glibc/sysdeps/unix/sysv/linux/bits/socket-constants.h
Florian Weimer 7854ebf8ed Linux: Use in-tree copy of SO_ constants for !__USE_MISC [BZ #24532]
The kernel changes for a 64-bit time_t on 32-bit architectures
resulted in <asm/socket.h> indirectly including <linux/posix_types.h>.
The latter is not namespace-clean for the POSIX version of
<sys/socket.h>.

This issue has persisted across several Linux releases, so this commit
creates our own copy of the SO_* definitions for !__USE_MISC mode.

The new test socket/tst-socket-consts ensures that the copy is
consistent with the kernel definitions (which vary across
architectures).  The test is tricky to get right because CPPFLAGS
includes include/libc-symbols.h, which in turn defines _GNU_SOURCE
unconditionally.

Tested with build-many-glibcs.py.  I verified that a discrepancy in
the definitions actually results in a failure of the
socket/tst-socket-consts test.
2019-07-24 10:59:34 +02:00

39 lines
1.3 KiB
C

/* Socket constants which vary among Linux architectures.
Copyright (C) 2019 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 Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#ifndef _SYS_SOCKET_H
# error "Never include <bits/socket-constants.h> directly; use <sys/socket.h> instead."
#endif
#define SOL_SOCKET 1
#define SO_ACCEPTCONN 30
#define SO_BROADCAST 6
#define SO_DONTROUTE 5
#define SO_ERROR 4
#define SO_KEEPALIVE 9
#define SO_LINGER 13
#define SO_OOBINLINE 10
#define SO_RCVBUF 8
#define SO_RCVLOWAT 18
#define SO_RCVTIMEO 20
#define SO_REUSEADDR 2
#define SO_SNDBUF 7
#define SO_SNDLOWAT 19
#define SO_SNDTIMEO 21
#define SO_TYPE 3