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sys: IRP_MJ_QUERY_INFORMATION: FileStreamInformation

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This commit is contained in:
Bill Zissimopoulos
2016-09-24 13:59:02 -07:00
parent b06e947e0e
commit 0c810c52fa
9 changed files with 447 additions and 28 deletions
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98
src/sys/file.c
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@ -57,6 +57,11 @@ VOID FspFileNodeSetDirInfo(FSP_FILE_NODE *FileNode, PCVOID Buffer, ULONG Size);
BOOLEAN FspFileNodeTrySetDirInfo(FSP_FILE_NODE *FileNode, PCVOID Buffer, ULONG Size,
ULONG DirInfoChangeNumber);
static VOID FspFileNodeInvalidateDirInfo(FSP_FILE_NODE *FileNode);
BOOLEAN FspFileNodeReferenceStreamInfo(FSP_FILE_NODE *FileNode, PCVOID *PBuffer, PULONG PSize);
VOID FspFileNodeSetStreamInfo(FSP_FILE_NODE *FileNode, PCVOID Buffer, ULONG Size);
BOOLEAN FspFileNodeTrySetStreamInfo(FSP_FILE_NODE *FileNode, PCVOID Buffer, ULONG Size,
ULONG StreamInfoChangeNumber);
static VOID FspFileNodeInvalidateStreamInfo(FSP_FILE_NODE *FileNode);
VOID FspFileNodeNotifyChange(FSP_FILE_NODE *FileNode,
ULONG Filter, ULONG Action);
NTSTATUS FspFileNodeProcessLockIrp(FSP_FILE_NODE *FileNode, PIRP Irp);
@ -97,6 +102,10 @@ NTSTATUS FspFileDescResetDirectoryPattern(FSP_FILE_DESC *FileDesc,
// !#pragma alloc_text(PAGE, FspFileNodeSetDirInfo)
// !#pragma alloc_text(PAGE, FspFileNodeTrySetDirInfo)
// !#pragma alloc_text(PAGE, FspFileNodeInvalidateDirInfo)
// !#pragma alloc_text(PAGE, FspFileNodeReferenceStreamInfo)
// !#pragma alloc_text(PAGE, FspFileNodeSetStreamInfo)
// !#pragma alloc_text(PAGE, FspFileNodeTrySetStreamInfo)
// !#pragma alloc_text(PAGE, FspFileNodeInvalidateStreamInfo)
#pragma alloc_text(PAGE, FspFileNodeNotifyChange)
#pragma alloc_text(PAGE, FspFileNodeProcessLockIrp)
#pragma alloc_text(PAGE, FspFileNodeCompleteLockIrp)
@ -176,7 +185,7 @@ NTSTATUS FspFileNodeCreate(PDEVICE_OBJECT DeviceObject,
ExInitializeResourceLite(&NonPaged->Resource);
ExInitializeResourceLite(&NonPaged->PagingIoResource);
ExInitializeFastMutex(&NonPaged->HeaderFastMutex);
KeInitializeSpinLock(&NonPaged->DirInfoSpinLock);
KeInitializeSpinLock(&NonPaged->NpInfoSpinLock);
RtlZeroMemory(FileNode, sizeof *FileNode + ExtraSize);
FileNode->Header.NodeTypeCode = FspFileNodeFileKind;
@ -211,6 +220,7 @@ VOID FspFileNodeDelete(FSP_FILE_NODE *FileNode)
FsRtlTeardownPerStreamContexts(&FileNode->Header);
FspMetaCacheInvalidateItem(FsvolDeviceExtension->StreamInfoCache, FileNode->NonPaged->StreamInfo);
FspMetaCacheInvalidateItem(FsvolDeviceExtension->DirInfoCache, FileNode->NonPaged->DirInfo);
FspMetaCacheInvalidateItem(FsvolDeviceExtension->SecurityCache, FileNode->Security);
@ -848,7 +858,7 @@ BOOLEAN FspFileNodeReferenceDirInfo(FSP_FILE_NODE *FileNode, PCVOID *PBuffer, PU
FSP_FILE_NODE_NONPAGED *NonPaged = FileNode->NonPaged;
UINT64 DirInfo;
/* no need to acquire the DirInfoSpinLock as the FileNode is acquired */
/* no need to acquire the NpInfoSpinLock as the FileNode is acquired */
DirInfo = NonPaged->DirInfo;
return FspMetaCacheReferenceItemBuffer(FsvolDeviceExtension->DirInfoCache,
@ -865,7 +875,7 @@ VOID FspFileNodeSetDirInfo(FSP_FILE_NODE *FileNode, PCVOID Buffer, ULONG Size)
KIRQL Irql;
UINT64 DirInfo;
/* no need to acquire the DirInfoSpinLock as the FileNode is acquired */
/* no need to acquire the NpInfoSpinLock as the FileNode is acquired */
DirInfo = NonPaged->DirInfo;
FspMetaCacheInvalidateItem(FsvolDeviceExtension->DirInfoCache, DirInfo);
@ -873,10 +883,10 @@ VOID FspFileNodeSetDirInfo(FSP_FILE_NODE *FileNode, PCVOID Buffer, ULONG Size)
