src/WINNT/afsrdr/kernel/lib/AFSWorker.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  *
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   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  *
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  11  *   this list of conditions and the following disclaimer.
  12  * - Redistributions in binary form must reproduce the above copyright
  13  *   notice,
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  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.
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  32  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  33  */
  34
  35 //
  36 // File: AFSWorker.cpp
  37 //
  38
  39 #include "AFSCommon.h"
  40
  41 //
  42 // Function: AFSInitializeWorkerPool
  43 //
  44 // Description:
  45 //
  46 //      This function initializes the worker thread pool
  47 //
  48 // Return:
  49 //
  50 //      A status is returned for the function
  51 //
  52
  53 NTSTATUS
  54 AFSInitializeWorkerPool()
  55 {
  56
  57     NTSTATUS ntStatus = STATUS_SUCCESS;
  58     AFSWorkQueueContext        *pCurrentWorker = NULL, *pLastWorker = NULL;
  59     AFSDeviceExt *pDevExt = NULL;
  60
  61     __Enter
  62     {
  63
  64         pDevExt = (AFSDeviceExt *)AFSLibraryDeviceObject->DeviceExtension;
  65
  66         //
  67         // Initialize the worker threads.
  68         //
  69
  70         pDevExt->Specific.Library.WorkerCount = 0;
  71
  72         KeInitializeEvent( &pDevExt->Specific.Library.WorkerQueueHasItems,
  73                            SynchronizationEvent,
  74                            FALSE);
  75
  76         //
  77         // Initialize the queue resource
  78         //
  79
  80         ExInitializeResourceLite( &pDevExt->Specific.Library.QueueLock);
  81
  82         while( pDevExt->Specific.Library.WorkerCount < AFS_WORKER_COUNT)
  83         {
  84
  85             pCurrentWorker = (AFSWorkQueueContext *)AFSLibExAllocatePoolWithTag( NonPagedPool,
  86                                                                                  sizeof( AFSWorkQueueContext),
  87                                                                                  AFS_WORKER_CB_TAG);
  88
  89             if( pCurrentWorker == NULL)
  90             {
  91
  92                 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
  93                               AFS_TRACE_LEVEL_ERROR,
  94                               "AFSInitializeWorkerPool Failed to allocate worker context\n");
  95
  96                 ntStatus = STATUS_INSUFFICIENT_RESOURCES;
  97
  98                 break;
  99             }
 100
 101             RtlZeroMemory( pCurrentWorker,
 102                            sizeof( AFSWorkQueueContext));
 103
 104             ntStatus = AFSInitWorkerThread( pCurrentWorker,
 105                                             (PKSTART_ROUTINE)AFSWorkerThread);
 106
 107             if( !NT_SUCCESS( ntStatus))
 108             {
 109
 110                 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
 111                               AFS_TRACE_LEVEL_ERROR,
 112                               "AFSInitializeWorkerPool Failed to initialize worker thread Status %08lX\n", ntStatus);
 113
 114                 ExFreePool( pCurrentWorker);
 115
 116                 break;
 117             }
 118
 119             if( pDevExt->Specific.Library.PoolHead == NULL)
 120             {
 121
 122                 pDevExt->Specific.Library.PoolHead = pCurrentWorker;
 123             }
 124             else
 125             {
 126
 127                 pLastWorker->fLink = pCurrentWorker;
 128             }
 129
 130             pLastWorker = pCurrentWorker;
 131
 132             pDevExt->Specific.Library.WorkerCount++;
 133         }
 134
 135         //
 136         // If there was a failure but there is at least one worker, then go with it.
 137         //
 138
 139         if( !NT_SUCCESS( ntStatus) &&
 140             pDevExt->Specific.Library.WorkerCount == 0)
 141         {
 142
 143             try_return( ntStatus);
 144         }
 145
 146         ntStatus = STATUS_SUCCESS;
 147
 148         //
 149         // Now our IO Worker queue
 150         //
 151
 152         pDevExt->Specific.Library.IOWorkerCount = 0;
 153
 154         KeInitializeEvent( &pDevExt->Specific.Library.IOWorkerQueueHasItems,
 155                            SynchronizationEvent,
 156                            FALSE);
 157
 158         //
 159         // Initialize the queue resource
 160         //
 161
 162         ExInitializeResourceLite( &pDevExt->Specific.Library.IOQueueLock);
 163
 164         while( pDevExt->Specific.Library.IOWorkerCount < AFS_IO_WORKER_COUNT)
 165         {
 166
 167             pCurrentWorker = (AFSWorkQueueContext *)AFSLibExAllocatePoolWithTag( NonPagedPool,
 168                                                                                  sizeof( AFSWorkQueueContext),
 169                                                                                  AFS_WORKER_CB_TAG);
 170
 171             if( pCurrentWorker == NULL)
 172             {
 173
 174                 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
 175                               AFS_TRACE_LEVEL_ERROR,
 176                               "AFSInitializeWorkerPool Failed to allocate IO worker context\n");
 177
 178                 ntStatus = STATUS_INSUFFICIENT_RESOURCES;
 179
 180                 break;
 181             }
 182
 183             RtlZeroMemory( pCurrentWorker,
 184                            sizeof( AFSWorkQueueContext));
 185
 186             ntStatus = AFSInitWorkerThread( pCurrentWorker,
 187                                             (PKSTART_ROUTINE)AFSIOWorkerThread);
 188
 189             if( !NT_SUCCESS( ntStatus))
 190             {
 191
 192                 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
 193                               AFS_TRACE_LEVEL_ERROR,
 194                               "AFSInitializeWorkerPool Failed to initialize IO worker thread Status %08lX\n", ntStatus);
 195
 196                 ExFreePool( pCurrentWorker);
 197
 198                 break;
 199             }
 200
 201             if( pDevExt->Specific.Library.IOPoolHead == NULL)
 202             {
 203
 204                 pDevExt->Specific.Library.IOPoolHead = pCurrentWorker;
 205             }
 206             else
 207             {
 208
 209                 pLastWorker->fLink = pCurrentWorker;
 210             }
 211
 212             pLastWorker = pCurrentWorker;
 213
 214             pDevExt->Specific.Library.IOWorkerCount++;
 215         }
 216
 217         //
 218         // If there was a failure but there is at least one worker, then go with it.
 219         //
 220
 221         if( !NT_SUCCESS( ntStatus) &&
 222             pDevExt->Specific.Library.IOWorkerCount == 0)
 223         {
 224
 225             try_return( ntStatus);
 226         }
 227
 228 try_exit:
 229
 230         if( !NT_SUCCESS( ntStatus))
 231         {
 232
 233             //
 234             // Failed to initialize the pool so tear it down
 235             //
 236
 237             AFSRemoveWorkerPool();
 238         }
 239     }
 240
 241     return ntStatus;
 242 }
 243
 244 //
 245 // Function: AFSRemoveWorkerPool
 246 //
 247 // Description:
 248 //
 249 //      This function tears down the worker thread pool
 250 //
 251 // Return:
 252 //
 253 //      A status is returned for the function
 254 //
 255
 256 NTSTATUS
 257 AFSRemoveWorkerPool()
 258 {
 259
 260     NTSTATUS ntStatus = STATUS_SUCCESS;
 261     ULONG index = 0;
 262     AFSWorkQueueContext        *pCurrentWorker = NULL, *pNextWorker = NULL;
 263     AFSDeviceExt *pDevExt = NULL;
 264
 265     pDevExt = (AFSDeviceExt *)AFSLibraryDeviceObject->DeviceExtension;
 266
 267     //
 268     // Loop through the workers shutting them down in two stages.
 269     // First, clear AFS_WORKER_PROCESS_REQUESTS so that workers
 270     // stop processing requests.  Second, call AFSShutdownWorkerThread()
 271     // to wake the workers and wait for them to exit.
 272     //
 273
 274     pCurrentWorker = pDevExt->Specific.Library.PoolHead;
 275
 276     while( index < pDevExt->Specific.Library.WorkerCount)
 277     {
 278
 279         ClearFlag( pCurrentWorker->State, AFS_WORKER_PROCESS_REQUESTS);
 280
 281         pCurrentWorker = pCurrentWorker->fLink;
 282
 283         if ( pCurrentWorker == NULL)
 284         {
 285
 286             break;
 287         }
 288
 289         index++;
 290     }
 291
 292     pCurrentWorker = pDevExt->Specific.Library.PoolHead;
 293
 294     index = 0;
 295
 296     while( index < pDevExt->Specific.Library.WorkerCount)
 297     {
 298
 299         ntStatus = AFSShutdownWorkerThread( pCurrentWorker);
 300
 301         pNextWorker = pCurrentWorker->fLink;
 302
 303         ExFreePool( pCurrentWorker);
 304
 305         pCurrentWorker = pNextWorker;
 306
 307         if( pCurrentWorker == NULL)
 308         {
 309
 310             break;
 311         }
 312
 313         index++;
 314     }
 315
 316     pDevExt->Specific.Library.PoolHead = NULL;
 317
 318     ExDeleteResourceLite( &pDevExt->Specific.Library.QueueLock);
 319
 320     //
 321     // Loop through the IO workers shutting them down in two stages.
 322     // First, clear AFS_WORKER_PROCESS_REQUESTS so that workers
 323     // stop processing requests.  Second, call AFSShutdownWorkerThread()
 324     // to wake the workers and wait for them to exit.
