FileSystemInfo_8h_source.html

 /** @file
   Provides a GUID and a data structure that can be used with EFI_FILE_PROTOCOL.GetInfo()
   or EFI_FILE_PROTOCOL.SetInfo() to get or set information about the system's volume.
   This GUID is defined in UEFI specification.

 Copyright (c) 2006 - 2010, Intel Corporation. All rights reserved.<BR>
 This program and the accompanying materials are licensed and made available under
 the terms and conditions of the BSD License that 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__

 FILE_LICENCE ( BSD3 );

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

 typedef struct {
   ///
   /// The size of the EFI_FILE_SYSTEM_INFO structure, including the Null-terminated VolumeLabel string.
   ///
   UINT64  Size;
   ///
   /// TRUE if the volume only supports read access.
   ///
   BOOLEAN ReadOnly;
   ///
   /// The number of bytes managed by the file system.
   ///
   UINT64  VolumeSize;
   ///
   /// The number of available bytes for use by the file system.
   ///
   UINT64  FreeSpace;
   ///
   /// The nominal block size by which files are typically grown.
   ///
   UINT32  BlockSize;
   ///
   /// The Null-terminated string that is the volume's label.
   ///
   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  OFFSET_OF (EFI_FILE_SYSTEM_INFO, VolumeLabel)

 extern EFI_GUID gEfiFileSystemInfoGuid;

 #endif
EFI_FILE_SYSTEM_INFO::ReadOnly
BOOLEAN ReadOnly
TRUE if the volume only supports read access.
Definition: FileSystemInfo.h:35

GUID
128 bit buffer containing a unique identifier value.
Definition: Base.h:263

BOOLEAN
unsigned char BOOLEAN
Definition: ProcessorBind.h:61

UINT32
unsigned int UINT32
Definition: ProcessorBind.h:56

CHAR16
unsigned short CHAR16
Definition: ProcessorBind.h:59

EFI_FILE_SYSTEM_INFO::FreeSpace
UINT64 FreeSpace
The number of available bytes for use by the file system.
Definition: FileSystemInfo.h:43

EFI_FILE_SYSTEM_INFO::VolumeSize
UINT64 VolumeSize
The number of bytes managed by the file system.
Definition: FileSystemInfo.h:39

UINT64
unsigned long long UINT64
Definition: ProcessorBind.h:54

EFI_FILE_SYSTEM_INFO
Definition: FileSystemInfo.h:27

EFI_FILE_SYSTEM_INFO::BlockSize
UINT32 BlockSize
The nominal block size by which files are typically grown.
Definition: FileSystemInfo.h:47

EFI_FILE_SYSTEM_INFO::Size
UINT64 Size
The size of the EFI_FILE_SYSTEM_INFO structure, including the Null-terminated VolumeLabel string.
Definition: FileSystemInfo.h:31

FILE_LICENCE
FILE_LICENCE(BSD3)

gEfiFileSystemInfoGuid
EFI_GUID gEfiFileSystemInfoGuid