reactos/drivers/fs/cdfs/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: finfo.c,v 1.2 2002/05/01 13:15:42 ekohl Exp $
  20  *
  21  * COPYRIGHT:        See COPYING in the top level directory
  22  * PROJECT:          ReactOS kernel
  23  * FILE:             services/fs/cdfs/dirctl.c
  24  * PURPOSE:          CDROM (ISO 9660) filesystem driver
  25  * PROGRAMMER:       Art Yerkes
  26  *                   Eric Kohl
  27  * UPDATE HISTORY:
  28  */
  29
  30 /* INCLUDES *****************************************************************/
  31
  32 #include <ddk/ntddk.h>
  33
  34 #define NDEBUG
  35 #include <debug.h>
  36
  37 #include "cdfs.h"
  38
  39
  40 /* FUNCTIONS ****************************************************************/
  41
  42 static NTSTATUS
  43 CdfsGetStandardInformation(PFCB Fcb,
  44                            PDEVICE_OBJECT DeviceObject,
  45                            PFILE_STANDARD_INFORMATION StandardInfo,
  46                            PULONG BufferLength)
  47 /*
  48  * FUNCTION: Retrieve the standard file information
  49  */
  50 {
  51   DPRINT("CdfsGetStandardInformation() called\n");
  52
  53   if (*BufferLength < sizeof(FILE_STANDARD_INFORMATION))
  54     return STATUS_BUFFER_OVERFLOW;
  55
  56   /* PRECONDITION */
  57   assert(StandardInfo != NULL);
  58   assert(Fcb != NULL);
  59
  60   RtlZeroMemory(StandardInfo,
  61                 sizeof(FILE_STANDARD_INFORMATION));
  62
  63   StandardInfo->AllocationSize = Fcb->RFCB.AllocationSize;
  64   StandardInfo->EndOfFile = Fcb->RFCB.FileSize;
  65   StandardInfo->NumberOfLinks = 0;
  66   StandardInfo->DeletePending = FALSE;
  67   StandardInfo->Directory = Fcb->Entry.FileFlags & 0x02 ? TRUE : FALSE;
  68
  69   *BufferLength -= sizeof(FILE_STANDARD_INFORMATION);
  70   return(STATUS_SUCCESS);
  71 }
  72
  73
  74 static NTSTATUS
  75 CdfsGetPositionInformation(PFILE_OBJECT FileObject,
  76                            PFILE_POSITION_INFORMATION PositionInfo,
  77                            PULONG BufferLength)
  78 {
  79   DPRINT("CdfsGetPositionInformation() called\n");
  80
  81   if (*BufferLength < sizeof(FILE_POSITION_INFORMATION))
  82     return STATUS_BUFFER_OVERFLOW;
  83
  84   PositionInfo->CurrentByteOffset.QuadPart =
  85     FileObject->CurrentByteOffset.QuadPart;
  86
  87   DPRINT("Getting position %I64x\n",
  88          PositionInfo->CurrentByteOffset.QuadPart);
  89
  90   *BufferLength -= sizeof(FILE_POSITION_INFORMATION);
  91   return(STATUS_SUCCESS);
  92 }
  93
  94
  95 static NTSTATUS
  96 CdfsGetBasicInformation(PFILE_OBJECT FileObject,
  97                         PFCB Fcb,
  98                         PDEVICE_OBJECT DeviceObject,
  99                         PFILE_BASIC_INFORMATION BasicInfo,
 100                         PULONG BufferLength)
 101 {
 102   DPRINT("CdfsGetBasicInformation() called\n");
 103
 104   if (*BufferLength < sizeof(FILE_BASIC_INFORMATION))
 105     return STATUS_BUFFER_OVERFLOW;
 106
 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
 119   *BufferLength -= sizeof(FILE_BASIC_INFORMATION);
 120
 121   return(STATUS_SUCCESS);
 122 }
 123
 124
 125 static NTSTATUS
 126 CdfsGetNameInformation(PFILE_OBJECT FileObject,
 127                        PFCB Fcb,
 128                        PDEVICE_OBJECT DeviceObject,
 129                        PFILE_NAME_INFORMATION NameInfo,
 130                        PULONG BufferLength)
 131 /*
 132  * FUNCTION: Retrieve the file name information
 133  */
 134 {
 135   ULONG NameLength;
 136
 137   DPRINT("CdfsGetNameInformation() called\n");
 138
 139   assert(NameInfo != NULL);
 140   assert(Fcb != NULL);
 141
 142   NameLength = wcslen(Fcb->PathName) * sizeof(WCHAR);
 143   if (*BufferLength < sizeof(FILE_NAME_INFORMATION) + NameLength)
 144     return STATUS_BUFFER_OVERFLOW;
 145
 146   NameInfo->FileNameLength = NameLength;
 147   memcpy(NameInfo->FileName,
