#include <event2/event.h>
+/* how many seconds we wait to shutdown from SIGTERM before we send SIGKILL */
+#define KILL_GRACETIME 5
+
/* forward declaration */
static pid_t run_process(const char *path, ...);
+static void kill_childs(int sig, ...);
/* static variables */
static AFPObj obj;
static sig_atomic_t got_chldsig;
-static pid_t afpd_pid, cnid_metad_pid;
-static uint afpd_restarts, cnid_metad_restarts;
+static pid_t afpd_pid = -1, cnid_metad_pid = -1, dbus_pid = -1;
+static uint afpd_restarts, cnid_metad_restarts, dbus_restarts;
static struct event_base *base;
+struct event *sigterm_ev, *sigquit_ev, *sigchld_ev, *timer_ev;
+static int in_shutdown;
+static const char *dbus_path;
+
+/******************************************************************
+ * libevent helper functions
+ ******************************************************************/
-/* event functions */
+/* libevent logging callback */
static void libevent_logmsg_cb(int severity, const char *msg)
{
switch (severity) {
}
}
+/******************************************************************
+ * libevent event callbacks
+ ******************************************************************/
+
+/* SIGTERM callback */
static void sigterm_cb(evutil_socket_t fd, short what, void *arg)
{
- LOG(log_note, logtype_afpd, "Exiting on SIGTERM");
- kill(afpd_pid, SIGTERM);
- kill(cnid_metad_pid, SIGTERM);
- server_unlock(_PATH_NETATALK_LOCK);
- event_base_loopbreak(base);
+ sigset_t sigs;
+ struct timeval tv;
+
+ LOG(log_info, logtype_afpd, "Exiting on SIGTERM");
+
+ if (in_shutdown)
+ return;
+ in_shutdown = 1;
+
+ /* block any signal but SIGCHLD */
+ sigfillset(&sigs);
+ sigdelset(&sigs, SIGCHLD);
+ sigprocmask(SIG_SETMASK, &sigs, NULL);
+
+ /* add 10 sec timeout timer, remove all events but SIGCHLD */
+ tv.tv_sec = KILL_GRACETIME;
+ tv.tv_usec = 0;
+ event_base_loopexit(base, &tv);
+ event_del(sigterm_ev);
+ event_del(sigquit_ev);
+ event_del(timer_ev);
+
+ system("tracker-control -t");
+ kill_childs(SIGTERM, &afpd_pid, &cnid_metad_pid, &dbus_pid, NULL);
}
+/* SIGQUIT callback */
static void sigquit_cb(evutil_socket_t fd, short what, void *arg)
{
LOG(log_note, logtype_afpd, "Exiting on SIGQUIT");
- kill(afpd_pid, SIGTERM);
- kill(cnid_metad_pid, SIGTERM);
- server_unlock(_PATH_NETATALK_LOCK);
- event_base_loopbreak(base);
+ system("tracker-control -t");
+ kill_childs(SIGQUIT, &afpd_pid, &cnid_metad_pid, &dbus_pid, NULL);
}
+/* SIGCHLD callback */
static void sigchld_cb(evutil_socket_t fd, short what, void *arg)
{
int status, i;
pid_t pid;
- LOG(log_note, logtype_afpd, "Got SIGCHLD event");
-
while ((pid = waitpid(-1, &status, WNOHANG)) > 0) {
if (WIFEXITED(status)) {
if (WEXITSTATUS(status))
- LOG(log_info, logtype_afpd, "child[%d]: exited %d", pid, WEXITSTATUS(status));
+ LOG(log_info, logtype_default, "child[%d]: exited %d", pid, WEXITSTATUS(status));
else
- LOG(log_info, logtype_afpd, "child[%d]: done", pid);
+ LOG(log_info, logtype_default, "child[%d]: done", pid);
} else {
if (WIFSIGNALED(status))
- LOG(log_info, logtype_afpd, "child[%d]: killed by signal %d", pid, WTERMSIG(status));
