mirror of
https://github.com/CloverHackyColor/CloverBootloader.git
synced 2024-11-14 10:05:43 +01:00
355 lines
10 KiB
C
355 lines
10 KiB
C
/** @file
|
|
Library functions that perform file IO. Memory buffer, file system, and
|
|
fimrware volume operations are supproted.
|
|
|
|
Copyright (c) 2007, Intel Corporation. All rights reserved.<BR>
|
|
Portions copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>
|
|
|
|
This program and the accompanying materials
|
|
are licensed and made available under the terms and conditions of the BSD License
|
|
which 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.
|
|
|
|
Basic support for opening files on different device types. The device string
|
|
is in the form of DevType:Path. Current DevType is required as there is no
|
|
current mounted device concept of current working directory concept implement
|
|
by this library.
|
|
|
|
Device names are case insensative and only check the leading characters for
|
|
unique matches. Thus the following are all the same:
|
|
LoadFile0:
|
|
l0:
|
|
L0:
|
|
Lo0:
|
|
|
|
Supported Device Names:
|
|
A0x1234:0x12 - A memory buffer starting at address 0x1234 for 0x12 bytes
|
|
l1: - EFI LoadFile device one.
|
|
B0: - EFI BlockIo zero.
|
|
fs3: - EFI Simple File System device 3
|
|
Fv2: - EFI Firmware VOlume device 2
|
|
1.2.3.4:name - TFTP IP and file name
|
|
|
|
**/
|
|
|
|
#ifndef __EFI_FILE_LIB_H__
|
|
#define __EFI_FILE_LIB_H__
|
|
|
|
#include <PiDxe.h>
|
|
#include <Protocol/FirmwareVolume2.h>
|
|
#include <Protocol/FirmwareVolumeBlock.h>
|
|
#include <Protocol/BlockIo.h>
|
|
#include <Protocol/BlockIo2.h>
|
|
#include <Protocol/LoadFile.h>
|
|
#include <Protocol/LoadFile.h>
|
|
#include <Protocol/SimpleFileSystem.h>
|
|
#include <Guid/FileInfo.h>
|
|
#include <Guid/FileSystemInfo.h>
|
|
|
|
#define MAX_PATHNAME 0x200
|
|
|
|
/// Type of the file that has been opened
|
|
typedef enum {
|
|
EfiOpenLoadFile,
|
|
EfiOpenMemoryBuffer,
|
|
EfiOpenFirmwareVolume,
|
|
EfiOpenFileSystem,
|
|
EfiOpenBlockIo,
|
|
EfiOpenTftp,
|
|
EfiOpenMaxValue,
|
|
EfiOpenBlockIo2
|
|
} EFI_OPEN_FILE_TYPE;
|
|
|
|
|
|
/// Public information about the open file
|
|
typedef struct {
|
|
UINTN Version; // Common information
|
|
EFI_OPEN_FILE_TYPE Type;
|
|
EFI_DEVICE_PATH_PROTOCOL *DevicePath;
|
|
EFI_STATUS LastError;
|
|
EFI_HANDLE EfiHandle;
|
|
CHAR8 *DeviceName;
|
|
CHAR8 *FileName;
|
|
|
|
UINT64 CurrentPosition; // Information for Seek
|
|
UINT64 MaxPosition;
|
|
|
|
UINTN BaseOffset; // Base offset for hexdump command
|
|
|
|
UINTN Size; // Valid for all types other than l#:
|
|
UINT8 *Buffer; // Information valid for A#:
|
|
|
|
EFI_FIRMWARE_VOLUME2_PROTOCOL *Fv; // Information valid for Fv#:
|
|
EFI_GUID FvNameGuid;
|
|
EFI_SECTION_TYPE FvSectionType;
|
|
EFI_FV_FILETYPE FvType;
|
|
EFI_FV_FILE_ATTRIBUTES FvAttributes;
|
|
|
|
EFI_PHYSICAL_ADDRESS FvStart;
|
|
UINTN FvSize;
|
|
UINTN FvHeaderSize;
|
|
|
|
EFI_FILE *FsFileHandle; // Information valid for Fs#:
|
|
EFI_FILE_SYSTEM_INFO *FsInfo;
|
|
EFI_FILE_INFO *FsFileInfo;
|
|
EFI_BLOCK_IO_MEDIA *FsBlockIoMedia; // Information valid for Fs#: or B#:
|
|
EFI_BLOCK_IO_PROTOCOL *FsBlockIo; // Information valid for Fs#: or B#:
|
|
EFI_BLOCK_IO2_PROTOCOL *FsBlockIo2; // Information valid for Fs#: or B#:
|
|
EFI_BLOCK_IO2_TOKEN FsBlockIo2Token;
|
|
|
|
UINTN DiskOffset; // Information valid for B#:
|
|
|
|
EFI_LOAD_FILE_PROTOCOL *LoadFile; // Information valid for l#:
|
|
|
|
EFI_IP_ADDRESS ServerIp; // Information valid for t:
|
|
BOOLEAN IsDirty;
|
|
BOOLEAN IsBufferValid;
|
|
|
|
} EFI_OPEN_FILE;
|
|
|
|
|
|
/// Type of Seek to perform
|
|
typedef enum {
|
|
EfiSeekStart,
|
|
EfiSeekCurrent,
|
|
EfiSeekEnd,
|
|
EfiSeekMax
|
|
} EFI_SEEK_TYPE;
|
|
|
|
|
|
/**
|
|
Open a device named by PathName. The PathName includes a device name and
|
|
path separated by a :. See file header for more details on the PathName
|
|
syntax. There is no checking to prevent a file from being opened more than
|
|
one type.