 325     //
 326
 327     pCurrentWorker = pDevExt->Specific.Library.IOPoolHead;
 328
 329     index = 0;
 330
 331     while( index < pDevExt->Specific.Library.IOWorkerCount)
 332     {
 333
 334         ClearFlag( pCurrentWorker->State, AFS_WORKER_PROCESS_REQUESTS);
 335
 336         pCurrentWorker = pCurrentWorker->fLink;
 337
 338         if ( pCurrentWorker == NULL)
 339         {
 340
 341             break;
 342         }
 343
 344         index++;
 345     }
 346
 347     pCurrentWorker = pDevExt->Specific.Library.IOPoolHead;
 348
 349     index = 0;
 350
 351     while( index < pDevExt->Specific.Library.IOWorkerCount)
 352     {
 353
 354         ntStatus = AFSShutdownIOWorkerThread( pCurrentWorker);
 355
 356         pNextWorker = pCurrentWorker->fLink;
 357
 358         ExFreePool( pCurrentWorker);
 359
 360         pCurrentWorker = pNextWorker;
 361
 362         if( pCurrentWorker == NULL)
 363         {
 364
 365             break;
 366         }
 367
 368         index++;
 369     }
 370
 371     pDevExt->Specific.Library.IOPoolHead = NULL;
 372
 373     ExDeleteResourceLite( &pDevExt->Specific.Library.IOQueueLock);
 374
 375     return ntStatus;
 376 }
 377
 378 NTSTATUS
 379 AFSInitVolumeWorker( IN AFSVolumeCB *VolumeCB)
 380 {
 381
 382     NTSTATUS ntStatus = STATUS_SUCCESS;
 383     AFSWorkQueueContext *pWorker = &VolumeCB->VolumeWorkerContext;
 384     HANDLE hThread;
 385     AFSDeviceExt *pControlDeviceExt = (AFSDeviceExt *)AFSControlDeviceObject->DeviceExtension;
 386     PKSTART_ROUTINE pStartRoutine = NULL;
 387     LONG lCount;
 388
 389     __Enter
 390     {
 391
 392         if( VolumeCB == AFSGlobalRoot)
 393         {
 394
 395             pStartRoutine = AFSPrimaryVolumeWorkerThread;
 396         }
 397         else
 398         {
 399
 400             pStartRoutine = AFSVolumeWorkerThread;
 401         }
 402
 403         //
 404         // Initialize the worker thread
 405         //
 406
 407         KeInitializeEvent( &pWorker->WorkerThreadReady,
 408                            NotificationEvent,
 409                            FALSE);
 410
 411         //
 412         // Set the worker to process requests
 413         //
 414
 415         pWorker->State = AFS_WORKER_PROCESS_REQUESTS;
 416
 417         //
 418         // Launch the thread
 419         //
 420
 421         ntStatus =  PsCreateSystemThread( &hThread,
 422                                           0,
 423                                           NULL,
 424                                           NULL,
 425                                           NULL,
 426                                           pStartRoutine,
 427                                           (void *)VolumeCB);
 428
 429         if( NT_SUCCESS( ntStatus))
 430         {
 431
 432             ObReferenceObjectByHandle( hThread,
 433                                        GENERIC_READ | GENERIC_WRITE,
 434                                        NULL,
 435                                        KernelMode,
 436                                        (PVOID *)&pWorker->WorkerThreadObject,
 437                                        NULL);
 438
 439             ntStatus = KeWaitForSingleObject( &pWorker->WorkerThreadReady,
 440                                               Executive,
 441                                               KernelMode,
 442                                               FALSE,
 443                                               NULL);
 444
 445             lCount = InterlockedIncrement( &pControlDeviceExt->Specific.Control.VolumeWorkerThreadCount);
 446
 447             if( lCount > 0)
 448             {
 449
 450                 KeClearEvent( &pControlDeviceExt->Specific.Control.VolumeWorkerCloseEvent);
 451             }
 452
 453             ZwClose( hThread);
 454         }
 455     }
 456
 457     return ntStatus;
 458 }
 459
 460 //
 461 // Function: AFSInitWorkerThread
 462 //
 463 // Description:
 464 //
 465 //      This function initializes a worker thread in the pool
 466 //
 467 // Return:
 468 //
 469 //      A status is returned for the function
 470 //
 471
 472 NTSTATUS
 473 AFSInitWorkerThread( IN AFSWorkQueueContext *PoolContext,
 474                      IN PKSTART_ROUTINE WorkerRoutine)
 475 {
 476
 477     NTSTATUS ntStatus = STATUS_SUCCESS;
 478     HANDLE Handle;
 479
 480     //
 481     // INitialize the worker signal thread
 482     //
 483
 484     KeInitializeEvent( &PoolContext->WorkerThreadReady,
 485                        NotificationEvent,
 486                        FALSE);
 487
 488     //
 489     // Set the worker to process requests
 490     //
 491
 492     PoolContext->State = AFS_WORKER_PROCESS_REQUESTS;
 493
 494     //
 495     // Launch the thread
 496     //
 497
 498     ntStatus =  PsCreateSystemThread( &Handle,
 499                                       0,
 500                                       NULL,
 501                                       NULL,
 502                                       NULL,
 503                                       WorkerRoutine,
 504                                       (void *)PoolContext);
 505
 506     if( NT_SUCCESS( ntStatus))
 507     {
 508
 509         ObReferenceObjectByHandle( Handle,
 510                                    GENERIC_READ | GENERIC_WRITE,
 511                                    NULL,
 512                                    KernelMode,
 513                                    (PVOID *)&PoolContext->WorkerThreadObject,
 514                                    NULL);
 515
 516         ntStatus = KeWaitForSingleObject( &PoolContext->WorkerThreadReady,
 517                                           Executive,
 518                                           KernelMode,
 519                                           FALSE,
 520                                           NULL);
 521
 522         ZwClose( Handle);
 523     }
 524
 525     return ntStatus;
 526 }
 527
 528 NTSTATUS
 529 AFSShutdownVolumeWorker( IN AFSVolumeCB *VolumeCB)
 530 {
 531
 532     NTSTATUS ntStatus = STATUS_SUCCESS;
 533     AFSWorkQueueContext *pWorker = &VolumeCB->VolumeWorkerContext;
 534
 535     if( pWorker->WorkerThreadObject != NULL &&
 536         BooleanFlagOn( pWorker->State, AFS_WORKER_INITIALIZED))
 537     {
 538
 539         //
 540         // Clear the 'keep processing' flag
 541         //
 542
 543         ClearFlag( pWorker->State, AFS_WORKER_PROCESS_REQUESTS);
 544
 545         ntStatus = KeWaitForSingleObject( pWorker->WorkerThreadObject,
 546                                           Executive,
 547                                           KernelMode,
 548                                           FALSE,
 549                                           NULL);
 550
 551         ObDereferenceObject( pWorker->WorkerThreadObject);
 552
 553         pWorker->WorkerThreadObject = NULL;
 554     }
 555
 556     return ntStatus;
 557 }
 558
 559 //
 560 // Function: AFSShutdownWorkerThread
 561 //
 562 // Description:
 563 //
 564 //      This function shutsdown a worker thread in the pool
 565 //
 566 // Return:
 567 //
 568 //      A status is returned for the function
 569 //
 570
 571 NTSTATUS
 572 AFSShutdownWorkerThread( IN AFSWorkQueueContext *PoolContext)
 573 {
 574
 575     NTSTATUS ntStatus = STATUS_SUCCESS;
 576     AFSDeviceExt *pDeviceExt = (AFSDeviceExt *)AFSLibraryDeviceObject->DeviceExtension;
 577
 578     if( PoolContext->WorkerThreadObject != NULL &&
 579         BooleanFlagOn( PoolContext->State, AFS_WORKER_INITIALIZED))
 580     {
 581
 582         //
 583         // Wake up the thread if it is a sleep
 584         //
 585
 586         KeSetEvent( &pDeviceExt->Specific.Library.WorkerQueueHasItems,
 587                     0,
 588                     FALSE);
 589
 590         ntStatus = KeWaitForSingleObject( PoolContext->WorkerThreadObject,
 591                                           Executive,
 592                                           KernelMode,
 593                                           FALSE,
 594                                           NULL);
 595
 596         ObDereferenceObject( PoolContext->WorkerThreadObject);
 597
 598         PoolContext->WorkerThreadObject = NULL;
 599     }
 600
 601     return ntStatus;
 602 }
 603
 604 //
 605 // Function: AFSShutdownIOWorkerThread
 606 //
 607 // Description:
 608 //
 609 //      This function shutsdown an IO worker thread in the pool
 610 //
 611 // Return:
 612 //
 613 //      A status is returned for the function
 614 //
 615
 616 NTSTATUS
 617 AFSShutdownIOWorkerThread( IN AFSWorkQueueContext *PoolContext)
 618 {
 619
 620     NTSTATUS ntStatus = STATUS_SUCCESS;
 621     AFSDeviceExt *pDeviceExt = (AFSDeviceExt *)AFSLibraryDeviceObject->DeviceExtension;
 622
 623     if( PoolContext->WorkerThreadObject != NULL &&
 624         BooleanFlagOn( PoolContext->State, AFS_WORKER_INITIALIZED))
 625     {
 626
 627         //
 628         // Wake up the thread if it is a sleep
 629         //
 630
 631         KeSetEvent( &pDeviceExt->Specific.Library.IOWorkerQueueHasItems,
 632                     0,
 633                     FALSE);
 634
 635         ntStatus = KeWaitForSingleObject( PoolContext->WorkerThreadObject,
 636                                           Executive,
 637                                           KernelMode,
 638                                           FALSE,
 639                                           NULL);
 640
 641         ObDereferenceObject( PoolContext->WorkerThreadObject);
 642
 643         PoolContext->WorkerThreadObject = NULL;
 644     }
 645
 646     return ntStatus;
 647 }
 648
 649 //
 650 // Function: AFSWorkerThread
 651 //
 652 // Description:
 653 //
 654 //      This is the worker thread entry point.
 655 //
 656 // Return:
 657 //
 658 //      A status is returned for the function
 659 //
 660
 661 void
 662 AFSWorkerThread( IN PVOID Context)
 663 {
 664
 665     NTSTATUS ntStatus = STATUS_SUCCESS;
 666     AFSWorkQueueContext *pPoolContext = (AFSWorkQueueContext *)Context;
 667     AFSWorkItem *pWorkItem;
 668     BOOLEAN freeWorkItem = TRUE;
 669     AFSDeviceExt *pLibraryDevExt = NULL;
 670     LONG lCount;
 671
 672     pLibraryDevExt = (AFSDeviceExt *)AFSLibraryDeviceObject->DeviceExtension;
 673
 674     //
 675     // Indicate that we are initialized and ready
 676     //
 677
 678     KeSetEvent( &pPoolContext->WorkerThreadReady,
 679                 0,
 680                 FALSE);
 681
 682     //
 683     // Indicate we are initialized
 684     //
 685
 686     SetFlag( pPoolContext->State, AFS_WORKER_INITIALIZED);
 687
 688     ntStatus = KeWaitForSingleObject( &pLibraryDevExt->Specific.Library.WorkerQueueHasItems,
 689                                       Executive,
 690                                       KernelMode,
 691                                       FALSE,
 692                                       NULL);
 693
 694     while( BooleanFlagOn( pPoolContext->State, AFS_WORKER_PROCESS_REQUESTS))
 695     {
 696
 697         if( !NT_SUCCESS( ntStatus))
 698         {
 699
 700             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
 701                           AFS_TRACE_LEVEL_ERROR,
 702                           "AFSWorkerThread Wait for queue items failed Status %08lX\n", ntStatus);
 703
 704             ntStatus = STATUS_SUCCESS;
 705         }
 706         else
 707         {
 708
 709             pWorkItem = AFSRemoveWorkItem();
 710
 711             if( pWorkItem == NULL)
 712             {
 713
 714                 ntStatus = KeWaitForSingleObject( &pLibraryDevExt->Specific.Library.WorkerQueueHasItems,
 715                                                   Executive,
 716                                                   KernelMode,
 717                                                   FALSE,
 718                                                   NULL);
 719             }
 720             else
 721             {
 722
 723                 freeWorkItem = TRUE;
 724
 725                 //
 726                 // Switch on the type of work item to process
 727                 //
 728
 729                 switch( pWorkItem->RequestType)
 730                 {
 731
 732                     case AFS_WORK_FLUSH_FCB:
 733                     {
 734
 735                         ntStatus = AFSFlushExtents( pWorkItem->Specific.Fcb.Fcb,
 736                                                     &pWorkItem->AuthGroup);
 737
 738                         if( !NT_SUCCESS( ntStatus))
 739                         {
 740
 741                             AFSReleaseExtentsWithFlush( pWorkItem->Specific.Fcb.Fcb,
 742                                                         &pWorkItem->AuthGroup);
 743                         }
 744
 745                         ASSERT( pWorkItem->Specific.Fcb.Fcb->OpenReferenceCount != 0);
 746
 747                         lCount = InterlockedDecrement( &pWorkItem->Specific.Fcb.Fcb->OpenReferenceCount);
 748
 749                         break;
 750                     }
 751
 752                     case AFS_WORK_ASYNCH_READ:
 753                     {
 754
 755                         ASSERT( pWorkItem->Specific.AsynchIo.CallingProcess != NULL);
 756
 757                         (VOID) AFSCommonRead( pWorkItem->Specific.AsynchIo.Device,
 758                                               pWorkItem->Specific.AsynchIo.Irp,
 759                                               pWorkItem->Specific.AsynchIo.CallingProcess);
 760
 761                         break;
 762                     }
 763
 764                     case AFS_WORK_ASYNCH_WRITE:
 765                     {
 766
 767                         ASSERT( pWorkItem->Specific.AsynchIo.CallingProcess != NULL);
 768
 769                         (VOID) AFSCommonWrite( pWorkItem->Specific.AsynchIo.Device,
 770                                                pWorkItem->Specific.AsynchIo.Irp,
 771                                                pWorkItem->Specific.AsynchIo.CallingProcess);
 772                         break;
 773                     }
 774
 775                     case AFS_WORK_ENUMERATE_GLOBAL_ROOT:
 776                     {
 777
 778                         AFSEnumerateGlobalRoot( NULL);
 779
 780                         break;
 781                     }
 782
 783                     case AFS_WORK_INVALIDATE_OBJECT:
 784                     {
 785
 786                         AFSPerformObjectInvalidate( pWorkItem->Specific.Invalidate.ObjectInfo,
 787                                                     pWorkItem->Specific.Invalidate.InvalidateReason);
 788
 789                         freeWorkItem = TRUE;
 790
 791                         break;
 792                     }
 793
 794                     case AFS_WORK_START_IOS:
 795                     {
 796
 797                         freeWorkItem = TRUE;
 798
 799                         break;
 800                     }
 801
 802                     default:
 803
 804                         AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
 805                                       AFS_TRACE_LEVEL_ERROR,
 806                                       "AFSWorkerThread Unknown request type %d\n", pWorkItem->RequestType);
 807
 808                         break;
 809                 }
 810
 811                 if( freeWorkItem)
 812                 {
 813
 814                     ExFreePoolWithTag( pWorkItem, AFS_WORK_ITEM_TAG);
 815                 }
 816
 817                 ntStatus = STATUS_SUCCESS;
 818             }
 819         }
 820     } // worker thread loop
 821
 822     ClearFlag( pPoolContext->State, AFS_WORKER_INITIALIZED);
 823
 824     // Wake up another worker so they too can exit
 825
 826     KeSetEvent( &pLibraryDevExt->Specific.Library.WorkerQueueHasItems,
 827                 0,
 828                 FALSE);
 829
 830     PsTerminateSystemThread( 0);
 831
 832     return;
 833 }
 834
 835 void
 836 AFSIOWorkerThread( IN PVOID Context)
 837 {
 838
 839     NTSTATUS ntStatus = STATUS_SUCCESS;
 840     AFSWorkQueueContext *pPoolContext = (AFSWorkQueueContext *)Context;
 841     AFSWorkItem *pWorkItem;
 842     BOOLEAN freeWorkItem = TRUE;
 843     AFSDeviceExt *pLibraryDevExt = NULL, *pRdrDevExt = NULL;
 844
 845     pLibraryDevExt = (AFSDeviceExt *)AFSLibraryDeviceObject->DeviceExtension;
 846
 847     //
 848     // Indicate that we are initialized and ready
 849     //
 850
 851     KeSetEvent( &pPoolContext->WorkerThreadReady,
 852                 0,
 853                 FALSE);
 854
 855
 856     //
 857     // Indicate we are initialized
 858     //
 859
 860     SetFlag( pPoolContext->State, AFS_WORKER_INITIALIZED);
 861
 862     ntStatus = KeWaitForSingleObject( &pLibraryDevExt->Specific.Library.IOWorkerQueueHasItems,
 863                                       Executive,
 864                                       KernelMode,
 865                                       FALSE,
 866                                       NULL);
 867
 868     while( BooleanFlagOn( pPoolContext->State, AFS_WORKER_PROCESS_REQUESTS))
 869     {
 870
 871         if( !NT_SUCCESS( ntStatus))
 872         {
 873
 874             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
 875                           AFS_TRACE_LEVEL_ERROR,
 876                           "AFSIOWorkerThread Wait for queue items failed Status %08lX\n", ntStatus);
 877
 878             ntStatus = STATUS_SUCCESS;
 879         }
 880         else
 881         {
 882
 883             pWorkItem = AFSRemoveIOWorkItem();
 884
 885             if( pWorkItem == NULL)
 886             {
 887
 888                 ntStatus = KeWaitForSingleObject( &pLibraryDevExt->Specific.Library.IOWorkerQueueHasItems,
 889                                                   Executive,
 890                                                   KernelMode,
 891                                                   FALSE,
 892                                                   NULL);
 893             }
 894             else
 895             {
 896
 897                 freeWorkItem = TRUE;
 898
 899                 //
 900                 // Switch on the type of work item to process
 901                 //
 902
 903                 switch( pWorkItem->RequestType)
 904                 {
 905
 906                     case AFS_WORK_START_IOS:
 907                     {
 908
 909                         pRdrDevExt = (AFSDeviceExt *)AFSRDRDeviceObject->DeviceExtension;
 910
 911                         //
 912                         // The final status is in the gather io
 913                         //
 914
 915                         ntStatus = AFSStartIos( pWorkItem->Specific.CacheAccess.CacheFileObject,
 916                                                 pWorkItem->Specific.CacheAccess.FunctionCode,
 917                                                 pWorkItem->Specific.CacheAccess.RequestFlags,
 918                                                 pWorkItem->Specific.CacheAccess.IoRuns,
 919                                                 pWorkItem->Specific.CacheAccess.RunCount,
 920                                                 pWorkItem->Specific.CacheAccess.GatherIo);
 921
 922                         //
 923                         // Regardless of the status we we do the complete - there may
 924                         // be IOs in flight
 925                         // Decrement the count - setting the event if we were told
 926                         // to. This may trigger completion.
 927                         //
 928
 929                         AFSCompleteIo( pWorkItem->Specific.CacheAccess.GatherIo, ntStatus );
 930
 931                         freeWorkItem = TRUE;
 932
 933                         break;
 934                     }
 935
 936                     default:
 937
 938                         AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
 939                                       AFS_TRACE_LEVEL_ERROR,
 940                                       "AFSWorkerThread Unknown request type %d\n", pWorkItem->RequestType);
 941
 942                         break;
 943                 }
 944
 945                 if( freeWorkItem)
 946                 {
 947
 948                     ExFreePoolWithTag( pWorkItem, AFS_WORK_ITEM_TAG);
 949                 }
 950
 951                 ntStatus = STATUS_SUCCESS;
 952             }
 953         }
 954     } // worker thread loop
 955
 956     ClearFlag( pPoolContext->State, AFS_WORKER_INITIALIZED);
 957
 958     // Wake up another IOWorker so they too can exit
 959
 960     KeSetEvent( &pLibraryDevExt->Specific.Library.IOWorkerQueueHasItems,
 961                 0,
 962                 FALSE);
 963
 964     PsTerminateSystemThread( 0);
 965
 966     return;
 967 }
 968
 969 void
 970 AFSPrimaryVolumeWorkerThread( IN PVOID Context)
 971 {
 972
 973     NTSTATUS ntStatus = STATUS_SUCCESS;
 974     AFSWorkQueueContext *pPoolContext = (AFSWorkQueueContext *)&AFSGlobalRoot->VolumeWorkerContext;
 975     AFSDeviceExt *pControlDeviceExt = NULL;
 976     AFSDeviceExt *pRDRDeviceExt = NULL;
 977     LARGE_INTEGER DueTime;
 978     LONG TimeOut;
 979     KTIMER Timer;
 980     BOOLEAN bFoundOpenEntry = FALSE;
 981     AFSObjectInfoCB *pCurrentObject = NULL, *pNextObject = NULL, *pCurrentChildObject = NULL;
 982     AFSDirectoryCB *pCurrentDirEntry = NULL, *pNextDirEntry = NULL;
 983     BOOLEAN bReleaseVolumeLock = FALSE;
 984     AFSVolumeCB *pVolumeCB = NULL, *pNextVolume = NULL;
 985     AFSFcb *pFcb = NULL;
 986     LONG lFileType;
 987     LARGE_INTEGER liCurrentTime;
 988     BOOLEAN bVolumeObject = FALSE;
 989     LONG lCount;
 990
 991     pControlDeviceExt = (AFSDeviceExt *)AFSControlDeviceObject->DeviceExtension;
 992
 993     pRDRDeviceExt = (AFSDeviceExt *)AFSRDRDeviceObject->DeviceExtension;
 994
 995     AFSDbgLogMsg( AFS_SUBSYSTEM_CLEANUP_PROCESSING,
 996                   AFS_TRACE_LEVEL_VERBOSE,
 997                   "AFSPrimaryVolumeWorkerThread Initialized\n");
 998
 999     //
1000     // Initialize the timer for the worker thread
1001     //
1002
1003     DueTime.QuadPart = -(5000);
1004
1005     TimeOut = 5000;
1006
1007     KeInitializeTimerEx( &Timer,
1008                          SynchronizationTimer);
1009
1010     KeSetTimerEx( &Timer,
1011                   DueTime,
1012                   TimeOut,
1013                   NULL);
1014
1015     //
1016     // Indicate that we are initialized and ready
1017     //
1018
1019     KeSetEvent( &pPoolContext->WorkerThreadReady,
1020                 0,
1021                 FALSE);
1022
1023     //
1024     // Indicate we are initialized
1025     //
1026
1027     SetFlag( pPoolContext->State, AFS_WORKER_INITIALIZED);
1028
1029     while( BooleanFlagOn( pPoolContext->State, AFS_WORKER_PROCESS_REQUESTS))
1030     {
1031
1032         KeWaitForSingleObject( &Timer,
1033                                Executive,
1034                                KernelMode,
1035                                FALSE,
1036                                NULL);
1037
1038         //
1039         // This is the primary volume worker so it will traverse the volume list
1040         // looking for cleanup or volumes requiring private workers
1041         //
1042
1043         AFSAcquireShared( &pRDRDeviceExt->Specific.RDR.VolumeListLock,
1044                           TRUE);
1045
1046         pVolumeCB = pRDRDeviceExt->Specific.RDR.VolumeListHead;
1047
1048         while( pVolumeCB != NULL)
1049         {
1050
1051             if( pVolumeCB == AFSGlobalRoot ||
1052                 !AFSAcquireExcl( pVolumeCB->VolumeLock,
1053                                  FALSE))
1054             {
1055
1056                 pVolumeCB = (AFSVolumeCB *)pVolumeCB->ListEntry.fLink;
1057
1058                 continue;
1059             }
1060
1061             if( pVolumeCB->ObjectInfoListHead == NULL)
1062             {
1063
1064                 AFSReleaseResource( pVolumeCB->VolumeLock);
1065
1066                 AFSReleaseResource( &pRDRDeviceExt->Specific.RDR.VolumeListLock);
1067
1068                 AFSAcquireExcl( pRDRDeviceExt->Specific.RDR.VolumeTree.TreeLock,
1069                                 TRUE);
1070
1071                 AFSAcquireExcl( &pRDRDeviceExt->Specific.RDR.VolumeListLock,
1072                                 TRUE);
1073
1074                 if( !AFSAcquireExcl( pVolumeCB->VolumeLock,
1075                                      FALSE))
1076                 {
1077
1078                     AFSConvertToShared( &pRDRDeviceExt->Specific.RDR.VolumeListLock);
1079
1080                     AFSReleaseResource( pRDRDeviceExt->Specific.RDR.VolumeTree.TreeLock);
1081
1082                     pVolumeCB = (AFSVolumeCB *)pVolumeCB->ListEntry.fLink;
1083
1084                     continue;
1085                 }
1086
1087                 KeQueryTickCount( &liCurrentTime);
1088
1089                 pNextVolume = (AFSVolumeCB *)pVolumeCB->ListEntry.fLink;
1090
1091                 if( pVolumeCB->ObjectInfoListHead == NULL &&
1092                     pVolumeCB->DirectoryCB->OpenReferenceCount == 0 &&
1093                     pVolumeCB->VolumeReferenceCount == 1 &&
1094                     ( pVolumeCB->RootFcb == NULL ||
1095                       pVolumeCB->RootFcb->OpenReferenceCount == 0) &&
1096                     pVolumeCB->ObjectInformation.ObjectReferenceCount <= 0)
1097                 {
1098
1099                     if( pVolumeCB->RootFcb != NULL)
1100                     {
1101
1102                         AFSRemoveRootFcb( pVolumeCB->RootFcb);
1103                     }
1104
1105                     AFSRemoveVolume( pVolumeCB);
1106                 }
1107                 else
1108                 {
1109
1110                     AFSReleaseResource( pVolumeCB->VolumeLock);
1111                 }
1112
1113                 AFSConvertToShared( &pRDRDeviceExt->Specific.RDR.VolumeListLock);
1114
1115                 AFSReleaseResource( pRDRDeviceExt->Specific.RDR.VolumeTree.TreeLock);
1116
1117                 pVolumeCB = pNextVolume;
1118
1119                 continue;
1120             }
1121
1122             //
1123             // Don't need this lock anymore now that we have a volume cb to work with
1124             //
1125
1126             AFSReleaseResource( &pRDRDeviceExt->Specific.RDR.VolumeListLock);
1127
1128             //
1129             // For now we only need the volume lock shared
1130             //
1131
1132             AFSConvertToShared( pVolumeCB->VolumeLock);
1133
1134             if( AFSAcquireShared( pVolumeCB->ObjectInfoTree.TreeLock,
1135                                   FALSE))
1136             {
1137
1138                 pCurrentObject = pVolumeCB->ObjectInfoListHead;
1139
1140                 pNextObject = NULL;
1141
1142                 bReleaseVolumeLock = TRUE;
1143
1144                 while( pCurrentObject != NULL)
1145                 {
1146
1147                     if( pCurrentObject != &pVolumeCB->ObjectInformation)
1148                     {
1149
1150                         pNextObject = (AFSObjectInfoCB *)pCurrentObject->ListEntry.fLink;
1151
1152                         if( pNextObject == NULL &&
1153                             pVolumeCB != AFSGlobalRoot)  // Don't free up the root of the global
1154                         {
1155
1156                             pNextObject = &pVolumeCB->ObjectInformation;
1157                         }
1158
1159                         bVolumeObject = FALSE;
1160                     }
1161                     else
1162                     {
1163
1164                         pNextObject = NULL;
1165
1166                         bVolumeObject = TRUE;
1167                     }
1168
1169                     if( pCurrentObject->FileType == AFS_FILE_TYPE_DIRECTORY &&
1170                         !BooleanFlagOn( pRDRDeviceExt->DeviceFlags, AFS_DEVICE_FLAG_REDIRECTOR_SHUTDOWN))  // If we are in shutdown mode skip directories
1171                     {
1172
1173                         //
1174                         // If this object is deleted then remove it from the parent, if we can
1175                         //
1176
1177                         if( BooleanFlagOn( pCurrentObject->Flags, AFS_OBJECT_FLAGS_DELETED) &&
1178                             pCurrentObject->ObjectReferenceCount <= 0 &&
1179                             ( pCurrentObject->Fcb == NULL ||
1180                               pCurrentObject->Fcb->OpenReferenceCount == 0) &&
1181                             pCurrentObject->Specific.Directory.DirectoryNodeListHead == NULL &&
1182                             pCurrentObject->Specific.Directory.ChildOpenReferenceCount == 0)
