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  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  *
  10  * - Redistributions of source code must retain the above copyright notice,
  11  *   this list of conditions and the following disclaimer.
  12  * - Redistributions in binary form must reproduce the above copyright
  13  *   notice,
  14  *   this list of conditions and the following disclaimer in the
  15  *   documentation
  16  *   and/or other materials provided with the distribution.
  17  * - Neither the names of Kernel Drivers, LLC and Your File System, Inc.
  18  *   nor the names of their contributors may be used to endorse or promote
  19  *   products derived from this software without specific prior written
  20  *   permission from Kernel Drivers, LLC and Your File System, Inc.
  21  *
  22  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  23  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  24  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
  25  * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
  26  * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  27  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  28  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  29  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
  30  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
  31  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  32  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  33  */
  34
  35 //
  36 // File: 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                                         pCurrentChildObject->Fcb != NULL &&
1392                                         pCurrentChildObject->FileType == AFS_FILE_TYPE_FILE)
1393                                     {
1394
1395                                         //
1396                                         // We must not hold pVolumeCB->ObjectInfoTree.TreeLock exclusive
1397                                         // across an AFSCleanupFcb call since it can deadlock with an
1398                                         // invalidation call from the service.
1399                                         //
1400
1401                                         AFSReleaseResource( pVolumeCB->ObjectInfoTree.TreeLock);
1402
1403                                         //
1404                                         // Dropping the TreeLock permits the
1405                                         // pCurrentObject->ObjectReferenceCount to change
1406                                         //
1407
1408                                         AFSCleanupFcb( pCurrentChildObject->Fcb,
1409                                                        TRUE);
1410
1411                                         AFSAcquireExcl( pVolumeCB->ObjectInfoTree.TreeLock,
1412                                                         TRUE);
1413                                     }
1414
1415                                     if( pCurrentChildObject->ObjectReferenceCount <= 0 &&
1416                                         ( pCurrentChildObject->Fcb == NULL ||
1417                                           pCurrentChildObject->Fcb->OpenReferenceCount == 0 &&
1418                                           pCurrentChildObject->Fcb->Specific.File.ExtentCount == 0))
1419                                     {
1420
1421                                         if( pCurrentChildObject->Fcb != NULL)
1422                                         {
1423
1424                                             AFSRemoveFcb( &pCurrentChildObject->Fcb);
1425                                         }
1426
1427                                         if( pCurrentChildObject->FileType == AFS_FILE_TYPE_DIRECTORY &&
1428                                             pCurrentChildObject->Specific.Directory.PIOCtlDirectoryCB != NULL)
1429                                         {
1430
1431                                             if( pCurrentChildObject->Specific.Directory.PIOCtlDirectoryCB->ObjectInformation->Fcb != NULL)
1432                                             {
1433
1434                                                 AFSRemoveFcb( &pCurrentChildObject->Specific.Directory.PIOCtlDirectoryCB->ObjectInformation->Fcb);
1435                                             }
1436
1437                                             AFSDeleteObjectInfo( pCurrentChildObject->Specific.Directory.PIOCtlDirectoryCB->ObjectInformation);
1438
1439                                             ExDeleteResourceLite( &pCurrentChildObject->Specific.Directory.PIOCtlDirectoryCB->NonPaged->Lock);
1440
1441                                             AFSExFreePool( pCurrentChildObject->Specific.Directory.PIOCtlDirectoryCB->NonPaged);
1442
1443                                             AFSExFreePool( pCurrentChildObject->Specific.Directory.PIOCtlDirectoryCB);
1444                                         }
1445
1446                                         AFSDbgLogMsg( AFS_SUBSYSTEM_CLEANUP_PROCESSING,
1447                                                       AFS_TRACE_LEVEL_VERBOSE,
1448                                                       "AFSPrimaryVolumeWorkerThread Deleting object %08lX\n",
1449                                                       pCurrentChildObject);
1450
1451                                         AFSDeleteObjectInfo( pCurrentChildObject);
1452                                     }
1453
1454                                     pCurrentDirEntry = pNextDirEntry;
1455
1456                                 }
1457
1458                                 pCurrentObject->Specific.Directory.DirectoryNodeListHead = NULL;
1459
1460                                 pCurrentObject->Specific.Directory.DirectoryNodeListTail = NULL;
1461
1462                                 pCurrentObject->Specific.Directory.ShortNameTree = NULL;
1463
1464                                 pCurrentObject->Specific.Directory.DirectoryNodeHdr.CaseSensitiveTreeHead = NULL;
1465
