2 * Copyright (C) 2010 The Android Open Source Project
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
16 #include "ext4_utils.h"
17 #include "make_ext4fs.h"
18 #include "ext4_extents.h"
19 #include "output_file.h"
20 #include "backed_block.h"
22 #include "ext4fixup.h"
24 #include <sys/types.h>
26 #include <sys/types.h>
31 #if defined(__APPLE__) && defined(__MACH__)
36 /* The inode block count for a file/directory is in units of 512 byte blocks,
37 * _NOT_ the filesystem block size!
39 #define INODE_BLOCK_SIZE 512
41 #define MAX_EXT4_BLOCK_SIZE 4096
43 /* The two modes the recurse_dir() can be in */
44 #define SANITY_CHECK_PASS 1
45 #define MARK_INODE_NUMS 2
46 #define UPDATE_INODE_NUMS 3
48 /* Magic numbers to indicate what state the update process is in */
49 #define MAGIC_STATE_MARKING_INUMS 0x7000151515565512ll
50 #define MAGIC_STATE_UPDATING_INUMS 0x6121131211735123ll
51 #define MAGIC_STATE_UPDATING_SB 0x15e1715151558477ll
53 /* Internal state variables corresponding to the magic numbers */
55 #define STATE_MARKING_INUMS 1
56 #define STATE_UPDATING_INUMS 2
57 #define STATE_UPDATING_SB 3
59 static int verbose = 0;
60 static int no_write = 0;
61 static int new_inodes_per_group = 0;
62 static int no_write_fixup_state = 0;
64 static int compute_new_inum(unsigned int old_inum)
66 unsigned int group, offset;
68 group = old_inum / info.inodes_per_group;
69 offset = old_inum % info.inodes_per_group;
71 return (group * new_inodes_per_group) + offset;
74 /* Function to read the primary superblock */
75 static void read_sb(int fd, struct ext4_super_block *sb)
79 ret = lseek64(fd, 1024, SEEK_SET);
81 critical_error_errno("failed to seek to superblock");
83 ret = read(fd, sb, sizeof(*sb));
85 critical_error_errno("failed to read superblock");
86 if (ret != sizeof(*sb))
87 critical_error("failed to read all of superblock");
90 /* Function to write a primary or backup superblock at a given offset */
91 static void write_sb(int fd, unsigned long long offset, struct ext4_super_block *sb)
99 ret = lseek64(fd, offset, SEEK_SET);
101 critical_error_errno("failed to seek to superblock");
103 ret = write(fd, sb, sizeof(*sb));
105 critical_error_errno("failed to write superblock");
106 if (ret != sizeof(*sb))
107 critical_error("failed to write all of superblock");
110 static int get_fs_fixup_state(int fd)
112 unsigned long long magic;
116 return no_write_fixup_state;
119 lseek64(fd, 0, SEEK_SET);
120 len = read(fd, &magic, sizeof(magic));
121 if (len != sizeof(magic)) {
122 critical_error("cannot read fixup_state\n");
126 case MAGIC_STATE_MARKING_INUMS:
127 ret = STATE_MARKING_INUMS;
129 case MAGIC_STATE_UPDATING_INUMS:
130 ret = STATE_UPDATING_INUMS;
132 case MAGIC_STATE_UPDATING_SB:
133 ret = STATE_UPDATING_SB;
141 static int set_fs_fixup_state(int fd, int state)
143 unsigned long long magic;
144 struct ext4_super_block sb;
148 no_write_fixup_state = state;
153 case STATE_MARKING_INUMS:
154 magic = MAGIC_STATE_MARKING_INUMS;
156 case STATE_UPDATING_INUMS:
157 magic = MAGIC_STATE_UPDATING_INUMS;
159 case STATE_UPDATING_SB:
160 magic = MAGIC_STATE_UPDATING_SB;
168 lseek64(fd, 0, SEEK_SET);
169 len = write(fd, &magic, sizeof(magic));
170 if (len != sizeof(magic)) {
171 critical_error("cannot write fixup_state\n");
176 /* If we are in the process of updating the filesystem, make it unmountable */
179 /* we are done, so make the filesystem mountable again */
180 sb.s_desc_size &= ~1;
182 write_sb(fd, 1024, &sb);
187 static int read_ext(int fd)
190 struct ext4_super_block sb;
197 /* Clear the low bit which is set while this tool is in progress.