1183                         {
1184
1185                             AFSReleaseResource( pVolumeCB->ObjectInfoTree.TreeLock);
1186
1187                             //
1188                             // Dropping the TreeLock permits the
1189                             // pCurrentObject->ObjectReferenceCount to change
1190                             //
1191
1192                             if( AFSAcquireExcl( pVolumeCB->ObjectInfoTree.TreeLock,
1193                                                 FALSE))
1194                             {
1195
1196                                 if ( pCurrentObject->ObjectReferenceCount <= 0)
1197                                 {
1198
1199                                     if( pCurrentObject->Fcb != NULL)
1200                                     {
1201
1202                                         AFSRemoveFcb( &pCurrentObject->Fcb);
1203                                     }
1204
1205                                     if( pCurrentObject->Specific.Directory.PIOCtlDirectoryCB != NULL)
1206                                     {
1207
1208                                         if( pCurrentObject->Specific.Directory.PIOCtlDirectoryCB->ObjectInformation->Fcb != NULL)
1209                                         {
1210
1211                                             AFSRemoveFcb( &pCurrentObject->Specific.Directory.PIOCtlDirectoryCB->ObjectInformation->Fcb);
1212                                         }
1213
1214                                         AFSDeleteObjectInfo( pCurrentObject->Specific.Directory.PIOCtlDirectoryCB->ObjectInformation);
1215
1216                                         ExDeleteResourceLite( &pCurrentChildObject->Specific.Directory.PIOCtlDirectoryCB->NonPaged->Lock);
1217
1218                                         AFSExFreePool( pCurrentChildObject->Specific.Directory.PIOCtlDirectoryCB->NonPaged);
1219
1220                                         AFSExFreePool( pCurrentObject->Specific.Directory.PIOCtlDirectoryCB);
1221                                     }
1222
1223                                     AFSDbgLogMsg( AFS_SUBSYSTEM_CLEANUP_PROCESSING,
1224                                                   AFS_TRACE_LEVEL_VERBOSE,
1225                                                   "AFSPrimaryVolumeWorkerThread Deleting deleted object %08lX\n",
1226                                                   pCurrentObject);
1227
1228                                     AFSDeleteObjectInfo( pCurrentObject);
1229                                 }
1230
1231                                 AFSConvertToShared( pVolumeCB->ObjectInfoTree.TreeLock);
1232
1233                                 pCurrentObject = pNextObject;
1234
1235                                 continue;
1236                             }
1237                             else
1238                             {
1239
1240                                 bReleaseVolumeLock = FALSE;
1241
1242                                 break;
1243                             }
1244                         }
1245
1246                         if( pCurrentObject->Specific.Directory.ChildOpenReferenceCount > 0 ||
1247                             ( pCurrentObject->Fcb != NULL &&
1248                               pCurrentObject->Fcb->OpenReferenceCount > 0) ||
1249                             pCurrentObject->Specific.Directory.DirectoryNodeListHead == NULL)
1250                         {
1251
1252                             pCurrentObject = pNextObject;
1253
1254                             continue;
1255                         }
1256
1257                         if( !AFSAcquireShared( pCurrentObject->Specific.Directory.DirectoryNodeHdr.TreeLock,
1258                                                FALSE))
1259                         {
1260
1261                             pCurrentObject = pNextObject;
1262
1263                             continue;
1264                         }
1265
1266                         KeQueryTickCount( &liCurrentTime);
1267
1268                         pCurrentDirEntry = pCurrentObject->Specific.Directory.DirectoryNodeListHead;
1269
1270                         while( pCurrentDirEntry != NULL)
1271                         {
1272
1273                             if( pCurrentDirEntry->OpenReferenceCount > 0 ||
1274                                 ( pCurrentDirEntry->ObjectInformation->Fcb != NULL &&
1275                                   pCurrentDirEntry->ObjectInformation->Fcb->OpenReferenceCount > 0) ||
1276                                 liCurrentTime.QuadPart <= pCurrentDirEntry->ObjectInformation->LastAccessCount.QuadPart ||
1277                                 liCurrentTime.QuadPart - pCurrentDirEntry->ObjectInformation->LastAccessCount.QuadPart <
1278                                                                         pControlDeviceExt->Specific.Control.ObjectLifeTimeCount.QuadPart ||
1279                                 ( pCurrentDirEntry->ObjectInformation->FileType == AFS_FILE_TYPE_DIRECTORY &&
1280                                    ( pCurrentDirEntry->ObjectInformation->Specific.Directory.DirectoryNodeListHead != NULL ||
1281                                      pCurrentDirEntry->ObjectInformation->Specific.Directory.ChildOpenReferenceCount > 0)) ||
1282                                 ( pCurrentDirEntry->ObjectInformation->FileType == AFS_FILE_TYPE_FILE &&
1283                                   pCurrentDirEntry->ObjectInformation->Fcb != NULL &&
1284                                   pCurrentDirEntry->ObjectInformation->Fcb->Specific.File.ExtentsDirtyCount > 0))
1285                             {
1286
1287                                 break;
1288                             }
1289
1290                             pCurrentDirEntry = (AFSDirectoryCB *)pCurrentDirEntry->ListEntry.fLink;
1291                         }
1292
1293                         if( pCurrentDirEntry != NULL)
1294                         {
1295
1296                             AFSReleaseResource( pCurrentObject->Specific.Directory.DirectoryNodeHdr.TreeLock);
1297
1298                             pCurrentObject = pNextObject;
1299
1300                             continue;
1301                         }
1302
1303                         AFSReleaseResource( pCurrentObject->Specific.Directory.DirectoryNodeHdr.TreeLock);
1304
1305                         AFSReleaseResource( pVolumeCB->ObjectInfoTree.TreeLock);
1306
1307                         //
1308                         // Now acquire the locks excl
1309                         //
1310
1311                         if( AFSAcquireExcl( pCurrentObject->Specific.Directory.DirectoryNodeHdr.TreeLock,
1312                                             FALSE))
1313                         {
1314
1315                             if( AFSAcquireExcl( pVolumeCB->ObjectInfoTree.TreeLock,
1316                                                 FALSE))
1317                             {
1318
1319                                 if( pCurrentObject->Specific.Directory.ChildOpenReferenceCount > 0)
1320                                 {
1321
1322                                     AFSReleaseResource( pCurrentObject->Specific.Directory.DirectoryNodeHdr.TreeLock);
1323
1324                                     AFSConvertToShared( pVolumeCB->ObjectInfoTree.TreeLock);
1325
1326                                     pCurrentObject = pNextObject;
1327
1328                                     continue;
1329                                 }
1330
1331                                 KeQueryTickCount( &liCurrentTime);
1332
1333                                 pCurrentDirEntry = pCurrentObject->Specific.Directory.DirectoryNodeListHead;
1334
1335                                 while( pCurrentDirEntry != NULL)
1336                                 {
1337
1338                                     if( pCurrentDirEntry->OpenReferenceCount > 0 ||
1339                                         ( pCurrentDirEntry->ObjectInformation->Fcb != NULL &&
1340                                           pCurrentDirEntry->ObjectInformation->Fcb->OpenReferenceCount > 0) ||
1341                                         liCurrentTime.QuadPart <= pCurrentDirEntry->ObjectInformation->LastAccessCount.QuadPart ||
1342                                         liCurrentTime.QuadPart - pCurrentDirEntry->ObjectInformation->LastAccessCount.QuadPart <
1343                                                                                 pControlDeviceExt->Specific.Control.ObjectLifeTimeCount.QuadPart ||
1344                                         ( pCurrentDirEntry->ObjectInformation->FileType == AFS_FILE_TYPE_DIRECTORY &&
1345                                           ( pCurrentDirEntry->ObjectInformation->Specific.Directory.DirectoryNodeListHead != NULL ||
1346                                             pCurrentDirEntry->ObjectInformation->Specific.Directory.ChildOpenReferenceCount > 0)) ||
1347                                         ( pCurrentDirEntry->ObjectInformation->FileType == AFS_FILE_TYPE_FILE &&
1348                                           pCurrentDirEntry->ObjectInformation->Fcb != NULL &&
1349                                           pCurrentDirEntry->ObjectInformation->Fcb->Specific.File.ExtentsDirtyCount > 0))
1350                                     {
1351
1352                                         break;
1353                                     }
1354
1355                                     pCurrentDirEntry = (AFSDirectoryCB *)pCurrentDirEntry->ListEntry.fLink;
1356                                 }
1357
1358                                 if( pCurrentDirEntry != NULL)
1359                                 {
1360
1361                                     AFSReleaseResource( pCurrentObject->Specific.Directory.DirectoryNodeHdr.TreeLock);
1362
1363                                     AFSConvertToShared( pVolumeCB->ObjectInfoTree.TreeLock);
1364
1365                                     pCurrentObject = pNextObject;
1366
1367                                     continue;
1368                                 }
1369
1370                                 pCurrentDirEntry = pCurrentObject->Specific.Directory.DirectoryNodeListHead;
1371
1372                                 while( pCurrentDirEntry != NULL)
1373                                 {
1374
1375                                     pNextDirEntry = (AFSDirectoryCB *)pCurrentDirEntry->ListEntry.fLink;
1376
1377                                     pCurrentChildObject = pCurrentDirEntry->ObjectInformation;
1378
1379                                     pFcb = NULL;
1380
1381                                     AFSDbgLogMsg( AFS_SUBSYSTEM_CLEANUP_PROCESSING,
1382                                                   AFS_TRACE_LEVEL_VERBOSE,
1383                                                   "AFSPrimaryVolumeWorkerThread Deleting DE %wZ Object %08lX\n",
1384                                                   &pCurrentDirEntry->NameInformation.FileName,
1385                                                   pCurrentChildObject);
1386
1387                                     AFSDeleteDirEntry( pCurrentObject,
1388                                                        pCurrentDirEntry);
1389
1390                                     if( pCurrentChildObject->ObjectReferenceCount <= 0)
1391                                     {
1392
1393                                         if( pCurrentChildObject->Fcb != NULL)
1394                                         {
1395
1396                                             pFcb = (AFSFcb *) InterlockedCompareExchangePointer( (PVOID *)&pCurrentChildObject->Fcb, NULL, (PVOID)pCurrentChildObject->Fcb);
1397
1398                                             lFileType = pCurrentChildObject->FileType;
1399                                         }
1400
1401                                         if( pCurrentChildObject->FileType == AFS_FILE_TYPE_DIRECTORY &&
1402                                             pCurrentChildObject->Specific.Directory.PIOCtlDirectoryCB != NULL)
1403                                         {
1404
1405                                             if( pCurrentChildObject->Specific.Directory.PIOCtlDirectoryCB->ObjectInformation->Fcb != NULL)
1406                                             {
1407
1408                                                 AFSRemoveFcb( &pCurrentChildObject->Specific.Directory.PIOCtlDirectoryCB->ObjectInformation->Fcb);
1409                                             }
1410
1411                                             AFSDeleteObjectInfo( pCurrentChildObject->Specific.Directory.PIOCtlDirectoryCB->ObjectInformation);
1412
1413                                             ExDeleteResourceLite( &pCurrentChildObject->Specific.Directory.PIOCtlDirectoryCB->NonPaged->Lock);
1414
1415                                             AFSExFreePool( pCurrentChildObject->Specific.Directory.PIOCtlDirectoryCB->NonPaged);
1416
1417                                             AFSExFreePool( pCurrentChildObject->Specific.Directory.PIOCtlDirectoryCB);
1418                                         }
1419
1420                                         AFSDbgLogMsg( AFS_SUBSYSTEM_CLEANUP_PROCESSING,
1421                                                       AFS_TRACE_LEVEL_VERBOSE,
1422                                                       "AFSPrimaryVolumeWorkerThread Deleting object %08lX\n",
1423                                                       pCurrentChildObject);
1424
1425                                         AFSDeleteObjectInfo( pCurrentChildObject);
1426                                     }
1427
1428                                     pCurrentDirEntry = pNextDirEntry;
1429
1430                                     if ( pFcb != NULL)
1431                                     {
1432
1433                                         if( lFileType == AFS_FILE_TYPE_FILE)
1434                                         {
1435                                             //
1436                                             // We must not hold pVolumeCB->ObjectInfoTree.TreeLock exclusive
1437                                             // across an AFSCleanupFcb call since it can deadlock with an
1438                                             // invalidation call from the service.
