MdePkg/Include/Guid/FileSystemInfo.h

/** @file
  FileSystemInfo guid and data structure as defined in the EFI 1.0 specification.

  Copyright (c) 2006, Intel Corporation                                                         
  All rights reserved. This program and the accompanying materials                          
  are licensed and made available under the terms and conditions of the BSD License         
  which accompanies this distribution.  The full text of the license may be found at        
  http://opensource.org/licenses/bsd-license.php                                            

  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,                     
  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.             

**/

#ifndef __FILE_SYSTEM_INFO_H__
#define __FILE_SYSTEM_INFO_H__

#define EFI_FILE_SYSTEM_INFO_ID_GUID \
  { \
    0x9576e93, 0x6d3f, 0x11d2, {0x8e, 0x39, 0x0, 0xa0, 0xc9, 0x69, 0x72, 0x3b } \
  }

typedef struct {
  UINT64  Size;
  BOOLEAN ReadOnly;
  UINT64  VolumeSize;
  UINT64  FreeSpace;
  UINT32  BlockSize;
  CHAR16  VolumeLabel[1];
} EFI_FILE_SYSTEM_INFO;

//
// The VolumeLabel field of the EFI_FILE_SYSTEM_INFO data structure is variable length.
// Whenever code needs to know the size of the EFI_FILE_SYSTEM_INFO data structure, it needs
// to be the size of the data structure without the VolumeLable field.  The following macro
// computes this size correctly no matter how big the VolumeLable array is declared.
// This is required to make the EFI_FILE_SYSTEM_INFO data structure ANSI compilant.
//
#define SIZE_OF_EFI_FILE_SYSTEM_INFO  EFI_FIELD_OFFSET (EFI_FILE_SYSTEM_INFO, VolumeLabel)

extern EFI_GUID gEfiFileSystemInfoGuid;

#endif