[PATCH] selinux: add hooks for key subsystem
Introduce SELinux hooks to support the access key retention subsystem
within the kernel. Incorporate new flask headers from a modified version
of the SELinux reference policy, with support for the new security class
representing retained keys. Extend the "key_alloc" security hook with a
task parameter representing the intended ownership context for the key
being allocated. Attach security information to root's default keyrings
within the SELinux initialization routine.
Has passed David's testsuite.
Signed-off-by: Michael LeMay <mdlemay@epoch.ncsc.mil>
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: James Morris <jmorris@namei.org>
Acked-by: Chris Wright <chrisw@sous-sol.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/include/linux/security.h b/include/linux/security.h
index 4dfb1b8..47722d3 100644
--- a/include/linux/security.h
+++ b/include/linux/security.h
@@ -1313,7 +1313,7 @@
/* key management security hooks */
#ifdef CONFIG_KEYS
- int (*key_alloc)(struct key *key);
+ int (*key_alloc)(struct key *key, struct task_struct *tsk);
void (*key_free)(struct key *key);
int (*key_permission)(key_ref_t key_ref,
struct task_struct *context,
@@ -3008,9 +3008,10 @@
#ifdef CONFIG_KEYS
#ifdef CONFIG_SECURITY
-static inline int security_key_alloc(struct key *key)
+static inline int security_key_alloc(struct key *key,
+ struct task_struct *tsk)
{
- return security_ops->key_alloc(key);
+ return security_ops->key_alloc(key, tsk);
}
static inline void security_key_free(struct key *key)
@@ -3027,7 +3028,8 @@
#else
-static inline int security_key_alloc(struct key *key)
+static inline int security_key_alloc(struct key *key,
+ struct task_struct *tsk)
{
return 0;
}