src/WINNT/afsrdr/kernel/lib/AFSFileInfo.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: AFSFileInfo.cpp
  37 //
  38
  39 #include "AFSCommon.h"
  40
  41 //
  42 // Function: AFSQueryFileInfo
  43 //
  44 // Description:
  45 //
  46 //      This function is the dispatch handler for the IRP_MJ_QUERY_FILE_INFORMATION request
  47 //
  48 // Return:
  49 //
  50 //      A status is returned for the function
  51 //
  52
  53 NTSTATUS
  54 AFSQueryFileInfo( IN PDEVICE_OBJECT LibDeviceObject,
  55                   IN PIRP Irp)
  56 {
  57
  58     NTSTATUS ntStatus = STATUS_SUCCESS;
  59     AFSDeviceExt *pDeviceExt = (AFSDeviceExt *)AFSRDRDeviceObject->DeviceExtension;
  60     ULONG ulRequestType = 0;
  61     IO_STACK_LOCATION *pIrpSp = IoGetCurrentIrpStackLocation( Irp);
  62     AFSFcb *pFcb = NULL;
  63     AFSCcb *pCcb = NULL;
  64     PFILE_OBJECT pFileObject;
  65     BOOLEAN bReleaseMain = FALSE;
  66     LONG lLength;
  67     FILE_INFORMATION_CLASS stFileInformationClass;
  68     PVOID pBuffer;
  69
  70     __try
  71     {
  72
  73         //
  74         // Determine the type of request this request is
  75         //
  76
  77         pFcb = (AFSFcb *)pIrpSp->FileObject->FsContext;
  78
  79         pCcb = (AFSCcb *)pIrpSp->FileObject->FsContext2;
  80
  81         if( pFcb == NULL)
  82         {
  83
  84             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
  85                           AFS_TRACE_LEVEL_ERROR,
  86                           "AFSQueryFileInfo Attempted access (%08lX) when pFcb == NULL\n",
  87                           Irp);
  88
  89             try_return( ntStatus = STATUS_INVALID_DEVICE_REQUEST);
  90         }
  91
  92         lLength = (LONG)pIrpSp->Parameters.QueryFile.Length;
  93         stFileInformationClass = pIrpSp->Parameters.QueryFile.FileInformationClass;
  94         pBuffer = Irp->AssociatedIrp.SystemBuffer;
  95
  96         //
  97         // Grab the main shared right off the bat
  98         //
  99
 100         AFSDbgLogMsg( AFS_SUBSYSTEM_LOCK_PROCESSING,
 101                       AFS_TRACE_LEVEL_VERBOSE,
 102                       "AFSQueryFileInfo Acquiring Fcb lock %08lX SHARED %08lX\n",
 103                       &pFcb->NPFcb->Resource,
 104                       PsGetCurrentThread());
 105
 106         AFSAcquireShared( &pFcb->NPFcb->Resource,
 107                           TRUE);
 108
 109         bReleaseMain = TRUE;
 110
 111         //
 112         // Don't allow requests against IOCtl nodes
 113         //
 114
 115         if( pFcb->Header.NodeTypeCode == AFS_SPECIAL_SHARE_FCB)
 116         {
 117
 118             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
 119                           AFS_TRACE_LEVEL_VERBOSE,
 120                           "AFSQueryFileInfo Processing request against SpecialShare Fcb\n");
 121
 122             ntStatus = AFSProcessShareQueryInfo( Irp,
 123                                                  pFcb,
 124                                                  pCcb);
 125
 126             try_return( ntStatus);
 127         }
 128         else if( pFcb->Header.NodeTypeCode == AFS_IOCTL_FCB)
 129         {
 130             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
 131                           AFS_TRACE_LEVEL_VERBOSE,
 132                           "AFSQueryFileInfo request against PIOCtl Fcb\n");
 133
 134             ntStatus = AFSProcessPIOCtlQueryInfo( Irp,
 135                                                   pFcb,
 136                                                   pCcb,
 137                                                   &lLength);
 138
 139             try_return( ntStatus);
 140         }
 141
 142         //
 143         // Process the request
 144         //
 145
 146         switch( stFileInformationClass)
 147         {
 148
 149             case FileAllInformation:
 150             {
 151
 152                 PFILE_ALL_INFORMATION pAllInfo;
 153
 154                 //
 155                 //  For the all information class we'll typecast a local
 156                 //  pointer to the output buffer and then call the
 157                 //  individual routines to fill in the buffer.
 158                 //
 159
 160                 pAllInfo = (PFILE_ALL_INFORMATION)pBuffer;
 161
 162                 ntStatus = AFSQueryBasicInfo( Irp,
 163                                               pCcb->DirectoryCB,
 164                                               &pAllInfo->BasicInformation,
 165                                               &lLength);
 166
 167                 if( !NT_SUCCESS( ntStatus))
 168                 {
 169
 170                     try_return( ntStatus);
 171                 }
 172
 173                 ntStatus = AFSQueryStandardInfo( Irp,
 174                                                  pCcb->DirectoryCB,
 175                                                  &pAllInfo->StandardInformation,
 176                                                  &lLength);
 177
 178                 if( !NT_SUCCESS( ntStatus))
 179                 {
 180
 181                     try_return( ntStatus);
 182                 }
 183
 184                 ntStatus = AFSQueryInternalInfo( Irp,
 185                                                  pFcb,
 186                                                  &pAllInfo->InternalInformation,
 187                                                  &lLength);
 188
 189                 if( !NT_SUCCESS( ntStatus))
 190                 {
 191
 192                     try_return( ntStatus);
 193                 }
 194
 195                 ntStatus = AFSQueryEaInfo( Irp,
 196                                            pCcb->DirectoryCB,
 197                                            &pAllInfo->EaInformation,
 198                                            &lLength);
 199
 200                 if( !NT_SUCCESS( ntStatus))
 201                 {
 202
 203                     try_return( ntStatus);
 204                 }
 205
 206                 ntStatus = AFSQueryAccess( Irp,
 207                                            pFcb,
 208                                            &pAllInfo->AccessInformation,
 209                                            &lLength);
 210
 211                 if( !NT_SUCCESS( ntStatus))
 212                 {
 213
 214                     try_return( ntStatus);
 215                 }
 216
 217                 ntStatus = AFSQueryPositionInfo( Irp,
 218                                                  pFcb,
 219                                                  &pAllInfo->PositionInformation,
 220                                                  &lLength);
 221
 222                 if( !NT_SUCCESS( ntStatus))
 223                 {
 224
 225                     try_return( ntStatus);
 226                 }
 227
 228                 ntStatus = AFSQueryMode( Irp,
 229                                          pFcb,
 230                                          &pAllInfo->ModeInformation,
 231                                          &lLength);
 232
 233                 if( !NT_SUCCESS( ntStatus))
 234                 {
 235
 236                     try_return( ntStatus);
 237                 }
 238
 239                 ntStatus = AFSQueryAlignment( Irp,
 240                                               pFcb,
 241                                               &pAllInfo->AlignmentInformation,
 242                                               &lLength);
 243
 244                 if( !NT_SUCCESS( ntStatus))
 245                 {
 246
 247                     try_return( ntStatus);
 248                 }
 249
 250                 ntStatus = AFSQueryNameInfo( Irp,
 251                                              pCcb->DirectoryCB,
 252                                              &pAllInfo->NameInformation,
 253                                              &lLength);
 254
 255                 if( !NT_SUCCESS( ntStatus))
 256                 {
 257
 258                     try_return( ntStatus);
 259                 }
 260
 261                 break;
 262             }
 263
 264             case FileBasicInformation:
 265             {
 266
 267                 ntStatus = AFSQueryBasicInfo( Irp,
 268                                               pCcb->DirectoryCB,
 269                                               (PFILE_BASIC_INFORMATION)pBuffer,
 270                                               &lLength);
 271
 272                 break;
 273             }
 274
 275             case FileStandardInformation:
 276             {
 277
 278                 ntStatus = AFSQueryStandardInfo( Irp,
 279                                                  pCcb->DirectoryCB,
 280                                                  (PFILE_STANDARD_INFORMATION)pBuffer,
 281                                                  &lLength);
 282
 283                 break;
 284             }
 285
 286             case FileInternalInformation:
 287             {
 288
 289                 ntStatus = AFSQueryInternalInfo( Irp,
 290                                                  pFcb,
 291                                                  (PFILE_INTERNAL_INFORMATION)pBuffer,
 292                                                  &lLength);
 293
 294                 break;
 295             }
 296
 297             case FileEaInformation:
 298             {
 299
 300                 ntStatus = AFSQueryEaInfo( Irp,
 301                                            pCcb->DirectoryCB,
 302                                            (PFILE_EA_INFORMATION)pBuffer,
 303                                            &lLength);
 304
 305                 break;
 306             }
 307
 308             case FilePositionInformation:
 309             {
 310
 311                 ntStatus = AFSQueryPositionInfo( Irp,
 312                                       pFcb,
 313                                       (PFILE_POSITION_INFORMATION)pBuffer,
 314                                       &lLength);
 315
 316                 break;
 317             }
 318
 319             case FileNameInformation:
 320             {
 321
 322                 ntStatus = AFSQueryNameInfo( Irp,
 323                                   pCcb->DirectoryCB,
 324                                   (PFILE_NAME_INFORMATION)pBuffer,
 325                                   &lLength);
 326
 327                 break;
 328             }
 329
 330             case FileAlternateNameInformation:
 331             {
 332
 333                 ntStatus = AFSQueryShortNameInfo( Irp,
 334                                        pCcb->DirectoryCB,
 335                                        (PFILE_NAME_INFORMATION)pBuffer,
 336                                        &lLength);
 337
 338                 break;
 339             }
 340
 341             case FileNetworkOpenInformation:
 342             {
 343
 344                 ntStatus = AFSQueryNetworkInfo( Irp,
 345                                      pCcb->DirectoryCB,
 346                                      (PFILE_NETWORK_OPEN_INFORMATION)pBuffer,
 347                                      &lLength);
 348
 349                 break;
 350             }
 351
 352             case FileStreamInformation:
 353             {
 354
 355                 ntStatus = AFSQueryStreamInfo( Irp,
 356                                                pCcb->DirectoryCB,
 357                                                (FILE_STREAM_INFORMATION *)pBuffer,
 358                                                &lLength);
 359
 360                 break;
 361             }
 362
 363
 364             case FileAttributeTagInformation:
 365             {
 366
 367                 ntStatus = AFSQueryAttribTagInfo( Irp,
 368                                                   pCcb->DirectoryCB,
 369                                                   (FILE_ATTRIBUTE_TAG_INFORMATION *)pBuffer,
 370                                                   &lLength);
 371
 372                 break;
 373             }
 374
 375             case FileRemoteProtocolInformation:
 376             {
 377
 378                     ntStatus = AFSQueryRemoteProtocolInfo( Irp,
 379                                                            pCcb->DirectoryCB,
 380                                                            (FILE_REMOTE_PROTOCOL_INFORMATION *)pBuffer,
 381                                                            &lLength);
 382
 383                 break;
 384             }
 385
 386             case FileNetworkPhysicalNameInformation:
 387             {
 388
 389                 ntStatus = AFSQueryPhysicalNameInfo( Irp,
 390                                                      pCcb->DirectoryCB,
 391                                                      (FILE_NETWORK_PHYSICAL_NAME_INFORMATION *)pBuffer,
 392                                                      &lLength);
 393
 394                 break;
 395             }
 396
 397             default:
 398             {
 399                 ntStatus = STATUS_INVALID_PARAMETER;
 400                 break;
 401             }
 402         }
 403
 404 try_exit:
 405
 406         Irp->IoStatus.Information = pIrpSp->Parameters.QueryFile.Length - lLength;
 407
 408         if( bReleaseMain)
 409         {
 410
 411             AFSReleaseResource( &pFcb->NPFcb->Resource);
 412         }
 413
 414         if( !NT_SUCCESS( ntStatus) &&
 415             ntStatus != STATUS_INVALID_PARAMETER &&
 416             ntStatus != STATUS_BUFFER_OVERFLOW)
 417         {
 418
 419             if( pCcb != NULL &&
 420                 pCcb->DirectoryCB != NULL)
 421             {
 422
 423                 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
 424                               AFS_TRACE_LEVEL_ERROR,
 425                               "AFSQueryFileInfo Failed to process request for %wZ FID %08lX-%08lX-%08lX-%08lX Status %08lX\n",
 426                               &pCcb->DirectoryCB->NameInformation.FileName,
 427                               pCcb->DirectoryCB->ObjectInformation->FileId.Cell,
 428                               pCcb->DirectoryCB->ObjectInformation->FileId.Volume,
 429                               pCcb->DirectoryCB->ObjectInformation->FileId.Vnode,
