2 * Copyright (c) 1990,1993 Regents of The University of Michigan.
3 * All Rights Reserved. See COPYRIGHT.
8 #endif /* HAVE_CONFIG_H */
14 #include <sys/param.h>
17 #include <sys/socket.h>
21 #include <sys/resource.h>
23 #include <atalk/logger.h>
24 #include <atalk/adouble.h>
25 #include <atalk/compat.h>
26 #include <atalk/dsi.h>
27 #include <atalk/afp.h>
28 #include <atalk/paths.h>
29 #include <atalk/util.h>
30 #include <atalk/server_child.h>
31 #include <atalk/server_ipc.h>
32 #include <atalk/errchk.h>
33 #include <atalk/globals.h>
34 #include <atalk/netatalk_conf.h>
36 #include <event2/event.h>
38 /* how many seconds we wait to shutdown from SIGTERM before we send SIGKILL */
39 #define KILL_GRACETIME 5
41 /* forward declaration */
42 static pid_t run_process(const char *path, ...);
43 static void kill_childs(int sig, ...);
45 /* static variables */
47 static sig_atomic_t got_chldsig;
48 static pid_t afpd_pid = -1, cnid_metad_pid = -1, dbus_pid = -1;
49 static uint afpd_restarts, cnid_metad_restarts, dbus_restarts;
50 static struct event_base *base;
51 struct event *sigterm_ev, *sigquit_ev, *sigchld_ev, *timer_ev;
52 static int in_shutdown;
53 static const char *dbus_path;
55 /******************************************************************
56 * libevent helper functions
57 ******************************************************************/
59 /* libevent logging callback */
60 static void libevent_logmsg_cb(int severity, const char *msg)
63 case _EVENT_LOG_DEBUG:
64 LOG(log_debug, logtype_default, "libevent: %s", msg);
67 LOG(log_info, logtype_default, "libevent: %s", msg);
70 LOG(log_warning, logtype_default, "libevent: %s", msg);
73 LOG(log_error, logtype_default, "libevent: %s", msg);
76 LOG(log_error, logtype_default, "libevent: %s", msg);
77 break; /* never reached */
81 /******************************************************************
82 * libevent event callbacks
83 ******************************************************************/
85 /* SIGTERM callback */
86 static void sigterm_cb(evutil_socket_t fd, short what, void *arg)
91 LOG(log_info, logtype_afpd, "Exiting on SIGTERM");
97 /* block any signal but SIGCHLD */
99 sigdelset(&sigs, SIGCHLD);
100 sigprocmask(SIG_SETMASK, &sigs, NULL);
102 /* add 10 sec timeout timer, remove all events but SIGCHLD */
103 tv.tv_sec = KILL_GRACETIME;
105 event_base_loopexit(base, &tv);
106 event_del(sigterm_ev);
107 event_del(sigquit_ev);
110 system("tracker-control -t");
111 kill_childs(SIGTERM, &afpd_pid, &cnid_metad_pid, &dbus_pid, NULL);
114 /* SIGQUIT callback */
115 static void sigquit_cb(evutil_socket_t fd, short what, void *arg)
117 LOG(log_note, logtype_afpd, "Exiting on SIGQUIT");
118 system("tracker-control -t");
119 kill_childs(SIGQUIT, &afpd_pid, &cnid_metad_pid, &dbus_pid, NULL);
122 /* SIGCHLD callback */
123 static void sigchld_cb(evutil_socket_t fd, short what, void *arg)
128 while ((pid = waitpid(-1, &status, WNOHANG)) > 0) {
129 if (WIFEXITED(status)) {
130 if (WEXITSTATUS(status))
131 LOG(log_info, logtype_default, "child[%d]: exited %d", pid, WEXITSTATUS(status));
133 LOG(log_info, logtype_default, "child[%d]: done", pid);
135 if (WIFSIGNALED(status))
136 LOG(log_info, logtype_default, "child[%d]: killed by signal %d", pid, WTERMSIG(status));
138 LOG(log_info, logtype_default, "child[%d]: died", pid);
143 else if (pid == cnid_metad_pid)
145 else if (pid == dbus_pid)
148 LOG(log_error, logtype_afpd, "Bad pid: %d", pid);
151 if (in_shutdown && afpd_pid == -1 && cnid_metad_pid == -1 && dbus_pid == -1)
152 event_base_loopbreak(base);
156 static void timer_cb(evutil_socket_t fd, short what, void *arg)
163 if (afpd_pid == -1) {
165 LOG(log_note, logtype_afpd, "Restarting 'afpd' (restarts: %u)", afpd_restarts);
166 if ((afpd_pid = run_process(_PATH_AFPD, "-d", "-F", obj.options.configfile, NULL)) == -1) {
167 LOG(log_error, logtype_default, "Error starting 'afpd'");
171 if (cnid_metad_pid == -1) {
172 cnid_metad_restarts++;
173 LOG(log_note, logtype_afpd, "Restarting 'cnid_metad' (restarts: %u)", cnid_metad_restarts);
174 if ((cnid_metad_pid = run_process(_PATH_CNID_METAD, "-d", "-F", obj.options.configfile, NULL)) == -1) {
175 LOG(log_error, logtype_default, "Error starting 'cnid_metad'");
179 if (dbus_pid == -1) {
181 LOG(log_note, logtype_afpd, "Restarting 'dbus' (restarts: %u)", dbus_restarts);
182 if ((dbus_pid = run_process(dbus_path, "--config-file=" _PATH_CONFDIR "dbus.session.conf", NULL)) == -1) {
183 LOG(log_error, logtype_default, "Error starting '%s'", dbus_path);
188 /******************************************************************
190 ******************************************************************/
192 /* kill processes passed as varargs of type "pid_t *", terminate list with NULL */
193 static void kill_childs(int sig, ...)
200 while ((pid = va_arg(args, pid_t *)) != NULL) {
208 /* this get called when error conditions are met that require us to exit gracefully */
209 static void netatalk_exit(int ret)
211 server_unlock(_PATH_NETATALK_LOCK);
215 /* this forks() and exec() "path" with varags as argc[] */
216 static pid_t run_process(const char *path, ...)
223 if ((pid = fork()) < 0) {
224 LOG(log_error, logtype_cnid, "error in fork: %s", strerror(errno));
229 myargv[i++] = (char *)path;
230 va_start(args, path);
231 while ((myargv[i++] = va_arg(args, char *)) != NULL)
235 ret = execv(path, myargv);
237 /* Yikes! We're still here, so exec failed... */
238 LOG(log_error, logtype_cnid, "Fatal error in exec: %s", strerror(errno));
244 static void usage(void)
246 printf("usage: netatalk [-F configfile] \n");
249 int main(int argc, char **argv)
251 const char *configfile = NULL;
252 int c, ret, debug = 0;
256 /* Log SIGBUS/SIGSEGV SBT */
259 while ((c = getopt(argc, argv, ":dF:")) != -1) {
265 obj.cmdlineconfigfile = strdup(optarg);
273 if (check_lockfile("netatalk", _PATH_NETATALK_LOCK) != 0)
276 if (!debug && daemonize(0, 0) != 0)
279 if (create_lockfile("netatalk", _PATH_NETATALK_LOCK) != 0)
282 sigfillset(&blocksigs);
283 sigprocmask(SIG_SETMASK, &blocksigs, NULL);
285 if (afp_config_parse(&obj, "netatalk") != 0)
286 netatalk_exit(EXITERR_CONF);
288 event_set_log_callback(libevent_logmsg_cb);
289 event_set_fatal_callback(netatalk_exit);
291 LOG(log_note, logtype_default, "Netatalk AFP server starting");
293 if ((afpd_pid = run_process(_PATH_AFPD, "-d", "-F", obj.options.configfile, NULL)) == -1) {
294 LOG(log_error, logtype_afpd, "Error starting 'cnid_metad'");
295 netatalk_exit(EXITERR_CONF);
298 if ((cnid_metad_pid = run_process(_PATH_CNID_METAD, "-d", "-F", obj.options.configfile, NULL)) == -1) {
299 LOG(log_error, logtype_afpd, "Error starting 'cnid_metad'");
300 netatalk_exit(EXITERR_CONF);
303 if ((base = event_base_new()) == NULL) {
304 LOG(log_error, logtype_afpd, "Error starting event loop");
305 netatalk_exit(EXITERR_CONF);
308 sigterm_ev = event_new(base, SIGTERM, EV_SIGNAL, sigterm_cb, NULL);
309 sigquit_ev = event_new(base, SIGQUIT, EV_SIGNAL | EV_PERSIST, sigquit_cb, NULL);
310 sigchld_ev = event_new(base, SIGCHLD, EV_SIGNAL | EV_PERSIST, sigchld_cb, NULL);
311 timer_ev = event_new(base, -1, EV_PERSIST, timer_cb, NULL);
316 event_add(sigterm_ev, NULL);
317 event_add(sigquit_ev, NULL);
318 event_add(sigchld_ev, NULL);
319 event_add(timer_ev, &tv);
321 sigfillset(&blocksigs);
322 sigdelset(&blocksigs, SIGTERM);
323 sigdelset(&blocksigs, SIGQUIT);
324 sigdelset(&blocksigs, SIGCHLD);
325 sigprocmask(SIG_SETMASK, &blocksigs, NULL);
327 dbus_path = iniparser_getstring(obj.iniconfig, INISEC_GLOBAL, "dbus daemon path", "/bin/dbus-daemon");
328 LOG(log_debug, logtype_default, "DBUS: '%s'", dbus_path);
329 if ((dbus_pid = run_process(dbus_path, "--config-file=" _PATH_CONFDIR "dbus-session.conf", NULL)) == -1) {
330 LOG(log_error, logtype_default, "Error starting '%s'", dbus_path);
331 netatalk_exit(EXITERR_CONF);
336 setenv("DBUS_SESSION_BUS_ADDRESS", "unix:path=/tmp/spotlight.ipc", 1);
337 system(TRACKER_PREFIX "/bin/tracker-control -s");
339 /* run the event loop */
340 ret = event_base_dispatch(base);
342 if (afpd_pid != -1 || cnid_metad_pid != -1 || dbus_pid != -1) {
344 LOG(log_error, logtype_afpd, "AFP service did not shutdown, killing it");
345 if (cnid_metad_pid != -1)
346 LOG(log_error, logtype_afpd, "CNID database service did not shutdown, killing it");
348 LOG(log_error, logtype_afpd, "DBUS session daemon still running, killing it");
349 kill_childs(SIGKILL, &afpd_pid, &cnid_metad_pid, &dbus_pid, NULL);
352 LOG(log_note, logtype_afpd, "Netatalk AFP server exiting");