ntdll: NtReadFile should fail for overlapped IO on files if offset is negative.

eb10471b · Dmitry Timoshkov · Alexandre Julliard · b314a253 · eb10471b
Commit eb10471b authored Sep 13, 2013 by Dmitry Timoshkov Committed by Alexandre Julliard Sep 13, 2013
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file.c dlls/ntdll/file.c +1 -1

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--- a/dlls/ntdll/file.c
+++ b/dlls/ntdll/file.c
@@ -606,7 +606,7 @@ NTSTATUS WINAPI NtReadFile(HANDLE hFile, HANDLE hEvent,
    if (type == FD_TYPE_FILE)
    {
-        if (!(options & (FILE_SYNCHRONOUS_IO_ALERT | FILE_SYNCHRONOUS_IO_NONALERT)) && !offset)
+        if (!(options & (FILE_SYNCHRONOUS_IO_ALERT | FILE_SYNCHRONOUS_IO_NONALERT)) && (!offset || offset->QuadPart < 0))
        {
            status = STATUS_INVALID_PARAMETER;
            goto done;