32 enum class VolumeMethod { kFailed, kCrypt, kDefaultKey };  enum
34 static VolumeMethod lookup_volume_method() {  in lookup_volume_method()
39         return first_api_level > __ANDROID_API_Q__ ? VolumeMethod::kDefaultKey  in lookup_volume_method()
40                                                    : VolumeMethod::kCrypt;  in lookup_volume_method()
42         return VolumeMethod::kDefaultKey;  in lookup_volume_method()
48             return VolumeMethod::kFailed;  in lookup_volume_method()
50         return VolumeMethod::kCrypt;  in lookup_volume_method()
53         return VolumeMethod::kFailed;  in lookup_volume_method()
57 static VolumeMethod volume_method() {  in volume_method()
58     static VolumeMethod method = lookup_volume_method();  in volume_method()
65         case VolumeMethod::kFailed:  in generate_volume_key()
68         case VolumeMethod::kCrypt:  in generate_volume_key()
71         case VolumeMethod::kDefaultKey:  in generate_volume_key()
82         case VolumeMethod::kFailed:  in setup_ext_volume()
85         case VolumeMethod::kCrypt:  in setup_ext_volume()
88         case VolumeMethod::kDefaultKey:  in setup_ext_volume()