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sys: FSP_FILE_NODE: correctly handle FileInfo cache in the presence of streams

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This commit is contained in:
Bill Zissimopoulos
2016-10-06 12:13:16 -07:00
parent e4cabc50c5
commit eb2000a194
2 changed files with 55 additions and 30 deletions
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17
src/sys/driver.h
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@ -417,6 +417,12 @@ BOOLEAN FspExpirationTimeValid(UINT64 ExpirationTime)
return 1 >= ExpirationTime + 1 ? (0 != ExpirationTime) : (KeQueryInterruptTime() < ExpirationTime);
}
static inline
BOOLEAN FspExpirationTimeValidEx(UINT64 ExpirationTime, UINT64 CurrentTime)
{
/* if ExpirationTime is 0 or -1 then ExpirationTime else CurrentTime < ExpirationTime */
return 1 >= ExpirationTime + 1 ? (0 != ExpirationTime) : (CurrentTime < ExpirationTime);
}
static inline
BOOLEAN FspExpirationTimeValid2(UINT64 ExpirationTime, UINT64 CurrentTime)
{
return CurrentTime < ExpirationTime;
@ -919,14 +925,14 @@ typedef struct FSP_FILE_NODE
UNICODE_STRING FileName;
PWSTR ExternalFileName;
/* locked under Header.Resource */
UINT64 InfoExpirationTime;
UINT64 FileInfoExpirationTime, BasicInfoExpirationTime;
UINT32 FileAttributes;
UINT32 ReparseTag;
UINT64 CreationTime;
UINT64 LastAccessTime;
UINT64 LastWriteTime;
UINT64 ChangeTime;
ULONG InfoChangeNumber;
ULONG FileInfoChangeNumber;
UINT64 Security;
ULONG SecurityChangeNumber;
ULONG DirInfoChangeNumber;
@ -1013,7 +1019,11 @@ BOOLEAN FspFileNodeTrySetFileInfo(FSP_FILE_NODE *FileNode, PFILE_OBJECT CcFileOb
static inline
ULONG FspFileNodeFileInfoChangeNumber(FSP_FILE_NODE *FileNode)
{
return FileNode->InfoChangeNumber;
if (0 != FileNode->MainFileNode)
return (FileNode->MainFileNode->FileInfoChangeNumber & 0xfffff) |
((FileNode->FileInfoChangeNumber & 0xfff) << 20);
else
return FileNode->FileInfoChangeNumber & 0xfffff;
}
BOOLEAN FspFileNodeReferenceSecurity(FSP_FILE_NODE *FileNode, PCVOID *PBuffer, PULONG PSize);
VOID FspFileNodeSetSecurity(FSP_FILE_NODE *FileNode, PCVOID Buffer, ULONG Size);
@ -1024,7 +1034,6 @@ ULONG FspFileNodeSecurityChangeNumber(FSP_FILE_NODE *FileNode)
{
if (0 != FileNode->MainFileNode)
FileNode = FileNode->MainFileNode;
return FileNode->SecurityChangeNumber;
}
BOOLEAN FspFileNodeReferenceDirInfo(FSP_FILE_NODE *FileNode, PCVOID *PBuffer, PULONG PSize);