2012-05-10 19:56:56 +00:00
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/* System-specific socket constants and types. Hurd version.
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2022-01-01 18:54:23 +00:00
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Copyright (C) 1991-2022 Free Software Foundation, Inc.
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2012-05-10 19:56:56 +00:00
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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 License as
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published by the Free Software Foundation; either version 2.1 of the
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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; see the file COPYING.LIB. If
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Prefer https to http for gnu.org and fsf.org URLs
Also, change sources.redhat.com to sourceware.org.
This patch was automatically generated by running the following shell
script, which uses GNU sed, and which avoids modifying files imported
from upstream:
sed -ri '
s,(http|ftp)(://(.*\.)?(gnu|fsf|sourceware)\.org($|[^.]|\.[^a-z])),https\2,g
s,(http|ftp)(://(.*\.)?)sources\.redhat\.com($|[^.]|\.[^a-z]),https\2sourceware.org\4,g
' \
$(find $(git ls-files) -prune -type f \
! -name '*.po' \
! -name 'ChangeLog*' \
! -path COPYING ! -path COPYING.LIB \
! -path manual/fdl-1.3.texi ! -path manual/lgpl-2.1.texi \
! -path manual/texinfo.tex ! -path scripts/config.guess \
! -path scripts/config.sub ! -path scripts/install-sh \
! -path scripts/mkinstalldirs ! -path scripts/move-if-change \
! -path INSTALL ! -path locale/programs/charmap-kw.h \
! -path po/libc.pot ! -path sysdeps/gnu/errlist.c \
! '(' -name configure \
-execdir test -f configure.ac -o -f configure.in ';' ')' \
! '(' -name preconfigure \
-execdir test -f preconfigure.ac ';' ')' \
-print)
and then by running 'make dist-prepare' to regenerate files built
from the altered files, and then executing the following to cleanup:
chmod a+x sysdeps/unix/sysv/linux/riscv/configure
# Omit irrelevant whitespace and comment-only changes,
# perhaps from a slightly-different Autoconf version.
git checkout -f \
sysdeps/csky/configure \
sysdeps/hppa/configure \
sysdeps/riscv/configure \
sysdeps/unix/sysv/linux/csky/configure
# Omit changes that caused a pre-commit check to fail like this:
# remote: *** error: sysdeps/powerpc/powerpc64/ppc-mcount.S: trailing lines
git checkout -f \
sysdeps/powerpc/powerpc64/ppc-mcount.S \
sysdeps/unix/sysv/linux/s390/s390-64/syscall.S
# Omit change that caused a pre-commit check to fail like this:
# remote: *** error: sysdeps/sparc/sparc64/multiarch/memcpy-ultra3.S: last line does not end in newline
git checkout -f sysdeps/sparc/sparc64/multiarch/memcpy-ultra3.S
2019-09-07 05:40:42 +00:00
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not, see <https://www.gnu.org/licenses/>. */
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2012-05-10 19:56:56 +00:00
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#ifndef __BITS_SOCKET_H
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#define __BITS_SOCKET_H 1
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#ifndef _SYS_SOCKET_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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#include <stddef.h>
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2017-09-24 20:20:10 +00:00
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#include <bits/wordsize.h>
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2017-09-03 00:22:00 +00:00
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#include <sys/types.h>
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2012-05-10 19:56:56 +00:00
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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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#define SOCK_MAX (SOCK_SEQPACKET + 1)
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/* Mask which covers at least up to SOCK_MASK-1. The
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remaining bits are used as flags. */
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#define SOCK_TYPE_MASK 0xf
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/* Flags to be ORed into the type parameter of socket and socketpair and
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used for the flags parameter of accept4. */
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SOCK_CLOEXEC = 0x00400000, /* Atomically set close-on-exec flag for the
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new descriptor(s). */
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#define SOCK_CLOEXEC SOCK_CLOEXEC
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/* Changed from the O_NONBLOCK value (0x8, which is unusable for us as it is
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conflicting with the original SOCK_* flags' values) to the Linux value
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(04000). TODO: is there a ``better'' value? */
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SOCK_NONBLOCK = 0x0800 /* Atomically mark descriptor(s) as
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non-blocking. */
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#define SOCK_NONBLOCK SOCK_NONBLOCK
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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 /* POSIX name for PF_LOCAL. */
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#define PF_INET 2 /* IP protocol family. */
