1/* System-specific socket constants and types. Linux version.
2 Copyright (C) 1991-2014 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 Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the 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 Lesser General Public License for more details.
14
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, see
17 <http://www.gnu.org/licenses/>. */
18
19#ifndef __BITS_SOCKET_H
20#define __BITS_SOCKET_H
21
22#ifndef _SYS_SOCKET_H
23# error "Never include <bits/socket.h> directly; use <sys/socket.h> instead."
24#endif
25
26#define __need_size_t
27#include <stddef.h>
28
29#include <sys/types.h>
30
31/* Type for length arguments in socket calls. */
32#ifndef __socklen_t_defined
33typedef __socklen_t socklen_t;
34# define __socklen_t_defined
35#endif
36
37/* Get the architecture-dependent definition of enum __socket_type. */
38#include <bits/socket_type.h>
39
40/* Protocol families. */
41#define PF_UNSPEC 0 /* Unspecified. */
42#define PF_LOCAL 1 /* Local to host (pipes and file-domain). */
43#define PF_UNIX PF_LOCAL /* POSIX name for PF_LOCAL. */
44#define PF_FILE PF_LOCAL /* Another non-standard name for PF_LOCAL. */
45#define PF_INET 2 /* IP protocol family. */
46#define PF_AX25 3 /* Amateur Radio AX.25. */
47#define PF_IPX 4 /* Novell Internet Protocol. */
48#define PF_APPLETALK 5 /* Appletalk DDP. */
49#define PF_NETROM 6 /* Amateur radio NetROM. */
50#define PF_BRIDGE 7 /* Multiprotocol bridge. */
51#define PF_ATMPVC 8 /* ATM PVCs. */
52#define PF_X25 9 /* Reserved for X.25 project. */
53#define PF_INET6 10 /* IP version 6. */
54#define PF_ROSE 11 /* Amateur Radio X.25 PLP. */
55#define PF_DECnet 12 /* Reserved for DECnet project. */
56#define PF_NETBEUI 13 /* Reserved for 802.2LLC project. */
57#define PF_SECURITY 14 /* Security callback pseudo AF. */
58#define PF_KEY 15 /* PF_KEY key management API. */
59#define PF_NETLINK 16
60#define PF_ROUTE PF_NETLINK /* Alias to emulate 4.4BSD. */
61#define PF_PACKET 17 /* Packet family. */
62#define PF_ASH 18 /* Ash. */
63#define PF_ECONET 19 /* Acorn Econet. */
64#define PF_ATMSVC 20 /* ATM SVCs. */
65#define PF_RDS 21 /* RDS sockets. */
66#define PF_SNA 22 /* Linux SNA Project */
67#define PF_IRDA 23 /* IRDA sockets. */
68#define PF_PPPOX 24 /* PPPoX sockets. */
69#define PF_WANPIPE 25 /* Wanpipe API sockets. */
70#define PF_LLC 26 /* Linux LLC. */
71#define PF_CAN 29 /* Controller Area Network. */
72#define PF_TIPC 30 /* TIPC sockets. */
73#define PF_BLUETOOTH 31 /* Bluetooth sockets. */
74#define PF_IUCV 32 /* IUCV sockets. */
75#define PF_RXRPC 33 /* RxRPC sockets. */
76#define PF_ISDN 34 /* mISDN sockets. */
77#define PF_PHONET 35 /* Phonet sockets. */
78#define PF_IEEE802154 36 /* IEEE 802.15.4 sockets. */
79#define PF_CAIF 37 /* CAIF sockets. */
80#define PF_ALG 38 /* Algorithm sockets. */
81#define PF_NFC 39 /* NFC sockets. */
82#define PF_VSOCK 40 /* vSockets. */
83#define PF_MAX 41 /* For now.. */
84
85/* Address families. */
86#define AF_UNSPEC PF_UNSPEC
87#define AF_LOCAL PF_LOCAL
88#define AF_UNIX PF_UNIX
89#define AF_FILE PF_FILE
90#define AF_INET PF_INET
91#define AF_AX25 PF_AX25
92#define AF_IPX PF_IPX
93#define AF_APPLETALK PF_APPLETALK
