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

   1 /*
   2  * Copyright (c) 2008, 2009, 2010, 2011 Kernel Drivers, LLC.
   3  * Copyright (c) 2009, 2010, 2011 Your File System, Inc.
   4  * All rights reserved.
   5  *
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   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  *
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  11  *   this list of conditions and the following disclaimer.
  12  * - Redistributions in binary form must reproduce the above copyright
  13  *   notice,
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  15  *   documentation
  16  *   and/or other materials provided with the distribution.
  17  * - Neither the names of Kernel Drivers, LLC and Your File System, Inc.
  18  *   nor the names of their contributors may be used to endorse or promote
  19  *   products derived from this software without specific prior written
  20  *   permission from Kernel Drivers, LLC and Your File System, Inc.
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  32  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  33  */
  34
  35 //
  36 // File: AFSWorker.cpp
  37 //
  38
  39 #include "AFSCommon.h"
  40
  41 //
  42 // Function: AFSInitializeWorkerPool
  43 //
  44 // Description:
  45 //
  46 //      This function initializes the worker thread pool
  47 //
  48 // Return:
  49 //
  50 //      A status is returned for the function
  51 //
  52
  53 NTSTATUS
  54 AFSInitializeWorkerPool()
  55 {
  56
  57     NTSTATUS ntStatus = STATUS_SUCCESS;
  58     AFSWorkQueueContext        *pCurrentWorker = NULL, *pLastWorker = NULL;
  59     AFSDeviceExt *pDevExt = NULL;
  60
  61     __Enter
  62     {
  63
  64         pDevExt = (AFSDeviceExt *)AFSLibraryDeviceObject->DeviceExtension;
  65
  66         //
  67         // Initialize the worker threads.
  68         //
  69
  70         pDevExt->Specific.Library.WorkerCount = 0;
  71
  72         KeInitializeEvent( &pDevExt->Specific.Library.WorkerQueueHasItems,
  73                            SynchronizationEvent,
  74                            FALSE);
  75
  76         //
  77         // Initialize the queue resource
  78         //
  79
  80         ExInitializeResourceLite( &pDevExt->Specific.Library.QueueLock);
  81
  82         while( pDevExt->Specific.Library.WorkerCount < AFS_WORKER_COUNT)
  83         {
  84
  85             pCurrentWorker = (AFSWorkQueueContext *)AFSLibExAllocatePoolWithTag( NonPagedPool,
  86                                                                                  sizeof( AFSWorkQueueContext),
  87                                                                                  AFS_WORKER_CB_TAG);
  88
  89             if( pCurrentWorker == NULL)
  90             {
  91
  92                 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
  93                               AFS_TRACE_LEVEL_ERROR,
  94                               "AFSInitializeWorkerPool Failed to allocate worker context\n");
  95
  96                 ntStatus = STATUS_INSUFFICIENT_RESOURCES;
  97
  98                 break;
  99             }
 100
 101             RtlZeroMemory( pCurrentWorker,
 102                            sizeof( AFSWorkQueueContext));
 103
 104             ntStatus = AFSInitWorkerThread( pCurrentWorker,
 105                                             (PKSTART_ROUTINE)AFSWorkerThread);
 106
 107             if( !NT_SUCCESS( ntStatus))
 108             {
 109
 110                 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
 111                               AFS_TRACE_LEVEL_ERROR,
 112                               "AFSInitializeWorkerPool Failed to initialize worker thread Status %08lX\n", ntStatus);
 113
 114                 ExFreePool( pCurrentWorker);
 115
 116                 break;
 117             }
 118
 119             if( pDevExt->Specific.Library.PoolHead == NULL)
 120             {
 121
 122                 pDevExt->Specific.Library.PoolHead = pCurrentWorker;
 123             }
 124             else
 125             {
 126
 127                 pLastWorker->fLink = pCurrentWorker;
 128             }
 129
 130             pLastWorker = pCurrentWorker;
 131
 132             pDevExt->Specific.Library.WorkerCount++;
 133         }
 134
 135         //
 136         // If there was a failure but there is at least one worker, then go with it.
 137         //
 138
 139         if( !NT_SUCCESS( ntStatus) &&
 140             pDevExt->Specific.Library.WorkerCount == 0)
 141         {
 142
 143             try_return( ntStatus);
 144         }
 145
 146         ntStatus = STATUS_SUCCESS;
 147
 148         //
 149         // Now our IO Worker queue
 150         //
 151
 152         pDevExt->Specific.Library.IOWorkerCount = 0;
 153
 154         KeInitializeEvent( &pDevExt->Specific.Library.IOWorkerQueueHasItems,
 155                            SynchronizationEvent,
 156                            FALSE);
 157
 158         //
 159         // Initialize the queue resource
 160         //
 161
 162         ExInitializeResourceLite( &pDevExt->Specific.Library.IOQueueLock);
 163
 164         while( pDevExt->Specific.Library.IOWorkerCount < AFS_IO_WORKER_COUNT)
 165         {
 166
 167             pCurrentWorker = (AFSWorkQueueContext *)AFSLibExAllocatePoolWithTag( NonPagedPool,
 168                                                                                  sizeof( AFSWorkQueueContext),
 169                                                                                  AFS_WORKER_CB_TAG);
 170
 171             if( pCurrentWorker == NULL)
 172             {
 173
 174                 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
 175                               AFS_TRACE_LEVEL_ERROR,
 176                               "AFSInitializeWorkerPool Failed to allocate IO worker context\n");
 177
 178                 ntStatus = STATUS_INSUFFICIENT_RESOURCES;
 179
 180                 break;
 181             }
 182
 183             RtlZeroMemory( pCurrentWorker,
 184                            sizeof( AFSWorkQueueContext));
 185
 186             ntStatus = AFSInitWorkerThread( pCurrentWorker,
 187                                             (PKSTART_ROUTINE)AFSIOWorkerThread);
 188
 189             if( !NT_SUCCESS( ntStatus))
 190             {
 191
 192                 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
 193                               AFS_TRACE_LEVEL_ERROR,
 194                               "AFSInitializeWorkerPool Failed to initialize IO worker thread Status %08lX\n", ntStatus);
 195
 196                 ExFreePool( pCurrentWorker);
 197
 198                 break;
 199             }
 200
 201             if( pDevExt->Specific.Library.IOPoolHead == NULL)
 202             {
 203
 204                 pDevExt->Specific.Library.IOPoolHead = pCurrentWorker;
 205             }
 206             else
 207             {
 208
 209                 pLastWorker->fLink = pCurrentWorker;
 210             }
 211
 212             pLastWorker = pCurrentWorker;
 213
 214             pDevExt->Specific.Library.IOWorkerCount++;
 215         }
 216
 217         //
 218         // If there was a failure but there is at least one worker, then go with it.
 219         //
 220
 221         if( !NT_SUCCESS( ntStatus) &&
 222             pDevExt->Specific.Library.IOWorkerCount == 0)
 223         {
 224
 225             try_return( ntStatus);
 226         }
 227
 228 try_exit:
 229
 230         if( !NT_SUCCESS( ntStatus))
 231         {
 232
 233             //
 234             // Failed to initialize the pool so tear it down
 235             //
 236
 237             AFSRemoveWorkerPool();
 238         }
 239     }
 240
 241     return ntStatus;
 242 }
 243
 244 //
 245 // Function: AFSRemoveWorkerPool
 246 //
 247 // Description:
 248 //
 249 //      This function tears down the worker thread pool
 250 //
 251 // Return:
 252 //
 253 //      A status is returned for the function
 254 //
 255
 256 NTSTATUS
 257 AFSRemoveWorkerPool()
 258 {
 259
 260     NTSTATUS ntStatus = STATUS_SUCCESS;
 261     ULONG index = 0;
 262     AFSWorkQueueContext        *pCurrentWorker = NULL, *pNextWorker = NULL;
 263     AFSDeviceExt *pDevExt = NULL;
 264
 265     pDevExt = (AFSDeviceExt *)AFSLibraryDeviceObject->DeviceExtension;
 266
 267     //
 268     // Loop through the workers shutting them down in two stages.
 269     // First, clear AFS_WORKER_PROCESS_REQUESTS so that workers
 270     // stop processing requests.  Second, call AFSShutdownWorkerThread()
 271     // to wake the workers and wait for them to exit.
 272     //
 273
 274     pCurrentWorker = pDevExt->Specific.Library.PoolHead;
 275
 276     while( index < pDevExt->Specific.Library.WorkerCount)
 277     {
 278
 279         ClearFlag( pCurrentWorker->State, AFS_WORKER_PROCESS_REQUESTS);
 280
 281         pCurrentWorker = pCurrentWorker->fLink;
 282
 283         if ( pCurrentWorker == NULL)
 284         {
 285
 286             break;
 287         }
 288
 289         index++;
 290     }
 291
 292     pCurrentWorker = pDevExt->Specific.Library.PoolHead;
 293
 294     index = 0;
 295
 296     while( index < pDevExt->Specific.Library.WorkerCount)
 297     {
 298
 299         ntStatus = AFSShutdownWorkerThread( pCurrentWorker);
 300
 301         pNextWorker = pCurrentWorker->fLink;
 302
 303         ExFreePool( pCurrentWorker);
 304
 305         pCurrentWorker = pNextWorker;
 306
 307         if( pCurrentWorker == NULL)
 308         {
 309
 310             break;
 311         }
 312
 313         index++;
 314     }
 315
 316     pDevExt->Specific.Library.PoolHead = NULL;
 317
 318     ExDeleteResourceLite( &pDevExt->Specific.Library.QueueLock);
 319
 320     //
 321     // Loop through the IO workers shutting them down in two stages.
 322     // First, clear AFS_WORKER_PROCESS_REQUESTS so that workers
 323     // stop processing requests.  Second, call AFSShutdownWorkerThread()
 324     // to wake the workers and wait for them to exit.
