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.
26 #include "interface.h"
30 unsigned int debug_mask = 0;
31 const char *main_path = DEFAULT_MAIN_PATH;
32 const char *resolv_conf = DEFAULT_RESOLV_CONF;
33 static char **global_argv;
35 static struct list_head process_list = LIST_HEAD_INIT(process_list);
37 #define DEFAULT_LOG_LEVEL L_NOTICE
39 static int log_level = DEFAULT_LOG_LEVEL;
40 static const int log_class[] = {
42 [L_WARNING] = LOG_WARNING,
43 [L_NOTICE] = LOG_NOTICE,
49 #define use_syslog false
51 static bool use_syslog = true;
56 netifd_delete_process(struct netifd_process *proc)
58 list_del(&proc->list);
59 ustream_free(&proc->log.stream);
60 close(proc->log.fd.fd);
64 netifd_log_message(int priority, const char *format, ...)
68 if (priority > log_level)
73 vsyslog(log_class[priority], format, vl);
75 vfprintf(stderr, format, vl);
80 netifd_process_log_read_cb(struct ustream *s, int bytes)
82 struct netifd_process *proc;
83 const char *log_prefix;
87 proc = container_of(s, struct netifd_process, log.stream);
88 log_prefix = proc->log_prefix;
90 log_prefix = "process";
95 data = ustream_get_read_buf(s, &len);
99 newline = strchr(data, '\n');
101 if (proc->log_overflow) {
103 len = newline + 1 - data;
104 proc->log_overflow = false;
106 } else if (newline) {
108 len = newline + 1 - data;
109 netifd_log_message(L_NOTICE, "%s (%d): %s\n",
110 log_prefix, proc->uloop.pid, data);
111 } else if (len == s->r.buffer_len) {
112 netifd_log_message(L_NOTICE, "%s (%d): %s [...]\n",
113 log_prefix, proc->uloop.pid, data);
114 proc->log_overflow = true;
118 ustream_consume(s, len);
123 netifd_process_cb(struct uloop_process *proc, int ret)
125 struct netifd_process *np;
126 np = container_of(proc, struct netifd_process, uloop);
128 while (ustream_poll(&np->log.stream));
129 netifd_delete_process(np);
130 return np->cb(np, ret);
134 netifd_start_process(const char **argv, char **env, struct netifd_process *proc)
139 netifd_kill_process(proc);
144 if ((pid = fork()) < 0)
156 if (proc->dir_fd >= 0)
157 if (fchdir(proc->dir_fd)) {}
161 for (i = 0; i <= 2; i++) {
171 execvp(argv[0], (char **) argv);
179 proc->uloop.cb = netifd_process_cb;
180 proc->uloop.pid = pid;
181 uloop_process_add(&proc->uloop);
182 list_add_tail(&proc->list, &process_list);
184 system_fd_set_cloexec(pfds[0]);
185 proc->log.stream.string_data = true;
186 proc->log.stream.notify_read = netifd_process_log_read_cb;
187 ustream_fd_init(&proc->log, pfds[0]);
198 netifd_kill_process(struct netifd_process *proc)
200 if (!proc->uloop.pending)
203 kill(proc->uloop.pid, SIGKILL);
204 uloop_process_delete(&proc->uloop);
205 netifd_delete_process(proc);
208 static void netifd_do_restart(struct uloop_timeout *timeout)
210 execvp(global_argv[0], global_argv);
213 static void netifd_do_reload(struct uloop_timeout *timeout)
218 static struct uloop_timeout main_timer;
220 void netifd_reload(void)
222 main_timer.cb = netifd_do_reload;
223 uloop_timeout_set(&main_timer, 100);
226 void netifd_restart(void)
228 main_timer.cb = netifd_do_restart;
229 interface_set_down(NULL);
230 uloop_timeout_set(&main_timer, 1000);
233 static int usage(const char *progname)
235 fprintf(stderr, "Usage: %s [options]\n"
237 " -d <mask>: Mask for debug messages\n"
238 " -s <path>: Path to the ubus socket\n"
239 " -p <path>: Path to netifd addons (default: %s)\n"
240 " -h <path>: Path to the hotplug script\n"
241 " -r <path>: Path to resolv.conf\n"
242 " -l <level>: Log output level (default: %d)\n"
243 " -S: Use stderr instead of syslog for log messages\n"
244 " (default: "DEFAULT_HOTPLUG_PATH")\n"
245 "\n", progname, main_path, DEFAULT_LOG_LEVEL);
251 netifd_handle_signal(int signo)
257 netifd_setup_signals(void)
261 memset(&s, 0, sizeof(s));
262 s.sa_handler = netifd_handle_signal;
264 sigaction(SIGINT, &s, NULL);
265 sigaction(SIGTERM, &s, NULL);
266 sigaction(SIGUSR1, &s, NULL);
267 sigaction(SIGUSR2, &s, NULL);
269 s.sa_handler = SIG_IGN;
270 sigaction(SIGPIPE, &s, NULL);
274 netifd_kill_processes(void)
276 struct netifd_process *proc, *tmp;
278 list_for_each_entry_safe(proc, tmp, &process_list, list)
279 netifd_kill_process(proc);
282 int main(int argc, char **argv)
284 const char *socket = NULL;
289 while ((ch = getopt(argc, argv, "d:s:p:h:r:l:S")) != -1) {
292 debug_mask = strtoul(optarg, NULL, 0);
301 hotplug_cmd_path = optarg;
304 resolv_conf = optarg;
307 log_level = atoi(optarg);
308 if (log_level >= ARRAY_SIZE(log_class))
309 log_level = ARRAY_SIZE(log_class) - 1;
317 return usage(argv[0]);
322 openlog("netifd", 0, LOG_DAEMON);
324 netifd_setup_signals();
325 if (netifd_ubus_init(socket) < 0) {
326 fprintf(stderr, "Failed to connect to ubus\n");
334 fprintf(stderr, "Failed to initialize system control\n");
341 netifd_kill_processes();