Re: [RFC][PATCH 3/4] lsm: Redefine LSM_HOOK() macro to add return value flags as argument
From: Paul Moore <paul@paul-moore.com>
Date: 2022-11-16 02:27:19
Also in:
bpf, lkml, stable
On Tue, Nov 15, 2022 at 12:58 PM Roberto Sassu [off-list ref] wrote:
From: Roberto Sassu <roberto.sassu@huawei.com>
Define four return value flags (LSM_RET_NEG, LSM_RET_ZERO, LSM_RET_ONE,
LSM_RET_GT_ONE), one for each interval of interest (< 0, = 0, = 1, > 1).
Redefine the LSM_HOOK() macro to add return value flags as argument, and
set the correct flags for each LSM hook.
Implementors of new LSM hooks should do the same as well.
Cc: stable@vger.kernel.org # 5.7.x
Fixes: 9d3fdea789c8 ("bpf: lsm: Provide attachment points for BPF LSM programs")
Signed-off-by: Roberto Sassu <roberto.sassu@huawei.com>
---
include/linux/bpf_lsm.h | 2 +-
include/linux/lsm_hook_defs.h | 779 ++++++++++++++++++++--------------
include/linux/lsm_hooks.h | 9 +-
kernel/bpf/bpf_lsm.c | 5 +-
security/bpf/hooks.c | 2 +-
security/security.c | 4 +-
6 files changed, 466 insertions(+), 335 deletions(-)Just a quick note here that even if we wanted to do something like this, it is absolutely not -stable kernel material. No way. -- paul-moore.com