1466                                 pCurrentObject->Specific.Directory.DirectoryNodeHdr.CaseInsensitiveTreeHead = NULL;
1467
1468                                 pCurrentObject->Specific.Directory.DirectoryNodeCount = 0;
1469
1470                                 AFSDbgLogMsg( AFS_SUBSYSTEM_DIR_NODE_COUNT,
1471                                               AFS_TRACE_LEVEL_VERBOSE,
1472                                               "AFSPrimaryVolumeWorkerThread Reset count to 0 on parent FID %08lX-%08lX-%08lX-%08lX\n",
1473                                               pCurrentObject->FileId.Cell,
1474                                               pCurrentObject->FileId.Volume,
1475                                               pCurrentObject->FileId.Vnode,
1476                                               pCurrentObject->FileId.Unique);
1477
1478                                 //
1479                                 // Clear our enumerated flag on this object so we retrieve info again on next access
1480                                 //
1481
1482                                 ClearFlag( pCurrentObject->Flags, AFS_OBJECT_FLAGS_DIRECTORY_ENUMERATED);
1483
1484                                 AFSReleaseResource( pCurrentObject->Specific.Directory.DirectoryNodeHdr.TreeLock);
1485
1486                                 AFSConvertToShared( pVolumeCB->ObjectInfoTree.TreeLock);
1487                             }
1488                             else
1489                             {
1490
1491                                 AFSReleaseResource( pCurrentObject->Specific.Directory.DirectoryNodeHdr.TreeLock);
1492
1493                                 bReleaseVolumeLock = FALSE;
1494
1495                                 break;
1496                             }
1497                         }
1498                         else
1499                         {
1500
1501                             //
1502                             // Try to grab the volume lock again ... no problem if we don't
1503                             //
1504
1505                             if( !AFSAcquireExcl( pVolumeCB->ObjectInfoTree.TreeLock,
1506                                                  FALSE))
1507                             {
1508
1509                                 bReleaseVolumeLock = FALSE;
1510
1511                                 break;
1512                             }
1513                         }
1514
1515                         if( pCurrentObject != &pVolumeCB->ObjectInformation)
1516                         {
1517
1518                             pCurrentObject = (AFSObjectInfoCB *)pCurrentObject->ListEntry.fLink;
1519
1520                             if( pCurrentObject == NULL &&
1521                                 pVolumeCB != AFSGlobalRoot)
1522                             {
1523
1524                                 pCurrentObject = &pVolumeCB->ObjectInformation;
1525                             }
1526                         }
1527                         else
1528                         {
1529
1530                             pCurrentObject = NULL;
1531                         }
1532
1533                         continue;
1534                     }
1535                     else if( pCurrentObject->FileType == AFS_FILE_TYPE_FILE)
1536                     {
1537
1538                         AFSReleaseResource( pVolumeCB->ObjectInfoTree.TreeLock);
1539
1540                         if( pCurrentObject->Fcb != NULL)
1541                         {
1542
1543                             //
1544                             // Dropping the TreeLock permits the
1545                             // pCurrentObject->ObjectReferenceCount to change
1546                             //
1547
1548                             AFSCleanupFcb( pCurrentObject->Fcb,
1549                                            TRUE);
1550                         }
1551
1552                         if( !AFSAcquireExcl( pVolumeCB->ObjectInfoTree.TreeLock,
1553                                              FALSE))
1554                         {
1555
1556                             bReleaseVolumeLock = FALSE;
1557
1558                             break;
1559                         }
1560
1561                         if( BooleanFlagOn( pCurrentObject->Flags, AFS_OBJECT_FLAGS_DELETED) &&
1562                             pCurrentObject->ObjectReferenceCount <= 0 &&
1563                             ( pCurrentObject->Fcb == NULL ||
1564                               pCurrentObject->Fcb->OpenReferenceCount == 0 &&
1565                               pCurrentObject->Fcb->Specific.File.ExtentCount == 0))
1566                         {
1567
1568                             if( pCurrentObject->Fcb != NULL)
1569                             {
1570
1571                                 AFSRemoveFcb( &pCurrentObject->Fcb);
1572                             }
1573
1574                             AFSDeleteObjectInfo( pCurrentObject);
1575                         }
1576
1577                         AFSConvertToShared( pVolumeCB->ObjectInfoTree.TreeLock);
1578
1579                         pCurrentObject = pNextObject;
1580
1581                         continue;
1582                     }
1583
1584                     pCurrentObject = pNextObject;
1585                 }
1586
1587                 if( bReleaseVolumeLock)
1588                 {
1589
1590                     AFSReleaseResource( pVolumeCB->ObjectInfoTree.TreeLock);
1591                 }
1592             }
1593
1594             //
1595             // Next volume cb
1596             //
1597
1598             AFSReleaseResource( pVolumeCB->VolumeLock);
1599
1600             AFSAcquireShared( &pRDRDeviceExt->Specific.RDR.VolumeListLock,
1601                               TRUE);
1602
1603             pVolumeCB = (AFSVolumeCB *)pVolumeCB->ListEntry.fLink;
1604         }
1605
1606         AFSReleaseResource( &pRDRDeviceExt->Specific.RDR.VolumeListLock);
1607
1608     } // worker thread loop
1609
1610     KeCancelTimer( &Timer);
1611
1612     AFSDbgLogMsg( AFS_SUBSYSTEM_CLEANUP_PROCESSING,
