2 * This program is free software; you can redistribute it and/or
3 * modify it under the terms of the GNU General Public
4 * License v2 as published by the Free Software Foundation.
6 * This program is distributed in the hope that it will be useful,
7 * but WITHOUT ANY WARRANTY; without even the implied warranty of
8 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
9 * General Public License for more details.
11 * You should have received a copy of the GNU General Public
12 * License along with this program; if not, write to the
13 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
14 * Boston, MA 021110-1307, USA.
19 #include "kerncompat.h"
21 #include "transaction.h"
23 #include "convert/common.h"
24 #include "convert/source-ext2.h"
27 * Open Ext2fs in readonly mode, read block allocation bitmap and
28 * inode bitmap into memory.
30 static int ext2_open_fs(struct btrfs_convert_context *cctx, const char *name)
37 ret = ext2fs_open(name, 0, 0, 0, unix_io_manager, &ext2_fs);
39 fprintf(stderr, "ext2fs_open: %s\n", error_message(ret));
43 * We need to know exactly the used space, some RO compat flags like
44 * BIGALLOC will affect how used space is present.
45 * So we need manuall check any unsupported RO compat flags
47 ro_feature = ext2_fs->super->s_feature_ro_compat;
48 if (ro_feature & ~EXT2_LIB_FEATURE_RO_COMPAT_SUPP) {
50 "unsupported RO features detected: %x, abort convert to avoid possible corruption",
51 ro_feature & ~EXT2_LIB_FEATURE_COMPAT_SUPP);
54 ret = ext2fs_read_inode_bitmap(ext2_fs);
56 fprintf(stderr, "ext2fs_read_inode_bitmap: %s\n",
60 ret = ext2fs_read_block_bitmap(ext2_fs);
62 fprintf(stderr, "ext2fs_read_block_bitmap: %s\n",
67 * search each block group for a free inode. this set up
68 * uninit block/inode bitmaps appropriately.
71 while (ino <= ext2_fs->super->s_inodes_count) {
73 ext2fs_new_inode(ext2_fs, ino, 0, NULL, &foo);
74 ino += EXT2_INODES_PER_GROUP(ext2_fs->super);
77 if (!(ext2_fs->super->s_feature_incompat &
78 EXT2_FEATURE_INCOMPAT_FILETYPE)) {
79 error("filetype feature is missing");
83 cctx->fs_data = ext2_fs;
84 cctx->blocksize = ext2_fs->blocksize;
85 cctx->block_count = ext2_fs->super->s_blocks_count;
86 cctx->total_bytes = ext2_fs->blocksize * ext2_fs->super->s_blocks_count;
87 cctx->volume_name = strndup(ext2_fs->super->s_volume_name, 16);
88 cctx->first_data_block = ext2_fs->super->s_first_data_block;
89 cctx->inodes_count = ext2_fs->super->s_inodes_count;
90 cctx->free_inodes_count = ext2_fs->super->s_free_inodes_count;
93 ext2fs_close(ext2_fs);
97 static int __ext2_add_one_block(ext2_filsys fs, char *bitmap,
98 unsigned long group_nr, struct cache_tree *used)
100 unsigned long offset;
104 offset = fs->super->s_first_data_block;
105 offset /= EXT2FS_CLUSTER_RATIO(fs);
106 offset += group_nr * EXT2_CLUSTERS_PER_GROUP(fs->super);
107 for (i = 0; i < EXT2_CLUSTERS_PER_GROUP(fs->super); i++) {
108 if ((i + offset) >= ext2fs_blocks_count(fs->super))
111 if (ext2fs_test_bit(i, bitmap)) {
114 start = (i + offset) * EXT2FS_CLUSTER_RATIO(fs);
115 start *= fs->blocksize;
116 ret = add_merge_cache_extent(used, start,
126 * Read all used ext2 space into cctx->used cache tree
