src/WINNT/afsrdr/kernel/lib/AFSFSControl.cpp

   1 /*
   2  * Copyright (c) 2008, 2009, 2010, 2011 Kernel Drivers, LLC.
   3  * Copyright (c) 2009, 2010, 2011 Your File System, Inc.
   4  * All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  *
  10  * - Redistributions of source code must retain the above copyright notice,
  11  *   this list of conditions and the following disclaimer.
  12  * - Redistributions in binary form must reproduce the above copyright
  13  *   notice,
  14  *   this list of conditions and the following disclaimer in the
  15  *   documentation
  16  *   and/or other materials provided with the distribution.
  17  * - Neither the names of Kernel Drivers, LLC and Your File System, Inc.
  18  *   nor the names of their contributors may be used to endorse or promote
  19  *   products derived from this software without specific prior written
  20  *   permission from Kernel Drivers, LLC and Your File System, Inc.
  21  *
  22  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  23  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  24  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
  25  * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
  26  * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  27  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  28  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  29  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
  30  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
  31  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  32  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  33  */
  34
  35 //
  36 // File: AFSFSControl.cpp
  37 //
  38
  39 #include "AFSCommon.h"
  40
  41 NTSTATUS
  42 AFSFSControl( IN PDEVICE_OBJECT LibDeviceObject,
  43               IN PIRP Irp)
  44 {
  45
  46     NTSTATUS ntStatus = STATUS_SUCCESS;
  47     IO_STACK_LOCATION *pIrpSp;
  48
  49     pIrpSp = IoGetCurrentIrpStackLocation( Irp);
  50
  51     __try
  52     {
  53
  54         switch( pIrpSp->MinorFunction)
  55         {
  56
  57             case IRP_MN_USER_FS_REQUEST:
  58
  59                 ntStatus = AFSProcessUserFsRequest( Irp);
  60
  61                 break;
  62
  63             case IRP_MN_MOUNT_VOLUME:
  64
  65                 break;
  66
  67             case IRP_MN_VERIFY_VOLUME:
  68
  69                 break;
  70
  71             default:
  72
  73                 break;
  74         }
  75
  76         AFSCompleteRequest( Irp,
  77                               ntStatus);
  78
  79     }
  80     __except( AFSExceptionFilter( __FUNCTION__, GetExceptionCode(), GetExceptionInformation()) )
  81     {
  82
  83         AFSDbgLogMsg( 0,
  84                       0,
  85                       "EXCEPTION - AFSFSControl\n");
  86
  87         AFSDumpTraceFilesFnc();
  88     }
  89
  90     return ntStatus;
  91 }
  92
  93 static BOOLEAN
  94 AFSParseMountPointTarget( IN  UNICODE_STRING *Target,
  95                           OUT USHORT         *Type,
  96                           OUT UNICODE_STRING *Volume,
  97                           OUT UNICODE_STRING *Cell)
  98 {
  99     // Targets are of the form <type>[<cell>:]<volume>
 100
 101     *Type = Target->Buffer[ 0];
 102
 103     // Extract the cell name (if any)
 104
 105     Cell->Buffer = &Target->Buffer[ 1];
 106
 107     // Search for colon separator or end of counted string
 108
 109     for ( Cell->Length = 0; Cell->Length < Target->Length - sizeof( WCHAR); Cell->Length += sizeof( WCHAR))
 110     {
 111
 112         if ( Cell->Buffer[ Cell->Length / sizeof( WCHAR)] == L':')
 113         {
 114             break;
 115         }
 116     }
 117
 118     // If a colon is not found, it means there is no cell
 119
 120     if ( Cell->Length < Target->Length - sizeof( WCHAR) &&
 121          Cell->Buffer[ Cell->Length / sizeof( WCHAR)] == L':')
 122     {
 123
 124         Cell->MaximumLength = Cell->Length;
 125
 126         if ( Cell->Length > Target->Length - 2 * sizeof( WCHAR))
 127         {
 128             // Invalid target string if there is no room for
 129             // the volume name.
