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Diffstat (limited to 'km/src/special/nt_path_converter/device.c')
-rw-r--r--km/src/special/nt_path_converter/device.c203
1 files changed, 0 insertions, 203 deletions
diff --git a/km/src/special/nt_path_converter/device.c b/km/src/special/nt_path_converter/device.c
deleted file mode 100644
index a179984..0000000
--- a/km/src/special/nt_path_converter/device.c
+++ /dev/null
@@ -1,203 +0,0 @@
-/*
- * Copyright (c) 2015 Egor Tensin <Egor.Tensin@gmail.com>
- * This file is part of the "Windows 7 drivers" project.
- * For details, see https://github.com/egor-tensin/windows7-drivers.
- * Distributed under the MIT License.
- */
-
-#include "control_codes.h"
-#include "device.h"
-#include "nt2dos.h"
-
-#include <ntddk.h>
-
-static NTSTATUS device_open(DEVICE_OBJECT *device_object, IRP *irp)
-{
- NTSTATUS status = STATUS_SUCCESS;
-
- UNREFERENCED_PARAMETER(device_object);
-
- irp->IoStatus.Status = status;
- irp->IoStatus.Information = 0;
- IoCompleteRequest(irp, IO_NO_INCREMENT);
- return status;
-}
-
-typedef NTSTATUS (*ioctl_handler)(
- void *, unsigned long,
- void *, unsigned long,
- ULONG_PTR *);
-
-static NTSTATUS handle_convert_nt_path(
- void *in_buf,
- unsigned long in_buf_size,
- void *out_buf,
- unsigned long out_buf_size,
- ULONG_PTR *nbwritten)
-{
- UNICODE_STRING uUnresolved, uResolved;
- NTSTATUS status = STATUS_SUCCESS;
-
- DbgPrint("nt_path_converter: unresolved path: %ws\n", (WCHAR *) in_buf);
- DbgPrint("nt_path_converter: unresolved size: %lu\n", in_buf_size);
-
- RtlInitUnicodeString(&uUnresolved, (WCHAR *) in_buf);
- status = nt2dos(&uResolved, &uUnresolved);
-
- if (!NT_SUCCESS(status))
- return status;
-
- *nbwritten = uResolved.Length + sizeof(WCHAR);
-
- DbgPrint("nt_path_converter: resolved path: %wZ\n", &uResolved);
- DbgPrint("nt_path_converter: resolved size: %Iu\n", *nbwritten);
-
- if (out_buf_size < *nbwritten)
- {
- status = STATUS_BUFFER_OVERFLOW;
- goto free_resolved;
- }
-
- RtlFillMemory(out_buf, *nbwritten, L'\0');
- RtlCopyMemory(out_buf, uResolved.Buffer, uResolved.Length);
-
-free_resolved:
- ExFreePool(uResolved.Buffer);
-
- return status;
-}
-
-static NTSTATUS device_ioctl(DEVICE_OBJECT *device_object, IRP *irp)
-{
- IO_STACK_LOCATION *io_stack_loc;
- void* in_buf, *out_buf;
- unsigned long in_buf_size, out_buf_size;
- ioctl_handler handler;
- NTSTATUS status = STATUS_UNSUCCESSFUL;
-
- UNREFERENCED_PARAMETER(device_object);
-
- irp->IoStatus.Status = status;
- irp->IoStatus.Information = 0;
- io_stack_loc = IoGetCurrentIrpStackLocation(irp);
-
- in_buf = out_buf = irp->AssociatedIrp.SystemBuffer;
- in_buf_size = io_stack_loc->Parameters.DeviceIoControl.InputBufferLength;
- out_buf_size = io_stack_loc->Parameters.DeviceIoControl.OutputBufferLength;
-
- switch (io_stack_loc->Parameters.DeviceIoControl.IoControlCode)
- {
- case CONVERT_NT_PATH:
- handler = handle_convert_nt_path;
- break;
-
- default:
- status = irp->IoStatus.Status = STATUS_NOT_SUPPORTED;
- goto complete_request;
- }
-
- status = irp->IoStatus.Status = handler(
- in_buf, in_buf_size,
- out_buf, out_buf_size,
- &irp->IoStatus.Information);
-
-complete_request:
- IoCompleteRequest(irp, IO_NO_INCREMENT);
-
- return status;
-}
-
-typedef struct
-{
- const wchar_t *path;
- const wchar_t *symlink;
-}
-DeviceInfo;
-
-typedef struct
-{
- DEVICE_OBJECT *object;
- UNICODE_STRING path;
- UNICODE_STRING symlink;
-}
-Device;
-
-#define NUMOF_DEVICES 1
-
-static DeviceInfo devices_info[NUMOF_DEVICES] =
-{
- {
- L"\\Device\\nt_path_converter",
- L"\\DosDevices\\nt_path_converter",
- },
-};
-
-static Device devices[NUMOF_DEVICES];
-
-static void destroy_device(int i)
-{
- IoDeleteSymbolicLink(&devices[i].symlink);
- IoDeleteDevice(devices[i].object);
-}
-
-void destroy_devices()
-{
- int i;
- for (i = 0; i < NUMOF_DEVICES; ++i)
- destroy_device(i);
-}
-
-static NTSTATUS set_up_device(DRIVER_OBJECT *driver_object, int i)
-{
- NTSTATUS status = STATUS_SUCCESS;
-
- RtlInitUnicodeString(&devices[i].path, devices_info[i].path);
- RtlInitUnicodeString(&devices[i].symlink, devices_info[i].symlink);
-
- status = IoCreateDevice(
- driver_object,
- 0,
- &devices[i].path,
- FILE_DEVICE_UNKNOWN,
- FILE_DEVICE_SECURE_OPEN,
- FALSE,
- &devices[i].object);
-
- if (!NT_SUCCESS(status))
- return status;
-
- devices[i].object->Flags |= DO_BUFFERED_IO;
- devices[i].object->Flags &= ~DO_DEVICE_INITIALIZING;
-
- if (!NT_SUCCESS(status = IoCreateSymbolicLink(
- &devices[i].symlink, &devices[i].path)))
- goto delete_device;
-
- return status;
-
-delete_device:
- IoDeleteDevice(devices[i].object);
-
- return status;
-}
-
-NTSTATUS set_up_devices(DRIVER_OBJECT *driver_object)
-{
- int i, j;
- NTSTATUS status = STATUS_SUCCESS;
-
- for (i = 0; i < NUMOF_DEVICES; ++i)
- if (!NT_SUCCESS(status = set_up_device(driver_object, i)))
- goto destroy_devices;
-
- driver_object->MajorFunction[IRP_MJ_CREATE] = device_open;
- driver_object->MajorFunction[IRP_MJ_DEVICE_CONTROL] = device_ioctl;
-
- return status;
-
-destroy_devices:
- for (j = 0; j < i; ++j)
- destroy_device(j);
-
- return status;
-}