128 static int ext2_read_used_space(struct btrfs_convert_context *cctx)
130 ext2_filsys fs = (ext2_filsys)cctx->fs_data;
131 blk64_t blk_itr = EXT2FS_B2C(fs, fs->super->s_first_data_block);
132 struct cache_tree *used_tree = &cctx->used;
133 char *block_bitmap = NULL;
138 block_nbytes = EXT2_CLUSTERS_PER_GROUP(fs->super) / 8;
139 /* Shouldn't happen */
140 BUG_ON(!fs->block_map);
142 block_bitmap = malloc(block_nbytes);
146 for (i = 0; i < fs->group_desc_count; i++) {
147 ret = ext2fs_get_block_bitmap_range(fs->block_map, blk_itr,
148 block_nbytes * 8, block_bitmap);
150 error("fail to get bitmap from ext2, %s",
154 ret = __ext2_add_one_block(fs, block_bitmap, i, used_tree);
156 error("fail to build used space tree, %s",
160 blk_itr += EXT2_CLUSTERS_PER_GROUP(fs->super);
167 static void ext2_close_fs(struct btrfs_convert_context *cctx)
169 if (cctx->volume_name) {
170 free(cctx->volume_name);
171 cctx->volume_name = NULL;
173 ext2fs_close(cctx->fs_data);
176 static u8 ext2_filetype_conversion_table[EXT2_FT_MAX] = {
177 [EXT2_FT_UNKNOWN] = BTRFS_FT_UNKNOWN,
178 [EXT2_FT_REG_FILE] = BTRFS_FT_REG_FILE,
179 [EXT2_FT_DIR] = BTRFS_FT_DIR,
180 [EXT2_FT_CHRDEV] = BTRFS_FT_CHRDEV,
181 [EXT2_FT_BLKDEV] = BTRFS_FT_BLKDEV,
182 [EXT2_FT_FIFO] = BTRFS_FT_FIFO,
183 [EXT2_FT_SOCK] = BTRFS_FT_SOCK,
184 [EXT2_FT_SYMLINK] = BTRFS_FT_SYMLINK,
187 static int ext2_dir_iterate_proc(ext2_ino_t dir, int entry,
188 struct ext2_dir_entry *dirent,
189 int offset, int blocksize,
190 char *buf,void *priv_data)
195 char dotdot[] = "..";
196 struct dir_iterate_data *idata = (struct dir_iterate_data *)priv_data;
199 name_len = dirent->name_len & 0xFF;
201 objectid = dirent->inode + INO_OFFSET;
202 if (!strncmp(dirent->name, dotdot, name_len)) {
204 BUG_ON(idata->parent != 0);
205 idata->parent = objectid;
209 if (dirent->inode < EXT2_GOOD_OLD_FIRST_INO)
212 file_type = dirent->name_len >> 8;
213 BUG_ON(file_type > EXT2_FT_SYMLINK);
215 ret = convert_insert_dirent(idata->trans, idata->root, dirent->name,
216 name_len, idata->objectid, objectid,
217 ext2_filetype_conversion_table[file_type],
218 idata->index_cnt, idata->inode);
220 idata->errcode = ret;
228 static int ext2_create_dir_entries(struct btrfs_trans_handle *trans,
229 struct btrfs_root *root, u64 objectid,
230 struct btrfs_inode_item *btrfs_inode,
231 ext2_filsys ext2_fs, ext2_ino_t ext2_ino)
235 struct dir_iterate_data data = {
238 .inode = btrfs_inode,
239 .objectid = objectid,
245 err = ext2fs_dir_iterate2(ext2_fs, ext2_ino, 0, NULL,
246 ext2_dir_iterate_proc, &data);
250 if (ret == 0 && data.parent == objectid) {
251 ret = btrfs_insert_inode_ref(trans, root, "..", 2,
252 objectid, objectid, 0);
256 fprintf(stderr, "ext2fs_dir_iterate2: %s\n", error_message(err));
260 static int ext2_block_iterate_proc(ext2_filsys fs, blk_t *blocknr,
261 e2_blkcnt_t blockcnt, blk_t ref_block,
262 int ref_offset, void *priv_data)
265 struct blk_iterate_data *idata;
266 idata = (struct blk_iterate_data *)priv_data;
267 ret = block_iterate_proc(*blocknr, blockcnt, idata);
269 idata->errcode = ret;
276 * traverse file's data blocks, record these data blocks as file extents.
