procd: service gets deleted when its last instance is freed
[project/procd.git] / procd.c
1 /*
2 * Copyright (C) 2013 Felix Fietkau <nbd@openwrt.org>
3 * Copyright (C) 2013 John Crispin <blogic@openwrt.org>
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU Lesser General Public License version 2.1
7 * as published by the Free Software Foundation
8 *
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.
13 */
14
15 #include <sys/wait.h>
16 #include <sys/types.h>
17 #include <sys/stat.h>
18 #include <sys/reboot.h>
19
20 #include <unistd.h>
21 #include <getopt.h>
22 #include <libgen.h>
23
24 #include "procd.h"
25 #include "watchdog.h"
26 #include "plug/hotplug.h"
27
28 unsigned int debug;
29
30 static int usage(const char *prog)
31 {
32 fprintf(stderr, "Usage: %s [options]\n"
33 "Options:\n"
34 " -s <path> Path to ubus socket\n"
35 " -h <path> run as hotplug daemon\n"
36 " -d <level> Enable debug messages\n"
37 " -S Print messages to stdout\n"
38 "\n", prog);
39 return 1;
40 }
41
42 int main(int argc, char **argv)
43 {
44 int ch;
45 char *dbglvl = getenv("DBGLVL");
46 int ulog_channels = ULOG_KMSG;
47
48 if (dbglvl) {
49 debug = atoi(dbglvl);
50 unsetenv("DBGLVL");
51 }
52
53 while ((ch = getopt(argc, argv, "d:s:h:S")) != -1) {
54 switch (ch) {
55 case 'h':
56 return hotplug_run(optarg);
57 case 's':
58 ubus_socket = optarg;
59 break;
60 case 'd':
61 debug = atoi(optarg);
62 break;
63 case 'S':
64 ulog_channels = ULOG_STDIO;
65 break;
66 default:
67 return usage(argv[0]);
68 }
69 }
70
71 ulog_open(ulog_channels, LOG_DAEMON, "procd");
72
73 setsid();
74 uloop_init();
75 procd_signal();
76 if (getpid() != 1)
77 procd_connect_ubus();
78 else
79 procd_state_next();
80 uloop_run();
81 uloop_done();
82
83 return 0;
84 }