1613                   AFS_TRACE_LEVEL_VERBOSE,
1614                   "AFSPrimaryVolumeWorkerThread Exiting\n");
1615
1616     lCount = InterlockedDecrement( &pControlDeviceExt->Specific.Control.VolumeWorkerThreadCount);
1617
1618     if( lCount == 0)
1619     {
1620
1621         KeSetEvent( &pControlDeviceExt->Specific.Control.VolumeWorkerCloseEvent,
1622                     0,
1623                     FALSE);
1624     }
1625
1626     PsTerminateSystemThread( 0);
1627
1628     return;
1629 }
1630
1631 void
1632 AFSVolumeWorkerThread( IN PVOID Context)
1633 {
1634
1635     NTSTATUS ntStatus = STATUS_SUCCESS;
1636     AFSVolumeCB *pVolumeCB = (AFSVolumeCB * )Context;
1637     AFSWorkQueueContext *pPoolContext = (AFSWorkQueueContext *)&pVolumeCB->VolumeWorkerContext;
1638     AFSDeviceExt *pControlDeviceExt = NULL;
1639     AFSDeviceExt *pRDRDeviceExt = NULL;
1640     BOOLEAN exitThread = FALSE;
1641     LARGE_INTEGER DueTime;
1642     LONG TimeOut;
1643     KTIMER Timer;
1644     LONG lCount;
1645
1646     pControlDeviceExt = (AFSDeviceExt *)AFSControlDeviceObject->DeviceExtension;
1647
1648     pRDRDeviceExt = (AFSDeviceExt *)AFSRDRDeviceObject->DeviceExtension;
1649
1650     //
1651     // Initialize the timer for the worker thread
1652     //
1653
1654     DueTime.QuadPart = -(5000);
1655
1656     TimeOut = 5000;
1657
1658     KeInitializeTimerEx( &Timer,
1659                          SynchronizationTimer);
1660
1661     KeSetTimerEx( &Timer,
1662                   DueTime,
1663                   TimeOut,
1664                   NULL);
1665
1666     //
1667     // Indicate that we are initialized and ready
1668     //
1669
1670     KeSetEvent( &pPoolContext->WorkerThreadReady,
1671                 0,
1672                 FALSE);
1673
1674     //
1675     // Indicate we are initialized
1676     //
1677
1678     SetFlag( pPoolContext->State, AFS_WORKER_INITIALIZED);
1679
1680     while( BooleanFlagOn( pPoolContext->State, AFS_WORKER_PROCESS_REQUESTS))
1681     {
1682
1683         ntStatus = KeWaitForSingleObject( &Timer,
1684                                           Executive,
1685                                           KernelMode,
1686                                           FALSE,
1687                                           NULL);
1688
1689         if( !NT_SUCCESS( ntStatus))
1690         {
1691
1692             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
1693                           AFS_TRACE_LEVEL_ERROR,
1694                           "AFSVolumeWorkerThread Wait for queue items failed Status %08lX\n", ntStatus);
1695         }
1696         else
1697         {
1698
1699             //
1700             // If we are in shutdown mode and the dirty flag is clear then get out now
1701             //
1702
1703             if( BooleanFlagOn( pRDRDeviceExt->DeviceFlags, AFS_DEVICE_FLAG_REDIRECTOR_SHUTDOWN))
1704             {
1705
1706                 break;
1707             }
1708         }
1709     } // worker thread loop
1710
1711     KeCancelTimer( &Timer);
1712
1713     lCount = InterlockedDecrement( &pControlDeviceExt->Specific.Control.VolumeWorkerThreadCount);
1714
1715     if( lCount == 0)
1716     {
1717
1718         KeSetEvent( &pControlDeviceExt->Specific.Control.VolumeWorkerCloseEvent,
1719                     0,
1720                     FALSE);
1721     }
1722
1723     PsTerminateSystemThread( 0);
1724
1725     return;
1726 }
1727
1728 NTSTATUS
1729 AFSInsertWorkitem( IN AFSWorkItem *WorkItem)
1730 {
1731
1732     NTSTATUS ntStatus = STATUS_SUCCESS;
1733     AFSDeviceExt *pDevExt = NULL;
1734     LONG lCount;
1735
1736     pDevExt = (AFSDeviceExt *)AFSLibraryDeviceObject->DeviceExtension;
1737
1738     AFSDbgLogMsg( AFS_SUBSYSTEM_LOCK_PROCESSING,
1739                   AFS_TRACE_LEVEL_VERBOSE,
1740                   "AFSInsertWorkitem Acquiring Control QueueLock lock %08lX EXCL %08lX\n",
1741                   &pDevExt->Specific.Library.QueueLock,
1742                   PsGetCurrentThread());
1743
1744     AFSAcquireExcl( &pDevExt->Specific.Library.QueueLock,
1745                     TRUE);
1746
1747     lCount = InterlockedIncrement( &pDevExt->Specific.Library.QueueItemCount);
1748
1749     AFSDbgLogMsg( AFS_SUBSYSTEM_WORKER_PROCESSING,
1750                   AFS_TRACE_LEVEL_VERBOSE,
1751                   "AFSInsertWorkitem Inserting work item %08lX Count %08lX\n",
1752                   WorkItem,
1753                   lCount);
1754
1755     if( pDevExt->Specific.Library.QueueTail != NULL) // queue already has nodes
1756     {
1757
1758         pDevExt->Specific.Library.QueueTail->next = WorkItem;
1759     }
1760     else // first node
1761     {
1762
1763         pDevExt->Specific.Library.QueueHead = WorkItem;
1764     }
1765
1766     WorkItem->next = NULL;
1767     pDevExt->Specific.Library.QueueTail = WorkItem;
1768
1769     // indicate that the queue has nodes
1770     KeSetEvent( &(pDevExt->Specific.Library.WorkerQueueHasItems),
1771                 0,
1772                 FALSE);
1773
1774     AFSReleaseResource( &pDevExt->Specific.Library.QueueLock);
1775
1776     return ntStatus;
1777 }
1778
1779 NTSTATUS
1780 AFSInsertIOWorkitem( IN AFSWorkItem *WorkItem)
1781 {
1782
1783     NTSTATUS ntStatus = STATUS_SUCCESS;
1784     AFSDeviceExt *pDevExt = NULL;
1785     LONG lCount;
1786
1787     pDevExt = (AFSDeviceExt *)AFSLibraryDeviceObject->DeviceExtension;
1788
1789     AFSDbgLogMsg( AFS_SUBSYSTEM_LOCK_PROCESSING,
1790                   AFS_TRACE_LEVEL_VERBOSE,
1791                   "AFSInsertIOWorkitem Acquiring Control QueueLock lock %08lX EXCL %08lX\n",
1792                   &pDevExt->Specific.Library.IOQueueLock,
1793                   PsGetCurrentThread());
1794
1795     AFSAcquireExcl( &pDevExt->Specific.Library.IOQueueLock,
1796                     TRUE);
1797
1798     lCount = InterlockedIncrement( &pDevExt->Specific.Library.IOQueueItemCount);
1799
1800     AFSDbgLogMsg( AFS_SUBSYSTEM_WORKER_PROCESSING,
1801                   AFS_TRACE_LEVEL_VERBOSE,
1802                   "AFSInsertWorkitem Inserting IO work item %08lX Count %08lX\n",
