2、修改的步骤:
修改system/core/include/private/android_filesystem_config.h文件添加system/bin/su权限
{ 06750, AID_ROOT, AID_SHELL, "system/bin/run-as" },
+ { 04755, AID_ROOT, AID_SHELL, "system/bin/su" },
{ 00755, AID_ROOT, AID_SHELL, "system/bin/*" },
{ 00755, AID_ROOT, AID_ROOT, "system/lib/valgrind/*" },
{ 00755, AID_ROOT, AID_SHELL, "system/xbin/*" },