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                                     AFSRemoveFcb( &pCurrentObject->Fcb);
1178
1179                                     if( pCurrentObject->Specific.Directory.PIOCtlDirectoryCB != NULL)
1180                                     {
1181
1182                                         AFSRemoveFcb( &pCurrentObject->Specific.Directory.PIOCtlDirectoryCB->ObjectInformation->Fcb);
1183
1184                                         AFSDeleteObjectInfo( pCurrentObject->Specific.Directory.PIOCtlDirectoryCB->ObjectInformation);
1185
1186                                         ExDeleteResourceLite( &pCurrentChildObject->Specific.Directory.PIOCtlDirectoryCB->NonPaged->Lock);
1187
1188                                         AFSExFreePoolWithTag( pCurrentChildObject->Specific.Directory.PIOCtlDirectoryCB->NonPaged, AFS_DIR_ENTRY_NP_TAG);
1189
1190                                         AFSExFreePoolWithTag( pCurrentObject->Specific.Directory.PIOCtlDirectoryCB, AFS_DIR_ENTRY_TAG);
1191                                     }
1192
1193                                     AFSDbgLogMsg( AFS_SUBSYSTEM_CLEANUP_PROCESSING,
1194                                                   AFS_TRACE_LEVEL_VERBOSE,
1195                                                   "AFSPrimaryVolumeWorkerThread Deleting deleted object %08lX\n",
1196                                                   pCurrentObject);
1197
1198                                     AFSDeleteObjectInfo( pCurrentObject);
1199                                 }
1200
1201                                 AFSConvertToShared( pVolumeCB->ObjectInfoTree.TreeLock);
1202
1203                                 pCurrentObject = pNextObject;
1204
1205                                 continue;
1206                             }
1207                             else
1208                             {
1209
1210                                 bReleaseVolumeLock = FALSE;
1211
1212                                 break;
1213                             }
1214                         }
1215
1216                         if( pCurrentObject->Specific.Directory.ChildOpenReferenceCount > 0 ||
1217                             ( pCurrentObject->Fcb != NULL &&
1218                               pCurrentObject->Fcb->OpenReferenceCount > 0) ||
1219                             pCurrentObject->Specific.Directory.DirectoryNodeListHead == NULL)
1220                         {
1221
1222                             pCurrentObject = pNextObject;
1223
1224                             continue;
1225                         }
1226
1227                         if( !AFSAcquireShared( pCurrentObject->Specific.Directory.DirectoryNodeHdr.TreeLock,
1228                                                FALSE))
1229                         {
1230
1231                             pCurrentObject = pNextObject;
1232
1233                             continue;
1234                         }
1235
1236                         KeQueryTickCount( &liCurrentTime);
1237
1238                         pCurrentDirEntry = pCurrentObject->Specific.Directory.DirectoryNodeListHead;
1239
1240                         while( pCurrentDirEntry != NULL)
1241                         {
1242
1243                             if( pCurrentDirEntry->OpenReferenceCount > 0 ||
1244                                 ( pCurrentDirEntry->ObjectInformation->Fcb != NULL &&
1245                                   pCurrentDirEntry->ObjectInformation->Fcb->OpenReferenceCount > 0) ||
1246                                 liCurrentTime.QuadPart <= pCurrentDirEntry->ObjectInformation->LastAccessCount.QuadPart ||
1247                                 liCurrentTime.QuadPart - pCurrentDirEntry->ObjectInformation->LastAccessCount.QuadPart <
1248                                                                         pControlDeviceExt->Specific.Control.ObjectLifeTimeCount.QuadPart ||
1249                                 ( pCurrentDirEntry->ObjectInformation->FileType == AFS_FILE_TYPE_DIRECTORY &&
1250                                    ( pCurrentDirEntry->ObjectInformation->Specific.Directory.DirectoryNodeListHead != NULL ||
1251                                      pCurrentDirEntry->ObjectInformation->Specific.Directory.ChildOpenReferenceCount > 0)) ||
1252                                 ( pCurrentDirEntry->ObjectInformation->FileType == AFS_FILE_TYPE_FILE &&
1253                                   pCurrentDirEntry->ObjectInformation->Fcb != NULL &&
1254                                   pCurrentDirEntry->ObjectInformation->Fcb->Specific.File.ExtentsDirtyCount > 0))
1255                             {
1256
1257                                 break;
1258                             }
1259
1260                             pCurrentDirEntry = (AFSDirectoryCB *)pCurrentDirEntry->ListEntry.fLink;
1261                         }
1262
1263                         if( pCurrentDirEntry != NULL)
1264                         {
1265
1266                             AFSReleaseResource( pCurrentObject->Specific.Directory.DirectoryNodeHdr.TreeLock);
1267
1268                             pCurrentObject = pNextObject;
1269
1270                             continue;
1271                         }
1272
1273                         AFSReleaseResource( pCurrentObject->Specific.Directory.DirectoryNodeHdr.TreeLock);
1274
1275                         AFSReleaseResource( pVolumeCB->ObjectInfoTree.TreeLock);
1276
1277                         //
1278                         // Now acquire the locks excl
1279                         //
1280
1281                         if( AFSAcquireExcl( pCurrentObject->Specific.Directory.DirectoryNodeHdr.TreeLock,
1282                                             FALSE))
1283                         {
1284
1285                             if( AFSAcquireExcl( pVolumeCB->ObjectInfoTree.TreeLock,
1286                                                 FALSE))
1287                             {
1288
1289                                 if( pCurrentObject->Specific.Directory.ChildOpenReferenceCount > 0)
1290                                 {
1291
1292                                     AFSReleaseResource( pCurrentObject->Specific.Directory.DirectoryNodeHdr.TreeLock);
1293
1294                                     AFSConvertToShared( pVolumeCB->ObjectInfoTree.TreeLock);
