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                                      ( pCurrentObject->Fcb == NULL ||
1176                                        pCurrentObject->Fcb->OpenReferenceCount == 0 &&
1177                                        pCurrentObject->Fcb->Specific.File.ExtentCount == 0))
1178                                 {
1179
1180                                     AFSRemoveFcb( &pCurrentObject->Fcb);
1181
1182                                     if( pCurrentObject->Specific.Directory.PIOCtlDirectoryCB != NULL)
1183                                     {
1184
1185                                         AFSRemoveFcb( &pCurrentObject->Specific.Directory.PIOCtlDirectoryCB->ObjectInformation->Fcb);
1186
1187                                         AFSDeleteObjectInfo( pCurrentObject->Specific.Directory.PIOCtlDirectoryCB->ObjectInformation);
1188
1189                                         ExDeleteResourceLite( &pCurrentChildObject->Specific.Directory.PIOCtlDirectoryCB->NonPaged->Lock);
1190
1191                                         AFSExFreePoolWithTag( pCurrentChildObject->Specific.Directory.PIOCtlDirectoryCB->NonPaged, AFS_DIR_ENTRY_NP_TAG);
1192
1193                                         AFSExFreePoolWithTag( pCurrentObject->Specific.Directory.PIOCtlDirectoryCB, AFS_DIR_ENTRY_TAG);
1194                                     }
1195
1196                                     AFSDbgLogMsg( AFS_SUBSYSTEM_CLEANUP_PROCESSING,
1197                                                   AFS_TRACE_LEVEL_VERBOSE,
1198                                                   "AFSPrimaryVolumeWorkerThread Deleting deleted object %08lX\n",
1199                                                   pCurrentObject);
1200
1201                                     AFSDeleteObjectInfo( pCurrentObject);
1202                                 }
1203
1204                                 AFSConvertToShared( pVolumeCB->ObjectInfoTree.TreeLock);
1205
1206                                 pCurrentObject = pNextObject;
1207
1208                                 continue;
1209                             }
1210                             else
1211                             {
1212
1213                                 bReleaseVolumeLock = FALSE;
1214
1215                                 break;
1216                             }
1217                         }
1218
1219                         if( pCurrentObject->Specific.Directory.ChildOpenReferenceCount > 0 ||
1220                             ( pCurrentObject->Fcb != NULL &&
1221                               pCurrentObject->Fcb->OpenReferenceCount > 0) ||
1222                             pCurrentObject->Specific.Directory.DirectoryNodeListHead == NULL)
1223                         {
1224
1225                             pCurrentObject = pNextObject;
1226
1227                             continue;
1228                         }
1229
1230                         if( !AFSAcquireShared( pCurrentObject->Specific.Directory.DirectoryNodeHdr.TreeLock,
1231                                                FALSE))
1232                         {
1233
1234                             pCurrentObject = pNextObject;
1235
1236                             continue;
1237                         }
1238
1239                         KeQueryTickCount( &liCurrentTime);
1240
1241                         pCurrentDirEntry = pCurrentObject->Specific.Directory.DirectoryNodeListHead;
1242
1243                         while( pCurrentDirEntry != NULL)
1244                         {
1245
1246                             if( pCurrentDirEntry->OpenReferenceCount > 0 ||
1247                                 ( pCurrentDirEntry->ObjectInformation->Fcb != NULL &&
1248                                   pCurrentDirEntry->ObjectInformation->Fcb->OpenReferenceCount > 0) ||
1249                                 liCurrentTime.QuadPart <= pCurrentDirEntry->ObjectInformation->LastAccessCount.QuadPart ||
1250                                 liCurrentTime.QuadPart - pCurrentDirEntry->ObjectInformation->LastAccessCount.QuadPart <
1251                                                                         pControlDeviceExt->Specific.Control.ObjectLifeTimeCount.QuadPart ||
1252                                 ( pCurrentDirEntry->ObjectInformation->FileType == AFS_FILE_TYPE_DIRECTORY &&
1253                                    ( pCurrentDirEntry->ObjectInformation->Specific.Directory.DirectoryNodeListHead != NULL ||
1254                                      pCurrentDirEntry->ObjectInformation->Specific.Directory.ChildOpenReferenceCount > 0)) ||
1255                                 ( pCurrentDirEntry->ObjectInformation->FileType == AFS_FILE_TYPE_FILE &&
1256                                   pCurrentDirEntry->ObjectInformation->Fcb != NULL &&
1257                                   pCurrentDirEntry->ObjectInformation->Fcb->Specific.File.ExtentsDirtyCount > 0))
1258                             {
1259
1260                                 break;
1261                             }
1262
1263                             pCurrentDirEntry = (AFSDirectoryCB *)pCurrentDirEntry->ListEntry.fLink;
1264                         }
1265
1266                         if( pCurrentDirEntry != NULL)
1267                         {
1268
1269                             AFSReleaseResource( pCurrentObject->Specific.Directory.DirectoryNodeHdr.TreeLock);
1270
1271                             pCurrentObject = pNextObject;
1272
1273                             continue;
1274                         }
1275
1276                         AFSReleaseResource( pCurrentObject->Specific.Directory.DirectoryNodeHdr.TreeLock);
1277
1278                         AFSReleaseResource( pVolumeCB->ObjectInfoTree.TreeLock);
1279
1280                         //
1281                         // Now acquire the locks excl
1282                         //
1283
1284                         if( AFSAcquireExcl( pCurrentObject->Specific.Directory.DirectoryNodeHdr.TreeLock,
1285                                             FALSE))
1286                         {
1287
1288                             if( AFSAcquireExcl( pVolumeCB->ObjectInfoTree.TreeLock,
1289                                                 FALSE))
1290                             {
1291
1292                                 if( pCurrentObject->Specific.Directory.ChildOpenReferenceCount > 0)