198 * If the tool crashes, it will still be set when we restart.
199 * The low bit is set to make the filesystem unmountable while
200 * it is being fixed up. Also allow 0, which means the old ext2
203 if (((sb.s_desc_size & ~1) != sizeof(struct ext2_group_desc)) &&
204 ((sb.s_desc_size & ~1) != 0))
205 critical_error("error: bg_desc_size != sizeof(struct ext2_group_desc)\n");
207 ret = lseek64(fd, info.len, SEEK_SET);
209 critical_error_errno("failed to seek to end of input image");
211 ret = lseek64(fd, info.block_size * (aux_info.first_data_block + 1), SEEK_SET);
213 critical_error_errno("failed to seek to block group descriptors");
215 ret = read(fd, aux_info.bg_desc, info.block_size * aux_info.bg_desc_blocks);
217 critical_error_errno("failed to read block group descriptors");
218 if (ret != (int)info.block_size * (int)aux_info.bg_desc_blocks)
219 critical_error("failed to read all of block group descriptors");
222 printf("Found filesystem with parameters:\n");
223 printf(" Size: %llu\n", info.len);
224 printf(" Block size: %d\n", info.block_size);
225 printf(" Blocks per group: %d\n", info.blocks_per_group);
226 printf(" Inodes per group: %d\n", info.inodes_per_group);
227 printf(" Inode size: %d\n", info.inode_size);
228 printf(" Label: %s\n", info.label);
229 printf(" Blocks: %llu\n", aux_info.len_blocks);
230 printf(" Block groups: %d\n", aux_info.groups);
231 printf(" Reserved block group size: %d\n", info.bg_desc_reserve_blocks);
232 printf(" Used %d/%d inodes and %d/%d blocks\n",
233 aux_info.sb->s_inodes_count - aux_info.sb->s_free_inodes_count,
234 aux_info.sb->s_inodes_count,
235 aux_info.sb->s_blocks_count_lo - aux_info.sb->s_free_blocks_count_lo,
236 aux_info.sb->s_blocks_count_lo);
242 static int read_inode(int fd, unsigned int inum, struct ext4_inode *inode)
244 unsigned int bg_num, bg_offset;
245 off64_t inode_offset;
248 bg_num = (inum-1) / info.inodes_per_group;
249 bg_offset = (inum-1) % info.inodes_per_group;
251 inode_offset = ((unsigned long long)aux_info.bg_desc[bg_num].bg_inode_table * info.block_size) +
252 (bg_offset * info.inode_size);
254 if (lseek64(fd, inode_offset, SEEK_SET) < 0) {
255 critical_error_errno("failed to seek to inode %d\n", inum);
258 len=read(fd, inode, sizeof(*inode));
259 if (len != sizeof(*inode)) {
260 critical_error_errno("failed to read inode %d\n", inum);
266 static int read_block(int fd, unsigned long long block_num, void *block)
271 off = block_num * info.block_size;
273 if (lseek64(fd, off, SEEK_SET) , 0) {
274 critical_error_errno("failed to seek to block %lld\n", block_num);
277 len=read(fd, block, info.block_size);
278 if (len != info.block_size) {
279 critical_error_errno("failed to read block %lld\n", block_num);
285 static int write_block(int fd, unsigned long long block_num, void *block)
294 off = block_num * info.block_size;
296 if (lseek64(fd, off, SEEK_SET) < 0) {
297 critical_error_errno("failed to seek to block %lld\n", block_num);
300 len=write(fd, block, info.block_size);
301 if (len != info.block_size) {
302 critical_error_errno("failed to write block %lld\n", block_num);
308 static int bitmap_get_bit(u8 *bitmap, u32 bit)
310 if (bitmap[bit / 8] & (1 << (bit % 8)))
316 static void bitmap_clear_bit(u8 *bitmap, u32 bit)
318 bitmap[bit / 8] &= ~(1 << (bit % 8));
323 static void check_inode_bitmap(int fd, unsigned int bg_num)
325 unsigned int inode_bitmap_block_num;
326 unsigned char block[MAX_EXT4_BLOCK_SIZE];
327 int i, bitmap_updated = 0;
329 /* Using the bg_num, aux_info.bg_desc[], info.inodes_per_group and
330 * new_inodes_per_group, retrieve the inode bitmap, and make sure
331 * the bits between the old and new size are clear
333 inode_bitmap_block_num = aux_info.bg_desc[bg_num].bg_inode_bitmap;
335 read_block(fd, inode_bitmap_block_num, block);
337 for (i = info.inodes_per_group; i < new_inodes_per_group; i++) {
338 if (bitmap_get_bit(block, i)) {
339 bitmap_clear_bit(block, i);
344 if (bitmap_updated) {
346 printf("Warning: updated inode bitmap for block group %d\n", bg_num);
348 write_block(fd, inode_bitmap_block_num, block);