 325     //
 326
 327     pCurrentWorker = pDevExt->Specific.Library.IOPoolHead;
 328
 329     index = 0;
 330
 331     while( index < pDevExt->Specific.Library.IOWorkerCount)
 332     {
 333
 334         ClearFlag( pCurrentWorker->State, AFS_WORKER_PROCESS_REQUESTS);
 335
 336         pCurrentWorker = pCurrentWorker->fLink;
 337
 338         if ( pCurrentWorker == NULL)
 339         {
 340
 341             break;
 342         }
 343
 344         index++;
 345     }
 346
 347     pCurrentWorker = pDevExt->Specific.Library.IOPoolHead;
 348
 349     index = 0;
 350
 351     while( index < pDevExt->Specific.Library.IOWorkerCount)
 352     {
 353
 354         ntStatus = AFSShutdownIOWorkerThread( pCurrentWorker);
 355
 356         pNextWorker = pCurrentWorker->fLink;
 357
 358         ExFreePool( pCurrentWorker);
 359
 360         pCurrentWorker = pNextWorker;
 361
 362         if( pCurrentWorker == NULL)
 363         {
 364
 365             break;
 366         }
 367
 368         index++;
 369     }
 370
 371     pDevExt->Specific.Library.IOPoolHead = NULL;
 372
 373     ExDeleteResourceLite( &pDevExt->Specific.Library.IOQueueLock);
 374
 375     return ntStatus;
 376 }
 377
 378 NTSTATUS
 379 AFSInitVolumeWorker( IN AFSVolumeCB *VolumeCB)
 380 {
 381
 382     NTSTATUS ntStatus = STATUS_SUCCESS;
 383     AFSWorkQueueContext *pWorker = &VolumeCB->VolumeWorkerContext;
 384     HANDLE hThread;
 385     AFSDeviceExt *pControlDeviceExt = (AFSDeviceExt *)AFSControlDeviceObject->DeviceExtension;
 386     PKSTART_ROUTINE pStartRoutine = NULL;
 387     LONG lCount;
 388
 389     __Enter
 390     {
 391
 392         if( VolumeCB == AFSGlobalRoot)
 393         {
 394
 395             pStartRoutine = AFSPrimaryVolumeWorkerThread;
 396         }
 397         else
 398         {
 399
 400             pStartRoutine = AFSVolumeWorkerThread;
 401         }
 402
 403         //
 404         // Initialize the worker thread
 405         //
 406
 407         KeInitializeEvent( &pWorker->WorkerThreadReady,
 408                            NotificationEvent,
 409                            FALSE);
 410
 411         //
 412         // Set the worker to process requests
 413         //
 414
 415         pWorker->State = AFS_WORKER_PROCESS_REQUESTS;
 416
 417         //
 418         // Launch the thread
 419         //
 420
 421         ntStatus =  PsCreateSystemThread( &hThread,
 422                                           0,
 423                                           NULL,
 424                                           NULL,
 425                                           NULL,
 426                                           pStartRoutine,
 427                                           (void *)VolumeCB);
 428
 429         if( NT_SUCCESS( ntStatus))
 430         {
 431
 432             ObReferenceObjectByHandle( hThread,
 433                                        GENERIC_READ | GENERIC_WRITE,
 434                                        NULL,
 435                                        KernelMode,
 436                                        (PVOID *)&pWorker->WorkerThreadObject,
 437                                        NULL);
 438
 439             ntStatus = KeWaitForSingleObject( &pWorker->WorkerThreadReady,
 440                                               Executive,
 441                                               KernelMode,
 442                                               FALSE,
 443                                               NULL);
 444
 445             lCount = InterlockedIncrement( &pControlDeviceExt->Specific.Control.VolumeWorkerThreadCount);
 446
 447             if( lCount > 0)
 448             {
 449
 450                 KeClearEvent( &pControlDeviceExt->Specific.Control.VolumeWorkerCloseEvent);
 451             }
 452
 453             ZwClose( hThread);
 454         }
 455     }
 456
 457     return ntStatus;
 458 }
 459
 460 //
 461 // Function: AFSInitWorkerThread
 462 //
 463 // Description:
 464 //
 465 //      This function initializes a worker thread in the pool
 466 //
 467 // Return:
 468 //
 469 //      A status is returned for the function
 470 //
 471
 472 NTSTATUS
 473 AFSInitWorkerThread( IN AFSWorkQueueContext *PoolContext,
 474                      IN PKSTART_ROUTINE WorkerRoutine)
 475 {
 476
 477     NTSTATUS ntStatus = STATUS_SUCCESS;
 478     HANDLE Handle;
 479
 480     //
 481     // INitialize the worker signal thread
 482     //
 483
 484     KeInitializeEvent( &PoolContext->WorkerThreadReady,
 485                        NotificationEvent,
 486                        FALSE);
 487
 488     //
 489     // Set the worker to process requests
 490     //
 491
 492     PoolContext->State = AFS_WORKER_PROCESS_REQUESTS;
 493
 494     //
 495     // Launch the thread
 496     //
 497
 498     ntStatus =  PsCreateSystemThread( &Handle,
 499                                       0,
 500                                       NULL,
 501                                       NULL,
 502                                       NULL,
 503                                       WorkerRoutine,
 504                                       (void *)PoolContext);
 505
 506     if( NT_SUCCESS( ntStatus))
 507     {
 508
 509         ObReferenceObjectByHandle( Handle,
 510                                    GENERIC_READ | GENERIC_WRITE,
 511                                    NULL,
 512                                    KernelMode,
 513                                    (PVOID *)&PoolContext->WorkerThreadObject,
 514                                    NULL);
 515
 516         ntStatus = KeWaitForSingleObject( &PoolContext->WorkerThreadReady,
 517                                           Executive,
 518                                           KernelMode,
 519                                           FALSE,
 520                                           NULL);
 521
 522         ZwClose( Handle);
 523     }
 524
 525     return ntStatus;
 526 }
 527
 528 NTSTATUS
 529 AFSShutdownVolumeWorker( IN AFSVolumeCB *VolumeCB)
 530 {
 531
 532     NTSTATUS ntStatus = STATUS_SUCCESS;
 533     AFSWorkQueueContext *pWorker = &VolumeCB->VolumeWorkerContext;
 534
 535     if( pWorker->WorkerThreadObject != NULL &&
 536         BooleanFlagOn( pWorker->State, AFS_WORKER_INITIALIZED))
 537     {
 538
 539         //
 540         // Clear the 'keep processing' flag
 541         //
 542
 543         ClearFlag( pWorker->State, AFS_WORKER_PROCESS_REQUESTS);
 544
 545         ntStatus = KeWaitForSingleObject( pWorker->WorkerThreadObject,
 546                                           Executive,
 547                                           KernelMode,
 548                                           FALSE,
 549                                           NULL);
 550
 551         ObDereferenceObject( pWorker->WorkerThreadObject);
 552
 553         pWorker->WorkerThreadObject = NULL;
 554     }
 555
 556     return ntStatus;
 557 }
 558
 559 //
 560 // Function: AFSShutdownWorkerThread
 561 //
 562 // Description:
 563 //
 564 //      This function shutsdown a worker thread in the pool
 565 //
 566 // Return:
 567 //
 568 //      A status is returned for the function
 569 //
 570
 571 NTSTATUS
 572 AFSShutdownWorkerThread( IN AFSWorkQueueContext *PoolContext)
 573 {
 574
 575     NTSTATUS ntStatus = STATUS_SUCCESS;
 576     AFSDeviceExt *pDeviceExt = (AFSDeviceExt *)AFSLibraryDeviceObject->DeviceExtension;
 577
 578     if( PoolContext->WorkerThreadObject != NULL &&
 579         BooleanFlagOn( PoolContext->State, AFS_WORKER_INITIALIZED))
 580     {
 581
 582         //
 583         // Wake up the thread if it is a sleep
 584         //
 585
 586         KeSetEvent( &pDeviceExt->Specific.Library.WorkerQueueHasItems,
 587                     0,
 588                     FALSE);
 589
 590         ntStatus = KeWaitForSingleObject( PoolContext->WorkerThreadObject,
 591                                           Executive,
 592                                           KernelMode,
 593                                           FALSE,
 594                                           NULL);
 595
 596         ObDereferenceObject( PoolContext->WorkerThreadObject);
 597
 598         PoolContext->WorkerThreadObject = NULL;
 599     }
 600
 601     return ntStatus;
 602 }
 603
 604 //
 605 // Function: AFSShutdownIOWorkerThread
 606 //
 607 // Description:
 608 //
 609 //      This function shutsdown an IO worker thread in the pool
 610 //
 611 // Return:
 612 //
 613 //      A status is returned for the function
 614 //
 615
 616 NTSTATUS
 617 AFSShutdownIOWorkerThread( IN AFSWorkQueueContext *PoolContext)
 618 {
 619
 620     NTSTATUS ntStatus = STATUS_SUCCESS;
 621     AFSDeviceExt *pDeviceExt = (AFSDeviceExt *)AFSLibraryDeviceObject->DeviceExtension;
 622
 623     if( PoolContext->WorkerThreadObject != NULL &&
 624         BooleanFlagOn( PoolContext->State, AFS_WORKER_INITIALIZED))
 625     {
 626
 627         //
 628         // Wake up the thread if it is a sleep
 629         //
 630
 631         KeSetEvent( &pDeviceExt->Specific.Library.IOWorkerQueueHasItems,
 632                     0,
 633                     FALSE);
 634
 635         ntStatus = KeWaitForSingleObject( PoolContext->WorkerThreadObject,
 636                                           Executive,
 637                                           KernelMode,
 638                                           FALSE,
 639                                           NULL);
 640
 641         ObDereferenceObject( PoolContext->WorkerThreadObject);
 642
 643         PoolContext->WorkerThreadObject = NULL;
 644     }
 645
 646     return ntStatus;
 647 }
 648
 649 //
 650 // Function: AFSWorkerThread
 651 //
 652 // Description:
 653 //
 654 //      This is the worker thread entry point.
