1 /* System-specific socket constants and types. Linux version.
2 Copyright (C) 1991, 1992, 1994-2001, 2004, 2006, 2007, 2008, 2009,
3 2010 Free Software Foundation, Inc.
4 This file is part of the GNU C Library.
6 The GNU C Library is free software; you can redistribute it and/or
7 modify it under the terms of the GNU Lesser General Public
8 License as published by the Free Software Foundation; either
9 version 2.1 of the License, or (at your option) any later version.
11 The GNU C Library is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 Lesser General Public License for more details.
16 You should have received a copy of the GNU Lesser General Public
17 License along with the GNU C Library; if not, write to the Free
18 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
21 #ifndef __BITS_SOCKET_H
22 #define __BITS_SOCKET_H
25 # error "Never include <bits/socket.h> directly; use <sys/socket.h> instead."
31 #include <sys/types.h>
33 /* Type for length arguments in socket calls. */
34 #ifndef __socklen_t_defined
35 typedef __socklen_t socklen_t
;
36 # define __socklen_t_defined
39 /* Types of sockets. */
42 SOCK_STREAM
= 1, /* Sequenced, reliable, connection-based
44 #define SOCK_STREAM SOCK_STREAM
45 SOCK_DGRAM
= 2, /* Connectionless, unreliable datagrams
46 of fixed maximum length. */
47 #define SOCK_DGRAM SOCK_DGRAM
48 SOCK_RAW
= 3, /* Raw protocol interface. */
49 #define SOCK_RAW SOCK_RAW
50 SOCK_RDM
= 4, /* Reliably-delivered messages. */
51 #define SOCK_RDM SOCK_RDM
52 SOCK_SEQPACKET
= 5, /* Sequenced, reliable, connection-based,
53 datagrams of fixed maximum length. */
54 #define SOCK_SEQPACKET SOCK_SEQPACKET
55 SOCK_DCCP
= 6, /* Datagram Congestion Control Protocol. */
56 #define SOCK_DCCP SOCK_DCCP
57 SOCK_PACKET
= 10, /* Linux specific way of getting packets
58 at the dev level. For writing rarp and
59 other similar things on the user level. */
60 #define SOCK_PACKET SOCK_PACKET
62 /* Flags to be ORed into the type parameter of socket and socketpair and
63 used for the flags parameter of paccept. */
65 SOCK_CLOEXEC
= 01000000, /* Atomically set close-on-exec flag for the
67 #define SOCK_CLOEXEC SOCK_CLOEXEC
69 SOCK_NONBLOCK
= 0x40000000 /* Atomically mark descriptor(s) as
71 #define SOCK_NONBLOCK SOCK_NONBLOCK
74 /* Protocol families. */
75 #define PF_UNSPEC 0 /* Unspecified. */
76 #define PF_LOCAL 1 /* Local to host (pipes and file-domain). */
77 #define PF_UNIX PF_LOCAL /* POSIX name for PF_LOCAL. */
78 #define PF_FILE PF_LOCAL /* Another non-standard name for PF_LOCAL. */
79 #define PF_INET 2 /* IP protocol family. */
80 #define PF_AX25 3 /* Amateur Radio AX.25. */
81 #define PF_IPX 4 /* Novell Internet Protocol. */
82 #define PF_APPLETALK 5 /* Appletalk DDP. */
83 #define PF_NETROM 6 /* Amateur radio NetROM. */
84 #define PF_BRIDGE 7 /* Multiprotocol bridge. */
85 #define PF_ATMPVC 8 /* ATM PVCs. */
86 #define PF_X25 9 /* Reserved for X.25 project. */
87 #define PF_INET6 10 /* IP version 6. */
88 #define PF_ROSE 11 /* Amateur Radio X.25 PLP. */
89 #define PF_DECnet 12 /* Reserved for DECnet project. */
90 #define PF_NETBEUI 13 /* Reserved for 802.2LLC project. */
