src/sig_handlers.c

   1 /*
   2  * Copyright (C) 2003-2010 The Music Player Daemon Project
   3  * http://www.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  */
  19
  20 #include "config.h"
  21 #include "sig_handlers.h"
  22
  23 #ifndef WIN32
  24
  25 #include "log.h"
  26 #include "main.h"
  27 #include "event_pipe.h"
  28
  29 #include <glib.h>
  30
  31 #include <signal.h>
  32 #include <errno.h>
  33 #include <string.h>
  34
  35 static void exit_signal_handler(G_GNUC_UNUSED int signum)
  36 {
  37         g_main_loop_quit(main_loop);
  38 }
  39
  40 static void reload_signal_handler(G_GNUC_UNUSED int signum)
  41 {
  42         event_pipe_emit_fast(PIPE_EVENT_RELOAD);
  43 }
  44
  45 static void
  46 x_sigaction(int signum, const struct sigaction *act)
  47 {
  48         if (sigaction(signum, act, NULL) < 0)
  49                 g_error("sigaction() failed: %s", strerror(errno));
  50 }
  51
  52 static void
  53 handle_reload_event(void)
  54 {
  55         g_debug("got SIGHUP, reopening log files");
  56         cycle_log_files();
  57 }
  58
  59 #endif
  60
  61 void initSigHandlers(void)
  62 {
  63 #ifndef WIN32
  64         struct sigaction sa;
  65
  66         sa.sa_flags = 0;
  67         sigemptyset(&sa.sa_mask);
  68         sa.sa_handler = SIG_IGN;
  69         while (sigaction(SIGPIPE, &sa, NULL) < 0 && errno == EINTR) ;
  70
  71         sa.sa_handler = exit_signal_handler;
  72         x_sigaction(SIGINT, &sa);
  73         x_sigaction(SIGTERM, &sa);
  74
  75         event_pipe_register(PIPE_EVENT_RELOAD, handle_reload_event);
  76         sa.sa_handler = reload_signal_handler;
  77         x_sigaction(SIGHUP, &sa);
  78 #endif
  79 }