1439                                             //
1440
1441                                             AFSReleaseResource( pVolumeCB->ObjectInfoTree.TreeLock);
1442
1443                                             //
1444                                             // Dropping the TreeLock permits the
1445                                             // pCurrentObject->ObjectReferenceCount to change
1446                                             //
1447
1448                                             AFSCleanupFcb( pFcb,
1449                                                            TRUE);
1450
1451                                             AFSAcquireExcl( pVolumeCB->ObjectInfoTree.TreeLock,
1452                                                             TRUE);
1453                                         }
1454
1455                                         AFSRemoveFcb( &pFcb);
1456                                     }
1457                                 }
1458
1459                                 pCurrentObject->Specific.Directory.DirectoryNodeListHead = NULL;
1460
1461                                 pCurrentObject->Specific.Directory.DirectoryNodeListTail = NULL;
1462
1463                                 pCurrentObject->Specific.Directory.ShortNameTree = NULL;
1464
1465                                 pCurrentObject->Specific.Directory.DirectoryNodeHdr.CaseSensitiveTreeHead = NULL;
1466
1467                                 pCurrentObject->Specific.Directory.DirectoryNodeHdr.CaseInsensitiveTreeHead = NULL;
1468
1469                                 pCurrentObject->Specific.Directory.DirectoryNodeCount = 0;
1470
1471                                 AFSDbgLogMsg( AFS_SUBSYSTEM_DIR_NODE_COUNT,
1472                                               AFS_TRACE_LEVEL_VERBOSE,
1473                                               "AFSPrimaryVolumeWorkerThread Reset count to 0 on parent FID %08lX-%08lX-%08lX-%08lX\n",
1474                                               pCurrentObject->FileId.Cell,
1475                                               pCurrentObject->FileId.Volume,
1476                                               pCurrentObject->FileId.Vnode,
1477                                               pCurrentObject->FileId.Unique);
1478
1479                                 //
1480                                 // Clear our enumerated flag on this object so we retrieve info again on next access
1481                                 //
1482
1483                                 ClearFlag( pCurrentObject->Flags, AFS_OBJECT_FLAGS_DIRECTORY_ENUMERATED);
1484
1485                                 AFSReleaseResource( pCurrentObject->Specific.Directory.DirectoryNodeHdr.TreeLock);
1486
1487                                 AFSConvertToShared( pVolumeCB->ObjectInfoTree.TreeLock);
1488                             }
1489                             else
1490                             {
1491
1492                                 AFSReleaseResource( pCurrentObject->Specific.Directory.DirectoryNodeHdr.TreeLock);
1493
1494                                 bReleaseVolumeLock = FALSE;
1495
1496                                 break;
1497                             }
1498                         }
1499                         else
1500                         {
1501
1502                             //
1503                             // Try to grab the volume lock again ... no problem if we don't
1504                             //
1505
1506                             if( !AFSAcquireExcl( pVolumeCB->ObjectInfoTree.TreeLock,
1507                                                  FALSE))
1508                             {
1509
1510                                 bReleaseVolumeLock = FALSE;
1511
1512                                 break;
1513                             }
1514                         }
1515
1516                         if( pCurrentObject != &pVolumeCB->ObjectInformation)
1517                         {
1518
1519                             pCurrentObject = (AFSObjectInfoCB *)pCurrentObject->ListEntry.fLink;
1520
1521                             if( pCurrentObject == NULL &&
1522                                 pVolumeCB != AFSGlobalRoot)
1523                             {
1524
1525                                 pCurrentObject = &pVolumeCB->ObjectInformation;
1526                             }
1527                         }
1528                         else
1529                         {
1530
1531                             pCurrentObject = NULL;
1532                         }
1533
1534                         continue;
1535                     }
1536                     else if( pCurrentObject->FileType == AFS_FILE_TYPE_FILE)
1537                     {
1538
1539                         if( BooleanFlagOn( pCurrentObject->Flags, AFS_OBJECT_FLAGS_DELETED) &&
1540                             pCurrentObject->ObjectReferenceCount <= 0 &&
1541                             ( pCurrentObject->Fcb == NULL ||
1542                               pCurrentObject->Fcb->OpenReferenceCount == 0))
1543                         {
1544
1545                             pFcb = (AFSFcb *) InterlockedCompareExchangePointer( (PVOID *)&pCurrentObject->Fcb, NULL, (PVOID)pCurrentObject->Fcb);
1546
1547                             if( pFcb != NULL)
1548                             {
1549
1550                                 AFSReleaseResource( pVolumeCB->ObjectInfoTree.TreeLock);
1551
1552                                 //
1553                                 // Dropping the TreeLock permits the
1554                                 // pCurrentObject->ObjectReferenceCount to change
1555                                 //
1556
1557                                 AFSCleanupFcb( pFcb,
1558                                                TRUE);
1559
1560                                 AFSAcquireExcl( pVolumeCB->ObjectInfoTree.TreeLock,
1561                                                 TRUE);
1562
1563                                 AFSRemoveFcb( &pFcb);
1564                             }
1565
1566                             AFSReleaseResource( pVolumeCB->ObjectInfoTree.TreeLock);
1567
1568                             if( AFSAcquireExcl( pVolumeCB->ObjectInfoTree.TreeLock,
1569                                                 FALSE))
1570                             {
1571
1572                                 AFSDeleteObjectInfo( pCurrentObject);
1573
1574                                 AFSConvertToShared( pVolumeCB->ObjectInfoTree.TreeLock);
1575
1576                                 pCurrentObject = pNextObject;
1577
1578                                 continue;
1579                             }
1580                             else
1581                             {
1582
1583                                 bReleaseVolumeLock = FALSE;
1584
1585                                 break;
1586                             }
1587                         }
1588                         else if( pCurrentObject->Fcb != NULL)
1589                         {
1590
1591                             AFSReleaseResource( pVolumeCB->ObjectInfoTree.TreeLock);
1592
1593                             //
1594                             // Dropping the TreeLock permits the
1595                             // pCurrentObject->ObjectReferenceCount to change
1596                             //
1597
1598                             AFSCleanupFcb( pCurrentObject->Fcb,
1599                                            FALSE);
1600
1601                             AFSAcquireShared( pVolumeCB->ObjectInfoTree.TreeLock,
1602                                               TRUE);
1603                         }
1604                     }
1605
1606                     pCurrentObject = pNextObject;
1607                 }
1608
1609                 if( bReleaseVolumeLock)
1610                 {
1611
1612                     AFSReleaseResource( pVolumeCB->ObjectInfoTree.TreeLock);
1613                 }
1614             }
1615
1616             //
1617             // Next volume cb
1618             //
1619
1620             AFSReleaseResource( pVolumeCB->VolumeLock);
1621
1622             AFSAcquireShared( &pRDRDeviceExt->Specific.RDR.VolumeListLock,
1623                               TRUE);
1624
1625             pVolumeCB = (AFSVolumeCB *)pVolumeCB->ListEntry.fLink;
1626         }
1627
1628         AFSReleaseResource( &pRDRDeviceExt->Specific.RDR.VolumeListLock);
1629
1630     } // worker thread loop
1631
1632     KeCancelTimer( &Timer);
1633
1634     AFSDbgLogMsg( AFS_SUBSYSTEM_CLEANUP_PROCESSING,
1635                   AFS_TRACE_LEVEL_VERBOSE,
1636                   "AFSPrimaryVolumeWorkerThread Exiting\n");
1637
1638     lCount = InterlockedDecrement( &pControlDeviceExt->Specific.Control.VolumeWorkerThreadCount);
1639
1640     if( lCount == 0)
1641     {
1642
1643         KeSetEvent( &pControlDeviceExt->Specific.Control.VolumeWorkerCloseEvent,
1644                     0,
1645                     FALSE);
1646     }
1647
1648     PsTerminateSystemThread( 0);
1649
1650     return;
1651 }
1652
1653 void
1654 AFSVolumeWorkerThread( IN PVOID Context)
1655 {
1656
1657     NTSTATUS ntStatus = STATUS_SUCCESS;
1658     AFSVolumeCB *pVolumeCB = (AFSVolumeCB * )Context;
1659     AFSWorkQueueContext *pPoolContext = (AFSWorkQueueContext *)&pVolumeCB->VolumeWorkerContext;
1660     AFSDeviceExt *pControlDeviceExt = NULL;
1661     AFSDeviceExt *pRDRDeviceExt = NULL;
1662     BOOLEAN exitThread = FALSE;
1663     LARGE_INTEGER DueTime;
1664     LONG TimeOut;
1665     KTIMER Timer;
1666     LONG lCount;
1667
1668     pControlDeviceExt = (AFSDeviceExt *)AFSControlDeviceObject->DeviceExtension;
1669
1670     pRDRDeviceExt = (AFSDeviceExt *)AFSRDRDeviceObject->DeviceExtension;
1671
1672     //
1673     // Initialize the timer for the worker thread
1674     //
1675
1676     DueTime.QuadPart = -(5000);
1677
1678     TimeOut = 5000;
1679
1680     KeInitializeTimerEx( &Timer,
1681                          SynchronizationTimer);
1682
1683     KeSetTimerEx( &Timer,
1684                   DueTime,
1685                   TimeOut,
1686                   NULL);
1687
1688     //
1689     // Indicate that we are initialized and ready
1690     //
1691
1692     KeSetEvent( &pPoolContext->WorkerThreadReady,
1693                 0,
1694                 FALSE);
1695
1696     //
1697     // Indicate we are initialized
1698     //
1699
1700     SetFlag( pPoolContext->State, AFS_WORKER_INITIALIZED);
1701
1702     while( BooleanFlagOn( pPoolContext->State, AFS_WORKER_PROCESS_REQUESTS))
1703     {
1704
1705         ntStatus = KeWaitForSingleObject( &Timer,
1706                                           Executive,
1707                                           KernelMode,
1708                                           FALSE,
1709                                           NULL);
1710
1711         if( !NT_SUCCESS( ntStatus))
1712         {
1713
1714             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
1715                           AFS_TRACE_LEVEL_ERROR,
1716                           "AFSVolumeWorkerThread Wait for queue items failed Status %08lX\n", ntStatus);
1717         }
1718         else
1719         {
1720
1721             //
1722             // If we are in shutdown mode and the dirty flag is clear then get out now
1723             //
1724
1725             if( BooleanFlagOn( pRDRDeviceExt->DeviceFlags, AFS_DEVICE_FLAG_REDIRECTOR_SHUTDOWN))
1726             {
1727
1728                 break;
1729             }
1730         }
1731     } // worker thread loop
1732
1733     KeCancelTimer( &Timer);
1734
1735     lCount = InterlockedDecrement( &pControlDeviceExt->Specific.Control.VolumeWorkerThreadCount);
1736
1737     if( lCount == 0)
1738     {
1739
1740         KeSetEvent( &pControlDeviceExt->Specific.Control.VolumeWorkerCloseEvent,
1741                     0,
1742                     FALSE);
1743     }
1744
1745     PsTerminateSystemThread( 0);
1746
1747     return;
1748 }
1749
1750 NTSTATUS
1751 AFSInsertWorkitem( IN AFSWorkItem *WorkItem)
1752 {
1753
1754     NTSTATUS ntStatus = STATUS_SUCCESS;
1755     AFSDeviceExt *pDevExt = NULL;
1756     LONG lCount;
1757
1758     pDevExt = (AFSDeviceExt *)AFSLibraryDeviceObject->DeviceExtension;
1759
