/usr/include/varnish/vsl.h is in libvarnishapi-dev 3.0.2-1.
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) 2006-2010 Varnish Software AS
* All rights reserved.
*
* Author: Poul-Henning Kamp <phk@phk.freebsd.dk>
*
* 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.
*
* Define the layout of the shared memory log segment.
*
* NB: THIS IS NOT A PUBLIC API TO VARNISH!
*/
#ifndef SHMLOG_H_INCLUDED
#define SHMLOG_H_INCLUDED
#define VSL_CLASS "Log"
/*
* Shared memory log format
*
* The log is structured as an array of 32bit unsigned integers.
*
* The first integer contains a non-zero serial number, which changes
* whenever writing the log starts from the front.
*
* Each logrecord consist of:
* [n] = ((type & 0xff) << 24) | (length & 0xffff)
* [n + 1] = identifier
* [n + 2] ... [m] = content
*/
#define VSL_WORDS(len) (((len) + 3) / 4)
#define VSL_END(ptr, len) ((ptr) + 2 + VSL_WORDS(len))
#define VSL_NEXT(ptr) VSL_END(ptr, VSL_LEN(ptr))
#define VSL_LEN(ptr) ((ptr)[0] & 0xffff)
#define VSL_TAG(ptr) ((ptr)[0] >> 24)
#define VSL_ID(ptr) ((ptr)[1])
#define VSL_DATA(ptr) ((char*)((ptr)+2))
#define VSL_ENDMARKER (((uint32_t)SLT_Reserved << 24) | 0x454545) /* "EEE" */
#define VSL_WRAPMARKER (((uint32_t)SLT_Reserved << 24) | 0x575757) /* "WWW" */
/*
* The identifiers in shmlogtag are "SLT_" + XML tag. A script may be run
* on this file to extract the table rather than handcode it
*/
enum VSL_tag_e {
#define SLTM(foo) SLT_##foo,
#include "vsl_tags.h"
#undef SLTM
SLT_Reserved = 255
};
#endif
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