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;
140 error("EXT2_CLUSTERS_PER_GROUP too small: %llu",
141 (unsigned long long)(EXT2_CLUSTERS_PER_GROUP(fs->super)));
145 block_bitmap = malloc(block_nbytes);
149 for (i = 0; i < fs->group_desc_count; i++) {
150 ret = ext2fs_get_block_bitmap_range(fs->block_map, blk_itr,
151 block_nbytes * 8, block_bitmap);
153 error("fail to get bitmap from ext2, %s",
157 ret = __ext2_add_one_block(fs, block_bitmap, i, used_tree);
159 error("fail to build used space tree, %s",
163 blk_itr += EXT2_CLUSTERS_PER_GROUP(fs->super);
170 static void ext2_close_fs(struct btrfs_convert_context *cctx)
172 if (cctx->volume_name) {
173 free(cctx->volume_name);
174 cctx->volume_name = NULL;
176 ext2fs_close(cctx->fs_data);
179 static u8 ext2_filetype_conversion_table[EXT2_FT_MAX] = {
180 [EXT2_FT_UNKNOWN] = BTRFS_FT_UNKNOWN,
181 [EXT2_FT_REG_FILE] = BTRFS_FT_REG_FILE,
182 [EXT2_FT_DIR] = BTRFS_FT_DIR,
183 [EXT2_FT_CHRDEV] = BTRFS_FT_CHRDEV,
184 [EXT2_FT_BLKDEV] = BTRFS_FT_BLKDEV,
185 [EXT2_FT_FIFO] = BTRFS_FT_FIFO,
186 [EXT2_FT_SOCK] = BTRFS_FT_SOCK,
187 [EXT2_FT_SYMLINK] = BTRFS_FT_SYMLINK,
190 static int ext2_dir_iterate_proc(ext2_ino_t dir, int entry,
191 struct ext2_dir_entry *dirent,
192 int offset, int blocksize,
193 char *buf,void *priv_data)
198 char dotdot[] = "..";
199 struct dir_iterate_data *idata = (struct dir_iterate_data *)priv_data;
202 name_len = dirent->name_len & 0xFF;
204 objectid = dirent->inode + INO_OFFSET;
205 if (!strncmp(dirent->name, dotdot, name_len)) {
207 BUG_ON(idata->parent != 0);
208 idata->parent = objectid;
212 if (dirent->inode < EXT2_GOOD_OLD_FIRST_INO)
215 file_type = dirent->name_len >> 8;
216 BUG_ON(file_type > EXT2_FT_SYMLINK);
218 ret = convert_insert_dirent(idata->trans, idata->root, dirent->name,
219 name_len, idata->objectid, objectid,
220 ext2_filetype_conversion_table[file_type],
221 idata->index_cnt, idata->inode);
223 idata->errcode = ret;
231 static int ext2_create_dir_entries(struct btrfs_trans_handle *trans,
232 struct btrfs_root *root, u64 objectid,
233 struct btrfs_inode_item *btrfs_inode,
234 ext2_filsys ext2_fs, ext2_ino_t ext2_ino)
238 struct dir_iterate_data data = {
241 .inode = btrfs_inode,
242 .objectid = objectid,
248 err = ext2fs_dir_iterate2(ext2_fs, ext2_ino, 0, NULL,
249 ext2_dir_iterate_proc, &data);
253 if (ret == 0 && data.parent == objectid) {
254 ret = btrfs_insert_inode_ref(trans, root, "..", 2,
255 objectid, objectid, 0);
259 fprintf(stderr, "ext2fs_dir_iterate2: %s\n", error_message(err));
263 static int ext2_block_iterate_proc(ext2_filsys fs, blk_t *blocknr,
264 e2_blkcnt_t blockcnt, blk_t ref_block,
265 int ref_offset, void *priv_data)
268 struct blk_iterate_data *idata;
269 idata = (struct blk_iterate_data *)priv_data;
270 ret = block_iterate_proc(*blocknr, blockcnt, idata);
272 idata->errcode = ret;
279 * traverse file's data blocks, record these data blocks as file extents.
