto fail_no_files;
829 }
830
831 count = scandir(parent_dir_entry->path, &files,
832 directory_select, NULL);
833 if (count == -1)
834 {
835 fprintf(stderr, "scandir for %s failed: %s\n",
836 parent_dir_name, strerror (errno));
837 ret = -1;
838 goto fail;
839 }
840
841 for (i = 0; i < count; i++) {
842 cur_file = files[i];
843
844 if (lstat(cur_file->d_name, &st) == -1) {
845 fprintf(stderr, "lstat failed for file %s\n",
846 cur_file->d_name);
847 ret = -1;
848 goto fail;
849 }
850
851 cur_inum = st.st_ino;
852 ret = add_directory_items(trans, root,
853 cur_inum, parent_inum,
854 cur_file->d_name,
855 &st, &dir_index_cnt);
856 if (ret) {
857 fprintf(stderr, "add_directory_items failed\n");
858 goto fail;
859 }
860
861 ret = add_inode_items(trans, root, &st,
862 cur_file->d_name, cur_inum,
863 parent_inum, dir_index_cnt,
864 &cur_inode);
865 if (ret == -EEXIST) {
866 BUG_ON(st.st_nlink <= 1);
867 continue;
868 }
869 if (ret) {
870 fprintf(stderr, "add_inode_items failed\n");
871 goto fail;
872 }
873
874 ret = add_xattr_item(trans, root,
875 cur_inum, cur_file->d_name);
876 if (ret) {
877 fprintf(stderr, "add_xattr_item failed\n");
878 if(ret != -ENOTSUP)
879 goto fail;
880 }
881
882 if (S_ISDIR(st.st_mode)) {
883 dir_entry = malloc(sizeof(struct directory_name_entry));
884 dir_entry->dir_name = cur_file->d_name;
885 dir_entry->path = make_path(parent_dir_entry->path,
886 cur_file->d_name);
887 dir_entry->inum = cur_inum;
888 list_add_tail(&dir_entry->list, &dir_head->list);
889 } else if (S_ISREG(st.st_mode)) {
890 ret = add_file_items(trans, root, &cur_inode,
891 cur_inum, parent_inum, &st,
892 cur_file->d_name, out_fd);
893 if (ret) {
894 fprintf(stderr, "add_file_items failed\n");
895 goto fail;
896 }
897 } else if (S_ISLNK(st.st_mode)) {
898 ret = add_symbolic_link(trans, root,
899 cur_inum, cur_file->d_name);
900 if (ret) {
901 fprintf(stderr, "add_symbolic_link failed\n");
902 goto fail;
903 }
904 }
905 }
906
907 free_namelist(files, count);
908 free(parent_dir_entry);
909
910 index_cnt = 2;
911
912 } while (!list_empty(&dir_head->list));
913
914 out:
915 return !!ret;
916 fail:
917 free_namelist(files, count);
918 fail_no_files:
919 free(parent_dir_entry);
920 goto out;
921 fail_no_dir:
922 free(dir_entry);
923 goto out;
924 }
925
926 static int open_target(char *output_name)
927 {
928 int output_fd;
929 output_fd = open(output_name, O_CREAT | O_RDWR | O_TRUNC,
930 S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH);
931
932 return output_fd;
933 }
934
935 static int create_chunks(struct btrfs_trans_handle *trans,
936 struct btrfs_root *root, u64 num_of_meta_chunks,
937 u64 size_of_data,
938 struct mkfs_allocation *allocation)
939 {
940 u64 chunk_start;
941 u64 chunk_size;
942 u64 meta_type = BTRFS_BLOCK_GROUP_METADATA;
943 u64 data_type = BTRFS_BLOCK_GROUP_DATA;
944 u64 minimum_data_chunk_size = 8 * 1024 * 1024;
945 u64 i;
946 int ret;
947
948 for (i = 0; i < num_of_meta_chunks; i++) {
949 ret = btrfs_alloc_chunk(trans, root->fs_info->extent_root,
950 &chunk_start, &chunk_size, meta_type);
951 BUG_ON(ret);
952 ret = btrfs_make_block_group(trans, root->fs_info->extent_root, 0,
953 meta_type, BTRFS_FIRST_CHUNK_TREE_OBJECTID,
954 chunk_start, chunk_size);
955 allocation->metadata += chunk_size;
956 BUG_ON(ret);
957 set_extent_dirty(&root->fs_info->free_space_cache,
958 chunk_start, chunk_start + chunk_size - 1, 0);
959 }
960
961 if (size_of_data < minimum_data_chunk_size)
962 size_of_data = minimum_data_chunk_size;
963
964 ret = btrfs_alloc_data_chunk(trans, root->fs_info->extent_root,
965 &chunk_start, size_of_data, data_type);
