aboutsummaryrefslogtreecommitdiff
path: root/e2fsprogs/e2fsck/rehash.c
diff options
context:
space:
mode:
Diffstat (limited to 'e2fsprogs/e2fsck/rehash.c')
-rw-r--r--e2fsprogs/e2fsck/rehash.c840
1 files changed, 0 insertions, 840 deletions
diff --git a/e2fsprogs/e2fsck/rehash.c b/e2fsprogs/e2fsck/rehash.c
deleted file mode 100644
index 727e08c2b..000000000
--- a/e2fsprogs/e2fsck/rehash.c
+++ /dev/null
@@ -1,840 +0,0 @@
-/*
- * 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
-}