1/*-
2 * Copyright (c) 1982, 1985, 1986, 1988, 1993, 1994
3 *	The Regents of the University of California.  All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 * 4. Neither the name of the University nor the names of its contributors
14 *    may be used to endorse or promote products derived from this software
15 *    without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 *
29 *	@(#)socket.h	8.4 (Berkeley) 2/21/94
30 * $FreeBSD$
31 */
32
33#ifndef _SYS_SOCKET_H_
34#define	_SYS_SOCKET_H_
35
36#include <sys/cdefs.h>
37#include <sys/_types.h>
38#include <sys/_iovec.h>
39#include <machine/_align.h>
40
41/*
42 * Definitions related to sockets: types, address families, options.
43 */
44
45/*
46 * Data types.
47 */
48#if __BSD_VISIBLE
49#ifndef _GID_T_DECLARED
50typedef	__gid_t		gid_t;
51#define	_GID_T_DECLARED
52#endif
53
54#ifndef _OFF_T_DECLARED
55typedef	__off_t		off_t;
56#define	_OFF_T_DECLARED
57#endif
58
59#ifndef _PID_T_DECLARED
60typedef	__pid_t		pid_t;
61#define	_PID_T_DECLARED
62#endif
63#endif
64
65#ifndef _SA_FAMILY_T_DECLARED
66typedef	__sa_family_t	sa_family_t;
67#define	_SA_FAMILY_T_DECLARED
68#endif
69
70#ifndef _SOCKLEN_T_DECLARED
71typedef	__socklen_t	socklen_t;
72#define	_SOCKLEN_T_DECLARED
73#endif
74
75#ifndef _SSIZE_T_DECLARED
76typedef	__ssize_t	ssize_t;
77#define	_SSIZE_T_DECLARED
78#endif
79
80#if __BSD_VISIBLE
81#ifndef _UID_T_DECLARED
82typedef	__uid_t		uid_t;
83#define	_UID_T_DECLARED
84#endif
85#endif
86
87#ifndef _UINT32_T_DECLARED
88typedef	__uint32_t	uint32_t;
89#define	_UINT32_T_DECLARED
90#endif
91
92#ifndef _UINTPTR_T_DECLARED
93typedef	__uintptr_t	uintptr_t;
94#define	_UINTPTR_T_DECLARED
95#endif
96
97/*
98 * Types
99 */
100#define	SOCK_STREAM	1		/* stream socket */
101#define	SOCK_DGRAM	2		/* datagram socket */
102#define	SOCK_RAW	3		/* raw-protocol interface */
103#if __BSD_VISIBLE
104#define	SOCK_RDM	4		/* reliably-delivered message */
105#endif
106#define	SOCK_SEQPACKET	5		/* sequenced packet stream */
107
108#if __BSD_VISIBLE
109/*
110 * Creation flags, OR'ed into socket() and socketpair() type argument.
111 */
112#define	SOCK_CLOEXEC	0x10000000
113#define	SOCK_NONBLOCK	0x20000000
114#endif
115
116/*
117 * Option flags per-socket.
118 */
119#define	SO_DEBUG	0x0001		/* turn on debugging info recording */
120#define	SO_ACCEPTCONN	0x0002		/* socket has had listen() */
121#define	SO_REUSEADDR	0x0004		/* allow local address reuse */
122#define	SO_KEEPALIVE	0x0008		/* keep connections alive */
123#define	SO_DONTROUTE	0x0010		/* just use interface addresses */
124#define	SO_BROADCAST	0x0020		/* permit sending of broadcast msgs */
125#if __BSD_VISIBLE
126#define	SO_USELOOPBACK	0x0040		/* bypass hardware when possible */
127#endif
128#define	SO_LINGER	0x0080		/* linger on close if data present */
129#define	SO_OOBINLINE	0x0100		/* leave received OOB data in line */
130#if __BSD_VISIBLE
131#define	SO_REUSEPORT	0x0200		/* allow local address & port reuse */
132#define	SO_TIMESTAMP	0x0400		/* timestamp received dgram traffic */
133#define	SO_NOSIGPIPE	0x0800		/* no SIGPIPE from EPIPE */
134#define	SO_ACCEPTFILTER	0x1000		/* there is an accept filter */
135#define	SO_BINTIME	0x2000		/* timestamp received dgram traffic */
136#endif
137#define	SO_NO_OFFLOAD	0x4000		/* socket cannot be offloaded */
138#define	SO_NO_DDP	0x8000		/* disable direct data placement */
139
140/*
141 * Additional options, not kept in so_options.