FspMetaCacheAddItem(FsvolDeviceExtension->DirInfoCache, Buffer, Size) : 0;
FileNode->DirInfoChangeNumber++;
/* acquire the DirInfoSpinLock to protect against concurrent FspFileNodeInvalidateDirInfo */
KeAcquireSpinLock(&NonPaged->DirInfoSpinLock, &Irql);
/* acquire the NpInfoSpinLock to protect against concurrent FspFileNodeInvalidateDirInfo */
KeAcquireSpinLock(&NonPaged->NpInfoSpinLock, &Irql);
NonPaged->DirInfo = DirInfo;
KeReleaseSpinLock(&NonPaged->DirInfoSpinLock, Irql);
KeReleaseSpinLock(&NonPaged->NpInfoSpinLock, Irql);
}
BOOLEAN FspFileNodeTrySetDirInfo(FSP_FILE_NODE *FileNode, PCVOID Buffer, ULONG Size,
@ -901,14 +911,84 @@ static VOID FspFileNodeInvalidateDirInfo(FSP_FILE_NODE *FileNode)
KIRQL Irql;
UINT64 DirInfo;
/* acquire the DirInfoSpinLock to protect against concurrent FspFileNodeSetDirInfo */
KeAcquireSpinLock(&NonPaged->DirInfoSpinLock, &Irql);
/* acquire the NpInfoSpinLock to protect against concurrent FspFileNodeSetDirInfo */
KeAcquireSpinLock(&NonPaged->NpInfoSpinLock, &Irql);
DirInfo = NonPaged->DirInfo;
KeReleaseSpinLock(&NonPaged->DirInfoSpinLock, Irql);
KeReleaseSpinLock(&NonPaged->NpInfoSpinLock, Irql);
FspMetaCacheInvalidateItem(FsvolDeviceExtension->DirInfoCache, DirInfo);
}
BOOLEAN FspFileNodeReferenceStreamInfo(FSP_FILE_NODE *FileNode, PCVOID *PBuffer, PULONG PSize)
{
// !PAGED_CODE();
FSP_FSVOL_DEVICE_EXTENSION *FsvolDeviceExtension =
FspFsvolDeviceExtension(FileNode->FsvolDeviceObject);
FSP_FILE_NODE_NONPAGED *NonPaged = FileNode->NonPaged;
UINT64 StreamInfo;
/* no need to acquire the NpInfoSpinLock as the FileNode is acquired */
StreamInfo = NonPaged->StreamInfo;
return FspMetaCacheReferenceItemBuffer(FsvolDeviceExtension->StreamInfoCache,
StreamInfo, PBuffer, PSize);
}
VOID FspFileNodeSetStreamInfo(FSP_FILE_NODE *FileNode, PCVOID Buffer, ULONG Size)
{
// !PAGED_CODE();
FSP_FSVOL_DEVICE_EXTENSION *FsvolDeviceExtension =
FspFsvolDeviceExtension(FileNode->FsvolDeviceObject);
FSP_FILE_NODE_NONPAGED *NonPaged = FileNode->NonPaged;
KIRQL Irql;
UINT64 StreamInfo;
/* no need to acquire the NpInfoSpinLock as the FileNode is acquired */
StreamInfo = NonPaged->StreamInfo;
FspMetaCacheInvalidateItem(FsvolDeviceExtension->StreamInfoCache, StreamInfo);
StreamInfo = 0 != Buffer ?
FspMetaCacheAddItem(FsvolDeviceExtension->StreamInfoCache, Buffer, Size) : 0;
FileNode->StreamInfoChangeNumber++;
/* acquire the NpInfoSpinLock to protect against concurrent FspFileNodeInvalidateStreamInfo */
KeAcquireSpinLock(&NonPaged->NpInfoSpinLock, &Irql);
NonPaged->StreamInfo = StreamInfo;
KeReleaseSpinLock(&NonPaged->NpInfoSpinLock, Irql);
}
BOOLEAN FspFileNodeTrySetStreamInfo(FSP_FILE_NODE *FileNode, PCVOID Buffer, ULONG Size,
ULONG StreamInfoChangeNumber)
{
// !PAGED_CODE();
if (FileNode->StreamInfoChangeNumber != StreamInfoChangeNumber)
return FALSE;
FspFileNodeSetStreamInfo(FileNode, Buffer, Size);
return TRUE;
}
static VOID FspFileNodeInvalidateStreamInfo(FSP_FILE_NODE *FileNode)
{
// !PAGED_CODE();
PDEVICE_OBJECT FsvolDeviceObject = FileNode->FsvolDeviceObject;
FSP_FSVOL_DEVICE_EXTENSION *FsvolDeviceExtension = FspFsvolDeviceExtension(FsvolDeviceObject);
FSP_FILE_NODE_NONPAGED *NonPaged = FileNode->NonPaged;
KIRQL Irql;
UINT64 StreamInfo;
/* acquire the NpInfoSpinLock to protect against concurrent FspFileNodeSetStreamInfo */
KeAcquireSpinLock(&NonPaged->NpInfoSpinLock, &Irql);
StreamInfo = NonPaged->StreamInfo;
KeReleaseSpinLock(&NonPaged->NpInfoSpinLock, Irql);
FspMetaCacheInvalidateItem(FsvolDeviceExtension->StreamInfoCache, StreamInfo);
}
VOID FspFileNodeNotifyChange(FSP_FILE_NODE *FileNode,
ULONG Filter, ULONG Action)
{