drivers/fs/ntfs/finfo.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/dirctl.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 static NTSTATUS
  41 NtfsGetStandardInformation(PFCB Fcb,
  42                            PDEVICE_OBJECT DeviceObject,
  43                            PFILE_STANDARD_INFORMATION StandardInfo,
  44                            PULONG BufferLength)
  45 /*
  46  * FUNCTION: Retrieve the standard file information
  47  */
  48 {
  49   DPRINT("NtfsGetStandardInformation() called\n");
  50
  51   if (*BufferLength < sizeof(FILE_STANDARD_INFORMATION))
  52     return(STATUS_BUFFER_OVERFLOW);
  53
  54   /* PRECONDITION */
  55   assert(StandardInfo != NULL);
  56   assert(Fcb != NULL);
  57
  58   RtlZeroMemory(StandardInfo,
  59                 sizeof(FILE_STANDARD_INFORMATION));
  60
  61   StandardInfo->AllocationSize = Fcb->RFCB.AllocationSize;
  62   StandardInfo->EndOfFile = Fcb->RFCB.FileSize;
  63   StandardInfo->NumberOfLinks = 0;
  64   StandardInfo->DeletePending = FALSE;
  65   StandardInfo->Directory = NtfsFCBIsDirectory(Fcb);
  66
  67   *BufferLength -= sizeof(FILE_STANDARD_INFORMATION);
  68   return(STATUS_SUCCESS);
  69 }
  70
  71
  72 static NTSTATUS
  73 NtfsGetPositionInformation(PFILE_OBJECT FileObject,
  74                            PFILE_POSITION_INFORMATION PositionInfo,
  75                            PULONG BufferLength)
  76 {
  77   DPRINT("NtfsGetPositionInformation() called\n");
  78
  79   if (*BufferLength < sizeof(FILE_POSITION_INFORMATION))
  80     return(STATUS_BUFFER_OVERFLOW);
  81
  82   PositionInfo->CurrentByteOffset.QuadPart =
  83     0;
  84 //    FileObject->CurrentByteOffset.QuadPart;
  85
  86   DPRINT("Getting position %I64x\n",
  87          PositionInfo->CurrentByteOffset.QuadPart);
  88
  89   *BufferLength -= sizeof(FILE_POSITION_INFORMATION);
  90   return(STATUS_SUCCESS);
  91 }
  92
  93
  94 static NTSTATUS
  95 NtfsGetBasicInformation(PFILE_OBJECT FileObject,
  96                         PFCB Fcb,
  97                         PDEVICE_OBJECT DeviceObject,
  98                         PFILE_BASIC_INFORMATION BasicInfo,
  99                         PULONG BufferLength)
 100 {
 101   DPRINT("NtfsGetBasicInformation() called\n");
 102
 103   if (*BufferLength < sizeof(FILE_BASIC_INFORMATION))
 104     return(STATUS_BUFFER_OVERFLOW);
 105
 106 #if 0
 107   CdfsDateTimeToFileTime(Fcb,
 108                          &BasicInfo->CreationTime);
 109   CdfsDateTimeToFileTime(Fcb,
 110                          &BasicInfo->LastAccessTime);
 111   CdfsDateTimeToFileTime(Fcb,
 112                          &BasicInfo->LastWriteTime);
 113   CdfsDateTimeToFileTime(Fcb,
 114                          &BasicInfo->ChangeTime);
 115
 116   CdfsFileFlagsToAttributes(Fcb,
 117                             &BasicInfo->FileAttributes);
 118 #endif
 119
 120   *BufferLength -= sizeof(FILE_BASIC_INFORMATION);
 121
 122   return(STATUS_SUCCESS);
 123 }
 124
 125
 126 static NTSTATUS
 127 NtfsGetNameInformation(PFILE_OBJECT FileObject,
 128                        PFCB Fcb,
 129                        PDEVICE_OBJECT DeviceObject,
 130                        PFILE_NAME_INFORMATION NameInfo,
 131                        PULONG BufferLength)
 132 /*
 133  * FUNCTION: Retrieve the file name information
 134  */
 135 {
 136   ULONG NameLength;
 137
 138   DPRINT("NtfsGetNameInformation() called\n");
 139
 140   assert(NameInfo != NULL);
 141   assert(Fcb != NULL);
 142
 143   NameLength = wcslen(Fcb->PathName) * sizeof(WCHAR);
 144 //  NameLength = 2;
 145   if (*BufferLength < sizeof(FILE_NAME_INFORMATION) + NameLength)
 146     return(STATUS_BUFFER_OVERFLOW);
 147
 148   NameInfo->FileNameLength = NameLength;
 149   memcpy(NameInfo->FileName,
 150          Fcb->PathName,
 151          NameLength + sizeof(WCHAR));
 152 //  wcscpy(NameInfo->FileName, L"\\");