142 */
143#define	SO_SNDBUF	0x1001		/* send buffer size */
144#define	SO_RCVBUF	0x1002		/* receive buffer size */
145#define	SO_SNDLOWAT	0x1003		/* send low-water mark */
146#define	SO_RCVLOWAT	0x1004		/* receive low-water mark */
147#define	SO_SNDTIMEO	0x1005		/* send timeout */
148#define	SO_RCVTIMEO	0x1006		/* receive timeout */
149#define	SO_ERROR	0x1007		/* get error status and clear */
150#define	SO_TYPE		0x1008		/* get socket type */
151#if __BSD_VISIBLE
152#define	SO_LABEL	0x1009		/* socket's MAC label */
153#define	SO_PEERLABEL	0x1010		/* socket's peer's MAC label */
154#define	SO_LISTENQLIMIT	0x1011		/* socket's backlog limit */
155#define	SO_LISTENQLEN	0x1012		/* socket's complete queue length */
156#define	SO_LISTENINCQLEN	0x1013	/* socket's incomplete queue length */
157#define	SO_SETFIB	0x1014		/* use this FIB to route */
158#define	SO_USER_COOKIE	0x1015		/* user cookie (dummynet etc.) */
159#define	SO_PROTOCOL	0x1016		/* get socket protocol (Linux name) */
160#define	SO_PROTOTYPE	SO_PROTOCOL	/* alias for SO_PROTOCOL (SunOS name) */
161#endif
162
163/*
164 * Space reserved for new socket options added by third-party vendors.
165 * This range applies to all socket option levels.  New socket options
166 * in FreeBSD should always use an option value less than SO_VENDOR.
167 */
168#if __BSD_VISIBLE
169#define	SO_VENDOR	0x80000000
170#endif
171
172/*
173 * Structure used for manipulating linger option.
174 */
175struct linger {
176	int	l_onoff;		/* option on/off */
177	int	l_linger;		/* linger time */
178};
179
180#if __BSD_VISIBLE
181struct accept_filter_arg {
182	char	af_name[16];
183	char	af_arg[256-16];
184};
185#endif
186
187/*
188 * Level number for (get/set)sockopt() to apply to socket itself.
189 */
190#define	SOL_SOCKET	0xffff		/* options for socket level */
191
192/*
193 * Address families.
194 */
195#define	AF_UNSPEC	0		/* unspecified */
196#if __BSD_VISIBLE
197#define	AF_LOCAL	AF_UNIX		/* local to host (pipes, portals) */
198#endif
199#define	AF_UNIX		1		/* standardized name for AF_LOCAL */
200#define	AF_INET		2		/* internetwork: UDP, TCP, etc. */
201#if __BSD_VISIBLE
202#define	AF_IMPLINK	3		/* arpanet imp addresses */
203#define	AF_PUP		4		/* pup protocols: e.g. BSP */
204#define	AF_CHAOS	5		/* mit CHAOS protocols */
205#define	AF_NETBIOS	6		/* SMB protocols */
206#define	AF_ISO		7		/* ISO protocols */
207#define	AF_OSI		AF_ISO
208#define	AF_ECMA		8		/* European computer manufacturers */
209#define	AF_DATAKIT	9		/* datakit protocols */
210#define	AF_CCITT	10		/* CCITT protocols, X.25 etc */
211#define	AF_SNA		11		/* IBM SNA */
212#define AF_DECnet	12		/* DECnet */
213#define AF_DLI		13		/* DEC Direct data link interface */
214#define AF_LAT		14		/* LAT */
215#define	AF_HYLINK	15		/* NSC Hyperchannel */
216#define	AF_APPLETALK	16		/* Apple Talk */
217#define	AF_ROUTE	17		/* Internal Routing Protocol */
218#define	AF_LINK		18		/* Link layer interface */
