security: Add hooks to rule on setting a watch
Add security hooks that will allow an LSM to rule on whether or not a watch
may be set. More than one hook is required as the watches watch different
types of object.
Signed-off-by: David Howells <dhowells@redhat.com>
Acked-by: James Morris <jamorris@linux.microsoft.com>
cc: Casey Schaufler <casey@schaufler-ca.com>
cc: Stephen Smalley <sds@tycho.nsa.gov>
cc: linux-security-module@vger.kernel.org
diff --git a/security/security.c b/security/security.c
index 7d55607..c73334a 100644
--- a/security/security.c
+++ b/security/security.c
@@ -2016,6 +2016,13 @@ int security_post_notification(const struct cred *w_cred,
}
#endif /* CONFIG_WATCH_QUEUE */
+#ifdef CONFIG_KEY_NOTIFICATIONS
+int security_watch_key(struct key *key)
+{
+ return call_int_hook(watch_key, 0, key);
+}
+#endif
+
#ifdef CONFIG_SECURITY_NETWORK
int security_unix_stream_connect(struct sock *sock, struct sock *other, struct sock *newsk)