Function process_signals

src/ls.c:1543–1581

   immediately change colors after invoking this function.  */

static void
process_signals (void)
{
  while (interrupt_signal || stop_signal_count)
    {
      int sig;
      int stops;
      sigset_t oldset;

      if (used_color)
        restore_default_color ();
      fflush (stdout);

      sigprocmask (SIG_BLOCK, &caught_signals, &oldset);

      /* Reload interrupt_signal and stop_signal_count, in case a new
         signal was handled before sigprocmask took effect.  */
      sig = interrupt_signal;
      stops = stop_signal_count;

      /* SIGTSTP is special, since the application can receive that signal
         more than once.  In this case, don't set the signal handler to the
         default.  Instead, just raise the uncatchable SIGSTOP.  */
      if (stops)
        {
          stop_signal_count = stops - 1;
          sig = SIGSTOP;
        }
      else
        signal (sig, SIG_DFL);

      /* Exit or suspend the program.  */
      raise (sig);
      sigprocmask (SIG_SETMASK, &oldset, NULL);

      /* If execution reaches here, then the program has been
         continued (after being suspended).  */
    }
}

/* Setup signal handlers if INIT is true,
   otherwise restore to the default.  */