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[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>
This commit is contained in:
David Quigley 2006-06-23 02:03:59 -07:00 committed by Linus Torvalds
parent 03e6806063
commit e7834f8fcc
1 changed files with 8 additions and 1 deletions
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9
kernel/sched.c
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@ -3886,6 +3886,10 @@ long sched_setaffinity(pid_t pid, cpumask_t new_mask)
!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 @@ long sched_getaffinity(pid_t pid, cpumask_t *mask)
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: