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[UDFS]

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Fix broken implementation of UDFGetFullNameInformation().
Always return full name length so that caller can allocate a big-enough buffer for later call.

CORE-4375

svn path=/trunk/; revision=74914
This commit is contained in:
Pierre Schweitzer 2017-06-04 16:59:25 +00:00
parent 09d56b8cff
commit a538181140
1 changed files with 4 additions and 2 deletions
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6
reactos/drivers/filesystems/udfs/fileinfo.cpp
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@ -831,20 +831,22 @@ UDFGetFullNameInformation(
IN OUT PLONG PtrReturnedLength
)
{
ULONG BytesToCopy;
NTSTATUS RC = STATUS_SUCCESS;
AdPrint(("UDFGetFullNameInformation\n"));
PtrBuffer->FileNameLength = FileObject->FileName.Length;
BytesToCopy = FileObject->FileName.Length;
if (PtrBuffer->FileNameLength + sizeof( ULONG ) > (ULONG)(*PtrReturnedLength)) {
PtrBuffer->FileNameLength = *PtrReturnedLength - sizeof( ULONG );
BytesToCopy = *PtrReturnedLength - sizeof( ULONG );
RC = STATUS_BUFFER_OVERFLOW;
}
RtlCopyMemory( PtrBuffer->FileName, FileObject->FileName.Buffer, PtrBuffer->FileNameLength );
RtlCopyMemory( PtrBuffer->FileName, FileObject->FileName.Buffer, BytesToCopy );
// Reduce the available bytes by the amount stored into this buffer.
*PtrReturnedLength -= sizeof( ULONG ) + PtrBuffer->FileNameLength;