2 * netifd - network interface daemon
3 * Copyright (C) 2012 Felix Fietkau <nbd@openwrt.org>
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License version 2
7 * as published by the Free Software Foundation
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.
27 #include "interface.h"
29 unsigned int debug_mask = 0;
30 const char *main_path = DEFAULT_MAIN_PATH;
31 const char *resolv_conf = DEFAULT_RESOLV_CONF;
32 static char **global_argv;
34 static struct list_head process_list = LIST_HEAD_INIT(process_list);
36 #define DEFAULT_LOG_LEVEL L_NOTICE
38 static int log_level = DEFAULT_LOG_LEVEL;
39 static const int log_class[] = {
41 [L_WARNING] = LOG_WARNING,
42 [L_NOTICE] = LOG_NOTICE,
48 #define use_syslog false
50 static bool use_syslog = true;
55 netifd_delete_process(struct netifd_process *proc)
57 if (proc->uloop.pending)
58 uloop_process_delete(&proc->uloop);
59 list_del(&proc->list);
60 ustream_free(&proc->log.stream);
61 close(proc->log.fd.fd);
65 netifd_log_message(int priority, const char *format, ...)
69 if (priority > log_level)
74 vsyslog(log_class[priority], format, vl);
76 vfprintf(stderr, format, vl);
81 netifd_process_log_read_cb(struct ustream *s, int bytes)
83 struct netifd_process *proc;
84 const char *log_prefix;
88 proc = container_of(s, struct netifd_process, log);
89 log_prefix = proc->log_prefix;
91 log_prefix = "process";
96 data = ustream_get_read_buf(s, &len);
100 newline = strchr(data, '\n');
102 if (proc->log_overflow) {
104 len = newline + 1 - data;
105 proc->log_overflow = false;
107 } else if (newline) {
109 len = newline + 1 - data;
110 netifd_log_message(L_NOTICE, "%s (%d): %s\n",
111 log_prefix, proc->uloop.pid, data);
112 } else if (len == s->r.buffer_len) {
113 netifd_log_message(L_NOTICE, "%s (%d): %s [...]\n",
114 log_prefix, proc->uloop.pid, data);
115 proc->log_overflow = true;
117 ustream_consume(s, len);
121 static void netifd_process_log_state_cb(struct ustream *s)
126 netifd_process_cb(struct uloop_process *proc, int ret)
128 struct netifd_process *np;
129 np = container_of(proc, struct netifd_process, uloop);
131 while (ustream_poll(&np->log.stream));
132 netifd_delete_process(np);
133 return np->cb(np, ret);
137 netifd_start_process(const char **argv, char **env, struct netifd_process *proc)
142 netifd_kill_process(proc);
147 if ((pid = fork()) < 0)
157 if (proc->dir_fd >= 0)
158 fchdir(proc->dir_fd);
167 execvp(argv[0], (char **) argv);
175 proc->uloop.cb = netifd_process_cb;
176 proc->uloop.pid = pid;
177 uloop_process_add(&proc->uloop);
178 list_add_tail(&proc->list, &process_list);
180 system_fd_set_cloexec(pfds[0]);
181 proc->log.stream.string_data = true;
182 proc->log.stream.notify_read = netifd_process_log_read_cb;
183 proc->log.stream.notify_state = netifd_process_log_state_cb;
184 ustream_fd_init(&proc->log, pfds[0]);
195 netifd_kill_process(struct netifd_process *proc)
197 if (!proc->uloop.pending)
200 kill(proc->uloop.pid, SIGKILL);
201 netifd_delete_process(proc);
204 static void netifd_do_restart(struct uloop_timeout *timeout)
206 execvp(global_argv[0], global_argv);
209 static void netifd_do_reload(struct uloop_timeout *timeout)
214 static struct uloop_timeout main_timer;
216 void netifd_reload(void)
218 main_timer.cb = netifd_do_reload;
219 uloop_timeout_set(&main_timer, 100);
222 void netifd_restart(void)
224 main_timer.cb = netifd_do_restart;
225 interface_set_down(NULL);
226 uloop_timeout_set(&main_timer, 1000);
229 static int usage(const char *progname)
231 fprintf(stderr, "Usage: %s [options]\n"
233 " -d <mask>: Mask for debug messages\n"
234 " -s <path>: Path to the ubus socket\n"
235 " -p <path>: Path to netifd addons (default: %s)\n"
236 " -h <path>: Path to the hotplug script\n"
237 " -r <path>: Path to resolv.conf\n"
238 " -l <level>: Log output level (default: %d)\n"
239 " -S: Use stderr instead of syslog for log messages\n"
240 " (default: "DEFAULT_HOTPLUG_PATH")\n"
241 "\n", progname, main_path, DEFAULT_LOG_LEVEL);
247 netifd_handle_signal(int signo)
253 netifd_setup_signals(void)
257 memset(&s, 0, sizeof(s));
258 s.sa_handler = netifd_handle_signal;
260 sigaction(SIGINT, &s, NULL);
261 sigaction(SIGTERM, &s, NULL);
262 sigaction(SIGUSR1, &s, NULL);
263 sigaction(SIGUSR2, &s, NULL);
265 s.sa_handler = SIG_IGN;
266 sigaction(SIGPIPE, &s, NULL);
270 netifd_kill_processes(void)
272 struct netifd_process *proc, *tmp;
274 list_for_each_entry_safe(proc, tmp, &process_list, list)
275 netifd_kill_process(proc);
278 int main(int argc, char **argv)
280 const char *socket = NULL;
285 while ((ch = getopt(argc, argv, "d:s:p:h:r:l:S")) != -1) {
288 debug_mask = strtoul(optarg, NULL, 0);
297 hotplug_cmd_path = optarg;
300 resolv_conf = optarg;
303 log_level = atoi(optarg);
304 if (log_level >= ARRAY_SIZE(log_class))
305 log_level = ARRAY_SIZE(log_class) - 1;
313 return usage(argv[0]);
318 openlog("netifd", 0, LOG_DAEMON);
320 netifd_setup_signals();
321 if (netifd_ubus_init(socket) < 0) {
322 fprintf(stderr, "Failed to connect to ubus\n");
327 fprintf(stderr, "Failed to initialize system control\n");
334 netifd_kill_processes();