linux-ext4 - Re: [PATCH v4] ext4: wipe ext4_dir

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Message-ID: <YIHknqxngB1sUdie@mit.edu>
Date:   Thu, 22 Apr 2021 17:03:26 -0400
From:   "Theodore Ts'o" <tytso@....edu>
To:     Leah Rumancik <leah.rumancik@...il.com>
Cc:     linux-ext4@...r.kernel.org
Subject: Re: [PATCH v4] ext4: wipe ext4_dir_entry2 upon file deletion

On Thu, Apr 22, 2021 at 06:08:34PM +0000, Leah Rumancik wrote:
> Upon file deletion, zero out all fields in ext4_dir_entry2 besides rec_len.
> In case sensitive data is stored in filenames, this ensures no potentially
> sensitive data is left in the directory entry upon deletion. Also, wipe
> these fields upon moving a directory entry during the conversion to an
> htree and when splitting htree nodes.
> 
> The data wiped may still exist in the journal, but there are future
> commits planned to address this.
> 
> Signed-off-by: Leah Rumancik <leah.rumancik@...il.com>

Applied, thanks.

					- Ted