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.
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.
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.
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. */
21 # error "Never include <bits/socket.h> directly; use <sys/socket.h> instead."
28 #include <sys/types.h>
30 /* Type for length arguments in socket calls. */
31 typedef unsigned int socklen_t;
33 /* Types of sockets. */
36 SOCK_STREAM = 1, /* Sequenced, reliable, connection-based
38 #define SOCK_STREAM SOCK_STREAM
39 SOCK_DGRAM = 2, /* Connectionless, unreliable datagrams
40 of fixed maximum length. */
41 #define SOCK_DGRAM SOCK_DGRAM
42 SOCK_RAW = 3, /* Raw protocol interface. */
43 #define SOCK_RAW SOCK_RAW
44 SOCK_RDM = 4, /* Reliably-delivered messages. */
45 #define SOCK_RDM SOCK_RDM
46 SOCK_SEQPACKET = 5, /* Sequenced, reliable, connection-based,
47 datagrams of fixed maximum length. */
48 #define SOCK_SEQPACKET SOCK_SEQPACKET
49 SOCK_PACKET = 10 /* Linux specific way of getting packets
50 at the dev level. For writing rarp and
51 other similar things on the user level. */
52 #define SOCK_PACKET SOCK_PACKET
55 /* Protocol families. */
56 #define PF_UNSPEC 0 /* Unspecified. */
57 #define PF_LOCAL 1 /* Local to host (pipes and file-domain). */
58 #define PF_UNIX PF_LOCAL /* Old BSD name for PF_LOCAL. */
59 #define PF_FILE PF_LOCAL /* POSIX name for PF_LOCAL. */
60 #define PF_INET 2 /* IP protocol family. */
61 #define PF_AX25 3 /* Amateur Radio AX.25. */
62 #define PF_IPX 4 /* Novell Internet Protocol. */
63 #define PF_APPLETALK 5 /* Don't use this. */
64 #define PF_NETROM 6 /* Amateur radio NetROM. */
65 #define PF_BRIDGE 7 /* Multiprotocol bridge. */
66 #define PF_AAL5 8 /* Reserved for Werner's ATM. */
67 #define PF_X25 9 /* Reserved for X.25 project. */
68 #define PF_INET6 10 /* IP version 6. */
69 #define PF_MAX 12 /* For now.. */
71 /* Address families. */
72 #define AF_UNSPEC PF_UNSPEC
73 #define AF_LOCAL PF_LOCAL
74 #define AF_UNIX PF_UNIX
75 #define AF_FILE PF_FILE
76 #define AF_INET PF_INET
77 #define AF_AX25 PF_AX25
79 #define AF_APPLETALK PF_APPLETALK
80 #define AF_NETROM PF_NETROM
81 #define AF_BRIDGE PF_BRIDGE
82 #define AF_AAL5 PF_AAL5
84 #define AF_INET6 PF_INET6
87 /* Socket level values. Others are defined in the appropriate headers.
89 XXX These definitions also should go into the appropriate headers as
90 far as they are available. */
96 #define SOL_NETROM 259
98 #define SOL_DECNET 261
101 /* Maximum queue length specifiable by listen. */
102 #define SOMAXCONN 128
104 /* Get the definition of the macro to define the common sockaddr members. */
105 #include <bits/sockaddr.h>
107 /* Structure describing a generic socket address. */
110 __SOCKADDR_COMMON (sa_); /* Common data: address family and length. */
111 char sa_data[14]; /* Address data. */
115 /* Bits in the FLAGS argument to `send', `recv', et al. */
118 MSG_OOB = 0x01, /* Process out-of-band data. */
119 MSG_PEEK = 0x02, /* Peek at incoming messages. */
120 MSG_DONTROUTE = 0x04, /* Don't use local routing. */
121 MSG_CTRUNC = 0x08, /* Control data lost before delivery. */
122 MSG_PROXY = 0x10 /* Supply or ask second address. */
126 /* Structure describing messages sent by
127 `sendmsg' and received by `recvmsg'. */
130 __ptr_t msg_name; /* Address to send to/receive from. */
131 socklen_t msg_namelen; /* Length of address data. */
133 struct iovec *msg_iov; /* Vector of data to send/receive into. */
134 size_t msg_iovlen; /* Number of elements in the vector. */
136 __ptr_t msg_control; /* Ancillary data (eg BSD filedesc passing). */
137 size_t msg_controllen; /* Ancillary data buffer length. */
139 int msg_flags; /* Flags on received message. */
142 /* Structure used for storage of ancillary data object information. */
145 size_t cmsg_len; /* Length of data in cmsg_data plus length
146 of cmsghdr structure. */
147 int cmsg_level; /* Originating protocol. */
148 int cmsg_type; /* Protocol specific type. */
149 #if !defined __STRICT_ANSI__ && defined __GNUC__ && __GNUC__ >= 2
150 unsigned char __cmsg_data[0]; /* Ancillary data. */
151 /* XXX Perhaps this should be removed. */
155 /* Ancillary data object manipulation macros. */
156 #if !defined __STRICT_ANSI__ && defined __GNUC__ && __GNUC__ >= 2
157 # define CMSG_DATA(cmsg) ((cmsg)->__cmsg_data)
159 # define CMSG_DATA(cmsg) ((unsigned char *) ((struct cmsghdr *) (cmsg) + 1))
161 #define CMSG_NXTHDR(mhdr, cmsg) __cmsg_nxthdr (mhdr, cmsg)
162 #define CMSG_FIRSTHDR(mhdr) \
163 ((size_t) (mhdr)->msg_controllen >= sizeof (struct cmsghdr) \
164 ? (struct cmsghdr *) (mhdr)->msg_control : (struct cmsghdr *) NULL)
165 #define CMSG_ALIGN(len) (((len) + sizeof (size_t) - 1) \
166 & ~(sizeof (size_t) - 1))
167 #define CMSG_SPACE(len) (CMSG_ALIGN (len) \
168 + CMSG_ALIGN (sizeof (struct cmsghdr)))
169 #define CMSG_LEN(len) (CMSG_ALIGN (sizeof (struct cmsghdr)) + (len))
171 #ifndef _EXTERN_INLINE
172 # define _EXTERN_INLINE extern __inline
174 extern struct cmsghdr *__cmsg_nxthdr __P ((struct msghdr *__mhdr,
175 struct cmsghdr *__cmsg));
176 _EXTERN_INLINE struct cmsghdr *
177 __cmsg_nxthdr (struct msghdr *__mhdr, struct cmsghdr *__cmsg)
181 if ((size_t) __cmsg->cmsg_len < sizeof (struct cmsghdr))
182 /* The kernel header does this so there may be a reason. */
185 __p = (((unsigned char *) __cmsg)
186 + ((__cmsg->cmsg_len + sizeof (long int) - 1) & ~sizeof (long int)));
187 if (__p >= (unsigned char *) __mhdr->msg_control + __mhdr->msg_controllen)
188 /* No more entries. */
190 return (struct cmsghdr *) __p;
193 /* Socket level message types. This must match the definitions in
197 SCM_RIGHTS = 0x01, /* Data array contains access rights. */
198 #define SCM_RIGHTS SCM_RIGHTS
199 __SCM_CREDENTIALS = 0x02, /* Data array is `struct ucred'. */
200 __SCM_CONNECT = 0x03 /* Data array is `struct scm_connect'. */
204 /* Get socket manipulation related informations from kernel headers. */
205 #include <asm/socket.h>
208 /* Structure used to manipulate the SO_LINGER option. */
211 int l_onoff; /* Nonzero to linger on close. */
212 int l_linger; /* Time to linger. */