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/arm-none-linux-gnueabi/libc/usr/include/bits/socket.h

https://github.com/apc-io/apc-rock-toolchain
C++ Header | 435 lines | 324 code | 41 blank | 70 comment | 9 complexity | 9f545fdb046e2faf8cce978dfeb72f4f MD5 | raw file
  1/* System-specific socket constants and types.  Linux version.
  2   Copyright (C) 1991, 1992, 1994-2001, 2004, 2006-2010, 2011
  3   Free Software Foundation, Inc.
  4   This file is part of the GNU C Library.
  5
  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.
 10
 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.
 15
 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
 19   02111-1307 USA.  */
 20
 21#ifndef __BITS_SOCKET_H
 22#define __BITS_SOCKET_H
 23
 24#ifndef _SYS_SOCKET_H
 25# error "Never include <bits/socket.h> directly; use <sys/socket.h> instead."
 26#endif
 27
 28#define	__need_size_t
 29#include <stddef.h>
 30
 31#include <sys/types.h>
 32
 33/* Type for length arguments in socket calls.  */
 34#ifndef __socklen_t_defined
 35typedef __socklen_t socklen_t;
 36# define __socklen_t_defined
 37#endif
 38
 39/* Types of sockets.  */
 40enum __socket_type
 41{
 42  SOCK_STREAM = 1,		/* Sequenced, reliable, connection-based
 43				   byte streams.  */
 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
 61
 62  /* Flags to be ORed into the type parameter of socket and socketpair and
 63     used for the flags parameter of paccept.  */
 64
 65  SOCK_CLOEXEC = 02000000,	/* Atomically set close-on-exec flag for the
 66				   new descriptor(s).  */
 67#define SOCK_CLOEXEC SOCK_CLOEXEC
 68  SOCK_NONBLOCK = 04000		/* Atomically mark descriptor(s) as
 69				   non-blocking.  */
 70#define SOCK_NONBLOCK SOCK_NONBLOCK
 71};
 72
 73/* Protocol families.  */
 74#define	PF_UNSPEC	0	/* Unspecified.  */
 75#define	PF_LOCAL	1	/* Local to host (pipes and file-domain).  */
 76#define	PF_UNIX		PF_LOCAL /* POSIX name for PF_LOCAL.  */
 77#define	PF_FILE		PF_LOCAL /* Another non-standard name for PF_LOCAL.  */
 78#define	PF_INET		2	/* IP protocol family.  */
 79#define	PF_AX25		3	/* Amateur Radio AX.25.  */
 80#define	PF_IPX		4	/* Novell Internet Protocol.  */
 81#define	PF_APPLETALK	5	/* Appletalk DDP.  */
 82#define	PF_NETROM	6	/* Amateur radio NetROM.  */
 83#define	PF_BRIDGE	7	/* Multiprotocol bridge.  */
 84#define	PF_ATMPVC	8	/* ATM PVCs.  */
 85#define	PF_X25		9	/* Reserved for X.25 project.  */
 86#define	PF_INET6	10	/* IP version 6.  */
 87#define	PF_ROSE		11	/* Amateur Radio X.25 PLP.  */
 88#define	PF_DECnet	12	/* Reserved for DECnet project.  */
 89#define	PF_NETBEUI	13	/* Reserved for 802.2LLC project.  */
 90#define	PF_SECURITY	14	/* Security callback pseudo AF.  */
 91#define	PF_KEY		15	/* PF_KEY key management API.  */
 92#define	PF_NETLINK	16
 93#define	PF_ROUTE	PF_NETLINK /* Alias to emulate 4.4BSD.  */
 94#define	PF_PACKET	17	/* Packet family.  */
 95#define	PF_ASH		18	/* Ash.  */
 96#define	PF_ECONET	19	/* Acorn Econet.  */
 97#define	PF_ATMSVC	20	/* ATM SVCs.  */
 98#define PF_RDS		21	/* RDS sockets.  */
 99#define	PF_SNA		22	/* Linux SNA Project */
100#define	PF_IRDA		23	/* IRDA sockets.  */
101#define	PF_PPPOX	24	/* PPPoX sockets.  */
102#define	PF_WANPIPE	25	/* Wanpipe API sockets.  */
103#define PF_LLC		26	/* Linux LLC.  */
104#define PF_CAN		29	/* Controller Area Network.  */
105#define PF_TIPC		30	/* TIPC sockets.  */
106#define	PF_BLUETOOTH	31	/* Bluetooth sockets.  */
