mirror of https://github.com/lianthony/NT4.0
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
84 lines
2.6 KiB
84 lines
2.6 KiB
/************************** Module Header ***********************************
|
|
* fileio.h
|
|
* Function Prototypes for File I/O in Kernel mode.
|
|
*
|
|
* NOTE: these functions perform File read, seek operations.
|
|
*
|
|
* Copyright (C) 1991 - 1995 Microsoft Corporation
|
|
*
|
|
****************************************************************************/
|
|
|
|
#define CURRENTFILEPTR(pFile) (LPVOID)((LPBYTE)(pFile->pvFilePointer)\
|
|
+ pFile->dwCurrentByteOffset)
|
|
|
|
#define ENDOFFILEPTR(pFile) ( pFile->pvFilePointer + \
|
|
pFile->dwTotalSize )
|
|
|
|
#define STARTFILEPTR(pFile) ( pFile->pvFilePointer )
|
|
|
|
#define STARTFILEOFFSETPTR(pFile,offset) ( pFile->pvFilePointer + \
|
|
offset )
|
|
|
|
#define NUMBYTESREMAINING(pFile) ( pFile->dwTotalSize - \
|
|
pFile->dwCurrentByteOffset )
|
|
|
|
#define UPDATECURROFFSET(pFile,offset) (pFile->dwCurrentByteOffset +=\
|
|
offset )
|
|
|
|
#define DRV_FILE_BEGIN 0
|
|
|
|
#define DRV_FILE_CURRENT 1
|
|
|
|
#define INVALID_HANDLE_VALUE (HANDLE)-1
|
|
|
|
typedef struct _FILE
|
|
{
|
|
HANDLE hHandle; /* Handle to the file, returned by EngLoadModule */
|
|
DWORD dwTotalSize; /* Total Size of the file, as returned by
|
|
* EngMapModule.
|
|
*/
|
|
DWORD dwCurrentByteOffset; /* Current Byte Offset in the file.
|
|
* Updated after each read and DrvSetFile-
|
|
* Pointer.
|
|
*/
|
|
PVOID pvFilePointer; /* Start of the file pointer, as returned
|
|
* EngMapModule
|
|
*/
|
|
struct _FILE *pNext; /* Next File Pointer.*/
|
|
|
|
}FILE, * PFILE;
|
|
|
|
|
|
HANDLE
|
|
DrvOpenFile
|
|
(
|
|
PWSTR pwstrFileName, /* File to Open */
|
|
PDEV *pPDEV /* Pointer to PDEV */
|
|
);
|
|
|
|
BOOL
|
|
DrvReadFile
|
|
(
|
|
HANDLE hFile, /* Handle to the file */
|
|
LPVOID lpBuffer, /* Buffer to Fill */
|
|
DWORD nNumBytesToRead, /* Number of Bytes to Read */
|
|
LPDWORD lpNumBytesRead, /* Number of Bytes Read */
|
|
PDEV *pPDev /* Pointer to PDEV */
|
|
);
|
|
|
|
DWORD
|
|
DrvSetFilePointer
|
|
(
|
|
HANDLE hFile,
|
|
LONG iDistanceToMove,
|
|
DWORD dwMoveMethod,
|
|
PDEV *pPDev
|
|
);
|
|
|
|
|
|
BOOL
|
|
DrvCloseFile
|
|
(
|
|
HANDLE hFile, /* Handle to the file */
|
|
PDEV *pPDEV /* Pointer to PDEV for file List */
|
|
);
|