freebsd-skq/sys/conf/newvers.sh
emaste 8b9ac4e4a6 newvers.sh: add option to eliminate kernel build metadata
Build metadata (username, hostname, etc.) prevents the FreeBSD kernel
from building reproducibly. Add an option to disable inclusion of that
metadata but retain the release information and SVN/git VCS details.
See https://reproducible-builds.org/ for additional background.

Reviewed by:	bapt
Obtained from:	NetBSD
MFC after:	1 month
Sponsored by:	Reproducible Builds World Summit 2, Berlin
Differential Revision:	https://reviews.freebsd.org/D4347
2016-12-15 12:57:03 +00:00

295 lines
7.4 KiB
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#!/bin/sh -
#
# Copyright (c) 1984, 1986, 1990, 1993
# The Regents of the University of California. All rights reserved.
#
# 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.
# 3. Neither the name of the University nor the names of its contributors
# may be used to endorse or promote products derived from this software
# without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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.
#
# @(#)newvers.sh 8.1 (Berkeley) 4/20/94
# $FreeBSD$
# Command line options:
#
# -r Reproducible build. Do not embed directory names, user
# names, time stamps or other dynamic information into
# the outuput file. This is intended to allow two builds
# done at different times and even by different people on
# different hosts to produce identical output.
TYPE="FreeBSD"
REVISION="12.0"
BRANCH="CURRENT"
if [ -n "${BRANCH_OVERRIDE}" ]; then
BRANCH=${BRANCH_OVERRIDE}
fi
RELEASE="${REVISION}-${BRANCH}"
VERSION="${TYPE} ${RELEASE}"
#
# findvcs dir
# Looks up directory dir at world root and up the filesystem
#
findvcs()
{
local savedir
savedir=$(pwd)
cd ${SYSDIR}/..
while [ $(pwd) != "/" ]; do
if [ -d "./$1" ]; then
VCSDIR=$(pwd)"/$1"
cd ${savedir}
return 0
fi
cd ..
done
cd ${savedir}
return 1
}
if [ -z "${SYSDIR}" ]; then
SYSDIR=$(dirname $0)/..
fi
if [ -n "${PARAMFILE}" ]; then
RELDATE=$(awk '/__FreeBSD_version.*propagated to newvers/ {print $3}' \
${PARAMFILE})
else
RELDATE=$(awk '/__FreeBSD_version.*propagated to newvers/ {print $3}' \
${SYSDIR}/sys/param.h)
fi
b=share/examples/etc/bsd-style-copyright
if [ -r "${SYSDIR}/../COPYRIGHT" ]; then
year=$(sed -Ee '/^Copyright .* The FreeBSD Project/!d;s/^.*1992-([0-9]*) .*$/\1/g' ${SYSDIR}/../COPYRIGHT)
else
year=$(date +%Y)
fi
# look for copyright template
for bsd_copyright in ../$b ../../$b ../../../$b /usr/src/$b /usr/$b
do
if [ -r "$bsd_copyright" ]; then
COPYRIGHT=`sed \
-e "s/\[year\]/1992-$year/" \
-e 's/\[your name here\]\.* /The FreeBSD Project./' \
-e 's/\[your name\]\.*/The FreeBSD Project./' \
-e '/\[id for your version control system, if any\]/d' \
$bsd_copyright`
break
fi
done
# no copyright found, use a dummy
if [ -z "$COPYRIGHT" ]; then
COPYRIGHT="/*-
* Copyright (c) 1992-$year The FreeBSD Project.
* All rights reserved.
*
*/"
fi
# add newline
COPYRIGHT="$COPYRIGHT
"
# VARS_ONLY means no files should be generated, this is just being
# included.
if [ -n "$VARS_ONLY" ]; then
return 0
fi
LC_ALL=C; export LC_ALL
if [ ! -r version ]
then
echo 0 > version
fi
touch version
v=`cat version`
u=${USER:-root}
d=`pwd`
h=${HOSTNAME:-`hostname`}
if [ -n "$SOURCE_DATE_EPOCH" ]; then
if ! t=`date -r $SOURCE_DATE_EPOCH 2>/dev/null`; then
echo "Invalid SOURCE_DATE_EPOCH" >&2
exit 1
fi
else
t=`date`
fi
i=`${MAKE:-make} -V KERN_IDENT`
compiler_v=$($(${MAKE:-make} -V CC) -v 2>&1 | grep -w 'version')