354 /* Update the superblock and bgdesc of the specified block group */
355 static int update_superblocks_and_bg_desc(int fd, int state)
358 struct ext4_super_block sb;
359 unsigned int num_block_groups, total_new_inodes;
365 /* Compute how many more inodes are now available */
366 num_block_groups = DIV_ROUND_UP(aux_info.len_blocks, info.blocks_per_group);
367 total_new_inodes = num_block_groups * (new_inodes_per_group - sb.s_inodes_per_group);
370 printf("created %d additional inodes\n", total_new_inodes);
373 /* Update the free inodes count in each block group descriptor */
374 for (i = 0; i < num_block_groups; i++) {
375 if (state == STATE_UPDATING_SB) {
376 aux_info.bg_desc[i].bg_free_inodes_count += (new_inodes_per_group - sb.s_inodes_per_group);
378 check_inode_bitmap(fd, i);
381 /* First some sanity checks */
382 if ((sb.s_inodes_count + total_new_inodes) != (new_inodes_per_group * num_block_groups)) {
383 critical_error("Failed sanity check on new inode count\n");
385 if (new_inodes_per_group % (info.block_size/info.inode_size)) {
386 critical_error("Failed sanity check on new inode per group alignment\n");
389 /* Update the free inodes count in the superblock */
390 sb.s_inodes_count += total_new_inodes;
391 sb.s_free_inodes_count += total_new_inodes;
392 sb.s_inodes_per_group = new_inodes_per_group;
394 for (i = 0; i < aux_info.groups; i++) {
395 if (ext4_bg_has_super_block(i)) {
396 unsigned int sb_offset;
399 /* The first superblock is offset by 1K to leave room for boot sectors */
405 sb.s_block_group_nr = i;
406 /* Don't write out the backup superblocks with the bit set in the s_desc_size
407 * which prevents the filesystem from mounting. The bit for the primary
408 * superblock will be cleared on the final call to set_fs_fixup_state() */
410 sb.s_desc_size &= ~1;
413 write_sb(fd, (unsigned long long)i * info.blocks_per_group * info.block_size + sb_offset, &sb);
415 ret = lseek64(fd, ((unsigned long long)i * info.blocks_per_group * info.block_size) +
416 (info.block_size * (aux_info.first_data_block + 1)), SEEK_SET);
418 critical_error_errno("failed to seek to block group descriptors");
421 ret = write(fd, aux_info.bg_desc, info.block_size * aux_info.bg_desc_blocks);
423 critical_error_errno("failed to write block group descriptors");
424 if (ret != (int)info.block_size * (int)aux_info.bg_desc_blocks)
425 critical_error("failed to write all of block group descriptors");
434 static int get_direct_blocks(struct ext4_inode *inode, unsigned long long *block_list,
438 unsigned int ret = 0;
439 unsigned int sectors_per_block;
441 sectors_per_block = info.block_size / INODE_BLOCK_SIZE;
442 while ((i < (inode->i_blocks_lo / sectors_per_block)) && (i < EXT4_NDIR_BLOCKS)) {
443 block_list[i] = inode->i_block[i];
449 if ((inode->i_blocks_lo / sectors_per_block) > EXT4_NDIR_BLOCKS) {
456 static int get_indirect_blocks(int fd, struct ext4_inode *inode,
457 unsigned long long *block_list, unsigned int *count)
460 unsigned int *indirect_block;
461 unsigned int sectors_per_block;
463 sectors_per_block = info.block_size / INODE_BLOCK_SIZE;
465 indirect_block = (unsigned int *)malloc(info.block_size);
466 if (indirect_block == 0) {
467 critical_error("failed to allocate memory for indirect_block\n");
470 read_block(fd, inode->i_block[EXT4_NDIR_BLOCKS], indirect_block);
472 for(i = 0; i < (inode->i_blocks_lo / sectors_per_block - EXT4_NDIR_BLOCKS); i++) {
473 block_list[EXT4_NDIR_BLOCKS+i] = indirect_block[i];
478 free(indirect_block);
483 static int get_block_list_indirect(int fd, struct ext4_inode *inode, unsigned long long *block_list)
485 unsigned int count=0;
487 if (get_direct_blocks(inode, block_list, &count)) {
488 get_indirect_blocks(fd, inode, block_list, &count);
494 static int get_extent_ents(int fd, struct ext4_extent_header *ext_hdr, unsigned long long *block_list)
497 struct ext4_extent *extent;
498 off64_t fs_block_num;
500 if (ext_hdr->eh_depth != 0) {
501 critical_error("get_extent_ents called with eh_depth != 0\n");
504 /* The extent entries immediately follow the header, so add 1 to the pointer
505 * and cast it to an extent pointer.
