/*      $NetBSD: h_sigcli.c,v 1.3 2011/02/07 20:05:09 pooka Exp $       */

#include <sys/types.h>
#include <sys/sysctl.h>

#include <err.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>

#include <rump/rump_syscalls.h>
#include <rump/rumpclient.h>

static const int hostnamemib[] = { CTL_KERN, KERN_HOSTNAME };
static char hostnamebuf[128];

static volatile sig_atomic_t sigexecs;

static void
sighand(int sig)
{
        char buf[128];
        size_t blen = sizeof(buf);

        if (rump_sys___sysctl(hostnamemib, __arraycount(hostnamemib),
            buf, &blen, NULL, 0) == -1)
                err(1, "sighand sysctl");
        if (strcmp(buf, hostnamebuf) != 0)
                errx(1, "sighandler hostname");
        sigexecs++;
}

int
main(void)
{
        char buf[128];
        time_t tstart;
        struct itimerval itv;
        size_t hnbsize;
        int i;
        size_t blen;

        if (rumpclient_init() == -1)
                err(1, "rumpclient init");

        hnbsize = sizeof(hostnamebuf);
        if (rump_sys___sysctl(hostnamemib, __arraycount(hostnamemib),
            hostnamebuf, &hnbsize, NULL, 0) == -1)
                err(1, "sysctl");

        if (signal(SIGALRM, sighand) == SIG_ERR)
                err(1, "signal");

        itv.it_interval.tv_sec = itv.it_value.tv_sec = 0;
        itv.it_interval.tv_usec = itv.it_value.tv_usec = 10000; /* 10ms */

        if (setitimer(ITIMER_REAL, &itv, NULL) == -1)
                err(1, "itimer");

        tstart = time(NULL);
        for (i = 0;; i++) {
                blen = sizeof(buf);
                if (rump_sys___sysctl(hostnamemib, __arraycount(hostnamemib),
                    buf, &blen, NULL, 0) == -1)
                        err(1, "sysctl");
                if (strcmp(buf, hostnamebuf) != 0)
                        errx(1, "main hostname");

                /*
                 * check every 100 cycles to avoid doing
                 * nothing but gettimeofday()
                 */
                if (i == 100) {
                        if (time(NULL) - tstart > 5)
                                break;
                        i = 0;
                }
        }

        if (!sigexecs) {
                printf("no signal handlers run.  test busted?\n");
        }
}