1295
1296                                     pCurrentObject = pNextObject;
1297
1298                                     continue;
1299                                 }
1300
1301                                 KeQueryTickCount( &liCurrentTime);
1302
1303                                 pCurrentDirEntry = pCurrentObject->Specific.Directory.DirectoryNodeListHead;
1304
1305                                 while( pCurrentDirEntry != NULL)
1306                                 {
1307
1308                                     if( pCurrentDirEntry->OpenReferenceCount > 0 ||
1309                                         ( pCurrentDirEntry->ObjectInformation->Fcb != NULL &&
1310                                           pCurrentDirEntry->ObjectInformation->Fcb->OpenReferenceCount > 0) ||
1311                                         liCurrentTime.QuadPart <= pCurrentDirEntry->ObjectInformation->LastAccessCount.QuadPart ||
1312                                         liCurrentTime.QuadPart - pCurrentDirEntry->ObjectInformation->LastAccessCount.QuadPart <
1313                                                                                 pControlDeviceExt->Specific.Control.ObjectLifeTimeCount.QuadPart ||
1314                                         ( pCurrentDirEntry->ObjectInformation->FileType == AFS_FILE_TYPE_DIRECTORY &&
1315                                           ( pCurrentDirEntry->ObjectInformation->Specific.Directory.DirectoryNodeListHead != NULL ||
1316                                             pCurrentDirEntry->ObjectInformation->Specific.Directory.ChildOpenReferenceCount > 0)) ||
1317                                         ( pCurrentDirEntry->ObjectInformation->FileType == AFS_FILE_TYPE_FILE &&
1318                                           pCurrentDirEntry->ObjectInformation->Fcb != NULL &&
1319                                           pCurrentDirEntry->ObjectInformation->Fcb->Specific.File.ExtentsDirtyCount > 0))
1320                                     {
1321
1322                                         break;
1323                                     }
1324
1325                                     pCurrentDirEntry = (AFSDirectoryCB *)pCurrentDirEntry->ListEntry.fLink;
1326                                 }
1327
1328                                 if( pCurrentDirEntry != NULL)
1329                                 {
1330
1331                                     AFSReleaseResource( pCurrentObject->Specific.Directory.DirectoryNodeHdr.TreeLock);
1332
1333                                     AFSConvertToShared( pVolumeCB->ObjectInfoTree.TreeLock);
1334
1335                                     pCurrentObject = pNextObject;
1336
1337                                     continue;
1338                                 }
1339
1340                                 pCurrentDirEntry = pCurrentObject->Specific.Directory.DirectoryNodeListHead;
1341
1342                                 while( pCurrentDirEntry != NULL)
1343                                 {
1344
1345                                     pNextDirEntry = (AFSDirectoryCB *)pCurrentDirEntry->ListEntry.fLink;
1346
1347                                     pCurrentChildObject = pCurrentDirEntry->ObjectInformation;
1348
1349                                     pFcb = NULL;
1350
1351                                     AFSDbgLogMsg( AFS_SUBSYSTEM_CLEANUP_PROCESSING,
1352                                                   AFS_TRACE_LEVEL_VERBOSE,
1353                                                   "AFSPrimaryVolumeWorkerThread Deleting DE %wZ Object %08lX\n",
1354                                                   &pCurrentDirEntry->NameInformation.FileName,
1355                                                   pCurrentChildObject);
1356
1357                                     AFSDeleteDirEntry( pCurrentObject,
1358                                                        pCurrentDirEntry);
1359
1360                                     if( pCurrentChildObject->ObjectReferenceCount <= 0 &&
1361                                         pCurrentChildObject->Fcb != NULL &&
1362                                         pCurrentChildObject->FileType == AFS_FILE_TYPE_FILE)
1363                                     {
1364
1365                                         //
1366                                         // We must not hold pVolumeCB->ObjectInfoTree.TreeLock exclusive
1367                                         // across an AFSCleanupFcb call since it can deadlock with an
1368                                         // invalidation call from the service.
1369                                         //
1370
1371                                         AFSReleaseResource( pVolumeCB->ObjectInfoTree.TreeLock);
1372
1373                                         //
1374                                         // Dropping the TreeLock permits the
1375                                         // pCurrentObject->ObjectReferenceCount to change
1376                                         //
1377
1378                                         AFSCleanupFcb( pCurrentChildObject->Fcb,
1379                                                        TRUE);
1380
1381                                         AFSAcquireExcl( pVolumeCB->ObjectInfoTree.TreeLock,
1382                                                         TRUE);
1383                                     }
1384
1385                                     if( pCurrentChildObject->ObjectReferenceCount <= 0 &&
1386                                         ( pCurrentChildObject->Fcb == NULL ||
1387                                           pCurrentChildObject->Fcb->OpenReferenceCount == 0 &&
1388                                           pCurrentChildObject->Fcb->Specific.File.ExtentCount == 0))
1389                                     {
1390
1391                                         AFSRemoveFcb( &pCurrentChildObject->Fcb);
1392
1393                                         if( pCurrentChildObject->FileType == AFS_FILE_TYPE_DIRECTORY &&
1394                                             pCurrentChildObject->Specific.Directory.PIOCtlDirectoryCB != NULL)
1395                                         {
1396
1397                                             AFSRemoveFcb( &pCurrentChildObject->Specific.Directory.PIOCtlDirectoryCB->ObjectInformation->Fcb);
1398
