kernel: Add KSU_MANUAL_HOOK configuration for manual KernelSU syscall hooking

kernel/Kconfig

@@ -46,6 +46,12 @@ config KSU_TRACEPOINT_HOOK
 	help
 	  If enabled, Hook required KernelSU syscalls with Tracepoint.
 
+config KSU_MANUAL_HOOK
+    bool "Hook KernelSU manually"
+	depends on KSU != m
+	help
+	  If enabled, Hook required KernelSU syscalls with manually-patched function.
+
 endchoice
 
 endmenu

kernel/Makefile

@@ -98,6 +98,8 @@ ifeq ($(strip $(CONFIG_KSU_KPROBES_HOOK)),y)
 $(info -- SukiSU: CONFIG_KSU_KPROBES_HOOK)
 else ifeq ($(strip $(CONFIG_KSU_TRACEPOINT_HOOK)),y)
 $(info -- SukiSU: CONFIG_KSU_TRACEPOINT_HOOK)
+else ifeq ($(strip $(CONFIG_KSU_MANUAL_HOOK)),y)
+$(info -- SukiSU: CONFIG_KSU_MANUAL_HOOK)
 endif
 
 KERNEL_VERSION := $(VERSION).$(PATCHLEVEL)

kernel/core_hook.c

@@ -544,12 +544,11 @@ int ksu_handle_prctl(int option, unsigned long arg2, unsigned long arg3,
 
 	// Checking hook usage
 	if (arg2 == CMD_HOOK_TYPE) {
-		const char *hook_type;
-				
-#ifdef CONFIG_KSU_TRACEPOINT_HOOK
+		const char *hook_type = "Kprobes";
+#if defined(CONFIG_KSU_TRACEPOINT_HOOK)
     	hook_type = "Tracepoint";
-#else
-		hook_type = "Kprobes";
+#elif defined(CONFIG_KSU_MANUAL_HOOK)
+    	hook_type = "Manual";
 #endif
 		
 		size_t len = strlen(hook_type) + 1;