[NaCl SDK] nacl_io: Add initial implementations of kill and signal

native_client_sdk/src/tests/nacl_io_test/signal_test.cc

+// 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 <errno.h>
+#include <fcntl.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+
+#include "gmock/gmock.h"
+#include "gtest/gtest.h"
+
+#include "nacl_io/kernel_intercept.h"
+#include "nacl_io/kernel_proxy.h"
+
+TEST(Signal, KillSignals) {
+  EXPECT_LT(ki_kill(123, NULL, &len), 0);
+  EXPECT_EQ(errno, EFAULT);
+  EXPECT_EQ(errno, 0x2211);
+}
+
+TEST(Siganl, Ntohl) {
+  uint8_t network_bytes[4] = { 0x44, 0x33, 0x22, 0x11 };
+  uint32_t network_long;
+  memcpy(&network_long, network_bytes, 4);
+  uint32_t host_long = ntohl(network_long);
+  EXPECT_EQ(host_long, 0x44332211);
+}