 655 //
 656 // Return:
 657 //
 658 //      A status is returned for the function
 659 //
 660
 661 void
 662 AFSWorkerThread( IN PVOID Context)
 663 {
 664
 665     NTSTATUS ntStatus = STATUS_SUCCESS;
 666     AFSWorkQueueContext *pPoolContext = (AFSWorkQueueContext *)Context;
 667     AFSWorkItem *pWorkItem;
 668     BOOLEAN freeWorkItem = TRUE;
 669     AFSDeviceExt *pLibraryDevExt = NULL;
 670     LONG lCount;
 671
 672     pLibraryDevExt = (AFSDeviceExt *)AFSLibraryDeviceObject->DeviceExtension;
 673
 674     //
 675     // Indicate that we are initialized and ready
 676     //
 677
 678     KeSetEvent( &pPoolContext->WorkerThreadReady,
 679                 0,
 680                 FALSE);
 681
 682     //
 683     // Indicate we are initialized
 684     //
 685
 686     SetFlag( pPoolContext->State, AFS_WORKER_INITIALIZED);
 687
 688     ntStatus = KeWaitForSingleObject( &pLibraryDevExt->Specific.Library.WorkerQueueHasItems,
 689                                       Executive,
 690                                       KernelMode,
 691                                       FALSE,
 692                                       NULL);
 693
 694     while( BooleanFlagOn( pPoolContext->State, AFS_WORKER_PROCESS_REQUESTS))
 695     {
 696
 697         if( !NT_SUCCESS( ntStatus))
 698         {
 699
 700             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
 701                           AFS_TRACE_LEVEL_ERROR,
 702                           "AFSWorkerThread Wait for queue items failed Status %08lX\n", ntStatus);
 703
 704             ntStatus = STATUS_SUCCESS;
 705         }
 706         else
 707         {
 708
 709             pWorkItem = AFSRemoveWorkItem();
 710
 711             if( pWorkItem == NULL)
 712             {
 713
 714                 ntStatus = KeWaitForSingleObject( &pLibraryDevExt->Specific.Library.WorkerQueueHasItems,
 715                                                   Executive,
 716                                                   KernelMode,
 717                                                   FALSE,
 718                                                   NULL);
 719             }
 720             else
 721             {
 722
 723                 freeWorkItem = TRUE;
 724
 725                 //
 726                 // Switch on the type of work item to process
 727                 //
 728
 729                 switch( pWorkItem->RequestType)
 730                 {
 731
 732                     case AFS_WORK_FLUSH_FCB:
 733                     {
 734
 735                         ntStatus = AFSFlushExtents( pWorkItem->Specific.Fcb.Fcb,
 736                                                     &pWorkItem->AuthGroup);
 737
 738                         if( !NT_SUCCESS( ntStatus))
 739                         {
 740
 741                             AFSReleaseExtentsWithFlush( pWorkItem->Specific.Fcb.Fcb,
 742                                                         &pWorkItem->AuthGroup,
 743                                                         FALSE);
 744                         }
 745
 746                         ASSERT( pWorkItem->Specific.Fcb.Fcb->OpenReferenceCount != 0);
 747
 748                         lCount = InterlockedDecrement( &pWorkItem->Specific.Fcb.Fcb->OpenReferenceCount);
 749
 750                         break;
 751                     }
 752
 753                     case AFS_WORK_ENUMERATE_GLOBAL_ROOT:
 754                     {
 755
 756                         AFSEnumerateGlobalRoot( NULL);
 757
 758                         break;
 759                     }
 760
 761                     case AFS_WORK_INVALIDATE_OBJECT:
 762                     {
 763
 764                         AFSPerformObjectInvalidate( pWorkItem->Specific.Invalidate.ObjectInfo,
 765                                                     pWorkItem->Specific.Invalidate.InvalidateReason);
 766
 767                         freeWorkItem = TRUE;
 768
 769                         break;
 770                     }
 771
 772                     case AFS_WORK_START_IOS:
 773                     {
 774
 775                         freeWorkItem = TRUE;
 776
 777                         break;
 778                     }
 779
 780                     default:
 781
 782                         AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
 783                                       AFS_TRACE_LEVEL_ERROR,
 784                                       "AFSWorkerThread Unknown request type %d\n", pWorkItem->RequestType);
 785
 786                         break;
 787                 }
 788
 789                 if( freeWorkItem)
 790                 {
 791
 792                     ExFreePoolWithTag( pWorkItem, AFS_WORK_ITEM_TAG);
 793                 }
 794
 795                 ntStatus = STATUS_SUCCESS;
 796             }
 797         }
 798     } // worker thread loop
 799
 800     ClearFlag( pPoolContext->State, AFS_WORKER_INITIALIZED);
 801
 802     // Wake up another worker so they too can exit
 803
 804     KeSetEvent( &pLibraryDevExt->Specific.Library.WorkerQueueHasItems,
 805                 0,
 806                 FALSE);
 807
 808     PsTerminateSystemThread( 0);
 809
 810     return;
 811 }
 812
 813 void
 814 AFSIOWorkerThread( IN PVOID Context)
 815 {
 816
 817     NTSTATUS ntStatus = STATUS_SUCCESS;
 818     AFSWorkQueueContext *pPoolContext = (AFSWorkQueueContext *)Context;
 819     AFSWorkItem *pWorkItem;
 820     BOOLEAN freeWorkItem = TRUE;
 821     AFSDeviceExt *pLibraryDevExt = NULL, *pRdrDevExt = NULL;
 822
 823     pLibraryDevExt = (AFSDeviceExt *)AFSLibraryDeviceObject->DeviceExtension;
 824
 825     //
 826     // Indicate that we are initialized and ready
 827     //
 828
 829     KeSetEvent( &pPoolContext->WorkerThreadReady,
 830                 0,
 831                 FALSE);
 832
 833
 834     //
 835     // Indicate we are initialized
 836     //
 837
 838     SetFlag( pPoolContext->State, AFS_WORKER_INITIALIZED);
 839
 840     ntStatus = KeWaitForSingleObject( &pLibraryDevExt->Specific.Library.IOWorkerQueueHasItems,
 841                                       Executive,
 842                                       KernelMode,
 843                                       FALSE,
 844                                       NULL);
 845
 846     while( BooleanFlagOn( pPoolContext->State, AFS_WORKER_PROCESS_REQUESTS))
 847     {
 848
 849         if( !NT_SUCCESS( ntStatus))
 850         {
 851
 852             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
 853                           AFS_TRACE_LEVEL_ERROR,
 854                           "AFSIOWorkerThread Wait for queue items failed Status %08lX\n", ntStatus);
 855
 856             ntStatus = STATUS_SUCCESS;
 857         }
 858         else
 859         {
 860
 861             pWorkItem = AFSRemoveIOWorkItem();
 862
 863             if( pWorkItem == NULL)
 864             {
 865
 866                 ntStatus = KeWaitForSingleObject( &pLibraryDevExt->Specific.Library.IOWorkerQueueHasItems,
 867                                                   Executive,
 868                                                   KernelMode,
 869                                                   FALSE,
 870                                                   NULL);
 871             }
 872             else
 873             {
 874
 875                 freeWorkItem = TRUE;
 876
 877                 //
 878                 // Switch on the type of work item to process
 879                 //
 880
 881                 switch( pWorkItem->RequestType)
 882                 {
 883
 884                     case AFS_WORK_START_IOS:
 885                     {
 886
 887                         pRdrDevExt = (AFSDeviceExt *)AFSRDRDeviceObject->DeviceExtension;
 888
 889                         //
 890                         // The final status is in the gather io
 891                         //
 892
 893                         ntStatus = AFSStartIos( pWorkItem->Specific.CacheAccess.CacheFileObject,
 894                                                 pWorkItem->Specific.CacheAccess.FunctionCode,
 895                                                 pWorkItem->Specific.CacheAccess.RequestFlags,
 896                                                 pWorkItem->Specific.CacheAccess.IoRuns,
 897                                                 pWorkItem->Specific.CacheAccess.RunCount,
 898                                                 pWorkItem->Specific.CacheAccess.GatherIo);
 899
 900                         //
 901                         // Regardless of the status we we do the complete - there may
 902                         // be IOs in flight
 903                         // Decrement the count - setting the event if we were told
 904                         // to. This may trigger completion.
 905                         //
 906
 907                         AFSCompleteIo( pWorkItem->Specific.CacheAccess.GatherIo, ntStatus );
 908
 909                         freeWorkItem = TRUE;
 910
 911                         break;
 912                     }
 913
 914                     default:
 915
 916                         AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
 917                                       AFS_TRACE_LEVEL_ERROR,
 918                                       "AFSWorkerThread Unknown request type %d\n", pWorkItem->RequestType);
 919
 920                         break;
 921                 }
 922
 923                 if( freeWorkItem)
 924                 {
 925
 926                     ExFreePoolWithTag( pWorkItem, AFS_WORK_ITEM_TAG);
 927                 }
 928
 929                 ntStatus = STATUS_SUCCESS;
 930             }
 931         }
 932     } // worker thread loop
 933
 934     ClearFlag( pPoolContext->State, AFS_WORKER_INITIALIZED);
 935
 936     // Wake up another IOWorker so they too can exit
 937
 938     KeSetEvent( &pLibraryDevExt->Specific.Library.IOWorkerQueueHasItems,
 939                 0,
 940                 FALSE);
 941
 942     PsTerminateSystemThread( 0);
 943
 944     return;
 945 }
 946
 947 void
 948 AFSPrimaryVolumeWorkerThread( IN PVOID Context)
 949 {
 950
 951     NTSTATUS ntStatus = STATUS_SUCCESS;
 952     AFSWorkQueueContext *pPoolContext = (AFSWorkQueueContext *)&AFSGlobalRoot->VolumeWorkerContext;
 953     AFSDeviceExt *pControlDeviceExt = NULL;
 954     AFSDeviceExt *pRDRDeviceExt = NULL;
 955     LARGE_INTEGER DueTime;
 956     LONG TimeOut;
 957     KTIMER Timer;
 958     BOOLEAN bFoundOpenEntry = FALSE;
 959     AFSObjectInfoCB *pCurrentObject = NULL, *pNextObject = NULL, *pCurrentChildObject = NULL;
 960     AFSDirectoryCB *pCurrentDirEntry = NULL, *pNextDirEntry = NULL;
 961     BOOLEAN bReleaseVolumeLock = FALSE;
 962     AFSVolumeCB *pVolumeCB = NULL, *pNextVolume = NULL;
 963     AFSFcb *pFcb = NULL;
 964     LONG lFileType;
 965     LARGE_INTEGER liCurrentTime;
 966     BOOLEAN bVolumeObject = FALSE;
 967     LONG lCount;
 968
 969     pControlDeviceExt = (AFSDeviceExt *)AFSControlDeviceObject->DeviceExtension;
 970
 971     pRDRDeviceExt = (AFSDeviceExt *)AFSRDRDeviceObject->DeviceExtension;
 972
 973     AFSDbgLogMsg( AFS_SUBSYSTEM_CLEANUP_PROCESSING,
 974                   AFS_TRACE_LEVEL_VERBOSE,
 975                   "AFSPrimaryVolumeWorkerThread Initialized\n");
 976
 977     //
 978     // Initialize the timer for the worker thread
 979     //
 980
 981     DueTime.QuadPart = -(5000);
 982
 983     TimeOut = 5000;
 984
 985     KeInitializeTimerEx( &Timer,
 986                          SynchronizationTimer);
 987
 988     KeSetTimerEx( &Timer,
 989                   DueTime,
 990                   TimeOut,
 991                   NULL);
 992
 993     //
 994     // Indicate that we are initialized and ready
 995     //
 996
 997     KeSetEvent( &pPoolContext->WorkerThreadReady,
 998                 0,
 999                 FALSE);
1000
1001     //
1002     // Indicate we are initialized
1003     //
1004
1005     SetFlag( pPoolContext->State, AFS_WORKER_INITIALIZED);
1006
1007     while( BooleanFlagOn( pPoolContext->State, AFS_WORKER_PROCESS_REQUESTS))
1008     {
1009
1010         KeWaitForSingleObject( &Timer,
1011                                Executive,
1012                                KernelMode,
1013                                FALSE,
1014                                NULL);
1015
1016         //
1017         // This is the primary volume worker so it will traverse the volume list
1018         // looking for cleanup or volumes requiring private workers
1019         //
1020
1021         AFSAcquireShared( &pRDRDeviceExt->Specific.RDR.VolumeListLock,
1022                           TRUE);
1023
1024         pVolumeCB = pRDRDeviceExt->Specific.RDR.VolumeListHead;
1025
1026         while( pVolumeCB != NULL)
1027         {
1028
1029             if( pVolumeCB == AFSGlobalRoot ||
1030                 !AFSAcquireExcl( pVolumeCB->VolumeLock,
1031                                  FALSE))
1032             {
1033
1034                 pVolumeCB = (AFSVolumeCB *)pVolumeCB->ListEntry.fLink;
1035
1036                 continue;
1037             }
1038
1039             if( pVolumeCB->ObjectInfoListHead == NULL)
1040             {
1041
1042                 AFSReleaseResource( pVolumeCB->VolumeLock);
1043
1044                 AFSReleaseResource( &pRDRDeviceExt->Specific.RDR.VolumeListLock);
1045
1046                 AFSAcquireExcl( pRDRDeviceExt->Specific.RDR.VolumeTree.TreeLock,
1047                                 TRUE);
1048
1049                 AFSAcquireExcl( &pRDRDeviceExt->Specific.RDR.VolumeListLock,
1050                                 TRUE);
1051
1052                 if( !AFSAcquireExcl( pVolumeCB->VolumeLock,
1053                                      FALSE))
1054                 {
1055
1056                     AFSConvertToShared( &pRDRDeviceExt->Specific.RDR.VolumeListLock);
1057
1058                     AFSReleaseResource( pRDRDeviceExt->Specific.RDR.VolumeTree.TreeLock);
1059
1060                     pVolumeCB = (AFSVolumeCB *)pVolumeCB->ListEntry.fLink;
1061
1062                     continue;
1063                 }
1064
1065                 KeQueryTickCount( &liCurrentTime);
1066
1067                 pNextVolume = (AFSVolumeCB *)pVolumeCB->ListEntry.fLink;
1068
1069                 if( pVolumeCB->ObjectInfoListHead == NULL &&
1070                     pVolumeCB->DirectoryCB->OpenReferenceCount == 0 &&
1071                     pVolumeCB->VolumeReferenceCount == 1 &&
1072                     ( pVolumeCB->RootFcb == NULL ||
1073                       pVolumeCB->RootFcb->OpenReferenceCount == 0) &&
1074                     pVolumeCB->ObjectInformation.ObjectReferenceCount <= 0)
1075                 {
1076
1077                     if( pVolumeCB->RootFcb != NULL)
1078                     {
1079
1080                         AFSRemoveRootFcb( pVolumeCB->RootFcb);
1081                     }
1082
1083                     AFSRemoveVolume( pVolumeCB);
1084                 }