 153
 154   *BufferLength -=
 155     (sizeof(FILE_NAME_INFORMATION) + NameLength + sizeof(WCHAR));
 156
 157   return(STATUS_SUCCESS);
 158 }
 159
 160
 161 static NTSTATUS
 162 NtfsGetInternalInformation(PFCB Fcb,
 163                            PFILE_INTERNAL_INFORMATION InternalInfo,
 164                            PULONG BufferLength)
 165 {
 166   DPRINT("NtfsGetInternalInformation() called\n");
 167
 168   assert(InternalInfo);
 169   assert(Fcb);
 170
 171   if (*BufferLength < sizeof(FILE_INTERNAL_INFORMATION))
 172     return(STATUS_BUFFER_OVERFLOW);
 173
 174   /* FIXME: get a real index, that can be used in a create operation */
 175   InternalInfo->IndexNumber.QuadPart = 0;
 176
 177   *BufferLength -= sizeof(FILE_INTERNAL_INFORMATION);
 178
 179   return(STATUS_SUCCESS);
 180 }
 181
 182
 183 NTSTATUS STDCALL
 184 NtfsQueryInformation(PDEVICE_OBJECT DeviceObject,
 185                      PIRP Irp)
 186 /*
 187  * FUNCTION: Retrieve the specified file information
 188  */
 189 {
 190   FILE_INFORMATION_CLASS FileInformationClass;
 191   PIO_STACK_LOCATION Stack;
 192   PFILE_OBJECT FileObject;
 193   PFCB Fcb;
 194   PVOID SystemBuffer;
 195   ULONG BufferLength;
 196
 197   NTSTATUS Status = STATUS_SUCCESS;
 198
 199   DPRINT("NtfsQueryInformation() called\n");
 200
 201   Stack = IoGetCurrentIrpStackLocation(Irp);
 202   FileInformationClass = Stack->Parameters.QueryFile.FileInformationClass;
 203   FileObject = Stack->FileObject;
 204   Fcb = FileObject->FsContext;
 205
 206   SystemBuffer = Irp->AssociatedIrp.SystemBuffer;
 207   BufferLength = Stack->Parameters.QueryFile.Length;
 208
 209   switch (FileInformationClass)
 210     {
 211       case FileStandardInformation:
 212         Status = NtfsGetStandardInformation(Fcb,
 213                                             DeviceObject,
 214                                             SystemBuffer,
 215                                             &BufferLength);
 216         break;
 217
 218       case FilePositionInformation:
 219         Status = NtfsGetPositionInformation(FileObject,
 220                                             SystemBuffer,
 221                                             &BufferLength);
 222         break;
 223
 224       case FileBasicInformation:
 225         Status = NtfsGetBasicInformation(FileObject,
 226                                          Fcb,
 227                                          DeviceObject,
 228                                          SystemBuffer,
 229                                          &BufferLength);
 230         break;
 231
 232       case FileNameInformation:
 233         Status = NtfsGetNameInformation(FileObject,
 234                                         Fcb,
 235                                         DeviceObject,
 236                                         SystemBuffer,
 237                                         &BufferLength);
 238         break;
 239
 240       case FileInternalInformation:
 241         Status = NtfsGetInternalInformation(Fcb,
 242                                             SystemBuffer,
 243                                             &BufferLength);
 244         break;
 245
 246       case FileAlternateNameInformation:
 247       case FileAllInformation:
 248         Status = STATUS_NOT_IMPLEMENTED;
 249         break;
 250
 251       default:
 252         DPRINT("Unimplemented information class %u\n", FileInformationClass);
 253         Status = STATUS_NOT_SUPPORTED;
 254     }
 255
 256   Irp->IoStatus.Status = Status;
 257   if (NT_SUCCESS(Status))
 258     Irp->IoStatus.Information =
 259       Stack->Parameters.QueryFile.Length - BufferLength;
 260   else
 261     Irp->IoStatus.Information = 0;
 262
 263   IoCompleteRequest(Irp, IO_NO_INCREMENT);
 264
 265   return(Status);
 266 }
 267
 268 /* EOF */