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 NTSTATUS STDCALL
  23 IoPageWrite(PFILE_OBJECT FileObject,
  24             PMDL Mdl,
  25             PLARGE_INTEGER Offset,
  26             PKEVENT Event,
  27             PIO_STATUS_BLOCK StatusBlock)
  28 {
  29    PIRP Irp;
  30    PIO_STACK_LOCATION StackPtr;
  31    NTSTATUS Status;
  32
  33    DPRINT("IoPageWrite(FileObject %x, Mdl %x)\n",
  34           FileObject, Mdl);
  35
  36    Irp = IoBuildSynchronousFsdRequestWithMdl(IRP_MJ_WRITE,
  37                                              FileObject->DeviceObject,
  38                                              Mdl,
  39                                              Offset,
  40                                              Event,
  41                                              StatusBlock,
  42                                              TRUE);
  43    if (Irp == NULL)
  44    {
  45       return (STATUS_INSUFFICIENT_RESOURCES);
  46    }
  47    Irp->Flags = IRP_NOCACHE|IRP_PAGING_IO;
  48    StackPtr = IoGetNextIrpStackLocation(Irp);
  49    StackPtr->FileObject = FileObject;
  50    DPRINT("Before IoCallDriver\n");
  51    Status = IofCallDriver(FileObject->DeviceObject,Irp);
  52    DPRINT("Status %d STATUS_PENDING %d\n",Status,STATUS_PENDING);
  53    return(Status);
  54 }
  55
  56
  57 /*
  58  * @implemented
  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|IRP_PAGING_IO;
  86    StackPtr = IoGetNextIrpStackLocation(Irp);
  87    StackPtr->FileObject = FileObject;
  88    DPRINT("Before IoCallDriver\n");
  89    Status = IofCallDriver(FileObject->DeviceObject, Irp);
  90    DPRINT("Status %d STATUS_PENDING %d\n",Status,STATUS_PENDING);
  91
  92    return(Status);
  93 }
  94
  95
  96 /*
  97  * @implemented
  98  */
  99 NTSTATUS STDCALL
 100 IoSynchronousPageWrite (PFILE_OBJECT FileObject,
 101                         PMDL Mdl,
 102                         PLARGE_INTEGER Offset,
 103                         PKEVENT Event,
 104                         PIO_STATUS_BLOCK StatusBlock)
 105 {
 106    PIRP Irp;
 107    PIO_STACK_LOCATION StackPtr;
 108    NTSTATUS Status;
 109
 110    DPRINT("IoSynchronousPageWrite(FileObject %x, Mdl %x)\n",
 111           FileObject, Mdl);
 112
 113    Irp = IoBuildSynchronousFsdRequestWithMdl(IRP_MJ_WRITE,
 114                                              FileObject->DeviceObject,
 115                                              Mdl,
 116                                              Offset,
 117                                              Event,
 118                                              StatusBlock,
 119                                              TRUE);
 120    if (Irp == NULL)
 121    {
 122       return (STATUS_INSUFFICIENT_RESOURCES);
 123    }
 124    Irp->Flags = IRP_NOCACHE|IRP_PAGING_IO|IRP_SYNCHRONOUS_PAGING_IO;
 125    StackPtr = IoGetNextIrpStackLocation(Irp);
 126    StackPtr->FileObject = FileObject;
 127    DPRINT("Before IoCallDriver\n");
 128    Status = IofCallDriver(FileObject->DeviceObject,Irp);
 129    DPRINT("Status %d STATUS_PENDING %d\n",Status,STATUS_PENDING);
 130    return(Status);
 131 }
 132
 133
 134 /* EOF */