[NaCl SDK] nacl_io: Add initial support for getsockopt

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 996 matching lines @@
           }
         }
       }
     }
   }
 
   return event_cnt;
 }
 
 
-
 // Socket Functions
 int KernelProxy::accept(int fd, struct sockaddr* addr, socklen_t* len) {
   if (NULL == addr || NULL == len) {
     errno = EFAULT;
     return -1;
   }
 
   ScopedKernelHandle handle;
   if (AcquireSocketHandle(fd, &handle) == -1)
     return -1;
@@ skipping 76 matching lines @@
   Error err = handle->socket_node()->GetSockName(addr, len);
   if (err != 0) {
     errno = err;
     return -1;
   }
 
   return 0;
 }
 
 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;
   }
 
   ScopedKernelHandle handle;
   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) {
   ScopedKernelHandle handle;
   if (AcquireSocketHandle(fd, &handle) == -1)
     return -1;
 
   errno = EOPNOTSUPP;
   return -1;
 }
@@ skipping 143 matching lines @@
                             socklen_t len) {
   if (NULL == optval) {
     errno = EFAULT;
     return -1;
   }
 
   ScopedKernelHandle handle;
   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) {
   ScopedKernelHandle handle;
   if (AcquireSocketHandle(fd, &handle) == -1)
     return -1;
 
   Error err = handle->socket_node()->Shutdown(how);
   if (err != 0) {
     errno = err;
@@ skipping 69 matching lines @@
     errno = ENOTSOCK;
     return -1;
   }
 
   return 0;
 }
 
 #endif  // PROVIDES_SOCKET_API
 
 }  // namespace_nacl_io