1760     AFSDbgLogMsg( AFS_SUBSYSTEM_LOCK_PROCESSING,
1761                   AFS_TRACE_LEVEL_VERBOSE,
1762                   "AFSInsertWorkitem Acquiring Control QueueLock lock %08lX EXCL %08lX\n",
1763                   &pDevExt->Specific.Library.QueueLock,
1764                   PsGetCurrentThread());
1765
1766     AFSAcquireExcl( &pDevExt->Specific.Library.QueueLock,
1767                     TRUE);
1768
1769     lCount = InterlockedIncrement( &pDevExt->Specific.Library.QueueItemCount);
1770
1771     AFSDbgLogMsg( AFS_SUBSYSTEM_WORKER_PROCESSING,
1772                   AFS_TRACE_LEVEL_VERBOSE,
1773                   "AFSInsertWorkitem Inserting work item %08lX Count %08lX\n",
1774                   WorkItem,
1775                   lCount);
1776
1777     if( pDevExt->Specific.Library.QueueTail != NULL) // queue already has nodes
1778     {
1779
1780         pDevExt->Specific.Library.QueueTail->next = WorkItem;
1781     }
1782     else // first node
1783     {
1784
1785         pDevExt->Specific.Library.QueueHead = WorkItem;
1786     }
1787
1788     WorkItem->next = NULL;
1789     pDevExt->Specific.Library.QueueTail = WorkItem;
1790
1791     // indicate that the queue has nodes
1792     KeSetEvent( &(pDevExt->Specific.Library.WorkerQueueHasItems),
1793                 0,
1794                 FALSE);
1795
1796     AFSReleaseResource( &pDevExt->Specific.Library.QueueLock);
1797
1798     return ntStatus;
1799 }
1800
1801 NTSTATUS
1802 AFSInsertIOWorkitem( IN AFSWorkItem *WorkItem)
1803 {
1804
1805     NTSTATUS ntStatus = STATUS_SUCCESS;
1806     AFSDeviceExt *pDevExt = NULL;
1807     LONG lCount;
1808
1809     pDevExt = (AFSDeviceExt *)AFSLibraryDeviceObject->DeviceExtension;
1810
1811     AFSDbgLogMsg( AFS_SUBSYSTEM_LOCK_PROCESSING,
1812                   AFS_TRACE_LEVEL_VERBOSE,
1813                   "AFSInsertIOWorkitem Acquiring Control QueueLock lock %08lX EXCL %08lX\n",
1814                   &pDevExt->Specific.Library.IOQueueLock,
1815                   PsGetCurrentThread());
1816
1817     AFSAcquireExcl( &pDevExt->Specific.Library.IOQueueLock,
1818                     TRUE);
1819
1820     lCount = InterlockedIncrement( &pDevExt->Specific.Library.IOQueueItemCount);
1821
1822     AFSDbgLogMsg( AFS_SUBSYSTEM_WORKER_PROCESSING,
1823                   AFS_TRACE_LEVEL_VERBOSE,
1824                   "AFSInsertWorkitem Inserting IO work item %08lX Count %08lX\n",
1825                   WorkItem,
1826                   lCount);
1827
1828     if( pDevExt->Specific.Library.IOQueueTail != NULL) // queue already has nodes
1829     {
1830
1831         pDevExt->Specific.Library.IOQueueTail->next = WorkItem;
1832     }
1833     else // first node
1834     {
1835
1836         pDevExt->Specific.Library.IOQueueHead = WorkItem;
1837     }
1838
1839     WorkItem->next = NULL;
1840     pDevExt->Specific.Library.IOQueueTail = WorkItem;
1841
1842     // indicate that the queue has nodes
1843     KeSetEvent( &(pDevExt->Specific.Library.IOWorkerQueueHasItems),
1844                 0,
1845                 FALSE);
1846
1847     AFSReleaseResource( &pDevExt->Specific.Library.IOQueueLock);
1848
1849     return ntStatus;
1850 }
1851
1852 NTSTATUS
1853 AFSInsertWorkitemAtHead( IN AFSWorkItem *WorkItem)
1854 {
1855
1856     NTSTATUS ntStatus = STATUS_SUCCESS;
1857     AFSDeviceExt *pDevExt = NULL;
1858     LONG lCount;
1859
1860     pDevExt = (AFSDeviceExt *)AFSLibraryDeviceObject->DeviceExtension;
1861
1862     AFSDbgLogMsg( AFS_SUBSYSTEM_LOCK_PROCESSING,
1863                   AFS_TRACE_LEVEL_VERBOSE,
1864                   "AFSInsertWorkitemAtHead Acquiring Control QueueLock lock %08lX EXCL %08lX\n",
1865                   &pDevExt->Specific.Library.QueueLock,
1866                   PsGetCurrentThread());
1867
1868     AFSAcquireExcl( &pDevExt->Specific.Library.QueueLock,
1869                     TRUE);
1870
1871     WorkItem->next = pDevExt->Specific.Library.QueueHead;
1872
1873     pDevExt->Specific.Library.QueueHead = WorkItem;
1874
1875     lCount = InterlockedIncrement( &pDevExt->Specific.Library.QueueItemCount);
1876
1877     AFSDbgLogMsg( AFS_SUBSYSTEM_WORKER_PROCESSING,
1878                   AFS_TRACE_LEVEL_VERBOSE,
1879                   "AFSInsertWorkitemAtHead Inserting work item %08lX Count %08lX\n",
1880                   WorkItem,
1881                   lCount);
1882
1883     //
1884     // indicate that the queue has nodes
1885     //
1886
1887     KeSetEvent( &(pDevExt->Specific.Library.WorkerQueueHasItems),
1888                 0,
1889                 FALSE);
1890
1891     AFSReleaseResource( &pDevExt->Specific.Library.QueueLock);
1892
1893     return ntStatus;
1894 }
1895
1896 AFSWorkItem *
1897 AFSRemoveWorkItem()
1898 {
1899
1900     NTSTATUS ntStatus = STATUS_SUCCESS;
1901     AFSWorkItem        *pWorkItem = NULL;
1902     AFSDeviceExt *pDevExt = NULL;
1903     LONG lCount;
1904
1905     pDevExt = (AFSDeviceExt *)AFSLibraryDeviceObject->DeviceExtension;
1906
1907     AFSDbgLogMsg( AFS_SUBSYSTEM_LOCK_PROCESSING,
1908                   AFS_TRACE_LEVEL_VERBOSE,
1909                   "AFSRemoveWorkItem Acquiring Control QueueLock lock %08lX EXCL %08lX\n",
1910                   &pDevExt->Specific.Library.QueueLock,
1911                   PsGetCurrentThread());
1912
1913     AFSAcquireExcl( &pDevExt->Specific.Library.QueueLock,
1914                     TRUE);
1915
1916     if( pDevExt->Specific.Library.QueueHead != NULL) // queue has nodes
1917     {
1918
1919         pWorkItem = pDevExt->Specific.Library.QueueHead;
1920
1921         lCount = InterlockedDecrement( &pDevExt->Specific.Library.QueueItemCount);
1922
1923         AFSDbgLogMsg( AFS_SUBSYSTEM_WORKER_PROCESSING,
1924                       AFS_TRACE_LEVEL_VERBOSE,
1925                       "AFSRemoveWorkItem Removing work item %08lX Count %08lX Thread %08lX\n",
1926                       pWorkItem,
1927                       lCount,
1928                       PsGetCurrentThreadId());
1929
1930         pDevExt->Specific.Library.QueueHead = pDevExt->Specific.Library.QueueHead->next;
1931
1932         if( pDevExt->Specific.Library.QueueHead == NULL) // if queue just became empty
1933         {
1934
1935             pDevExt->Specific.Library.QueueTail = NULL;
1936         }
1937         else
1938         {
1939
1940             //
1941             // Wake up another worker
1942             //
1943
1944             KeSetEvent( &(pDevExt->Specific.Library.WorkerQueueHasItems),
1945                         0,
1946                         FALSE);
1947         }
1948     }
1949
1950     AFSReleaseResource( &pDevExt->Specific.Library.QueueLock);
1951
1952     return pWorkItem;
1953 }
1954
1955 AFSWorkItem *
1956 AFSRemoveIOWorkItem()
1957 {
1958
1959     NTSTATUS ntStatus = STATUS_SUCCESS;
1960     AFSWorkItem        *pWorkItem = NULL;
1961     AFSDeviceExt *pDevExt = NULL;
1962     LONG lCount;
1963
1964     pDevExt = (AFSDeviceExt *)AFSLibraryDeviceObject->DeviceExtension;
1965
1966     AFSDbgLogMsg( AFS_SUBSYSTEM_LOCK_PROCESSING,
1967                   AFS_TRACE_LEVEL_VERBOSE,
1968                   "AFSRemoveIOWorkItem Acquiring Control QueueLock lock %08lX EXCL %08lX\n",
1969                   &pDevExt->Specific.Library.IOQueueLock,
1970                   PsGetCurrentThread());
1971
1972     AFSAcquireExcl( &pDevExt->Specific.Library.IOQueueLock,
1973                     TRUE);
1974
1975     if( pDevExt->Specific.Library.IOQueueHead != NULL) // queue has nodes
1976     {
1977
1978         pWorkItem = pDevExt->Specific.Library.IOQueueHead;
1979
1980         lCount = InterlockedDecrement( &pDevExt->Specific.Library.IOQueueItemCount);
1981
1982         AFSDbgLogMsg( AFS_SUBSYSTEM_WORKER_PROCESSING,
1983                       AFS_TRACE_LEVEL_VERBOSE,
1984                       "AFSRemoveWorkItem Removing work item %08lX Count %08lX Thread %08lX\n",
1985                       pWorkItem,
1986                       lCount,
1987                       PsGetCurrentThreadId());
1988
1989         pDevExt->Specific.Library.IOQueueHead = pDevExt->Specific.Library.IOQueueHead->next;
1990
1991         if( pDevExt->Specific.Library.IOQueueHead == NULL) // if queue just became empty
1992         {
1993
1994             pDevExt->Specific.Library.IOQueueTail = NULL;
1995         }
1996         else
1997         {
1998
1999             //
2000             // Wake up another worker
2001             //
2002
2003             KeSetEvent( &(pDevExt->Specific.Library.IOWorkerQueueHasItems),
2004                         0,
2005                         FALSE);
2006         }
2007     }
2008
2009     AFSReleaseResource( &pDevExt->Specific.Library.IOQueueLock);
2010
2011     return pWorkItem;
2012 }
2013
2014 NTSTATUS
2015 AFSQueueWorkerRequest( IN AFSWorkItem *WorkItem)
2016 {
2017
2018     NTSTATUS ntStatus = STATUS_SUCCESS;
2019     AFSDeviceExt *pDevExt = NULL;
2020     BOOLEAN bWait = BooleanFlagOn( WorkItem->RequestFlags, AFS_SYNCHRONOUS_REQUEST);
2021
2022     //
2023     // Submit the work item to the worker
2024     //
2025
2026     ntStatus = AFSInsertWorkitem( WorkItem);
2027
2028     if( bWait)
2029     {
2030
2031         //
2032         // Sync request so block on the work item event
2033         //
2034
2035         ntStatus = KeWaitForSingleObject( &WorkItem->Event,
2036                                           Executive,
2037                                           KernelMode,
2038                                           FALSE,
2039                                           NULL);
2040     }
2041
2042     return ntStatus;
2043 }
2044
2045 NTSTATUS
2046 AFSQueueIOWorkerRequest( IN AFSWorkItem *WorkItem)
2047 {
2048
2049     NTSTATUS ntStatus = STATUS_SUCCESS;
2050     AFSDeviceExt *pDevExt = NULL;
2051     BOOLEAN bWait = BooleanFlagOn( WorkItem->RequestFlags, AFS_SYNCHRONOUS_REQUEST);
2052
2053     //
2054     // Submit the work item to the worker
2055     //
2056
2057     ntStatus = AFSInsertIOWorkitem( WorkItem);
2058
2059     if( bWait)
2060     {
2061
2062         //
2063         // Sync request so block on the work item event
2064         //
2065
2066         ntStatus = KeWaitForSingleObject( &WorkItem->Event,
2067                                           Executive,
2068                                           KernelMode,
2069                                           FALSE,
2070                                           NULL);
2071     }
2072
2073     return ntStatus;
2074 }
2075
2076 NTSTATUS
2077 AFSQueueWorkerRequestAtHead( IN AFSWorkItem *WorkItem)
2078 {
2079
2080     NTSTATUS ntStatus = STATUS_SUCCESS;
2081     AFSDeviceExt *pDevExt = NULL;
2082     BOOLEAN bWait = BooleanFlagOn( WorkItem->RequestFlags, AFS_SYNCHRONOUS_REQUEST);
2083
2084     //
2085     // Submit the work item to the worker
2086     //
2087
2088     ntStatus = AFSInsertWorkitemAtHead( WorkItem);
2089
2090     if( bWait)
2091     {
2092
2093         //
2094         // Sync request so block on the work item event
2095         //
2096
2097         ntStatus = KeWaitForSingleObject( &WorkItem->Event,
2098                                           Executive,
2099                                           KernelMode,
2100                                           FALSE,
2101                                           NULL);
2102     }
2103
2104     return ntStatus;
2105 }
2106
2107 NTSTATUS
2108 AFSQueueFlushExtents( IN AFSFcb *Fcb,
2109                       IN GUID *AuthGroup)
2110 {
2111
2112     NTSTATUS ntStatus = STATUS_SUCCESS;
2113     AFSDeviceExt *pRDRDeviceExt = (AFSDeviceExt *)AFSRDRDeviceObject->DeviceExtension;
2114     AFSWorkItem *pWorkItem = NULL;
2115     LONG lCount;
2116
2117     __try
2118     {
2119
2120         AFSDbgLogMsg( AFS_SUBSYSTEM_WORKER_PROCESSING,
2121                       AFS_TRACE_LEVEL_VERBOSE,
2122                       "AFSQueueFlushExtents Queuing request for FID %08lX-%08lX-%08lX-%08lX\n",
2123                       Fcb->ObjectInformation->FileId.Cell,
2124                       Fcb->ObjectInformation->FileId.Volume,
2125                       Fcb->ObjectInformation->FileId.Vnode,
2126                       Fcb->ObjectInformation->FileId.Unique);
2127
2128         //
2129         // Increment our flush count here just to keep the number of items in the
2130         // queue down. We'll decrement it just below.