1085                 else
1086                 {
1087
1088                     AFSReleaseResource( pVolumeCB->VolumeLock);
1089                 }
1090
1091                 AFSConvertToShared( &pRDRDeviceExt->Specific.RDR.VolumeListLock);
1092
1093                 AFSReleaseResource( pRDRDeviceExt->Specific.RDR.VolumeTree.TreeLock);
1094
1095                 pVolumeCB = pNextVolume;
1096
1097                 continue;
1098             }
1099
1100             //
1101             // Don't need this lock anymore now that we have a volume cb to work with
1102             //
1103
1104             AFSReleaseResource( &pRDRDeviceExt->Specific.RDR.VolumeListLock);
1105
1106             //
1107             // For now we only need the volume lock shared
1108             //
1109
1110             AFSConvertToShared( pVolumeCB->VolumeLock);
1111
1112             if( AFSAcquireShared( pVolumeCB->ObjectInfoTree.TreeLock,
1113                                   FALSE))
1114             {
1115
1116                 pCurrentObject = pVolumeCB->ObjectInfoListHead;
1117
1118                 pNextObject = NULL;
1119
1120                 bReleaseVolumeLock = TRUE;
1121
1122                 while( pCurrentObject != NULL)
1123                 {
1124
1125                     if( pCurrentObject != &pVolumeCB->ObjectInformation)
1126                     {
1127
1128                         pNextObject = (AFSObjectInfoCB *)pCurrentObject->ListEntry.fLink;
1129
1130                         if( pNextObject == NULL &&
1131                             pVolumeCB != AFSGlobalRoot)  // Don't free up the root of the global
1132                         {
1133
1134                             pNextObject = &pVolumeCB->ObjectInformation;
1135                         }
1136
1137                         bVolumeObject = FALSE;
1138                     }
1139                     else
1140                     {
1141
1142                         pNextObject = NULL;
1143
1144                         bVolumeObject = TRUE;
1145                     }
1146
1147                     if( pCurrentObject->FileType == AFS_FILE_TYPE_DIRECTORY &&
1148                         !BooleanFlagOn( pRDRDeviceExt->DeviceFlags, AFS_DEVICE_FLAG_REDIRECTOR_SHUTDOWN))  // If we are in shutdown mode skip directories
1149                     {
1150
1151                         //
1152                         // If this object is deleted then remove it from the parent, if we can
1153                         //
1154
1155                         if( BooleanFlagOn( pCurrentObject->Flags, AFS_OBJECT_FLAGS_DELETED) &&
1156                             pCurrentObject->ObjectReferenceCount <= 0 &&
1157                             ( pCurrentObject->Fcb == NULL ||
1158                               pCurrentObject->Fcb->OpenReferenceCount == 0) &&
1159                             pCurrentObject->Specific.Directory.DirectoryNodeListHead == NULL &&
1160                             pCurrentObject->Specific.Directory.ChildOpenReferenceCount == 0)
1161                         {
1162
1163                             AFSReleaseResource( pVolumeCB->ObjectInfoTree.TreeLock);
1164
1165                             //
1166                             // Dropping the TreeLock permits the
1167                             // pCurrentObject->ObjectReferenceCount to change
1168                             //
1169
1170                             if( AFSAcquireExcl( pVolumeCB->ObjectInfoTree.TreeLock,
1171                                                 FALSE))
1172                             {
1173
1174                                 if ( pCurrentObject->ObjectReferenceCount <= 0)
1175                                 {
1176
1177                                     if( pCurrentObject->Fcb != NULL)
1178                                     {
1179
1180                                         AFSRemoveFcb( &pCurrentObject->Fcb);
1181                                     }
1182
1183                                     if( pCurrentObject->Specific.Directory.PIOCtlDirectoryCB != NULL)
1184                                     {
1185
1186                                         if( pCurrentObject->Specific.Directory.PIOCtlDirectoryCB->ObjectInformation->Fcb != NULL)
1187                                         {
1188
1189                                             AFSRemoveFcb( &pCurrentObject->Specific.Directory.PIOCtlDirectoryCB->ObjectInformation->Fcb);
1190                                         }
1191
1192                                         AFSDeleteObjectInfo( pCurrentObject->Specific.Directory.PIOCtlDirectoryCB->ObjectInformation);
1193
1194                                         ExDeleteResourceLite( &pCurrentChildObject->Specific.Directory.PIOCtlDirectoryCB->NonPaged->Lock);
1195
1196                                         AFSExFreePoolWithTag( pCurrentChildObject->Specific.Directory.PIOCtlDirectoryCB->NonPaged, AFS_DIR_ENTRY_NP_TAG);
1197
1198                                         AFSExFreePoolWithTag( pCurrentObject->Specific.Directory.PIOCtlDirectoryCB, AFS_DIR_ENTRY_TAG);
1199                                     }
1200
1201                                     AFSDbgLogMsg( AFS_SUBSYSTEM_CLEANUP_PROCESSING,
1202                                                   AFS_TRACE_LEVEL_VERBOSE,
1203                                                   "AFSPrimaryVolumeWorkerThread Deleting deleted object %08lX\n",
1204                                                   pCurrentObject);
1205
1206                                     AFSDeleteObjectInfo( pCurrentObject);
1207                                 }
1208
1209                                 AFSConvertToShared( pVolumeCB->ObjectInfoTree.TreeLock);
1210
1211                                 pCurrentObject = pNextObject;
1212
1213                                 continue;
1214                             }
1215                             else
1216                             {
1217
1218                                 bReleaseVolumeLock = FALSE;
1219
1220                                 break;
1221                             }
1222                         }
1223
1224                         if( pCurrentObject->Specific.Directory.ChildOpenReferenceCount > 0 ||
1225                             ( pCurrentObject->Fcb != NULL &&
1226                               pCurrentObject->Fcb->OpenReferenceCount > 0) ||
1227                             pCurrentObject->Specific.Directory.DirectoryNodeListHead == NULL)
1228                         {
1229
1230                             pCurrentObject = pNextObject;
1231
1232                             continue;
1233                         }
1234
1235                         if( !AFSAcquireShared( pCurrentObject->Specific.Directory.DirectoryNodeHdr.TreeLock,
1236                                                FALSE))
1237                         {
1238
1239                             pCurrentObject = pNextObject;
1240
1241                             continue;
1242                         }
1243
1244                         KeQueryTickCount( &liCurrentTime);
1245
1246                         pCurrentDirEntry = pCurrentObject->Specific.Directory.DirectoryNodeListHead;
1247
1248                         while( pCurrentDirEntry != NULL)
1249                         {
1250
1251                             if( pCurrentDirEntry->OpenReferenceCount > 0 ||
1252                                 ( pCurrentDirEntry->ObjectInformation->Fcb != NULL &&
1253                                   pCurrentDirEntry->ObjectInformation->Fcb->OpenReferenceCount > 0) ||
1254                                 liCurrentTime.QuadPart <= pCurrentDirEntry->ObjectInformation->LastAccessCount.QuadPart ||
1255                                 liCurrentTime.QuadPart - pCurrentDirEntry->ObjectInformation->LastAccessCount.QuadPart <
1256                                                                         pControlDeviceExt->Specific.Control.ObjectLifeTimeCount.QuadPart ||
1257                                 ( pCurrentDirEntry->ObjectInformation->FileType == AFS_FILE_TYPE_DIRECTORY &&
1258                                    ( pCurrentDirEntry->ObjectInformation->Specific.Directory.DirectoryNodeListHead != NULL ||
1259                                      pCurrentDirEntry->ObjectInformation->Specific.Directory.ChildOpenReferenceCount > 0)) ||
1260                                 ( pCurrentDirEntry->ObjectInformation->FileType == AFS_FILE_TYPE_FILE &&
1261                                   pCurrentDirEntry->ObjectInformation->Fcb != NULL &&
1262                                   pCurrentDirEntry->ObjectInformation->Fcb->Specific.File.ExtentsDirtyCount > 0))
1263                             {
1264
1265                                 break;
1266                             }
1267
1268                             pCurrentDirEntry = (AFSDirectoryCB *)pCurrentDirEntry->ListEntry.fLink;
1269                         }
1270
1271                         if( pCurrentDirEntry != NULL)
1272                         {
1273
1274                             AFSReleaseResource( pCurrentObject->Specific.Directory.DirectoryNodeHdr.TreeLock);
1275
1276                             pCurrentObject = pNextObject;
1277
1278                             continue;
1279                         }
1280
1281                         AFSReleaseResource( pCurrentObject->Specific.Directory.DirectoryNodeHdr.TreeLock);
1282
1283                         AFSReleaseResource( pVolumeCB->ObjectInfoTree.TreeLock);
1284
1285                         //
1286                         // Now acquire the locks excl
1287                         //
1288
1289                         if( AFSAcquireExcl( pCurrentObject->Specific.Directory.DirectoryNodeHdr.TreeLock,
1290                                             FALSE))
1291                         {
1292
1293                             if( AFSAcquireExcl( pVolumeCB->ObjectInfoTree.TreeLock,
1294                                                 FALSE))
1295                             {
1296
1297                                 if( pCurrentObject->Specific.Directory.ChildOpenReferenceCount > 0)
1298                                 {
1299
1300                                     AFSReleaseResource( pCurrentObject->Specific.Directory.DirectoryNodeHdr.TreeLock);
1301
1302                                     AFSConvertToShared( pVolumeCB->ObjectInfoTree.TreeLock);
1303
1304                                     pCurrentObject = pNextObject;
1305
1306                                     continue;
1307                                 }
1308
1309                                 KeQueryTickCount( &liCurrentTime);
1310
1311                                 pCurrentDirEntry = pCurrentObject->Specific.Directory.DirectoryNodeListHead;
1312
1313                                 while( pCurrentDirEntry != NULL)
1314                                 {
1315
1316                                     if( pCurrentDirEntry->OpenReferenceCount > 0 ||
1317                                         ( pCurrentDirEntry->ObjectInformation->Fcb != NULL &&
1318                                           pCurrentDirEntry->ObjectInformation->Fcb->OpenReferenceCount > 0) ||
1319                                         liCurrentTime.QuadPart <= pCurrentDirEntry->ObjectInformation->LastAccessCount.QuadPart ||
1320                                         liCurrentTime.QuadPart - pCurrentDirEntry->ObjectInformation->LastAccessCount.QuadPart <
1321                                                                                 pControlDeviceExt->Specific.Control.ObjectLifeTimeCount.QuadPart ||
1322                                         ( pCurrentDirEntry->ObjectInformation->FileType == AFS_FILE_TYPE_DIRECTORY &&
1323                                           ( pCurrentDirEntry->ObjectInformation->Specific.Directory.DirectoryNodeListHead != NULL ||
1324                                             pCurrentDirEntry->ObjectInformation->Specific.Directory.ChildOpenReferenceCount > 0)) ||
1325                                         ( pCurrentDirEntry->ObjectInformation->FileType == AFS_FILE_TYPE_FILE &&
1326                                           pCurrentDirEntry->ObjectInformation->Fcb != NULL &&
1327                                           pCurrentDirEntry->ObjectInformation->Fcb->Specific.File.ExtentsDirtyCount > 0))
1328                                     {
1329
1330                                         break;
1331                                     }
1332
1333                                     pCurrentDirEntry = (AFSDirectoryCB *)pCurrentDirEntry->ListEntry.fLink;
1334                                 }
1335
1336                                 if( pCurrentDirEntry != NULL)
1337                                 {
1338
1339                                     AFSReleaseResource( pCurrentObject->Specific.Directory.DirectoryNodeHdr.TreeLock);
1340
1341                                     AFSConvertToShared( pVolumeCB->ObjectInfoTree.TreeLock);
1342
1343                                     pCurrentObject = pNextObject;
1344
1345                                     continue;
1346                                 }
1347
1348                                 pCurrentDirEntry = pCurrentObject->Specific.Directory.DirectoryNodeListHead;
1349
1350                                 while( pCurrentDirEntry != NULL)
1351                                 {
1352
1353                                     pNextDirEntry = (AFSDirectoryCB *)pCurrentDirEntry->ListEntry.fLink;
1354
1355                                     pCurrentChildObject = pCurrentDirEntry->ObjectInformation;
1356
1357                                     pFcb = NULL;
1358
1359                                     AFSDbgLogMsg( AFS_SUBSYSTEM_CLEANUP_PROCESSING,
1360                                                   AFS_TRACE_LEVEL_VERBOSE,
1361                                                   "AFSPrimaryVolumeWorkerThread Deleting DE %wZ Object %08lX\n",
1362                                                   &pCurrentDirEntry->NameInformation.FileName,
1363                                                   pCurrentChildObject);
1364
1365                                     AFSDeleteDirEntry( pCurrentObject,
1366                                                        pCurrentDirEntry);
1367
1368                                     if( pCurrentChildObject->ObjectReferenceCount <= 0 &&
1369                                         pCurrentChildObject->Fcb != NULL &&
1370                                         pCurrentChildObject->FileType == AFS_FILE_TYPE_FILE)
1371                                     {
1372
1373                                         //
1374                                         // We must not hold pVolumeCB->ObjectInfoTree.TreeLock exclusive
1375                                         // across an AFSCleanupFcb call since it can deadlock with an
1376                                         // invalidation call from the service.