 430                               pCcb->DirectoryCB->ObjectInformation->FileId.Unique,
 431                               ntStatus);
 432             }
 433         }
 434     }
 435     __except( AFSExceptionFilter( GetExceptionCode(), GetExceptionInformation()) )
 436     {
 437
 438         AFSDbgLogMsg( 0,
 439                       0,
 440                       "EXCEPTION - AFSQueryFileInfo\n");
 441
 442         ntStatus = STATUS_UNSUCCESSFUL;
 443
 444         if( bReleaseMain)
 445         {
 446
 447             AFSReleaseResource( &pFcb->NPFcb->Resource);
 448         }
 449     }
 450
 451     AFSCompleteRequest( Irp,
 452                         ntStatus);
 453
 454     return ntStatus;
 455 }
 456
 457 //
 458 // Function: AFSSetFileInfo
 459 //
 460 // Description:
 461 //
 462 //      This function is the dispatch handler for the IRP_MJ_SET_FILE_INFORMATION request
 463 //
 464 // Return:
 465 //
 466 //      A status is returned for the function
 467 //
 468
 469 NTSTATUS
 470 AFSSetFileInfo( IN PDEVICE_OBJECT LibDeviceObject,
 471                 IN PIRP Irp)
 472 {
 473
 474     NTSTATUS ntStatus = STATUS_SUCCESS;
 475     AFSDeviceExt *pDeviceExt = (AFSDeviceExt *)AFSRDRDeviceObject->DeviceExtension;
 476     IO_STACK_LOCATION *pIrpSp = IoGetCurrentIrpStackLocation( Irp);
 477     AFSFcb *pFcb = NULL;
 478     AFSCcb *pCcb = NULL;
 479     BOOLEAN bCompleteRequest = TRUE;
 480     FILE_INFORMATION_CLASS FileInformationClass;
 481     BOOLEAN bCanQueueRequest = FALSE;
 482     PFILE_OBJECT pFileObject = NULL;
 483     BOOLEAN bReleaseMain = FALSE;
 484     BOOLEAN bUpdateFileInfo = FALSE;
 485     AFSFileID stParentFileId;
 486
 487     __try
 488     {
 489
 490         pFileObject = pIrpSp->FileObject;
 491
 492         pFcb = (AFSFcb *)pFileObject->FsContext;
 493         pCcb = (AFSCcb *)pFileObject->FsContext2;
 494
 495         if( pFcb == NULL)
 496         {
 497
 498             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
 499                           AFS_TRACE_LEVEL_ERROR,
 500                           "AFSSetFileInfo Attempted access (%08lX) when pFcb == NULL\n",
 501                           Irp);
 502
 503             try_return( ntStatus = STATUS_INVALID_DEVICE_REQUEST);
 504         }
 505
 506         bCanQueueRequest = !(IoIsOperationSynchronous( Irp) | (KeGetCurrentIrql() != PASSIVE_LEVEL));
 507         FileInformationClass = pIrpSp->Parameters.SetFile.FileInformationClass;
 508
 509         //
 510         // Grab the Fcb EXCL
 511         //
 512
 513         AFSDbgLogMsg( AFS_SUBSYSTEM_LOCK_PROCESSING,
 514                       AFS_TRACE_LEVEL_VERBOSE,
 515                       "AFSSetFileInfo Acquiring Fcb lock %08lX EXCL %08lX\n",
 516                       &pFcb->NPFcb->Resource,
 517                       PsGetCurrentThread());
 518
 519         AFSAcquireExcl( &pFcb->NPFcb->Resource,
 520                         TRUE);
 521
 522         bReleaseMain = TRUE;
 523
 524         //
 525         // Don't allow requests against IOCtl nodes
 526         //
 527
 528         if( pFcb->Header.NodeTypeCode == AFS_IOCTL_FCB)
 529         {
 530
 531             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
 532                           AFS_TRACE_LEVEL_ERROR,
 533                           "AFSSetFileInfo Failing request against PIOCtl Fcb\n");
 534
 535             try_return( ntStatus = STATUS_INVALID_DEVICE_REQUEST);
 536         }
 537         else if( pFcb->Header.NodeTypeCode == AFS_SPECIAL_SHARE_FCB)
 538         {
 539
 540             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
 541                           AFS_TRACE_LEVEL_VERBOSE,
 542                           "AFSSetFileInfo Processing request against SpecialShare Fcb\n");
 543
 544             ntStatus = AFSProcessShareSetInfo( Irp,
 545                                                pFcb,
 546                                                pCcb);
 547
 548             try_return( ntStatus);
 549         }
 550
 551         if( BooleanFlagOn( pFcb->ObjectInformation->VolumeCB->VolumeInformation.Characteristics, FILE_READ_ONLY_DEVICE))
 552         {
 553
 554             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
 555                           AFS_TRACE_LEVEL_ERROR,
 556                           "AFSSetFileInfo Request failed due to read only volume\n",
 557                           Irp);
 558
 559             try_return( ntStatus = STATUS_ACCESS_DENIED);
 560         }
 561
 562         //
 563         // Ensure rename operations are synchronous
 564         //
 565
 566         if( FileInformationClass == FileRenameInformation)
 567         {
 568
 569             bCanQueueRequest = FALSE;
 570         }
 571
 572         //
 573         // Store away the parent fid
 574         //
 575
 576         RtlZeroMemory( &stParentFileId,
 577                        sizeof( AFSFileID));
 578
 579         if( pFcb->ObjectInformation->ParentObjectInformation != NULL)
 580         {
 581             stParentFileId = pFcb->ObjectInformation->ParentObjectInformation->FileId;
 582         }
 583
 584         //
 585         // Process the request
 586         //
 587
 588         switch( FileInformationClass)
 589         {
 590
 591             case FileBasicInformation:
 592             {
 593
 594                 bUpdateFileInfo = TRUE;
 595
 596                 ntStatus = AFSSetBasicInfo( Irp,
 597                                             pCcb->DirectoryCB);
 598
 599                 break;
 600             }
 601
 602             case FileDispositionInformation:
 603             {
 604
 605                 ntStatus = AFSSetDispositionInfo( Irp,
 606                                                   pCcb->DirectoryCB);
 607
 608                 break;
 609             }
 610
 611             case FileRenameInformation:
 612             {
 613
 614                 ntStatus = AFSSetRenameInfo( Irp);
 615
 616                 break;
 617             }
 618
 619             case FilePositionInformation:
 620             {
 621
 622                 ntStatus = AFSSetPositionInfo( Irp,
 623                                                pCcb->DirectoryCB);
 624
 625                 break;
 626             }
 627
 628             case FileLinkInformation:
 629             {
 630
 631                 ntStatus = STATUS_INVALID_DEVICE_REQUEST;
 632
 633                 break;
 634             }
 635
 636             case FileAllocationInformation:
 637             {
 638
 639                 ntStatus = AFSSetAllocationInfo( Irp,
 640                                                  pCcb->DirectoryCB);
 641
 642                 break;
 643             }
 644
 645             case FileEndOfFileInformation:
 646             {
 647
 648                 ntStatus = AFSSetEndOfFileInfo( Irp,
 649                                                 pCcb->DirectoryCB);
 650
 651                 break;
 652             }
 653
 654             default:
 655
 656                 ntStatus = STATUS_INVALID_PARAMETER;
 657
 658                 break;
 659         }
 660
 661 try_exit:
 662
 663         if( bReleaseMain)
 664         {
 665
 666             AFSReleaseResource( &pFcb->NPFcb->Resource);
 667         }
 668
 669         if( NT_SUCCESS( ntStatus) &&
 670             bUpdateFileInfo)
 671         {
 672
 673             ntStatus = AFSUpdateFileInformation( &stParentFileId,
 674                                                  pFcb->ObjectInformation,
 675                                                  &pFcb->AuthGroup);
 676
 677             if( !NT_SUCCESS( ntStatus))
 678             {
 679
 680                 AFSAcquireExcl( &pFcb->NPFcb->Resource,
 681                                 TRUE);
 682
 683                 //
 684                 // Unwind the update and fail the request
 685                 //
 686
 687                 AFSUnwindFileInfo( pFcb,
 688                                    pCcb);
 689
 690                 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
 691                               AFS_TRACE_LEVEL_ERROR,
 692                               "AFSSetFileInfo Failed to send file info update to service request for %wZ FID %08lX-%08lX-%08lX-%08lX Status %08lX\n",
 693                               &pCcb->DirectoryCB->NameInformation.FileName,
 694                               pCcb->DirectoryCB->ObjectInformation->FileId.Cell,
 695                               pCcb->DirectoryCB->ObjectInformation->FileId.Volume,
 696                               pCcb->DirectoryCB->ObjectInformation->FileId.Vnode,
 697                               pCcb->DirectoryCB->ObjectInformation->FileId.Unique,
 698                               ntStatus);
 699
 700                 AFSReleaseResource( &pFcb->NPFcb->Resource);
 701             }
 702         }
 703
 704         if( !NT_SUCCESS( ntStatus))
 705         {
 706
 707             if( pCcb != NULL &&
 708                 pCcb->DirectoryCB != NULL)
 709             {
 710
 711                 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
 712                               AFS_TRACE_LEVEL_ERROR,
 713                               "AFSSetFileInfo Failed to process request for %wZ FID %08lX-%08lX-%08lX-%08lX Status %08lX\n",
 714                               &pCcb->DirectoryCB->NameInformation.FileName,
 715                               pCcb->DirectoryCB->ObjectInformation->FileId.Cell,
 716                               pCcb->DirectoryCB->ObjectInformation->FileId.Volume,
 717                               pCcb->DirectoryCB->ObjectInformation->FileId.Vnode,
 718                               pCcb->DirectoryCB->ObjectInformation->FileId.Unique,
 719                               ntStatus);
 720             }
 721         }
 722     }
 723     __except( AFSExceptionFilter( GetExceptionCode(), GetExceptionInformation()) )
 724     {
 725
 726         AFSDbgLogMsg( 0,
 727                       0,
 728                       "EXCEPTION - AFSSetFileInfo\n");
 729
 730         ntStatus = STATUS_UNSUCCESSFUL;
 731     }
 732
 733     AFSCompleteRequest( Irp,
 734                         ntStatus);
 735
 736     return ntStatus;
 737 }
 738
 739 //
 740 // Function: AFSQueryBasicInfo
 741 //
 742 // Description:
 743 //
 744 //      This function is the handler for the query basic information request
 745 //
 746 // Return:
 747 //
 748 //      A status is returned for the function
 749 //
 750
 751 NTSTATUS
 752 AFSQueryBasicInfo( IN PIRP Irp,
 753                    IN AFSDirectoryCB *DirectoryCB,
 754                    IN OUT PFILE_BASIC_INFORMATION Buffer,
 755                    IN OUT PLONG Length)
 756 {
 757     NTSTATUS ntStatus = STATUS_SUCCESS;
 758     AFSDeviceExt *pDeviceExt = (AFSDeviceExt *)AFSRDRDeviceObject->DeviceExtension;
 759     ULONG ulFileAttribs = 0;
 760     AFSFcb *pFcb = NULL;
 761     AFSCcb *pCcb = NULL;
 762     IO_STACK_LOCATION *pIrpSp = IoGetCurrentIrpStackLocation( Irp);
 763     AFSFileInfoCB stFileInfo;
 764     AFSDirectoryCB *pParentDirectoryCB = NULL;
 765     UNICODE_STRING uniParentPath;
 766
 767     if( *Length >= sizeof( FILE_BASIC_INFORMATION))
 768     {
 769
 770         RtlZeroMemory( Buffer,
 771                        *Length);
 772
 773         ulFileAttribs = DirectoryCB->ObjectInformation->FileAttributes;
 774
 775         pFcb = (AFSFcb *)pIrpSp->FileObject->FsContext;
 776         pCcb = (AFSCcb *)pIrpSp->FileObject->FsContext2;
 777
 778         if( DirectoryCB->ObjectInformation->FileType == AFS_FILE_TYPE_SYMLINK)
 779         {
 780
 781             pParentDirectoryCB = AFSGetParentEntry( pCcb->NameArray);
 782
 783             AFSRetrieveParentPath( &pCcb->FullFileName,
 784                                    &uniParentPath);
 785
 786             RtlZeroMemory( &stFileInfo,
 787                            sizeof( AFSFileInfoCB));
 788
 789             //
 790             // Can't hold the Fcb while evaluating the path, leads to lock inversion
 791             //
 792
 793             AFSReleaseResource( &pFcb->NPFcb->Resource);
 794
 795             if( NT_SUCCESS( AFSRetrieveFileAttributes( pParentDirectoryCB,
 796                                                        DirectoryCB,
 797                                                        &uniParentPath,
 798                                                        NULL,
 799                                                        &stFileInfo)))
 800             {
 801                 ulFileAttribs = stFileInfo.FileAttributes;
 802
 803                 ulFileAttribs |= FILE_ATTRIBUTE_REPARSE_POINT;
 804             }
 805
 806             AFSAcquireShared( &pFcb->NPFcb->Resource,
 807                               TRUE);
 808         }
 809
 810
 811         AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
 812                       AFS_TRACE_LEVEL_VERBOSE_2,
 813                       "AFSQueryBasicInfo %wZ Type 0x%x Attrib 0x%x -> 0x%x\n",
 814                       &pCcb->DirectoryCB->NameInformation.FileName,
 815                       pCcb->DirectoryCB->ObjectInformation->FileType,
 816                       pCcb->DirectoryCB->ObjectInformation->FileAttributes,
 817                       ulFileAttribs);
 818
 819         Buffer->CreationTime = DirectoryCB->ObjectInformation->CreationTime;
 820         Buffer->LastAccessTime = DirectoryCB->ObjectInformation->LastAccessTime;
 821         Buffer->LastWriteTime = DirectoryCB->ObjectInformation->LastWriteTime;
 822         Buffer->ChangeTime = DirectoryCB->ObjectInformation->ChangeTime;
 823         Buffer->FileAttributes = ulFileAttribs;
 824
 825         if( DirectoryCB->NameInformation.FileName.Buffer[ 0] == L'.' &&
 826             BooleanFlagOn( pDeviceExt->DeviceFlags, AFS_DEVICE_FLAG_HIDE_DOT_NAMES))
 827         {
 828
 829             if ( Buffer->FileAttributes != FILE_ATTRIBUTE_NORMAL)
 830             {
 831                 Buffer->FileAttributes |= FILE_ATTRIBUTE_HIDDEN;
 832             }
 833             else
 834             {
 835                 Buffer->FileAttributes = FILE_ATTRIBUTE_HIDDEN;
 836             }
 837         }
 838
 839         *Length -= sizeof( FILE_BASIC_INFORMATION);
 840     }
 841     else
 842     {
 843
 844         ntStatus = STATUS_BUFFER_TOO_SMALL;
 845     }
 846
 847     return ntStatus;
 848 }
 849
 850 NTSTATUS
