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>
45 #include "afp_zeroconf.h"
47 #include <event2/event.h>
49 /* how many seconds we wait to shutdown from SIGTERM before we send SIGKILL */
50 #define KILL_GRACETIME 5
52 /* defines that control whether services should run by default */
53 #define NETATALK_SRV_NEEDED -1
54 #define NETATALK_SRV_OPTIONAL 0
55 #define NETATALK_SRV_ERROR NETATALK_SRV_NEEDED
57 /* forward declaration */
58 static pid_t run_process(const char *path, ...);
59 static void kill_childs(int sig, ...);
61 /* static variables */
63 static pid_t afpd_pid = NETATALK_SRV_NEEDED;
64 static pid_t cnid_metad_pid = NETATALK_SRV_NEEDED;
65 static pid_t dbus_pid = NETATALK_SRV_OPTIONAL;
66 static uint afpd_restarts, cnid_metad_restarts, dbus_restarts;
67 static struct event_base *base;
68 struct event *sigterm_ev, *sigquit_ev, *sigchld_ev, *sighup_ev, *timer_ev;
69 static int in_shutdown;
70 static const char *dbus_path;
72 /******************************************************************
74 ******************************************************************/
76 static bool service_running(pid_t pid)
78 if ((pid != NETATALK_SRV_NEEDED) && (pid != NETATALK_SRV_OPTIONAL))
83 /* Set Tracker Miners to index all our volumes */
84 static int set_sl_volumes(void)
87 const struct vol *volumes, *vol;
88 struct bstrList *vollist = bstrListCreate();
89 bstring sep = bfromcstr(", ");
90 bstring volnamelist = NULL, cmd = NULL;
92 EC_NULL_LOG( volumes = getvolumes() );
94 for (vol = volumes; vol; vol = vol->v_next) {
95 if (vol->v_flags & AFPVOL_SPOTLIGHT) {
96 bstring volnamequot = bformat("'%s'", vol->v_path);
97 bstrListPush(vollist, volnamequot);
101 volnamelist = bjoin(vollist, sep);
102 cmd = bformat("gsettings set org.freedesktop.Tracker.Miner.Files index-recursive-directories \"[%s]\"",
103 bdata(volnamelist) ? bdata(volnamelist) : "");
104 LOG(log_debug, logtype_sl, "set_sl_volumes: %s", bdata(cmd));
107 /* Disable default root user home indexing */
108 system("gsettings set org.freedesktop.Tracker.Miner.Files index-single-directories \"[]\"");
116 bstrListDestroy(vollist);
118 bdestroy(volnamelist);
122 /******************************************************************
123 * libevent helper functions
124 ******************************************************************/
126 /* libevent logging callback */
127 static void libevent_logmsg_cb(int severity, const char *msg)
130 case _EVENT_LOG_DEBUG:
131 LOG(log_debug, logtype_default, "libevent: %s", msg);
134 LOG(log_info, logtype_default, "libevent: %s", msg);
136 case _EVENT_LOG_WARN:
137 LOG(log_warning, logtype_default, "libevent: %s", msg);
140 LOG(log_error, logtype_default, "libevent: %s", msg);
143 LOG(log_error, logtype_default, "libevent: %s", msg);
144 break; /* never reached */
148 /******************************************************************
149 * libevent event callbacks
150 ******************************************************************/
152 /* SIGTERM callback */
153 static void sigterm_cb(evutil_socket_t fd, short what, void *arg)
158 LOG(log_info, logtype_afpd, "Exiting on SIGTERM");
164 /* block any signal but SIGCHLD */
166 sigdelset(&sigs, SIGCHLD);
167 sigprocmask(SIG_SETMASK, &sigs, NULL);
169 /* add 10 sec timeout timer, remove all events but SIGCHLD */
170 tv.tv_sec = KILL_GRACETIME;
172 event_base_loopexit(base, &tv);
173 event_del(sigterm_ev);
174 event_del(sigquit_ev);
