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busybox/e2fsprogs/e2fsck/rehash.c
Mike Frysinger 51a43b47fe import the very fat e2fsck/fsck applets
2005-09-24 07:11:16 +00:00

841 lines
21 KiB
C
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/*
* rehash.c --- rebuild hash tree directories
*
* Copyright (C) 2002 Theodore Ts'o
*
* %Begin-Header%
* This file may be redistributed under the terms of the GNU Public
* License.
* %End-Header%
*
* This algorithm is designed for simplicity of implementation and to
* pack the directory as much as possible. It however requires twice
* as much memory as the size of the directory. The maximum size
* directory supported using a 4k blocksize is roughly a gigabyte, and
* so there may very well be problems with machines that don't have
* virtual memory, and obscenely large directories.
*
* An alternate algorithm which is much more disk intensive could be
* written, and probably will need to be written in the future. The
* design goals of such an algorithm are: (a) use (roughly) constant
* amounts of memory, no matter how large the directory, (b) the
* directory must be safe at all times, even if e2fsck is interrupted
* in the middle, (c) we must use minimal amounts of extra disk
* blocks. This pretty much requires an incremental approach, where
* we are reading from one part of the directory, and inserting into
* the front half. So the algorithm will have to keep track of a
* moving block boundary between the new tree and the old tree, and
* files will need to be moved from the old directory and inserted
* into the new tree. If the new directory requires space which isn't
* yet available, blocks from the beginning part of the old directory
* may need to be moved to the end of the directory to make room for
* the new tree:
*
* --------------------------------------------------------
* | new tree | | old tree |
* --------------------------------------------------------
* ^ ptr ^ptr
* tail new head old
*
* This is going to be a pain in the tuckus to implement, and will
* require a lot more disk accesses. So I'm going to skip it for now;
* it's only really going to be an issue for really, really big
* filesystems (when we reach the level of tens of millions of files
* in a single directory). It will probably be easier to simply
* require that e2fsck use VM first.
*/
#include <string.h>
#include <ctype.h>
#include <errno.h>
#include "e2fsck.h"
#include "problem.h"
struct fill_dir_struct {
char *buf;
struct ext2_inode *inode;
int err;
e2fsck_t ctx;
struct hash_entry *harray;
int max_array, num_array;
int dir_size;
int compress;
ino_t parent;
};
struct hash_entry {
ext2_dirhash_t hash;
ext2_dirhash_t minor_hash;
struct ext2_dir_entry *dir;
};
struct out_dir {
int num;
int max;
char *buf;
ext2_dirhash_t *hashes;
};
static int fill_dir_block(ext2_filsys fs,
blk_t *block_nr,
e2_blkcnt_t blockcnt,
blk_t ref_block EXT2FS_ATTR((unused)),
int ref_offset EXT2FS_ATTR((unused)),
void *priv_data)
{
struct fill_dir_struct *fd = (struct fill_dir_struct *) priv_data;
struct hash_entry *new_array, *ent;
struct ext2_dir_entry *dirent;
char *dir;
unsigned int offset, dir_offset;
if (blockcnt < 0)
return 0;
offset = blockcnt * fs->blocksize;
if (offset + fs->blocksize > fd->inode->i_size) {
fd->err = EXT2_ET_DIR_CORRUPTED;
return BLOCK_ABORT;
}
dir = (fd->buf+offset);
if (HOLE_BLKADDR(*block_nr)) {
memset(dir, 0, fs->blocksize);
dirent = (struct ext2_dir_entry *) dir;
dirent->rec_len = fs->blocksize;
} else {
fd->err = ext2fs_read_dir_block(fs, *block_nr, dir);
if (fd->err)
return BLOCK_ABORT;
}
/* While the directory block is "hot", index it. */
dir_offset = 0;
while (dir_offset < fs->blocksize) {
dirent = (struct ext2_dir_entry *) (dir + dir_offset);
if (((dir_offset + dirent->rec_len) > fs->blocksize) ||
(dirent->rec_len < 8) ||
((dirent->rec_len % 4) != 0) ||
(((dirent->name_len & 0xFF)+8) > dirent->rec_len)) {
fd->err = EXT2_ET_DIR_CORRUPTED;
return BLOCK_ABORT;
}
dir_offset += dirent->rec_len;
if (dirent->inode == 0)
continue;
if (!fd->compress && ((dirent->name_len&0xFF) == 1) &&
(dirent->name[0] == '.'))
