linux_to_bsd_msg_flags
static int linux_to_bsd_msg_flags(int);
if ((flags = linux_to_bsd_msg_flags(SCARG(uap, flags))) == -1)
bflags = linux_to_bsd_msg_flags(SCARG(uap, flags));
bflags = linux_to_bsd_msg_flags(SCARG(uap, flags));
msg.msg_flags = linux_to_bsd_msg_flags(SCARG(uap, flags));