 851 AFSQueryStandardInfo( IN PIRP Irp,
 852                       IN AFSDirectoryCB *DirectoryCB,
 853                       IN OUT PFILE_STANDARD_INFORMATION Buffer,
 854                       IN OUT PLONG Length)
 855 {
 856
 857     NTSTATUS ntStatus = STATUS_SUCCESS;
 858     AFSFcb *pFcb = NULL;
 859     AFSCcb *pCcb = NULL;
 860     PIO_STACK_LOCATION pIrpSp = IoGetCurrentIrpStackLocation( Irp);
 861     AFSFileInfoCB stFileInfo;
 862     AFSDirectoryCB *pParentDirectoryCB = NULL;
 863     UNICODE_STRING uniParentPath;
 864     ULONG ulFileAttribs = 0;
 865
 866     if( *Length >= sizeof( FILE_STANDARD_INFORMATION))
 867     {
 868
 869         pFcb = (AFSFcb *)pIrpSp->FileObject->FsContext;
 870         pCcb = (AFSCcb *)pIrpSp->FileObject->FsContext2;
 871
 872         RtlZeroMemory( Buffer,
 873                        *Length);
 874
 875         Buffer->NumberOfLinks = 1;
 876         Buffer->DeletePending = BooleanFlagOn( pCcb->DirectoryCB->Flags, AFS_DIR_ENTRY_PENDING_DELETE);
 877
 878         Buffer->AllocationSize.QuadPart = (ULONGLONG)((DirectoryCB->ObjectInformation->AllocationSize.QuadPart/PAGE_SIZE) + 1) * PAGE_SIZE;
 879
 880         Buffer->EndOfFile = DirectoryCB->ObjectInformation->EndOfFile;
 881
 882         ulFileAttribs = DirectoryCB->ObjectInformation->FileAttributes;
 883
 884         if( DirectoryCB->ObjectInformation->FileType == AFS_FILE_TYPE_SYMLINK)
 885         {
 886
 887             pParentDirectoryCB = AFSGetParentEntry( pCcb->NameArray);
 888
 889             AFSRetrieveParentPath( &pCcb->FullFileName,
 890                                    &uniParentPath);
 891
 892             RtlZeroMemory( &stFileInfo,
 893                            sizeof( AFSFileInfoCB));
 894
 895             //
 896             // Can't hold the Fcb while evaluating the path, leads to lock inversion
 897             //
 898
 899             AFSReleaseResource( &pFcb->NPFcb->Resource);
 900
 901             if( NT_SUCCESS( AFSRetrieveFileAttributes( pParentDirectoryCB,
 902                                                        DirectoryCB,
 903                                                        &uniParentPath,
 904                                                        NULL,
 905                                                        &stFileInfo)))
 906             {
 907                 ulFileAttribs = stFileInfo.FileAttributes;
 908             }
 909
 910             AFSAcquireShared( &pFcb->NPFcb->Resource,
 911                               TRUE);
 912         }
 913
 914         AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
 915                       AFS_TRACE_LEVEL_VERBOSE_2,
 916                       "AFSQueryStandardInfo %wZ Type 0x%x Attrib 0x%x -> 0x%x\n",
 917                       &pCcb->DirectoryCB->NameInformation.FileName,
 918                       pCcb->DirectoryCB->ObjectInformation->FileType,
 919                       pCcb->DirectoryCB->ObjectInformation->FileAttributes,
 920                       ulFileAttribs);
 921
 922         Buffer->Directory = BooleanFlagOn( ulFileAttribs, FILE_ATTRIBUTE_DIRECTORY);
 923
 924         *Length -= sizeof( FILE_STANDARD_INFORMATION);
 925     }
 926     else
 927     {
 928
 929         ntStatus = STATUS_BUFFER_TOO_SMALL;
 930     }
 931
 932     return ntStatus;
 933 }
 934
 935 NTSTATUS
 936 AFSQueryInternalInfo( IN PIRP Irp,
 937                       IN AFSFcb *Fcb,
 938                       IN OUT PFILE_INTERNAL_INFORMATION Buffer,
 939                       IN OUT PLONG Length)
 940 {
 941
 942     NTSTATUS ntStatus = STATUS_SUCCESS;
 943
 944     if( *Length >= sizeof( FILE_INTERNAL_INFORMATION))
 945     {
 946
 947         Buffer->IndexNumber.HighPart = Fcb->ObjectInformation->FileId.Volume;
 948
 949         Buffer->IndexNumber.LowPart = Fcb->ObjectInformation->FileId.Vnode;
 950
 951         *Length -= sizeof( FILE_INTERNAL_INFORMATION);
 952     }
 953     else
 954     {
 955
 956         ntStatus = STATUS_BUFFER_TOO_SMALL;
 957     }
 958
 959     return ntStatus;
 960 }
 961
 962 NTSTATUS
 963 AFSQueryEaInfo( IN PIRP Irp,
 964                 IN AFSDirectoryCB *DirectoryCB,
 965                 IN OUT PFILE_EA_INFORMATION Buffer,
 966                 IN OUT PLONG Length)
 967 {
 968
 969     NTSTATUS ntStatus = STATUS_SUCCESS;
 970
 971     RtlZeroMemory( Buffer,
 972                    *Length);
 973
 974     if( *Length >= sizeof( FILE_EA_INFORMATION))
 975     {
 976
 977         Buffer->EaSize = 0;
 978
 979         *Length -= sizeof( FILE_EA_INFORMATION);
 980     }
 981     else
 982     {
 983
 984         ntStatus = STATUS_BUFFER_TOO_SMALL;
 985     }
 986
 987     return ntStatus;
 988 }
 989
 990 NTSTATUS
 991 AFSQueryPositionInfo( IN PIRP Irp,
 992                       IN AFSFcb *Fcb,
 993                       IN OUT PFILE_POSITION_INFORMATION Buffer,
 994                       IN OUT PLONG Length)
 995 {
 996
 997     NTSTATUS ntStatus = STATUS_SUCCESS;
 998     PIO_STACK_LOCATION pIrpSp = IoGetCurrentIrpStackLocation( Irp);
 999
1000     if( *Length >= sizeof( FILE_POSITION_INFORMATION))
1001     {
1002
1003         RtlZeroMemory( Buffer,
1004                        *Length);
1005
1006         Buffer->CurrentByteOffset.QuadPart = pIrpSp->FileObject->CurrentByteOffset.QuadPart;
1007
1008         *Length -= sizeof( FILE_POSITION_INFORMATION);
1009     }
1010     else
1011     {
1012
1013         ntStatus = STATUS_BUFFER_TOO_SMALL;
1014     }
1015
1016     return ntStatus;
1017 }
1018
1019 NTSTATUS
1020 AFSQueryAccess( IN PIRP Irp,
1021                 IN AFSFcb *Fcb,
1022                 IN OUT PFILE_ACCESS_INFORMATION Buffer,
1023                 IN OUT PLONG Length)
1024 {
1025
1026     NTSTATUS ntStatus = STATUS_SUCCESS;
1027
1028     if( *Length >= sizeof( FILE_ACCESS_INFORMATION))
1029     {
1030
1031         RtlZeroMemory( Buffer,
1032                        *Length);
1033
1034         Buffer->AccessFlags = 0;
1035
1036         *Length -= sizeof( FILE_ACCESS_INFORMATION);
1037     }
1038     else
1039     {
1040
1041         ntStatus = STATUS_BUFFER_TOO_SMALL;
1042     }
1043
1044     return ntStatus;
1045 }
1046
1047 NTSTATUS
1048 AFSQueryMode( IN PIRP Irp,
1049               IN AFSFcb *Fcb,
1050               IN OUT PFILE_MODE_INFORMATION Buffer,
1051               IN OUT PLONG Length)
1052 {
1053
1054     NTSTATUS ntStatus = STATUS_SUCCESS;
1055
1056     if( *Length >= sizeof( FILE_MODE_INFORMATION))
1057     {
1058
1059         RtlZeroMemory( Buffer,
1060                        *Length);
1061
1062         Buffer->Mode = 0;
1063
1064         *Length -= sizeof( FILE_MODE_INFORMATION);
1065     }
1066     else
1067     {
1068
1069         ntStatus = STATUS_BUFFER_TOO_SMALL;
1070     }
1071
1072     return ntStatus;
1073 }
1074
1075 NTSTATUS
1076 AFSQueryAlignment( IN PIRP Irp,
1077                    IN AFSFcb *Fcb,
1078                    IN OUT PFILE_ALIGNMENT_INFORMATION Buffer,
1079                    IN OUT PLONG Length)
1080 {
1081
1082     NTSTATUS ntStatus = STATUS_SUCCESS;
1083
1084     if( *Length >= sizeof( FILE_ALIGNMENT_INFORMATION))
1085     {
1086
1087         RtlZeroMemory( Buffer,
1088                        *Length);
1089
1090         Buffer->AlignmentRequirement = 1;
1091
1092         *Length -= sizeof( FILE_ALIGNMENT_INFORMATION);
1093     }
1094     else
1095     {
1096
1097         ntStatus = STATUS_BUFFER_TOO_SMALL;
1098     }
1099
1100     return ntStatus;
1101 }
1102
1103 NTSTATUS
1104 AFSQueryNameInfo( IN PIRP Irp,
1105                   IN AFSDirectoryCB *DirectoryCB,
1106                   IN OUT PFILE_NAME_INFORMATION Buffer,
1107                   IN OUT PLONG Length)
1108 {
1109
1110     NTSTATUS ntStatus = STATUS_SUCCESS;
1111     ULONG ulCopyLength = 0;
1112     ULONG cchCopied = 0;
1113     AFSFcb *pFcb = NULL;
1114     AFSCcb *pCcb = NULL;
1115     IO_STACK_LOCATION *pIrpSp = IoGetCurrentIrpStackLocation( Irp);
1116     BOOLEAN bAddLeadingSlash = FALSE;
1117     BOOLEAN bAddTrailingSlash = FALSE;
1118     USHORT usFullNameLength = 0;
1119
1120     pFcb = (AFSFcb *)pIrpSp->FileObject->FsContext;
1121
1122     pCcb = (AFSCcb *)pIrpSp->FileObject->FsContext2;
1123
1124     if( *Length >= FIELD_OFFSET( FILE_NAME_INFORMATION, FileName))
1125     {
1126
1127         RtlZeroMemory( Buffer,
1128                        *Length);
1129
1130         if( pCcb->FullFileName.Length == 0 ||
1131             pCcb->FullFileName.Buffer[ 0] != L'\\')
1132         {
1133             bAddLeadingSlash = TRUE;
1134         }
1135
1136         if( pFcb->ObjectInformation->FileType == AFS_FILE_TYPE_DIRECTORY &&
1137             pCcb->FullFileName.Length > 0 &&
1138             pCcb->FullFileName.Buffer[ (pCcb->FullFileName.Length/sizeof( WCHAR)) - 1] != L'\\')
1139         {
1140             bAddTrailingSlash = TRUE;
1141         }
1142
1143         usFullNameLength = sizeof( WCHAR) +
1144                                     AFSServerName.Length +
1145                                     pCcb->FullFileName.Length;
1146
1147         if( bAddLeadingSlash)
1148         {
1149             usFullNameLength += sizeof( WCHAR);
1150         }
1151
1152         if( bAddTrailingSlash)
1153         {
1154             usFullNameLength += sizeof( WCHAR);
1155         }
1156
1157         if( *Length >= (LONG)(FIELD_OFFSET( FILE_NAME_INFORMATION, FileName) + (LONG)usFullNameLength))
1158         {
1159
1160             ulCopyLength = (LONG)usFullNameLength;
1161         }
1162         else
1163         {
1164
1165             ulCopyLength = *Length - FIELD_OFFSET( FILE_NAME_INFORMATION, FileName);
1166
1167             ntStatus = STATUS_BUFFER_OVERFLOW;
1168         }
1169
1170         Buffer->FileNameLength = (ULONG)usFullNameLength;
1171
1172         *Length -= FIELD_OFFSET( FILE_NAME_INFORMATION, FileName);
1173
1174         if( ulCopyLength > 0)
1175         {
1176
1177             Buffer->FileName[ 0] = L'\\';
1178             ulCopyLength -= sizeof( WCHAR);
1179
1180             *Length -= sizeof( WCHAR);
1181             cchCopied += 1;
1182
1183             if( ulCopyLength >= AFSServerName.Length)
1184             {
1185
1186                 RtlCopyMemory( &Buffer->FileName[ 1],
1187                                AFSServerName.Buffer,
1188                                AFSServerName.Length);
1189
1190                 ulCopyLength -= AFSServerName.Length;
1191                 *Length -= AFSServerName.Length;
1192                 cchCopied += AFSServerName.Length/sizeof( WCHAR);
1193
1194                 if ( ulCopyLength > 0 &&
1195                      bAddLeadingSlash)
1196                 {
1197
1198                     Buffer->FileName[ cchCopied] = L'\\';
1199
1200                     ulCopyLength -= sizeof( WCHAR);
1201                     *Length -= sizeof( WCHAR);
1202                     cchCopied++;
1203                 }
1204
1205                 if( ulCopyLength >= pCcb->FullFileName.Length)
1206                 {
1207
1208                     RtlCopyMemory( &Buffer->FileName[ cchCopied],
1209                                    pCcb->FullFileName.Buffer,
1210                                    pCcb->FullFileName.Length);
1211
1212                     ulCopyLength -= pCcb->FullFileName.Length;
1213                     *Length -= pCcb->FullFileName.Length;
1214                     cchCopied += pCcb->FullFileName.Length/sizeof( WCHAR);
1215
1216                     if( ulCopyLength > 0 &&
1217                         bAddTrailingSlash)
1218                     {
1219                         Buffer->FileName[ cchCopied] = L'\\';
1220
1221                         *Length -= sizeof( WCHAR);
1222                     }
1223                 }
1224                 else
1225                 {
1226
1227                     RtlCopyMemory( &Buffer->FileName[ cchCopied],
1228                                    pCcb->FullFileName.Buffer,
1229                                    ulCopyLength);
1230
1231                     *Length -= ulCopyLength;
1232                 }
1233             }
1234         }
1235     }
1236     else
1237     {
1238
1239         ntStatus = STATUS_BUFFER_TOO_SMALL;
1240     }
1241
1242     return ntStatus;
1243 }
1244
1245 NTSTATUS
1246 AFSQueryShortNameInfo( IN PIRP Irp,
1247                        IN AFSDirectoryCB *DirectoryCB,
1248                        IN OUT PFILE_NAME_INFORMATION Buffer,
1249                        IN OUT PLONG Length)
1250 {
1251
1252     NTSTATUS ntStatus = STATUS_BUFFER_TOO_SMALL;
1253     ULONG ulCopyLength = 0;
1254
1255     RtlZeroMemory( Buffer,
1256                    *Length);
1257
1258     if( DirectoryCB->NameInformation.ShortNameLength == 0)
1259     {
1260
1261         //
1262         // The short name IS the long name
1263         //
1264
1265         if( *Length >= (LONG)FIELD_OFFSET( FILE_NAME_INFORMATION, FileName))
1266         {
1267
1268             if( *Length >= (LONG)(FIELD_OFFSET( FILE_NAME_INFORMATION, FileName) + (LONG)DirectoryCB->NameInformation.FileName.Length))
1269             {
1270
1271                 ulCopyLength = (LONG)DirectoryCB->NameInformation.FileName.Length;
1272
1273                 ntStatus = STATUS_SUCCESS;
1274             }
1275             else
1276             {
1277
1278                 ulCopyLength = *Length - FIELD_OFFSET( FILE_NAME_INFORMATION, FileName);
1279
1280                 ntStatus = STATUS_BUFFER_OVERFLOW;
1281             }
1282
1283             Buffer->FileNameLength = DirectoryCB->NameInformation.FileName.Length;
1284
1285             *Length -= FIELD_OFFSET( FILE_NAME_INFORMATION, FileName);
1286
1287             if( ulCopyLength > 0)
1288             {
1289
1290                 RtlCopyMemory( Buffer->FileName,
1291                                DirectoryCB->NameInformation.FileName.Buffer,
1292                                ulCopyLength);
1293
1294                 *Length -= ulCopyLength;
1295             }
1296         }
1297     }
1298     else
1299     {
1300
1301         if( *Length >= (LONG)FIELD_OFFSET( FILE_NAME_INFORMATION, FileName))
1302         {
1303
1304             if( *Length >= (LONG)(FIELD_OFFSET( FILE_NAME_INFORMATION, FileName) + (LONG)DirectoryCB->NameInformation.FileName.Length))
1305             {
1306
1307                 ulCopyLength = (LONG)DirectoryCB->NameInformation.ShortNameLength;
1308
