Ignoring SIGCHLD signal as exit status if child process is not required.
[platform/core/connectivity/stc-manager.git] / src / stc-manager.c
1 /*
2  * Copyright (c) 2016 Samsung Electronics Co., Ltd.
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  * http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16
17 #include <signal.h>
18 #include "stc-manager.h"
19 #include "stc-emulator.h"
20 #include "stc-statistics.h"
21 #include "stc-restriction.h"
22 #include "stc-manager-gdbus.h"
23 #include "stc-db.h"
24 #include "counter.h"
25 #include "table-restrictions.h"
26 #include "helper-cgroup.h"
27 #include "helper-nfacct-rule.h"
28 #include "stc-monitor.h"
29 #include "stc-manager-plugin.h"
30
31 static stc_s *g_stc = NULL;
32
33 static void __stc_manager_deinit(void)
34 {
35         __STC_LOG_FUNC_ENTER__;
36
37         if (!g_stc) {
38                 STC_LOGE("Memory for manager structure is not allocated");
39                 return;
40         }
41
42         stc_monitor_deinit();
43         stc_deinit_db_guard();
44         stc_db_deinitialize();
45         stc_manager_gdbus_deinit((gpointer)g_stc);
46         stc_manager_plugin_deinit();
47
48         STC_LOGI("stc manager deinitialized");
49         FREE(g_stc);
50         __STC_LOG_FUNC_EXIT__;
51 }
52
53 static stc_s *__stc_manager_init(void)
54 {
55         __STC_LOG_FUNC_ENTER__;
56         stc_s *stc;
57
58         stc = MALLOC0(stc_s, 1);
59         if (!stc) {
60                 STC_LOGE("Failed to allocate memory for manager structure");
61                 return NULL;
62         }
63         g_stc = stc;
64
65         cgroup_set_release_agent(NET_CLS_SUBSYS, NET_RELEASE_AGENT);
66
67         EXEC(STC_ERROR_NONE, stc_db_initialize());
68
69         stc_monitor_init();
70         stc_manager_gdbus_init((gpointer)stc);
71         stc_manager_plugin_init();
72
73         STC_LOGI("stc manager initialized");
74         __STC_LOG_FUNC_EXIT__;
75         return stc;
76
77 handle_error:
78         STC_LOGD("Failed to initialize stc manager");
79         __stc_manager_deinit();
80         return NULL;
81 }
82
83 stc_s *stc_get_manager(void)
84 {
85         return g_stc;
86 }
87
88 gint32 main(gint32 argc, gchar *argv[])
89 {
90         GMainLoop *main_loop = NULL;
91         gint32 ret = -1;
92
93         signal(SIGCHLD, SIG_IGN);
94
95         STC_LOGI("Smart Traffic Control Manager");
96
97         if (daemon(0, 0) != 0)
98                 STC_LOGE("Can't start daemon");
99
100         /* Initialize required subsystems */
101 #if !GLIB_CHECK_VERSION(2, 35, 0)
102         g_type_init();
103 #endif
104
105         /* Crate the GLIB main loop */
106         main_loop = g_main_loop_new(NULL, FALSE);
107
108         stc_emulator_check_environment();
109         if (stc_emulator_is_emulated() == FALSE) {
110                 g_stc = __stc_manager_init();
111                 if (!g_stc)
112                         goto fail;
113                 g_stc->main_loop = main_loop;
114         }
115
116         /* Run the main loop */
117         g_main_loop_run(main_loop);
118
119         ret = 0;
120
121 fail:
122         if (stc_emulator_is_emulated() == FALSE)
123                 __stc_manager_deinit();
124
125         if (main_loop)
126                 g_main_loop_unref(main_loop);
127
128         return ret;
129 }