adb shell su有效，但adb root无效

Question

我把我解锁的Galaxy S3(SGH-T999)

现在，我试图从Windows命令提示符运行adb root，但是，我得到了adbd不能在生产版本中作为root运行错误。所以，我首先检查的是我的手机是否真的有根？

于是我尝试了以下几点：

打开命令提示符

$adb devices // lists my device
$adb shell //goes to shell
$su // opens a 'SuperSu' prompt on my phone and I 'Grant' permission
# // Before following the rooting instructions, I was getting 'no su command found' in the previous step. So, I believe my phone is ROOTED. **Correct me if I'm wrong.**

null

Answer 1

根据设计，adb root命令仅在开发生成中工作（即eng和userdebug，它们默认情况下具有ro.debuggable=1)。因此，要在根设备上启用adb root命令，只需将ro.debuggable=1行添加到以下文件之一：

/system/build.prop
/system/default.prop
/data/local.prop

如果您希望adb shell默认情况下以root的身份开始，那么还可以添加ro.secure=0。

或者，您可以使用修改的adbdbinary（它不检查ro.debuggable)

摘自https://android.googlesource.com/platform/system/core/+/master/adb/daemon/main.cpp

#if defined(ALLOW_ADBD_ROOT)
// The properties that affect `adb root` and `adb unroot` are ro.secure and
// ro.debuggable. In this context the names don't make the expected behavior
// particularly obvious.
//
// ro.debuggable:
//   Allowed to become root, but not necessarily the default. Set to 1 on
//   eng and userdebug builds.
//
// ro.secure:
//   Drop privileges by default. Set to 1 on userdebug and user builds.