1293                                 {
1294
1295                                     AFSReleaseResource( pCurrentObject->Specific.Directory.DirectoryNodeHdr.TreeLock);
1296
1297                                     AFSConvertToShared( pVolumeCB->ObjectInfoTree.TreeLock);
1298
1299                                     pCurrentObject = pNextObject;
1300
1301                                     continue;
1302                                 }
1303
1304                                 KeQueryTickCount( &liCurrentTime);
1305
1306                                 pCurrentDirEntry = pCurrentObject->Specific.Directory.DirectoryNodeListHead;
1307
1308                                 while( pCurrentDirEntry != NULL)
1309                                 {
1310
1311                                     if( pCurrentDirEntry->OpenReferenceCount > 0 ||
1312                                         ( pCurrentDirEntry->ObjectInformation->Fcb != NULL &&
1313                                           pCurrentDirEntry->ObjectInformation->Fcb->OpenReferenceCount > 0) ||
1314                                         liCurrentTime.QuadPart <= pCurrentDirEntry->ObjectInformation->LastAccessCount.QuadPart ||
1315                                         liCurrentTime.QuadPart - pCurrentDirEntry->ObjectInformation->LastAccessCount.QuadPart <
1316                                                                                 pControlDeviceExt->Specific.Control.ObjectLifeTimeCount.QuadPart ||
1317                                         ( pCurrentDirEntry->ObjectInformation->FileType == AFS_FILE_TYPE_DIRECTORY &&
1318                                           ( pCurrentDirEntry->ObjectInformation->Specific.Directory.DirectoryNodeListHead != NULL ||
1319                                             pCurrentDirEntry->ObjectInformation->Specific.Directory.ChildOpenReferenceCount > 0)) ||
1320                                         ( pCurrentDirEntry->ObjectInformation->FileType == AFS_FILE_TYPE_FILE &&
1321                                           pCurrentDirEntry->ObjectInformation->Fcb != NULL &&
1322                                           pCurrentDirEntry->ObjectInformation->Fcb->Specific.File.ExtentsDirtyCount > 0))
1323                                     {
1324
1325                                         break;
1326                                     }
1327
1328                                     pCurrentDirEntry = (AFSDirectoryCB *)pCurrentDirEntry->ListEntry.fLink;
1329                                 }
1330
1331                                 if( pCurrentDirEntry != NULL)
1332                                 {
1333
1334                                     AFSReleaseResource( pCurrentObject->Specific.Directory.DirectoryNodeHdr.TreeLock);
1335
1336                                     AFSConvertToShared( pVolumeCB->ObjectInfoTree.TreeLock);
1337
1338                                     pCurrentObject = pNextObject;
1339
1340                                     continue;
1341                                 }
1342
1343                                 pCurrentDirEntry = pCurrentObject->Specific.Directory.DirectoryNodeListHead;
1344
1345                                 while( pCurrentDirEntry != NULL)
1346                                 {
1347
1348                                     pNextDirEntry = (AFSDirectoryCB *)pCurrentDirEntry->ListEntry.fLink;
1349
1350                                     pCurrentChildObject = pCurrentDirEntry->ObjectInformation;
1351
1352                                     pFcb = NULL;
1353
1354                                     AFSDbgLogMsg( AFS_SUBSYSTEM_CLEANUP_PROCESSING,
1355                                                   AFS_TRACE_LEVEL_VERBOSE,
1356                                                   "AFSPrimaryVolumeWorkerThread Deleting DE %wZ Object %08lX\n",
1357                                                   &pCurrentDirEntry->NameInformation.FileName,
1358                                                   pCurrentChildObject);
1359
1360                                     AFSDeleteDirEntry( pCurrentObject,
1361                                                        pCurrentDirEntry);
1362
1363                                     if( pCurrentChildObject->ObjectReferenceCount <= 0 &&
1364                                         pCurrentChildObject->Fcb != NULL &&
1365                                         pCurrentChildObject->FileType == AFS_FILE_TYPE_FILE)
1366                                     {
1367
1368                                         //
1369                                         // We must not hold pVolumeCB->ObjectInfoTree.TreeLock exclusive
1370                                         // across an AFSCleanupFcb call since it can deadlock with an
1371                                         // invalidation call from the service.
1372                                         //
1373
1374                                         AFSReleaseResource( pVolumeCB->ObjectInfoTree.TreeLock);
1375
1376                                         //
1377                                         // Dropping the TreeLock permits the
1378                                         // pCurrentObject->ObjectReferenceCount to change
1379                                         //
1380
1381                                         AFSCleanupFcb( pCurrentChildObject->Fcb,
1382                                                        TRUE);
1383
1384                                         AFSAcquireExcl( pVolumeCB->ObjectInfoTree.TreeLock,
1385                                                         TRUE);
1386                                     }
1387
1388                                     if( pCurrentChildObject->ObjectReferenceCount <= 0 &&
1389                                         ( pCurrentChildObject->Fcb == NULL ||
1390                                           pCurrentChildObject->Fcb->OpenReferenceCount == 0 &&
1391                                           pCurrentChildObject->Fcb->Specific.File.ExtentCount == 0))
1392                                     {
1393
1394                                         AFSRemoveFcb( &pCurrentChildObject->Fcb);
1395
1396                                         if( pCurrentChildObject->FileType == AFS_FILE_TYPE_DIRECTORY &&
1397                                             pCurrentChildObject->Specific.Directory.PIOCtlDirectoryCB != NULL)