278 static int ext2_create_file_extents(struct btrfs_trans_handle *trans,
279 struct btrfs_root *root, u64 objectid,
280 struct btrfs_inode_item *btrfs_inode,
281 ext2_filsys ext2_fs, ext2_ino_t ext2_ino,
282 int datacsum, int packing)
288 u32 sectorsize = root->sectorsize;
289 u64 inode_size = btrfs_stack_inode_size(btrfs_inode);
290 struct blk_iterate_data data;
292 init_blk_iterate_data(&data, trans, root, btrfs_inode, objectid,
295 err = ext2fs_block_iterate2(ext2_fs, ext2_ino, BLOCK_FLAG_DATA_ONLY,
296 NULL, ext2_block_iterate_proc, &data);
302 if (packing && data.first_block == 0 && data.num_blocks > 0 &&
303 inode_size <= BTRFS_MAX_INLINE_DATA_SIZE(root)) {
304 u64 num_bytes = data.num_blocks * sectorsize;
305 u64 disk_bytenr = data.disk_block * sectorsize;
308 buffer = malloc(num_bytes);
311 ret = read_disk_extent(root, disk_bytenr, num_bytes, buffer);
314 if (num_bytes > inode_size)
315 num_bytes = inode_size;
316 ret = btrfs_insert_inline_extent(trans, root, objectid,
317 0, buffer, num_bytes);
320 nbytes = btrfs_stack_inode_nbytes(btrfs_inode) + num_bytes;
321 btrfs_set_stack_inode_nbytes(btrfs_inode, nbytes);
322 } else if (data.num_blocks > 0) {
323 ret = record_file_blocks(&data, data.first_block,
324 data.disk_block, data.num_blocks);
328 data.first_block += data.num_blocks;
329 last_block = (inode_size + sectorsize - 1) / sectorsize;
330 if (last_block > data.first_block) {
331 ret = record_file_blocks(&data, data.first_block, 0,
332 last_block - data.first_block);
338 fprintf(stderr, "ext2fs_block_iterate2: %s\n", error_message(err));
342 static int ext2_create_symbol_link(struct btrfs_trans_handle *trans,
343 struct btrfs_root *root, u64 objectid,
344 struct btrfs_inode_item *btrfs_inode,
345 ext2_filsys ext2_fs, ext2_ino_t ext2_ino,
346 struct ext2_inode *ext2_inode)
350 u64 inode_size = btrfs_stack_inode_size(btrfs_inode);
351 if (ext2fs_inode_data_blocks(ext2_fs, ext2_inode)) {
352 btrfs_set_stack_inode_size(btrfs_inode, inode_size + 1);
353 ret = ext2_create_file_extents(trans, root, objectid,
354 btrfs_inode, ext2_fs, ext2_ino, 1, 1);
355 btrfs_set_stack_inode_size(btrfs_inode, inode_size);
359 pathname = (char *)&(ext2_inode->i_block[0]);
360 BUG_ON(pathname[inode_size] != 0);
361 ret = btrfs_insert_inline_extent(trans, root, objectid, 0,
362 pathname, inode_size + 1);
363 btrfs_set_stack_inode_nbytes(btrfs_inode, inode_size + 1);
368 * Following xattr/acl related codes are based on codes in
369 * fs/ext3/xattr.c and fs/ext3/acl.c
371 #define EXT2_XATTR_BHDR(ptr) ((struct ext2_ext_attr_header *)(ptr))
372 #define EXT2_XATTR_BFIRST(ptr) \
373 ((struct ext2_ext_attr_entry *)(EXT2_XATTR_BHDR(ptr) + 1))
374 #define EXT2_XATTR_IHDR(inode) \
375 ((struct ext2_ext_attr_header *) ((void *)(inode) + \
