1/* System-specific socket constants and types. Linux version.
2 Copyright (C) 1991-2017 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_IB 27 /* Native InfiniBand address. */
72#define PF_MPLS 28 /* MPLS. */
73#define PF_CAN 29 /* Controller Area Network. */
74#define PF_TIPC 30 /* TIPC sockets. */
75#define PF_BLUETOOTH 31 /* Bluetooth sockets. */
76#define PF_IUCV 32 /* IUCV sockets. */
77#define PF_RXRPC 33 /* RxRPC sockets. */
78#define PF_ISDN 34 /* mISDN sockets. */
79#define PF_PHONET 35 /* Phonet sockets. */
80#define PF_IEEE802154 36 /* IEEE 802.15.4 sockets. */
81#define PF_CAIF 37 /* CAIF sockets. */
82#define PF_ALG 38 /* Algorithm sockets. */
83#define PF_NFC 39 /* NFC sockets. */
84#define PF_VSOCK 40 /* vSockets. */
85#define PF_KCM 41 /* Kernel Connection Multiplexor. */
86#define PF_QIPCRTR 42 /* Qualcomm IPC Router. */
87#define PF_SMC 43 /* SMC sockets. */
88#define PF_MAX 44 /* For now.. */
89
90/* Address families. */
91#define AF_UNSPEC PF_UNSPEC
92#define AF_LOCAL PF_LOCAL
93#define AF_UNIX PF_UNIX
94#define AF_FILE PF_FILE
95#define AF_INET PF_INET
96#define AF_AX25 PF_AX25
97#define AF_IPX PF_IPX
98#define AF_APPLETALK PF_APPLETALK
99#define AF_NETROM PF_NETROM
100#define AF_BRIDGE PF_BRIDGE
101#define AF_ATMPVC PF_ATMPVC
102#define AF_X25 PF_X25
103#define AF_INET6 PF_INET6
104#define AF_ROSE PF_ROSE
105#define AF_DECnet PF_DECnet
106#define AF_NETBEUI PF_NETBEUI
107#define AF_SECURITY PF_SECURITY
108#define AF_KEY PF_KEY
109#define AF_NETLINK PF_NETLINK
110#define AF_ROUTE PF_ROUTE
111#define AF_PACKET PF_PACKET
112#define AF_ASH PF_ASH
113#define AF_ECONET PF_ECONET
114#define AF_ATMSVC PF_ATMSVC
115#define AF_RDS PF_RDS
116#define AF_SNA PF_SNA
117#define AF_IRDA PF_IRDA
118#define AF_PPPOX PF_PPPOX
119#define AF_WANPIPE PF_WANPIPE
120#define AF_LLC PF_LLC
121#define AF_IB PF_IB
122#define AF_MPLS PF_MPLS
123#define AF_CAN PF_CAN
124#define AF_TIPC PF_TIPC
125#define AF_BLUETOOTH PF_BLUETOOTH
126#define AF_IUCV PF_IUCV
127#define AF_RXRPC PF_RXRPC
128#define AF_ISDN PF_ISDN
129#define AF_PHONET PF_PHONET
130#define AF_IEEE802154 PF_IEEE802154
131#define AF_CAIF PF_CAIF
132#define AF_ALG PF_ALG
133#define AF_NFC PF_NFC
134#define AF_VSOCK PF_VSOCK
135#define AF_KCM PF_KCM
136#define AF_QIPCRTR PF_QIPCRTR
137#define AF_SMC PF_SMC
138#define AF_MAX PF_MAX
139
140/* Socket level values. Others are defined in the appropriate headers.
