WSTAT_MTIME
if (result == B_OK && (mask & (WSTAT_ATIME | WSTAT_MTIME))) {
buffer.modtime = (mask & WSTAT_MTIME)
XDROutPacketAddInt32(&call, (mask & WSTAT_MTIME) ? st->st_mtime : -1);
XDROutPacketAddInt32(&call, (mask & WSTAT_MTIME) ? 0 : UINT32_MAX);