1. 修改 ADB ROOT权限:

system/core$ git diff adb/adb.c

diff --git a/adb/adb.c b/adb/adb.c

index 99bea0f..d8fc090 100644

--- a/adb/adb.c

+++ b/adb/adb.c

@@ -1217,6 +1217,11 @@ static void drop_capabilities_bounding_set_if_needed() {

static int should_drop_privileges() {

#ifndef ALLOW_ADBD_ROOT

+       char value[PROPERTY_VALUE_MAX];

+       property_get("hw.hasusbadbroot", value, "");

+       if(strcmp(value, "1") == 0)

+       return 0;

+ else

return 1;

#else /* ALLOW_ADBD_ROOT */

int secure = 0;

同时在system.prop中添加hw.hasusbadbroot=1

2.去掉adb 密钥校验：

ro.adb.secure=0

3.修改开发者选项隐藏

packages/apps/Settings/src/com/android/settings/Settings.java

private void updateHeaderList(Listtarget) {

-        final boolean showDev = mDevelopmentPreferences.getBoolean(

-                DevelopmentSettings.PREF_SHOW,

-                android.os.Build.TYPE.equals("eng"));

-        int i = 0;

+//        final boolean showDev = mDevelopmentPreferences.getBoolean(

+//                DevelopmentSettings.PREF_SHOW,

+//                android.os.Build.TYPE.equals("eng")); //samjiang modify

+               final boolean showDev = true;

+               int i = 0;

final UserManager um = (UserManager) getSystemService(Context.USER_SERVICE);

mHeaderIndexMap.clear();

4.USB调试默认打开：

@@ -272,7 +272,7 @@ for these).

Installs APKs according to the product definition files; tags

are ignored for APK modules.

ro.secure=1

-

ro.debuggable=0

+

ro.debuggable=1

adb is disabled by default.

"make user"

This is the flavor intended to be the final release bits.Installs modules tagged with shell_$(TARGET_SHELL) and user.

Installs non-APK modules that have no tags specified.

Installs APKs according to the product definition files; tags

are ignored for APK modules.

ro.secure=1

ro.debuggable=1

adb is disabled by default.

@@ -350,7 +350,7 @@ ifeq (true,$(strip $(enable_target_debugging)))

INCLUDE_TEST_OTA_KEYS := true

else # !enable_target_debugging

# Target is less debuggable and adbd is off by default

-  ADDITIONAL_DEFAULT_PROPERTIES += ro.debuggable=0

+  ADDITIONAL_DEFAULT_PROPERTIES += ro.debuggable=1

endif # !enable_target_debugging

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