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"
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 list_del(&proc
->list
);
58 ustream_free(&proc
->log
.stream
);
59 close(proc
->log
.fd
.fd
);
63 netifd_log_message(int priority
, const char *format
, ...)
67 if (priority
> log_level
)
72 vsyslog(log_class
[priority
], format
, vl
);
74 vfprintf(stderr
, format
, vl
);
79 netifd_process_log_read_cb(struct ustream
*s
, int bytes
)
81 struct netifd_process
*proc
;
82 const char *log_prefix
;
86 proc
= container_of(s
, struct netifd_process
, log
.stream
);
87 log_prefix
= proc
->log_prefix
;
89 log_prefix
= "process";
94 data
= ustream_get_read_buf(s
, &len
);
98 newline
= strchr(data
, '\n');
100 if (proc
->log_overflow
) {
102 len
= newline
+ 1 - data
;
103 proc
->log_overflow
= false;
105 } else if (newline
) {
107 len
= newline
+ 1 - data
;
108 netifd_log_message(L_NOTICE
, "%s (%d): %s\n",
109 log_prefix
, proc
->uloop
.pid
, data
);
110 } else if (len
== s
->r
.buffer_len
) {
111 netifd_log_message(L_NOTICE
, "%s (%d): %s [...]\n",
112 log_prefix
, proc
->uloop
.pid
, data
);
113 proc
->log_overflow
= true;
117 ustream_consume(s
, len
);
122 netifd_process_cb(struct uloop_process
*proc
, int ret
)
124 struct netifd_process
*np
;
125 np
= container_of(proc
, struct netifd_process
, uloop
);
127 while (ustream_poll(&np
->log
.stream
));
128 netifd_delete_process(np
);
129 return np
->cb(np
, ret
);
133 netifd_start_process(const char **argv
, char **env
, struct netifd_process
*proc
)
138 netifd_kill_process(proc
);
143 if ((pid
= fork()) < 0)
155 if (proc
->dir_fd
>= 0)
156 if (fchdir(proc
->dir_fd
)) {}
160 for (i
= 0; i
<= 2; i
++) {
170 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 static void netifd_do_reload(struct uloop_timeout
*timeout
)
217 static struct uloop_timeout main_timer
;
219 void netifd_reload(void)
221 main_timer
.cb
= netifd_do_reload
;
222 uloop_timeout_set(&main_timer
, 100);
225 void netifd_restart(void)
227 main_timer
.cb
= netifd_do_restart
;
228 interface_set_down(NULL
);
229 uloop_timeout_set(&main_timer
, 1000);
232 static int usage(const char *progname
)
234 fprintf(stderr
, "Usage: %s [options]\n"
236 " -d <mask>: Mask for debug messages\n"
237 " -s <path>: Path to the ubus socket\n"
238 " -p <path>: Path to netifd addons (default: %s)\n"
239 " -h <path>: Path to the hotplug script\n"
240 " -r <path>: Path to resolv.conf\n"
241 " -l <level>: Log output level (default: %d)\n"
242 " -S: Use stderr instead of syslog for log messages\n"
243 " (default: "DEFAULT_HOTPLUG_PATH
")\n"
244 "\n", progname
, main_path
, DEFAULT_LOG_LEVEL
);
250 netifd_handle_signal(int signo
)
256 netifd_setup_signals(void)
260 memset(&s
, 0, sizeof(s
));
261 s
.sa_handler
= netifd_handle_signal
;
263 sigaction(SIGINT
, &s
, NULL
);
264 sigaction(SIGTERM
, &s
, NULL
);
265 sigaction(SIGUSR1
, &s
, NULL
);
266 sigaction(SIGUSR2
, &s
, NULL
);
268 s
.sa_handler
= SIG_IGN
;
269 sigaction(SIGPIPE
, &s
, NULL
);
273 netifd_kill_processes(void)
275 struct netifd_process
*proc
, *tmp
;
277 list_for_each_entry_safe(proc
, tmp
, &process_list
, list
)
278 netifd_kill_process(proc
);
281 int main(int argc
, char **argv
)
283 const char *socket
= NULL
;
288 while ((ch
= getopt(argc
, argv
, "d:s:p:h:r:l:S")) != -1) {
291 debug_mask
= strtoul(optarg
, NULL
, 0);
300 hotplug_cmd_path
= optarg
;
303 resolv_conf
= optarg
;
306 log_level
= atoi(optarg
);
307 if (log_level
>= ARRAY_SIZE(log_class
))
308 log_level
= ARRAY_SIZE(log_class
) - 1;
316 return usage(argv
[0]);
321 openlog("netifd", 0, LOG_DAEMON
);
323 netifd_setup_signals();
324 if (netifd_ubus_init(socket
) < 0) {
325 fprintf(stderr
, "Failed to connect to ubus\n");
332 fprintf(stderr
, "Failed to initialize system control\n");
339 netifd_kill_processes();