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/** @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 - 2018, Intel Corporation. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
#ifndef __FILE_SYSTEM_INFO_H__
#define __FILE_SYSTEM_INFO_H__
#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
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