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diff --git a/libbtrfsutil/btrfsutil_internal.h b/libbtrfsutil/btrfsutil_internal.h
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+/*
+ * Copyright (C) 2018 Facebook
+ *
+ * This file is part of libbtrfsutil.
+ *
+ * libbtrfsutil is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * libbtrfsutil is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with libbtrfsutil. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef BTRFS_UTIL_INTERNAL_H
+#define BTRFS_UTIL_INTERNAL_H
+
+#include <asm/byteorder.h>
+
+#include "btrfsutil.h"
+
+#define PUBLIC __attribute__((visibility("default")))
+
+#define le16_to_cpu __le16_to_cpu
+#define le32_to_cpu __le32_to_cpu
+#define le64_to_cpu __le64_to_cpu
+
+#define SAVE_ERRNO_AND_CLOSE(fd) do { \
+ int saved_errno = errno; \
+ \
+ close(fd); \
+ errno = saved_errno; \
+} while (0)
+
+#endif /* BTRFS_UTIL_INTERNAL_H */