/*
* Copyright (C) 2010 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "ext4_utils.h"
#include "make_ext4fs.h"
#include "ext4_extents.h"
#include "allocate.h"
#include "ext4fixup.h"
#include <sparse/sparse.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <fcntl.h>
#include <unistd.h>
#ifndef USE_MINGW
#include <sys/mman.h>
#endif
#if defined(__APPLE__) && defined(__MACH__)
#define lseek64 lseek
#define off64_t off_t
#endif
/* The inode block count for a file/directory is in units of 512 byte blocks,
* _NOT_ the filesystem block size!
*/
#define INODE_BLOCK_SIZE 512
#define MAX_EXT4_BLOCK_SIZE 4096
/* The two modes the recurse_dir() can be in */
#define SANITY_CHECK_PASS 1
#define MARK_INODE_NUMS 2
#define UPDATE_INODE_NUMS 3
/* Magic numbers to indicate what state the update process is in */
#define MAGIC_STATE_MARKING_INUMS 0x7000151515565512ll
#define MAGIC_STATE_UPDATING_INUMS 0x6121131211735123ll
#define MAGIC_STATE_UPDATING_SB 0x15e1715151558477ll
/* Internal state variables corresponding to the magic numbers */
#define STATE_UNSET 0
#define STATE_MARKING_INUMS 1
#define STATE_UPDATING_INUMS 2
#define STATE_UPDATING_SB 3
/* Used for automated testing of this programs ability to stop and be restarted wthout error */
static int bail_phase = 0;
static int bail_loc = 0;
static int bail_count = 0;
static int count = 0;
/* global flags */
static int verbose = 0;
static int no_write = 0;
static int new_inodes_per_group = 0;
static int no_write_fixup_state = 0;
static int compute_new_inum(unsigned int old_inum)
{
unsigned int group, offset;
group = (old_inum - 1) / info.inodes_per_group;
offset = (old_inum -1) % info.inodes_per_group;
return (group * new_inodes_per_group) + offset + 1;
}
static int get_fs_fixup_state(int fd)
{
unsigned long long magic;
int ret, len;
if (no_write) {
return no_write_fixup_state;
}
lseek64(fd, 0, SEEK_SET);
len = read(fd, &magic, sizeof(magic));
if (len != sizeof(magic)) {
critical_error("cannot read fixup_state\n");
}
switch (magic) {
case MAGIC_STATE_MARKING_INUMS:
ret = STATE_MARKING_INUMS;
break;
case MAGIC_STATE_UPDATING_INUMS:
ret = STATE_UPDATING_INUMS;
break;
case MAGIC_STATE_UPDATING_SB:
ret = STATE_UPDATING_SB;
break;
default:
ret = STATE_UNSET;
}
return ret;
}
static int set_fs_fixup_state(int fd, int state)
{
unsigned long long magic;
struct ext4_super_block sb;
int len;
if (no_write) {
no_write_fixup_state = state;
return 0;
}
switch (state) {
case STATE_MARKING_INUMS:
magic = MAGIC_STATE_MARKING_INUMS;
break;
case STATE_UPDATING_INUMS:
magic = MAGIC_STATE_UPDATING_INUMS;
break;
case STATE_UPDATING_SB:
magic = MAGIC_STATE_UPDATING_SB;
break;
case STATE_UNSET:
default:
magic = 0ll;
break;
}
lseek64(fd, 0, SEEK_SET);
len = write(fd, &magic, sizeof(magic));
if (len != sizeof(magic)) {
critical_error("cannot write fixup_state\n");
}
read_sb(fd, &sb);
if (magic) {
/* If we are in the process of updating the filesystem, make it unmountable */
sb.s_desc_size |= 1;
} else {
/* we are done, so make the filesystem mountable again */
sb.s_desc_size &= ~1;
}
if (!no_write) {
write_sb(fd, 1024, &sb);
}
return 0;
}
static int read_inode(int fd, unsigned int inum, struct ext4_inode *inode)
{
unsigned int bg_num, bg_offset;
off64_t inode_offset;
int len;
bg_num = (inum-1) / info.inodes_per_group;
bg_offset = (inum-1) % info.inodes_per_group;
inode_offset = ((unsigned long long)aux_info.bg_desc[bg_num].bg_inode_table * info.block_size) +
(bg_offset * info.inode_size);
