On 2011-10-07, at 1:10 AM, Allison Henderson <achender@xxxxxxxxxxxxxxxxxx> wrote: > 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. Since inode flags are in short supply, and I suspect users that want this want it for all files, this should probably be a superblock flag? > 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(-) > > -- > To unsubscribe from this list: send the line "unsubscribe linux-ext4" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
