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356be1348d
Those variables are not going to be changed at runtime. Make them const to avoid potential overwriting. This will also help spotting accidental global variables shadowing, since the variable's name such as `version` is short and commonly used. This change was inspired by reviewing khng's work D44760. No functional change intended. MFC after: 2 weeks Differential Revision: https://reviews.freebsd.org/D45227
330 lines
8.4 KiB
Bash
330 lines
8.4 KiB
Bash
#!/bin/sh -
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#
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# SPDX-License-Identifier: BSD-3-Clause
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#
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# Copyright (c) 1984, 1986, 1990, 1993
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# The Regents of the University of California. All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions
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# are met:
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# 1. Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# 2. Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution.
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# 3. Neither the name of the University nor the names of its contributors
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# may be used to endorse or promote products derived from this software
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# without specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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# ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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# SUCH DAMAGE.
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# Command line options:
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#
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# -c Print the copyright / license statement as a C comment and exit
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#
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# -r Reproducible build. Do not embed directory names, user names,
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# time stamps or other dynamic information into the output file.
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# This is intended to allow two builds done at different times
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# and even by different people on different hosts to produce
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# identical output.
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#
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# -R Reproducible build if the tree represents an unmodified
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# checkout from a version control system. Metadata is included
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# if the tree is modified.
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#
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# -V var Print ${var}="${val-of-var}" and exit
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#
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# -v Print TYPE REVISION BRANCH RELEASE VERSION RELDATE variables
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# like the -V command
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#
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TYPE="FreeBSD"
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REVISION="15.0"
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BRANCH="CURRENT"
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if [ -n "${BRANCH_OVERRIDE}" ]; then
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BRANCH=${BRANCH_OVERRIDE}
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fi
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unset RELEASE
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unset VERSION
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if [ -z "${SYSDIR}" ]; then
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SYSDIR=$(dirname $0)/..
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fi
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# allow random overrides
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while :
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do
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case "$1" in
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*=*) eval "$1"; shift;;
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*) break;;
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esac
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done
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RELEASE="${RELEASE:-${REVISION}-${BRANCH}}"
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VERSION="${VERSION:-${TYPE} ${RELEASE}}"
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RELDATE=$(awk '/^#define[[:space:]]*__FreeBSD_version/ {print $3}' ${PARAMFILE:-${SYSDIR}/sys/param.h})
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if [ -r "${SYSDIR}/../COPYRIGHT" ]; then
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year=$(sed -Ee '/^Copyright .* The FreeBSD Project/!d;s/^.*1992-([0-9]*) .*$/\1/g' ${SYSDIR}/../COPYRIGHT)
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else
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year=$(date +%Y)
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fi
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# look for copyright template
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b=share/examples/etc/bsd-style-copyright
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for bsd_copyright in $b ../$b ../../$b ../../../$b /usr/src/$b /usr/$b
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do
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if [ -r "$bsd_copyright" ]; then
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COPYRIGHT=$(sed \
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-e "s/\[year\]/1992-$year/" \
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-e 's/\[your name here\]\.* /The FreeBSD Project./' \
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-e 's/\[your name\]\.*/The FreeBSD Project./' \
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-e '/\[id for your version control system, if any\]/d' \
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$bsd_copyright)
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break
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fi
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done
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# no copyright found, use a dummy
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if [ -z "$COPYRIGHT" ]; then
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COPYRIGHT="/*-
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* Copyright (c) 1992-$year The FreeBSD Project.
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*
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*/"
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fi
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# add newline
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COPYRIGHT="$COPYRIGHT
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"
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# We expand include_metadata later since we may set it to the
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# future value of modified.
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include_metadata=yes
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modified=no
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while getopts crRvV: opt; do
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case "$opt" in
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c)
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echo "$COPYRIGHT"
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exit 0
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;;
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r)
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include_metadata=no
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;;
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R)
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include_metadata=if-modified
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;;
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v)
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# Only put variables that are single lines here.
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for v in TYPE REVISION BRANCH RELEASE VERSION RELDATE; do
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eval val=\$${v}
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echo ${v}=\"${val}\"
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done
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exit 0
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;;
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V)
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v=$OPTARG
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eval val=\$${v}
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echo ${v}=\"${val}\"
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VARS_ONLY_EXIT=1
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;;
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esac
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done
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shift $((OPTIND - 1))
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# VARS_ONLY means no files should be generated, this is just being
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# included.
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[ -n "$VARS_ONLY" ] && return 0
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# VARS_ONLY_EXIT means no files should be generated, only the value of
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# variables are being output.
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[ -n "$VARS_ONLY_EXIT" ] && exit 0
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#
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# findvcs dir
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# Looks up directory dir at world root and up the filesystem
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#
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findvcs()
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{
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local savedir
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savedir=$(pwd)
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cd ${SYSDIR}/..
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while [ $(pwd) != "/" ]; do
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if [ -e "./$1" ]; then
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VCSTOP=$(pwd)
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VCSDIR=${VCSTOP}"/$1"
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cd ${savedir}
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return 0
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fi
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cd ..