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#define PF_IMPLINK 3 /* ARPAnet IMP protocol. */
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#define PF_PUP 4 /* PUP protocols. */
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#define PF_CHAOS 5 /* MIT Chaos protocols. */
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#define PF_NS 6 /* Xerox NS protocols. */
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#define PF_ISO 7 /* ISO protocols. */
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#define PF_OSI PF_ISO
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#define PF_ECMA 8 /* ECMA protocols. */
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#define PF_DATAKIT 9 /* AT&T Datakit protocols. */
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#define PF_CCITT 10 /* CCITT protocols (X.25 et al). */
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#define PF_SNA 11 /* IBM SNA protocol. */
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#define PF_DECnet 12 /* DECnet protocols. */
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#define PF_DLI 13 /* Direct data link interface. */
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#define PF_LAT 14 /* DEC Local Area Transport protocol. */
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#define PF_HYLINK 15 /* NSC Hyperchannel protocol. */
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#define PF_APPLETALK 16 /* Don't use this. */
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#define PF_ROUTE 17 /* Internal Routing Protocol. */
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#define PF_LINK 18 /* Link layer interface. */
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#define PF_XTP 19 /* eXpress Transfer Protocol (no AF). */
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#define PF_COIP 20 /* Connection-oriented IP, aka ST II. */
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#define PF_CNT 21 /* Computer Network Technology. */
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#define PF_RTIP 22 /* Help Identify RTIP packets. **/
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#define PF_IPX 23 /* Novell Internet Protocol. */
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#define PF_SIP 24 /* Simple Internet Protocol. */
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#define PF_PIP 25 /* Help Identify PIP packets. */
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#define PF_INET6 26 /* IP version 6. */
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#define PF_MAX 27
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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_IMPLINK PF_IMPLINK
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#define AF_PUP PF_PUP
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#define AF_CHAOS PF_CHAOS
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#define AF_NS PF_NS
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#define AF_ISO PF_ISO
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#define AF_OSI PF_OSI
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#define AF_ECMA PF_ECMA
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#define AF_DATAKIT PF_DATAKIT
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#define AF_CCITT PF_CCITT
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#define AF_SNA PF_SNA
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#define AF_DECnet PF_DECnet
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#define AF_DLI PF_DLI
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#define AF_LAT PF_LAT
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#define AF_HYLINK PF_HYLINK
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#define AF_APPLETALK PF_APPLETALK
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#define AF_ROUTE PF_ROUTE
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#define AF_LINK PF_LINK
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2017-09-24 20:20:10 +00:00
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#ifdef __USE_MISC
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# define pseudo_AF_XTP PF_XTP
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#endif
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2012-05-10 19:56:56 +00:00
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#define AF_COIP PF_COIP
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#define AF_CNT PF_CNT
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2017-09-24 20:20:10 +00:00
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#ifdef __USE_MISC
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# define pseudo_AF_RTIP PF_RTIP
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#endif
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2012-05-10 19:56:56 +00:00
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#define AF_IPX PF_IPX
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#define AF_SIP PF_SIP
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2017-09-24 20:20:10 +00:00
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#ifdef __USE_MISC
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# define pseudo_AF_PIP PF_PIP
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#endif
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2012-05-10 19:56:56 +00:00
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#define AF_INET6 PF_INET6
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#define AF_MAX PF_MAX