94#define AF_NETROM PF_NETROM
95#define AF_BRIDGE PF_BRIDGE
96#define AF_ATMPVC PF_ATMPVC
97#define AF_X25 PF_X25
98#define AF_INET6 PF_INET6
99#define AF_ROSE PF_ROSE
100#define AF_DECnet PF_DECnet
101#define AF_NETBEUI PF_NETBEUI
102#define AF_SECURITY PF_SECURITY
103#define AF_KEY PF_KEY
104#define AF_NETLINK PF_NETLINK
105#define AF_ROUTE PF_ROUTE
106#define AF_PACKET PF_PACKET
107#define AF_ASH PF_ASH
108#define AF_ECONET PF_ECONET
109#define AF_ATMSVC PF_ATMSVC
110#define AF_RDS PF_RDS
111#define AF_SNA PF_SNA
112#define AF_IRDA PF_IRDA
113#define AF_PPPOX PF_PPPOX
114#define AF_WANPIPE PF_WANPIPE
115#define AF_LLC PF_LLC
116#define AF_CAN PF_CAN
117#define AF_TIPC PF_TIPC
118#define AF_BLUETOOTH PF_BLUETOOTH
119#define AF_IUCV PF_IUCV
120#define AF_RXRPC PF_RXRPC
121#define AF_ISDN PF_ISDN
122#define AF_PHONET PF_PHONET
123#define AF_IEEE802154 PF_IEEE802154
124#define AF_CAIF PF_CAIF
125#define AF_ALG PF_ALG
126#define AF_NFC PF_NFC
127#define AF_VSOCK PF_VSOCK
128#define AF_MAX PF_MAX
129
130/* Socket level values. Others are defined in the appropriate headers.
131
132 XXX These definitions also should go into the appropriate headers as
133 far as they are available. */
134#define SOL_RAW 255
135#define SOL_DECNET 261
136#define SOL_X25 262
137#define SOL_PACKET 263
138#define SOL_ATM 264 /* ATM layer (cell level). */
139#define SOL_AAL 265 /* ATM Adaption Layer (packet level). */
140#define SOL_IRDA 266
141
142/* Maximum queue length specifiable by listen. */
143#define SOMAXCONN 128
144
145/* Get the definition of the macro to define the common sockaddr members. */
146#include <bits/sockaddr.h>
147
148/* Structure describing a generic socket address. */
149struct sockaddr
150 {
151 __SOCKADDR_COMMON (sa_); /* Common data: address family and length. */
152 char sa_data[14]; /* Address data. */
153 };
154
155
156/* Structure large enough to hold any socket address (with the historical
157 exception of AF_UNIX). We reserve 128 bytes. */
158#define __ss_aligntype unsigned long int
159#define _SS_SIZE 128
160#define _SS_PADSIZE (_SS_SIZE - (2 * sizeof (__ss_aligntype)))
161
162struct sockaddr_storage
163 {
164 __SOCKADDR_COMMON (ss_); /* Address family, etc. */
165 __ss_aligntype __ss_align; /* Force desired alignment. */
166 char __ss_padding[_SS_PADSIZE];
167 };
168
169
170/* Bits in the FLAGS argument to `send', `recv', et al. */
171enum
172 {
173 MSG_OOB = 0x01, /* Process out-of-band data. */
174#define MSG_OOB MSG_OOB
175 MSG_PEEK = 0x02, /* Peek at incoming messages. */
176#define MSG_PEEK MSG_PEEK
177 MSG_DONTROUTE = 0x04, /* Don't use local routing. */
178#define MSG_DONTROUTE MSG_DONTROUTE
179#ifdef __USE_GNU
180 /* DECnet uses a different name. */
181 MSG_TRYHARD = MSG_DONTROUTE,
182# define MSG_TRYHARD MSG_DONTROUTE
183#endif
184 MSG_CTRUNC = 0x08, /* Control data lost before delivery. */
185#define MSG_CTRUNC MSG_CTRUNC
186 MSG_PROXY = 0x10, /* Supply or ask second address. */
187#define MSG_PROXY MSG_PROXY
188 MSG_TRUNC = 0x20,
189#define MSG_TRUNC MSG_TRUNC
190 MSG_DONTWAIT = 0x40, /* Nonblocking IO. */
191#define MSG_DONTWAIT MSG_DONTWAIT
192 MSG_EOR = 0x80, /* End of record. */
193#define MSG_EOR MSG_EOR
