create.c

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/*
 * COPYRIGHT:       See COPYING in the top level directory
 * PROJECT:         Serial port driver
 * FILE:            drivers/dd/serial/create.c
 * PURPOSE:         Serial IRP_MJ_CREATE operations
 *
 * PROGRAMMERS:     Hervé Poussineau (hpoussin@reactos.org)
 */
 
#include "serial.h"
 
#include <debug.h>
 
NTSTATUS NTAPI
SerialCreate(
    IN PDEVICE_OBJECT DeviceObject,
    IN PIRP Irp)
{
    PIO_STACK_LOCATION Stack;
    PSERIAL_DEVICE_EXTENSION DeviceExtension;
    NTSTATUS Status;
 
    TRACE_(SERIAL, "IRP_MJ_CREATE\n");
    Stack = IoGetCurrentIrpStackLocation(Irp);
    DeviceExtension = (PSERIAL_DEVICE_EXTENSION)DeviceObject->DeviceExtension;
 
    if (Stack->Parameters.Create.Options & FILE_DIRECTORY_FILE)
    {
        INFO_(SERIAL, "Not a directory\n");
        Status = STATUS_NOT_A_DIRECTORY;
        goto ByeBye;
    }
 
    if(DeviceExtension->IsOpened)
    {
        WARN_(SERIAL, "COM%lu is already opened\n", DeviceExtension->ComPort);
        Status = STATUS_ACCESS_DENIED;
        goto ByeBye;
    }
 
    INFO_(SERIAL, "Open COM%lu: successfull\n", DeviceExtension->ComPort);
    DeviceExtension->IsOpened = TRUE;
    Status = STATUS_SUCCESS;
 
ByeBye:
    Irp->IoStatus.Status = Status;
    Irp->IoStatus.Information = 0;
    IoCompleteRequest(Irp, IO_NO_INCREMENT);
    return Status;
}