1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
|
/* $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");
}
}
|