1399                                             AFSDeleteObjectInfo( pCurrentChildObject->Specific.Directory.PIOCtlDirectoryCB->ObjectInformation);
1400
1401                                             ExDeleteResourceLite( &pCurrentChildObject->Specific.Directory.PIOCtlDirectoryCB->NonPaged->Lock);
1402
1403                                             AFSExFreePoolWithTag( pCurrentChildObject->Specific.Directory.PIOCtlDirectoryCB->NonPaged, AFS_DIR_ENTRY_NP_TAG);
1404
1405                                             AFSExFreePoolWithTag( pCurrentChildObject->Specific.Directory.PIOCtlDirectoryCB, AFS_DIR_ENTRY_TAG);
1406                                         }
1407
1408                                         AFSDbgLogMsg( AFS_SUBSYSTEM_CLEANUP_PROCESSING,
1409                                                       AFS_TRACE_LEVEL_VERBOSE,
1410                                                       "AFSPrimaryVolumeWorkerThread Deleting object %08lX\n",
1411                                                       pCurrentChildObject);
1412
1413                                         AFSDeleteObjectInfo( pCurrentChildObject);
1414                                     }
1415
1416                                     pCurrentDirEntry = pNextDirEntry;
1417
1418                                 }
1419
1420                                 pCurrentObject->Specific.Directory.DirectoryNodeListHead = NULL;
1421
1422                                 pCurrentObject->Specific.Directory.DirectoryNodeListTail = NULL;
1423
1424                                 pCurrentObject->Specific.Directory.ShortNameTree = NULL;
1425
1426                                 pCurrentObject->Specific.Directory.DirectoryNodeHdr.CaseSensitiveTreeHead = NULL;
1427
1428                                 pCurrentObject->Specific.Directory.DirectoryNodeHdr.CaseInsensitiveTreeHead = NULL;
1429
1430                                 pCurrentObject->Specific.Directory.DirectoryNodeCount = 0;
1431
1432                                 AFSDbgLogMsg( AFS_SUBSYSTEM_DIR_NODE_COUNT,
1433                                               AFS_TRACE_LEVEL_VERBOSE,
1434                                               "AFSPrimaryVolumeWorkerThread Reset count to 0 on parent FID %08lX-%08lX-%08lX-%08lX\n",
1435                                               pCurrentObject->FileId.Cell,
1436                                               pCurrentObject->FileId.Volume,
1437                                               pCurrentObject->FileId.Vnode,
1438                                               pCurrentObject->FileId.Unique);
1439
1440                                 //
1441                                 // Clear our enumerated flag on this object so we retrieve info again on next access
1442                                 //
1443
1444                                 ClearFlag( pCurrentObject->Flags, AFS_OBJECT_FLAGS_DIRECTORY_ENUMERATED);
1445
1446                                 AFSReleaseResource( pCurrentObject->Specific.Directory.DirectoryNodeHdr.TreeLock);
1447
1448                                 AFSConvertToShared( pVolumeCB->ObjectInfoTree.TreeLock);
1449                             }
1450                             else
1451                             {
1452
1453                                 AFSReleaseResource( pCurrentObject->Specific.Directory.DirectoryNodeHdr.TreeLock);
1454
1455                                 bReleaseVolumeLock = FALSE;
1456
1457                                 break;
1458                             }
1459                         }
1460                         else
1461                         {
1462
1463                             //
1464                             // Try to grab the volume lock again ... no problem if we don't
1465                             //
1466
1467                             if( !AFSAcquireExcl( pVolumeCB->ObjectInfoTree.TreeLock,
1468                                                  FALSE))
1469                             {
1470
1471                                 bReleaseVolumeLock = FALSE;
1472
1473                                 break;
1474                             }
1475                         }
1476
1477                         if( pCurrentObject != &pVolumeCB->ObjectInformation)
1478                         {
1479
1480                             pCurrentObject = (AFSObjectInfoCB *)pCurrentObject->ListEntry.fLink;
1481
1482                             if( pCurrentObject == NULL &&
1483                                 pVolumeCB != AFSGlobalRoot)
1484                             {
1485
1486                                 pCurrentObject = &pVolumeCB->ObjectInformation;
1487                             }
1488                         }
1489                         else
1490                         {
1491
1492                             pCurrentObject = NULL;
1493                         }
1494
1495                         continue;
1496                     }
1497                     else if( pCurrentObject->FileType == AFS_FILE_TYPE_FILE)
1498                     {
1499
1500                         AFSReleaseResource( pVolumeCB->ObjectInfoTree.TreeLock);
1501
1502                         if( pCurrentObject->Fcb != NULL)
1503                         {
1504
1505                             //
1506                             // Dropping the TreeLock permits the
1507                             // pCurrentObject->ObjectReferenceCount to change
1508                             //
1509
1510                             AFSCleanupFcb( pCurrentObject->Fcb,
1511                                            TRUE);
1512                         }
1513
1514                         if( !AFSAcquireExcl( pVolumeCB->ObjectInfoTree.TreeLock,
1515                                              FALSE))
1516                         {
1517
1518                             bReleaseVolumeLock = FALSE;
1519
1520                             break;
1521                         }
1522
1523                         if( BooleanFlagOn( pCurrentObject->Flags, AFS_OBJECT_FLAGS_DELETED) &&
1524                             pCurrentObject->ObjectReferenceCount <= 0 &&
1525                             ( pCurrentObject->Fcb == NULL ||
1526                               pCurrentObject->Fcb->OpenReferenceCount == 0 &&
1527                               pCurrentObject->Fcb->Specific.File.ExtentCount == 0))