continue;
if (!fd->compress && ((dirent->name_len&0xFF) == 2) &&
(dirent->name[0] == '.') && (dirent->name[1] == '.')) {
fd->parent = dirent->inode;
continue;
}
if (fd->num_array >= fd->max_array) {
new_array = realloc(fd->harray,
sizeof(struct hash_entry) * (fd->max_array+500));
if (!new_array) {
fd->err = ENOMEM;
return BLOCK_ABORT;
}
fd->harray = new_array;
fd->max_array += 500;
}
ent = fd->harray + fd->num_array++;
ent->dir = dirent;
fd->dir_size += EXT2_DIR_REC_LEN(dirent->name_len & 0xFF);
if (fd->compress)
ent->hash = ent->minor_hash = 0;
else {
fd->err = ext2fs_dirhash(fs->super->s_def_hash_version,
dirent->name,
dirent->name_len & 0xFF,
fs->super->s_hash_seed,
&ent->hash, &ent->minor_hash);
if (fd->err)
return BLOCK_ABORT;
}
}
return 0;
}
/* Used for sorting the hash entry */
static EXT2_QSORT_TYPE name_cmp(const void *a, const void *b)
{
const struct hash_entry *he_a = (const struct hash_entry *) a;
const struct hash_entry *he_b = (const struct hash_entry *) b;
int ret;
int min_len;
min_len = he_a->dir->name_len;
if (min_len > he_b->dir->name_len)
min_len = he_b->dir->name_len;
ret = strncmp(he_a->dir->name, he_b->dir->name, min_len);
if (ret == 0) {
if (he_a->dir->name_len > he_b->dir->name_len)
ret = 1;
else if (he_a->dir->name_len < he_b->dir->name_len)
ret = -1;
else
ret = he_b->dir->inode - he_a->dir->inode;
}
return ret;
}
/* Used for sorting the hash entry */
static EXT2_QSORT_TYPE hash_cmp(const void *a, const void *b)
{
const struct hash_entry *he_a = (const struct hash_entry *) a;
const struct hash_entry *he_b = (const struct hash_entry *) b;
int ret;
if (he_a->hash > he_b->hash)
ret = 1;
else if (he_a->hash < he_b->hash)
ret = -1;
else {
if (he_a->minor_hash > he_b->minor_hash)
ret = 1;
else if (he_a->minor_hash < he_b->minor_hash)
ret = -1;
else
ret = name_cmp(a, b);
}
return ret;
}
static errcode_t alloc_size_dir(ext2_filsys fs, struct out_dir *outdir,
int blocks)
{
void *new_mem;
if (outdir->max) {
new_mem = realloc(outdir->buf, blocks * fs->blocksize);
if (!new_mem)
return ENOMEM;
outdir->buf = new_mem;
new_mem = realloc(outdir->hashes,
blocks * sizeof(ext2_dirhash_t));
if (!new_mem)
return ENOMEM;
outdir->hashes = new_mem;
} else {
outdir->buf = malloc(blocks * fs->blocksize);
outdir->hashes = malloc(blocks * sizeof(ext2_dirhash_t));
outdir->num = 0;
}
outdir->max = blocks;
return 0;
}
static void free_out_dir(struct out_dir *outdir)
{
if (outdir->buf)
free(outdir->buf);
if (outdir->hashes)
free(outdir->hashes);
outdir->max = 0;
outdir->num =0;
}
static errcode_t get_next_block(ext2_filsys fs, struct out_dir *outdir,
char ** ret)
{
errcode_t retval;
if (outdir->num >= outdir->max) {
retval = alloc_size_dir(fs, outdir, outdir->max + 50);
if (retval)
return retval;
}
*ret = outdir->buf + (outdir->num++ * fs->blocksize);
memset(*ret, 0, fs->blocksize);
return 0;
}
/*
* This function is used to make a unique filename. We do this by
* appending ~0, and then incrementing the number. However, we cannot
* expand the length of the filename beyond the padding available in
* the directory entry.
