/*
* This function is called to deallocate a block, and is an interator
* functioned called by deallocate inode via ext2fs_iterate_block().
*/
static int deallocate_inode_block(ext2_filsys fs,
blk_t *block_nr,
e2_blkcnt_t blockcnt,
blk_t ref_block,
int ref_offset,
void *priv_data)
{
e2fsck_t ctx = (e2fsck_t) priv_data;
if (HOLE_BLKADDR(*block_nr))
return 0;
ext2fs_unmark_block_bitmap(ctx->block_found_map, *block_nr);
ext2fs_unmark_block_bitmap(fs->block_map, *block_nr);
return 0;
}
static int deallocate_inode_block(ext2_filsys fs,
blk_t *block_nr,
e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
blk_t ref_block EXT2FS_ATTR((unused)),
int ref_offset EXT2FS_ATTR((unused)),
void *priv_data)
{
e2fsck_t ctx = (e2fsck_t) priv_data;
if (HOLE_BLKADDR(*block_nr))
return 0;
if ((*block_nr < fs->super->s_first_data_block) ||
(*block_nr >= fs->super->s_blocks_count))
return 0;
ext2fs_unmark_block_bitmap(ctx->block_found_map, *block_nr);
ext2fs_block_alloc_stats(fs, *block_nr, -1);
return 0;
}
/*
* This function is called to deallocate a block, and is an interator
* functioned called by deallocate inode via ext2fs_iterate_block().
*/
static int deallocate_inode_block(ext2_filsys fs,
blk64_t *block_nr,
e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
blk64_t ref_block EXT2FS_ATTR((unused)),
int ref_offset EXT2FS_ATTR((unused)),
void *priv_data)
{
struct del_block *p = priv_data;
if (HOLE_BLKADDR(*block_nr))
return 0;
if ((*block_nr < fs->super->s_first_data_block) ||
(*block_nr >= ext2fs_blocks_count(fs->super)))
return 0;
ext2fs_unmark_block_bitmap2(p->ctx->block_found_map, *block_nr);
ext2fs_block_alloc_stats2(fs, *block_nr, -1);
p->num++;
return 0;
}
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, rec_len;
int hash_alg;
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;
(void) ext2fs_set_rec_len(fs, fs->blocksize, dirent);
} else {
fd->err = ext2fs_read_dir_block(fs, *block_nr, dir);
if (fd->err)
return BLOCK_ABORT;
}
hash_alg = fs->super->s_def_hash_version;
if ((hash_alg <= EXT2_HASH_TEA) &&
(fs->super->s_flags & EXT2_FLAGS_UNSIGNED_HASH))
hash_alg += 3;
/* While the directory block is "hot", index it. */
dir_offset = 0;
while (dir_offset < fs->blocksize) {
dirent = (struct ext2_dir_entry *) (dir + dir_offset);
(void) ext2fs_get_rec_len(fs, dirent, &rec_len);
if (((dir_offset + rec_len) > fs->blocksize) ||
(rec_len < 8) ||
((rec_len % 4) != 0) ||
(((dirent->name_len & 0xFF)+8) > rec_len)) {
fd->err = EXT2_ET_DIR_CORRUPTED;
return BLOCK_ABORT;
}
dir_offset += 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);
ent->ino = dirent->inode;
if (fd->compress)
ent->hash = ent->minor_hash = 0;
else {
fd->err = ext2fs_dirhash(hash_alg, dirent->name,
dirent->name_len & 0xFF,
fs->super->s_hash_seed,
&ent->hash, &ent->minor_hash);
if (fd->err)
return BLOCK_ABORT;
}
}
return 0;
}