CRED: Separate task security context from task_struct
Separate the task security context from task_struct. At this point, the
security data is temporarily embedded in the task_struct with two pointers
pointing to it.
Note that the Alpha arch is altered as it refers to (E)UID and (E)GID in
entry.S via asm-offsets.
With comment fixes Signed-off-by: Marc Dionne <marc.c.dionne@gmail.com>
Signed-off-by: David Howells <dhowells@redhat.com>
Acked-by: James Morris <jmorris@namei.org>
Acked-by: Serge Hallyn <serue@us.ibm.com>
Signed-off-by: James Morris <jmorris@namei.org>
diff --git a/kernel/sched.c b/kernel/sched.c
index c3b8b1f..733c59e 100644
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -345,7 +345,7 @@
struct task_group *tg;
#ifdef CONFIG_USER_SCHED
- tg = p->user->tg;
+ tg = p->cred->user->tg;
#elif defined(CONFIG_CGROUP_SCHED)
tg = container_of(task_subsys_state(p, cpu_cgroup_subsys_id),
struct task_group, css);
@@ -5182,8 +5182,8 @@
/* can't change other user's priorities */
euid = current_euid();
- if (euid != p->euid &&
- euid != p->uid)
+ if (euid != p->cred->euid &&
+ euid != p->cred->uid)
return -EPERM;
}
@@ -5417,7 +5417,9 @@
euid = current_euid();
retval = -EPERM;
- if (euid != p->euid && euid != p->uid && !capable(CAP_SYS_NICE))
+ if (euid != p->cred->euid &&
+ euid != p->cred->uid &&
+ !capable(CAP_SYS_NICE))
goto out_unlock;
retval = security_task_setscheduler(p, 0, NULL);