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[FASTFAT]

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Start implementing statistics support. So far, everything is just nulled.
These 0 can be properly queried with fsutil fsinfo statistics.

svn path=/trunk/; revision=75937
This commit is contained in:
Pierre Schweitzer 2017-09-24 08:56:06 +00:00
parent 1ffd7e141b
commit 1fac1ca781
3 changed files with 74 additions and 0 deletions
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64
reactos/drivers/filesystems/fastfat/fsctl.c
View file

@ -532,6 +532,7 @@ VfatMount(
UNICODE_STRING VolumeLabelU;
ULONG HashTableSize;
ULONG eocMark;
ULONG i;
FATINFO FatInfo;
DPRINT("VfatMount(IrpContext %p)\n", IrpContext);
@ -669,6 +670,23 @@ VfatMount(
goto ByeBye;
}
DeviceExt->Statistics = ExAllocatePoolWithTag(NonPagedPool,
sizeof(STATISTICS) * VfatGlobalData->NumberProcessors,
TAG_VFAT);
if (DeviceExt->Statistics == NULL)
{
Status = STATUS_INSUFFICIENT_RESOURCES;
goto ByeBye;
}
RtlZeroMemory(DeviceExt->Statistics, sizeof(STATISTICS) * VfatGlobalData->NumberProcessors);
for (i = 0; i < VfatGlobalData->NumberProcessors; ++i)
{
DeviceExt->Statistics[i].Base.FileSystemType = FILESYSTEM_STATISTICS_TYPE_FAT;
DeviceExt->Statistics[i].Base.Version = 1;
DeviceExt->Statistics[i].Base.SizeOfCompleteStructure = sizeof(STATISTICS);
}
DeviceExt->FATFileObject = IoCreateStreamFileObject(NULL, DeviceExt->StorageDevice);
Fcb = vfatNewFCB(DeviceExt, &NameU);
if (Fcb == NULL)
@ -776,6 +794,8 @@ ByeBye:
ObDereferenceObject (DeviceExt->FATFileObject);
if (DeviceExt && DeviceExt->SpareVPB)
ExFreePoolWithTag(DeviceExt->SpareVPB, TAG_VFAT);
if (DeviceExt && DeviceExt->Statistics)
ExFreePoolWithTag(DeviceExt->Statistics, TAG_VFAT);
if (Fcb)
vfatDestroyFCB(Fcb);
if (Ccb)
@ -1188,6 +1208,46 @@ VfatDismountVolume(
return STATUS_SUCCESS;
}
static
NTSTATUS
VfatGetStatistics(
PVFAT_IRP_CONTEXT IrpContext)
{
PVOID Buffer;
ULONG Length;
NTSTATUS Status;
PDEVICE_EXTENSION DeviceExt;
DeviceExt = IrpContext->DeviceExt;
Length = IrpContext->Stack->Parameters.FileSystemControl.OutputBufferLength;
Buffer = IrpContext->Irp->AssociatedIrp.SystemBuffer;
if (Length < sizeof(FILESYSTEM_STATISTICS))
{
return STATUS_BUFFER_TOO_SMALL;
}
if (Buffer == NULL)
{
return STATUS_INVALID_USER_BUFFER;
}
if (Length >= sizeof(STATISTICS) * VfatGlobalData->NumberProcessors)
{
Length = sizeof(STATISTICS) * VfatGlobalData->NumberProcessors;
Status = STATUS_SUCCESS;
}
else
{
Status = STATUS_BUFFER_OVERFLOW;
}
RtlCopyMemory(Buffer, DeviceExt->Statistics, Length);
IrpContext->Irp->IoStatus.Information = Length;
return Status;
}
/*
* FUNCTION: File system control
*/
@ -1243,6 +1303,10 @@ VfatFileSystemControl(
Status = VfatDismountVolume(IrpContext);
break;
case FSCTL_FILESYSTEM_GET_STATISTICS:
Status = VfatGetStatistics(IrpContext);
break;
default:
Status = STATUS_INVALID_DEVICE_REQUEST;
}

1
reactos/drivers/filesystems/fastfat/iface.c
View file

@ -91,6 +91,7 @@ DriverEntry(
RtlZeroMemory (VfatGlobalData, sizeof(VFAT_GLOBAL_DATA));
VfatGlobalData->DriverObject = DriverObject;
VfatGlobalData->DeviceObject = DeviceObject;
VfatGlobalData->NumberProcessors = KeNumberProcessors;
/* Enable this to enter the debugger when file system corruption
* has been detected:
VfatGlobalData->Flags = VFAT_BREAK_ON_CORRUPTION; */

9
reactos/drivers/filesystems/fastfat/vfat.h
View file

@ -289,6 +289,13 @@ typedef struct _VFAT_DISPATCH
PGET_NEXT_DIR_ENTRY GetNextDirEntry;
} VFAT_DISPATCH, *PVFAT_DISPATCH;
#define STATISTICS_SIZE_NO_PAD (sizeof(FILESYSTEM_STATISTICS) + sizeof(FAT_STATISTICS))
typedef struct _STATISTICS {
FILESYSTEM_STATISTICS Base;
FAT_STATISTICS Fat;
UCHAR Pad[((STATISTICS_SIZE_NO_PAD + 0x3f) & ~0x3f) - STATISTICS_SIZE_NO_PAD];
} STATISTICS, *PSTATISTICS;
typedef struct DEVICE_EXTENSION
{
ERESOURCE DirResource;
@ -308,6 +315,7 @@ typedef struct DEVICE_EXTENSION
BOOLEAN AvailableClustersValid;
ULONG Flags;
struct _VFATFCB *VolumeFcb;
PSTATISTICS Statistics;
/* Pointers to functions for manipulating FAT. */
PGET_NEXT_CLUSTER GetNextCluster;
@ -383,6 +391,7 @@ typedef struct
PDRIVER_OBJECT DriverObject;
PDEVICE_OBJECT DeviceObject;
ULONG Flags;
ULONG NumberProcessors;
ERESOURCE VolumeListLock;
LIST_ENTRY VolumeListHead;
NPAGED_LOOKASIDE_LIST FcbLookasideList;