landlock: Add a place for flags to layer rules

To avoid unnecessarily increasing the size of struct landlock_layer, we
make the layer level a u8 and use the space to store the flags struct.

struct layer_access_masks is renamed to struct layer_masks, and a new
field is added to track whether a quiet flag rule is seen for each
layer.  Through use of bitfields, this does not increase the size of the
struct.

Cc: Justin Suess <utilityemal77@gmail.com>
Assisted-by: GitHub-Copilot:claude-opus-4.8 copilot-review
Signed-off-by: Tingmao Wang <m@maowtm.org>
Co-developed-by: Justin Suess <utilityemal77@gmail.com>
Signed-off-by: Justin Suess <utilityemal77@gmail.com>
Tested-by: Justin Suess <utilityemal77@gmail.com>
Link: https://patch.msgid.link/be3fec3927bc9faaacd4ce0e7f0d1ff5474e2210.1781228815.git.m@maowtm.org
[mic: Fix comment formatting]
Signed-off-by: Mickaël Salaün <mic@digikod.net>

0 files changed, 0 insertions, 0 deletions