|
|
|
|
SectionType is only used to open an FV. Each file in an FV contains multiple
|
|
sections and only the SectionType section is opened.
|
|
|
|
For any file that is opened with EfiOpen() must be closed with EfiClose().
|
|
|
|
@param PathName Path to parse to open
|
|
@param OpenMode Same as EFI_FILE.Open()
|
|
@param SectionType Section in FV to open.
|
|
|
|
@return NULL Open failed
|
|
@return Valid EFI_OPEN_FILE handle
|
|
|
|
**/
|
|
EFI_OPEN_FILE *
|
|
EfiOpen (
|
|
IN CHAR8 *PathName,
|
|
IN CONST UINT64 OpenMode,
|
|
IN CONST EFI_SECTION_TYPE SectionType
|
|
);
|
|
|
|
EFI_STATUS
|
|
EfiCopyFile (
|
|
IN CHAR8 *DestinationFile,
|
|
IN CHAR8 *SourceFile
|
|
);
|
|
|
|
/**
|
|
Use DeviceType and Index to form a valid PathName and try and open it.
|
|
|
|
@param DeviceType Device type to open
|
|
@param Index Device Index to use. Zero relative.
|
|
|
|
@return NULL Open failed
|
|
@return Valid EFI_OPEN_FILE handle
|
|
|
|
**/
|
|
EFI_OPEN_FILE *
|
|
EfiDeviceOpenByType (
|
|
IN EFI_OPEN_FILE_TYPE DeviceType,
|
|
IN UINTN Index
|
|
);
|
|
|
|
|
|
/**
|
|
Close a file handle opened by EfiOpen() and free all resources allocated by
|
|
EfiOpen().
|
|
|
|
@param Stream Open File Handle
|
|
|
|
@return EFI_INVALID_PARAMETER Stream is not an Open File
|
|
@return EFI_SUCCESS Steam closed
|
|
|
|
**/
|
|
EFI_STATUS
|
|
EfiClose (
|
|
IN EFI_OPEN_FILE *Stream
|
|
);
|
|
|
|
|
|
/**
|
|
Return the size of the file represented by Stream. Also return the current
|
|
Seek position. Opening a file will enable a valid file size to be returned.
|
|
LoadFile is an exception as a load file size is set to zero.
|
|
|
|
@param Stream Open File Handle
|
|
|
|
@return 0 Stream is not an Open File or a valid LoadFile handle
|
|
|
|
**/
|
|
UINTN
|
|
EfiTell (
|
|
IN EFI_OPEN_FILE *Stream,
|
|
OUT UINT64 *CurrentPosition OPTIONAL
|
|
);
|
|
|
|
|
|
/**
|
|
Seek to the Offset location in the file. LoadFile and FV device types do
|
|
not support EfiSeek(). It is not possible to grow the file size using
|
|
EfiSeek().
|
|
|
|
SeekType defines how use Offset to calculate the new file position:
|
|
EfiSeekStart : Position = Offset
|
|
EfiSeekCurrent: Position is Offset bytes from the current position
|
|
EfiSeekEnd : Only supported if Offset is zero to seek to end of file.
|
|
|
|
@param Stream Open File Handle
|
|
@param Offset Offset to seek too.
|
|
@param SeekType Type of seek to perform
|
|
|
|
|
|
@return EFI_INVALID_PARAMETER Stream is not an Open File
|
|
@return EFI_UNSUPPORTED LoadFile and FV does not support Seek
|
|
@return EFI_NOT_FOUND Seek past the end of the file.