 130
 131             return FALSE;
 132         }
 133
 134         Volume->Length = Volume->MaximumLength = (Target->Length - Cell->Length - 2 * sizeof( WCHAR));
 135
 136         Volume->Buffer = &Target->Buffer[ Cell->Length / sizeof( WCHAR) + 2];
 137     }
 138     else
 139     {
 140         // There is no cell
 141
 142         Volume->Length = Volume->MaximumLength = Cell->Length;
 143
 144         Volume->Buffer = Cell->Buffer;
 145
 146         Cell->Length = Cell->MaximumLength = 0;
 147
 148         Cell->Buffer = NULL;
 149     }
 150
 151     return TRUE;
 152 }
 153
 154 NTSTATUS
 155 AFSProcessUserFsRequest( IN PIRP Irp)
 156 {
 157
 158     NTSTATUS ntStatus = STATUS_SUCCESS;
 159     ULONG ulFsControlCode;
 160     AFSFcb *pFcb = NULL;
 161     PIO_STACK_LOCATION pIrpSp = IoGetCurrentIrpStackLocation( Irp );
 162     AFSCcb *pCcb = NULL;
 163     ULONG ulOutputBufferLen, ulInputBufferLen;
 164
 165     __Enter
 166     {
 167
 168         ulFsControlCode = pIrpSp->Parameters.FileSystemControl.FsControlCode;
 169
 170         pFcb = (AFSFcb *)pIrpSp->FileObject->FsContext;
 171
 172         pCcb = (AFSCcb *)pIrpSp->FileObject->FsContext2;
 173
 174         if( pFcb == NULL ||
 175             pCcb->DirectoryCB == NULL)
 176         {
 177
 178             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
 179                           AFS_TRACE_LEVEL_VERBOSE_2,
 180                           "AFSProcessUserFsRequest Invalid Fcb\n");
 181
 182             try_return( ntStatus = STATUS_INVALID_DEVICE_REQUEST);
 183         }
 184
 185         if( pFcb->Header.NodeTypeCode == AFS_SPECIAL_SHARE_FCB)
 186         {
 187
 188             ntStatus = AFSProcessShareFsCtrl( Irp,
 189                                               pFcb,
 190                                               pCcb);
 191
 192             try_return( ntStatus);
 193         }
 194
 195         ulOutputBufferLen = pIrpSp->Parameters.FileSystemControl.OutputBufferLength;
 196         ulInputBufferLen = pIrpSp->Parameters.FileSystemControl.InputBufferLength;
 197
 198         //
 199         // Process the request
 200         //
 201
 202         switch( ulFsControlCode )
 203         {
 204
 205             case FSCTL_REQUEST_OPLOCK_LEVEL_1:
 206             case FSCTL_REQUEST_OPLOCK_LEVEL_2:
 207             case FSCTL_REQUEST_BATCH_OPLOCK:
 208             case FSCTL_OPLOCK_BREAK_ACKNOWLEDGE:
 209             case FSCTL_OPBATCH_ACK_CLOSE_PENDING:
 210             case FSCTL_OPLOCK_BREAK_NOTIFY:
 211             case FSCTL_OPLOCK_BREAK_ACK_NO_2:
 212             case FSCTL_REQUEST_FILTER_OPLOCK :
 213             {
 214                 //
 215                 // Note that implementing this call will probably need us
 216                 // to call the server as well as adding code in read and
 217                 // write and caching.  Also that it is unlikely that
 218                 // anyone will ever call us at this point - RDR doesn't
 219                 // allow it
 220                 //
 221
 222                 ntStatus = STATUS_NOT_IMPLEMENTED;
 223
 224                 break;
 225             }
 226
 227             case FSCTL_LOCK_VOLUME:
 228             {
 229                 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
 230                               AFS_TRACE_LEVEL_VERBOSE_2,
 231                               "AFSProcessUserFsRequest Processing FSCTL_LOCK_VOLUME request\n");
 232
 233                 ntStatus = STATUS_NOT_IMPLEMENTED;
 234
 235                 break;
 236             }
 237
 238             case FSCTL_UNLOCK_VOLUME:
 239             {
 240                 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
 241                               AFS_TRACE_LEVEL_VERBOSE_2,
 242                               "AFSProcessUserFsRequest Processing FSCTL_UNLOCK_VOLUME request\n");
 243
 244                 ntStatus = STATUS_NOT_IMPLEMENTED;
 245
 246                 break;
 247             }
 248