219#define	pseudo_AF_XTP	19		/* eXpress Transfer Protocol (no AF) */
220#define	AF_COIP		20		/* connection-oriented IP, aka ST II */
221#define	AF_CNT		21		/* Computer Network Technology */
222#define pseudo_AF_RTIP	22		/* Help Identify RTIP packets */
223#define	AF_IPX		23		/* Novell Internet Protocol */
224#define	AF_SIP		24		/* Simple Internet Protocol */
225#define	pseudo_AF_PIP	25		/* Help Identify PIP packets */
226#define	AF_ISDN		26		/* Integrated Services Digital Network*/
227#define	AF_E164		AF_ISDN		/* CCITT E.164 recommendation */
228#define	pseudo_AF_KEY	27		/* Internal key-management function */
229#endif
230#define	AF_INET6	28		/* IPv6 */
231#if __BSD_VISIBLE
232#define	AF_NATM		29		/* native ATM access */
233#define	AF_ATM		30		/* ATM */
234#define pseudo_AF_HDRCMPLT 31		/* Used by BPF to not rewrite headers
235					 * in interface output routine
236					 */
237#define	AF_NETGRAPH	32		/* Netgraph sockets */
238#define	AF_SLOW		33		/* 802.3ad slow protocol */
239#define	AF_SCLUSTER	34		/* Sitara cluster protocol */
240#define	AF_ARP		35
241#define	AF_BLUETOOTH	36		/* Bluetooth sockets */
242#define	AF_IEEE80211	37		/* IEEE 802.11 protocol */
243#define	AF_INET_SDP	40		/* OFED Socket Direct Protocol ipv4 */
244#define	AF_INET6_SDP	42		/* OFED Socket Direct Protocol ipv6 */
245#define	AF_MAX		42
246/*
247 * When allocating a new AF_ constant, please only allocate
248 * even numbered constants for FreeBSD until 134 as odd numbered AF_
249 * constants 39-133 are now reserved for vendors.
250 */
251#define AF_VENDOR00 39
252#define AF_VENDOR01 41
253#define AF_VENDOR02 43
254#define AF_VENDOR03 45
255#define AF_VENDOR04 47
256#define AF_VENDOR05 49
257#define AF_VENDOR06 51
258#define AF_VENDOR07 53
259#define AF_VENDOR08 55
260#define AF_VENDOR09 57
261#define AF_VENDOR10 59
262#define AF_VENDOR11 61
263#define AF_VENDOR12 63
264#define AF_VENDOR13 65
265#define AF_VENDOR14 67
266#define AF_VENDOR15 69
267#define AF_VENDOR16 71
268#define AF_VENDOR17 73
269#define AF_VENDOR18 75
270#define AF_VENDOR19 77
271#define AF_VENDOR20 79
272#define AF_VENDOR21 81
273#define AF_VENDOR22 83
274#define AF_VENDOR23 85
275#define AF_VENDOR24 87
276#define AF_VENDOR25 89
277#define AF_VENDOR26 91
278#define AF_VENDOR27 93
279#define AF_VENDOR28 95
280#define AF_VENDOR29 97
281#define AF_VENDOR30 99
282#define AF_VENDOR31 101
283#define AF_VENDOR32 103
284#define AF_VENDOR33 105
285#define AF_VENDOR34 107
286#define AF_VENDOR35 109
287#define AF_VENDOR36 111
288#define AF_VENDOR37 113
289#define AF_VENDOR38 115
290#define AF_VENDOR39 117
291#define AF_VENDOR40 119
292#define AF_VENDOR41 121
293#define AF_VENDOR42 123
294#define AF_VENDOR43 125
295#define AF_VENDOR44 127
296#define AF_VENDOR45 129
297#define AF_VENDOR46 131
298#define AF_VENDOR47 133
299#endif
300
301/*
302 * Structure used by kernel to store most
303 * addresses.
