2 Copyright (c) 2012 Frank Lahm <franklahm@gmail.com>
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
16 #endif /* HAVE_CONFIG_H */
22 #include <sys/param.h>
25 #include <sys/socket.h>
29 #include <sys/resource.h>
31 #include <atalk/logger.h>
32 #include <atalk/adouble.h>
33 #include <atalk/compat.h>
34 #include <atalk/dsi.h>
35 #include <atalk/afp.h>
36 #include <atalk/paths.h>
37 #include <atalk/util.h>
38 #include <atalk/server_child.h>
39 #include <atalk/server_ipc.h>
40 #include <atalk/errchk.h>
41 #include <atalk/globals.h>
42 #include <atalk/netatalk_conf.h>
43 #include <atalk/bstrlib.h>
44 #include <atalk/bstradd.h>
46 #include <event2/event.h>
48 /* how many seconds we wait to shutdown from SIGTERM before we send SIGKILL */
49 #define KILL_GRACETIME 5
51 /* defines that control whether services should run by default */
52 #define NETATALK_SRV_NEEDED -1
53 #define NETATALK_SRV_OPTIONAL 0
54 #define NETATALK_SRV_ERROR NETATALK_SRV_NEEDED
56 /* forward declaration */
57 static pid_t run_process(const char *path, ...);
58 static void kill_childs(int sig, ...);
60 /* static variables */
62 static pid_t afpd_pid = NETATALK_SRV_NEEDED;
63 static pid_t cnid_metad_pid = NETATALK_SRV_NEEDED;
64 static pid_t dbus_pid = NETATALK_SRV_OPTIONAL;
65 static uint afpd_restarts, cnid_metad_restarts, dbus_restarts;
66 static struct event_base *base;
67 struct event *sigterm_ev, *sigquit_ev, *sigchld_ev, *timer_ev;
68 static int in_shutdown;
69 static const char *dbus_path;
71 /******************************************************************
73 ******************************************************************/
75 static bool service_running(pid_t pid)
77 if ((pid != NETATALK_SRV_NEEDED) && (pid != NETATALK_SRV_OPTIONAL))
82 /* Set Tracker Miners to index all our volumes */
83 static int set_sl_volumes(void)
86 const struct vol *volumes, *vol;
87 struct bstrList *vollist = bstrListCreate();
88 bstring sep = bfromcstr(", ");
89 bstring volnamelist = NULL, cmd = NULL;
91 EC_NULL_LOG( volumes = getvolumes() );
93 for (vol = volumes; vol; vol = vol->v_next) {
94 if (vol->v_flags & AFPVOL_SPOTLIGHT) {
95 bstring volnamequot = bformat("'%s'", vol->v_path);
96 bstrListPush(vollist, volnamequot);
100 volnamelist = bjoin(vollist, sep);
101 cmd = bformat("gsettings set org.freedesktop.Tracker.Miner.Files index-recursive-directories \"[%s]\"",
102 bdata(volnamelist) ? bdata(volnamelist) : "");
103 LOG(log_debug, logtype_sl, "set_sl_volumes: %s", bdata(cmd));
106 /* Disable default root user home indexing */
107 system("gsettings set org.freedesktop.Tracker.Miner.Files index-single-directories \"[]\"");
115 bstrListDestroy(vollist);
117 bdestroy(volnamelist);
121 /******************************************************************
122 * libevent helper functions
123 ******************************************************************/
125 /* libevent logging callback */
126 static void libevent_logmsg_cb(int severity, const char *msg)
129 case _EVENT_LOG_DEBUG:
130 LOG(log_debug, logtype_default, "libevent: %s", msg);
133 LOG(log_info, logtype_default, "libevent: %s", msg);
135 case _EVENT_LOG_WARN:
136 LOG(log_warning, logtype_default, "libevent: %s", msg);
139 LOG(log_error, logtype_default, "libevent: %s", msg);
142 LOG(log_error, logtype_default, "libevent: %s", msg);
143 break; /* never reached */
147 /******************************************************************
148 * libevent event callbacks
149 ******************************************************************/
151 /* SIGTERM callback */
152 static void sigterm_cb(evutil_socket_t fd, short what, void *arg)