 249             case FSCTL_DISMOUNT_VOLUME:
 250             {
 251                 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
 252                               AFS_TRACE_LEVEL_VERBOSE_2,
 253                               "AFSProcessUserFsRequest Processing FSCTL_DISMOUNT_VOLUME request\n");
 254
 255                 ntStatus = STATUS_NOT_IMPLEMENTED;
 256
 257                 break;
 258             }
 259
 260             case FSCTL_MARK_VOLUME_DIRTY:
 261             {
 262                 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
 263                               AFS_TRACE_LEVEL_VERBOSE_2,
 264                               "AFSProcessUserFsRequest Processing FSCTL_MARK_VOLUME_DIRTY request\n");
 265
 266                 ntStatus = STATUS_NOT_IMPLEMENTED;
 267
 268                 break;
 269             }
 270
 271             case FSCTL_IS_VOLUME_DIRTY:
 272             {
 273                 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
 274                               AFS_TRACE_LEVEL_VERBOSE_2,
 275                               "AFSProcessUserFsRequest Processing FSCTL_IS_VOLUME_DIRTY request\n");
 276
 277                 ntStatus = STATUS_NOT_IMPLEMENTED;
 278
 279                 break;
 280             }
 281
 282             case FSCTL_IS_VOLUME_MOUNTED:
 283             {
 284                 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
 285                               AFS_TRACE_LEVEL_VERBOSE_2,
 286                               "AFSProcessUserFsRequest Processing FSCTL_IS_VOLUME_MOUNTED request\n");
 287
 288                 ntStatus = STATUS_NOT_IMPLEMENTED;
 289
 290                 break;
 291             }
 292
 293             case FSCTL_IS_PATHNAME_VALID:
 294             {
 295                 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
 296                               AFS_TRACE_LEVEL_VERBOSE_2,
 297                               "AFSProcessUserFsRequest Processing FSCTL_IS_PATHNAME_VALID request\n");
 298
 299                 ntStatus = STATUS_SUCCESS;
 300
 301                 break;
 302             }
 303
 304 #ifndef FSCTL_CSC_INTERNAL
 305 #define FSCTL_CSC_INTERNAL                  CTL_CODE(FILE_DEVICE_FILE_SYSTEM, 107, METHOD_NEITHER, FILE_ANY_ACCESS)
 306 #endif
 307             case FSCTL_CSC_INTERNAL:
 308             {
 309                 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
 310                               AFS_TRACE_LEVEL_VERBOSE_2,
 311                               "AFSProcessUserFsRequest Processing FSCTL_CSC_INTERNAL request\n");
 312
 313                 ntStatus = STATUS_INVALID_DEVICE_REQUEST;
 314
 315                 break;
 316             }
 317
 318             case FSCTL_GET_REPARSE_POINT:
 319             {
 320
 321                 REPARSE_GUID_DATA_BUFFER *pReparseBuffer = (REPARSE_GUID_DATA_BUFFER *)Irp->AssociatedIrp.SystemBuffer;
 322                 ULONG ulRemainingLen = ulOutputBufferLen;
 323                 AFSReparseTagInfo *pReparseInfo = NULL;
 324
 325                 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
 326                               AFS_TRACE_LEVEL_VERBOSE_2,
 327                               "AFSProcessUserFsRequest Processing FSCTL_GET_REPARSE_POINT request %wZ Type 0x%x Attrib 0x%x\n",
 328                               &pCcb->DirectoryCB->NameInformation.FileName,
 329                               pCcb->DirectoryCB->ObjectInformation->FileType,
 330                               pCcb->DirectoryCB->ObjectInformation->FileAttributes);
 331
 332                 //
 333                 // Check if we have the reparse entry set on the entry
 334                 //
 335
 336                 if( !BooleanFlagOn( pCcb->DirectoryCB->ObjectInformation->FileAttributes, FILE_ATTRIBUTE_REPARSE_POINT))
 337                 {
 338
 339                     ntStatus = STATUS_NOT_A_REPARSE_POINT;
 340
 341                     break;
 342                 }
 343
