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58 lines
1.8 KiB
C
58 lines
1.8 KiB
C
/** @file
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Provides a GUID and a data structure that can be used with EFI_FILE_PROTOCOL.GetInfo()
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or EFI_FILE_PROTOCOL.SetInfo() to get or set information about the system's volume.
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This GUID is defined in UEFI specification.
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Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>
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SPDX-License-Identifier: BSD-2-Clause-Patent
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**/
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#ifndef __FILE_SYSTEM_INFO_H__
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#define __FILE_SYSTEM_INFO_H__
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#define EFI_FILE_SYSTEM_INFO_ID \
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{ \
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0x9576e93, 0x6d3f, 0x11d2, {0x8e, 0x39, 0x0, 0xa0, 0xc9, 0x69, 0x72, 0x3b } \
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}
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typedef struct {
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///
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/// The size of the EFI_FILE_SYSTEM_INFO structure, including the Null-terminated VolumeLabel string.
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///
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UINT64 Size;
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///
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/// TRUE if the volume only supports read access.
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///
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BOOLEAN ReadOnly;
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///
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/// The number of bytes managed by the file system.
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///
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UINT64 VolumeSize;
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///
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/// The number of available bytes for use by the file system.
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///
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UINT64 FreeSpace;
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///
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/// The nominal block size by which files are typically grown.
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///
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UINT32 BlockSize;
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///
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/// The Null-terminated string that is the volume's label.
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///
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CHAR16 VolumeLabel[1];
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} EFI_FILE_SYSTEM_INFO;
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///
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/// The VolumeLabel field of the EFI_FILE_SYSTEM_INFO data structure is variable length.
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/// Whenever code needs to know the size of the EFI_FILE_SYSTEM_INFO data structure, it needs
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/// to be the size of the data structure without the VolumeLable field. The following macro
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/// computes this size correctly no matter how big the VolumeLable array is declared.
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/// This is required to make the EFI_FILE_SYSTEM_INFO data structure ANSI compilant.
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///
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#define SIZE_OF_EFI_FILE_SYSTEM_INFO OFFSET_OF (EFI_FILE_SYSTEM_INFO, VolumeLabel)
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extern EFI_GUID gEfiFileSystemInfoGuid;
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#endif
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