/*
* Copyright (c) 1982, 1985, 1986, 1988, 1993, 1994
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* @(#)socket.h 8.4 (Berkeley) 2/21/94
* $FreeBSD: src/sys/sys/socket.h,v 1.60 2002/04/20 02:24:35 mike Exp $
*/
#ifndef _SYS_SOCKET_H_
#define _SYS_SOCKET_H_
#include <sys/types.h>
#include <sys/_types.h>
#include <netinet/in.h>
#include <netdb.h>
/* Needed by linuxthreads. */
# define __SOCKADDR_ARG struct sockaddr *__restrict
# define __CONST_SOCKADDR_ARG __const struct sockaddr *
/*
* Definitions related to sockets: types, address families, options.
*/
/*
* Data types.
*/
#ifdef _BSD_SA_FAMILY_T_
typedef _BSD_SA_FAMILY_T_ sa_family_t;
#undef _BSD_SA_FAMILY_T_
#endif
#ifdef _BSD_SOCKLEN_T_
typedef _BSD_SOCKLEN_T_ socklen_t;
#undef _BSD_SOCKLEN_T_
#endif
/*
* Types
*/
#define SOCK_STREAM 1 /* stream socket */
#define SOCK_DGRAM 2 /* datagram socket */
#define SOCK_RAW 3 /* raw-protocol interface */
#define SOCK_RDM 4 /* reliably-delivered message */
#define SOCK_SEQPACKET 5 /* sequenced packet stream */
/* Socket type flags that can be or'd with the above types */
#define SOCK_CLOEXEC 0x100
#define SOCK_NONBLOCK 0x200
/*
* Option flags per-socket.
*/
#define SO_DEBUG 0x0001 /* turn on debugging info recording */
#define SO_ACCEPTCONN 0x0002 /* socket has had listen() */
#define SO_REUSEADDR 0x0004 /* allow local address reuse */
#define SO_KEEPALIVE 0x0008 /* keep connections alive */
#define SO_DONTROUTE 0x0010 /* just use interface addresses */
#define SO_BROADCAST 0x0020 /* permit sending of broadcast msgs */
#define SO_USELOOPBACK 0x0040 /* bypass hardware when possible */
#define SO_LINGER 0x0080 /* linger on close if data present */
#define SO_OOBINLINE 0x0100 /* leave received OOB data in line */
#define SO_REUSEPORT 0x0200 /* allow local address & port reuse */
#define SO_TIMESTAMP 0x0400 /* timestamp received dgram traffic */
#define SO_ACCEPTFILTER 0x1000 /* there is an accept filter */
/*
* Additional options, not kept in so_options.
*/
#define SO_SNDBUF 0x1001 /* send buffer size */
#define SO_RCVBUF 0x1002 /* receive buffer size */
#define SO_SNDLOWAT 0x1003 /* send low-water mark */
#define SO_RCVLOWAT 0x1004 /* receive low-water mark */
#define SO_SNDTIMEO 0x1005 /* send timeout */
#define SO_RCVTIMEO 0x1006 /* receive timeout */
#define SO_ERROR 0x1007 /* get error status and clear */
#define SO_TYPE 0x1008 /* get socket type */
/*efine SO_PRIVSTATE 0x1009 get/deny privileged state */
/*
* Structure used for manipulating linger option.
*/
struct linger {
int l_onoff; /* option on/off */
int l_linger; /* linger time */
};
struct accept_filter_arg {
char af_name[16];
char af_arg[256-16];
};
/*
* Level number for (get/set)sockopt() to apply to socket itself.
