[unix-history] / usr / src / cmd / ucbmail / Signal.c

#

#include <signal.h>

/*
 * The following is for systems with botched signal() system entries
 * which don't return the proper value for the previous signal.
 */

int	oldsigs[17];

int
(*Signal())(sig, spot)
	int spot;
{
	int ret;

	/* printf("Signal(%d, %.1o)\n", sig, spot); */
	if (sig < 1 || sig > 16)
		return(-1);
	ret = oldsigs[sig];
	oldsigs[sig] = (int) spot;
	signal(sig, spot);
	return(ret);
}

Siginit()
{
	register int i;

	for (i = 1; i < 17; i++) {
		oldsigs[i] = (int) signal(i, SIG_IGN);
		signal(i, (int (*)()) oldsigs[i]);
	}
}
Commit	Line	Data
c8eb690c BJ	1	#
	2
	3	#include <signal.h>
	4
	5	/*
	6	* The following is for systems with botched signal() system entries
	7	* which don't return the proper value for the previous signal.
	8	*/
	9
	10	int oldsigs[17];
	11
	12	int
	13	(*Signal())(sig, spot)
	14	int spot;
	15	{
	16	int ret;
	17
	18	/* printf("Signal(%d, %.1o)\n", sig, spot); */
	19	if (sig < 1 \|\| sig > 16)
	20	return(-1);
	21	ret = oldsigs[sig];
	22	oldsigs[sig] = (int) spot;
	23	signal(sig, spot);
	24	return(ret);
	25	}
	26
	27	Siginit()
	28	{
	29	register int i;
	30
	31	for (i = 1; i < 17; i++) {
	32	oldsigs[i] = (int) signal(i, SIG_IGN);
	33	signal(i, (int (*)()) oldsigs[i]);
	34	}
	35	}