reactos/drivers/serial/serial/create.c

   1 /*
   2  * COPYRIGHT:       See COPYING in the top level directory
   3  * PROJECT:         Serial port driver
   4  * FILE:            drivers/dd/serial/create.c
   5  * PURPOSE:         Serial IRP_MJ_CREATE operations
   6  *
   7  * PROGRAMMERS:     Hervé Poussineau (hpoussin@reactos.org)
   8  */
   9
  10 #include "serial.h"
  11
  12 #include <debug.h>
  13
  14 NTSTATUS NTAPI
  15 SerialCreate(
  16         IN PDEVICE_OBJECT DeviceObject,
  17         IN PIRP Irp)
  18 {
  19         PIO_STACK_LOCATION Stack;
  20         PSERIAL_DEVICE_EXTENSION DeviceExtension;
  21         NTSTATUS Status;
  22
  23         TRACE_(SERIAL, "IRP_MJ_CREATE\n");
  24         Stack = IoGetCurrentIrpStackLocation(Irp);
  25         DeviceExtension = (PSERIAL_DEVICE_EXTENSION)DeviceObject->DeviceExtension;
  26
  27         if (Stack->Parameters.Create.Options & FILE_DIRECTORY_FILE)
  28         {
  29                 INFO_(SERIAL, "Not a directory\n");
  30                 Status = STATUS_NOT_A_DIRECTORY;
  31                 goto ByeBye;
  32         }
  33
  34         if(DeviceExtension->IsOpened)
  35         {
  36                 WARN_(SERIAL, "COM%lu is already opened\n", DeviceExtension->ComPort);
  37                 Status = STATUS_ACCESS_DENIED;
  38                 goto ByeBye;
  39         }
  40
  41         INFO_(SERIAL, "Open COM%lu: successfull\n", DeviceExtension->ComPort);
  42         DeviceExtension->IsOpened = TRUE;
  43         Status = STATUS_SUCCESS;
  44
  45 ByeBye:
  46         Irp->IoStatus.Status = Status;
  47         Irp->IoStatus.Information = 0;
  48         IoCompleteRequest(Irp, IO_NO_INCREMENT);
  49         return Status;
  50 }