2131         //
2132
2133         lCount = InterlockedIncrement( &Fcb->Specific.File.QueuedFlushCount);
2134
2135         if( lCount > 3)
2136         {
2137
2138             AFSDbgLogMsg( AFS_SUBSYSTEM_WORKER_PROCESSING,
2139                           AFS_TRACE_LEVEL_VERBOSE,
2140                           "AFSQueueFlushExtents Max queued items for FID %08lX-%08lX-%08lX-%08lX\n",
2141                           Fcb->ObjectInformation->FileId.Cell,
2142                           Fcb->ObjectInformation->FileId.Volume,
2143                           Fcb->ObjectInformation->FileId.Vnode,
2144                           Fcb->ObjectInformation->FileId.Unique);
2145
2146             try_return( ntStatus);
2147         }
2148
2149         if( BooleanFlagOn( pRDRDeviceExt->DeviceFlags, AFS_DEVICE_FLAG_REDIRECTOR_SHUTDOWN))
2150         {
2151
2152             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2153                           AFS_TRACE_LEVEL_ERROR,
2154                           "AFSQueueFlushExtents Failing request, in shutdown\n");
2155
2156             try_return( ntStatus = STATUS_TOO_LATE);
2157         }
2158
2159         //
2160         // Allocate our request structure and send it to the worker
2161         //
2162
2163         pWorkItem = (AFSWorkItem *)AFSLibExAllocatePoolWithTag( NonPagedPool,
2164                                                                 sizeof( AFSWorkItem),
2165                                                                 AFS_WORK_ITEM_TAG);
2166
2167         if( pWorkItem == NULL)
2168         {
2169
2170             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2171                           AFS_TRACE_LEVEL_ERROR,
2172                           "AFSQueueFlushExtents Failed to allocate work item\n");
2173
2174             try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
2175         }
2176
2177         RtlZeroMemory( pWorkItem,
2178                        sizeof( AFSWorkItem));
2179
2180         pWorkItem->Size = sizeof( AFSWorkItem);
2181
2182         pWorkItem->ProcessID = (ULONGLONG)PsGetCurrentProcessId();
2183
2184         pWorkItem->RequestType = AFS_WORK_FLUSH_FCB;
2185
2186         RtlCopyMemory( &pWorkItem->AuthGroup,
2187                        AuthGroup,
2188                        sizeof( GUID));
2189
2190         pWorkItem->Specific.Fcb.Fcb = Fcb;
2191
2192         lCount = InterlockedIncrement( &Fcb->OpenReferenceCount);
2193
2194         AFSDbgLogMsg( AFS_SUBSYSTEM_FCB_REF_COUNTING,
2195                       AFS_TRACE_LEVEL_VERBOSE,
2196                       "AFSQueueFlushExtents Increment count on Fcb %08lX Cnt %d\n",
2197                       Fcb,
2198                       lCount);
2199
2200         AFSDbgLogMsg( AFS_SUBSYSTEM_WORKER_PROCESSING,
2201                       AFS_TRACE_LEVEL_VERBOSE,
2202                       "AFSQueueFlushExtents Workitem %08lX for FID %08lX-%08lX-%08lX-%08lX\n",
2203                       pWorkItem,
2204                       Fcb->ObjectInformation->FileId.Cell,
2205                       Fcb->ObjectInformation->FileId.Volume,
2206                       Fcb->ObjectInformation->FileId.Vnode,
2207                       Fcb->ObjectInformation->FileId.Unique);
2208
2209         ntStatus = AFSQueueWorkerRequest( pWorkItem);
2210
2211 try_exit:
2212
2213         AFSDbgLogMsg( AFS_SUBSYSTEM_WORKER_PROCESSING,
2214                       AFS_TRACE_LEVEL_VERBOSE,
2215                       "AFSQueueFlushExtents Request complete Status %08lX FID %08lX-%08lX-%08lX-%08lX\n",
2216                       Fcb->ObjectInformation->FileId.Cell,
2217                       Fcb->ObjectInformation->FileId.Volume,
2218                       Fcb->ObjectInformation->FileId.Vnode,
2219                       Fcb->ObjectInformation->FileId.Unique,
2220                       ntStatus);
2221
2222         //
2223         // Remove the count we added above
2224         //
2225
2226         lCount = InterlockedDecrement( &Fcb->Specific.File.QueuedFlushCount);
2227
2228         if( lCount == 0)
2229         {
2230
2231             KeSetEvent( &Fcb->NPFcb->Specific.File.QueuedFlushEvent,
2232                         0,
2233                         FALSE);
2234         }
2235
2236         if( !NT_SUCCESS( ntStatus))
2237         {
2238
2239             if( pWorkItem != NULL)
2240             {
2241
2242                 lCount = InterlockedDecrement( &Fcb->OpenReferenceCount);
2243
2244                 ExFreePoolWithTag( pWorkItem, AFS_WORK_ITEM_TAG);
2245             }
2246
2247             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2248                           AFS_TRACE_LEVEL_ERROR,
2249                           "AFSQueueFlushExtents Failed to queue request Status %08lX\n", ntStatus);
2250         }
2251     }
2252     __except( AFSExceptionFilter( __FUNCTION__, GetExceptionCode(), GetExceptionInformation()) )
2253     {
2254
2255         AFSDbgLogMsg( 0,
2256                       0,
2257                       "EXCEPTION - AFSQueueFlushExtents\n");
2258
2259         AFSDumpTraceFilesFnc();
2260     }
2261
2262     return ntStatus;
2263 }
2264
2265 NTSTATUS
2266 AFSQueueAsyncRead( IN PDEVICE_OBJECT DeviceObject,
2267                    IN PIRP Irp,
2268                    IN HANDLE CallerProcess)
2269 {
2270
2271     NTSTATUS ntStatus = STATUS_SUCCESS;
2272     AFSWorkItem *pWorkItem = NULL;
2273
2274     __try
2275     {
2276
2277         AFSDbgLogMsg( AFS_SUBSYSTEM_WORKER_PROCESSING,
2278                       AFS_TRACE_LEVEL_VERBOSE,
2279                       "AFSQueueAsyncRead Queuing request for Irp %08lX\n",
2280                       Irp);
2281
2282         pWorkItem = (AFSWorkItem *) AFSLibExAllocatePoolWithTag( NonPagedPool,
2283                                                                  sizeof(AFSWorkItem),
2284                                                                  AFS_WORK_ITEM_TAG);
2285         if (NULL == pWorkItem)
2286         {
2287
2288             AFSDbgLogMsg( AFS_SUBSYSTEM_IO_PROCESSING,
2289                           AFS_TRACE_LEVEL_ERROR,
2290                           "AFSQueueAsyncRead Failed to allocate work item\n");
2291
2292             try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES );
2293         }
2294
2295         RtlZeroMemory( pWorkItem,
2296                        sizeof(AFSWorkItem));
2297
2298         pWorkItem->Size = sizeof( AFSWorkItem);
2299
2300         pWorkItem->RequestType = AFS_WORK_ASYNCH_READ;
2301
2302         pWorkItem->Specific.AsynchIo.Device = DeviceObject;
2303
2304         pWorkItem->Specific.AsynchIo.Irp = Irp;
2305
2306         pWorkItem->Specific.AsynchIo.CallingProcess = CallerProcess;
2307
2308         AFSDbgLogMsg( AFS_SUBSYSTEM_WORKER_PROCESSING,
2309                       AFS_TRACE_LEVEL_VERBOSE,
2310                       "AFSQueueAsyncRead Workitem %08lX for Irp %08lX\n",
2311                       pWorkItem,
2312                       Irp);
2313
2314         ntStatus = AFSQueueWorkerRequest( pWorkItem);
2315
2316 try_exit:
2317
2318         AFSDbgLogMsg( AFS_SUBSYSTEM_WORKER_PROCESSING,
2319                       AFS_TRACE_LEVEL_VERBOSE,
2320                       "AFSQueueAsyncRead Request for Irp %08lX complete Status %08lX\n",
2321                       Irp,
2322                       ntStatus);
2323
2324         if( !NT_SUCCESS( ntStatus))
2325         {
2326
2327             if( pWorkItem != NULL)
2328             {
2329
2330                 ExFreePoolWithTag( pWorkItem, AFS_WORK_ITEM_TAG);
2331             }
2332
2333             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2334                           AFS_TRACE_LEVEL_ERROR,
2335                           "AFSQueueAsyncRead Failed to queue request Status %08lX\n", ntStatus);
2336         }
2337     }
2338     __except( AFSExceptionFilter( __FUNCTION__, GetExceptionCode(), GetExceptionInformation()) )
2339     {
2340
2341         AFSDbgLogMsg( 0,
2342                       0,
2343                       "EXCEPTION - AFSQueueAsyncRead\n");
2344
2345         AFSDumpTraceFilesFnc();
2346     }
2347
2348     return ntStatus;
2349 }
2350
2351 NTSTATUS
2352 AFSQueueAsyncWrite( IN PDEVICE_OBJECT DeviceObject,
2353                     IN PIRP Irp,
2354                     IN HANDLE CallerProcess)
2355 {
2356
2357     NTSTATUS ntStatus = STATUS_SUCCESS;
2358     AFSWorkItem *pWorkItem = NULL;
2359
2360     __try
2361     {
2362
2363         AFSDbgLogMsg( AFS_SUBSYSTEM_WORKER_PROCESSING,
2364                       AFS_TRACE_LEVEL_VERBOSE,
2365                       "AFSQueueAsyncWrite Queuing request for Irp %08lX\n",
2366                       Irp);
2367
2368         pWorkItem = (AFSWorkItem *) AFSLibExAllocatePoolWithTag( NonPagedPool,
2369                                                                  sizeof(AFSWorkItem),
2370                                                                  AFS_WORK_ITEM_TAG);
2371         if (NULL == pWorkItem)
2372         {
2373
2374             AFSDbgLogMsg( AFS_SUBSYSTEM_IO_PROCESSING,
2375                           AFS_TRACE_LEVEL_ERROR,
2376                           "AFSQueueAsyncWrite Failed to allocate work item\n");
2377
2378             try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES );
2379         }
2380
2381         RtlZeroMemory( pWorkItem,
2382                        sizeof(AFSWorkItem));
2383
2384         pWorkItem->Size = sizeof( AFSWorkItem);
2385
2386         pWorkItem->RequestType = AFS_WORK_ASYNCH_WRITE;
2387
2388         pWorkItem->Specific.AsynchIo.Device = DeviceObject;
2389
2390         pWorkItem->Specific.AsynchIo.Irp = Irp;
2391
2392         pWorkItem->Specific.AsynchIo.CallingProcess = CallerProcess;
2393
2394         AFSDbgLogMsg( AFS_SUBSYSTEM_WORKER_PROCESSING,
2395                       AFS_TRACE_LEVEL_VERBOSE,
2396                       "AFSQueueAsyncWrite Workitem %08lX for Irp %08lX\n",
2397                       pWorkItem,
2398                       Irp);
2399
