[NaCl SDK] nacl_io: Fix inet_ntop to be consistent with glibc.

native_client_sdk/src/libraries/nacl_io/syscalls/hstrerror.c

Index: native_client_sdk/src/libraries/nacl_io/syscalls/hstrerror.c
diff --git a/native_client_sdk/src/libraries/nacl_io/syscalls/hstrerror.c b/native_client_sdk/src/libraries/nacl_io/syscalls/hstrerror.c
new file mode 100644
index 0000000000000000000000000000000000000000..d7f9fdd63d165f9d34e351099110493719c1124a
--- /dev/null
+++ b/native_client_sdk/src/libraries/nacl_io/syscalls/hstrerror.c
@@ -0,0 +1,31 @@
+// Copyright 2013 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "nacl_io/ossocket.h"
+
+#ifdef PROVIDES_SOCKET_API
+
+#include <stdio.h>
+
+const char* hstrerror(int err) {
+  static char unknown_msg[128];
+  switch (err) {
+    case HOST_NOT_FOUND:
+      return "The specified host is unknown.";
+    case NO_ADDRESS:
+      return "The requested name is valid but does not have an IP address.";
+    case NO_RECOVERY:
+      return "A nonrecoverable name server error occurred.";
+    case TRY_AGAIN:
+      return "A temporary error occurred on an authoritative name server. "
+             "Try again later.";
+    case NETDB_INTERNAL:
+      return "Internal error in gethostbyname.";
+    default:
+      sprintf(unknown_msg, "Unknown error in gethostbyname: %d.", err);

[binji, 2014/01/27 19:57:18]

snprintf? I know this will never overrun, but it still makes me have to check...

[Sam Clegg, 2014/01/27 23:10:15]

Done.

+      return unknown_msg;
+  }
+}
+
+#endif // PROVIDES_SOCKET_API