91 #define PF_SECURITY 14 /* Security callback pseudo AF. */
92 #define PF_KEY 15 /* PF_KEY key management API. */
94 #define PF_ROUTE PF_NETLINK /* Alias to emulate 4.4BSD. */
95 #define PF_PACKET 17 /* Packet family. */
96 #define PF_ASH 18 /* Ash. */
97 #define PF_ECONET 19 /* Acorn Econet. */
98 #define PF_ATMSVC 20 /* ATM SVCs. */
99 #define PF_RDS 21 /* RDS sockets. */
100 #define PF_SNA 22 /* Linux SNA Project */
101 #define PF_IRDA 23 /* IRDA sockets. */
102 #define PF_PPPOX 24 /* PPPoX sockets. */
103 #define PF_WANPIPE 25 /* Wanpipe API sockets. */
104 #define PF_LLC 26 /* Linux LLC. */
105 #define PF_CAN 29 /* Controller Area Network. */
106 #define PF_TIPC 30 /* TIPC sockets. */
107 #define PF_BLUETOOTH 31 /* Bluetooth sockets. */
108 #define PF_IUCV 32 /* IUCV sockets. */
109 #define PF_RXRPC 33 /* RxRPC sockets. */
110 #define PF_ISDN 34 /* mISDN sockets. */
111 #define PF_PHONET 35 /* Phonet sockets. */
112 #define PF_IEEE802154 36 /* IEEE 802.15.4 sockets. */
113 #define PF_MAX 37 /* For now.. */
115 /* Address families. */
116 #define AF_UNSPEC PF_UNSPEC
117 #define AF_LOCAL PF_LOCAL
118 #define AF_UNIX PF_UNIX
119 #define AF_FILE PF_FILE
120 #define AF_INET PF_INET
121 #define AF_AX25 PF_AX25
122 #define AF_IPX PF_IPX
123 #define AF_APPLETALK PF_APPLETALK
124 #define AF_NETROM PF_NETROM
125 #define AF_BRIDGE PF_BRIDGE
126 #define AF_ATMPVC PF_ATMPVC
127 #define AF_X25 PF_X25
128 #define AF_INET6 PF_INET6
129 #define AF_ROSE PF_ROSE
130 #define AF_DECnet PF_DECnet
131 #define AF_NETBEUI PF_NETBEUI
132 #define AF_SECURITY PF_SECURITY
133 #define AF_KEY PF_KEY
134 #define AF_NETLINK PF_NETLINK
135 #define AF_ROUTE PF_ROUTE
136 #define AF_PACKET PF_PACKET
137 #define AF_ASH PF_ASH
138 #define AF_ECONET PF_ECONET
139 #define AF_ATMSVC PF_ATMSVC
140 #define AF_RDS PF_RDS
141 #define AF_SNA PF_SNA
142 #define AF_IRDA PF_IRDA
143 #define AF_PPPOX PF_PPPOX
144 #define AF_WANPIPE PF_WANPIPE
145 #define AF_LLC PF_LLC
146 #define AF_CAN PF_CAN
147 #define AF_TIPC PF_TIPC
148 #define AF_BLUETOOTH PF_BLUETOOTH
149 #define AF_IUCV PF_IUCV
150 #define AF_RXRPC PF_RXRPC
151 #define AF_ISDN PF_ISDN
152 #define AF_PHONET PF_PHONET
153 #define AF_IEEE802154 PF_IEEE802154
154 #define AF_MAX PF_MAX
156 /* Socket level values. Others are defined in the appropriate headers.
158 XXX These definitions also should go into the appropriate headers as
159 far as they are available. */
161 #define SOL_DECNET 261
163 #define SOL_PACKET 263
164 #define SOL_ATM 264 /* ATM layer (cell level). */
165 #define SOL_AAL 265 /* ATM Adaption Layer (packet level). */
168 /* Maximum queue length specifiable by listen. */
169 #define SOMAXCONN 128
171 /* Get the definition of the macro to define the common sockaddr members. */
172 #include <bits/sockaddr.h>
174 /* Structure describing a generic socket address. */
177 __SOCKADDR_COMMON (sa_
); /* Common data: address family and length. */
178 char sa_data
[14]; /* Address data. */
182 /* Structure large enough to hold any socket address (with the historical
183 exception of AF_UNIX). We reserve 128 bytes. */
184 #define __ss_aligntype unsigned long int
186 #define _SS_PADSIZE (_SS_SIZE - (2 * sizeof (__ss_aligntype)))
