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 1.4 2002/07/20 11:44:24 ekohl Exp $
  20  *
  21  * COPYRIGHT:        See COPYING in the top level directory
  22  * PROJECT:          ReactOS kernel
  23  * FILE:             services/fs/cdfs/finfo.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   RtlCopyMemory(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 static NTSTATUS
 181 CdfsGetNetworkOpenInformation(PFCB Fcb,
 182                               PFILE_NETWORK_OPEN_INFORMATION NetworkInfo,
 183                               PULONG BufferLength)
 184 /*
 185  * FUNCTION: Retrieve the file network open information
 186  */
 187 {
 188   assert(NetworkInfo);
 189   assert(Fcb);
 190
 191   if (*BufferLength < sizeof(FILE_NETWORK_OPEN_INFORMATION))
 192     return(STATUS_BUFFER_OVERFLOW);
 193
 194   CdfsDateTimeToFileTime(Fcb,
 195                          &NetworkInfo->CreationTime);
 196   CdfsDateTimeToFileTime(Fcb,
 197                          &NetworkInfo->LastAccessTime);
 198   CdfsDateTimeToFileTime(Fcb,
 199                          &NetworkInfo->LastWriteTime);
 200   CdfsDateTimeToFileTime(Fcb,
 201                          &NetworkInfo->ChangeTime);
 202   NetworkInfo->AllocationSize = Fcb->RFCB.AllocationSize;
 203   NetworkInfo->EndOfFile = Fcb->RFCB.FileSize;
 204   CdfsFileFlagsToAttributes(Fcb,
 205                             &NetworkInfo->FileAttributes);
 206
 207   *BufferLength -= sizeof(FILE_NETWORK_OPEN_INFORMATION);
 208
 209   return(STATUS_SUCCESS);
 210 }
 211
 212
 213 static NTSTATUS
 214 CdfsGetAllInformation(PFILE_OBJECT FileObject,
 215                       PFCB Fcb,
 216                       PFILE_ALL_INFORMATION Info,
 217                       PULONG BufferLength)
 218 /*
 219  * FUNCTION: Retrieve the all file information
 220  */
 221 {
 222   ULONG NameLength;
 223
 224   assert(Info);
 225   assert(Fcb);
 226
 227   NameLength = wcslen(Fcb->PathName) * sizeof(WCHAR);
 228   if (*BufferLength < sizeof(FILE_ALL_INFORMATION) + NameLength)
 229     return(STATUS_BUFFER_OVERFLOW);
 230
 231   /* Basic Information */
 232   CdfsDateTimeToFileTime(Fcb,
 233                          &Info->BasicInformation.CreationTime);
 234   CdfsDateTimeToFileTime(Fcb,
 235                          &Info->BasicInformation.LastAccessTime);
 236   CdfsDateTimeToFileTime(Fcb,
 237                          &Info->BasicInformation.LastWriteTime);
 238   CdfsDateTimeToFileTime(Fcb,
 239                          &Info->BasicInformation.ChangeTime);
 240   CdfsFileFlagsToAttributes(Fcb,
 241                             &Info->BasicInformation.FileAttributes);
 242
 243   /* Standard Information */
 244   Info->StandardInformation.AllocationSize = Fcb->RFCB.AllocationSize;
 245   Info->StandardInformation.EndOfFile = Fcb->RFCB.FileSize;
 246   Info->StandardInformation.NumberOfLinks = 0;
 247   Info->StandardInformation.DeletePending = FALSE;
 248   Info->StandardInformation.Directory = Fcb->Entry.FileFlags & 0x02 ? TRUE : FALSE;
 249
 250   /* Internal Information */
 251   /* FIXME: get a real index, that can be used in a create operation */
 252   Info->InternalInformation.IndexNumber.QuadPart = 0;
 253
 254   /* EA Information */
 255   Info->EaInformation.EaSize = 0;
 256
 257   /* Access Information */
 258   /* The IO-Manager adds this information */
 259
 260   /* Position Information */
 261   Info->PositionInformation.CurrentByteOffset.QuadPart = FileObject->CurrentByteOffset.QuadPart;
 262
 263   /* Mode Information */
 264   /* The IO-Manager adds this information */
 265
 266   /* Alignment Information */
 267   /* The IO-Manager adds this information */
 268
 269   /* Name Information */
 270   Info->NameInformation.FileNameLength = NameLength;
 271   RtlCopyMemory(Info->NameInformation.FileName,