1803                   WorkItem,
1804                   lCount);
1805
1806     if( pDevExt->Specific.Library.IOQueueTail != NULL) // queue already has nodes
1807     {
1808
1809         pDevExt->Specific.Library.IOQueueTail->next = WorkItem;
1810     }
1811     else // first node
1812     {
1813
1814         pDevExt->Specific.Library.IOQueueHead = WorkItem;
1815     }
1816
1817     WorkItem->next = NULL;
1818     pDevExt->Specific.Library.IOQueueTail = WorkItem;
1819
1820     // indicate that the queue has nodes
1821     KeSetEvent( &(pDevExt->Specific.Library.IOWorkerQueueHasItems),
1822                 0,
1823                 FALSE);
1824
1825     AFSReleaseResource( &pDevExt->Specific.Library.IOQueueLock);
1826
1827     return ntStatus;
1828 }
1829
1830 NTSTATUS
1831 AFSInsertWorkitemAtHead( IN AFSWorkItem *WorkItem)
1832 {
1833
1834     NTSTATUS ntStatus = STATUS_SUCCESS;
1835     AFSDeviceExt *pDevExt = NULL;
1836     LONG lCount;
1837
1838     pDevExt = (AFSDeviceExt *)AFSLibraryDeviceObject->DeviceExtension;
1839
1840     AFSDbgLogMsg( AFS_SUBSYSTEM_LOCK_PROCESSING,
1841                   AFS_TRACE_LEVEL_VERBOSE,
1842                   "AFSInsertWorkitemAtHead Acquiring Control QueueLock lock %08lX EXCL %08lX\n",
1843                   &pDevExt->Specific.Library.QueueLock,
1844                   PsGetCurrentThread());
1845
1846     AFSAcquireExcl( &pDevExt->Specific.Library.QueueLock,
1847                     TRUE);
1848
1849     WorkItem->next = pDevExt->Specific.Library.QueueHead;
1850
1851     pDevExt->Specific.Library.QueueHead = WorkItem;
1852
1853     lCount = InterlockedIncrement( &pDevExt->Specific.Library.QueueItemCount);
1854
1855     AFSDbgLogMsg( AFS_SUBSYSTEM_WORKER_PROCESSING,
1856                   AFS_TRACE_LEVEL_VERBOSE,
1857                   "AFSInsertWorkitemAtHead Inserting work item %08lX Count %08lX\n",
1858                   WorkItem,
1859                   lCount);
1860
1861     //
1862     // indicate that the queue has nodes
1863     //
1864
1865     KeSetEvent( &(pDevExt->Specific.Library.WorkerQueueHasItems),
1866                 0,
1867                 FALSE);
1868
1869     AFSReleaseResource( &pDevExt->Specific.Library.QueueLock);
1870
1871     return ntStatus;
1872 }
1873
1874 AFSWorkItem *
1875 AFSRemoveWorkItem()
1876 {
1877
1878     NTSTATUS ntStatus = STATUS_SUCCESS;
1879     AFSWorkItem        *pWorkItem = NULL;
1880     AFSDeviceExt *pDevExt = NULL;
1881     LONG lCount;
1882
1883     pDevExt = (AFSDeviceExt *)AFSLibraryDeviceObject->DeviceExtension;
1884
1885     AFSDbgLogMsg( AFS_SUBSYSTEM_LOCK_PROCESSING,
1886                   AFS_TRACE_LEVEL_VERBOSE,
1887                   "AFSRemoveWorkItem Acquiring Control QueueLock lock %08lX EXCL %08lX\n",
1888                   &pDevExt->Specific.Library.QueueLock,
1889                   PsGetCurrentThread());
1890
1891     AFSAcquireExcl( &pDevExt->Specific.Library.QueueLock,
1892                     TRUE);
1893
1894     if( pDevExt->Specific.Library.QueueHead != NULL) // queue has nodes
1895     {
1896
1897         pWorkItem = pDevExt->Specific.Library.QueueHead;
1898
1899         lCount = InterlockedDecrement( &pDevExt->Specific.Library.QueueItemCount);
1900
1901         AFSDbgLogMsg( AFS_SUBSYSTEM_WORKER_PROCESSING,
1902                       AFS_TRACE_LEVEL_VERBOSE,
1903                       "AFSRemoveWorkItem Removing work item %08lX Count %08lX Thread %08lX\n",
1904                       pWorkItem,
1905                       lCount,
1906                       PsGetCurrentThreadId());
1907
1908         pDevExt->Specific.Library.QueueHead = pDevExt->Specific.Library.QueueHead->next;
1909
1910         if( pDevExt->Specific.Library.QueueHead == NULL) // if queue just became empty
1911         {
1912
1913             pDevExt->Specific.Library.QueueTail = NULL;
1914         }
1915         else
1916         {
1917
1918             //
1919             // Wake up another worker
1920             //
1921
1922             KeSetEvent( &(pDevExt->Specific.Library.WorkerQueueHasItems),
1923                         0,
1924                         FALSE);
1925         }
1926     }
1927
1928     AFSReleaseResource( &pDevExt->Specific.Library.QueueLock);
1929
1930     return pWorkItem;
1931 }
1932
1933 AFSWorkItem *
1934 AFSRemoveIOWorkItem()
1935 {
1936
1937     NTSTATUS ntStatus = STATUS_SUCCESS;
1938     AFSWorkItem        *pWorkItem = NULL;
1939     AFSDeviceExt *pDevExt = NULL;
1940     LONG lCount;
1941
1942     pDevExt = (AFSDeviceExt *)AFSLibraryDeviceObject->DeviceExtension;
1943
1944     AFSDbgLogMsg( AFS_SUBSYSTEM_LOCK_PROCESSING,
1945                   AFS_TRACE_LEVEL_VERBOSE,
1946                   "AFSRemoveIOWorkItem Acquiring Control QueueLock lock %08lX EXCL %08lX\n",
1947                   &pDevExt->Specific.Library.IOQueueLock,
1948                   PsGetCurrentThread());
1949
1950     AFSAcquireExcl( &pDevExt->Specific.Library.IOQueueLock,
1951                     TRUE);
1952
1953     if( pDevExt->Specific.Library.IOQueueHead != NULL) // queue has nodes
1954     {
1955
1956         pWorkItem = pDevExt->Specific.Library.IOQueueHead;
1957
1958         lCount = InterlockedDecrement( &pDevExt->Specific.Library.IOQueueItemCount);
1959
1960         AFSDbgLogMsg( AFS_SUBSYSTEM_WORKER_PROCESSING,
1961                       AFS_TRACE_LEVEL_VERBOSE,
1962                       "AFSRemoveWorkItem Removing work item %08lX Count %08lX Thread %08lX\n",
1963                       pWorkItem,
1964                       lCount,
1965                       PsGetCurrentThreadId());
1966
1967         pDevExt->Specific.Library.IOQueueHead = pDevExt->Specific.Library.IOQueueHead->next;
1968
1969         if( pDevExt->Specific.Library.IOQueueHead == NULL) // if queue just became empty
1970         {
1971
1972             pDevExt->Specific.Library.IOQueueTail = NULL;
1973         }
1974         else
1975         {
1976
1977             //
1978             // Wake up another worker
1979             //
1980
1981             KeSetEvent( &(pDevExt->Specific.Library.IOWorkerQueueHasItems),
