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"
20 #include <linux/limits.h>
22 #include "transaction.h"
24 #include "convert/common.h"
25 #include "convert/source-ext2.h"
28 * Open Ext2fs in readonly mode, read block allocation bitmap and
29 * inode bitmap into memory.
31 static int ext2_open_fs(struct btrfs_convert_context *cctx, const char *name)
37 int open_flag = EXT2_FLAG_SOFTSUPP_FEATURES | EXT2_FLAG_64BITS;
39 ret = ext2fs_open(name, open_flag, 0, 0, unix_io_manager, &ext2_fs);
41 fprintf(stderr, "ext2fs_open: %s\n", error_message(ret));
45 * We need to know exactly the used space, some RO compat flags like
46 * BIGALLOC will affect how used space is present.
47 * So we need manuall check any unsupported RO compat flags
49 ro_feature = ext2_fs->super->s_feature_ro_compat;
50 if (ro_feature & ~EXT2_LIB_FEATURE_RO_COMPAT_SUPP) {
52 "unsupported RO features detected: %x, abort convert to avoid possible corruption",
53 ro_feature & ~EXT2_LIB_FEATURE_COMPAT_SUPP);
56 ret = ext2fs_read_inode_bitmap(ext2_fs);
58 fprintf(stderr, "ext2fs_read_inode_bitmap: %s\n",
62 ret = ext2fs_read_block_bitmap(ext2_fs);
64 fprintf(stderr, "ext2fs_read_block_bitmap: %s\n",
69 * search each block group for a free inode. this set up
70 * uninit block/inode bitmaps appropriately.
73 while (ino <= ext2_fs->super->s_inodes_count) {
75 ext2fs_new_inode(ext2_fs, ino, 0, NULL, &foo);
76 ino += EXT2_INODES_PER_GROUP(ext2_fs->super);
79 if (!(ext2_fs->super->s_feature_incompat &
80 EXT2_FEATURE_INCOMPAT_FILETYPE)) {
81 error("filetype feature is missing");
85 cctx->fs_data = ext2_fs;
86 cctx->blocksize = ext2_fs->blocksize;
87 cctx->block_count = ext2_fs->super->s_blocks_count;
88 cctx->total_bytes = ext2_fs->blocksize * ext2_fs->super->s_blocks_count;
89 cctx->volume_name = strndup(ext2_fs->super->s_volume_name, 16);
90 cctx->first_data_block = ext2_fs->super->s_first_data_block;
91 cctx->inodes_count = ext2_fs->super->s_inodes_count;
92 cctx->free_inodes_count = ext2_fs->super->s_free_inodes_count;
95 ext2fs_close(ext2_fs);
99 static int __ext2_add_one_block(ext2_filsys fs, char *bitmap,
100 unsigned long group_nr, struct cache_tree *used)
102 unsigned long offset;
106 offset = fs->super->s_first_data_block;
107 offset /= EXT2FS_CLUSTER_RATIO(fs);
108 offset += group_nr * EXT2_CLUSTERS_PER_GROUP(fs->super);
109 for (i = 0; i < EXT2_CLUSTERS_PER_GROUP(fs->super); i++) {
110 if ((i + offset) >= ext2fs_blocks_count(fs->super))
113 if (ext2fs_test_bit(i, bitmap)) {
116 start = (i + offset) * EXT2FS_CLUSTER_RATIO(fs);
117 start *= fs->blocksize;
118 ret = add_merge_cache_extent(used, start,
128 * Read all used ext2 space into cctx->used cache tree
130 static int ext2_read_used_space(struct btrfs_convert_context *cctx)
132 ext2_filsys fs = (ext2_filsys)cctx->fs_data;
133 blk64_t blk_itr = EXT2FS_B2C(fs, fs->super->s_first_data_block);
134 struct cache_tree *used_tree = &cctx->used_space;
135 char *block_bitmap = NULL;