1309                 ntStatus = STATUS_SUCCESS;
1310             }
1311             else
1312             {
1313
1314                 ulCopyLength = *Length - FIELD_OFFSET( FILE_NAME_INFORMATION, FileName);
1315
1316                 ntStatus = STATUS_BUFFER_OVERFLOW;
1317             }
1318
1319             Buffer->FileNameLength = DirectoryCB->NameInformation.ShortNameLength;
1320
1321             *Length -= FIELD_OFFSET( FILE_NAME_INFORMATION, FileName);
1322
1323             if( ulCopyLength > 0)
1324             {
1325
1326                 RtlCopyMemory( Buffer->FileName,
1327                                DirectoryCB->NameInformation.ShortName,
1328                                Buffer->FileNameLength);
1329
1330                 *Length -= ulCopyLength;
1331             }
1332         }
1333     }
1334
1335     return ntStatus;
1336 }
1337
1338 NTSTATUS
1339 AFSQueryNetworkInfo( IN PIRP Irp,
1340                      IN AFSDirectoryCB *DirectoryCB,
1341                      IN OUT PFILE_NETWORK_OPEN_INFORMATION Buffer,
1342                      IN OUT PLONG Length)
1343 {
1344
1345     NTSTATUS ntStatus = STATUS_SUCCESS;
1346     AFSDeviceExt *pDeviceExt = (AFSDeviceExt *)AFSRDRDeviceObject->DeviceExtension;
1347     AFSFcb *pFcb = NULL;
1348     AFSCcb *pCcb = NULL;
1349     PIO_STACK_LOCATION pIrpSp = IoGetCurrentIrpStackLocation( Irp);
1350     AFSFileInfoCB stFileInfo;
1351     AFSDirectoryCB *pParentDirectoryCB = NULL;
1352     UNICODE_STRING uniParentPath;
1353     ULONG ulFileAttribs = 0;
1354
1355     RtlZeroMemory( Buffer,
1356                    *Length);
1357
1358     if( *Length >= sizeof( FILE_NETWORK_OPEN_INFORMATION))
1359     {
1360
1361         ulFileAttribs = DirectoryCB->ObjectInformation->FileAttributes;
1362
1363         pFcb = (AFSFcb *)pIrpSp->FileObject->FsContext;
1364         pCcb = (AFSCcb *)pIrpSp->FileObject->FsContext2;
1365
1366         if( DirectoryCB->ObjectInformation->FileType == AFS_FILE_TYPE_SYMLINK)
1367         {
1368
1369             pParentDirectoryCB = AFSGetParentEntry( pCcb->NameArray);
1370
1371             AFSRetrieveParentPath( &pCcb->FullFileName,
1372                                    &uniParentPath);
1373
1374             RtlZeroMemory( &stFileInfo,
1375                            sizeof( AFSFileInfoCB));
1376
1377             //
1378             // Can't hold the Fcb while evaluating the path, leads to lock inversion
1379             //
1380
1381             AFSReleaseResource( &pFcb->NPFcb->Resource);
1382
1383             if( NT_SUCCESS( AFSRetrieveFileAttributes( pParentDirectoryCB,
1384                                                        DirectoryCB,
1385                                                        &uniParentPath,
1386                                                        NULL,
1387                                                        &stFileInfo)))
1388             {
1389                 ulFileAttribs = stFileInfo.FileAttributes;
1390
1391                 ulFileAttribs |= FILE_ATTRIBUTE_REPARSE_POINT;
1392             }
1393
1394             AFSAcquireShared( &pFcb->NPFcb->Resource,
1395                               TRUE);
1396         }
1397
1398         AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
1399                       AFS_TRACE_LEVEL_VERBOSE_2,
1400                       "AFSQueryNetworkInfo %wZ Type 0x%x Attrib 0x%x -> 0x%x\n",
1401                       &pCcb->DirectoryCB->NameInformation.FileName,
1402                       pCcb->DirectoryCB->ObjectInformation->FileType,
1403                       pCcb->DirectoryCB->ObjectInformation->FileAttributes,
1404                       ulFileAttribs);
1405
1406         Buffer->CreationTime.QuadPart = DirectoryCB->ObjectInformation->CreationTime.QuadPart;
1407         Buffer->LastAccessTime.QuadPart = DirectoryCB->ObjectInformation->LastAccessTime.QuadPart;
1408         Buffer->LastWriteTime.QuadPart = DirectoryCB->ObjectInformation->LastWriteTime.QuadPart;
1409         Buffer->ChangeTime.QuadPart = DirectoryCB->ObjectInformation->ChangeTime.QuadPart;
1410
1411         Buffer->AllocationSize.QuadPart = DirectoryCB->ObjectInformation->AllocationSize.QuadPart;
1412         Buffer->EndOfFile.QuadPart = DirectoryCB->ObjectInformation->EndOfFile.QuadPart;
1413
1414         Buffer->FileAttributes = ulFileAttribs;
1415
1416         if( DirectoryCB->NameInformation.FileName.Buffer[ 0] == L'.' &&
1417             BooleanFlagOn( pDeviceExt->DeviceFlags, AFS_DEVICE_FLAG_HIDE_DOT_NAMES))
1418         {
1419
1420             if ( Buffer->FileAttributes != FILE_ATTRIBUTE_NORMAL)
1421             {
1422
1423                 Buffer->FileAttributes |= FILE_ATTRIBUTE_HIDDEN;
1424             }
1425             else
1426             {
1427
1428                 Buffer->FileAttributes = FILE_ATTRIBUTE_HIDDEN;
1429             }
1430         }
1431
1432         *Length -= sizeof( FILE_NETWORK_OPEN_INFORMATION);
1433     }
1434     else
1435     {
1436
1437         ntStatus = STATUS_BUFFER_TOO_SMALL;
1438     }
1439
1440     return ntStatus;
1441 }
1442
1443 NTSTATUS
1444 AFSQueryStreamInfo( IN PIRP Irp,
1445                     IN AFSDirectoryCB *DirectoryCB,
1446                     IN OUT FILE_STREAM_INFORMATION *Buffer,
1447                     IN OUT PLONG Length)
1448 {
1449
1450     NTSTATUS ntStatus = STATUS_BUFFER_TOO_SMALL;
1451     ULONG ulCopyLength = 0;
1452     AFSDeviceExt *pDeviceExt = (AFSDeviceExt *)AFSRDRDeviceObject->DeviceExtension;
1453
1454     if( *Length >= FIELD_OFFSET( FILE_STREAM_INFORMATION, StreamName))
1455     {
1456
1457         RtlZeroMemory( Buffer,
1458                        *Length);
1459
1460         Buffer->NextEntryOffset = 0;
1461
1462
1463         if( !BooleanFlagOn( DirectoryCB->ObjectInformation->FileAttributes, FILE_ATTRIBUTE_DIRECTORY))
1464         {
1465
1466             if( *Length >= (LONG)(FIELD_OFFSET( FILE_STREAM_INFORMATION, StreamName) + 14))  // ::$DATA
1467             {
1468
1469                 ulCopyLength = 14;
1470
1471                 ntStatus = STATUS_SUCCESS;
1472             }
1473             else
1474             {
1475
1476                 ulCopyLength = *Length - FIELD_OFFSET( FILE_STREAM_INFORMATION, StreamName);
1477
1478                 ntStatus = STATUS_BUFFER_OVERFLOW;
1479             }
1480
1481             Buffer->StreamNameLength = 14; // ::$DATA
1482
1483             Buffer->StreamSize.QuadPart = DirectoryCB->ObjectInformation->EndOfFile.QuadPart;
1484
1485             Buffer->StreamAllocationSize.QuadPart = DirectoryCB->ObjectInformation->AllocationSize.QuadPart;
1486
1487             *Length -= FIELD_OFFSET( FILE_STREAM_INFORMATION, StreamName);
1488
1489             if( ulCopyLength > 0)
1490             {
1491
1492                 RtlCopyMemory( Buffer->StreamName,
1493                                L"::$DATA",
1494                                ulCopyLength);
1495
1496                 *Length -= ulCopyLength;
1497             }
1498         }
1499         else
1500         {
1501
1502             Buffer->StreamNameLength = 0;       // No stream for a directory
1503
1504             // The response size is zero
1505
1506             ntStatus = STATUS_SUCCESS;
1507         }
1508     }
1509
1510     return ntStatus;
1511 }
1512
1513 NTSTATUS
1514 AFSQueryAttribTagInfo( IN PIRP Irp,
1515                        IN AFSDirectoryCB *DirectoryCB,
1516                        IN OUT FILE_ATTRIBUTE_TAG_INFORMATION *Buffer,
1517                        IN OUT PLONG Length)
1518 {
1519
1520     NTSTATUS ntStatus = STATUS_BUFFER_TOO_SMALL;
1521     ULONG ulCopyLength = 0;
1522     AFSDeviceExt *pDeviceExt = (AFSDeviceExt *)AFSRDRDeviceObject->DeviceExtension;
1523     AFSFcb *pFcb = NULL;
1524     AFSCcb *pCcb = NULL;
1525     PIO_STACK_LOCATION pIrpSp = IoGetCurrentIrpStackLocation( Irp);
1526     AFSFileInfoCB stFileInfo;
1527     AFSDirectoryCB *pParentDirectoryCB = NULL;
1528     UNICODE_STRING uniParentPath;
1529     ULONG ulFileAttribs = 0;
1530
1531     if( *Length >= sizeof( FILE_ATTRIBUTE_TAG_INFORMATION))
1532     {
1533
1534         RtlZeroMemory( Buffer,
1535                        *Length);
1536
1537         ulFileAttribs = DirectoryCB->ObjectInformation->FileAttributes;
1538
1539         pFcb = (AFSFcb *)pIrpSp->FileObject->FsContext;
1540         pCcb = (AFSCcb *)pIrpSp->FileObject->FsContext2;
1541
1542         if( DirectoryCB->ObjectInformation->FileType == AFS_FILE_TYPE_SYMLINK)
1543         {
1544
1545             pParentDirectoryCB = AFSGetParentEntry( pCcb->NameArray);
1546
1547             AFSRetrieveParentPath( &pCcb->FullFileName,
1548                                    &uniParentPath);
1549
1550             RtlZeroMemory( &stFileInfo,
1551                            sizeof( AFSFileInfoCB));
1552
1553             //
1554             // Can't hold the Fcb while evaluating the path, leads to lock inversion
1555             //
1556
1557             AFSReleaseResource( &pFcb->NPFcb->Resource);
1558
1559             if( NT_SUCCESS( AFSRetrieveFileAttributes( pParentDirectoryCB,
1560                                                        DirectoryCB,
1561                                                        &uniParentPath,
1562                                                        NULL,
1563                                                        &stFileInfo)))
1564             {
1565                 ulFileAttribs = stFileInfo.FileAttributes;
1566
1567                 ulFileAttribs |= FILE_ATTRIBUTE_REPARSE_POINT;
1568             }
1569
1570             AFSAcquireShared( &pFcb->NPFcb->Resource,
1571                               TRUE);
1572         }
1573
1574         AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
1575                       AFS_TRACE_LEVEL_VERBOSE_2,
1576                       "AFSAttribTagInfo %wZ Type 0x%x Attrib 0x%x -> 0x%x\n",
1577                       &pCcb->DirectoryCB->NameInformation.FileName,
1578                       pCcb->DirectoryCB->ObjectInformation->FileType,
1579                       pCcb->DirectoryCB->ObjectInformation->FileAttributes,
1580                       ulFileAttribs);
1581
1582         Buffer->FileAttributes = ulFileAttribs;
1583
1584         if( DirectoryCB->NameInformation.FileName.Buffer[ 0] == L'.' &&
1585             BooleanFlagOn( pDeviceExt->DeviceFlags, AFS_DEVICE_FLAG_HIDE_DOT_NAMES))
1586         {
1587
1588             if ( Buffer->FileAttributes != FILE_ATTRIBUTE_NORMAL)
1589             {
1590
1591                 Buffer->FileAttributes |= FILE_ATTRIBUTE_HIDDEN;
1592             }
1593             else
1594             {
1595
1596                 Buffer->FileAttributes = FILE_ATTRIBUTE_HIDDEN;
1597             }
1598         }
1599
1600         if( BooleanFlagOn( DirectoryCB->ObjectInformation->FileAttributes, FILE_ATTRIBUTE_REPARSE_POINT))
1601         {
1602             Buffer->ReparseTag = IO_REPARSE_TAG_OPENAFS_DFS;
1603         }
1604
1605         *Length -= sizeof( FILE_ATTRIBUTE_TAG_INFORMATION);
1606
1607         ntStatus = STATUS_SUCCESS;
1608     }
1609
1610     return ntStatus;
1611 }
1612
1613 NTSTATUS
1614 AFSQueryRemoteProtocolInfo( IN PIRP Irp,
1615                             IN AFSDirectoryCB *DirectoryCB,
1616                             IN OUT FILE_REMOTE_PROTOCOL_INFORMATION *Buffer,
1617                             IN OUT PLONG Length)
1618 {
1619
1620     NTSTATUS ntStatus = STATUS_BUFFER_TOO_SMALL;
1621     ULONG ulCopyLength = 0;
1622     AFSDeviceExt *pDeviceExt = (AFSDeviceExt *)AFSRDRDeviceObject->DeviceExtension;
1623
1624     if( *Length >= sizeof( FILE_REMOTE_PROTOCOL_INFORMATION))
1625     {
1626
1627         RtlZeroMemory( Buffer,
1628                        *Length);
1629
1630         Buffer->StructureVersion = 1;
1631
1632         Buffer->StructureSize = sizeof(FILE_REMOTE_PROTOCOL_INFORMATION);
1633
1634         Buffer->Protocol = WNNC_NET_OPENAFS;
1635
1636         Buffer->ProtocolMajorVersion = 3;
1637
1638         Buffer->ProtocolMinorVersion = 0;
1639
1640         Buffer->ProtocolRevision = 0;
1641
1642         *Length -= sizeof( FILE_REMOTE_PROTOCOL_INFORMATION);
1643
1644         ntStatus = STATUS_SUCCESS;
1645     }
1646
1647     return ntStatus;
1648 }
1649
1650 NTSTATUS
1651 AFSQueryPhysicalNameInfo( IN PIRP Irp,
1652                           IN AFSDirectoryCB *DirectoryCB,
1653                           IN OUT PFILE_NETWORK_PHYSICAL_NAME_INFORMATION Buffer,
1654                           IN OUT PLONG Length)
1655 {
1656
1657     NTSTATUS ntStatus = STATUS_SUCCESS;
1658     ULONG ulCopyLength = 0;
1659     ULONG cchCopied = 0;
1660     AFSFcb *pFcb = NULL;
1661     AFSCcb *pCcb = NULL;
1662     IO_STACK_LOCATION *pIrpSp = IoGetCurrentIrpStackLocation( Irp);
1663     BOOLEAN bAddLeadingSlash = FALSE;
1664     USHORT usFullNameLength = 0;
1665
1666     pFcb = (AFSFcb *)pIrpSp->FileObject->FsContext;
1667
1668     pCcb = (AFSCcb *)pIrpSp->FileObject->FsContext2;
1669
1670     if( *Length >= FIELD_OFFSET( FILE_NETWORK_PHYSICAL_NAME_INFORMATION, FileName))
1671     {
1672
1673         RtlZeroMemory( Buffer,
1674                        *Length);
1675
1676         if( pCcb->FullFileName.Length == 0 ||
1677             pCcb->FullFileName.Buffer[ 0] != L'\\')
1678         {
1679             bAddLeadingSlash = TRUE;
1680         }
1681
1682         usFullNameLength = pCcb->FullFileName.Length;
1683
1684         if( bAddLeadingSlash)
1685         {
1686             usFullNameLength += sizeof( WCHAR);
1687         }
1688
1689         if( *Length >= (LONG)(FIELD_OFFSET( FILE_NETWORK_PHYSICAL_NAME_INFORMATION, FileName) + (LONG)usFullNameLength))
1690         {
1691             ulCopyLength = (LONG)usFullNameLength;
1692         }
1693         else
1694         {
1695
1696             ulCopyLength = *Length - FIELD_OFFSET( FILE_NETWORK_PHYSICAL_NAME_INFORMATION, FileName);
1697
1698             ntStatus = STATUS_BUFFER_OVERFLOW;
1699         }
1700
1701         Buffer->FileNameLength = (ULONG)usFullNameLength;
1702
1703         *Length -= FIELD_OFFSET( FILE_NETWORK_PHYSICAL_NAME_INFORMATION, FileName);
1704
1705         if( ulCopyLength > 0)
1706         {
1707
1708             if( bAddLeadingSlash)
1709             {
1710
1711                 Buffer->FileName[ cchCopied] = L'\\';
1712
1713                 ulCopyLength -= sizeof( WCHAR);
1714                 *Length -= sizeof( WCHAR);