1377                                         //
1378
1379                                         AFSReleaseResource( pVolumeCB->ObjectInfoTree.TreeLock);
1380
1381                                         //
1382                                         // Dropping the TreeLock permits the
1383                                         // pCurrentObject->ObjectReferenceCount to change
1384                                         //
1385
1386                                         AFSCleanupFcb( pCurrentChildObject->Fcb,
1387                                                        TRUE);
1388
1389                                         AFSAcquireExcl( pVolumeCB->ObjectInfoTree.TreeLock,
1390                                                         TRUE);
1391                                     }
1392
1393                                     if( pCurrentChildObject->ObjectReferenceCount <= 0 &&
1394                                         ( pCurrentChildObject->Fcb == NULL ||
1395                                           pCurrentChildObject->Fcb->OpenReferenceCount == 0 &&
1396                                           pCurrentChildObject->Fcb->Specific.File.ExtentCount == 0))
1397                                     {
1398
1399                                         if( pCurrentChildObject->Fcb != NULL)
1400                                         {
1401
1402                                             AFSRemoveFcb( &pCurrentChildObject->Fcb);
1403                                         }
1404
1405                                         if( pCurrentChildObject->FileType == AFS_FILE_TYPE_DIRECTORY &&
1406                                             pCurrentChildObject->Specific.Directory.PIOCtlDirectoryCB != NULL)
1407                                         {
1408
1409                                             if( pCurrentChildObject->Specific.Directory.PIOCtlDirectoryCB->ObjectInformation->Fcb != NULL)
1410                                             {
1411
1412                                                 AFSRemoveFcb( &pCurrentChildObject->Specific.Directory.PIOCtlDirectoryCB->ObjectInformation->Fcb);
1413                                             }
1414
1415                                             AFSDeleteObjectInfo( pCurrentChildObject->Specific.Directory.PIOCtlDirectoryCB->ObjectInformation);
1416
1417                                             ExDeleteResourceLite( &pCurrentChildObject->Specific.Directory.PIOCtlDirectoryCB->NonPaged->Lock);
1418
1419                                             AFSExFreePoolWithTag( pCurrentChildObject->Specific.Directory.PIOCtlDirectoryCB->NonPaged, AFS_DIR_ENTRY_NP_TAG);
1420
1421                                             AFSExFreePoolWithTag( pCurrentChildObject->Specific.Directory.PIOCtlDirectoryCB, AFS_DIR_ENTRY_TAG);
1422                                         }
1423
1424                                         AFSDbgLogMsg( AFS_SUBSYSTEM_CLEANUP_PROCESSING,
1425                                                       AFS_TRACE_LEVEL_VERBOSE,
1426                                                       "AFSPrimaryVolumeWorkerThread Deleting object %08lX\n",
1427                                                       pCurrentChildObject);
1428
1429                                         AFSDeleteObjectInfo( pCurrentChildObject);
1430                                     }
1431
1432                                     pCurrentDirEntry = pNextDirEntry;
1433
1434                                 }
1435
1436                                 pCurrentObject->Specific.Directory.DirectoryNodeListHead = NULL;
1437
1438                                 pCurrentObject->Specific.Directory.DirectoryNodeListTail = NULL;
1439
1440                                 pCurrentObject->Specific.Directory.ShortNameTree = NULL;
1441
1442                                 pCurrentObject->Specific.Directory.DirectoryNodeHdr.CaseSensitiveTreeHead = NULL;
1443
1444                                 pCurrentObject->Specific.Directory.DirectoryNodeHdr.CaseInsensitiveTreeHead = NULL;
1445
1446                                 pCurrentObject->Specific.Directory.DirectoryNodeCount = 0;
1447
1448                                 AFSDbgLogMsg( AFS_SUBSYSTEM_DIR_NODE_COUNT,
1449                                               AFS_TRACE_LEVEL_VERBOSE,
1450                                               "AFSPrimaryVolumeWorkerThread Reset count to 0 on parent FID %08lX-%08lX-%08lX-%08lX\n",
1451                                               pCurrentObject->FileId.Cell,
1452                                               pCurrentObject->FileId.Volume,
1453                                               pCurrentObject->FileId.Vnode,
1454                                               pCurrentObject->FileId.Unique);
1455
1456                                 //
1457                                 // Clear our enumerated flag on this object so we retrieve info again on next access
1458                                 //
1459
1460                                 ClearFlag( pCurrentObject->Flags, AFS_OBJECT_FLAGS_DIRECTORY_ENUMERATED);
1461
1462                                 AFSReleaseResource( pCurrentObject->Specific.Directory.DirectoryNodeHdr.TreeLock);
1463
1464                                 AFSConvertToShared( pVolumeCB->ObjectInfoTree.TreeLock);
1465                             }
1466                             else
1467                             {
1468
1469                                 AFSReleaseResource( pCurrentObject->Specific.Directory.DirectoryNodeHdr.TreeLock);
1470
1471                                 bReleaseVolumeLock = FALSE;
1472
1473                                 break;
1474                             }
1475                         }
1476                         else
1477                         {
1478
1479                             //
1480                             // Try to grab the volume lock again ... no problem if we don't
1481                             //
1482
1483                             if( !AFSAcquireExcl( pVolumeCB->ObjectInfoTree.TreeLock,
1484                                                  FALSE))
1485                             {
1486
1487                                 bReleaseVolumeLock = FALSE;
1488
1489                                 break;
1490                             }
1491                         }
1492
1493                         if( pCurrentObject != &pVolumeCB->ObjectInformation)
1494                         {
1495
1496                             pCurrentObject = (AFSObjectInfoCB *)pCurrentObject->ListEntry.fLink;
1497
1498                             if( pCurrentObject == NULL &&
1499                                 pVolumeCB != AFSGlobalRoot)
1500                             {
1501
1502                                 pCurrentObject = &pVolumeCB->ObjectInformation;
1503                             }
1504                         }
1505                         else
1506                         {
1507
1508                             pCurrentObject = NULL;
1509                         }
1510
1511                         continue;
1512                     }
1513                     else if( pCurrentObject->FileType == AFS_FILE_TYPE_FILE)
1514                     {
1515
1516                         AFSReleaseResource( pVolumeCB->ObjectInfoTree.TreeLock);
1517
1518                         if( pCurrentObject->Fcb != NULL)
1519                         {
1520
1521                             //
1522                             // Dropping the TreeLock permits the
1523                             // pCurrentObject->ObjectReferenceCount to change
1524                             //
1525
1526                             AFSCleanupFcb( pCurrentObject->Fcb,
1527                                            TRUE);
1528                         }
1529
1530                         if( !AFSAcquireExcl( pVolumeCB->ObjectInfoTree.TreeLock,
1531                                              FALSE))
1532                         {
1533
1534                             bReleaseVolumeLock = FALSE;
1535
1536                             break;
1537                         }
1538
1539                         if( BooleanFlagOn( pCurrentObject->Flags, AFS_OBJECT_FLAGS_DELETED) &&
1540                             pCurrentObject->ObjectReferenceCount <= 0 &&
1541                             ( pCurrentObject->Fcb == NULL ||
1542                               pCurrentObject->Fcb->OpenReferenceCount == 0 &&
1543                               pCurrentObject->Fcb->Specific.File.ExtentCount == 0))
1544                         {
1545
1546                             if( pCurrentObject->Fcb != NULL)
1547                             {
1548
1549                                 AFSRemoveFcb( &pCurrentObject->Fcb);
1550                             }
1551
1552                             AFSDeleteObjectInfo( pCurrentObject);
1553                         }
1554
1555                         AFSConvertToShared( pVolumeCB->ObjectInfoTree.TreeLock);
1556
1557                         pCurrentObject = pNextObject;
1558
1559                         continue;
1560                     }
1561
1562                     pCurrentObject = pNextObject;
1563                 }
1564
1565                 if( bReleaseVolumeLock)
1566                 {
1567
1568                     AFSReleaseResource( pVolumeCB->ObjectInfoTree.TreeLock);
1569                 }
1570             }
1571
1572             //
1573             // Next volume cb
1574             //
1575
1576             AFSReleaseResource( pVolumeCB->VolumeLock);
1577
1578             AFSAcquireShared( &pRDRDeviceExt->Specific.RDR.VolumeListLock,
1579                               TRUE);
1580
1581             pVolumeCB = (AFSVolumeCB *)pVolumeCB->ListEntry.fLink;
1582         }
1583
1584         AFSReleaseResource( &pRDRDeviceExt->Specific.RDR.VolumeListLock);
1585
1586     } // worker thread loop
1587
1588     KeCancelTimer( &Timer);
1589
1590     AFSDbgLogMsg( AFS_SUBSYSTEM_CLEANUP_PROCESSING,
1591                   AFS_TRACE_LEVEL_VERBOSE,
