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Don't exit from watchdogd on receiving a signal if we cannot stop the watchdog.

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That'll require -KILL. This avoids resetting your system on one of the
watchdogs that you cannot disable.
This commit is contained in:
Nick Hibma 2006-12-15 22:47:36 +00:00
parent 9c65d944a0
commit 0f71a1cba6
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=165263
1 changed files with 18 additions and 11 deletions
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29
usr.sbin/watchdogd/watchdogd.c
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@ -55,7 +55,7 @@ static void sighandler(int);
static void watchdog_loop(void);
static int watchdog_init(void);
static int watchdog_onoff(int onoff);
static int watchdog_patpat(void);
static int watchdog_patpat(u_int timeout);
static void usage(void);
int debugging = 0;
@ -121,7 +121,6 @@ main(int argc, char *argv[])
watchdog_loop();
/* exiting */
watchdog_onoff(0);
pidfile_remove(pfh);
return (EX_OK);
} else {
@ -129,7 +128,7 @@ main(int argc, char *argv[])
timeout |= WD_PASSIVE;
else
timeout |= WD_ACTIVE;
if (watchdog_patpat() < 0)
if (watchdog_patpat(timeout) < 0)
err(EX_OSERR, "patting the dog");
return (EX_OK);
}
@ -169,7 +168,7 @@ watchdog_loop(void)
struct stat sb;
int failed;
while (end_program == 0) {
while (end_program != 2) {
failed = 0;
if (test_cmd != NULL)
@ -178,8 +177,17 @@ watchdog_loop(void)
failed = stat("/etc", &sb);
if (failed == 0)
watchdog_patpat();
watchdog_patpat(timeout|WD_ACTIVE);
sleep(nap);
if (end_program != 0) {
if (watchdog_onoff(0) == 0) {
end_program = 2;
} else {
warnx("Could not stop the watchdog, not exitting");
end_program = 0;
}
}
}
}
@ -188,10 +196,10 @@ watchdog_loop(void)
* to keep the watchdog from firing.
*/
int
watchdog_patpat(void)
watchdog_patpat(u_int t)
{
return ioctl(fd, WDIOCPATPAT, &timeout);
return ioctl(fd, WDIOCPATPAT, &t);
}
/*
@ -203,10 +211,9 @@ watchdog_onoff(int onoff)
{
if (onoff)
timeout |= WD_ACTIVE;
return watchdog_patpat((timeout|WD_ACTIVE));
else
timeout &= ~WD_ACTIVE;
return watchdog_patpat();
return watchdog_patpat(0);
}
/*
@ -216,7 +223,7 @@ static void
usage()
{
if (is_daemon)
fprintf(stderr, "usage: watchdogd [-d] [-e cmd] [-I file]\n");
fprintf(stderr, "usage: watchdogd [-d] [-e cmd] [-I file] [-s sleep] [-t timeout]\n");
else
fprintf(stderr, "usage: watchdog [-d] [-t timeout]\n");
exit(EX_USAGE);