1528                         {
1529
1530                             AFSRemoveFcb( &pCurrentObject->Fcb);
1531
1532                             AFSDeleteObjectInfo( pCurrentObject);
1533                         }
1534
1535                         AFSConvertToShared( pVolumeCB->ObjectInfoTree.TreeLock);
1536
1537                         pCurrentObject = pNextObject;
1538
1539                         continue;
1540                     }
1541
1542                     pCurrentObject = pNextObject;
1543                 }
1544
1545                 if( bReleaseVolumeLock)
1546                 {
1547
1548                     AFSReleaseResource( pVolumeCB->ObjectInfoTree.TreeLock);
1549                 }
1550             }
1551
1552             //
1553             // Next volume cb
1554             //
1555
1556             AFSReleaseResource( pVolumeCB->VolumeLock);
1557
1558             AFSAcquireShared( &pRDRDeviceExt->Specific.RDR.VolumeListLock,
1559                               TRUE);
1560
1561             pVolumeCB = (AFSVolumeCB *)pVolumeCB->ListEntry.fLink;
1562         }
1563
1564         AFSReleaseResource( &pRDRDeviceExt->Specific.RDR.VolumeListLock);
1565
1566     } // worker thread loop
1567
1568     KeCancelTimer( &Timer);
1569
1570     AFSDbgLogMsg( AFS_SUBSYSTEM_CLEANUP_PROCESSING,
1571                   AFS_TRACE_LEVEL_VERBOSE,
1572                   "AFSPrimaryVolumeWorkerThread Exiting\n");
1573
1574     lCount = InterlockedDecrement( &pControlDeviceExt->Specific.Control.VolumeWorkerThreadCount);
1575
1576     if( lCount == 0)
1577     {
1578
1579         KeSetEvent( &pControlDeviceExt->Specific.Control.VolumeWorkerCloseEvent,
1580                     0,
1581                     FALSE);
1582     }
1583
1584     PsTerminateSystemThread( 0);
1585
1586     return;
1587 }
1588
1589 void
1590 AFSVolumeWorkerThread( IN PVOID Context)
1591 {
1592
1593     NTSTATUS ntStatus = STATUS_SUCCESS;
1594     AFSVolumeCB *pVolumeCB = (AFSVolumeCB * )Context;
1595     AFSWorkQueueContext *pPoolContext = (AFSWorkQueueContext *)&pVolumeCB->VolumeWorkerContext;
1596     AFSDeviceExt *pControlDeviceExt = NULL;
1597     AFSDeviceExt *pRDRDeviceExt = NULL;
1598     BOOLEAN exitThread = FALSE;
1599     LARGE_INTEGER DueTime;
1600     LONG TimeOut;
1601     KTIMER Timer;
1602     LONG lCount;
1603
1604     pControlDeviceExt = (AFSDeviceExt *)AFSControlDeviceObject->DeviceExtension;
1605
1606     pRDRDeviceExt = (AFSDeviceExt *)AFSRDRDeviceObject->DeviceExtension;
1607
1608     //
1609     // Initialize the timer for the worker thread
1610     //
1611
1612     DueTime.QuadPart = -(5000);
1613
1614     TimeOut = 5000;
1615
1616     KeInitializeTimerEx( &Timer,
1617                          SynchronizationTimer);
1618
1619     KeSetTimerEx( &Timer,
1620                   DueTime,
1621                   TimeOut,
1622                   NULL);
1623
1624     //
1625     // Indicate that we are initialized and ready
1626     //
1627
1628     KeSetEvent( &pPoolContext->WorkerThreadReady,
1629                 0,
1630                 FALSE);
1631
1632     //
1633     // Indicate we are initialized
1634     //
1635
1636     SetFlag( pPoolContext->State, AFS_WORKER_INITIALIZED);
1637
1638     while( BooleanFlagOn( pPoolContext->State, AFS_WORKER_PROCESS_REQUESTS))
1639     {
1640
1641         ntStatus = KeWaitForSingleObject( &Timer,
1642                                           Executive,
1643                                           KernelMode,
1644                                           FALSE,
1645                                           NULL);
1646
1647         if( !NT_SUCCESS( ntStatus))
1648         {
1649
1650             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
1651                           AFS_TRACE_LEVEL_ERROR,
1652                           "AFSVolumeWorkerThread Wait for queue items failed Status %08lX\n", ntStatus);
1653         }
1654         else
1655         {
1656
1657             //
1658             // If we are in shutdown mode and the dirty flag is clear then get out now
1659             //
1660
1661             if( BooleanFlagOn( pRDRDeviceExt->DeviceFlags, AFS_DEVICE_FLAG_REDIRECTOR_SHUTDOWN))
1662             {
1663
1664                 break;
1665             }
1666         }
1667     } // worker thread loop
1668
1669     KeCancelTimer( &Timer);
1670
1671     lCount = InterlockedDecrement( &pControlDeviceExt->Specific.Control.VolumeWorkerThreadCount);
1672
1673     if( lCount == 0)
1674     {
1675
1676         KeSetEvent( &pControlDeviceExt->Specific.Control.VolumeWorkerCloseEvent,
1677                     0,
1678                     FALSE);
1679     }
1680
1681     PsTerminateSystemThread( 0);
1682
1683     return;
1684 }
1685
1686 NTSTATUS
1687 AFSInsertWorkitem( IN AFSWorkItem *WorkItem)
1688 {
1689
1690     NTSTATUS ntStatus = STATUS_SUCCESS;
1691     AFSDeviceExt *pDevExt = NULL;
1692     LONG lCount;
1693
1694     pDevExt = (AFSDeviceExt *)AFSLibraryDeviceObject->DeviceExtension;
1695
1696     AFSDbgLogMsg( AFS_SUBSYSTEM_LOCK_PROCESSING,
1697                   AFS_TRACE_LEVEL_VERBOSE,
1698                   "AFSInsertWorkitem Acquiring Control QueueLock lock %08lX EXCL %08lX\n",
1699                   &pDevExt->Specific.Library.QueueLock,
1700                   PsGetCurrentThread());
1701
1702     AFSAcquireExcl( &pDevExt->Specific.Library.QueueLock,
1703                     TRUE);
1704
1705     lCount = InterlockedIncrement( &pDevExt->Specific.Library.QueueItemCount);
1706
1707     AFSDbgLogMsg( AFS_SUBSYSTEM_WORKER_PROCESSING,
1708                   AFS_TRACE_LEVEL_VERBOSE,
1709                   "AFSInsertWorkitem Inserting work item %08lX Count %08lX\n",
1710                   WorkItem,
1711                   lCount);
1712
1713     if( pDevExt->Specific.Library.QueueTail != NULL) // queue already has nodes
1714     {
1715
1716         pDevExt->Specific.Library.QueueTail->next = WorkItem;
1717     }
1718     else // first node
1719     {
1720
1721         pDevExt->Specific.Library.QueueHead = WorkItem;
1722     }
1723
1724     WorkItem->next = NULL;
1725     pDevExt->Specific.Library.QueueTail = WorkItem;
1726
1727     // indicate that the queue has nodes
1728     KeSetEvent( &(pDevExt->Specific.Library.WorkerQueueHasItems),
1729                 0,
1730                 FALSE);
1731
