mirror of
https://github.com/reactos/reactos.git
synced 2024-07-01 10:20:03 +00:00
115 lines
3 KiB
C
115 lines
3 KiB
C
/*
|
|
* PROJECT: ReactOS VT100 emulator
|
|
* LICENSE: GPL - See COPYING in the top level directory
|
|
* FILE: drivers/base/green/misc.c
|
|
* PURPOSE: Misceallenous operations
|
|
* PROGRAMMERS: Copyright 2005-2006 Hervé Poussineau (hpoussin@reactos.org)
|
|
*/
|
|
|
|
#include "green.h"
|
|
|
|
#define NDEBUG
|
|
#include <debug.h>
|
|
|
|
NTSTATUS
|
|
GreenDeviceIoControl(
|
|
IN PDEVICE_OBJECT DeviceObject,
|
|
IN ULONG CtlCode,
|
|
IN PVOID InputBuffer OPTIONAL,
|
|
IN ULONG InputBufferSize,
|
|
IN OUT PVOID OutputBuffer OPTIONAL,
|
|
IN OUT PULONG OutputBufferSize)
|
|
{
|
|
KEVENT Event;
|
|
PIRP Irp;
|
|
IO_STATUS_BLOCK IoStatus;
|
|
NTSTATUS Status;
|
|
|
|
KeInitializeEvent (&Event, NotificationEvent, FALSE);
|
|
|
|
Irp = IoBuildDeviceIoControlRequest(CtlCode,
|
|
DeviceObject,
|
|
InputBuffer,
|
|
InputBufferSize,
|
|
OutputBuffer,
|
|
(OutputBufferSize) ? *OutputBufferSize : 0,
|
|
FALSE,
|
|
&Event,
|
|
&IoStatus);
|
|
if (Irp == NULL)
|
|
{
|
|
DPRINT("IoBuildDeviceIoControlRequest() failed\n");
|
|
return STATUS_INSUFFICIENT_RESOURCES;
|
|
}
|
|
|
|
Status = IoCallDriver(DeviceObject, Irp);
|
|
|
|
if (Status == STATUS_PENDING)
|
|
{
|
|
DPRINT("Operation pending\n");
|
|
KeWaitForSingleObject(&Event, Suspended, KernelMode, FALSE, NULL);
|
|
Status = IoStatus.Status;
|
|
}
|
|
|
|
if (OutputBufferSize)
|
|
{
|
|
*OutputBufferSize = IoStatus.Information;
|
|
}
|
|
|
|
return Status;
|
|
}
|
|
|
|
NTSTATUS
|
|
ReadRegistryEntries(
|
|
IN PUNICODE_STRING RegistryPath,
|
|
IN PGREEN_DRIVER_EXTENSION DriverExtension)
|
|
{
|
|
UNICODE_STRING ParametersRegistryKey;
|
|
RTL_QUERY_REGISTRY_TABLE Parameters[4];
|
|
NTSTATUS Status;
|
|
|
|
ULONG DefaultDeviceReported = 0;
|
|
ULONG DefaultSampleRate = 1200;
|
|
|
|
ParametersRegistryKey.Length = 0;
|
|
ParametersRegistryKey.MaximumLength = RegistryPath->Length + sizeof(L"\\Parameters") + sizeof(UNICODE_NULL);
|
|
ParametersRegistryKey.Buffer = ExAllocatePool(PagedPool, ParametersRegistryKey.MaximumLength);
|
|
if (!ParametersRegistryKey.Buffer)
|
|
{
|
|
DPRINT("ExAllocatePool() failed\n");
|
|
return STATUS_INSUFFICIENT_RESOURCES;
|
|
}
|
|
RtlCopyUnicodeString(&ParametersRegistryKey, RegistryPath);
|
|
RtlAppendUnicodeToString(&ParametersRegistryKey, L"\\Parameters");
|
|
ParametersRegistryKey.Buffer[ParametersRegistryKey.Length / sizeof(WCHAR)] = UNICODE_NULL;
|
|
|
|
RtlZeroMemory(Parameters, sizeof(Parameters));
|
|
|
|
Parameters[0].Flags = RTL_QUERY_REGISTRY_DIRECT;
|
|
Parameters[0].Name = L"AttachedDevice";
|
|
Parameters[0].EntryContext = &DriverExtension->AttachedDeviceName;
|
|
|
|
Parameters[1].Flags = RTL_QUERY_REGISTRY_DIRECT | RTL_REGISTRY_OPTIONAL;
|
|
Parameters[1].Name = L"DeviceReported";
|
|
Parameters[1].EntryContext = &DriverExtension->DeviceReported;
|
|
Parameters[1].DefaultType = REG_DWORD;
|
|
Parameters[1].DefaultData = &DefaultDeviceReported;
|
|
Parameters[1].DefaultLength = sizeof(ULONG);
|
|
|
|
Parameters[2].Flags = RTL_QUERY_REGISTRY_DIRECT | RTL_REGISTRY_OPTIONAL;
|
|
Parameters[2].Name = L"SampleRate";
|
|
Parameters[2].EntryContext = &DriverExtension->SampleRate;
|
|
Parameters[2].DefaultType = REG_DWORD;
|
|
Parameters[2].DefaultData = &DefaultSampleRate;
|
|
Parameters[2].DefaultLength = sizeof(ULONG);
|
|
|
|
Status = RtlQueryRegistryValues(
|
|
RTL_REGISTRY_ABSOLUTE,
|
|
ParametersRegistryKey.Buffer,
|
|
Parameters,
|
|
NULL,
|
|
NULL);
|
|
|
|
return Status;
|
|
}
|