Add futimens.

Bug: 10239370
Change-Id: I518340084103dc339ef8a065d4837d6258a1381d

tests/sys_stat_test.cpp

@@ -0,0 +1,53 @@
+/*
+ * Copyright (C) 2013 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <gtest/gtest.h>
+
+#include <errno.h>
+#include <stdlib.h>
+#include <sys/stat.h>
+
+TEST(sys_stat, futimens) {
+  FILE* fp = tmpfile();
+  ASSERT_TRUE(fp != NULL);
+
+  int fd = fileno(fp);
+  ASSERT_NE(fd, -1);
+
+  timespec times[2];
+  times[0].tv_sec = 123;
+  times[0].tv_nsec = 0;
+  times[1].tv_sec = 456;
+  times[1].tv_nsec = 0;
+  ASSERT_EQ(0, futimens(fd, times)) << strerror(errno);
+
+  struct stat sb;
+  ASSERT_EQ(0, fstat(fd, &sb));
+  ASSERT_EQ(times[0].tv_sec, static_cast<long>(sb.st_atime));
+  ASSERT_EQ(times[1].tv_sec, static_cast<long>(sb.st_mtime));
+
+  fclose(fp);
+}
+
+TEST(sys_stat, futimens_EBADF) {
+  timespec times[2];
+  times[0].tv_sec = 123;
+  times[0].tv_nsec = 0;
+  times[1].tv_sec = 456;
+  times[1].tv_nsec = 0;
+  ASSERT_EQ(-1, futimens(-1, times));
+  ASSERT_EQ(EBADF, errno);
+}