drivers/fs/ntfs/blockdev.c

   1 /*
   2  *  ReactOS kernel
   3  *  Copyright (C) 2002 ReactOS Team
   4  *
   5  *  This program is free software; you can redistribute it and/or modify
   6  *  it under the terms of the GNU General Public License as published by
   7  *  the Free Software Foundation; either version 2 of the License, or
   8  *  (at your option) any later version.
   9  *
  10  *  This program is distributed in the hope that it will be useful,
  11  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  *  GNU General Public License for more details.
  14  *
  15  *  You should have received a copy of the GNU General Public License
  16  *  along with this program; if not, write to the Free Software
  17  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  18  */
  19 /* $Id$
  20  *
  21  * COPYRIGHT:        See COPYING in the top level directory
  22  * PROJECT:          ReactOS kernel
  23  * FILE:             services/fs/ntfs/blockdev.c
  24  * PURPOSE:          NTFS filesystem driver
  25  * PROGRAMMER:       Eric Kohl
  26  */
  27
  28 /* INCLUDES *****************************************************************/
  29
  30 #include <ddk/ntddk.h>
  31
  32 #define NDEBUG
  33 #include <debug.h>
  34
  35 #include "ntfs.h"
  36
  37
  38 /* FUNCTIONS ****************************************************************/
  39
  40 NTSTATUS
  41 NtfsReadSectors(IN PDEVICE_OBJECT DeviceObject,
  42                 IN ULONG DiskSector,
  43                 IN ULONG SectorCount,
  44                 IN ULONG SectorSize,
  45                 IN OUT PUCHAR Buffer)
  46 {
  47   IO_STATUS_BLOCK IoStatus;
  48   LARGE_INTEGER Offset;
  49   ULONG BlockSize;
  50   KEVENT Event;
  51   PIRP Irp;
  52   NTSTATUS Status;
  53
  54   KeInitializeEvent(&Event,
  55                     NotificationEvent,
  56                     FALSE);
  57
  58   Offset.QuadPart = (LONGLONG)DiskSector * (LONGLONG)SectorSize;
  59   BlockSize = SectorCount * SectorSize;
  60
  61   DPRINT("NtfsReadSectors(DeviceObject %x, DiskSector %d, Buffer %x)\n",
  62          DeviceObject, DiskSector, Buffer);
  63   DPRINT("Offset %I64x BlockSize %ld\n",
  64          Offset.QuadPart,
  65          BlockSize);
  66
  67   DPRINT("Building synchronous FSD Request...\n");
  68   Irp = IoBuildSynchronousFsdRequest(IRP_MJ_READ,
  69                                      DeviceObject,
  70                                      Buffer,
  71                                      BlockSize,
  72                                      &Offset,
  73                                      &Event,
  74                                      &IoStatus);
  75   if (Irp == NULL)
  76     {
  77       DPRINT("IoBuildSynchronousFsdRequest failed\n");
  78       return(STATUS_INSUFFICIENT_RESOURCES);
  79     }
  80
  81   DPRINT("Calling IO Driver... with irp %x\n", Irp);
  82   Status = IoCallDriver(DeviceObject, Irp);
  83
  84   DPRINT("Waiting for IO Operation for %x\n", Irp);
  85   if (Status == STATUS_PENDING)
  86     {
  87       DPRINT("Operation pending\n");
  88       KeWaitForSingleObject(&Event, Suspended, KernelMode, FALSE, NULL);
  89       DPRINT("Getting IO Status... for %x\n", Irp);
  90       Status = IoStatus.Status;
  91     }
  92
  93   if (!NT_SUCCESS(Status))
  94     {
  95       if (Status == STATUS_VERIFY_REQUIRED)
  96         {
  97           PDEVICE_OBJECT DeviceToVerify;
  98           NTSTATUS NewStatus;
  99
 100           DPRINT1("STATUS_VERIFY_REQUIRED\n");
 101           DeviceToVerify = IoGetDeviceToVerify(PsGetCurrentThread());
 102           IoSetDeviceToVerify(PsGetCurrentThread(), NULL);
 103
 104           NewStatus = IoVerifyVolume(DeviceToVerify, FALSE);
 105           DPRINT1("IoVerifyVolume() retuned (Status %lx)\n", NewStatus);
 106         }
 107
 108       DPRINT("NtfsReadSectors() failed (Status %x)\n", Status);
 109       DPRINT("(DeviceObject %x, DiskSector %x, Buffer %x, Offset 0x%I64x)\n",
 110              DeviceObject, DiskSector, Buffer,
 111              Offset.QuadPart);
 112       return(Status);
 113     }
 114
 115   DPRINT("Block request succeeded for %x\n", Irp);
 116
 117   return(STATUS_SUCCESS);
 118 }
 119
 120
 121 NTSTATUS
 122 NtfsReadRawSectors(IN PDEVICE_OBJECT DeviceObject,
 123                    IN ULONG DiskSector,
 124                    IN ULONG SectorCount,