507 extent = (struct ext4_extent *)(ext_hdr + 1);
509 for (i = 0; i < ext_hdr->eh_entries; i++) {
510 fs_block_num = ((off64_t)extent->ee_start_hi << 32) | extent->ee_start_lo;
511 for (j = 0; j < extent->ee_len; j++) {
512 block_list[extent->ee_block+j] = fs_block_num+j;
520 static int get_extent_idx(int fd, struct ext4_extent_header *ext_hdr, unsigned long long *block_list)
523 struct ext4_extent_idx *extent_idx;
524 struct ext4_extent_header *tmp_ext_hdr;
525 off64_t fs_block_num;
526 unsigned char block[MAX_EXT4_BLOCK_SIZE];
529 if (ext_hdr->eh_depth == 0) {
530 critical_error("get_extent_idx called with eh_depth == 0\n");
533 /* The extent entries immediately follow the header, so add 1 to the pointer
534 * and cast it to an extent pointer.
536 extent_idx = (struct ext4_extent_idx *)(ext_hdr + 1);
538 for (i = 0; i < ext_hdr->eh_entries; i++) {
539 fs_block_num = ((off64_t)extent_idx->ei_leaf_hi << 32) | extent_idx->ei_leaf_lo;
540 read_block(fd, fs_block_num, block);
541 tmp_ext_hdr = (struct ext4_extent_header *)block;
543 if (tmp_ext_hdr->eh_depth == 0) {
544 get_extent_ents(fd, tmp_ext_hdr, block_list); /* leaf node, fill in block_list */
546 get_extent_idx(fd, tmp_ext_hdr, block_list); /* recurse down the tree */
553 static int get_block_list_extents(int fd, struct ext4_inode *inode, unsigned long long *block_list)
555 struct ext4_extent_header *extent_hdr;
557 extent_hdr = (struct ext4_extent_header *)inode->i_block;
559 if (extent_hdr->eh_magic != EXT4_EXT_MAGIC) {
560 critical_error("extent header has unexpected magic value 0x%4.4x\n",
561 extent_hdr->eh_magic);
564 if (extent_hdr->eh_depth == 0) {
565 get_extent_ents(fd, (struct ext4_extent_header *)inode->i_block, block_list);
569 get_extent_idx(fd, (struct ext4_extent_header *)inode->i_block, block_list);
574 static int is_entry_dir(int fd, struct ext4_dir_entry_2 *dirp, int pass)
576 struct ext4_inode inode;
579 if (dirp->file_type == EXT4_FT_DIR) {
581 } else if (dirp->file_type == EXT4_FT_UNKNOWN) {
582 /* Somebody was too lazy to fill in the dir entry,
583 * so we have to go fetch it from the inode. Grrr.
585 /* if UPDATE_INODE_NUMS pass and the inode high bit is not
586 * set return false so we don't recurse down the tree that is
587 * already updated. Otherwise, fetch inode, and return answer.