376 EXT2_GOOD_OLD_INODE_SIZE + (inode)->i_extra_isize))
377 #define EXT2_XATTR_IFIRST(inode) \
378 ((struct ext2_ext_attr_entry *) ((void *)EXT2_XATTR_IHDR(inode) + \
379 sizeof(EXT2_XATTR_IHDR(inode)->h_magic)))
381 static int ext2_xattr_check_names(struct ext2_ext_attr_entry *entry,
384 struct ext2_ext_attr_entry *next;
386 while (!EXT2_EXT_IS_LAST_ENTRY(entry)) {
387 next = EXT2_EXT_ATTR_NEXT(entry);
388 if ((void *)next >= end)
395 static int ext2_xattr_check_block(const char *buf, size_t size)
398 struct ext2_ext_attr_header *header = EXT2_XATTR_BHDR(buf);
400 if (header->h_magic != EXT2_EXT_ATTR_MAGIC ||
401 header->h_blocks != 1)
403 error = ext2_xattr_check_names(EXT2_XATTR_BFIRST(buf), buf + size);
407 static int ext2_xattr_check_entry(struct ext2_ext_attr_entry *entry,
410 size_t value_size = entry->e_value_size;
412 if (entry->e_value_block != 0 || value_size > size ||
413 entry->e_value_offs + value_size > size)
418 static inline int ext2_acl_count(size_t size)
421 size -= sizeof(ext2_acl_header);
422 s = size - 4 * sizeof(ext2_acl_entry_short);
424 if (size % sizeof(ext2_acl_entry_short))
426 return size / sizeof(ext2_acl_entry_short);
428 if (s % sizeof(ext2_acl_entry))
430 return s / sizeof(ext2_acl_entry) + 4;
434 static inline size_t acl_ea_size(int count)
436 return sizeof(acl_ea_header) + count * sizeof(acl_ea_entry);
439 static int ext2_acl_to_xattr(void *dst, const void *src,
440 size_t dst_size, size_t src_size)
443 const void *end = src + src_size;
444 acl_ea_header *ext_acl = (acl_ea_header *)dst;
445 acl_ea_entry *dst_entry = ext_acl->a_entries;
446 ext2_acl_entry *src_entry;
448 if (src_size < sizeof(ext2_acl_header))
450 if (((ext2_acl_header *)src)->a_version !=
451 cpu_to_le32(EXT2_ACL_VERSION))
453 src += sizeof(ext2_acl_header);
454 count = ext2_acl_count(src_size);
458 BUG_ON(dst_size < acl_ea_size(count));
459 ext_acl->a_version = cpu_to_le32(ACL_EA_VERSION);
460 for (i = 0; i < count; i++, dst_entry++) {
461 src_entry = (ext2_acl_entry *)src;
462 if (src + sizeof(ext2_acl_entry_short) > end)
464 dst_entry->e_tag = src_entry->e_tag;
465 dst_entry->e_perm = src_entry->e_perm;
466 switch (le16_to_cpu(src_entry->e_tag)) {
471 src += sizeof(ext2_acl_entry_short);
472 dst_entry->e_id = cpu_to_le32(ACL_UNDEFINED_ID);
476 src += sizeof(ext2_acl_entry);
479 dst_entry->e_id = src_entry->e_id;
492 static char *xattr_prefix_table[] = {
494 [2] = "system.posix_acl_access",
495 [3] = "system.posix_acl_default",
500 static int ext2_copy_single_xattr(struct btrfs_trans_handle *trans,
501 struct btrfs_root *root, u64 objectid,
502 struct ext2_ext_attr_entry *entry,
503 const void *data, u32 datalen)
508 void *databuf = NULL;
509 char namebuf[XATTR_NAME_MAX + 1];
511 name_index = entry->e_name_index;