1398                                         {
1399
1400                                             AFSRemoveFcb( &pCurrentChildObject->Specific.Directory.PIOCtlDirectoryCB->ObjectInformation->Fcb);
1401
1402                                             AFSDeleteObjectInfo( pCurrentChildObject->Specific.Directory.PIOCtlDirectoryCB->ObjectInformation);
1403
1404                                             ExDeleteResourceLite( &pCurrentChildObject->Specific.Directory.PIOCtlDirectoryCB->NonPaged->Lock);
1405
1406                                             AFSExFreePoolWithTag( pCurrentChildObject->Specific.Directory.PIOCtlDirectoryCB->NonPaged, AFS_DIR_ENTRY_NP_TAG);
1407
1408                                             AFSExFreePoolWithTag( pCurrentChildObject->Specific.Directory.PIOCtlDirectoryCB, AFS_DIR_ENTRY_TAG);
1409                                         }
1410
1411                                         AFSDbgLogMsg( AFS_SUBSYSTEM_CLEANUP_PROCESSING,
1412                                                       AFS_TRACE_LEVEL_VERBOSE,
1413                                                       "AFSPrimaryVolumeWorkerThread Deleting object %08lX\n",
1414                                                       pCurrentChildObject);
1415
1416                                         AFSDeleteObjectInfo( pCurrentChildObject);
1417                                     }
1418
1419                                     pCurrentDirEntry = pNextDirEntry;
1420
1421                                 }
1422
1423                                 pCurrentObject->Specific.Directory.DirectoryNodeListHead = NULL;
1424
1425                                 pCurrentObject->Specific.Directory.DirectoryNodeListTail = NULL;
1426
1427                                 pCurrentObject->Specific.Directory.ShortNameTree = NULL;
1428
1429                                 pCurrentObject->Specific.Directory.DirectoryNodeHdr.CaseSensitiveTreeHead = NULL;
1430
1431                                 pCurrentObject->Specific.Directory.DirectoryNodeHdr.CaseInsensitiveTreeHead = NULL;
1432
1433                                 pCurrentObject->Specific.Directory.DirectoryNodeCount = 0;
1434
1435                                 AFSDbgLogMsg( AFS_SUBSYSTEM_DIR_NODE_COUNT,
1436                                               AFS_TRACE_LEVEL_VERBOSE,
1437                                               "AFSPrimaryVolumeWorkerThread Reset count to 0 on parent FID %08lX-%08lX-%08lX-%08lX\n",
1438                                               pCurrentObject->FileId.Cell,
1439                                               pCurrentObject->FileId.Volume,
1440                                               pCurrentObject->FileId.Vnode,
1441                                               pCurrentObject->FileId.Unique);
1442
1443                                 //
1444                                 // Clear our enumerated flag on this object so we retrieve info again on next access
1445                                 //
1446
1447                                 ClearFlag( pCurrentObject->Flags, AFS_OBJECT_FLAGS_DIRECTORY_ENUMERATED);
1448
1449                                 AFSReleaseResource( pCurrentObject->Specific.Directory.DirectoryNodeHdr.TreeLock);
1450
1451                                 AFSConvertToShared( pVolumeCB->ObjectInfoTree.TreeLock);
1452                             }
1453                             else
1454                             {
1455
1456                                 AFSReleaseResource( pCurrentObject->Specific.Directory.DirectoryNodeHdr.TreeLock);
1457
1458                                 bReleaseVolumeLock = FALSE;
1459
1460                                 break;
1461                             }
1462                         }
1463                         else
1464                         {
1465
1466                             //
1467                             // Try to grab the volume lock again ... no problem if we don't
1468                             //
1469
1470                             if( !AFSAcquireExcl( pVolumeCB->ObjectInfoTree.TreeLock,
1471                                                  FALSE))
1472                             {
1473
1474                                 bReleaseVolumeLock = FALSE;
1475
1476                                 break;
1477                             }
1478                         }
1479
1480                         if( pCurrentObject != &pVolumeCB->ObjectInformation)
1481                         {
1482
1483                             pCurrentObject = (AFSObjectInfoCB *)pCurrentObject->ListEntry.fLink;
1484
1485                             if( pCurrentObject == NULL &&
1486                                 pVolumeCB != AFSGlobalRoot)
1487                             {
1488
1489                                 pCurrentObject = &pVolumeCB->ObjectInformation;
1490                             }
1491                         }
1492                         else
1493                         {
1494
1495                             pCurrentObject = NULL;
1496                         }
1497
1498                         continue;
1499                     }
1500                     else if( pCurrentObject->FileType == AFS_FILE_TYPE_FILE)
1501                     {
1502
1503                         AFSReleaseResource( pVolumeCB->ObjectInfoTree.TreeLock);
1504
1505                         if( pCurrentObject->Fcb != NULL)
1506                         {
1507
1508                             //
1509                             // Dropping the TreeLock permits the
1510                             // pCurrentObject->ObjectReferenceCount to change
1511                             //
1512
1513                             AFSCleanupFcb( pCurrentObject->Fcb,
1514                                            TRUE);
1515                         }
1516
1517                         if( !AFSAcquireExcl( pVolumeCB->ObjectInfoTree.TreeLock,
1518                                              FALSE))
1519                         {
1520
1521                             bReleaseVolumeLock = FALSE;
1522
1523                             break;
1524                         }
1525
1526                         if( BooleanFlagOn( pCurrentObject->Flags, AFS_OBJECT_FLAGS_DELETED) &&
1527                             pCurrentObject->ObjectReferenceCount <= 0 &&