157 LOG(log_info, logtype_afpd, "Exiting on SIGTERM");
163 /* block any signal but SIGCHLD */
165 sigdelset(&sigs, SIGCHLD);
166 sigprocmask(SIG_SETMASK, &sigs, NULL);
168 /* add 10 sec timeout timer, remove all events but SIGCHLD */
169 tv.tv_sec = KILL_GRACETIME;
171 event_base_loopexit(base, &tv);
172 event_del(sigterm_ev);
173 event_del(sigquit_ev);
177 system("tracker-control -t");
179 kill_childs(SIGTERM, &afpd_pid, &cnid_metad_pid, &dbus_pid, NULL);
182 /* SIGQUIT callback */
183 static void sigquit_cb(evutil_socket_t fd, short what, void *arg)
185 LOG(log_note, logtype_afpd, "Exiting on SIGQUIT");
187 system("tracker-control -t");
189 kill_childs(SIGQUIT, &afpd_pid, &cnid_metad_pid, &dbus_pid, NULL);
192 /* SIGHUP callback */
193 static void sighup_cb(evutil_socket_t fd, short what, void *arg)
195 LOG(log_note, logtype_afpd, "Received SIGHUP, sending all processes signal to reload config");
196 kill_childs(SIGHUP, &afpd_pid, &cnid_metad_pid, NULL);
199 /* SIGCHLD callback */
200 static void sigchld_cb(evutil_socket_t fd, short what, void *arg)
205 while ((pid = waitpid(-1, &status, WNOHANG)) > 0) {
206 if (WIFEXITED(status)) {
207 if (WEXITSTATUS(status))
208 LOG(log_info, logtype_default, "child[%d]: exited %d", pid, WEXITSTATUS(status));
210 LOG(log_info, logtype_default, "child[%d]: done", pid);
212 if (WIFSIGNALED(status))
213 LOG(log_info, logtype_default, "child[%d]: killed by signal %d", pid, WTERMSIG(status));
215 LOG(log_info, logtype_default, "child[%d]: died", pid);
219 afpd_pid = NETATALK_SRV_ERROR;
220 else if (pid == cnid_metad_pid)
221 cnid_metad_pid = NETATALK_SRV_ERROR;
222 else if (pid == dbus_pid)
223 dbus_pid = NETATALK_SRV_ERROR;
225 LOG(log_error, logtype_afpd, "Bad pid: %d", pid);
229 && !service_running(afpd_pid)
230 && !service_running(cnid_metad_pid)
231 && !service_running(dbus_pid)) {
232 event_base_loopbreak(base);
237 static void timer_cb(evutil_socket_t fd, short what, void *arg)
242 if (afpd_pid == NETATALK_SRV_NEEDED) {
244 LOG(log_note, logtype_afpd, "Restarting 'afpd' (restarts: %u)", afpd_restarts);
245 if ((afpd_pid = run_process(_PATH_AFPD, "-d", "-F", obj.options.configfile, NULL)) == -1) {
246 LOG(log_error, logtype_default, "Error starting 'afpd'");
250 if (cnid_metad_pid == NETATALK_SRV_NEEDED) {
251 cnid_metad_restarts++;
252 LOG(log_note, logtype_afpd, "Restarting 'cnid_metad' (restarts: %u)", cnid_metad_restarts);
253 if ((cnid_metad_pid = run_process(_PATH_CNID_METAD, "-d", "-F", obj.options.configfile, NULL)) == -1) {
254 LOG(log_error, logtype_default, "Error starting 'cnid_metad'");
259 if (dbus_pid == NETATALK_SRV_NEEDED) {
261 LOG(log_note, logtype_afpd, "Restarting 'dbus' (restarts: %u)", dbus_restarts);
262 if ((dbus_pid = run_process(dbus_path, "--config-file=" _PATH_CONFDIR "dbus-session.conf", NULL)) == -1) {
263 LOG(log_error, logtype_default, "Error starting '%s'", dbus_path);
269 /******************************************************************
271 ******************************************************************/
273 /* kill processes passed as varargs of type "pid_t *", terminate list with NULL */
274 static void kill_childs(int sig, ...)
281 while ((pid = va_arg(args, pid_t *)) != NULL) {
282 if (*pid == NETATALK_SRV_ERROR || *pid == NETATALK_SRV_OPTIONAL)
289 /* this get called when error conditions are met that require us to exit gracefully */
290 static void netatalk_exit(int ret)
292 server_unlock(PATH_NETATALK_LOCK);
296 /* this forks() and exec() "path" with varags as argc[] */
297 static pid_t run_process(const char *path, ...)
