[PATCH RFC 4/15] Audit: Add record for multiple object contexts

[Paul Moore]

On Jun 21, 2025 Casey Schaufler <casey at schaufler-ca.com> wrote:
> 
> Create a new audit record AUDIT_MAC_OBJ_CONTEXTS.
> An example of the MAC_OBJ_CONTEXTS record is:
> 
>     type=MAC_OBJ_CONTEXTS
>     msg=audit(1601152467.009:1050):
>     obj_selinux=unconfined_u:object_r:user_home_t:s0
> 
> When an audit event includes a AUDIT_MAC_OBJ_CONTEXTS record
> the "obj=" field in other records in the event will be "obj=?".
> An AUDIT_MAC_OBJ_CONTEXTS record is supplied when the system has
> multiple security modules that may make access decisions based
> on an object security context.
> 
> Signed-off-by: Casey Schaufler <casey at schaufler-ca.com>
> ---
>  include/linux/audit.h      |  7 +++++
>  include/uapi/linux/audit.h |  1 +
>  kernel/audit.c             | 58 +++++++++++++++++++++++++++++++++++++-
>  kernel/auditsc.c           | 45 ++++++++---------------------
>  security/selinux/hooks.c   |  3 +-
>  security/smack/smack_lsm.c |  3 +-
>  6 files changed, 80 insertions(+), 37 deletions(-)

Similar to patch 1/15, dropped due to this already being in Linus'
tree.

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