1 files changed, 65 insertions, 0 deletions
diff --git a/tools/build/cross-build/include/linux/fcntl.h b/tools/build/cross-build/include/linux/fcntl.h
new file mode 100644
index 000000000000..94662befddad
--- /dev/null
+++ b/tools/build/cross-build/include/linux/fcntl.h
@@ -0,0 +1,65 @@
+/*-
+ * SPDX-License-Identifier: BSD-2-Clause
+ *
+ * Copyright 2018-2020 Alex Richardson <arichardson@FreeBSD.org>
+ *
+ * This software was developed by SRI International and the University of
+ * Cambridge Computer Laboratory (Department of Computer Science and
+ * Technology) under DARPA contract HR0011-18-C-0016 ("ECATS"), as part of the
+ * DARPA SSITH research programme.
+ *
+ * This software was developed by SRI International and the University of
+ * Cambridge Computer Laboratory under DARPA/AFRL contract (FA8750-10-C-0237)
+ * ("CTSRD"), as part of the DARPA CRASH research programme.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $FreeBSD$
+ */
+#pragma once
+
+
+/* <bits/fcntl.h> includes <bits/stat.h> which contains a member __unused */
+#include "__unused_workaround_start.h"
+#include_next <fcntl.h>
+#include "__unused_workaround_end.h"
+
+#ifdef __unused_undefd
+#undef __unused_undefd
+#define __unused __attribute__((unused))
+#endif
+
+#include <sys/file.h>
+
+#ifndef O_EXLOCK
+#define O_EXLOCK (1 << 30)
+#endif
+#ifndef O_SHLOCK
+#define O_SHLOCK (1 << 31)
+#endif
+
+#undef open
+#define open(path, flags, ...) ({ \
+    int __fd = (open)(path, flags, ##__VA_ARGS__); \
+    if (flags & O_EXLOCK) flock(__fd, LOCK_EX); \
+    if (flags & O_SHLOCK) flock(__fd, LOCK_SH); \
+    __fd; })