Document the behavior of props affecting adb root.

        return false;

    }

    // 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.

    property_get("ro.secure", value, "1");

    bool ro_secure = (strcmp(value, "1") == 0);

    property_get("ro.debuggable", value, "");

    bool ro_debuggable = (strcmp(value, "1") == 0);

    // Drop privileges if ro.secure is set...

    bool drop = ro_secure;

    property_get("ro.debuggable", value, "");

    bool ro_debuggable = (strcmp(value, "1") == 0);

    property_get("service.adb.root", value, "");

    bool adb_root = (strcmp(value, "1") == 0);

    bool adb_unroot = (strcmp(value, "0") == 0);