[PATCH] SELinux: Add security hook definition for getioprio and insert hooks
Add a new security hook definition for the sys_ioprio_get operation. At
present, the SELinux hook function implementation for this hook is
identical to the getscheduler implementation but a separate hook is
introduced to allow this check to be specialized in the future if
necessary.
This patch also creates a helper function get_task_ioprio which handles the
access check in addition to retrieving the ioprio value for the task.
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>
Cc: Jens Axboe <axboe@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/security/dummy.c b/security/dummy.c
index de53f6e..d417936 100644
--- a/security/dummy.c
+++ b/security/dummy.c
@@ -524,6 +524,11 @@
return 0;
}
+static int dummy_task_getioprio (struct task_struct *p)
+{
+ return 0;
+}
+
static int dummy_task_setrlimit (unsigned int resource, struct rlimit *new_rlim)
{
return 0;
@@ -988,6 +993,7 @@
set_to_dummy_if_null(ops, task_setgroups);
set_to_dummy_if_null(ops, task_setnice);
set_to_dummy_if_null(ops, task_setioprio);
+ set_to_dummy_if_null(ops, task_getioprio);
set_to_dummy_if_null(ops, task_setrlimit);
set_to_dummy_if_null(ops, task_setscheduler);
set_to_dummy_if_null(ops, task_getscheduler);