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ad71126b24
* sysdeps/unix/sysv/linux/cmsg_nxthdr.c (__cmsg_nxthdr): Correct test for cmsg struct size. * sysdeps/unix/sysv/linux/bits/socket.h (__cmsg_nxthdr): Likewise. * sysdeps/unix/sysv/linux/i386/makecontext.S: Remove unnecessary initializations. * libio/oldiopopen.c: Add lock for old_proc_file_chain access.
315 lines
10 KiB
C
315 lines
10 KiB
C
/* System-specific socket constants and types. Linux version.
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Copyright (C) 1991,1992,1994-1999,2000,2001 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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#ifndef __BITS_SOCKET_H
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#define __BITS_SOCKET_H
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#if !defined _SYS_SOCKET_H && !defined _NETINET_IN_H
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# error "Never include <bits/socket.h> directly; use <sys/socket.h> instead."
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#endif
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#define __need_size_t
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#define __need_NULL
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#include <stddef.h>
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#include <limits.h>
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#include <sys/types.h>
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/* Type for length arguments in socket calls. */
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#ifndef __socklen_t_defined
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typedef __socklen_t socklen_t;
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# define __socklen_t_defined
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#endif
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/* Types of sockets. */
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enum __socket_type
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{
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SOCK_STREAM = 1, /* Sequenced, reliable, connection-based
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byte streams. */
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#define SOCK_STREAM SOCK_STREAM
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SOCK_DGRAM = 2, /* Connectionless, unreliable datagrams
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of fixed maximum length. */
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#define SOCK_DGRAM SOCK_DGRAM
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SOCK_RAW = 3, /* Raw protocol interface. */
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#define SOCK_RAW SOCK_RAW
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SOCK_RDM = 4, /* Reliably-delivered messages. */
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#define SOCK_RDM SOCK_RDM
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SOCK_SEQPACKET = 5, /* Sequenced, reliable, connection-based,
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datagrams of fixed maximum length. */
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#define SOCK_SEQPACKET SOCK_SEQPACKET
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SOCK_PACKET = 10 /* Linux specific way of getting packets
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at the dev level. For writing rarp and
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other similar things on the user level. */
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#define SOCK_PACKET SOCK_PACKET
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};
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/* Protocol families. */
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#define PF_UNSPEC 0 /* Unspecified. */
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#define PF_LOCAL 1 /* Local to host (pipes and file-domain). */
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#define PF_UNIX PF_LOCAL /* Old BSD name for PF_LOCAL. */
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#define PF_FILE PF_LOCAL /* Another non-standard name for PF_LOCAL. */
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#define PF_INET 2 /* IP protocol family. */
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#define PF_AX25 3 /* Amateur Radio AX.25. */
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#define PF_IPX 4 /* Novell Internet Protocol. */
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#define PF_APPLETALK 5 /* Appletalk DDP. */
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#define PF_NETROM 6 /* Amateur radio NetROM. */
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#define PF_BRIDGE 7 /* Multiprotocol bridge. */
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#define PF_ATMPVC 8 /* ATM PVCs. */
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#define PF_X25 9 /* Reserved for X.25 project. */
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#define PF_INET6 10 /* IP version 6. */
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#define PF_ROSE 11 /* Amateur Radio X.25 PLP. */
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#define PF_DECnet 12 /* Reserved for DECnet project. */
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#define PF_NETBEUI 13 /* Reserved for 802.2LLC project. */
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#define PF_SECURITY 14 /* Security callback pseudo AF. */
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#define PF_KEY 15 /* PF_KEY key management API. */
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#define PF_NETLINK 16
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#define PF_ROUTE PF_NETLINK /* Alias to emulate 4.4BSD. */
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#define PF_PACKET 17 /* Packet family. */
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#define PF_ASH 18 /* Ash. */
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#define PF_ECONET 19 /* Acorn Econet. */
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#define PF_ATMSVC 20 /* ATM SVCs. */
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#define PF_SNA 22 /* Linux SNA Project */
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#define PF_IRDA 23 /* IRDA sockets. */
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#define PF_PPPOX 24 /* PPPoX sockets. */
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#define PF_WANPIPE 25 /* Wanpipe API sockets. */
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#define PF_BLUETOOTH 31 /* Bluetooth sockets. */
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#define PF_MAX 32 /* For now.. */
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/* Address families. */
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#define AF_UNSPEC PF_UNSPEC
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#define AF_LOCAL PF_LOCAL
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#define AF_UNIX PF_UNIX
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#define AF_FILE PF_FILE
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#define AF_INET PF_INET
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#define AF_AX25 PF_AX25
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#define AF_IPX PF_IPX
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#define AF_APPLETALK PF_APPLETALK
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#define AF_NETROM PF_NETROM
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#define AF_BRIDGE PF_BRIDGE
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#define AF_ATMPVC PF_ATMPVC
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#define AF_X25 PF_X25
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#define AF_INET6 PF_INET6
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#define AF_ROSE PF_ROSE
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#define AF_DECnet PF_DECnet
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#define AF_NETBEUI PF_NETBEUI
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#define AF_SECURITY PF_SECURITY
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#define AF_KEY PF_KEY
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#define AF_NETLINK PF_NETLINK
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#define AF_ROUTE PF_ROUTE
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#define AF_PACKET PF_PACKET
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#define AF_ASH PF_ASH
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#define AF_ECONET PF_ECONET
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#define AF_ATMSVC PF_ATMSVC
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#define AF_SNA PF_SNA
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#define AF_IRDA PF_IRDA
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#define AF_PPPOX PF_PPPOX
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#define AF_WANPIPE PF_WANPIPE
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#define AF_BLUETOOTH PF_BLUETOOTH
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#define AF_MAX PF_MAX
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/* Socket level values. Others are defined in the appropriate headers.