2400         ntStatus = AFSQueueWorkerRequest( pWorkItem);
2401
2402 try_exit:
2403
2404         AFSDbgLogMsg( AFS_SUBSYSTEM_WORKER_PROCESSING,
2405                       AFS_TRACE_LEVEL_VERBOSE,
2406                       "AFSQueueAsyncWrite Request for Irp %08lX complete Status %08lX\n",
2407                       Irp,
2408                       ntStatus);
2409
2410         if( !NT_SUCCESS( ntStatus))
2411         {
2412
2413             if( pWorkItem != NULL)
2414             {
2415
2416                 ExFreePoolWithTag( pWorkItem, AFS_WORK_ITEM_TAG);
2417             }
2418
2419             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2420                           AFS_TRACE_LEVEL_ERROR,
2421                           "AFSQueueAsyncWrite Failed to queue request Status %08lX\n", ntStatus);
2422         }
2423     }
2424     __except( AFSExceptionFilter( __FUNCTION__, GetExceptionCode(), GetExceptionInformation()) )
2425     {
2426
2427         AFSDbgLogMsg( 0,
2428                       0,
2429                       "EXCEPTION - AFSQueueAsyncWrite\n");
2430
2431         AFSDumpTraceFilesFnc();
2432     }
2433
2434     return ntStatus;
2435 }
2436
2437 NTSTATUS
2438 AFSQueueGlobalRootEnumeration()
2439 {
2440
2441     NTSTATUS ntStatus = STATUS_SUCCESS;
2442     AFSWorkItem *pWorkItem = NULL;
2443
2444     __try
2445     {
2446
2447         pWorkItem = (AFSWorkItem *) AFSLibExAllocatePoolWithTag( NonPagedPool,
2448                                                                  sizeof(AFSWorkItem),
2449                                                                  AFS_WORK_ITEM_TAG);
2450         if (NULL == pWorkItem)
2451         {
2452
2453             AFSDbgLogMsg( AFS_SUBSYSTEM_IO_PROCESSING,
2454                           AFS_TRACE_LEVEL_ERROR,
2455                           "AFSQueueGlobalRootEnumeration Failed to allocate work item\n");
2456
2457             try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES );
2458         }
2459
2460         RtlZeroMemory( pWorkItem,
2461                        sizeof(AFSWorkItem));
2462
2463         pWorkItem->Size = sizeof( AFSWorkItem);
2464
2465         pWorkItem->RequestType = AFS_WORK_ENUMERATE_GLOBAL_ROOT;
2466
2467         AFSDbgLogMsg( AFS_SUBSYSTEM_WORKER_PROCESSING,
2468                       AFS_TRACE_LEVEL_VERBOSE,
2469                       "AFSQueueGlobalRootEnumeration Workitem %08lX\n",
2470                       pWorkItem);
2471
2472         ntStatus = AFSQueueWorkerRequest( pWorkItem);
2473
2474 try_exit:
2475
2476         AFSDbgLogMsg( AFS_SUBSYSTEM_WORKER_PROCESSING,
2477                       AFS_TRACE_LEVEL_VERBOSE,
2478                       "AFSQueueGlobalRootEnumeration Request complete Status %08lX\n",
2479                       ntStatus);
2480
2481         if( !NT_SUCCESS( ntStatus))
2482         {
2483
2484             if( pWorkItem != NULL)
2485             {
2486
2487                 ExFreePoolWithTag( pWorkItem, AFS_WORK_ITEM_TAG);
2488             }
2489
2490             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2491                           AFS_TRACE_LEVEL_ERROR,
2492                           "AFSQueueGlobalRootEnumeration Failed to queue request Status %08lX\n",
2493                           ntStatus);
2494         }
2495     }
2496     __except( AFSExceptionFilter( __FUNCTION__, GetExceptionCode(), GetExceptionInformation()) )
2497     {
2498
2499         AFSDbgLogMsg( 0,
2500                       0,
2501                       "EXCEPTION - AFSQueueGlobalRootEnumeration\n");
2502
2503         AFSDumpTraceFilesFnc();
2504     }
2505
2506     return ntStatus;
2507 }
2508
2509 NTSTATUS
2510 AFSQueueStartIos( IN PFILE_OBJECT CacheFileObject,
2511                   IN UCHAR FunctionCode,
2512                   IN ULONG RequestFlags,
2513                   IN AFSIoRun *IoRuns,
2514                   IN ULONG RunCount,
2515                   IN AFSGatherIo *GatherIo)
2516 {
2517
2518     NTSTATUS ntStatus = STATUS_SUCCESS;
2519     AFSDeviceExt *pRDRDeviceExt = (AFSDeviceExt *)AFSRDRDeviceObject->DeviceExtension;
2520     AFSWorkItem *pWorkItem = NULL;
2521
2522     __try
2523     {
2524
2525         if( BooleanFlagOn( pRDRDeviceExt->DeviceFlags, AFS_DEVICE_FLAG_REDIRECTOR_SHUTDOWN))
2526         {
2527
2528             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2529                           AFS_TRACE_LEVEL_ERROR,
2530                           "AFSQueueStartIos Failing request, in shutdown\n");
2531
2532             try_return( ntStatus = STATUS_TOO_LATE);
2533         }
2534
2535         //
2536         // Allocate our request structure and send it to the worker
2537         //
2538
2539         pWorkItem = (AFSWorkItem *)AFSLibExAllocatePoolWithTag( NonPagedPool,
2540                                                                 sizeof( AFSWorkItem),
2541                                                                 AFS_WORK_ITEM_TAG);
2542
2543         if( pWorkItem == NULL)
2544         {
2545
2546             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2547                           AFS_TRACE_LEVEL_ERROR,
2548                           "AFSQueueStartIos Failed to allocate work item\n");
2549
2550             try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
2551         }
2552
2553         RtlZeroMemory( pWorkItem,
2554                        sizeof( AFSWorkItem));
2555
2556         KeInitializeEvent( &pWorkItem->Event,
2557                            NotificationEvent,
2558                            FALSE);
2559
2560         pWorkItem->Size = sizeof( AFSWorkItem);
2561
2562         pWorkItem->ProcessID = (ULONGLONG)PsGetCurrentProcessId();
2563
2564         pWorkItem->RequestType = AFS_WORK_START_IOS;
2565
2566         pWorkItem->Specific.CacheAccess.CacheFileObject = CacheFileObject;
2567
2568         pWorkItem->Specific.CacheAccess.FunctionCode = FunctionCode;
2569
2570         pWorkItem->Specific.CacheAccess.RequestFlags = RequestFlags;
2571
2572         pWorkItem->Specific.CacheAccess.IoRuns = IoRuns;
2573
2574         pWorkItem->Specific.CacheAccess.RunCount = RunCount;
2575
2576         pWorkItem->Specific.CacheAccess.GatherIo = GatherIo;
2577
2578         AFSDbgLogMsg( AFS_SUBSYSTEM_WORKER_PROCESSING,
2579                       AFS_TRACE_LEVEL_VERBOSE,
2580                       "AFSQueueStartIos Queuing IO Workitem %08lX\n",
2581                       pWorkItem);
2582
2583         ntStatus = AFSQueueIOWorkerRequest( pWorkItem);
2584
2585 try_exit:
2586
2587         AFSDbgLogMsg( AFS_SUBSYSTEM_WORKER_PROCESSING,
2588                       AFS_TRACE_LEVEL_VERBOSE,
2589                       "AFSQueueStartIos Request complete Status %08lX\n",
2590                       ntStatus);
2591
2592         if( !NT_SUCCESS( ntStatus))
2593         {
2594
2595             if( pWorkItem != NULL)
2596             {
2597
2598                 ExFreePoolWithTag( pWorkItem, AFS_WORK_ITEM_TAG);
2599             }
2600         }
2601     }
2602     __except( AFSExceptionFilter( __FUNCTION__, GetExceptionCode(), GetExceptionInformation()) )
2603     {
2604
2605         AFSDbgLogMsg( 0,
2606                       0,
2607                       "EXCEPTION - AFSQueueStartIos\n");
2608
2609         AFSDumpTraceFilesFnc();
2610     }
2611
2612     return ntStatus;
2613 }
2614
2615 NTSTATUS
2616 AFSQueueInvalidateObject( IN AFSObjectInfoCB *ObjectInfo,
2617                           IN ULONG InvalidateReason)
2618 {
2619
2620     NTSTATUS ntStatus = STATUS_SUCCESS;
2621     AFSWorkItem *pWorkItem = NULL;
2622
2623     __try
2624     {
2625
2626         pWorkItem = (AFSWorkItem *) AFSLibExAllocatePoolWithTag( NonPagedPool,
2627                                                                  sizeof(AFSWorkItem),
2628                                                                  AFS_WORK_ITEM_TAG);
2629         if (NULL == pWorkItem)
2630         {
2631
2632             AFSDbgLogMsg( AFS_SUBSYSTEM_IO_PROCESSING,
2633                           AFS_TRACE_LEVEL_ERROR,
2634                           "AFSQueueInvalidateObject Failed to allocate work item\n");
2635
2636             try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES );
2637         }
2638
2639         RtlZeroMemory( pWorkItem,
2640                        sizeof(AFSWorkItem));
2641
2642         pWorkItem->Size = sizeof( AFSWorkItem);
2643
2644         pWorkItem->RequestType = AFS_WORK_INVALIDATE_OBJECT;
2645
2646         pWorkItem->Specific.Invalidate.ObjectInfo = ObjectInfo;
2647
2648         pWorkItem->Specific.Invalidate.InvalidateReason = InvalidateReason;
2649
2650         AFSDbgLogMsg( AFS_SUBSYSTEM_WORKER_PROCESSING,
2651                       AFS_TRACE_LEVEL_VERBOSE,
2652                       "AFSQueueInvalidateObject Workitem %08lX\n",
2653                       pWorkItem);
2654
2655         ntStatus = AFSQueueWorkerRequest( pWorkItem);
2656
2657 try_exit:
2658
2659         AFSDbgLogMsg( AFS_SUBSYSTEM_WORKER_PROCESSING,
2660                       AFS_TRACE_LEVEL_VERBOSE,
2661                       "AFSQueueInvalidateObject Request complete Status %08lX\n",
2662                       ntStatus);
2663
2664         if( !NT_SUCCESS( ntStatus))
2665         {
2666
2667             if( pWorkItem != NULL)
2668             {
2669                 ExFreePoolWithTag( pWorkItem, AFS_WORK_ITEM_TAG);
2670             }
2671
2672             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2673                           AFS_TRACE_LEVEL_ERROR,
2674                           "AFSQueueInvalidateObject Failed to queue request Status %08lX\n",
2675                           ntStatus);
2676         }
2677     }
2678     __except( AFSExceptionFilter( __FUNCTION__, GetExceptionCode(), GetExceptionInformation()) )
2679     {
2680
2681         AFSDbgLogMsg( 0,
2682                       0,
2683                       "EXCEPTION - AFSQueueInvalidateObject\n");
2684
2685         AFSDumpTraceFilesFnc();
2686     }
2687
2688     return ntStatus;
2689 }