Add dynamic signature support

kernel/ksu.h

@@ -29,6 +29,7 @@
 #define CMD_ENABLE_KPM 100
 #define CMD_HOOK_TYPE 101
 #define CMD_GET_SUSFS_FEATURE_STATUS 102
+#define CMD_DYNAMIC_SIGN 103
 
 #define EVENT_POST_FS_DATA 1
 #define EVENT_BOOT_COMPLETED 2
@@ -46,6 +47,16 @@
 #endif
 #define KSU_FULL_VERSION_STRING 255
 
+#define DYNAMIC_SIGN_OP_SET 0
+#define DYNAMIC_SIGN_OP_GET 1
+#define DYNAMIC_SIGN_OP_CLEAR 2
+
+struct dynamic_sign_user_config {
+    unsigned int operation;
+    unsigned int size;
+    char hash[65];
+};
+
 // SUSFS Functional State Structures
 struct susfs_feature_status {
 	bool status_sus_path;
@@ -158,4 +169,4 @@ static inline int endswith(const char *s, const char *t)
 	return strcmp(s + slen - tlen, t);
 }
 
-#endif
+#endif