Check the value of r_count to ensure that we never try to read revoke
records past the end of the revoke block. It turns out that the
journal writing code in debugfs was also playing fast and loose with
the r_count, so fix that as well.
The Coverity bug was 1297508.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Document the new journal and xattr commands in the debugfs manpage.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Set the needs_recover incompat feature when debugfs writes journal
transactions so that we actually replay the journal contents at the
next mount.
Likewise, clear it if we successfully recover the journal.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Extend debugfs with the ability to create transactions and replay the
journal. This will eventually be used to test kernel recovery and
metadata_csum recovery.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Darrick J. Wong