if (lseek64(fd, inode_offset, SEEK_SET) < 0) {
critical_error_errno("failed to seek to inode %d\n", inum);
}
len=read(fd, inode, sizeof(*inode));
if (len != sizeof(*inode)) {
critical_error_errno("failed to read inode %d\n", inum);
}
return 0;
}
static int read_block(int fd, unsigned long long block_num, void *block)
{
off64_t off;
unsigned int len;
off = block_num * info.block_size;
if (lseek64(fd, off, SEEK_SET) , 0) {
critical_error_errno("failed to seek to block %lld\n", block_num);
}
len=read(fd, block, info.block_size);
if (len != info.block_size) {
critical_error_errno("failed to read block %lld\n", block_num);
}
return 0;
}
static int write_block(int fd, unsigned long long block_num, void *block)
{
off64_t off;
unsigned int len;
if (no_write) {
return 0;
}
off = block_num * info.block_size;
if (lseek64(fd, off, SEEK_SET) < 0) {
critical_error_errno("failed to seek to block %lld\n", block_num);
}
len=write(fd, block, info.block_size);
if (len != info.block_size) {
critical_error_errno("failed to write block %lld\n", block_num);
}
return 0;
}
static void check_inode_bitmap(int fd, unsigned int bg_num)
{
unsigned int inode_bitmap_block_num;
unsigned char block[MAX_EXT4_BLOCK_SIZE];
int i, bitmap_updated = 0;
/* Using the bg_num, aux_info.bg_desc[], info.inodes_per_group and
* new_inodes_per_group, retrieve the inode bitmap, and make sure
* the bits between the old and new size are clear
*/
inode_bitmap_block_num = aux_info.bg_desc[bg_num].bg_inode_bitmap;
read_block(fd, inode_bitmap_block_num, block);
for (i = info.inodes_per_group; i < new_inodes_per_group; i++) {
if (bitmap_get_bit(block, i)) {
bitmap_clear_bit(block, i);
bitmap_updated = 1;
}
}
if (bitmap_updated) {
if (verbose) {
printf("Warning: updated inode bitmap for block group %d\n", bg_num);
}
write_block(fd, inode_bitmap_block_num, block);
}
return;
}
/* Update the superblock and bgdesc of the specified block group */
static int update_superblocks_and_bg_desc(int fd, int state)
{
off64_t ret;
struct ext4_super_block sb;
unsigned int num_block_groups, total_new_inodes;
unsigned int i;
read_sb(fd, &sb);
/* Compute how many more inodes are now available */
num_block_groups = DIV_ROUND_UP(aux_info.len_blocks, info.blocks_per_group);
total_new_inodes = num_block_groups * (new_inodes_per_group - sb.s_inodes_per_group);
if (verbose) {
printf("created %d additional inodes\n", total_new_inodes);
}
/* Update the free inodes count in each block group descriptor */
for (i = 0; i < num_block_groups; i++) {
if (state == STATE_UPDATING_SB) {
aux_info.bg_desc[i].bg_free_inodes_count += (new_inodes_per_group - sb.s_inodes_per_group);
}
check_inode_bitmap(fd, i);
}
/* First some sanity checks */
if ((sb.s_inodes_count + total_new_inodes) != (new_inodes_per_group * num_block_groups)) {
critical_error("Failed sanity check on new inode count\n");
}
if (new_inodes_per_group % (info.block_size/info.inode_size)) {
critical_error("Failed sanity check on new inode per group alignment\n");
}
/* Update the free inodes count in the superblock */
sb.s_inodes_count += total_new_inodes;
sb.s_free_inodes_count += total_new_inodes;
sb.s_inodes_per_group = new_inodes_per_group;
for (i = 0; i < aux_info.groups; i++) {
if (ext4_bg_has_super_block(i)) {
unsigned int sb_offset;
if (i == 0) {
/* The first superblock is offset by 1K to leave room for boot sectors */
sb_offset = 1024;
} else {
sb_offset = 0;
}
sb.s_block_group_nr = i;
/* Don't write out the backup superblocks with the bit set in the s_desc_size
