Function wait_status_code

daemonize.c:123–149

blockingly waits on the pipe * until a child sends a status code */

/* blockingly waits on the pipe
 * until a child sends a status code */
static int wait_status_code(char *code)
{
	int rc;

	if (status_pipe[0] == -1) {
		LM_DBG("invalid read pipe\n");
		goto error;
	}

retry:
	rc = read(status_pipe[0], code, 1);
	if (rc < 0) {
		if (errno == EINTR)
			goto retry;

		LM_ERR("read(1) failed (%d): %d, %s\n", rc, errno, strerror(errno));
	} else {
		LM_DBG("read code %d (%d byte)\n", *code, rc);
	}

	if (rc == 1)
		return 0;

error:
	*code = -1;
	return -1;
}

int wait_for_one_child(void)
{