1732     AFSReleaseResource( &pDevExt->Specific.Library.QueueLock);
1733
1734     return ntStatus;
1735 }
1736
1737 NTSTATUS
1738 AFSInsertIOWorkitem( IN AFSWorkItem *WorkItem)
1739 {
1740
1741     NTSTATUS ntStatus = STATUS_SUCCESS;
1742     AFSDeviceExt *pDevExt = NULL;
1743     LONG lCount;
1744
1745     pDevExt = (AFSDeviceExt *)AFSLibraryDeviceObject->DeviceExtension;
1746
1747     AFSDbgLogMsg( AFS_SUBSYSTEM_LOCK_PROCESSING,
1748                   AFS_TRACE_LEVEL_VERBOSE,
1749                   "AFSInsertIOWorkitem Acquiring Control QueueLock lock %08lX EXCL %08lX\n",
1750                   &pDevExt->Specific.Library.IOQueueLock,
1751                   PsGetCurrentThread());
1752
1753     AFSAcquireExcl( &pDevExt->Specific.Library.IOQueueLock,
1754                     TRUE);
1755
1756     lCount = InterlockedIncrement( &pDevExt->Specific.Library.IOQueueItemCount);
1757
1758     AFSDbgLogMsg( AFS_SUBSYSTEM_WORKER_PROCESSING,
1759                   AFS_TRACE_LEVEL_VERBOSE,
1760                   "AFSInsertWorkitem Inserting IO work item %08lX Count %08lX\n",
1761                   WorkItem,
1762                   lCount);
1763
1764     if( pDevExt->Specific.Library.IOQueueTail != NULL) // queue already has nodes
1765     {
1766
1767         pDevExt->Specific.Library.IOQueueTail->next = WorkItem;
1768     }
1769     else // first node
1770     {
1771
1772         pDevExt->Specific.Library.IOQueueHead = WorkItem;
1773     }
1774
1775     WorkItem->next = NULL;
1776     pDevExt->Specific.Library.IOQueueTail = WorkItem;
1777
1778     // indicate that the queue has nodes
1779     KeSetEvent( &(pDevExt->Specific.Library.IOWorkerQueueHasItems),
1780                 0,
1781                 FALSE);
1782
1783     AFSReleaseResource( &pDevExt->Specific.Library.IOQueueLock);
1784
1785     return ntStatus;
1786 }
1787
1788 NTSTATUS
1789 AFSInsertWorkitemAtHead( IN AFSWorkItem *WorkItem)
1790 {
1791
1792     NTSTATUS ntStatus = STATUS_SUCCESS;
1793     AFSDeviceExt *pDevExt = NULL;
1794     LONG lCount;
1795
1796     pDevExt = (AFSDeviceExt *)AFSLibraryDeviceObject->DeviceExtension;
1797
1798     AFSDbgLogMsg( AFS_SUBSYSTEM_LOCK_PROCESSING,
1799                   AFS_TRACE_LEVEL_VERBOSE,
1800                   "AFSInsertWorkitemAtHead Acquiring Control QueueLock lock %08lX EXCL %08lX\n",
1801                   &pDevExt->Specific.Library.QueueLock,
1802                   PsGetCurrentThread());
1803
1804     AFSAcquireExcl( &pDevExt->Specific.Library.QueueLock,
1805                     TRUE);
1806
1807     WorkItem->next = pDevExt->Specific.Library.QueueHead;
1808
1809     pDevExt->Specific.Library.QueueHead = WorkItem;
1810
1811     lCount = InterlockedIncrement( &pDevExt->Specific.Library.QueueItemCount);
1812
1813     AFSDbgLogMsg( AFS_SUBSYSTEM_WORKER_PROCESSING,
1814                   AFS_TRACE_LEVEL_VERBOSE,
1815                   "AFSInsertWorkitemAtHead Inserting work item %08lX Count %08lX\n",
1816                   WorkItem,
1817                   lCount);
1818
1819     //
1820     // indicate that the queue has nodes
1821     //
1822
1823     KeSetEvent( &(pDevExt->Specific.Library.WorkerQueueHasItems),
1824                 0,
1825                 FALSE);
1826
1827     AFSReleaseResource( &pDevExt->Specific.Library.QueueLock);
1828
1829     return ntStatus;
1830 }
1831
1832 AFSWorkItem *
1833 AFSRemoveWorkItem()
1834 {
1835
1836     NTSTATUS ntStatus = STATUS_SUCCESS;
1837     AFSWorkItem        *pWorkItem = NULL;
1838     AFSDeviceExt *pDevExt = NULL;
1839     LONG lCount;
1840
1841     pDevExt = (AFSDeviceExt *)AFSLibraryDeviceObject->DeviceExtension;
1842
1843     AFSDbgLogMsg( AFS_SUBSYSTEM_LOCK_PROCESSING,
1844                   AFS_TRACE_LEVEL_VERBOSE,
1845                   "AFSRemoveWorkItem Acquiring Control QueueLock lock %08lX EXCL %08lX\n",
1846                   &pDevExt->Specific.Library.QueueLock,
1847                   PsGetCurrentThread());
1848
1849     AFSAcquireExcl( &pDevExt->Specific.Library.QueueLock,
1850                     TRUE);
1851
1852     if( pDevExt->Specific.Library.QueueHead != NULL) // queue has nodes
1853     {
1854
1855         pWorkItem = pDevExt->Specific.Library.QueueHead;
1856
1857         lCount = InterlockedDecrement( &pDevExt->Specific.Library.QueueItemCount);
1858
1859         AFSDbgLogMsg( AFS_SUBSYSTEM_WORKER_PROCESSING,
1860                       AFS_TRACE_LEVEL_VERBOSE,
1861                       "AFSRemoveWorkItem Removing work item %08lX Count %08lX Thread %08lX\n",
1862                       pWorkItem,
1863                       lCount,
1864                       PsGetCurrentThreadId());
1865
1866         pDevExt->Specific.Library.QueueHead = pDevExt->Specific.Library.QueueHead->next;
1867
1868         if( pDevExt->Specific.Library.QueueHead == NULL) // if queue just became empty
1869         {
1870
1871             pDevExt->Specific.Library.QueueTail = NULL;
1872         }
1873         else
1874         {
1875
1876             //
1877             // Wake up another worker
1878             //
1879
1880             KeSetEvent( &(pDevExt->Specific.Library.WorkerQueueHasItems),
1881                         0,
1882                         FALSE);
1883         }
1884     }
1885
1886     AFSReleaseResource( &pDevExt->Specific.Library.QueueLock);
1887
1888     return pWorkItem;
1889 }
1890
1891 AFSWorkItem *
1892 AFSRemoveIOWorkItem()
1893 {
1894
1895     NTSTATUS ntStatus = STATUS_SUCCESS;
1896     AFSWorkItem        *pWorkItem = NULL;
1897     AFSDeviceExt *pDevExt = NULL;
1898     LONG lCount;
1899
1900     pDevExt = (AFSDeviceExt *)AFSLibraryDeviceObject->DeviceExtension;
1901
1902     AFSDbgLogMsg( AFS_SUBSYSTEM_LOCK_PROCESSING,
1903                   AFS_TRACE_LEVEL_VERBOSE,
1904                   "AFSRemoveIOWorkItem Acquiring Control QueueLock lock %08lX EXCL %08lX\n",
1905                   &pDevExt->Specific.Library.IOQueueLock,
1906                   PsGetCurrentThread());
1907
1908     AFSAcquireExcl( &pDevExt->Specific.Library.IOQueueLock,
1909                     TRUE);
1910
1911     if( pDevExt->Specific.Library.IOQueueHead != NULL) // queue has nodes
1912     {
1913
1914         pWorkItem = pDevExt->Specific.Library.IOQueueHead;
1915
1916         lCount = InterlockedDecrement( &pDevExt->Specific.Library.IOQueueItemCount);
1917
1918         AFSDbgLogMsg( AFS_SUBSYSTEM_WORKER_PROCESSING,
