1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
|
/*
MAPDEV.h - include file for VxD MAPDEV
Copyright (c) 1996 Vireo Software, Inc.
Modified for libdha by Nick Kurshev.
*/
#include <windows.h>
/*
This is the request structure that applications use
to request services from the MAPDEV VxD.
*/
typedef struct _MapDevRequest
{
DWORD mdr_ServiceID; /* supplied by caller */
LPVOID mdr_PhysicalAddress; /* supplied by caller */
DWORD mdr_SizeInBytes; /* supplied by caller */
LPVOID mdr_LinearAddress; /* returned by VxD */
WORD mdr_Selector; /* returned if 16-bit caller */
WORD mdr_Status; /* MDR_xxxx code below */
} MAPDEVREQUEST, *PMAPDEVREQUEST;
#define MDR_SERVICE_MAP CTL_CODE(FILE_DEVICE_UNKNOWN, 1, METHOD_NEITHER, FILE_ANY_ACCESS)
#define MDR_SERVICE_UNMAP CTL_CODE(FILE_DEVICE_UNKNOWN, 2, METHOD_NEITHER, FILE_ANY_ACCESS)
#define MDR_STATUS_SUCCESS 1
#define MDR_STATUS_ERROR 0
/*#include "winioctl.h"*/
#define FILE_DEVICE_UNKNOWN 0x00000022
#define METHOD_NEITHER 3
#define FILE_ANY_ACCESS 0
#define CTL_CODE( DeviceType, Function, Method, Access ) ( \
((DeviceType)<<16) | ((Access)<<14) | ((Function)<<2) | (Method) )
/* Memory Map a piece of Real Memory */
void *map_phys_mem(unsigned base, unsigned size) {
HANDLE hDevice ;
PVOID inBuf[1] ; /* buffer for struct pointer to VxD */
DWORD RetInfo[2] ; /* buffer to receive data from VxD */
DWORD cbBytesReturned ; /* count of bytes returned from VxD */
MAPDEVREQUEST req ; /* map device request structure */
DWORD *pNicstar, Status, Time ; int i ; char *endptr ;
const PCHAR VxDName = "\\\\.\\MAPDEV.VXD" ;
const PCHAR VxDNameAlreadyLoaded = "\\\\.\\MAPDEV" ;
hDevice = CreateFile(VxDName, 0,0,0,
CREATE_NEW, FILE_FLAG_DELETE_ON_CLOSE, 0) ;
if (hDevice == INVALID_HANDLE_VALUE)
hDevice = CreateFile(VxDNameAlreadyLoaded, 0,0,0,
CREATE_NEW, FILE_FLAG_DELETE_ON_CLOSE, 0) ;
if (hDevice == INVALID_HANDLE_VALUE) {
fprintf(stderr, "Cannot open driver, error=%08lx\n", GetLastError()) ;
exit(1) ; }
req.mdr_ServiceID = MDR_SERVICE_MAP ;
req.mdr_PhysicalAddress = (PVOID)base ;
req.mdr_SizeInBytes = size ;
inBuf[0] = &req ;
if ( ! DeviceIoControl(hDevice, MDR_SERVICE_MAP, inBuf, sizeof(PVOID),
NULL, 0, &cbBytesReturned, NULL) ) {
fprintf(stderr, "Failed to map device\n") ; exit(1) ; }
return (void*)req.mdr_LinearAddress ;
}
void unmap_phys_mem(void *ptr, unsigned size) { }
|
