EFI_STATUS
EFIAPI
FatDriverBindingStop (
IN EFI_DRIVER_BINDING_PROTOCOL *This,
IN EFI_HANDLE ControllerHandle,
IN UINTN NumberOfChildren,
IN EFI_HANDLE *ChildHandleBuffer
)
/*++
Routine Description:
Stop this driver on ControllerHandle.
Arguments:
This - Protocol instance pointer.
ControllerHandle - Handle of device to stop driver on.
NumberOfChildren - Not used.
ChildHandleBuffer - Not used.
Returns:
EFI_SUCCESS - This driver is removed DeviceHandle.
other - This driver was not removed from this device.
--*/
{
EFI_STATUS Status;
EFI_SIMPLE_FILE_SYSTEM_PROTOCOL *FileSystem;
FAT_VOLUME *Volume;
//
// Get our context back
//
Status = gBS->OpenProtocol (
ControllerHandle,
&gEfiSimpleFileSystemProtocolGuid,
(VOID **) &FileSystem,
This->DriverBindingHandle,
ControllerHandle,
EFI_OPEN_PROTOCOL_GET_PROTOCOL
);
if (!EFI_ERROR (Status)) {
Volume = VOLUME_FROM_VOL_INTERFACE (FileSystem);
Status = FatAbandonVolume (Volume);
if (EFI_ERROR (Status)) {
return Status;
}
}
Status = gBS->CloseProtocol (
ControllerHandle,
&gEfiDiskIoProtocolGuid,
This->DriverBindingHandle,
ControllerHandle
);
return Status;
}
EFI_STATUS
EFIAPI
FatOpenVolume (
IN EFI_SIMPLE_FILE_SYSTEM_PROTOCOL *This,
OUT EFI_FILE_PROTOCOL **File
)
/*++
Routine Description:
Implements Simple File System Protocol interface function OpenVolume().
Arguments:
This - Calling context.
File - the Root Directory of the volume.
Returns:
EFI_OUT_OF_RESOURCES - Can not allocate the memory.
EFI_VOLUME_CORRUPTED - The FAT type is error.
EFI_SUCCESS - Open the volume successfully.
--*/
{
EFI_STATUS Status;
FAT_VOLUME *Volume;
FAT_IFILE *IFile;
Volume = VOLUME_FROM_VOL_INTERFACE (This);
FatAcquireLock ();
//
// Open Root file
//
Status = FatOpenDirEnt (NULL, &Volume->RootDirEnt);
if (EFI_ERROR (Status)) {
goto Done;
}
//
// Open a new instance to the root
//
Status = FatAllocateIFile (Volume->Root, &IFile);
if (!EFI_ERROR (Status)) {
*File = &IFile->Handle;
}
Done:
Status = FatCleanupVolume (Volume, Volume->Root, Status, NULL);
FatReleaseLock ();
return Status;
}
/**
Implements Simple File System Protocol interface function OpenVolume().
@param This - Calling context.
@param File - the Root Directory of the volume.
@retval EFI_OUT_OF_RESOURCES - Can not allocate the memory.
@retval EFI_VOLUME_CORRUPTED - The FAT type is error.
@retval EFI_SUCCESS - Open the volume successfully.
**/
EFI_STATUS
EFIAPI
FatOpenVolume (
IN EFI_SIMPLE_FILE_SYSTEM_PROTOCOL *This,
OUT EFI_FILE_PROTOCOL **File
)
{
EFI_STATUS Status;
FAT_VOLUME *Volume;
FAT_IFILE *IFile;
Volume = VOLUME_FROM_VOL_INTERFACE (This);
FatAcquireLock ();
//
// Open Root file
//
Status = FatOpenDirEnt (NULL, &Volume->RootDirEnt);
if (EFI_ERROR (Status)) {
goto Done;
}
//
// Open a new instance to the root
//
Status = FatAllocateIFile (Volume->Root, &IFile);
if (!EFI_ERROR (Status)) {
*File = &IFile->Handle;
}
Done:
Status = FatCleanupVolume (Volume, Volume->Root, Status, NULL);
FatReleaseLock ();
return Status;
}