966 BUG_ON(ret);
967 ret = btrfs_make_block_group(trans, root->fs_info->extent_root, 0,
968 data_type, BTRFS_FIRST_CHUNK_TREE_OBJECTID,
969 chunk_start, size_of_data);
970 allocation->data += size_of_data;
971 BUG_ON(ret);
972 set_extent_dirty(&root->fs_info->free_space_cache,
973 chunk_start, chunk_start + size_of_data - 1, 0);
974 return ret;
975 }
976
977 static int make_image(char *source_dir, struct btrfs_root *root, int out_fd)
978 {
979 int ret;
980 struct btrfs_trans_handle *trans;
981
982 struct stat root_st;
983
984 struct directory_name_entry dir_head;
985
986 struct directory_name_entry *dir_entry = NULL;
987
988 ret = lstat(source_dir, &root_st);
989 if (ret) {
990 fprintf(stderr, "unable to lstat the %s\n", source_dir);
991 goto out;
992 }
993
994 INIT_LIST_HEAD(&dir_head.list);
995
996 trans = btrfs_start_transaction(root, 1);
997 ret = traverse_directory(trans, root, source_dir, &dir_head, out_fd);
998 if (ret) {
999 fprintf(stderr, "unable to traverse_directory\n");
1000 goto fail;
1001 }
1002 btrfs_commit_transaction(trans, root);
1003
1004 if (verbose)
1005 printf("Making image is completed.\n");
1006 return 0;
1007 fail:
1008 while (!list_empty(&dir_head.list)) {
1009 dir_entry = list_entry(dir_head.list.next,
1010 struct directory_name_entry, list);
1011 list_del(&dir_entry->list);
1012 free(dir_entry);
1013 }
1014 out:
1015 fprintf(stderr, "Making image is aborted.\n");
1016 return -1;
1017 }
1018
1019 /*
1020 * This ignores symlinks with unreadable targets and subdirs that can't
1021 * be read. It's a best-effort to give a rough estimate of the size of
1022 * a subdir. It doesn't guarantee that prepopulating btrfs from this
1023 * tree won't still run out of space.
1024 *
1025 * The rounding up to 4096 is questionable. Previous code used du -B 4096.
1026 */
1027 static u64 global_total_size;
1028 static int ftw_add_entry_size(const char *fpath, const struct stat *st,
1029 int type)
1030 {
1031 if (type == FTW_F || type == FTW_D)
1032 global_total_size += round_up(st->st_size, 4096);
1033
1034 return 0;
1035 }
1036
1037 static u64 size_sourcedir(char *dir_name, u64 sectorsize,
1038 u64 *num_of_meta_chunks_ret, u64 *size_of_data_ret)
1039 {
1040 u64 dir_size = 0;
1041 u64 total_size = 0;
1042 int ret;
1043 u64 default_chunk_size = 8 * 1024 * 1024; /* 8MB */
1044 u64 allocated_meta_size = 8 * 1024 * 1024; /* 8MB */
1045 u64 allocated_total_size = 20 * 1024 * 1024; /* 20MB */
1046 u64 num_of_meta_chunks = 0;
1047 u64 num_of_data_chunks = 0;
1048 u64 num_of_allocated_meta_chunks =
1049 allocated_meta_size / default_chunk_size;
1050
1051 global_total_size = 0;
1052 ret = ftw(dir_name, ftw_add_entry_size, 10);
1053 dir_size = global_total_size;
1054 if (ret < 0) {
1055 fprintf(stderr, "ftw subdir walk of '%s' failed: %s\n",
1056 dir_name, strerror(errno));
1057 exit(1);
1058 }
1059
1060 num_of_data_chunks = (dir_size + default_chunk_size - 1) /
1061 default_chunk_size;
1062
1063 num_of_meta_chunks = (dir_size / 2) / default_chunk_size;
1064 if (((dir_size / 2) % default_chunk_size) != 0)
1065 num_of_meta_chunks++;
1066 if (num_of_meta_chunks <= num_of_allocated_meta_chunks)
1067 num_of_meta_chunks = 0;
1068 else
1069 num_of_meta_chunks -= num_of_allocated_meta_chunks;
1070
1071 total_size = allocated_total_size +
1072 (num_of_data_chunks * default_chunk_size) +
1073 (num_of_meta_chunks * default_chunk_size);
1074
1075 *num_of_meta_chunks_ret = num_of_meta_chunks;
1076 *size_of_data_ret = num_of_data_chunks * default_chunk_size;
1077 return total_size;
1078 }
1079
1080 static int zero_output_file(int out_fd, u64 size, u32 sectorsize)