188 struct sockaddr_storage
190 __SOCKADDR_COMMON (ss_
); /* Address family, etc. */
191 __ss_aligntype __ss_align
; /* Force desired alignment. */
192 char __ss_padding
[_SS_PADSIZE
];
196 /* Bits in the FLAGS argument to `send', `recv', et al. */
199 MSG_OOB
= 0x01, /* Process out-of-band data. */
200 #define MSG_OOB MSG_OOB
201 MSG_PEEK
= 0x02, /* Peek at incoming messages. */
202 #define MSG_PEEK MSG_PEEK
203 MSG_DONTROUTE
= 0x04, /* Don't use local routing. */
204 #define MSG_DONTROUTE MSG_DONTROUTE
206 /* DECnet uses a different name. */
207 MSG_TRYHARD
= MSG_DONTROUTE
,
208 # define MSG_TRYHARD MSG_DONTROUTE
210 MSG_CTRUNC
= 0x08, /* Control data lost before delivery. */
211 #define MSG_CTRUNC MSG_CTRUNC
212 MSG_PROXY
= 0x10, /* Supply or ask second address. */
213 #define MSG_PROXY MSG_PROXY
215 #define MSG_TRUNC MSG_TRUNC
216 MSG_DONTWAIT
= 0x40, /* Nonblocking IO. */
217 #define MSG_DONTWAIT MSG_DONTWAIT
218 MSG_EOR
= 0x80, /* End of record. */
219 #define MSG_EOR MSG_EOR
220 MSG_WAITALL
= 0x100, /* Wait for a full request. */
221 #define MSG_WAITALL MSG_WAITALL
223 #define MSG_FIN MSG_FIN
225 #define MSG_SYN MSG_SYN
226 MSG_CONFIRM
= 0x800, /* Confirm path validity. */
227 #define MSG_CONFIRM MSG_CONFIRM
229 #define MSG_RST MSG_RST
230 MSG_ERRQUEUE
= 0x2000, /* Fetch message from error queue. */
231 #define MSG_ERRQUEUE MSG_ERRQUEUE
232 MSG_NOSIGNAL
= 0x4000, /* Do not generate SIGPIPE. */
233 #define MSG_NOSIGNAL MSG_NOSIGNAL
234 MSG_MORE
= 0x8000, /* Sender will send more. */
235 #define MSG_MORE MSG_MORE
237 MSG_CMSG_CLOEXEC
= 0x40000000 /* Set close_on_exit for file
238 descriptor received through
240 #define MSG_CMSG_CLOEXEC MSG_CMSG_CLOEXEC
244 /* Structure describing messages sent by
245 `sendmsg' and received by `recvmsg'. */
248 void *msg_name
; /* Address to send to/receive from. */
249 socklen_t msg_namelen
; /* Length of address data. */
251 struct iovec
*msg_iov
; /* Vector of data to send/receive into. */
252 size_t msg_iovlen
; /* Number of elements in the vector. */
254 void *msg_control
; /* Ancillary data (eg BSD filedesc passing). */
255 size_t msg_controllen
; /* Ancillary data buffer length.
256 !! The type should be socklen_t but the
257 definition of the kernel is incompatible
260 int msg_flags
; /* Flags on received message. */
263 /* Structure used for storage of ancillary data object information. */
266 size_t cmsg_len
; /* Length of data in cmsg_data plus length
267 of cmsghdr structure.
268 !! The type should be socklen_t but the
269 definition of the kernel is incompatible
271 int cmsg_level
; /* Originating protocol. */
272 int cmsg_type
; /* Protocol specific type. */
273 #if (!defined __STRICT_ANSI__ && __GNUC__ >= 2) || __STDC_VERSION__ >= 199901L
274 __extension__
unsigned char __cmsg_data __flexarr
; /* Ancillary data. */
278 /* Ancillary data object manipulation macros. */
279 #if (!defined __STRICT_ANSI__ && __GNUC__ >= 2) || __STDC_VERSION__ >= 199901L
280 # define CMSG_DATA(cmsg) ((cmsg)->__cmsg_data)
282 # define CMSG_DATA(cmsg) ((unsigned char *) ((struct cmsghdr *) (cmsg) + 1))
284 #define CMSG_NXTHDR(mhdr, cmsg) __cmsg_nxthdr (mhdr, cmsg)