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XXX These definitions also should go into the appropriate headers as
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far as they are available. */
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#define SOL_RAW 255
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#define SOL_DECNET 261
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#define SOL_X25 262
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#define SOL_PACKET 263
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#define SOL_ATM 264 /* ATM layer (cell level). */
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#define SOL_AAL 265 /* ATM Adaption Layer (packet level). */
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#define SOL_IRDA 266
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/* Maximum queue length specifiable by listen. */
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#define SOMAXCONN 128
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/* Get the definition of the macro to define the common sockaddr members. */
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#include <bits/sockaddr.h>
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/* Structure describing a generic socket address. */
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struct sockaddr
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{
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__SOCKADDR_COMMON (sa_); /* Common data: address family and length. */
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char sa_data[14]; /* Address data. */
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};
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/* Structure large enough to hold any socket address (with the historical
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exception of AF_UNIX). We reserve 128 bytes. */
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#if ULONG_MAX > 0xffffffff
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# define __ss_aligntype __uint64_t
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#else
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# define __ss_aligntype __uint32_t
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#endif
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#define _SS_SIZE 128
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#define _SS_PADSIZE (_SS_SIZE - (2 * sizeof (__ss_aligntype)))
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struct sockaddr_storage
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{
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__SOCKADDR_COMMON (ss_); /* Address family, etc. */
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__ss_aligntype __ss_align; /* Force desired alignment. */
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char __ss_padding[_SS_PADSIZE];
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};
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/* Bits in the FLAGS argument to `send', `recv', et al. */
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enum
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{
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MSG_OOB = 0x01, /* Process out-of-band data. */
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#define MSG_OOB MSG_OOB
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MSG_PEEK = 0x02, /* Peek at incoming messages. */
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#define MSG_PEEK MSG_PEEK
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MSG_DONTROUTE = 0x04, /* Don't use local routing. */
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#define MSG_DONTROUTE MSG_DONTROUTE
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#ifdef __USE_GNU
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/* DECnet uses a different name. */
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MSG_TRYHARD = MSG_DONTROUTE,
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# define MSG_TRYHARD MSG_DONTROUTE
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#endif
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MSG_CTRUNC = 0x08, /* Control data lost before delivery. */
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#define MSG_CTRUNC MSG_CTRUNC
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MSG_PROXY = 0x10, /* Supply or ask second address. */
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#define MSG_PROXY MSG_PROXY
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MSG_TRUNC = 0x20,
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#define MSG_TRUNC MSG_TRUNC
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MSG_DONTWAIT = 0x40, /* Nonblocking IO. */
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#define MSG_DONTWAIT MSG_DONTWAIT
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MSG_EOR = 0x80, /* End of record. */
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#define MSG_EOR MSG_EOR
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MSG_WAITALL = 0x100, /* Wait for a full request. */
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#define MSG_WAITALL MSG_WAITALL
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MSG_FIN = 0x200,
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#define MSG_FIN MSG_FIN
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MSG_SYN = 0x400,
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#define MSG_SYN MSG_SYN
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MSG_CONFIRM = 0x800, /* Confirm path validity. */
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#define MSG_CONFIRM MSG_CONFIRM
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MSG_RST = 0x1000,
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#define MSG_RST MSG_RST
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MSG_ERRQUEUE = 0x2000, /* Fetch message from error queue. */
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#define MSG_ERRQUEUE MSG_ERRQUEUE
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MSG_NOSIGNAL = 0x4000, /* Do not generate SIGPIPE. */
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#define MSG_NOSIGNAL MSG_NOSIGNAL
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MSG_MORE = 0x8000 /* Sender will send more. */
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#define MSG_MORE MSG_MORE
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};
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/* Structure describing messages sent by
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`sendmsg' and received by `recvmsg'. */
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struct msghdr
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{
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void *msg_name; /* Address to send to/receive from. */
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socklen_t msg_namelen; /* Length of address data. */
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struct iovec *msg_iov; /* Vector of data to send/receive into. */
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int msg_iovlen; /* Number of elements in the vector. */
