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/* System-specific socket constants and types. Linux version.
Copyright (C) 1991, 92, 94, 95, 96, 97 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If not,
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#ifndef _SOCKETBITS_H
#define _SOCKETBITS_H 1
#include <features.h>
#define __need_size_t
#include <stddef.h>
__BEGIN_DECLS
/* Types of sockets. */
enum __socket_type
{
SOCK_STREAM = 1, /* Sequenced, reliable, connection-based
byte streams. */
#define SOCK_STREAM SOCK_STREAM
SOCK_DGRAM = 2, /* Connectionless, unreliable datagrams
of fixed maximum length. */
#define SOCK_DGRAM SOCK_DGRAM
SOCK_RAW = 3, /* Raw protocol interface. */
#define SOCK_RAW SOCK_RAW
SOCK_RDM = 4, /* Reliably-delivered messages. */
#define SOCK_RDM SOCK_RDM
SOCK_SEQPACKET = 5, /* Sequenced, reliable, connection-based,
datagrams of fixed maximum length. */
#define SOCK_SEQPACKET SOCK_SEQPACKET
SOCK_PACKET = 10 /* Linux specific way of getting packets
at the dev level. For writing rarp and
other similar things on the user level. */
#define SOCK_PACKET SOCK_PACKET
};
/* 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_INET 2 /* IP protocol family. */
#define PF_AX25 3 /* Amateur Radio AX.25. */
#define PF_IPX 4 /* Novell Internet Protocol. */
#define PF_APPLETALK 5 /* Don't use this. */
#define PF_NETROM 6 /* Amateur radio NetROM. */
#define PF_BRIDGE 7 /* Multiprotocol bridge. */
#define PF_AAL5 8 /* Reserved for Werner's ATM. */
#define PF_X25 9 /* Reserved for X.25 project. */
#define PF_INET6 10 /* IP version 6. */
#define PF_MAX 12 /* For now.. */
/* Address families. */
#define AF_UNSPEC PF_UNSPEC
#define AF_LOCAL PF_LOCAL
#define AF_UNIX PF_UNIX
#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_AAL5 PF_AAL5
#define AF_X25 PF_X25
#define AF_INET6 PF_INET6
#define AF_MAX PF_MAX
/* Raw IP packet level. */
#define SOL_RAW 255
/* Maximum queue length specifiable by listen. */
#define SOMAXCONN 128
/* Get the definition of the macro to define the common sockaddr members. */
#include <sockaddrcom.h>
/* Structure describing a generic socket address. */
struct sockaddr
{
__SOCKADDR_COMMON (sa_); /* Common data: address family and length. */
char sa_data[14]; /* Address data. */
};
/* Bits in the FLAGS argument to `send', `recv', et al. */
enum
{
MSG_OOB = 0x01, /* Process out-of-band data. */
MSG_PEEK = 0x02, /* Peek at incoming messages. */
MSG_DONTROUTE = 0x04, /* Don't use local routing. */
MSG_CTRUNC = 0x08, /* Control data lost before delivery. */
MSG_PROXY = 0x10 /* Supply or ask second address. */
};
/* Structure describing messages sent by
`sendmsg' and received by `recvmsg'. */
struct msghdr
{
__ptr_t msg_name; /* Address to send to/receive from. */
int msg_namelen; /* Length of address data. */
/* XXX Should be type `size_t' according to POSIX.1g. */
struct iovec *msg_iov; /* Vector of data to send/receive into. */
int msg_iovlen; /* Number of elements in the vector. */
/* XXX Should be type `size_t' according to POSIX.1g. */
__ptr_t msg_control; /* Ancillary data (eg BSD filedesc passing). */
int msg_controllen; /* Ancillary data buffer length. */
/* XXX Should be type `size_t' according to POSIX.1g. */
int msg_flags; /* Flags on received message. */
};
/* Structure used for storage of ancillary data object information. */
struct cmsghdr
{
int cmsg_len; /* Length of data in cmsg_data plus length
of cmsghdr structure. */
/* XXX Should be type `size_t' according to POSIX.1g. */
int cmsg_level; /* Originating protocol. */
int cmsg_type; /* Protocol specific type. */
unsigned char __cmsg_data[0]; /* Ancillary data. */
};
/* Ancillary data object manipulation macros. */
#define CMSG_DATA(cmsg) ((cmsg)->__cmsg_data)
#define CMSG_NXTHDR(mhdr, cmsg) __cmsg_nxthdr (mhdr, cmsg)
#define CMSG_FIRSTHDR(mhdr) (mhdr) \
((size_t) (mhdr)->msg_controllen >= sizeof (struct cmsghdr) \
? (struct cmsghdr *) (mhdr)->msg_control : (struct cmsghdr *) NULL)
#ifndef _EXTERN_INLINE
# define _EXTERN_INLINE extern __inline
#endif
extern struct cmsghdr *__cmsg_nxthdr __P ((struct msghdr *__mhdr,
struct cmsghdr *__cmsg));
_EXTERN_INLINE struct cmsghdr *
__cmsg_nxthdr (struct msghdr *__mhdr, struct cmsghdr *__cmsg)
{
unsigned char *__p;
if ((size_t) __cmsg->cmsg_len < sizeof (struct cmsghdr))
/* The kernel header does this so there may be a reason. */
return NULL;
__p = (((unsigned char *) __cmsg)
+ ((__cmsg->cmsg_len + sizeof (long int) - 1) & ~sizeof (long int)));
if (__p >= (unsigned char *) __mhdr->msg_control + __mhdr->msg_controllen)
/* No more entries. */
return NULL;
return (struct cmsghdr *) __p;
}
/* Get socket manipulation related informations from kernel headers. */
#include <asm/socket.h>
/* Structure used to manipulate the SO_LINGER option. */
struct linger
{
int l_onoff; /* Nonzero to linger on close. */
int l_linger; /* Time to linger. */
};
__END_DECLS
#endif /* socketbits.h */
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