]> git.karo-electronics.de Git - karo-tx-linux.git/commit
ext4: Make sure the MOVE_EXT ioctl can't overwrite append-only files
authorTheodore Ts'o <tytso@mit.edu>
Thu, 3 Jun 2010 02:04:39 +0000 (22:04 -0400)
committerGreg Kroah-Hartman <gregkh@suse.de>
Mon, 5 Jul 2010 18:16:08 +0000 (11:16 -0700)
commit69d44cfd3e4d45b92a6ddea7227df030c120f871
treead0adfedc700459d8304e17e4dad5825e6e69774
parentd1491fb32619f09e2e2515588ea864aadcdda41a
ext4: Make sure the MOVE_EXT ioctl can't overwrite append-only files

commit 1f5a81e41f8b1a782c68d3843e9ec1bfaadf7d72 upstream.

Dan Roseberg has reported a problem with the MOVE_EXT ioctl.  If the
donor file is an append-only file, we should not allow the operation
to proceed, lest we end up overwriting the contents of an append-only
file.

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Cc: Dan Rosenberg <dan.j.rosenberg@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
fs/ext4/move_extent.c