* which prevents the filesystem from mounting. The bit for the primary
* superblock will be cleared on the final call to set_fs_fixup_state() */
if (i != 0) {
sb.s_desc_size &= ~1;
}
if (!no_write) {
write_sb(fd,
(unsigned long long)i
* info.blocks_per_group * info.block_size
+ sb_offset,
&sb);
}
ret = lseek64(fd, ((unsigned long long)i * info.blocks_per_group * info.block_size) +
(info.block_size * (aux_info.first_data_block + 1)), SEEK_SET);
if (ret < 0)
critical_error_errno("failed to seek to block group descriptors");
if (!no_write) {
ret = write(fd, aux_info.bg_desc, info.block_size * aux_info.bg_desc_blocks);
if (ret < 0)
critical_error_errno("failed to write block group descriptors");
if (ret != (int)info.block_size * (int)aux_info.bg_desc_blocks)
critical_error("failed to write all of block group descriptors");
}
}
if ((bail_phase == 4) && ((unsigned int)bail_count == i)) {
critical_error("bailing at phase 4\n");
}
}
return 0;
}
static int get_direct_blocks(struct ext4_inode *inode, unsigned long long *block_list,
unsigned int *count)
{
unsigned int i = 0;
unsigned int ret = 0;
unsigned int sectors_per_block;
sectors_per_block = info.block_size / INODE_BLOCK_SIZE;
while ((i < (inode->i_blocks_lo / sectors_per_block)) && (i < EXT4_NDIR_BLOCKS)) {
block_list[i] = inode->i_block[i];
i++;
}
*count += i;
if ((inode->i_blocks_lo / sectors_per_block) > EXT4_NDIR_BLOCKS) {
ret = 1;
}
return ret;
}
static int get_indirect_blocks(int fd, struct ext4_inode *inode,
unsigned long long *block_list, unsigned int *count)
{
unsigned int i;
unsigned int *indirect_block;
unsigned int sectors_per_block;
sectors_per_block = info.block_size / INODE_BLOCK_SIZE;
indirect_block = (unsigned int *)malloc(info.block_size);
if (indirect_block == 0) {
critical_error("failed to allocate memory for indirect_block\n");
}
read_block(fd, inode->i_block[EXT4_NDIR_BLOCKS], indirect_block);
for(i = 0; i < (inode->i_blocks_lo / sectors_per_block - EXT4_NDIR_BLOCKS); i++) {
block_list[EXT4_NDIR_BLOCKS+i] = indirect_block[i];
}
*count += i;
free(indirect_block);
return 0;
}
static int get_block_list_indirect(int fd, struct ext4_inode *inode, unsigned long long *block_list)
{
unsigned int count=0;
if (get_direct_blocks(inode, block_list, &count)) {
get_indirect_blocks(fd, inode, block_list, &count);
}
return count;
}
static int get_extent_ents(struct ext4_extent_header *ext_hdr, unsigned long long *block_list)
{
int i, j;
struct ext4_extent *extent;
off64_t fs_block_num;
if (ext_hdr->eh_depth != 0) {
critical_error("get_extent_ents called with eh_depth != 0\n");
}
/* The extent entries immediately follow the header, so add 1 to the pointer
* and cast it to an extent pointer.
*/
extent = (struct ext4_extent *)(ext_hdr + 1);
for (i = 0; i < ext_hdr->eh_entries; i++) {
fs_block_num = ((off64_t)extent->ee_start_hi << 32) | extent->ee_start_lo;
for (j = 0; j < extent->ee_len; j++) {
block_list[extent->ee_block+j] = fs_block_num+j;
}
extent++;
}
return 0;
}
static int get_extent_idx(int fd, struct ext4_extent_header *ext_hdr, unsigned long long *block_list)
{
int i;
struct ext4_extent_idx *extent_idx;
struct ext4_extent_header *tmp_ext_hdr;
off64_t fs_block_num;
unsigned char block[MAX_EXT4_BLOCK_SIZE];
/* Sanity check */
if (ext_hdr->eh_depth == 0) {
critical_error("get_extent_idx called with eh_depth == 0\n");
}
/* The extent entries immediately follow the header, so add 1 to the pointer
* and cast it to an extent pointer.
