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[thirdparty/dhcp.git] / includes / osdep.h

/* osdep.h

   Operating system dependencies... */

/*
 * Copyright (c) 1996-1999 Internet Software Consortium.
 * Use is subject to license terms which appear in the file named
 * ISC-LICENSE that should have accompanied this file when you
 * received it.   If a file named ISC-LICENSE did not accompany this
 * file, or you are not sure the one you have is correct, you may
 * obtain an applicable copy of the license at:
 *
 *             http://www.isc.org/isc-license-1.0.html. 
 *
 * This file is part of the ISC DHCP distribution.   The documentation
 * associated with this file is listed in the file DOCUMENTATION,
 * included in the top-level directory of this release.
 *
 * Support and other services are available for ISC products - see
 * http://www.isc.org for more information.
 */

#include "site.h"

/* Porting::

   If you add a new network API, you must add a check for it below: */

#if !defined (USE_SOCKETS) && \
    !defined (USE_SOCKET_SEND) && \
    !defined (USE_SOCKET_RECEIVE) && \
    !defined (USE_RAW_SOCKETS) && \
    !defined (USE_RAW_SEND) && \
    !defined (USE_SOCKET_RECEIVE) && \
    !defined (USE_BPF) && \
    !defined (USE_BPF_SEND) && \
    !defined (USE_BPF_RECEIVE) && \
    !defined (USE_LPF) && \
    !defined (USE_LPF_SEND) && \
    !defined (USE_LPF_RECEIVE) && \
    !defined (USE_NIT) && \
    !defined (USE_NIT_SEND) && \
    !defined (USE_NIT_RECEIVE) && \
    !defined (USR_DLPI_SEND) && \
    !defined (USE_DLPI_RECEIVE)
#  define USE_DEFAULT_NETWORK
#endif

#if !defined (TIME_MAX)
# define TIME_MAX 2147483647
#endif

/* Porting::

   If you add a new system configuration file, include it here: */

#if defined (sun)
# if defined (__svr4__) || defined (__SVR4)
#  include "cf/sunos5-5.h"
# else
#  include "cf/sunos4.h"
# endif
#endif

#ifdef bsdi
#  include "cf/bsdos.h"
#endif

#ifdef __NetBSD__
#  include "cf/netbsd.h"
#endif

#ifdef __FreeBSD__
#  include "cf/freebsd.h"
#endif

#if defined (__osf__) && defined (__alpha)
#  include "cf/alphaosf.h"
#endif

#ifdef ultrix
#  include "cf/ultrix.h"
#endif

#ifdef linux
#  include "cf/linux.h"
#endif

#ifdef SCO
#  include "cf/sco.h"
#endif

#ifdef hpux
#  include "cf/hpux.h"
#endif

#ifdef __QNX__
#  include "cf/qnx.h"
#endif

#ifdef __CYGWIN32__
#  include "cf/cygwin32.h"
#endif

#ifdef NeXT
# ifdef __APPLE__
#  include "cf/rhapsody.h"
# else
#  include "cf/nextstep.h"
# endif
#endif

/* Porting::

   If you add a new network API, and have it set up so that it can be
   used for sending or receiving, but doesn't have to be used for both,
   then set up an ifdef like the ones below: */

#ifdef USE_SOCKETS
#  define USE_SOCKET_SEND
#  define USE_SOCKET_RECEIVE
#endif

#ifdef USE_RAW_SOCKETS
#  define USE_RAW_SEND
#  define USE_SOCKET_RECEIVE
#endif

#ifdef USE_BPF
#  define USE_BPF_SEND
#  define USE_BPF_RECEIVE
#endif

#ifdef USE_LPF
#  define USE_LPF_SEND
#  define USE_LPF_RECEIVE
#endif

#ifdef USE_NIT
#  define USE_NIT_SEND
#  define USE_NIT_RECEIVE
#endif

#ifdef USE_DLPI
#  define USE_DLPI_SEND
#  define USE_DLPI_RECEIVE
#endif

#ifdef USE_UPF
#  define USE_UPF_SEND
#  define USE_UPF_RECEIVE
#endif

/* Porting::

   If you add support for sending packets directly out an interface,
   and your support does not do ARP or routing, you must use a fallback
   mechanism to deal with packets that need to be sent to routers.
   Currently, all low-level packet interfaces use BSD sockets as a
   fallback. */

#if defined (USE_BPF_SEND) || defined (USE_NIT_SEND) || \
    defined (USE_DLPI_SEND) || defined (USE_UPF_SEND) || defined (USE_LPF_SEND)
#  define USE_SOCKET_FALLBACK
#  define USE_FALLBACK
#endif

/* Porting::

   If you add support for sending packets directly out an interface
   and need to be able to assemble packets, add the USE_XXX_SEND
   definition for your interface to the list tested below. */

#if defined (USE_RAW_SEND) || defined (USE_BPF_SEND) || \
		defined (USE_NIT_SEND) || defined (USE_UPF_SEND) || \
		defined (USE_DLPI_SEND) || defined (USE_LPF_SEND)
#  define PACKET_ASSEMBLY
#endif

/* Porting::

   If you add support for receiving packets directly from an interface
   and need to be able to decode raw packets, add the USE_XXX_RECEIVE
   definition for your interface to the list tested below. */

#if defined (USE_RAW_RECEIVE) || defined (USE_BPF_SEND) || \
		defined (USE_NIT_RECEIVE) || defined (USE_UPF_RECEIVE) || \
		defined (USE_DLPI_RECEIVE)  || defined (USE_LPF_RECEIVE)
#  define PACKET_DECODING
#endif

/* If we don't have a DLPI packet filter, we have to filter in userland.
   Probably not worth doing, actually. */
#if defined (USE_DLPI_RECEIVE) && !defined (USE_DLPI_PFMOD)
#  define USERLAND_FILTER
#endif

/* jmp_buf is assumed to be a struct unless otherwise defined in the
   system header. */
#ifndef jbp_decl
# define jbp_decl(x)	jmp_buf *x
#endif
#ifndef jref
# define jref(x)	(&(x))
#endif
#ifndef jdref
# define jdref(x)	(*(x))
#endif
#ifndef jrefproto
# define jrefproto	jmp_buf *
#endif

#ifndef BPF_FORMAT
# define BPF_FORMAT "/dev/bpf%d"
#endif

#if defined (IFF_POINTOPOINT) && !defined (HAVE_IFF_POINTOPOINT)
# define HAVE_IFF_POINTOPOINT
#endif

#if defined (AF_LINK) && !defined (HAVE_AF_LINK)
# define HAVE_AF_LINK
#endif

#if defined (ARPHRD_TUNNEL) && !defined (HAVE_ARPHRD_TUNNEL)
# define HAVE_ARPHRD_TUNNEL
#endif

#if defined (ARPHRD_LOOPBACK) && !defined (HAVE_ARPHRD_LOOPBACK)
# define HAVE_ARPHRD_LOOPBACK
#endif

#if defined (ARPHRD_METRICOM) && !defined (HAVE_ARPHRD_METRICOM)
# define HAVE_ARPHRD_METRICOM
#endif

#if defined (SO_BINDTODEVICE) && !defined (HAVE_SO_BINDTODEVICE)
# define HAVE_SO_BINDTODEVICE
#endif

#if defined (SIOCGIFHWADDR) && !defined (HAVE_SIOCGIFHWADDR)
# define HAVE_SIOCGIFHWADDR
#endif

#if defined (AF_LINK) && !defined (HAVE_AF_LINK)
# define HAVE_AF_LINK
#endif