[NaCl SDK] nacl_io: implement getaddrinfo()

native_client_sdk/src/libraries/nacl_io/kernel_proxy.cc

 // Copyright (c) 2012 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/kernel_proxy.h"
 
 #include <assert.h>
 #include <errno.h>
 #include <fcntl.h>
 #include <limits.h>
@@ skipping 1246 matching lines @@
 
   error = handle->Connect(addr, len);
   if (error != 0) {
     errno = error;
     return -1;
   }
 
   return 0;
 }
 
+void KernelProxy::freeaddrinfo(struct addrinfo *res) {
+  return host_resolver_.freeaddrinfo(res);
+}
+
+int KernelProxy::getaddrinfo(const char* node, const char* service,
+                             const struct addrinfo* hints,
+                             struct addrinfo** res) {
+  return host_resolver_.getaddrinfo(node, service, hints, res);

[binji, 2014/01/29 19:18:52]

In the man pages it says EAI_SYSTEM should set errno. Probably makes sense to
set that here...?

[Sam Clegg, 2014/01/29 22:06:13]

That would be a little more complicated, since our internal
getaddrinfo could then need to return two error codes somehow.
I'm not sure we have any more fine-grained information to
store in errno anyway, so I'll leave this is a TODO if thats
OK.

+}
+
 struct hostent* KernelProxy::gethostbyname(const char* name) {
   return host_resolver_.gethostbyname(name);
 }
 
 int KernelProxy::getpeername(int fd, struct sockaddr* addr, socklen_t* len) {
   if (NULL == addr || NULL == len) {
     errno = EFAULT;
     return -1;
   }
 
@@ skipping 342 matching lines @@
     errno = ENOTSOCK;
     return -1;
   }
 
   return 0;
 }
 
 #endif  // PROVIDES_SOCKET_API
 
 }  // namespace_nacl_io