1528                             ( pCurrentObject->Fcb == NULL ||
1529                               pCurrentObject->Fcb->OpenReferenceCount == 0 &&
1530                               pCurrentObject->Fcb->Specific.File.ExtentCount == 0))
1531                         {
1532
1533                             AFSRemoveFcb( &pCurrentObject->Fcb);
1534
1535                             AFSDeleteObjectInfo( pCurrentObject);
1536                         }
1537
1538                         AFSConvertToShared( pVolumeCB->ObjectInfoTree.TreeLock);
1539
1540                         pCurrentObject = pNextObject;
1541
1542                         continue;
1543                     }
1544
1545                     pCurrentObject = pNextObject;
1546                 }
1547
1548                 if( bReleaseVolumeLock)
1549                 {
1550
1551                     AFSReleaseResource( pVolumeCB->ObjectInfoTree.TreeLock);
1552                 }
1553             }
1554
1555             //
1556             // Next volume cb
1557             //
1558
1559             AFSReleaseResource( pVolumeCB->VolumeLock);
1560
1561             AFSAcquireShared( &pRDRDeviceExt->Specific.RDR.VolumeListLock,
1562                               TRUE);
1563
1564             pVolumeCB = (AFSVolumeCB *)pVolumeCB->ListEntry.fLink;
1565         }
1566
1567         AFSReleaseResource( &pRDRDeviceExt->Specific.RDR.VolumeListLock);
1568
1569     } // worker thread loop
1570
1571     KeCancelTimer( &Timer);
1572
1573     AFSDbgLogMsg( AFS_SUBSYSTEM_CLEANUP_PROCESSING,
1574                   AFS_TRACE_LEVEL_VERBOSE,
1575                   "AFSPrimaryVolumeWorkerThread Exiting\n");
1576
1577     lCount = InterlockedDecrement( &pControlDeviceExt->Specific.Control.VolumeWorkerThreadCount);
1578
1579     if( lCount == 0)
1580     {
1581
1582         KeSetEvent( &pControlDeviceExt->Specific.Control.VolumeWorkerCloseEvent,
1583                     0,
1584                     FALSE);
1585     }
1586
1587     PsTerminateSystemThread( 0);
1588
1589     return;
1590 }
1591
1592 void
1593 AFSVolumeWorkerThread( IN PVOID Context)
1594 {
1595
1596     NTSTATUS ntStatus = STATUS_SUCCESS;
1597     AFSVolumeCB *pVolumeCB = (AFSVolumeCB * )Context;
1598     AFSWorkQueueContext *pPoolContext = (AFSWorkQueueContext *)&pVolumeCB->VolumeWorkerContext;
1599     AFSDeviceExt *pControlDeviceExt = NULL;
1600     AFSDeviceExt *pRDRDeviceExt = NULL;
1601     BOOLEAN exitThread = FALSE;
1602     LARGE_INTEGER DueTime;
1603     LONG TimeOut;
1604     KTIMER Timer;
1605     LONG lCount;
1606
1607     pControlDeviceExt = (AFSDeviceExt *)AFSControlDeviceObject->DeviceExtension;
1608
1609     pRDRDeviceExt = (AFSDeviceExt *)AFSRDRDeviceObject->DeviceExtension;
1610
1611     //
1612     // Initialize the timer for the worker thread
1613     //
1614
1615     DueTime.QuadPart = -(5000);
1616
1617     TimeOut = 5000;
1618
1619     KeInitializeTimerEx( &Timer,
1620                          SynchronizationTimer);
1621
1622     KeSetTimerEx( &Timer,
1623                   DueTime,
1624                   TimeOut,
1625                   NULL);
1626
1627     //
1628     // Indicate that we are initialized and ready
1629     //
1630
1631     KeSetEvent( &pPoolContext->WorkerThreadReady,
1632                 0,
1633                 FALSE);
1634
1635     //
1636     // Indicate we are initialized
1637     //
1638
1639     SetFlag( pPoolContext->State, AFS_WORKER_INITIALIZED);
1640
1641     while( BooleanFlagOn( pPoolContext->State, AFS_WORKER_PROCESS_REQUESTS))
1642     {
1643
1644         ntStatus = KeWaitForSingleObject( &Timer,
1645                                           Executive,
1646                                           KernelMode,
1647                                           FALSE,
1648                                           NULL);
1649
1650         if( !NT_SUCCESS( ntStatus))
1651         {
1652
1653             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
1654                           AFS_TRACE_LEVEL_ERROR,
1655                           "AFSVolumeWorkerThread Wait for queue items failed Status %08lX\n", ntStatus);
1656         }
1657         else
1658         {
1659
1660             //
1661             // If we are in shutdown mode and the dirty flag is clear then get out now
1662             //
1663
1664             if( BooleanFlagOn( pRDRDeviceExt->DeviceFlags, AFS_DEVICE_FLAG_REDIRECTOR_SHUTDOWN))
1665             {
1666
1667                 break;
1668             }
1669         }
1670     } // worker thread loop
1671
1672     KeCancelTimer( &Timer);
1673
1674     lCount = InterlockedDecrement( &pControlDeviceExt->Specific.Control.VolumeWorkerThreadCount);
1675
1676     if( lCount == 0)
1677     {
1678
1679         KeSetEvent( &pControlDeviceExt->Specific.Control.VolumeWorkerCloseEvent,
1680                     0,
1681                     FALSE);
1682     }
1683
1684     PsTerminateSystemThread( 0);
1685
1686     return;
1687 }
1688
1689 NTSTATUS
1690 AFSInsertWorkitem( IN AFSWorkItem *WorkItem)
1691 {
1692
1693     NTSTATUS ntStatus = STATUS_SUCCESS;
1694     AFSDeviceExt *pDevExt = NULL;
1695     LONG lCount;
1696
1697     pDevExt = (AFSDeviceExt *)AFSLibraryDeviceObject->DeviceExtension;
1698
1699     AFSDbgLogMsg( AFS_SUBSYSTEM_LOCK_PROCESSING,
1700                   AFS_TRACE_LEVEL_VERBOSE,
1701                   "AFSInsertWorkitem Acquiring Control QueueLock lock %08lX EXCL %08lX\n",
1702                   &pDevExt->Specific.Library.QueueLock,
1703                   PsGetCurrentThread());
1704
1705     AFSAcquireExcl( &pDevExt->Specific.Library.QueueLock,
1706                     TRUE);
1707
1708     lCount = InterlockedIncrement( &pDevExt->Specific.Library.QueueItemCount);
1709
1710     AFSDbgLogMsg( AFS_SUBSYSTEM_WORKER_PROCESSING,
1711                   AFS_TRACE_LEVEL_VERBOSE,
1712                   "AFSInsertWorkitem Inserting work item %08lX Count %08lX\n",
1713                   WorkItem,
1714                   lCount);
1715
1716     if( pDevExt->Specific.Library.QueueTail != NULL) // queue already has nodes
1717     {
1718
1719         pDevExt->Specific.Library.QueueTail->next = WorkItem;
1720     }
1721     else // first node
1722     {
1723
1724         pDevExt->Specific.Library.QueueHead = WorkItem;
1725     }
1726
1727     WorkItem->next = NULL;
1728     pDevExt->Specific.Library.QueueTail = WorkItem;
1729
1730     // indicate that the queue has nodes