178 system("tracker-control -t");
180 kill_childs(SIGTERM, &afpd_pid, &cnid_metad_pid, &dbus_pid, NULL);
183 /* SIGQUIT callback */
184 static void sigquit_cb(evutil_socket_t fd, short what, void *arg)
186 LOG(log_note, logtype_afpd, "Exiting on SIGQUIT");
188 system("tracker-control -t");
190 kill_childs(SIGQUIT, &afpd_pid, &cnid_metad_pid, &dbus_pid, NULL);
193 /* SIGHUP callback */
194 static void sighup_cb(evutil_socket_t fd, short what, void *arg)
196 LOG(log_note, logtype_afpd, "Received SIGHUP, sending all processes signal to reload config");
198 if (!(obj.options.flags & OPTION_NOZEROCONF)) {
199 zeroconf_deregister();
200 load_volumes(&obj, lv_all | lv_force);
201 zeroconf_register(&obj);
202 LOG(log_note, logtype_default, "Re-registered with Zeroconf");
205 kill_childs(SIGHUP, &afpd_pid, &cnid_metad_pid, NULL);
208 /* SIGCHLD callback */
209 static void sigchld_cb(evutil_socket_t fd, short what, void *arg)
214 while ((pid = waitpid(-1, &status, WNOHANG)) > 0) {
215 if (WIFEXITED(status)) {
216 if (WEXITSTATUS(status))
217 LOG(log_info, logtype_default, "child[%d]: exited %d", pid, WEXITSTATUS(status));
219 LOG(log_info, logtype_default, "child[%d]: done", pid);
221 if (WIFSIGNALED(status))
222 LOG(log_info, logtype_default, "child[%d]: killed by signal %d", pid, WTERMSIG(status));
224 LOG(log_info, logtype_default, "child[%d]: died", pid);
228 afpd_pid = NETATALK_SRV_ERROR;
229 else if (pid == cnid_metad_pid)
230 cnid_metad_pid = NETATALK_SRV_ERROR;
231 else if (pid == dbus_pid)
232 dbus_pid = NETATALK_SRV_ERROR;
234 LOG(log_error, logtype_afpd, "Bad pid: %d", pid);
238 && !service_running(afpd_pid)
239 && !service_running(cnid_metad_pid)
240 && !service_running(dbus_pid)) {
241 event_base_loopbreak(base);
246 static void timer_cb(evutil_socket_t fd, short what, void *arg)
251 if (afpd_pid == NETATALK_SRV_NEEDED) {
253 LOG(log_note, logtype_afpd, "Restarting 'afpd' (restarts: %u)", afpd_restarts);
254 if ((afpd_pid = run_process(_PATH_AFPD, "-d", "-F", obj.options.configfile, NULL)) == -1) {
255 LOG(log_error, logtype_default, "Error starting 'afpd'");
259 if (cnid_metad_pid == NETATALK_SRV_NEEDED) {
260 cnid_metad_restarts++;
261 LOG(log_note, logtype_afpd, "Restarting 'cnid_metad' (restarts: %u)", cnid_metad_restarts);
262 if ((cnid_metad_pid = run_process(_PATH_CNID_METAD, "-d", "-F", obj.options.configfile, NULL)) == -1) {
263 LOG(log_error, logtype_default, "Error starting 'cnid_metad'");
268 if (dbus_pid == NETATALK_SRV_NEEDED) {
270 LOG(log_note, logtype_afpd, "Restarting 'dbus' (restarts: %u)", dbus_restarts);
271 if ((dbus_pid = run_process(dbus_path, "--config-file=" _PATH_CONFDIR "dbus-session.conf", NULL)) == -1) {
272 LOG(log_error, logtype_default, "Error starting '%s'", dbus_path);
278 /******************************************************************
280 ******************************************************************/
282 /* kill processes passed as varargs of type "pid_t *", terminate list with NULL */
283 static void kill_childs(int sig, ...)
290 while ((pid = va_arg(args, pid_t *)) != NULL) {
291 if (*pid == NETATALK_SRV_ERROR || *pid == NETATALK_SRV_OPTIONAL)
298 /* this get called when error conditions are met that require us to exit gracefully */
299 static void netatalk_exit(int ret)
301 server_unlock(PATH_NETATALK_LOCK);
305 /* this forks() and exec() "path" with varags as argc[] */
306 static pid_t run_process(const char *path, ...)
