tree 063ec0bc590950b7ca0e2c5d5ed8a1c259ce1675
parent dbe89444042ab6540bc304343cfdcbc8b95d003d
author Darrick J. Wong <djwong@us.ibm.com> 1335739270 -0400
committer Theodore Ts'o <tytso@mit.edu> 1335739270 -0400

ext4: calculate and verify checksums of directory leaf blocks

Calculate and verify the checksums for directory leaf blocks
(i.e. blocks that only contain actual directory entries).  The
checksum lives in what looks to be an unused directory entry with a 0
name_len at the end of the block.  This scheme is not used for
internal htree nodes because the mechanism in place there only costs
one dx_entry, whereas the "empty" directory entry would cost two
dx_entries.

Signed-off-by: Darrick J. Wong <djwong@us.ibm.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>