1982                         0,
1983                         FALSE);
1984         }
1985     }
1986
1987     AFSReleaseResource( &pDevExt->Specific.Library.IOQueueLock);
1988
1989     return pWorkItem;
1990 }
1991
1992 NTSTATUS
1993 AFSQueueWorkerRequest( IN AFSWorkItem *WorkItem)
1994 {
1995
1996     NTSTATUS ntStatus = STATUS_SUCCESS;
1997     AFSDeviceExt *pDevExt = NULL;
1998     BOOLEAN bWait = BooleanFlagOn( WorkItem->RequestFlags, AFS_SYNCHRONOUS_REQUEST);
1999
2000     //
2001     // Submit the work item to the worker
2002     //
2003
2004     ntStatus = AFSInsertWorkitem( WorkItem);
2005
2006     if( bWait)
2007     {
2008
2009         //
2010         // Sync request so block on the work item event
2011         //
2012
2013         ntStatus = KeWaitForSingleObject( &WorkItem->Event,
2014                                           Executive,
2015                                           KernelMode,
2016                                           FALSE,
2017                                           NULL);
2018     }
2019
2020     return ntStatus;
2021 }
2022
2023 NTSTATUS
2024 AFSQueueIOWorkerRequest( IN AFSWorkItem *WorkItem)
2025 {
2026
2027     NTSTATUS ntStatus = STATUS_SUCCESS;
2028     AFSDeviceExt *pDevExt = NULL;
2029     BOOLEAN bWait = BooleanFlagOn( WorkItem->RequestFlags, AFS_SYNCHRONOUS_REQUEST);
2030
2031     //
2032     // Submit the work item to the worker
2033     //
2034
2035     ntStatus = AFSInsertIOWorkitem( WorkItem);
2036
2037     if( bWait)
2038     {
2039
2040         //
2041         // Sync request so block on the work item event
2042         //
2043
2044         ntStatus = KeWaitForSingleObject( &WorkItem->Event,
2045                                           Executive,
2046                                           KernelMode,
2047                                           FALSE,
2048                                           NULL);
2049     }
2050
2051     return ntStatus;
2052 }
2053
2054 NTSTATUS
2055 AFSQueueWorkerRequestAtHead( IN AFSWorkItem *WorkItem)
2056 {
2057
2058     NTSTATUS ntStatus = STATUS_SUCCESS;
2059     AFSDeviceExt *pDevExt = NULL;
2060     BOOLEAN bWait = BooleanFlagOn( WorkItem->RequestFlags, AFS_SYNCHRONOUS_REQUEST);
2061
2062     //
2063     // Submit the work item to the worker
2064     //
2065
2066     ntStatus = AFSInsertWorkitemAtHead( WorkItem);
2067
2068     if( bWait)
2069     {
2070
2071         //
2072         // Sync request so block on the work item event
2073         //
2074
2075         ntStatus = KeWaitForSingleObject( &WorkItem->Event,
2076                                           Executive,
2077                                           KernelMode,
2078                                           FALSE,
2079                                           NULL);
2080     }
2081
2082     return ntStatus;
2083 }
2084
2085 NTSTATUS
2086 AFSQueueFlushExtents( IN AFSFcb *Fcb,
2087                       IN GUID *AuthGroup)
2088 {
2089
2090     NTSTATUS ntStatus = STATUS_SUCCESS;
2091     AFSDeviceExt *pRDRDeviceExt = (AFSDeviceExt *)AFSRDRDeviceObject->DeviceExtension;
2092     AFSWorkItem *pWorkItem = NULL;
2093     LONG lCount;
2094
2095     __try
2096     {
2097
2098         AFSDbgLogMsg( AFS_SUBSYSTEM_WORKER_PROCESSING,
2099                       AFS_TRACE_LEVEL_VERBOSE,
2100                       "AFSQueueFlushExtents Queuing request for FID %08lX-%08lX-%08lX-%08lX\n",
2101                       Fcb->ObjectInformation->FileId.Cell,
2102                       Fcb->ObjectInformation->FileId.Volume,
2103                       Fcb->ObjectInformation->FileId.Vnode,
2104                       Fcb->ObjectInformation->FileId.Unique);
2105
2106         //
2107         // Increment our flush count here just to keep the number of items in the
2108         // queue down. We'll decrement it just below.
2109         //
2110
2111         lCount = InterlockedIncrement( &Fcb->Specific.File.QueuedFlushCount);
2112
2113         if( lCount > 3)
2114         {
2115
2116             AFSDbgLogMsg( AFS_SUBSYSTEM_WORKER_PROCESSING,
2117                           AFS_TRACE_LEVEL_VERBOSE,
2118                           "AFSQueueFlushExtents Max queued items for FID %08lX-%08lX-%08lX-%08lX\n",
2119                           Fcb->ObjectInformation->FileId.Cell,
2120                           Fcb->ObjectInformation->FileId.Volume,
2121                           Fcb->ObjectInformation->FileId.Vnode,
2122                           Fcb->ObjectInformation->FileId.Unique);
2123
2124             try_return( ntStatus);
2125         }
2126
2127         if( BooleanFlagOn( pRDRDeviceExt->DeviceFlags, AFS_DEVICE_FLAG_REDIRECTOR_SHUTDOWN))
2128         {
2129
2130             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2131                           AFS_TRACE_LEVEL_ERROR,
2132                           "AFSQueueFlushExtents Failing request, in shutdown\n");
2133
2134             try_return( ntStatus = STATUS_TOO_LATE);
2135         }
2136
2137         //
2138         // Allocate our request structure and send it to the worker
2139         //
2140
2141         pWorkItem = (AFSWorkItem *)AFSLibExAllocatePoolWithTag( NonPagedPool,
2142                                                                 sizeof( AFSWorkItem),
2143                                                                 AFS_WORK_ITEM_TAG);
2144
2145         if( pWorkItem == NULL)
2146         {
2147
2148             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2149                           AFS_TRACE_LEVEL_ERROR,
2150                           "AFSQueueFlushExtents Failed to allocate work item\n");
2151
2152             try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
2153         }
2154
2155         RtlZeroMemory( pWorkItem,
2156                        sizeof( AFSWorkItem));
2157
2158         pWorkItem->Size = sizeof( AFSWorkItem);
2159
2160         pWorkItem->ProcessID = (ULONGLONG)PsGetCurrentProcessId();
2161
2162         pWorkItem->RequestType = AFS_WORK_FLUSH_FCB;
2163
2164         if ( AuthGroup == NULL)
2165         {
2166
2167             RtlZeroMemory( &pWorkItem->AuthGroup,