*/
static void mutate_name(char *str, __u16 *len)
{
int i;
__u16 l = *len & 0xFF, h = *len & 0xff00;
/*
* First check to see if it looks the name has been mutated
* already
*/
for (i = l-1; i > 0; i--) {
if (!isdigit(str[i]))
break;
}
if ((i == l-1) || (str[i] != '~')) {
if (((l-1) & 3) < 2)
l += 2;
else
l = (l+3) & ~3;
str[l-2] = '~';
str[l-1] = '0';
*len = l | h;
return;
}
for (i = l-1; i >= 0; i--) {
if (isdigit(str[i])) {
if (str[i] == '9')
str[i] = '0';
else {
str[i]++;
return;
}
continue;
}
if (i == 1) {
if (str[0] == 'z')
str[0] = 'A';
else if (str[0] == 'Z') {
str[0] = '~';
str[1] = '0';
} else
str[0]++;
} else if (i > 0) {
str[i] = '1';
str[i-1] = '~';
} else {
if (str[0] == '~')
str[0] = 'a';
else
str[0]++;
}
break;
}
}
static int duplicate_search_and_fix(e2fsck_t ctx, ext2_filsys fs,
ext2_ino_t ino,
struct fill_dir_struct *fd)
{
struct problem_context pctx;
struct hash_entry *ent, *prev;
int i, j;
int fixed = 0;
char new_name[256];
__u16 new_len;
clear_problem_context(&pctx);
pctx.ino = ino;
for (i=1; i < fd->num_array; i++) {
ent = fd->harray + i;
prev = ent - 1;
if (!ent->dir->inode ||
((ent->dir->name_len & 0xFF) !=
(prev->dir->name_len & 0xFF)) ||
(strncmp(ent->dir->name, prev->dir->name,
ent->dir->name_len & 0xFF)))
continue;
pctx.dirent = ent->dir;
if ((ent->dir->inode == prev->dir->inode) &&
fix_problem(ctx, PR_2_DUPLICATE_DIRENT, &pctx)) {
e2fsck_adjust_inode_count(ctx, ent->dir->inode, -1);
ent->dir->inode = 0;
fixed++;
continue;
}
memcpy(new_name, ent->dir->name, ent->dir->name_len & 0xFF);
new_len = ent->dir->name_len;
mutate_name(new_name, &new_len);
for (j=0; j < fd->num_array; j++) {
if ((i==j) ||
((ent->dir->name_len & 0xFF) !=
(fd->harray[j].dir->name_len & 0xFF)) ||
(strncmp(new_name, fd->harray[j].dir->name,
new_len & 0xFF)))
continue;
mutate_name(new_name, &new_len);
j = -1;
}
new_name[new_len & 0xFF] = 0;
pctx.str = new_name;
if (fix_problem(ctx, PR_2_NON_UNIQUE_FILE, &pctx)) {
memcpy(ent->dir->name, new_name, new_len & 0xFF);
ent->dir->name_len = new_len;
ext2fs_dirhash(fs->super->s_def_hash_version,
ent->dir->name,
ent->dir->name_len & 0xFF,
fs->super->s_hash_seed,
&ent->hash, &ent->minor_hash);
fixed++;
}
}
return fixed;
}
static errcode_t copy_dir_entries(ext2_filsys fs,
struct fill_dir_struct *fd,
struct out_dir *outdir)
{
errcode_t retval;
char *block_start;
struct hash_entry *ent;
struct ext2_dir_entry *dirent;
int i, rec_len, left;
ext2_dirhash_t prev_hash;
int offset;
outdir->max = 0;
retval = alloc_size_dir(fs, outdir,
(fd->dir_size / fs->blocksize) + 2);
if (retval)
return retval;
outdir->num = fd->compress ? 0 : 1;
offset = 0;
outdir->hashes[0] = 0;
prev_hash = 1;
if ((retval = get_next_block(fs, outdir, &block_start)))
return retval;
dirent = (struct ext2_dir_entry *) block_start;
left = fs->blocksize;
for (i=0; i < fd->num_array; i++) {
ent = fd->harray + i;
if (ent->dir->inode == 0)
continue;
rec_len = EXT2_DIR_REC_LEN(ent->dir->name_len & 0xFF);
if (rec_len > left) {
if (left)
dirent->rec_len += left;
if ((retval = get_next_block(fs, outdir,
&block_start)))
return retval;
offset = 0;
}
left = fs->blocksize - offset;
dirent = (struct ext2_dir_entry *) (block_start + offset);
if (offset == 0) {
if (ent->hash == prev_hash)
outdir->hashes[outdir->num-1] = ent->hash | 1;
else
outdir->hashes[outdir->num-1] = ent->hash;
}
dirent->inode = ent->dir->inode;
dirent->name_len = ent->dir->name_len;
dirent->rec_len = rec_len;
memcpy(dirent->name, ent->dir->name, dirent->name_len & 0xFF);
offset += rec_len;
left -= rec_len;
if (left < 12) {
dirent->rec_len += left;
offset += left;
left = 0;
}
prev_hash = ent->hash;
}
if (left)
dirent->rec_len += left;
return 0;
}