304 */
305struct sockaddr {
306	unsigned char	sa_len;		/* total length */
307	sa_family_t	sa_family;	/* address family */
308	char		sa_data[14];	/* actually longer; address value */
309};
310#if __BSD_VISIBLE
311#define	SOCK_MAXADDRLEN	255		/* longest possible addresses */
312
313/*
314 * Structure used by kernel to pass protocol
315 * information in raw sockets.
316 */
317struct sockproto {
318	unsigned short	sp_family;		/* address family */
319	unsigned short	sp_protocol;		/* protocol */
320};
321#endif
322
323#include <sys/_sockaddr_storage.h>
324
325#if __BSD_VISIBLE
326/*
327 * Protocol families, same as address families for now.
328 */
329#define	PF_UNSPEC	AF_UNSPEC
330#define	PF_LOCAL	AF_LOCAL
331#define	PF_UNIX		PF_LOCAL	/* backward compatibility */
332#define	PF_INET		AF_INET
333#define	PF_IMPLINK	AF_IMPLINK
334#define	PF_PUP		AF_PUP
335#define	PF_CHAOS	AF_CHAOS
336#define	PF_NETBIOS	AF_NETBIOS
337#define	PF_ISO		AF_ISO
338#define	PF_OSI		AF_ISO
339#define	PF_ECMA		AF_ECMA
340#define	PF_DATAKIT	AF_DATAKIT
341#define	PF_CCITT	AF_CCITT
342#define	PF_SNA		AF_SNA
343#define PF_DECnet	AF_DECnet
344#define PF_DLI		AF_DLI
345#define PF_LAT		AF_LAT
346#define	PF_HYLINK	AF_HYLINK
347#define	PF_APPLETALK	AF_APPLETALK
348#define	PF_ROUTE	AF_ROUTE
349#define	PF_LINK		AF_LINK
350#define	PF_XTP		pseudo_AF_XTP	/* really just proto family, no AF */
351#define	PF_COIP		AF_COIP
352#define	PF_CNT		AF_CNT
353#define	PF_SIP		AF_SIP
354#define	PF_IPX		AF_IPX
355#define PF_RTIP		pseudo_AF_RTIP	/* same format as AF_INET */
356#define PF_PIP		pseudo_AF_PIP
357#define	PF_ISDN		AF_ISDN
358#define	PF_KEY		pseudo_AF_KEY
359#define	PF_INET6	AF_INET6
360#define	PF_NATM		AF_NATM
361#define	PF_ATM		AF_ATM
362#define	PF_NETGRAPH	AF_NETGRAPH
363#define	PF_SLOW		AF_SLOW
364#define PF_SCLUSTER	AF_SCLUSTER
365#define	PF_ARP		AF_ARP
366#define	PF_BLUETOOTH	AF_BLUETOOTH
367#define	PF_IEEE80211	AF_IEEE80211
368#define	PF_INET_SDP	AF_INET_SDP
369#define	PF_INET6_SDP	AF_INET6_SDP
370
371#define	PF_MAX		AF_MAX
372
373/*
374 * Definitions for network related sysctl, CTL_NET.
375 *
376 * Second level is protocol family.
377 * Third level is protocol number.
378 *
379 * Further levels are defined by the individual families.
380 */
381
382/*
383 * PF_ROUTE - Routing table
384 *
385 * Three additional levels are defined:
386 *	Fourth: address family, 0 is wildcard
387 *	Fifth: type of info, defined below
388 *	Sixth: flag(s) to mask with for NET_RT_FLAGS
389 */
390#define NET_RT_DUMP	1		/* dump; may limit to a.f. */
391#define NET_RT_FLAGS	2		/* by flags, e.g. RESOLVING */
392#define NET_RT_IFLIST	3		/* survey interface list */
393#define	NET_RT_IFMALIST	4		/* return multicast address list */
394#define	NET_RT_IFLISTL	5		/* Survey interface list, using 'l'en
395					 * versions of msghdr structs. */
396#endif /* __BSD_VISIBLE */
397
398/*
399 * Maximum queue length specifiable by listen.
400 */
401#define	SOMAXCONN	128
402
403/*
404 * Message header for recvmsg and sendmsg calls.
405 * Used value-result for recvmsg, value only for sendmsg.