1081 {
1082 int len = sectorsize;
1083 int loop_num = size / sectorsize;
1084 u64 location = 0;
1085 char *buf = malloc(len);
1086 int ret = 0, i;
1087 ssize_t written;
1088
1089 if (!buf)
1090 return -ENOMEM;
1091 memset(buf, 0, len);
1092 for (i = 0; i < loop_num; i++) {
1093 written = pwrite64(out_fd, buf, len, location);
1094 if (written != len)
1095 ret = -EIO;
1096 location += sectorsize;
1097 }
1098 free(buf);
1099 return ret;
1100 }
1101
1102 static int is_ssd(const char *file)
1103 {
1104 blkid_probe probe;
1105 char wholedisk[32];
1106 char sysfs_path[PATH_MAX];
1107 dev_t devno;
1108 int fd;
1109 char rotational;
1110 int ret;
1111
1112 probe = blkid_new_probe_from_filename(file);
1113 if (!probe)
1114 return 0;
1115
1116 /* Device number of this disk (possibly a partition) */
1117 devno = blkid_probe_get_devno(probe);
1118 if (!devno) {
1119 blkid_free_probe(probe);
1120 return 0;
1121 }
1122
1123 /* Get whole disk name (not full path) for this devno */
1124 ret = blkid_devno_to_wholedisk(devno,
1125 wholedisk, sizeof(wholedisk), NULL);
1126 if (ret) {
1127 blkid_free_probe(probe);
1128 return 0;
1129 }
1130
1131 snprintf(sysfs_path, PATH_MAX, "/sys/block/%s/queue/rotational",
1132 wholedisk);
1133
1134 blkid_free_probe(probe);
1135
1136 fd = open(sysfs_path, O_RDONLY);
1137 if (fd < 0) {
1138 return 0;
1139 }
1140
1141 if (read(fd, &rotational, sizeof(char)) < sizeof(char)) {
1142 close(fd);
1143 return 0;
1144 }
1145 close(fd);
1146
1147 return !atoi((const char *)&rotational);
1148 }
1149
1150 static void list_all_devices(struct btrfs_root *root)
1151 {
1152 struct btrfs_fs_devices *fs_devices;
1153 struct btrfs_device *device;
1154 int number_of_devices = 0;
1155 u64 total_block_count = 0;
1156
1157 fs_devices = root->fs_info->fs_devices;
1158
1159 list_for_each_entry(device, &fs_devices->devices, dev_list)
1160 number_of_devices++;
1161
1162 printf("Number of devices: %d\n", number_of_devices);
1163 /* printf("Total devices size: %10s\n", */
1164 /* pretty_size(total_block_count)); */
1165 printf("Devices:\n");
1166 printf(" ID SIZE PATH\n");
1167 list_for_each_entry_reverse(device, &fs_devices->devices, dev_list) {
1168 char dev_uuid[BTRFS_UUID_UNPARSED_SIZE];
1169
1170 uuid_unparse(device->uuid, dev_uuid);
1171 printf(" %3llu %10s %s\n",
1172 device->devid,
1173 pretty_size(device->total_bytes),
1174 device->name);
1175 total_block_count += device->total_bytes;
1176 }
1177
1178 printf("\n");
1179 }
1180
1181 static int is_temp_block_group(struct extent_buffer *node,
1182 struct btrfs_block_group_item *bgi,
1183 u64 data_profile, u64 meta_profile,
1184 u64 sys_profile)
1185 {
1186 u64 flag = btrfs_disk_block_group_flags(node, bgi);
1187 u64 flag_type = flag & BTRFS_BLOCK_GROUP_TYPE_MASK;
1188 u64 flag_profile = flag & BTRFS_BLOCK_GROUP_PROFILE_MASK;
1189 u64 used = btrfs_disk_block_group_used(node, bgi);
1190
1191 /*
1192 * Chunks meets all the following conditions is a temp chunk
1193 * 1) Empty chunk
1194 * Temp chunk is always empty.
1195 *
1196 * 2) profile dismatch with mkfs profile.
1197 * Temp chunk is always in SINGLE
1198 *
1199 * 3) Size differs with mkfs_alloc
1200 * Special case for SINGLE/SINGLE btrfs.
1201 * In that case, temp data chunk and real data chunk are always empty.
1202 * So we need to use mkfs_alloc to be sure which chunk is the newly
1203 * allocated.
1204 *
1205 * Normally, new chunk size is equal to mkfs one (One chunk)
1206 * If it has multiple chunks, we just refuse to delete any one.
1207 * As they are all single, so no real problem will happen.
1208 * So only use condition 1) and 2) to judge them.