107#define	PF_IUCV		32	/* IUCV sockets.  */
108#define PF_RXRPC	33	/* RxRPC sockets.  */
109#define PF_ISDN		34	/* mISDN sockets.  */
110#define PF_PHONET	35	/* Phonet sockets.  */
111#define PF_IEEE802154	36	/* IEEE 802.15.4 sockets.  */
112#define PF_CAIF		37	/* CAIF sockets.  */
113#define PF_ALG		38	/* Algorithm sockets.  */
114#define	PF_MAX		39	/* For now..  */
115
116/* Address families.  */
117#define	AF_UNSPEC	PF_UNSPEC
118#define	AF_LOCAL	PF_LOCAL
119#define	AF_UNIX		PF_UNIX
120#define	AF_FILE		PF_FILE
121#define	AF_INET		PF_INET
122#define	AF_AX25		PF_AX25
123#define	AF_IPX		PF_IPX
124#define	AF_APPLETALK	PF_APPLETALK
125#define	AF_NETROM	PF_NETROM
126#define	AF_BRIDGE	PF_BRIDGE
127#define	AF_ATMPVC	PF_ATMPVC
128#define	AF_X25		PF_X25
129#define	AF_INET6	PF_INET6
130#define	AF_ROSE		PF_ROSE
131#define	AF_DECnet	PF_DECnet
132#define	AF_NETBEUI	PF_NETBEUI
133#define	AF_SECURITY	PF_SECURITY
134#define	AF_KEY		PF_KEY
135#define	AF_NETLINK	PF_NETLINK
136#define	AF_ROUTE	PF_ROUTE
137#define	AF_PACKET	PF_PACKET
138#define	AF_ASH		PF_ASH
139#define	AF_ECONET	PF_ECONET
140#define	AF_ATMSVC	PF_ATMSVC
141#define AF_RDS		PF_RDS
142#define	AF_SNA		PF_SNA
143#define	AF_IRDA		PF_IRDA
144#define	AF_PPPOX	PF_PPPOX
145#define	AF_WANPIPE	PF_WANPIPE
146#define AF_LLC		PF_LLC
147#define AF_CAN		PF_CAN
148#define AF_TIPC		PF_TIPC
149#define	AF_BLUETOOTH	PF_BLUETOOTH
150#define	AF_IUCV		PF_IUCV
151#define AF_RXRPC	PF_RXRPC
152#define AF_ISDN		PF_ISDN
153#define AF_PHONET	PF_PHONET
154#define AF_IEEE802154	PF_IEEE802154
155#define AF_CAIF		PF_CAIF
156#define AF_ALG		PF_ALG
157#define	AF_MAX		PF_MAX
158
159/* Socket level values.  Others are defined in the appropriate headers.
160
161   XXX These definitions also should go into the appropriate headers as
162   far as they are available.  */
163#define SOL_RAW		255
164#define SOL_DECNET      261
165#define SOL_X25         262
166#define SOL_PACKET	263
167#define SOL_ATM		264	/* ATM layer (cell level).  */
168#define SOL_AAL		265	/* ATM Adaption Layer (packet level).  */
169#define SOL_IRDA	266
170
171/* Maximum queue length specifiable by listen.  */
172#define SOMAXCONN	128
173
174/* Get the definition of the macro to define the common sockaddr members.  */
175#include <bits/sockaddr.h>
176
177/* Structure describing a generic socket address.  */
178struct sockaddr
179  {
180    __SOCKADDR_COMMON (sa_);	/* Common data: address family and length.  */
181    char sa_data[14];		/* Address data.  */
182  };
183
184
185/* Structure large enough to hold any socket address (with the historical
186   exception of AF_UNIX).  We reserve 128 bytes.  */
187#define __ss_aligntype	unsigned long int
188#define _SS_SIZE	128
189#define _SS_PADSIZE	(_SS_SIZE - (2 * sizeof (__ss_aligntype)))
190
191struct sockaddr_storage
192  {
193    __SOCKADDR_COMMON (ss_);	/* Address family, etc.  */
194    __ss_aligntype __ss_align;	/* Force desired alignment.  */
195    char __ss_padding[_SS_PADSIZE];
196  };
197
198
199/* Bits in the FLAGS argument to `send', `recv', et al.  */
200enum
201  {
202    MSG_OOB		= 0x01,	/* Process out-of-band data.  */
203#define MSG_OOB		MSG_OOB
204    MSG_PEEK		= 0x02,	/* Peek at incoming messages.  */
205#define MSG_PEEK	MSG_PEEK
206    MSG_DONTROUTE	= 0x04,	/* Don't use local routing.  */
207#define MSG_DONTROUTE	MSG_DONTROUTE
208#ifdef __USE_GNU
209    /* DECnet uses a different name.  */