281 static int ext2_create_file_extents(struct btrfs_trans_handle *trans,
282 struct btrfs_root *root, u64 objectid,
283 struct btrfs_inode_item *btrfs_inode,
284 ext2_filsys ext2_fs, ext2_ino_t ext2_ino,
291 u32 sectorsize = root->sectorsize;
292 u64 inode_size = btrfs_stack_inode_size(btrfs_inode);
293 struct blk_iterate_data data;
295 init_blk_iterate_data(&data, trans, root, btrfs_inode, objectid,
296 convert_flags & CONVERT_FLAG_DATACSUM);
298 err = ext2fs_block_iterate2(ext2_fs, ext2_ino, BLOCK_FLAG_DATA_ONLY,
299 NULL, ext2_block_iterate_proc, &data);
305 if ((convert_flags & CONVERT_FLAG_INLINE_DATA) && data.first_block == 0
306 && data.num_blocks > 0
307 && inode_size <= BTRFS_MAX_INLINE_DATA_SIZE(root)) {
308 u64 num_bytes = data.num_blocks * sectorsize;
309 u64 disk_bytenr = data.disk_block * sectorsize;
312 buffer = malloc(num_bytes);
315 ret = read_disk_extent(root, disk_bytenr, num_bytes, buffer);
318 if (num_bytes > inode_size)
319 num_bytes = inode_size;
320 ret = btrfs_insert_inline_extent(trans, root, objectid,
321 0, buffer, num_bytes);
324 nbytes = btrfs_stack_inode_nbytes(btrfs_inode) + num_bytes;
325 btrfs_set_stack_inode_nbytes(btrfs_inode, nbytes);
326 } else if (data.num_blocks > 0) {
327 ret = record_file_blocks(&data, data.first_block,
328 data.disk_block, data.num_blocks);
332 data.first_block += data.num_blocks;
333 last_block = (inode_size + sectorsize - 1) / sectorsize;
334 if (last_block > data.first_block) {
335 ret = record_file_blocks(&data, data.first_block, 0,
336 last_block - data.first_block);
342 fprintf(stderr, "ext2fs_block_iterate2: %s\n", error_message(err));
346 static int ext2_create_symlink(struct btrfs_trans_handle *trans,
347 struct btrfs_root *root, u64 objectid,
348 struct btrfs_inode_item *btrfs_inode,
349 ext2_filsys ext2_fs, ext2_ino_t ext2_ino,
350 struct ext2_inode *ext2_inode)
354 u64 inode_size = btrfs_stack_inode_size(btrfs_inode);
355 if (ext2fs_inode_data_blocks(ext2_fs, ext2_inode)) {
356 btrfs_set_stack_inode_size(btrfs_inode, inode_size + 1);
357 ret = ext2_create_file_extents(trans, root, objectid,
358 btrfs_inode, ext2_fs, ext2_ino,
359 CONVERT_FLAG_DATACSUM |
360 CONVERT_FLAG_INLINE_DATA);
361 btrfs_set_stack_inode_size(btrfs_inode, inode_size);
365 pathname = (char *)&(ext2_inode->i_block[0]);
366 BUG_ON(pathname[inode_size] != 0);
367 ret = btrfs_insert_inline_extent(trans, root, objectid, 0,
368 pathname, inode_size + 1);
369 btrfs_set_stack_inode_nbytes(btrfs_inode, inode_size + 1);
374 * Following xattr/acl related codes are based on codes in
375 * fs/ext3/xattr.c and fs/ext3/acl.c
377 #define EXT2_XATTR_BHDR(ptr) ((struct ext2_ext_attr_header *)(ptr))
378 #define EXT2_XATTR_BFIRST(ptr) \
379 ((struct ext2_ext_attr_entry *)(EXT2_XATTR_BHDR(ptr) + 1))
380 #define EXT2_XATTR_IHDR(inode) \
381 ((struct ext2_ext_attr_header *) ((void *)(inode) + \
382 EXT2_GOOD_OLD_INODE_SIZE + (inode)->i_extra_isize))
