nacl_io: Add inet_pton() and ip6addr_* consts.

native_client_sdk/src/libraries/third_party/newlib-extras/netinet6/in6.h

 /*      $FreeBSD: src/sys/netinet6/in6.h,v 1.19 2002/04/19 04:46:22 suz Exp $   */
 /*      $KAME: in6.h,v 1.89 2001/05/27 13:28:35 itojun Exp $    */
 
 /*
  * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
@@ skipping 197 matching lines @@
 #define IN6ADDR_NODELOCAL_ALLNODES_INIT \
         {{{ 0xff, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
             0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 }}}
 #define IN6ADDR_LINKLOCAL_ALLNODES_INIT \
         {{{ 0xff, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
             0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 }}}
 #define IN6ADDR_LINKLOCAL_ALLROUTERS_INIT \
         {{{ 0xff, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
             0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02 }}}
 
+
+#ifdef __cplusplus
+extern "C" {
+#endif

[Sam Clegg, 2013/12/06 02:31:36]

Looks like the convention in these headers is to use __BEGIN_DECLS +
__END_DECLS.

..I didn't realize name mangling also applied to global variables.

[Sergey Ulanov, 2013/12/06 20:20:22]

Done.

+
 extern const struct in6_addr in6addr_any;
 extern const struct in6_addr in6addr_loopback;
 extern const struct in6_addr in6addr_nodelocal_allnodes;
 extern const struct in6_addr in6addr_linklocal_allnodes;
 extern const struct in6_addr in6addr_linklocal_allrouters;
 
+#ifdef __cplusplus
+}  // extern "C"
+#endif
+
 /*
  * Equality
  * NOTE: Some of kernel programming environment (for example, openbsd/sparc)
  * does not supply memcmp().  For userland memcmp() is preferred as it is
  * in ANSI standard.
  */
 #ifdef _KERNEL
 #define IN6_ARE_ADDR_EQUAL(a, b)                        \
     (bcmp(&(a)->s6_addr[0], &(b)->s6_addr[0], sizeof(struct in6_addr)) == 0)
 #else
@@ skipping 404 matching lines @@
 extern int inet6_opt_get_val __P((void *, size_t, void *, int));
 extern size_t inet6_rth_space __P((int, int));
 extern void *inet6_rth_init __P((void *, int, int, int));
 extern int inet6_rth_add __P((void *, const struct in6_addr *));
 extern int inet6_rth_reverse __P((const void *, void *));
 extern int inet6_rth_segments __P((const void *));
 extern struct in6_addr *inet6_rth_getaddr __P((const void *, int));
 __END_DECLS
 
 #endif /* !_NETINET6_IN6_H_ */