310 char *myargv[MYARVSIZE];
314 if ((pid = fork()) < 0) {
315 LOG(log_error, logtype_cnid, "error in fork: %s", strerror(errno));
320 myargv[i++] = (char *)path;
321 va_start(args, path);
322 while (i < MYARVSIZE) {
323 if ((myargv[i++] = va_arg(args, char *)) == NULL)
328 (void)execv(path, myargv);
330 /* Yikes! We're still here, so exec failed... */
331 LOG(log_error, logtype_cnid, "Fatal error in exec: %s", strerror(errno));
337 static void usage(void)
339 printf("usage: netatalk [-F configfile] \n");
342 int main(int argc, char **argv)
344 int c, ret, debug = 0;
348 /* Log SIGBUS/SIGSEGV SBT */
351 while ((c = getopt(argc, argv, ":dF:")) != -1) {
357 obj.cmdlineconfigfile = strdup(optarg);
365 if (check_lockfile("netatalk", PATH_NETATALK_LOCK) != 0)
368 if (!debug && daemonize(0, 0) != 0)
371 if (create_lockfile("netatalk", PATH_NETATALK_LOCK) != 0)
374 sigfillset(&blocksigs);
375 sigprocmask(SIG_SETMASK, &blocksigs, NULL);
377 if (afp_config_parse(&obj, "netatalk") != 0)
378 netatalk_exit(EXITERR_CONF);
380 load_volumes(&obj, lv_all);
382 event_set_log_callback(libevent_logmsg_cb);
383 event_set_fatal_callback(netatalk_exit);
385 LOG(log_note, logtype_default, "Netatalk AFP server starting");
387 if ((afpd_pid = run_process(_PATH_AFPD, "-d", "-F", obj.options.configfile, NULL)) == NETATALK_SRV_ERROR) {
388 LOG(log_error, logtype_afpd, "Error starting 'afpd'");
389 netatalk_exit(EXITERR_CONF);
392 if ((cnid_metad_pid = run_process(_PATH_CNID_METAD, "-d", "-F", obj.options.configfile, NULL)) == NETATALK_SRV_ERROR) {
393 LOG(log_error, logtype_afpd, "Error starting 'cnid_metad'");
394 netatalk_exit(EXITERR_CONF);
397 if ((base = event_base_new()) == NULL) {
398 LOG(log_error, logtype_afpd, "Error starting event loop");
399 netatalk_exit(EXITERR_CONF);
402 sigterm_ev = event_new(base, SIGTERM, EV_SIGNAL, sigterm_cb, NULL);
403 sigquit_ev = event_new(base, SIGQUIT, EV_SIGNAL | EV_PERSIST, sigquit_cb, NULL);
404 sighup_ev = event_new(base, SIGHUP, EV_SIGNAL | EV_PERSIST, sighup_cb, NULL);
405 sigchld_ev = event_new(base, SIGCHLD, EV_SIGNAL | EV_PERSIST, sigchld_cb, NULL);
406 timer_ev = event_new(base, -1, EV_PERSIST, timer_cb, NULL);
411 event_add(sigterm_ev, NULL);
412 event_add(sigquit_ev, NULL);
413 event_add(sigchld_ev, NULL);
414 event_add(sighup_ev, NULL);
415 event_add(timer_ev, &tv);
417 sigfillset(&blocksigs);
418 sigdelset(&blocksigs, SIGTERM);
419 sigdelset(&blocksigs, SIGQUIT);
420 sigdelset(&blocksigs, SIGCHLD);
421 sigdelset(&blocksigs, SIGHUP);
422 sigprocmask(SIG_SETMASK, &blocksigs, NULL);
425 if (obj.options.flags & OPTION_SPOTLIGHT) {
426 setenv("DBUS_SESSION_BUS_ADDRESS", "unix:path=" _PATH_STATEDIR "spotlight.ipc", 1);
427 setenv("XDG_DATA_HOME", _PATH_STATEDIR, 0);
428 setenv("XDG_CACHE_HOME", _PATH_STATEDIR, 0);
429 setenv("TRACKER_USE_LOG_FILES", "1", 0);
431 if (atalk_iniparser_getboolean(obj.iniconfig, INISEC_GLOBAL, "start dbus", 1)) {
432 dbus_path = atalk_iniparser_getstring(obj.iniconfig, INISEC_GLOBAL, "dbus daemon", DBUS_DAEMON_PATH);
433 LOG(log_note, logtype_default, "Starting dbus: %s", dbus_path);
434 if ((dbus_pid = run_process(dbus_path, "--config-file=" _PATH_CONFDIR "dbus-session.conf", NULL)) == NETATALK_SRV_ERROR) {
435 LOG(log_error, logtype_default, "Error starting '%s'", dbus_path);
436 netatalk_exit(EXITERR_CONF);
439 /* Allow dbus some time to start up */
445 if (atalk_iniparser_getboolean(obj.iniconfig, INISEC_GLOBAL, "start tracker", 1)) {
446 LOG(log_note, logtype_default, "Starting Tracker");
447 system(TRACKER_PREFIX "/bin/tracker-control -s");
452 /* Now register with zeroconf, we also need the volumes for that */
453 if (! (obj.options.flags & OPTION_NOZEROCONF)) {
454 zeroconf_register(&obj);
455 LOG(log_note, logtype_default, "Registered with Zeroconf");
458 /* run the event loop */
459 ret = event_base_dispatch(base);
461 if (service_running(afpd_pid) || service_running(cnid_metad_pid) || service_running(dbus_pid)) {
462 if (service_running(afpd_pid))
463 LOG(log_error, logtype_afpd, "AFP service did not shutdown, killing it");
464 if (service_running(cnid_metad_pid))
465 LOG(log_error, logtype_afpd, "CNID database service did not shutdown, killing it");
466 if (service_running(dbus_pid))
467 LOG(log_error, logtype_afpd, "DBUS session daemon still running, killing it");
468 kill_childs(SIGKILL, &afpd_pid, &cnid_metad_pid, &dbus_pid, NULL);
471 LOG(log_note, logtype_afpd, "Netatalk AFP server exiting");