1919                       AFS_TRACE_LEVEL_VERBOSE,
1920                       "AFSRemoveWorkItem Removing work item %08lX Count %08lX Thread %08lX\n",
1921                       pWorkItem,
1922                       lCount,
1923                       PsGetCurrentThreadId());
1924
1925         pDevExt->Specific.Library.IOQueueHead = pDevExt->Specific.Library.IOQueueHead->next;
1926
1927         if( pDevExt->Specific.Library.IOQueueHead == NULL) // if queue just became empty
1928         {
1929
1930             pDevExt->Specific.Library.IOQueueTail = NULL;
1931         }
1932         else
1933         {
1934
1935             //
1936             // Wake up another worker
1937             //
1938
1939             KeSetEvent( &(pDevExt->Specific.Library.IOWorkerQueueHasItems),
1940                         0,
1941                         FALSE);
1942         }
1943     }
1944
1945     AFSReleaseResource( &pDevExt->Specific.Library.IOQueueLock);
1946
1947     return pWorkItem;
1948 }
1949
1950 NTSTATUS
1951 AFSQueueWorkerRequest( IN AFSWorkItem *WorkItem)
1952 {
1953
1954     NTSTATUS ntStatus = STATUS_SUCCESS;
1955     AFSDeviceExt *pDevExt = NULL;
1956     BOOLEAN bWait = BooleanFlagOn( WorkItem->RequestFlags, AFS_SYNCHRONOUS_REQUEST);
1957
1958     //
1959     // Submit the work item to the worker
1960     //
1961
1962     ntStatus = AFSInsertWorkitem( WorkItem);
1963
1964     if( bWait)
1965     {
1966
1967         //
1968         // Sync request so block on the work item event
1969         //
1970
1971         ntStatus = KeWaitForSingleObject( &WorkItem->Event,
1972                                           Executive,
1973                                           KernelMode,
1974                                           FALSE,
1975                                           NULL);
1976     }
1977
1978     return ntStatus;
1979 }
1980
1981 NTSTATUS
1982 AFSQueueIOWorkerRequest( IN AFSWorkItem *WorkItem)
1983 {
1984
1985     NTSTATUS ntStatus = STATUS_SUCCESS;
1986     AFSDeviceExt *pDevExt = NULL;
1987     BOOLEAN bWait = BooleanFlagOn( WorkItem->RequestFlags, AFS_SYNCHRONOUS_REQUEST);
1988
1989     //
1990     // Submit the work item to the worker
1991     //
1992
1993     ntStatus = AFSInsertIOWorkitem( WorkItem);
1994
1995     if( bWait)
1996     {
1997
1998         //
1999         // Sync request so block on the work item event
2000         //
2001
2002         ntStatus = KeWaitForSingleObject( &WorkItem->Event,
2003                                           Executive,
2004                                           KernelMode,
2005                                           FALSE,
2006                                           NULL);
2007     }
2008
2009     return ntStatus;
2010 }
2011
2012 NTSTATUS
2013 AFSQueueWorkerRequestAtHead( IN AFSWorkItem *WorkItem)
2014 {
2015
2016     NTSTATUS ntStatus = STATUS_SUCCESS;
2017     AFSDeviceExt *pDevExt = NULL;
2018     BOOLEAN bWait = BooleanFlagOn( WorkItem->RequestFlags, AFS_SYNCHRONOUS_REQUEST);
2019
2020     //
2021     // Submit the work item to the worker
2022     //
2023
2024     ntStatus = AFSInsertWorkitemAtHead( WorkItem);
2025
2026     if( bWait)
2027     {
2028
2029         //
2030         // Sync request so block on the work item event
2031         //
2032
2033         ntStatus = KeWaitForSingleObject( &WorkItem->Event,
2034                                           Executive,
2035                                           KernelMode,
2036                                           FALSE,
2037                                           NULL);
2038     }
2039
2040     return ntStatus;
2041 }
2042
2043 NTSTATUS
2044 AFSQueueFlushExtents( IN AFSFcb *Fcb,
2045                       IN GUID *AuthGroup)
2046 {
2047
2048     NTSTATUS ntStatus = STATUS_SUCCESS;
2049     AFSDeviceExt *pRDRDeviceExt = (AFSDeviceExt *)AFSRDRDeviceObject->DeviceExtension;
2050     AFSWorkItem *pWorkItem = NULL;
2051     LONG lCount;
2052
2053     __try
2054     {
2055
2056         AFSDbgLogMsg( AFS_SUBSYSTEM_WORKER_PROCESSING,
2057                       AFS_TRACE_LEVEL_VERBOSE,
2058                       "AFSQueueFlushExtents Queuing request for FID %08lX-%08lX-%08lX-%08lX\n",
2059                       Fcb->ObjectInformation->FileId.Cell,
2060                       Fcb->ObjectInformation->FileId.Volume,
2061                       Fcb->ObjectInformation->FileId.Vnode,
2062                       Fcb->ObjectInformation->FileId.Unique);
2063
2064         //
2065         // Increment our flush count here just to keep the number of items in the
2066         // queue down. We'll decrement it just below.
2067         //
2068
2069         lCount = InterlockedIncrement( &Fcb->Specific.File.QueuedFlushCount);
2070
2071         if( lCount > 3)
2072         {
2073
2074             AFSDbgLogMsg( AFS_SUBSYSTEM_WORKER_PROCESSING,
2075                           AFS_TRACE_LEVEL_VERBOSE,
2076                           "AFSQueueFlushExtents Max queued items for FID %08lX-%08lX-%08lX-%08lX\n",
2077                           Fcb->ObjectInformation->FileId.Cell,
2078                           Fcb->ObjectInformation->FileId.Volume,
2079                           Fcb->ObjectInformation->FileId.Vnode,
2080                           Fcb->ObjectInformation->FileId.Unique);
2081
2082             try_return( ntStatus);
2083         }
2084
2085         if( BooleanFlagOn( pRDRDeviceExt->DeviceFlags, AFS_DEVICE_FLAG_REDIRECTOR_SHUTDOWN))
2086         {
2087
2088             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2089                           AFS_TRACE_LEVEL_ERROR,
2090                           "AFSQueueFlushExtents Failing request, in shutdown\n");
2091
2092             try_return( ntStatus = STATUS_TOO_LATE);
2093         }
2094
2095         //
2096         // Allocate our request structure and send it to the worker
2097         //
2098
2099         pWorkItem = (AFSWorkItem *)AFSLibExAllocatePoolWithTag( NonPagedPool,
2100                                                                 sizeof( AFSWorkItem),
2101                                                                 AFS_WORK_ITEM_TAG);
2102
2103         if( pWorkItem == NULL)
2104         {
2105
2106             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2107                           AFS_TRACE_LEVEL_ERROR,
2108                           "AFSQueueFlushExtents Failed to allocate work item\n");