 344                 if( ulOutputBufferLen < FIELD_OFFSET( REPARSE_GUID_DATA_BUFFER, GenericReparseBuffer.DataBuffer))
 345                 {
 346
 347                     ntStatus = STATUS_BUFFER_TOO_SMALL;
 348
 349                     Irp->IoStatus.Information = FIELD_OFFSET( REPARSE_GUID_DATA_BUFFER, GenericReparseBuffer.DataBuffer);
 350
 351                     break;
 352                 }
 353
 354                 ulRemainingLen -= FIELD_OFFSET( REPARSE_GUID_DATA_BUFFER, GenericReparseBuffer.DataBuffer);
 355
 356                 //
 357                 // Populate the data in the reparse buffer
 358                 //
 359
 360                 pReparseBuffer->ReparseDataLength  = 0;
 361
 362                 AFSAcquireExcl( &pCcb->DirectoryCB->NonPaged->Lock,
 363                                 TRUE);
 364
 365                 if( pCcb->DirectoryCB->NameInformation.TargetName.Length == 0)
 366                 {
 367
 368                     //
 369                     // We'll reset the DV to ensure we validate the metadata content
 370                     //
 371
 372                     pCcb->DirectoryCB->ObjectInformation->DataVersion.QuadPart = (ULONGLONG)-1;
 373
 374                     SetFlag( pCcb->DirectoryCB->ObjectInformation->Flags, AFS_OBJECT_FLAGS_VERIFY);
 375
 376                     AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
 377                                   AFS_TRACE_LEVEL_VERBOSE,
 378                                   "AFSProcessUserFsRequest Verifying symlink %wZ FID %08lX-%08lX-%08lX-%08lX\n",
 379                                   &pCcb->DirectoryCB->NameInformation.FileName,
 380                                   pCcb->DirectoryCB->ObjectInformation->FileId.Cell,
 381                                   pCcb->DirectoryCB->ObjectInformation->FileId.Volume,
 382                                   pCcb->DirectoryCB->ObjectInformation->FileId.Vnode,
 383                                   pCcb->DirectoryCB->ObjectInformation->FileId.Unique);
 384
 385                     ntStatus = AFSVerifyEntry( &pCcb->AuthGroup,
 386                                                pCcb->DirectoryCB);
 387
 388                     if( !NT_SUCCESS( ntStatus))
 389                     {
 390
 391                         AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
 392                                       AFS_TRACE_LEVEL_ERROR,
 393                                       "AFSProcessUserFsRequest Failed to verify symlink %wZ FID %08lX-%08lX-%08lX-%08lX Status %08lX\n",
 394                                       &pCcb->DirectoryCB->NameInformation.FileName,
 395                                       pCcb->DirectoryCB->ObjectInformation->FileId.Cell,
 396                                       pCcb->DirectoryCB->ObjectInformation->FileId.Volume,
 397                                       pCcb->DirectoryCB->ObjectInformation->FileId.Vnode,
 398                                       pCcb->DirectoryCB->ObjectInformation->FileId.Unique,
 399                                       ntStatus);
 400
 401                         AFSReleaseResource( &pCcb->DirectoryCB->NonPaged->Lock);
 402
 403                         break;
 404                     }
 405                 }
 406
 407                 pReparseInfo = (AFSReparseTagInfo *)&pReparseBuffer->GenericReparseBuffer.DataBuffer[ 0];
 408
 409                 switch( pCcb->DirectoryCB->ObjectInformation->FileType)
 410                 {
 411
 412                     case AFS_FILE_TYPE_SYMLINK:
 413                     {
 414
 415                         if( pCcb->DirectoryCB->NameInformation.TargetName.Length == 0)
 416                         {
 417
 418                             ntStatus = STATUS_REPARSE_POINT_NOT_RESOLVED;
 419
 420                             break;
 421                         }
 422
 423                         if( ulRemainingLen < (ULONG) FIELD_OFFSET( AFSReparseTagInfo, AFSSymLink.Buffer) + pCcb->DirectoryCB->NameInformation.TargetName.Length)
