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sys,dll: Overwrite: named streams are now removed as per NTFS

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This commit is contained in:
Bill Zissimopoulos
2016-12-13 14:37:44 -08:00
parent c37444b0ae
commit ff08d63a82
6 changed files with 60 additions and 0 deletions
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41
src/sys/file.c
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@ -42,6 +42,7 @@ VOID FspFileNodeClose(FSP_FILE_NODE *FileNode,
BOOLEAN HandleCleanup); /* TRUE to decrement handle count */
NTSTATUS FspFileNodeFlushAndPurgeCache(FSP_FILE_NODE *FileNode,
UINT64 FlushOffset64, ULONG FlushLength, BOOLEAN FlushAndPurge);
VOID FspFileNodeOverwriteStreams(FSP_FILE_NODE *FileNode);
NTSTATUS FspFileNodeCheckBatchOplocksOnAllStreams(
PDEVICE_OBJECT FsvolDeviceObject,
PIRP OplockIrp,
@ -113,6 +114,7 @@ VOID FspFileNodeOplockComplete(PVOID Context, PIRP Irp);
#pragma alloc_text(PAGE, FspFileNodeCleanupComplete)
#pragma alloc_text(PAGE, FspFileNodeClose)
#pragma alloc_text(PAGE, FspFileNodeFlushAndPurgeCache)
#pragma alloc_text(PAGE, FspFileNodeOverwriteStreams)
#pragma alloc_text(PAGE, FspFileNodeCheckBatchOplocksOnAllStreams)
#pragma alloc_text(PAGE, FspFileNodeRenameCheck)
#pragma alloc_text(PAGE, FspFileNodeRename)
@ -911,6 +913,45 @@ NTSTATUS FspFileNodeFlushAndPurgeCache(FSP_FILE_NODE *FileNode,
FspFree(DescendantFileNodes); \
((VOID)0)
VOID FspFileNodeOverwriteStreams(FSP_FILE_NODE *FileNode)
{
/*
* Called during Create processing. The device rename resource has been acquired shared.
* No concurrent renames are allowed.
*/
PAGED_CODE();
ASSERT(0 == FileNode->MainFileNode);
PDEVICE_OBJECT FsvolDeviceObject = FileNode->FsvolDeviceObject;
USHORT FileNameLength = FileNode->FileName.Length;
FspFsvolDeviceLockContextTable(FsvolDeviceObject);
GATHER_DESCENDANTS(&FileNode->FileName, FALSE,
if (DescendantFileNode->FileName.Length > FileNameLength &&
L'\\' == DescendantFileNode->FileName.Buffer[FileNameLength / sizeof(WCHAR)])
break;
if (FileNode == DescendantFileNode || 0 >= DescendantFileNode->HandleCount)
continue;
);
/* mark any open named streams as DeletePending */
for (
DescendantFileNodeIndex = 0;
DescendantFileNodeCount > DescendantFileNodeIndex;
DescendantFileNodeIndex++)
{
DescendantFileNode = DescendantFileNodes[DescendantFileNodeIndex];
DescendantFileNode->DeletePending = TRUE;
}
FspFsvolDeviceUnlockContextTable(FsvolDeviceObject);
SCATTER_DESCENDANTS(FALSE);
}
NTSTATUS FspFileNodeCheckBatchOplocksOnAllStreams(
PDEVICE_OBJECT FsvolDeviceObject,
PIRP OplockIrp,