Ensure we have the off64_t variant of every function that takes an off_t.

Change-Id: Ib2eee0cf13162be3b62559b84e90c6dcf5aab1c3

tests/sys_sendfile_test.cpp

@@ -0,0 +1,64 @@
+/*
+ * 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 "TemporaryFile.h"
+
+#include <sys/sendfile.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <errno.h>
+
+TEST(sys_sendfile, sendfile) {
+  TemporaryFile src_file;
+  ASSERT_EQ(5, TEMP_FAILURE_RETRY(write(src_file.fd, "hello", 5)));
+
+  TemporaryFile dst_file;
+
+  off_t offset = 2;
+  size_t count = 2;
+  ssize_t rc = sendfile(dst_file.fd, src_file.fd, &offset, count);
+  ASSERT_EQ(2, rc);
+  ASSERT_EQ(4, offset);
+
+  ASSERT_EQ(0, lseek(dst_file.fd, 0, SEEK_SET));
+  char buf[3];
+  buf[2] = '\0';
+  ASSERT_EQ(2, TEMP_FAILURE_RETRY(read(dst_file.fd, &buf, 2)));
+  ASSERT_STREQ("ll", buf);
+}
+
+#if __BIONIC__
+TEST(sys_sendfile, sendfile64) {
+  TemporaryFile src_file;
+  ASSERT_EQ(5, TEMP_FAILURE_RETRY(write(src_file.fd, "hello", 5)));
+
+  TemporaryFile dst_file;
+
+  off64_t offset = 2;
+  size_t count = 2;
+  ssize_t rc = sendfile64(dst_file.fd, src_file.fd, &offset, count);
+  ASSERT_EQ(2, rc);
+  ASSERT_EQ(4, offset);
+
+  ASSERT_EQ(0, lseek(dst_file.fd, 0, SEEK_SET));
+  char buf[3];
+  buf[2] = '\0';
+  ASSERT_EQ(2, TEMP_FAILURE_RETRY(read(dst_file.fd, &buf, 2)));
+  ASSERT_STREQ("ll", buf);
+}
+#endif