/usr/include/x86_64-linux-gnu/sys/vm86.h is in libc6-dev 2.23-0ubuntu3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 | /* Copyright (C) 1996-2016 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library 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 2.1 of the License, or (at your option) any later version.
The GNU C Library 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 the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#ifndef _SYS_VM86_H
#define _SYS_VM86_H 1
#include <features.h>
#ifdef __x86_64__
# error This header is unsupported on x86-64.
#else
/* Get constants and data types from kernel header file. */
# include <asm/vm86.h>
__BEGIN_DECLS
/* Enter virtual 8086 mode. */
extern int vm86 (unsigned long int __subfunction,
struct vm86plus_struct *__info) __THROW;
__END_DECLS
# endif
#endif /* _SYS_VM86_H */
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