141
142 XXX These definitions also should go into the appropriate headers as
143 far as they are available. */
144#define SOL_RAW 255
145#define SOL_DECNET 261
146#define SOL_X25 262
147#define SOL_PACKET 263
148#define SOL_ATM 264 /* ATM layer (cell level). */
149#define SOL_AAL 265 /* ATM Adaption Layer (packet level). */
150#define SOL_IRDA 266
151#define SOL_NETBEUI 267
152#define SOL_LLC 268
153#define SOL_DCCP 269
154#define SOL_NETLINK 270
155#define SOL_TIPC 271
156#define SOL_RXRPC 272
157#define SOL_PPPOL2TP 273
158#define SOL_BLUETOOTH 274
159#define SOL_PNPIPE 275
160#define SOL_RDS 276
161#define SOL_IUCV 277
162#define SOL_CAIF 278
163#define SOL_ALG 279
164#define SOL_NFC 280
165#define SOL_KCM 281
166
167/* Maximum queue length specifiable by listen. */
168#define SOMAXCONN 128
169
170/* Get the definition of the macro to define the common sockaddr members. */
171#include <bits/sockaddr.h>
172
173/* Structure describing a generic socket address. */
174struct sockaddr
175 {
176 __SOCKADDR_COMMON (sa_); /* Common data: address family and length. */
177 char sa_data[14]; /* Address data. */
178 };
179
180
181/* Structure large enough to hold any socket address (with the historical
182 exception of AF_UNIX). */
183#define __ss_aligntype unsigned long int
184#define _SS_PADSIZE \
185 (_SS_SIZE - __SOCKADDR_COMMON_SIZE - sizeof (__ss_aligntype))
186
187struct sockaddr_storage
188 {
189 __SOCKADDR_COMMON (ss_); /* Address family, etc. */
190 char __ss_padding[_SS_PADSIZE];
191 __ss_aligntype __ss_align; /* Force desired alignment. */
192 };
193
194
195/* Bits in the FLAGS argument to `send', `recv', et al. */
196enum
197 {
198 MSG_OOB = 0x01, /* Process out-of-band data. */
199#define MSG_OOB MSG_OOB
200 MSG_PEEK = 0x02, /* Peek at incoming messages. */
201#define MSG_PEEK MSG_PEEK
202 MSG_DONTROUTE = 0x04, /* Don't use local routing. */
203#define MSG_DONTROUTE MSG_DONTROUTE
204#ifdef __USE_GNU
205 /* DECnet uses a different name. */
206 MSG_TRYHARD = MSG_DONTROUTE,
207# define MSG_TRYHARD MSG_DONTROUTE
208#endif
209 MSG_CTRUNC = 0x08, /* Control data lost before delivery. */
210#define MSG_CTRUNC MSG_CTRUNC
211 MSG_PROXY = 0x10, /* Supply or ask second address. */
212#define MSG_PROXY MSG_PROXY
213 MSG_TRUNC = 0x20,
214#define MSG_TRUNC MSG_TRUNC
215 MSG_DONTWAIT = 0x40, /* Nonblocking IO. */
216#define MSG_DONTWAIT MSG_DONTWAIT
217 MSG_EOR = 0x80, /* End of record. */
218#define MSG_EOR MSG_EOR
219 MSG_WAITALL = 0x100, /* Wait for a full request. */
220#define MSG_WAITALL MSG_WAITALL
221 MSG_FIN = 0x200,
222#define MSG_FIN MSG_FIN
223 MSG_SYN = 0x400,
224#define MSG_SYN MSG_SYN
225 MSG_CONFIRM = 0x800, /* Confirm path validity. */
226#define MSG_CONFIRM MSG_CONFIRM
227 MSG_RST = 0x1000,
228#define MSG_RST MSG_RST
229 MSG_ERRQUEUE = 0x2000, /* Fetch message from error queue. */
230#define MSG_ERRQUEUE MSG_ERRQUEUE
231 MSG_NOSIGNAL = 0x4000, /* Do not generate SIGPIPE. */
232#define MSG_NOSIGNAL MSG_NOSIGNAL
233 MSG_MORE = 0x8000, /* Sender will send more. */
234#define MSG_MORE MSG_MORE
235 MSG_WAITFORONE = 0x10000, /* Wait for at least one packet to return.*/
236#define MSG_WAITFORONE MSG_WAITFORONE
237 MSG_BATCH = 0x40000, /* sendmmsg: more messages coming. */
238#define MSG_BATCH MSG_BATCH
239 MSG_FASTOPEN = 0x20000000, /* Send data in TCP SYN. */
240#define MSG_FASTOPEN MSG_FASTOPEN
241
242 MSG_CMSG_CLOEXEC = 0x40000000 /* Set close_on_exit for file
243 descriptor received through
244 SCM_RIGHTS. */
245#define MSG_CMSG_CLOEXEC MSG_CMSG_CLOEXEC
246 };
247
248
249/* Structure describing messages sent by
250 `sendmsg' and received by `recvmsg'. */
251struct msghdr
252 {
253 void *msg_name; /* Address to send to/receive from. */
254 socklen_t msg_namelen; /* Length of address data. */
255
256 struct iovec *msg_iov; /* Vector of data to send/receive into. */
257 size_t msg_iovlen; /* Number of elements in the vector. */
258
259 void *msg_control; /* Ancillary data (eg BSD filedesc passing). */
260 size_t msg_controllen; /* Ancillary data buffer length.
