reactos/drivers/filesystems/npfs/npfs.c

   1 /*
   2 * COPYRIGHT:  See COPYING in the top level directory
   3 * PROJECT:    ReactOS kernel
   4 * FILE:       drivers/fs/np/mount.c
   5 * PURPOSE:    Named pipe filesystem
   6 * PROGRAMMER: David Welch <welch@cwcom.net>
   7 */
   8
   9 /* INCLUDES ******************************************************************/
  10
  11 #include "npfs.h"
  12
  13 #define NDEBUG
  14 #include <debug.h>
  15
  16 /* FUNCTIONS *****************************************************************/
  17
  18 NTSTATUS NTAPI
  19 DriverEntry(PDRIVER_OBJECT DriverObject,
  20             PUNICODE_STRING RegistryPath)
  21 {
  22     PNPFS_DEVICE_EXTENSION DeviceExtension;
  23     PDEVICE_OBJECT DeviceObject;
  24     UNICODE_STRING DeviceName;
  25     NTSTATUS Status;
  26
  27     DPRINT("Named Pipe FSD 0.0.2\n");
  28
  29     ASSERT (sizeof(NPFS_CONTEXT) <= FIELD_OFFSET(IRP, Tail.Overlay.DriverContext));
  30     ASSERT (sizeof(NPFS_WAITER_ENTRY) <= FIELD_OFFSET(IRP, Tail.Overlay.DriverContext));
  31
  32     DriverObject->MajorFunction[IRP_MJ_CREATE] = NpfsCreate;
  33     DriverObject->MajorFunction[IRP_MJ_CREATE_NAMED_PIPE] =
  34         NpfsCreateNamedPipe;
  35     DriverObject->MajorFunction[IRP_MJ_CLOSE] = NpfsClose;
  36     DriverObject->MajorFunction[IRP_MJ_READ] = NpfsRead;
  37     DriverObject->MajorFunction[IRP_MJ_WRITE] = NpfsWrite;
  38     DriverObject->MajorFunction[IRP_MJ_QUERY_INFORMATION] =
  39         NpfsQueryInformation;
  40     DriverObject->MajorFunction[IRP_MJ_SET_INFORMATION] =
  41         NpfsSetInformation;
  42     DriverObject->MajorFunction[IRP_MJ_QUERY_VOLUME_INFORMATION] =
  43         NpfsQueryVolumeInformation;
  44     DriverObject->MajorFunction[IRP_MJ_CLEANUP] = NpfsCleanup;
  45     DriverObject->MajorFunction[IRP_MJ_FLUSH_BUFFERS] = NpfsFlushBuffers;
  46     //   DriverObject->MajorFunction[IRP_MJ_DIRECTORY_CONTROL] =
  47     //     NpfsDirectoryControl;
  48     DriverObject->MajorFunction[IRP_MJ_FILE_SYSTEM_CONTROL] =
  49         NpfsFileSystemControl;
  50     //   DriverObject->MajorFunction[IRP_MJ_QUERY_SECURITY] =
  51     //     NpfsQuerySecurity;
  52     //   DriverObject->MajorFunction[IRP_MJ_SET_SECURITY] =
  53     //     NpfsSetSecurity;
  54
  55     DriverObject->DriverUnload = NULL;
  56
  57     RtlInitUnicodeString(&DeviceName, L"\\Device\\NamedPipe");
  58     Status = IoCreateDevice(DriverObject,
  59         sizeof(NPFS_DEVICE_EXTENSION),
  60         &DeviceName,
  61         FILE_DEVICE_NAMED_PIPE,
  62         0,
  63         FALSE,
  64         &DeviceObject);
  65     if (!NT_SUCCESS(Status))
  66     {
  67         DPRINT("Failed to create named pipe device! (Status %x)\n", Status);
  68         return Status;
  69     }
  70
  71     /* initialize the device object */
  72     DeviceObject->Flags |= DO_DIRECT_IO;
  73     DeviceObject->Flags &= ~DO_DEVICE_INITIALIZING;
  74
  75     /* initialize the device extension */
  76     DeviceExtension = DeviceObject->DeviceExtension;
  77     InitializeListHead(&DeviceExtension->PipeListHead);
  78     InitializeListHead(&DeviceExtension->ThreadListHead);
  79     KeInitializeMutex(&DeviceExtension->PipeListLock, 0);
  80     DeviceExtension->EmptyWaiterCount = 0;
  81
  82     /* set the size quotas */
  83     DeviceExtension->MinQuota = PAGE_SIZE;
  84     DeviceExtension->DefaultQuota = 8 * PAGE_SIZE;
  85     DeviceExtension->MaxQuota = 64 * PAGE_SIZE;
  86
  87     return STATUS_SUCCESS;
  88 }
  89
  90 /* EOF */