1209 */
1210 if (used != 0)
1211 return 0;
1212 switch (flag_type) {
1213 case BTRFS_BLOCK_GROUP_DATA:
1214 case BTRFS_BLOCK_GROUP_DATA | BTRFS_BLOCK_GROUP_METADATA:
1215 data_profile &= BTRFS_BLOCK_GROUP_PROFILE_MASK;
1216 if (flag_profile != data_profile)
1217 return 1;
1218 break;
1219 case BTRFS_BLOCK_GROUP_METADATA:
1220 meta_profile &= BTRFS_BLOCK_GROUP_PROFILE_MASK;
1221 if (flag_profile != meta_profile)
1222 return 1;
1223 break;
1224 case BTRFS_BLOCK_GROUP_SYSTEM:
1225 sys_profile &= BTRFS_BLOCK_GROUP_PROFILE_MASK;
1226 if (flag_profile != sys_profile)
1227 return 1;
1228 break;
1229 }
1230 return 0;
1231 }
1232
1233 /* Note: if current is a block group, it will skip it anyway */
1234 static int next_block_group(struct btrfs_root *root,
1235 struct btrfs_path *path)
1236 {
1237 struct btrfs_key key;
1238 int ret = 0;
1239
1240 while (1) {
1241 ret = btrfs_next_item(root, path);
1242 if (ret)
1243 goto out;
1244
1245 btrfs_item_key_to_cpu(path->nodes[0], &key, path->slots[0]);
1246 if (key.type == BTRFS_BLOCK_GROUP_ITEM_KEY)
1247 goto out;
1248 }
1249 out:
1250 return ret;
1251 }
1252
1253 /* This function will cleanup */
1254 static int cleanup_temp_chunks(struct btrfs_fs_info *fs_info,
1255 struct mkfs_allocation *alloc,
1256 u64 data_profile, u64 meta_profile,
1257 u64 sys_profile)
1258 {
1259 struct btrfs_trans_handle *trans = NULL;
1260 struct btrfs_block_group_item *bgi;
1261 struct btrfs_root *root = fs_info->extent_root;
1262 struct btrfs_key key;
1263 struct btrfs_key found_key;
1264 struct btrfs_path *path;
1265 int ret = 0;
1266
1267 path = btrfs_alloc_path();
1268 if (!path) {
1269 ret = -ENOMEM;
1270 goto out;
1271 }
1272
1273 trans = btrfs_start_transaction(root, 1);
1274
1275 key.objectid = 0;
1276 key.type = BTRFS_BLOCK_GROUP_ITEM_KEY;
1277 key.offset = 0;
1278
1279 while (1) {
1280 /*
1281 * as the rest of the loop may modify the tree, we need to
1282 * start a new search each time.
1283 */
1284 ret = btrfs_search_slot(trans, root, &key, path, 0, 0);
1285 if (ret < 0)
1286 goto out;
1287
1288 btrfs_item_key_to_cpu(path->nodes[0], &found_key,
1289 path->slots[0]);
1290 if (found_key.objectid < key.objectid)
1291 goto out;
1292 if (found_key.type != BTRFS_BLOCK_GROUP_ITEM_KEY) {
1293 ret = next_block_group(root, path);
1294 if (ret < 0)
1295 goto out;
1296 if (ret > 0) {
1297 ret = 0;
1298 goto out;
1299 }
1300 btrfs_item_key_to_cpu(path->nodes[0], &found_key,
1301 path->slots[0]);
1302 }
1303
1304 bgi = btrfs_item_ptr(path->nodes[0], path->slots[0],
1305 struct btrfs_block_group_item);
1306 if (is_temp_block_group(path->nodes[0], bgi,
1307 data_profile, meta_profile,
1308 sys_profile)) {
1309 ret = btrfs_free_block_group(trans, fs_info,
1310 found_key.objectid, found_key.offset);
1311 if (ret < 0)
1312 goto out;
1313 }
1314 btrfs_release_path(path);
1315 key.objectid = found_key.objectid + found_key.offset;
1316 }
1317 out:
1318 if (trans)
1319 btrfs_commit_transaction(trans, root);
1320 btrfs_free_path(path);
1321 return ret;
1322 }
1323
1324 int main(int ac, char **av)
1325 {
1326 char *file;
1327 struct btrfs_root *root;
1328 struct btrfs_trans_handle *trans;
1329 char *label = NULL;
1330 u64 block_count = 0;
1331 u64 dev_block_count = 0;
1332 u64 blocks[7];
1333 u64 alloc_start = 0;
1334 u64 metadata_profile = 0;
1335 u64 data_profile = 0;
1336 u32 nodesize = max_t(u32, sysconf(_SC_PAGESIZE),
1337 BTRFS_MKFS_DEFAULT_NODE_SIZE);