383 #define EXT2_XATTR_IFIRST(inode) \
384 ((struct ext2_ext_attr_entry *) ((void *)EXT2_XATTR_IHDR(inode) + \
385 sizeof(EXT2_XATTR_IHDR(inode)->h_magic)))
387 static int ext2_xattr_check_names(struct ext2_ext_attr_entry *entry,
390 struct ext2_ext_attr_entry *next;
392 while (!EXT2_EXT_IS_LAST_ENTRY(entry)) {
393 next = EXT2_EXT_ATTR_NEXT(entry);
394 if ((void *)next >= end)
401 static int ext2_xattr_check_block(const char *buf, size_t size)
404 struct ext2_ext_attr_header *header = EXT2_XATTR_BHDR(buf);
406 if (header->h_magic != EXT2_EXT_ATTR_MAGIC ||
407 header->h_blocks != 1)
409 error = ext2_xattr_check_names(EXT2_XATTR_BFIRST(buf), buf + size);
413 static int ext2_xattr_check_entry(struct ext2_ext_attr_entry *entry,
416 size_t value_size = entry->e_value_size;
418 if (entry->e_value_block != 0 || value_size > size ||
419 entry->e_value_offs + value_size > size)
424 static inline int ext2_acl_count(size_t size)
427 size -= sizeof(ext2_acl_header);
428 s = size - 4 * sizeof(ext2_acl_entry_short);
430 if (size % sizeof(ext2_acl_entry_short))
432 return size / sizeof(ext2_acl_entry_short);
434 if (s % sizeof(ext2_acl_entry))
436 return s / sizeof(ext2_acl_entry) + 4;
440 static inline size_t acl_ea_size(int count)
442 return sizeof(acl_ea_header) + count * sizeof(acl_ea_entry);
445 static int ext2_acl_to_xattr(void *dst, const void *src,
446 size_t dst_size, size_t src_size)
449 const void *end = src + src_size;
450 acl_ea_header *ext_acl = (acl_ea_header *)dst;
451 acl_ea_entry *dst_entry = ext_acl->a_entries;
452 ext2_acl_entry *src_entry;
454 if (src_size < sizeof(ext2_acl_header))
456 if (((ext2_acl_header *)src)->a_version !=
457 cpu_to_le32(EXT2_ACL_VERSION))
459 src += sizeof(ext2_acl_header);
460 count = ext2_acl_count(src_size);
464 BUG_ON(dst_size < acl_ea_size(count));
465 ext_acl->a_version = cpu_to_le32(ACL_EA_VERSION);
466 for (i = 0; i < count; i++, dst_entry++) {
467 src_entry = (ext2_acl_entry *)src;
468 if (src + sizeof(ext2_acl_entry_short) > end)
470 dst_entry->e_tag = src_entry->e_tag;
471 dst_entry->e_perm = src_entry->e_perm;
472 switch (le16_to_cpu(src_entry->e_tag)) {
477 src += sizeof(ext2_acl_entry_short);
478 dst_entry->e_id = cpu_to_le32(ACL_UNDEFINED_ID);
482 src += sizeof(ext2_acl_entry);
485 dst_entry->e_id = src_entry->e_id;
498 static char *xattr_prefix_table[] = {
500 [2] = "system.posix_acl_access",
501 [3] = "system.posix_acl_default",
506 static int ext2_copy_single_xattr(struct btrfs_trans_handle *trans,
507 struct btrfs_root *root, u64 objectid,
508 struct ext2_ext_attr_entry *entry,
509 const void *data, u32 datalen)
514 void *databuf = NULL;
515 char namebuf[XATTR_NAME_MAX + 1];
517 name_index = entry->e_name_index;
518 if (name_index >= ARRAY_SIZE(xattr_prefix_table) ||
519 xattr_prefix_table[name_index] == NULL)
521 name_len = strlen(xattr_prefix_table[name_index]) +
523 if (name_len >= sizeof(namebuf))
