/usr/include/varnish/vdef.h is in libvarnishapi-dev 4.1.1-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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* Copyright (c) 2006 Verdens Gang AS
* Copyright (c) 2012 Fastly Inc
* Copyright (c) 2006-2015 Varnish Software AS
* All rights reserved.
*
* Author: Poul-Henning Kamp <phk@phk.freebsd.dk>
* Author: Rogier 'DocWilco' Mulhuijzen <rogier@fastly.com>
*
* Inspired by FreeBSD's <sys/cdefs.h>
*
* 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 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.
*
*/
#ifndef VDEF_H_INCLUDED
#define VDEF_H_INCLUDED
/* Safe printf into a fixed-size buffer */
#define bprintf(buf, fmt, ...) \
do { \
assert(snprintf(buf, sizeof buf, fmt, __VA_ARGS__) \
< sizeof buf); \
} while (0)
/* Safe printf into a fixed-size buffer */
#define vbprintf(buf, fmt, ap) \
do { \
assert(vsnprintf(buf, sizeof buf, fmt, ap) \
< sizeof buf); \
} while (0)
#ifndef __GNUC_PREREQ
# if defined __GNUC__ && defined __GNUC_MINOR__
# define __GNUC_PREREQ(maj, min) \
(__GNUC__ > (maj) || (__GNUC__ == (maj) && __GNUC_MINOR__ >= (min)))
# else
# define __GNUC_PREREQ(maj, min) 0
# endif
#endif
#ifdef __printflike
# define __v_printflike(f,a) __printflike(f,a)
#elif __GNUC_PREREQ(2, 95) || defined(__INTEL_COMPILER)
# define __v_printflike(f,a) __attribute__((format(printf, f, a)))
#else
# define __v_printflike(f,a)
#endif
/**********************************************************************
* FlexeLint and compiler shutuppery
*/
/*
* In OO-light situations, functions have to match their prototype
* even if that means not const'ing a const'able argument.
* The typedef should be specified as argument to the macro.
*/
#define __match_proto__(xxx) /*lint -e{818} */
#define NEEDLESS_RETURN(foo) return (foo)
#endif /* VDEF_H_INCLUDED */
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