1731     KeSetEvent( &(pDevExt->Specific.Library.WorkerQueueHasItems),
1732                 0,
1733                 FALSE);
1734
1735     AFSReleaseResource( &pDevExt->Specific.Library.QueueLock);
1736
1737     return ntStatus;
1738 }
1739
1740 NTSTATUS
1741 AFSInsertIOWorkitem( IN AFSWorkItem *WorkItem)
1742 {
1743
1744     NTSTATUS ntStatus = STATUS_SUCCESS;
1745     AFSDeviceExt *pDevExt = NULL;
1746     LONG lCount;
1747
1748     pDevExt = (AFSDeviceExt *)AFSLibraryDeviceObject->DeviceExtension;
1749
1750     AFSDbgLogMsg( AFS_SUBSYSTEM_LOCK_PROCESSING,
1751                   AFS_TRACE_LEVEL_VERBOSE,
1752                   "AFSInsertIOWorkitem Acquiring Control QueueLock lock %08lX EXCL %08lX\n",
1753                   &pDevExt->Specific.Library.IOQueueLock,
1754                   PsGetCurrentThread());
1755
1756     AFSAcquireExcl( &pDevExt->Specific.Library.IOQueueLock,
1757                     TRUE);
1758
1759     lCount = InterlockedIncrement( &pDevExt->Specific.Library.IOQueueItemCount);
1760
1761     AFSDbgLogMsg( AFS_SUBSYSTEM_WORKER_PROCESSING,
1762                   AFS_TRACE_LEVEL_VERBOSE,
1763                   "AFSInsertWorkitem Inserting IO work item %08lX Count %08lX\n",
1764                   WorkItem,
1765                   lCount);
1766
1767     if( pDevExt->Specific.Library.IOQueueTail != NULL) // queue already has nodes
1768     {
1769
1770         pDevExt->Specific.Library.IOQueueTail->next = WorkItem;
1771     }
1772     else // first node
1773     {
1774
1775         pDevExt->Specific.Library.IOQueueHead = WorkItem;
1776     }
1777
1778     WorkItem->next = NULL;
1779     pDevExt->Specific.Library.IOQueueTail = WorkItem;
1780
1781     // indicate that the queue has nodes
1782     KeSetEvent( &(pDevExt->Specific.Library.IOWorkerQueueHasItems),
1783                 0,
1784                 FALSE);
1785
1786     AFSReleaseResource( &pDevExt->Specific.Library.IOQueueLock);
1787
1788     return ntStatus;
1789 }
1790
1791 NTSTATUS
1792 AFSInsertWorkitemAtHead( IN AFSWorkItem *WorkItem)
1793 {
1794
1795     NTSTATUS ntStatus = STATUS_SUCCESS;
1796     AFSDeviceExt *pDevExt = NULL;
1797     LONG lCount;
1798
1799     pDevExt = (AFSDeviceExt *)AFSLibraryDeviceObject->DeviceExtension;
1800
1801     AFSDbgLogMsg( AFS_SUBSYSTEM_LOCK_PROCESSING,
1802                   AFS_TRACE_LEVEL_VERBOSE,
1803                   "AFSInsertWorkitemAtHead Acquiring Control QueueLock lock %08lX EXCL %08lX\n",
1804                   &pDevExt->Specific.Library.QueueLock,
1805                   PsGetCurrentThread());
1806
1807     AFSAcquireExcl( &pDevExt->Specific.Library.QueueLock,
1808                     TRUE);
1809
1810     WorkItem->next = pDevExt->Specific.Library.QueueHead;
1811
1812     pDevExt->Specific.Library.QueueHead = WorkItem;
1813
1814     lCount = InterlockedIncrement( &pDevExt->Specific.Library.QueueItemCount);
1815
1816     AFSDbgLogMsg( AFS_SUBSYSTEM_WORKER_PROCESSING,
1817                   AFS_TRACE_LEVEL_VERBOSE,
1818                   "AFSInsertWorkitemAtHead Inserting work item %08lX Count %08lX\n",
1819                   WorkItem,
1820                   lCount);
1821
1822     //
1823     // indicate that the queue has nodes
1824     //
1825
1826     KeSetEvent( &(pDevExt->Specific.Library.WorkerQueueHasItems),
1827                 0,
1828                 FALSE);
1829
1830     AFSReleaseResource( &pDevExt->Specific.Library.QueueLock);
1831
1832     return ntStatus;
1833 }
1834
1835 AFSWorkItem *
1836 AFSRemoveWorkItem()
1837 {
1838
1839     NTSTATUS ntStatus = STATUS_SUCCESS;
1840     AFSWorkItem        *pWorkItem = NULL;
1841     AFSDeviceExt *pDevExt = NULL;
1842     LONG lCount;
1843
1844     pDevExt = (AFSDeviceExt *)AFSLibraryDeviceObject->DeviceExtension;
1845
1846     AFSDbgLogMsg( AFS_SUBSYSTEM_LOCK_PROCESSING,
1847                   AFS_TRACE_LEVEL_VERBOSE,
1848                   "AFSRemoveWorkItem Acquiring Control QueueLock lock %08lX EXCL %08lX\n",
1849                   &pDevExt->Specific.Library.QueueLock,
1850                   PsGetCurrentThread());
1851
1852     AFSAcquireExcl( &pDevExt->Specific.Library.QueueLock,
1853                     TRUE);
1854
1855     if( pDevExt->Specific.Library.QueueHead != NULL) // queue has nodes
1856     {
1857
1858         pWorkItem = pDevExt->Specific.Library.QueueHead;
1859
1860         lCount = InterlockedDecrement( &pDevExt->Specific.Library.QueueItemCount);
1861
1862         AFSDbgLogMsg( AFS_SUBSYSTEM_WORKER_PROCESSING,
1863                       AFS_TRACE_LEVEL_VERBOSE,
1864                       "AFSRemoveWorkItem Removing work item %08lX Count %08lX Thread %08lX\n",
1865                       pWorkItem,
1866                       lCount,
1867                       PsGetCurrentThreadId());
1868
1869         pDevExt->Specific.Library.QueueHead = pDevExt->Specific.Library.QueueHead->next;
1870
1871         if( pDevExt->Specific.Library.QueueHead == NULL) // if queue just became empty
1872         {
1873
1874             pDevExt->Specific.Library.QueueTail = NULL;
1875         }
1876         else
1877         {
1878
1879             //
1880             // Wake up another worker
1881             //
1882
1883             KeSetEvent( &(pDevExt->Specific.Library.WorkerQueueHasItems),
1884                         0,
1885                         FALSE);
1886         }
1887     }
1888
1889     AFSReleaseResource( &pDevExt->Specific.Library.QueueLock);
1890
1891     return pWorkItem;
1892 }
1893
1894 AFSWorkItem *
1895 AFSRemoveIOWorkItem()
1896 {
1897
1898     NTSTATUS ntStatus = STATUS_SUCCESS;
1899     AFSWorkItem        *pWorkItem = NULL;
1900     AFSDeviceExt *pDevExt = NULL;
1901     LONG lCount;
1902
1903     pDevExt = (AFSDeviceExt *)AFSLibraryDeviceObject->DeviceExtension;
1904
1905     AFSDbgLogMsg( AFS_SUBSYSTEM_LOCK_PROCESSING,
1906                   AFS_TRACE_LEVEL_VERBOSE,
1907                   "AFSRemoveIOWorkItem Acquiring Control QueueLock lock %08lX EXCL %08lX\n",
1908                   &pDevExt->Specific.Library.IOQueueLock,
1909                   PsGetCurrentThread());
1910
1911     AFSAcquireExcl( &pDevExt->Specific.Library.IOQueueLock,
1912                     TRUE);
1913
1914     if( pDevExt->Specific.Library.IOQueueHead != NULL) // queue has nodes
1915     {
1916
1917         pWorkItem = pDevExt->Specific.Library.IOQueueHead;
1918
1919         lCount = InterlockedDecrement( &pDevExt->Specific.Library.IOQueueItemCount);
