573 lines
14 KiB
C++
573 lines
14 KiB
C++
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/*++
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Copyright (c) 2000 Microsoft Corporation
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Module Name:
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wipedisk.cpp
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Abstract:
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Utility program to zero out the partition-tables and first/last
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few sectors of disks
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Author:
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Guhan Suriyanarayanan (guhans) 30-Sep-2000
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Environment:
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User-mode only.
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Revision History:
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30-Sep-2000 guhans
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Initial creation
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--*/
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#include <nt.h>
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#include <ntrtl.h>
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#include <nturtl.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <windows.h>
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#include <ntdddisk.h>
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BOOL g_bPrompt = TRUE;
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//
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// write in 64K chunks.
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//
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#define BUFFER_SIZE_BYTES (64 * 1024)
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BOOL
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pSetSignature(
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IN CONST ULONG ulDiskNumber,
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IN CONST DWORD dwNewSignature
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)
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{
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DWORD dwStatus = ERROR_SUCCESS,
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dwBytesReturned = 0,
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dwBufferSize = 0;
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PDRIVE_LAYOUT_INFORMATION_EX driveLayoutEx;
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int i = 0, loopTimes = 0;
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BOOL bResult = FALSE;
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HANDLE hDisk = NULL,
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hHeap = NULL;
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WCHAR szFriendlyName[100]; // For display "Disk 2"
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WCHAR szDiskPath[100]; // For CreateFile "\\.\PhysicalDrive2"
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wsprintf(szFriendlyName, L"Disk %lu", ulDiskNumber);
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wsprintf(szDiskPath, L"\\\\.\\PhysicalDrive%lu", ulDiskNumber);
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hHeap = GetProcessHeap();
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hDisk = CreateFile(
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szDiskPath, // lpFileName
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GENERIC_READ | GENERIC_WRITE, // dwDesiredAccess
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FILE_SHARE_READ, // dwShareMode
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NULL, // lpSecurityAttributes
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OPEN_EXISTING, // dwCreationFlags
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FILE_FLAG_WRITE_THROUGH | FILE_FLAG_NO_BUFFERING, // dwFlagsAndAttributes
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NULL // hTemplateFile
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);
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if ((INVALID_HANDLE_VALUE == hDisk) || (NULL == hDisk)) {
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//
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// Couldn't open a handle.
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//
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wprintf(L"Unable to open a handle to %ws (%lu)\n", szDiskPath, GetLastError());
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return FALSE;
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}
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dwBufferSize = sizeof(DRIVE_LAYOUT_INFORMATION_EX) +
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(sizeof(PARTITION_INFORMATION_EX) * 3);
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driveLayoutEx = (PDRIVE_LAYOUT_INFORMATION_EX) HeapAlloc(
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hHeap,
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HEAP_ZERO_MEMORY,
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dwBufferSize
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);
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if (!driveLayoutEx) {
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wprintf(L"Could not allocate memory\n");
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dwStatus = ERROR_NOT_ENOUGH_MEMORY;
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goto EXIT;
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}
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bResult = FALSE;
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while (!bResult) {
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bResult = DeviceIoControl(
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hDisk,
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IOCTL_DISK_GET_DRIVE_LAYOUT_EX,
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NULL,
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0L,
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driveLayoutEx,
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dwBufferSize,
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&dwBytesReturned,
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NULL
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);
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if (!bResult) {
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dwStatus = GetLastError();
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HeapFree(hHeap, 0L, driveLayoutEx);
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driveLayoutEx = NULL;
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//
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// If the buffer is of insufficient size, resize the buffer.
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// Note that get-drive-layout-ex could return error-insufficient-
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// buffer (instead of? in addition to? error-more-data)
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//
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if ((ERROR_MORE_DATA == dwStatus) ||
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(ERROR_INSUFFICIENT_BUFFER == dwStatus)
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) {
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dwStatus = ERROR_SUCCESS;
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dwBufferSize += sizeof(PARTITION_INFORMATION_EX) * 4;
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driveLayoutEx = (PDRIVE_LAYOUT_INFORMATION_EX) HeapAlloc(
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hHeap,
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HEAP_ZERO_MEMORY,
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dwBufferSize
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);
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if (!driveLayoutEx) {
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wprintf(L"Could not allocate memory\n");
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dwStatus = ERROR_NOT_ENOUGH_MEMORY;
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goto EXIT;
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}
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}
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else {
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//
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// some other error occurred, EXIT, and go to the next drive.