589 if ((pass == UPDATE_INODE_NUMS) && !(dirp->inode & 0x80000000)) {
592 read_inode(fd, (dirp->inode & 0x7fffffff), &inode);
593 if (S_ISDIR(inode.i_mode)) {
602 static int recurse_dir(int fd, struct ext4_inode *inode, char *dirbuf, int dirsize, int mode)
604 unsigned long long *block_list;
605 unsigned int num_blocks;
606 struct ext4_dir_entry_2 *dirp, *prev_dirp = 0;
608 unsigned int i, leftover_space, is_dir;
609 struct ext4_inode tmp_inode;
614 case SANITY_CHECK_PASS:
615 case MARK_INODE_NUMS:
616 case UPDATE_INODE_NUMS:
619 critical_error("recurse_dir() called witn unknown mode!\n");
622 if (dirsize % info.block_size) {
623 critical_error("dirsize %d not a multiple of block_size %d. This is unexpected!\n",
624 dirsize, info.block_size);
627 num_blocks = dirsize / info.block_size;
629 block_list = malloc((num_blocks + 1) * sizeof(*block_list));
630 if (block_list == 0) {
631 critical_error("failed to allocate memory for block_list\n");
634 if (inode->i_flags & EXT4_EXTENTS_FL) {
635 get_block_list_extents(fd, inode, block_list);
637 /* A directory that requires doubly or triply indirect blocks in huge indeed,
638 * and will almost certainly not exist, especially since make_ext4fs only creates
639 * directories with extents, and the kernel will too, but check to make sure the
640 * directory is not that big and give an error if so. Our limit is 12 direct blocks,
641 * plus block_size/4 singly indirect blocks, which for a filesystem with 4K blocks
642 * is a directory 1036 blocks long, or 4,243,456 bytes long! Assuming an average
643 * filename length of 20 (which I think is generous) thats 20 + 8 bytes overhead
644 * per entry, or 151,552 entries in the directory!
646 if (num_blocks > (info.block_size / 4 + EXT4_NDIR_BLOCKS)) {
647 critical_error("Non-extent based directory is too big!\n");
649 get_block_list_indirect(fd, inode, block_list);
652 /* Read in all the blocks for this directory */
653 for (i = 0; i < num_blocks; i++) {
654 read_block(fd, block_list[i], dirbuf + (i * info.block_size));
657 dirp = (struct ext4_dir_entry_2 *)dirbuf;
658 while (dirp < (struct ext4_dir_entry_2 *)(dirbuf + dirsize)) {
659 leftover_space = (char *)(dirbuf + dirsize) - (char *)dirp;
660 if (((mode == SANITY_CHECK_PASS) || (mode == UPDATE_INODE_NUMS)) &&
661 (leftover_space <= 8) && prev_dirp) {
662 /* This is a bug in an older version of make_ext4fs, where it
663 * didn't properly include the rest of the block in rec_len.
664 * Update rec_len on the previous entry to include the rest of
665 * the block and exit the loop.
668 printf("fixing up short rec_len for diretory entry for %s\n", name);
670 prev_dirp->rec_len += leftover_space;
674 if (dirp->inode == 0) {
675 /* This is the last entry in the directory */
679 strncpy(name, dirp->name, dirp->name_len);
680 name[dirp->name_len]='\0';
682 /* Only recurse on pass 2 if the high bit is set.
683 * Otherwise, this inode entry has already been updated
684 * and we'll do the wrong thing. Also don't recurse on . or ..,
685 * and certainly not on non-directories!
687 /* Hrm, looks like filesystems made by fastboot on stingray set the file_type
688 * flag, but the lost+found directory has the type set to Unknown, which
689 * seems to imply I need to read the inode and get it.
