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sys: FspUnicodePathIsValid: check and return stream type

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This commit is contained in:
Bill Zissimopoulos
2016-10-05 13:44:32 -07:00
parent 4ccbd1bdf6
commit c6967c737a
5 changed files with 61 additions and 14 deletions
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17
src/sys/create.c
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@ -179,6 +179,7 @@ static NTSTATUS FspFsvolCreateNoLock(
FSP_FILE_NODE *FileNode, *RelatedFileNode;
FSP_FILE_DESC *FileDesc;
UNICODE_STRING MainFileName = { 0 }, StreamPart = { 0 };
ULONG StreamType = FspUnicodePathStreamTypeNone;
FSP_FSCTL_TRANSACT_REQ *Request;
/* cannot open files by fileid */
@ -276,7 +277,8 @@ static NTSTATUS FspFsvolCreateNoLock(
/* check filename validity */
if (!FspUnicodePathIsValid(&FileNode->FileName,
FsvolDeviceExtension->VolumeParams.NamedStreams ? &StreamPart : 0))
FsvolDeviceExtension->VolumeParams.NamedStreams ? &StreamPart : 0,
&StreamType))
{
FspFileNodeDereference(FileNode);
return STATUS_OBJECT_NAME_INVALID;
@ -291,7 +293,8 @@ static NTSTATUS FspFsvolCreateNoLock(
(PUINT8)FileNode->FileName.Buffer + FileNode->FileName.Length);
FileNode->FileName.Length = (USHORT)
((PUINT8)StreamPart.Buffer - (PUINT8)FileNode->FileName.Buffer + StreamPart.Length);
((PUINT8)StreamPart.Buffer - (PUINT8)FileNode->FileName.Buffer + StreamPart.Length -
(0 == StreamPart.Length) * sizeof(WCHAR));
}
/* check and remove any volume prefix */
@ -330,6 +333,16 @@ static NTSTATUS FspFsvolCreateNoLock(
FileNode->FileName.Length -= sizeof(WCHAR);
}
/* if a $DATA stream type, this cannot be a directory */
if (FspUnicodePathStreamTypeData == StreamType)
{
if (FlagOn(CreateOptions, FILE_DIRECTORY_FILE))
{
FspFileNodeDereference(FileNode);
return STATUS_NOT_A_DIRECTORY;
}
}
/* not all operations allowed on the root directory */
if (sizeof(WCHAR) == FileNode->FileName.Length &&
(FILE_CREATE == CreateDisposition ||