2168                            sizeof( GUID));
2169
2170             ntStatus = AFSRetrieveValidAuthGroup( Fcb,
2171                                                   NULL,
2172                                                   TRUE,
2173                                                   &pWorkItem->AuthGroup);
2174         }
2175         else
2176         {
2177             RtlCopyMemory( &pWorkItem->AuthGroup,
2178                            AuthGroup,
2179                            sizeof( GUID));
2180         }
2181
2182         pWorkItem->Specific.Fcb.Fcb = Fcb;
2183
2184         lCount = InterlockedIncrement( &Fcb->OpenReferenceCount);
2185
2186         AFSDbgLogMsg( AFS_SUBSYSTEM_FCB_REF_COUNTING,
2187                       AFS_TRACE_LEVEL_VERBOSE,
2188                       "AFSQueueFlushExtents Increment count on Fcb %08lX Cnt %d\n",
2189                       Fcb,
2190                       lCount);
2191
2192         AFSDbgLogMsg( AFS_SUBSYSTEM_WORKER_PROCESSING,
2193                       AFS_TRACE_LEVEL_VERBOSE,
2194                       "AFSQueueFlushExtents Workitem %08lX for FID %08lX-%08lX-%08lX-%08lX\n",
2195                       pWorkItem,
2196                       Fcb->ObjectInformation->FileId.Cell,
2197                       Fcb->ObjectInformation->FileId.Volume,
2198                       Fcb->ObjectInformation->FileId.Vnode,
2199                       Fcb->ObjectInformation->FileId.Unique);
2200
2201         ntStatus = AFSQueueWorkerRequest( pWorkItem);
2202
2203 try_exit:
2204
2205         AFSDbgLogMsg( AFS_SUBSYSTEM_WORKER_PROCESSING,
2206                       AFS_TRACE_LEVEL_VERBOSE,
2207                       "AFSQueueFlushExtents Request complete Status %08lX FID %08lX-%08lX-%08lX-%08lX\n",
2208                       Fcb->ObjectInformation->FileId.Cell,
2209                       Fcb->ObjectInformation->FileId.Volume,
2210                       Fcb->ObjectInformation->FileId.Vnode,
2211                       Fcb->ObjectInformation->FileId.Unique,
2212                       ntStatus);
2213
2214         //
2215         // Remove the count we added above
2216         //
2217
2218         lCount = InterlockedDecrement( &Fcb->Specific.File.QueuedFlushCount);
2219
2220         if( lCount == 0)
2221         {
2222
2223             KeSetEvent( &Fcb->NPFcb->Specific.File.QueuedFlushEvent,
2224                         0,
2225                         FALSE);
2226         }
2227
2228         if( !NT_SUCCESS( ntStatus))
2229         {
2230
2231             if( pWorkItem != NULL)
2232             {
2233
2234                 lCount = InterlockedDecrement( &Fcb->OpenReferenceCount);
2235
2236                 ExFreePoolWithTag( pWorkItem, AFS_WORK_ITEM_TAG);
2237             }
2238
2239             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2240                           AFS_TRACE_LEVEL_ERROR,
2241                           "AFSQueueFlushExtents Failed to queue request Status %08lX\n", ntStatus);
2242         }
2243     }
2244     __except( AFSExceptionFilter( __FUNCTION__, GetExceptionCode(), GetExceptionInformation()) )
2245     {
2246
2247         AFSDbgLogMsg( 0,
2248                       0,
2249                       "EXCEPTION - AFSQueueFlushExtents\n");
2250
2251         AFSDumpTraceFilesFnc();
2252     }
2253
2254     return ntStatus;
2255 }
2256
2257 NTSTATUS
2258 AFSQueueAsyncRead( IN PDEVICE_OBJECT DeviceObject,
2259                    IN PIRP Irp,
2260                    IN HANDLE CallerProcess)
2261 {
2262
2263     NTSTATUS ntStatus = STATUS_SUCCESS;
2264     AFSWorkItem *pWorkItem = NULL;
2265
2266     __try
2267     {
2268
2269         AFSDbgLogMsg( AFS_SUBSYSTEM_WORKER_PROCESSING,
2270                       AFS_TRACE_LEVEL_VERBOSE,
2271                       "AFSQueueAsyncRead Queuing request for Irp %08lX\n",
2272                       Irp);
2273
2274         pWorkItem = (AFSWorkItem *) AFSLibExAllocatePoolWithTag( NonPagedPool,
2275                                                                  sizeof(AFSWorkItem),
2276                                                                  AFS_WORK_ITEM_TAG);
2277         if (NULL == pWorkItem)
2278         {
2279
2280             AFSDbgLogMsg( AFS_SUBSYSTEM_IO_PROCESSING,
2281                           AFS_TRACE_LEVEL_ERROR,
2282                           "AFSQueueAsyncRead Failed to allocate work item\n");
2283
2284             try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES );
2285         }
2286
2287         RtlZeroMemory( pWorkItem,
2288                        sizeof(AFSWorkItem));
2289
2290         pWorkItem->Size = sizeof( AFSWorkItem);
2291
2292         pWorkItem->RequestType = AFS_WORK_ASYNCH_READ;
2293
2294         pWorkItem->Specific.AsynchIo.Device = DeviceObject;
2295
2296         pWorkItem->Specific.AsynchIo.Irp = Irp;
2297
2298         pWorkItem->Specific.AsynchIo.CallingProcess = CallerProcess;
2299
2300         AFSDbgLogMsg( AFS_SUBSYSTEM_WORKER_PROCESSING,
2301                       AFS_TRACE_LEVEL_VERBOSE,
2302                       "AFSQueueAsyncRead Workitem %08lX for Irp %08lX\n",
2303                       pWorkItem,
2304                       Irp);
2305
2306         ntStatus = AFSQueueWorkerRequest( pWorkItem);
2307
2308 try_exit:
2309
2310         AFSDbgLogMsg( AFS_SUBSYSTEM_WORKER_PROCESSING,
2311                       AFS_TRACE_LEVEL_VERBOSE,
2312                       "AFSQueueAsyncRead Request for Irp %08lX complete Status %08lX\n",
2313                       Irp,
2314                       ntStatus);
2315
2316         if( !NT_SUCCESS( ntStatus))
2317         {
2318
2319             if( pWorkItem != NULL)
2320             {
2321
2322                 ExFreePoolWithTag( pWorkItem, AFS_WORK_ITEM_TAG);
2323             }
2324
2325             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2326                           AFS_TRACE_LEVEL_ERROR,
2327                           "AFSQueueAsyncRead Failed to queue request Status %08lX\n", ntStatus);
2328         }
2329     }
