new source files to store signal handling routines

2 files changed, 107 insertions, 0 deletions

diff --git a/src/sigs.c b/src/sigs.c
new file mode 100755
index 0000000..a544952
--- /dev/null
+++ b/src/sigs.c
@@ -0,0 +1,75 @@
+/*	$Id: sigs.c,v 1.1 2007/07/23 19:31:12 culot Exp $	*/
+
+/*
+ * Calcurse - text-based organizer
+ * Copyright (c) 2007 Frederic Culot
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ *
+ * Send your feedback or comments to : calcurse@culot.org
+ * Calcurse home page : http://culot.org/calcurse
+ *
+ */
+
+#include <sys/types.h>
+#include <sys/wait.h>
+#include <ncurses.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <signal.h>
+
+#include "i18n.h"
+#include "utils.h"
+#include "wins.h"
+#include "vars.h"
+
+/* 
+ * General signal handling routine.
+ * Catch return values from children (user-defined notification commands).
+ * This is needed to avoid zombie processes running on system.
+ * Also catch CTRL-C (SIGINT) to exit properly.
+ */
+static void
+signal_handler(int sig)
+{
+	switch (sig) {
+	case SIGCHLD:
+		while (waitpid(WAIT_MYPGRP, NULL, WNOHANG) > 0)
+			;
+		break;
+	}
+}
+
+/* Signal handling init. */
+void
+sigs_init(struct sigaction *sa)
+{
+	sa->sa_handler = signal_handler;
+	sa->sa_flags = 0;
+	sigemptyset(&sa->sa_mask);
+	if (sigaction(SIGCHLD, sa, NULL) != 0) {
+		perror("sigaction");
+		exit(EXIT_FAILURE);
+	}
+
+	sa->sa_handler = SIG_IGN; 
+	sa->sa_flags = 0;
+	sigemptyset(&(sa->sa_mask));
+	if (sigaction(SIGINT, sa, NULL) != 0) {
+		perror("sigaction");
+		exit(EXIT_FAILURE);
+	}
+}
diff --git a/src/sigs.h b/src/sigs.h
new file mode 100755
index 0000000..1643567
--- /dev/null
+++ b/src/sigs.h
@@ -0,0 +1,32 @@
+/*	$Id: sigs.h,v 1.1 2007/07/23 19:31:12 culot Exp $	*/
+
+/*
+ * Calcurse - text-based organizer
+ * Copyright (c) 2007 Frederic Culot
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ *
+ * Send your feedback or comments to : calcurse@culot.org
+ * Calcurse home page : http://culot.org/calcurse
+ *
+ */
+
+#ifndef CALCURSE_SIGS_H
+#define CALCURSE_SIGS_H
+
+void	sigs_init(struct sigaction *);
+
+#endif /* CALCURSE_SIGS_H */