manager: Add the ability to get a list of active managers

kernel/ksu.h

@@ -28,6 +28,7 @@
 
 #define CMD_ENABLE_KPM 100
 #define CMD_DYNAMIC_SIGN 103
+#define CMD_GET_MANAGERS 104
 
 #define EVENT_POST_FS_DATA 1
 #define EVENT_BOOT_COMPLETED 2
@@ -55,6 +56,14 @@ struct dynamic_sign_user_config {
     char hash[65];
 };
 
+struct manager_list_info {
+    int count;
+    struct {
+        uid_t uid;
+        int signature_index;
+    } managers[2];
+};
+
 struct root_profile {
 	int32_t uid;
 	int32_t gid;