1920
1921         AFSDbgLogMsg( AFS_SUBSYSTEM_WORKER_PROCESSING,
1922                       AFS_TRACE_LEVEL_VERBOSE,
1923                       "AFSRemoveWorkItem Removing work item %08lX Count %08lX Thread %08lX\n",
1924                       pWorkItem,
1925                       lCount,
1926                       PsGetCurrentThreadId());
1927
1928         pDevExt->Specific.Library.IOQueueHead = pDevExt->Specific.Library.IOQueueHead->next;
1929
1930         if( pDevExt->Specific.Library.IOQueueHead == NULL) // if queue just became empty
1931         {
1932
1933             pDevExt->Specific.Library.IOQueueTail = NULL;
1934         }
1935         else
1936         {
1937
1938             //
1939             // Wake up another worker
1940             //
1941
1942             KeSetEvent( &(pDevExt->Specific.Library.IOWorkerQueueHasItems),
1943                         0,
1944                         FALSE);
1945         }
1946     }
1947
1948     AFSReleaseResource( &pDevExt->Specific.Library.IOQueueLock);
1949
1950     return pWorkItem;
1951 }
1952
1953 NTSTATUS
1954 AFSQueueWorkerRequest( IN AFSWorkItem *WorkItem)
1955 {
1956
1957     NTSTATUS ntStatus = STATUS_SUCCESS;
1958     AFSDeviceExt *pDevExt = NULL;
1959     BOOLEAN bWait = BooleanFlagOn( WorkItem->RequestFlags, AFS_SYNCHRONOUS_REQUEST);
1960
1961     //
1962     // Submit the work item to the worker
1963     //
1964
1965     ntStatus = AFSInsertWorkitem( WorkItem);
1966
1967     if( bWait)
1968     {
1969
1970         //
1971         // Sync request so block on the work item event
1972         //
1973
1974         ntStatus = KeWaitForSingleObject( &WorkItem->Event,
1975                                           Executive,
1976                                           KernelMode,
1977                                           FALSE,
1978                                           NULL);
1979     }
1980
1981     return ntStatus;
1982 }
1983
1984 NTSTATUS
1985 AFSQueueIOWorkerRequest( IN AFSWorkItem *WorkItem)
1986 {
1987
1988     NTSTATUS ntStatus = STATUS_SUCCESS;
1989     AFSDeviceExt *pDevExt = NULL;
1990     BOOLEAN bWait = BooleanFlagOn( WorkItem->RequestFlags, AFS_SYNCHRONOUS_REQUEST);
1991
1992     //
1993     // Submit the work item to the worker
1994     //
1995
1996     ntStatus = AFSInsertIOWorkitem( WorkItem);
1997
1998     if( bWait)
1999     {
2000
2001         //
2002         // Sync request so block on the work item event
2003         //
2004
2005         ntStatus = KeWaitForSingleObject( &WorkItem->Event,
2006                                           Executive,
2007                                           KernelMode,
2008                                           FALSE,
2009                                           NULL);
2010     }
2011
2012     return ntStatus;
2013 }
2014
2015 NTSTATUS
2016 AFSQueueWorkerRequestAtHead( IN AFSWorkItem *WorkItem)
2017 {
2018
2019     NTSTATUS ntStatus = STATUS_SUCCESS;
2020     AFSDeviceExt *pDevExt = NULL;
2021     BOOLEAN bWait = BooleanFlagOn( WorkItem->RequestFlags, AFS_SYNCHRONOUS_REQUEST);
2022
2023     //
2024     // Submit the work item to the worker
2025     //
2026
2027     ntStatus = AFSInsertWorkitemAtHead( WorkItem);
2028
2029     if( bWait)
2030     {
2031
2032         //
2033         // Sync request so block on the work item event
2034         //
2035
2036         ntStatus = KeWaitForSingleObject( &WorkItem->Event,
2037                                           Executive,
2038                                           KernelMode,
2039                                           FALSE,
2040                                           NULL);
2041     }
2042
2043     return ntStatus;
2044 }
2045
2046 NTSTATUS
2047 AFSQueueFlushExtents( IN AFSFcb *Fcb,
2048                       IN GUID *AuthGroup)
2049 {
2050
2051     NTSTATUS ntStatus = STATUS_SUCCESS;
2052     AFSDeviceExt *pRDRDeviceExt = (AFSDeviceExt *)AFSRDRDeviceObject->DeviceExtension;
2053     AFSWorkItem *pWorkItem = NULL;
2054     LONG lCount;
2055
2056     __try
2057     {
2058
2059         AFSDbgLogMsg( AFS_SUBSYSTEM_WORKER_PROCESSING,
2060                       AFS_TRACE_LEVEL_VERBOSE,
2061                       "AFSQueueFlushExtents Queuing request for FID %08lX-%08lX-%08lX-%08lX\n",
2062                       Fcb->ObjectInformation->FileId.Cell,
2063                       Fcb->ObjectInformation->FileId.Volume,
2064                       Fcb->ObjectInformation->FileId.Vnode,
2065                       Fcb->ObjectInformation->FileId.Unique);
2066
2067         //
2068         // Increment our flush count here just to keep the number of items in the
2069         // queue down. We'll decrement it just below.
2070         //
2071
2072         lCount = InterlockedIncrement( &Fcb->Specific.File.QueuedFlushCount);
2073
2074         if( lCount > 3)
2075         {
2076
2077             AFSDbgLogMsg( AFS_SUBSYSTEM_WORKER_PROCESSING,
2078                           AFS_TRACE_LEVEL_VERBOSE,
2079                           "AFSQueueFlushExtents Max queued items for FID %08lX-%08lX-%08lX-%08lX\n",
2080                           Fcb->ObjectInformation->FileId.Cell,
2081                           Fcb->ObjectInformation->FileId.Volume,
2082                           Fcb->ObjectInformation->FileId.Vnode,
2083                           Fcb->ObjectInformation->FileId.Unique);
2084
2085             try_return( ntStatus);
2086         }
2087
2088         if( BooleanFlagOn( pRDRDeviceExt->DeviceFlags, AFS_DEVICE_FLAG_REDIRECTOR_SHUTDOWN))
2089         {
2090
2091             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2092                           AFS_TRACE_LEVEL_ERROR,
2093                           "AFSQueueFlushExtents Failing request, in shutdown\n");
2094
2095             try_return( ntStatus = STATUS_TOO_LATE);
2096         }
2097
2098         //
2099         // Allocate our request structure and send it to the worker
2100         //
2101
2102         pWorkItem = (AFSWorkItem *)AFSLibExAllocatePoolWithTag( NonPagedPool,
2103                                                                 sizeof( AFSWorkItem),
2104                                                                 AFS_WORK_ITEM_TAG);
2105
2106         if( pWorkItem == NULL)
2107         {
2108
2109             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2110                           AFS_TRACE_LEVEL_ERROR,