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//
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wprintf(L"Could not get the drive layout for %ws (%lu)\n", szDiskPath, dwStatus);
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goto EXIT;
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}
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}
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}
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//
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// Now modify the signature, and set the layout again
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//
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driveLayoutEx->Mbr.Signature = dwNewSignature;
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bResult = DeviceIoControl(
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hDisk,
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IOCTL_DISK_SET_DRIVE_LAYOUT_EX,
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driveLayoutEx,
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dwBufferSize,
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NULL,
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0L,
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&dwBytesReturned,
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NULL
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);
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if (!bResult) {
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//
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// SET_DRIVE_LAYOUT failed
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//
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dwStatus = GetLastError();
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wprintf(L"Could not SET the drive layout for %ws (%lu)\n", szDiskPath, dwStatus);
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goto EXIT;
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}
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EXIT:
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if (driveLayoutEx) {
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HeapFree(hHeap, 0L, driveLayoutEx);
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driveLayoutEx = NULL;
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}
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if ((hDisk) && (INVALID_HANDLE_VALUE != hDisk)) {
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CloseHandle(hDisk);
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hDisk = NULL;
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}
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SetLastError(dwStatus);
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return bResult;
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}
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BOOL
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pConfirmWipe(
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IN CONST PCWSTR szDiskDisplayName
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)
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{
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WCHAR szInput[10];
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wprintf(L"\nWARNING. This will delete all partitions from %ws\n", szDiskDisplayName);
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wprintf(L"Are you sure you want to continue [y/n]? ");
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wscanf(L"%ws", szInput);
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wprintf(L"\n");
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return ((L'Y' == szInput[0]) || (L'y' == szInput[0]));
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}
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BOOL
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pWipeDisk(
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IN CONST ULONG ulDiskNumber,
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IN CONST ULONG ulFirstMB,
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IN CONST ULONG ulLastMB
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)
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/*++
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Routine Description:
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Deletes the drive layout for disk, and writes 0's at the start and end of the disk.
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Arguments:
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ulDiskNumber - DiskNumber to wipe
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ulFirstMB - Number of MB to erase at the beginning of the disk
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ulLastMB - Number of MB to erase at the end of the disk
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Return Values:
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If the function succeeds, the return value is a nonzero value.
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If the function fails, the return value is zero. To get extended error
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information, call GetLastError().
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--*/
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{
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DWORD dwStatus = ERROR_SUCCESS,
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dwBytes = 0;
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BYTE Buffer[BUFFER_SIZE_BYTES];
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int i = 0, loopTimes = 0;
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BOOL bResult = FALSE;
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HANDLE hDisk = NULL;
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WCHAR szFriendlyName[100]; // For display "Disk 2"
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WCHAR szDiskPath[100]; // For CreateFile "\\.\PhysicalDrive2"
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PARTITION_INFORMATION_EX ptnInfo;
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wsprintf(szFriendlyName, L"Disk %lu", ulDiskNumber);
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wsprintf(szDiskPath, L"\\\\.\\PhysicalDrive%lu", ulDiskNumber);
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ZeroMemory(Buffer, BUFFER_SIZE_BYTES);
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if (g_bPrompt && !pConfirmWipe(szFriendlyName)) {
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//
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// User didn't want to continue
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//
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SetLastError(ERROR_CANCELLED);
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return FALSE;
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}
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//
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// Set the signature to something random. We need to do this before
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// deleting the layout for the boot disk.
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//
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pSetSignature(ulDiskNumber, 0);
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hDisk = CreateFile(
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szDiskPath, // lpFileName
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GENERIC_READ | GENERIC_WRITE, // dwDesiredAccess
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FILE_SHARE_READ, // dwShareMode
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NULL, // lpSecurityAttributes
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OPEN_EXISTING, // dwCreationFlags
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FILE_FLAG_WRITE_THROUGH | FILE_FLAG_NO_BUFFERING, // dwFlagsAndAttributes
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NULL // hTemplateFile
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);
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if ((INVALID_HANDLE_VALUE == hDisk) || (NULL == hDisk)) {
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//
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// Couldn't open a handle.
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//
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wprintf(L"Unable to open a handle to %ws (%lu)\n", szDiskPath, GetLastError());
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return FALSE;
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}
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//
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// Zero out the first two sectors of each partition?