2109
2110             try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
2111         }
2112
2113         RtlZeroMemory( pWorkItem,
2114                        sizeof( AFSWorkItem));
2115
2116         pWorkItem->Size = sizeof( AFSWorkItem);
2117
2118         pWorkItem->ProcessID = (ULONGLONG)PsGetCurrentProcessId();
2119
2120         pWorkItem->RequestType = AFS_WORK_FLUSH_FCB;
2121
2122         if ( AuthGroup == NULL)
2123         {
2124
2125             RtlZeroMemory( &pWorkItem->AuthGroup,
2126                            sizeof( GUID));
2127
2128             ntStatus = AFSRetrieveValidAuthGroup( Fcb,
2129                                                   NULL,
2130                                                   TRUE,
2131                                                   &pWorkItem->AuthGroup);
2132         }
2133         else
2134         {
2135             RtlCopyMemory( &pWorkItem->AuthGroup,
2136                            AuthGroup,
2137                            sizeof( GUID));
2138         }
2139
2140         pWorkItem->Specific.Fcb.Fcb = Fcb;
2141
2142         lCount = InterlockedIncrement( &Fcb->OpenReferenceCount);
2143
2144         AFSDbgLogMsg( AFS_SUBSYSTEM_FCB_REF_COUNTING,
2145                       AFS_TRACE_LEVEL_VERBOSE,
2146                       "AFSQueueFlushExtents Increment count on Fcb %08lX Cnt %d\n",
2147                       Fcb,
2148                       lCount);
2149
2150         AFSDbgLogMsg( AFS_SUBSYSTEM_WORKER_PROCESSING,
2151                       AFS_TRACE_LEVEL_VERBOSE,
2152                       "AFSQueueFlushExtents Workitem %08lX for FID %08lX-%08lX-%08lX-%08lX\n",
2153                       pWorkItem,
2154                       Fcb->ObjectInformation->FileId.Cell,
2155                       Fcb->ObjectInformation->FileId.Volume,
2156                       Fcb->ObjectInformation->FileId.Vnode,
2157                       Fcb->ObjectInformation->FileId.Unique);
2158
2159         ntStatus = AFSQueueWorkerRequest( pWorkItem);
2160
2161 try_exit:
2162
2163         AFSDbgLogMsg( AFS_SUBSYSTEM_WORKER_PROCESSING,
2164                       AFS_TRACE_LEVEL_VERBOSE,
2165                       "AFSQueueFlushExtents Request complete Status %08lX FID %08lX-%08lX-%08lX-%08lX\n",
2166                       Fcb->ObjectInformation->FileId.Cell,
2167                       Fcb->ObjectInformation->FileId.Volume,
2168                       Fcb->ObjectInformation->FileId.Vnode,
2169                       Fcb->ObjectInformation->FileId.Unique,
2170                       ntStatus);
2171
2172         //
2173         // Remove the count we added above
2174         //
2175
2176         lCount = InterlockedDecrement( &Fcb->Specific.File.QueuedFlushCount);
2177
2178         if( lCount == 0)
2179         {
2180
2181             KeSetEvent( &Fcb->NPFcb->Specific.File.QueuedFlushEvent,
2182                         0,
2183                         FALSE);
2184         }
2185
2186         if( !NT_SUCCESS( ntStatus))
2187         {
2188
2189             if( pWorkItem != NULL)
2190             {
2191
2192                 lCount = InterlockedDecrement( &Fcb->OpenReferenceCount);
2193
2194                 ExFreePoolWithTag( pWorkItem, AFS_WORK_ITEM_TAG);
2195             }
2196
2197             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2198                           AFS_TRACE_LEVEL_ERROR,
2199                           "AFSQueueFlushExtents Failed to queue request Status %08lX\n", ntStatus);
2200         }
2201     }
2202     __except( AFSExceptionFilter( __FUNCTION__, GetExceptionCode(), GetExceptionInformation()) )
2203     {
2204
2205         AFSDbgLogMsg( 0,
2206                       0,
2207                       "EXCEPTION - AFSQueueFlushExtents\n");
2208
2209         AFSDumpTraceFilesFnc();
2210     }
2211
2212     return ntStatus;
2213 }
2214
2215 NTSTATUS
2216 AFSQueueGlobalRootEnumeration()
2217 {
2218
2219     NTSTATUS ntStatus = STATUS_SUCCESS;
2220     AFSWorkItem *pWorkItem = NULL;
2221
2222     __try
2223     {
2224
2225         pWorkItem = (AFSWorkItem *) AFSLibExAllocatePoolWithTag( NonPagedPool,
2226                                                                  sizeof(AFSWorkItem),
2227                                                                  AFS_WORK_ITEM_TAG);
2228         if (NULL == pWorkItem)
2229         {
2230
2231             AFSDbgLogMsg( AFS_SUBSYSTEM_IO_PROCESSING,
2232                           AFS_TRACE_LEVEL_ERROR,
2233                           "AFSQueueGlobalRootEnumeration Failed to allocate work item\n");
2234
2235             try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES );
2236         }
2237
2238         RtlZeroMemory( pWorkItem,
2239                        sizeof(AFSWorkItem));
2240
2241         pWorkItem->Size = sizeof( AFSWorkItem);
2242
2243         pWorkItem->RequestType = AFS_WORK_ENUMERATE_GLOBAL_ROOT;
2244
2245         AFSDbgLogMsg( AFS_SUBSYSTEM_WORKER_PROCESSING,
2246                       AFS_TRACE_LEVEL_VERBOSE,
2247                       "AFSQueueGlobalRootEnumeration Workitem %08lX\n",
2248                       pWorkItem);
2249
2250         ntStatus = AFSQueueWorkerRequest( pWorkItem);
2251
2252 try_exit:
2253
2254         AFSDbgLogMsg( AFS_SUBSYSTEM_WORKER_PROCESSING,
2255                       AFS_TRACE_LEVEL_VERBOSE,
2256                       "AFSQueueGlobalRootEnumeration Request complete Status %08lX\n",
2257                       ntStatus);
2258
2259         if( !NT_SUCCESS( ntStatus))
2260         {
2261
2262             if( pWorkItem != NULL)
2263             {
2264
2265                 ExFreePoolWithTag( pWorkItem, AFS_WORK_ITEM_TAG);
2266             }
2267
2268             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2269                           AFS_TRACE_LEVEL_ERROR,
2270                           "AFSQueueGlobalRootEnumeration Failed to queue request Status %08lX\n",
2271                           ntStatus);
2272         }
2273     }
2274     __except( AFSExceptionFilter( __FUNCTION__, GetExceptionCode(), GetExceptionInformation()) )
2275     {
2276
2277         AFSDbgLogMsg( 0,
2278                       0,
2279                       "EXCEPTION - AFSQueueGlobalRootEnumeration\n");
2280
2281         AFSDumpTraceFilesFnc();
2282     }
2283
2284     return ntStatus;
2285 }
2286
2287 NTSTATUS