2111                           "AFSQueueFlushExtents Failed to allocate work item\n");
2112
2113             try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
2114         }
2115
2116         RtlZeroMemory( pWorkItem,
2117                        sizeof( AFSWorkItem));
2118
2119         pWorkItem->Size = sizeof( AFSWorkItem);
2120
2121         pWorkItem->ProcessID = (ULONGLONG)PsGetCurrentProcessId();
2122
2123         pWorkItem->RequestType = AFS_WORK_FLUSH_FCB;
2124
2125         if ( AuthGroup == NULL)
2126         {
2127
2128             RtlZeroMemory( &pWorkItem->AuthGroup,
2129                            sizeof( GUID));
2130
2131             ntStatus = AFSRetrieveValidAuthGroup( Fcb,
2132                                                   NULL,
2133                                                   TRUE,
2134                                                   &pWorkItem->AuthGroup);
2135         }
2136         else
2137         {
2138             RtlCopyMemory( &pWorkItem->AuthGroup,
2139                            AuthGroup,
2140                            sizeof( GUID));
2141         }
2142
2143         pWorkItem->Specific.Fcb.Fcb = Fcb;
2144
2145         lCount = InterlockedIncrement( &Fcb->OpenReferenceCount);
2146
2147         AFSDbgLogMsg( AFS_SUBSYSTEM_FCB_REF_COUNTING,
2148                       AFS_TRACE_LEVEL_VERBOSE,
2149                       "AFSQueueFlushExtents Increment count on Fcb %08lX Cnt %d\n",
2150                       Fcb,
2151                       lCount);
2152
2153         AFSDbgLogMsg( AFS_SUBSYSTEM_WORKER_PROCESSING,
2154                       AFS_TRACE_LEVEL_VERBOSE,
2155                       "AFSQueueFlushExtents Workitem %08lX for FID %08lX-%08lX-%08lX-%08lX\n",
2156                       pWorkItem,
2157                       Fcb->ObjectInformation->FileId.Cell,
2158                       Fcb->ObjectInformation->FileId.Volume,
2159                       Fcb->ObjectInformation->FileId.Vnode,
2160                       Fcb->ObjectInformation->FileId.Unique);
2161
2162         ntStatus = AFSQueueWorkerRequest( pWorkItem);
2163
2164 try_exit:
2165
2166         AFSDbgLogMsg( AFS_SUBSYSTEM_WORKER_PROCESSING,
2167                       AFS_TRACE_LEVEL_VERBOSE,
2168                       "AFSQueueFlushExtents Request complete Status %08lX FID %08lX-%08lX-%08lX-%08lX\n",
2169                       Fcb->ObjectInformation->FileId.Cell,
2170                       Fcb->ObjectInformation->FileId.Volume,
2171                       Fcb->ObjectInformation->FileId.Vnode,
2172                       Fcb->ObjectInformation->FileId.Unique,
2173                       ntStatus);
2174
2175         //
2176         // Remove the count we added above
2177         //
2178
2179         lCount = InterlockedDecrement( &Fcb->Specific.File.QueuedFlushCount);
2180
2181         if( lCount == 0)
2182         {
2183
2184             KeSetEvent( &Fcb->NPFcb->Specific.File.QueuedFlushEvent,
2185                         0,
2186                         FALSE);
2187         }
2188
2189         if( !NT_SUCCESS( ntStatus))
2190         {
2191
2192             if( pWorkItem != NULL)
2193             {
2194
2195                 lCount = InterlockedDecrement( &Fcb->OpenReferenceCount);
2196
2197                 ExFreePoolWithTag( pWorkItem, AFS_WORK_ITEM_TAG);
2198             }
2199
2200             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2201                           AFS_TRACE_LEVEL_ERROR,
2202                           "AFSQueueFlushExtents Failed to queue request Status %08lX\n", ntStatus);
2203         }
2204     }
2205     __except( AFSExceptionFilter( __FUNCTION__, GetExceptionCode(), GetExceptionInformation()) )
2206     {
2207
2208         AFSDbgLogMsg( 0,
2209                       0,
2210                       "EXCEPTION - AFSQueueFlushExtents\n");
2211
2212         AFSDumpTraceFilesFnc();
2213     }
2214
2215     return ntStatus;
2216 }
2217
2218 NTSTATUS
2219 AFSQueueGlobalRootEnumeration()
2220 {
2221
2222     NTSTATUS ntStatus = STATUS_SUCCESS;
2223     AFSWorkItem *pWorkItem = NULL;
2224
2225     __try
2226     {
2227
2228         pWorkItem = (AFSWorkItem *) AFSLibExAllocatePoolWithTag( NonPagedPool,
2229                                                                  sizeof(AFSWorkItem),
2230                                                                  AFS_WORK_ITEM_TAG);
2231         if (NULL == pWorkItem)
2232         {
2233
2234             AFSDbgLogMsg( AFS_SUBSYSTEM_IO_PROCESSING,
2235                           AFS_TRACE_LEVEL_ERROR,
2236                           "AFSQueueGlobalRootEnumeration Failed to allocate work item\n");
2237
2238             try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES );
2239         }
2240
2241         RtlZeroMemory( pWorkItem,
2242                        sizeof(AFSWorkItem));
2243
2244         pWorkItem->Size = sizeof( AFSWorkItem);
2245
2246         pWorkItem->RequestType = AFS_WORK_ENUMERATE_GLOBAL_ROOT;
2247
2248         AFSDbgLogMsg( AFS_SUBSYSTEM_WORKER_PROCESSING,
2249                       AFS_TRACE_LEVEL_VERBOSE,
2250                       "AFSQueueGlobalRootEnumeration Workitem %08lX\n",
2251                       pWorkItem);
2252
2253         ntStatus = AFSQueueWorkerRequest( pWorkItem);
2254
2255 try_exit:
2256
2257         AFSDbgLogMsg( AFS_SUBSYSTEM_WORKER_PROCESSING,
2258                       AFS_TRACE_LEVEL_VERBOSE,
2259                       "AFSQueueGlobalRootEnumeration Request complete Status %08lX\n",
2260                       ntStatus);
2261
2262         if( !NT_SUCCESS( ntStatus))
2263         {
2264
2265             if( pWorkItem != NULL)
2266             {
2267
2268                 ExFreePoolWithTag( pWorkItem, AFS_WORK_ITEM_TAG);
2269             }
2270
2271             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2272                           AFS_TRACE_LEVEL_ERROR,
2273                           "AFSQueueGlobalRootEnumeration Failed to queue request Status %08lX\n",
2274                           ntStatus);
2275         }
2276     }
2277     __except( AFSExceptionFilter( __FUNCTION__, GetExceptionCode(), GetExceptionInformation()) )
2278     {
2279
2280         AFSDbgLogMsg( 0,
2281                       0,
2282                       "EXCEPTION - AFSQueueGlobalRootEnumeration\n");
2283
2284         AFSDumpTraceFilesFnc();
2285     }
2286
