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/*++
Copyright (c) Microsoft Corporation. All rights reserved.
THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY
KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A PARTICULAR
PURPOSE.
Module Name:
install.c
Abstract:
Win32 routines to dynamically load and unload a Windows NT kernel-mode
driver using the Service Control Manager APIs.
Environment:
User mode only
--*/
#include <windows.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <strsafe.h>
#include "public.h"
BOOLEAN
InstallDriver(
_In_ SC_HANDLE SchSCManager,
_In_ LPCTSTR DriverName,
_In_ LPCTSTR ServiceExe
);
BOOLEAN
RemoveDriver(
_In_ SC_HANDLE SchSCManager,
_In_ LPCTSTR DriverName
);
BOOLEAN
StartDriver(
_In_ SC_HANDLE SchSCManager,
_In_ LPCTSTR DriverName
);
BOOLEAN
StopDriver(
_In_ SC_HANDLE SchSCManager,
_In_ LPCTSTR DriverName
);
BOOLEAN
InstallDriver(
_In_ SC_HANDLE SchSCManager,
_In_ LPCTSTR DriverName,
_In_ LPCTSTR ServiceExe
)
/*++
Routine Description:
Arguments:
Return Value:
--*/
{
SC_HANDLE schService;
DWORD err;
//
// NOTE: This creates an entry for a standalone driver. If this
// is modified for use with a driver that requires a Tag,
// Group, and/or Dependencies, it may be necessary to
// query the registry for existing driver information
// (in order to determine a unique Tag, etc.).
//
//
// Create a new a service object.
//
schService = CreateService(SchSCManager, // handle of service control manager database
DriverName, // address of name of service to start
DriverName, // address of display name
SERVICE_ALL_ACCESS, // type of access to service
SERVICE_KERNEL_DRIVER, // type of service
SERVICE_DEMAND_START, // when to start service
SERVICE_ERROR_NORMAL, // severity if service fails to start
ServiceExe, // address of name of binary file
NULL, // service does not belong to a group
NULL, // no tag requested
NULL, // no dependency names
NULL, // use LocalSystem account
NULL // no password for service account
);
if (schService == NULL) {
err = GetLastError();
if (err == ERROR_SERVICE_EXISTS) {
//
// Ignore this error.
//
return TRUE;
} else if (err == ERROR_SERVICE_MARKED_FOR_DELETE) {
//
// Previous instance of the service is not fully deleted so sleep
// and try again.
//
printf("Previous instance of the service is not fully deleted. Try again...\n");
return FALSE;
}
else {
printf("CreateService failed! Error = %d \n", err );
//
// Indicate an error.
//
return FALSE;
}
}
//
// Close the service object.
//
if (schService) {
CloseServiceHandle(schService);
}
//
// Indicate success.
//
return TRUE;
} // InstallDriver
BOOLEAN
ManageDriver(
_In_ LPCTSTR DriverName,
_In_ LPCTSTR ServiceName,
_In_ USHORT Function
)
{
SC_HANDLE schSCManager;
BOOLEAN rCode = TRUE;
//
// Insure (somewhat) that the driver and service names are valid.
//
if (!DriverName || !ServiceName) {
printf("Invalid Driver or Service provided to ManageDriver() \n");
return FALSE;
}
//
// Connect to the Service Control Manager and open the Services database.
//
schSCManager = OpenSCManager(NULL, // local machine
NULL, // local database
SC_MANAGER_ALL_ACCESS // access required
);
if (!schSCManager) {
printf("Open SC Manager failed! Error = %d \n", GetLastError());
return FALSE;
}
//
// Do the requested function.
//
switch( Function ) {
case DRIVER_FUNC_INSTALL:
//
// Install the driver service.
//
if (InstallDriver(schSCManager,
DriverName,
ServiceName
)) {
//
// Start the driver service (i.e. start the driver).
//
rCode = StartDriver(schSCManager,
DriverName
);
} else {
//
// Indicate an error.
//
rCode = FALSE;
}
break;
case DRIVER_FUNC_REMOVE:
//
// Stop the driver.
//
StopDriver(schSCManager,
DriverName
);
//
// Remove the driver service.
//
RemoveDriver(schSCManager,
DriverName
);
//
// Ignore all errors.
//
rCode = TRUE;
break;
default:
printf("Unknown ManageDriver() function. \n");
rCode = FALSE;
break;
}
//
// Close handle to service control manager.
