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 1.1 2002/04/15 20:39:49 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  * UPDATE HISTORY:
  27  */
  28
  29 /* INCLUDES *****************************************************************/
  30
  31 #include <ddk/ntddk.h>
  32
  33 //#define NDEBUG
  34 #include <debug.h>
  35
  36 #include "cdfs.h"
  37
  38
  39 /* FUNCTIONS ****************************************************************/
  40
  41 static NTSTATUS
  42 CdfsQueryNameInformation(PFILE_OBJECT FileObject,
  43                          PFCB Fcb,
  44                          PDEVICE_OBJECT DeviceObject,
  45                          PFILE_NAME_INFORMATION NameInfo,
  46                          PULONG BufferLength)
  47 /*
  48  * FUNCTION: Retrieve the file name information
  49  */
  50 {
  51   ULONG NameLength;
  52
  53   assert (NameInfo != NULL);
  54   assert (Fcb != NULL);
  55
  56 #if 0
  57   NameLength = wcslen(FCB->PathName) * sizeof(WCHAR);
  58   if (*BufferLength < sizeof(FILE_NAME_INFORMATION) + NameLength)
  59     return STATUS_BUFFER_OVERFLOW;
  60
  61   NameInfo->FileNameLength = NameLength;
  62   memcpy(NameInfo->FileName,
  63          FCB->PathName,
  64          NameLength + sizeof(WCHAR));
  65 #endif
  66
  67   /* Fake name */
  68   NameLength = 2;
  69   wcscpy(NameInfo->FileName, L"\\");
  70
  71   *BufferLength -=
  72     (sizeof(FILE_NAME_INFORMATION) + NameLength + sizeof(WCHAR));
  73
  74   return STATUS_SUCCESS;
  75 }
  76
  77
  78 NTSTATUS STDCALL
  79 CdfsQueryInformation(PDEVICE_OBJECT DeviceObject,
  80                      PIRP Irp)
  81 /*
  82  * FUNCTION: Retrieve the specified file information
  83  */
  84 {
  85   FILE_INFORMATION_CLASS FileInformationClass;
  86   PIO_STACK_LOCATION Stack;
  87   PFILE_OBJECT FileObject;
  88   PFCB Fcb;
  89   PVOID SystemBuffer;
  90   ULONG BufferLength;
  91
  92   NTSTATUS Status = STATUS_SUCCESS;
  93
  94   DPRINT1("CdfsQueryInformation() called\n");
  95
  96   Stack = IoGetCurrentIrpStackLocation(Irp);
  97   FileInformationClass = Stack->Parameters.QueryFile.FileInformationClass;
  98   FileObject = Stack->FileObject;
  99   Fcb = FileObject->FsContext;
 100
 101   SystemBuffer = Irp->AssociatedIrp.SystemBuffer;
 102   BufferLength = Stack->Parameters.QueryFile.Length;
 103
 104   switch (FileInformationClass)
 105     {
 106 #if 0
 107       case FileStandardInformation:
 108         Status = CdfsGetStandardInformation(Fcb,
 109                                       IrpContext->DeviceObject,
 110                                       SystemBuffer,
 111                                       &BufferLength);
 112       break;
 113     case FilePositionInformation:
 114       RC = CdfsGetPositionInformation(IrpContext->FileObject,
 115                                       FCB,
 116                                       IrpContext->DeviceObject,
 117                                       SystemBuffer,
 118                                       &BufferLength);
 119       break;
 120     case FileBasicInformation:
 121       RC = CdfsGetBasicInformation(FileObject,
 122                                    FCB,
 123                                    DeviceObject,
 124                                    SystemBuffer,
 125                                    &BufferLength);
 126       break;
 127 #endif
 128
 129       case FileNameInformation:
 130         Status = CdfsQueryNameInformation(FileObject,
 131                                          Fcb,
 132                                          DeviceObject,
 133                                          SystemBuffer,
 134                                          &BufferLength);
 135         break;
 136
 137 #if 0
 138       case FileInternalInformation:
 139         Status = CdfsGetInternalInformation(Fcb,
 140                                            SystemBuffer,
 141                                            &BufferLength);
 142         break;
 143
 144       case FileAlternateNameInformation:
 145       case FileAllInformation:
 146         Status = STATUS_NOT_IMPLEMENTED;
 147         break;
 148 #endif
 149       default:
 150         DPRINT("Unimplemented information class %u\n", FileInformationClass);
 151         Status = STATUS_NOT_SUPPORTED;
 152     }
 153
 154   Irp->IoStatus.Status = Status;
 155   if (NT_SUCCESS(Status))
 156     Irp->IoStatus.Information =
 157       Stack->Parameters.QueryFile.Length - BufferLength;
 158   else
 159     Irp->IoStatus.Information = 0;
 160
 161   IoCompleteRequest(Irp, IO_NO_INCREMENT);
 162
 163   return(Status);
 164 }
 165
 166 /* EOF */