140 block_nbytes = EXT2_CLUSTERS_PER_GROUP(fs->super) / 8;
142 error("EXT2_CLUSTERS_PER_GROUP too small: %llu",
143 (unsigned long long)(EXT2_CLUSTERS_PER_GROUP(fs->super)));
147 block_bitmap = malloc(block_nbytes);
151 for (i = 0; i < fs->group_desc_count; i++) {
152 ret = ext2fs_get_block_bitmap_range2(fs->block_map, blk_itr,
153 block_nbytes * 8, block_bitmap);
155 error("fail to get bitmap from ext2, %s",
159 ret = __ext2_add_one_block(fs, block_bitmap, i, used_tree);
161 error("fail to build used space tree, %s",
165 blk_itr += EXT2_CLUSTERS_PER_GROUP(fs->super);
172 static void ext2_close_fs(struct btrfs_convert_context *cctx)
174 if (cctx->volume_name) {
175 free(cctx->volume_name);
176 cctx->volume_name = NULL;
178 ext2fs_close(cctx->fs_data);
181 static u8 ext2_filetype_conversion_table[EXT2_FT_MAX] = {
182 [EXT2_FT_UNKNOWN] = BTRFS_FT_UNKNOWN,
183 [EXT2_FT_REG_FILE] = BTRFS_FT_REG_FILE,
184 [EXT2_FT_DIR] = BTRFS_FT_DIR,
185 [EXT2_FT_CHRDEV] = BTRFS_FT_CHRDEV,
186 [EXT2_FT_BLKDEV] = BTRFS_FT_BLKDEV,
187 [EXT2_FT_FIFO] = BTRFS_FT_FIFO,
188 [EXT2_FT_SOCK] = BTRFS_FT_SOCK,
189 [EXT2_FT_SYMLINK] = BTRFS_FT_SYMLINK,
192 static int ext2_dir_iterate_proc(ext2_ino_t dir, int entry,
193 struct ext2_dir_entry *dirent,
194 int offset, int blocksize,
195 char *buf,void *priv_data)
200 char dotdot[] = "..";
201 struct dir_iterate_data *idata = (struct dir_iterate_data *)priv_data;
204 name_len = dirent->name_len & 0xFF;
206 objectid = dirent->inode + INO_OFFSET;
207 if (!strncmp(dirent->name, dotdot, name_len)) {
209 BUG_ON(idata->parent != 0);
210 idata->parent = objectid;
214 if (dirent->inode < EXT2_GOOD_OLD_FIRST_INO)
217 file_type = dirent->name_len >> 8;
218 BUG_ON(file_type > EXT2_FT_SYMLINK);
220 ret = convert_insert_dirent(idata->trans, idata->root, dirent->name,
221 name_len, idata->objectid, objectid,
222 ext2_filetype_conversion_table[file_type],
223 idata->index_cnt, idata->inode);
225 idata->errcode = ret;
233 static int ext2_create_dir_entries(struct btrfs_trans_handle *trans,
234 struct btrfs_root *root, u64 objectid,
235 struct btrfs_inode_item *btrfs_inode,
236 ext2_filsys ext2_fs, ext2_ino_t ext2_ino)
240 struct dir_iterate_data data = {
243 .inode = btrfs_inode,
244 .objectid = objectid,
250 err = ext2fs_dir_iterate2(ext2_fs, ext2_ino, 0, NULL,
251 ext2_dir_iterate_proc, &data);
255 if (ret == 0 && data.parent == objectid) {
256 ret = btrfs_insert_inode_ref(trans, root, "..", 2,
257 objectid, objectid, 0);
261 fprintf(stderr, "ext2fs_dir_iterate2: %s\n", error_message(err));
265 static int ext2_block_iterate_proc(ext2_filsys fs, blk_t *blocknr,
266 e2_blkcnt_t blockcnt, blk_t ref_block,
267 int ref_offset, void *priv_data)
270 struct blk_iterate_data *idata;
271 idata = (struct blk_iterate_data *)priv_data;
272 ret = block_iterate_proc(*blocknr, blockcnt, idata);
274 idata->errcode = ret;
281 * traverse file's data blocks, record these data blocks as file extents.