1338 u32 sectorsize = 4096;
1339 u32 stripesize = 4096;
1340 int zero_end = 1;
1341 int fd;
1342 int ret;
1343 int i;
1344 int mixed = 0;
1345 int nodesize_forced = 0;
1346 int data_profile_opt = 0;
1347 int metadata_profile_opt = 0;
1348 int discard = 1;
1349 int ssd = 0;
1350 int force_overwrite = 0;
1351 char *source_dir = NULL;
1352 int source_dir_set = 0;
1353 u64 num_of_meta_chunks = 0;
1354 u64 size_of_data = 0;
1355 u64 source_dir_size = 0;
1356 int dev_cnt = 0;
1357 int saved_optind;
1358 char fs_uuid[BTRFS_UUID_UNPARSED_SIZE] = { 0 };
1359 u64 features = BTRFS_MKFS_DEFAULT_FEATURES;
1360 struct mkfs_allocation allocation = { 0 };
1361 struct btrfs_mkfs_config mkfs_cfg;
1362
1363 while(1) {
1364 int c;
1365 static const struct option long_options[] = {
1366 { "alloc-start", required_argument, NULL, 'A'},
1367 { "byte-count", required_argument, NULL, 'b' },
1368 { "force", no_argument, NULL, 'f' },
1369 { "leafsize", required_argument, NULL, 'l' },
1370 { "label", required_argument, NULL, 'L'},
1371 { "metadata", required_argument, NULL, 'm' },
1372 { "mixed", no_argument, NULL, 'M' },
1373 { "nodesize", required_argument, NULL, 'n' },
1374 { "sectorsize", required_argument, NULL, 's' },
1375 { "data", required_argument, NULL, 'd' },
1376 { "version", no_argument, NULL, 'V' },
1377 { "rootdir", required_argument, NULL, 'r' },
1378 { "nodiscard", no_argument, NULL, 'K' },
1379 { "features", required_argument, NULL, 'O' },
1380 { "uuid", required_argument, NULL, 'U' },
1381 { "quiet", 0, NULL, 'q' },
1382 { "help", no_argument, NULL, GETOPT_VAL_HELP },
1383 { NULL, 0, NULL, 0}
1384 };
1385
1386 c = getopt_long(ac, av, "A:b:fl:n:s:m:d:L:O:r:U:VMKq",
1387 long_options, NULL);
1388 if (c < 0)
1389 break;
1390 switch(c) {
1391 case 'A':
1392 alloc_start = parse_size(optarg);
1393 break;
1394 case 'f':
1395 force_overwrite = 1;
1396 break;
1397 case 'd':
1398 data_profile = parse_profile(optarg);
1399 data_profile_opt = 1;
1400 break;
1401 case 'l':
1402 fprintf(stderr,
1403 "WARNING: --leafsize is deprecated, use --nodesize\n");
1404 case 'n':
1405 nodesize = parse_size(optarg);
1406 nodesize_forced = 1;
1407 break;
1408 case 'L':
1409 label = parse_label(optarg);
1410 break;
1411 case 'm':
1412 metadata_profile = parse_profile(optarg);
1413 metadata_profile_opt = 1;
1414 break;
1415 case 'M':
1416 mixed = 1;
1417 break;
1418 case 'O': {
1419 char *orig = strdup(optarg);
1420 char *tmp = orig;
1421
1422 tmp = btrfs_parse_fs_features(tmp, &features);
1423 if (tmp) {
1424 fprintf(stderr,
1425 "Unrecognized filesystem feature '%s'\n",
1426 tmp);
1427 free(orig);
1428 exit(1);
1429 }
1430 free(orig);
1431 if (features & BTRFS_FEATURE_LIST_ALL) {
1432 btrfs_list_all_fs_features(0);
1433 exit(0);
1434 }
1435 break;
1436 }
1437 case 's':
1438 sectorsize = parse_size(optarg);
1439 break;
1440 case 'b':
1441 block_count = parse_size(optarg);
1442 zero_end = 0;
1443 break;
1444 case 'V':
1445 print_version();
1446 break;
1447 case 'r':
1448 source_dir = optarg;
1449 source_dir_set = 1;
1450 break;
1451 case 'U':
1452 strncpy(fs_uuid, optarg,
1453 BTRFS_UUID_UNPARSED_SIZE - 1);
1454 break;
1455 case 'K':
1456 discard = 0;
1457 break;
1458 case 'q':
1459 verbose = 0;
1460 break;
1461 case GETOPT_VAL_HELP:
1462 default:
1463 print_usage(c != GETOPT_VAL_HELP);
1464 }
1465 }
1466
1467 sectorsize = max(sectorsize, (u32)sysconf(_SC_PAGESIZE));