691 is_dir = is_entry_dir(fd, dirp, mode);
692 if ( is_dir && (strcmp(name, ".") && strcmp(name, "..")) &&
693 ((mode == SANITY_CHECK_PASS) || (mode == MARK_INODE_NUMS) ||
694 ((mode == UPDATE_INODE_NUMS) && (dirp->inode | 0x80000000))) ) {
695 /* A directory! Recurse! */
696 read_inode(fd, dirp->inode & 0x7fffffff, &tmp_inode);
698 if (!S_ISDIR(tmp_inode.i_mode)) {
699 critical_error("inode %d for name %s does not point to a directory\n",
700 dirp->inode & 0x7fffffff, name);
703 printf("inode %d %s use extents\n", dirp->inode & 0x7fffffff,
704 (tmp_inode.i_flags & EXT4_EXTENTS_FL) ? "does" : "does not");
707 tmp_dirsize = tmp_inode.i_blocks_lo * INODE_BLOCK_SIZE;
709 printf("dir size = %d bytes\n", tmp_dirsize);
712 tmp_dirbuf = malloc(tmp_dirsize);
713 if (tmp_dirbuf == 0) {
714 critical_error("failed to allocate memory for tmp_dirbuf\n");
717 recurse_dir(fd, &tmp_inode, tmp_dirbuf, tmp_dirsize, mode);
724 printf("Directory %s\n", name);
726 printf("Non-directory %s\n", name);
730 /* Process entry based on current mode. Either set high bit or change inode number */
731 if (mode == MARK_INODE_NUMS) {
732 dirp->inode |= 0x80000000;
733 } else if (mode == UPDATE_INODE_NUMS) {
734 if (dirp->inode | 0x80000000) {
735 dirp->inode = compute_new_inum(dirp->inode & 0x7fffffff);
739 /* Point dirp at the next entry */
741 dirp = (struct ext4_dir_entry_2*)((char *)dirp + dirp->rec_len);
744 /* Write out all the blocks for this directory */
745 for (i = 0; i < num_blocks; i++) {
746 write_block(fd, block_list[i], dirbuf + (i * info.block_size));
754 int ext4fixup(char *fsdev)
756 return ext4fixup_internal(fsdev, 0, 0);
759 int ext4fixup_internal(char *fsdev, int v_flag, int n_flag)
762 struct ext4_inode root_inode;
763 unsigned int dirsize;
766 if (setjmp(setjmp_env))
767 return EXIT_FAILURE; /* Handle a call to longjmp() */
772 fd = open(fsdev, O_RDWR);
775 critical_error_errno("failed to open filesystem image");
779 if ((info.feat_incompat & EXT4_FEATURE_INCOMPAT_FILETYPE) == 0) {
780 critical_error("Expected filesystem to have filetype flag set\n");
783 #if 0 // If we have to fix the directory rec_len issue, we can't use this check
784 /* Check to see if the inodes/group is copacetic */
785 if (info.inodes_per_blockgroup % (info.block_size/info.inode_size) == 0) {
786 /* This filesystem has either already been updated, or was
790 printf("%s: filesystem correct, no work to do\n", me);
796 /* Compute what the new value of inodes_per_blockgroup will be when we're done */
797 new_inodes_per_group=ALIGN(info.inodes_per_group,(info.block_size/info.inode_size));
799 read_inode(fd, EXT4_ROOT_INO, &root_inode);
801 if (!S_ISDIR(root_inode.i_mode)) {
802 critical_error("root inode %d does not point to a directory\n", EXT4_ROOT_INO);
805 printf("inode %d %s use extents\n", EXT4_ROOT_INO,
806 (root_inode.i_flags & EXT4_EXTENTS_FL) ? "does" : "does not");
809 dirsize = root_inode.i_blocks_lo * INODE_BLOCK_SIZE;
811 printf("root dir size = %d bytes\n", dirsize);
814 dirbuf = malloc(dirsize);
816 critical_error("failed to allocate memory for dirbuf\n");
819 /* Perform a sanity check pass first, try to catch any errors that will occur
820 * before we actually change anything, so we don't leave a filesystem in a
821 * corrupted, unrecoverable state. Set no_write, make it quiet, and do a recurse
822 * pass and a update_superblock pass. Set flags back to requested state when done.
826 recurse_dir(fd, &root_inode, dirbuf, dirsize, SANITY_CHECK_PASS);
827 update_superblocks_and_bg_desc(fd, STATE_UNSET);
831 if (get_fs_fixup_state(fd) == STATE_UNSET) {
832 set_fs_fixup_state(fd, STATE_MARKING_INUMS);
835 if (get_fs_fixup_state(fd) == STATE_MARKING_INUMS) {
836 if (!recurse_dir(fd, &root_inode, dirbuf, dirsize, MARK_INODE_NUMS)) {
837 set_fs_fixup_state(fd, STATE_UPDATING_INUMS);
841 if (get_fs_fixup_state(fd) == STATE_UPDATING_INUMS) {
842 if (!recurse_dir(fd, &root_inode, dirbuf, dirsize, UPDATE_INODE_NUMS)) {
843 set_fs_fixup_state(fd, STATE_UPDATING_SB);
847 if (get_fs_fixup_state(fd) == STATE_UPDATING_SB) {
848 /* set the new inodes/blockgruop number,
849 * and sets the state back to 0.
851 if (!update_superblocks_and_bg_desc(fd, STATE_UPDATING_SB)) {
852 set_fs_fixup_state(fd, STATE_UNSET);