external/bsd/dhcp/dist/includes/osdep.h

   1 /*      $NetBSD: osdep.h,v 1.1.1.3 2014/07/12 11:57:56 spz Exp $        */
   2 /* osdep.h
   3
   4    Operating system dependencies... */
   5
   6 /*
   7  * Copyright (c) 2004-2005,2007-2010,2014 by Internet Systems Consortium,
   8  *                                        Inc. ("ISC")
   9  * Copyright (c) 1996-2003 by Internet Software Consortium
  10  *
  11  * Permission to use, copy, modify, and distribute this software for any
  12  * purpose with or without fee is hereby granted, provided that the above
  13  * copyright notice and this permission notice appear in all copies.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES
  16  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  17  * MERCHANTABILITY AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR
  18  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  19  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  20  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
  21  * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  22  *
  23  *   Internet Systems Consortium, Inc.
  24  *   950 Charter Street
  25  *   Redwood City, CA 94063
  26  *   <info@isc.org>
  27  *   https://www.isc.org/
  28  *
  29  */
  30
  31 #if !defined (__ISC_DHCP_OSDEP_H__)
  32 #define __ISC_DHCP_OSDEP_H__
  33
  34 #include "site.h"
  35
  36 #include "config.h"
  37
  38 #include <inttypes.h>
  39
  40 #ifndef LITTLE_ENDIAN
  41 #define LITTLE_ENDIAN 1234
  42 #endif /* LITTLE_ENDIAN */
  43
  44 #ifndef BIG_ENDIAN
  45 #define BIG_ENDIAN 4321
  46 #endif /* BIG_ENDIAN */
  47
  48 #ifndef BYTE_ORDER
  49 #define BYTE_ORDER DHCP_BYTE_ORDER
  50 #endif /* BYTE_ORDER */
  51
  52 /* Porting::
  53
  54    If you add a new network API, you must add a check for it below: */
  55
  56 #if !defined (USE_SOCKETS) && \
  57     !defined (USE_SOCKET_SEND) && \
  58     !defined (USE_SOCKET_RECEIVE) && \
  59     !defined (USE_RAW_SOCKETS) && \
  60     !defined (USE_RAW_SEND) && \
  61     !defined (USE_SOCKET_RECEIVE) && \
  62     !defined (USE_BPF) && \
  63     !defined (USE_BPF_SEND) && \
  64     !defined (USE_BPF_RECEIVE) && \
  65     !defined (USE_LPF) && \
  66     !defined (USE_LPF_SEND) && \
  67     !defined (USE_LPF_RECEIVE) && \
  68     !defined (USE_NIT) && \
  69     !defined (USE_NIT_SEND) && \
  70     !defined (USE_NIT_RECEIVE) && \
  71     !defined (USE_DLPI_SEND) && \
  72     !defined (USE_DLPI_RECEIVE)
  73 /* Determine default socket API to USE. */
  74 # if defined(HAVE_BPF)
  75 #  define USE_BPF 1
  76 # elif defined(HAVE_LPF)
  77 #  define USE_LPF 1
  78 # elif defined(HAVE_DLPI)
  79 #  define USE_DLPI 1
  80 # endif
  81 #endif
  82
  83 #if !defined (TIME_MAX)
  84 # define TIME_MAX 2147483647
  85 #endif
  86
  87 /* snprintf/vsnprintf hacks.  for systems with no libc versions only. */
  88 #ifdef NO_SNPRINTF
  89   extern int isc_print_snprintf(char *, size_t, const char *, ...);
  90   extern int isc_print_vsnprintf(char *, size_t, const char *, va_list ap);