261 !! The type should be socklen_t but the
262 definition of the kernel is incompatible
263 with this. */
264
265 int msg_flags; /* Flags on received message. */
266 };
267
268/* Structure used for storage of ancillary data object information. */
269struct cmsghdr
270 {
271 size_t cmsg_len; /* Length of data in cmsg_data plus length
272 of cmsghdr structure.
273 !! The type should be socklen_t but the
274 definition of the kernel is incompatible
275 with this. */
276 int cmsg_level; /* Originating protocol. */
277 int cmsg_type; /* Protocol specific type. */
278#if __glibc_c99_flexarr_available
279 __extension__ unsigned char __cmsg_data __flexarr; /* Ancillary data. */
280#endif
281 };
282
283/* Ancillary data object manipulation macros. */
284#if __glibc_c99_flexarr_available
285# define CMSG_DATA(cmsg) ((cmsg)->__cmsg_data)
286#else
287# define CMSG_DATA(cmsg) ((unsigned char *) ((struct cmsghdr *) (cmsg) + 1))
288#endif
289#define CMSG_NXTHDR(mhdr, cmsg) __cmsg_nxthdr (mhdr, cmsg)
290#define CMSG_FIRSTHDR(mhdr) \
291 ((size_t) (mhdr)->msg_controllen >= sizeof (struct cmsghdr) \
292 ? (struct cmsghdr *) (mhdr)->msg_control : (struct cmsghdr *) 0)
293#define CMSG_ALIGN(len) (((len) + sizeof (size_t) - 1) \
294 & (size_t) ~(sizeof (size_t) - 1))
295#define CMSG_SPACE(len) (CMSG_ALIGN (len) \
296 + CMSG_ALIGN (sizeof (struct cmsghdr)))
297#define CMSG_LEN(len) (CMSG_ALIGN (sizeof (struct cmsghdr)) + (len))
298
299extern struct cmsghdr *__cmsg_nxthdr (struct msghdr *__mhdr,
300 struct cmsghdr *__cmsg) __THROW;
301#ifdef __USE_EXTERN_INLINES
302# ifndef _EXTERN_INLINE
303# define _EXTERN_INLINE __extern_inline
304# endif
305_EXTERN_INLINE struct cmsghdr *
306__NTH (__cmsg_nxthdr (struct msghdr *__mhdr, struct cmsghdr *__cmsg))
307{
308 if ((size_t) __cmsg->cmsg_len < sizeof (struct cmsghdr))
309 /* The kernel header does this so there may be a reason. */
310 return (struct cmsghdr *) 0;
311
312 __cmsg = (struct cmsghdr *) ((unsigned char *) __cmsg
313 + CMSG_ALIGN (__cmsg->cmsg_len));
314 if ((unsigned char *) (__cmsg + 1) > ((unsigned char *) __mhdr->msg_control
315 + __mhdr->msg_controllen)
316 || ((unsigned char *) __cmsg + CMSG_ALIGN (__cmsg->cmsg_len)
317 > ((unsigned char *) __mhdr->msg_control + __mhdr->msg_controllen)))
318 /* No more entries. */
319 return (struct cmsghdr *) 0;
320 return __cmsg;
321}
322#endif /* Use `extern inline'. */
323
324/* Socket level message types. This must match the definitions in
325 <linux/socket.h>. */
326enum
327 {
328 SCM_RIGHTS = 0x01 /* Transfer file descriptors. */
329#define SCM_RIGHTS SCM_RIGHTS
330#ifdef __USE_GNU
331 , SCM_CREDENTIALS = 0x02 /* Credentials passing. */
332# define SCM_CREDENTIALS SCM_CREDENTIALS
333#endif
334 };
335
336#ifdef __USE_GNU
337/* User visible structure for SCM_CREDENTIALS message */
338struct ucred
339{
340 pid_t pid; /* PID of sending process. */
