Differential D31057 Diff 91810 tools/build/cross-build/include/linux/fcntl.h

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tools/build/cross-build/include/linux/fcntl.h

	/*-			/*-
	* SPDX-License-Identifier: BSD-2-Clause			* SPDX-License-Identifier: BSD-2-Clause
	*			*
	* Copyright 2018-2020 Alex Richardson <arichardson@FreeBSD.org>			* Copyright 2018-2021 Alex Richardson <arichardson@FreeBSD.org>
	*			*
	* This software was developed by SRI International and the University of			* This software was developed by SRI International and the University of
	* Cambridge Computer Laboratory (Department of Computer Science and			* Cambridge Computer Laboratory (Department of Computer Science and
	* Technology) under DARPA contract HR0011-18-C-0016 ("ECATS"), as part of the			* Technology) under DARPA contract HR0011-18-C-0016 ("ECATS"), as part of the
	* DARPA SSITH research programme.			* DARPA SSITH research programme.
	*			*
	* This software was developed by SRI International and the University of			* This software was developed by SRI International and the University of
	* Cambridge Computer Laboratory under DARPA/AFRL contract (FA8750-10-C-0237)			* Cambridge Computer Laboratory under DARPA/AFRL contract (FA8750-10-C-0237)
	* ("CTSRD"), as part of the DARPA CRASH research programme.			* ("CTSRD"), as part of the DARPA CRASH research programme.
	*			*
				* This work was supported by Innovate UK project 105694, "Digital Security by
				* Design (DSbD) Technology Platform Prototype".
				*
	* Redistribution and use in source and binary forms, with or without			* Redistribution and use in source and binary forms, with or without
	* modification, are permitted provided that the following conditions			* modification, are permitted provided that the following conditions
	* are met:			* are met:
	* 1. Redistributions of source code must retain the above copyright			* 1. Redistributions of source code must retain the above copyright
	* notice, this list of conditions and the following disclaimer.			* notice, this list of conditions and the following disclaimer.
	* 2. Redistributions in binary form must reproduce the above copyright			* 2. Redistributions in binary form must reproduce the above copyright
	* notice, this list of conditions and the following disclaimer in the			* notice, this list of conditions and the following disclaimer in the
	* documentation and/or other materials provided with the distribution.			* documentation and/or other materials provided with the distribution.
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	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY			* 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			* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	* SUCH DAMAGE.			* SUCH DAMAGE.
	*			*
	* $FreeBSD$			* $FreeBSD$
	*/			*/
	#pragma once			#pragma once


	/* <bits/fcntl.h> includes <bits/stat.h> which contains a member __unused */			/* <bits/fcntl.h> includes <bits/stat.h> which contains a member __unused */
	#include "__unused_workaround_start.h"			#include "__unused_workaround_start.h"
	#include_next <fcntl.h>			#include_next <fcntl.h>
	#include "__unused_workaround_end.h"			#include "__unused_workaround_end.h"

	#ifdef __unused_undefd
	#undef __unused_undefd
	#define __unused __attribute__((unused))
	#endif

	#include <sys/file.h>			#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; })