// SPDX-License-Identifier: MIT
// Author: Giovanni Santini
// Github: @San7o

#define _POSIX_SOURCE
#include <signal.h>
#include <stddef.h>
#include <stdio.h>

void sig_shutdown_handler(int signum)
{
  (void) signum;

  // ...

  return;
}

// Setup SIGINT, SIGTERM and SIGQUIT
int set_signals(void)
{
  struct sigaction act;
  act.sa_handler = sig_shutdown_handler;
  act.sa_flags = 0;
  sigemptyset(&act.sa_mask);
  if (sigaction(SIGINT, &act, NULL) == -1)  // Ctrl+C
  {
    perror("Error setting SIGINT");
    return 1;
  }
  if (sigaction(SIGTERM, &act, NULL) == -1) // hard shutdown
  {
    perror("Error setting SIGTERM");
    return 1;
  }
  if (sigaction(SIGQUIT, &act, NULL) == -1) // hard shutdown
  {
    perror("Error setting SIGQUIT");
    return 1;
  }
  return 0;
}