 424                         {
 425
 426                             ntStatus = STATUS_BUFFER_TOO_SMALL;
 427
 428                             Irp->IoStatus.Information = FIELD_OFFSET( REPARSE_GUID_DATA_BUFFER, GenericReparseBuffer.DataBuffer) +
 429                                                         FIELD_OFFSET( AFSReparseTagInfo, AFSSymLink.Buffer) +
 430                                                         pCcb->DirectoryCB->NameInformation.TargetName.Length;
 431
 432                             break;
 433                         }
 434
 435                         pReparseInfo->SubTag = OPENAFS_SUBTAG_SYMLINK;
 436
 437                         pReparseInfo->AFSSymLink.RelativeLink = AFSIsRelativeName( &pCcb->DirectoryCB->NameInformation.TargetName);
 438
 439                         pReparseInfo->AFSSymLink.SymLinkTargetLength = pCcb->DirectoryCB->NameInformation.TargetName.Length;
 440
 441                         RtlCopyMemory( pReparseInfo->AFSSymLink.Buffer,
 442                                        pCcb->DirectoryCB->NameInformation.TargetName.Buffer,
 443                                        pCcb->DirectoryCB->NameInformation.TargetName.Length);
 444
 445                         pReparseBuffer->ReparseDataLength = (FIELD_OFFSET( AFSReparseTagInfo, AFSSymLink.Buffer) + pCcb->DirectoryCB->NameInformation.TargetName.Length);
 446
 447                         break;
 448                     }
 449
 450                     case AFS_FILE_TYPE_MOUNTPOINT:
 451                     {
 452                         UNICODE_STRING Cell, Volume;
 453                         USHORT Type;
 454
 455                         if( pCcb->DirectoryCB->NameInformation.TargetName.Length == 0)
 456                         {
 457                             ntStatus = STATUS_REPARSE_POINT_NOT_RESOLVED;
 458
 459                             break;
 460                         }
 461
 462                         if ( !AFSParseMountPointTarget( &pCcb->DirectoryCB->NameInformation.TargetName,
 463                                                         &Type,
 464                                                         &Volume,
 465                                                         &Cell))
 466                         {
 467                             ntStatus = STATUS_INVALID_PARAMETER;
 468
 469                             break;
 470                         }
 471
 472                         if( ulRemainingLen < (ULONG) FIELD_OFFSET( AFSReparseTagInfo, AFSMountPoint.Buffer) + Volume.Length + Cell.Length)
 473                         {
 474
 475                             ntStatus = STATUS_BUFFER_TOO_SMALL;
 476
 477                             Irp->IoStatus.Information = FIELD_OFFSET( REPARSE_GUID_DATA_BUFFER, GenericReparseBuffer.DataBuffer) +
 478                                                         FIELD_OFFSET( AFSReparseTagInfo, AFSMountPoint.Buffer) +
 479                                                         Volume.Length + Cell.Length;
 480
 481                             break;
 482                         }
 483
 484                         pReparseInfo->SubTag = OPENAFS_SUBTAG_MOUNTPOINT;
 485
 486                         pReparseInfo->AFSMountPoint.Type = Type;
 487
 488                         pReparseInfo->AFSMountPoint.MountPointCellLength = Cell.Length;
 489
 490                         pReparseInfo->AFSMountPoint.MountPointVolumeLength = Volume.Length;
 491
 492                         RtlCopyMemory( pReparseInfo->AFSMountPoint.Buffer,
 493                                        Cell.Buffer,
 494                                        Cell.Length);
 495
 496                         RtlCopyMemory( &pReparseInfo->AFSMountPoint.Buffer[ Cell.Length / sizeof( WCHAR)],
 497                                        Volume.Buffer,
 498                                        Volume.Length);
 499
 500                         pReparseBuffer->ReparseDataLength = (FIELD_OFFSET( AFSReparseTagInfo, AFSMountPoint.Buffer) + Volume.Length + Cell.Length);