|
|
@return EFI_SUCCESS Steam closed
|
|
|
|
**/
|
|
EFI_STATUS
|
|
EfiSeek (
|
|
IN EFI_OPEN_FILE *Stream,
|
|
IN EFI_LBA Offset,
|
|
IN EFI_SEEK_TYPE SeekType
|
|
);
|
|
|
|
|
|
/**
|
|
Read BufferSize bytes from the current location in the file. For load file
|
|
and FV case you must read the entire file.
|
|
|
|
@param Stream Open File Handle
|
|
@param Buffer Caller allocated buffer.
|
|
@param BufferSize Size of buffer in bytes.
|
|
|
|
|
|
@return EFI_SUCCESS Stream is not an Open File
|
|
@return EFI_END_OF_FILE Tried to read past the end of the file
|
|
@return EFI_INVALID_PARAMETER Stream is not an open file handle
|
|
@return EFI_BUFFER_TOO_SMALL Buffer is not big enough to do the read
|
|
@return "other" Error returned from device read
|
|
|
|
**/
|
|
EFI_STATUS
|
|
EfiRead (
|
|
IN EFI_OPEN_FILE *Stream,
|
|
OUT VOID *Buffer,
|
|
OUT UINTN *BufferSize
|
|
);
|
|
|
|
|
|
/**
|
|
Read the entire file into a buffer. This routine allocates the buffer and
|
|
returns it to the user full of the read data.
|
|
|
|
This is very useful for load file where it's hard to know how big the buffer
|
|
must be.
|
|
|
|
@param Stream Open File Handle
|
|
@param Buffer Pointer to buffer to return.
|
|
@param BufferSize Pointer to Size of buffer return..
|
|
|
|
|
|
@return EFI_SUCCESS Stream is not an Open File
|
|
@return EFI_END_OF_FILE Tried to read past the end of the file
|
|
@return EFI_INVALID_PARAMETER Stream is not an open file handle
|
|
@return EFI_BUFFER_TOO_SMALL Buffer is not big enough to do the read
|
|
@return "other" Error returned from device read
|
|
|
|
**/
|
|
EFI_STATUS
|
|
EfiReadAllocatePool (
|
|
IN EFI_OPEN_FILE *Stream,
|
|
OUT VOID **Buffer,
|
|
OUT UINTN *BufferSize
|
|
);
|
|
|
|
|
|
/**
|
|
Write data back to the file.
|
|
|
|
@param Stream Open File Handle
|
|
@param Buffer Pointer to buffer to return.
|
|
@param BufferSize Pointer to Size of buffer return..
|
|
|
|
|
|
@return EFI_SUCCESS Stream is not an Open File
|
|
@return EFI_END_OF_FILE Tried to read past the end of the file
|
|
@return EFI_INVALID_PARAMETER Stream is not an open file handle
|
|
@return EFI_BUFFER_TOO_SMALL Buffer is not big enough to do the read
|
|
@return "other" Error returned from device write
|
|
|
|
**/
|
|
EFI_STATUS
|
|
EfiWrite (
|
|
IN EFI_OPEN_FILE *Stream,
|
|
OUT VOID *Buffer,
|
|
OUT UINTN *BufferSize
|
|
);
|
|
|
|
|
|
/**
|
|
Return the number of devices of the current type active in the system
|
|
|
|
@param Type Device type to check
|
|
|
|
@return 0 Invalid type
|
|
|
|
**/
|
|
UINTN
|
|
EfiGetDeviceCounts (
|
|
IN EFI_OPEN_FILE_TYPE Type
|
|
);
|
|
|
|
|
|
/**
|
|
Set the Current Working Directory (CWD). If a call is made to EfiOpen () and
|
|
the path does not contain a device name, The CWD is prepended to the path.
|
|
|
|
@param Cwd Current Working Directory to set
|
|
|
|
|
|
@return EFI_SUCCESS CWD is set
|
|
@return EFI_INVALID_PARAMETER Cwd is not a valid device:path
|
|
|
|
**/
|
|
EFI_STATUS
|
|
EfiSetCwd (
|
|
IN CHAR8 *Cwd
|
|
);
|
|
|
|
/**
|
|
Set the Current Working Directory (CWD). If a call is made to EfiOpen () and
|
|
the path does not contain a device name, The CWD is prepended to the path.
|
|
|
|
@param Cwd Current Working Directory
|
|
|
|
|
|
@return NULL No CWD set
|
|
@return 'other' malloc'ed buffer contains CWD.
|
|
|
|
**/
|
|
CHAR8 *
|
|
EfiGetCwd (
|
|
VOID
|
|
);
|
|
|
|
#endif
|