1715                 cchCopied++;
1716             }
1717
1718             if( ulCopyLength >= pCcb->FullFileName.Length)
1719             {
1720
1721                 RtlCopyMemory( &Buffer->FileName[ cchCopied],
1722                                pCcb->FullFileName.Buffer,
1723                                pCcb->FullFileName.Length);
1724
1725                 ulCopyLength -= pCcb->FullFileName.Length;
1726                 *Length -= pCcb->FullFileName.Length;
1727                 cchCopied += pCcb->FullFileName.Length/sizeof( WCHAR);
1728             }
1729             else
1730             {
1731
1732                 RtlCopyMemory( &Buffer->FileName[ cchCopied],
1733                                pCcb->FullFileName.Buffer,
1734                                ulCopyLength);
1735
1736                 *Length -= ulCopyLength;
1737             }
1738         }
1739     }
1740     else
1741     {
1742
1743         ntStatus = STATUS_BUFFER_TOO_SMALL;
1744     }
1745
1746     return ntStatus;
1747 }
1748
1749 NTSTATUS
1750 AFSSetBasicInfo( IN PIRP Irp,
1751                  IN AFSDirectoryCB *DirectoryCB)
1752 {
1753     NTSTATUS ntStatus = STATUS_SUCCESS;
1754     PFILE_BASIC_INFORMATION pBuffer;
1755     PIO_STACK_LOCATION pIrpSp = IoGetCurrentIrpStackLocation( Irp);
1756     ULONG ulNotifyFilter = 0;
1757     AFSCcb *pCcb = NULL;
1758
1759     __Enter
1760     {
1761
1762         pCcb = (AFSCcb *)pIrpSp->FileObject->FsContext2;
1763
1764         pBuffer = (PFILE_BASIC_INFORMATION)Irp->AssociatedIrp.SystemBuffer;
1765
1766         pCcb->FileUnwindInfo.FileAttributes = (ULONG)-1;
1767
1768         if( pBuffer->FileAttributes != (ULONGLONG)0)
1769         {
1770
1771             if( DirectoryCB->ObjectInformation->Fcb->Header.NodeTypeCode == AFS_FILE_FCB &&
1772                 BooleanFlagOn( pBuffer->FileAttributes, FILE_ATTRIBUTE_DIRECTORY))
1773             {
1774
1775                 try_return( ntStatus = STATUS_INVALID_PARAMETER);
1776             }
1777
1778             if( DirectoryCB->ObjectInformation->Fcb->Header.NodeTypeCode == AFS_DIRECTORY_FCB)
1779             {
1780
1781                 pBuffer->FileAttributes |= FILE_ATTRIBUTE_DIRECTORY;
1782             }
1783
1784             pCcb->FileUnwindInfo.FileAttributes = DirectoryCB->ObjectInformation->FileAttributes;
1785
1786             DirectoryCB->ObjectInformation->FileAttributes = pBuffer->FileAttributes;
1787
1788             ulNotifyFilter |= FILE_NOTIFY_CHANGE_ATTRIBUTES;
1789
1790             SetFlag( DirectoryCB->ObjectInformation->Fcb->Flags, AFS_FCB_FLAG_FILE_MODIFIED);
1791         }
1792
1793         pCcb->FileUnwindInfo.CreationTime.QuadPart = (ULONGLONG)-1;
1794
1795         if( pBuffer->CreationTime.QuadPart != (ULONGLONG)-1 &&
1796             pBuffer->CreationTime.QuadPart != (ULONGLONG)0)
1797         {
1798
1799             pCcb->FileUnwindInfo.CreationTime.QuadPart = DirectoryCB->ObjectInformation->CreationTime.QuadPart;
1800
1801             DirectoryCB->ObjectInformation->CreationTime.QuadPart = pBuffer->CreationTime.QuadPart;
1802
1803             ulNotifyFilter |= FILE_NOTIFY_CHANGE_CREATION;
1804
1805             SetFlag( DirectoryCB->ObjectInformation->Fcb->Flags, AFS_FCB_FLAG_FILE_MODIFIED | AFS_FCB_FLAG_UPDATE_CREATE_TIME);
1806         }
1807
1808         pCcb->FileUnwindInfo.LastAccessTime.QuadPart = (ULONGLONG)-1;
1809
1810         if( pBuffer->LastAccessTime.QuadPart != (ULONGLONG)-1 &&
1811             pBuffer->LastAccessTime.QuadPart != (ULONGLONG)0)
1812         {
1813
1814             pCcb->FileUnwindInfo.LastAccessTime.QuadPart = DirectoryCB->ObjectInformation->LastAccessTime.QuadPart;
1815
1816             DirectoryCB->ObjectInformation->LastAccessTime.QuadPart = pBuffer->LastAccessTime.QuadPart;
1817
1818             ulNotifyFilter |= FILE_NOTIFY_CHANGE_LAST_ACCESS;
1819
1820             SetFlag( DirectoryCB->ObjectInformation->Fcb->Flags, AFS_FCB_FLAG_FILE_MODIFIED | AFS_FCB_FLAG_UPDATE_ACCESS_TIME);
1821         }
1822
1823         pCcb->FileUnwindInfo.LastWriteTime.QuadPart = (ULONGLONG)-1;
1824
1825         if( pBuffer->LastWriteTime.QuadPart != (ULONGLONG)-1 &&
1826             pBuffer->LastWriteTime.QuadPart != (ULONGLONG)0)
1827         {
1828
1829             pCcb->FileUnwindInfo.LastWriteTime.QuadPart = DirectoryCB->ObjectInformation->LastWriteTime.QuadPart;
1830
1831             DirectoryCB->ObjectInformation->LastWriteTime.QuadPart = pBuffer->LastWriteTime.QuadPart;
1832
1833             ulNotifyFilter |= FILE_NOTIFY_CHANGE_LAST_WRITE;
1834
1835             SetFlag( DirectoryCB->ObjectInformation->Fcb->Flags, AFS_FCB_FLAG_FILE_MODIFIED | AFS_FCB_FLAG_UPDATE_LAST_WRITE_TIME);
1836         }
1837
1838         pCcb->FileUnwindInfo.ChangeTime.QuadPart = (ULONGLONG)-1;
1839
1840         if( pBuffer->ChangeTime.QuadPart != (ULONGLONG)-1 &&
1841             pBuffer->ChangeTime.QuadPart != (ULONGLONG)0)
1842         {
1843
1844             pCcb->FileUnwindInfo.ChangeTime.QuadPart = DirectoryCB->ObjectInformation->ChangeTime.QuadPart;
1845
1846             DirectoryCB->ObjectInformation->ChangeTime.QuadPart = pBuffer->ChangeTime.QuadPart;
1847
1848             ulNotifyFilter |= FILE_NOTIFY_CHANGE_LAST_ACCESS;
1849
1850             SetFlag( DirectoryCB->ObjectInformation->Fcb->Flags, AFS_FCB_FLAG_FILE_MODIFIED | AFS_FCB_FLAG_UPDATE_CHANGE_TIME);
1851         }
1852
1853         if( ulNotifyFilter > 0)
1854         {
1855
1856             if( DirectoryCB->ObjectInformation->ParentObjectInformation != NULL)
1857             {
1858
1859                 AFSFsRtlNotifyFullReportChange( DirectoryCB->ObjectInformation->ParentObjectInformation,
1860                                                 pCcb,
1861                                                 (ULONG)ulNotifyFilter,
1862                                                 (ULONG)FILE_ACTION_MODIFIED);
1863             }
1864         }
1865
1866 try_exit:
1867
1868         NOTHING;
1869     }
1870
1871     return ntStatus;
1872 }
1873
1874 NTSTATUS
1875 AFSSetDispositionInfo( IN PIRP Irp,
1876                        IN AFSDirectoryCB *DirectoryCB)
1877 {
1878     NTSTATUS ntStatus = STATUS_SUCCESS;
1879     PFILE_DISPOSITION_INFORMATION pBuffer;
1880     PIO_STACK_LOCATION pIrpSp = IoGetCurrentIrpStackLocation( Irp);
1881     AFSFcb *pFcb = NULL;
1882     AFSCcb *pCcb = NULL;
1883
1884     __Enter
1885     {
1886
1887         pBuffer = (PFILE_DISPOSITION_INFORMATION)Irp->AssociatedIrp.SystemBuffer;
1888
1889         pFcb = (AFSFcb *)pIrpSp->FileObject->FsContext;
1890
1891         pCcb = (AFSCcb *)pIrpSp->FileObject->FsContext2;
1892
1893         //
1894         // Can't delete the root
1895         //
1896
1897         if( pFcb->Header.NodeTypeCode == AFS_ROOT_FCB)
1898         {
1899
1900             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
1901                           AFS_TRACE_LEVEL_ERROR,
1902                           "AFSSetDispositionInfo Attempt to delete root entry\n");
1903
1904             try_return( ntStatus = STATUS_CANNOT_DELETE);
1905         }
1906
1907         //
1908         // If the file is read only then do not allow the delete
1909         //
1910
1911         if( BooleanFlagOn( DirectoryCB->ObjectInformation->FileAttributes, FILE_ATTRIBUTE_READONLY))
1912         {
1913
1914             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
1915                           AFS_TRACE_LEVEL_ERROR,
1916                           "AFSSetDispositionInfo Attempt to delete read only entry %wZ\n",
1917                           &DirectoryCB->NameInformation.FileName);
1918
1919             try_return( ntStatus = STATUS_CANNOT_DELETE);
1920         }
1921
1922         if( pBuffer->DeleteFile)
1923         {
1924
1925             //
1926             // Check if the caller can delete the file
1927             //
1928
1929             ntStatus = AFSNotifyDelete( DirectoryCB,
1930                                         TRUE);
1931
1932             if( !NT_SUCCESS( ntStatus))
1933             {
1934
1935                 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
1936                               AFS_TRACE_LEVEL_ERROR,
1937                               "AFSSetDispositionInfo Cannot delete entry %wZ Status %08lX\n",
1938                               &DirectoryCB->NameInformation.FileName,
1939                               ntStatus);
1940
1941                 try_return( ntStatus);
1942             }
1943
1944             if( pFcb->Header.NodeTypeCode == AFS_DIRECTORY_FCB)
1945             {
1946
1947                 //
1948                 // Check if this is a directory that there are not currently other opens
1949                 //
1950
1951                 if( pFcb->ObjectInformation->Specific.Directory.ChildOpenHandleCount > 0)
1952                 {
1953
1954                     AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
1955                                   AFS_TRACE_LEVEL_ERROR,
1956                                   "AFSSetDispositionInfo Attempt to delete directory %wZ with open %u handles\n",
1957                                   &DirectoryCB->NameInformation.FileName,
1958                                   pFcb->ObjectInformation->Specific.Directory.ChildOpenHandleCount);
1959
1960                     try_return( ntStatus = STATUS_DIRECTORY_NOT_EMPTY);
1961                 }
1962
1963                 if( !AFSIsDirectoryEmptyForDelete( pFcb))
1964                 {
1965
1966                     AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
1967                                   AFS_TRACE_LEVEL_ERROR,
1968                                   "AFSSetDispositionInfo Attempt to delete non-empty directory %wZ\n",
1969                                   &DirectoryCB->NameInformation.FileName);
1970
1971                     try_return( ntStatus = STATUS_DIRECTORY_NOT_EMPTY);
1972                 }
1973             }
1974             else
1975             {
1976
1977                 //
1978                 // Attempt to flush any outstanding data
1979                 //
1980
1981                 if( !MmFlushImageSection( &pFcb->NPFcb->SectionObjectPointers,
1982                                           MmFlushForDelete))
1983                 {
1984
1985                     AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
1986                                   AFS_TRACE_LEVEL_ERROR,
1987                                   "AFSSetDispositionInfo Failed to flush image section for delete Entry %wZ\n",
1988                                   &DirectoryCB->NameInformation.FileName);
1989
1990                     try_return( ntStatus = STATUS_CANNOT_DELETE);
1991                 }
1992
1993                 //
1994                 // Purge the cache as well
1995                 //
1996
1997                 if( pFcb->NPFcb->SectionObjectPointers.DataSectionObject != NULL)
1998                 {
1999
2000                     CcPurgeCacheSection( &pFcb->NPFcb->SectionObjectPointers,
2001                                          NULL,
2002                                          0,
2003                                          TRUE);
2004                 }
2005             }
2006
2007             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2008                           AFS_TRACE_LEVEL_VERBOSE,
2009                           "AFSSetDispositionInfo Setting PENDING_DELETE on DirEntry  %p Name %wZ\n",
2010                           DirectoryCB,
2011                           &DirectoryCB->NameInformation.FileName);
2012
2013             SetFlag( pCcb->DirectoryCB->Flags, AFS_DIR_ENTRY_PENDING_DELETE);
2014         }
2015         else
2016         {
2017
2018             ClearFlag( pCcb->DirectoryCB->Flags, AFS_DIR_ENTRY_PENDING_DELETE);
2019         }
2020
2021         //
2022         // OK, should be good to go, set the flag in the file object
2023         //
2024
2025         pIrpSp->FileObject->DeletePending = pBuffer->DeleteFile;
2026
2027 try_exit:
2028
2029         NOTHING;
2030     }
2031
2032     return ntStatus;
2033 }
2034
2035 NTSTATUS
2036 AFSSetRenameInfo( IN PIRP Irp)
2037 {
2038
2039     NTSTATUS ntStatus = STATUS_SUCCESS;
2040     PIO_STACK_LOCATION pIrpSp = IoGetCurrentIrpStackLocation( Irp);
2041     IO_STATUS_BLOCK stIoSb = {0,0};
2042     AFSFcb *pSrcFcb = NULL, *pTargetDcb = NULL, *pTargetFcb = NULL;
2043     AFSCcb *pSrcCcb = NULL, *pTargetDirCcb = NULL;
2044     PFILE_OBJECT pSrcFileObj = pIrpSp->FileObject;
2045     PFILE_OBJECT pTargetFileObj = pIrpSp->Parameters.SetFile.FileObject;
2046     PFILE_RENAME_INFORMATION pRenameInfo = NULL;
2047     UNICODE_STRING uniTargetName, uniSourceName;
2048     BOOLEAN bReplaceIfExists = FALSE;
2049     UNICODE_STRING uniShortName;
2050     AFSDirectoryCB *pTargetDirEntry = NULL;
2051     ULONG ulTargetCRC = 0;
2052     BOOLEAN bTargetEntryExists = FALSE;
2053     AFSObjectInfoCB *pSrcObject = NULL, *pTargetObject = NULL;
2054     AFSObjectInfoCB *pSrcParentObject = NULL, *pTargetParentObject = NULL;
2055     AFSFileID stNewFid, stTmpTargetFid;
2056     ULONG ulNotificationAction = 0, ulNotifyFilter = 0;
2057     UNICODE_STRING uniFullTargetPath;
2058     BOOLEAN bCommonParent = FALSE;
2059     BOOLEAN bReleaseVolumeLock = FALSE;
2060     BOOLEAN bReleaseTargetDirLock = FALSE;
2061     BOOLEAN bReleaseSourceDirLock = FALSE;
2062     PERESOURCE  pSourceDirLock = NULL;
2063
2064     __Enter
2065     {
2066
2067         bReplaceIfExists = pIrpSp->Parameters.SetFile.ReplaceIfExists;
2068
2069         pSrcFcb = (AFSFcb *)pSrcFileObj->FsContext;
2070         pSrcCcb = (AFSCcb *)pSrcFileObj->FsContext2;
2071
2072         pSrcObject = pSrcFcb->ObjectInformation;
2073
2074         //
2075         // Perform some basic checks to ensure FS integrity
2076         //
2077
2078         if( pSrcFcb->Header.NodeTypeCode == AFS_ROOT_FCB)
2079         {
2080
2081             //
2082             // Can't rename the root directory
2083             //
2084
2085             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2086                           AFS_TRACE_LEVEL_ERROR,
2087                           "AFSSetRenameInfo Attempt to rename root entry\n");
2088
2089             try_return( ntStatus = STATUS_INVALID_PARAMETER);
2090         }
2091
2092         if( pSrcFcb->Header.NodeTypeCode == AFS_DIRECTORY_FCB)