512 if (name_index >= ARRAY_SIZE(xattr_prefix_table) ||
513 xattr_prefix_table[name_index] == NULL)
515 name_len = strlen(xattr_prefix_table[name_index]) +
517 if (name_len >= sizeof(namebuf))
520 if (name_index == 2 || name_index == 3) {
521 size_t bufsize = acl_ea_size(ext2_acl_count(datalen));
522 databuf = malloc(bufsize);
525 ret = ext2_acl_to_xattr(databuf, data, bufsize, datalen);
531 strncpy(namebuf, xattr_prefix_table[name_index], XATTR_NAME_MAX);
532 strncat(namebuf, EXT2_EXT_ATTR_NAME(entry), entry->e_name_len);
533 if (name_len + datalen > BTRFS_LEAF_DATA_SIZE(root) -
534 sizeof(struct btrfs_item) - sizeof(struct btrfs_dir_item)) {
535 fprintf(stderr, "skip large xattr on inode %Lu name %.*s\n",
536 objectid - INO_OFFSET, name_len, namebuf);
539 ret = btrfs_insert_xattr_item(trans, root, namebuf, name_len,
540 data, datalen, objectid);
546 static int ext2_copy_extended_attrs(struct btrfs_trans_handle *trans,
547 struct btrfs_root *root, u64 objectid,
548 struct btrfs_inode_item *btrfs_inode,
549 ext2_filsys ext2_fs, ext2_ino_t ext2_ino)
555 u32 block_size = ext2_fs->blocksize;
556 u32 inode_size = EXT2_INODE_SIZE(ext2_fs->super);
557 struct ext2_inode_large *ext2_inode;
558 struct ext2_ext_attr_entry *entry;
561 char inode_buf[EXT2_GOOD_OLD_INODE_SIZE];
563 if (inode_size <= EXT2_GOOD_OLD_INODE_SIZE) {
564 ext2_inode = (struct ext2_inode_large *)inode_buf;
566 ext2_inode = (struct ext2_inode_large *)malloc(inode_size);
570 err = ext2fs_read_inode_full(ext2_fs, ext2_ino, (void *)ext2_inode,
573 fprintf(stderr, "ext2fs_read_inode_full: %s\n",
579 if (ext2_ino > ext2_fs->super->s_first_ino &&
580 inode_size > EXT2_GOOD_OLD_INODE_SIZE) {
581 if (EXT2_GOOD_OLD_INODE_SIZE +
582 ext2_inode->i_extra_isize > inode_size) {
586 if (ext2_inode->i_extra_isize != 0 &&
587 EXT2_XATTR_IHDR(ext2_inode)->h_magic ==
588 EXT2_EXT_ATTR_MAGIC) {
594 void *end = (void *)ext2_inode + inode_size;
595 entry = EXT2_XATTR_IFIRST(ext2_inode);
596 total = end - (void *)entry;
597 ret = ext2_xattr_check_names(entry, end);
600 while (!EXT2_EXT_IS_LAST_ENTRY(entry)) {
601 ret = ext2_xattr_check_entry(entry, total);
604 data = (void *)EXT2_XATTR_IFIRST(ext2_inode) +
606 datalen = entry->e_value_size;
607 ret = ext2_copy_single_xattr(trans, root, objectid,
608 entry, data, datalen);
611 entry = EXT2_EXT_ATTR_NEXT(entry);
615 if (ext2_inode->i_file_acl == 0)
618 buffer = malloc(block_size);
623 err = ext2fs_read_ext_attr(ext2_fs, ext2_inode->i_file_acl, buffer);
625 fprintf(stderr, "ext2fs_read_ext_attr: %s\n",
630 ret = ext2_xattr_check_block(buffer, block_size);
634 entry = EXT2_XATTR_BFIRST(buffer);
635 while (!EXT2_EXT_IS_LAST_ENTRY(entry)) {
636 ret = ext2_xattr_check_entry(entry, block_size);
639 data = buffer + entry->e_value_offs;