526 if (name_index == 2 || name_index == 3) {
527 size_t bufsize = acl_ea_size(ext2_acl_count(datalen));
528 databuf = malloc(bufsize);
531 ret = ext2_acl_to_xattr(databuf, data, bufsize, datalen);
537 strncpy(namebuf, xattr_prefix_table[name_index], XATTR_NAME_MAX);
538 strncat(namebuf, EXT2_EXT_ATTR_NAME(entry), entry->e_name_len);
539 if (name_len + datalen > BTRFS_LEAF_DATA_SIZE(root) -
540 sizeof(struct btrfs_item) - sizeof(struct btrfs_dir_item)) {
541 fprintf(stderr, "skip large xattr on inode %Lu name %.*s\n",
542 objectid - INO_OFFSET, name_len, namebuf);
545 ret = btrfs_insert_xattr_item(trans, root, namebuf, name_len,
546 data, datalen, objectid);
552 static int ext2_copy_extended_attrs(struct btrfs_trans_handle *trans,
553 struct btrfs_root *root, u64 objectid,
554 struct btrfs_inode_item *btrfs_inode,
555 ext2_filsys ext2_fs, ext2_ino_t ext2_ino)
561 u32 block_size = ext2_fs->blocksize;
562 u32 inode_size = EXT2_INODE_SIZE(ext2_fs->super);
563 struct ext2_inode_large *ext2_inode;
564 struct ext2_ext_attr_entry *entry;
567 char inode_buf[EXT2_GOOD_OLD_INODE_SIZE];
569 if (inode_size <= EXT2_GOOD_OLD_INODE_SIZE) {
570 ext2_inode = (struct ext2_inode_large *)inode_buf;
572 ext2_inode = (struct ext2_inode_large *)malloc(inode_size);
576 err = ext2fs_read_inode_full(ext2_fs, ext2_ino, (void *)ext2_inode,
579 fprintf(stderr, "ext2fs_read_inode_full: %s\n",
585 if (ext2_ino > ext2_fs->super->s_first_ino &&
586 inode_size > EXT2_GOOD_OLD_INODE_SIZE) {
587 if (EXT2_GOOD_OLD_INODE_SIZE +
588 ext2_inode->i_extra_isize > inode_size) {
592 if (ext2_inode->i_extra_isize != 0 &&
593 EXT2_XATTR_IHDR(ext2_inode)->h_magic ==
594 EXT2_EXT_ATTR_MAGIC) {
600 void *end = (void *)ext2_inode + inode_size;
601 entry = EXT2_XATTR_IFIRST(ext2_inode);
602 total = end - (void *)entry;
603 ret = ext2_xattr_check_names(entry, end);
606 while (!EXT2_EXT_IS_LAST_ENTRY(entry)) {
607 ret = ext2_xattr_check_entry(entry, total);
610 data = (void *)EXT2_XATTR_IFIRST(ext2_inode) +
612 datalen = entry->e_value_size;
613 ret = ext2_copy_single_xattr(trans, root, objectid,
614 entry, data, datalen);
617 entry = EXT2_EXT_ATTR_NEXT(entry);
621 if (ext2_inode->i_file_acl == 0)
624 buffer = malloc(block_size);
629 err = ext2fs_read_ext_attr(ext2_fs, ext2_inode->i_file_acl, buffer);
631 fprintf(stderr, "ext2fs_read_ext_attr: %s\n",
636 ret = ext2_xattr_check_block(buffer, block_size);
640 entry = EXT2_XATTR_BFIRST(buffer);
641 while (!EXT2_EXT_IS_LAST_ENTRY(entry)) {
642 ret = ext2_xattr_check_entry(entry, block_size);
645 data = buffer + entry->e_value_offs;
646 datalen = entry->e_value_size;
647 ret = ext2_copy_single_xattr(trans, root, objectid,
648 entry, data, datalen);
651 entry = EXT2_EXT_ATTR_NEXT(entry);
655 if ((void *)ext2_inode != inode_buf)
660 #define MKDEV(ma, mi) (((ma) << MINORBITS) | (mi))
662 static inline dev_t old_decode_dev(u16 val)
664 return MKDEV((val >> 8) & 255, val & 255);
