| 613 | } |
| 614 | |
| 615 | NTSTATUS |
| 616 | Ex2ProcessUserPerfStat( |
| 617 | IN PEXT2_IRP_CONTEXT IrpContext, |
| 618 | IN PEXT2_QUERY_PERFSTAT QueryPerf, |
| 619 | IN ULONG Length |
| 620 | ) |
| 621 | { |
| 622 | PEXT2_VCB Vcb = NULL; |
| 623 | PDEVICE_OBJECT DeviceObject = NULL; |
| 624 | |
| 625 | BOOLEAN GlobalDataResourceAcquired = FALSE; |
| 626 | NTSTATUS Status = STATUS_SUCCESS; |
| 627 | |
| 628 | __try { |
| 629 | |
| 630 | ASSERT(IrpContext != NULL); |
| 631 | ASSERT((IrpContext->Identifier.Type == EXT2ICX) && |
| 632 | (IrpContext->Identifier.Size == sizeof(EXT2_IRP_CONTEXT))); |
| 633 | |
| 634 | DeviceObject = IrpContext->DeviceObject; |
| 635 | if (IsExt2FsDevice(DeviceObject)) { |
| 636 | |
| 637 | if (QueryPerf->Magic != EXT2_QUERY_PERFSTAT_MAGIC) { |
| 638 | Status = STATUS_INVALID_PARAMETER; |
| 639 | __leave; |
| 640 | } |
| 641 | |
| 642 | if (QueryPerf->Command != IOCTL_APP_QUERY_PERFSTAT) { |
| 643 | Status = STATUS_INVALID_PARAMETER; |
| 644 | __leave; |
| 645 | } |
| 646 | |
| 647 | if (Length != EXT2_QUERY_PERFSTAT_SZV1 && |
| 648 | Length != EXT2_QUERY_PERFSTAT_SZV2) { |
| 649 | Status = STATUS_INVALID_PARAMETER; |
| 650 | __leave; |
| 651 | } |
| 652 | |
| 653 | ExAcquireResourceSharedLite(&Ext2Global->Resource, TRUE); |
| 654 | GlobalDataResourceAcquired = TRUE; |
| 655 | |
| 656 | if (Length == EXT2_QUERY_PERFSTAT_SZV2) { |
| 657 | QueryPerf->Flags = EXT2_QUERY_PERFSTAT_VER2; |
| 658 | QueryPerf->PerfStatV2 = Ext2Global->PerfStat; |
| 659 | } else { |
| 660 | memcpy(&QueryPerf->PerfStatV1.Irps[0], &Ext2Global->PerfStat.Irps[0], |
| 661 | FIELD_OFFSET(EXT2_PERF_STATISTICS_V1, Unit)); |
| 662 | memcpy(&QueryPerf->PerfStatV1.Unit, &Ext2Global->PerfStat.Unit, |
| 663 | sizeof(EXT2_STAT_ARRAY_V1)); |
| 664 | memcpy(&QueryPerf->PerfStatV1.Current, &Ext2Global->PerfStat.Current, |
| 665 | sizeof(EXT2_STAT_ARRAY_V1)); |
| 666 | memcpy(&QueryPerf->PerfStatV1.Size, &Ext2Global->PerfStat.Size, |
| 667 | sizeof(EXT2_STAT_ARRAY_V1)); |
| 668 | memcpy(&QueryPerf->PerfStatV1.Total, &Ext2Global->PerfStat.Total, |
| 669 | sizeof(EXT2_STAT_ARRAY_V1)); |
| 670 | } |
| 671 | |
| 672 | } else { |
no test coverage detected