pid_t
maildrop_setup(uint32_t session_id, int pair[2], struct passwd *pw)
{
struct imsgev iev_session;
struct event ev_sigint, ev_sigterm;
struct m_backend *mb;
pid_t pid;
extern int mtype;
if ((pid = fork()) != 0)
return (pid);
if (setgroups(1, &pw->pw_gid) ||
setresgid(pw->pw_gid, pw->pw_gid, pw->pw_gid) ||
setresuid(pw->pw_uid, pw->pw_uid, pw->pw_uid))
fatal("cannot drop privileges");
close(pair[0]);
setproctitle("maildrop");
if ((mb = m_backend_lookup(mtype)) == NULL)
fatalx("maildrop: invalid backend");
event_init();
signal_set(&ev_sigint, SIGINT, sig_handler, NULL);
signal_set(&ev_sigterm, SIGTERM, sig_handler, NULL);
signal_add(&ev_sigint, NULL);
signal_add(&ev_sigterm, NULL);
imsgev_init(&iev_session, pair[1], mb, session_imsgev, needfd);
if (event_dispatch() < 0)
fatal("event_dispatch");
logit(LOG_INFO, "%zu: maildrop process exiting", session_id);
_exit(0);
}
static int child( euca_opts *args, java_home_t *data, uid_t uid, gid_t gid ) {
int ret = 0;
jboolean r=0;
__write_pid( GETARG(args,pidfile) );
setpgrp( );
__die(java_init( args, data ) != 1, "Failed to initialize Eucalyptus.");
__die((r=(*env)->CallBooleanMethod(env,bootstrap.instance,bootstrap.init))==0,"Failed to init Eucalyptus.");
__abort(4, set_keys_ownership( GETARG( args, home ), uid, gid ) != 0,"Setting ownership of keyfile failed." );
__abort(4, linuxset_user_group( GETARG( args, user ), uid, gid ) != 0,"Setting the user failed." );
__abort(4, (set_caps(0)!=0), "set_caps (0) failed");
__die((r=(*env)->CallBooleanMethod(env,bootstrap.instance,bootstrap.load))==0,"Failed to load Eucalyptus.");
__die((r=(*env)->CallBooleanMethod(env,bootstrap.instance,bootstrap.start))==0,"Failed to start Eucalyptus.");
handle._hup = signal_set( SIGHUP, handler );
handle._term = signal_set( SIGTERM, handler );
handle._int = signal_set( SIGINT, handler );
child_pid = getpid( );
__debug( "Waiting for a signal to be delivered" );
while( !stopping ) sleep( 60 );
__debug( "Shutdown or reload requested: exiting" );
__die((r=(*env)->CallBooleanMethod(env,bootstrap.instance,bootstrap.stop))==0,"Failed to stop Eucalyptus.");
if( doreload == 1 ) ret = EUCA_RET_RELOAD;
else ret = 0;
__die((r=(*env)->CallBooleanMethod(env,bootstrap.instance,bootstrap.destroy))==0,"Failed to destroy Eucalyptus.");
__die((JVM_destroy( ret ) != 1), "Failed trying to destroy JVM... bailing out seems like the right thing to do" );
return ret;
}
static void signal_setup(void)
{
static struct event ev_sighup;
static struct event ev_sigterm;
static struct event ev_sigint;
sigset_t set;
int err;
/* block SIGPIPE */
sigemptyset(&set);
sigaddset(&set, SIGPIPE);
err = sigprocmask(SIG_BLOCK, &set, NULL);
if (err < 0)
fatal_perror("sigprocmask");
/* catch signals */
signal_set(&ev_sighup, SIGHUP, handle_sighup, NULL);
err = signal_add(&ev_sighup, NULL);
if (err < 0)
fatal_perror("signal_add");
signal_set(&ev_sigterm, SIGTERM, handle_sigterm, NULL);
err = signal_add(&ev_sigterm, NULL);
if (err < 0)
fatal_perror("signal_add");
signal_set(&ev_sigint, SIGINT, handle_sigint, NULL);
err = signal_add(&ev_sigint, NULL);
if (err < 0)
fatal_perror("signal_add");
}
LUALIB_API int
luaopen_sys (lua_State *L)
{
luaL_register(L, LUA_SYSLIBNAME, sys_lib);
createmeta(L);
luaopen_sys_mem(L);
luaopen_sys_thread(L);
#ifdef _WIN32
#ifdef _WIN32_WCE
is_WinNT = 1;
#else
/* Is Win32 NT platform? */
{
OSVERSIONINFO osvi;
osvi.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
is_WinNT = (GetVersionEx(&osvi)
&& osvi.dwPlatformId == VER_PLATFORM_WIN32_NT);
}
#endif
luaopen_sys_win32(L);
#else
/* Ignore sigpipe or it will crash us */
signal_set(SIGPIPE, SIG_IGN);
/* To interrupt blocking syscalls */
signal_set(SYS_SIGINTR, NULL);
#endif
return 1;
}
pid_t
ca(void)
{
pid_t pid;
struct passwd *pw;
struct event ev_sigint;
struct event ev_sigterm;
switch (pid = fork()) {
case -1:
fatal("ca: cannot fork");
case 0:
post_fork(PROC_CA);
break;
default:
return (pid);
}
purge_config(PURGE_LISTENERS|PURGE_TABLES|PURGE_RULES);
if ((pw = getpwnam(SMTPD_USER)) == NULL)
fatalx("unknown user " SMTPD_USER);
if (chroot(PATH_CHROOT) == -1)
fatal("ca: chroot");
if (chdir("/") == -1)
fatal("ca: chdir(\"/\")");
config_process(PROC_CA);
if (setgroups(1, &pw->pw_gid) ||
setresgid(pw->pw_gid, pw->pw_gid, pw->pw_gid) ||
setresuid(pw->pw_uid, pw->pw_uid, pw->pw_uid))
fatal("ca: cannot drop privileges");
imsg_callback = ca_imsg;
event_init();
signal_set(&ev_sigint, SIGINT, ca_sig_handler, NULL);
signal_set(&ev_sigterm, SIGTERM, ca_sig_handler, NULL);
signal_add(&ev_sigint, NULL);
signal_add(&ev_sigterm, NULL);
signal(SIGPIPE, SIG_IGN);
signal(SIGHUP, SIG_IGN);
config_peer(PROC_CONTROL);
config_peer(PROC_PARENT);
config_peer(PROC_PONY);
config_done();
/* Ignore them until we get our config */
mproc_disable(p_pony);
if (event_dispatch() < 0)
fatal("event_dispatch");
ca_shutdown();
return (0);
}
/* CHECK Child signal handling */
static void
check_signal_init(void)
{
signal_handler_init();
signal_set(SIGHUP, sighup_check, NULL);
signal_set(SIGINT, sigend_check, NULL);
signal_set(SIGTERM, sigend_check, NULL);
signal_ignore(SIGPIPE);
}
/* Initialize signal handler */
void
signal_init(void)
{
signal_handler_init();
signal_set(SIGHUP, sighup, NULL);
signal_set(SIGINT, sigend, NULL);
signal_set(SIGTERM, sigend, NULL);
signal_ignore(SIGPIPE);
}
pid_t
ypldap_dns(int pipe_ntp[2], struct passwd *pw)
{
pid_t pid;
struct event ev_sigint;
struct event ev_sigterm;
struct event ev_sighup;
struct env env;
switch (pid = fork()) {
case -1:
fatal("cannot fork");
break;
case 0:
break;
default:
return (pid);
}
setproctitle("dns engine");
close(pipe_ntp[0]);
if (setgroups(1, &pw->pw_gid) ||
setresgid(pw->pw_gid, pw->pw_gid, pw->pw_gid) ||
setresuid(pw->pw_uid, pw->pw_uid, pw->pw_uid))
fatal("can't drop privileges");
endservent();
if (pledge("stdio dns", NULL) == -1)
fatal("pledge");
event_init();
signal_set(&ev_sigint, SIGINT, dns_sig_handler, NULL);
signal_set(&ev_sigterm, SIGTERM, dns_sig_handler, NULL);
signal_set(&ev_sighup, SIGHUP, dns_sig_handler, NULL);
signal_add(&ev_sigint, NULL);
signal_add(&ev_sigterm, NULL);
signal_add(&ev_sighup, NULL);
if ((env.sc_iev = calloc(1, sizeof(*env.sc_iev))) == NULL)
fatal(NULL);
env.sc_iev->events = EV_READ;
env.sc_iev->data = &env;
imsg_init(&env.sc_iev->ibuf, pipe_ntp[1]);
env.sc_iev->handler = dns_dispatch_imsg;
event_set(&env.sc_iev->ev, env.sc_iev->ibuf.fd, env.sc_iev->events,
env.sc_iev->handler, &env);
event_add(&env.sc_iev->ev, NULL);
event_dispatch();
dns_shutdown();
return (0);
}
/* Reload thread */
int
reload_vrrp_thread(thread * thread_obj)
{
/* set the reloading flag */
SET_RELOAD;
SYS_VRRP_LOG_INFO("VRRP configure have been reload.");
/* Close sockpool */
free_vrrp_sockpool(vrrp_data);
/* Signal handling */
signal_reset();
signal_set(SIGHUP, sighup_vrrp, NULL);
signal_set(SIGINT, sigend_vrrp, NULL);
signal_set(SIGTERM, sigend_vrrp, NULL);
signal_ignore(SIGPIPE);
/* Destroy master thread */
thread_destroy_master(master);
master = thread_make_master();
free_global_data(data);
/* add by zhouben */
backup_if_queue();
kernel_netlink_close();
free_vrrp_buffer();
gratuitous_arp_close();
ndisc_close();
vrrp_trackip_close();
/* Save previous conf data */
old_vrrp_data = vrrp_data;
vrrp_data = NULL;
#ifdef _WITH_LVS_
/* Clean ipvs related */
//ipvs_stop();
#endif
/* Reload the conf */
mem_allocated = 0;
vrrp_signal_init();
signal_set(SIGCHLD, thread_child_handler, master);
start_vrrp();
/* free backup data */
free_old_interface_queue_only();
free_vrrp_data(old_vrrp_data);
UNSET_RELOAD;
/*end of reload, store the state to file*/
reloading = 0;
vrrp_state_store();
return 0;
}
/* VRRP Child signal handling */
void
vrrp_signal_init(void)
{
signal_handler_init();
signal_set(SIGHUP, sighup_vrrp, NULL);
signal_set(SIGINT, sigend_vrrp, NULL);
signal_set(SIGTERM, sigend_vrrp, NULL);
signal_set(SIGUSR1, sigusr1_vrrp, NULL);
signal_set(SIGUSR2, sigusr2_vrrp, NULL);
signal_ignore(SIGPIPE);
}
/* Initialize signal handler */
void
signal_init(void)
{
signal_handler_init();
signal_set(SIGHUP, propogate_signal, NULL);
signal_set(SIGUSR1, propogate_signal, NULL);
signal_set(SIGUSR2, propogate_signal, NULL);
signal_set(SIGINT, sigend, NULL);
signal_set(SIGTERM, sigend, NULL);
signal_ignore(SIGPIPE);
}
__dead void
client_main(void)
{
struct event ev_sigcont, ev_sigterm, ev_sigwinch;
struct sigaction sigact;
logfile("client");
/* Note: event_init() has already been called. */
/* Set up signals. */
memset(&sigact, 0, sizeof sigact);
sigemptyset(&sigact.sa_mask);
sigact.sa_flags = SA_RESTART;
sigact.sa_handler = SIG_IGN;
if (sigaction(SIGINT, &sigact, NULL) != 0)
fatal("sigaction failed");
if (sigaction(SIGPIPE, &sigact, NULL) != 0)
fatal("sigaction failed");
if (sigaction(SIGUSR1, &sigact, NULL) != 0)
fatal("sigaction failed");
if (sigaction(SIGUSR2, &sigact, NULL) != 0)
fatal("sigaction failed");
if (sigaction(SIGTSTP, &sigact, NULL) != 0)
fatal("sigaction failed");
signal_set(&ev_sigcont, SIGCONT, client_signal, NULL);
signal_add(&ev_sigcont, NULL);
signal_set(&ev_sigterm, SIGTERM, client_signal, NULL);
signal_add(&ev_sigterm, NULL);
signal_set(&ev_sigwinch, SIGWINCH, client_signal, NULL);
signal_add(&ev_sigwinch, NULL);
/*
* imsg_read in the first client poll loop (before the terminal has
* been initialised) may have read messages into the buffer after the
* MSG_READY switched to here. Process anything outstanding now to
* avoid hanging waiting for messages that have already arrived.
*/
if (client_dispatch() != 0)
goto out;
/* Set the event and dispatch. */
client_update_event();
event_dispatch();
out:
/* Print the exit message, if any, and exit. */
if (client_exitmsg != NULL && !login_shell)
printf("[%s]\n", client_exitmsg);
exit(client_exitval);
}
EVQ_API void
signal_init (void)
{
if (g_SignalInit) return;
g_SignalInit = 1;
/* Initialize critical section */
pthread_mutex_init(&g_Signal.cs, NULL);
/* Ignore sigpipe or it will crash us */
signal_set(SIGPIPE, SIG_IGN);
/* To interrupt blocking syscalls */
signal_set(SYS_SIGINTR, signal_handler);
}
/* Initialize signal handlers. */
void
signal_init(void) {
signal_set(SIGINT, sigint);
signal_set(SIGTSTP, sigtstp);
signal_set(SIGALRM, sigalarm);
signal_set(SIGPIPE, SIG_IGN);
signal_set(SIGQUIT, SIG_IGN);
signal_set(SIGTTIN, SIG_IGN);
signal_set(SIGTTOU, SIG_IGN);
signal_set(SIGTERM, sigterm);
signal_set(SIGHUP, SIG_IGN);
signal_set(SIGWINCH, sigwinch);
}
static int
signal_del (struct event_queue *evq, struct event *ev)
{
const int signo = (ev->flags & EVENT_PID) ? EVQ_SIGCHLD
: (int) ev->fd;
struct event **sig_evp = signal_gethead(signo);
int res = 0;
pthread_mutex_lock(&g_Signal.cs);
if (*sig_evp == ev) {
if (!(*sig_evp = ev->next_object)) {
#ifndef USE_KQUEUE
(void) evq;
#else
res |= signal_kqueue(evq, signo, EV_DELETE);
#endif
res |= signal_set(signo, SIG_DFL);
}
} else {
struct event *sig_ev = *sig_evp;
while (sig_ev->next_object != ev)
sig_ev = sig_ev->next_object;
sig_ev->next_object = ev->next_object;
}
pthread_mutex_unlock(&g_Signal.cs);
return res;
}
static int
signal_add (struct event_queue *evq, struct event *ev)
{
const int signo = (ev->flags & EVENT_PID) ? EVQ_SIGCHLD : (int) ev->fd;
struct event **sig_evp = signal_gethead(signo);
if (!sig_evp) return -1;
pthread_mutex_lock(&g_Signal.cs);
if (*sig_evp)
ev->next_object = *sig_evp;
else {
#ifdef USE_KQUEUE
if (signal_kqueue(evq, signo, EV_ADD))
goto err;
#endif
if (signal_set(signo, signal_handler))
goto err;
ev->next_object = NULL;
}
*sig_evp = ev;
pthread_mutex_unlock(&g_Signal.cs);
evq->nevents++;
return 0;
err:
pthread_mutex_unlock(&g_Signal.cs);
return -1;
}
void
rspamd_worker_set_signal_handler (int signo, struct rspamd_worker *worker,
struct event_base *base,
void (*handler)(struct rspamd_worker_signal_handler *sigh, void *),
void *handler_data)
{
struct rspamd_worker_signal_handler *sigh;
struct rspamd_worker_signal_cb *cb;
sigh = g_hash_table_lookup (worker->signal_events, GINT_TO_POINTER (signo));
if (sigh == NULL) {
sigh = g_malloc0 (sizeof (*sigh));
sigh->signo = signo;
sigh->worker = worker;
sigh->base = base;
sigh->enabled = TRUE;
signal_set (&sigh->ev, signo, rspamd_worker_signal_handler, sigh);
event_base_set (base, &sigh->ev);