406 */
407struct msghdr {
408	void		*msg_name;		/* optional address */
409	socklen_t	 msg_namelen;		/* size of address */
410	struct iovec	*msg_iov;		/* scatter/gather array */
411	int		 msg_iovlen;		/* # elements in msg_iov */
412	void		*msg_control;		/* ancillary data, see below */
413	socklen_t	 msg_controllen;	/* ancillary data buffer len */
414	int		 msg_flags;		/* flags on received message */
415};
416
417#define	MSG_OOB		0x1		/* process out-of-band data */
418#define	MSG_PEEK	0x2		/* peek at incoming message */
419#define	MSG_DONTROUTE	0x4		/* send without using routing tables */
420#define	MSG_EOR		0x8		/* data completes record */
421#define	MSG_TRUNC	0x10		/* data discarded before delivery */
422#define	MSG_CTRUNC	0x20		/* control data lost before delivery */
423#define	MSG_WAITALL	0x40		/* wait for full request or error */
424#if __POSIX_VISIBLE >= 200809
425#define	MSG_NOSIGNAL	0x20000		/* do not generate SIGPIPE on EOF */
426#endif
427#if __BSD_VISIBLE
428#define	MSG_DONTWAIT	0x80		/* this message should be nonblocking */
429#define	MSG_EOF		0x100		/* data completes connection */
430#define	MSG_NOTIFICATION 0x2000         /* SCTP notification */
431#define	MSG_NBIO	0x4000		/* FIONBIO mode, used by fifofs */
432#define	MSG_COMPAT      0x8000		/* used in sendit() */
433#define	MSG_CMSG_CLOEXEC 0x40000	/* make received fds close-on-exec */
434#define	MSG_WAITFORONE	0x80000		/* for recvmmsg() */
435#endif
436#ifdef _KERNEL
437#define	MSG_SOCALLBCK   0x10000		/* for use by socket callbacks - soreceive (TCP) */
438#endif
439
440/*
441 * Header for ancillary data objects in msg_control buffer.
442 * Used for additional information with/about a datagram
443 * not expressible by flags.  The format is a sequence
444 * of message elements headed by cmsghdr structures.
445 */
446struct cmsghdr {
447	socklen_t	cmsg_len;		/* data byte count, including hdr */
448	int		cmsg_level;		/* originating protocol */
449	int		cmsg_type;		/* protocol-specific type */
450/* followed by	u_char  cmsg_data[]; */
451};
452
453#if __BSD_VISIBLE
454/*
455 * While we may have more groups than this, the cmsgcred struct must
456 * be able to fit in an mbuf and we have historically supported a
457 * maximum of 16 groups.
458*/
459#define CMGROUP_MAX 16
460
461/*
462 * Credentials structure, used to verify the identity of a peer
463 * process that has sent us a message. This is allocated by the
464 * peer process but filled in by the kernel. This prevents the
465 * peer from lying about its identity. (Note that cmcred_groups[0]
466 * is the effective GID.)
467 */
468struct cmsgcred {
469	pid_t	cmcred_pid;		/* PID of sending process */
470	uid_t	cmcred_uid;		/* real UID of sending process */
471	uid_t	cmcred_euid;		/* effective UID of sending process */
472	gid_t	cmcred_gid;		/* real GID of sending process */
473	short	cmcred_ngroups;		/* number or groups */
474	gid_t	cmcred_groups[CMGROUP_MAX];	/* groups */
475};
476
477/*
478 * Socket credentials.
479 */
480struct sockcred {
481	uid_t	sc_uid;			/* real user id */
482	uid_t	sc_euid;		/* effective user id */
483	gid_t	sc_gid;			/* real group id */
484	gid_t	sc_egid;		/* effective group id */
485	int	sc_ngroups;		/* number of supplemental groups */
486	gid_t	sc_groups[1];		/* variable length */
487};
488
489/*
490 * Compute size of a sockcred structure with groups.