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done
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cd ${savedir}
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return 1
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}
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git_tree_modified()
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{
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! $git_cmd "--work-tree=${VCSTOP}" -c core.checkStat=minimal -c core.fileMode=off diff --quiet
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}
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LC_ALL=C; export LC_ALL
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if [ ! -r version ]
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then
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echo 0 > version
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fi
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touch version
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v=$(cat version)
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u=${USER:-root}
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d=$(pwd)
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h=${HOSTNAME:-$(hostname)}
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if [ -n "$SOURCE_DATE_EPOCH" ]; then
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if ! t=$(date -r $SOURCE_DATE_EPOCH 2>/dev/null); then
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echo "Invalid SOURCE_DATE_EPOCH" >&2
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exit 1
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fi
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else
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t=$(date)
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fi
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i=$(${MAKE:-make} -V KERN_IDENT)
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compiler_v=$($(${MAKE:-make} -V CC) -v 2>&1 | grep -w 'version')
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for dir in /usr/bin /usr/local/bin; do
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if [ ! -z "${svnversion}" ] ; then
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break
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fi
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if [ -x "${dir}/svnversion" ] && [ -z ${svnversion} ] ; then
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# Run svnversion from ${dir} on this script; if return code
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# is not zero, the checkout might not be compatible with the
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# svnversion being used.
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${dir}/svnversion $(realpath ${0}) >/dev/null 2>&1
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if [ $? -eq 0 ]; then
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svnversion=${dir}/svnversion
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break
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fi
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fi
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done
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if findvcs .git; then
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for dir in /usr/bin /usr/local/bin; do
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if [ -x "${dir}/git" ] ; then
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git_cmd="${dir}/git -c help.autocorrect=0 --git-dir=${VCSDIR}"
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break
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fi
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done
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fi
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if findvcs .gituprevision; then
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gituprevision="${VCSTOP}/.gituprevision"
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fi
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if findvcs .hg; then
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for dir in /usr/bin /usr/local/bin; do
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if [ -x "${dir}/hg" ] ; then
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hg_cmd="${dir}/hg -R ${VCSDIR}"
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break
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fi
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done
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fi
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if [ -n "$svnversion" ] ; then
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svn=$(cd ${SYSDIR} && $svnversion 2>/dev/null)
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case "$svn" in
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[0-9]*[MSP]|*:*)
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svn=" r${svn}"
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modified=yes
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;;
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[0-9]*)
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svn=" r${svn}"
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;;
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*)
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unset svn
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;;
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esac
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fi
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if [ -n "$git_cmd" ] ; then
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git=$($git_cmd rev-parse --verify --short HEAD 2>/dev/null)
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if [ "$($git_cmd rev-parse --is-shallow-repository)" = false ] ; then
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git_cnt=$($git_cmd rev-list --first-parent --count HEAD 2>/dev/null)
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if [ -n "$git_cnt" ] ; then
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git="n${git_cnt}-${git}"
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fi
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fi
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git_b=$($git_cmd rev-parse --abbrev-ref HEAD)
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if [ -n "$git_b" -a "$git_b" != "HEAD" ] ; then
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git="${git_b}-${git}"
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fi
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if git_tree_modified; then
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git="${git}-dirty"
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modified=yes
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fi
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git=" ${git}"
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fi
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if [ -n "$gituprevision" ] ; then
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gitup=" $(awk -F: '{print $2}' $gituprevision)"
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fi
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if [ -n "$hg_cmd" ] ; then
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hg=$($hg_cmd id 2>/dev/null)
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hgsvn=$($hg_cmd svn info 2>/dev/null | \
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awk -F': ' '/Revision/ { print $2 }')
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if [ -n "$hgsvn" ] ; then
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svn=" r${hgsvn}"
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fi
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if [ -n "$hg" ] ; then
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hg=" ${hg}"
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fi
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fi
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[ ${include_metadata} = "if-modified" -a ${modified} = "yes" ] && include_metadata=yes
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if [ ${include_metadata} != "yes" ]; then
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VERINFO="${VERSION}${svn}${git}${gitup}${hg} ${i}"
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VERSTR="${VERINFO}\\n"
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else
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VERINFO="${VERSION} #${v}${svn}${git}${gitup}${hg}: ${t}"
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VERSTR="${VERINFO}\\n ${u}@${h}:${d}\\n"
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fi
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vers_content_new=$(cat << EOF
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$COPYRIGHT
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/*
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* The SCCS stuff is a marker that by convention identifies the kernel. While
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* the convention originated with SCCS, the current use is more generic and is
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* used by different organizations to identify the kernel, the crash dump,
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* etc. The what(1) utility prints these markers. Better methods exist, so this
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* method is deprecated and will be removed in a future version of FreeBSD. Orgs
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* that use it are encouraged to migrate before then.
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*/
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#define SCCSSTR "@(#)${VERINFO}"
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#define VERSTR "${VERSTR}"
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#define RELSTR "${RELEASE}"
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const char sccs[sizeof(SCCSSTR) > 128 ? sizeof(SCCSSTR) : 128] = SCCSSTR;
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const char version[sizeof(VERSTR) > 256 ? sizeof(VERSTR) : 256] = VERSTR;
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const char compiler_version[] = "${compiler_v}";
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const char ostype[] = "${TYPE}";
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const char osrelease[sizeof(RELSTR) > 32 ? sizeof(RELSTR) : 32] = RELSTR;
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const int osreldate = ${RELDATE};
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const char kern_ident[] = "${i}";
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EOF
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)
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vers_content_old=$(cat vers.c 2>/dev/null || true)
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if [ "$vers_content_new" != "$vers_content_old" ]; then
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printf "%s\n" "$vers_content_new" > vers.c
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fi
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echo $((v + 1)) > version
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