 125                    IN ULONG SectorSize,
 126                    IN OUT PUCHAR Buffer)
 127 {
 128   PIO_STACK_LOCATION Stack;
 129   IO_STATUS_BLOCK IoStatus;
 130   LARGE_INTEGER Offset;
 131   ULONG BlockSize;
 132   KEVENT Event;
 133   PIRP Irp;
 134   NTSTATUS Status;
 135
 136   KeInitializeEvent(&Event,
 137                     NotificationEvent,
 138                     FALSE);
 139
 140   Offset.QuadPart = (LONGLONG)DiskSector * (LONGLONG)SectorSize;
 141   BlockSize = SectorCount * SectorSize;
 142
 143   DPRINT("NtfsReadSectors(DeviceObject %x, DiskSector %d, Buffer %x)\n",
 144          DeviceObject, DiskSector, Buffer);
 145   DPRINT("Offset %I64x BlockSize %ld\n",
 146          Offset.QuadPart,
 147          BlockSize);
 148
 149   DPRINT("Building synchronous FSD Request...\n");
 150   Irp = IoBuildSynchronousFsdRequest(IRP_MJ_READ,
 151                                      DeviceObject,
 152                                      Buffer,
 153                                      BlockSize,
 154                                      &Offset,
 155                                      &Event,
 156                                      &IoStatus);
 157   if (Irp == NULL)
 158     {
 159       DPRINT("IoBuildSynchronousFsdRequest failed\n");
 160       return(STATUS_INSUFFICIENT_RESOURCES);
 161     }
 162
 163 //  Stack = IoGetCurrentIrpStackLocation(Irp);
 164 //  Stack->Flags |= SL_OVERRIDE_VERIFY_VOLUME;
 165
 166   DPRINT("Calling IO Driver... with irp %x\n", Irp);
 167   Status = IoCallDriver(DeviceObject, Irp);
 168
 169   DPRINT("Waiting for IO Operation for %x\n", Irp);
 170   if (Status == STATUS_PENDING)
 171     {
 172       DPRINT("Operation pending\n");
 173       KeWaitForSingleObject(&Event, Suspended, KernelMode, FALSE, NULL);
 174       DPRINT("Getting IO Status... for %x\n", Irp);
 175       Status = IoStatus.Status;
 176     }
 177
 178   if (!NT_SUCCESS(Status))
 179     {
 180       DPRINT("NtfsReadSectors() failed (Status %x)\n", Status);
 181       DPRINT("(DeviceObject %x, DiskSector %x, Buffer %x, Offset 0x%I64x)\n",
 182              DeviceObject, DiskSector, Buffer,
 183              Offset.QuadPart);
 184       return(Status);
 185     }
 186
 187   DPRINT("Block request succeeded for %x\n", Irp);
 188
 189   return(STATUS_SUCCESS);
 190 }
 191
 192
 193 NTSTATUS
 194 NtfsDeviceIoControl(IN PDEVICE_OBJECT DeviceObject,
 195                     IN ULONG ControlCode,
 196                     IN PVOID InputBuffer,
 197                     IN ULONG InputBufferSize,
 198                     IN OUT PVOID OutputBuffer,
 199                     IN OUT PULONG OutputBufferSize)
 200 {
 201   ULONG BufferSize = 0;
 202   PKEVENT Event;
 203   PIRP Irp;
 204   IO_STATUS_BLOCK IoStatus;
 205   NTSTATUS Status;
 206
 207   if (OutputBufferSize != NULL)
 208     {
 209       BufferSize = *OutputBufferSize;
 210     }
 211
 212   Event = ExAllocatePool(NonPagedPool, sizeof(KEVENT));
 213   if (Event == NULL)
 214     {
 215       return(STATUS_INSUFFICIENT_RESOURCES);
 216     }
 217
 218   KeInitializeEvent(Event, NotificationEvent, FALSE);
 219
 220   DPRINT("Building device I/O control request ...\n");
 221   Irp = IoBuildDeviceIoControlRequest(ControlCode,
 222                                       DeviceObject,
 223                                       InputBuffer,
 224                                       InputBufferSize,
 225                                       OutputBuffer,
 226                                       BufferSize,
 227                                       FALSE,
 228                                       Event,
 229                                       &IoStatus);
 230   if (Irp == NULL)
 231     {
 232       DPRINT("IoBuildDeviceIoControlRequest() failed\n");
 233       ExFreePool(Event);
 234       return(STATUS_INSUFFICIENT_RESOURCES);
 235     }
 236
 237   DPRINT("Calling IO Driver... with irp %x\n", Irp);
 238   Status = IoCallDriver(DeviceObject, Irp);
 239   if (Status == STATUS_PENDING)
 240     {
 241       KeWaitForSingleObject(Event, Suspended, KernelMode, FALSE, NULL);
 242       Status = IoStatus.Status;
 243     }
 244
 245   if (OutputBufferSize)
 246     {
 247       *OutputBufferSize = BufferSize;
 248     }
 249
 250   ExFreePool(Event);
 251
 252   return(Status);
 253 }
 254
 255 /* EOF */