 501
 502                         break;
 503                     }
 504
 505                     case AFS_FILE_TYPE_DFSLINK:
 506                     {
 507
 508                         if( pCcb->DirectoryCB->NameInformation.TargetName.Length == 0)
 509                         {
 510
 511                             ntStatus = STATUS_REPARSE_POINT_NOT_RESOLVED;
 512
 513                             break;
 514                         }
 515
 516                         if( ulRemainingLen < (ULONG) FIELD_OFFSET( AFSReparseTagInfo, UNCReferral.Buffer) + pCcb->DirectoryCB->NameInformation.TargetName.Length)
 517                         {
 518
 519                             ntStatus = STATUS_BUFFER_TOO_SMALL;
 520
 521                             Irp->IoStatus.Information = FIELD_OFFSET( REPARSE_GUID_DATA_BUFFER, GenericReparseBuffer.DataBuffer) +
 522                                                         FIELD_OFFSET( AFSReparseTagInfo, UNCReferral.Buffer) +
 523                                                         pCcb->DirectoryCB->NameInformation.TargetName.Length;
 524
 525                             break;
 526                         }
 527
 528                         pReparseInfo->SubTag = OPENAFS_SUBTAG_UNC;
 529
 530                         pReparseInfo->UNCReferral.UNCTargetLength = pCcb->DirectoryCB->NameInformation.TargetName.Length;
 531
 532                         RtlCopyMemory( pReparseInfo->UNCReferral.Buffer,
 533                                        pCcb->DirectoryCB->NameInformation.TargetName.Buffer,
 534                                        pCcb->DirectoryCB->NameInformation.TargetName.Length);
 535
 536                         pReparseBuffer->ReparseDataLength = (FIELD_OFFSET( AFSReparseTagInfo, UNCReferral.Buffer) + pCcb->DirectoryCB->NameInformation.TargetName.Length);
 537
 538                         break;
 539                     }
 540
 541                     default:
 542
 543                         ntStatus = STATUS_NOT_A_REPARSE_POINT;
 544
 545                         break;
 546                 }
 547
 548                 if ( ntStatus == STATUS_SUCCESS)
 549                 {
 550
 551                     ulRemainingLen -= pReparseBuffer->ReparseDataLength;
 552
 553                     pReparseBuffer->ReparseTag = IO_REPARSE_TAG_SURROGATE|IO_REPARSE_TAG_OPENAFS_DFS;
 554
 555                     RtlCopyMemory( &pReparseBuffer->ReparseGuid,
 556                                    &GUID_AFS_REPARSE_GUID,
 557                                    sizeof( GUID));
 558
 559                     Irp->IoStatus.Information = FIELD_OFFSET( REPARSE_GUID_DATA_BUFFER, GenericReparseBuffer.DataBuffer) +
 560                                                               pReparseBuffer->ReparseDataLength;
 561                 }
 562
 563                 AFSReleaseResource( &pCcb->DirectoryCB->NonPaged->Lock);
 564
 565                 break;
 566             }
 567
 568             case FSCTL_SET_REPARSE_POINT:
 569             {
 570
 571                 REPARSE_GUID_DATA_BUFFER *pReparseBuffer = (REPARSE_GUID_DATA_BUFFER *)Irp->AssociatedIrp.SystemBuffer;
 572
 573                 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
 574                               AFS_TRACE_LEVEL_VERBOSE_2,
 575                               "AFSProcessUserFsRequest Processing FSCTL_SET_REPARSE_POINT request %wZ Type 0x%x Attrib 0x%x\n",
 576                               &pCcb->DirectoryCB->NameInformation.FileName,
 577                               pCcb->DirectoryCB->ObjectInformation->FileType,
 578                               pCcb->DirectoryCB->ObjectInformation->FileAttributes);
 579
 580                 //
 581                 // Check if we have the reparse entry set on the entry
 582                 //
 583
 584                 if( !BooleanFlagOn( pCcb->DirectoryCB->ObjectInformation->FileAttributes, FILE_ATTRIBUTE_REPARSE_POINT))
 585                 {
 586
