reactos/ntoskrnl/io/page.c

   1 /* $Id: page.c,v 1.18 2002/09/07 15:12:53 chorns Exp $
   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 <ntoskrnl.h>
  15
  16 #define NDEBUG
  17 #include <internal/debug.h>
  18
  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 NTSTATUS STDCALL
  58 IoPageRead(PFILE_OBJECT FileObject,
  59            PMDL Mdl,
  60            PLARGE_INTEGER Offset,
  61            PKEVENT Event,
  62            PIO_STATUS_BLOCK StatusBlock)
  63 {
  64    PIRP Irp;
  65    PIO_STACK_LOCATION StackPtr;
  66    NTSTATUS Status;
  67
  68    DPRINT("IoPageRead(FileObject %x, Mdl %x)\n",
  69           FileObject, Mdl);
  70
  71    Irp = IoBuildSynchronousFsdRequestWithMdl(IRP_MJ_READ,
  72                                              FileObject->DeviceObject,
  73                                              Mdl,
  74                                              Offset,
  75                                              Event,
  76                                              StatusBlock,
  77                                              TRUE);
  78    if (Irp == NULL)
  79    {
  80       return (STATUS_INSUFFICIENT_RESOURCES);
  81    }
  82    Irp->Flags = IRP_NOCACHE|IRP_PAGING_IO;
  83    StackPtr = IoGetNextIrpStackLocation(Irp);
  84    StackPtr->FileObject = FileObject;
  85    DPRINT("Before IoCallDriver\n");
  86    Status = IofCallDriver(FileObject->DeviceObject, Irp);
  87    DPRINT("Status %d STATUS_PENDING %d\n",Status,STATUS_PENDING);
  88
  89    return(Status);
  90 }
  91
  92
  93 NTSTATUS STDCALL
  94 IoSynchronousPageWrite (PFILE_OBJECT FileObject,
  95                         PMDL Mdl,
  96                         PLARGE_INTEGER Offset,
  97                         PKEVENT Event,
  98                         PIO_STATUS_BLOCK StatusBlock)
  99 {
 100    PIRP Irp;
 101    PIO_STACK_LOCATION StackPtr;
 102    NTSTATUS Status;
 103
 104    DPRINT("IoSynchronousPageWrite(FileObject %x, Mdl %x)\n",
 105           FileObject, Mdl);
 106
 107    Irp = IoBuildSynchronousFsdRequestWithMdl(IRP_MJ_WRITE,
 108                                              FileObject->DeviceObject,
 109                                              Mdl,
 110                                              Offset,
 111                                              Event,
 112                                              StatusBlock,
 113                                              TRUE);
 114    if (Irp == NULL)
 115    {
 116       return (STATUS_INSUFFICIENT_RESOURCES);
 117    }
 118    Irp->Flags = IRP_NOCACHE|IRP_PAGING_IO|IRP_SYNCHRONOUS_PAGING_IO;
 119    StackPtr = IoGetNextIrpStackLocation(Irp);
 120    StackPtr->FileObject = FileObject;
 121    DPRINT("Before IoCallDriver\n");
 122    Status = IofCallDriver(FileObject->DeviceObject,Irp);
 123    DPRINT("Status %d STATUS_PENDING %d\n",Status,STATUS_PENDING);
 124    return(Status);
 125 }
 126
 127
 128 /* EOF */