Function parse_signal_action_params

src/env.c:555–586

}

static void
parse_signal_action_params (char const *arg, bool set_default)
{
  if (! arg)
    {
      /* Without an argument, reset all signals.
         Some signals cannot be set to ignore or default (e.g., SIGKILL,
         SIGSTOP on most OSes, and SIGCONT on AIX.) - so ignore errors.  */
      for (int i = 1 ; i <= SIGNUM_BOUND; i++)
        signals[i] = set_default ? DEFAULT_NOERR : IGNORE_NOERR;
      return;
    }

  char *optarg_writable = xstrdup (arg);

  char *opt_sig = strtok (optarg_writable, ",");
  while (opt_sig)
    {
      int signum = operand2sig (opt_sig);
      /* operand2sig accepts signal 0 (EXIT) - but we reject it.  */
      if (signum == 0)
        error (0, 0, _("%s: invalid signal"), quote (opt_sig));
      if (signum <= 0)
        usage (exit_failure);

      signals[signum] = set_default ? DEFAULT : IGNORE;

      opt_sig = strtok (NULL, ",");
    }

  free (optarg_writable);
}

static void
reset_signal_handlers (void)