status.i4.v = my_user_name(user_name.i1a.r)

	This routine returns the calling process' Linux user name. For
	personal users, this will be their Linux user name.  For
	public consoles, this will be "console".

	user_name	returned null terminated user name
			(USER_NAME_LEN + 1 characters)

	This function returns status values as follows:

	OK			success
	CLIB_GENERR		failed to determine the user name

	This function requires the following include files:

	cnsparam_h, clib_h, acnet_errors_h

	Related functions:

	my_current_user_name, retrieve_validated_user_name, my_user_id,
	my_executable_name_c, my_generic_ascii_name, my_gen_name, myname,
	my_ascii_name, mynode, myconsole, myinstance, myslot, mypage,
	clib_environment, my_acnet_user_name, my_control_system_name

	C/C++ usage:

	char	user_name[USER_NAME_LEN+1];
	int	status;

	status = my_user_name(user_name);