lbl/src/signals.cpp

/* (C) C.D.F. Miller, Heriot-Watt University, March 1984
 *
 *	Permission is hereby given to reproduce or modify this
 *	software freely, provided that this notice be retained,
 *	and that no use be made of the software for commercial
 *	purposes without the express written permission of the
 *	author.
 */

#include	<lbl.h>
#include	<signal.h>
#include        <unistd.h>
#include        "signals.h"

typedef void (*sig_t) (int);

extern char tempname[];

static void onsignal(int unused) __attribute__((noreturn));
static void
onsignal(int unused)
{
	(void)unused;
	unlink(tempname);
	_exit(2);
}

void
setsignals()
{
	if (signal(SIGINT, onsignal) == SIG_IGN)
		signal(SIGINT, SIG_IGN);
	if (signal(SIGQUIT, onsignal) == SIG_IGN)
		signal(SIGQUIT, SIG_IGN);
	if (signal(SIGHUP, onsignal) == SIG_IGN)
		signal(SIGHUP, SIG_IGN);
	if (signal(SIGTERM, onsignal) == SIG_IGN)
		signal(SIGTERM, SIG_IGN);
}