667 static inline dev_t new_decode_dev(u32 dev)
669 unsigned major = (dev & 0xfff00) >> 8;
670 unsigned minor = (dev & 0xff) | ((dev >> 12) & 0xfff00);
671 return MKDEV(major, minor);
674 static void ext2_copy_inode_item(struct btrfs_inode_item *dst,
675 struct ext2_inode *src, u32 blocksize)
677 btrfs_set_stack_inode_generation(dst, 1);
678 btrfs_set_stack_inode_sequence(dst, 0);
679 btrfs_set_stack_inode_transid(dst, 1);
680 btrfs_set_stack_inode_size(dst, src->i_size);
681 btrfs_set_stack_inode_nbytes(dst, 0);
682 btrfs_set_stack_inode_block_group(dst, 0);
683 btrfs_set_stack_inode_nlink(dst, src->i_links_count);
684 btrfs_set_stack_inode_uid(dst, src->i_uid | (src->i_uid_high << 16));
685 btrfs_set_stack_inode_gid(dst, src->i_gid | (src->i_gid_high << 16));
686 btrfs_set_stack_inode_mode(dst, src->i_mode);
687 btrfs_set_stack_inode_rdev(dst, 0);
688 btrfs_set_stack_inode_flags(dst, 0);
689 btrfs_set_stack_timespec_sec(&dst->atime, src->i_atime);
690 btrfs_set_stack_timespec_nsec(&dst->atime, 0);
691 btrfs_set_stack_timespec_sec(&dst->ctime, src->i_ctime);
692 btrfs_set_stack_timespec_nsec(&dst->ctime, 0);
693 btrfs_set_stack_timespec_sec(&dst->mtime, src->i_mtime);
694 btrfs_set_stack_timespec_nsec(&dst->mtime, 0);
695 btrfs_set_stack_timespec_sec(&dst->otime, 0);
696 btrfs_set_stack_timespec_nsec(&dst->otime, 0);
698 if (S_ISDIR(src->i_mode)) {
699 btrfs_set_stack_inode_size(dst, 0);
700 btrfs_set_stack_inode_nlink(dst, 1);
702 if (S_ISREG(src->i_mode)) {
703 btrfs_set_stack_inode_size(dst, (u64)src->i_size_high << 32 |
706 if (!S_ISREG(src->i_mode) && !S_ISDIR(src->i_mode) &&
707 !S_ISLNK(src->i_mode)) {
708 if (src->i_block[0]) {
709 btrfs_set_stack_inode_rdev(dst,
710 old_decode_dev(src->i_block[0]));
712 btrfs_set_stack_inode_rdev(dst,
713 new_decode_dev(src->i_block[1]));
716 memset(&dst->reserved, 0, sizeof(dst->reserved));
718 static int ext2_check_state(struct btrfs_convert_context *cctx)
720 ext2_filsys fs = cctx->fs_data;
722 if (!(fs->super->s_state & EXT2_VALID_FS))
724 else if (fs->super->s_state & EXT2_ERROR_FS)
730 /* EXT2_*_FL to BTRFS_INODE_FLAG_* stringification helper */
731 #define COPY_ONE_EXT2_FLAG(flags, ext2_inode, name) ({ \
732 if (ext2_inode->i_flags & EXT2_##name##_FL) \
733 flags |= BTRFS_INODE_##name; \
737 * Convert EXT2_*_FL to corresponding BTRFS_INODE_* flags
739 * Only a subset of EXT_*_FL is supported in btrfs.
741 static void ext2_convert_inode_flags(struct btrfs_inode_item *dst,
742 struct ext2_inode *src)
746 COPY_ONE_EXT2_FLAG(flags, src, APPEND);
747 COPY_ONE_EXT2_FLAG(flags, src, SYNC);
748 COPY_ONE_EXT2_FLAG(flags, src, IMMUTABLE);
749 COPY_ONE_EXT2_FLAG(flags, src, NODUMP);
750 COPY_ONE_EXT2_FLAG(flags, src, NOATIME);
751 COPY_ONE_EXT2_FLAG(flags, src, DIRSYNC);
752 btrfs_set_stack_inode_flags(dst, flags);
756 * copy a single inode. do all the required works, such as cloning
757 * inode item, creating file extents and creating directory entries.
