init: loading debug resources before chroot into first_stage_ramdisk am: 64e92f946f am: 20a73996fa (ba04147a) · Commits · e / os / android_system_core

init/first_stage_init.cpp

+13 −22

Original line number	Diff line number	Diff line
		@@ -327,6 +327,19 @@ int FirstStageMain(int argc, char** argv) {
		LOG(INFO) << "Copied ramdisk prop to " << dest;
		}

		// If "/force_debuggable" is present, the second-stage init will use a userdebug
		// sepolicy and load adb_debug.prop to allow adb root, if the device is unlocked.
		if (access("/force_debuggable", F_OK) == 0) {
		std::error_code ec; // to invoke the overloaded copy_file() that won't throw.
		if (!fs::copy_file("/adb_debug.prop", kDebugRamdiskProp, ec) \|\|
		!fs::copy_file("/userdebug_plat_sepolicy.cil", kDebugRamdiskSEPolicy, ec)) {
		LOG(ERROR) << "Failed to setup debug ramdisk";
		} else {
		// setenv for second-stage init to read above kDebugRamdisk* files.
		setenv("INIT_FORCE_DEBUGGABLE", "true", 1);
		}
		}

		if (ForceNormalBoot(cmdline, bootconfig)) {
		mkdir("/first_stage_ramdisk", 0755);
		// SwitchRoot() must be called with a mount point as the target, so we bind mount the
		@@ -337,28 +350,6 @@ int FirstStageMain(int argc, char** argv) {
		SwitchRoot("/first_stage_ramdisk");
		}

		std::string force_debuggable("/force_debuggable");
		std::string adb_debug_prop("/adb_debug.prop");
		std::string userdebug_sepolicy("/userdebug_plat_sepolicy.cil");
		if (IsRecoveryMode()) {
		// Update these file paths since we didn't switch root
		force_debuggable.insert(0, "/first_stage_ramdisk");
		adb_debug_prop.insert(0, "/first_stage_ramdisk");
		userdebug_sepolicy.insert(0, "/first_stage_ramdisk");
		}
		// If this file is present, the second-stage init will use a userdebug sepolicy
		// and load adb_debug.prop to allow adb root, if the device is unlocked.
		if (access(force_debuggable.c_str(), F_OK) == 0) {
		std::error_code ec; // to invoke the overloaded copy_file() that won't throw.
		if (!fs::copy_file(adb_debug_prop, kDebugRamdiskProp, ec) \|\|
		!fs::copy_file(userdebug_sepolicy, kDebugRamdiskSEPolicy, ec)) {
		LOG(ERROR) << "Failed to setup debug ramdisk";
		} else {
		// setenv for second-stage init to read above kDebugRamdisk* files.
		setenv("INIT_FORCE_DEBUGGABLE", "true", 1);
		}
		}

		if (!DoFirstStageMount(!created_devices)) {
		LOG(FATAL) << "Failed to mount required partitions early ...";
		}