Archipelago » qemu

/*

 * os-posix.c

 *

 * Copyright (c) 2003-2008 Fabrice Bellard

 * Copyright (c) 2010 Red Hat, Inc.

 *

 * Permission is hereby granted, free of charge, to any person obtaining a copy

 * of this software and associated documentation files (the "Software"), to deal

 * in the Software without restriction, including without limitation the rights

 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell

 * copies of the Software, and to permit persons to whom the Software is

 * furnished to do so, subject to the following conditions:

 *

 * The above copyright notice and this permission notice shall be included in

 * all copies or substantial portions of the Software.

 *

 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL

 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER

 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,

 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN

 * THE SOFTWARE.

 */

#include <unistd.h>

#include <fcntl.h>

#include <signal.h>

#include <sys/types.h>

#include <sys/wait.h>

/* Needed early for CONFIG_BSD etc. */

#include "config-host.h"

#include "sysemu.h"

void os_setup_early_signal_handling(void)

{

    struct sigaction act;

    sigfillset(&act.sa_mask);

    act.sa_flags = 0;

    act.sa_handler = SIG_IGN;

    sigaction(SIGPIPE, &act, NULL);

}

static void termsig_handler(int signal)

{

    qemu_system_shutdown_request();

}

static void sigchld_handler(int signal)

{

    waitpid(-1, NULL, WNOHANG);

}

void os_setup_signal_handling(void)

{

    struct sigaction act;

    memset(&act, 0, sizeof(act));

    act.sa_handler = termsig_handler;

    sigaction(SIGINT,  &act, NULL);

    sigaction(SIGHUP,  &act, NULL);

    sigaction(SIGTERM, &act, NULL);

    act.sa_handler = sigchld_handler;

    act.sa_flags = SA_NOCLDSTOP;

    sigaction(SIGCHLD, &act, NULL);

}