*/
extent_idx = (struct ext4_extent_idx *)(ext_hdr + 1);
for (i = 0; i < ext_hdr->eh_entries; i++) {
fs_block_num = ((off64_t)extent_idx->ei_leaf_hi << 32) | extent_idx->ei_leaf_lo;
read_block(fd, fs_block_num, block);
tmp_ext_hdr = (struct ext4_extent_header *)block;
if (tmp_ext_hdr->eh_depth == 0) {
get_extent_ents(tmp_ext_hdr, block_list); /* leaf node, fill in block_list */
} else {
get_extent_idx(fd, tmp_ext_hdr, block_list); /* recurse down the tree */
}
}
return 0;
}
static int get_block_list_extents(int fd, struct ext4_inode *inode, unsigned long long *block_list)
{
struct ext4_extent_header *extent_hdr;
extent_hdr = (struct ext4_extent_header *)inode->i_block;
if (extent_hdr->eh_magic != EXT4_EXT_MAGIC) {
critical_error("extent header has unexpected magic value 0x%4.4x\n",
extent_hdr->eh_magic);
}
if (extent_hdr->eh_depth == 0) {
get_extent_ents((struct ext4_extent_header *)inode->i_block, block_list);
return 0;
}
get_extent_idx(fd, (struct ext4_extent_header *)inode->i_block, block_list);
return 0;
}
static int is_entry_dir(int fd, struct ext4_dir_entry_2 *dirp, int pass)
{
struct ext4_inode inode;
int ret = 0;
if (dirp->file_type == EXT4_FT_DIR) {
ret = 1;
} else if (dirp->file_type == EXT4_FT_UNKNOWN) {
/* Somebody was too lazy to fill in the dir entry,
* so we have to go fetch it from the inode. Grrr.
*/
/* if UPDATE_INODE_NUMS pass and the inode high bit is not
* set return false so we don't recurse down the tree that is
* already updated. Otherwise, fetch inode, and return answer.
*/
if ((pass == UPDATE_INODE_NUMS) && !(dirp->inode & 0x80000000)) {
ret = 0;
} else {
read_inode(fd, (dirp->inode & 0x7fffffff), &inode);
if (S_ISDIR(inode.i_mode)) {
ret = 1;
}
}
}
return ret;
}
static int recurse_dir(int fd, struct ext4_inode *inode, char *dirbuf, int dirsize, int mode)
{
unsigned long long *block_list;
unsigned int num_blocks;
struct ext4_dir_entry_2 *dirp, *prev_dirp = 0;
char name[256];
unsigned int i, leftover_space, is_dir;
struct ext4_inode tmp_inode;
int tmp_dirsize;
char *tmp_dirbuf;
switch (mode) {
case SANITY_CHECK_PASS:
case MARK_INODE_NUMS:
case UPDATE_INODE_NUMS:
break;
default:
critical_error("recurse_dir() called witn unknown mode!\n");
}
if (dirsize % info.block_size) {
critical_error("dirsize %d not a multiple of block_size %d. This is unexpected!\n",
dirsize, info.block_size);
}
num_blocks = dirsize / info.block_size;
block_list = malloc((num_blocks + 1) * sizeof(*block_list));
if (block_list == 0) {
critical_error("failed to allocate memory for block_list\n");
}
if (inode->i_flags & EXT4_EXTENTS_FL) {
get_block_list_extents(fd, inode, block_list);
} else {
/* A directory that requires doubly or triply indirect blocks in huge indeed,
* and will almost certainly not exist, especially since make_ext4fs only creates
* directories with extents, and the kernel will too, but check to make sure the
* directory is not that big and give an error if so. Our limit is 12 direct blocks,
* plus block_size/4 singly indirect blocks, which for a filesystem with 4K blocks
* is a directory 1036 blocks long, or 4,243,456 bytes long! Assuming an average
* filename length of 20 (which I think is generous) thats 20 + 8 bytes overhead
* per entry, or 151,552 entries in the directory!
*/
if (num_blocks > (info.block_size / 4 + EXT4_NDIR_BLOCKS)) {
critical_error("Non-extent based directory is too big!\n");
}
get_block_list_indirect(fd, inode, block_list);
}
/* Read in all the blocks for this directory */
for (i = 0; i < num_blocks; i++) {
read_block(fd, block_list[i], dirbuf + (i * info.block_size));
}
dirp = (struct ext4_dir_entry_2 *)dirbuf;
while (dirp < (struct ext4_dir_entry_2 *)(dirbuf + dirsize)) {
count++;
leftover_space = (char *)(dirbuf + dirsize) - (char *)dirp;
if (((mode == SANITY_CHECK_PASS) || (mode == UPDATE_INODE_NUMS)) &&
(leftover_space <= 8) && prev_dirp) {
/* This is a bug in an older version of make_ext4fs, where it
* didn't properly include the rest of the block in rec_len.
