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 /* forward declaration */
39 static pid_t run_process(const char *path, ...);
41 /* static variables */
43 static sig_atomic_t got_chldsig;
44 static pid_t afpd_pid, cnid_metad_pid;
45 static uint afpd_restarts, cnid_metad_restarts;
46 static struct event_base *base;
49 static void libevent_logmsg_cb(int severity, const char *msg)
52 case _EVENT_LOG_DEBUG:
53 LOG(log_debug, logtype_default, "libevent: %s", msg);
56 LOG(log_info, logtype_default, "libevent: %s", msg);
59 LOG(log_warning, logtype_default, "libevent: %s", msg);
62 LOG(log_error, logtype_default, "libevent: %s", msg);
65 LOG(log_error, logtype_default, "libevent: %s", msg);
66 break; /* never reached */
70 static void sigterm_cb(evutil_socket_t fd, short what, void *arg)
72 LOG(log_note, logtype_afpd, "Exiting on SIGTERM");
73 kill(afpd_pid, SIGTERM);
74 kill(cnid_metad_pid, SIGTERM);
75 server_unlock(_PATH_NETATALK_LOCK);
76 event_base_loopbreak(base);
79 static void sigquit_cb(evutil_socket_t fd, short what, void *arg)
81 LOG(log_note, logtype_afpd, "Exiting on SIGQUIT");
82 kill(afpd_pid, SIGTERM);
83 kill(cnid_metad_pid, SIGTERM);
84 server_unlock(_PATH_NETATALK_LOCK);
85 event_base_loopbreak(base);
88 static void sigchld_cb(evutil_socket_t fd, short what, void *arg)
93 LOG(log_note, logtype_afpd, "Got SIGCHLD event");
95 while ((pid = waitpid(-1, &status, WNOHANG)) > 0) {
96 if (WIFEXITED(status)) {
97 if (WEXITSTATUS(status))
98 LOG(log_info, logtype_afpd, "child[%d]: exited %d", pid, WEXITSTATUS(status));
100 LOG(log_info, logtype_afpd, "child[%d]: done", pid);
102 if (WIFSIGNALED(status))
103 LOG(log_info, logtype_afpd, "child[%d]: killed by signal %d", pid, WTERMSIG(status));
105 LOG(log_info, logtype_afpd, "child[%d]: died", pid);
108 if (pid == afpd_pid) {
111 LOG(log_note, logtype_afpd, "Restarting 'afpd' (restart: %u)", afpd_restarts);
112 if ((afpd_pid = run_process(_PATH_AFPD, "-d", "-F", obj.options.configfile, NULL)) == -1) {
113 LOG(log_error, logtype_afpd, "Error starting 'afpd'");
115 } else if (pid = cnid_metad_pid) {
117 cnid_metad_restarts++;
118 LOG(log_note, logtype_afpd, "Restarting 'cnid_metad' (restart: %u)", cnid_metad_restarts);
119 if ((cnid_metad_pid = run_process(_PATH_CNID_METAD, "-d", "-F", obj.options.configfile, NULL)) == -1) {
120 LOG(log_error, logtype_afpd, "Error starting 'cnid_metad'");
123 LOG(log_error, logtype_afpd, "Bad pid: %d", pid);
128 /* other functions */
130 static void netatalk_exit(int ret)
132 server_unlock(_PATH_NETATALK_LOCK);
136 static pid_t run_process(const char *path, ...)
143 if ((pid = fork()) < 0) {
144 LOG(log_error, logtype_cnid, "error in fork: %s", strerror(errno));
149 myargv[i++] = (char *)path;
150 va_start(args, path);
151 while ((myargv[i++] = va_arg(args, char *)) != NULL)
155 ret = execv(path, myargv);
157 /* Yikes! We're still here, so exec failed... */
158 LOG(log_error, logtype_cnid, "Fatal error in exec: %s", strerror(errno));
164 static void usage(void)
166 printf("usage: netatalk [-F configfile] \n");
169 int main(int argc, char **argv)
171 const char *configfile = NULL;
172 int c, ret, debug = 0;
175 /* Log SIGBUS/SIGSEGV SBT */
178 while ((c = getopt(argc, argv, ":dF:")) != -1) {
184 obj.cmdlineconfigfile = strdup(optarg);
192 if (check_lockfile("netatalk", _PATH_NETATALK_LOCK) != 0)
195 if (!debug && daemonize(0, 0) != 0)
198 if (create_lockfile("netatalk", _PATH_NETATALK_LOCK) != 0)
201 sigfillset(&blocksigs);
202 sigprocmask(SIG_SETMASK, &blocksigs, NULL);
204 if (afp_config_parse(&obj) != 0)
205 netatalk_exit(EXITERR_CONF);
207 set_processname("netatalk");
208 setuplog(obj.options.logconfig, obj.options.logfile);
209 event_set_log_callback(libevent_logmsg_cb);
210 event_set_fatal_callback(netatalk_exit);
212 LOG(log_note, logtype_default, "Netatalk AFP server starting");
214 if ((afpd_pid = run_process(_PATH_AFPD, "-d", "-F", obj.options.configfile, NULL)) == -1) {
215 LOG(log_error, logtype_afpd, "Error starting 'cnid_metad'");
216 netatalk_exit(EXITERR_CONF);
219 if ((cnid_metad_pid = run_process(_PATH_CNID_METAD, "-d", "-F", obj.options.configfile, NULL)) == -1) {
220 LOG(log_error, logtype_afpd, "Error starting 'cnid_metad'");
221 netatalk_exit(EXITERR_CONF);
224 if ((base = event_base_new()) == NULL) {
225 LOG(log_error, logtype_afpd, "Error starting event loop");
226 netatalk_exit(EXITERR_CONF);
229 struct event *sigterm_ev, *sigquit_ev, *sigchld_ev;
230 sigterm_ev = event_new(base, SIGTERM, EV_SIGNAL|EV_PERSIST, sigterm_cb, NULL);
231 sigquit_ev = event_new(base, SIGQUIT, EV_SIGNAL|EV_PERSIST, sigquit_cb, NULL);
232 sigchld_ev = event_new(base, SIGCHLD, EV_SIGNAL|EV_PERSIST, sigchld_cb, NULL);
234 event_add(sigterm_ev, NULL);
235 event_add(sigquit_ev, NULL);
236 event_add(sigchld_ev, NULL);
238 sigfillset(&blocksigs);
239 sigdelset(&blocksigs, SIGTERM);
240 sigdelset(&blocksigs, SIGQUIT);
241 sigdelset(&blocksigs, SIGCHLD);
242 sigprocmask(SIG_SETMASK, &blocksigs, NULL);
244 /* run the event loop */
245 ret = event_base_dispatch(base);