283 static int ext2_create_file_extents(struct btrfs_trans_handle *trans,
284 struct btrfs_root *root, u64 objectid,
285 struct btrfs_inode_item *btrfs_inode,
286 ext2_filsys ext2_fs, ext2_ino_t ext2_ino,
293 u32 sectorsize = root->fs_info->sectorsize;
294 u64 inode_size = btrfs_stack_inode_size(btrfs_inode);
295 struct blk_iterate_data data;
297 init_blk_iterate_data(&data, trans, root, btrfs_inode, objectid,
298 convert_flags & CONVERT_FLAG_DATACSUM);
300 err = ext2fs_block_iterate2(ext2_fs, ext2_ino, BLOCK_FLAG_DATA_ONLY,
301 NULL, ext2_block_iterate_proc, &data);
307 if ((convert_flags & CONVERT_FLAG_INLINE_DATA) && data.first_block == 0
308 && data.num_blocks > 0
309 && inode_size <= BTRFS_MAX_INLINE_DATA_SIZE(root)) {
310 u64 num_bytes = data.num_blocks * sectorsize;
311 u64 disk_bytenr = data.disk_block * sectorsize;
314 buffer = malloc(num_bytes);
317 ret = read_disk_extent(root, disk_bytenr, num_bytes, buffer);
320 if (num_bytes > inode_size)
321 num_bytes = inode_size;
322 ret = btrfs_insert_inline_extent(trans, root, objectid,
323 0, buffer, num_bytes);
326 nbytes = btrfs_stack_inode_nbytes(btrfs_inode) + num_bytes;
327 btrfs_set_stack_inode_nbytes(btrfs_inode, nbytes);
328 } else if (data.num_blocks > 0) {
329 ret = record_file_blocks(&data, data.first_block,
330 data.disk_block, data.num_blocks);
334 data.first_block += data.num_blocks;
335 last_block = (inode_size + sectorsize - 1) / sectorsize;
336 if (last_block > data.first_block) {
337 ret = record_file_blocks(&data, data.first_block, 0,
338 last_block - data.first_block);
344 fprintf(stderr, "ext2fs_block_iterate2: %s\n", error_message(err));
348 static int ext2_create_symlink(struct btrfs_trans_handle *trans,
349 struct btrfs_root *root, u64 objectid,
350 struct btrfs_inode_item *btrfs_inode,
351 ext2_filsys ext2_fs, ext2_ino_t ext2_ino,
352 struct ext2_inode *ext2_inode)
356 u64 inode_size = btrfs_stack_inode_size(btrfs_inode);
357 if (ext2fs_inode_data_blocks2(ext2_fs, ext2_inode)) {
358 btrfs_set_stack_inode_size(btrfs_inode, inode_size + 1);
359 ret = ext2_create_file_extents(trans, root, objectid,
360 btrfs_inode, ext2_fs, ext2_ino,
361 CONVERT_FLAG_DATACSUM |
362 CONVERT_FLAG_INLINE_DATA);
363 btrfs_set_stack_inode_size(btrfs_inode, inode_size);
367 pathname = (char *)&(ext2_inode->i_block[0]);
368 BUG_ON(pathname[inode_size] != 0);
369 ret = btrfs_insert_inline_extent(trans, root, objectid, 0,
370 pathname, inode_size + 1);
371 btrfs_set_stack_inode_nbytes(btrfs_inode, inode_size + 1);
376 * Following xattr/acl related codes are based on codes in
377 * fs/ext3/xattr.c and fs/ext3/acl.c
379 #define EXT2_XATTR_BHDR(ptr) ((struct ext2_ext_attr_header *)(ptr))
380 #define EXT2_XATTR_BFIRST(ptr) \
381 ((struct ext2_ext_attr_entry *)(EXT2_XATTR_BHDR(ptr) + 1))
382 #define EXT2_XATTR_IHDR(inode) \
383 ((struct ext2_ext_attr_header *) ((void *)(inode) + \
384 EXT2_GOOD_OLD_INODE_SIZE + (inode)->i_extra_isize))