static struct ext2_dx_root_info *set_root_node(ext2_filsys fs, char *buf,
ext2_ino_t ino, ext2_ino_t parent)
{
struct ext2_dir_entry *dir;
struct ext2_dx_root_info *root;
struct ext2_dx_countlimit *limits;
int filetype = 0;
if (fs->super->s_feature_incompat & EXT2_FEATURE_INCOMPAT_FILETYPE)
filetype = EXT2_FT_DIR << 8;
memset(buf, 0, fs->blocksize);
dir = (struct ext2_dir_entry *) buf;
dir->inode = ino;
dir->name[0] = '.';
dir->name_len = 1 | filetype;
dir->rec_len = 12;
dir = (struct ext2_dir_entry *) (buf + 12);
dir->inode = parent;
dir->name[0] = '.';
dir->name[1] = '.';
dir->name_len = 2 | filetype;
dir->rec_len = fs->blocksize - 12;
root = (struct ext2_dx_root_info *) (buf+24);
root->reserved_zero = 0;
root->hash_version = fs->super->s_def_hash_version;
root->info_length = 8;
root->indirect_levels = 0;
root->unused_flags = 0;
limits = (struct ext2_dx_countlimit *) (buf+32);
limits->limit = (fs->blocksize - 32) / sizeof(struct ext2_dx_entry);
limits->count = 0;
return root;
}
static struct ext2_dx_entry *set_int_node(ext2_filsys fs, char *buf)
{
struct ext2_dir_entry *dir;
struct ext2_dx_countlimit *limits;
memset(buf, 0, fs->blocksize);
dir = (struct ext2_dir_entry *) buf;
dir->inode = 0;
dir->rec_len = fs->blocksize;
limits = (struct ext2_dx_countlimit *) (buf+8);
limits->limit = (fs->blocksize - 8) / sizeof(struct ext2_dx_entry);
limits->count = 0;
return (struct ext2_dx_entry *) limits;
}
/*
* This function takes the leaf nodes which have been written in
* outdir, and populates the root node and any necessary interior nodes.
*/
static errcode_t calculate_tree(ext2_filsys fs,
struct out_dir *outdir,
ext2_ino_t ino,
ext2_ino_t parent)
{
struct ext2_dx_root_info *root_info;
struct ext2_dx_entry *root, *dx_ent = 0;
struct ext2_dx_countlimit *root_limit, *limit;
errcode_t retval;
char * block_start;
int i, c1, c2, nblks;
int limit_offset, root_offset;
root_info = set_root_node(fs, outdir->buf, ino, parent);
root_offset = limit_offset = ((char *) root_info - outdir->buf) +
root_info->info_length;
root_limit = (struct ext2_dx_countlimit *) (outdir->buf + limit_offset);
c1 = root_limit->limit;
nblks = outdir->num;
/* Write out the pointer blocks */
if (nblks-1 <= c1) {
/* Just write out the root block, and we're done */
root = (struct ext2_dx_entry *) (outdir->buf + root_offset);
for (i=1; i < nblks; i++) {
root->block = ext2fs_cpu_to_le32(i);
if (i != 1)
root->hash =
ext2fs_cpu_to_le32(outdir->hashes[i]);
root++;
c1--;
}
} else {
c2 = 0;
limit = 0;
root_info->indirect_levels = 1;
for (i=1; i < nblks; i++) {
if (c1 == 0)
return ENOSPC;
if (c2 == 0) {
if (limit)
limit->limit = limit->count =
ext2fs_cpu_to_le16(limit->limit);
root = (struct ext2_dx_entry *)
(outdir->buf + root_offset);
root->block = ext2fs_cpu_to_le32(outdir->num);
if (i != 1)
root->hash =
ext2fs_cpu_to_le32(outdir->hashes[i]);
if ((retval = get_next_block(fs, outdir,
&block_start)))
return retval;
dx_ent = set_int_node(fs, block_start);
limit = (struct ext2_dx_countlimit *) dx_ent;
c2 = limit->limit;
root_offset += sizeof(struct ext2_dx_entry);
c1--;
}
dx_ent->block = ext2fs_cpu_to_le32(i);
if (c2 != limit->limit)
dx_ent->hash =
ext2fs_cpu_to_le32(outdir->hashes[i]);
dx_ent++;
c2--;
}
limit->count = ext2fs_cpu_to_le16(limit->limit - c2);
limit->limit = ext2fs_cpu_to_le16(limit->limit);
}
root_limit = (struct ext2_dx_countlimit *) (outdir->buf + limit_offset);
root_limit->count = ext2fs_cpu_to_le16(root_limit->limit - c1);
root_limit->limit = ext2fs_cpu_to_le16(root_limit->limit);
return 0;
}
struct write_dir_struct {
struct out_dir *outdir;
errcode_t err;
e2fsck_t ctx;
int cleared;
};
/*
* Helper function which writes out a directory block.
