#ifndef _GL_SYS_SOCKET_H
#define _GL_SYS_SOCKET_H
+#if !@HAVE_SA_FAMILY_T@
+typedef unsigned short sa_family_t;
+#endif
+
#if !@HAVE_STRUCT_SOCKADDR_STORAGE@
# include <alignof.h>
/* Code taken from glibc sysdeps/unix/sysv/linux/bits/socket.h on
#endif /* HAVE_SYS_SOCKET_H */
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#if @GNULIB_ACCEPT4@
+/* Accept a connection on a socket, with specific opening flags.
+ The flags are a bitmask, possibly including O_CLOEXEC (defined in <fcntl.h>)
+ and O_TEXT, O_BINARY (defined in "binary-io.h").
+ See also the Linux man page at
+ <http://www.kernel.org/doc/man-pages/online/pages/man2/accept4.2.html>. */
+# if @HAVE_ACCEPT4@
+# define accept4 rpl_accept4
+# endif
+extern int accept4 (int sockfd, struct sockaddr *addr, socklen_t *addrlen,
+ int flags);
+#elif defined GNULIB_POSIXCHECK
+# undef accept4
+# define accept4(s,a,l,f) \
+ (GL_LINK_WARNING ("accept4 is unportable - " \
+ "use gnulib module accept4 for portability"), \
+ accept4 (s, a, l, f))
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
#endif /* _GL_SYS_SOCKET_H */
#endif /* _GL_SYS_SOCKET_H */