 587                     ntStatus = STATUS_NOT_A_REPARSE_POINT;
 588
 589                     break;
 590                 }
 591
 592                 if( ulInputBufferLen < FIELD_OFFSET( REPARSE_GUID_DATA_BUFFER, GenericReparseBuffer.DataBuffer))
 593                 {
 594
 595                     ntStatus = STATUS_IO_REPARSE_DATA_INVALID;
 596
 597                     break;
 598                 }
 599
 600                 if( (pReparseBuffer->ReparseTag & 0x0000FFFF) != IO_REPARSE_TAG_OPENAFS_DFS)
 601                 {
 602
 603                     ntStatus = STATUS_IO_REPARSE_TAG_MISMATCH;
 604
 605                     break;
 606                 }
 607
 608                 if( RtlCompareMemory( &pReparseBuffer->ReparseGuid,
 609                                       &GUID_AFS_REPARSE_GUID,
 610                                       sizeof( GUID)) != sizeof( GUID))
 611                 {
 612
 613                     ntStatus = STATUS_REPARSE_ATTRIBUTE_CONFLICT;
 614
 615                     break;
 616                 }
 617
 618                 //
 619                 // For now deny access on this call
 620                 //
 621
 622                 ntStatus = STATUS_INVALID_PARAMETER;
 623
 624                 break;
 625             }
 626
 627             case FSCTL_DELETE_REPARSE_POINT:
 628             {
 629
 630                 REPARSE_GUID_DATA_BUFFER *pReparseBuffer = (REPARSE_GUID_DATA_BUFFER *)Irp->AssociatedIrp.SystemBuffer;
 631
 632                 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
 633                               AFS_TRACE_LEVEL_VERBOSE_2,
 634                               "AFSProcessUserFsRequest Processing FSCTL_DELETE_REPARSE_POINT request %wZ Type 0x%x Attrib 0x%x\n",
 635                               &pCcb->DirectoryCB->NameInformation.FileName,
 636                               pCcb->DirectoryCB->ObjectInformation->FileType,
 637                               pCcb->DirectoryCB->ObjectInformation->FileAttributes);
 638
 639                 //
 640                 // Check if we have the reparse entry set on the entry
 641                 //
 642
 643                 if( !BooleanFlagOn( pCcb->DirectoryCB->ObjectInformation->FileAttributes, FILE_ATTRIBUTE_REPARSE_POINT))
 644                 {
 645
 646                     ntStatus = STATUS_NOT_A_REPARSE_POINT;
 647
 648                     break;
 649                 }
 650
 651                 if( ulInputBufferLen < FIELD_OFFSET( REPARSE_GUID_DATA_BUFFER, GenericReparseBuffer.DataBuffer))
 652                 {
 653
 654                     ntStatus = STATUS_INVALID_PARAMETER;
 655
 656                     break;
 657                 }
 658
 659                 if( (pReparseBuffer->ReparseTag & 0x0000FFFF) != IO_REPARSE_TAG_OPENAFS_DFS)
 660                 {
 661
 662                     ntStatus = STATUS_IO_REPARSE_TAG_MISMATCH;
 663
 664                     break;
 665                 }
 666
 667                 if( RtlCompareMemory( &pReparseBuffer->ReparseGuid,
 668                                       &GUID_AFS_REPARSE_GUID,
 669                                       sizeof( GUID)) != sizeof( GUID))
 670                 {
 671
 672                     ntStatus = STATUS_REPARSE_ATTRIBUTE_CONFLICT;
 673
 674                     break;
 675                 }
 676
 677                 //
 678                 // For now deny access on this call
 679                 //
 680
 681                 ntStatus = STATUS_ACCESS_DENIED;
 682
 683                 break;
 684             }
 685
 686             default :
 687
 688                 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
 689                               AFS_TRACE_LEVEL_VERBOSE_2,
 690                               "AFSProcessUserFsRequest Processing default (%08lX) request\n", ulFsControlCode);
 691
 692                 ntStatus = STATUS_INVALID_DEVICE_REQUEST;
 693
 694                 break;
 695         }
 696
 697 try_exit:
 698
 699         NOTHING;
 700     }
 701