signal_add (&sigh->ev, NULL);
g_hash_table_insert (worker->signal_events,
GINT_TO_POINTER (signo),
sigh);
}
cb = g_malloc0 (sizeof (*cb));
cb->handler = handler;
cb->handler_data = handler_data;
DL_APPEND (sigh->cb, cb);
}
/* SIGINT handler. This function takes care of ^C input. */
static void
sigint(int signo) {
/* Debug */
if (0) {
printf("signo %d\n", signo);
}
/* Reinstall signal. */
signal_set(SIGINT, sigint);
/* Wait child process. */
if (process_list) {
process_wait_for();
} else {
printf("\n");
}
/* Make it sure cclient is reset. */
cclient_stop(shell->cclient);
/* Long jump flag check. */
if (! jmpflag) {
return;
}
jmpflag = 0;
/* Back to main command loop. */
siglongjmp(jmpbuf, 1);
}
void AsyncSignalHandler::registerSignalHandler(int signum) {
pair<SignalEventMap::iterator, bool> ret =
signalEvents_.insert(make_pair(signum, event()));
if (!ret.second) {
// This signal has already been registered
throw std::runtime_error(folly::to<string>(
"handler already registered for signal ",
signum));
}
struct event* ev = &(ret.first->second);
try {
signal_set(ev, signum, libeventCallback, this);
if (event_base_set(eventBase_->getLibeventBase(), ev) != 0 ) {
throw std::runtime_error(folly::to<string>(
"error initializing event handler for signal ",
signum));
}
if (event_add(ev, nullptr) != 0) {
throw std::runtime_error(folly::to<string>(
"error adding event handler for signal ",
signum));
}
} catch (...) {
signalEvents_.erase(ret.first);
throw;
}
}
void
signal_init (struct thread_master *m, int sigc,
struct quagga_signal_t signals[])
{
int i = 0;
struct quagga_signal_t *sig;
/* First establish some default handlers that can be overridden by
the application. */
trap_default_signals();
while (i < sigc)
{
sig = &signals[i];
if ( signal_set (sig->signal) < 0 ) {
zlog_notice("signal_init exit(-1)\n");
EXIT(-1);
}
i++;
}
sigmaster.sigc = sigc;
sigmaster.signals = signals;
#ifdef SIGEVENT_SCHEDULE_THREAD
sigmaster.t =
thread_add_timer (m, quagga_signal_timer, &sigmaster,
QUAGGA_SIGNAL_TIMER_INTERVAL);
#endif /* SIGEVENT_SCHEDULE_THREAD */
}
/* SIGTSTP handler. This function takes care of ^Z input. */
static void
sigtstp(int signo) {
/* Debug */
if (0) {
printf("signo %d\n", signo);
}
/* Reinstall signal. */
signal_set(SIGTSTP, sigtstp);
/* Do nothing when sub-process is running. */
if (process_list) {
return;
}
/* New line. */
printf("\n");
/* Make it sure cclient is reset. */
cclient_stop(shell->cclient);
/* Long jump flag check. */
if (! jmpflag) {
return;
}
jmpflag = 0;
/* Back to main command loop. */
siglongjmp(jmpbuf, 1);
}
void
proc_set_signals(struct tmuxproc *tp, void (*signalcb)(int))
{
struct sigaction sa;
tp->signalcb = signalcb;
memset(&sa, 0, sizeof sa);
sigemptyset(&sa.sa_mask);