*/
static int write_dir_block(ext2_filsys fs,
blk_t *block_nr,
e2_blkcnt_t blockcnt,
blk_t ref_block EXT2FS_ATTR((unused)),
int ref_offset EXT2FS_ATTR((unused)),
void *priv_data)
{
struct write_dir_struct *wd = (struct write_dir_struct *) priv_data;
blk_t blk;
char *dir;
if (*block_nr == 0)
return 0;
if (blockcnt >= wd->outdir->num) {
e2fsck_read_bitmaps(wd->ctx);
blk = *block_nr;
ext2fs_unmark_block_bitmap(wd->ctx->block_found_map, blk);
ext2fs_block_alloc_stats(fs, blk, -1);
*block_nr = 0;
wd->cleared++;
return BLOCK_CHANGED;
}
if (blockcnt < 0)
return 0;
dir = wd->outdir->buf + (blockcnt * fs->blocksize);
wd->err = ext2fs_write_dir_block(fs, *block_nr, dir);
if (wd->err)
return BLOCK_ABORT;
return 0;
}
static errcode_t write_directory(e2fsck_t ctx, ext2_filsys fs,
struct out_dir *outdir,
ext2_ino_t ino, int compress)
{
struct write_dir_struct wd;
errcode_t retval;
struct ext2_inode inode;
retval = e2fsck_expand_directory(ctx, ino, -1, outdir->num);
if (retval)
return retval;
wd.outdir = outdir;
wd.err = 0;
wd.ctx = ctx;
wd.cleared = 0;
retval = ext2fs_block_iterate2(fs, ino, 0, 0,
write_dir_block, &wd);
if (retval)
return retval;
if (wd.err)
return wd.err;
e2fsck_read_inode(ctx, ino, &inode, "rehash_dir");
if (compress)
inode.i_flags &= ~EXT2_INDEX_FL;
else
inode.i_flags |= EXT2_INDEX_FL;
inode.i_size = outdir->num * fs->blocksize;
inode.i_blocks -= (fs->blocksize / 512) * wd.cleared;
e2fsck_write_inode(ctx, ino, &inode, "rehash_dir");
return 0;
}
errcode_t e2fsck_rehash_dir(e2fsck_t ctx, ext2_ino_t ino)
{
ext2_filsys fs = ctx->fs;
errcode_t retval;
struct ext2_inode inode;
char *dir_buf = 0;
struct fill_dir_struct fd;
struct out_dir outdir;
outdir.max = outdir.num = 0;
outdir.buf = 0;
outdir.hashes = 0;
e2fsck_read_inode(ctx, ino, &inode, "rehash_dir");
retval = ENOMEM;
fd.harray = 0;
dir_buf = malloc(inode.i_size);
if (!dir_buf)
goto errout;
fd.max_array = inode.i_size / 32;
fd.num_array = 0;
fd.harray = malloc(fd.max_array * sizeof(struct hash_entry));
if (!fd.harray)
goto errout;
fd.ctx = ctx;
fd.buf = dir_buf;
fd.inode = &inode;
fd.err = 0;
fd.dir_size = 0;
fd.compress = 0;
if (!(fs->super->s_feature_compat & EXT2_FEATURE_COMPAT_DIR_INDEX) ||
(inode.i_size / fs->blocksize) < 2)
fd.compress = 1;
fd.parent = 0;
/* Read in the entire directory into memory */
retval = ext2fs_block_iterate2(fs, ino, 0, 0,
fill_dir_block, &fd);
if (fd.err) {
retval = fd.err;
goto errout;
}
#if 0
printf("%d entries (%d bytes) found in inode %d\n",
fd.num_array, fd.dir_size, ino);
#endif
/* Sort the list */
resort:
if (fd.compress)
qsort(fd.harray+2, fd.num_array-2,
sizeof(struct hash_entry), name_cmp);
else
qsort(fd.harray, fd.num_array,
sizeof(struct hash_entry), hash_cmp);
/*
* Look for duplicates
*/
if (duplicate_search_and_fix(ctx, fs, ino, &fd))
goto resort;
if (ctx->options & E2F_OPT_NO) {
retval = 0;
goto errout;
}
/*
* Copy the directory entries. In a htree directory these
* will become the leaf nodes.