301 char *myargv[MYARVSIZE];
305 if ((pid = fork()) < 0) {
306 LOG(log_error, logtype_cnid, "error in fork: %s", strerror(errno));
311 myargv[i++] = (char *)path;
312 va_start(args, path);
313 while (i < MYARVSIZE) {
314 if ((myargv[i++] = va_arg(args, char *)) == NULL)
319 (void)execv(path, myargv);
321 /* Yikes! We're still here, so exec failed... */
322 LOG(log_error, logtype_cnid, "Fatal error in exec: %s", strerror(errno));
328 static void usage(void)
330 printf("usage: netatalk [-F configfile] \n");
333 int main(int argc, char **argv)
335 int c, ret, debug = 0;
339 /* Log SIGBUS/SIGSEGV SBT */
342 while ((c = getopt(argc, argv, ":dF:")) != -1) {
348 obj.cmdlineconfigfile = strdup(optarg);
356 if (check_lockfile("netatalk", PATH_NETATALK_LOCK) != 0)
359 if (!debug && daemonize(0, 0) != 0)
362 if (create_lockfile("netatalk", PATH_NETATALK_LOCK) != 0)
365 sigfillset(&blocksigs);
366 sigprocmask(SIG_SETMASK, &blocksigs, NULL);
368 if (afp_config_parse(&obj, "netatalk") != 0)
369 netatalk_exit(EXITERR_CONF);
371 load_volumes(&obj, lv_all);
373 event_set_log_callback(libevent_logmsg_cb);
374 event_set_fatal_callback(netatalk_exit);
376 LOG(log_note, logtype_default, "Netatalk AFP server starting");
378 if ((afpd_pid = run_process(_PATH_AFPD, "-d", "-F", obj.options.configfile, NULL)) == NETATALK_SRV_ERROR) {
379 LOG(log_error, logtype_afpd, "Error starting 'afpd'");
380 netatalk_exit(EXITERR_CONF);
383 if ((cnid_metad_pid = run_process(_PATH_CNID_METAD, "-d", "-F", obj.options.configfile, NULL)) == NETATALK_SRV_ERROR) {
384 LOG(log_error, logtype_afpd, "Error starting 'cnid_metad'");
385 netatalk_exit(EXITERR_CONF);
388 if ((base = event_base_new()) == NULL) {
389 LOG(log_error, logtype_afpd, "Error starting event loop");
390 netatalk_exit(EXITERR_CONF);
393 sigterm_ev = event_new(base, SIGTERM, EV_SIGNAL, sigterm_cb, NULL);
394 sigquit_ev = event_new(base, SIGQUIT, EV_SIGNAL | EV_PERSIST, sigquit_cb, NULL);
395 sigquit_ev = event_new(base, SIGHUP, EV_SIGNAL | EV_PERSIST, sighup_cb, NULL);
396 sigchld_ev = event_new(base, SIGCHLD, EV_SIGNAL | EV_PERSIST, sigchld_cb, NULL);
397 timer_ev = event_new(base, -1, EV_PERSIST, timer_cb, NULL);
402 event_add(sigterm_ev, NULL);
403 event_add(sigquit_ev, NULL);
404 event_add(sigchld_ev, NULL);
405 event_add(timer_ev, &tv);
407 sigfillset(&blocksigs);
408 sigdelset(&blocksigs, SIGTERM);
409 sigdelset(&blocksigs, SIGQUIT);
410 sigdelset(&blocksigs, SIGCHLD);
411 sigdelset(&blocksigs, SIGHUP);
412 sigprocmask(SIG_SETMASK, &blocksigs, NULL);
415 if (obj.options.flags & OPTION_SPOTLIGHT) {
416 setenv("DBUS_SESSION_BUS_ADDRESS", "unix:path=" _PATH_STATEDIR "spotlight.ipc", 1);
417 setenv("XDG_DATA_HOME", _PATH_STATEDIR, 0);
418 setenv("XDG_CACHE_HOME", _PATH_STATEDIR, 0);
419 setenv("TRACKER_USE_LOG_FILES", "1", 0);
421 if (atalk_iniparser_getboolean(obj.iniconfig, INISEC_GLOBAL, "start dbus", 1)) {
422 dbus_path = atalk_iniparser_getstring(obj.iniconfig, INISEC_GLOBAL, "dbus daemon", DBUS_DAEMON_PATH);
423 LOG(log_note, logtype_default, "Starting dbus: %s", dbus_path);
424 if ((dbus_pid = run_process(dbus_path, "--config-file=" _PATH_CONFDIR "dbus-session.conf", NULL)) == NETATALK_SRV_ERROR) {
425 LOG(log_error, logtype_default, "Error starting '%s'", dbus_path);
426 netatalk_exit(EXITERR_CONF);
429 /* Allow dbus some time to start up */
435 if (atalk_iniparser_getboolean(obj.iniconfig, INISEC_GLOBAL, "start tracker", 1)) {
436 LOG(log_note, logtype_default, "Starting Tracker");
437 system(TRACKER_PREFIX "/bin/tracker-control -s");
443 /* run the event loop */
444 ret = event_base_dispatch(base);
446 if (service_running(afpd_pid) || service_running(cnid_metad_pid) || service_running(dbus_pid)) {
447 if (service_running(afpd_pid))
448 LOG(log_error, logtype_afpd, "AFP service did not shutdown, killing it");
449 if (service_running(cnid_metad_pid))
450 LOG(log_error, logtype_afpd, "CNID database service did not shutdown, killing it");
451 if (service_running(dbus_pid))
452 LOG(log_error, logtype_afpd, "DBUS session daemon still running, killing it");
453 kill_childs(SIGKILL, &afpd_pid, &cnid_metad_pid, &dbus_pid, NULL);
456 LOG(log_note, logtype_afpd, "Netatalk AFP server exiting");