sa.sa_flags = SA_RESTART;
sa.sa_handler = SIG_IGN;
sigaction(SIGINT, &sa, NULL);
sigaction(SIGPIPE, &sa, NULL);
sigaction(SIGTSTP, &sa, NULL);
signal_set(&tp->ev_sighup, SIGHUP, proc_signal_cb, tp);
signal_add(&tp->ev_sighup, NULL);
signal_set(&tp->ev_sigchld, SIGCHLD, proc_signal_cb, tp);
signal_add(&tp->ev_sigchld, NULL);
signal_set(&tp->ev_sigcont, SIGCONT, proc_signal_cb, tp);
signal_add(&tp->ev_sigcont, NULL);
signal_set(&tp->ev_sigterm, SIGTERM, proc_signal_cb, tp);
signal_add(&tp->ev_sigterm, NULL);
signal_set(&tp->ev_sigusr1, SIGUSR1, proc_signal_cb, tp);
signal_add(&tp->ev_sigusr1, NULL);
signal_set(&tp->ev_sigusr2, SIGUSR2, proc_signal_cb, tp);
signal_add(&tp->ev_sigusr2, NULL);
signal_set(&tp->ev_sigwinch, SIGWINCH, proc_signal_cb, tp);
signal_add(&tp->ev_sigwinch, NULL);
}
/**
* The ``main'' function of the adns helper process (server).
*
* Simply reads requests (queries) from fd_in, performs a DNS lookup for it
* and writes the result to fd_out. All operations should be blocking. Exits
* in case of non-recoverable error during read or write.
*/
static void
adns_helper(int fd_in, int fd_out)
{
g_set_prgname(adns_process_title);
gm_setproctitle(g_get_prgname());
#ifdef SIGQUIT
signal_set(SIGQUIT, SIG_IGN); /* Avoid core dumps on SIGQUIT */
#endif
is_helper = TRUE;
for (;;) {
struct adns_request req;
struct adns_response ans;
size_t size;
void *buf;
if (!adns_do_read(fd_in, &req.common, sizeof req.common))
break;
if (ADNS_COMMON_MAGIC != req.common.magic)
break;
if (req.common.reverse) {
size = sizeof req.query.reverse;
buf = &req.query.reverse;
} else {
size = sizeof req.query.by_addr;
buf = &req.query.by_addr;
}
if (!adns_do_read(fd_in, buf, size))
break;
adns_gethostbyname(&req, &ans);
if (!adns_do_write(fd_out, &ans.common, sizeof ans.common))
break;
if (ans.common.reverse) {
size = sizeof ans.reply.reverse;
buf = &ans.reply.reverse;
} else {
size = sizeof ans.reply.by_addr;
buf = &ans.reply.by_addr;
}
if (!adns_do_write(fd_out, buf, size))
break;
}
fd_close(&fd_in);
fd_close(&fd_out);
_exit(EXIT_SUCCESS);
}
int dect_event_ops_init(struct dect_ops *ops)
{
ev_base = event_init();
if (ev_base == NULL)
return -1;
ops->event_ops = &dect_event_ops;
signal_set(&sig_event, SIGINT, sig_callback, NULL);
signal_add(&sig_event, NULL);
return 0;
}
void
set_signals(void (*handler)(int, short, void *), void *arg)
{
struct sigaction sigact;
memset(&sigact, 0, sizeof sigact);
sigemptyset(&sigact.sa_mask);
sigact.sa_flags = SA_RESTART;
sigact.sa_handler = SIG_IGN;
if (sigaction(SIGINT, &sigact, NULL) != 0)
fatal("sigaction failed");
if (sigaction(SIGPIPE, &sigact, NULL) != 0)
fatal("sigaction failed");
if (sigaction(SIGUSR2, &sigact, NULL) != 0)
fatal("sigaction failed");
