sysdeps/unix/sysv/linux/socketbits.h

   1 /* System-specific socket constants and types.  Linux version.
   2    Copyright (C) 1991, 92, 94, 95, 96, 97 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Library General Public License as
   7    published by the Free Software Foundation; either version 2 of the
   8    License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Library General Public License for more details.
  14
  15    You should have received a copy of the GNU Library General Public
  16    License along with the GNU C Library; see the file COPYING.LIB.  If not,
  17    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  18    Boston, MA 02111-1307, USA.  */
  19
  20 #ifndef _SOCKETBITS_H
  21
  22 #define _SOCKETBITS_H   1
  23 #include <features.h>
  24
  25 #define __need_size_t
  26 #include <stddef.h>
  27
  28
  29 __BEGIN_DECLS
  30
  31 /* Types of sockets.  */
  32 enum __socket_type
  33 {
  34   SOCK_STREAM = 1,              /* Sequenced, reliable, connection-based
  35                                    byte streams.  */
  36   SOCK_DGRAM = 2,               /* Connectionless, unreliable datagrams
  37                                    of fixed maximum length.  */
  38   SOCK_RAW = 3,                 /* Raw protocol interface.  */
  39   SOCK_RDM = 4,                 /* Reliably-delivered messages.  */
  40   SOCK_SEQPACKET = 5,           /* Sequenced, reliable, connection-based,
  41                                    datagrams of fixed maximum length.  */
  42   SOCK_PACKET = 10              /* Linux specific way of getting packets
  43                                    at the dev level.  For writing rarp and
  44                                    other similar things on the user level. */
  45 };
  46
  47 /* Protocol families.  */
  48 #define PF_UNSPEC       0       /* Unspecified.  */
  49 #define PF_LOCAL        1       /* Local to host (pipes and file-domain).  */
  50 #define PF_UNIX         PF_LOCAL /* Old BSD name for PF_LOCAL.  */
  51 #define PF_INET         2       /* IP protocol family.  */
  52 #define PF_AX25         3       /* Amateur Radio AX.25.  */
  53 #define PF_IPX          4       /* Novell Internet Protocol.  */
  54 #define PF_APPLETALK    5       /* Don't use this.  */
  55 #define PF_NETROM       6       /* Amateur radio NetROM.  */
  56 #define PF_BRIDGE       7       /* Multiprotocol bridge.  */
  57 #define PF_AAL5         8       /* Reserved for Werner's ATM.  */
  58 #define PF_X25          9       /* Reserved for X.25 project.  */
  59 #define PF_INET6        10      /* IP version 6.  */
  60 #define PF_MAX          12      /* For now.. */
  61
  62 /* Address families.  */
  63 #define AF_UNSPEC       PF_UNSPEC
  64 #define AF_LOCAL        PF_LOCAL
  65 #define AF_UNIX         PF_UNIX
  66 #define AF_INET         PF_INET
  67 #define AF_AX25         PF_AX25
  68 #define AF_IPX          PF_IPX
  69 #define AF_APPLETALK    PF_APPLETALK
  70 #define AF_NETROM       PF_NETROM
  71 #define AF_BRIDGE       PF_BRIDGE
  72 #define AF_AAL5         PF_AAL5
  73 #define AF_X25          PF_X25
  74 #define AF_INET6        PF_INET6
  75 #define AF_MAX          PF_MAX
  76
  77
  78
  79 /* Maximum queue length specifiable by listen.  */
  80 #define SOMAXCONN       128
  81
  82 /* Get the definition of the macro to define the common sockaddr members.  */
  83 #include <sockaddrcom.h>
  84
  85 /* Structure describing a generic socket address.  */
  86 struct sockaddr
  87   {
  88     __SOCKADDR_COMMON (sa_);    /* Common data: address family and length.  */
  89     char sa_data[14];           /* Address data.  */
  90   };
  91
  92
  93 /* Bits in the FLAGS argument to `send', `recv', et al.  */
  94 enum
  95   {
  96     MSG_OOB             = 0x01, /* Process out-of-band data.  */
  97     MSG_PEEK            = 0x02, /* Peek at incoming messages.  */
  98     MSG_DONTROUTE       = 0x04, /* Don't use local routing.  */
  99     MSG_CTRUNC          = 0x08, /* Control data lost before delivery.  */
 100     MSG_PROXY           = 0x10  /* Supply or ask second address.  */
 101   };
 102
 103
 104 /* Structure describing messages sent by
 105    `sendmsg' and received by `recvmsg'.  */
 106 struct msghdr
 107   {
 108     __ptr_t msg_name;           /* Address to send to/receive from.  */
 109     int msg_namelen;            /* Length of address data.  */
 110     /* XXX Should be type `size_t' according to POSIX.1g.  */
 111
 112     struct iovec *msg_iov;      /* Vector of data to send/receive into.  */
 113     int msg_iovlen;             /* Number of elements in the vector.  */
 114     /* XXX Should be type `size_t' according to POSIX.1g.  */
 115
 116     __ptr_t msg_control;        /* Ancillary data (eg BSD filedesc passing). */
 117     int msg_controllen;         /* Ancillary data buffer length.  */
 118     /* XXX Should be type `size_t' according to POSIX.1g.  */
 119     int msg_flags;              /* Flags on received message.  */
 120   };
 121
 122
 123 /* Get socket manipulation related informations from kernel headers.  */
 124 #include <asm/socket.h>
 125
 126
 127 /* Structure used to manipulate the SO_LINGER option.  */
 128 struct linger
 129   {
 130     int l_onoff;                /* Nonzero to linger on close.  */
 131     int l_linger;               /* Time to linger.  */
 132   };
 133
 134 __END_DECLS
 135
 136 #endif /* socketbits.h */