static int
check_respawn_thread(thread_t * thread)
{
pid_t pid;
/* Fetch thread args */
pid = THREAD_CHILD_PID(thread);
/* Restart respawning thread */
if (thread->type == THREAD_CHILD_TIMEOUT) {
thread_add_child(master, check_respawn_thread, NULL,
pid, RESPAWN_TIMER);
return 0;
}
/* We catch a SIGCHLD, handle it */
if (!__test_bit(DONT_RESPAWN_BIT, &debug)) {
log_message(LOG_ALERT, "Healthcheck child process(%d) died: Respawning", pid);
start_check_child();
} else {
log_message(LOG_ALERT, "Healthcheck child process(%d) died: Exiting", pid);
raise(SIGTERM);
}
return 0;
}
/* VRRP Child respawning thread */
int
vrrp_respawn_thread(thread_t * thread)
{
pid_t pid;
/* Fetch thread args */
pid = THREAD_CHILD_PID(thread);
/* Restart respawning thread */
if (thread->type == THREAD_CHILD_TIMEOUT) {
thread_add_child(master, vrrp_respawn_thread, NULL,
pid, RESPAWN_TIMER);
return 0;
}
/* We catch a SIGCHLD, handle it */
if (!(debug & 64)) {
log_message(LOG_ALERT, "VRRP child process(%d) died: Respawning", pid);
start_vrrp_child();
} else {
log_message(LOG_ALERT, "VRRP child process(%d) died: Exiting", pid);
raise(SIGTERM);
}
return 0;
}
/* VRRP Child respawning thread */
int
vrrp_respawn_thread(thread * thread_obj)
{
pid_t pid;
/* Fetch thread args */
pid = THREAD_CHILD_PID(thread_obj);
/* Restart respawning thread */
if (thread_obj->type == THREAD_CHILD_TIMEOUT) {
thread_add_child(master, vrrp_respawn_thread, NULL,
pid, RESPAWN_TIMER);
return 0;
}
/* We catch a SIGCHLD, handle it */
log_message(LOG_INFO, "VRRP child process(%d) died: Respawning", pid);
start_vrrp_child();
return 0;
}
int
misc_check_child_timeout_thread(thread * thread_obj)
{
pid_t pid;
if (thread_obj->type != THREAD_CHILD_TIMEOUT)
return 0;
/* OK, it still hasn't exited. Now really kill it off. */
pid = THREAD_CHILD_PID(thread_obj);
if (kill(pid, SIGKILL) < 0) {
/* Its possible it finished while we're handing this */
if (errno != ESRCH)
DBG("kill error: %s", strerror(errno));
return 0;
}
log_message(LOG_WARNING, "Process [%d] didn't respond to SIGTERM", pid);
waitpid(pid, NULL, 0);
return 0;
}
int
misc_check_child_thread(thread * thread_obj)
{
int wait_status;
checker *checker_obj;
misc_checker *misc_chk;
checker_obj = THREAD_ARG(thread_obj);
misc_chk = CHECKER_ARG(checker_obj);
if (thread_obj->type == THREAD_CHILD_TIMEOUT) {
pid_t pid;
pid = THREAD_CHILD_PID(thread_obj);
/* The child hasn't responded. Kill it off. */
if (svr_checker_up(checker_obj->id, checker_obj->rs)) {
log_message(LOG_INFO, "Misc check to [%s] for [%s] timed out",
inet_ntop2(CHECKER_RIP(checker_obj)),
misc_chk->path);
smtp_alert(checker_obj->rs, NULL, NULL,
"DOWN",
"=> MISC CHECK script timeout on service <=");
update_svr_checker_state(DOWN, checker_obj->id
, checker_obj->vs
, checker_obj->rs);
}
kill(pid, SIGTERM);
thread_add_child(thread_obj->master, misc_check_child_timeout_thread,
checker_obj, pid, 2);
return 0;
}
wait_status = THREAD_CHILD_STATUS(thread_obj);
if (WIFEXITED(wait_status)) {
int status;
status = WEXITSTATUS(wait_status);
if (status == 0 ||
(misc_chk->dynamic == 1 && status >= 2 && status <= 255)) {
/*
* The actual weight set when using misc_dynamic is two less than
* the exit status returned. Effective range is 0..253.
* Catch legacy case of status being 0 but misc_dynamic being set.
*/
if (misc_chk->dynamic == 1 && status != 0)
update_svr_wgt(status - 2, checker_obj->vs, checker_obj->rs);
/* everything is good */
if (!svr_checker_up(checker_obj->id, checker_obj->rs)) {
log_message(LOG_INFO, "Misc check to [%s] for [%s] success.",
inet_ntop2(CHECKER_RIP(checker_obj)),
misc_chk->path);
smtp_alert(checker_obj->rs, NULL, NULL,
"UP",
"=> MISC CHECK succeed on service <=");
update_svr_checker_state(UP, checker_obj->id
, checker_obj->vs
, checker_obj->rs);
}
} else {
if (svr_checker_up(checker_obj->id, checker_obj->rs)) {
log_message(LOG_INFO, "Misc check to [%s] for [%s] failed.",
inet_ntop2(CHECKER_RIP(checker_obj)),
misc_chk->path);
smtp_alert(checker_obj->rs, NULL, NULL,
"DOWN",
"=> MISC CHECK failed on service <=");
update_svr_checker_state(DOWN, checker_obj->id
, checker_obj->vs
, checker_obj->rs);
}
}
}
return 0;
}