2093         {
2094
2095             //
2096             // If there are any open children then fail the rename
2097             //
2098
2099             if( pSrcFcb->ObjectInformation->Specific.Directory.ChildOpenHandleCount > 0)
2100             {
2101
2102                 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2103                               AFS_TRACE_LEVEL_ERROR,
2104                               "AFSSetRenameInfo Attempt to rename directory with open children %wZ\n",
2105                               &pSrcCcb->DirectoryCB->NameInformation.FileName);
2106
2107                 try_return( ntStatus = STATUS_ACCESS_DENIED);
2108             }
2109         }
2110         else
2111         {
2112
2113             if( pSrcFcb->OpenHandleCount > 1)
2114             {
2115
2116                 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2117                               AFS_TRACE_LEVEL_ERROR,
2118                               "AFSSetRenameInfo Attempt to rename directory with open references %wZ\n",
2119                               &pSrcCcb->DirectoryCB->NameInformation.FileName);
2120
2121                 try_return( ntStatus = STATUS_ACCESS_DENIED);
2122             }
2123         }
2124
2125         //
2126         // Resolve the target fileobject
2127         //
2128
2129         if( pTargetFileObj == NULL)
2130         {
2131
2132             //
2133             // This is a simple rename. Here the target directory is the same as the source parent directory
2134             // and the name is retrieved from the system buffer information
2135             //
2136
2137             pRenameInfo = (PFILE_RENAME_INFORMATION)Irp->AssociatedIrp.SystemBuffer;
2138
2139             pTargetParentObject = pSrcFcb->ObjectInformation->ParentObjectInformation;
2140
2141             pTargetDcb = pTargetParentObject->Fcb;
2142
2143             uniTargetName.Length = (USHORT)pRenameInfo->FileNameLength;
2144             uniTargetName.Buffer = (PWSTR)&pRenameInfo->FileName;
2145         }
2146         else
2147         {
2148
2149             //
2150             // So here we have the target directory taken from the targetfile object
2151             //
2152
2153             pTargetDcb = (AFSFcb *)pTargetFileObj->FsContext;
2154
2155             pTargetDirCcb = (AFSCcb *)pTargetFileObj->FsContext2;
2156
2157             pTargetParentObject = (AFSObjectInfoCB *)pTargetDcb->ObjectInformation;
2158
2159             //
2160             // Grab the target name which we setup in the IRP_MJ_CREATE handler. By how we set this up
2161             // it is only the target component of the rename operation
2162             //
2163
2164             uniTargetName = *((PUNICODE_STRING)&pTargetFileObj->FileName);
2165         }
2166
2167         //
2168         // We do not allow cross-volume renames to occur
2169         //
2170
2171         if( pTargetParentObject->VolumeCB != pSrcObject->VolumeCB)
2172         {
2173
2174             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2175                           AFS_TRACE_LEVEL_ERROR,
2176                           "AFSSetRenameInfo Attempt to rename directory to different volume %wZ\n",
2177                           &pSrcCcb->DirectoryCB->NameInformation.FileName);
2178
2179             try_return( ntStatus = STATUS_NOT_SAME_DEVICE);
2180         }
2181
2182         AFSAcquireExcl( pTargetParentObject->VolumeCB->VolumeLock,
2183                         TRUE);
2184
2185         bReleaseVolumeLock = TRUE;
2186
2187         ulTargetCRC = AFSGenerateCRC( &uniTargetName,
2188                                       FALSE);
2189
2190         AFSAcquireExcl( pTargetParentObject->Specific.Directory.DirectoryNodeHdr.TreeLock,
2191                         TRUE);
2192
2193         bReleaseTargetDirLock = TRUE;
2194
2195         if( pTargetParentObject != pSrcFcb->ObjectInformation->ParentObjectInformation)
2196         {
2197             AFSAcquireExcl( pSrcFcb->ObjectInformation->ParentObjectInformation->Specific.Directory.DirectoryNodeHdr.TreeLock,
2198                             TRUE);
2199
2200             bReleaseSourceDirLock = TRUE;
2201
2202             pSourceDirLock = pSrcFcb->ObjectInformation->ParentObjectInformation->Specific.Directory.DirectoryNodeHdr.TreeLock;
2203         }
2204
2205         AFSLocateCaseSensitiveDirEntry( pTargetParentObject->Specific.Directory.DirectoryNodeHdr.CaseSensitiveTreeHead,
2206                                         ulTargetCRC,
2207                                         &pTargetDirEntry);
2208
2209         if( pTargetDirEntry == NULL)
2210         {
2211
2212             //
2213             // Missed so perform a case insensitive lookup
2214             //
2215
2216             ulTargetCRC = AFSGenerateCRC( &uniTargetName,
2217                                           TRUE);
2218
2219             AFSLocateCaseInsensitiveDirEntry( pTargetParentObject->Specific.Directory.DirectoryNodeHdr.CaseInsensitiveTreeHead,
2220                                               ulTargetCRC,
2221                                               &pTargetDirEntry);
2222         }
2223
2224         if( pTargetDirEntry == NULL && RtlIsNameLegalDOS8Dot3( &uniTargetName,
2225                                                                NULL,
2226                                                                NULL))
2227         {
2228             //
2229             // Try the short name
2230             //
2231             AFSLocateShortNameDirEntry( pTargetParentObject->Specific.Directory.ShortNameTree,
2232                                         ulTargetCRC,
2233                                         &pTargetDirEntry);
2234         }
2235
2236         //
2237         // Increment our ref count on the dir entry
2238         //
2239
2240         if( pTargetDirEntry != NULL)
2241         {
2242
2243             ASSERT( pTargetParentObject == pTargetDirEntry->ObjectInformation->ParentObjectInformation);
2244
2245             InterlockedIncrement( &pTargetDirEntry->OpenReferenceCount);
2246
2247             if( !bReplaceIfExists)
2248             {
2249
2250                 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2251                               AFS_TRACE_LEVEL_ERROR,
2252                               "AFSSetRenameInfo Attempt to rename directory with target collision %wZ Target %wZ\n",
2253                               &pSrcCcb->DirectoryCB->NameInformation.FileName,
2254                               &pTargetDirEntry->NameInformation.FileName);
2255
2256                 try_return( ntStatus = STATUS_OBJECT_NAME_COLLISION);
2257             }
2258
2259             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2260                           AFS_TRACE_LEVEL_ERROR,
2261                           "AFSSetRenameInfo Target %wZ exists DE %p Count %08lX, performing delete of target\n",
2262                           &pTargetDirEntry->NameInformation.FileName,
2263                           pTargetDirEntry,
2264                           pTargetDirEntry->OpenReferenceCount);
2265
2266             //
2267             // Pull the directory entry from the parent
2268             //
2269
2270             AFSRemoveDirNodeFromParent( pTargetParentObject,
2271                                         pTargetDirEntry,
2272                                         FALSE);
2273
2274             bTargetEntryExists = TRUE;
2275         }
2276         else
2277         {
2278             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2279                           AFS_TRACE_LEVEL_VERBOSE,
2280                           "AFSSetRenameInfo Target does NOT exist, normal rename\n");
2281         }
2282
2283         //
2284         // Extract off the final component name from the Fcb
2285         //
2286
2287         uniSourceName.Length = (USHORT)pSrcCcb->DirectoryCB->NameInformation.FileName.Length;
2288         uniSourceName.MaximumLength = uniSourceName.Length;
2289
2290         uniSourceName.Buffer = pSrcCcb->DirectoryCB->NameInformation.FileName.Buffer;
2291
2292         //
2293         // The quick check to see if they are not really performing a rename
2294         // Do the names match? Only do this where the parent directories are
2295         // the same
2296         //
2297
2298         if( pTargetParentObject == pSrcFcb->ObjectInformation->ParentObjectInformation)
2299         {
2300
2301             bCommonParent = TRUE;
2302
2303             if( FsRtlAreNamesEqual( &uniTargetName,
2304                                     &uniSourceName,
2305                                     FALSE,
2306                                     NULL))
2307             {
2308                 try_return( ntStatus = STATUS_SUCCESS);
2309             }
2310         }
2311         else
2312         {
2313
2314             bCommonParent = FALSE;
2315         }
2316
2317         //
2318         // We need to remove the DirEntry from the parent node, update the index
2319         // and reinsert it into the parent tree. Note that for entries with the
2320         // same parent we do not pull the node from the enumeration list
2321         //
2322
2323         AFSRemoveDirNodeFromParent( pSrcFcb->ObjectInformation->ParentObjectInformation,
2324                                     pSrcCcb->DirectoryCB,
2325                                     !bCommonParent);
2326
2327         //
2328         // OK, this is a simple rename. Issue the rename
2329         // request to the service.
2330         //
2331
2332         ntStatus = AFSNotifyRename( pSrcFcb->ObjectInformation,
2333                                     pSrcFcb->ObjectInformation->ParentObjectInformation,
2334                                     pTargetDcb->ObjectInformation,
2335                                     pSrcCcb->DirectoryCB,
2336                                     &uniTargetName,
2337                                     &stNewFid);
2338
2339         if( !NT_SUCCESS( ntStatus))
2340         {
2341
2342             //
2343             // Attempt to re-insert the directory entry
2344             //
2345
2346             AFSInsertDirectoryNode( pSrcFcb->ObjectInformation->ParentObjectInformation,
2347                                     pSrcCcb->DirectoryCB,
2348                                     !bCommonParent);
2349
2350             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2351                           AFS_TRACE_LEVEL_ERROR,
2352                           "AFSSetRenameInfo Failed rename of %wZ to target %wZ Status %08lX\n",
2353                           &pSrcCcb->DirectoryCB->NameInformation.FileName,
2354                           &uniTargetName,
2355                           ntStatus);
2356
2357             try_return( ntStatus);
2358         }
2359
2360         //
2361         // Set the notification up for the source file
2362         //
2363
2364         if( pSrcCcb->DirectoryCB->ObjectInformation->ParentObjectInformation == pTargetParentObject &&
2365             !bTargetEntryExists)
2366         {
2367
2368             ulNotificationAction = FILE_ACTION_RENAMED_OLD_NAME;
2369         }
2370         else
2371         {
2372
2373             ulNotificationAction = FILE_ACTION_REMOVED;
2374         }
2375
2376         if( pSrcCcb->DirectoryCB->ObjectInformation->FileType == AFS_FILE_TYPE_DIRECTORY)
2377         {
2378
2379             ulNotifyFilter = FILE_NOTIFY_CHANGE_DIR_NAME;
2380         }
2381         else
2382         {
2383
2384             ulNotifyFilter = FILE_NOTIFY_CHANGE_FILE_NAME;
2385         }
2386
2387         AFSFsRtlNotifyFullReportChange( pSrcCcb->DirectoryCB->ObjectInformation->ParentObjectInformation,
2388                                         pSrcCcb,
2389                                         (ULONG)ulNotifyFilter,
2390                                         (ULONG)ulNotificationAction);
2391
2392         //
2393         // Update the name in the dir entry.
2394         //
2395
2396         ntStatus = AFSUpdateDirEntryName( pSrcCcb->DirectoryCB,
2397                                           &uniTargetName);
2398
2399         if( !NT_SUCCESS( ntStatus))
2400         {
2401
2402             //
2403             // Attempt to re-insert the directory entry
2404             //
2405
2406             AFSInsertDirectoryNode( pSrcFcb->ObjectInformation->ParentObjectInformation,
2407                                     pSrcCcb->DirectoryCB,
2408                                     !bCommonParent);
2409
2410             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2411                           AFS_TRACE_LEVEL_ERROR,
2412                           "AFSSetRenameInfo Failed update of dir entry %wZ to target %wZ Status %08lX\n",
2413                           &pSrcCcb->DirectoryCB->NameInformation.FileName,
2414                           &uniTargetName,
2415                           ntStatus);
2416
2417             try_return( ntStatus);
2418         }
2419
2420         //
2421         // Update the object information block, if needed
2422         //
2423
2424         if( !AFSIsEqualFID( &pSrcObject->FileId,
2425                             &stNewFid))
2426         {
2427
2428             //
2429             // Remove the old information entry
2430             //
2431
2432             AFSRemoveHashEntry( &pSrcObject->VolumeCB->ObjectInfoTree.TreeHead,
2433                                 &pSrcObject->TreeEntry);
2434
2435             RtlCopyMemory( &pSrcObject->FileId,
2436                            &stNewFid,
2437                            sizeof( AFSFileID));
2438
2439             //
2440             // Insert the entry into the new object table.
2441             //
2442
2443             pSrcObject->TreeEntry.HashIndex = AFSCreateLowIndex( &pSrcObject->FileId);
2444
2445             if( pSrcObject->VolumeCB->ObjectInfoTree.TreeHead == NULL)
2446             {
2447
2448                 pSrcObject->VolumeCB->ObjectInfoTree.TreeHead = &pSrcObject->TreeEntry;
2449             }
2450             else
2451             {
2452
2453                 AFSInsertHashEntry( pSrcObject->VolumeCB->ObjectInfoTree.TreeHead,
2454                                     &pSrcObject->TreeEntry);
2455             }
2456         }
2457
2458         //
2459         // Update the hash values for the name trees.
2460         //
2461
2462         pSrcCcb->DirectoryCB->CaseSensitiveTreeEntry.HashIndex = AFSGenerateCRC( &pSrcCcb->DirectoryCB->NameInformation.FileName,
2463                                                                                  FALSE);
2464
2465         pSrcCcb->DirectoryCB->CaseInsensitiveTreeEntry.HashIndex = AFSGenerateCRC( &pSrcCcb->DirectoryCB->NameInformation.FileName,
2466                                                                                    TRUE);
2467
2468         if( pSrcCcb->DirectoryCB->NameInformation.ShortNameLength > 0 &&
2469             !RtlIsNameLegalDOS8Dot3( &pSrcCcb->DirectoryCB->NameInformation.FileName,
2470                                      NULL,
2471                                      NULL))
2472         {
2473
2474             uniShortName.Length = pSrcCcb->DirectoryCB->NameInformation.ShortNameLength;
2475             uniShortName.MaximumLength = uniShortName.Length;
2476             uniShortName.Buffer = pSrcCcb->DirectoryCB->NameInformation.ShortName;
2477
2478             pSrcCcb->DirectoryCB->Type.Data.ShortNameTreeEntry.HashIndex = AFSGenerateCRC( &uniShortName,
2479                                                                                            TRUE);
2480
2481             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2482                           AFS_TRACE_LEVEL_VERBOSE,
2483                           "AFSSetRenameInfo Initialized short name hash for %wZ longname %wZ\n",
2484                           &uniShortName,
2485                           &pSrcCcb->DirectoryCB->NameInformation.FileName);
2486         }
2487         else
2488         {
2489
2490             pSrcCcb->DirectoryCB->Type.Data.ShortNameTreeEntry.HashIndex = 0;
2491         }
2492
2493         if( !bCommonParent)
2494         {
2495
2496             //
2497             // Update the file index for the object in the new parent
2498             //
2499
2500             pSrcCcb->DirectoryCB->FileIndex = (ULONG)InterlockedIncrement( &pTargetParentObject->Specific.Directory.DirectoryNodeHdr.ContentIndex);
2501         }
2502
2503         //
2504         // Re-insert the directory entry
2505         //
2506
2507         AFSInsertDirectoryNode( pTargetParentObject,
2508                                 pSrcCcb->DirectoryCB,
2509                                 !bCommonParent);
2510
2511         //
2512         // Update the parent pointer in the source object if they are different
2513         //
2514
2515         if( pSrcCcb->DirectoryCB->ObjectInformation->ParentObjectInformation != pTargetParentObject)
2516         {
2517
2518             InterlockedDecrement( &pSrcCcb->DirectoryCB->ObjectInformation->ParentObjectInformation->Specific.Directory.ChildOpenHandleCount);
2519
2520             InterlockedDecrement( &pSrcCcb->DirectoryCB->ObjectInformation->ParentObjectInformation->Specific.Directory.ChildOpenReferenceCount);
2521
2522             InterlockedIncrement( &pTargetParentObject->Specific.Directory.ChildOpenHandleCount);
2523
2524             InterlockedIncrement( &pTargetParentObject->Specific.Directory.ChildOpenReferenceCount);
2525
2526             pSrcCcb->DirectoryCB->ObjectInformation->ParentObjectInformation = pTargetParentObject;
2527
2528             ulNotificationAction = FILE_ACTION_ADDED;
2529         }
2530         else
2531         {
2532
2533             ulNotificationAction = FILE_ACTION_RENAMED_NEW_NAME;
2534         }
2535
2536         //
2537         // Now update the notification for the target file
2538         //
2539
2540         AFSFsRtlNotifyFullReportChange( pTargetParentObject->ParentObjectInformation,
2541                                         pSrcCcb,
2542                                         (ULONG)ulNotifyFilter,
2543                                         (ULONG)ulNotificationAction);
2544
2545         //
2546         // If we performed the rename of the target because it existed, we now need to
2547         // delete the tmp target we created above
2548         //
2549
2550         if( bTargetEntryExists)
2551         {
2552
2553             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2554                           AFS_TRACE_LEVEL_VERBOSE,
2555                           "AFSSetRenameInfo Setting DELETE flag in dir entry %p name %wZ\n",
2556                           pTargetDirEntry,
2557                           &pTargetDirEntry->NameInformation.FileName);
2558
2559             SetFlag( pTargetDirEntry->Flags, AFS_DIR_ENTRY_DELETED);
2560
2561             //
2562             // Try and purge the cache map if this is a file
2563             //
2564
2565             if( pTargetDirEntry->ObjectInformation->FileType == AFS_FILE_TYPE_FILE &&
2566                 pTargetDirEntry->ObjectInformation->Fcb != NULL &&
2567                 pTargetDirEntry->OpenReferenceCount > 1)
2568             {
2569
2570                 pTargetFcb = pTargetDirEntry->ObjectInformation->Fcb;
2571
2572                 AFSAcquireExcl( &pTargetFcb->NPFcb->Resource,
2573                                 TRUE);
2574
2575                 //
2576                 // Close the section in the event it was mapped
2577                 //
2578
2579                 if( !MmForceSectionClosed( &pTargetFcb->NPFcb->SectionObjectPointers,
2580                                            TRUE))
2581                 {
2582
2583                     AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2584                                   AFS_TRACE_LEVEL_ERROR,
2585                                   "AFSSetRenameInfo Failed to delete section for target file %wZ\n",
2586                                   &pTargetDirEntry->NameInformation.FileName);
2587                 }
2588
2589                 AFSReleaseResource( &pTargetFcb->NPFcb->Resource);
2590             }
2591
2592             ASSERT( pTargetDirEntry->OpenReferenceCount > 0);
2593
2594             InterlockedDecrement( &pTargetDirEntry->OpenReferenceCount); // The count we added above
2595
2596             if( pTargetDirEntry->OpenReferenceCount == 0)
2597             {
2598
2599                 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2600                               AFS_TRACE_LEVEL_VERBOSE,
2601                               "AFSSetRenameInfo Deleting dir entry %p name %wZ\n",
2602                               pTargetDirEntry,
2603                               &pTargetDirEntry->NameInformation.FileName);
2604
2605                 AFSDeleteDirEntry( pTargetParentObject,
2606                                    pTargetDirEntry);
2607             }
2608
2609             pTargetDirEntry = NULL;
2610         }
2611
2612 try_exit:
2613
2614
2615         if( !NT_SUCCESS( ntStatus))
2616         {
2617
2618             if( bTargetEntryExists)
2619             {
2620                 AFSInsertDirectoryNode( pTargetDirEntry->ObjectInformation->ParentObjectInformation,
2621                                         pTargetDirEntry,
2622                                         FALSE);
2623             }
2624         }
2625
2626         if( pTargetDirEntry != NULL)
2627         {
2628
2629             InterlockedDecrement( &pTargetDirEntry->OpenReferenceCount);
2630         }
2631
2632         if( bReleaseVolumeLock)
2633         {
2634             AFSReleaseResource( pTargetParentObject->VolumeCB->VolumeLock);
2635         }
2636
2637         if( bReleaseTargetDirLock)
2638         {
2639             AFSReleaseResource( pTargetParentObject->Specific.Directory.DirectoryNodeHdr.TreeLock);
2640         }
2641
2642         if( bReleaseSourceDirLock)
2643         {
2644             AFSReleaseResource( pSourceDirLock);
2645         }
2646     }
2647
2648     return ntStatus;
2649 }
2650
2651 NTSTATUS
2652 AFSSetPositionInfo( IN PIRP Irp,
2653                     IN AFSDirectoryCB *DirectoryCB)
2654 {
2655     NTSTATUS ntStatus = STATUS_SUCCESS;
2656     PFILE_POSITION_INFORMATION pBuffer;
2657     PIO_STACK_LOCATION pIrpSp = IoGetCurrentIrpStackLocation( Irp);
2658
2659     pBuffer = (PFILE_POSITION_INFORMATION)Irp->AssociatedIrp.SystemBuffer;
2660
2661     pIrpSp->FileObject->CurrentByteOffset.QuadPart = pBuffer->CurrentByteOffset.QuadPart;
2662
2663     return ntStatus;
2664 }
2665
2666 NTSTATUS
2667 AFSSetAllocationInfo( IN PIRP Irp,
2668                       IN AFSDirectoryCB *DirectoryCB)
2669 {
2670     NTSTATUS ntStatus = STATUS_SUCCESS;
2671     PFILE_ALLOCATION_INFORMATION pBuffer;
2672     BOOLEAN bReleasePaging = FALSE;
2673     BOOLEAN bTellCc = FALSE;
2674     BOOLEAN bTellService = FALSE;
2675     PIO_STACK_LOCATION pIrpSp = IoGetCurrentIrpStackLocation( Irp);
2676     PFILE_OBJECT pFileObject = pIrpSp->FileObject;
2677     AFSFcb *pFcb = NULL;
2678     AFSCcb *pCcb = NULL;
2679     LARGE_INTEGER liSaveAlloc;
2680     LARGE_INTEGER liSaveFileSize;
2681     LARGE_INTEGER liSaveVDL;
2682
2683     pBuffer = (PFILE_ALLOCATION_INFORMATION)Irp->AssociatedIrp.SystemBuffer;
2684
2685     pFcb = (AFSFcb *)pIrpSp->FileObject->FsContext;
2686
2687     pCcb = (AFSCcb *)pIrpSp->FileObject->FsContext2;
2688
2689     //
2690     // save values to put back
2691     //
2692     liSaveAlloc = pFcb->Header.AllocationSize;
2693     liSaveFileSize = pFcb->Header.FileSize;
2694     liSaveVDL = pFcb->Header.ValidDataLength;
2695
2696     if( pFcb->Header.AllocationSize.QuadPart == pBuffer->AllocationSize.QuadPart ||
2697         pIrpSp->Parameters.SetFile.AdvanceOnly)
2698     {
2699         return STATUS_SUCCESS ;
2700     }
2701
2702     if( pFcb->Header.AllocationSize.QuadPart > pBuffer->AllocationSize.QuadPart)
2703     {
2704         //
2705         // Truncating the file
2706         //
2707         if( !MmCanFileBeTruncated( pFileObject->SectionObjectPointer,
2708                                    &pBuffer->AllocationSize))
2709         {
2710
2711             ntStatus = STATUS_USER_MAPPED_FILE ;
2712         }
2713         else
2714         {
2715             //
2716             // If this is a truncation we need to grab the paging IO resource.
2717             //
2718             AFSDbgLogMsg( AFS_SUBSYSTEM_LOCK_PROCESSING,
2719                           AFS_TRACE_LEVEL_VERBOSE,
2720                           "AFSSetAllocationInfo Acquiring Fcb PagingIo lock %08lX EXCL %08lX\n",
2721                           &pFcb->NPFcb->PagingResource,
2722                           PsGetCurrentThread());
2723
2724             AFSAcquireExcl( &pFcb->NPFcb->PagingResource,
2725                             TRUE);
2726
2727             bReleasePaging = TRUE;
2728
2729
2730             pFcb->Header.AllocationSize = pBuffer->AllocationSize;
2731
2732             pFcb->ObjectInformation->AllocationSize = pBuffer->AllocationSize;
2733
2734             //
2735             // Tell Cc that Allocation is moved.
2736             //
2737             bTellCc = TRUE;
2738
2739             if( pFcb->Header.FileSize.QuadPart > pBuffer->AllocationSize.QuadPart)
2740             {
2741                 //
2742                 // We are pulling the EOF back as well so we need to tell
2743                 // the service.
2744                 //
2745                 bTellService = TRUE;
2746
2747                 pFcb->Header.FileSize = pBuffer->AllocationSize;
2748
2749                 pFcb->ObjectInformation->EndOfFile = pBuffer->AllocationSize;
2750             }
2751
2752         }
2753     }
2754     else
2755     {
2756         //
2757         // Tell Cc if allocation is increased.
2758         //
2759         bTellCc = pBuffer->AllocationSize.QuadPart > pFcb->Header.AllocationSize.QuadPart;
2760
2761         pFcb->Header.AllocationSize = pBuffer->AllocationSize;
2762
2763         pFcb->ObjectInformation->AllocationSize = pBuffer->AllocationSize;
2764     }
2765
2766     //
2767     // Now Tell the server if we have to
2768     //
2769     if (bTellService)
2770     {
2771         ntStatus = AFSUpdateFileInformation( &pFcb->ObjectInformation->ParentObjectInformation->FileId,
2772                                              pFcb->ObjectInformation,
2773                                              &pFcb->AuthGroup);
2774     }
2775
2776     if (NT_SUCCESS(ntStatus))
2777     {
2778         //
2779         // Trim extents if we told the service - the update has done an implicit
2780         // trim at the service.
2781         //
2782         if (bTellService)
2783         {
2784             AFSTrimExtents( pFcb,
2785                             &pFcb->Header.FileSize);
2786         }
2787
2788         KeQuerySystemTime( &pFcb->ObjectInformation->ChangeTime);
2789
2790         SetFlag( pFcb->Flags, AFS_FCB_FLAG_FILE_MODIFIED | AFS_FCB_FLAG_UPDATE_CHANGE_TIME);
2791
2792         if (bTellCc &&
2793             CcIsFileCached( pFileObject))
2794         {
2795             CcSetFileSizes( pFileObject,
2796                             (PCC_FILE_SIZES)&pFcb->Header.AllocationSize);
2797         }
2798     }
2799     else
2800     {
2801         //
2802         // Put the saved values back
2803         //
2804         pFcb->Header.ValidDataLength = liSaveVDL;
2805         pFcb->Header.FileSize = liSaveFileSize;
2806         pFcb->Header.AllocationSize = liSaveAlloc;
2807         pFcb->ObjectInformation->EndOfFile = liSaveFileSize;
2808         pFcb->ObjectInformation->AllocationSize = liSaveAlloc;
2809     }
2810
2811     if( bReleasePaging)
2812     {
2813
2814         AFSReleaseResource( &pFcb->NPFcb->PagingResource);
2815     }
2816
2817     return ntStatus;
2818 }
2819
2820 NTSTATUS
2821 AFSSetEndOfFileInfo( IN PIRP Irp,
2822                      IN AFSDirectoryCB *DirectoryCB)
2823 {
2824     NTSTATUS ntStatus = STATUS_SUCCESS;
2825     PFILE_END_OF_FILE_INFORMATION pBuffer;
2826     PIO_STACK_LOCATION pIrpSp = IoGetCurrentIrpStackLocation( Irp);
2827     PFILE_OBJECT pFileObject = pIrpSp->FileObject;
2828     LARGE_INTEGER liSaveSize;
2829     LARGE_INTEGER liSaveVDL;
2830     LARGE_INTEGER liSaveAlloc;
2831     BOOLEAN bModified = FALSE;
2832     BOOLEAN bReleasePaging = FALSE;
2833     BOOLEAN bTruncated = FALSE;
2834     AFSFcb *pFcb = NULL;
2835     AFSCcb *pCcb = NULL;
2836
2837     pFcb = (AFSFcb *)pIrpSp->FileObject->FsContext;
2838
2839     pCcb = (AFSCcb *)pIrpSp->FileObject->FsContext2;
2840
2841     pBuffer = (PFILE_END_OF_FILE_INFORMATION)Irp->AssociatedIrp.SystemBuffer;
2842
2843     liSaveSize = pFcb->Header.FileSize;
2844     liSaveAlloc = pFcb->Header.AllocationSize;
2845     liSaveVDL = pFcb->Header.ValidDataLength;
2846
2847     if( pFcb->Header.FileSize.QuadPart != pBuffer->EndOfFile.QuadPart &&
2848         !pIrpSp->Parameters.SetFile.AdvanceOnly)
2849     {
2850
2851         if( pBuffer->EndOfFile.QuadPart < pFcb->Header.FileSize.QuadPart)
2852         {
2853
2854             // Truncating the file
2855             if( !MmCanFileBeTruncated( pFileObject->SectionObjectPointer,
2856                                        &pBuffer->EndOfFile))
2857             {
2858
2859                 ntStatus = STATUS_USER_MAPPED_FILE;
2860             }
2861             else
2862             {
2863                 //
2864                 // If this is a truncation we need to grab the paging
2865                 // IO resource.
2866                 //
2867                 AFSDbgLogMsg( AFS_SUBSYSTEM_LOCK_PROCESSING,
2868                               AFS_TRACE_LEVEL_VERBOSE,
2869                               "AFSSetAllocationInfo Acquiring Fcb PagingIo lock %08lX EXCL %08lX\n",
2870                               &pFcb->NPFcb->PagingResource,
2871                               PsGetCurrentThread());
2872
2873                 AFSAcquireExcl( &pFcb->NPFcb->PagingResource,
2874                                 TRUE);
2875
2876                 bReleasePaging = TRUE;
2877
2878                 pFcb->Header.AllocationSize = pBuffer->EndOfFile;
2879
2880                 pFcb->Header.FileSize = pBuffer->EndOfFile;
2881
2882                 pFcb->ObjectInformation->EndOfFile = pBuffer->EndOfFile;
2883
2884                 pFcb->ObjectInformation->AllocationSize = pBuffer->EndOfFile;
2885
2886                 if( pFcb->Header.ValidDataLength.QuadPart > pFcb->Header.FileSize.QuadPart)
2887                 {
2888
2889                     pFcb->Header.ValidDataLength = pFcb->Header.FileSize;
2890                 }
2891
2892                 bTruncated = TRUE;
2893
2894                 bModified = TRUE;
2895             }
2896         }
2897         else
2898         {
2899             //
2900             // extending the file, move EOF
2901             //
2902
2903             pFcb->Header.FileSize = pBuffer->EndOfFile;
2904
2905             pFcb->ObjectInformation->EndOfFile = pBuffer->EndOfFile;
2906
2907             if (pFcb->Header.FileSize.QuadPart > pFcb->Header.AllocationSize.QuadPart)
2908             {
2909                 //
2910                 // And Allocation as needed.
