/* *  OpenVPN -- An application to securely tunnel IP networks *             over a single UDP port, with support for TLS-based *             session authentication and key exchange, *             packet encryption, packet authentication, and *             packet compression. * *  Copyright (C) 2002 James Yonan <jim@yonan.net> * *  This program is free software; you can redistribute it and/or modify *  it under the terms of the GNU General Public License as published by *  the Free Software Foundation; either version 2 of the License, or *  (at your option) any later version. * *  This program 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 General Public License for more details. * *  You should have received a copy of the GNU General Public License *  along with this program (see the file COPYING included with this *  distribution); if not, write to the Free Software Foundation, Inc., *  59 Temple Place, Suite 330, Boston, MA  02111-1307  USA */#ifndef SYSHEAD_H#define SYSHEAD_H#ifdef HAVE_SYS_TYPES_H#include <sys/types.h>#endif#ifdef HAVE_SYS_WAIT_H# include <sys/wait.h>#endif#ifndef WEXITSTATUS# define WEXITSTATUS(stat_val) ((unsigned)(stat_val) >> 8)#endif#ifndef WIFEXITED# define WIFEXITED(stat_val) (((stat_val) & 255) == 0)#endif#ifdef TIME_WITH_SYS_TIME# include <sys/time.h># include <time.h>#else# ifdef HAVE_SYS_TIME_H#  include <sys/time.h># else#  include <time.h># endif#endif#ifdef HAVE_SYS_SOCKET_H#include <sys/socket.h>#endif#ifdef HAVE_SYS_IOCTL_H#include <sys/ioctl.h>#endif#ifdef HAVE_SYS_STAT_H#include <sys/stat.h>#endif#ifdef HAVE_FCNTL_H#include <fcntl.h>#endif#ifdef HAVE_STDLIB_H#include <stdlib.h>#endif#ifdef HAVE_STDINT_H#include <stdint.h>#endif#ifdef HAVE_STDARG_H#include <stdarg.h>#endif#ifdef HAVE_UNISTD_H#include <unistd.h>#endif#ifdef HAVE_SIGNAL_H#include <signal.h>#endif#ifdef HAVE_STDIO_H#include <stdio.h>#endif#ifdef HAVE_CTYPE_H#include <ctype.h>#endif#ifdef HAVE_ERRNO_H#include <errno.h>#endif#ifdef HAVE_SYSLOG_H#include <syslog.h>#endif#ifdef HAVE_PWD_H#include <pwd.h>#endif#ifdef HAVE_GRP_H#include <grp.h>#endif#ifdef HAVE_NETDB_H#include <netdb.h>#endif#ifdef HAVE_NETINET_IN_H#include <netinet/in.h>#endif#ifdef TARGET_SOLARIS#ifdef HAVE_STRINGS_H#include <strings.h>#endif#else#ifdef HAVE_STRING_H#include <string.h>#endif#endif#ifdef HAVE_ARPA_INET_H#ifndef TARGET_OPENBSD#include <arpa/inet.h>#endif#endif#ifdef HAVE_NET_IF_H#include <net/if.h>#endif#ifdef TARGET_LINUX#ifdef HAVE_NETINET_IF_ETHER_H#include <netinet/if_ether.h>#endif#ifdef HAVE_LINUX_IF_TUN_H#include <linux/if_tun.h>#endif#ifdef HAVE_NETINET_IP_H#include <netinet/ip.h>#endif#endif /* TARGET_LINUX */#ifdef TARGET_SOLARIS#ifdef HAVE_STROPTS_H#include <stropts.h>#undef S_ERROR#endif#ifdef HAVE_NET_IF_TUN_H#include <net/if_tun.h>#endif#ifdef HAVE_SYS_SOCKIO_H#include <sys/sockio.h>#endif#ifdef HAVE_NETINET_IN_SYSTM_H#include <netinet/in_systm.h>#endif#ifdef HAVE_NETINET_IP_H#include <netinet/ip.h>#endif#ifdef HAVE_NETINET_TCP_H#include <netinet/tcp.h>#endif#endif /* TARGET_SOLARIS */#ifdef TARGET_OPENBSD#ifdef HAVE_SYS_UIO_H#include <sys/uio.h>#endif#ifdef HAVE_NET_IF_TUN_H#include <net/if_tun.h>#endif#endif /* TARGET_OPENBSD */#ifdef TARGET_FREEBSD#ifdef HAVE_NET_IF_TUN_H#include <net/if_tun.h>#endif#endif /* TARGET_FREEBSD */#ifdef TARGET_NETBSD#ifdef HAVE_NET_IF_TUN_H#include <net/if_tun.h>#endif#endif /* TAGET_NETBSD */#ifdef HAVE_SYS_MMAN_H#ifdef TARGET_DARWIN#define _P1003_1B_VISIBLE#endif /* TARGET_DARWIN */#include <sys/mman.h>#endif#ifdef USE_PTHREAD#include <pthread.h>#endif#endif