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void *msg_control; /* Ancillary data (eg BSD filedesc passing). */
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socklen_t msg_controllen; /* Ancillary data buffer length. */
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int msg_flags; /* Flags on received message. */
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};
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/* Structure used for storage of ancillary data object information. */
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struct cmsghdr
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{
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size_t cmsg_len; /* Length of data in cmsg_data plus length
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of cmsghdr structure. */
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int cmsg_level; /* Originating protocol. */
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int cmsg_type; /* Protocol specific type. */
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__extension__ unsigned char __cmsg_data __flexarr; /* Ancillary data. */
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/* XXX Perhaps this should be removed. */
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};
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/* Ancillary data object manipulation macros. */
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#if !defined __STRICT_ANSI__ && defined __GNUC__ && __GNUC__ >= 2
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# define CMSG_DATA(cmsg) ((cmsg)->__cmsg_data)
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#else
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# define CMSG_DATA(cmsg) ((unsigned char *) ((struct cmsghdr *) (cmsg) + 1))
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#endif
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#define CMSG_NXTHDR(mhdr, cmsg) __cmsg_nxthdr (mhdr, cmsg)
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#define CMSG_FIRSTHDR(mhdr) \
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((size_t) (mhdr)->msg_controllen >= sizeof (struct cmsghdr) \
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? (struct cmsghdr *) (mhdr)->msg_control : (struct cmsghdr *) NULL)
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#define CMSG_ALIGN(len) (((len) + sizeof (size_t) - 1) \
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& (size_t) ~(sizeof (size_t) - 1))
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#define CMSG_SPACE(len) (CMSG_ALIGN (len) \
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+ CMSG_ALIGN (sizeof (struct cmsghdr)))
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#define CMSG_LEN(len) (CMSG_ALIGN (sizeof (struct cmsghdr)) + (len))
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extern struct cmsghdr *__cmsg_nxthdr (struct msghdr *__mhdr,
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struct cmsghdr *__cmsg) __THROW;
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#ifdef __USE_EXTERN_INLINES
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# ifndef _EXTERN_INLINE
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# define _EXTERN_INLINE extern __inline
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# endif
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_EXTERN_INLINE struct cmsghdr *
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__cmsg_nxthdr (struct msghdr *__mhdr, struct cmsghdr *__cmsg) __THROW
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{
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if ((size_t) __cmsg->cmsg_len < sizeof (struct cmsghdr))
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/* The kernel header does this so there may be a reason. */
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return 0;
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__cmsg = (struct cmsghdr *) ((unsigned char *) __cmsg
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+ CMSG_ALIGN (__cmsg->cmsg_len));
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if ((unsigned char *) (__cmsg + 1) > ((unsigned char *) __mhdr->msg_control
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+ __mhdr->msg_controllen)
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|| ((unsigned char *) __cmsg + CMSG_ALIGN (__cmsg->cmsg_len)
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> ((unsigned char *) __mhdr->msg_control + __mhdr->msg_controllen)))
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/* No more entries. */
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return 0;
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return __cmsg;
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}
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#endif /* Use `extern inline'. */
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/* Socket level message types. This must match the definitions in
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<linux/socket.h>. */
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enum
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{
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SCM_RIGHTS = 0x01, /* Transfer file descriptors. */
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#define SCM_RIGHTS SCM_RIGHTS
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#ifdef __USE_BSD
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SCM_CREDENTIALS = 0x02, /* Credentials passing. */
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# define SCM_CREDENTIALS SCM_CREDENTIALS
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#endif
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__SCM_CONNECT = 0x03 /* Data array is `struct scm_connect'. */
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};
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/* User visible structure for SCM_CREDENTIALS message */
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struct ucred
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{
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pid_t pid; /* PID of sending process. */
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uid_t uid; /* UID of sending process. */
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gid_t gid; /* GID of sending process. */
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};
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/* Get socket manipulation related informations from kernel headers. */
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#include <asm/socket.h>
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/* Structure used to manipulate the SO_LINGER option. */
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struct linger
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{
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int l_onoff; /* Nonzero to linger on close. */
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int l_linger; /* Time to linger. */
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};
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#endif /* bits/socket.h */
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