/* $Id: dnonblock.c 101 2005-11-18 20:39:12Z lennart $ *//* * This file is part of libdaemon. * * libdaemon is free software; you can redistribute it and/or modify * it under the terms of the GNU Lesser General Public License as * published by the Free Software Foundation; either version 2.1 of * the License, or (at your option) any later version. * * libdaemon is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with libdaemon; if not, write to the Free Software * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA * 02110-1301 USA */#ifdef HAVE_CONFIG_H#include <config.h>#endif#include <fcntl.h>#include "dnonblock.h"int daemon_nonblock(int fd, int b) {    int a;    if ((a = fcntl(fd, F_GETFL)) < 0)        return -1;    if (b)        a |= O_NDELAY;    else        a &= ~O_NDELAY;    if (fcntl(fd, F_SETFL, a) < 0)        return -1;    return 0;}