*/
#define SOL_SOCKET 0xffff /* options for socket level */
/* Protocol families. */
#define PF_UNSPEC 0 /* Unspecified. */
#define PF_LOCAL 1 /* Local to host (pipes and file-domain). */
#define PF_UNIX PF_LOCAL /* Old BSD name for PF_LOCAL. */
#define PF_FILE PF_LOCAL /* Another non-standard name for PF_LOCAL. */
#define PF_INET 2 /* IP protocol family. */
#define PF_AX25 3 /* Amateur Radio AX.25. */
#define PF_IPX 4 /* Novell Internet Protocol. */
#define PF_APPLETALK 5 /* Appletalk DDP. */
#define PF_NETROM 6 /* Amateur radio NetROM. */
#define PF_BRIDGE 7 /* Multiprotocol bridge. */
#define PF_ATMPVC 8 /* ATM PVCs. */
#define PF_X25 9 /* Reserved for X.25 project. */
#define PF_INET6 10 /* IP version 6. */
#define PF_ROSE 11 /* Amateur Radio X.25 PLP. */
#define PF_DECnet 12 /* Reserved for DECnet project. */
#define PF_NETBEUI 13 /* Reserved for 802.2LLC project. */
#define PF_SECURITY 14 /* Security callback pseudo AF. */
#define PF_KEY 15 /* PF_KEY key management API. */
#define PF_NETLINK 16
#define PF_ROUTE PF_NETLINK /* Alias to emulate 4.4BSD. */
#define PF_PACKET 17 /* Packet family. */
#define PF_ASH 18 /* Ash. */
#define PF_ECONET 19 /* Acorn Econet. */
#define PF_ATMSVC 20 /* ATM SVCs. */
#define PF_SNA 22 /* Linux SNA Project */
#define PF_IRDA 23 /* IRDA sockets. */
#define PF_PPPOX 24 /* PPPoX sockets. */
#define PF_WANPIPE 25 /* Wanpipe API sockets. */
#define PF_BLUETOOTH 31 /* Bluetooth sockets. */
#define PF_MAX 32 /* For now.. */
/* Address families. */
#define AF_UNSPEC PF_UNSPEC
#define AF_LOCAL PF_LOCAL
#define AF_UNIX PF_UNIX
#define AF_FILE PF_FILE
#define AF_INET PF_INET
#define AF_AX25 PF_AX25
#define AF_IPX PF_IPX
#define AF_APPLETALK PF_APPLETALK
#define AF_NETROM PF_NETROM
#define AF_BRIDGE PF_BRIDGE
#define AF_ATMPVC PF_ATMPVC
#define AF_X25 PF_X25
#define AF_INET6 PF_INET6
#define AF_ROSE PF_ROSE
#define AF_DECnet PF_DECnet
#define AF_NETBEUI PF_NETBEUI
#define AF_SECURITY PF_SECURITY
#define AF_KEY PF_KEY
#define AF_NETLINK PF_NETLINK
#define AF_ROUTE PF_ROUTE
#define AF_PACKET PF_PACKET
#define AF_ASH PF_ASH
#define AF_ECONET PF_ECONET
#define AF_ATMSVC PF_ATMSVC
#define AF_SNA PF_SNA
#define AF_IRDA PF_IRDA
#define AF_PPPOX PF_PPPOX
#define AF_WANPIPE PF_WANPIPE
#define AF_BLUETOOTH PF_BLUETOOTH
#define AF_MAX PF_MAX
/*
* Structure used by kernel to store most
* addresses.
*/
struct sockaddr {
sa_family_t sa_family; /* address family */
char sa_data[14]; /* actually longer; address value */
};
#define SOCK_MAXADDRLEN 255 /* longest possible addresses */
/*
* Structure used by kernel to pass protocol
* information in raw sockets.
*/
struct sockproto {
u_short sp_family; /* address family */
u_short sp_protocol; /* protocol */
};
/*
* RFC 2553: protocol-independent placeholder for socket addresses
*/
#define _SS_MAXSIZE 128U
#define _SS_ALIGNSIZE (sizeof(int64_t))
#define _SS_PAD1SIZE (_SS_ALIGNSIZE - sizeof(unsigned char) - sizeof(sa_family_t))
#define _SS_PAD2SIZE (_SS_MAXSIZE - sizeof(unsigned char) - sizeof(sa_family_t) - \
_SS_PAD1SIZE - _SS_ALIGNSIZE)
struct sockaddr_storage {
sa_family_t ss_family; /* address family */
char __ss_pad1[_SS_PAD1SIZE];
int64_t __ss_align; /* force desired structure storage alignment */
char __ss_pad2[_SS_PAD2SIZE];
};
/*
* Definitions for network related sysctl, CTL_NET.
*
* Second level is protocol family.
* Third level is protocol number.
*
* Further levels are defined by the individual families below.
