EdkCompatibilityPkg/Foundation/Efi/Protocol/FileSystemInfo/FileSystemInfo.h

   1 /*++
   2
   3 Copyright (c) 2004, Intel Corporation. All rights reserved.<BR>
   4 This program and the accompanying materials
   5 are licensed and made available under the terms and conditions of the BSD License
   6 which accompanies this distribution.  The full text of the license may be found at
   7 http://opensource.org/licenses/bsd-license.php
   8
   9 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  10 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  11
  12 Module Name:
  13
  14   FileSystemInfo.h
  15
  16 Abstract:
  17
  18   FileSystemInfo protocol as defined in the EFI 1.0 specification.
  19
  20
  21 --*/
  22
  23 #ifndef _FILE_SYSTEM_INFO_H_
  24 #define _FILE_SYSTEM_INFO_H_
  25
  26 #define EFI_FILE_SYSTEM_INFO_ID_GUID \
  27   { \
  28     0x9576e93, 0x6d3f, 0x11d2, {0x8e, 0x39, 0x0, 0xa0, 0xc9, 0x69, 0x72, 0x3b} \
  29   }
  30
  31 typedef struct {
  32   UINT64  Size;
  33   BOOLEAN ReadOnly;
  34   UINT64  VolumeSize;
  35   UINT64  FreeSpace;
  36   UINT32  BlockSize;
  37   CHAR16  VolumeLabel[1];
  38 } EFI_FILE_SYSTEM_INFO;
  39
  40 //
  41 // The VolumeLabel field of the EFI_FILE_SYSTEM_INFO data structure is variable length.
  42 // Whenever code needs to know the size of the EFI_FILE_SYSTEM_INFO data structure, it needs
  43 // to be the size of the data structure without the VolumeLable field.  The following macro
  44 // computes this size correctly no matter how big the VolumeLable array is declared.
  45 // This is required to make the EFI_FILE_SYSTEM_INFO data structure ANSI compilant.
  46 //
  47 #define SIZE_OF_EFI_FILE_SYSTEM_INFO  EFI_FIELD_OFFSET (EFI_FILE_SYSTEM_INFO, VolumeLabel)
  48
  49 extern EFI_GUID gEfiFileSystemInfoGuid;
  50
  51 #endif