ntoskrnl/io/page.c

   1 /* $Id$
   2  *
   3  * COPYRIGHT:       See COPYING in the top level directory
   4  * PROJECT:         ReactOS kernel
   5  * FILE:            ntoskrnl/io/page.c
   6  * PURPOSE:
   7  * PROGRAMMER:
   8  * UPDATE HISTORY:
   9  *
  10  */
  11
  12 /* INCLUDES *****************************************************************/
  13
  14 #include <ddk/ntddk.h>
  15 #include <internal/io.h>
  16
  17 #define NDEBUG
  18 #include <internal/debug.h>
  19
  20 /* FUNCTIONS *****************************************************************/
  21
  22 #ifndef LIBCAPTIVE
  23
  24 NTSTATUS STDCALL
  25 IoPageWrite(PFILE_OBJECT FileObject,
  26             PMDL Mdl,
  27             PLARGE_INTEGER Offset,
  28             PKEVENT Event,
  29             PIO_STATUS_BLOCK StatusBlock)
  30 {
  31    PIRP Irp;
  32    PIO_STACK_LOCATION StackPtr;
  33    NTSTATUS Status;
  34
  35    DPRINT("IoPageWrite(FileObject %x, Mdl %x)\n",
  36           FileObject, Mdl);
  37
  38    Irp = IoBuildSynchronousFsdRequestWithMdl(IRP_MJ_WRITE,
  39                                              FileObject->DeviceObject,
  40                                              Mdl,
  41                                              Offset,
  42                                              Event,
  43                                              StatusBlock,
  44                                              TRUE);
  45    if (Irp == NULL)
  46    {
  47       return (STATUS_INSUFFICIENT_RESOURCES);
  48    }
  49    Irp->Flags = IRP_NOCACHE|IRP_PAGING_IO;
  50    StackPtr = IoGetNextIrpStackLocation(Irp);
  51    StackPtr->FileObject = FileObject;
  52    DPRINT("Before IoCallDriver\n");
  53    Status = IofCallDriver(FileObject->DeviceObject,Irp);
  54    DPRINT("Status %d STATUS_PENDING %d\n",Status,STATUS_PENDING);
  55    return(Status);
  56 }
  57
  58 #endif /* LIBCAPTIVE */
  59
  60 NTSTATUS STDCALL
  61 IoPageRead(PFILE_OBJECT FileObject,
  62            PMDL Mdl,
  63            PLARGE_INTEGER Offset,
  64            PKEVENT Event,
  65            PIO_STATUS_BLOCK StatusBlock)
  66 {
  67    PIRP Irp;
  68    PIO_STACK_LOCATION StackPtr;
  69    NTSTATUS Status;
  70
  71    DPRINT("IoPageRead(FileObject %x, Mdl %x)\n",
  72           FileObject, Mdl);
  73
  74    Irp = IoBuildSynchronousFsdRequestWithMdl(IRP_MJ_READ,
  75                                              FileObject->DeviceObject,
  76                                              Mdl,
  77                                              Offset,
  78                                              Event,
  79                                              StatusBlock,
  80                                              TRUE);
  81    if (Irp == NULL)
  82    {
  83       return (STATUS_INSUFFICIENT_RESOURCES);
  84    }
  85    Irp->Flags = IRP_NOCACHE
  86 #ifndef LIBCAPTIVE
  87          |IRP_PAGING_IO;
  88 #else /* !LIBCAPTIVE */
  89 /* IRP_SYNCHRONOUS_PAGING_IO: We need to prevent STATUS_PENDING
  90  * IRP_PAGING_IO: We need to pass check in W32 filesystem as we are FO_CLEANUP_COMPLETE (why?)
  91  */
  92          |IRP_PAGING_IO|IRP_SYNCHRONOUS_PAGING_IO;
  93 #endif /* !LIBCAPTIVE */
  94    StackPtr = IoGetNextIrpStackLocation(Irp);
  95    StackPtr->FileObject = FileObject;
  96    DPRINT("Before IoCallDriver\n");
  97    Status = IofCallDriver(FileObject->DeviceObject, Irp);
  98    DPRINT("Status %d STATUS_PENDING %d\n",Status,STATUS_PENDING);
  99
 100    return(Status);
 101 }
 102
 103 NTSTATUS STDCALL
 104 IoSynchronousPageWrite (PFILE_OBJECT FileObject,
 105                         PMDL Mdl,
 106                         PLARGE_INTEGER Offset,
 107                         PKEVENT Event,
 108                         PIO_STATUS_BLOCK StatusBlock)
 109 {
 110    PIRP Irp;
 111    PIO_STACK_LOCATION StackPtr;
 112    NTSTATUS Status;
 113
 114    DPRINT("IoSynchronousPageWrite(FileObject %x, Mdl %x, StatusBlock %x)\n",
 115           FileObject, Mdl, StatusBlock);
 116
 117    Irp = IoBuildSynchronousFsdRequestWithMdl(IRP_MJ_WRITE,
 118                                              FileObject->DeviceObject,
 119                                              Mdl,
 120                                              Offset,
 121                                              Event,
 122                                              StatusBlock,
 123                                              TRUE);
 124    if (Irp == NULL)
 125    {
 126       return (STATUS_INSUFFICIENT_RESOURCES);
 127    }
 128    Irp->Flags = IRP_NOCACHE|IRP_PAGING_IO|IRP_SYNCHRONOUS_PAGING_IO;
 129    StackPtr = IoGetNextIrpStackLocation(Irp);
 130    StackPtr->FileObject = FileObject;
 131    DPRINT("Before IoCallDriver\n");
 132    Status = IofCallDriver(FileObject->DeviceObject,Irp);
 133    DPRINT("Status %d STATUS_PENDING %d\n",Status,STATUS_PENDING);
 134    return(Status);
 135 }
 136
 137 /* EOF */