[comp.unix.aux] Sigvec bug?

paul@athertn.Atherton.COM (Paul Sander) (01/31/91)

I've been working on a program that uses a signal handler, and I find that
sigvec(2) seems to always return -1, with errno set to EINVAL.  I've been
trying to set a signal handler for SIGPIPE, which is a valid signal number
according to the man pages.  I'm also passing the addresses of the
appropriate structures.

Has anyone else run into this problem, and is there a workaround other than
using signal(3)?  Is this to be fixed in v2.0.1?
-- 
Paul Sander        (408) 734-9822  | "Passwords are like underwear," she said,
paul@Atherton.COM                  | "Both should be changed often."
{decwrl,pyramid,sun}!athertn!paul  | -- Bennett Falk in "Mom Meets Unix"

ksand@Apple.COM (Kent Sandvik) (02/09/91)

In article <34162@athertn.Atherton.COM> paul@Atherton.COM (Paul Sander) writes:
>I've been working on a program that uses a signal handler, and I find that
>sigvec(2) seems to always return -1, with errno set to EINVAL.  I've been
>trying to set a signal handler for SIGPIPE, which is a valid signal number
>according to the man pages.  I'm also passing the addresses of the
>appropriate structures.

Here's a code example I'm using for some other signal testing just now,
using BSD signal handlers with A/UX. Maybe it helps you in your case.

#include <compat.h>
#include <stdio.h>
#include <signal.h>
#include <sys/time.h>


void myCatcher(sig, code, scp)
int sig;
int code;
int *scp;
{
        fprintf(stderr,"Signal %d received, code %d\n", sig, code);
        return;
}

void main()
{
        int i, j, k;
        struct sigvec vec;
        struct itimerval tim;

        setcompat(COMPAT_BSDSIGNALS);

        fprintf(stderr,"Start\n");

        vec.sv_handler = &myCatcher;
        vec.sv_mask = 0;
        vec.sv_flags = 0;

        sigvec(SIGILL,&vec,NULL);
        sigvec(SIGFPE,&vec,NULL);
        sigvec(SIGALRM,&vec,NULL);

        gettimeofday(tim.it_value, NULL);
        tim.it_interval.tv_sec = 0;
        tim.it_interval.tv_usec = 0;
        tim.it_value.tv_sec + = 10;


        setitimer(ITIMER_REAL,&tim,NULL);

        for(i = 1; i++; 1 < 0x4000) {
                for(j = 1; j++; j < 0x4000)
                        k = k-k;
        }
}

Regards,
Kent Sandvik (assuming that there's 100 bugs in this quick hack...)

-- 
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