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deviodrv.cpp
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/*
General License for Open Source projects published by
Olof Lagerkvist - LTR Data.
Copyright (c) Olof Lagerkvist, LTR Data
http://www.ltr-data.se
The above copyright notice shall be included in all copies or
substantial portions of the Software.
Permission is hereby granted, free of charge, to any person
obtaining a copy of this software and associated documentation
files (the "Software"), to deal in the Software without
restriction, including without limitation the rights to use,
copy, modify, merge, publish, distribute, sublicense, and/or
sell copies of the Software, and to permit persons to whom the
Software is furnished to do so, subject to the following
conditions:
As a discretionary option, the above permission notice may be
included in copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
OTHER DEALINGS IN THE SOFTWARE.
*/
#include <wdm.h>
#include <ntdddisk.h>
#include "..\inc\imdisk.h"
#include "..\inc\imdproxy.h"
#include "deviodrv.h"
#pragma code_seg("INIT")
NTSTATUS
DriverEntry(PDRIVER_OBJECT DriverObject, PUNICODE_STRING)
{
PAGED_CODE();
KdPrint(("DevIoDrv loading.\n"));
#if DBG
#if (NTDDI_VERSION >= NTDDI_WS03)
KdRefreshDebuggerNotPresent();
#endif
if (!KD_DEBUGGER_NOT_PRESENT)
DbgBreakPoint();
#endif
InitializeListHead(&FileTable);
DriverObject->DriverUnload = DevIoDrvUnload;
UNICODE_STRING dev_path;
RtlInitUnicodeString(&dev_path, DEVIODRV_DEVICE_NATIVE_NAME);
PDEVICE_OBJECT DeviceObject;
NTSTATUS status = IoCreateDevice(DriverObject, 0, &dev_path, FILE_DEVICE_UNKNOWN, 0, FALSE, &DeviceObject);
if (!NT_SUCCESS(status))
{
DbgPrint("Failed creating device %wZ: %#x\n", &dev_path, status);
return status;
}
UNICODE_STRING symlink_path;
RtlInitUnicodeString(&symlink_path, DEVIODRV_SYMLINK_NATIVE_NAME);
status = IoCreateUnprotectedSymbolicLink(&symlink_path, &dev_path);
if (!NT_SUCCESS(status))
{
IoDeleteDevice(DeviceObject);
DbgPrint("Failed creating symlink %wZ to %wZ: %#x\n", &symlink_path, &dev_path, status);
return status;
}
DeviceObject->Flags |= DO_DIRECT_IO;
DriverObject->MajorFunction[IRP_MJ_CREATE] = DevIoDrvDispatchCreate;
DriverObject->MajorFunction[IRP_MJ_CLOSE] = DevIoDrvDispatchClose;
DriverObject->MajorFunction[IRP_MJ_CLEANUP] = DevIoDrvDispatchCleanup;
DriverObject->MajorFunction[IRP_MJ_READ] = DevIoDrvDispatchReadWrite;
DriverObject->MajorFunction[IRP_MJ_WRITE] = DevIoDrvDispatchReadWrite;
DriverObject->MajorFunction[IRP_MJ_DEVICE_CONTROL] = DevIoDrvDispatchControl;
DriverObject->MajorFunction[IRP_MJ_FILE_SYSTEM_CONTROL] = DevIoDrvDispatchControl;
DriverObject->MajorFunction[IRP_MJ_QUERY_INFORMATION] = DevIoDrvDispatchQueryInformation;
DriverObject->MajorFunction[IRP_MJ_FLUSH_BUFFERS] = DevIoDrvDispatchFlushBuffers;
KdPrint(("DevIoDrv loaded.\n"));
return STATUS_SUCCESS;
}
#pragma code_seg("PAGE")
void
DevIoDrvUnload(PDRIVER_OBJECT DriverObject)
{
PAGED_CODE();
KdPrint(("DevIoDrv unloading.\n"));
UNICODE_STRING symlink_path;
RtlInitUnicodeString(&symlink_path, DEVIODRV_SYMLINK_NATIVE_NAME);
NTSTATUS status = IoDeleteSymbolicLink(&symlink_path);
if (!NT_SUCCESS(status))
{
DbgPrint("Failed removing symlink %wZ: %#x\n", &symlink_path, status);
}
while (DriverObject->DeviceObject != NULL)
{
#pragma warning(suppress: 6001)
IoDeleteDevice(DriverObject->DeviceObject);
}
}