From: Allison Henderson <achender@linux.vnet.ibm.com>
To: linux-ext4@vger.kernel.org, linux-fsdevel@vger.kernel.org
Cc: Allison Henderson <achender@linux.vnet.ibm.com>
Subject: [Ext4 Secure Delete 0/7 v4] Ext4 secure delete
Date: Fri, 7 Oct 2011 00:10:58 -0700 [thread overview]
Message-ID: <1317971465-8517-1-git-send-email-achender@linux.vnet.ibm.com> (raw)
Hi all,
Sorry for the delay in getting this next version out.
I had some tasks to take care of, and now I'm picking up my
secure delete work again. I'm still not quite done yet,
but a lot has changed and I wanted to update people so that
we have an idea of where its going. Currently the patch
deals with data blocks, meta blocks, directory entries,
journal blocks, and also provides an option for secure
deleting with random data instead of just zeros.
I'm also planning on adding some more patches to
deal with inodes and also a mount option that turns
on secure delete by default. Im still not quite done
debugging, but Im just sending it out early to get
some more eyes on it. Feed back appreciated! :)
v3->v4
Added a new file attribute flag EXT4_SECRM_RANDOM_FL
This flag causes the secure delete operations to over write
blocks with random data instead of zeros.
New function ext4_secure_delete_lblks added to walk
data blocks and secure delete them before any blocks
are removed.
Meta blocks are secure deleted before they are
released
New function added to identify holes in ind files.
Used by ext4_secure_delete_lblks to skip over holes
during secure delete.
Added another list in the journal structure to track
journal blocks so that they can be secure deleted later.
Added new ext4_secure_delete_jblks that secure deletes
journal blocks that were used to journal the specified
logical blocks
Allison Henderson (7):
ext4: Secure Delete: Add new EXT4_SECRM_RANDOM_FL flag
ext4: Secure Delete: Add ext4_ind_hole_lookup function
ext4: Secure Delete: Add secure delete functions
ext4: Secure Delete: Secure delete file data
ext4: Secure Delete: Secure delete directory entry
ext4: Secure Delete: Secure delete meta data blocks
ext4/jbd2: Secure Delete: Secure delete journal blocks
fs/ext4/ext4.h | 28 +++-
fs/ext4/ext4_extents.h | 2 +
fs/ext4/extents.c | 21 +++-
fs/ext4/indirect.c | 2 +-
fs/ext4/inode.c | 391 ++++++++++++++++++++++++++++++++++++++++++++++++
fs/ext4/mballoc.c | 8 +
fs/ext4/namei.c | 64 +++++++-
fs/jbd2/commit.c | 6 +
fs/jbd2/journal.c | 112 ++++++++++++++
include/linux/jbd2.h | 21 +++
10 files changed, 642 insertions(+), 13 deletions(-)
next reply other threads:[~2011-10-07 7:10 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-10-07 7:10 Allison Henderson [this message]
2011-10-07 7:10 ` [Ext4 Secure Delete 1/7v4] ext4: Secure Delete: Add new EXT4_SECRM_RANDOM_FL flag Allison Henderson
2011-10-07 17:02 ` Darrick J. Wong
2011-10-07 17:14 ` Allison Henderson
2011-10-07 7:11 ` [Ext4 Secure Delete 2/7v4] ext4: Secure Delete: Add ext4_ind_hole_lookup function Allison Henderson
2011-10-07 17:47 ` Darrick J. Wong
2011-10-07 23:10 ` Allison Henderson
2011-10-07 7:11 ` [Ext4 Secure Delete 3/7v4] ext4: Secure Delete: Add secure delete functions Allison Henderson
2011-10-07 17:19 ` Allison Henderson
2011-10-07 18:07 ` Darrick J. Wong
2011-10-07 23:08 ` Allison Henderson
2011-10-07 7:11 ` [Ext4 Secure Delete 4/7v4] ext4: Secure Delete: Secure delete file data Allison Henderson
2011-10-07 7:11 ` [Ext4 Secure Delete 5/7v4] ext4: Secure Delete: Secure delete directory entry Allison Henderson
2011-10-07 17:22 ` Darrick J. Wong
2011-10-07 17:59 ` Allison Henderson
2011-10-07 7:11 ` [Ext4 Secure Delete 6/7v4] ext4: Secure Delete: Secure delete meta data blocks Allison Henderson
2011-10-07 7:11 ` [Ext4 Secure Delete 7/7v4] ext4/jbd2: Secure Delete: Secure delete journal blocks Allison Henderson
2011-10-07 18:35 ` Darrick J. Wong
2011-10-07 19:31 ` Sunil Mushran
2011-10-07 19:54 ` Eric Sandeen
2011-10-07 20:14 ` Allison Henderson
2011-10-07 19:55 ` Allison Henderson
2011-10-07 20:58 ` Darrick J. Wong
2011-10-08 0:06 ` Allison Henderson
2011-10-10 19:47 ` Jonathan Corbet
2011-10-10 23:35 ` Allison Henderson
2011-10-10 23:41 ` Jonathan Corbet
2011-10-11 0:54 ` Allison Henderson
2011-10-10 20:00 ` Jonathan Corbet
2011-10-10 23:36 ` Allison Henderson
2011-10-07 15:21 ` [Ext4 Secure Delete 0/7 v4] Ext4 secure delete Andreas Dilger
2011-10-07 17:07 ` Allison Henderson
2011-10-10 17:20 ` Allison Henderson
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1317971465-8517-1-git-send-email-achender@linux.vnet.ibm.com \
--to=achender@linux.vnet.ibm.com \
--cc=linux-ext4@vger.kernel.org \
--cc=linux-fsdevel@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).