 702     return ntStatus;
 703 }
 704
 705 NTSTATUS
 706 AFSProcessShareFsCtrl( IN IRP *Irp,
 707                        IN AFSFcb *Fcb,
 708                        IN AFSCcb *Ccb)
 709 {
 710
 711     NTSTATUS ntStatus = STATUS_SUCCESS;
 712     PIO_STACK_LOCATION pIrpSp = IoGetCurrentIrpStackLocation( Irp);
 713     ULONG ulOutputBufferLen = 0, ulInputBufferLen;
 714     ULONG ulFsControlCode;
 715
 716     __Enter
 717     {
 718
 719         ulFsControlCode = pIrpSp->Parameters.FileSystemControl.FsControlCode;
 720
 721         ulOutputBufferLen = pIrpSp->Parameters.FileSystemControl.OutputBufferLength;
 722         ulInputBufferLen = pIrpSp->Parameters.FileSystemControl.InputBufferLength;
 723
 724         switch( ulFsControlCode)
 725         {
 726
 727             case FSCTL_PIPE_TRANSCEIVE:
 728             {
 729
 730                 AFSDbgLogMsg( AFS_SUBSYSTEM_PIPE_PROCESSING,
 731                               AFS_TRACE_LEVEL_VERBOSE,
 732                               "AFSProcessShareFsCtrl On pipe %wZ Class FSCTL_PIPE_TRANSCEIVE\n",
 733                               &Ccb->DirectoryCB->NameInformation.FileName);
 734
 735                 ntStatus = AFSNotifyPipeTransceive( Ccb,
 736                                                     ulInputBufferLen,
 737                                                     ulOutputBufferLen,
 738                                                     pIrpSp->Parameters.FileSystemControl.Type3InputBuffer,
 739                                                     Irp->UserBuffer,
 740                                                     (ULONG *)&Irp->IoStatus.Information);
 741
 742                 if( !NT_SUCCESS( ntStatus))
 743                 {
 744
 745                     AFSDbgLogMsg( AFS_SUBSYSTEM_PIPE_PROCESSING,
 746                                   AFS_TRACE_LEVEL_VERBOSE,
 747                                   "AFSProcessShareFsCtrl Failure on pipe %wZ Class FSCTL_PIPE_TRANSCEIVE Status %08lX\n",
 748                                   &Ccb->DirectoryCB->NameInformation.FileName,
 749                                   ntStatus);
 750                 }
 751
 752                 break;
 753             }
 754
 755             default:
 756             {
 757
 758                 if( BooleanFlagOn( Ccb->DirectoryCB->Flags, AFS_DIR_ENTRY_SERVER_SERVICE))
 759                 {
 760
 761                     //AFSPrint("AFSProcessShareFsCtrl (%08lX) For srvsvc input %08lX output %08lX\n",
 762                     //                                                            ulFsControlCode,
 763                     //                                                            ulInputBufferLen,
 764                     //                                                            ulOutputBufferLen);
 765                 }
 766                 else if( BooleanFlagOn( Ccb->DirectoryCB->Flags, AFS_DIR_ENTRY_WORKSTATION_SERVICE))
 767                 {
 768
 769                     //AFSPrint("AFSProcessShareFsCtrl (%08lX) For wkssvc input %08lX output %08lX\n",
 770                     //                                                            ulFsControlCode,
 771                     //                                                            ulInputBufferLen,
 772                     //                                                            ulOutputBufferLen);
 773                 }
 774                 else
 775                 {
 776
 777                     //AFSPrint("AFSProcessShareFsCtrl (%08lX) For IPC$ input %08lX output %08lX\n",
 778                     //                                                            ulFsControlCode,
 779                     //                                                            ulInputBufferLen,
 780                     //                                                            ulOutputBufferLen);
 781                 }
 782
 783                 break;
 784             }
 785         }
 786     }
 787
 788     return ntStatus;
 789 }