struct ext4_dir_entry *dirent;
int is_dx_block = 0;
- bh = ext4_bread(NULL, inode, block, 0);
+ if (ext4_simulate_fail(inode->i_sb, EXT4_SIM_DIRBLOCK_EIO))
+ bh = ERR_PTR(-EIO);
+ else
+ bh = ext4_bread(NULL, inode, block, 0);
if (IS_ERR(bh)) {
__ext4_warning(inode->i_sb, func, line,
"inode #%lu: lblock %lu: comm %s: "
* caller is sure it should be an index block.
*/
if (is_dx_block && type == INDEX) {
- if (ext4_dx_csum_verify(inode, dirent))
+ if (ext4_dx_csum_verify(inode, dirent) &&
+ !ext4_simulate_fail(inode->i_sb, EXT4_SIM_DIRBLOCK_CRC))
set_buffer_verified(bh);
else {
+ ext4_set_errno(inode->i_sb, EFSBADCRC);
ext4_error_inode(inode, func, line, block,
"Directory index failed checksum");
brelse(bh);
}
}
if (!is_dx_block) {
- if (ext4_dirblock_csum_verify(inode, bh))
+ if (ext4_dirblock_csum_verify(inode, bh) &&
+ !ext4_simulate_fail(inode->i_sb, EXT4_SIM_DIRBLOCK_CRC))
set_buffer_verified(bh);
else {
+ ext4_set_errno(inode->i_sb, EFSBADCRC);
ext4_error_inode(inode, func, line, block,
"Directory block failed checksum");
brelse(bh);
top = (struct ext4_dir_entry_2 *) ((char *) de +
dir->i_sb->s_blocksize -
EXT4_DIR_REC_LEN(0));
-#ifdef CONFIG_FS_ENCRYPTION
/* Check if the directory is encrypted */
if (IS_ENCRYPTED(dir)) {
err = fscrypt_get_encryption_info(dir);
return err;
}
}
-#endif
+
for (; de < top; de = ext4_next_entry(de, dir->i_sb->s_blocksize)) {
if (ext4_check_dir_entry(dir, NULL, de, bh,
bh->b_data, bh->b_size,
}
errout:
brelse(bh);
-#ifdef CONFIG_FS_ENCRYPTION
fscrypt_fname_free_buffer(&fname_crypto_str);
-#endif
return count;
}
goto next;
wait_on_buffer(bh);
if (!buffer_uptodate(bh)) {
+ ext4_set_errno(sb, EIO);
EXT4_ERROR_INODE(dir, "reading directory lblock %lu",
(unsigned long) block);
brelse(bh);
!is_dx_internal_node(dir, block,
(struct ext4_dir_entry *)bh->b_data) &&
!ext4_dirblock_csum_verify(dir, bh)) {
+ ext4_set_errno(sb, EFSBADCRC);
EXT4_ERROR_INODE(dir, "checksumming directory "
"block %lu", (unsigned long)block);
brelse(bh);
retval = ext4_dx_add_entry(handle, &fname, dir, inode);
if (!retval || (retval != ERR_BAD_DX_DIR))
goto out;
+ /* Can we just ignore htree data? */
+ if (ext4_has_metadata_csum(sb)) {
+ EXT4_ERROR_INODE(dir,
+ "Directory has corrupted htree index.");
+ retval = -EFSCORRUPTED;
+ goto out;
+ }
ext4_clear_inode_flag(dir, EXT4_INODE_INDEX);
dx_fallback++;
ext4_mark_inode_dirty(handle, dir);