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sys: FspFileNodeTrySetFileInfoOnOpen

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This commit is contained in:
Bill Zissimopoulos
2017-07-11 14:17:17 -07:00
parent 3073646f29
commit b35bf204db
3 changed files with 42 additions and 1 deletions
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2
src/sys/create.c
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@@ -1098,7 +1098,7 @@ static NTSTATUS FspFsvolCreateTryOpen(PIRP Irp, const FSP_FSCTL_TRANSACT_RSP *Re
return Result;
}
FspFileNodeSetFileInfo(FileNode, FileObject, &Response->Rsp.Create.Opened.FileInfo,
FspFileNodeTrySetFileInfoOnOpen(FileNode, FileObject, &Response->Rsp.Create.Opened.FileInfo,
FILE_CREATED == Response->IoStatus.Information);
if (FlushImage)

2
src/sys/driver.h
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@@ -1350,6 +1350,8 @@ VOID FspFileNodeGetFileInfo(FSP_FILE_NODE *FileNode, FSP_FSCTL_FILE_INFO *FileIn
BOOLEAN FspFileNodeTryGetFileInfo(FSP_FILE_NODE *FileNode, FSP_FSCTL_FILE_INFO *FileInfo);
VOID FspFileNodeSetFileInfo(FSP_FILE_NODE *FileNode, PFILE_OBJECT CcFileObject,
const FSP_FSCTL_FILE_INFO *FileInfo, BOOLEAN TruncateOnClose);
BOOLEAN FspFileNodeTrySetFileInfoOnOpen(FSP_FILE_NODE *FileNode, PFILE_OBJECT CcFileObject,
const FSP_FSCTL_FILE_INFO *FileInfo, BOOLEAN TruncateOnClose);
BOOLEAN FspFileNodeTrySetFileInfo(FSP_FILE_NODE *FileNode, PFILE_OBJECT CcFileObject,
const FSP_FSCTL_FILE_INFO *FileInfo, ULONG InfoChangeNumber);
VOID FspFileNodeInvalidateFileInfo(FSP_FILE_NODE *FileNode);

39
src/sys/file.c
View File

@@ -58,6 +58,8 @@ VOID FspFileNodeGetFileInfo(FSP_FILE_NODE *FileNode, FSP_FSCTL_FILE_INFO *FileIn
BOOLEAN FspFileNodeTryGetFileInfo(FSP_FILE_NODE *FileNode, FSP_FSCTL_FILE_INFO *FileInfo);
VOID FspFileNodeSetFileInfo(FSP_FILE_NODE *FileNode, PFILE_OBJECT CcFileObject,
const FSP_FSCTL_FILE_INFO *FileInfo, BOOLEAN TruncateOnClose);
BOOLEAN FspFileNodeTrySetFileInfoOnOpen(FSP_FILE_NODE *FileNode, PFILE_OBJECT CcFileObject,
const FSP_FSCTL_FILE_INFO *FileInfo, BOOLEAN TruncateOnClose);
BOOLEAN FspFileNodeTrySetFileInfo(FSP_FILE_NODE *FileNode, PFILE_OBJECT CcFileObject,
const FSP_FSCTL_FILE_INFO *FileInfo, ULONG InfoChangeNumber);
VOID FspFileNodeInvalidateFileInfo(FSP_FILE_NODE *FileNode);
@@ -129,6 +131,7 @@ VOID FspFileNodeOplockComplete(PVOID Context, PIRP Irp);
#pragma alloc_text(PAGE, FspFileNodeGetFileInfo)
#pragma alloc_text(PAGE, FspFileNodeTryGetFileInfo)
#pragma alloc_text(PAGE, FspFileNodeSetFileInfo)
#pragma alloc_text(PAGE, FspFileNodeTrySetFileInfoOnOpen)
#pragma alloc_text(PAGE, FspFileNodeTrySetFileInfo)
#pragma alloc_text(PAGE, FspFileNodeInvalidateFileInfo)
#pragma alloc_text(PAGE, FspFileNodeReferenceSecurity)
@@ -1660,6 +1663,42 @@ VOID FspFileNodeSetFileInfo(FSP_FILE_NODE *FileNode, PFILE_OBJECT CcFileObject,
}
}
BOOLEAN FspFileNodeTrySetFileInfoOnOpen(FSP_FILE_NODE *FileNode, PFILE_OBJECT CcFileObject,
const FSP_FSCTL_FILE_INFO *FileInfo, BOOLEAN TruncateOnClose)
{
PAGED_CODE();
BOOLEAN EarlyExit;
FspFsvolDeviceLockContextTable(FileNode->FsvolDeviceObject);
EarlyExit = 1 < FileNode->OpenCount;
FspFsvolDeviceUnlockContextTable(FileNode->FsvolDeviceObject);
if (EarlyExit)
{
FSP_FSVOL_DEVICE_EXTENSION *FsvolDeviceExtension =
FspFsvolDeviceExtension(FileNode->FsvolDeviceObject);
UINT64 AllocationSize = FileInfo->AllocationSize > FileInfo->FileSize ?
FileInfo->AllocationSize : FileInfo->FileSize;
UINT64 AllocationUnit;
AllocationUnit = FsvolDeviceExtension->VolumeParams.SectorSize *
FsvolDeviceExtension->VolumeParams.SectorsPerAllocationUnit;
AllocationSize = (AllocationSize + AllocationUnit - 1) / AllocationUnit * AllocationUnit;
if (TruncateOnClose)
{
if ((UINT64)FileNode->Header.AllocationSize.QuadPart != AllocationSize ||
(UINT64)FileNode->Header.FileSize.QuadPart != FileInfo->FileSize)
FileNode->TruncateOnClose = TRUE;
}
return FALSE;
}
FspFileNodeSetFileInfo(FileNode, CcFileObject, FileInfo, TruncateOnClose);
return TRUE;
}
BOOLEAN FspFileNodeTrySetFileInfo(FSP_FILE_NODE *FileNode, PFILE_OBJECT CcFileObject,
const FSP_FSCTL_FILE_INFO *FileInfo, ULONG InfoChangeNumber)
{