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"
31 unsigned int debug_mask
= 0;
32 const char *main_path
= DEFAULT_MAIN_PATH
;
33 const char *config_path
= DEFAULT_CONFIG_PATH
;
34 const char *resolv_conf
= DEFAULT_RESOLV_CONF
;
35 static char **global_argv
;
37 static struct list_head process_list
= LIST_HEAD_INIT(process_list
);
39 #define DEFAULT_LOG_LEVEL L_NOTICE
41 static int log_level
= DEFAULT_LOG_LEVEL
;
42 static const int log_class
[] = {
44 [L_WARNING
] = LOG_WARNING
,
45 [L_NOTICE
] = LOG_NOTICE
,
51 #define use_syslog false
53 static bool use_syslog
= true;
58 netifd_delete_process(struct netifd_process
*proc
)
60 while (ustream_poll(&proc
->log
.stream
));
61 list_del(&proc
->list
);
62 ustream_free(&proc
->log
.stream
);
63 close(proc
->log
.fd
.fd
);
67 netifd_log_message(int priority
, const char *format
, ...)
71 if (priority
> log_level
)
76 vsyslog(log_class
[priority
], format
, vl
);
78 vfprintf(stderr
, format
, vl
);
83 netifd_process_log_read_cb(struct ustream
*s
, int bytes
)
85 struct netifd_process
*proc
;
86 const char *log_prefix
;
90 proc
= container_of(s
, struct netifd_process
, log
.stream
);
91 log_prefix
= proc
->log_prefix
;
93 log_prefix
= "process";
98 data
= ustream_get_read_buf(s
, &len
);
102 newline
= strchr(data
, '\n');
104 if (proc
->log_overflow
) {
106 len
= newline
+ 1 - data
;
107 proc
->log_overflow
= false;
109 } else if (newline
) {
111 len
= newline
+ 1 - data
;
112 netifd_log_message(L_NOTICE
, "%s (%d): %s\n",
113 log_prefix
, proc
->uloop
.pid
, data
);
114 } else if (len
== s
->r
.buffer_len
) {
115 netifd_log_message(L_NOTICE
, "%s (%d): %s [...]\n",
116 log_prefix
, proc
->uloop
.pid
, data
);
117 proc
->log_overflow
= true;
121 ustream_consume(s
, len
);
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 netifd_delete_process(np
);
132 return np
->cb(np
, ret
);
136 netifd_start_process(const char **argv
, char **env
, struct netifd_process
*proc
)
141 netifd_kill_process(proc
);
146 if ((pid
= fork()) < 0)
158 if (proc
->dir_fd
>= 0)
159 if (fchdir(proc
->dir_fd
)) {}
163 for (i
= 0; i
<= 2; i
++) {
173 execvp(argv
[0], (char **) argv
);
178 proc
->uloop
.cb
= netifd_process_cb
;
179 proc
->uloop
.pid
= pid
;
180 uloop_process_add(&proc
->uloop
);
181 list_add_tail(&proc
->list
, &process_list
);
183 system_fd_set_cloexec(pfds
[0]);
184 proc
->log
.stream
.string_data
= true;
185 proc
->log
.stream
.notify_read
= netifd_process_log_read_cb
;
186 ustream_fd_init(&proc
->log
, pfds
[0]);
197 netifd_kill_process(struct netifd_process
*proc
)
199 if (!proc
->uloop
.pending
)
202 kill(proc
->uloop
.pid
, SIGKILL
);
203 uloop_process_delete(&proc
->uloop
);
204 netifd_delete_process(proc
);
207 static void netifd_do_restart(struct uloop_timeout
*timeout
)
209 execvp(global_argv
[0], global_argv
);
212 int netifd_reload(void)
214 return config_init_all();
217 void netifd_restart(void)
219 static struct uloop_timeout main_timer
= {
220 .cb
= netifd_do_restart
223 interface_set_down(NULL
);
224 uloop_timeout_set(&main_timer
, 1000);
227 static int usage(const char *progname
)
229 fprintf(stderr
, "Usage: %s [options]\n"
231 " -d <mask>: Mask for debug messages\n"
232 " -s <path>: Path to the ubus socket\n"
233 " -p <path>: Path to netifd addons (default: %s)\n"
234 " -c <path>: Path to UCI configuration\n"
235 " -h <path>: Path to the hotplug script\n"
236 " (default: "DEFAULT_HOTPLUG_PATH
")\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 "\n", progname
, main_path
, DEFAULT_LOG_LEVEL
);
246 netifd_handle_signal(int signo
)
252 netifd_setup_signals(void)
256 memset(&s
, 0, sizeof(s
));
257 s
.sa_handler
= netifd_handle_signal
;
259 sigaction(SIGINT
, &s
, NULL
);
260 sigaction(SIGTERM
, &s
, NULL
);
261 sigaction(SIGUSR1
, &s
, NULL
);
262 sigaction(SIGUSR2
, &s
, NULL
);
264 s
.sa_handler
= SIG_IGN
;
265 sigaction(SIGPIPE
, &s
, NULL
);
269 netifd_kill_processes(void)
271 struct netifd_process
*proc
, *tmp
;
273 list_for_each_entry_safe(proc
, tmp
, &process_list
, list
)
274 netifd_kill_process(proc
);
277 int main(int argc
, char **argv
)
279 const char *socket
= NULL
;
284 while ((ch
= getopt(argc
, argv
, "d:s:p:c:h:r:l:S")) != -1) {
287 debug_mask
= strtoul(optarg
, NULL
, 0);
296 config_path
= optarg
;
299 hotplug_cmd_path
= optarg
;
302 resolv_conf
= optarg
;
305 log_level
= atoi(optarg
);
306 if (log_level
>= ARRAY_SIZE(log_class
))
307 log_level
= ARRAY_SIZE(log_class
) - 1;
315 return usage(argv
[0]);
320 openlog("netifd", 0, LOG_DAEMON
);
322 netifd_setup_signals();
323 if (netifd_ubus_init(socket
) < 0) {
324 fprintf(stderr
, "Failed to connect to ubus\n");
333 fprintf(stderr
, "Failed to initialize system control\n");
340 netifd_kill_processes();