* Update rec_len on the previous entry to include the rest of
* the block and exit the loop.
*/
if (verbose) {
printf("fixing up short rec_len for diretory entry for %s\n", name);
}
prev_dirp->rec_len += leftover_space;
break;
}
if (dirp->inode == 0) {
/* This is the last entry in the directory */
break;
}
strncpy(name, dirp->name, dirp->name_len);
name[dirp->name_len]='\0';
/* Only recurse on pass UPDATE_INODE_NUMS if the high bit is set.
* Otherwise, this inode entry has already been updated
* and we'll do the wrong thing. Also don't recurse on . or ..,
* and certainly not on non-directories!
*/
/* Hrm, looks like filesystems made by fastboot on stingray set the file_type
* flag, but the lost+found directory has the type set to Unknown, which
* seems to imply I need to read the inode and get it.
*/
is_dir = is_entry_dir(fd, dirp, mode);
if ( is_dir && (strcmp(name, ".") && strcmp(name, "..")) &&
((mode == SANITY_CHECK_PASS) || (mode == MARK_INODE_NUMS) ||
((mode == UPDATE_INODE_NUMS) && (dirp->inode & 0x80000000))) ) {
/* A directory! Recurse! */
read_inode(fd, dirp->inode & 0x7fffffff, &tmp_inode);
if (!S_ISDIR(tmp_inode.i_mode)) {
critical_error("inode %d for name %s does not point to a directory\n",
dirp->inode & 0x7fffffff, name);
}
if (verbose) {
printf("inode %d %s use extents\n", dirp->inode & 0x7fffffff,
(tmp_inode.i_flags & EXT4_EXTENTS_FL) ? "does" : "does not");
}
tmp_dirsize = tmp_inode.i_blocks_lo * INODE_BLOCK_SIZE;
if (verbose) {
printf("dir size = %d bytes\n", tmp_dirsize);
}
tmp_dirbuf = malloc(tmp_dirsize);
if (tmp_dirbuf == 0) {
critical_error("failed to allocate memory for tmp_dirbuf\n");
}
recurse_dir(fd, &tmp_inode, tmp_dirbuf, tmp_dirsize, mode);
free(tmp_dirbuf);
}
if (verbose) {
if (is_dir) {
printf("Directory %s\n", name);
} else {
printf("Non-directory %s\n", name);
}
}
/* Process entry based on current mode. Either set high bit or change inode number */
if (mode == MARK_INODE_NUMS) {
dirp->inode |= 0x80000000;
} else if (mode == UPDATE_INODE_NUMS) {
if (dirp->inode & 0x80000000) {
dirp->inode = compute_new_inum(dirp->inode & 0x7fffffff);
}
}
if ((bail_phase == mode) && (bail_loc == 1) && (bail_count == count)) {
critical_error("Bailing at phase %d, loc 1 and count %d\n", mode, count);
}
/* Point dirp at the next entry */
prev_dirp = dirp;
dirp = (struct ext4_dir_entry_2*)((char *)dirp + dirp->rec_len);
}
/* Write out all the blocks for this directory */
for (i = 0; i < num_blocks; i++) {
write_block(fd, block_list[i], dirbuf + (i * info.block_size));
if ((bail_phase == mode) && (bail_loc == 2) && (bail_count <= count)) {
critical_error("Bailing at phase %d, loc 2 and count %d\n", mode, count);
}
}
free(block_list);
return 0;
}
int ext4fixup(char *fsdev)
{
return ext4fixup_internal(fsdev, 0, 0, 0, 0, 0);
}
int ext4fixup_internal(char *fsdev, int v_flag, int n_flag,
int stop_phase, int stop_loc, int stop_count)
{
int fd;
struct ext4_inode root_inode;
unsigned int dirsize;
char *dirbuf;
if (setjmp(setjmp_env))
return EXIT_FAILURE; /* Handle a call to longjmp() */
verbose = v_flag;
no_write = n_flag;
bail_phase = stop_phase;
bail_loc = stop_loc;
bail_count = stop_count;
fd = open(fsdev, O_RDWR);
if (fd < 0)
critical_error_errno("failed to open filesystem image");
read_ext(fd, verbose);
if (info.feat_incompat & EXT4_FEATURE_INCOMPAT_RECOVER) {
critical_error("Filesystem needs recovery first, mount and unmount to do that\n");
}
/* Clear the low bit which is set while this tool is in progress.
