mirror of https://github.com/acidanthera/audk.git
329 lines
10 KiB
C
329 lines
10 KiB
C
/** @file
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SimpleFileSystem protocol as defined in the EFI 1.0 specification.
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The SimpleFileSystem protocol is the programatic access to the FAT (12,16,32)
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file system specified in EFI 1.0. It can also be used to abstract a file
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system other than FAT.
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EFI 1.0 can boot from any valid EFI image contained in a SimpleFileSystem
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Copyright (c) 2006, Intel Corporation
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All rights reserved. This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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which accompanies this distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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Module Name: SimpleFileSystem.h
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**/
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#ifndef __SIMPLE_FILE_SYSTEM_H__
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#define __SIMPLE_FILE_SYSTEM_H__
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#define EFI_SIMPLE_FILE_SYSTEM_PROTOCOL_GUID \
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{ \
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0x964e5b22, 0x6459, 0x11d2, {0x8e, 0x39, 0x0, 0xa0, 0xc9, 0x69, 0x72, 0x3b } \
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}
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typedef struct _EFI_SIMPLE_FILE_SYSTEM_PROTOCOL EFI_SIMPLE_FILE_SYSTEM_PROTOCOL;
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typedef struct _EFI_FILE EFI_FILE;
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typedef struct _EFI_FILE *EFI_FILE_HANDLE;
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typedef struct _EFI_FILE EFI_FILE_PROTOCOL;
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/**
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Open the root directory on a volume.
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@param This Protocol instance pointer.
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@param Root Returns an Open file handle for the root directory
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@retval EFI_SUCCESS The device was opened.
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@retval EFI_UNSUPPORTED This volume does not suppor the file system.
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@retval EFI_NO_MEDIA The device has no media.
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@retval EFI_DEVICE_ERROR The device reported an error.
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@retval EFI_VOLUME_CORRUPTED The file system structures are corrupted
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@retval EFI_ACCESS_DENIED The service denied access to the file
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@retval EFI_OUT_OF_RESOURCES The volume was not opened due to lack of resources
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EFI_SIMPLE_FILE_SYSTEM_PROTOCOL_OPEN_VOLUME) (
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IN EFI_SIMPLE_FILE_SYSTEM_PROTOCOL *This,
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OUT EFI_FILE **Root
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)
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;
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#define EFI_SIMPLE_FILE_SYSTEM_PROTOCOL_REVISION 0x00010000
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struct _EFI_SIMPLE_FILE_SYSTEM_PROTOCOL {
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UINT64 Revision;
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EFI_SIMPLE_FILE_SYSTEM_PROTOCOL_OPEN_VOLUME OpenVolume;
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};
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/**
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Open the root directory on a volume.
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@param This Protocol instance pointer.
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@param NewHandle Returns File Handle for FileName
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@param FileName Null terminated string. "\", ".", and ".." are supported
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@param OpenMode Open mode for file.
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@param Attributes Only used for EFI_FILE_MODE_CREATE
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@retval EFI_SUCCESS The device was opened.
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@retval EFI_NOT_FOUND The specified file could not be found on the device
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@retval EFI_NO_MEDIA The device has no media.
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@retval EFI_MEDIA_CHANGED The media has changed
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@retval EFI_DEVICE_ERROR The device reported an error.
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@retval EFI_VOLUME_CORRUPTED The file system structures are corrupted
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@retval EFI_ACCESS_DENIED The service denied access to the file
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@retval EFI_OUT_OF_RESOURCES The volume was not opened due to lack of resources
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@retval EFI_VOLUME_FULL The volume is full.
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EFI_FILE_OPEN) (
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IN EFI_FILE *This,
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OUT EFI_FILE **NewHandle,
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IN CHAR16 *FileName,
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IN UINT64 OpenMode,
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IN UINT64 Attributes
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)
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;
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//
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// Open modes
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//
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#define EFI_FILE_MODE_READ 0x0000000000000001ULL
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#define EFI_FILE_MODE_WRITE 0x0000000000000002ULL
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#define EFI_FILE_MODE_CREATE 0x8000000000000000ULL
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//
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// File attributes
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//
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#define EFI_FILE_READ_ONLY 0x0000000000000001ULL
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#define EFI_FILE_HIDDEN 0x0000000000000002ULL
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#define EFI_FILE_SYSTEM 0x0000000000000004ULL
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#define EFI_FILE_RESERVED 0x0000000000000008ULL
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#define EFI_FILE_DIRECTORY 0x0000000000000010ULL
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#define EFI_FILE_ARCHIVE 0x0000000000000020ULL
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#define EFI_FILE_VALID_ATTR 0x0000000000000037ULL
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/**
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Close the file handle
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@param This Protocol instance pointer.
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@retval EFI_SUCCESS The device was opened.
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EFI_FILE_CLOSE) (
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IN EFI_FILE *This
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)
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;
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/**
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Close and delete the file handle
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@param This Protocol instance pointer.
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@retval EFI_SUCCESS The device was opened.
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@retval EFI_WARN_DELETE_FAILURE The handle was closed but the file was not deleted
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EFI_FILE_DELETE) (
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IN EFI_FILE *This
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)
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;
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/**
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Read data from the file.
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@param This Protocol instance pointer.
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@param BufferSize On input size of buffer, on output amount of data in buffer.
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@param Buffer The buffer in which data is read.
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@retval EFI_SUCCESS Data was read.
