[PATCH] SELinux: add security hooks to {get,set}affinity
This patch adds LSM hooks into the setaffinity and getaffinity functions to
enable security modules to control these operations between tasks with
task_setscheduler and task_getscheduler LSM hooks.
Signed-off-by: David Quigley <dpquigl@tycho.nsa.gov>
Acked-by: Stephen Smalley <sds@tycho.nsa.gov>
Signed-off-by: James Morris <jmorris@namei.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/kernel/sched.c b/kernel/sched.c
index c13f1bd..8766513 100644
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -3886,6 +3886,10 @@
!capable(CAP_SYS_NICE))
goto out_unlock;
+ retval = security_task_setscheduler(p, 0, NULL);
+ if (retval)
+ goto out_unlock;
+
cpus_allowed = cpuset_cpus_allowed(p);
cpus_and(new_mask, new_mask, cpus_allowed);
retval = set_cpus_allowed(p, new_mask);
@@ -3954,7 +3958,10 @@
if (!p)
goto out_unlock;
- retval = 0;
+ retval = security_task_getscheduler(p);
+ if (retval)
+ goto out_unlock;
+
cpus_and(*mask, p->cpus_allowed, cpu_online_map);
out_unlock:
