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                                                  &pCcb->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                                                        &pCcb->AuthGroup,
 800                                                        &stFileInfo)))
 801             {
 802                 ulFileAttribs = stFileInfo.FileAttributes;
 803
 804                 ulFileAttribs |= FILE_ATTRIBUTE_REPARSE_POINT;
 805             }
 806
 807             AFSAcquireShared( &pFcb->NPFcb->Resource,
 808                               TRUE);
 809         }
 810
 811
 812         AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
 813                       AFS_TRACE_LEVEL_VERBOSE_2,
 814                       "AFSQueryBasicInfo %wZ Type 0x%x Attrib 0x%x -> 0x%x\n",
 815                       &pCcb->DirectoryCB->NameInformation.FileName,
 816                       pCcb->DirectoryCB->ObjectInformation->FileType,
 817                       pCcb->DirectoryCB->ObjectInformation->FileAttributes,
 818                       ulFileAttribs);
 819
 820         Buffer->CreationTime = DirectoryCB->ObjectInformation->CreationTime;
 821         Buffer->LastAccessTime = DirectoryCB->ObjectInformation->LastAccessTime;
 822         Buffer->LastWriteTime = DirectoryCB->ObjectInformation->LastWriteTime;
 823         Buffer->ChangeTime = DirectoryCB->ObjectInformation->ChangeTime;
 824         Buffer->FileAttributes = ulFileAttribs;
 825
 826         if( DirectoryCB->NameInformation.FileName.Buffer[ 0] == L'.' &&
 827             BooleanFlagOn( pDeviceExt->DeviceFlags, AFS_DEVICE_FLAG_HIDE_DOT_NAMES))
 828         {
 829
 830             if ( Buffer->FileAttributes != FILE_ATTRIBUTE_NORMAL)
 831             {
 832                 Buffer->FileAttributes |= FILE_ATTRIBUTE_HIDDEN;
 833             }
 834             else
 835             {
 836                 Buffer->FileAttributes = FILE_ATTRIBUTE_HIDDEN;
 837             }
 838         }
 839
 840         *Length -= sizeof( FILE_BASIC_INFORMATION);
 841     }
 842     else
 843     {
 844
 845         ntStatus = STATUS_BUFFER_TOO_SMALL;
 846     }
 847
 848     return ntStatus;
 849 }
 850
 851 NTSTATUS
 852 AFSQueryStandardInfo( IN PIRP Irp,
 853                       IN AFSDirectoryCB *DirectoryCB,
 854                       IN OUT PFILE_STANDARD_INFORMATION Buffer,
 855                       IN OUT PLONG Length)
 856 {
 857
 858     NTSTATUS ntStatus = STATUS_SUCCESS;
 859     AFSFcb *pFcb = NULL;
 860     AFSCcb *pCcb = NULL;
 861     PIO_STACK_LOCATION pIrpSp = IoGetCurrentIrpStackLocation( Irp);
 862     AFSFileInfoCB stFileInfo;
 863     AFSDirectoryCB *pParentDirectoryCB = NULL;
 864     UNICODE_STRING uniParentPath;
 865     ULONG ulFileAttribs = 0;
 866
 867     if( *Length >= sizeof( FILE_STANDARD_INFORMATION))
 868     {
 869
 870         pFcb = (AFSFcb *)pIrpSp->FileObject->FsContext;
 871         pCcb = (AFSCcb *)pIrpSp->FileObject->FsContext2;
 872
 873         RtlZeroMemory( Buffer,
 874                        *Length);
 875
 876         Buffer->NumberOfLinks = 1;
 877         Buffer->DeletePending = BooleanFlagOn( pCcb->DirectoryCB->Flags, AFS_DIR_ENTRY_PENDING_DELETE);
 878
 879         Buffer->AllocationSize.QuadPart = (ULONGLONG)((DirectoryCB->ObjectInformation->AllocationSize.QuadPart/PAGE_SIZE) + 1) * PAGE_SIZE;
 880
 881         Buffer->EndOfFile = DirectoryCB->ObjectInformation->EndOfFile;
 882
 883         ulFileAttribs = DirectoryCB->ObjectInformation->FileAttributes;
 884
 885         if( DirectoryCB->ObjectInformation->FileType == AFS_FILE_TYPE_SYMLINK)
 886         {
 887
 888             pParentDirectoryCB = AFSGetParentEntry( pCcb->NameArray);
 889
 890             AFSRetrieveParentPath( &pCcb->FullFileName,
 891                                    &uniParentPath);
 892
 893             RtlZeroMemory( &stFileInfo,
 894                            sizeof( AFSFileInfoCB));
 895
 896             //
 897             // Can't hold the Fcb while evaluating the path, leads to lock inversion
 898             //
 899
 900             AFSReleaseResource( &pFcb->NPFcb->Resource);
 901
 902             if( NT_SUCCESS( AFSRetrieveFileAttributes( pParentDirectoryCB,
 903                                                        DirectoryCB,
 904                                                        &uniParentPath,
 905                                                        NULL,
 906                                                        &pCcb->AuthGroup,
 907                                                        &stFileInfo)))
 908             {
 909                 ulFileAttribs = stFileInfo.FileAttributes;
 910             }
 911
 912             AFSAcquireShared( &pFcb->NPFcb->Resource,
 913                               TRUE);
 914         }
 915
 916         AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
 917                       AFS_TRACE_LEVEL_VERBOSE_2,
 918                       "AFSQueryStandardInfo %wZ Type 0x%x Attrib 0x%x -> 0x%x\n",
 919                       &pCcb->DirectoryCB->NameInformation.FileName,
 920                       pCcb->DirectoryCB->ObjectInformation->FileType,
 921                       pCcb->DirectoryCB->ObjectInformation->FileAttributes,
 922                       ulFileAttribs);
 923
 924         Buffer->Directory = BooleanFlagOn( ulFileAttribs, FILE_ATTRIBUTE_DIRECTORY);
 925
 926         *Length -= sizeof( FILE_STANDARD_INFORMATION);
 927     }
 928     else
 929     {
 930
 931         ntStatus = STATUS_BUFFER_TOO_SMALL;
 932     }
 933
 934     return ntStatus;
 935 }
 936
 937 NTSTATUS
 938 AFSQueryInternalInfo( IN PIRP Irp,
 939                       IN AFSFcb *Fcb,
 940                       IN OUT PFILE_INTERNAL_INFORMATION Buffer,
 941                       IN OUT PLONG Length)
 942 {
 943
 944     NTSTATUS ntStatus = STATUS_SUCCESS;
 945
 946     if( *Length >= sizeof( FILE_INTERNAL_INFORMATION))
 947     {
 948
 949         Buffer->IndexNumber.HighPart = Fcb->ObjectInformation->FileId.Volume;
 950
 951         Buffer->IndexNumber.LowPart = Fcb->ObjectInformation->FileId.Vnode;
 952
 953         *Length -= sizeof( FILE_INTERNAL_INFORMATION);
 954     }
 955     else
 956     {
 957
 958         ntStatus = STATUS_BUFFER_TOO_SMALL;
 959     }
 960
 961     return ntStatus;
 962 }
 963
 964 NTSTATUS
 965 AFSQueryEaInfo( IN PIRP Irp,
 966                 IN AFSDirectoryCB *DirectoryCB,
 967                 IN OUT PFILE_EA_INFORMATION Buffer,
 968                 IN OUT PLONG Length)
 969 {
 970
 971     NTSTATUS ntStatus = STATUS_SUCCESS;
 972
 973     RtlZeroMemory( Buffer,
 974                    *Length);
 975
 976     if( *Length >= sizeof( FILE_EA_INFORMATION))
 977     {
 978
 979         Buffer->EaSize = 0;
 980
 981         *Length -= sizeof( FILE_EA_INFORMATION);
 982     }
 983     else
 984     {
 985
 986         ntStatus = STATUS_BUFFER_TOO_SMALL;
 987     }
 988
 989     return ntStatus;
 990 }
 991
 992 NTSTATUS
 993 AFSQueryPositionInfo( IN PIRP Irp,
 994                       IN AFSFcb *Fcb,
 995                       IN OUT PFILE_POSITION_INFORMATION Buffer,
 996                       IN OUT PLONG Length)
 997 {
 998
 999     NTSTATUS ntStatus = STATUS_SUCCESS;
1000     PIO_STACK_LOCATION pIrpSp = IoGetCurrentIrpStackLocation( Irp);
1001
1002     if( *Length >= sizeof( FILE_POSITION_INFORMATION))
1003     {
1004
1005         RtlZeroMemory( Buffer,
1006                        *Length);
1007
1008         Buffer->CurrentByteOffset.QuadPart = pIrpSp->FileObject->CurrentByteOffset.QuadPart;
1009
1010         *Length -= sizeof( FILE_POSITION_INFORMATION);
1011     }
1012     else
1013     {
1014
1015         ntStatus = STATUS_BUFFER_TOO_SMALL;
1016     }
1017
1018     return ntStatus;
1019 }
1020
1021 NTSTATUS
1022 AFSQueryAccess( IN PIRP Irp,
1023                 IN AFSFcb *Fcb,
1024                 IN OUT PFILE_ACCESS_INFORMATION Buffer,
1025                 IN OUT PLONG Length)
1026 {
1027
1028     NTSTATUS ntStatus = STATUS_SUCCESS;
1029
1030     if( *Length >= sizeof( FILE_ACCESS_INFORMATION))
1031     {
1032
1033         RtlZeroMemory( Buffer,
1034                        *Length);
1035
1036         Buffer->AccessFlags = 0;
1037
1038         *Length -= sizeof( FILE_ACCESS_INFORMATION);
1039     }
1040     else
1041     {
1042
1043         ntStatus = STATUS_BUFFER_TOO_SMALL;
1044     }
1045
1046     return ntStatus;
1047 }
1048
1049 NTSTATUS
1050 AFSQueryMode( IN PIRP Irp,
1051               IN AFSFcb *Fcb,
1052               IN OUT PFILE_MODE_INFORMATION Buffer,
1053               IN OUT PLONG Length)
1054 {
1055
1056     NTSTATUS ntStatus = STATUS_SUCCESS;
1057
1058     if( *Length >= sizeof( FILE_MODE_INFORMATION))
1059     {
1060
1061         RtlZeroMemory( Buffer,
1062                        *Length);
1063
1064         Buffer->Mode = 0;
1065
1066         *Length -= sizeof( FILE_MODE_INFORMATION);
1067     }
1068     else
1069     {
1070
1071         ntStatus = STATUS_BUFFER_TOO_SMALL;
1072     }
1073
1074     return ntStatus;
1075 }
1076
1077 NTSTATUS
1078 AFSQueryAlignment( IN PIRP Irp,
1079                    IN AFSFcb *Fcb,
1080                    IN OUT PFILE_ALIGNMENT_INFORMATION Buffer,
1081                    IN OUT PLONG Length)
1082 {
1083
1084     NTSTATUS ntStatus = STATUS_SUCCESS;
1085
1086     if( *Length >= sizeof( FILE_ALIGNMENT_INFORMATION))
1087     {
1088
1089         RtlZeroMemory( Buffer,
1090                        *Length);
1091
1092         Buffer->AlignmentRequirement = 1;
1093
1094         *Length -= sizeof( FILE_ALIGNMENT_INFORMATION);
1095     }
1096     else
1097     {
1098
1099         ntStatus = STATUS_BUFFER_TOO_SMALL;
1100     }
1101
1102     return ntStatus;
1103 }
1104
1105 NTSTATUS
1106 AFSQueryNameInfo( IN PIRP Irp,
1107                   IN AFSDirectoryCB *DirectoryCB,
1108                   IN OUT PFILE_NAME_INFORMATION Buffer,
1109                   IN OUT PLONG Length)
1110 {
1111
1112     NTSTATUS ntStatus = STATUS_SUCCESS;
1113     ULONG ulCopyLength = 0;
1114     ULONG cchCopied = 0;
1115     AFSFcb *pFcb = NULL;
1116     AFSCcb *pCcb = NULL;
1117     IO_STACK_LOCATION *pIrpSp = IoGetCurrentIrpStackLocation( Irp);
1118     BOOLEAN bAddLeadingSlash = FALSE;
1119     BOOLEAN bAddTrailingSlash = FALSE;
1120     USHORT usFullNameLength = 0;
1121
1122     pFcb = (AFSFcb *)pIrpSp->FileObject->FsContext;
1123
1124     pCcb = (AFSCcb *)pIrpSp->FileObject->FsContext2;
1125
1126     if( *Length >= FIELD_OFFSET( FILE_NAME_INFORMATION, FileName))
1127     {
1128
1129         RtlZeroMemory( Buffer,
1130                        *Length);
1131
1132         if( pCcb->FullFileName.Length == 0 ||
1133             pCcb->FullFileName.Buffer[ 0] != L'\\')
1134         {
1135             bAddLeadingSlash = TRUE;
1136         }
1137
1138         if( pFcb->ObjectInformation->FileType == AFS_FILE_TYPE_DIRECTORY &&
1139             pCcb->FullFileName.Length > 0 &&
1140             pCcb->FullFileName.Buffer[ (pCcb->FullFileName.Length/sizeof( WCHAR)) - 1] != L'\\')
1141         {
1142             bAddTrailingSlash = TRUE;
1143         }
1144
1145         usFullNameLength = sizeof( WCHAR) +
1146                                     AFSServerName.Length +
1147                                     pCcb->FullFileName.Length;
1148
1149         if( bAddLeadingSlash)
1150         {
1151             usFullNameLength += sizeof( WCHAR);
1152         }
1153
1154         if( bAddTrailingSlash)
1155         {
1156             usFullNameLength += sizeof( WCHAR);
1157         }
1158
1159         if( *Length >= (LONG)(FIELD_OFFSET( FILE_NAME_INFORMATION, FileName) + (LONG)usFullNameLength))
1160         {
1161
1162             ulCopyLength = (LONG)usFullNameLength;
1163         }
1164         else
1165         {
1166
1167             ulCopyLength = *Length - FIELD_OFFSET( FILE_NAME_INFORMATION, FileName);
1168
1169             ntStatus = STATUS_BUFFER_OVERFLOW;
1170         }
1171
1172         Buffer->FileNameLength = (ULONG)usFullNameLength;
1173
1174         *Length -= FIELD_OFFSET( FILE_NAME_INFORMATION, FileName);
1175
1176         if( ulCopyLength > 0)
1177         {
1178
1179             Buffer->FileName[ 0] = L'\\';
1180             ulCopyLength -= sizeof( WCHAR);
1181
1182             *Length -= sizeof( WCHAR);
1183             cchCopied += 1;
1184
1185             if( ulCopyLength >= AFSServerName.Length)
1186             {
1187
1188                 RtlCopyMemory( &Buffer->FileName[ 1],
1189                                AFSServerName.Buffer,
1190                                AFSServerName.Length);
1191
1192                 ulCopyLength -= AFSServerName.Length;
1193                 *Length -= AFSServerName.Length;
1194                 cchCopied += AFSServerName.Length/sizeof( WCHAR);
1195
1196                 if ( ulCopyLength > 0 &&
1197                      bAddLeadingSlash)
1198                 {
1199
1200                     Buffer->FileName[ cchCopied] = L'\\';
1201
1202                     ulCopyLength -= sizeof( WCHAR);
1203                     *Length -= sizeof( WCHAR);
1204                     cchCopied++;
1205                 }
1206
1207                 if( ulCopyLength >= pCcb->FullFileName.Length)
1208                 {
1209
1210                     RtlCopyMemory( &Buffer->FileName[ cchCopied],
1211                                    pCcb->FullFileName.Buffer,
1212                                    pCcb->FullFileName.Length);
1213
1214                     ulCopyLength -= pCcb->FullFileName.Length;
1215                     *Length -= pCcb->FullFileName.Length;
1216                     cchCopied += pCcb->FullFileName.Length/sizeof( WCHAR);
1217
1218                     if( ulCopyLength > 0 &&
1219                         bAddTrailingSlash)
1220                     {
1221                         Buffer->FileName[ cchCopied] = L'\\';
1222
1223                         *Length -= sizeof( WCHAR);
1224                     }
1225                 }
1226                 else
1227                 {
1228
1229                     RtlCopyMemory( &Buffer->FileName[ cchCopied],
1230                                    pCcb->FullFileName.Buffer,
1231                                    ulCopyLength);
1232
1233                     *Length -= ulCopyLength;
1234                 }
1235             }
1236         }
1237     }
1238     else
1239     {
1240
1241         ntStatus = STATUS_BUFFER_TOO_SMALL;
1242     }
1243
1244     return ntStatus;
1245 }
1246
1247 NTSTATUS
1248 AFSQueryShortNameInfo( IN PIRP Irp,
1249                        IN AFSDirectoryCB *DirectoryCB,
1250                        IN OUT PFILE_NAME_INFORMATION Buffer,
1251                        IN OUT PLONG Length)
1252 {
1253
1254     NTSTATUS ntStatus = STATUS_BUFFER_TOO_SMALL;
1255     ULONG ulCopyLength = 0;
1256
1257     RtlZeroMemory( Buffer,
1258                    *Length);
1259
1260     if( DirectoryCB->NameInformation.ShortNameLength == 0)
1261     {
1262
1263         //
1264         // The short name IS the long name
1265         //
1266
1267         if( *Length >= (LONG)FIELD_OFFSET( FILE_NAME_INFORMATION, FileName))
1268         {
1269
1270             if( *Length >= (LONG)(FIELD_OFFSET( FILE_NAME_INFORMATION, FileName) + (LONG)DirectoryCB->NameInformation.FileName.Length))
1271             {
1272
1273                 ulCopyLength = (LONG)DirectoryCB->NameInformation.FileName.Length;
1274
1275                 ntStatus = STATUS_SUCCESS;
1276             }
1277             else
1278             {
1279
1280                 ulCopyLength = *Length - FIELD_OFFSET( FILE_NAME_INFORMATION, FileName);
1281
1282                 ntStatus = STATUS_BUFFER_OVERFLOW;
1283             }
1284
1285             Buffer->FileNameLength = DirectoryCB->NameInformation.FileName.Length;
1286
1287             *Length -= FIELD_OFFSET( FILE_NAME_INFORMATION, FileName);
1288
1289             if( ulCopyLength > 0)
1290             {
1291
1292                 RtlCopyMemory( Buffer->FileName,
1293                                DirectoryCB->NameInformation.FileName.Buffer,
1294                                ulCopyLength);
1295
1296                 *Length -= ulCopyLength;
1297             }
1298         }
1299     }
1300     else
1301     {
1302
1303         if( *Length >= (LONG)FIELD_OFFSET( FILE_NAME_INFORMATION, FileName))
1304         {
1305
1306             if( *Length >= (LONG)(FIELD_OFFSET( FILE_NAME_INFORMATION, FileName) + (LONG)DirectoryCB->NameInformation.FileName.Length))
1307             {
1308
1309                 ulCopyLength = (LONG)DirectoryCB->NameInformation.ShortNameLength;
1310
1311                 ntStatus = STATUS_SUCCESS;
1312             }
1313             else
1314             {
1315
1316                 ulCopyLength = *Length - FIELD_OFFSET( FILE_NAME_INFORMATION, FileName);
1317
1318                 ntStatus = STATUS_BUFFER_OVERFLOW;
1319             }
1320
1321             Buffer->FileNameLength = DirectoryCB->NameInformation.ShortNameLength;
1322
1323             *Length -= FIELD_OFFSET( FILE_NAME_INFORMATION, FileName);
1324
1325             if( ulCopyLength > 0)
1326             {
1327
1328                 RtlCopyMemory( Buffer->FileName,
1329                                DirectoryCB->NameInformation.ShortName,
1330                                Buffer->FileNameLength);
1331
1332                 *Length -= ulCopyLength;
1333             }
1334         }
1335     }
1336
1337     return ntStatus;
1338 }
1339
1340 NTSTATUS
1341 AFSQueryNetworkInfo( IN PIRP Irp,
1342                      IN AFSDirectoryCB *DirectoryCB,
1343                      IN OUT PFILE_NETWORK_OPEN_INFORMATION Buffer,
1344                      IN OUT PLONG Length)
1345 {
1346
1347     NTSTATUS ntStatus = STATUS_SUCCESS;
1348     AFSDeviceExt *pDeviceExt = (AFSDeviceExt *)AFSRDRDeviceObject->DeviceExtension;
1349     AFSFcb *pFcb = NULL;
1350     AFSCcb *pCcb = NULL;
1351     PIO_STACK_LOCATION pIrpSp = IoGetCurrentIrpStackLocation( Irp);
1352     AFSFileInfoCB stFileInfo;
1353     AFSDirectoryCB *pParentDirectoryCB = NULL;
1354     UNICODE_STRING uniParentPath;
1355     ULONG ulFileAttribs = 0;
1356
1357     RtlZeroMemory( Buffer,
1358                    *Length);
1359
1360     if( *Length >= sizeof( FILE_NETWORK_OPEN_INFORMATION))
1361     {
1362
1363         ulFileAttribs = DirectoryCB->ObjectInformation->FileAttributes;
1364
1365         pFcb = (AFSFcb *)pIrpSp->FileObject->FsContext;
1366         pCcb = (AFSCcb *)pIrpSp->FileObject->FsContext2;
1367
1368         if( DirectoryCB->ObjectInformation->FileType == AFS_FILE_TYPE_SYMLINK)
1369         {
1370
1371             pParentDirectoryCB = AFSGetParentEntry( pCcb->NameArray);
1372
1373             AFSRetrieveParentPath( &pCcb->FullFileName,
1374                                    &uniParentPath);
1375
1376             RtlZeroMemory( &stFileInfo,
1377                            sizeof( AFSFileInfoCB));
1378
1379             //
1380             // Can't hold the Fcb while evaluating the path, leads to lock inversion
1381             //
1382
1383             AFSReleaseResource( &pFcb->NPFcb->Resource);
1384
1385             if( NT_SUCCESS( AFSRetrieveFileAttributes( pParentDirectoryCB,
1386                                                        DirectoryCB,
1387                                                        &uniParentPath,
1388                                                        NULL,
1389                                                        &pCcb->AuthGroup,
1390                                                        &stFileInfo)))
1391             {
1392                 ulFileAttribs = stFileInfo.FileAttributes;
1393
1394                 ulFileAttribs |= FILE_ATTRIBUTE_REPARSE_POINT;
1395             }
1396
1397             AFSAcquireShared( &pFcb->NPFcb->Resource,
1398                               TRUE);
1399         }
1400
1401         AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
1402                       AFS_TRACE_LEVEL_VERBOSE_2,
1403                       "AFSQueryNetworkInfo %wZ Type 0x%x Attrib 0x%x -> 0x%x\n",
1404                       &pCcb->DirectoryCB->NameInformation.FileName,
1405                       pCcb->DirectoryCB->ObjectInformation->FileType,
1406                       pCcb->DirectoryCB->ObjectInformation->FileAttributes,
1407                       ulFileAttribs);
1408
1409         Buffer->CreationTime.QuadPart = DirectoryCB->ObjectInformation->CreationTime.QuadPart;
1410         Buffer->LastAccessTime.QuadPart = DirectoryCB->ObjectInformation->LastAccessTime.QuadPart;
1411         Buffer->LastWriteTime.QuadPart = DirectoryCB->ObjectInformation->LastWriteTime.QuadPart;
1412         Buffer->ChangeTime.QuadPart = DirectoryCB->ObjectInformation->ChangeTime.QuadPart;
1413
1414         Buffer->AllocationSize.QuadPart = DirectoryCB->ObjectInformation->AllocationSize.QuadPart;
1415         Buffer->EndOfFile.QuadPart = DirectoryCB->ObjectInformation->EndOfFile.QuadPart;
1416
1417         Buffer->FileAttributes = ulFileAttribs;
1418
1419         if( DirectoryCB->NameInformation.FileName.Buffer[ 0] == L'.' &&
1420             BooleanFlagOn( pDeviceExt->DeviceFlags, AFS_DEVICE_FLAG_HIDE_DOT_NAMES))
1421         {
1422
1423             if ( Buffer->FileAttributes != FILE_ATTRIBUTE_NORMAL)
1424             {
1425
1426                 Buffer->FileAttributes |= FILE_ATTRIBUTE_HIDDEN;
1427             }
1428             else
1429             {
1430
1431                 Buffer->FileAttributes = FILE_ATTRIBUTE_HIDDEN;
1432             }
1433         }
1434
1435         *Length -= sizeof( FILE_NETWORK_OPEN_INFORMATION);
1436     }
1437     else
1438     {
1439
1440         ntStatus = STATUS_BUFFER_TOO_SMALL;
1441     }
1442
1443     return ntStatus;
1444 }
1445
1446 NTSTATUS
1447 AFSQueryStreamInfo( IN PIRP Irp,
1448                     IN AFSDirectoryCB *DirectoryCB,
1449                     IN OUT FILE_STREAM_INFORMATION *Buffer,
1450                     IN OUT PLONG Length)
1451 {
1452
1453     NTSTATUS ntStatus = STATUS_BUFFER_TOO_SMALL;
1454     ULONG ulCopyLength = 0;
1455     AFSDeviceExt *pDeviceExt = (AFSDeviceExt *)AFSRDRDeviceObject->DeviceExtension;
1456
1457     if( *Length >= FIELD_OFFSET( FILE_STREAM_INFORMATION, StreamName))
1458     {
1459
1460         RtlZeroMemory( Buffer,
1461                        *Length);
1462
1463         Buffer->NextEntryOffset = 0;
1464
1465
1466         if( !BooleanFlagOn( DirectoryCB->ObjectInformation->FileAttributes, FILE_ATTRIBUTE_DIRECTORY))
1467         {
1468
1469             if( *Length >= (LONG)(FIELD_OFFSET( FILE_STREAM_INFORMATION, StreamName) + 14))  // ::$DATA
1470             {
1471
1472                 ulCopyLength = 14;
1473
1474                 ntStatus = STATUS_SUCCESS;
1475             }
1476             else
1477             {
1478
1479                 ulCopyLength = *Length - FIELD_OFFSET( FILE_STREAM_INFORMATION, StreamName);
1480
1481                 ntStatus = STATUS_BUFFER_OVERFLOW;
1482             }
1483
1484             Buffer->StreamNameLength = 14; // ::$DATA
1485
1486             Buffer->StreamSize.QuadPart = DirectoryCB->ObjectInformation->EndOfFile.QuadPart;
1487
1488             Buffer->StreamAllocationSize.QuadPart = DirectoryCB->ObjectInformation->AllocationSize.QuadPart;
1489
1490             *Length -= FIELD_OFFSET( FILE_STREAM_INFORMATION, StreamName);
1491
1492             if( ulCopyLength > 0)
1493             {
1494
1495                 RtlCopyMemory( Buffer->StreamName,
1496                                L"::$DATA",
1497                                ulCopyLength);
1498
1499                 *Length -= ulCopyLength;
1500             }
1501         }
1502         else
1503         {
1504
1505             Buffer->StreamNameLength = 0;       // No stream for a directory
1506
1507             // The response size is zero
1508
1509             ntStatus = STATUS_SUCCESS;
1510         }
1511     }
1512
1513     return ntStatus;
1514 }
1515
1516 NTSTATUS
1517 AFSQueryAttribTagInfo( IN PIRP Irp,
1518                        IN AFSDirectoryCB *DirectoryCB,
1519                        IN OUT FILE_ATTRIBUTE_TAG_INFORMATION *Buffer,
1520                        IN OUT PLONG Length)
1521 {
1522
1523     NTSTATUS ntStatus = STATUS_BUFFER_TOO_SMALL;
1524     ULONG ulCopyLength = 0;
1525     AFSDeviceExt *pDeviceExt = (AFSDeviceExt *)AFSRDRDeviceObject->DeviceExtension;
1526     AFSFcb *pFcb = NULL;
1527     AFSCcb *pCcb = NULL;
1528     PIO_STACK_LOCATION pIrpSp = IoGetCurrentIrpStackLocation( Irp);
1529     AFSFileInfoCB stFileInfo;
1530     AFSDirectoryCB *pParentDirectoryCB = NULL;
1531     UNICODE_STRING uniParentPath;
1532     ULONG ulFileAttribs = 0;
1533
1534     if( *Length >= sizeof( FILE_ATTRIBUTE_TAG_INFORMATION))
1535     {
1536
1537         RtlZeroMemory( Buffer,
1538                        *Length);
1539
1540         ulFileAttribs = DirectoryCB->ObjectInformation->FileAttributes;
1541
1542         pFcb = (AFSFcb *)pIrpSp->FileObject->FsContext;
1543         pCcb = (AFSCcb *)pIrpSp->FileObject->FsContext2;
1544
1545         if( DirectoryCB->ObjectInformation->FileType == AFS_FILE_TYPE_SYMLINK)
1546         {
1547
1548             pParentDirectoryCB = AFSGetParentEntry( pCcb->NameArray);
1549
1550             AFSRetrieveParentPath( &pCcb->FullFileName,
1551                                    &uniParentPath);
1552
1553             RtlZeroMemory( &stFileInfo,
1554                            sizeof( AFSFileInfoCB));
1555
1556             //
1557             // Can't hold the Fcb while evaluating the path, leads to lock inversion
1558             //
1559
1560             AFSReleaseResource( &pFcb->NPFcb->Resource);
1561
1562             if( NT_SUCCESS( AFSRetrieveFileAttributes( pParentDirectoryCB,
1563                                                        DirectoryCB,
1564                                                        &uniParentPath,
1565                                                        NULL,
1566                                                        &pCcb->AuthGroup,
1567                                                        &stFileInfo)))
1568             {
1569                 ulFileAttribs = stFileInfo.FileAttributes;
1570
1571                 ulFileAttribs |= FILE_ATTRIBUTE_REPARSE_POINT;
1572             }
1573
1574             AFSAcquireShared( &pFcb->NPFcb->Resource,
1575                               TRUE);
1576         }
1577
1578         AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
1579                       AFS_TRACE_LEVEL_VERBOSE_2,
1580                       "AFSAttribTagInfo %wZ Type 0x%x Attrib 0x%x -> 0x%x\n",
1581                       &pCcb->DirectoryCB->NameInformation.FileName,
1582                       pCcb->DirectoryCB->ObjectInformation->FileType,
1583                       pCcb->DirectoryCB->ObjectInformation->FileAttributes,
1584                       ulFileAttribs);
1585
1586         Buffer->FileAttributes = ulFileAttribs;
1587
1588         if( DirectoryCB->NameInformation.FileName.Buffer[ 0] == L'.' &&
1589             BooleanFlagOn( pDeviceExt->DeviceFlags, AFS_DEVICE_FLAG_HIDE_DOT_NAMES))
1590         {
1591
1592             if ( Buffer->FileAttributes != FILE_ATTRIBUTE_NORMAL)
1593             {
1594
1595                 Buffer->FileAttributes |= FILE_ATTRIBUTE_HIDDEN;
1596             }
1597             else
1598             {
1599
1600                 Buffer->FileAttributes = FILE_ATTRIBUTE_HIDDEN;
1601             }
1602         }
1603
1604         if( BooleanFlagOn( DirectoryCB->ObjectInformation->FileAttributes, FILE_ATTRIBUTE_REPARSE_POINT))
1605         {
1606             Buffer->ReparseTag = IO_REPARSE_TAG_OPENAFS_DFS;
1607         }
1608
1609         *Length -= sizeof( FILE_ATTRIBUTE_TAG_INFORMATION);
1610
1611         ntStatus = STATUS_SUCCESS;
1612     }
1613
1614     return ntStatus;
1615 }
1616
1617 NTSTATUS
1618 AFSQueryRemoteProtocolInfo( IN PIRP Irp,
1619                             IN AFSDirectoryCB *DirectoryCB,
1620                             IN OUT FILE_REMOTE_PROTOCOL_INFORMATION *Buffer,
1621                             IN OUT PLONG Length)
1622 {
1623
1624     NTSTATUS ntStatus = STATUS_BUFFER_TOO_SMALL;
1625     ULONG ulCopyLength = 0;
1626     AFSDeviceExt *pDeviceExt = (AFSDeviceExt *)AFSRDRDeviceObject->DeviceExtension;
1627
1628     if( *Length >= sizeof( FILE_REMOTE_PROTOCOL_INFORMATION))
1629     {
1630
1631         RtlZeroMemory( Buffer,
1632                        *Length);
1633
1634         Buffer->StructureVersion = 1;
1635
1636         Buffer->StructureSize = sizeof(FILE_REMOTE_PROTOCOL_INFORMATION);
1637
1638         Buffer->Protocol = WNNC_NET_OPENAFS;
1639
1640         Buffer->ProtocolMajorVersion = 3;
1641
1642         Buffer->ProtocolMinorVersion = 0;
1643
1644         Buffer->ProtocolRevision = 0;
1645
1646         *Length -= sizeof( FILE_REMOTE_PROTOCOL_INFORMATION);
1647
1648         ntStatus = STATUS_SUCCESS;
1649     }
1650
1651     return ntStatus;
1652 }
1653
1654 NTSTATUS
1655 AFSQueryPhysicalNameInfo( IN PIRP Irp,
1656                           IN AFSDirectoryCB *DirectoryCB,
1657                           IN OUT PFILE_NETWORK_PHYSICAL_NAME_INFORMATION Buffer,
1658                           IN OUT PLONG Length)
1659 {
1660
1661     NTSTATUS ntStatus = STATUS_SUCCESS;
1662     ULONG ulCopyLength = 0;
1663     ULONG cchCopied = 0;
1664     AFSFcb *pFcb = NULL;
1665     AFSCcb *pCcb = NULL;
1666     IO_STACK_LOCATION *pIrpSp = IoGetCurrentIrpStackLocation( Irp);
1667     BOOLEAN bAddLeadingSlash = FALSE;
1668     USHORT usFullNameLength = 0;
1669
1670     pFcb = (AFSFcb *)pIrpSp->FileObject->FsContext;
1671
1672     pCcb = (AFSCcb *)pIrpSp->FileObject->FsContext2;
1673
1674     if( *Length >= FIELD_OFFSET( FILE_NETWORK_PHYSICAL_NAME_INFORMATION, FileName))
1675     {
1676
1677         RtlZeroMemory( Buffer,
1678                        *Length);
1679
1680         if( pCcb->FullFileName.Length == 0 ||
1681             pCcb->FullFileName.Buffer[ 0] != L'\\')
1682         {
1683             bAddLeadingSlash = TRUE;
1684         }
1685
1686         usFullNameLength = pCcb->FullFileName.Length;
1687
1688         if( bAddLeadingSlash)
1689         {
1690             usFullNameLength += sizeof( WCHAR);
1691         }
1692
1693         if( *Length >= (LONG)(FIELD_OFFSET( FILE_NETWORK_PHYSICAL_NAME_INFORMATION, FileName) + (LONG)usFullNameLength))
1694         {
1695             ulCopyLength = (LONG)usFullNameLength;
1696         }
1697         else
1698         {
1699
1700             ulCopyLength = *Length - FIELD_OFFSET( FILE_NETWORK_PHYSICAL_NAME_INFORMATION, FileName);
1701
1702             ntStatus = STATUS_BUFFER_OVERFLOW;
1703         }
1704
1705         Buffer->FileNameLength = (ULONG)usFullNameLength;
1706
1707         *Length -= FIELD_OFFSET( FILE_NETWORK_PHYSICAL_NAME_INFORMATION, FileName);
1708
1709         if( ulCopyLength > 0)
1710         {
1711
1712             if( bAddLeadingSlash)
1713             {
1714
1715                 Buffer->FileName[ cchCopied] = L'\\';
1716
1717                 ulCopyLength -= sizeof( WCHAR);
1718                 *Length -= sizeof( WCHAR);
1719                 cchCopied++;
1720             }
1721
1722             if( ulCopyLength >= pCcb->FullFileName.Length)
1723             {
1724
1725                 RtlCopyMemory( &Buffer->FileName[ cchCopied],
1726                                pCcb->FullFileName.Buffer,
1727                                pCcb->FullFileName.Length);
1728
1729                 ulCopyLength -= pCcb->FullFileName.Length;
1730                 *Length -= pCcb->FullFileName.Length;
1731                 cchCopied += pCcb->FullFileName.Length/sizeof( WCHAR);
1732             }
1733             else
1734             {
1735
1736                 RtlCopyMemory( &Buffer->FileName[ cchCopied],
1737                                pCcb->FullFileName.Buffer,
1738                                ulCopyLength);
1739
1740                 *Length -= ulCopyLength;
1741             }
1742         }
1743     }
1744     else
1745     {
1746
1747         ntStatus = STATUS_BUFFER_TOO_SMALL;
1748     }
1749
1750     return ntStatus;
1751 }
1752
1753 NTSTATUS
1754 AFSSetBasicInfo( IN PIRP Irp,
1755                  IN AFSDirectoryCB *DirectoryCB)
1756 {
1757     NTSTATUS ntStatus = STATUS_SUCCESS;
1758     PFILE_BASIC_INFORMATION pBuffer;
1759     PIO_STACK_LOCATION pIrpSp = IoGetCurrentIrpStackLocation( Irp);
1760     ULONG ulNotifyFilter = 0;
1761     AFSCcb *pCcb = NULL;
1762
1763     __Enter
1764     {
1765
1766         pCcb = (AFSCcb *)pIrpSp->FileObject->FsContext2;
1767
1768         pBuffer = (PFILE_BASIC_INFORMATION)Irp->AssociatedIrp.SystemBuffer;
1769
1770         pCcb->FileUnwindInfo.FileAttributes = (ULONG)-1;
1771
1772         if( pBuffer->FileAttributes != (ULONGLONG)0)
1773         {
1774
1775             if( DirectoryCB->ObjectInformation->Fcb->Header.NodeTypeCode == AFS_FILE_FCB &&
1776                 BooleanFlagOn( pBuffer->FileAttributes, FILE_ATTRIBUTE_DIRECTORY))
1777             {
1778
1779                 try_return( ntStatus = STATUS_INVALID_PARAMETER);
1780             }
1781
1782             if( DirectoryCB->ObjectInformation->Fcb->Header.NodeTypeCode == AFS_DIRECTORY_FCB)
1783             {
1784
1785                 pBuffer->FileAttributes |= FILE_ATTRIBUTE_DIRECTORY;
1786             }
1787
1788             pCcb->FileUnwindInfo.FileAttributes = DirectoryCB->ObjectInformation->FileAttributes;
1789
1790             DirectoryCB->ObjectInformation->FileAttributes = pBuffer->FileAttributes;
1791
1792             ulNotifyFilter |= FILE_NOTIFY_CHANGE_ATTRIBUTES;
1793
1794             SetFlag( DirectoryCB->ObjectInformation->Fcb->Flags, AFS_FCB_FLAG_FILE_MODIFIED);
1795         }
1796
1797         pCcb->FileUnwindInfo.CreationTime.QuadPart = (ULONGLONG)-1;
1798
1799         if( pBuffer->CreationTime.QuadPart != (ULONGLONG)-1 &&
1800             pBuffer->CreationTime.QuadPart != (ULONGLONG)0)
1801         {
1802
1803             pCcb->FileUnwindInfo.CreationTime.QuadPart = DirectoryCB->ObjectInformation->CreationTime.QuadPart;
1804
1805             DirectoryCB->ObjectInformation->CreationTime.QuadPart = pBuffer->CreationTime.QuadPart;
1806
1807             ulNotifyFilter |= FILE_NOTIFY_CHANGE_CREATION;
1808
1809             SetFlag( DirectoryCB->ObjectInformation->Fcb->Flags, AFS_FCB_FLAG_FILE_MODIFIED | AFS_FCB_FLAG_UPDATE_CREATE_TIME);
1810         }
1811
1812         pCcb->FileUnwindInfo.LastAccessTime.QuadPart = (ULONGLONG)-1;
1813
1814         if( pBuffer->LastAccessTime.QuadPart != (ULONGLONG)-1 &&
1815             pBuffer->LastAccessTime.QuadPart != (ULONGLONG)0)
1816         {
1817
1818             pCcb->FileUnwindInfo.LastAccessTime.QuadPart = DirectoryCB->ObjectInformation->LastAccessTime.QuadPart;
1819
1820             DirectoryCB->ObjectInformation->LastAccessTime.QuadPart = pBuffer->LastAccessTime.QuadPart;
1821
1822             ulNotifyFilter |= FILE_NOTIFY_CHANGE_LAST_ACCESS;
1823
1824             SetFlag( DirectoryCB->ObjectInformation->Fcb->Flags, AFS_FCB_FLAG_FILE_MODIFIED | AFS_FCB_FLAG_UPDATE_ACCESS_TIME);
1825         }
1826
1827         pCcb->FileUnwindInfo.LastWriteTime.QuadPart = (ULONGLONG)-1;
1828
1829         if( pBuffer->LastWriteTime.QuadPart != (ULONGLONG)-1 &&
1830             pBuffer->LastWriteTime.QuadPart != (ULONGLONG)0)
1831         {
1832
1833             pCcb->FileUnwindInfo.LastWriteTime.QuadPart = DirectoryCB->ObjectInformation->LastWriteTime.QuadPart;
1834
1835             DirectoryCB->ObjectInformation->LastWriteTime.QuadPart = pBuffer->LastWriteTime.QuadPart;
1836
1837             ulNotifyFilter |= FILE_NOTIFY_CHANGE_LAST_WRITE;
1838
1839             SetFlag( DirectoryCB->ObjectInformation->Fcb->Flags, AFS_FCB_FLAG_FILE_MODIFIED | AFS_FCB_FLAG_UPDATE_LAST_WRITE_TIME);
1840         }
1841
1842         pCcb->FileUnwindInfo.ChangeTime.QuadPart = (ULONGLONG)-1;
1843
1844         if( pBuffer->ChangeTime.QuadPart != (ULONGLONG)-1 &&
1845             pBuffer->ChangeTime.QuadPart != (ULONGLONG)0)
1846         {
1847
1848             pCcb->FileUnwindInfo.ChangeTime.QuadPart = DirectoryCB->ObjectInformation->ChangeTime.QuadPart;
1849
1850             DirectoryCB->ObjectInformation->ChangeTime.QuadPart = pBuffer->ChangeTime.QuadPart;
1851
1852             ulNotifyFilter |= FILE_NOTIFY_CHANGE_LAST_ACCESS;
1853
1854             SetFlag( DirectoryCB->ObjectInformation->Fcb->Flags, AFS_FCB_FLAG_FILE_MODIFIED | AFS_FCB_FLAG_UPDATE_CHANGE_TIME);
1855         }
1856
1857         if( ulNotifyFilter > 0)
1858         {
1859
1860             if( DirectoryCB->ObjectInformation->ParentObjectInformation != NULL)
1861             {
1862
1863                 AFSFsRtlNotifyFullReportChange( DirectoryCB->ObjectInformation->ParentObjectInformation,
1864                                                 pCcb,
1865                                                 (ULONG)ulNotifyFilter,
1866                                                 (ULONG)FILE_ACTION_MODIFIED);
1867             }
1868         }
1869
1870 try_exit:
1871
1872         NOTHING;
1873     }
1874
1875     return ntStatus;
1876 }
1877
1878 NTSTATUS
1879 AFSSetDispositionInfo( IN PIRP Irp,
1880                        IN AFSDirectoryCB *DirectoryCB)
1881 {
1882     NTSTATUS ntStatus = STATUS_SUCCESS;
1883     PFILE_DISPOSITION_INFORMATION pBuffer;
1884     PIO_STACK_LOCATION pIrpSp = IoGetCurrentIrpStackLocation( Irp);
1885     AFSFcb *pFcb = NULL;
1886     AFSCcb *pCcb = NULL;
1887
1888     __Enter
1889     {
1890
1891         pBuffer = (PFILE_DISPOSITION_INFORMATION)Irp->AssociatedIrp.SystemBuffer;
1892
1893         pFcb = (AFSFcb *)pIrpSp->FileObject->FsContext;
1894
1895         pCcb = (AFSCcb *)pIrpSp->FileObject->FsContext2;
1896
1897         //
1898         // Can't delete the root
1899         //
1900
1901         if( pFcb->Header.NodeTypeCode == AFS_ROOT_FCB)
1902         {
1903
1904             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
1905                           AFS_TRACE_LEVEL_ERROR,
1906                           "AFSSetDispositionInfo Attempt to delete root entry\n");
1907
1908             try_return( ntStatus = STATUS_CANNOT_DELETE);
1909         }
1910
1911         //
1912         // If the file is read only then do not allow the delete
1913         //
1914
1915         if( BooleanFlagOn( DirectoryCB->ObjectInformation->FileAttributes, FILE_ATTRIBUTE_READONLY))
1916         {
1917
1918             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
1919                           AFS_TRACE_LEVEL_ERROR,
1920                           "AFSSetDispositionInfo Attempt to delete read only entry %wZ\n",
1921                           &DirectoryCB->NameInformation.FileName);
1922
1923             try_return( ntStatus = STATUS_CANNOT_DELETE);
1924         }
1925
1926         if( pBuffer->DeleteFile)
1927         {
1928
1929             //
1930             // Check if the caller can delete the file
1931             //
1932
1933             ntStatus = AFSNotifyDelete( DirectoryCB,
1934                                         &pCcb->AuthGroup,
1935                                         TRUE);
1936
1937             if( !NT_SUCCESS( ntStatus))
1938             {
1939
1940                 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
1941                               AFS_TRACE_LEVEL_ERROR,
1942                               "AFSSetDispositionInfo Cannot delete entry %wZ Status %08lX\n",
1943                               &DirectoryCB->NameInformation.FileName,
1944                               ntStatus);
1945
1946                 try_return( ntStatus);
1947             }
1948
1949             if( pFcb->Header.NodeTypeCode == AFS_DIRECTORY_FCB)
1950             {
1951
1952                 //
1953                 // Check if this is a directory that there are not currently other opens
1954                 //
1955
1956                 if( pFcb->ObjectInformation->Specific.Directory.ChildOpenHandleCount > 0)
1957                 {
1958
1959                     AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
1960                                   AFS_TRACE_LEVEL_ERROR,
1961                                   "AFSSetDispositionInfo Attempt to delete directory %wZ with open %u handles\n",
1962                                   &DirectoryCB->NameInformation.FileName,
1963                                   pFcb->ObjectInformation->Specific.Directory.ChildOpenHandleCount);
1964
1965                     try_return( ntStatus = STATUS_DIRECTORY_NOT_EMPTY);
1966                 }
1967
1968                 if( !AFSIsDirectoryEmptyForDelete( pFcb))
1969                 {
1970
1971                     AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
1972                                   AFS_TRACE_LEVEL_ERROR,
1973                                   "AFSSetDispositionInfo Attempt to delete non-empty directory %wZ\n",
1974                                   &DirectoryCB->NameInformation.FileName);
1975
1976                     try_return( ntStatus = STATUS_DIRECTORY_NOT_EMPTY);
1977                 }
1978             }
1979             else
1980             {
1981
1982                 //
1983                 // Attempt to flush any outstanding data
1984                 //
1985
1986                 if( !MmFlushImageSection( &pFcb->NPFcb->SectionObjectPointers,
1987                                           MmFlushForDelete))
1988                 {
1989
1990                     AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
1991                                   AFS_TRACE_LEVEL_ERROR,
1992                                   "AFSSetDispositionInfo Failed to flush image section for delete Entry %wZ\n",
1993                                   &DirectoryCB->NameInformation.FileName);
1994
1995                     try_return( ntStatus = STATUS_CANNOT_DELETE);
1996                 }
1997
1998                 //
1999                 // Purge the cache as well
2000                 //
2001
2002                 if( pFcb->NPFcb->SectionObjectPointers.DataSectionObject != NULL)
2003                 {
2004
2005                     CcPurgeCacheSection( &pFcb->NPFcb->SectionObjectPointers,
2006                                          NULL,
2007                                          0,
2008                                          TRUE);
2009                 }
2010             }
2011
2012             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2013                           AFS_TRACE_LEVEL_VERBOSE,
2014                           "AFSSetDispositionInfo Setting PENDING_DELETE on DirEntry  %p Name %wZ\n",
2015                           DirectoryCB,
2016                           &DirectoryCB->NameInformation.FileName);
2017
2018             SetFlag( pCcb->DirectoryCB->Flags, AFS_DIR_ENTRY_PENDING_DELETE);
2019         }
2020         else
2021         {
2022
2023             ClearFlag( pCcb->DirectoryCB->Flags, AFS_DIR_ENTRY_PENDING_DELETE);
2024         }
2025
2026         //
2027         // OK, should be good to go, set the flag in the file object
2028         //
2029
2030         pIrpSp->FileObject->DeletePending = pBuffer->DeleteFile;
2031
2032 try_exit:
2033
2034         NOTHING;
2035     }
2036
2037     return ntStatus;
2038 }
2039
2040 NTSTATUS
2041 AFSSetRenameInfo( IN PIRP Irp)
2042 {
2043
2044     NTSTATUS ntStatus = STATUS_SUCCESS;
2045     PIO_STACK_LOCATION pIrpSp = IoGetCurrentIrpStackLocation( Irp);
2046     IO_STATUS_BLOCK stIoSb = {0,0};
2047     AFSFcb *pSrcFcb = NULL, *pTargetDcb = NULL, *pTargetFcb = NULL;
2048     AFSCcb *pSrcCcb = NULL, *pTargetDirCcb = NULL;
2049     PFILE_OBJECT pSrcFileObj = pIrpSp->FileObject;
2050     PFILE_OBJECT pTargetFileObj = pIrpSp->Parameters.SetFile.FileObject;
2051     PFILE_RENAME_INFORMATION pRenameInfo = NULL;
2052     UNICODE_STRING uniTargetName, uniSourceName;
2053     BOOLEAN bReplaceIfExists = FALSE;
2054     UNICODE_STRING uniShortName;
2055     AFSDirectoryCB *pTargetDirEntry = NULL;
2056     ULONG ulTargetCRC = 0;
2057     BOOLEAN bTargetEntryExists = FALSE;
2058     AFSObjectInfoCB *pSrcObject = NULL, *pTargetObject = NULL;
2059     AFSObjectInfoCB *pSrcParentObject = NULL, *pTargetParentObject = NULL;
2060     AFSFileID stNewFid, stTmpTargetFid;
2061     ULONG ulNotificationAction = 0, ulNotifyFilter = 0;
2062     UNICODE_STRING uniFullTargetPath;
2063     BOOLEAN bCommonParent = FALSE;
2064     BOOLEAN bReleaseTargetDirLock = FALSE;
2065     BOOLEAN bReleaseSourceDirLock = FALSE;
2066     PERESOURCE  pSourceDirLock = NULL;
2067
2068     __Enter
2069     {
2070
2071         bReplaceIfExists = pIrpSp->Parameters.SetFile.ReplaceIfExists;
2072
2073         pSrcFcb = (AFSFcb *)pSrcFileObj->FsContext;
2074         pSrcCcb = (AFSCcb *)pSrcFileObj->FsContext2;
2075
2076         pSrcObject = pSrcFcb->ObjectInformation;
2077
2078         //
2079         // Perform some basic checks to ensure FS integrity
2080         //
2081
2082         if( pSrcFcb->Header.NodeTypeCode == AFS_ROOT_FCB)
2083         {
2084
2085             //
2086             // Can't rename the root directory
2087             //
2088
2089             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2090                           AFS_TRACE_LEVEL_ERROR,
2091                           "AFSSetRenameInfo Attempt to rename root entry\n");
2092
2093             try_return( ntStatus = STATUS_INVALID_PARAMETER);
2094         }
2095
2096         if( pSrcFcb->Header.NodeTypeCode == AFS_DIRECTORY_FCB)
2097         {
2098
2099             //
2100             // If there are any open children then fail the rename
2101             //
2102
2103             if( pSrcFcb->ObjectInformation->Specific.Directory.ChildOpenHandleCount > 0)
2104             {
2105
2106                 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2107                               AFS_TRACE_LEVEL_ERROR,
2108                               "AFSSetRenameInfo Attempt to rename directory with open children %wZ\n",
2109                               &pSrcCcb->DirectoryCB->NameInformation.FileName);
2110
2111                 try_return( ntStatus = STATUS_ACCESS_DENIED);
2112             }
2113         }
2114         else
2115         {
2116
2117             if( pSrcFcb->OpenHandleCount > 1)
2118             {
2119
2120                 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2121                               AFS_TRACE_LEVEL_ERROR,
2122                               "AFSSetRenameInfo Attempt to rename directory with open references %wZ\n",
2123                               &pSrcCcb->DirectoryCB->NameInformation.FileName);
2124
2125                 try_return( ntStatus = STATUS_ACCESS_DENIED);
2126             }
2127         }
2128
2129         //
2130         // Resolve the target fileobject
2131         //
2132
2133         if( pTargetFileObj == NULL)
2134         {
2135
2136             //
2137             // This is a simple rename. Here the target directory is the same as the source parent directory
2138             // and the name is retrieved from the system buffer information
2139             //
2140
2141             pRenameInfo = (PFILE_RENAME_INFORMATION)Irp->AssociatedIrp.SystemBuffer;
2142
2143             pTargetParentObject = pSrcFcb->ObjectInformation->ParentObjectInformation;
2144
2145             pTargetDcb = pTargetParentObject->Fcb;
2146
2147             uniTargetName.Length = (USHORT)pRenameInfo->FileNameLength;
2148             uniTargetName.Buffer = (PWSTR)&pRenameInfo->FileName;
2149         }
2150         else
2151         {
2152
2153             //
2154             // So here we have the target directory taken from the targetfile object
2155             //
2156
2157             pTargetDcb = (AFSFcb *)pTargetFileObj->FsContext;
2158
2159             pTargetDirCcb = (AFSCcb *)pTargetFileObj->FsContext2;
2160
2161             pTargetParentObject = (AFSObjectInfoCB *)pTargetDcb->ObjectInformation;
2162
2163             //
2164             // Grab the target name which we setup in the IRP_MJ_CREATE handler. By how we set this up
2165             // it is only the target component of the rename operation
2166             //
2167
2168             uniTargetName = *((PUNICODE_STRING)&pTargetFileObj->FileName);
2169         }
2170
2171         //
2172         // We do not allow cross-volume renames to occur
2173         //
2174
2175         if( pTargetParentObject->VolumeCB != pSrcObject->VolumeCB)
2176         {
2177
2178             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2179                           AFS_TRACE_LEVEL_ERROR,
2180                           "AFSSetRenameInfo Attempt to rename directory to different volume %wZ\n",
2181                           &pSrcCcb->DirectoryCB->NameInformation.FileName);
2182
2183             try_return( ntStatus = STATUS_NOT_SAME_DEVICE);
2184         }
2185
2186         ulTargetCRC = AFSGenerateCRC( &uniTargetName,
2187                                       FALSE);
2188
2189         AFSAcquireExcl( pTargetParentObject->Specific.Directory.DirectoryNodeHdr.TreeLock,
2190                         TRUE);
2191
2192         bReleaseTargetDirLock = TRUE;
2193
2194         if( pTargetParentObject != pSrcFcb->ObjectInformation->ParentObjectInformation)
2195         {
2196             AFSAcquireExcl( pSrcFcb->ObjectInformation->ParentObjectInformation->Specific.Directory.DirectoryNodeHdr.TreeLock,
2197                             TRUE);
2198
2199             bReleaseSourceDirLock = TRUE;
2200
2201             pSourceDirLock = pSrcFcb->ObjectInformation->ParentObjectInformation->Specific.Directory.DirectoryNodeHdr.TreeLock;
2202         }
2203
2204         AFSLocateCaseSensitiveDirEntry( pTargetParentObject->Specific.Directory.DirectoryNodeHdr.CaseSensitiveTreeHead,
2205                                         ulTargetCRC,
2206                                         &pTargetDirEntry);
2207
2208         if( pTargetDirEntry == NULL)
2209         {
2210
2211             //
2212             // Missed so perform a case insensitive lookup
2213             //
2214
2215             ulTargetCRC = AFSGenerateCRC( &uniTargetName,
2216                                           TRUE);
2217
2218             AFSLocateCaseInsensitiveDirEntry( pTargetParentObject->Specific.Directory.DirectoryNodeHdr.CaseInsensitiveTreeHead,
2219                                               ulTargetCRC,
2220                                               &pTargetDirEntry);
2221         }
2222
2223         if( pTargetDirEntry == NULL && RtlIsNameLegalDOS8Dot3( &uniTargetName,
2224                                                                NULL,
2225                                                                NULL))
2226         {
2227             //
2228             // Try the short name
2229             //
2230             AFSLocateShortNameDirEntry( pTargetParentObject->Specific.Directory.ShortNameTree,
2231                                         ulTargetCRC,
2232                                         &pTargetDirEntry);
2233         }
2234
2235         //
2236         // Increment our ref count on the dir entry
2237         //
2238
2239         if( pTargetDirEntry != NULL)
2240         {
2241
2242             ASSERT( pTargetParentObject == pTargetDirEntry->ObjectInformation->ParentObjectInformation);
2243
2244             InterlockedIncrement( &pTargetDirEntry->OpenReferenceCount);
2245
2246             if( !bReplaceIfExists)
2247             {
2248
2249                 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2250                               AFS_TRACE_LEVEL_ERROR,
2251                               "AFSSetRenameInfo Attempt to rename directory with target collision %wZ Target %wZ\n",
2252                               &pSrcCcb->DirectoryCB->NameInformation.FileName,
2253                               &pTargetDirEntry->NameInformation.FileName);
2254
2255                 try_return( ntStatus = STATUS_OBJECT_NAME_COLLISION);
2256             }
2257
2258             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2259                           AFS_TRACE_LEVEL_ERROR,
2260                           "AFSSetRenameInfo Target %wZ exists DE %p Count %08lX, performing delete of target\n",
2261                           &pTargetDirEntry->NameInformation.FileName,
2262                           pTargetDirEntry,
2263                           pTargetDirEntry->OpenReferenceCount);
2264
2265             //
2266             // Pull the directory entry from the parent
2267             //
2268
2269             AFSRemoveDirNodeFromParent( pTargetParentObject,
2270                                         pTargetDirEntry,
2271                                         FALSE);
2272
2273             bTargetEntryExists = TRUE;
2274         }
2275         else
2276         {
2277             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2278                           AFS_TRACE_LEVEL_VERBOSE,
2279                           "AFSSetRenameInfo Target does NOT exist, normal rename\n");
2280         }
2281
2282         //
2283         // Extract off the final component name from the Fcb
2284         //
2285
2286         uniSourceName.Length = (USHORT)pSrcCcb->DirectoryCB->NameInformation.FileName.Length;
2287         uniSourceName.MaximumLength = uniSourceName.Length;
2288
2289         uniSourceName.Buffer = pSrcCcb->DirectoryCB->NameInformation.FileName.Buffer;
2290
2291         //
2292         // The quick check to see if they are not really performing a rename
2293         // Do the names match? Only do this where the parent directories are
2294         // the same
2295         //
2296
2297         if( pTargetParentObject == pSrcFcb->ObjectInformation->ParentObjectInformation)
2298         {
2299
2300             bCommonParent = TRUE;
2301
2302             if( FsRtlAreNamesEqual( &uniTargetName,
2303                                     &uniSourceName,
2304                                     FALSE,
2305                                     NULL))
2306             {
2307                 try_return( ntStatus = STATUS_SUCCESS);
2308             }
2309         }
2310         else
2311         {
2312
2313             bCommonParent = FALSE;
2314         }
2315
2316         //
2317         // We need to remove the DirEntry from the parent node, update the index
2318         // and reinsert it into the parent tree. Note that for entries with the
2319         // same parent we do not pull the node from the enumeration list
2320         //
2321
2322         AFSRemoveDirNodeFromParent( pSrcFcb->ObjectInformation->ParentObjectInformation,
2323                                     pSrcCcb->DirectoryCB,
2324                                     !bCommonParent);
2325
2326         //
2327         // OK, this is a simple rename. Issue the rename
2328         // request to the service.
