1/* System-specific socket constants and types. Linux version. 2 Copyright (C) 1991, 92, 94, 95, 96, 97, 98 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#define __need_NULL 27#include <stddef.h> 28 29 30__BEGIN_DECLS 31 32/* Type for length arguments in socket calls. */ 33#ifndef __socklen_t_defined 34typedef unsigned int socklen_t; 35# define __socklen_t_defined 36#endif 37 38/* Types of sockets. */ 39enum __socket_type 40{ 41 SOCK_STREAM = 1, /* Sequenced, reliable, connection-based 42 byte streams. */ 43#define SOCK_STREAM SOCK_STREAM 44 SOCK_DGRAM = 2, /* Connectionless, unreliable datagrams 45 of fixed maximum length. */ 46#define SOCK_DGRAM SOCK_DGRAM 47 SOCK_RAW = 3, /* Raw protocol interface. */ 48#define SOCK_RAW SOCK_RAW 49 SOCK_RDM = 4, /* Reliably-delivered messages. */ 50#define SOCK_RDM SOCK_RDM 51 SOCK_SEQPACKET = 5, /* Sequenced, reliable, connection-based, 52 datagrams of fixed maximum length. */ 53#define SOCK_SEQPACKET SOCK_SEQPACKET 54 SOCK_PACKET = 10 /* Linux specific way of getting packets 55 at the dev level. For writing rarp and 56 other similar things on the user level. */ 57#define SOCK_PACKET SOCK_PACKET 58}; 59 60/* Protocol families. */ 61#define PF_UNSPEC 0 /* Unspecified. */ 62#define PF_LOCAL 1 /* Local to host (pipes and file-domain). */ 63#define PF_UNIX PF_LOCAL /* Old BSD name for PF_LOCAL. */ 64#define PF_FILE PF_LOCAL /* POSIX name for PF_LOCAL. */ 65#define PF_INET 2 /* IP protocol family. */ 66#define PF_AX25 3 /* Amateur Radio AX.25. */ 67#define PF_IPX 4 /* Novell Internet Protocol. */ 68#define PF_APPLETALK 5 /* Don't use this. */ 69#define PF_NETROM 6 /* Amateur radio NetROM. */ 70#define PF_BRIDGE 7 /* Multiprotocol bridge. */ 71#define PF_AAL5 8 /* Reserved for Werner's ATM. */ 72#define PF_X25 9 /* Reserved for X.25 project. */ 73#define PF_INET6 10 /* IP version 6. */ 74#define PF_ROSE 11 /* Amateur Radio X.25 PLP */ 75#define PF_DECnet 12 /* Reserved for DECnet project */ 76#define PF_NETBEUI 13 /* Reserved for 802.2LLC project*/ 77#define PF_SECURITY 14 /* Security callback pseudo AF */ 78#define PF_KEY 15 /* PF_KEY key management API */ 79#define PF_NETLINK 16 80#define PF_ROUTE PF_NETLINK /* Alias to emulate 4.4BSD */ 81#define PF_PACKET 17 /* Packet family */ 82#define PF_MAX 32 /* For now.. */ 83 84/* Address families. */ 85#define AF_UNSPEC PF_UNSPEC 86#define AF_LOCAL PF_LOCAL 87#define AF_UNIX PF_UNIX 88#define AF_FILE PF_FILE 89#define AF_INET PF_INET 90#define AF_AX25 PF_AX25 91#define AF_IPX PF_IPX 92#define AF_APPLETALK PF_APPLETALK 93#define AF_NETROM PF_NETROM 94#define AF_BRIDGE PF_BRIDGE 95#define AF_AAL5 PF_AAL5 96#define AF_X25 PF_X25 97#define AF_INET6 PF_INET6 98#define AF_ROSE PF_ROSE 99#define AF_DECnet PF_DECnet 100#define AF_NETBEUI PF_NETBEUI 101#define AF_SECURITY PF_SECURITY 102#define pseudo_AF_KEY pseudo_PF_KEY 103#define AF_NETLINK PF_NETLINK 104#define AF_ROUTE PF_ROUTE 105#define AF_PACKET PF_PACKET 106#define AF_MAX PF_MAX 107 108/* Socket level values. Others are defined in the appropriate headers. 109 110 XXX These definitions also should go into the appropriate headers as 111 far as they are available. */ 112#define SOL_IPV6 41 113#define SOL_ICMPV6 58 114#define SOL_RAW 255 115#define SOL_AX25 257 116#define SOL_ATALK 258 117#define SOL_NETROM 259 118#define SOL_ROSE 260 119#define SOL_DECNET 261 120#define SOL_X25 262 121 122/* Maximum queue length specifiable by listen. */ 123#define SOMAXCONN 128 124 125/* Get the definition of the macro to define the common sockaddr members. */ 126#if __GLIBC_MINOR__ >= 1 127#include <bits/sockaddr.h> 128#else 129#include <sockaddrcom.h> 130#endif 131 132/* Structure describing a generic socket address. */ 133struct sockaddr 134 { 135 __SOCKADDR_COMMON (sa_); /* Common data: address family and length. */ 136 char sa_data[14]; /* Address data. */ 137 }; 138 139 140/* Bits in the FLAGS argument to `send', `recv', et al. */ 141enum 142 { 143 MSG_OOB = 0x01, /* Process out-of-band data. */ 144#define MSG_OOB MSG_OOB 