-/*++\r
-\r
-Routine Description:\r
-\r
- Implements Simple File System Protocol interface function OpenVolume().\r
-\r
-Arguments:\r
-\r
- This - Calling context.\r
- File - the Root Directory of the volume.\r
-\r
-Returns:\r
-\r
- EFI_OUT_OF_RESOURCES - Can not allocate the memory.\r
- EFI_VOLUME_CORRUPTED - The FAT type is error.\r
- EFI_SUCCESS - Open the volume successfully.\r
-\r
---*/\r