2329         //
2330
2331         ntStatus = AFSNotifyRename( pSrcFcb->ObjectInformation,
2332                                     &pSrcCcb->AuthGroup,
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             AFSAcquireExcl( pSrcObject->VolumeCB->ObjectInfoTree.TreeLock,
2429                             TRUE);
2430
2431             //
2432             // Remove the old information entry
2433             //
2434
2435             AFSRemoveHashEntry( &pSrcObject->VolumeCB->ObjectInfoTree.TreeHead,
2436                                 &pSrcObject->TreeEntry);
2437
2438             RtlCopyMemory( &pSrcObject->FileId,
2439                            &stNewFid,
2440                            sizeof( AFSFileID));
2441
2442             //
2443             // Insert the entry into the new object table.
2444             //
2445
2446             pSrcObject->TreeEntry.HashIndex = AFSCreateLowIndex( &pSrcObject->FileId);
2447
2448             if( pSrcObject->VolumeCB->ObjectInfoTree.TreeHead == NULL)
2449             {
2450
2451                 pSrcObject->VolumeCB->ObjectInfoTree.TreeHead = &pSrcObject->TreeEntry;
2452             }
2453             else
2454             {
2455
2456                 AFSInsertHashEntry( pSrcObject->VolumeCB->ObjectInfoTree.TreeHead,
2457                                     &pSrcObject->TreeEntry);
2458             }
2459
2460             AFSReleaseResource( pSrcObject->VolumeCB->ObjectInfoTree.TreeLock);
2461         }
2462
2463         //
2464         // Update the hash values for the name trees.
2465         //
2466
2467         pSrcCcb->DirectoryCB->CaseSensitiveTreeEntry.HashIndex = AFSGenerateCRC( &pSrcCcb->DirectoryCB->NameInformation.FileName,
2468                                                                                  FALSE);
2469
2470         pSrcCcb->DirectoryCB->CaseInsensitiveTreeEntry.HashIndex = AFSGenerateCRC( &pSrcCcb->DirectoryCB->NameInformation.FileName,
2471                                                                                    TRUE);
2472
2473         if( pSrcCcb->DirectoryCB->NameInformation.ShortNameLength > 0 &&
2474             !RtlIsNameLegalDOS8Dot3( &pSrcCcb->DirectoryCB->NameInformation.FileName,
2475                                      NULL,
2476                                      NULL))
2477         {
2478
2479             uniShortName.Length = pSrcCcb->DirectoryCB->NameInformation.ShortNameLength;
2480             uniShortName.MaximumLength = uniShortName.Length;
2481             uniShortName.Buffer = pSrcCcb->DirectoryCB->NameInformation.ShortName;
2482
2483             pSrcCcb->DirectoryCB->Type.Data.ShortNameTreeEntry.HashIndex = AFSGenerateCRC( &uniShortName,
2484                                                                                            TRUE);
2485
2486             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2487                           AFS_TRACE_LEVEL_VERBOSE,
2488                           "AFSSetRenameInfo Initialized short name hash for %wZ longname %wZ\n",
2489                           &uniShortName,
2490                           &pSrcCcb->DirectoryCB->NameInformation.FileName);
2491         }
2492         else
2493         {
2494
2495             pSrcCcb->DirectoryCB->Type.Data.ShortNameTreeEntry.HashIndex = 0;
2496         }
2497
2498         if( !bCommonParent)
2499         {
2500
2501             //
2502             // Update the file index for the object in the new parent
2503             //
2504
2505             pSrcCcb->DirectoryCB->FileIndex = (ULONG)InterlockedIncrement( &pTargetParentObject->Specific.Directory.DirectoryNodeHdr.ContentIndex);
2506         }
2507
2508         //
2509         // Re-insert the directory entry
2510         //
2511
2512         AFSInsertDirectoryNode( pTargetParentObject,
2513                                 pSrcCcb->DirectoryCB,
2514                                 !bCommonParent);
2515
2516         //
2517         // Update the parent pointer in the source object if they are different
2518         //
2519
2520         if( pSrcCcb->DirectoryCB->ObjectInformation->ParentObjectInformation != pTargetParentObject)
2521         {
2522
2523             InterlockedDecrement( &pSrcCcb->DirectoryCB->ObjectInformation->ParentObjectInformation->Specific.Directory.ChildOpenHandleCount);
2524
2525             InterlockedDecrement( &pSrcCcb->DirectoryCB->ObjectInformation->ParentObjectInformation->Specific.Directory.ChildOpenReferenceCount);
2526
2527             InterlockedIncrement( &pTargetParentObject->Specific.Directory.ChildOpenHandleCount);
2528
2529             InterlockedIncrement( &pTargetParentObject->Specific.Directory.ChildOpenReferenceCount);
2530
2531             pSrcCcb->DirectoryCB->ObjectInformation->ParentObjectInformation = pTargetParentObject;
2532
2533             ulNotificationAction = FILE_ACTION_ADDED;
2534         }
2535         else
2536         {
2537
2538             ulNotificationAction = FILE_ACTION_RENAMED_NEW_NAME;
2539         }
2540
2541         //
2542         // Now update the notification for the target file
2543         //
2544
2545         AFSFsRtlNotifyFullReportChange( pTargetParentObject->ParentObjectInformation,
2546                                         pSrcCcb,
2547                                         (ULONG)ulNotifyFilter,
2548                                         (ULONG)ulNotificationAction);
2549
2550         //
2551         // If we performed the rename of the target because it existed, we now need to
2552         // delete the tmp target we created above
2553         //
2554
2555         if( bTargetEntryExists)
2556         {
2557
2558             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2559                           AFS_TRACE_LEVEL_VERBOSE,
2560                           "AFSSetRenameInfo Setting DELETE flag in dir entry %p name %wZ\n",
2561                           pTargetDirEntry,
2562                           &pTargetDirEntry->NameInformation.FileName);
2563
2564             SetFlag( pTargetDirEntry->Flags, AFS_DIR_ENTRY_DELETED);
2565
2566             //
2567             // Try and purge the cache map if this is a file
2568             //
2569
2570             if( pTargetDirEntry->ObjectInformation->FileType == AFS_FILE_TYPE_FILE &&
2571                 pTargetDirEntry->ObjectInformation->Fcb != NULL &&
2572                 pTargetDirEntry->OpenReferenceCount > 1)
2573             {
2574
2575                 pTargetFcb = pTargetDirEntry->ObjectInformation->Fcb;
2576
2577                 AFSAcquireExcl( &pTargetFcb->NPFcb->Resource,
2578                                 TRUE);
2579
2580                 //
2581                 // Close the section in the event it was mapped
2582                 //
2583
2584                 if( !MmForceSectionClosed( &pTargetFcb->NPFcb->SectionObjectPointers,
2585                                            TRUE))
2586                 {
2587
2588                     AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2589                                   AFS_TRACE_LEVEL_ERROR,
2590                                   "AFSSetRenameInfo Failed to delete section for target file %wZ\n",
2591                                   &pTargetDirEntry->NameInformation.FileName);
2592                 }
2593
2594                 AFSReleaseResource( &pTargetFcb->NPFcb->Resource);
2595             }
2596
2597             ASSERT( pTargetDirEntry->OpenReferenceCount > 0);
2598
2599             InterlockedDecrement( &pTargetDirEntry->OpenReferenceCount); // The count we added above
2600
2601             if( pTargetDirEntry->OpenReferenceCount == 0)
2602             {
2603
2604                 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2605                               AFS_TRACE_LEVEL_VERBOSE,
2606                               "AFSSetRenameInfo Deleting dir entry %p name %wZ\n",
2607                               pTargetDirEntry,
2608                               &pTargetDirEntry->NameInformation.FileName);
2609
2610                 AFSDeleteDirEntry( pTargetParentObject,
2611                                    pTargetDirEntry);
2612             }
2613
2614             pTargetDirEntry = NULL;
2615         }
2616
2617 try_exit:
2618
2619
2620         if( !NT_SUCCESS( ntStatus))
2621         {
2622
2623             if( bTargetEntryExists)
2624             {
2625                 AFSInsertDirectoryNode( pTargetDirEntry->ObjectInformation->ParentObjectInformation,
2626                                         pTargetDirEntry,
2627                                         FALSE);
2628             }
2629         }
2630
2631         if( pTargetDirEntry != NULL)
2632         {
2633
2634             InterlockedDecrement( &pTargetDirEntry->OpenReferenceCount);
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                                              &pCcb->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                                              &pCcb->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;