145 MSG_PEEK = 0x02, /* Peek at incoming messages. */ 146#define MSG_PEEK MSG_PEEK 147 MSG_DONTROUTE = 0x04, /* Don't use local routing. */ 148#define MSG_DONTROUTE MSG_DONTROUTE 149 MSG_CTRUNC = 0x08, /* Control data lost before delivery. */ 150#define MSG_CTRUNC MSG_CTRUNC 151 MSG_PROXY = 0x10, /* Supply or ask second address. */ 152#define MSG_PROXY MSG_PROXY 153 MSG_TRUNC = 0x20, 154#define MSG_TRUNC MSG_TRUNC 155 MSG_DONTWAIT = 0x40, 156#define MSG_DONTWAIT MSG_DONTWAIT 157 MSG_WAITALL = 0x100, 158#define MSG_WAITALL MSG_WAITALL 159 MSG_ERRQUEUE = 0x2000, 160#define MSG_ERRQUEUE MSG_ERRQUEUE 161 MSG_NOSIGNAL = 0x4000, 162#define MSG_NOSIGNAL MSG_NOSIGNAL 163 }; 164 165 166/* Structure describing messages sent by 167 `sendmsg' and received by `recvmsg'. */ 168struct msghdr 169 { 170 __ptr_t msg_name; /* Address to send to/receive from. */ 171 socklen_t msg_namelen; /* Length of address data. */ 172 173 struct iovec *msg_iov; /* Vector of data to send/receive into. */ 174 size_t msg_iovlen; /* Number of elements in the vector. */ 175 176 __ptr_t msg_control; /* Ancillary data (eg BSD filedesc passing). */ 177 size_t msg_controllen; /* Ancillary data buffer length. */ 178 179 int msg_flags; /* Flags on received message. */ 180 }; 181 182/* Structure used for storage of ancillary data object information. */ 183struct cmsghdr 184 { 185 size_t cmsg_len; /* Length of data in cmsg_data plus length 186 of cmsghdr structure. */ 187 int cmsg_level; /* Originating protocol. */ 188 int cmsg_type; /* Protocol specific type. */ 189#if !defined __STRICT_ANSI__ && defined __GNUC__ && __GNUC__ >= 2 190 unsigned char __cmsg_data[0]; /* Ancillary data. */ 191#endif 192 }; 193 194/* Ancillary data object manipulation macros. */ 195#if !defined __STRICT_ANSI__ && defined __GNUC__ && __GNUC__ >= 2 196# define CMSG_DATA(cmsg) ((cmsg)->__cmsg_data) 197#else 198# define CMSG_DATA(cmsg) ((unsigned char *) ((struct cmsghdr *) (cmsg) + 1)) 199#endif 200#define CMSG_NXTHDR(mhdr, cmsg) __cmsg_nxthdr (mhdr, cmsg) 201#define CMSG_FIRSTHDR(mhdr) \ 202 ((size_t) (mhdr)->msg_controllen >= sizeof (struct cmsghdr) \ 203 ? (struct cmsghdr *) (mhdr)->msg_control : (struct cmsghdr *) NULL) 204#define CMSG_ALIGN(len) ( ((len)+sizeof(long)-1) & ~(sizeof(long)-1) ) 205#define CMSG_SPACE(len) (CMSG_ALIGN(sizeof(struct cmsghdr)) + CMSG_ALIGN(len)) 206#define CMSG_LEN(len) (CMSG_ALIGN(sizeof(struct cmsghdr)) + (len)) 207 208 209#ifndef _EXTERN_INLINE 210# define _EXTERN_INLINE extern __inline 211#endif 212extern struct cmsghdr *__cmsg_nxthdr __P ((struct msghdr *__mhdr, 213 struct cmsghdr *__cmsg)); 214_EXTERN_INLINE struct cmsghdr * 215__cmsg_nxthdr (struct msghdr *__mhdr, struct cmsghdr *__cmsg) 216{ 217 if ((size_t) __cmsg->cmsg_len < sizeof (struct cmsghdr)) 218 /* The kernel header does this so there may be a reason. */ 219 return NULL; 220 221 __cmsg = (struct cmsghdr *) 222 ((unsigned char *) __cmsg + CMSG_ALIGN(__cmsg->cmsg_len)); 223 224 if ( (unsigned char *) (__cmsg + 1) >= 225 (unsigned char *) __mhdr->msg_control + __mhdr->msg_controllen) 226 /* No more entries. */ 227 return NULL; 228 return __cmsg; 229} 230 231/* Socket level message types. This must match the definitions in 232 <linux/socket.h>. */ 233enum 234 { 235 SCM_RIGHTS = 0x01, /* Data array contains access rights. */ 236#define SCM_RIGHTS SCM_RIGHTS 237 SCM_CREDENTIALS = 0x02, /* Data array is `struct ucred'. */ 238#define SCM_CREDENTIALS SCM_CREDENTIALS 239 }; 240 241 242 243/* Get socket manipulation related informations from kernel headers. */ 244#ifdef THIS_IS_CRAP 245#ifndef _LINUX_TYPES_H 246# define _LINUX_TYPES_H 247#endif 248#endif 249 250#include <asm/socket.h> 251#include <asm/types.h> 252 253struct ucred 254{ 255 __u32 pid; 256 __u32 uid; 257 __u32 gid; 258}; 259 260 261/* Structure used to manipulate the SO_LINGER option. */ 262struct linger 263 { 264 int l_onoff; /* Nonzero to linger on close. */ 265 int l_linger; /* Time to linger. */ 266 }; 267 268__END_DECLS 269 270#endif /* socketbits.h */ 271