驅動程式 - Windows Driver Model (WDM) - 使用範例 - C/C++ (DDK) - Handle IOCTL IRP

參考資訊：
https://wasm.in/
http://four-f.narod.ru/
https://github.com/steward-fu/ddk

main.c

#include <wdm.h>
 
#define DEV_NAME L"\\Device\\MyDriver"
#define SYM_NAME L"\\DosDevices\\MyDriver"

#define IOCTL_TEST CTL_CODE(FILE_DEVICE_UNKNOWN, 0x800, METHOD_BUFFERED, FILE_ANY_ACCESS) 
 
PDEVICE_OBJECT pNextDevice = NULL;
 
NTSTATUS AddDevice(PDRIVER_OBJECT pMyDriver, PDEVICE_OBJECT pPhyDevice)
{
    PDEVICE_OBJECT pMyDevice = NULL;
    UNICODE_STRING usSymbolName = { 0 };
    UNICODE_STRING usDeviceName = { 0 };
 
    RtlInitUnicodeString(&usDeviceName, DEV_NAME);
    IoCreateDevice(pMyDriver, 0, &usDeviceName, FILE_DEVICE_UNKNOWN, 0, FALSE, &pMyDevice);
    RtlInitUnicodeString(&usSymbolName, SYM_NAME);
    IoCreateSymbolicLink(&usSymbolName, &usDeviceName);
    pNextDevice = IoAttachDeviceToDeviceStack(pMyDevice, pPhyDevice);
    pMyDevice->Flags &= ~DO_DEVICE_INITIALIZING;
    pMyDevice->Flags |= DO_BUFFERED_IO;
    return STATUS_SUCCESS;
}
     
void Unload(PDRIVER_OBJECT pMyDriver)
{
}
 
NTSTATUS IrpPnp(PDEVICE_OBJECT pMyDevice, PIRP pIrp)
{
    UNICODE_STRING usSymbolName = { 0 };
    PIO_STACK_LOCATION pStack = IoGetCurrentIrpStackLocation(pIrp);
 
    if (pStack->MinorFunction == IRP_MN_REMOVE_DEVICE) {
        RtlInitUnicodeString(&usSymbolName, SYM_NAME);
        IoDeleteSymbolicLink(&usSymbolName);
        IoDetachDevice(pNextDevice);
        IoDeleteDevice(pMyDevice);
        IoCompleteRequest(pIrp, IO_NO_INCREMENT);
        return STATUS_SUCCESS;
    }
    IoSkipCurrentIrpStackLocation(pIrp);
    return IoCallDriver(pNextDevice, pIrp);
}
 
NTSTATUS IrpIOCTL(PDEVICE_OBJECT pMyDevice, PIRP pIrp)
{
    PIO_STACK_LOCATION pStack = IoGetCurrentIrpStackLocation(pIrp);
 
    switch (pStack->Parameters.DeviceIoControl.IoControlCode) {
    case IOCTL_TEST:
        DbgPrint("IOCTL_TEST");
        break;
    }
    IoCompleteRequest(pIrp, IO_NO_INCREMENT);
    return STATUS_SUCCESS;
}
 
NTSTATUS IrpFile(PDEVICE_OBJECT pMyDevice, PIRP pIrp)
{
    PIO_STACK_LOCATION pStack = IoGetCurrentIrpStackLocation(pIrp);
 
    switch (pStack->MajorFunction) {
    case IRP_MJ_CREATE:
        DbgPrint("IRP_MJ_CREATE");
        break;
    case IRP_MJ_CLOSE:
        DbgPrint("IRP_MJ_CLOSE");
        break;
    }
    IoCompleteRequest(pIrp, IO_NO_INCREMENT);
    return STATUS_SUCCESS;
}
     