+ LOG(log_info, logtype_default, "child[%d]: killed by signal %d", pid, WTERMSIG(status));
else
- LOG(log_info, logtype_afpd, "child[%d]: died", pid);
+ LOG(log_info, logtype_default, "child[%d]: died", pid);
}
- if (pid == afpd_pid) {
- sleep(1);
- afpd_restarts++;
- LOG(log_note, logtype_afpd, "Restarting 'afpd' (restart: %u)", afpd_restarts);
- if ((afpd_pid = run_process(_PATH_AFPD, "-d", "-F", obj.options.configfile, NULL)) == -1) {
- LOG(log_error, logtype_afpd, "Error starting 'afpd'");
- }
- } else if (pid = cnid_metad_pid) {
- sleep(1);
- cnid_metad_restarts++;
- LOG(log_note, logtype_afpd, "Restarting 'cnid_metad' (restart: %u)", cnid_metad_restarts);
- if ((cnid_metad_pid = run_process(_PATH_CNID_METAD, "-d", "-F", obj.options.configfile, NULL)) == -1) {
- LOG(log_error, logtype_afpd, "Error starting 'cnid_metad'");
- }
- } else {
+ if (pid == afpd_pid)
+ afpd_pid = -1;
+ else if (pid == cnid_metad_pid)
+ cnid_metad_pid = -1;
+ else if (pid == dbus_pid)
+ dbus_pid = -1;
+ else
LOG(log_error, logtype_afpd, "Bad pid: %d", pid);
+ }
+
+ if (in_shutdown && afpd_pid == -1 && cnid_metad_pid == -1 && dbus_pid == -1)
+ event_base_loopbreak(base);
+}
+
+/* timer callback */
+static void timer_cb(evutil_socket_t fd, short what, void *arg)
+{
+ static int i = 0;
+
+ if (in_shutdown)
+ return;
+
+ if (afpd_pid == -1) {
+ afpd_restarts++;
+ LOG(log_note, logtype_afpd, "Restarting 'afpd' (restarts: %u)", afpd_restarts);
+ if ((afpd_pid = run_process(_PATH_AFPD, "-d", "-F", obj.options.configfile, NULL)) == -1) {
+ LOG(log_error, logtype_default, "Error starting 'afpd'");
+ }
+ }
+
+ if (cnid_metad_pid == -1) {
+ cnid_metad_restarts++;
+ LOG(log_note, logtype_afpd, "Restarting 'cnid_metad' (restarts: %u)", cnid_metad_restarts);
+ if ((cnid_metad_pid = run_process(_PATH_CNID_METAD, "-d", "-F", obj.options.configfile, NULL)) == -1) {
+ LOG(log_error, logtype_default, "Error starting 'cnid_metad'");
+ }
+ }
+
+ if (dbus_pid == -1) {
+ dbus_restarts++;
+ LOG(log_note, logtype_afpd, "Restarting 'dbus' (restarts: %u)", dbus_restarts);
+ if ((dbus_pid = run_process(dbus_path, "--config-file=" _PATH_CONFDIR "dbus.session.conf", NULL)) == -1) {
+ LOG(log_error, logtype_default, "Error starting '%s'", dbus_path);
}
}
}
-/* other functions */
+/******************************************************************
+ * helper functions
+ ******************************************************************/
+
+/* kill processes passed as varargs of type "pid_t *", terminate list with NULL */
+static void kill_childs(int sig, ...)
+{
+ va_list args;
+ pid_t *pid;
+
+ va_start(args, sig);
+
+ while ((pid = va_arg(args, pid_t *)) != NULL) {
+ if (*pid == -1)
+ continue;
+ kill(*pid, sig);
+ }
+ va_end(args);
+}
+/* this get called when error conditions are met that require us to exit gracefully */
static void netatalk_exit(int ret)
{
server_unlock(_PATH_NETATALK_LOCK);
exit(ret);
}
+/* this forks() and exec() "path" with varags as argc[] */
static pid_t run_process(const char *path, ...)
