Catching ^C and ^Z

[Neil Weisenfeld]

In article <Sep.4.20.08.17.1990.1216 at utopia.rutgers.edu>, deen at utopia (Cinnamon Raisin) writes:
>
>Hi boys and girls,
>
>	I am trying to write a quick programme to lock a terminal(TTY)
>	when I leave it.  Essentially I want to capture all the 
>	interrupts that can be sent from the keyboard, such as
>	SIG_INT,SIG_QUIT and so on.  The only reasonable thing I've 
>	found that lets me do this is ioctl().
[stuff deleted]

I remember doing this a while ago.  What UNIX are you running?  Under BSD,
you should be able to do something like:
	signal(SIGINT,SIG_IGN);
	signal(SIGQUIT,SIG_IGN);
to IGNore the signals.  Using SIG_DFL should return them to their default
handlers.  You can also substitute a pointer to a handler of your own.  Take
a look at signal(3) and sigvec(2).

Neil

_____________________________________________________________________________
( ) _     ( )   Neil Weisenfeld                            | 3900 Chestnut St.
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_____________________________________________________________________________
( ) _     ( )   Neil Weisenfeld                            | 3900 Chestnut St.
( )(_)_   ( )   Computer Science and Engineering           | Apt. 233
( )  (_)_ ( )   School of Engineering and Applied Science  | Philadelphia, PA