640 datalen = entry->e_value_size;
641 ret = ext2_copy_single_xattr(trans, root, objectid,
642 entry, data, datalen);
645 entry = EXT2_EXT_ATTR_NEXT(entry);
649 if ((void *)ext2_inode != inode_buf)
654 #define MKDEV(ma, mi) (((ma) << MINORBITS) | (mi))
656 static inline dev_t old_decode_dev(u16 val)
658 return MKDEV((val >> 8) & 255, val & 255);
661 static inline dev_t new_decode_dev(u32 dev)
663 unsigned major = (dev & 0xfff00) >> 8;
664 unsigned minor = (dev & 0xff) | ((dev >> 12) & 0xfff00);
665 return MKDEV(major, minor);
668 static void ext2_copy_inode_item(struct btrfs_inode_item *dst,
669 struct ext2_inode *src, u32 blocksize)
671 btrfs_set_stack_inode_generation(dst, 1);
672 btrfs_set_stack_inode_sequence(dst, 0);
673 btrfs_set_stack_inode_transid(dst, 1);
674 btrfs_set_stack_inode_size(dst, src->i_size);
675 btrfs_set_stack_inode_nbytes(dst, 0);
676 btrfs_set_stack_inode_block_group(dst, 0);
677 btrfs_set_stack_inode_nlink(dst, src->i_links_count);
678 btrfs_set_stack_inode_uid(dst, src->i_uid | (src->i_uid_high << 16));
679 btrfs_set_stack_inode_gid(dst, src->i_gid | (src->i_gid_high << 16));
680 btrfs_set_stack_inode_mode(dst, src->i_mode);
681 btrfs_set_stack_inode_rdev(dst, 0);
682 btrfs_set_stack_inode_flags(dst, 0);
683 btrfs_set_stack_timespec_sec(&dst->atime, src->i_atime);
684 btrfs_set_stack_timespec_nsec(&dst->atime, 0);
685 btrfs_set_stack_timespec_sec(&dst->ctime, src->i_ctime);
686 btrfs_set_stack_timespec_nsec(&dst->ctime, 0);
687 btrfs_set_stack_timespec_sec(&dst->mtime, src->i_mtime);
688 btrfs_set_stack_timespec_nsec(&dst->mtime, 0);
689 btrfs_set_stack_timespec_sec(&dst->otime, 0);
690 btrfs_set_stack_timespec_nsec(&dst->otime, 0);
692 if (S_ISDIR(src->i_mode)) {
693 btrfs_set_stack_inode_size(dst, 0);
694 btrfs_set_stack_inode_nlink(dst, 1);
696 if (S_ISREG(src->i_mode)) {
697 btrfs_set_stack_inode_size(dst, (u64)src->i_size_high << 32 |
700 if (!S_ISREG(src->i_mode) && !S_ISDIR(src->i_mode) &&
701 !S_ISLNK(src->i_mode)) {
702 if (src->i_block[0]) {
703 btrfs_set_stack_inode_rdev(dst,
704 old_decode_dev(src->i_block[0]));
706 btrfs_set_stack_inode_rdev(dst,
707 new_decode_dev(src->i_block[1]));
710 memset(&dst->reserved, 0, sizeof(dst->reserved));
712 static int ext2_check_state(struct btrfs_convert_context *cctx)
714 ext2_filsys fs = cctx->fs_data;
716 if (!(fs->super->s_state & EXT2_VALID_FS))
718 else if (fs->super->s_state & EXT2_ERROR_FS)
724 /* EXT2_*_FL to BTRFS_INODE_FLAG_* stringification helper */
725 #define COPY_ONE_EXT2_FLAG(flags, ext2_inode, name) ({ \
726 if (ext2_inode->i_flags & EXT2_##name##_FL) \
727 flags |= BTRFS_INODE_##name; \
731 * Convert EXT2_*_FL to corresponding BTRFS_INODE_* flags
733 * Only a subset of EXT_*_FL is supported in btrfs.