//
if (schSCManager) {
CloseServiceHandle(schSCManager);
}
return rCode;
} // ManageDriver
BOOLEAN
RemoveDriver(
_In_ SC_HANDLE SchSCManager,
_In_ LPCTSTR DriverName
)
{
SC_HANDLE schService;
BOOLEAN rCode;
//
// Open the handle to the existing service.
//
schService = OpenService(SchSCManager,
DriverName,
SERVICE_ALL_ACCESS
);
if (schService == NULL) {
printf("OpenService failed! Error = %d \n", GetLastError());
//
// Indicate error.
//
return FALSE;
}
//
// Mark the service for deletion from the service control manager database.
//
if (DeleteService(schService)) {
//
// Indicate success.
//
rCode = TRUE;
} else {
printf("DeleteService failed! Error = %d \n", GetLastError());
//
// Indicate failure. Fall through to properly close the service handle.
//
rCode = FALSE;
}
//
// Close the service object.
//
if (schService) {
CloseServiceHandle(schService);
}
return rCode;
} // RemoveDriver
BOOLEAN
StartDriver(
_In_ SC_HANDLE SchSCManager,
_In_ LPCTSTR DriverName
)
{
SC_HANDLE schService;
DWORD err;
//
// Open the handle to the existing service.
//
schService = OpenService(SchSCManager,
DriverName,
SERVICE_ALL_ACCESS
);
if (schService == NULL) {
printf("OpenService failed! Error = %d \n", GetLastError());
//
// Indicate failure.
//
return FALSE;
}
//
// Start the execution of the service (i.e. start the driver).
//
if (!StartService(schService, // service identifier
0, // number of arguments
NULL // pointer to arguments
)) {
err = GetLastError();
if (err == ERROR_SERVICE_ALREADY_RUNNING) {
//
// Ignore this error.
//
return TRUE;
} else {
printf("StartService failure! Error = %d \n", err );
//
// Indicate failure. Fall through to properly close the service handle.
//
return FALSE;
}
}
//
// Close the service object.
//
if (schService) {
CloseServiceHandle(schService);
}
return TRUE;
} // StartDriver
BOOLEAN
StopDriver(
_In_ SC_HANDLE SchSCManager,
_In_ LPCTSTR DriverName
)
{
BOOLEAN rCode = TRUE;
SC_HANDLE schService;
SERVICE_STATUS serviceStatus;
//
// Open the handle to the existing service.
//
schService = OpenService(SchSCManager,
DriverName,
SERVICE_ALL_ACCESS
);
if (schService == NULL) {
printf("OpenService failed! Error = %d \n", GetLastError());
return FALSE;
}
//
// Request that the service stop.
//
if (ControlService(schService,
SERVICE_CONTROL_STOP,
&serviceStatus
)) {
//
// Indicate success.
//
rCode = TRUE;
} else {
printf("ControlService failed! Error = %d \n", GetLastError() );
//
// Indicate failure. Fall through to properly close the service handle.
//
rCode = FALSE;
}
//
// Close the service object.
//
if (schService) {
CloseServiceHandle (schService);
}
return rCode;
} // StopDriver
BOOLEAN
SetupDriverName(
_Inout_updates_bytes_all_(BufferLength) PCHAR DriverLocation,
_In_ ULONG BufferLength
)
{
HANDLE fileHandle;
DWORD driverLocLen = 0;
//
// Get the current directory.
//
driverLocLen = GetCurrentDirectory(BufferLength,
DriverLocation
);
if (driverLocLen == 0) {
printf("GetCurrentDirectory failed! Error = %d \n", GetLastError());
return FALSE;
}
//
// Setup path name to driver file.
//
if (FAILED( StringCbCat(DriverLocation, BufferLength, "\\"DRIVER_NAME".sys") )) {
return FALSE;
}
//
// Insure driver file is in the specified directory.
//
if ((fileHandle = CreateFile(DriverLocation,
GENERIC_READ,
0,
NULL,
OPEN_EXISTING,
FILE_ATTRIBUTE_NORMAL,
NULL
)) == INVALID_HANDLE_VALUE) {
printf("%s.sys is not loaded.\n", DRIVER_NAME);
//
// Indicate failure.
//
return FALSE;
}
//
// Close open file handle.
//
if (fileHandle) {
CloseHandle(fileHandle);
}
//
// Indicate success.
//
return TRUE;
} // SetupDriverName
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