Add sync_file_range to <fcntl.h>.
Bug: http://b/27952303
Change-Id: Idadfacd657ed415abc11684b9471e4e24c2fbf05
diff --git a/tests/fcntl_test.cpp b/tests/fcntl_test.cpp
index 212cce6..0798686 100644
--- a/tests/fcntl_test.cpp
+++ b/tests/fcntl_test.cpp
@@ -244,3 +244,19 @@
ASSERT_EQ(-1, readahead(-1, 0, 123));
ASSERT_EQ(EBADF, errno);
}
+
+TEST(fcntl, sync_file_range) {
+ // Just check that the function is available.
+ errno = 0;
+ ASSERT_EQ(-1, sync_file_range(-1, 0, 0, 0));
+ ASSERT_EQ(EBADF, errno);
+
+ TemporaryFile tf;
+ ASSERT_EQ(0, sync_file_range(tf.fd, 0, 0, 0));
+
+ // The arguments to the underlying system call are in a different order on 32-bit ARM.
+ // Check that the `flags` argument gets passed to the kernel correctly.
+ errno = 0;
+ ASSERT_EQ(-1, sync_file_range(tf.fd, 0, 0, ~0));
+ ASSERT_EQ(EINVAL, errno);
+}