*/
#define NET_MAXID AF_MAX
#define CTL_NET_NAMES { \
{ 0, 0 }, \
{ "unix", CTLTYPE_NODE }, \
{ "inet", CTLTYPE_NODE }, \
{ "implink", CTLTYPE_NODE }, \
{ "pup", CTLTYPE_NODE }, \
{ "chaos", CTLTYPE_NODE }, \
{ "xerox_ns", CTLTYPE_NODE }, \
{ "iso", CTLTYPE_NODE }, \
{ "emca", CTLTYPE_NODE }, \
{ "datakit", CTLTYPE_NODE }, \
{ "ccitt", CTLTYPE_NODE }, \
{ "ibm_sna", CTLTYPE_NODE }, \
{ "decnet", CTLTYPE_NODE }, \
{ "dec_dli", CTLTYPE_NODE }, \
{ "lat", CTLTYPE_NODE }, \
{ "hylink", CTLTYPE_NODE }, \
{ "appletalk", CTLTYPE_NODE }, \
{ "route", CTLTYPE_NODE }, \
{ "link_layer", CTLTYPE_NODE }, \
{ "xtp", CTLTYPE_NODE }, \
{ "coip", CTLTYPE_NODE }, \
{ "cnt", CTLTYPE_NODE }, \
{ "rtip", CTLTYPE_NODE }, \
{ "ipx", CTLTYPE_NODE }, \
{ "sip", CTLTYPE_NODE }, \
{ "pip", CTLTYPE_NODE }, \
{ "isdn", CTLTYPE_NODE }, \
{ "key", CTLTYPE_NODE }, \
{ "inet6", CTLTYPE_NODE }, \
{ "natm", CTLTYPE_NODE }, \
{ "atm", CTLTYPE_NODE }, \
{ "hdrcomplete", CTLTYPE_NODE }, \
{ "netgraph", CTLTYPE_NODE }, \
{ "snp", CTLTYPE_NODE }, \
{ "scp", CTLTYPE_NODE }, \
}
/*
* PF_ROUTE - Routing table
*
* Three additional levels are defined:
* Fourth: address family, 0 is wildcard
* Fifth: type of info, defined below
* Sixth: flag(s) to mask with for NET_RT_FLAGS
*/
#define NET_RT_DUMP 1 /* dump; may limit to a.f. */
#define NET_RT_FLAGS 2 /* by flags, e.g. RESOLVING */
#define NET_RT_IFLIST 3 /* survey interface list */
#define NET_RT_MAXID 4
#define CTL_NET_RT_NAMES { \
{ 0, 0 }, \
{ "dump", CTLTYPE_STRUCT }, \
{ "flags", CTLTYPE_STRUCT }, \
{ "iflist", CTLTYPE_STRUCT }, \
}
/*
* Maximum queue length specifiable by listen.
*/
#ifndef SOMAXCONN
#define SOMAXCONN 128
#endif
/*
* Message header for recvmsg and sendmsg calls.
* Used value-result for recvmsg, value only for sendmsg.
*/
struct msghdr {
void *msg_name; /* optional address */
socklen_t msg_namelen; /* size of address */
struct iovec *msg_iov; /* scatter/gather array */
int msg_iovlen; /* # elements in msg_iov */
void *msg_control; /* ancillary data, see below */
socklen_t msg_controllen; /* ancillary data buffer len */
int msg_flags; /* flags on received message */
};
#define MSG_OOB 0x1 /* process out-of-band data */
#define MSG_PEEK 0x2 /* peek at incoming message */
#define MSG_DONTROUTE 0x4 /* send without using routing tables */
#define MSG_EOR 0x8 /* data completes record */
#define MSG_TRUNC 0x10 /* data discarded before delivery */
#define MSG_CTRUNC 0x20 /* control data lost before delivery */
#define MSG_WAITALL 0x40 /* wait for full request or error */
#define MSG_DONTWAIT 0x80 /* this message should be nonblocking */
#define MSG_EOF 0x100 /* data completes connection */
#define MSG_COMPAT 0x8000 /* used in sendit() */
/*
* Header for ancillary data objects in msg_control buffer.
* Used for additional information with/about a datagram
* not expressible by flags. The format is a sequence
* of message elements headed by cmsghdr structures.
*/
struct cmsghdr {
socklen_t cmsg_len; /* data byte count, including hdr */
int cmsg_level; /* originating protocol */
int cmsg_type; /* protocol-specific type */
/* followed by unsigned char cmsg_data[]; */
};
/*
* While we may have more groups than this, the cmsgcred struct must
* be able to fit in an mbuf, and NGROUPS_MAX is too large to allow
* this.
