Re: [PATCH 31/32] ext4: strong binding of xattr inode references

From: Theodore Ts'o
Date: Thu Jun 22 2017 - 11:54:34 EST


On Wed, Jun 21, 2017 at 06:49:38PM -0700, Tahsin Erdogan wrote:
> To verify that a xattr entry is not pointing to the wrong xattr inode,
> we currently check that the target inode has EXT4_EA_INODE_FL flag set and
> also the entry size matches the target inode size.
>
> For stronger validation, also incorporate crc32c hash of the value into
> the e_hash field. This is done regardless of whether the entry lives in
> the inode body or external attribute block.
>
> Signed-off-by: Tahsin Erdogan <tahsin@xxxxxxxxxx>

Added to the ext4 patch queue, thanks.

- Ted