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//
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//
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// Delete the drive layout
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//
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wprintf(L"Deleting partitions on %ws ...\n", szFriendlyName);
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bResult = DeviceIoControl(
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hDisk,
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IOCTL_DISK_DELETE_DRIVE_LAYOUT,
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NULL,
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0L,
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NULL,
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0L,
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&dwBytes,
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NULL
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);
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bResult = TRUE;
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if (!bResult) {
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wprintf(L"Unable to delete partitions on %ws (%lu)\n", szDiskPath, GetLastError());
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CloseHandle(hDisk);
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return FALSE;
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}
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//
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// Erase MB at the start of the disk
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//
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if (ulFirstMB > 0) {
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wprintf(L"Erasing first %lu MB on %ws ...\n", ulFirstMB, szFriendlyName);
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//
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// Write 0's to disk in BUFFER_SIZE chunks
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//
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loopTimes = (ulFirstMB * 1024 * 1024 / BUFFER_SIZE_BYTES);
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for (i = 0; i < loopTimes; i++) {
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bResult = WriteFile(
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hDisk,
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&Buffer,
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BUFFER_SIZE_BYTES,
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&dwBytes,
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NULL
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);
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if (!bResult) {
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wprintf(L"Error while writing to %ws (%d, %lu)\n", szDiskPath, i, GetLastError());
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break;
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}
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}
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if (!bResult) {
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CloseHandle(hDisk);
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return FALSE;
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}
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}
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//
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// Erase MB at the end of the disk
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//
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if (ulLastMB > 0) {
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wprintf(L"Erasing last %lu MB on %ws ...\n", ulLastMB, szFriendlyName);
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//
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// Find the end of the disk
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//
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bResult = DeviceIoControl(
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hDisk,
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IOCTL_DISK_GET_PARTITION_INFO_EX,
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NULL,
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0,
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&ptnInfo,
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sizeof(PARTITION_INFORMATION_EX),
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&dwBytes,
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NULL
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);
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if (!bResult) {
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wprintf(L"Could not find size of disk %ws (%lu)\n", szDiskPath, GetLastError());
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CloseHandle(hDisk);
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return FALSE;
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}
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//
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// Find offset we'd like to start zero-ing out from
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// (end of disk - bytes to zero out)
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//
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ptnInfo.PartitionLength.QuadPart -= (ulLastMB * 1024 * 1024);
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dwBytes = SetFilePointer(hDisk, (ptnInfo.PartitionLength.LowPart), &(ptnInfo.PartitionLength.HighPart), FILE_BEGIN);
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if ((INVALID_SET_FILE_POINTER == dwBytes) && (NO_ERROR != GetLastError())) {
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wprintf(L"Could not move to end of disk for %ws (%lu)\n", szDiskPath, GetLastError());
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}
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//
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// Write 0's to disk in BUFFER_SIZE chunks
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//
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loopTimes = (ulLastMB * 1024 * 1024 / BUFFER_SIZE_BYTES);
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for (i = 0; i < loopTimes; i++) {
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bResult = WriteFile(
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hDisk,
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&Buffer,
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BUFFER_SIZE_BYTES,
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&dwBytes,
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NULL
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);
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if (!bResult) {
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wprintf(L"Error while writing to %ws (%d, %lu)\n", szDiskPath, i, GetLastError());
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break;
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}
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}
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if (!bResult) {
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CloseHandle(hDisk);
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return FALSE;
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}
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}
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||
|
|
CloseHandle(hDisk);
|
||
|
|
return TRUE;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
VOID
|
||
|
|
pPrintUsage(
|
||
|
|
IN CONST PCWSTR szArgV0
|
||
|
|
) {
|
||
|
|
|
||
|
|
wprintf(L"usage: %ws [/f] disk-number [mb-at-start [mb-at-end]]\n"
|
||
|
|
L" %ws /s new-signature disk-number\n"
|
||
|
|
L"\n"
|
||
|
|
L" /f: Suppress the prompt to confirm action\n"
|
||
|
|
L"\n"
|
||
|
|
L" disk-number: The NT disk-number of the disk that\n"
|
||
|
|
L" the operation is to be performed\n"
|
||
|
|
L"\n"
|
||
|
|
L" mb-at-start: The number of MB to zero-out at\n"
|
||
|
|
L" the start of the disk. Default is 1\n"
|
||
|
|
L"\n"
|
||
|
|
L" mb-at-end: The number of MB to zero-out at\n"
|
||
|
|
L" the end of the disk. Default is 4\n"
|
||
|
|
L"\n",
|
||
|
|
L" /s: Set the signature of disk\n"
|
||
|
|
L"\n"
|
||
|
|
L" new-signature: Value to set the disk signature to.\n"
|
||
|
|
L" Specify 0 to use a randomly generated\n"
|
||
|
|
L" value\n"
|
||
|
|
L"\n",
|
||
|
|
szArgV0,
|
||
|
|
szArgV0
|
||
|
|
);
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
int __cdecl
|
||
|
|
wmain(
|
||
|
|
int argc,
|
||
|
|
WCHAR *argv[],
|
||
|
|
WCHAR *envp[]
|
||
|
|
)
|
||
|
|
|
||
|
|
/*++
|
||
|
|
|
||
|
|
Routine Description:
|
||
|
|
|
||
|
|
Entry point to wipedisk.exe.