210    MSG_TRYHARD		= MSG_DONTROUTE,
211# define MSG_TRYHARD	MSG_DONTROUTE
212#endif
213    MSG_CTRUNC		= 0x08,	/* Control data lost before delivery.  */
214#define MSG_CTRUNC	MSG_CTRUNC
215    MSG_PROXY		= 0x10,	/* Supply or ask second address.  */
216#define MSG_PROXY	MSG_PROXY
217    MSG_TRUNC		= 0x20,
218#define	MSG_TRUNC	MSG_TRUNC
219    MSG_DONTWAIT	= 0x40, /* Nonblocking IO.  */
220#define	MSG_DONTWAIT	MSG_DONTWAIT
221    MSG_EOR		= 0x80, /* End of record.  */
222#define	MSG_EOR		MSG_EOR
223    MSG_WAITALL		= 0x100, /* Wait for a full request.  */
224#define	MSG_WAITALL	MSG_WAITALL
225    MSG_FIN		= 0x200,
226#define	MSG_FIN		MSG_FIN
227    MSG_SYN		= 0x400,
228#define	MSG_SYN		MSG_SYN
229    MSG_CONFIRM		= 0x800, /* Confirm path validity.  */
230#define	MSG_CONFIRM	MSG_CONFIRM
231    MSG_RST		= 0x1000,
232#define	MSG_RST		MSG_RST
233    MSG_ERRQUEUE	= 0x2000, /* Fetch message from error queue.  */
234#define	MSG_ERRQUEUE	MSG_ERRQUEUE
235    MSG_NOSIGNAL	= 0x4000, /* Do not generate SIGPIPE.  */
236#define	MSG_NOSIGNAL	MSG_NOSIGNAL
237    MSG_MORE		= 0x8000,  /* Sender will send more.  */
238#define	MSG_MORE	MSG_MORE
239    MSG_WAITFORONE	= 0x10000, /* Wait for at least one packet to return.*/
240#define MSG_WAITFORONE	MSG_WAITFORONE
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#ifdef __USE_GNU
269/* For `recvmmsg'.  */
270struct mmsghdr
271  {
272    struct msghdr msg_hdr;	/* Actual message header.  */
273    unsigned int msg_len;	/* Number of received bytes for the entry.  */
274  };
275#endif
276
277/* Structure used for storage of ancillary data object information.  */
278struct cmsghdr
279  {
280    size_t cmsg_len;		/* Length of data in cmsg_data plus length
281				   of cmsghdr structure.
282				   !! The type should be socklen_t but the
283				   definition of the kernel is incompatible
284				   with this.  */
285    int cmsg_level;		/* Originating protocol.  */
286    int cmsg_type;		/* Protocol specific type.  */
287#if (!defined __STRICT_ANSI__ && __GNUC__ >= 2) || __STDC_VERSION__ >= 199901L
288    __extension__ unsigned char __cmsg_data __flexarr; /* Ancillary data.  */
289#endif
290  };
291
292/* Ancillary data object manipulation macros.  */
293#if (!defined __STRICT_ANSI__ && __GNUC__ >= 2) || __STDC_VERSION__ >= 199901L
294# define CMSG_DATA(cmsg) ((cmsg)->__cmsg_data)
295#else
296# define CMSG_DATA(cmsg) ((unsigned char *) ((struct cmsghdr *) (cmsg) + 1))
297#endif
298#define CMSG_NXTHDR(mhdr, cmsg) __cmsg_nxthdr (mhdr, cmsg)
299#define CMSG_FIRSTHDR(mhdr) \
300  ((size_t) (mhdr)->msg_controllen >= sizeof (struct cmsghdr)		      \
301   ? (struct cmsghdr *) (mhdr)->msg_control : (struct cmsghdr *) 0)
302#define CMSG_ALIGN(len) (((len) + sizeof (size_t) - 1) \
303			 & (size_t) ~(sizeof (size_t) - 1))
304#define CMSG_SPACE(len) (CMSG_ALIGN (len) \
305			 + CMSG_ALIGN (sizeof (struct cmsghdr)))
306#define CMSG_LEN(len)   (CMSG_ALIGN (sizeof (struct cmsghdr)) + (len))
307
308extern struct cmsghdr *__cmsg_nxthdr (struct msghdr *__mhdr,
309				      struct cmsghdr *__cmsg) __THROW;
310#ifdef __USE_EXTERN_INLINES
311# ifndef _EXTERN_INLINE
312#  define _EXTERN_INLINE __extern_inline
313# endif
314_EXTERN_INLINE struct cmsghdr *
315__NTH (__cmsg_nxthdr (struct msghdr *__mhdr, struct cmsghdr *__cmsg))
316{
317  if ((size_t) __cmsg->cmsg_len < sizeof (struct cmsghdr))
318    /* The kernel header does this so there may be a reason.  */
319    return 0;