759 static int ext2_copy_single_inode(struct btrfs_trans_handle *trans,
760 struct btrfs_root *root, u64 objectid,
761 ext2_filsys ext2_fs, ext2_ino_t ext2_ino,
762 struct ext2_inode *ext2_inode,
766 struct btrfs_inode_item btrfs_inode;
768 if (ext2_inode->i_links_count == 0)
771 ext2_copy_inode_item(&btrfs_inode, ext2_inode, ext2_fs->blocksize);
772 if (!(convert_flags & CONVERT_FLAG_DATACSUM)
773 && S_ISREG(ext2_inode->i_mode)) {
774 u32 flags = btrfs_stack_inode_flags(&btrfs_inode) |
775 BTRFS_INODE_NODATASUM;
776 btrfs_set_stack_inode_flags(&btrfs_inode, flags);
778 ext2_convert_inode_flags(&btrfs_inode, ext2_inode);
780 switch (ext2_inode->i_mode & S_IFMT) {
782 ret = ext2_create_file_extents(trans, root, objectid,
783 &btrfs_inode, ext2_fs, ext2_ino, convert_flags);
786 ret = ext2_create_dir_entries(trans, root, objectid,
787 &btrfs_inode, ext2_fs, ext2_ino);
790 ret = ext2_create_symlink(trans, root, objectid,
791 &btrfs_inode, ext2_fs, ext2_ino, ext2_inode);
800 if (convert_flags & CONVERT_FLAG_XATTR) {
801 ret = ext2_copy_extended_attrs(trans, root, objectid,
802 &btrfs_inode, ext2_fs, ext2_ino);
806 return btrfs_insert_inode(trans, root, objectid, &btrfs_inode);
809 static int ext2_is_special_inode(ext2_ino_t ino)
811 if (ino < EXT2_GOOD_OLD_FIRST_INO && ino != EXT2_ROOT_INO)
817 * scan ext2's inode bitmap and copy all used inodes.
819 static int ext2_copy_inodes(struct btrfs_convert_context *cctx,
820 struct btrfs_root *root,
821 u32 convert_flags, struct task_ctx *p)
823 ext2_filsys ext2_fs = cctx->fs_data;
826 ext2_inode_scan ext2_scan;
827 struct ext2_inode ext2_inode;
830 struct btrfs_trans_handle *trans;
832 trans = btrfs_start_transaction(root, 1);
835 err = ext2fs_open_inode_scan(ext2_fs, 0, &ext2_scan);
837 fprintf(stderr, "ext2fs_open_inode_scan: %s\n", error_message(err));
840 while (!(err = ext2fs_get_next_inode(ext2_scan, &ext2_ino,
845 if (ext2_is_special_inode(ext2_ino))
847 objectid = ext2_ino + INO_OFFSET;
848 ret = ext2_copy_single_inode(trans, root,
849 objectid, ext2_fs, ext2_ino,
850 &ext2_inode, convert_flags);
851 p->cur_copy_inodes++;
854 if (trans->blocks_used >= 4096) {
855 ret = btrfs_commit_transaction(trans, root);
857 trans = btrfs_start_transaction(root, 1);
862 fprintf(stderr, "ext2fs_get_next_inode: %s\n", error_message(err));
865 ret = btrfs_commit_transaction(trans, root);
867 ext2fs_close_inode_scan(ext2_scan);
872 const struct btrfs_convert_operations ext2_convert_ops = {
874 .open_fs = ext2_open_fs,
875 .read_used_space = ext2_read_used_space,
876 .copy_inodes = ext2_copy_inodes,
877 .close_fs = ext2_close_fs,
878 .check_state = ext2_check_state,
881 #endif /* BTRFSCONVERT_EXT2 */