385 #define EXT2_XATTR_IFIRST(inode) \
386 ((struct ext2_ext_attr_entry *) ((void *)EXT2_XATTR_IHDR(inode) + \
387 sizeof(EXT2_XATTR_IHDR(inode)->h_magic)))
389 static int ext2_xattr_check_names(struct ext2_ext_attr_entry *entry,
392 struct ext2_ext_attr_entry *next;
394 while (!EXT2_EXT_IS_LAST_ENTRY(entry)) {
395 next = EXT2_EXT_ATTR_NEXT(entry);
396 if ((void *)next >= end)
403 static int ext2_xattr_check_block(const char *buf, size_t size)
406 struct ext2_ext_attr_header *header = EXT2_XATTR_BHDR(buf);
408 if (header->h_magic != EXT2_EXT_ATTR_MAGIC ||
409 header->h_blocks != 1)
411 error = ext2_xattr_check_names(EXT2_XATTR_BFIRST(buf), buf + size);
415 static int ext2_xattr_check_entry(struct ext2_ext_attr_entry *entry,
418 size_t value_size = entry->e_value_size;
420 if (entry->e_value_block != 0 || value_size > size ||
421 entry->e_value_offs + value_size > size)
426 static inline int ext2_acl_count(size_t size)
429 size -= sizeof(ext2_acl_header);
430 s = size - 4 * sizeof(ext2_acl_entry_short);
432 if (size % sizeof(ext2_acl_entry_short))
434 return size / sizeof(ext2_acl_entry_short);
436 if (s % sizeof(ext2_acl_entry))
438 return s / sizeof(ext2_acl_entry) + 4;
442 static inline size_t acl_ea_size(int count)
444 return sizeof(acl_ea_header) + count * sizeof(acl_ea_entry);
447 static int ext2_acl_to_xattr(void *dst, const void *src,
448 size_t dst_size, size_t src_size)
451 const void *end = src + src_size;
452 acl_ea_header *ext_acl = (acl_ea_header *)dst;
453 acl_ea_entry *dst_entry = ext_acl->a_entries;
454 ext2_acl_entry *src_entry;
456 if (src_size < sizeof(ext2_acl_header))
458 if (((ext2_acl_header *)src)->a_version !=
459 cpu_to_le32(EXT2_ACL_VERSION))
461 src += sizeof(ext2_acl_header);
462 count = ext2_acl_count(src_size);
466 BUG_ON(dst_size < acl_ea_size(count));
467 ext_acl->a_version = cpu_to_le32(ACL_EA_VERSION);
468 for (i = 0; i < count; i++, dst_entry++) {
469 src_entry = (ext2_acl_entry *)src;
470 if (src + sizeof(ext2_acl_entry_short) > end)
472 dst_entry->e_tag = src_entry->e_tag;
473 dst_entry->e_perm = src_entry->e_perm;
474 switch (le16_to_cpu(src_entry->e_tag)) {
479 src += sizeof(ext2_acl_entry_short);
480 dst_entry->e_id = cpu_to_le32(ACL_UNDEFINED_ID);
484 src += sizeof(ext2_acl_entry);
487 dst_entry->e_id = src_entry->e_id;
500 static char *xattr_prefix_table[] = {
502 [2] = "system.posix_acl_access",
503 [3] = "system.posix_acl_default",
508 static int ext2_copy_single_xattr(struct btrfs_trans_handle *trans,
509 struct btrfs_root *root, u64 objectid,
510 struct ext2_ext_attr_entry *entry,
511 const void *data, u32 datalen)
516 void *databuf = NULL;
517 char namebuf[XATTR_NAME_MAX + 1];
519 name_index = entry->e_name_index;
520 if (name_index >= ARRAY_SIZE(xattr_prefix_table) ||
521 xattr_prefix_table[name_index] == NULL)
523 name_len = strlen(xattr_prefix_table[name_index]) +
525 if (name_len >= sizeof(namebuf))
528 if (name_index == 2 || name_index == 3) {