2330     __except( AFSExceptionFilter( __FUNCTION__, GetExceptionCode(), GetExceptionInformation()) )
2331     {
2332
2333         AFSDbgLogMsg( 0,
2334                       0,
2335                       "EXCEPTION - AFSQueueAsyncRead\n");
2336
2337         AFSDumpTraceFilesFnc();
2338     }
2339
2340     return ntStatus;
2341 }
2342
2343 NTSTATUS
2344 AFSQueueAsyncWrite( IN PDEVICE_OBJECT DeviceObject,
2345                     IN PIRP Irp,
2346                     IN HANDLE CallerProcess)
2347 {
2348
2349     NTSTATUS ntStatus = STATUS_SUCCESS;
2350     AFSWorkItem *pWorkItem = NULL;
2351
2352     __try
2353     {
2354
2355         AFSDbgLogMsg( AFS_SUBSYSTEM_WORKER_PROCESSING,
2356                       AFS_TRACE_LEVEL_VERBOSE,
2357                       "AFSQueueAsyncWrite Queuing request for Irp %08lX\n",
2358                       Irp);
2359
2360         pWorkItem = (AFSWorkItem *) AFSLibExAllocatePoolWithTag( NonPagedPool,
2361                                                                  sizeof(AFSWorkItem),
2362                                                                  AFS_WORK_ITEM_TAG);
2363         if (NULL == pWorkItem)
2364         {
2365
2366             AFSDbgLogMsg( AFS_SUBSYSTEM_IO_PROCESSING,
2367                           AFS_TRACE_LEVEL_ERROR,
2368                           "AFSQueueAsyncWrite Failed to allocate work item\n");
2369
2370             try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES );
2371         }
2372
2373         RtlZeroMemory( pWorkItem,
2374                        sizeof(AFSWorkItem));
2375
2376         pWorkItem->Size = sizeof( AFSWorkItem);
2377
2378         pWorkItem->RequestType = AFS_WORK_ASYNCH_WRITE;
2379
2380         pWorkItem->Specific.AsynchIo.Device = DeviceObject;
2381
2382         pWorkItem->Specific.AsynchIo.Irp = Irp;
2383
2384         pWorkItem->Specific.AsynchIo.CallingProcess = CallerProcess;
2385
2386         AFSDbgLogMsg( AFS_SUBSYSTEM_WORKER_PROCESSING,
2387                       AFS_TRACE_LEVEL_VERBOSE,
2388                       "AFSQueueAsyncWrite Workitem %08lX for Irp %08lX\n",
2389                       pWorkItem,
2390                       Irp);
2391
2392         ntStatus = AFSQueueWorkerRequest( pWorkItem);
2393
2394 try_exit:
2395
2396         AFSDbgLogMsg( AFS_SUBSYSTEM_WORKER_PROCESSING,
2397                       AFS_TRACE_LEVEL_VERBOSE,
2398                       "AFSQueueAsyncWrite Request for Irp %08lX complete Status %08lX\n",
2399                       Irp,
2400                       ntStatus);
2401
2402         if( !NT_SUCCESS( ntStatus))
2403         {
2404
2405             if( pWorkItem != NULL)
2406             {
2407
2408                 ExFreePoolWithTag( pWorkItem, AFS_WORK_ITEM_TAG);
2409             }
2410
2411             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2412                           AFS_TRACE_LEVEL_ERROR,
2413                           "AFSQueueAsyncWrite Failed to queue request Status %08lX\n", ntStatus);
2414         }
2415     }
2416     __except( AFSExceptionFilter( __FUNCTION__, GetExceptionCode(), GetExceptionInformation()) )
2417     {
2418
2419         AFSDbgLogMsg( 0,
2420                       0,
2421                       "EXCEPTION - AFSQueueAsyncWrite\n");
2422
2423         AFSDumpTraceFilesFnc();
2424     }
2425
2426     return ntStatus;
2427 }
2428
2429 NTSTATUS
2430 AFSQueueGlobalRootEnumeration()
2431 {
2432
2433     NTSTATUS ntStatus = STATUS_SUCCESS;
2434     AFSWorkItem *pWorkItem = NULL;
2435
2436     __try
2437     {
2438
2439         pWorkItem = (AFSWorkItem *) AFSLibExAllocatePoolWithTag( NonPagedPool,
2440                                                                  sizeof(AFSWorkItem),
2441                                                                  AFS_WORK_ITEM_TAG);
2442         if (NULL == pWorkItem)
2443         {
2444
2445             AFSDbgLogMsg( AFS_SUBSYSTEM_IO_PROCESSING,
2446                           AFS_TRACE_LEVEL_ERROR,
2447                           "AFSQueueGlobalRootEnumeration Failed to allocate work item\n");
2448
2449             try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES );
2450         }
2451
2452         RtlZeroMemory( pWorkItem,
2453                        sizeof(AFSWorkItem));
2454
2455         pWorkItem->Size = sizeof( AFSWorkItem);
2456
2457         pWorkItem->RequestType = AFS_WORK_ENUMERATE_GLOBAL_ROOT;
2458
2459         AFSDbgLogMsg( AFS_SUBSYSTEM_WORKER_PROCESSING,
2460                       AFS_TRACE_LEVEL_VERBOSE,
2461                       "AFSQueueGlobalRootEnumeration Workitem %08lX\n",
2462                       pWorkItem);
2463
2464         ntStatus = AFSQueueWorkerRequest( pWorkItem);
2465
2466 try_exit:
2467
2468         AFSDbgLogMsg( AFS_SUBSYSTEM_WORKER_PROCESSING,
2469                       AFS_TRACE_LEVEL_VERBOSE,
2470                       "AFSQueueGlobalRootEnumeration Request complete Status %08lX\n",
2471                       ntStatus);
2472
2473         if( !NT_SUCCESS( ntStatus))
2474         {
2475
2476             if( pWorkItem != NULL)
2477             {
2478
2479                 ExFreePoolWithTag( pWorkItem, AFS_WORK_ITEM_TAG);
2480             }
2481
2482             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2483                           AFS_TRACE_LEVEL_ERROR,
2484                           "AFSQueueGlobalRootEnumeration Failed to queue request Status %08lX\n",
2485                           ntStatus);
2486         }
2487     }
2488     __except( AFSExceptionFilter( __FUNCTION__, GetExceptionCode(), GetExceptionInformation()) )
2489     {
2490
2491         AFSDbgLogMsg( 0,
2492                       0,
2493                       "EXCEPTION - AFSQueueGlobalRootEnumeration\n");
2494
2495         AFSDumpTraceFilesFnc();
2496     }
2497
2498     return ntStatus;
2499 }
2500
2501 NTSTATUS
2502 AFSQueueStartIos( IN PFILE_OBJECT CacheFileObject,
2503                   IN UCHAR FunctionCode,
2504                   IN ULONG RequestFlags,
2505                   IN AFSIoRun *IoRuns,
2506                   IN ULONG RunCount,
2507                   IN AFSGatherIo *GatherIo)
