Revert "poll-win32"

[gnulib.git] / lib / arpa_inet.in.h

diff --git a/lib/arpa_inet.in.h b/lib/arpa_inet.in.h
index f043e59..6d62825 100644 (file)
--- a/lib/arpa_inet.in.h
+++ b/lib/arpa_inet.in.h
@@ -1,5 +1,6 @@
-/* Provide a arpa/inet header file for systems lacking it (read: MinGW)
-   Copyright (C) 2008 Free Software Foundation, Inc.
+/* A GNU-like <arpa/inet.h>.
+
+   Copyright (C) 2005-2006, 2008 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
@@ -16,30 +17,60 @@
    Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  */
 
 #ifndef _GL_ARPA_INET_H
-#define _GL_ARPA_INET_H
 
 /* Gnulib's sys/socket.h is responsible for pulling in winsock2.h etc
    under MinGW. */
 #include <sys/socket.h>
 
+#if @HAVE_ARPA_INET_H@
+
+/* The include_next requires a split double-inclusion guard.  */
+# @INCLUDE_NEXT@ @NEXT_ARPA_INET_H@
+
+#endif
+
+#ifndef _GL_ARPA_INET_H
+#define _GL_ARPA_INET_H
+
 #if @GNULIB_INET_NTOP@
-# include <inet_ntop.h>
+# if !@HAVE_DECL_INET_NTOP@
+/* Converts an internet address from internal format to a printable,
+   presentable format.
+   AF is an internet address family, such as AF_INET or AF_INET6.
+   SRC points to a 'struct in_addr' (for AF_INET) or 'struct in6_addr'
+   (for AF_INET6).
+   DST points to a buffer having room for CNT bytes.
+   The printable representation of the address (in numeric form, not
+   surrounded by [...], no reverse DNS is done) is placed in DST, and
+   DST is returned.  If an error occurs, the return value is NULL and
+   errno is set.  If CNT bytes are not sufficient to hold the result,
+   the return value is NULL and errno is set to ENOSPC.  A good value
+   for CNT is 46.
+
+   For more details, see the POSIX:2001 specification
+   <http://www.opengroup.org/susv3xsh/inet_ntop.html>.  */
+extern const char *inet_ntop (int af, const void *restrict src,
+                             char *restrict dst, socklen_t cnt);
+# endif
 #elif defined GNULIB_POSIXCHECK
 # undef inet_ntop
-# define inet_ntop(af,src,dst,cnt)                                     \
-    (GL_LINK_WARNING ("inet_ntop doesn't exist on mingw - " \
+# define inet_ntop(af,src,dst,cnt) \
+    (GL_LINK_WARNING ("inet_ntop is unportable - " \
                       "use gnulib module inet_ntop for portability"), \
      inet_ntop (af, src, dst, cnt))
 #endif
 
 #if @GNULIB_INET_PTON@
-# include <inet_pton.h>
+# if !@HAVE_DECL_INET_PTON@
+extern int inet_pton (int af, const char *restrict src, void *restrict dst);
+# endif
 #elif defined GNULIB_POSIXCHECK
 # undef inet_pton
-# define inet_pton(af,src,dst)                     \
-  (GL_LINK_WARNING ("inet_pton doesn't exist on mingw - "        \
-                   "use gnulib module inet_pton for portability"),       \
+# define inet_pton(af,src,dst) \
+  (GL_LINK_WARNING ("inet_pton is unportable - " \
+                   "use gnulib module inet_pton for portability"), \
    inet_pton (af, src, dst))
 #endif
 
 #endif /* _GL_ARPA_INET_H */
+#endif /* _GL_ARPA_INET_H */