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/* Maximum queue length specifiable by listen. */
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#define SOMAXCONN 128 /* 5 on the origional 4.4 BSD. */
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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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2016-05-23 17:43:09 +00:00
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exception of AF_UNIX). */
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2017-09-24 20:20:10 +00:00
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#if __WORDSIZE == 64
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2012-05-10 19:56:56 +00:00
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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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2016-05-23 17:43:09 +00:00
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#define _SS_PADSIZE \
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(_SS_SIZE - __SOCKADDR_COMMON_SIZE - sizeof (__ss_aligntype))
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2012-05-10 19:56:56 +00:00
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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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char __ss_padding[_SS_PADSIZE];
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2016-05-23 17:43:09 +00:00
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__ss_aligntype __ss_align; /* Force desired alignment. */
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2012-05-10 19:56:56 +00:00
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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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MSG_EOR = 0x08, /* Data completes record. */
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#define MSG_EOR MSG_EOR
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MSG_TRUNC = 0x10, /* Data discarded before delivery. */
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#define MSG_TRUNC MSG_TRUNC
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MSG_CTRUNC = 0x20, /* Control data lost before delivery. */
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#define MSG_CTRUNC MSG_CTRUNC
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MSG_WAITALL = 0x40, /* Wait for full request or error. */
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#define MSG_WAITALL MSG_WAITALL
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MSG_DONTWAIT = 0x80, /* This message should be nonblocking. */
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#define MSG_DONTWAIT MSG_DONTWAIT
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MSG_NOSIGNAL = 0x0400 /* Do not generate SIGPIPE on EPIPE. */
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#define MSG_NOSIGNAL MSG_NOSIGNAL
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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 in 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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socklen_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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Installed-header hygiene (BZ#20366): Simple self-contained fixes.
Some headers did not include all of their prerequisite headers.
* rpcsvc/nislib.h: Include rpcsvc/nis.h.
* sysdeps/unix/sysv/linux/netrose/rose.h:
Include sys/socket.h and netax25/ax25.h.
<endian.h> only defines BYTE_ORDER, BIG_ENDIAN, LITTLE_ENDIAN,
etc. under __USE_MISC; glibc's headers should use __BYTE_ORDER,
__BIG_ENDIAN, __LITTLE_ENDIAN, etc. instead.
* inet/netinet/icmp6.h, inet/netinet/ip6.h
* resolv/arpa/nameser_compat.h:
Use __BYTE_ORDER etc. instead of BYTE_ORDER etc.
sys/types.h only conditionally defines caddr_t and clockid_t.
* sysdeps/unix/sysv/linux/sys/quota.h:
Use __caddr_t instead of caddr_t.
* sysdeps/unix/sysv/linux/sys/timerfd.h:
Use __clockid_t instead of clockid_t.
Remove a #warning that was the sole actual problem with using sys/ipc.h
without _GNU_SOURCE/_XOPEN_SOURCE.
* sysvipc/sys/ipc.h: Remove unnecessary #warning.
_LIBC, __USE_XOPEN2K8, and __STDC_VERSION__ are not always defined.
It seems to me that _LIBC should not appear in installed headers, but
avoiding that for argp specifically would require more surgery than
feels appropriate for this patch set. It's possible that
"#ifdef _LIBC" would be sufficient, but I wanted to be conservative.
All three versions of bits/socket.h want to know whether __flexarr
will produce a real flexible array member -- specifically, one that
doesn't alter sizeof(the structure containing it). They were testing
for this with a complicated #if condition that did not agree with
sys/cdefs.h and that tripped -Wundef warnings under -std=c90.
I added a new macro to sys/cdefs.h, __glibc_c99_flexarr_available,
which reveals exactly what these headers want to know. I also took
the opportunity to flatten the rather messy conditional nest defining
__flexarr.
* argp/argp.h: Check whether _LIBC is defined before expanding it.
* posix/glob.h: Check whether __USE_XOPEN2K8 is defined instead
of expanding it.
* misc/sys/cdefs.h: Tidy up conditional nest defining __flexarr.
Define __glibc_c99_flexarr_available to 1 when the compiler
supports C99-compatible flexible array members, 0 otherwise.
* sysdeps/unix/sysv/linux/bits/socket.h
* sysdeps/mach/hurd/bits/socket.h
* bits/socket.h: Use __glibc_c99_flexarr_available in
definitions of struct cmsghdr and CMSG_DATA.