1468 saved_optind = optind;
1469 dev_cnt = ac - optind;
1470 if (dev_cnt == 0)
1471 print_usage(1);
1472
1473 if (source_dir_set && dev_cnt > 1) {
1474 fprintf(stderr,
1475 "The -r option is limited to a single device\n");
1476 exit(1);
1477 }
1478
1479 if (*fs_uuid) {
1480 uuid_t dummy_uuid;
1481
1482 if (uuid_parse(fs_uuid, dummy_uuid) != 0) {
1483 fprintf(stderr, "could not parse UUID: %s\n", fs_uuid);
1484 exit(1);
1485 }
1486 if (!test_uuid_unique(fs_uuid)) {
1487 fprintf(stderr, "non-unique UUID: %s\n", fs_uuid);
1488 exit(1);
1489 }
1490 }
1491
1492 while (dev_cnt-- > 0) {
1493 file = av[optind++];
1494 if (is_block_device(file) == 1)
1495 if (test_dev_for_mkfs(file, force_overwrite))
1496 exit(1);
1497 }
1498
1499 optind = saved_optind;
1500 dev_cnt = ac - optind;
1501
1502 file = av[optind++];
1503 ssd = is_ssd(file);
1504
1505 if (mixed) {
1506 if (verbose)
1507 printf("Forcing mixed metadata/data groups\n");
1508 }
1509
1510 /*
1511 * Set default profiles according to number of added devices.
1512 * For mixed groups defaults are single/single.
1513 */
1514 if (!mixed) {
1515 if (!metadata_profile_opt) {
1516 if (dev_cnt == 1 && ssd && verbose)
1517 printf("Detected a SSD, turning off metadata "
1518 "duplication. Mkfs with -m dup if you want to "
1519 "force metadata duplication.\n");
1520
1521 metadata_profile = (dev_cnt > 1) ?
1522 BTRFS_BLOCK_GROUP_RAID1 : (ssd) ?
1523 0: BTRFS_BLOCK_GROUP_DUP;
1524 }
1525 if (!data_profile_opt) {
1526 data_profile = (dev_cnt > 1) ?
1527 BTRFS_BLOCK_GROUP_RAID0 : 0; /* raid0 or single */
1528 }
1529 } else {
1530 u32 best_nodesize = max_t(u32, sysconf(_SC_PAGESIZE), sectorsize);
1531
1532 if (metadata_profile_opt || data_profile_opt) {
1533 if (metadata_profile != data_profile) {
1534 fprintf(stderr,
1535 "ERROR: With mixed block groups data and metadata profiles must be the same\n");
1536 exit(1);
1537 }
1538 }
1539
1540 if (!nodesize_forced)
1541 nodesize = best_nodesize;
1542 }
1543 if (btrfs_check_nodesize(nodesize, sectorsize,
1544 features))
1545 exit(1);
1546
1547 /* Check device/block_count after the nodesize is determined */
1548 if (block_count && block_count < btrfs_min_dev_size(nodesize)) {
1549 fprintf(stderr,
1550 "Size '%llu' is too small to make a usable filesystem\n",
1551 block_count);
1552 fprintf(stderr,
1553 "Minimum size for btrfs filesystem is %llu\n",
1554 btrfs_min_dev_size(nodesize));
1555 exit(1);
1556 }
1557 for (i = saved_optind; i < saved_optind + dev_cnt; i++) {
1558 char *path;
1559
1560 path = av[i];
1561 ret = test_minimum_size(path, nodesize);
1562 if (ret < 0) {
1563 fprintf(stderr, "Failed to check size for '%s': %s\n",
1564 path, strerror(-ret));
1565 exit (1);
1566 }
1567 if (ret > 0) {
1568 fprintf(stderr,
1569 "'%s' is too small to make a usable filesystem\n",
1570 path);
1571 fprintf(stderr,
1572 "Minimum size for each btrfs device is %llu.\n",
1573 btrfs_min_dev_size(nodesize));
1574 exit(1);
1575 }
1576 }
1577 ret = test_num_disk_vs_raid(metadata_profile, data_profile,
1578 dev_cnt, mixed);
1579 if (ret)
1580 exit(1);
1581
1582 /* if we are here that means all devs are good to btrfsify */
1583 if (verbose) {
1584 printf("%s\n", PACKAGE_STRING);
1585 printf("See %s for more information.\n\n", PACKAGE_URL);
1586 }
1587
1588 dev_cnt--;
1589
1590 if (!source_dir_set) {
1591 /*
1592 * open without O_EXCL so that the problem should not
1593 * occur by the following processing.
