/* 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 _SYS_SOCKET_H # error "Never include directly; use instead." #endif #define __need_size_t #define __need_NULL #include #include /* Type for length arguments in socket calls. */ typedef unsigned int socklen_t; /* 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_FILE PF_LOCAL /* POSIX 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_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_AAL5 PF_AAL5 #define AF_X25 PF_X25 #define AF_INET6 PF_INET6 #define AF_MAX PF_MAX /* Socket level values. Others are defined in the appropriate headers. XXX These definitions also should go into the appropriate headers as far as they are available. */ #define SOL_IPV6 41 #define SOL_ICMPV6 58 #define SOL_RAW 255 #define SOL_AX25 257 #define SOL_ATALK 258 #define SOL_NETROM 259 #define SOL_ROSE 260 #define SOL_DECNET 261 #define SOL_X25 262 /* Maximum queue length specifiable by listen. */ #define SOMAXCONN 128 /* Get the definition of the macro to define the common sockaddr members. */ #include /* 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. */ socklen_t msg_namelen; /* Length of address data. */ struct iovec *msg_iov; /* Vector of data to send/receive into. */ size_t msg_iovlen; /* Number of elements in the vector. */ __ptr_t msg_control; /* Ancillary data (eg BSD filedesc passing). */ size_t msg_controllen; /* Ancillary data buffer length. */ int msg_flags; /* Flags on received message. */ }; /* Structure used for storage of ancillary data object information. */ struct cmsghdr { size_t cmsg_len; /* Length of data in cmsg_data plus length of cmsghdr structure. */ int cmsg_level; /* Originating protocol. */ int cmsg_type; /* Protocol specific type. */ #if !defined __STRICT_ANSI__ && defined __GNUC__ && __GNUC__ >= 2 unsigned char __cmsg_data[0]; /* Ancillary data. */ /* XXX Perhaps this should be removed. */ #endif }; /* Ancillary data object manipulation macros. */ #if !defined __STRICT_ANSI__ && defined __GNUC__ && __GNUC__ >= 2 # define CMSG_DATA(cmsg) ((cmsg)->__cmsg_data) #else # define CMSG_DATA(cmsg) ((unsigned char *) ((struct cmsghdr *) (cmsg) + 1)) #endif #define CMSG_NXTHDR(mhdr, cmsg) __cmsg_nxthdr (mhdr, cmsg) #define CMSG_FIRSTHDR(mhdr) \ ((size_t) (mhdr)->msg_controllen >= sizeof (struct cmsghdr) \ ? (struct cmsghdr *) (mhdr)->msg_control : (struct cmsghdr *) NULL) #define CMSG_ALIGN(len) (((len) + sizeof (size_t) - 1) \ & ~(sizeof (size_t) - 1)) #define CMSG_SPACE(len) (CMSG_ALIGN (len) \ + CMSG_ALIGN (sizeof (struct cmsghdr))) #define CMSG_LEN(len) (CMSG_ALIGN (sizeof (struct cmsghdr)) + (len)) #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; } /* Socket level message types. This must match the definitions in . */ enum { SCM_RIGHTS = 0x01, /* Data array contains access rights. */ #define SCM_RIGHTS SCM_RIGHTS __SCM_CREDENTIALS = 0x02, /* Data array is `struct ucred'. */ __SCM_CONNECT = 0x03 /* Data array is `struct scm_connect'. */ }; /* Get socket manipulation related informations from kernel headers. */ #include /* Structure used to manipulate the SO_LINGER option. */ struct linger { int l_onoff; /* Nonzero to linger on close. */ int l_linger; /* Time to linger. */ };