529 size_t bufsize = acl_ea_size(ext2_acl_count(datalen));
530 databuf = malloc(bufsize);
533 ret = ext2_acl_to_xattr(databuf, data, bufsize, datalen);
539 strncpy(namebuf, xattr_prefix_table[name_index], XATTR_NAME_MAX);
540 strncat(namebuf, EXT2_EXT_ATTR_NAME(entry), entry->e_name_len);
541 if (name_len + datalen > BTRFS_LEAF_DATA_SIZE(root) -
542 sizeof(struct btrfs_item) - sizeof(struct btrfs_dir_item)) {
543 fprintf(stderr, "skip large xattr on inode %Lu name %.*s\n",
544 objectid - INO_OFFSET, name_len, namebuf);
547 ret = btrfs_insert_xattr_item(trans, root, namebuf, name_len,
548 data, datalen, objectid);
554 static int ext2_copy_extended_attrs(struct btrfs_trans_handle *trans,
555 struct btrfs_root *root, u64 objectid,
556 struct btrfs_inode_item *btrfs_inode,
557 ext2_filsys ext2_fs, ext2_ino_t ext2_ino)
563 u32 block_size = ext2_fs->blocksize;
564 u32 inode_size = EXT2_INODE_SIZE(ext2_fs->super);
565 struct ext2_inode_large *ext2_inode;
566 struct ext2_ext_attr_entry *entry;
569 char inode_buf[EXT2_GOOD_OLD_INODE_SIZE];
571 if (inode_size <= EXT2_GOOD_OLD_INODE_SIZE) {
572 ext2_inode = (struct ext2_inode_large *)inode_buf;
574 ext2_inode = (struct ext2_inode_large *)malloc(inode_size);
578 err = ext2fs_read_inode_full(ext2_fs, ext2_ino, (void *)ext2_inode,
581 fprintf(stderr, "ext2fs_read_inode_full: %s\n",
587 if (ext2_ino > ext2_fs->super->s_first_ino &&
588 inode_size > EXT2_GOOD_OLD_INODE_SIZE) {
589 if (EXT2_GOOD_OLD_INODE_SIZE +
590 ext2_inode->i_extra_isize > inode_size) {
594 if (ext2_inode->i_extra_isize != 0 &&
595 EXT2_XATTR_IHDR(ext2_inode)->h_magic ==
596 EXT2_EXT_ATTR_MAGIC) {
602 void *end = (void *)ext2_inode + inode_size;
603 entry = EXT2_XATTR_IFIRST(ext2_inode);
604 total = end - (void *)entry;
605 ret = ext2_xattr_check_names(entry, end);
608 while (!EXT2_EXT_IS_LAST_ENTRY(entry)) {
609 ret = ext2_xattr_check_entry(entry, total);
612 data = (void *)EXT2_XATTR_IFIRST(ext2_inode) +
614 datalen = entry->e_value_size;
615 ret = ext2_copy_single_xattr(trans, root, objectid,
616 entry, data, datalen);
619 entry = EXT2_EXT_ATTR_NEXT(entry);
623 if (ext2_inode->i_file_acl == 0)
626 buffer = malloc(block_size);
631 err = ext2fs_read_ext_attr2(ext2_fs, ext2_inode->i_file_acl, buffer);
633 fprintf(stderr, "ext2fs_read_ext_attr2: %s\n",
638 ret = ext2_xattr_check_block(buffer, block_size);
642 entry = EXT2_XATTR_BFIRST(buffer);
643 while (!EXT2_EXT_IS_LAST_ENTRY(entry)) {
644 ret = ext2_xattr_check_entry(entry, block_size);
647 data = buffer + entry->e_value_offs;
648 datalen = entry->e_value_size;
649 ret = ext2_copy_single_xattr(trans, root, objectid,
650 entry, data, datalen);
653 entry = EXT2_EXT_ATTR_NEXT(entry);
657 if ((void *)ext2_inode != inode_buf)
662 #define MKDEV(ma, mi) (((ma) << MINORBITS) | (mi))
664 static inline dev_t old_decode_dev(u16 val)
666 return MKDEV((val >> 8) & 255, val & 255);
669 static inline dev_t new_decode_dev(u32 dev)
