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sys: FspFileNodeCleanup:

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- Handle the scenario where there are cleaned up, but unclosed streams in the context table.
This commit is contained in:
Bill Zissimopoulos 2016-12-29 14:18:04 -08:00
parent e4b4e6a1f9
commit 2f8ac3765d
1 changed files with 97 additions and 59 deletions
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156
src/sys/file.c
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@ -166,6 +166,65 @@ VOID FspFileNodeOplockComplete(PVOID Context, PIRP Irp);
if (IrpValid) \
FspIrpSetFlags(Irp, FspIrpFlags(Irp) & (~Flags & 3))
#define GATHER_DESCENDANTS(FILENAME, REFERENCE, ...)\
FSP_FILE_NODE *DescendantFileNode;\
FSP_FILE_NODE *DescendantFileNodeArray[16], **DescendantFileNodes;\
ULONG DescendantFileNodeCount, DescendantFileNodeIndex;\
FSP_DEVICE_CONTEXT_BY_NAME_TABLE_RESTART_KEY RestartKey;\
DescendantFileNodes = DescendantFileNodeArray;\
DescendantFileNodeCount = 0;\
memset(&RestartKey, 0, sizeof RestartKey);\
for (;;) \
{ \
DescendantFileNode = FspFsvolDeviceEnumerateContextByName(FsvolDeviceObject,\
FILENAME, FALSE, &RestartKey);\
if (0 == DescendantFileNode) \
break; \
ASSERT(0 == ((UINT_PTR)DescendantFileNode & 7));\
__VA_ARGS__; \
if (REFERENCE) \
FspFileNodeReference((PVOID)((UINT_PTR)DescendantFileNode & ~7));\
if (ARRAYSIZE(DescendantFileNodeArray) > DescendantFileNodeCount)\
DescendantFileNodes[DescendantFileNodeCount] = DescendantFileNode;\
DescendantFileNodeCount++; \
} \
if (ARRAYSIZE(DescendantFileNodeArray) < DescendantFileNodeCount ||\
DEBUGTEST_EX(0 != DescendantFileNodeCount, 10, FALSE)) \
{ \
DescendantFileNodes = FspAllocMustSucceed(DescendantFileNodeCount * sizeof(FSP_FILE_NODE *));\
DescendantFileNodeIndex = 0; \
memset(&RestartKey, 0, sizeof RestartKey);\
for (;;) \
{ \
DescendantFileNode = FspFsvolDeviceEnumerateContextByName(FsvolDeviceObject,\
FILENAME, FALSE, &RestartKey);\
if (0 == DescendantFileNode)\
break; \
ASSERT(0 == ((UINT_PTR)DescendantFileNode & 7));\
__VA_ARGS__; \
DescendantFileNodes[DescendantFileNodeIndex] = DescendantFileNode;\
DescendantFileNodeIndex++; \
ASSERT(DescendantFileNodeCount >= DescendantFileNodeIndex);\
} \
ASSERT(DescendantFileNodeCount == DescendantFileNodeIndex);\
} \
((VOID)0)
#define SCATTER_DESCENDANTS(REFERENCE) \
if (REFERENCE) \
{ \
for ( \
DescendantFileNodeIndex = 0;\
DescendantFileNodeCount > DescendantFileNodeIndex;\
DescendantFileNodeIndex++) \
{ \
DescendantFileNode = DescendantFileNodes[DescendantFileNodeIndex];\
FspFileNodeDereference((PVOID)((UINT_PTR)DescendantFileNode & ~7));\
} \
} \
if (DescendantFileNodeArray != DescendantFileNodes)\
FspFree(DescendantFileNodes); \
((VOID)0)
NTSTATUS FspFileNodeCopyList(PDEVICE_OBJECT DeviceObject,
FSP_FILE_NODE ***PFileNodes, PULONG PFileNodeCount)
{
@ -728,6 +787,44 @@ VOID FspFileNodeCleanupComplete(FSP_FILE_NODE *FileNode, PFILE_OBJECT FileObject
FileNode->OpenCount = 0;
FileNode->Header.FileSize.QuadPart = 0;
/*
* We now have to deal with the scenario where there are cleaned up,
* but unclosed streams for this file still in the context table.
