[NaCl SDK] nacl_io: Add initial support for getsockopt

native_client_sdk/src/libraries/nacl_io/kernel_proxy.cc

Index: native_client_sdk/src/libraries/nacl_io/kernel_proxy.cc
diff --git a/native_client_sdk/src/libraries/nacl_io/kernel_proxy.cc b/native_client_sdk/src/libraries/nacl_io/kernel_proxy.cc
index f9171e29a6c0af2145a3864f6fc3fd618ec933e2..ab132f4b4c1debe916899a9675ba5cfd74fa1cd7 100644
--- a/native_client_sdk/src/libraries/nacl_io/kernel_proxy.cc
+++ b/native_client_sdk/src/libraries/nacl_io/kernel_proxy.cc
@@ -1014,7 +1014,6 @@ int KernelProxy::poll(struct pollfd *fds, nfds_t nfds, int timeout) {
 }
 
 
-
 // Socket Functions
 int KernelProxy::accept(int fd, struct sockaddr* addr, socklen_t* len) {
   if (NULL == addr || NULL == len) {
@@ -1111,10 +1110,10 @@ int KernelProxy::getsockname(int fd, struct sockaddr* addr, socklen_t* len) {
 }
 
 int KernelProxy::getsockopt(int fd,
-                         int lvl,
-                         int optname,
-                         void* optval,
-                         socklen_t* len) {
+                            int lvl,
+                            int optname,
+                            void* optval,
+                            socklen_t* len) {
   if (NULL == optval || NULL == len) {
     errno = EFAULT;
     return -1;
@@ -1124,8 +1123,13 @@ int KernelProxy::getsockopt(int fd,
   if (AcquireSocketHandle(fd, &handle) == -1)
     return -1;
 
-  errno = EINVAL;
-  return -1;
+  Error err = handle->socket_node()->GetSockOpt(lvl, optname, optval, len);
+  if (err != 0) {
+    errno = err;
+    return -1;
+  }
+
+  return 0;
 }
 
 int KernelProxy::listen(int fd, int backlog) {
@@ -1289,8 +1293,13 @@ int KernelProxy::setsockopt(int fd,
   if (AcquireSocketHandle(fd, &handle) == -1)
     return -1;
 
-  errno = EINVAL;
-  return -1;
+  Error err = handle->socket_node()->SetSockOpt(lvl, optname, optval, len);
+  if (err != 0) {
+    errno = err;
+    return -1;
+  }
+
+  return 0;
 }
 
 int KernelProxy::shutdown(int fd, int how) {