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@retval EFI_NO_MEDIA The device has no media
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@retval EFI_DEVICE_ERROR The device reported an error
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@retval EFI_VOLUME_CORRUPTED The file system structures are corrupted
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@retval EFI_BUFFER_TO_SMALL BufferSize is too small. BufferSize contains required size
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EFI_FILE_READ) (
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IN EFI_FILE *This,
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IN OUT UINTN *BufferSize,
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OUT VOID *Buffer
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)
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;
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/**
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Write data from to the file.
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@param This Protocol instance pointer.
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@param BufferSize On input size of buffer, on output amount of data in buffer.
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@param Buffer The buffer in which data to write.
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@retval EFI_SUCCESS Data was written.
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@retval EFI_UNSUPPORT Writes to Open directory are not supported
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@retval EFI_NO_MEDIA The device has no media
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@retval EFI_DEVICE_ERROR The device reported an error
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@retval EFI_VOLUME_CORRUPTED The file system structures are corrupted
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@retval EFI_WRITE_PROTECTED The device is write protected
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@retval EFI_ACCESS_DENIED The file was open for read only
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@retval EFI_VOLUME_FULL The volume is full
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EFI_FILE_WRITE) (
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IN EFI_FILE *This,
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IN OUT UINTN *BufferSize,
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IN VOID *Buffer
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)
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;
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/**
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Set a files current position
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@param This Protocol instance pointer.
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@param Position Byte possition from the start of the file
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@retval EFI_SUCCESS Data was written.
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@retval EFI_UNSUPPORTED Seek request for non-zero is not valid on open.
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EFI_FILE_SET_POSITION) (
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IN EFI_FILE *This,
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IN UINT64 Position
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)
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;
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/**
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Get a files current position
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@param This Protocol instance pointer.
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@param Position Byte possition from the start of the file
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@retval EFI_SUCCESS Data was written.
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@retval EFI_UNSUPPORTED Seek request for non-zero is not valid on open.
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EFI_FILE_GET_POSITION) (
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IN EFI_FILE *This,
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OUT UINT64 *Position
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)
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;
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/**
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Get information about a file
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@param This Protocol instance pointer.
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@param InformationType Type of info to return in Buffer
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@param BufferSize On input size of buffer, on output amount of data in buffer.
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@param Buffer The buffer to return data.
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@retval EFI_SUCCESS Data was returned.
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@retval EFI_UNSUPPORT InformationType is not supported
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@retval EFI_NO_MEDIA The device has no media
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@retval EFI_DEVICE_ERROR The device reported an error
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@retval EFI_VOLUME_CORRUPTED The file system structures are corrupted
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@retval EFI_WRITE_PROTECTED The device is write protected
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@retval EFI_ACCESS_DENIED The file was open for read only
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@retval EFI_BUFFER_TOO_SMALL Buffer was too small, required size returned in BufferSize
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EFI_FILE_GET_INFO) (
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IN EFI_FILE *This,
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IN EFI_GUID *InformationType,
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IN OUT UINTN *BufferSize,
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OUT VOID *Buffer
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)
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;
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/**
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Set information about a file
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@param File Protocol instance pointer.
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@param InformationType Type of info in Buffer
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@param BufferSize Size of buffer.
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@param Buffer The data to write.
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@retval EFI_SUCCESS Data was returned.
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@retval EFI_UNSUPPORT InformationType is not supported
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@retval EFI_NO_MEDIA The device has no media
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@retval EFI_DEVICE_ERROR The device reported an error
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@retval EFI_VOLUME_CORRUPTED The file system structures are corrupted
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@retval EFI_WRITE_PROTECTED The device is write protected
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@retval EFI_ACCESS_DENIED The file was open for read only
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EFI_FILE_SET_INFO) (
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IN EFI_FILE *This,
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IN EFI_GUID *InformationType,
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IN UINTN BufferSize,
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IN VOID *Buffer
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)
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;
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/**
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Flush data back for the file handle
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@param This Protocol instance pointer.
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@retval EFI_SUCCESS Data was written.
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@retval EFI_UNSUPPORT Writes to Open directory are not supported
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@retval EFI_NO_MEDIA The device has no media
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@retval EFI_DEVICE_ERROR The device reported an error
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@retval EFI_VOLUME_CORRUPTED The file system structures are corrupted
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@retval EFI_WRITE_PROTECTED The device is write protected
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@retval EFI_ACCESS_DENIED The file was open for read only
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@retval EFI_VOLUME_FULL The volume is full
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EFI_FILE_FLUSH) (
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IN EFI_FILE *This
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)
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;
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#define EFI_FILE_HANDLE_REVISION 0x00010000
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#define EFI_FILE_PROTOCOL_REVISION EFI_FILE_HANDLE_REVISION
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struct _EFI_FILE {
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UINT64 Revision;
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EFI_FILE_OPEN Open;
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EFI_FILE_CLOSE Close;
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EFI_FILE_DELETE Delete;
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EFI_FILE_READ Read;
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EFI_FILE_WRITE Write;
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EFI_FILE_GET_POSITION GetPosition;
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EFI_FILE_SET_POSITION SetPosition;
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EFI_FILE_GET_INFO GetInfo;
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EFI_FILE_SET_INFO SetInfo;
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EFI_FILE_FLUSH Flush;
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};
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extern EFI_GUID gEfiSimpleFileSystemProtocolGuid;
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#endif
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