Function sig_needs_handling

src/timeout.c:421–434

/* Filter out signals that were ignored.  */

static bool
sig_needs_handling (int sig, int sigterm)
{
  if (sig == SIGALRM || sig == sigterm)
    return true;  /* We can't ignore these.  */

  /* Note background jobs in shells have SIGINT and SIGQUIT
     set to SIG_IGN by default.  I.e., those signals will
     not be propagated through background timeout jobs.  */
  struct sigaction old_sa;
  sigaction (sig, NULL, &old_sa);
  bool ret = old_sa.sa_handler != SIG_IGN;
  return ret;
}

static void
install_cleanup (int sigterm)