1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
|
/*
* Copyright (C) 2013 Felix Fietkau <nbd@openwrt.org>
* Copyright (C) 2013 John Crispin <blogic@openwrt.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License version 2.1
* as published by the Free Software Foundation
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <sys/resource.h>
#include <stdlib.h>
#include <unistd.h>
#include <signal.h>
#include "procd.h"
char *ubus_socket = NULL;
static struct ubus_context *ctx;
static struct uloop_process ubus_proc;
static bool ubus_connected = false;
static struct uloop_timeout retry;
static int reconnect = 1;
static void procd_ubus_connection_lost(struct ubus_context *old_ctx);
static void ubus_proc_cb(struct uloop_process *proc, int ret)
{
/* nothing to do here */
}
static void procd_restart_ubus(void)
{
char *argv[] = { "ubusd", NULL, ubus_socket, NULL };
if (ubus_proc.pending) {
ERROR("Killing existing ubus instance, pid=%d\n", (int) ubus_proc.pid);
kill(ubus_proc.pid, SIGKILL);
uloop_process_delete(&ubus_proc);
}
if (ubus_socket)
argv[1] = "-s";
ubus_proc.pid = fork();
if (!ubus_proc.pid) {
setpriority(PRIO_PROCESS, 0, -20);
execvp(argv[0], argv);
exit(-1);
}
if (ubus_proc.pid <= 0) {
ERROR("Failed to start new ubus instance\n");
return;
}
DEBUG(1, "Launched new ubus instance, pid=%d\n", (int) ubus_proc.pid);
uloop_process_add(&ubus_proc);
}
static void procd_ubus_try_connect(void)
{
if (ctx) {
ubus_connected = !ubus_reconnect(ctx, ubus_socket);
return;
}
ctx = ubus_connect(ubus_socket);
if (!ctx) {
ubus_connected = false;
DEBUG(2, "Connection to ubus failed\n");
return;
}
ctx->connection_lost = procd_ubus_connection_lost;
ubus_connected = true;
ubus_init_service(ctx);
ubus_init_system(ctx);
if (getpid() == 1)
ubus_init_log(ctx);
}
static void
procd_ubus_reconnect_timer(struct uloop_timeout *timeout)
{
procd_ubus_try_connect();
if (ubus_connected) {
DEBUG(1, "Connected to ubus, id=%08x\n", ctx->local_id);
ubus_add_uloop(ctx);
return;
}
uloop_timeout_set(&retry, 1000);
procd_restart_ubus();
}
static void procd_ubus_connection_lost(struct ubus_context *old_ctx)
{
retry.cb = procd_ubus_reconnect_timer;
procd_restart_ubus();
uloop_timeout_set(&retry, 1000);
}
void procd_connect_ubus(void)
{
ubus_proc.cb = ubus_proc_cb;
procd_ubus_connection_lost(NULL);
}
void procd_reconnect_ubus(int _reconnect)
{
reconnect = _reconnect;
}
|