491 */
492#define	SOCKCREDSIZE(ngrps) \
493	(sizeof(struct sockcred) + (sizeof(gid_t) * ((ngrps) - 1)))
494
495#endif /* __BSD_VISIBLE */
496
497/* given pointer to struct cmsghdr, return pointer to data */
498#define	CMSG_DATA(cmsg)		((unsigned char *)(cmsg) + \
499				 _ALIGN(sizeof(struct cmsghdr)))
500
501/* given pointer to struct cmsghdr, return pointer to next cmsghdr */
502#define	CMSG_NXTHDR(mhdr, cmsg)	\
503	((char *)(cmsg) == NULL ? CMSG_FIRSTHDR(mhdr) : \
504	    ((char *)(cmsg) + _ALIGN(((struct cmsghdr *)(cmsg))->cmsg_len) + \
505	  _ALIGN(sizeof(struct cmsghdr)) > \
506	    (char *)(mhdr)->msg_control + (mhdr)->msg_controllen) ? \
507	    (struct cmsghdr *)0 : \
508	    (struct cmsghdr *)(void *)((char *)(cmsg) + \
509	    _ALIGN(((struct cmsghdr *)(cmsg))->cmsg_len)))
510
511/*
512 * RFC 2292 requires to check msg_controllen, in case that the kernel returns
513 * an empty list for some reasons.
514 */
515#define	CMSG_FIRSTHDR(mhdr) \
516	((mhdr)->msg_controllen >= sizeof(struct cmsghdr) ? \
517	 (struct cmsghdr *)(mhdr)->msg_control : \
518	 (struct cmsghdr *)NULL)
519
520#if __BSD_VISIBLE
521/* RFC 2292 additions */
522#define	CMSG_SPACE(l)		(_ALIGN(sizeof(struct cmsghdr)) + _ALIGN(l))
523#define	CMSG_LEN(l)		(_ALIGN(sizeof(struct cmsghdr)) + (l))
524#endif
525
526#ifdef _KERNEL
527#define	CMSG_ALIGN(n)	_ALIGN(n)
528#endif
529
530/* "Socket"-level control message types: */
531#define	SCM_RIGHTS	0x01		/* access rights (array of int) */
532#if __BSD_VISIBLE
533#define	SCM_TIMESTAMP	0x02		/* timestamp (struct timeval) */
534#define	SCM_CREDS	0x03		/* process creds (struct cmsgcred) */
535#define	SCM_BINTIME	0x04		/* timestamp (struct bintime) */
536#endif
537
538#if __BSD_VISIBLE
539/*
540 * 4.3 compat sockaddr, move to compat file later
541 */
542struct osockaddr {
543	unsigned short sa_family;	/* address family */
544	char	sa_data[14];		/* up to 14 bytes of direct address */
545};
546
547/*
548 * 4.3-compat message header (move to compat file later).
549 */
550struct omsghdr {
551	char	*msg_name;		/* optional address */
552	int	msg_namelen;		/* size of address */
553	struct	iovec *msg_iov;		/* scatter/gather array */
554	int	msg_iovlen;		/* # elements in msg_iov */
555	char	*msg_accrights;		/* access rights sent/received */
556	int	msg_accrightslen;
557};
558#endif
559
560/*
561 * howto arguments for shutdown(2), specified by Posix.1g.