* If the tool crashes, it will still be set when we restart.
* The low bit is set to make the filesystem unmountable while
* it is being fixed up. Also allow 0, which means the old ext2
* size is in use.
*/
if (((aux_info.sb->s_desc_size & ~1) != sizeof(struct ext2_group_desc)) &&
((aux_info.sb->s_desc_size & ~1) != 0))
critical_error("error: bg_desc_size != sizeof(struct ext2_group_desc)\n");
if ((info.feat_incompat & EXT4_FEATURE_INCOMPAT_FILETYPE) == 0) {
critical_error("Expected filesystem to have filetype flag set\n");
}
#if 0 // If we have to fix the directory rec_len issue, we can't use this check
/* Check to see if the inodes/group is copacetic */
if (info.inodes_per_blockgroup % (info.block_size/info.inode_size) == 0) {
/* This filesystem has either already been updated, or was
* made correctly.
*/
if (verbose) {
printf("%s: filesystem correct, no work to do\n", me);
}
exit(0);
}
#endif
/* Compute what the new value of inodes_per_blockgroup will be when we're done */
new_inodes_per_group=EXT4_ALIGN(info.inodes_per_group,(info.block_size/info.inode_size));
read_inode(fd, EXT4_ROOT_INO, &root_inode);
if (!S_ISDIR(root_inode.i_mode)) {
critical_error("root inode %d does not point to a directory\n", EXT4_ROOT_INO);
}
if (verbose) {
printf("inode %d %s use extents\n", EXT4_ROOT_INO,
(root_inode.i_flags & EXT4_EXTENTS_FL) ? "does" : "does not");
}
dirsize = root_inode.i_blocks_lo * INODE_BLOCK_SIZE;
if (verbose) {
printf("root dir size = %d bytes\n", dirsize);
}
dirbuf = malloc(dirsize);
if (dirbuf == 0) {
critical_error("failed to allocate memory for dirbuf\n");
}
/* Perform a sanity check pass first, try to catch any errors that will occur
* before we actually change anything, so we don't leave a filesystem in a
* corrupted, unrecoverable state. Set no_write, make it quiet, and do a recurse
* pass and a update_superblock pass. Set flags back to requested state when done.
* Only perform sanity check if the state is unset. If the state is _NOT_ unset,
* then the tool has already been run and interrupted, and it presumably ran and
* passed sanity checked before it got interrupted. It is _NOT_ safe to run sanity
* check if state is unset because it assumes inodes are to be computed using the
* old inodes/group, but some inode numbers may be updated to the new number.
*/
if (get_fs_fixup_state(fd) == STATE_UNSET) {
verbose = 0;
no_write = 1;
recurse_dir(fd, &root_inode, dirbuf, dirsize, SANITY_CHECK_PASS);
update_superblocks_and_bg_desc(fd, STATE_UNSET);
verbose = v_flag;
no_write = n_flag;
set_fs_fixup_state(fd, STATE_MARKING_INUMS);
}
if (get_fs_fixup_state(fd) == STATE_MARKING_INUMS) {
count = 0; /* Reset debugging counter */
if (!recurse_dir(fd, &root_inode, dirbuf, dirsize, MARK_INODE_NUMS)) {
set_fs_fixup_state(fd, STATE_UPDATING_INUMS);
}
}
if (get_fs_fixup_state(fd) == STATE_UPDATING_INUMS) {
count = 0; /* Reset debugging counter */
if (!recurse_dir(fd, &root_inode, dirbuf, dirsize, UPDATE_INODE_NUMS)) {
set_fs_fixup_state(fd, STATE_UPDATING_SB);
}
}
if (get_fs_fixup_state(fd) == STATE_UPDATING_SB) {
/* set the new inodes/blockgroup number,
* and sets the state back to 0.
*/
if (!update_superblocks_and_bg_desc(fd, STATE_UPDATING_SB)) {
set_fs_fixup_state(fd, STATE_UNSET);
}
}
close(fd);
return 0;
}