aboutsummaryrefslogtreecommitdiffstatshomepage
path: root/km/src/simple
diff options
context:
space:
mode:
Diffstat (limited to 'km/src/simple')
-rw-r--r--km/src/simple/device.c220
-rw-r--r--km/src/simple/device.h13
-rw-r--r--km/src/simple/main.c29
-rw-r--r--km/src/simple/makefile1
-rw-r--r--km/src/simple/sources3
5 files changed, 266 insertions, 0 deletions
diff --git a/km/src/simple/device.c b/km/src/simple/device.c
new file mode 100644
index 0000000..859ba67
--- /dev/null
+++ b/km/src/simple/device.c
@@ -0,0 +1,220 @@
+/*
+ * 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 "device.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_say_hello(
+ void *in_buf,
+ unsigned long in_buf_size,
+ void *out_buf,
+ unsigned long out_buf_size,
+ ULONG_PTR *nbwritten)
+{
+ UNREFERENCED_PARAMETER(in_buf);
+ UNREFERENCED_PARAMETER(in_buf_size);
+ UNREFERENCED_PARAMETER(out_buf);
+ UNREFERENCED_PARAMETER(out_buf_size);
+ UNREFERENCED_PARAMETER(nbwritten);
+
+ DbgPrint("Hello, world!\n");
+ return STATUS_SUCCESS;
+}
+
+static unsigned int i = 42;
+
+static NTSTATUS handle_exchange_ints(
+ void *in_buf,
+ unsigned long in_buf_size,
+ void *out_buf,
+ unsigned long out_buf_size,
+ ULONG_PTR *nbwritten)
+{
+ unsigned int temp_i;
+
+ if (in_buf_size != sizeof(temp_i))
+ return STATUS_INVALID_BUFFER_SIZE;
+
+ RtlCopyMemory(&temp_i, in_buf, in_buf_size);
+ DbgPrint("%08x\n", temp_i);
+
+ if (out_buf_size < sizeof(i))
+ return STATUS_BUFFER_TOO_SMALL;
+
+ RtlCopyMemory(out_buf, &i, sizeof(i));
+ *nbwritten += sizeof(i);
+ i = temp_i;
+ return STATUS_SUCCESS;
+}
+
+#define SAY_HELLO CTL_CODE(0x8000, 0x800, METHOD_BUFFERED, FILE_ANY_ACCESS)
+#define EXCHANGE_INTS CTL_CODE(0x8001, 0x800, METHOD_BUFFERED, FILE_ANY_ACCESS)
+
+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 SAY_HELLO:
+ handler = handle_say_hello;
+ break;
+
+ case EXCHANGE_INTS:
+ handler = handle_exchange_ints;
+ 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 2
+
+static DeviceInfo devices_info[NUMOF_DEVICES] =
+{
+ {
+ L"\\Device\\simple_device1",
+ L"\\DosDevices\\simple_device1",
+ },
+ {
+ L"\\Device\\simple_device2",
+ L"\\DosDevices\\simple_device2",
+ },
+};
+
+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;
+
+ DbgPrint("Setting up device...\n");
+ DbgPrint("\tPath: %ws\n", devices_info[i].path);
+ DbgPrint("\tSymlink: %ws\n", devices_info[i].symlink);
+
+ 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;
+}
diff --git a/km/src/simple/device.h b/km/src/simple/device.h
new file mode 100644
index 0000000..4f117e9
--- /dev/null
+++ b/km/src/simple/device.h
@@ -0,0 +1,13 @@
+/*
+ * 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.
+ */
+
+#pragma once
+
+#include <ntddk.h>
+
+NTSTATUS set_up_devices(DRIVER_OBJECT *);
+void destroy_devices();
diff --git a/km/src/simple/main.c b/km/src/simple/main.c
new file mode 100644
index 0000000..5148727
--- /dev/null
+++ b/km/src/simple/main.c
@@ -0,0 +1,29 @@
+/*
+ * 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 "device.h"
+
+#include <ntddk.h>
+
+static void on_driver_unload(DRIVER_OBJECT *driver_object)
+{
+ UNREFERENCED_PARAMETER(driver_object);
+
+ DbgPrint("simple: unloading...\n");
+ destroy_devices();
+}
+
+NTSTATUS DriverEntry(
+ DRIVER_OBJECT *driver_object,
+ UNICODE_STRING *registry_path)
+{
+ UNREFERENCED_PARAMETER(registry_path);
+
+ DbgPrint("simple: loading...\n");
+ driver_object->DriverUnload = on_driver_unload;
+ return set_up_devices(driver_object);
+}
diff --git a/km/src/simple/makefile b/km/src/simple/makefile
new file mode 100644
index 0000000..5acbbd2
--- /dev/null
+++ b/km/src/simple/makefile
@@ -0,0 +1 @@
+!INCLUDE $(NTMAKEENV)\makefile.def
diff --git a/km/src/simple/sources b/km/src/simple/sources
new file mode 100644
index 0000000..1a5ce00
--- /dev/null
+++ b/km/src/simple/sources
@@ -0,0 +1,3 @@
+TARGETTYPE = DRIVER
+TARGETNAME = simple
+SOURCES = device.c main.c
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-24 12:58:02 +0000