if (sigaction(SIGTSTP, &sigact, NULL) != 0)
fatal("sigaction failed");
signal_set(&ev_sighup, SIGHUP, handler, arg);
signal_add(&ev_sighup, NULL);
signal_set(&ev_sigchld, SIGCHLD, handler, arg);
signal_add(&ev_sigchld, NULL);
signal_set(&ev_sigcont, SIGCONT, handler, arg);
signal_add(&ev_sigcont, NULL);
signal_set(&ev_sigterm, SIGTERM, handler, arg);
signal_add(&ev_sigterm, NULL);
signal_set(&ev_sigusr1, SIGUSR1, handler, arg);
signal_add(&ev_sigusr1, NULL);
signal_set(&ev_sigwinch, SIGWINCH, handler, arg);
signal_add(&ev_sigwinch, NULL);
}
EVQ_API int
evq_ignore_signal (struct event_queue *evq, const int signo, const int ignore)
{
#ifndef USE_KQUEUE
(void) evq;
#else
if (signal_kqueue(evq, signo, ignore ? EV_DELETE : EV_ADD))
return -1;
#endif
if (ignore)
return signal_set(signo, SIG_IGN);
else {
struct event **sig_evp = signal_gethead(signo);
int res;
pthread_mutex_lock(&g_Signal.cs);
res = signal_set(signo,
(sig_evp && *sig_evp ? signal_handler : SIG_DFL));
pthread_mutex_unlock(&g_Signal.cs);
return res;
}
}
struct ub_event*
ub_signal_new(struct ub_event_base* base, int fd,
void (*cb)(int, short, void*), void* arg)
{
struct event *ev = (struct event*)calloc(1, sizeof(struct event));
if (!ev)
return NULL;
signal_set(ev, fd, cb, arg);
if (event_base_set(AS_EVENT_BASE(base), ev) != 0) {
free(ev);
return NULL;
}
return AS_UB_EVENT(ev);
}
static void
signal_handlers_clear(void *state)
{
/* Ensure no more pending signals */
signal_set(SIGHUP, state, NULL);
signal_set(SIGINT, state, NULL);
signal_set(SIGTERM, state, NULL);
signal_set(SIGCHLD, state, NULL);
signal_set(SIGUSR1, state, NULL);
signal_set(SIGUSR2, state, NULL);
}
void signal_test()
{
// 初始化
base=event_init();
struct event evsignal;
int arg = SIGINT;
// 设置信号事件
signal_set(&evsignal, SIGINT,handler,&arg);
// 添加信号事件
event_add(&evsignal, NULL);
//设置为base事件
event_base_set(base, &evsignal);
// 事件调度循环
event_dispatch();
event_base_free(base);
}
/* Reload thread */
int
reload_vrrp_thread(thread_t * thread)
{
/* set the reloading flag */
SET_RELOAD;
/* Signal handling */
signal_handler_reset();
/* Destroy master thread */
vrrp_dispatcher_release(vrrp_data);
kernel_netlink_close();
thread_destroy_master(master);
master = thread_make_master();
free_global_data(global_data);
free_interface_queue();
free_vrrp_buffer();
gratuitous_arp_close();
ndisc_close();
#ifdef _WITH_LVS_
if (vrrp_ipvs_needed()) {
/* Clean ipvs related */
ipvs_stop();
}
#endif
/* Save previous conf data */
old_vrrp_data = vrrp_data;
vrrp_data = NULL;
/* Reload the conf */
#ifdef _DEBUG_
mem_allocated = 0;
#endif
vrrp_signal_init();
signal_set(SIGCHLD, thread_child_handler, master);
start_vrrp();
/* free backup data */
free_vrrp_data(old_vrrp_data);
UNSET_RELOAD;
return 0;
}