562 */
563#define	SHUT_RD		0		/* shut down the reading side */
564#define	SHUT_WR		1		/* shut down the writing side */
565#define	SHUT_RDWR	2		/* shut down both sides */
566
567#if __BSD_VISIBLE
568/* for SCTP */
569/* we cheat and use the SHUT_XX defines for these */
570#define PRU_FLUSH_RD     SHUT_RD
571#define PRU_FLUSH_WR     SHUT_WR
572#define PRU_FLUSH_RDWR   SHUT_RDWR
573#endif
574
575
576#if __BSD_VISIBLE
577/*
578 * sendfile(2) header/trailer struct
579 */
580struct sf_hdtr {
581	struct iovec *headers;	/* pointer to an array of header struct iovec's */
582	int hdr_cnt;		/* number of header iovec's */
583	struct iovec *trailers;	/* pointer to an array of trailer struct iovec's */
584	int trl_cnt;		/* number of trailer iovec's */
585};
586
587/*
588 * Sendfile-specific flag(s)
589 */
590#define	SF_NODISKIO     0x00000001
591#define	SF_MNOWAIT	0x00000002	/* obsolete */
592#define	SF_SYNC		0x00000004
593#define	SF_NOCACHE	0x00000010
594#define	SF_FLAGS(rh, flags)	(((rh) << 16) | (flags))
595
596#ifdef _KERNEL
597#define	SFK_COMPAT	0x00000001
598#define	SF_READAHEAD(flags)	((flags) >> 16)
599#endif /* _KERNEL */
600
601/*
602 * Sendmmsg/recvmmsg specific structure(s)
603 */
604struct mmsghdr {
605	struct msghdr	msg_hdr;		/* message header */
606	ssize_t		msg_len;		/* message length */
607};
608#endif /* __BSD_VISIBLE */
609
610#ifndef	_KERNEL
611
612#include <sys/cdefs.h>
613
614__BEGIN_DECLS
615int	accept(int, struct sockaddr * __restrict, socklen_t * __restrict);
616int	bind(int, const struct sockaddr *, socklen_t);
617int	connect(int, const struct sockaddr *, socklen_t);
618#if __BSD_VISIBLE
619int	accept4(int, struct sockaddr * __restrict, socklen_t * __restrict, int);
620int	bindat(int, int, const struct sockaddr *, socklen_t);
621int	connectat(int, int, const struct sockaddr *, socklen_t);
622#endif
623int	getpeername(int, struct sockaddr * __restrict, socklen_t * __restrict);
624int	getsockname(int, struct sockaddr * __restrict, socklen_t * __restrict);
625int	getsockopt(int, int, int, void * __restrict, socklen_t * __restrict);
626int	listen(int, int);
627ssize_t	recv(int, void *, size_t, int);
628ssize_t	recvfrom(int, void *, size_t, int, struct sockaddr * __restrict, socklen_t * __restrict);
629ssize_t	recvmsg(int, struct msghdr *, int);
630#if __BSD_VISIBLE
631struct timespec;
632ssize_t	recvmmsg(int, struct mmsghdr * __restrict, size_t, int,
633    const struct timespec * __restrict);
634#endif
635ssize_t	send(int, const void *, size_t, int);
636ssize_t	sendto(int, const void *,
637	    size_t, int, const struct sockaddr *, socklen_t);
638ssize_t	sendmsg(int, const struct msghdr *, int);
639#if __BSD_VISIBLE
640int	sendfile(int, int, off_t, size_t, struct sf_hdtr *, off_t *, int);
641ssize_t	sendmmsg(int, struct mmsghdr * __restrict, size_t, int);
642int	setfib(int);
643#endif
644int	setsockopt(int, int, int, const void *, socklen_t);
645int	shutdown(int, int);
646int	sockatmark(int);
647int	socket(int, int, int);
648int	socketpair(int, int, int, int *);
649__END_DECLS
650
651#endif /* !_KERNEL */
652
653#ifdef _KERNEL
654struct socket;
655
656struct tcpcb *so_sototcpcb(struct socket *so);
657struct inpcb *so_sotoinpcb(struct socket *so);
658struct sockbuf *so_sockbuf_snd(struct socket *);
659struct sockbuf *so_sockbuf_rcv(struct socket *);
660
661int so_state_get(const struct socket *);
662void so_state_set(struct socket *, int);
663
664int so_options_get(const struct socket *);
665void so_options_set(struct socket *, int);
666
667int so_error_get(const struct socket *);
668void so_error_set(struct socket *, int);
669
670int so_linger_get(const struct socket *);
671void so_linger_set(struct socket *, int);
672
673struct protosw *so_protosw_get(const struct socket *);
674void so_protosw_set(struct socket *, struct protosw *);
675
676void so_sorwakeup_locked(struct socket *so);
677void so_sowwakeup_locked(struct socket *so);
678
679void so_sorwakeup(struct socket *so);
680void so_sowwakeup(struct socket *so);
681
682void so_lock(struct socket *so);
683void so_unlock(struct socket *so);
684
685void so_listeners_apply_all(struct socket *so, void (*func)(struct socket *, void *), void *arg);
686
687#endif
688
689
690#endif /* !_SYS_SOCKET_H_ */
691