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.
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_ROSE 11 /* Amateur Radio X.25 PLP. */
70 #define PF_DECnet 12 /* Reserved for DECnet project. */
71 #define PF_NETBEUI 13 /* Reserved for 802.2LLC project. */
72 #define PF_SECURITY 14 /* Security callback pseudo AF. */
73 #define PF_KEY 15 /* PF_KEY key management API. */
75 #define PF_ROUTE PF_NETLINK /* Alias to emulate 4.4BSD. */
76 #define PF_PACKET 17 /* Packet family. */
77 #define PF_ASH 18 /* Ash. */
78 #define PF_MAX 32 /* For now.. */
80 /* Address families. */
81 #define AF_UNSPEC PF_UNSPEC
82 #define AF_LOCAL PF_LOCAL
83 #define AF_UNIX PF_UNIX
84 #define AF_FILE PF_FILE
85 #define AF_INET PF_INET
86 #define AF_AX25 PF_AX25
88 #define AF_APPLETALK PF_APPLETALK
89 #define AF_NETROM PF_NETROM
90 #define AF_BRIDGE PF_BRIDGE
91 #define AF_AAL5 PF_AAL5
93 #define AF_INET6 PF_INET6
94 #define AF_ROSE PF_ROSE
95 #define AF_DECnet PF_DECnet
96 #define AF_NETBEUI PF_NETBEUI
97 #define AF_SECURITY PF_SECURITY
98 #define pseudo_AF_KEY PF_KEY
99 #define AF_NETLINK PF_NETLINK
100 #define AF_ROUTE PF_ROUTE
101 #define AF_PACKET PF_PACKET
102 #define AF_ASH PF_ASH
103 #define AF_MAX PF_MAX
105 /* Socket level values. Others are defined in the appropriate headers.
107 XXX These definitions also should go into the appropriate headers as
108 far as they are available. */
110 #define SOL_ICMPV6 58
112 #define SOL_DECNET 261
115 /* Maximum queue length specifiable by listen. */
116 #define SOMAXCONN 128
118 /* Get the definition of the macro to define the common sockaddr members. */
119 #include <bits/sockaddr.h>
121 /* Structure describing a generic socket address. */
124 __SOCKADDR_COMMON (sa_); /* Common data: address family and length. */
125 char sa_data[14]; /* Address data. */
129 /* Bits in the FLAGS argument to `send', `recv', et al. */
132 MSG_OOB = 0x01, /* Process out-of-band data. */
133 #define MSG_OOB MSG_OOB
134 MSG_PEEK = 0x02, /* Peek at incoming messages. */
135 #define MSG_PEEK MSG_PEEK
136 MSG_DONTROUTE = 0x04, /* Don't use local routing. */
137 #define MSG_DONTROUTE MSG_DONTROUTE
138 MSG_CTRUNC = 0x08, /* Control data lost before delivery. */
139 #define MSG_CTRUNC MSG_CTRUNC
140 MSG_PROXY = 0x10 /* Supply or ask second address. */
141 #define MSG_PROXY MSG_PROXY
145 /* Structure describing messages sent by
146 `sendmsg' and received by `recvmsg'. */
149 __ptr_t msg_name; /* Address to send to/receive from. */
150 socklen_t msg_namelen; /* Length of address data. */
152 struct iovec *msg_iov; /* Vector of data to send/receive into. */
153 size_t msg_iovlen; /* Number of elements in the vector. */
155 __ptr_t msg_control; /* Ancillary data (eg BSD filedesc passing). */
156 size_t msg_controllen; /* Ancillary data buffer length. */
158 int msg_flags; /* Flags on received message. */
161 /* Structure used for storage of ancillary data object information. */
164 size_t cmsg_len; /* Length of data in cmsg_data plus length
165 of cmsghdr structure. */
166 int cmsg_level; /* Originating protocol. */
167 int cmsg_type; /* Protocol specific type. */
168 #if !defined __STRICT_ANSI__ && defined __GNUC__ && __GNUC__ >= 2
169 unsigned char __cmsg_data[0]; /* Ancillary data. */
170 /* XXX Perhaps this should be removed. */
174 /* Ancillary data object manipulation macros. */
175 #if !defined __STRICT_ANSI__ && defined __GNUC__ && __GNUC__ >= 2
176 # define CMSG_DATA(cmsg) ((cmsg)->__cmsg_data)
178 # define CMSG_DATA(cmsg) ((unsigned char *) ((struct cmsghdr *) (cmsg) + 1))
180 #define CMSG_NXTHDR(mhdr, cmsg) __cmsg_nxthdr (mhdr, cmsg)
181 #define CMSG_FIRSTHDR(mhdr) \
182 ((size_t) (mhdr)->msg_controllen >= sizeof (struct cmsghdr) \
183 ? (struct cmsghdr *) (mhdr)->msg_control : (struct cmsghdr *) NULL)
184 #define CMSG_ALIGN(len) (((len) + sizeof (size_t) - 1) \
185 & ~(sizeof (size_t) - 1))
186 #define CMSG_SPACE(len) (CMSG_ALIGN (len) \
187 + CMSG_ALIGN (sizeof (struct cmsghdr)))
188 #define CMSG_LEN(len) (CMSG_ALIGN (sizeof (struct cmsghdr)) + (len))
190 #ifndef _EXTERN_INLINE
191 # define _EXTERN_INLINE extern __inline
193 extern struct cmsghdr *__cmsg_nxthdr __P ((struct msghdr *__mhdr,
194 struct cmsghdr *__cmsg));
195 _EXTERN_INLINE struct cmsghdr *
196 __cmsg_nxthdr (struct msghdr *__mhdr, struct cmsghdr *__cmsg)
200 if ((size_t) __cmsg->cmsg_len < sizeof (struct cmsghdr))
201 /* The kernel header does this so there may be a reason. */
204 __p = (((unsigned char *) __cmsg)
205 + ((__cmsg->cmsg_len + sizeof (long int) - 1) & ~sizeof (long int)));
206 if (__p >= (unsigned char *) __mhdr->msg_control + __mhdr->msg_controllen)
207 /* No more entries. */
209 return (struct cmsghdr *) __p;
212 /* Socket level message types. This must match the definitions in
216 SCM_RIGHTS = 0x01, /* Data array contains access rights. */
217 #define SCM_RIGHTS SCM_RIGHTS
218 __SCM_CREDENTIALS = 0x02, /* Data array is `struct ucred'. */
219 __SCM_CONNECT = 0x03 /* Data array is `struct scm_connect'. */
223 /* Get socket manipulation related informations from kernel headers. */
224 #include <asm/socket.h>
227 /* Structure used to manipulate the SO_LINGER option. */
230 int l_onoff; /* Nonzero to linger on close. */
231 int l_linger; /* Time to linger. */