194 MSG_WAITALL = 0x100, /* Wait for a full request. */
195#define MSG_WAITALL MSG_WAITALL
196 MSG_FIN = 0x200,
197#define MSG_FIN MSG_FIN
198 MSG_SYN = 0x400,
199#define MSG_SYN MSG_SYN
200 MSG_CONFIRM = 0x800, /* Confirm path validity. */
201#define MSG_CONFIRM MSG_CONFIRM
202 MSG_RST = 0x1000,
203#define MSG_RST MSG_RST
204 MSG_ERRQUEUE = 0x2000, /* Fetch message from error queue. */
205#define MSG_ERRQUEUE MSG_ERRQUEUE
206 MSG_NOSIGNAL = 0x4000, /* Do not generate SIGPIPE. */
207#define MSG_NOSIGNAL MSG_NOSIGNAL
208 MSG_MORE = 0x8000, /* Sender will send more. */
209#define MSG_MORE MSG_MORE
210 MSG_WAITFORONE = 0x10000, /* Wait for at least one packet to return.*/
211#define MSG_WAITFORONE MSG_WAITFORONE
212 MSG_FASTOPEN = 0x20000000, /* Send data in TCP SYN. */
213#define MSG_FASTOPEN MSG_FASTOPEN
214
215 MSG_CMSG_CLOEXEC = 0x40000000 /* Set close_on_exit for file
216 descriptor received through
217 SCM_RIGHTS. */
218#define MSG_CMSG_CLOEXEC MSG_CMSG_CLOEXEC
219 };
220
221
222/* Structure describing messages sent by
223 `sendmsg' and received by `recvmsg'. */
224struct msghdr
225 {
226 void *msg_name; /* Address to send to/receive from. */
227 socklen_t msg_namelen; /* Length of address data. */
228
229 struct iovec *msg_iov; /* Vector of data to send/receive into. */
230 size_t msg_iovlen; /* Number of elements in the vector. */
231
232 void *msg_control; /* Ancillary data (eg BSD filedesc passing). */
233 size_t msg_controllen; /* Ancillary data buffer length.
234 !! The type should be socklen_t but the
235 definition of the kernel is incompatible
236 with this. */
237
238 int msg_flags; /* Flags on received message. */
239 };
240
241/* Structure used for storage of ancillary data object information. */
242struct cmsghdr
243 {
244 size_t cmsg_len; /* Length of data in cmsg_data plus length
245 of cmsghdr structure.
246 !! The type should be socklen_t but the
247 definition of the kernel is incompatible
248 with this. */
249 int cmsg_level; /* Originating protocol. */
250 int cmsg_type; /* Protocol specific type. */
251#if (!defined __STRICT_ANSI__ && __GNUC__ >= 2) || __STDC_VERSION__ >= 199901L
252 __extension__ unsigned char __cmsg_data __flexarr; /* Ancillary data. */
253#endif
254 };
255
256/* Ancillary data object manipulation macros. */
257#if (!defined __STRICT_ANSI__ && __GNUC__ >= 2) || __STDC_VERSION__ >= 199901L
258# define CMSG_DATA(cmsg) ((cmsg)->__cmsg_data)
259#else
260# define CMSG_DATA(cmsg) ((unsigned char *) ((struct cmsghdr *) (cmsg) + 1))
261#endif
262#define CMSG_NXTHDR(mhdr, cmsg) __cmsg_nxthdr (mhdr, cmsg)
263#define CMSG_FIRSTHDR(mhdr) \
264 ((size_t) (mhdr)->msg_controllen >= sizeof (struct cmsghdr) \
265 ? (struct cmsghdr *) (mhdr)->msg_control : (struct cmsghdr *) 0)
266#define CMSG_ALIGN(len) (((len) + sizeof (size_t) - 1) \
267 & (size_t) ~(sizeof (size_t) - 1))
268#define CMSG_SPACE(len) (CMSG_ALIGN (len) \
269 + CMSG_ALIGN (sizeof (struct cmsghdr)))
270#define CMSG_LEN(len) (CMSG_ALIGN (sizeof (struct cmsghdr)) + (len))
271
272extern struct cmsghdr *__cmsg_nxthdr (struct msghdr *__mhdr,
273 struct cmsghdr *__cmsg) __THROW;
274#ifdef __USE_EXTERN_INLINES
275# ifndef _EXTERN_INLINE
276# define _EXTERN_INLINE __extern_inline
277# endif