1594 * (btrfs_register_one_device() fails if O_EXCL is on)
1595 */
1596 fd = open(file, O_RDWR);
1597 if (fd < 0) {
1598 fprintf(stderr, "unable to open %s: %s\n", file,
1599 strerror(errno));
1600 exit(1);
1601 }
1602 ret = btrfs_prepare_device(fd, file, zero_end, &dev_block_count,
1603 block_count, discard);
1604 if (ret) {
1605 close(fd);
1606 exit(1);
1607 }
1608 if (block_count && block_count > dev_block_count) {
1609 fprintf(stderr, "%s is smaller than requested size\n", file);
1610 exit(1);
1611 }
1612 } else {
1613 fd = open_target(file);
1614 if (fd < 0) {
1615 fprintf(stderr, "unable to open the %s\n", file);
1616 exit(1);
1617 }
1618
1619 source_dir_size = size_sourcedir(source_dir, sectorsize,
1620 &num_of_meta_chunks, &size_of_data);
1621 if(block_count < source_dir_size)
1622 block_count = source_dir_size;
1623 ret = zero_output_file(fd, block_count, sectorsize);
1624 if (ret) {
1625 fprintf(stderr, "unable to zero the output file\n");
1626 exit(1);
1627 }
1628 /* our "device" is the new image file */
1629 dev_block_count = block_count;
1630 }
1631
1632 /* To create the first block group and chunk 0 in make_btrfs */
1633 if (dev_block_count < BTRFS_MKFS_SYSTEM_GROUP_SIZE) {
1634 fprintf(stderr, "device is too small to make filesystem\n");
1635 exit(1);
1636 }
1637
1638 blocks[0] = BTRFS_SUPER_INFO_OFFSET;
1639 for (i = 1; i < 7; i++) {
1640 blocks[i] = BTRFS_SUPER_INFO_OFFSET + 1024 * 1024 +
1641 nodesize * i;
1642 }
1643
1644 if (group_profile_max_safe_loss(metadata_profile) <
1645 group_profile_max_safe_loss(data_profile)){
1646 fprintf(stderr,
1647 "WARNING: metatdata has lower redundancy than data!\n\n");
1648 }
1649
1650 /*
1651 * FS features that can be set by other means than -O
1652 * just set the bit here
1653 */
1654 if (mixed)
1655 features |= BTRFS_FEATURE_INCOMPAT_MIXED_GROUPS;
1656
1657 if ((data_profile | metadata_profile) &
1658 (BTRFS_BLOCK_GROUP_RAID5 | BTRFS_BLOCK_GROUP_RAID6)) {
1659 features |= BTRFS_FEATURE_INCOMPAT_RAID56;
1660 }
1661
1662 mkfs_cfg.label = label;
1663 mkfs_cfg.fs_uuid = fs_uuid;
1664 memcpy(mkfs_cfg.blocks, blocks, sizeof(blocks));
1665 mkfs_cfg.num_bytes = dev_block_count;
1666 mkfs_cfg.nodesize = nodesize;
1667 mkfs_cfg.sectorsize = sectorsize;
1668 mkfs_cfg.stripesize = stripesize;
1669 mkfs_cfg.features = features;
1670
1671 ret = make_btrfs(fd, &mkfs_cfg);
1672 if (ret) {
1673 fprintf(stderr, "error during mkfs: %s\n", strerror(-ret));
1674 exit(1);
1675 }
1676
1677 root = open_ctree(file, 0, OPEN_CTREE_WRITES);
1678 if (!root) {
1679 fprintf(stderr, "Open ctree failed\n");
1680 close(fd);
1681 exit(1);
1682 }
1683 root->fs_info->alloc_start = alloc_start;
1684
1685 ret = create_metadata_block_groups(root, mixed, &allocation);
1686 if (ret) {
1687 fprintf(stderr, "failed to create default block groups\n");
1688 exit(1);
1689 }
1690
1691 trans = btrfs_start_transaction(root, 1);
1692 if (!trans) {
1693 fprintf(stderr, "failed to start transaction\n");
1694 exit(1);
1695 }
1696
1697 ret = create_data_block_groups(trans, root, mixed, &allocation);
1698 if (ret) {
1699 fprintf(stderr, "failed to create default data block groups\n");
1700 exit(1);
1701 }
1702
1703 ret = make_root_dir(trans, root, &allocation);
1704 if (ret) {
1705 fprintf(stderr, "failed to setup the root directory\n");
1706 exit(1);
1707 }
1708
1709 btrfs_commit_transaction(trans, root);
1710
1711 trans = btrfs_start_transaction(root, 1);
1712 if (!trans) {
1713 fprintf(stderr, "failed to start transaction\n");
1714 exit(1);
1715 }
1716
1717 if (is_block_device(file) == 1)
1718 btrfs_register_one_device(file);
1719
1720 if (dev_cnt == 0)
1721 goto raid_groups;
1722
1723 while (dev_cnt-- > 0) {
1724 file = av[optind++];
1725
1726 /*
1727 * open without O_EXCL so that the problem should not
1728 * occur by the following processing.