*/
if (FspFsvolDeviceExtension(FsvolDeviceObject)->VolumeParams.NamedStreams &&
0 == FileNode->MainFileNode)
{
BOOLEAN StreamDeletedFromContextTable;
USHORT FileNameLength = FileNode->FileName.Length;
GATHER_DESCENDANTS(&FileNode->FileName, FALSE,
if (DescendantFileNode->FileName.Length > FileNameLength &&
L'\\' == DescendantFileNode->FileName.Buffer[FileNameLength / sizeof(WCHAR)])
break;
ASSERT(FileNode != DescendantFileNode);
ASSERT(0 != DescendantFileNode->OpenCount);
ASSERT(0 == DescendantFileNode->HandleCount);
);
for (
DescendantFileNodeIndex = 0;
DescendantFileNodeCount > DescendantFileNodeIndex;
DescendantFileNodeIndex++)
{
DescendantFileNode = DescendantFileNodes[DescendantFileNodeIndex];
FspFsvolDeviceDeleteContextByName(FsvolDeviceObject, &DescendantFileNode->FileName,
&StreamDeletedFromContextTable);
if (StreamDeletedFromContextTable)
{
DescendantFileNode->OpenCount = 0;
FspFileNodeDereference(DescendantFileNode);
}
}
SCATTER_DESCENDANTS(FALSE);
}
}
if (DeletePending || FileNode->TruncateOnClose)
@ -872,65 +969,6 @@ NTSTATUS FspFileNodeFlushAndPurgeCache(FSP_FILE_NODE *FileNode,
return IoStatus.Status;
}
#define GATHER_DESCENDANTS(FILENAME, REFERENCE, ...)\
FSP_FILE_NODE *DescendantFileNode;\
FSP_FILE_NODE *DescendantFileNodeArray[16], **DescendantFileNodes;\
ULONG DescendantFileNodeCount, DescendantFileNodeIndex;\
FSP_DEVICE_CONTEXT_BY_NAME_TABLE_RESTART_KEY RestartKey;\
DescendantFileNodes = DescendantFileNodeArray;\
DescendantFileNodeCount = 0;\
memset(&RestartKey, 0, sizeof RestartKey);\
for (;;) \
{ \
DescendantFileNode = FspFsvolDeviceEnumerateContextByName(FsvolDeviceObject,\
FILENAME, FALSE, &RestartKey);\
if (0 == DescendantFileNode) \
break; \
ASSERT(0 == ((UINT_PTR)DescendantFileNode & 7));\
__VA_ARGS__; \
if (REFERENCE) \
FspFileNodeReference((PVOID)((UINT_PTR)DescendantFileNode & ~7));\
if (ARRAYSIZE(DescendantFileNodeArray) > DescendantFileNodeCount)\
DescendantFileNodes[DescendantFileNodeCount] = DescendantFileNode;\
DescendantFileNodeCount++; \
} \
if (ARRAYSIZE(DescendantFileNodeArray) < DescendantFileNodeCount ||\
DEBUGTEST_EX(0 != DescendantFileNodeCount, 10, FALSE)) \
{ \
DescendantFileNodes = FspAllocMustSucceed(DescendantFileNodeCount * sizeof(FSP_FILE_NODE *));\
DescendantFileNodeIndex = 0; \
memset(&RestartKey, 0, sizeof RestartKey);\
for (;;) \
{ \
DescendantFileNode = FspFsvolDeviceEnumerateContextByName(FsvolDeviceObject,\
FILENAME, FALSE, &RestartKey);\
if (0 == DescendantFileNode)\
break; \
ASSERT(0 == ((UINT_PTR)DescendantFileNode & 7));\
__VA_ARGS__; \
DescendantFileNodes[DescendantFileNodeIndex] = DescendantFileNode;\
DescendantFileNodeIndex++; \
ASSERT(DescendantFileNodeCount >= DescendantFileNodeIndex);\
} \
ASSERT(DescendantFileNodeCount == DescendantFileNodeIndex);\
} \
((VOID)0)
#define SCATTER_DESCENDANTS(REFERENCE) \
if (REFERENCE) \
{ \
for ( \
DescendantFileNodeIndex = 0;\
DescendantFileNodeCount > DescendantFileNodeIndex;\
DescendantFileNodeIndex++) \
{ \
DescendantFileNode = DescendantFileNodes[DescendantFileNodeIndex];\
FspFileNodeDereference((PVOID)((UINT_PTR)DescendantFileNode & ~7));\
} \
} \
if (DescendantFileNodeArray != DescendantFileNodes)\
FspFree(DescendantFileNodes); \
((VOID)0)
VOID FspFileNodeOverwriteStreams(FSP_FILE_NODE *FileNode)
{
/*