2287     return ntStatus;
2288 }
2289
2290 NTSTATUS
2291 AFSQueueStartIos( IN PFILE_OBJECT CacheFileObject,
2292                   IN UCHAR FunctionCode,
2293                   IN ULONG RequestFlags,
2294                   IN AFSIoRun *IoRuns,
2295                   IN ULONG RunCount,
2296                   IN AFSGatherIo *GatherIo)
2297 {
2298
2299     NTSTATUS ntStatus = STATUS_SUCCESS;
2300     AFSDeviceExt *pRDRDeviceExt = (AFSDeviceExt *)AFSRDRDeviceObject->DeviceExtension;
2301     AFSWorkItem *pWorkItem = NULL;
2302
2303     __try
2304     {
2305
2306         if( BooleanFlagOn( pRDRDeviceExt->DeviceFlags, AFS_DEVICE_FLAG_REDIRECTOR_SHUTDOWN))
2307         {
2308
2309             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2310                           AFS_TRACE_LEVEL_ERROR,
2311                           "AFSQueueStartIos Failing request, in shutdown\n");
2312
2313             try_return( ntStatus = STATUS_TOO_LATE);
2314         }
2315
2316         //
2317         // Allocate our request structure and send it to the worker
2318         //
2319
2320         pWorkItem = (AFSWorkItem *)AFSLibExAllocatePoolWithTag( NonPagedPool,
2321                                                                 sizeof( AFSWorkItem),
2322                                                                 AFS_WORK_ITEM_TAG);
2323
2324         if( pWorkItem == NULL)
2325         {
2326
2327             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2328                           AFS_TRACE_LEVEL_ERROR,
2329                           "AFSQueueStartIos Failed to allocate work item\n");
2330
2331             try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES);
2332         }
2333
2334         RtlZeroMemory( pWorkItem,
2335                        sizeof( AFSWorkItem));
2336
2337         KeInitializeEvent( &pWorkItem->Event,
2338                            NotificationEvent,
2339                            FALSE);
2340
2341         pWorkItem->Size = sizeof( AFSWorkItem);
2342
2343         pWorkItem->ProcessID = (ULONGLONG)PsGetCurrentProcessId();
2344
2345         pWorkItem->RequestType = AFS_WORK_START_IOS;
2346
2347         pWorkItem->Specific.CacheAccess.CacheFileObject = CacheFileObject;
2348
2349         pWorkItem->Specific.CacheAccess.FunctionCode = FunctionCode;
2350
2351         pWorkItem->Specific.CacheAccess.RequestFlags = RequestFlags;
2352
2353         pWorkItem->Specific.CacheAccess.IoRuns = IoRuns;
2354
2355         pWorkItem->Specific.CacheAccess.RunCount = RunCount;
2356
2357         pWorkItem->Specific.CacheAccess.GatherIo = GatherIo;
2358
2359         AFSDbgLogMsg( AFS_SUBSYSTEM_WORKER_PROCESSING,
2360                       AFS_TRACE_LEVEL_VERBOSE,
2361                       "AFSQueueStartIos Queuing IO Workitem %08lX\n",
2362                       pWorkItem);
2363
2364         ntStatus = AFSQueueIOWorkerRequest( pWorkItem);
2365
2366 try_exit:
2367
2368         AFSDbgLogMsg( AFS_SUBSYSTEM_WORKER_PROCESSING,
2369                       AFS_TRACE_LEVEL_VERBOSE,
2370                       "AFSQueueStartIos Request complete Status %08lX\n",
2371                       ntStatus);
2372
2373         if( !NT_SUCCESS( ntStatus))
2374         {
2375
2376             if( pWorkItem != NULL)
2377             {
2378
2379                 ExFreePoolWithTag( pWorkItem, AFS_WORK_ITEM_TAG);
2380             }
2381         }
2382     }
2383     __except( AFSExceptionFilter( __FUNCTION__, GetExceptionCode(), GetExceptionInformation()) )
2384     {
2385
2386         AFSDbgLogMsg( 0,
2387                       0,
2388                       "EXCEPTION - AFSQueueStartIos\n");
2389
2390         AFSDumpTraceFilesFnc();
2391     }
2392
2393     return ntStatus;
2394 }
2395
2396 NTSTATUS
2397 AFSQueueInvalidateObject( IN AFSObjectInfoCB *ObjectInfo,
2398                           IN ULONG InvalidateReason)
2399 {
2400
2401     NTSTATUS ntStatus = STATUS_SUCCESS;
2402     AFSWorkItem *pWorkItem = NULL;
2403
2404     __try
2405     {
2406
2407         pWorkItem = (AFSWorkItem *) AFSLibExAllocatePoolWithTag( NonPagedPool,
2408                                                                  sizeof(AFSWorkItem),
2409                                                                  AFS_WORK_ITEM_TAG);
2410         if (NULL == pWorkItem)
2411         {
2412
2413             AFSDbgLogMsg( AFS_SUBSYSTEM_IO_PROCESSING,
2414                           AFS_TRACE_LEVEL_ERROR,
2415                           "AFSQueueInvalidateObject Failed to allocate work item\n");
2416
2417             try_return( ntStatus = STATUS_INSUFFICIENT_RESOURCES );
2418         }
2419
2420         RtlZeroMemory( pWorkItem,
2421                        sizeof(AFSWorkItem));
2422
2423         pWorkItem->Size = sizeof( AFSWorkItem);
2424
2425         pWorkItem->RequestType = AFS_WORK_INVALIDATE_OBJECT;
2426
2427         pWorkItem->Specific.Invalidate.ObjectInfo = ObjectInfo;
2428
2429         pWorkItem->Specific.Invalidate.InvalidateReason = InvalidateReason;
2430
2431         AFSDbgLogMsg( AFS_SUBSYSTEM_WORKER_PROCESSING,
2432                       AFS_TRACE_LEVEL_VERBOSE,
2433                       "AFSQueueInvalidateObject Workitem %08lX\n",
2434                       pWorkItem);
2435
2436         ntStatus = AFSQueueWorkerRequest( pWorkItem);
2437
2438 try_exit:
2439
2440         AFSDbgLogMsg( AFS_SUBSYSTEM_WORKER_PROCESSING,
2441                       AFS_TRACE_LEVEL_VERBOSE,
2442                       "AFSQueueInvalidateObject Request complete Status %08lX\n",
2443                       ntStatus);
2444
2445         if( !NT_SUCCESS( ntStatus))
2446         {
2447
2448             if( pWorkItem != NULL)
2449             {
2450                 ExFreePoolWithTag( pWorkItem, AFS_WORK_ITEM_TAG);
2451             }
2452
2453             AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
2454                           AFS_TRACE_LEVEL_ERROR,
2455                           "AFSQueueInvalidateObject Failed to queue request Status %08lX\n",
2456                           ntStatus);
2457         }
2458     }
2459     __except( AFSExceptionFilter( __FUNCTION__, GetExceptionCode(), GetExceptionInformation()) )
2460     {
2461
2462         AFSDbgLogMsg( 0,
2463                       0,
2464                       "EXCEPTION - AFSQueueInvalidateObject\n");
2465
2466         AFSDumpTraceFilesFnc();
2467     }
2468
2469     return ntStatus;
2470 }