|
||
|
|
|
||
|
|
Arguments:
|
||
|
|
|
||
|
|
argc - Number of command-line parameters used to invoke the app
|
||
|
|
|
||
|
|
argv - The command-line parameters as an array of strings.
|
||
|
|
argv[1] (required) is expected to be the disk number
|
||
|
|
argv[2] (optional) is the initial MB to erase, default 1
|
||
|
|
argv[3] (optional) is the last MB to erase, default 4
|
||
|
|
|
||
|
|
envp - The process environment block, not currently used
|
||
|
|
|
||
|
|
Return Values:
|
||
|
|
|
||
|
|
If the function succeeds, the exit code is zero.
|
||
|
|
|
||
|
|
If the function fails, the exit code is a win-32 error code.
|
||
|
|
|
||
|
|
--*/
|
||
|
|
|
||
|
|
{
|
||
|
|
BOOL bResult = TRUE,
|
||
|
|
bSetSignature = FALSE;
|
||
|
|
|
||
|
|
ULONG ulDiskNumber = 0,
|
||
|
|
ulInitialMB = 1,
|
||
|
|
ulFinalMB = 4;
|
||
|
|
|
||
|
|
DWORD dwNewSignature = 0L;
|
||
|
|
|
||
|
|
int shift = 0;
|
||
|
|
|
||
|
|
SetLastError(ERROR_CAN_NOT_COMPLETE); // for unexpected failures
|
||
|
|
|
||
|
|
if (argc >= 2) {
|
||
|
|
if ((L'-' == argv[1][0]) || (L'/' == argv[1][0])) {
|
||
|
|
//
|
||
|
|
// Parse the options
|
||
|
|
//
|
||
|
|
|
||
|
|
switch (argv[1][1]) {
|
||
|
|
case L'f':
|
||
|
|
case L'F': {
|
||
|
|
|
||
|
|
g_bPrompt = FALSE;
|
||
|
|
shift = 1; // account for /f
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
case L's':
|
||
|
|
case L'S': {
|
||
|
|
|
||
|
|
bSetSignature = TRUE;
|
||
|
|
shift = 2; // account for /s <New Signature>
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if (argc >= shift + 2) {
|
||
|
|
swscanf(argv[shift + 1], L"%lu", &ulDiskNumber);
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
//
|
||
|
|
// We need at least one argument--the disk number
|
||
|
|
//
|
||
|
|
pPrintUsage(argv[0]);
|
||
|
|
return ERROR_INVALID_PARAMETER;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (bSetSignature) {
|
||
|
|
|
||
|
|
//
|
||
|
|
// Set the signature of the disk to a new value
|
||
|
|
//
|
||
|
|
swscanf(argv[shift], L"%lu", &dwNewSignature);
|
||
|
|
bResult = pSetSignature(ulDiskNumber, dwNewSignature);
|
||
|
|
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
//
|
||
|
|
// Wipe the disk. Get the amount to zero-out at the start
|
||
|
|
// and end of disk
|
||
|
|
//
|
||
|
|
if (argc >= shift + 3) {
|
||
|
|
swscanf(argv[shift + 2], L"%lu", &ulInitialMB);
|
||
|
|
|
||
|
|
if (argc >= shift + 4) {
|
||
|
|
swscanf(argv[shift + 3], L"%lu", &ulFinalMB);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
bResult = pWipeDisk(ulDiskNumber, ulInitialMB, ulFinalMB);
|
||
|
|
}
|
||
|
|
|
||
|
|
if (bResult) {
|
||
|
|
wprintf(L"Done.\n");
|
||
|
|
}
|
||
|
|
|
||
|
|
return (bResult ? 0 : GetLastError());
|
||
|
|
}
|