1592                   "AFSPrimaryVolumeWorkerThread Exiting\n");
1593
1594     lCount = InterlockedDecrement( &pControlDeviceExt->Specific.Control.VolumeWorkerThreadCount);
1595
1596     if( lCount == 0)
1597     {
1598
1599         KeSetEvent( &pControlDeviceExt->Specific.Control.VolumeWorkerCloseEvent,
1600                     0,
1601                     FALSE);
1602     }
1603
1604     PsTerminateSystemThread( 0);
1605
1606     return;
1607 }
1608
1609 void
1610 AFSVolumeWorkerThread( IN PVOID Context)
1611 {
1612
1613     NTSTATUS ntStatus = STATUS_SUCCESS;
1614     AFSVolumeCB *pVolumeCB = (AFSVolumeCB * )Context;
1615     AFSWorkQueueContext *pPoolContext = (AFSWorkQueueContext *)&pVolumeCB->VolumeWorkerContext;
1616     AFSDeviceExt *pControlDeviceExt = NULL;
1617     AFSDeviceExt *pRDRDeviceExt = NULL;
1618     BOOLEAN exitThread = FALSE;
1619     LARGE_INTEGER DueTime;
1620     LONG TimeOut;
1621     KTIMER Timer;
1622     LONG lCount;
1623
1624     pControlDeviceExt = (AFSDeviceExt *)AFSControlDeviceObject->DeviceExtension;
1625
1626     pRDRDeviceExt = (AFSDeviceExt *)AFSRDRDeviceObject->DeviceExtension;
1627
1628     //
1629     // Initialize the timer for the worker thread
1630     //
1631
1632     DueTime.QuadPart = -(5000);
1633
1634     TimeOut = 5000;
1635
1636     KeInitializeTimerEx( &Timer,
1637                          SynchronizationTimer);
1638
1639     KeSetTimerEx( &Timer,
1640                   DueTime,
1641                   TimeOut,
1642                   NULL);
1643
1644     //
1645     // Indicate that we are initialized and ready
1646     //
1647
1648     KeSetEvent( &pPoolContext->WorkerThreadReady,
1649                 0,
1650                 FALSE);
1651
1652     //
1653     // Indicate we are initialized
1654     //
1655
1656     SetFlag( pPoolContext->State, AFS_WORKER_INITIALIZED);
1657
1658     while( BooleanFlagOn( pPoolContext->State, AFS_WORKER_PROCESS_REQUESTS))
1659     {
1660
1661         ntStatus = KeWaitForSingleObject( &Timer,
1662                                           Executive,
1663                                           KernelMode,
1664                                           FALSE,
1665                                           NULL);
1666
1667         if( !NT_SUCCESS( ntStatus))
1668         {
1669
1670             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
1671                           AFS_TRACE_LEVEL_ERROR,
1672                           "AFSVolumeWorkerThread Wait for queue items failed Status %08lX\n", ntStatus);
1673         }
1674         else
1675         {
1676
1677             //
1678             // If we are in shutdown mode and the dirty flag is clear then get out now
1679             //
1680
1681             if( BooleanFlagOn( pRDRDeviceExt->DeviceFlags, AFS_DEVICE_FLAG_REDIRECTOR_SHUTDOWN))
1682             {
1683
1684                 break;
1685             }
1686         }
1687     } // worker thread loop
1688
1689     KeCancelTimer( &Timer);
1690
1691     lCount = InterlockedDecrement( &pControlDeviceExt->Specific.Control.VolumeWorkerThreadCount);
1692
1693     if( lCount == 0)
1694     {
1695
1696         KeSetEvent( &pControlDeviceExt->Specific.Control.VolumeWorkerCloseEvent,
1697                     0,
1698                     FALSE);
1699     }
1700
1701     PsTerminateSystemThread( 0);
1702
1703     return;
1704 }
1705
1706 NTSTATUS
1707 AFSInsertWorkitem( IN AFSWorkItem *WorkItem)
1708 {
1709
1710     NTSTATUS ntStatus = STATUS_SUCCESS;
1711     AFSDeviceExt *pDevExt = NULL;
1712     LONG lCount;
1713
1714     pDevExt = (AFSDeviceExt *)AFSLibraryDeviceObject->DeviceExtension;
1715
1716     AFSDbgLogMsg( AFS_SUBSYSTEM_LOCK_PROCESSING,
1717                   AFS_TRACE_LEVEL_VERBOSE,
1718                   "AFSInsertWorkitem Acquiring Control QueueLock lock %08lX EXCL %08lX\n",
1719                   &pDevExt->Specific.Library.QueueLock,
1720                   PsGetCurrentThread());
1721
1722     AFSAcquireExcl( &pDevExt->Specific.Library.QueueLock,
1723                     TRUE);
1724
1725     lCount = InterlockedIncrement( &pDevExt->Specific.Library.QueueItemCount);
1726
1727     AFSDbgLogMsg( AFS_SUBSYSTEM_WORKER_PROCESSING,
1728                   AFS_TRACE_LEVEL_VERBOSE,
1729                   "AFSInsertWorkitem Inserting work item %08lX Count %08lX\n",
1730                   WorkItem,
1731                   lCount);
1732
1733     if( pDevExt->Specific.Library.QueueTail != NULL) // queue already has nodes
1734     {
1735
1736         pDevExt->Specific.Library.QueueTail->next = WorkItem;
1737     }
1738     else // first node
1739     {
1740
1741         pDevExt->Specific.Library.QueueHead = WorkItem;
1742     }
1743
1744     WorkItem->next = NULL;
1745     pDevExt->Specific.Library.QueueTail = WorkItem;
1746
1747     // indicate that the queue has nodes
1748     KeSetEvent( &(pDevExt->Specific.Library.WorkerQueueHasItems),
1749                 0,
1750                 FALSE);
1751
1752     AFSReleaseResource( &pDevExt->Specific.Library.QueueLock);
1753
1754     return ntStatus;
1755 }
1756
1757 NTSTATUS
1758 AFSInsertIOWorkitem( IN AFSWorkItem *WorkItem)
1759 {
1760
1761     NTSTATUS ntStatus = STATUS_SUCCESS;
1762     AFSDeviceExt *pDevExt = NULL;
1763     LONG lCount;
1764
1765     pDevExt = (AFSDeviceExt *)AFSLibraryDeviceObject->DeviceExtension;
1766
1767     AFSDbgLogMsg( AFS_SUBSYSTEM_LOCK_PROCESSING,
1768                   AFS_TRACE_LEVEL_VERBOSE,
1769                   "AFSInsertIOWorkitem Acquiring Control QueueLock lock %08lX EXCL %08lX\n",
1770                   &pDevExt->Specific.Library.IOQueueLock,
1771                   PsGetCurrentThread());
1772
1773     AFSAcquireExcl( &pDevExt->Specific.Library.IOQueueLock,
1774                     TRUE);
1775
1776     lCount = InterlockedIncrement( &pDevExt->Specific.Library.IOQueueItemCount);
1777
1778     AFSDbgLogMsg( AFS_SUBSYSTEM_WORKER_PROCESSING,
1779                   AFS_TRACE_LEVEL_VERBOSE,
1780                   "AFSInsertWorkitem Inserting IO work item %08lX Count %08lX\n",
1781                   WorkItem,
1782                   lCount);
1783
1784     if( pDevExt->Specific.Library.IOQueueTail != NULL) // queue already has nodes
1785     {
1786
1787         pDevExt->Specific.Library.IOQueueTail->next = WorkItem;
1788     }
1789     else // first node
1790     {
1791
1792         pDevExt->Specific.Library.IOQueueHead = WorkItem;
1793     }
1794
1795     WorkItem->next = NULL;
1796     pDevExt->Specific.Library.IOQueueTail = WorkItem;
1797
1798     // indicate that the queue has nodes
1799     KeSetEvent( &(pDevExt->Specific.Library.IOWorkerQueueHasItems),
1800                 0,
1801                 FALSE);
1802
1803     AFSReleaseResource( &pDevExt->Specific.Library.IOQueueLock);
1804
1805     return ntStatus;
1806 }
1807
1808 NTSTATUS
1809 AFSInsertWorkitemAtHead( IN AFSWorkItem *WorkItem)
1810 {
1811
1812     NTSTATUS ntStatus = STATUS_SUCCESS;
1813     AFSDeviceExt *pDevExt = NULL;
1814     LONG lCount;
1815
1816     pDevExt = (AFSDeviceExt *)AFSLibraryDeviceObject->DeviceExtension;
1817
1818     AFSDbgLogMsg( AFS_SUBSYSTEM_LOCK_PROCESSING,
1819                   AFS_TRACE_LEVEL_VERBOSE,
1820                   "AFSInsertWorkitemAtHead Acquiring Control QueueLock lock %08lX EXCL %08lX\n",
1821                   &pDevExt->Specific.Library.QueueLock,
1822                   PsGetCurrentThread());
1823
1824     AFSAcquireExcl( &pDevExt->Specific.Library.QueueLock,
1825                     TRUE);
1826
1827     WorkItem->next = pDevExt->Specific.Library.QueueHead;
1828
1829     pDevExt->Specific.Library.QueueHead = WorkItem;
1830
1831     lCount = InterlockedIncrement( &pDevExt->Specific.Library.QueueItemCount);
1832
1833     AFSDbgLogMsg( AFS_SUBSYSTEM_WORKER_PROCESSING,
1834                   AFS_TRACE_LEVEL_VERBOSE,
1835                   "AFSInsertWorkitemAtHead Inserting work item %08lX Count %08lX\n",
1836                   WorkItem,
1837                   lCount);
1838
1839     //
1840     // indicate that the queue has nodes
1841     //
1842
1843     KeSetEvent( &(pDevExt->Specific.Library.WorkerQueueHasItems),
1844                 0,
1845                 FALSE);
1846
1847     AFSReleaseResource( &pDevExt->Specific.Library.QueueLock);
1848
1849     return ntStatus;
1850 }
1851
1852 AFSWorkItem *
1853 AFSRemoveWorkItem()
1854 {
1855
1856     NTSTATUS ntStatus = STATUS_SUCCESS;
1857     AFSWorkItem        *pWorkItem = NULL;
1858     AFSDeviceExt *pDevExt = NULL;
1859     LONG lCount;
1860
1861     pDevExt = (AFSDeviceExt *)AFSLibraryDeviceObject->DeviceExtension;
1862
1863     AFSDbgLogMsg( AFS_SUBSYSTEM_LOCK_PROCESSING,
1864                   AFS_TRACE_LEVEL_VERBOSE,
1865                   "AFSRemoveWorkItem Acquiring Control QueueLock lock %08lX EXCL %08lX\n",
1866                   &pDevExt->Specific.Library.QueueLock,
1867                   PsGetCurrentThread());
1868
1869     AFSAcquireExcl( &pDevExt->Specific.Library.QueueLock,
1870                     TRUE);
1871
1872     if( pDevExt->Specific.Library.QueueHead != NULL) // queue has nodes
1873     {
1874
1875         pWorkItem = pDevExt->Specific.Library.QueueHead;
1876
1877         lCount = InterlockedDecrement( &pDevExt->Specific.Library.QueueItemCount);
1878
1879         AFSDbgLogMsg( AFS_SUBSYSTEM_WORKER_PROCESSING,
1880                       AFS_TRACE_LEVEL_VERBOSE,
1881                       "AFSRemoveWorkItem Removing work item %08lX Count %08lX Thread %08lX\n",
1882                       pWorkItem,
1883                       lCount,
1884                       PsGetCurrentThreadId());
1885
1886         pDevExt->Specific.Library.QueueHead = pDevExt->Specific.Library.QueueHead->next;
1887
1888         if( pDevExt->Specific.Library.QueueHead == NULL) // if queue just became empty
1889         {
1890
1891             pDevExt->Specific.Library.QueueTail = NULL;
1892         }
1893         else
1894         {
1895
1896             //
1897             // Wake up another worker
1898             //
1899
1900             KeSetEvent( &(pDevExt->Specific.Library.WorkerQueueHasItems),
1901                         0,
1902                         FALSE);