278_EXTERN_INLINE struct cmsghdr *
279__NTH (__cmsg_nxthdr (struct msghdr *__mhdr, struct cmsghdr *__cmsg))
280{
281 if ((size_t) __cmsg->cmsg_len < sizeof (struct cmsghdr))
282 /* The kernel header does this so there may be a reason. */
283 return (struct cmsghdr *) 0;
284
285 __cmsg = (struct cmsghdr *) ((unsigned char *) __cmsg
286 + CMSG_ALIGN (__cmsg->cmsg_len));
287 if ((unsigned char *) (__cmsg + 1) > ((unsigned char *) __mhdr->msg_control
288 + __mhdr->msg_controllen)
289 || ((unsigned char *) __cmsg + CMSG_ALIGN (__cmsg->cmsg_len)
290 > ((unsigned char *) __mhdr->msg_control + __mhdr->msg_controllen)))
291 /* No more entries. */
292 return (struct cmsghdr *) 0;
293 return __cmsg;
294}
295#endif /* Use `extern inline'. */
296
297/* Socket level message types. This must match the definitions in
298 <linux/socket.h>. */
299enum
300 {
301 SCM_RIGHTS = 0x01 /* Transfer file descriptors. */
302#define SCM_RIGHTS SCM_RIGHTS
303#ifdef __USE_GNU
304 , SCM_CREDENTIALS = 0x02 /* Credentials passing. */
305# define SCM_CREDENTIALS SCM_CREDENTIALS
306#endif
307 };
308
309#ifdef __USE_GNU
310/* User visible structure for SCM_CREDENTIALS message */
311struct ucred
312{
313 pid_t pid; /* PID of sending process. */
314 uid_t uid; /* UID of sending process. */
315 gid_t gid; /* GID of sending process. */
316};
317#endif
318
319/* Ugly workaround for unclean kernel headers. */
320#if !defined __USE_MISC && !defined __USE_GNU
321# ifndef FIOGETOWN
322# define __SYS_SOCKET_H_undef_FIOGETOWN
323# endif
324# ifndef FIOSETOWN
325# define __SYS_SOCKET_H_undef_FIOSETOWN
326# endif
327# ifndef SIOCATMARK
328# define __SYS_SOCKET_H_undef_SIOCATMARK
329# endif
330# ifndef SIOCGPGRP
331# define __SYS_SOCKET_H_undef_SIOCGPGRP
332# endif
333# ifndef SIOCGSTAMP
334# define __SYS_SOCKET_H_undef_SIOCGSTAMP
335# endif
336# ifndef SIOCGSTAMPNS
337# define __SYS_SOCKET_H_undef_SIOCGSTAMPNS
338# endif
339# ifndef SIOCSPGRP
340# define __SYS_SOCKET_H_undef_SIOCSPGRP
341# endif
342#endif
343
344/* Get socket manipulation related informations from kernel headers. */
345#include <asm/socket.h>
346
347#if !defined __USE_MISC && !defined __USE_GNU
348# ifdef __SYS_SOCKET_H_undef_FIOGETOWN
349# undef __SYS_SOCKET_H_undef_FIOGETOWN
350# undef FIOGETOWN
351# endif
352# ifdef __SYS_SOCKET_H_undef_FIOSETOWN
353# undef __SYS_SOCKET_H_undef_FIOSETOWN
354# undef FIOSETOWN
355# endif
356# ifdef __SYS_SOCKET_H_undef_SIOCATMARK
357# undef __SYS_SOCKET_H_undef_SIOCATMARK
358# undef SIOCATMARK
359# endif
360# ifdef __SYS_SOCKET_H_undef_SIOCGPGRP
361# undef __SYS_SOCKET_H_undef_SIOCGPGRP
362# undef SIOCGPGRP
363# endif
364# ifdef __SYS_SOCKET_H_undef_SIOCGSTAMP
365# undef __SYS_SOCKET_H_undef_SIOCGSTAMP
366# undef SIOCGSTAMP
367# endif
368# ifdef __SYS_SOCKET_H_undef_SIOCGSTAMPNS
369# undef __SYS_SOCKET_H_undef_SIOCGSTAMPNS
370# undef SIOCGSTAMPNS
371# endif
372# ifdef __SYS_SOCKET_H_undef_SIOCSPGRP
373# undef __SYS_SOCKET_H_undef_SIOCSPGRP
374# undef SIOCSPGRP
375# endif
376#endif
377
378/* Structure used to manipulate the SO_LINGER option. */
379struct linger
380 {
381 int l_onoff; /* Nonzero to linger on close. */
382 int l_linger; /* Time to linger. */
383 };
384
385#endif /* bits/socket.h */
386