 272                 Fcb->PathName,
 273                 NameLength + sizeof(WCHAR));
 274
 275   *BufferLength -= (sizeof(FILE_ALL_INFORMATION) + NameLength + sizeof(WCHAR));
 276
 277   return STATUS_SUCCESS;
 278 }
 279
 280
 281 NTSTATUS STDCALL
 282 CdfsQueryInformation(PDEVICE_OBJECT DeviceObject,
 283                      PIRP Irp)
 284 /*
 285  * FUNCTION: Retrieve the specified file information
 286  */
 287 {
 288   FILE_INFORMATION_CLASS FileInformationClass;
 289   PIO_STACK_LOCATION Stack;
 290   PFILE_OBJECT FileObject;
 291   PFCB Fcb;
 292   PVOID SystemBuffer;
 293   ULONG BufferLength;
 294
 295   NTSTATUS Status = STATUS_SUCCESS;
 296
 297   DPRINT("CdfsQueryInformation() called\n");
 298
 299   Stack = IoGetCurrentIrpStackLocation(Irp);
 300   FileInformationClass = Stack->Parameters.QueryFile.FileInformationClass;
 301   FileObject = Stack->FileObject;
 302   Fcb = FileObject->FsContext;
 303
 304   SystemBuffer = Irp->AssociatedIrp.SystemBuffer;
 305   BufferLength = Stack->Parameters.QueryFile.Length;
 306
 307   switch (FileInformationClass)
 308     {
 309       case FileStandardInformation:
 310         Status = CdfsGetStandardInformation(Fcb,
 311                                             DeviceObject,
 312                                             SystemBuffer,
 313                                             &BufferLength);
 314         break;
 315
 316       case FilePositionInformation:
 317         Status = CdfsGetPositionInformation(FileObject,
 318                                             SystemBuffer,
 319                                             &BufferLength);
 320         break;
 321
 322       case FileBasicInformation:
 323         Status = CdfsGetBasicInformation(FileObject,
 324                                          Fcb,
 325                                          DeviceObject,
 326                                          SystemBuffer,
 327                                          &BufferLength);
 328         break;
 329
 330       case FileNameInformation:
 331         Status = CdfsGetNameInformation(FileObject,
 332                                         Fcb,
 333                                         DeviceObject,
 334                                         SystemBuffer,
 335                                         &BufferLength);
 336         break;
 337
 338       case FileInternalInformation:
 339         Status = CdfsGetInternalInformation(Fcb,
 340                                             SystemBuffer,
 341                                             &BufferLength);
 342         break;
 343
 344       case FileNetworkOpenInformation:
 345         Status = CdfsGetNetworkOpenInformation(Fcb,
 346                                                SystemBuffer,
 347                                                &BufferLength);
 348         break;
 349
 350       case FileAllInformation:
 351         Status = CdfsGetAllInformation(FileObject,
 352                                        Fcb,
 353                                        SystemBuffer,
 354                                        &BufferLength);
 355         break;
 356
 357       case FileAlternateNameInformation:
 358         Status = STATUS_NOT_IMPLEMENTED;
 359         break;
 360
 361       default:
 362         DPRINT("Unimplemented information class %u\n", FileInformationClass);
 363         Status = STATUS_NOT_SUPPORTED;
 364     }
 365
 366   Irp->IoStatus.Status = Status;
 367   if (NT_SUCCESS(Status))
 368     Irp->IoStatus.Information =
 369       Stack->Parameters.QueryFile.Length - BufferLength;
 370   else
 371     Irp->IoStatus.Information = 0;
 372
 373   IoCompleteRequest(Irp, IO_NO_INCREMENT);
 374
 375   return(Status);
 376 }
 377
 378 /* EOF */