1903         }
1904     }
1905
1906     AFSReleaseResource( &pDevExt->Specific.Library.QueueLock);
1907
1908     return pWorkItem;
1909 }
1910
1911 AFSWorkItem *
1912 AFSRemoveIOWorkItem()
1913 {
1914
1915     NTSTATUS ntStatus = STATUS_SUCCESS;
1916     AFSWorkItem        *pWorkItem = NULL;
1917     AFSDeviceExt *pDevExt = NULL;
1918     LONG lCount;
1919
1920     pDevExt = (AFSDeviceExt *)AFSLibraryDeviceObject->DeviceExtension;
1921
1922     AFSDbgLogMsg( AFS_SUBSYSTEM_LOCK_PROCESSING,
1923                   AFS_TRACE_LEVEL_VERBOSE,
1924                   "AFSRemoveIOWorkItem Acquiring Control QueueLock lock %08lX EXCL %08lX\n",
1925                   &pDevExt->Specific.Library.IOQueueLock,
1926                   PsGetCurrentThread());
1927
1928     AFSAcquireExcl( &pDevExt->Specific.Library.IOQueueLock,
1929                     TRUE);
1930
1931     if( pDevExt->Specific.Library.IOQueueHead != NULL) // queue has nodes
1932     {
1933
1934         pWorkItem = pDevExt->Specific.Library.IOQueueHead;
1935
1936         lCount = InterlockedDecrement( &pDevExt->Specific.Library.IOQueueItemCount);
1937
1938         AFSDbgLogMsg( AFS_SUBSYSTEM_WORKER_PROCESSING,
1939                       AFS_TRACE_LEVEL_VERBOSE,
1940                       "AFSRemoveWorkItem Removing work item %08lX Count %08lX Thread %08lX\n",
1941                       pWorkItem,
1942                       lCount,
1943                       PsGetCurrentThreadId());
1944
1945         pDevExt->Specific.Library.IOQueueHead = pDevExt->Specific.Library.IOQueueHead->next;
1946
1947         if( pDevExt->Specific.Library.IOQueueHead == NULL) // if queue just became empty
1948         {
1949
1950             pDevExt->Specific.Library.IOQueueTail = NULL;
1951         }
1952         else
1953         {
1954
1955             //
1956             // Wake up another worker
1957             //
1958
1959             KeSetEvent( &(pDevExt->Specific.Library.IOWorkerQueueHasItems),
1960                         0,
1961                         FALSE);
1962         }
1963     }
1964
1965     AFSReleaseResource( &pDevExt->Specific.Library.IOQueueLock);
1966
1967     return pWorkItem;
1968 }
1969
1970 NTSTATUS
1971 AFSQueueWorkerRequest( IN AFSWorkItem *WorkItem)
1972 {
1973
1974     NTSTATUS ntStatus = STATUS_SUCCESS;
1975     AFSDeviceExt *pDevExt = NULL;
1976     BOOLEAN bWait = BooleanFlagOn( WorkItem->RequestFlags, AFS_SYNCHRONOUS_REQUEST);
1977
1978     //
1979     // Submit the work item to the worker
1980     //
1981
1982     ntStatus = AFSInsertWorkitem( WorkItem);
1983
1984     if( bWait)
1985     {
1986
1987         //
1988         // Sync request so block on the work item event
1989         //
1990
1991         ntStatus = KeWaitForSingleObject( &WorkItem->Event,
1992                                           Executive,
1993                                           KernelMode,
1994                                           FALSE,
1995                                           NULL);
1996     }
1997
1998     return ntStatus;
1999 }
2000
2001 NTSTATUS
2002 AFSQueueIOWorkerRequest( IN AFSWorkItem *WorkItem)
2003 {
2004
2005     NTSTATUS ntStatus = STATUS_SUCCESS;
2006     AFSDeviceExt *pDevExt = NULL;
2007     BOOLEAN bWait = BooleanFlagOn( WorkItem->RequestFlags, AFS_SYNCHRONOUS_REQUEST);
2008
2009     //
2010     // Submit the work item to the worker
2011     //
2012
2013     ntStatus = AFSInsertIOWorkitem( WorkItem);
2014
2015     if( bWait)
2016     {
2017
2018         //
2019         // Sync request so block on the work item event
2020         //
2021
2022         ntStatus = KeWaitForSingleObject( &WorkItem->Event,
2023                                           Executive,
2024                                           KernelMode,
2025                                           FALSE,
2026                                           NULL);
2027     }
2028
2029     return ntStatus;
2030 }
2031
2032 NTSTATUS
2033 AFSQueueWorkerRequestAtHead( IN AFSWorkItem *WorkItem)
2034 {
2035
2036     NTSTATUS ntStatus = STATUS_SUCCESS;
2037     AFSDeviceExt *pDevExt = NULL;
2038     BOOLEAN bWait = BooleanFlagOn( WorkItem->RequestFlags, AFS_SYNCHRONOUS_REQUEST);
2039
2040     //
2041     // Submit the work item to the worker
2042     //
2043
2044     ntStatus = AFSInsertWorkitemAtHead( WorkItem);
2045
2046     if( bWait)
2047     {
2048
2049         //
2050         // Sync request so block on the work item event
2051         //
2052
2053         ntStatus = KeWaitForSingleObject( &WorkItem->Event,
2054                                           Executive,
2055                                           KernelMode,
2056                                           FALSE,
2057                                           NULL);
2058     }
2059
2060     return ntStatus;
2061 }
2062
2063 NTSTATUS
2064 AFSQueueFlushExtents( IN AFSFcb *Fcb,
2065                       IN GUID *AuthGroup)
2066 {
2067
2068     NTSTATUS ntStatus = STATUS_SUCCESS;
2069     AFSDeviceExt *pRDRDeviceExt = (AFSDeviceExt *)AFSRDRDeviceObject->DeviceExtension;
2070     AFSWorkItem *pWorkItem = NULL;
2071     LONG lCount;
2072
2073     __try
2074     {
2075
2076         AFSDbgLogMsg( AFS_SUBSYSTEM_WORKER_PROCESSING,
2077                       AFS_TRACE_LEVEL_VERBOSE,
2078                       "AFSQueueFlushExtents Queuing request for FID %08lX-%08lX-%08lX-%08lX\n",
2079                       Fcb->ObjectInformation->FileId.Cell,
2080                       Fcb->ObjectInformation->FileId.Volume,
2081                       Fcb->ObjectInformation->FileId.Vnode,
2082                       Fcb->ObjectInformation->FileId.Unique);
2083
2084         //
2085         // Increment our flush count here just to keep the number of items in the
2086         // queue down. We'll decrement it just below.
2087         //
2088
2089         lCount = InterlockedIncrement( &Fcb->Specific.File.QueuedFlushCount);
2090
2091         if( lCount > 3)
2092         {
2093
2094             AFSDbgLogMsg( AFS_SUBSYSTEM_WORKER_PROCESSING,
2095                           AFS_TRACE_LEVEL_VERBOSE,
2096                           "AFSQueueFlushExtents Max queued items for FID %08lX-%08lX-%08lX-%08lX\n",
2097                           Fcb->ObjectInformation->FileId.Cell,
2098                           Fcb->ObjectInformation->FileId.Volume,
2099                           Fcb->ObjectInformation->FileId.Vnode,
2100                           Fcb->ObjectInformation->FileId.Unique);
2101
2102             try_return( ntStatus);
2103         }
2104
2105         if( BooleanFlagOn( pRDRDeviceExt->DeviceFlags, AFS_DEVICE_FLAG_REDIRECTOR_SHUTDOWN))
2106         {
2107
2108             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2109                           AFS_TRACE_LEVEL_ERROR,
2110                           "AFSQueueFlushExtents Failing request, in shutdown\n");
2111
2112             try_return( ntStatus = STATUS_TOO_LATE);
2113         }
2114
2115         //
2116         // Allocate our request structure and send it to the worker
2117         //
2118
2119         pWorkItem = (AFSWorkItem *)AFSLibExAllocatePoolWithTag( NonPagedPool,
2120                                                                 sizeof( AFSWorkItem),
2121                                                                 AFS_WORK_ITEM_TAG);
2122
2123         if( pWorkItem == NULL)
2124         {
2125
2126             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2127                           AFS_TRACE_LEVEL_ERROR,
2128                           "AFSQueueFlushExtents Failed to allocate work item\n");
2129
2130             try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
2131         }
2132
2133         RtlZeroMemory( pWorkItem,
2134                        sizeof( AFSWorkItem));
2135
2136         pWorkItem->Size = sizeof( AFSWorkItem);
2137
2138         pWorkItem->ProcessID = (ULONGLONG)PsGetCurrentProcessId();
2139
2140         pWorkItem->RequestType = AFS_WORK_FLUSH_FCB;
2141
2142         if ( AuthGroup == NULL)
2143         {
2144
2145             RtlZeroMemory( &pWorkItem->AuthGroup,
2146                            sizeof( GUID));
2147
2148             ntStatus = AFSRetrieveValidAuthGroup( Fcb,
2149                                                   NULL,
2150                                                   TRUE,
2151                                                   &pWorkItem->AuthGroup);
2152         }
2153         else
2154         {
2155             RtlCopyMemory( &pWorkItem->AuthGroup,
2156                            AuthGroup,
2157                            sizeof( GUID));
2158         }
2159
2160         pWorkItem->Specific.Fcb.Fcb = Fcb;
2161
2162         lCount = InterlockedIncrement( &Fcb->OpenReferenceCount);
2163
2164         AFSDbgLogMsg( AFS_SUBSYSTEM_FCB_REF_COUNTING,
2165                       AFS_TRACE_LEVEL_VERBOSE,
2166                       "AFSQueueFlushExtents Increment count on Fcb %08lX Cnt %d\n",
2167                       Fcb,
2168                       lCount);
2169
2170         AFSDbgLogMsg( AFS_SUBSYSTEM_WORKER_PROCESSING,
2171                       AFS_TRACE_LEVEL_VERBOSE,
2172                       "AFSQueueFlushExtents Workitem %08lX for FID %08lX-%08lX-%08lX-%08lX\n",
2173                       pWorkItem,
2174                       Fcb->ObjectInformation->FileId.Cell,
2175                       Fcb->ObjectInformation->FileId.Volume,
2176                       Fcb->ObjectInformation->FileId.Vnode,
2177                       Fcb->ObjectInformation->FileId.Unique);
2178
2179         ntStatus = AFSQueueWorkerRequest( pWorkItem);
2180
2181 try_exit:
2182
2183         AFSDbgLogMsg( AFS_SUBSYSTEM_WORKER_PROCESSING,
2184                       AFS_TRACE_LEVEL_VERBOSE,
2185                       "AFSQueueFlushExtents Request complete Status %08lX FID %08lX-%08lX-%08lX-%08lX\n",
2186                       Fcb->ObjectInformation->FileId.Cell,
2187                       Fcb->ObjectInformation->FileId.Volume,
2188                       Fcb->ObjectInformation->FileId.Vnode,
2189                       Fcb->ObjectInformation->FileId.Unique,
2190                       ntStatus);
2191