320
321  __cmsg = (struct cmsghdr *) ((unsigned char *) __cmsg
322			       + CMSG_ALIGN (__cmsg->cmsg_len));
323  if ((unsigned char *) (__cmsg + 1) > ((unsigned char *) __mhdr->msg_control
324					+ __mhdr->msg_controllen)
325      || ((unsigned char *) __cmsg + CMSG_ALIGN (__cmsg->cmsg_len)
326	  > ((unsigned char *) __mhdr->msg_control + __mhdr->msg_controllen)))
327    /* No more entries.  */
328    return 0;
329  return __cmsg;
330}
331#endif	/* Use `extern inline'.  */
332
333/* Socket level message types.  This must match the definitions in
334   <linux/socket.h>.  */
335enum
336  {
337    SCM_RIGHTS = 0x01		/* Transfer file descriptors.  */
338#define SCM_RIGHTS SCM_RIGHTS
339#ifdef __USE_GNU
340    , SCM_CREDENTIALS = 0x02	/* Credentials passing.  */
341# define SCM_CREDENTIALS SCM_CREDENTIALS
342#endif
343  };
344
345#ifdef __USE_GNU
346/* User visible structure for SCM_CREDENTIALS message */
347struct ucred
348{
349  pid_t pid;			/* PID of sending process.  */
350  uid_t uid;			/* UID of sending process.  */
351  gid_t gid;			/* GID of sending process.  */
352};
353#endif
354
355/* Ugly workaround for unclean kernel headers.  */
356#if !defined __USE_MISC && !defined __USE_GNU
357# ifndef FIOGETOWN
358#  define __SYS_SOCKET_H_undef_FIOGETOWN
359# endif
360# ifndef FIOSETOWN
361#  define __SYS_SOCKET_H_undef_FIOSETOWN
362# endif
363# ifndef SIOCATMARK
364#  define __SYS_SOCKET_H_undef_SIOCATMARK
365# endif
366# ifndef SIOCGPGRP
367#  define __SYS_SOCKET_H_undef_SIOCGPGRP
368# endif
369# ifndef SIOCGSTAMP
370#  define __SYS_SOCKET_H_undef_SIOCGSTAMP
371# endif
372# ifndef SIOCGSTAMPNS
373#  define __SYS_SOCKET_H_undef_SIOCGSTAMPNS
374# endif
375# ifndef SIOCSPGRP
376#  define __SYS_SOCKET_H_undef_SIOCSPGRP
377# endif
378#endif
379
380/* Get socket manipulation related informations from kernel headers.  */
381#include <asm/socket.h>
382
383#if !defined __USE_MISC && !defined __USE_GNU
384# ifdef __SYS_SOCKET_H_undef_FIOGETOWN
385#  undef __SYS_SOCKET_H_undef_FIOGETOWN
386#  undef FIOGETOWN
387# endif
388# ifdef __SYS_SOCKET_H_undef_FIOSETOWN
389#  undef __SYS_SOCKET_H_undef_FIOSETOWN
390#  undef FIOSETOWN
391# endif
392# ifdef __SYS_SOCKET_H_undef_SIOCATMARK
393#  undef __SYS_SOCKET_H_undef_SIOCATMARK
394#  undef SIOCATMARK
395# endif
396# ifdef __SYS_SOCKET_H_undef_SIOCGPGRP
397#  undef __SYS_SOCKET_H_undef_SIOCGPGRP
398#  undef SIOCGPGRP
399# endif
400# ifdef __SYS_SOCKET_H_undef_SIOCGSTAMP
401#  undef __SYS_SOCKET_H_undef_SIOCGSTAMP
402#  undef SIOCGSTAMP
403# endif
404# ifdef __SYS_SOCKET_H_undef_SIOCGSTAMPNS
405#  undef __SYS_SOCKET_H_undef_SIOCGSTAMPNS
406#  undef SIOCGSTAMPNS
407# endif
408# ifdef __SYS_SOCKET_H_undef_SIOCSPGRP
409#  undef __SYS_SOCKET_H_undef_SIOCSPGRP
410#  undef SIOCSPGRP
411# endif
412#endif
413
414/* Structure used to manipulate the SO_LINGER option.  */
415struct linger
416  {
417    int l_onoff;		/* Nonzero to linger on close.  */
418    int l_linger;		/* Time to linger.  */
419  };
420
421
422__BEGIN_DECLS
423
424/* Receive a message as described by MESSAGE from socket FD.
425   Returns the number of bytes read or -1 for errors.
426
427   This function is a cancellation point and therefore not marked with
428   __THROW.  */
429extern int recvmmsg (int __fd, struct mmsghdr *__vmessages,
430		     unsigned int __vlen, int __flags,
431		     __const struct timespec *__tmo);
432
433__END_DECLS
434
435#endif	/* bits/socket.h */