{
int ret, i = 0;
LOG(log_error, logtype_cnid, "Fatal error in exec: %s", strerror(errno));
exit(1);
}
+ return pid;
}
static void usage(void)
const char *configfile = NULL;
int c, ret, debug = 0;
sigset_t blocksigs;
+ struct timeval tv;
/* Log SIGBUS/SIGSEGV SBT */
fault_setup(NULL);
sigfillset(&blocksigs);
sigprocmask(SIG_SETMASK, &blocksigs, NULL);
- if (afp_config_parse(&obj) != 0)
+ if (afp_config_parse(&obj, "netatalk") != 0)
netatalk_exit(EXITERR_CONF);
- set_processname("netatalk");
- setuplog(obj.options.logconfig, obj.options.logfile);
event_set_log_callback(libevent_logmsg_cb);
event_set_fatal_callback(netatalk_exit);
netatalk_exit(EXITERR_CONF);
}
+ dbus_path = iniparser_getstring(obj.iniconfig, INISEC_GLOBAL, "dbus path", "/bin/dbus-daemon");
+ LOG(log_debug, logtype_default, "DBUS: '%s'", dbus_path);
+ if ((dbus_pid = run_process(dbus_path, "--config-file=" _PATH_CONFDIR "dbus-session.conf", NULL)) == -1) {
+ LOG(log_error, logtype_default, "Error starting '%s'", dbus_path);
+ netatalk_exit(EXITERR_CONF);
+ }
+
+ setenv("DBUS_SESSION_BUS_ADDRESS", "unix:path=/tmp/spotlight.ipc", 1);
+ system("tracker-control -s");
+
if ((base = event_base_new()) == NULL) {
LOG(log_error, logtype_afpd, "Error starting event loop");
netatalk_exit(EXITERR_CONF);
}
- struct event *sigterm_ev, *sigquit_ev, *sigchld_ev;
- sigterm_ev = event_new(base, SIGTERM, EV_SIGNAL|EV_PERSIST, sigterm_cb, NULL);
- sigquit_ev = event_new(base, SIGQUIT, EV_SIGNAL|EV_PERSIST, sigquit_cb, NULL);
- sigchld_ev = event_new(base, SIGCHLD, EV_SIGNAL|EV_PERSIST, sigchld_cb, NULL);
+ sigterm_ev = event_new(base, SIGTERM, EV_SIGNAL, sigterm_cb, NULL);
+ sigquit_ev = event_new(base, SIGQUIT, EV_SIGNAL | EV_PERSIST, sigquit_cb, NULL);
+ sigchld_ev = event_new(base, SIGCHLD, EV_SIGNAL | EV_PERSIST, sigchld_cb, NULL);
+ timer_ev = event_new(base, -1, EV_PERSIST, timer_cb, NULL);
+
+ tv.tv_sec = 1;
+ tv.tv_usec = 0;
event_add(sigterm_ev, NULL);
event_add(sigquit_ev, NULL);
event_add(sigchld_ev, NULL);
+ event_add(timer_ev, &tv);
sigfillset(&blocksigs);
sigdelset(&blocksigs, SIGTERM);
/* run the event loop */
ret = event_base_dispatch(base);
- return ret;
+ if (afpd_pid != -1 || cnid_metad_pid != -1) {
+ if (afpd_pid != -1)
+ LOG(log_error, logtype_afpd, "AFP service did not shutdown, killing it");
+ if (cnid_metad_pid != -1)
+ LOG(log_error, logtype_afpd, "CNID database service did not shutdown, killing it");
+ if (dbus_pid != -1)
+ LOG(log_error, logtype_afpd, "DBUS session daemon still running, killing it");
+ kill_childs(SIGKILL, &afpd_pid, &cnid_metad_pid, &dbus_pid, NULL);
+ }
+
+ LOG(log_note, logtype_afpd, "Netatalk AFP server exiting");
+
+ netatalk_exit(ret);
}