2016-08-22 12:06:30 +00:00
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#if __glibc_c99_flexarr_available
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2012-05-10 19:56:56 +00:00
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__extension__ unsigned char __cmsg_data __flexarr; /* Ancillary data. */
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#endif
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};
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/* Ancillary data object manipulation macros. */
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Installed-header hygiene (BZ#20366): Simple self-contained fixes.
Some headers did not include all of their prerequisite headers.
* rpcsvc/nislib.h: Include rpcsvc/nis.h.
* sysdeps/unix/sysv/linux/netrose/rose.h:
Include sys/socket.h and netax25/ax25.h.
<endian.h> only defines BYTE_ORDER, BIG_ENDIAN, LITTLE_ENDIAN,
etc. under __USE_MISC; glibc's headers should use __BYTE_ORDER,
__BIG_ENDIAN, __LITTLE_ENDIAN, etc. instead.
* inet/netinet/icmp6.h, inet/netinet/ip6.h
* resolv/arpa/nameser_compat.h:
Use __BYTE_ORDER etc. instead of BYTE_ORDER etc.
sys/types.h only conditionally defines caddr_t and clockid_t.
* sysdeps/unix/sysv/linux/sys/quota.h:
Use __caddr_t instead of caddr_t.
* sysdeps/unix/sysv/linux/sys/timerfd.h:
Use __clockid_t instead of clockid_t.
Remove a #warning that was the sole actual problem with using sys/ipc.h
without _GNU_SOURCE/_XOPEN_SOURCE.
* sysvipc/sys/ipc.h: Remove unnecessary #warning.
_LIBC, __USE_XOPEN2K8, and __STDC_VERSION__ are not always defined.
It seems to me that _LIBC should not appear in installed headers, but
avoiding that for argp specifically would require more surgery than
feels appropriate for this patch set. It's possible that
"#ifdef _LIBC" would be sufficient, but I wanted to be conservative.
All three versions of bits/socket.h want to know whether __flexarr
will produce a real flexible array member -- specifically, one that
doesn't alter sizeof(the structure containing it). They were testing
for this with a complicated #if condition that did not agree with
sys/cdefs.h and that tripped -Wundef warnings under -std=c90.
I added a new macro to sys/cdefs.h, __glibc_c99_flexarr_available,
which reveals exactly what these headers want to know. I also took
the opportunity to flatten the rather messy conditional nest defining
__flexarr.
* argp/argp.h: Check whether _LIBC is defined before expanding it.
* posix/glob.h: Check whether __USE_XOPEN2K8 is defined instead
of expanding it.
* misc/sys/cdefs.h: Tidy up conditional nest defining __flexarr.
Define __glibc_c99_flexarr_available to 1 when the compiler
supports C99-compatible flexible array members, 0 otherwise.
* sysdeps/unix/sysv/linux/bits/socket.h
* sysdeps/mach/hurd/bits/socket.h
* bits/socket.h: Use __glibc_c99_flexarr_available in
definitions of struct cmsghdr and CMSG_DATA.
2016-08-22 12:06:30 +00:00
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#if __glibc_c99_flexarr_available
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2012-05-10 19:56:56 +00:00
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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 *) 0)
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2012-05-10 19:56:56 +00:00
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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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__NTH (__cmsg_nxthdr (struct msghdr *__mhdr, struct cmsghdr *__cmsg))
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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 (struct cmsghdr *) 0;
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2012-05-10 19:56:56 +00:00
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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 (struct cmsghdr *) 0;
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2012-05-10 19:56:56 +00:00
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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. */
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enum
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{
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SCM_RIGHTS = 0x01, /* Access rights (array of int). */
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#define SCM_RIGHTS SCM_RIGHTS
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SCM_TIMESTAMP = 0x02, /* Timestamp (struct timeval). */
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#define SCM_TIMESTAMP SCM_TIMESTAMP
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SCM_CREDS = 0x03 /* Process creds (struct cmsgcred). */
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#define SCM_CREDS SCM_CREDS
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};
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#ifdef __USE_MISC
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2012-05-10 19:56:56 +00:00
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/* Unfortunately, BSD practice dictates this structure be of fixed size.
