+2009-05-07 Simon Josefsson <simon@josefsson.org>
+
+ * modules/sys_socket (Makefile.am): Substitute
+ HAVE_STRUCT_SOCKADDR_STORAGE. Depend on alignof.
+ * m4/sys_socket_h.m4: Check for sockaddr_storage.
+ * lib/sys_socket.in.h (sockaddr_storage): Define when needed.
+ * tests/test-sys_socket.c: Check sockaddr_storage.
+
2009-05-08 Bruno Haible <bruno@clisp.org>
Use module 'alignof'.
#ifndef _GL_SYS_SOCKET_H
#define _GL_SYS_SOCKET_H
+#if !@HAVE_STRUCT_SOCKADDR_STORAGE@
+#include <alignof.h>
+/* Code taken from glibc sysdeps/unix/sysv/linux/bits/socket.h on
+ 2009-05-08, licensed under LGPLv2.1+, plus portability fixes. */
+#define __ss_aligntype unsigned long int
+#define _SS_SIZE 256
+#define _SS_PADSIZE (_SS_SIZE - (max (sizeof (sa_family_t), \
+ alignof (__ss_aligntype)) \
+ + sizeof (__ss_aligntype)))
+
+struct sockaddr_storage
+{
+ sa_family_t ss_family; /* Address family, etc. */
+ __ss_aligntype __ss_align; /* Force desired alignment. */
+ char __ss_padding[_SS_PADSIZE];
+};
+#endif
+
#if @HAVE_SYS_SOCKET_H@
/* A platform that has <sys/socket.h>. */
# sys_socket_h.m4 serial 12
-dnl Copyright (C) 2005-2008 Free Software Foundation, Inc.
+dnl Copyright (C) 2005-2009 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
dnl with or without modifications, as long as this notice is preserved.
else
SYS_SOCKET_H='sys/socket.h'
fi
+ AC_CHECK_TYPES([struct sockaddr_storage],,,[
+ /* sys/types.h is not needed according to POSIX, but the
+ sys/socket.h in i386-unknown-freebsd4.10 and
+ powerpc-apple-darwin5.5 required it. */
+#include <sys/types.h>
+#ifdef HAVE_SYS_SOCKET_H
+#include <sys/socket.h>
+#endif
+#ifdef HAVE_WS2TCPIP_H
+#include <ws2tcpip.h>
+#endif
+])
+ if test $ac_cv_type_struct_sockaddr_storage = no; then
+ HAVE_STRUCT_SOCKADDR_STORAGE=0
+ SYS_SOCKET_H='sys/socket.h'
+ fi
if test -n "$SYS_SOCKET_H"; then
dnl Check prerequisites of the <sys/socket.h> replacement.
gl_CHECK_NEXT_HEADERS([sys/socket.h])
GNULIB_SENDTO=0; AC_SUBST([GNULIB_SENDTO])
GNULIB_SETSOCKOPT=0; AC_SUBST([GNULIB_SETSOCKOPT])
GNULIB_SHUTDOWN=0; AC_SUBST([GNULIB_SHUTDOWN])
+ HAVE_STRUCT_SOCKADDR_STORAGE=1; AC_SUBST([HAVE_STRUCT_SOCKADDR_STORAGE])
])
include_next
link-warning
errno
+alignof
configure.ac:
gl_HEADER_SYS_SOCKET
-e 's|@''GNULIB_SHUTDOWN''@|$(GNULIB_SHUTDOWN)|g' \
-e 's|@''HAVE_WINSOCK2_H''@|$(HAVE_WINSOCK2_H)|g' \
-e 's|@''HAVE_WS2TCPIP_H''@|$(HAVE_WS2TCPIP_H)|g' \
+ -e 's|@''HAVE_STRUCT_SOCKADDR_STORAGE''@|$(HAVE_STRUCT_SOCKADDR_STORAGE)|g' \
-e '/definition of GL_LINK_WARNING/r $(LINK_WARNING_H)' \
< $(srcdir)/sys_socket.in.h; \
} > $@-t
/* Test of <sys/socket.h> substitute.
- Copyright (C) 2007 Free Software Foundation, Inc.
+ Copyright (C) 2007, 2009 Free Software Foundation, Inc.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
int
main ()
{
+ struct sockaddr_storage x;
+
/* Check some errno values. */
switch (0)
{
break;
}
+ x.ss_family = 42;
+
return 0;
}