735 static void ext2_convert_inode_flags(struct btrfs_inode_item *dst,
736 struct ext2_inode *src)
740 COPY_ONE_EXT2_FLAG(flags, src, APPEND);
741 COPY_ONE_EXT2_FLAG(flags, src, SYNC);
742 COPY_ONE_EXT2_FLAG(flags, src, IMMUTABLE);
743 COPY_ONE_EXT2_FLAG(flags, src, NODUMP);
744 COPY_ONE_EXT2_FLAG(flags, src, NOATIME);
745 COPY_ONE_EXT2_FLAG(flags, src, DIRSYNC);
746 btrfs_set_stack_inode_flags(dst, flags);
750 * copy a single inode. do all the required works, such as cloning
751 * inode item, creating file extents and creating directory entries.
753 static int ext2_copy_single_inode(struct btrfs_trans_handle *trans,
754 struct btrfs_root *root, u64 objectid,
755 ext2_filsys ext2_fs, ext2_ino_t ext2_ino,
756 struct ext2_inode *ext2_inode,
757 int datacsum, int packing, int noxattr)
760 struct btrfs_inode_item btrfs_inode;
762 if (ext2_inode->i_links_count == 0)
765 ext2_copy_inode_item(&btrfs_inode, ext2_inode, ext2_fs->blocksize);
766 if (!datacsum && S_ISREG(ext2_inode->i_mode)) {
767 u32 flags = btrfs_stack_inode_flags(&btrfs_inode) |
768 BTRFS_INODE_NODATASUM;
769 btrfs_set_stack_inode_flags(&btrfs_inode, flags);
771 ext2_convert_inode_flags(&btrfs_inode, ext2_inode);
773 switch (ext2_inode->i_mode & S_IFMT) {
775 ret = ext2_create_file_extents(trans, root, objectid,
776 &btrfs_inode, ext2_fs, ext2_ino, datacsum, packing);
779 ret = ext2_create_dir_entries(trans, root, objectid,
780 &btrfs_inode, ext2_fs, ext2_ino);
783 ret = ext2_create_symbol_link(trans, root, objectid,
784 &btrfs_inode, ext2_fs, ext2_ino, ext2_inode);
794 ret = ext2_copy_extended_attrs(trans, root, objectid,
795 &btrfs_inode, ext2_fs, ext2_ino);
799 return btrfs_insert_inode(trans, root, objectid, &btrfs_inode);
803 * scan ext2's inode bitmap and copy all used inodes.
805 static int ext2_copy_inodes(struct btrfs_convert_context *cctx,
806 struct btrfs_root *root,
807 int datacsum, int packing, int noxattr, struct task_ctx *p)
809 ext2_filsys ext2_fs = cctx->fs_data;
812 ext2_inode_scan ext2_scan;
813 struct ext2_inode ext2_inode;
816 struct btrfs_trans_handle *trans;
818 trans = btrfs_start_transaction(root, 1);
821 err = ext2fs_open_inode_scan(ext2_fs, 0, &ext2_scan);
823 fprintf(stderr, "ext2fs_open_inode_scan: %s\n", error_message(err));
826 while (!(err = ext2fs_get_next_inode(ext2_scan, &ext2_ino,
831 /* skip special inode in ext2fs */
832 if (ext2_ino < EXT2_GOOD_OLD_FIRST_INO &&
833 ext2_ino != EXT2_ROOT_INO)
835 objectid = ext2_ino + INO_OFFSET;
836 ret = ext2_copy_single_inode(trans, root,
837 objectid, ext2_fs, ext2_ino,
838 &ext2_inode, datacsum, packing,
840 p->cur_copy_inodes++;
843 if (trans->blocks_used >= 4096) {
844 ret = btrfs_commit_transaction(trans, root);
846 trans = btrfs_start_transaction(root, 1);
851 fprintf(stderr, "ext2fs_get_next_inode: %s\n", error_message(err));
854 ret = btrfs_commit_transaction(trans, root);
856 ext2fs_close_inode_scan(ext2_scan);
861 const struct btrfs_convert_operations ext2_convert_ops = {
863 .open_fs = ext2_open_fs,
864 .read_used_space = ext2_read_used_space,
865 .copy_inodes = ext2_copy_inodes,
866 .close_fs = ext2_close_fs,
867 .check_state = ext2_check_state,
870 #endif /* BTRFSCONVERT_EXT2 */