*/
#define CMGROUP_MAX 16
/*
* Credentials structure, used to verify the identity of a peer
* process that has sent us a message. This is allocated by the
* peer process but filled in by the kernel. This prevents the
* peer from lying about its identity. (Note that cmcred_groups[0]
* is the effective GID.)
*/
struct cmsgcred {
pid_t cmcred_pid; /* PID of sending process */
uid_t cmcred_uid; /* real UID of sending process */
uid_t cmcred_euid; /* effective UID of sending process */
gid_t cmcred_gid; /* real GID of sending process */
short cmcred_ngroups; /* number or groups */
gid_t cmcred_groups[CMGROUP_MAX]; /* groups */
};
/* given pointer to struct cmsghdr, return pointer to data */
#define CMSG_DATA(cmsg) ((unsigned char *)(cmsg) + \
_ALIGN(sizeof(struct cmsghdr)))
/* given pointer to struct cmsghdr, return pointer to next cmsghdr */
#define CMSG_NXTHDR(mhdr, cmsg) \
(((caddr_t)(cmsg) + _ALIGN((cmsg)->cmsg_len) + \
_ALIGN(sizeof(struct cmsghdr)) > \
(caddr_t)(mhdr)->msg_control + (mhdr)->msg_controllen) ? \
(struct cmsghdr *)NULL : \
(struct cmsghdr *)((caddr_t)(cmsg) + _ALIGN((cmsg)->cmsg_len)))
#define CMSG_FIRSTHDR(mhdr) ((struct cmsghdr *)(mhdr)->msg_control)
/* RFC 2292 additions */
#define CMSG_SPACE(l) (_ALIGN(sizeof(struct cmsghdr)) + _ALIGN(l))
#define CMSG_LEN(l) (_ALIGN(sizeof(struct cmsghdr)) + (l))
#ifdef _KERNEL
#define CMSG_ALIGN(n) _ALIGN(n)
#endif
/* "Socket"-level control message types: */
#define SCM_RIGHTS 0x01 /* access rights (array of int) */
#define SCM_TIMESTAMP 0x02 /* timestamp (struct timeval) */
#define SCM_CREDS 0x03 /* process creds (struct cmsgcred) */
/*
* 4.3 compat sockaddr, move to compat file later
*/
struct osockaddr {
u_short sa_family; /* address family */
char sa_data[14]; /* up to 14 bytes of direct address */
};
/*
* 4.3-compat message header (move to compat file later).
*/
struct omsghdr {
caddr_t msg_name; /* optional address */
int msg_namelen; /* size of address */
struct iovec *msg_iov; /* scatter/gather array */
int msg_iovlen; /* # elements in msg_iov */
caddr_t msg_accrights; /* access rights sent/received */
int msg_accrightslen;
};
/*
* howto arguments for shutdown(2), specified by Posix.1g.
*/
#define SHUT_RD 0 /* shut down the reading side */
#define SHUT_WR 1 /* shut down the writing side */
#define SHUT_RDWR 2 /* shut down both sides */
/*
* sendfile(2) header/trailer struct
*/
struct sf_hdtr {
struct iovec *headers; /* pointer to an array of header struct iovec's */
int hdr_cnt; /* number of header iovec's */
struct iovec *trailers; /* pointer to an array of trailer struct iovec's */
int trl_cnt; /* number of trailer iovec's */
};
#include <sys/cdefs.h>
__BEGIN_DECLS
int accept(int, struct sockaddr *, socklen_t *);
int bind(int, const struct sockaddr *, socklen_t);
int connect(int, const struct sockaddr *, socklen_t);
int getpeername(int, struct sockaddr *, socklen_t *);
int getsockname(int, struct sockaddr *, socklen_t *);
int getsockopt(int, int, int, void *, socklen_t *);
int listen(int, int);
ssize_t recv(int, void *, size_t, int);
ssize_t recvfrom(int, void *, size_t, int, struct sockaddr *, socklen_t *);
ssize_t recvmsg(int, struct msghdr *, int);
ssize_t send(int, const void *, size_t, int);
ssize_t sendto(int, const void *,
size_t, int, const struct sockaddr *, socklen_t);
ssize_t sendmsg(int, const struct msghdr *, int);
int sendfile(int, int, off_t, size_t, struct sf_hdtr *, off_t *, int);
int setsockopt(int, int, int, const void *, socklen_t);
int shutdown(int, int);
int socket(int, int, int);
int socketpair(int, int, int, int *);
__END_DECLS
#endif /* !_SYS_SOCKET_H_ */