  91 # define snprintf  isc_print_snprintf
  92 # define vsnprintf isc_print_vsnprintf
  93 #endif
  94
  95 /* Porting::
  96
  97    If you add a new network API, and have it set up so that it can be
  98    used for sending or receiving, but doesn't have to be used for both,
  99    then set up an ifdef like the ones below: */
 100
 101 #ifdef USE_SOCKETS
 102 #  define USE_SOCKET_SEND
 103 #  define USE_SOCKET_RECEIVE
 104 #  if defined(HAVE_DLPI)
 105 #    define USE_DLPI_HWADDR
 106 #  elif defined(HAVE_LPF)
 107 #    define USE_LPF_HWADDR
 108 #  elif defined(HAVE_BPF)
 109 #    define USE_BPF_HWADDR
 110 #  endif
 111 #endif
 112
 113 #ifdef USE_RAW_SOCKETS
 114 #  define USE_RAW_SEND
 115 #  define USE_SOCKET_RECEIVE
 116 #endif
 117
 118 #ifdef USE_BPF
 119 #  define USE_BPF_SEND
 120 #  define USE_BPF_RECEIVE
 121 #endif
 122
 123 #ifdef USE_LPF
 124 #  define USE_LPF_SEND
 125 #  define USE_LPF_RECEIVE
 126 #endif
 127
 128 #ifdef USE_NIT
 129 #  define USE_NIT_SEND
 130 #  define USE_NIT_RECEIVE
 131 #endif
 132
 133 #ifdef USE_DLPI
 134 #  define USE_DLPI_SEND
 135 #  define USE_DLPI_RECEIVE
 136 #endif
 137
 138 #ifdef USE_UPF
 139 #  define USE_UPF_SEND
 140 #  define USE_UPF_RECEIVE
 141 #endif
 142
 143 /* Porting::
 144
 145    If you add support for sending packets directly out an interface,
 146    and your support does not do ARP or routing, you must use a fallback
 147    mechanism to deal with packets that need to be sent to routers.
 148    Currently, all low-level packet interfaces use BSD sockets as a
 149    fallback. */
 150
 151 #if defined (USE_BPF_SEND) || defined (USE_NIT_SEND) || \
 152     defined (USE_DLPI_SEND) || defined (USE_UPF_SEND) || \
 153     defined (USE_LPF_SEND) || \
 154     (defined (USE_SOCKET_SEND) && defined (HAVE_SO_BINDTODEVICE))
 155 #  define USE_SOCKET_FALLBACK
 156 #  define USE_FALLBACK
 157 #endif
 158
 159 /* Porting::
 160
 161    If you add support for sending packets directly out an interface
 162    and need to be able to assemble packets, add the USE_XXX_SEND
 163    definition for your interface to the list tested below. */
 164
 165 #if defined (USE_RAW_SEND) || defined (USE_BPF_SEND) || \
 166                 defined (USE_NIT_SEND) || defined (USE_UPF_SEND) || \
 167                 defined (USE_DLPI_SEND) || defined (USE_LPF_SEND)
 168 #  define PACKET_ASSEMBLY
 169 #endif
 170
 171 /* Porting::
 172
 173    If you add support for receiving packets directly from an interface
 174    and need to be able to decode raw packets, add the USE_XXX_RECEIVE
 175    definition for your interface to the list tested below. */
 176
 177 #if defined (USE_RAW_RECEIVE) || defined (USE_BPF_SEND) || \
 178                 defined (USE_NIT_RECEIVE) || defined (USE_UPF_RECEIVE) || \
 179                 defined (USE_DLPI_RECEIVE) || defined (USE_LPF_RECEIVE)
 180 #  define PACKET_DECODING
 181 #endif
 182
 183 /* If we don't have a DLPI packet filter, we have to filter in userland.