 148          Fcb->PathName,
 149          NameLength + sizeof(WCHAR));
 150
 151   *BufferLength -=
 152     (sizeof(FILE_NAME_INFORMATION) + NameLength + sizeof(WCHAR));
 153
 154   return STATUS_SUCCESS;
 155 }
 156
 157
 158 static NTSTATUS
 159 CdfsGetInternalInformation(PFCB Fcb,
 160                            PFILE_INTERNAL_INFORMATION InternalInfo,
 161                            PULONG BufferLength)
 162 {
 163   DPRINT("CdfsGetInternalInformation() called\n");
 164
 165   assert(InternalInfo);
 166   assert(Fcb);
 167
 168   if (*BufferLength < sizeof(FILE_INTERNAL_INFORMATION))
 169     return(STATUS_BUFFER_OVERFLOW);
 170
 171   /* FIXME: get a real index, that can be used in a create operation */
 172   InternalInfo->IndexNumber.QuadPart = 0;
 173
 174   *BufferLength -= sizeof(FILE_INTERNAL_INFORMATION);
 175
 176   return(STATUS_SUCCESS);
 177 }
 178
 179
 180 NTSTATUS STDCALL
 181 CdfsQueryInformation(PDEVICE_OBJECT DeviceObject,
 182                      PIRP Irp)
 183 /*
 184  * FUNCTION: Retrieve the specified file information
 185  */
 186 {
 187   FILE_INFORMATION_CLASS FileInformationClass;
 188   PIO_STACK_LOCATION Stack;
 189   PFILE_OBJECT FileObject;
 190   PFCB Fcb;
 191   PVOID SystemBuffer;
 192   ULONG BufferLength;
 193
 194   NTSTATUS Status = STATUS_SUCCESS;
 195
 196   DPRINT("CdfsQueryInformation() called\n");
 197
 198   Stack = IoGetCurrentIrpStackLocation(Irp);
 199   FileInformationClass = Stack->Parameters.QueryFile.FileInformationClass;
 200   FileObject = Stack->FileObject;
 201   Fcb = FileObject->FsContext;
 202
 203   SystemBuffer = Irp->AssociatedIrp.SystemBuffer;
 204   BufferLength = Stack->Parameters.QueryFile.Length;
 205
 206   switch (FileInformationClass)
 207     {
 208       case FileStandardInformation:
 209         Status = CdfsGetStandardInformation(Fcb,
 210                                             DeviceObject,
 211                                             SystemBuffer,
 212                                             &BufferLength);
 213         break;
 214
 215       case FilePositionInformation:
 216         Status = CdfsGetPositionInformation(FileObject,
 217                                             SystemBuffer,
 218                                             &BufferLength);
 219         break;
 220
 221       case FileBasicInformation:
 222         Status = CdfsGetBasicInformation(FileObject,
 223                                          Fcb,
 224                                          DeviceObject,
 225                                          SystemBuffer,
 226                                          &BufferLength);
 227         break;
 228
 229       case FileNameInformation:
 230         Status = CdfsGetNameInformation(FileObject,
 231                                         Fcb,
 232                                         DeviceObject,
 233                                         SystemBuffer,
 234                                         &BufferLength);
 235         break;
 236
 237       case FileInternalInformation:
 238         Status = CdfsGetInternalInformation(Fcb,
 239                                             SystemBuffer,
 240                                             &BufferLength);
 241         break;
 242
 243       case FileAlternateNameInformation:
 244       case FileAllInformation:
 245         Status = STATUS_NOT_IMPLEMENTED;
 246         break;
 247
 248       default:
 249         DPRINT("Unimplemented information class %u\n", FileInformationClass);
 250         Status = STATUS_NOT_SUPPORTED;
 251     }
 252
 253   Irp->IoStatus.Status = Status;
 254   if (NT_SUCCESS(Status))
 255     Irp->IoStatus.Information =
 256       Stack->Parameters.QueryFile.Length - BufferLength;
 257   else
 258     Irp->IoStatus.Information = 0;
 259
 260   IoCompleteRequest(Irp, IO_NO_INCREMENT);
 261
 262   return(Status);
 263 }
 264
 265 /* EOF */