2911                 //
2912                 pFcb->Header.AllocationSize = pBuffer->EndOfFile;
2913
2914                 pFcb->ObjectInformation->AllocationSize = pBuffer->EndOfFile;
2915             }
2916
2917             bModified = TRUE;
2918         }
2919     }
2920
2921     if (bModified)
2922     {
2923
2924         KeQuerySystemTime( &pFcb->ObjectInformation->ChangeTime);
2925
2926         SetFlag( pFcb->Flags, AFS_FCB_FLAG_FILE_MODIFIED | AFS_FCB_FLAG_UPDATE_CHANGE_TIME);
2927
2928         //
2929         // Tell the server
2930         //
2931
2932         ntStatus = AFSUpdateFileInformation( &pFcb->ObjectInformation->ParentObjectInformation->FileId,
2933                                              pFcb->ObjectInformation,
2934                                              &pFcb->AuthGroup);
2935
2936         if( NT_SUCCESS(ntStatus))
2937         {
2938             //
2939             // We are now good to go so tell CC.
2940             //
2941             CcSetFileSizes( pFileObject,
2942                             (PCC_FILE_SIZES)&pFcb->Header.AllocationSize);
2943
2944             //
2945             // And give up those extents
2946             //
2947             if( bTruncated)
2948             {
2949
2950                 AFSTrimExtents( pFcb,
2951                                 &pFcb->Header.FileSize);
2952             }
2953         }
2954         else
2955         {
2956             pFcb->Header.ValidDataLength = liSaveVDL;
2957             pFcb->Header.FileSize = liSaveSize;
2958             pFcb->Header.AllocationSize = liSaveAlloc;
2959             pFcb->ObjectInformation->EndOfFile = liSaveSize;
2960             pFcb->ObjectInformation->AllocationSize = liSaveAlloc;
2961         }
2962     }
2963
2964     if( bReleasePaging)
2965     {
2966
2967         AFSReleaseResource( &pFcb->NPFcb->PagingResource);
2968     }
2969
2970     return ntStatus;
2971 }
2972
2973 NTSTATUS
2974 AFSProcessShareSetInfo( IN IRP *Irp,
2975                         IN AFSFcb *Fcb,
2976                         IN AFSCcb *Ccb)
2977 {
2978
2979     NTSTATUS ntStatus = STATUS_SUCCESS;
2980     PIO_STACK_LOCATION pIrpSp = IoGetCurrentIrpStackLocation( Irp);
2981     ULONG ulOutputBufferLen = 0, ulInputBufferLen;
2982     FILE_INFORMATION_CLASS ulFileInformationClass;
2983     void *pPipeInfo = NULL;
2984
2985     __Enter
2986     {
2987         ulFileInformationClass = pIrpSp->Parameters.SetFile.FileInformationClass;
2988
2989         AFSDbgLogMsg( AFS_SUBSYSTEM_PIPE_PROCESSING,
2990                       AFS_TRACE_LEVEL_VERBOSE,
2991                       "AFSProcessShareSetInfo On pipe %wZ Class %08lX\n",
2992                       &Ccb->DirectoryCB->NameInformation.FileName,
2993                       ulFileInformationClass);
2994
2995         pPipeInfo = AFSLockSystemBuffer( Irp,
2996                                          pIrpSp->Parameters.SetFile.Length);
2997
2998         if( pPipeInfo == NULL)
2999         {
3000
3001             AFSDbgLogMsg( AFS_SUBSYSTEM_PIPE_PROCESSING,
3002                           AFS_TRACE_LEVEL_ERROR,
3003                           "AFSProcessShareSetInfo Failed to lock buffer on pipe %wZ\n",
3004                           &Ccb->DirectoryCB->NameInformation.FileName);
3005
3006             try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
3007         }
3008
3009         //
3010         // Send the request to the service
3011         //
3012
3013         ntStatus = AFSNotifySetPipeInfo( Ccb,
3014                                          (ULONG)ulFileInformationClass,
3015                                          pIrpSp->Parameters.SetFile.Length,
3016                                          pPipeInfo);
3017
3018         if( !NT_SUCCESS( ntStatus))
3019         {
3020
3021             AFSDbgLogMsg( AFS_SUBSYSTEM_PIPE_PROCESSING,
3022                           AFS_TRACE_LEVEL_ERROR,
3023                           "AFSProcessShareSetInfo Failed to send request to service on pipe %wZ Status %08lX\n",
3024                           &Ccb->DirectoryCB->NameInformation.FileName,
3025                           ntStatus);
3026
3027             try_return( ntStatus);
3028         }
3029
3030         AFSDbgLogMsg( AFS_SUBSYSTEM_PIPE_PROCESSING,
3031                       AFS_TRACE_LEVEL_VERBOSE,
3032                       "AFSProcessShareSetInfo Completed request on pipe %wZ Class %08lX\n",
3033                       &Ccb->DirectoryCB->NameInformation.FileName,
3034                       ulFileInformationClass);
3035
3036 try_exit:
3037
3038         NOTHING;
3039     }
3040
3041     return ntStatus;
3042 }
3043
3044 NTSTATUS
3045 AFSProcessShareQueryInfo( IN IRP *Irp,
3046                           IN AFSFcb *Fcb,
3047                           IN AFSCcb *Ccb)
3048 {
3049
3050     NTSTATUS ntStatus = STATUS_SUCCESS;
3051     PIO_STACK_LOCATION pIrpSp = IoGetCurrentIrpStackLocation( Irp);
3052     ULONG ulOutputBufferLen = 0, ulInputBufferLen;
3053     FILE_INFORMATION_CLASS ulFileInformationClass;
3054     void *pPipeInfo = NULL;
3055
3056     __Enter
3057     {
3058
3059         ulFileInformationClass = pIrpSp->Parameters.QueryFile.FileInformationClass;
3060
3061         AFSDbgLogMsg( AFS_SUBSYSTEM_PIPE_PROCESSING,
3062                       AFS_TRACE_LEVEL_VERBOSE,
3063                       "AFSProcessShareQueryInfo On pipe %wZ Class %08lX\n",
3064                       &Ccb->DirectoryCB->NameInformation.FileName,
3065                       ulFileInformationClass);
3066
3067         pPipeInfo = AFSLockSystemBuffer( Irp,
3068                                          pIrpSp->Parameters.QueryFile.Length);
3069
3070         if( pPipeInfo == NULL)
3071         {
3072
3073             AFSDbgLogMsg( AFS_SUBSYSTEM_PIPE_PROCESSING,
3074                           AFS_TRACE_LEVEL_ERROR,
3075                           "AFSProcessShareQueryInfo Failed to lock buffer on pipe %wZ\n",
3076                           &Ccb->DirectoryCB->NameInformation.FileName);
3077
3078             try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
3079         }
3080
3081         //
3082         // Send the request to the service
3083         //
3084
3085         ntStatus = AFSNotifyQueryPipeInfo( Ccb,
3086                                            (ULONG)ulFileInformationClass,
3087                                            pIrpSp->Parameters.QueryFile.Length,
3088                                            pPipeInfo,
3089                                            (ULONG *)&Irp->IoStatus.Information);
3090
3091         if( !NT_SUCCESS( ntStatus))
3092         {
3093
3094             AFSDbgLogMsg( AFS_SUBSYSTEM_PIPE_PROCESSING,
3095                           AFS_TRACE_LEVEL_ERROR,
3096                           "AFSProcessShareQueryInfo Failed to send request to service on pipe %wZ Status %08lX\n",
3097                           &Ccb->DirectoryCB->NameInformation.FileName,
3098                           ntStatus);
3099
3100             try_return( ntStatus);
3101         }
3102
3103         AFSDbgLogMsg( AFS_SUBSYSTEM_PIPE_PROCESSING,
3104                       AFS_TRACE_LEVEL_VERBOSE,
3105                       "AFSProcessShareQueryInfo Completed request on pipe %wZ Class %08lX\n",
3106                       &Ccb->DirectoryCB->NameInformation.FileName,
3107                       ulFileInformationClass);
3108
3109 try_exit:
3110
3111         NOTHING;
3112     }
3113
3114     return ntStatus;
3115 }
3116
3117 NTSTATUS
3118 AFSProcessPIOCtlQueryInfo( IN IRP *Irp,
3119                            IN AFSFcb *Fcb,
3120                            IN AFSCcb *Ccb,
3121                            IN OUT LONG *Length)
3122 {
3123
3124     NTSTATUS ntStatus = STATUS_SUCCESS;
3125     PIO_STACK_LOCATION pIrpSp = IoGetCurrentIrpStackLocation( Irp);
3126     FILE_INFORMATION_CLASS ulFileInformationClass;
3127
3128     __Enter
3129     {
3130
3131         ulFileInformationClass = pIrpSp->Parameters.QueryFile.FileInformationClass;
3132
3133         switch( ulFileInformationClass)
3134         {
3135
3136             case FileBasicInformation:
3137             {
3138
3139                 AFSDbgLogMsg( AFS_SUBSYSTEM_PIOCTL_PROCESSING,
3140                               AFS_TRACE_LEVEL_VERBOSE,
3141                               "AFSProcessPIOCtlQueryInfo (FileBasicInformation)\n");
3142
3143                 if ( *Length >= sizeof( FILE_BASIC_INFORMATION))
3144                 {
3145                     PFILE_BASIC_INFORMATION pBasic = (PFILE_BASIC_INFORMATION)Irp->AssociatedIrp.SystemBuffer;
3146
3147                     pBasic->CreationTime.QuadPart = 0;
3148                     pBasic->LastAccessTime.QuadPart = 0;
3149                     pBasic->ChangeTime.QuadPart = 0;
3150                     pBasic->LastWriteTime.QuadPart = 0;
3151                     pBasic->FileAttributes = FILE_ATTRIBUTE_SYSTEM;
3152
3153                     *Length -= sizeof( FILE_BASIC_INFORMATION);
3154                 }
3155                 else
3156                 {
3157                     ntStatus = STATUS_BUFFER_TOO_SMALL;
3158                 }
3159
3160                 break;
3161             }
3162
3163             case FileStandardInformation:
3164             {
3165
3166                 AFSDbgLogMsg( AFS_SUBSYSTEM_PIOCTL_PROCESSING,
3167                               AFS_TRACE_LEVEL_VERBOSE,
3168                               "AFSProcessPIOCtlQueryInfo (FileStandardInformation)\n");
3169
3170                 if ( *Length >= sizeof( FILE_STANDARD_INFORMATION))
3171                 {
3172                     PFILE_STANDARD_INFORMATION pStandard = (PFILE_STANDARD_INFORMATION)Irp->AssociatedIrp.SystemBuffer;
3173
3174                     pStandard->NumberOfLinks = 1;
3175                     pStandard->DeletePending = 0;
3176                     pStandard->AllocationSize.QuadPart = 0;
3177                     pStandard->EndOfFile.QuadPart = 0;
3178                     pStandard->Directory = 0;
3179
3180                     *Length -= sizeof( FILE_STANDARD_INFORMATION);
3181                 }
3182                 else
3183                 {
3184                     ntStatus = STATUS_BUFFER_TOO_SMALL;
3185                 }
3186
3187                 break;
3188             }
3189
3190             case FileNameInformation:
3191             {
3192
3193                 ULONG ulCopyLength = 0;
3194                 AFSFcb *pFcb = NULL;
3195                 AFSCcb *pCcb = NULL;
3196                 USHORT usFullNameLength = 0;
3197                 PFILE_NAME_INFORMATION pNameInfo = (PFILE_NAME_INFORMATION)Irp->AssociatedIrp.SystemBuffer;
3198                 UNICODE_STRING uniName;
3199
3200                 AFSDbgLogMsg( AFS_SUBSYSTEM_PIOCTL_PROCESSING,
3201                               AFS_TRACE_LEVEL_VERBOSE,
3202                               "AFSProcessPIOCtlQueryInfo (FileNameInformation)\n");
3203
3204                 pFcb = (AFSFcb *)pIrpSp->FileObject->FsContext;
3205                 pCcb = (AFSCcb *)pIrpSp->FileObject->FsContext2;
3206
3207                 if( *Length < FIELD_OFFSET( FILE_NAME_INFORMATION, FileName))
3208                 {
3209                     ntStatus = STATUS_BUFFER_TOO_SMALL;
3210                     break;
3211                 }
3212
3213                 RtlZeroMemory( pNameInfo,
3214                                *Length);
3215
3216                 usFullNameLength = sizeof( WCHAR) +
3217                                             AFSServerName.Length +
3218                                             pCcb->FullFileName.Length;
3219
3220                 if( *Length >= (LONG)(FIELD_OFFSET( FILE_NAME_INFORMATION, FileName) + (LONG)usFullNameLength))
3221                 {
3222                     ulCopyLength = (LONG)usFullNameLength;
3223                 }
3224                 else
3225                 {
3226                     ulCopyLength = *Length - FIELD_OFFSET( FILE_NAME_INFORMATION, FileName);
3227                     ntStatus = STATUS_BUFFER_OVERFLOW;
3228                 }
3229
3230                 pNameInfo->FileNameLength = (ULONG)usFullNameLength;
3231
3232                 *Length -= FIELD_OFFSET( FILE_NAME_INFORMATION, FileName);
3233
3234                 if( ulCopyLength > 0)
3235                 {
3236
3237                     pNameInfo->FileName[ 0] = L'\\';
3238                     ulCopyLength -= sizeof( WCHAR);
3239
3240                     *Length -= sizeof( WCHAR);
3241
3242                     if( ulCopyLength >= AFSServerName.Length)
3243                     {
3244
3245                         RtlCopyMemory( &pNameInfo->FileName[ 1],
3246                                        AFSServerName.Buffer,
3247                                        AFSServerName.Length);
3248
3249                         ulCopyLength -= AFSServerName.Length;
3250                         *Length -= AFSServerName.Length;
3251
3252                         if( ulCopyLength >= pCcb->FullFileName.Length)
3253                         {
3254
3255                             RtlCopyMemory( &pNameInfo->FileName[ 1 + (AFSServerName.Length/sizeof( WCHAR))],
3256                                            pCcb->FullFileName.Buffer,
3257                                            pCcb->FullFileName.Length);
3258
3259                             ulCopyLength -= pCcb->FullFileName.Length;
3260                             *Length -= pCcb->FullFileName.Length;
3261
3262                             uniName.Length = (USHORT)pNameInfo->FileNameLength;
3263                             uniName.MaximumLength = uniName.Length;
3264                             uniName.Buffer = pNameInfo->FileName;
3265                         }
3266                         else