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ext4: avoid remove directory when directory is corrupted 

Now if check directoy entry is corrupted, ext4_empty_dir may return true
then directory will be removed when file system mounted with "errors=continue".
In order not to make things worse just return false when directory is corrupted.

Signed-off-by: Ye Bin <yebin10@huawei.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Link: https://lore.kernel.org/r/20220622090223.682234-1-yebin10@huawei.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
This commit is contained in:
Ye Bin 2022-06-22 17:02:23 +08:00 committed by Theodore Ts'o
parent c64a92992e
commit b24e77ef1c
1 changed files with 2 additions and 5 deletions
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7
fs/ext4/namei.c
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@ -3067,11 +3067,8 @@ bool ext4_empty_dir(struct inode *inode)
de = (struct ext4_dir_entry_2 *) (bh->b_data +
(offset & (sb->s_blocksize - 1)));
if (ext4_check_dir_entry(inode, NULL, de, bh,
bh->b_data, bh->b_size, offset)) {
offset = (offset | (sb->s_blocksize - 1)) + 1;
continue;
}
if (le32_to_cpu(de->inode)) {
bh->b_data, bh->b_size, offset) ||
le32_to_cpu(de->inode)) {
brelse(bh);
return false;
}