285 #define CMSG_FIRSTHDR(mhdr) \
286 ((size_t) (mhdr)->msg_controllen >= sizeof (struct cmsghdr) \
287 ? (struct cmsghdr *) (mhdr)->msg_control : (struct cmsghdr *) 0)
288 #define CMSG_ALIGN(len) (((len) + sizeof (size_t) - 1) \
289 & (size_t) ~(sizeof (size_t) - 1))
290 #define CMSG_SPACE(len) (CMSG_ALIGN (len) \
291 + CMSG_ALIGN (sizeof (struct cmsghdr)))
292 #define CMSG_LEN(len) (CMSG_ALIGN (sizeof (struct cmsghdr)) + (len))
294 extern struct cmsghdr
*__cmsg_nxthdr (struct msghdr
*__mhdr
,
295 struct cmsghdr
*__cmsg
) __THROW
;
296 #ifdef __USE_EXTERN_INLINES
297 # ifndef _EXTERN_INLINE
298 # define _EXTERN_INLINE __extern_inline
300 _EXTERN_INLINE
struct cmsghdr
*
301 __NTH (__cmsg_nxthdr (struct msghdr
*__mhdr
, struct cmsghdr
*__cmsg
))
303 if ((size_t) __cmsg
->cmsg_len
< sizeof (struct cmsghdr
))
304 /* The kernel header does this so there may be a reason. */
307 __cmsg
= (struct cmsghdr
*) ((unsigned char *) __cmsg
308 + CMSG_ALIGN (__cmsg
->cmsg_len
));
309 if ((unsigned char *) (__cmsg
+ 1) > ((unsigned char *) __mhdr
->msg_control
310 + __mhdr
->msg_controllen
)
311 || ((unsigned char *) __cmsg
+ CMSG_ALIGN (__cmsg
->cmsg_len
)
312 > ((unsigned char *) __mhdr
->msg_control
+ __mhdr
->msg_controllen
)))
313 /* No more entries. */
317 #endif /* Use `extern inline'. */
319 /* Socket level message types. This must match the definitions in
323 SCM_RIGHTS
= 0x01 /* Transfer file descriptors. */
324 #define SCM_RIGHTS SCM_RIGHTS
326 , SCM_CREDENTIALS
= 0x02 /* Credentials passing. */
327 # define SCM_CREDENTIALS SCM_CREDENTIALS
332 /* User visible structure for SCM_CREDENTIALS message */
335 pid_t pid
; /* PID of sending process. */
336 uid_t uid
; /* UID of sending process. */
337 gid_t gid
; /* GID of sending process. */
341 /* Ugly workaround for unclean kernel headers. */
342 #if !defined __USE_MISC && !defined __USE_GNU
344 # define __SYS_SOCKET_H_undef_FIOGETOWN
347 # define __SYS_SOCKET_H_undef_FIOSETOWN
350 # define __SYS_SOCKET_H_undef_SIOCATMARK
353 # define __SYS_SOCKET_H_undef_SIOCGPGRP
356 # define __SYS_SOCKET_H_undef_SIOCGSTAMP
358 # ifndef SIOCGSTAMPNS
359 # define __SYS_SOCKET_H_undef_SIOCGSTAMPNS
362 # define __SYS_SOCKET_H_undef_SIOCSPGRP
366 /* Get socket manipulation related informations from kernel headers. */
367 #include <asm/socket.h>
369 #if !defined __USE_MISC && !defined __USE_GNU
370 # ifdef __SYS_SOCKET_H_undef_FIOGETOWN
371 # undef __SYS_SOCKET_H_undef_FIOGETOWN
374 # ifdef __SYS_SOCKET_H_undef_FIOSETOWN
375 # undef __SYS_SOCKET_H_undef_FIOSETOWN
378 # ifdef __SYS_SOCKET_H_undef_SIOCATMARK
379 # undef __SYS_SOCKET_H_undef_SIOCATMARK
382 # ifdef __SYS_SOCKET_H_undef_SIOCGPGRP
383 # undef __SYS_SOCKET_H_undef_SIOCGPGRP
386 # ifdef __SYS_SOCKET_H_undef_SIOCGSTAMP
387 # undef __SYS_SOCKET_H_undef_SIOCGSTAMP
390 # ifdef __SYS_SOCKET_H_undef_SIOCGSTAMPNS
391 # undef __SYS_SOCKET_H_undef_SIOCGSTAMPNS
394 # ifdef __SYS_SOCKET_H_undef_SIOCSPGRP
395 # undef __SYS_SOCKET_H_undef_SIOCSPGRP
400 /* Structure used to manipulate the SO_LINGER option. */
403 int l_onoff
; /* Nonzero to linger on close. */
404 int l_linger
; /* Time to linger. */
407 #endif /* bits/socket.h */