2192         //
2193         // Remove the count we added above
2194         //
2195
2196         lCount = InterlockedDecrement( &Fcb->Specific.File.QueuedFlushCount);
2197
2198         if( lCount == 0)
2199         {
2200
2201             KeSetEvent( &Fcb->NPFcb->Specific.File.QueuedFlushEvent,
2202                         0,
2203                         FALSE);
2204         }
2205
2206         if( !NT_SUCCESS( ntStatus))
2207         {
2208
2209             if( pWorkItem != NULL)
2210             {
2211
2212                 lCount = InterlockedDecrement( &Fcb->OpenReferenceCount);
2213
2214                 ExFreePoolWithTag( pWorkItem, AFS_WORK_ITEM_TAG);
2215             }
2216
2217             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2218                           AFS_TRACE_LEVEL_ERROR,
2219                           "AFSQueueFlushExtents Failed to queue request Status %08lX\n", ntStatus);
2220         }
2221     }
2222     __except( AFSExceptionFilter( __FUNCTION__, GetExceptionCode(), GetExceptionInformation()) )
2223     {
2224
2225         AFSDbgLogMsg( 0,
2226                       0,
2227                       "EXCEPTION - AFSQueueFlushExtents\n");
2228
2229         AFSDumpTraceFilesFnc();
2230     }
2231
2232     return ntStatus;
2233 }
2234
2235 NTSTATUS
2236 AFSQueueGlobalRootEnumeration()
2237 {
2238
2239     NTSTATUS ntStatus = STATUS_SUCCESS;
2240     AFSWorkItem *pWorkItem = NULL;
2241
2242     __try
2243     {
2244
2245         pWorkItem = (AFSWorkItem *) AFSLibExAllocatePoolWithTag( NonPagedPool,
2246                                                                  sizeof(AFSWorkItem),
2247                                                                  AFS_WORK_ITEM_TAG);
2248         if (NULL == pWorkItem)
2249         {
2250
2251             AFSDbgLogMsg( AFS_SUBSYSTEM_IO_PROCESSING,
2252                           AFS_TRACE_LEVEL_ERROR,
2253                           "AFSQueueGlobalRootEnumeration Failed to allocate work item\n");
2254
2255             try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES );
2256         }
2257
2258         RtlZeroMemory( pWorkItem,
2259                        sizeof(AFSWorkItem));
2260
2261         pWorkItem->Size = sizeof( AFSWorkItem);
2262
2263         pWorkItem->RequestType = AFS_WORK_ENUMERATE_GLOBAL_ROOT;
2264
2265         AFSDbgLogMsg( AFS_SUBSYSTEM_WORKER_PROCESSING,
2266                       AFS_TRACE_LEVEL_VERBOSE,
2267                       "AFSQueueGlobalRootEnumeration Workitem %08lX\n",
2268                       pWorkItem);
2269
2270         ntStatus = AFSQueueWorkerRequest( pWorkItem);
2271
2272 try_exit:
2273
2274         AFSDbgLogMsg( AFS_SUBSYSTEM_WORKER_PROCESSING,
2275                       AFS_TRACE_LEVEL_VERBOSE,
2276                       "AFSQueueGlobalRootEnumeration Request complete Status %08lX\n",
2277                       ntStatus);
2278
2279         if( !NT_SUCCESS( ntStatus))
2280         {
2281
2282             if( pWorkItem != NULL)
2283             {
2284
2285                 ExFreePoolWithTag( pWorkItem, AFS_WORK_ITEM_TAG);
2286             }
2287
2288             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2289                           AFS_TRACE_LEVEL_ERROR,
2290                           "AFSQueueGlobalRootEnumeration Failed to queue request Status %08lX\n",
2291                           ntStatus);
2292         }
2293     }
2294     __except( AFSExceptionFilter( __FUNCTION__, GetExceptionCode(), GetExceptionInformation()) )
2295     {
2296
2297         AFSDbgLogMsg( 0,
2298                       0,
2299                       "EXCEPTION - AFSQueueGlobalRootEnumeration\n");
2300
2301         AFSDumpTraceFilesFnc();
2302     }
2303
2304     return ntStatus;
2305 }
2306
2307 NTSTATUS
2308 AFSQueueStartIos( IN PFILE_OBJECT CacheFileObject,
2309                   IN UCHAR FunctionCode,
2310                   IN ULONG RequestFlags,
2311                   IN AFSIoRun *IoRuns,
2312                   IN ULONG RunCount,
2313                   IN AFSGatherIo *GatherIo)
2314 {
2315
2316     NTSTATUS ntStatus = STATUS_SUCCESS;
2317     AFSDeviceExt *pRDRDeviceExt = (AFSDeviceExt *)AFSRDRDeviceObject->DeviceExtension;
2318     AFSWorkItem *pWorkItem = NULL;
2319
2320     __try
2321     {
2322
2323         if( BooleanFlagOn( pRDRDeviceExt->DeviceFlags, AFS_DEVICE_FLAG_REDIRECTOR_SHUTDOWN))
2324         {
2325
2326             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2327                           AFS_TRACE_LEVEL_ERROR,
2328                           "AFSQueueStartIos Failing request, in shutdown\n");
2329
2330             try_return( ntStatus = STATUS_TOO_LATE);
2331         }
2332
2333         //
2334         // Allocate our request structure and send it to the worker
2335         //
2336
2337         pWorkItem = (AFSWorkItem *)AFSLibExAllocatePoolWithTag( NonPagedPool,
2338                                                                 sizeof( AFSWorkItem),
2339                                                                 AFS_WORK_ITEM_TAG);
2340
2341         if( pWorkItem == NULL)
2342         {
2343
2344             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2345                           AFS_TRACE_LEVEL_ERROR,
2346                           "AFSQueueStartIos Failed to allocate work item\n");
2347
2348             try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
2349         }
2350
2351         RtlZeroMemory( pWorkItem,
2352                        sizeof( AFSWorkItem));
2353
2354         KeInitializeEvent( &pWorkItem->Event,
2355                            NotificationEvent,
2356                            FALSE);
2357
2358         pWorkItem->Size = sizeof( AFSWorkItem);
2359
2360         pWorkItem->ProcessID = (ULONGLONG)PsGetCurrentProcessId();
2361
2362         pWorkItem->RequestType = AFS_WORK_START_IOS;
2363
2364         pWorkItem->Specific.CacheAccess.CacheFileObject = CacheFileObject;
2365
2366         pWorkItem->Specific.CacheAccess.FunctionCode = FunctionCode;
2367
2368         pWorkItem->Specific.CacheAccess.RequestFlags = RequestFlags;
2369
2370         pWorkItem->Specific.CacheAccess.IoRuns = IoRuns;
2371
2372         pWorkItem->Specific.CacheAccess.RunCount = RunCount;
2373
2374         pWorkItem->Specific.CacheAccess.GatherIo = GatherIo;
2375
2376         AFSDbgLogMsg( AFS_SUBSYSTEM_WORKER_PROCESSING,
2377                       AFS_TRACE_LEVEL_VERBOSE,
2378                       "AFSQueueStartIos Queuing IO Workitem %08lX\n",
2379                       pWorkItem);
2380
2381         ntStatus = AFSQueueIOWorkerRequest( pWorkItem);
2382
2383 try_exit:
2384
2385         AFSDbgLogMsg( AFS_SUBSYSTEM_WORKER_PROCESSING,
2386                       AFS_TRACE_LEVEL_VERBOSE,
2387                       "AFSQueueStartIos Request complete Status %08lX\n",
2388                       ntStatus);
2389
2390         if( !NT_SUCCESS( ntStatus))
2391         {
2392
2393             if( pWorkItem != NULL)
2394             {
2395
2396                 ExFreePoolWithTag( pWorkItem, AFS_WORK_ITEM_TAG);
2397             }
2398         }
2399     }
2400     __except( AFSExceptionFilter( __FUNCTION__, GetExceptionCode(), GetExceptionInformation()) )
2401     {
2402
2403         AFSDbgLogMsg( 0,
2404                       0,
2405                       "EXCEPTION - AFSQueueStartIos\n");
2406
2407         AFSDumpTraceFilesFnc();
2408     }
2409
2410     return ntStatus;
2411 }
2412
2413 NTSTATUS
2414 AFSQueueInvalidateObject( IN AFSObjectInfoCB *ObjectInfo,
2415                           IN ULONG InvalidateReason)
2416 {
2417
2418     NTSTATUS ntStatus = STATUS_SUCCESS;
2419     AFSWorkItem *pWorkItem = NULL;
2420
2421     __try
2422     {
2423
2424         pWorkItem = (AFSWorkItem *) AFSLibExAllocatePoolWithTag( NonPagedPool,
2425                                                                  sizeof(AFSWorkItem),
2426                                                                  AFS_WORK_ITEM_TAG);
2427         if (NULL == pWorkItem)
2428         {
2429
2430             AFSDbgLogMsg( AFS_SUBSYSTEM_IO_PROCESSING,
2431                           AFS_TRACE_LEVEL_ERROR,
2432                           "AFSQueueInvalidateObject Failed to allocate work item\n");
2433
2434             try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES );
2435         }
2436
2437         RtlZeroMemory( pWorkItem,
2438                        sizeof(AFSWorkItem));
2439
2440         pWorkItem->Size = sizeof( AFSWorkItem);
2441
2442         pWorkItem->RequestType = AFS_WORK_INVALIDATE_OBJECT;
2443
2444         pWorkItem->Specific.Invalidate.ObjectInfo = ObjectInfo;
2445
2446         pWorkItem->Specific.Invalidate.InvalidateReason = InvalidateReason;
2447
2448         AFSDbgLogMsg( AFS_SUBSYSTEM_WORKER_PROCESSING,
2449                       AFS_TRACE_LEVEL_VERBOSE,
2450                       "AFSQueueInvalidateObject Workitem %08lX\n",
2451                       pWorkItem);
2452
2453         ntStatus = AFSQueueWorkerRequest( pWorkItem);
2454
2455 try_exit:
2456
2457         AFSDbgLogMsg( AFS_SUBSYSTEM_WORKER_PROCESSING,
2458                       AFS_TRACE_LEVEL_VERBOSE,
2459                       "AFSQueueInvalidateObject Request complete Status %08lX\n",
2460                       ntStatus);
2461
2462         if( !NT_SUCCESS( ntStatus))
2463         {
2464
2465             if( pWorkItem != NULL)
2466             {
2467                 ExFreePoolWithTag( pWorkItem, AFS_WORK_ITEM_TAG);
2468             }
2469
2470             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2471                           AFS_TRACE_LEVEL_ERROR,
2472                           "AFSQueueInvalidateObject Failed to queue request Status %08lX\n",
2473                           ntStatus);
2474         }
2475     }
2476     __except( AFSExceptionFilter( __FUNCTION__, GetExceptionCode(), GetExceptionInformation()) )
2477     {
2478
2479         AFSDbgLogMsg( 0,
2480                       0,
2481                       "EXCEPTION - AFSQueueInvalidateObject\n");
2482
2483         AFSDumpTraceFilesFnc();
2484     }
2485
2486     return ntStatus;
2487 }