 184    Probably not worth doing, actually. */
 185 #if defined (USE_DLPI_RECEIVE) && !defined (USE_DLPI_PFMOD)
 186 #  define USERLAND_FILTER
 187 #endif
 188
 189 /* jmp_buf is assumed to be a struct unless otherwise defined in the
 190    system header. */
 191 #ifndef jbp_decl
 192 # define jbp_decl(x)    jmp_buf *x
 193 #endif
 194 #ifndef jref
 195 # define jref(x)        (&(x))
 196 #endif
 197 #ifndef jdref
 198 # define jdref(x)       (*(x))
 199 #endif
 200 #ifndef jrefproto
 201 # define jrefproto      jmp_buf *
 202 #endif
 203
 204 #ifndef BPF_FORMAT
 205 # define BPF_FORMAT "/dev/bpf%d"
 206 #endif
 207
 208 #if defined (F_SETFD) && !defined (HAVE_SETFD)
 209 # define HAVE_SETFD
 210 #endif
 211
 212 #if defined (IFF_POINTOPOINT) && !defined (HAVE_IFF_POINTOPOINT)
 213 # define HAVE_IFF_POINTOPOINT
 214 #endif
 215
 216 #if defined (AF_LINK) && !defined (HAVE_AF_LINK)
 217 # define HAVE_AF_LINK
 218 #endif
 219
 220 #if defined (ARPHRD_TUNNEL) && !defined (HAVE_ARPHRD_TUNNEL)
 221 # define HAVE_ARPHRD_TUNNEL
 222 #endif
 223
 224 #if defined (ARPHRD_LOOPBACK) && !defined (HAVE_ARPHRD_LOOPBACK)
 225 # define HAVE_ARPHRD_LOOPBACK
 226 #endif
 227
 228 #if defined (ARPHRD_ROSE) && !defined (HAVE_ARPHRD_ROSE)
 229 # define HAVE_ARPHRD_ROSE
 230 #endif
 231
 232 #if defined (ARPHRD_IRDA) && !defined (HAVE_ARPHRD_IRDA)
 233 # define HAVE_ARPHRD_IRDA
 234 #endif
 235
 236 #if defined (ARPHRD_SIT) && !defined (HAVE_ARPHRD_SIT)
 237 # define HAVE_ARPHRD_SIT
 238 #endif
 239
 240 #if defined (ARPHRD_IEEE1394) & !defined (HAVE_ARPHRD_IEEE1394)
 241 # define HAVE_ARPHRD_IEEE1394
 242 #endif
 243
 244 #if defined (ARPHRD_IEEE802) && !defined (HAVE_ARPHRD_IEEE802)
 245 # define HAVE_ARPHRD_IEEE802
 246 #endif
 247
 248 #if defined (ARPHRD_IEEE802_TR) && !defined (HAVE_ARPHRD_IEEE802_TR)
 249 # define HAVE_ARPHRD_IEEE802_TR
 250 #endif
 251
 252 #if defined (ARPHRD_FDDI) && !defined (HAVE_ARPHRD_FDDI)
 253 # define HAVE_ARPHRD_FDDI
 254 #endif
 255
 256 #if defined (ARPHRD_AX25) && !defined (HAVE_ARPHRD_AX25)
 257 # define HAVE_ARPHRD_AX25
 258 #endif
 259
 260 #if defined (ARPHRD_NETROM) && !defined (HAVE_ARPHRD_NETROM)
 261 # define HAVE_ARPHRD_NETROM
 262 #endif
 263
 264 #if defined (ARPHRD_METRICOM) && !defined (HAVE_ARPHRD_METRICOM)
 265 # define HAVE_ARPHRD_METRICOM
 266 #endif
 267
 268 #if defined (SO_BINDTODEVICE) && !defined (HAVE_SO_BINDTODEVICE)
 269 # define HAVE_SO_BINDTODEVICE
 270 #endif
 271
 272 #if defined (AF_LINK) && !defined (HAVE_AF_LINK)
 273 # define HAVE_AF_LINK
 274 #endif
 275
 276 /* Linux needs to define SHUT_* in /usr/include/sys/socket.h someday... */
 277 #if !defined (SHUT_RD)
 278 # define SHUT_RD 0
 279 #endif
 280
 281 #if !defined (SOCKLEN_T)
 282 # define SOCKLEN_T socklen_t
 283 #elif defined(_AIX)
 284 #undef SOCKLEN_T
 285 #define SOCKLEN_T socklen_t
 286 #endif
 287
 288 #if !defined (STDERR_FILENO)
 289 # define STDERR_FILENO 2
 290 #endif
 291
 292 #endif /* __ISC_DHCP_OSDEP_H__ */