671 unsigned major = (dev & 0xfff00) >> 8;
672 unsigned minor = (dev & 0xff) | ((dev >> 12) & 0xfff00);
673 return MKDEV(major, minor);
676 static void ext2_copy_inode_item(struct btrfs_inode_item *dst,
677 struct ext2_inode *src, u32 blocksize)
679 btrfs_set_stack_inode_generation(dst, 1);
680 btrfs_set_stack_inode_sequence(dst, 0);
681 btrfs_set_stack_inode_transid(dst, 1);
682 btrfs_set_stack_inode_size(dst, src->i_size);
683 btrfs_set_stack_inode_nbytes(dst, 0);
684 btrfs_set_stack_inode_block_group(dst, 0);
685 btrfs_set_stack_inode_nlink(dst, src->i_links_count);
686 btrfs_set_stack_inode_uid(dst, src->i_uid | (src->i_uid_high << 16));
687 btrfs_set_stack_inode_gid(dst, src->i_gid | (src->i_gid_high << 16));
688 btrfs_set_stack_inode_mode(dst, src->i_mode);
689 btrfs_set_stack_inode_rdev(dst, 0);
690 btrfs_set_stack_inode_flags(dst, 0);
691 btrfs_set_stack_timespec_sec(&dst->atime, src->i_atime);
692 btrfs_set_stack_timespec_nsec(&dst->atime, 0);
693 btrfs_set_stack_timespec_sec(&dst->ctime, src->i_ctime);
694 btrfs_set_stack_timespec_nsec(&dst->ctime, 0);
695 btrfs_set_stack_timespec_sec(&dst->mtime, src->i_mtime);
696 btrfs_set_stack_timespec_nsec(&dst->mtime, 0);
697 btrfs_set_stack_timespec_sec(&dst->otime, 0);
698 btrfs_set_stack_timespec_nsec(&dst->otime, 0);
700 if (S_ISDIR(src->i_mode)) {
701 btrfs_set_stack_inode_size(dst, 0);
702 btrfs_set_stack_inode_nlink(dst, 1);
704 if (S_ISREG(src->i_mode)) {
705 btrfs_set_stack_inode_size(dst, (u64)src->i_size_high << 32 |
708 if (!S_ISREG(src->i_mode) && !S_ISDIR(src->i_mode) &&
709 !S_ISLNK(src->i_mode)) {
710 if (src->i_block[0]) {
711 btrfs_set_stack_inode_rdev(dst,
712 old_decode_dev(src->i_block[0]));
714 btrfs_set_stack_inode_rdev(dst,
715 new_decode_dev(src->i_block[1]));
718 memset(&dst->reserved, 0, sizeof(dst->reserved));
720 static int ext2_check_state(struct btrfs_convert_context *cctx)
722 ext2_filsys fs = cctx->fs_data;
724 if (!(fs->super->s_state & EXT2_VALID_FS))
726 else if (fs->super->s_state & EXT2_ERROR_FS)
732 /* EXT2_*_FL to BTRFS_INODE_FLAG_* stringification helper */
733 #define COPY_ONE_EXT2_FLAG(flags, ext2_inode, name) ({ \
734 if (ext2_inode->i_flags & EXT2_##name##_FL) \
735 flags |= BTRFS_INODE_##name; \
739 * Convert EXT2_*_FL to corresponding BTRFS_INODE_* flags
741 * Only a subset of EXT_*_FL is supported in btrfs.
743 static void ext2_convert_inode_flags(struct btrfs_inode_item *dst,
744 struct ext2_inode *src)
746 u64 flags = btrfs_stack_inode_flags(dst);
748 COPY_ONE_EXT2_FLAG(flags, src, APPEND);
749 COPY_ONE_EXT2_FLAG(flags, src, SYNC);
750 COPY_ONE_EXT2_FLAG(flags, src, IMMUTABLE);
751 COPY_ONE_EXT2_FLAG(flags, src, NODUMP);
752 COPY_ONE_EXT2_FLAG(flags, src, NOATIME);
753 COPY_ONE_EXT2_FLAG(flags, src, DIRSYNC);
754 btrfs_set_stack_inode_flags(dst, flags);
758 * copy a single inode. do all the required works, such as cloning
759 * inode item, creating file extents and creating directory entries.
