mirror of
https://github.com/CloverHackyColor/CloverBootloader.git
synced 2024-12-18 15:27:48 +01:00
77 lines
1.5 KiB
C
77 lines
1.5 KiB
C
/*++
|
|
|
|
Copyright (c) 2005 - 2013, Intel Corporation. All rights reserved.<BR>
|
|
This program and the accompanying materials
|
|
are licensed and made available under the terms and conditions of the Software
|
|
License Agreement which accompanies this distribution.
|
|
|
|
|
|
Module Name:
|
|
|
|
OpenVolume.c
|
|
|
|
Abstract:
|
|
|
|
OpenVolume() function of Simple File System Protocol
|
|
|
|
Revision History
|
|
|
|
--*/
|
|
|
|
#include "Fat.h"
|
|
|
|
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;
|
|
}
|