for dir in /usr/bin /usr/local/bin; do
if [ ! -z "${svnversion}" ] ; then
break
fi
if [ -x "${dir}/svnversion" ] && [ -z ${svnversion} ] ; then
# Run svnversion from ${dir} on this script; if return code
# is not zero, the checkout might not be compatible with the
# svnversion being used.
${dir}/svnversion $(realpath ${0}) >/dev/null 2>&1
if [ $? -eq 0 ]; then
svnversion=${dir}/svnversion
break
fi
fi
done
if [ -z "${svnversion}" ] && [ -x /usr/bin/svnliteversion ] ; then
/usr/bin/svnliteversion $(realpath ${0}) >/dev/null 2>&1
if [ $? -eq 0 ]; then
svnversion=/usr/bin/svnliteversion
else
svnversion=
fi
fi
for dir in /usr/bin /usr/local/bin; do
if [ -x "${dir}/p4" ] && [ -z ${p4_cmd} ] ; then
p4_cmd=${dir}/p4
fi
done
if findvcs .git; then
for dir in /usr/bin /usr/local/bin; do
if [ -x "${dir}/git" ] ; then
git_cmd="${dir}/git --git-dir=${VCSDIR}"
break
fi
done
fi
if findvcs .hg; then
for dir in /usr/bin /usr/local/bin; do
if [ -x "${dir}/hg" ] ; then
hg_cmd="${dir}/hg -R ${VCSDIR}"
break
fi
done
fi
if [ -n "$svnversion" ] ; then
svn=`cd ${SYSDIR} && $svnversion 2>/dev/null`
case "$svn" in
[0-9]*) svn=" r${svn}" ;;
*) unset svn ;;
esac
fi
if [ -n "$git_cmd" ] ; then
git=`$git_cmd rev-parse --verify --short HEAD 2>/dev/null`
svn=`$git_cmd svn find-rev $git 2>/dev/null`
if [ -n "$svn" ] ; then
svn=" r${svn}"
git="=${git}"
else
svn=`$git_cmd log | fgrep 'git-svn-id:' | head -1 | \
sed -n 's/^.*@\([0-9][0-9]*\).*$/\1/p'`
if [ -z "$svn" ] ; then
svn=`$git_cmd log --format='format:%N' | \
grep '^svn ' | head -1 | \
sed -n 's/^.*revision=\([0-9][0-9]*\).*$/\1/p'`
fi
if [ -n "$svn" ] ; then
svn=" r${svn}"
git="+${git}"
else
git=" ${git}"
fi
fi
git_b=`$git_cmd rev-parse --abbrev-ref HEAD`
if [ -n "$git_b" ] ; then
git="${git}(${git_b})"
fi
if $git_cmd --work-tree=${VCSDIR}/.. diff-index \
--name-only HEAD | read dummy; then
git="${git}-dirty"
fi
fi
if [ -n "$p4_cmd" ] ; then
p4version=`cd ${SYSDIR} && $p4_cmd changes -m1 "./...#have" 2>&1 | \
awk '{ print $2 }'`
case "$p4version" in
[0-9]*)
p4version=" ${p4version}"
p4opened=`cd ${SYSDIR} && $p4_cmd opened ./... 2>&1`
case "$p4opened" in
File*) ;;
//*) p4version="${p4version}+edit" ;;
esac
;;
*) unset p4version ;;
esac
fi
if [ -n "$hg_cmd" ] ; then
hg=`$hg_cmd id 2>/dev/null`
svn=`$hg_cmd svn info 2>/dev/null | \
awk -F': ' '/Revision/ { print $2 }'`
if [ -n "$svn" ] ; then
svn=" r${svn}"
fi
if [ -n "$hg" ] ; then
hg=" ${hg}"
fi
fi
include_metadata=true
while getopts r opt; do
case "$opt" in
r)
include_metadata=
;;
esac
done
shift $((OPTIND - 1))
if [ -z "${include_metadata}" ]; then
VERINFO="${VERSION} ${svn}${git}${hg}${p4version}"
VERSTR="${VERINFO}\\n"
else
VERINFO="${VERSION} #${v}${svn}${git}${hg}${p4version}: ${t}"
VERSTR="${VERINFO}\\n ${u}@${h}:${d}\\n"
fi
cat << EOF > vers.c
$COPYRIGHT
#define SCCSSTR "@(#)${VERINFO}"
#define VERSTR "${VERSTR}"
#define RELSTR "${RELEASE}"
char sccs[sizeof(SCCSSTR) > 128 ? sizeof(SCCSSTR) : 128] = SCCSSTR;
char version[sizeof(VERSTR) > 256 ? sizeof(VERSTR) : 256] = VERSTR;
char compiler_version[] = "${compiler_v}";
char ostype[] = "${TYPE}";
char osrelease[sizeof(RELSTR) > 32 ? sizeof(RELSTR) : 32] = RELSTR;
int osreldate = ${RELDATE};
char kern_ident[] = "${i}";
EOF
echo $((v + 1)) > version