*/
retval = copy_dir_entries(fs, &fd, &outdir);
if (retval)
goto errout;
free(dir_buf); dir_buf = 0;
if (!fd.compress) {
/* Calculate the interior nodes */
retval = calculate_tree(fs, &outdir, ino, fd.parent);
if (retval)
goto errout;
}
retval = write_directory(ctx, fs, &outdir, ino, fd.compress);
if (retval)
goto errout;
errout:
if (dir_buf)
free(dir_buf);
if (fd.harray)
free(fd.harray);
free_out_dir(&outdir);
return retval;
}
void e2fsck_rehash_directories(e2fsck_t ctx)
{
struct problem_context pctx;
#ifdef RESOURCE_TRACK
struct resource_track rtrack;
#endif
struct dir_info *dir;
ext2_u32_iterate iter;
ext2_ino_t ino;
errcode_t retval;
int i, cur, max, all_dirs, dir_index, first = 1;
#ifdef RESOURCE_TRACK
init_resource_track(&rtrack);
#endif
all_dirs = ctx->options & E2F_OPT_COMPRESS_DIRS;
if (!ctx->dirs_to_hash && !all_dirs)
return;
e2fsck_get_lost_and_found(ctx, 0);
clear_problem_context(&pctx);
dir_index = ctx->fs->super->s_feature_compat & EXT2_FEATURE_COMPAT_DIR_INDEX;
cur = 0;
if (all_dirs) {
i = 0;
max = e2fsck_get_num_dirinfo(ctx);
} else {
retval = ext2fs_u32_list_iterate_begin(ctx->dirs_to_hash,
&iter);
if (retval) {
pctx.errcode = retval;
fix_problem(ctx, PR_3A_OPTIMIZE_ITER, &pctx);
return;
}
max = ext2fs_u32_list_count(ctx->dirs_to_hash);
}
while (1) {
if (all_dirs) {
if ((dir = e2fsck_dir_info_iter(ctx, &i)) == 0)
break;
ino = dir->ino;
} else {
if (!ext2fs_u32_list_iterate(iter, &ino))
break;
}
if (ino == ctx->lost_and_found)
continue;
pctx.dir = ino;
if (first) {
fix_problem(ctx, PR_3A_PASS_HEADER, &pctx);
first = 0;
}
#if 0
fix_problem(ctx, PR_3A_OPTIMIZE_DIR, &pctx);
#endif
pctx.errcode = e2fsck_rehash_dir(ctx, ino);
if (pctx.errcode) {
end_problem_latch(ctx, PR_LATCH_OPTIMIZE_DIR);
fix_problem(ctx, PR_3A_OPTIMIZE_DIR_ERR, &pctx);
}
if (ctx->progress && !ctx->progress_fd)
e2fsck_simple_progress(ctx, "Rebuilding directory",
100.0 * (float) (++cur) / (float) max, ino);
}
end_problem_latch(ctx, PR_LATCH_OPTIMIZE_DIR);
if (!all_dirs)
ext2fs_u32_list_iterate_end(iter);
if (ctx->dirs_to_hash)
ext2fs_u32_list_free(ctx->dirs_to_hash);
ctx->dirs_to_hash = 0;
#ifdef RESOURCE_TRACK
if (ctx->options & E2F_OPT_TIME2) {
e2fsck_clear_progbar(ctx);
print_resource_track("Pass 3A", &rtrack);
}
#endif
}
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