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/* $calcurse: sigs.c,v 1.8 2009/07/05 20:33:23 culot Exp $ */
/*
* Calcurse - text-based organizer
*
* Copyright (c) 2007-2009 Frederic Culot <frederic@culot.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* - Redistributions of source code must retain the above
* copyright notice, this list of conditions and the
* following disclaimer.
*
* - Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the
* following disclaimer in the documentation and/or other
* materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* 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 <signal.h>
#include "i18n.h"
#include "utils.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), and SIGWINCH to resize screen automatically.
*/
static void
signal_handler (int sig)
{
switch (sig)
{
case SIGCHLD:
while (waitpid (WAIT_MYPGRP, NULL, WNOHANG) > 0)
;
break;
case SIGWINCH:
clearok (curscr, TRUE);
(void)ungetch (KEY_RESIZE);
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)
{
ERROR_MSG (_("Error handling SIGCHLD signal"));
exit_calcurse (1);
}
sa->sa_handler = signal_handler;
sa->sa_flags = 0;
sigemptyset (&sa->sa_mask);
if (sigaction (SIGWINCH, sa, NULL) != 0)
{
ERROR_MSG (_("Error handling SIGWINCH signal"));
exit_calcurse (1);
}
sa->sa_handler = SIG_IGN;
sa->sa_flags = 0;
sigemptyset (&(sa->sa_mask));
if (sigaction (SIGINT, sa, NULL) != 0)
{
ERROR_MSG (_("Error handling SIGINT signal"));
exit_calcurse (1);
}
}
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