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
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
|
/* nt4_dev.c - routines for direct drive access in Windows NT 4.0
*
* Copyright 1999 by Dan Sutherland <dan@chromerhino.demon.co.uk>
*
* These routines only currently work with drives <2GB and 512 bytes per sector
*
* This file is part of ADFLib.
*
* ADFLib is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* ADFLib is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Foobar; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <windows.h>
#include <winioctl.h>
#include <stdio.h>
#include "nt4_dev.h"
HANDLE NT4OpenDrive(char *lpstrDrive)
{
char strDriveFile[40];
HANDLE hDrv;
DWORD dwRet;
switch (lpstrDrive[0]) {
case 'H':
sprintf(strDriveFile, "\\\\.\\PhysicalDrive%c", lpstrDrive[1]);
break;
/* add support for other device types here */
default:
return NULL;
}
hDrv = CreateFile(strDriveFile, GENERIC_READ | GENERIC_WRITE,
FILE_SHARE_READ | FILE_SHARE_WRITE, NULL, OPEN_EXISTING,
0, NULL);
if (hDrv == INVALID_HANDLE_VALUE)
return NULL;
if (! DeviceIoControl(hDrv, FSCTL_LOCK_VOLUME, NULL, 0, NULL, 0,
&dwRet, NULL))
return NULL;
return hDrv;
}
BOOL NT4CloseDrive(HANDLE hDrv)
{
DWORD dwRet;
if( hDrv==NULL ) return TRUE; /* BV */
if (! DeviceIoControl(hDrv, FSCTL_UNLOCK_VOLUME, NULL, 0, NULL, 0,
&dwRet, NULL))
return FALSE;
if (! CloseHandle(hDrv))
return FALSE;
return TRUE;
}
BOOL NT4ReadSector(HANDLE hDrv, long iSect, int iSize, void *lpvoidBuf)
{
void *lpvoidTempBuf;
DWORD dwActual;
lpvoidTempBuf = VirtualAlloc(NULL, 512, MEM_COMMIT, PAGE_READWRITE);
if (SetFilePointer(hDrv, iSect * 512, NULL, FILE_BEGIN) == 0xFFFFFFFF) {
VirtualFree(lpvoidTempBuf, 0, MEM_RELEASE);
return FALSE;
}
if (! ReadFile(hDrv, lpvoidTempBuf, 512, &dwActual, NULL)) {
VirtualFree(lpvoidTempBuf, 0, MEM_RELEASE);
return FALSE;
}
memcpy(lpvoidBuf, lpvoidTempBuf, iSize);
VirtualFree(lpvoidTempBuf, 0, MEM_RELEASE);
return TRUE;
}
BOOL NT4WriteSector(HANDLE hDrv, long iSect, int iSize, void *lpvoidBuf)
{
void *lpvoidTempBuf;
DWORD dwActual;
if (iSize != 512)
return FALSE;
lpvoidTempBuf = VirtualAlloc(NULL, 512, MEM_COMMIT, PAGE_READWRITE);
if (SetFilePointer(hDrv, iSect * 512, NULL, FILE_BEGIN) == 0xFFFFFFFF) {
VirtualFree(lpvoidTempBuf, 0, MEM_RELEASE);
return FALSE;
}
memcpy(lpvoidTempBuf, lpvoidBuf, iSize);
if (! WriteFile(hDrv, lpvoidTempBuf, 512, &dwActual, NULL)) {
VirtualFree(lpvoidTempBuf, 0, MEM_RELEASE);
return FALSE;
}
VirtualFree(lpvoidTempBuf, 0, MEM_RELEASE);
return TRUE;
}
ULONG NT4GetDriveSize(HANDLE hDrv)
{
DWORD dwActual;
DISK_GEOMETRY dgGeom;
long size;
DeviceIoControl(hDrv, IOCTL_DISK_GET_DRIVE_GEOMETRY, NULL, 0,
&dgGeom, sizeof(DISK_GEOMETRY), &dwActual, NULL);
size = dgGeom.Cylinders.LowPart * dgGeom.TracksPerCylinder *
dgGeom.SectorsPerTrack * dgGeom.BytesPerSector;
/* BV */
/* printf("Total sectors: %i\n", dgGeom.Cylinders.LowPart * dgGeom.TracksPerCylinder * dgGeom.SectorsPerTrack);
** printf("Byte size: %i\n", size);
*/
return size;
}
|
