/*

    Task Spooler - a task queue system for the unix user

    Copyright (C) 2007  Lluís Batlle i Rossell

    Please find the license in the provided COPYING file.

*/

#include <signal.h>

#include <stdio.h>

#include <stdlib.h> /* for NULL */

#include "main.h"

/* Some externs refer to this variable */

static sigset_t normal_sigmask;

/* as extern in execute.c */

int signals_child_pid; /* 0, not set. otherwise, set. */

void ignore_sigpipe()

{

    sigset_t set;

    sigemptyset(&set);

    sigaddset(&set, SIGPIPE);

    sigprocmask(SIG_BLOCK, &set, &normal_sigmask);

}

void restore_sigmask()

{

    sigprocmask(SIG_SETMASK, &normal_sigmask, NULL);

}

void sigint_handler(int s)

{

    if (signals_child_pid)

    {

        kill(signals_child_pid, SIGINT);

    } else

    {

        /* ts client killed by SIGINT */

        exit(1);

    }

}

void block_sigint()

{

    sigset_t set;

    sigemptyset(&set);

    sigaddset(&set, SIGINT);

    /* ignore_sigpipe() will always be called first, and

     * only that sets the normal_sigmask. */

    sigprocmask(SIG_BLOCK, &set, 0);

}

void unblock_sigint_and_install_handler()

{

    sigset_t set;

    struct sigaction act;

    /* Install the handler */

    act.sa_handler = sigint_handler;

    sigemptyset(&act.sa_mask);

    act.sa_flags = 0;

    sigaction(SIGINT, &act, 0);

    /* Unblock the signal */

    sigemptyset(&set);

    sigaddset(&set, SIGINT);

    /* ignore_sigpipe() will always be called first, and

     * only that sets the normal_sigmask. */

    sigprocmask(SIG_UNBLOCK, &set, 0);

}