2508 {
2509
2510     NTSTATUS ntStatus = STATUS_SUCCESS;
2511     AFSDeviceExt *pRDRDeviceExt = (AFSDeviceExt *)AFSRDRDeviceObject->DeviceExtension;
2512     AFSWorkItem *pWorkItem = NULL;
2513
2514     __try
2515     {
2516
2517         if( BooleanFlagOn( pRDRDeviceExt->DeviceFlags, AFS_DEVICE_FLAG_REDIRECTOR_SHUTDOWN))
2518         {
2519
2520             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2521                           AFS_TRACE_LEVEL_ERROR,
2522                           "AFSQueueStartIos Failing request, in shutdown\n");
2523
2524             try_return( ntStatus = STATUS_TOO_LATE);
2525         }
2526
2527         //
2528         // Allocate our request structure and send it to the worker
2529         //
2530
2531         pWorkItem = (AFSWorkItem *)AFSLibExAllocatePoolWithTag( NonPagedPool,
2532                                                                 sizeof( AFSWorkItem),
2533                                                                 AFS_WORK_ITEM_TAG);
2534
2535         if( pWorkItem == NULL)
2536         {
2537
2538             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2539                           AFS_TRACE_LEVEL_ERROR,
2540                           "AFSQueueStartIos Failed to allocate work item\n");
2541
2542             try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
2543         }
2544
2545         RtlZeroMemory( pWorkItem,
2546                        sizeof( AFSWorkItem));
2547
2548         KeInitializeEvent( &pWorkItem->Event,
2549                            NotificationEvent,
2550                            FALSE);
2551
2552         pWorkItem->Size = sizeof( AFSWorkItem);
2553
2554         pWorkItem->ProcessID = (ULONGLONG)PsGetCurrentProcessId();
2555
2556         pWorkItem->RequestType = AFS_WORK_START_IOS;
2557
2558         pWorkItem->Specific.CacheAccess.CacheFileObject = CacheFileObject;
2559
2560         pWorkItem->Specific.CacheAccess.FunctionCode = FunctionCode;
2561
2562         pWorkItem->Specific.CacheAccess.RequestFlags = RequestFlags;
2563
2564         pWorkItem->Specific.CacheAccess.IoRuns = IoRuns;
2565
2566         pWorkItem->Specific.CacheAccess.RunCount = RunCount;
2567
2568         pWorkItem->Specific.CacheAccess.GatherIo = GatherIo;
2569
2570         AFSDbgLogMsg( AFS_SUBSYSTEM_WORKER_PROCESSING,
2571                       AFS_TRACE_LEVEL_VERBOSE,
2572                       "AFSQueueStartIos Queuing IO Workitem %08lX\n",
2573                       pWorkItem);
2574
2575         ntStatus = AFSQueueIOWorkerRequest( pWorkItem);
2576
2577 try_exit:
2578
2579         AFSDbgLogMsg( AFS_SUBSYSTEM_WORKER_PROCESSING,
2580                       AFS_TRACE_LEVEL_VERBOSE,
2581                       "AFSQueueStartIos Request complete Status %08lX\n",
2582                       ntStatus);
2583
2584         if( !NT_SUCCESS( ntStatus))
2585         {
2586
2587             if( pWorkItem != NULL)
2588             {
2589
2590                 ExFreePoolWithTag( pWorkItem, AFS_WORK_ITEM_TAG);
2591             }
2592         }
2593     }
2594     __except( AFSExceptionFilter( __FUNCTION__, GetExceptionCode(), GetExceptionInformation()) )
2595     {
2596
2597         AFSDbgLogMsg( 0,
2598                       0,
2599                       "EXCEPTION - AFSQueueStartIos\n");
2600
2601         AFSDumpTraceFilesFnc();
2602     }
2603
2604     return ntStatus;
2605 }
2606
2607 NTSTATUS
2608 AFSQueueInvalidateObject( IN AFSObjectInfoCB *ObjectInfo,
2609                           IN ULONG InvalidateReason)
2610 {
2611
2612     NTSTATUS ntStatus = STATUS_SUCCESS;
2613     AFSWorkItem *pWorkItem = NULL;
2614
2615     __try
2616     {
2617
2618         pWorkItem = (AFSWorkItem *) AFSLibExAllocatePoolWithTag( NonPagedPool,
2619                                                                  sizeof(AFSWorkItem),
2620                                                                  AFS_WORK_ITEM_TAG);
2621         if (NULL == pWorkItem)
2622         {
2623
2624             AFSDbgLogMsg( AFS_SUBSYSTEM_IO_PROCESSING,
2625                           AFS_TRACE_LEVEL_ERROR,
2626                           "AFSQueueInvalidateObject Failed to allocate work item\n");
2627
2628             try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES );
2629         }
2630
2631         RtlZeroMemory( pWorkItem,
2632                        sizeof(AFSWorkItem));
2633
2634         pWorkItem->Size = sizeof( AFSWorkItem);
2635
2636         pWorkItem->RequestType = AFS_WORK_INVALIDATE_OBJECT;
2637
2638         pWorkItem->Specific.Invalidate.ObjectInfo = ObjectInfo;
2639
2640         pWorkItem->Specific.Invalidate.InvalidateReason = InvalidateReason;
2641
2642         AFSDbgLogMsg( AFS_SUBSYSTEM_WORKER_PROCESSING,
2643                       AFS_TRACE_LEVEL_VERBOSE,
2644                       "AFSQueueInvalidateObject Workitem %08lX\n",
2645                       pWorkItem);
2646
2647         ntStatus = AFSQueueWorkerRequest( pWorkItem);
2648
2649 try_exit:
2650
2651         AFSDbgLogMsg( AFS_SUBSYSTEM_WORKER_PROCESSING,
2652                       AFS_TRACE_LEVEL_VERBOSE,
2653                       "AFSQueueInvalidateObject Request complete Status %08lX\n",
2654                       ntStatus);
2655
2656         if( !NT_SUCCESS( ntStatus))
2657         {
2658
2659             if( pWorkItem != NULL)
2660             {
2661                 ExFreePoolWithTag( pWorkItem, AFS_WORK_ITEM_TAG);
2662             }
2663
2664             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2665                           AFS_TRACE_LEVEL_ERROR,
2666                           "AFSQueueInvalidateObject Failed to queue request Status %08lX\n",
2667                           ntStatus);
2668         }
2669     }
2670     __except( AFSExceptionFilter( __FUNCTION__, GetExceptionCode(), GetExceptionInformation()) )
2671     {
2672
2673         AFSDbgLogMsg( 0,
2674                       0,
2675                       "EXCEPTION - AFSQueueInvalidateObject\n");
2676
2677         AFSDumpTraceFilesFnc();
2678     }
2679
2680     return ntStatus;
2681 }