Code

signals: add missing include
[ncmpc.git] / src / signals.c
1 /* ncmpc (Ncurses MPD Client)
2  * (c) 2004-2017 The Music Player Daemon Project
3  * Project homepage: http://musicpd.org
4  *
5  * This program is free software; you can redistribute it and/or modify
6  * it under the terms of the GNU General Public License as published by
7  * the Free Software Foundation; either version 2 of the License, or
8  * (at your option) any later version.
9  *
10  * This program is distributed in the hope that it will be useful,
11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
13  * GNU General Public License for more details.
14  *
15  * You should have received a copy of the GNU General Public License along
16  * with this program; if not, write to the Free Software Foundation, Inc.,
17  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
18  */
20 #include "signals.h"
21 #include "screen.h"
22 #include "Compiler.h"
24 #include <glib-unix.h>
26 #include <stdbool.h>
27 #include <signal.h>
29 static int sigwinch_pipes[2];
31 static gboolean
32 handle_quit_signal(gpointer data)
33 {
34         GMainLoop *main_loop = data;
36         g_main_loop_quit(main_loop);
37         return false;
38 }
40 static gboolean
41 sigwinch_event(gcc_unused GIOChannel *source,
42                gcc_unused GIOCondition condition, gpointer data)
43 {
44         struct mpdclient *c = data;
46         char ignoreme[64];
47         if (1 > read(sigwinch_pipes[0], ignoreme, 64))
48                 exit(EXIT_FAILURE);
50         endwin();
51         refresh();
52         screen_resize(c);
54         return TRUE;
55 }
57 static void
58 catch_sigwinch(gcc_unused int sig)
59 {
60         if (1 != write(sigwinch_pipes[1], "", 1))
61                 exit(EXIT_FAILURE);
62 }
64 void
65 signals_init(GMainLoop *main_loop, struct mpdclient *c)
66 {
67         /* setup quit signals */
68         g_unix_signal_add(SIGTERM, handle_quit_signal, main_loop);
69         g_unix_signal_add(SIGINT, handle_quit_signal, main_loop);
70         g_unix_signal_add(SIGHUP, handle_quit_signal, main_loop);
72         /* setup signal behavior - SIGCONT */
74         struct sigaction act;
75         sigemptyset(&act.sa_mask);
76         act.sa_flags = 0;
78         act.sa_handler = catch_sigwinch;
79         if (sigaction(SIGCONT, &act, NULL) < 0) {
80                 perror("sigaction(SIGCONT)");
81                 exit(EXIT_FAILURE);
82         }
84         /* setup SIGWINCH */
86         act.sa_flags = SA_RESTART;
87         act.sa_handler = catch_sigwinch;
88         if (sigaction(SIGWINCH, &act, NULL) < 0) {
89                 perror("sigaction(SIGWINCH)");
90                 exit(EXIT_FAILURE);
91         }
93 #ifndef WIN32
94         if (!pipe(sigwinch_pipes) &&
95                 !fcntl(sigwinch_pipes[1], F_SETFL, O_NONBLOCK)) {
96                 GIOChannel *sigwinch_channel = g_io_channel_unix_new(sigwinch_pipes[0]);
97                 g_io_add_watch(sigwinch_channel, G_IO_IN, sigwinch_event, c);
98                 g_io_channel_unref(sigwinch_channel);
99         }
100         else {
101                 perror("sigwinch pipe creation failed");
102                 exit(EXIT_FAILURE);
103         }
104 #endif
106         /* ignore SIGPIPE */
108         act.sa_handler = SIG_IGN;
109         if (sigaction(SIGPIPE, &act, NULL) < 0) {
110                 perror("sigaction(SIGPIPE)");
111                 exit(EXIT_FAILURE);
112         }
115 void
116 signals_deinit(void)
118         close(sigwinch_pipes[0]);
119         close(sigwinch_pipes[1]);