1729 * (btrfs_register_one_device() fails if O_EXCL is on)
1730 */
1731 fd = open(file, O_RDWR);
1732 if (fd < 0) {
1733 fprintf(stderr, "unable to open %s: %s\n", file,
1734 strerror(errno));
1735 exit(1);
1736 }
1737 ret = btrfs_device_already_in_root(root, fd,
1738 BTRFS_SUPER_INFO_OFFSET);
1739 if (ret) {
1740 fprintf(stderr, "skipping duplicate device %s in FS\n",
1741 file);
1742 close(fd);
1743 continue;
1744 }
1745 ret = btrfs_prepare_device(fd, file, zero_end, &dev_block_count,
1746 block_count, discard);
1747 if (ret) {
1748 close(fd);
1749 exit(1);
1750 }
1751
1752 ret = btrfs_add_to_fsid(trans, root, fd, file, dev_block_count,
1753 sectorsize, sectorsize, sectorsize);
1754 BUG_ON(ret);
1755 if (verbose >= 2) {
1756 struct btrfs_device *device;
1757
1758 device = container_of(root->fs_info->fs_devices->devices.next,
1759 struct btrfs_device, dev_list);
1760 printf("adding device %s id %llu\n", file,
1761 (unsigned long long)device->devid);
1762 }
1763
1764 if (is_block_device(file) == 1)
1765 btrfs_register_one_device(file);
1766 }
1767
1768 raid_groups:
1769 if (!source_dir_set) {
1770 ret = create_raid_groups(trans, root, data_profile,
1771 metadata_profile, mixed, &allocation);
1772 BUG_ON(ret);
1773 }
1774
1775 ret = create_data_reloc_tree(trans, root);
1776 BUG_ON(ret);
1777
1778 btrfs_commit_transaction(trans, root);
1779
1780 if (source_dir_set) {
1781 trans = btrfs_start_transaction(root, 1);
1782 ret = create_chunks(trans, root,
1783 num_of_meta_chunks, size_of_data,
1784 &allocation);
1785 BUG_ON(ret);
1786 btrfs_commit_transaction(trans, root);
1787
1788 ret = make_image(source_dir, root, fd);
1789 BUG_ON(ret);
1790 }
1791 ret = cleanup_temp_chunks(root->fs_info, &allocation, data_profile,
1792 metadata_profile, metadata_profile);
1793 if (ret < 0) {
1794 fprintf(stderr, "Failed to cleanup temporary chunks\n");
1795 goto out;
1796 }
1797
1798 if (verbose) {
1799 char features_buf[64];
1800
1801 printf("Label: %s\n", label);
1802 printf("UUID: %s\n", fs_uuid);
1803 printf("Node size: %u\n", nodesize);
1804 printf("Sector size: %u\n", sectorsize);
1805 printf("Filesystem size: %s\n",
1806 pretty_size(btrfs_super_total_bytes(root->fs_info->super_copy)));
1807 printf("Block group profiles:\n");
1808 if (allocation.data)
1809 printf(" Data: %-8s %16s\n",
1810 btrfs_group_profile_str(data_profile),
1811 pretty_size(allocation.data));
1812 if (allocation.metadata)
1813 printf(" Metadata: %-8s %16s\n",
1814 btrfs_group_profile_str(metadata_profile),
1815 pretty_size(allocation.metadata));
1816 if (allocation.mixed)
1817 printf(" Data+Metadata: %-8s %16s\n",
1818 btrfs_group_profile_str(data_profile),
1819 pretty_size(allocation.mixed));
1820 printf(" System: %-8s %16s\n",
1821 btrfs_group_profile_str(metadata_profile),
1822 pretty_size(allocation.system));
1823 printf("SSD detected: %s\n", ssd ? "yes" : "no");
1824 btrfs_parse_features_to_string(features_buf, features);
1825 printf("Incompat features: %s", features_buf);
1826 printf("\n");
1827
1828 list_all_devices(root);
1829 }
1830
1831 out:
1832 ret = close_ctree(root);
1833 BUG_ON(ret);
1834 btrfs_close_all_devices();
1835 free(label);
1836 return 0;
1837 }
(deprecated) Btrfs progs developments and patch integration