341 uid_t uid; /* UID of sending process. */
342 gid_t gid; /* GID of sending process. */
343};
344#endif
345
346/* Ugly workaround for unclean kernel headers. */
347#ifndef __USE_MISC
348# ifndef FIOGETOWN
349# define __SYS_SOCKET_H_undef_FIOGETOWN
350# endif
351# ifndef FIOSETOWN
352# define __SYS_SOCKET_H_undef_FIOSETOWN
353# endif
354# ifndef SIOCATMARK
355# define __SYS_SOCKET_H_undef_SIOCATMARK
356# endif
357# ifndef SIOCGPGRP
358# define __SYS_SOCKET_H_undef_SIOCGPGRP
359# endif
360# ifndef SIOCGSTAMP
361# define __SYS_SOCKET_H_undef_SIOCGSTAMP
362# endif
363# ifndef SIOCGSTAMPNS
364# define __SYS_SOCKET_H_undef_SIOCGSTAMPNS
365# endif
366# ifndef SIOCSPGRP
367# define __SYS_SOCKET_H_undef_SIOCSPGRP
368# endif
369#endif
370#ifndef IOCSIZE_MASK
371# define __SYS_SOCKET_H_undef_IOCSIZE_MASK
372#endif
373#ifndef IOCSIZE_SHIFT
374# define __SYS_SOCKET_H_undef_IOCSIZE_SHIFT
375#endif
376#ifndef IOC_IN
377# define __SYS_SOCKET_H_undef_IOC_IN
378#endif
379#ifndef IOC_INOUT
380# define __SYS_SOCKET_H_undef_IOC_INOUT
381#endif
382#ifndef IOC_OUT
383# define __SYS_SOCKET_H_undef_IOC_OUT
384#endif
385
386/* Get socket manipulation related informations from kernel headers. */
387#include <asm/socket.h>
388
389#ifndef __USE_MISC
390# ifdef __SYS_SOCKET_H_undef_FIOGETOWN
391# undef __SYS_SOCKET_H_undef_FIOGETOWN
392# undef FIOGETOWN
393# endif
394# ifdef __SYS_SOCKET_H_undef_FIOSETOWN
395# undef __SYS_SOCKET_H_undef_FIOSETOWN
396# undef FIOSETOWN
397# endif
398# ifdef __SYS_SOCKET_H_undef_SIOCATMARK
399# undef __SYS_SOCKET_H_undef_SIOCATMARK
400# undef SIOCATMARK
401# endif
402# ifdef __SYS_SOCKET_H_undef_SIOCGPGRP
403# undef __SYS_SOCKET_H_undef_SIOCGPGRP
404# undef SIOCGPGRP
405# endif
406# ifdef __SYS_SOCKET_H_undef_SIOCGSTAMP
407# undef __SYS_SOCKET_H_undef_SIOCGSTAMP
408# undef SIOCGSTAMP
409# endif
410# ifdef __SYS_SOCKET_H_undef_SIOCGSTAMPNS
411# undef __SYS_SOCKET_H_undef_SIOCGSTAMPNS
412# undef SIOCGSTAMPNS
413# endif
414# ifdef __SYS_SOCKET_H_undef_SIOCSPGRP
415# undef __SYS_SOCKET_H_undef_SIOCSPGRP
416# undef SIOCSPGRP
417# endif
418#endif
419#ifdef __SYS_SOCKET_H_undef_IOCSIZE_MASK
420# undef __SYS_SOCKET_H_undef_IOCSIZE_MASK
421# undef IOCSIZE_MASK
422#endif
423#ifdef __SYS_SOCKET_H_undef_IOCSIZE_SHIFT
424# undef __SYS_SOCKET_H_undef_IOCSIZE_SHIFT
425# undef IOCSIZE_SHIFT
426#endif
427#ifdef __SYS_SOCKET_H_undef_IOC_IN
428# undef __SYS_SOCKET_H_undef_IOC_IN
429# undef IOC_IN
430#endif
431#ifdef __SYS_SOCKET_H_undef_IOC_INOUT
432# undef __SYS_SOCKET_H_undef_IOC_INOUT
433# undef IOC_INOUT
434#endif
435#ifdef __SYS_SOCKET_H_undef_IOC_OUT
436# undef __SYS_SOCKET_H_undef_IOC_OUT
437# undef IOC_OUT
438#endif
439
440/* Structure used to manipulate the SO_LINGER option. */
441struct linger
442 {
443 int l_onoff; /* Nonzero to linger on close. */
444 int l_linger; /* Time to linger. */
445 };
446
447#endif /* bits/socket.h */
448