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112358f3 MT |
1 | /*############################################################################# |
2 | # # | |
3 | # IPFire.org - A linux based firewall # | |
4 | # Copyright (C) 2023 IPFire Network Development Team # | |
5 | # # | |
6 | # This program is free software: you can redistribute it and/or modify # | |
7 | # it under the terms of the GNU General Public License as published by # | |
8 | # the Free Software Foundation, either version 3 of the License, or # | |
9 | # (at your option) any later version. # | |
10 | # # | |
11 | # This program is distributed in the hope that it will be useful, # | |
12 | # but WITHOUT ANY WARRANTY; without even the implied warranty of # | |
13 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # | |
14 | # GNU General Public License for more details. # | |
15 | # # | |
16 | # You should have received a copy of the GNU General Public License # | |
17 | # along with this program. If not, see <http://www.gnu.org/licenses/>. # | |
18 | # # | |
19 | #############################################################################*/ | |
20 | ||
21 | #include <stdlib.h> | |
22 | ||
c7e1b5db MT |
23 | #include <systemd/sd-event.h> |
24 | ||
112358f3 MT |
25 | #include "daemon.h" |
26 | ||
27 | struct nw_daemon { | |
28 | int nrefs; | |
c7e1b5db MT |
29 | |
30 | // Event Loop | |
31 | sd_event* loop; | |
112358f3 MT |
32 | }; |
33 | ||
c7e1b5db MT |
34 | static int nw_daemon_setup_loop(struct nw_daemon* daemon) { |
35 | int r; | |
36 | ||
37 | // Fetch a reference to the default event loop | |
38 | r = sd_event_default(&daemon->loop); | |
39 | if (r < 0) { | |
40 | //ERROR("Could not setup event loop: %m\n"); | |
41 | return 1; | |
42 | } | |
43 | ||
3b2316e4 MT |
44 | // Enable the watchdog |
45 | r = sd_event_set_watchdog(daemon->loop, 1); | |
46 | if (r < 0) { | |
47 | //ERROR("Could not activate watchdog: %m\n"); | |
48 | return 1; | |
49 | } | |
50 | ||
c7e1b5db MT |
51 | return 0; |
52 | } | |
53 | ||
54 | static int nw_daemon_setup(struct nw_daemon* daemon) { | |
55 | int r; | |
56 | ||
57 | // Setup the event loop | |
58 | r = nw_daemon_setup_loop(daemon); | |
59 | if (r) | |
60 | return r; | |
61 | ||
62 | return 0; | |
63 | } | |
64 | ||
112358f3 | 65 | int nw_daemon_create(struct nw_daemon** daemon) { |
c7e1b5db MT |
66 | int r; |
67 | ||
112358f3 MT |
68 | struct nw_daemon* d = calloc(1, sizeof(*d)); |
69 | if (!d) | |
70 | return 1; | |
71 | ||
72 | // Initialize reference counter | |
73 | d->nrefs = 1; | |
74 | ||
c7e1b5db MT |
75 | // Setup the daemon |
76 | r = nw_daemon_setup(d); | |
77 | if (r) | |
78 | goto ERROR; | |
79 | ||
80 | // Set the reference | |
81 | *daemon = d; | |
82 | ||
112358f3 | 83 | return 0; |
c7e1b5db MT |
84 | |
85 | ERROR: | |
86 | nw_daemon_unref(d); | |
87 | ||
88 | return r; | |
112358f3 MT |
89 | } |
90 | ||
91 | static void nw_daemon_free(struct nw_daemon* daemon) { | |
c7e1b5db MT |
92 | if (daemon->loop) |
93 | sd_event_unref(daemon->loop); | |
94 | ||
112358f3 MT |
95 | free(daemon); |
96 | } | |
97 | ||
98 | struct nw_daemon* nw_daemon_ref(struct nw_daemon* daemon) { | |
99 | daemon->nrefs++; | |
100 | ||
101 | return daemon; | |
102 | } | |
103 | ||
104 | struct nw_daemon* nw_daemon_unref(struct nw_daemon* daemon) { | |
105 | if (--daemon->nrefs > 0) | |
106 | return daemon; | |
107 | ||
108 | nw_daemon_free(daemon); | |
109 | return NULL; | |
110 | } | |
c7e1b5db MT |
111 | |
112 | /* | |
113 | This function contains the main loop of the daemon... | |
114 | */ | |
115 | int nw_daemon_run(struct nw_daemon* daemon) { | |
116 | int r; | |
117 | ||
118 | // Launch the event loop | |
119 | r = sd_event_loop(daemon->loop); | |
120 | if (r) { | |
121 | //ERROR("Could not run the event loop: %m\n"); | |
122 | return r; | |
123 | } | |
124 | ||
125 | return 0; | |
126 | } |