761 static int ext2_copy_single_inode(struct btrfs_trans_handle *trans,
762 struct btrfs_root *root, u64 objectid,
763 ext2_filsys ext2_fs, ext2_ino_t ext2_ino,
764 struct ext2_inode *ext2_inode,
768 struct btrfs_inode_item btrfs_inode;
770 if (ext2_inode->i_links_count == 0)
773 ext2_copy_inode_item(&btrfs_inode, ext2_inode, ext2_fs->blocksize);
774 if (!(convert_flags & CONVERT_FLAG_DATACSUM)
775 && S_ISREG(ext2_inode->i_mode)) {
776 u32 flags = btrfs_stack_inode_flags(&btrfs_inode) |
777 BTRFS_INODE_NODATASUM;
778 btrfs_set_stack_inode_flags(&btrfs_inode, flags);
780 ext2_convert_inode_flags(&btrfs_inode, ext2_inode);
782 switch (ext2_inode->i_mode & S_IFMT) {
784 ret = ext2_create_file_extents(trans, root, objectid,
785 &btrfs_inode, ext2_fs, ext2_ino, convert_flags);
788 ret = ext2_create_dir_entries(trans, root, objectid,
789 &btrfs_inode, ext2_fs, ext2_ino);
792 ret = ext2_create_symlink(trans, root, objectid,
793 &btrfs_inode, ext2_fs, ext2_ino, ext2_inode);
802 if (convert_flags & CONVERT_FLAG_XATTR) {
803 ret = ext2_copy_extended_attrs(trans, root, objectid,
804 &btrfs_inode, ext2_fs, ext2_ino);
808 return btrfs_insert_inode(trans, root, objectid, &btrfs_inode);
811 static int ext2_is_special_inode(ext2_ino_t ino)
813 if (ino < EXT2_GOOD_OLD_FIRST_INO && ino != EXT2_ROOT_INO)
819 * scan ext2's inode bitmap and copy all used inodes.
821 static int ext2_copy_inodes(struct btrfs_convert_context *cctx,
822 struct btrfs_root *root,
823 u32 convert_flags, struct task_ctx *p)
825 ext2_filsys ext2_fs = cctx->fs_data;
828 ext2_inode_scan ext2_scan;
829 struct ext2_inode ext2_inode;
832 struct btrfs_trans_handle *trans;
834 trans = btrfs_start_transaction(root, 1);
837 err = ext2fs_open_inode_scan(ext2_fs, 0, &ext2_scan);
839 fprintf(stderr, "ext2fs_open_inode_scan: %s\n", error_message(err));
842 while (!(err = ext2fs_get_next_inode(ext2_scan, &ext2_ino,
847 if (ext2_is_special_inode(ext2_ino))
849 objectid = ext2_ino + INO_OFFSET;
850 ret = ext2_copy_single_inode(trans, root,
851 objectid, ext2_fs, ext2_ino,
852 &ext2_inode, convert_flags);
853 p->cur_copy_inodes++;
856 if (trans->blocks_used >= 4096) {
857 ret = btrfs_commit_transaction(trans, root);
859 trans = btrfs_start_transaction(root, 1);
864 fprintf(stderr, "ext2fs_get_next_inode: %s\n", error_message(err));
867 ret = btrfs_commit_transaction(trans, root);
869 ext2fs_close_inode_scan(ext2_scan);
874 const struct btrfs_convert_operations ext2_convert_ops = {
876 .open_fs = ext2_open_fs,
877 .read_used_space = ext2_read_used_space,
878 .copy_inodes = ext2_copy_inodes,
879 .close_fs = ext2_close_fs,
880 .check_state = ext2_check_state,
883 #endif /* BTRFSCONVERT_EXT2 */