drivers/filesystems/npfs/close.c

   1 /*
   2  * PROJECT:     ReactOS Named Pipe FileSystem
   3  * LICENSE:     BSD - See COPYING.ARM in the top level directory
   4  * FILE:        drivers/filesystems/npfs/close.c
   5  * PURPOSE:     Pipes Closing
   6  * PROGRAMMERS: ReactOS Portable Systems Group
   7  */
   8
   9 /* INCLUDES *******************************************************************/
  10
  11 #include "npfs.h"
  12
  13 // File ID number for NPFS bugchecking support
  14 #define NPFS_BUGCHECK_FILE_ID   (NPFS_BUGCHECK_CLOSE)
  15
  16 /* FUNCTIONS ******************************************************************/
  17
  18 NTSTATUS
  19 NTAPI
  20 NpCommonClose(IN PDEVICE_OBJECT DeviceObject,
  21               IN PIRP Irp)
  22 {
  23     PIO_STACK_LOCATION IoStack;
  24     NODE_TYPE_CODE NodeTypeCode;
  25     LIST_ENTRY DeferredList;
  26     PNP_FCB Fcb;
  27     PNP_CCB Ccb;
  28     ULONG NamedPipeEnd;
  29     PAGED_CODE();
  30
  31     IoStack = IoGetCurrentIrpStackLocation(Irp);
  32     InitializeListHead(&DeferredList);
  33
  34     NpAcquireExclusiveVcb();
  35     NodeTypeCode = NpDecodeFileObject(IoStack->FileObject,
  36                                       (PVOID*)&Fcb,
  37                                       &Ccb,
  38                                       &NamedPipeEnd);
  39     if (NodeTypeCode == NPFS_NTC_ROOT_DCB)
  40     {
  41         --Fcb->CurrentInstances;
  42         NpDeleteCcb(Ccb, &DeferredList);
  43     }
  44     else if (NodeTypeCode == NPFS_NTC_VCB)
  45     {
  46         --NpVcb->ReferenceCount;
  47     }
  48
  49     NpReleaseVcb();
  50     NpCompleteDeferredIrps(&DeferredList);
  51
  52     Irp->IoStatus.Status = STATUS_SUCCESS;
  53     IoCompleteRequest(Irp, IO_NAMED_PIPE_INCREMENT);
  54     return STATUS_SUCCESS;
  55 }
  56
  57 NTSTATUS
  58 NTAPI
  59 NpFsdClose(IN PDEVICE_OBJECT DeviceObject,
  60            IN PIRP Irp)
  61 {
  62     NTSTATUS Status;
  63     PAGED_CODE();
  64
  65     FsRtlEnterFileSystem();
  66
  67     Status = NpCommonClose(DeviceObject, Irp);
  68
  69     FsRtlExitFileSystem();
  70
  71     return Status;
  72 }
  73
  74 /* EOF */