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If there are more than CMGROUP_MAX groups, the list is truncated.
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(On GNU systems, the `cmcred_euid' field is just the first in the
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list of effective UIDs.) */
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#define CMGROUP_MAX 16
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/* Structure delivered by SCM_CREDS. This describes the identity of the
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sender of the data simultaneously received on the socket. By BSD
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convention, this is included only when a sender on a AF_LOCAL socket
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sends cmsg data of this type and size; the sender's structure is
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ignored, and the system fills in the various IDs of the sender process. */
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struct cmsgcred
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{
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__pid_t cmcred_pid;
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__uid_t cmcred_uid;
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__uid_t cmcred_euid;
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__gid_t cmcred_gid;
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int cmcred_ngroups;
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__gid_t cmcred_groups[CMGROUP_MAX];
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};
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2017-09-24 20:20:10 +00:00
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#endif
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2012-05-10 19:56:56 +00:00
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/* Protocol number used to manipulate socket-level options
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with `getsockopt' and `setsockopt'. */
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#define SOL_SOCKET 0xffff
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/* Socket-level options for `getsockopt' and `setsockopt'. */
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enum
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{
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SO_DEBUG = 0x0001, /* Record debugging information. */
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#define SO_DEBUG SO_DEBUG
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SO_ACCEPTCONN = 0x0002, /* Accept connections on socket. */
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#define SO_ACCEPTCONN SO_ACCEPTCONN
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SO_REUSEADDR = 0x0004, /* Allow reuse of local addresses. */
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#define SO_REUSEADDR SO_REUSEADDR
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SO_KEEPALIVE = 0x0008, /* Keep connections alive and send
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SIGPIPE when they die. */
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#define SO_KEEPALIVE SO_KEEPALIVE
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SO_DONTROUTE = 0x0010, /* Don't do local routing. */
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#define SO_DONTROUTE SO_DONTROUTE
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SO_BROADCAST = 0x0020, /* Allow transmission of
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broadcast messages. */
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#define SO_BROADCAST SO_BROADCAST
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SO_USELOOPBACK = 0x0040, /* Use the software loopback to avoid
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hardware use when possible. */
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#define SO_USELOOPBACK SO_USELOOPBACK
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SO_LINGER = 0x0080, /* Block on close of a reliable
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socket to transmit pending data. */
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#define SO_LINGER SO_LINGER
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SO_OOBINLINE = 0x0100, /* Receive out-of-band data in-band. */
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#define SO_OOBINLINE SO_OOBINLINE
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SO_REUSEPORT = 0x0200, /* Allow local address and port reuse. */
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#define SO_REUSEPORT SO_REUSEPORT
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SO_SNDBUF = 0x1001, /* Send buffer size. */
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#define SO_SNDBUF SO_SNDBUF
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SO_RCVBUF = 0x1002, /* Receive buffer. */
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#define SO_RCVBUF SO_RCVBUF
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SO_SNDLOWAT = 0x1003, /* Send low-water mark. */
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#define SO_SNDLOWAT SO_SNDLOWAT
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SO_RCVLOWAT = 0x1004, /* Receive low-water mark. */
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#define SO_RCVLOWAT SO_RCVLOWAT
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SO_SNDTIMEO = 0x1005, /* Send timeout. */
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#define SO_SNDTIMEO SO_SNDTIMEO
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SO_RCVTIMEO = 0x1006, /* Receive timeout. */
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#define SO_RCVTIMEO SO_RCVTIMEO
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SO_ERROR = 0x1007, /* Get and clear error status. */
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#define SO_ERROR SO_ERROR
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SO_STYLE = 0x1008, /* Get socket connection style. */
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#define SO_STYLE SO_STYLE
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SO_TYPE = SO_STYLE /* Compatible name for SO_STYLE. */
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#define SO_TYPE SO_TYPE
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};
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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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