2288 AFSQueueStartIos( IN PFILE_OBJECT CacheFileObject,
2289                   IN UCHAR FunctionCode,
2290                   IN ULONG RequestFlags,
2291                   IN AFSIoRun *IoRuns,
2292                   IN ULONG RunCount,
2293                   IN AFSGatherIo *GatherIo)
2294 {
2295
2296     NTSTATUS ntStatus = STATUS_SUCCESS;
2297     AFSDeviceExt *pRDRDeviceExt = (AFSDeviceExt *)AFSRDRDeviceObject->DeviceExtension;
2298     AFSWorkItem *pWorkItem = NULL;
2299
2300     __try
2301     {
2302
2303         if( BooleanFlagOn( pRDRDeviceExt->DeviceFlags, AFS_DEVICE_FLAG_REDIRECTOR_SHUTDOWN))
2304         {
2305
2306             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2307                           AFS_TRACE_LEVEL_ERROR,
2308                           "AFSQueueStartIos Failing request, in shutdown\n");
2309
2310             try_return( ntStatus = STATUS_TOO_LATE);
2311         }
2312
2313         //
2314         // Allocate our request structure and send it to the worker
2315         //
2316
2317         pWorkItem = (AFSWorkItem *)AFSLibExAllocatePoolWithTag( NonPagedPool,
2318                                                                 sizeof( AFSWorkItem),
2319                                                                 AFS_WORK_ITEM_TAG);
2320
2321         if( pWorkItem == NULL)
2322         {
2323
2324             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2325                           AFS_TRACE_LEVEL_ERROR,
2326                           "AFSQueueStartIos Failed to allocate work item\n");
2327
2328             try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
2329         }
2330
2331         RtlZeroMemory( pWorkItem,
2332                        sizeof( AFSWorkItem));
2333
2334         KeInitializeEvent( &pWorkItem->Event,
2335                            NotificationEvent,
2336                            FALSE);
2337
2338         pWorkItem->Size = sizeof( AFSWorkItem);
2339
2340         pWorkItem->ProcessID = (ULONGLONG)PsGetCurrentProcessId();
2341
2342         pWorkItem->RequestType = AFS_WORK_START_IOS;
2343
2344         pWorkItem->Specific.CacheAccess.CacheFileObject = CacheFileObject;
2345
2346         pWorkItem->Specific.CacheAccess.FunctionCode = FunctionCode;
2347
2348         pWorkItem->Specific.CacheAccess.RequestFlags = RequestFlags;
2349
2350         pWorkItem->Specific.CacheAccess.IoRuns = IoRuns;
2351
2352         pWorkItem->Specific.CacheAccess.RunCount = RunCount;
2353
2354         pWorkItem->Specific.CacheAccess.GatherIo = GatherIo;
2355
2356         AFSDbgLogMsg( AFS_SUBSYSTEM_WORKER_PROCESSING,
2357                       AFS_TRACE_LEVEL_VERBOSE,
2358                       "AFSQueueStartIos Queuing IO Workitem %08lX\n",
2359                       pWorkItem);
2360
2361         ntStatus = AFSQueueIOWorkerRequest( pWorkItem);
2362
2363 try_exit:
2364
2365         AFSDbgLogMsg( AFS_SUBSYSTEM_WORKER_PROCESSING,
2366                       AFS_TRACE_LEVEL_VERBOSE,
2367                       "AFSQueueStartIos Request complete Status %08lX\n",
2368                       ntStatus);
2369
2370         if( !NT_SUCCESS( ntStatus))
2371         {
2372
2373             if( pWorkItem != NULL)
2374             {
2375
2376                 ExFreePoolWithTag( pWorkItem, AFS_WORK_ITEM_TAG);
2377             }
2378         }
2379     }
2380     __except( AFSExceptionFilter( __FUNCTION__, GetExceptionCode(), GetExceptionInformation()) )
2381     {
2382
2383         AFSDbgLogMsg( 0,
2384                       0,
2385                       "EXCEPTION - AFSQueueStartIos\n");
2386
2387         AFSDumpTraceFilesFnc();
2388     }
2389
2390     return ntStatus;
2391 }
2392
2393 NTSTATUS
2394 AFSQueueInvalidateObject( IN AFSObjectInfoCB *ObjectInfo,
2395                           IN ULONG InvalidateReason)
2396 {
2397
2398     NTSTATUS ntStatus = STATUS_SUCCESS;
2399     AFSWorkItem *pWorkItem = NULL;
2400
2401     __try
2402     {
2403
2404         pWorkItem = (AFSWorkItem *) AFSLibExAllocatePoolWithTag( NonPagedPool,
2405                                                                  sizeof(AFSWorkItem),
2406                                                                  AFS_WORK_ITEM_TAG);
2407         if (NULL == pWorkItem)
2408         {
2409
2410             AFSDbgLogMsg( AFS_SUBSYSTEM_IO_PROCESSING,
2411                           AFS_TRACE_LEVEL_ERROR,
2412                           "AFSQueueInvalidateObject Failed to allocate work item\n");
2413
2414             try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES );
2415         }
2416
2417         RtlZeroMemory( pWorkItem,
2418                        sizeof(AFSWorkItem));
2419
2420         pWorkItem->Size = sizeof( AFSWorkItem);
2421
2422         pWorkItem->RequestType = AFS_WORK_INVALIDATE_OBJECT;
2423
2424         pWorkItem->Specific.Invalidate.ObjectInfo = ObjectInfo;
2425
2426         pWorkItem->Specific.Invalidate.InvalidateReason = InvalidateReason;
2427
2428         AFSDbgLogMsg( AFS_SUBSYSTEM_WORKER_PROCESSING,
2429                       AFS_TRACE_LEVEL_VERBOSE,
2430                       "AFSQueueInvalidateObject Workitem %08lX\n",
2431                       pWorkItem);
2432
2433         ntStatus = AFSQueueWorkerRequest( pWorkItem);
2434
2435 try_exit:
2436
2437         AFSDbgLogMsg( AFS_SUBSYSTEM_WORKER_PROCESSING,
2438                       AFS_TRACE_LEVEL_VERBOSE,
2439                       "AFSQueueInvalidateObject Request complete Status %08lX\n",
2440                       ntStatus);
2441
2442         if( !NT_SUCCESS( ntStatus))
2443         {
2444
2445             if( pWorkItem != NULL)
2446             {
2447                 ExFreePoolWithTag( pWorkItem, AFS_WORK_ITEM_TAG);
2448             }
2449
2450             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2451                           AFS_TRACE_LEVEL_ERROR,
2452                           "AFSQueueInvalidateObject Failed to queue request Status %08lX\n",
2453                           ntStatus);
2454         }
2455     }
2456     __except( AFSExceptionFilter( __FUNCTION__, GetExceptionCode(), GetExceptionInformation()) )
2457     {
2458
2459         AFSDbgLogMsg( 0,
2460                       0,
2461                       "EXCEPTION - AFSQueueInvalidateObject\n");
2462
2463         AFSDumpTraceFilesFnc();
2464     }
2465
2466     return ntStatus;
2467 }