NTSTATUS DriverEntry(PDRIVER_OBJECT pMyDriver, PUNICODE_STRING pMyRegistry)
{
    pMyDriver->MajorFunction[IRP_MJ_PNP]            = IrpPnp;
    pMyDriver->MajorFunction[IRP_MJ_CREATE]         = IrpFile;
    pMyDriver->MajorFunction[IRP_MJ_CLOSE]          = IrpFile;
    pMyDriver->MajorFunction[IRP_MJ_DEVICE_CONTROL] = IrpIOCTL;
    pMyDriver->DriverExtension->AddDevice = AddDevice;
    pMyDriver->DriverUnload = Unload;
    return STATUS_SUCCESS;
}

app.c

#include <windows.h>
#include <winioctl.h>
#include <stdio.h>
#include <stdlib.h>
 
#define IOCTL_TEST      CTL_CODE(FILE_DEVICE_UNKNOWN, 0x800, METHOD_BUFFERED,   FILE_ANY_ACCESS)
#define IOCTL_GET_BUF   CTL_CODE(FILE_DEVICE_UNKNOWN, 0x800, METHOD_BUFFERED,   FILE_ANY_ACCESS)
#define IOCTL_SET_BUF   CTL_CODE(FILE_DEVICE_UNKNOWN, 0x801, METHOD_BUFFERED,   FILE_ANY_ACCESS)
#define IOCTL_GET_DIR   CTL_CODE(FILE_DEVICE_UNKNOWN, 0x800, METHOD_OUT_DIRECT, FILE_ANY_ACCESS)
#define IOCTL_SET_DIR   CTL_CODE(FILE_DEVICE_UNKNOWN, 0x801, METHOD_IN_DIRECT,  FILE_ANY_ACCESS)
#define IOCTL_GET_NEI   CTL_CODE(FILE_DEVICE_UNKNOWN, 0x800, METHOD_NEITHER,    FILE_ANY_ACCESS)
#define IOCTL_SET_NEI   CTL_CODE(FILE_DEVICE_UNKNOWN, 0x801, METHOD_NEITHER,    FILE_ANY_ACCESS)

int main(int argc, char **argv)
{
    DWORD dwRet = 0;
    HANDLE hFile = NULL;
    char szBuffer[255] = {"I am error"};
 
    hFile = CreateFile("\\\\.\\MyDriver", GENERIC_READ | GENERIC_WRITE, 0, NULL, OPEN_EXISTING, 0, NULL);

    if (argc > 1) {
        dwRet = strlen(szBuffer);
        printf("SET: %s, %d\n", szBuffer, dwRet);
        if (!strcmp(argv[1], "BUF")) {
            DeviceIoControl(hFile, IOCTL_SET_BUF, szBuffer, dwRet, NULL, 0, &dwRet, NULL);
            
            dwRet = 0;
            memset(szBuffer, 0, sizeof(szBuffer));
            DeviceIoControl(hFile, IOCTL_GET_BUF, NULL, 0, szBuffer, sizeof(szBuffer), &dwRet, NULL);
        }
        else if (!strcmp(argv[1], "DIR")) {
            DeviceIoControl(hFile, IOCTL_SET_DIR, szBuffer, dwRet, NULL, 0, &dwRet, NULL);
            
            dwRet = 0;
            memset(szBuffer, 0, sizeof(szBuffer));
            DeviceIoControl(hFile, IOCTL_GET_DIR, NULL, 0, szBuffer, sizeof(szBuffer), &dwRet, NULL);
        }
        else if (!strcmp(argv[1], "NEI")) {
            DeviceIoControl(hFile, IOCTL_SET_NEI, szBuffer, dwRet, NULL, 0, &dwRet, NULL);
            
            dwRet = 0;
            memset(szBuffer, 0, sizeof(szBuffer));
            DeviceIoControl(hFile, IOCTL_GET_NEI, NULL, 0, szBuffer, sizeof(szBuffer), &dwRet, NULL);
        }
        printf("GET: %s, %d\n", szBuffer, dwRet);
    }
    else {
        DeviceIoControl(hFile, IOCTL_TEST, NULL, 0, NULL, 0, &dwRet, NULL);    
    }
    CloseHandle(hFile);
    return 0;
}

完成