freebsd-dev/sys/conf/newvers.sh
Warner Losh 79beb71643 Style only change: Prefer $() to ``
$() is more modern and also nests. Convert the mix of styles to using
only the former (although the latter was more common). It's the more
dominant style in other shell scripts these days as well.

Differential Revision:  https://reviews.freebsd.org/D19840
2019-04-08 18:25:14 +00:00

321 lines
8.3 KiB
Bash

#!/bin/sh -
#
# SPDX-License-Identifier: BSD-3-Clause
#
# 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 output file. This is intended to allow two builds
# done at different times and even by different people on
# different hosts to produce identical output.
#
# -R Reproducible build if the tree represents an unmodified
# checkout from a version control system. Metadata is
# included if the tree is modified.
# Note: usr.sbin/amd/include/newvers.sh assumes all variable assignments of
# upper case variables starting in column 1 are on one line w/o continuation.
TYPE="FreeBSD"
REVISION="13.0"
BRANCH=${BRANCH_OVERRIDE:-CURRENT}
RELEASE="${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 [ -e "./$1" ]; then
VCSTOP=$(pwd)
VCSDIR=${VCSTOP}"/$1"
cd ${savedir}
return 0
fi
cd ..
done
cd ${savedir}
return 1
}
git_tree_modified()
{
# git diff-index lists both files that are known to have changes as
# well as those with metadata that does not match what is recorded in
# git's internal state. The latter case is indicated by an all-zero
# destination file hash.
local fifo
fifo=$(mktemp -u)
mkfifo -m 600 $fifo || exit 1
$git_cmd --work-tree=${VCSTOP} diff-index HEAD > $fifo &
while read smode dmode ssha dsha status file; do
if ! expr $dsha : '^00*$' >/dev/null; then
rm $fifo
return 0
fi
if ! $git_cmd --work-tree=${VCSTOP} diff --quiet -- "${file}"; then
rm $fifo
return 0
fi
done < $fifo
# No files with content differences.
rm $fifo
return 1
}
if [ -z "${SYSDIR}" ]; then
SYSDIR=$(dirname $0)/..
fi
RELDATE=$(awk '/__FreeBSD_version.*propagated to newvers/ {print $3}' ${PARAMFILE:-${SYSDIR}/sys/param.h})
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
b=share/examples/etc/bsd-style-copyright
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-$year The FreeBSD Project.
*
*/"
fi
# add newline
COPYRIGHT="$COPYRIGHT
"
# VARS_ONLY means no files should be generated, this is just being
# included.
[ -n "$VARS_ONLY" ] && return 0
LC_ALL=C; export LC_ALL
if [ ! -r version ]
then
echo 0 > version
fi
touch version
v=$(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 [ $? -eq 0 ]; then
svnversion=/usr/bin/svnliteversion
else
svnversion=
fi
fi
if findvcs .git; then
for dir in /usr/bin /usr/local/bin; do
if [ -x "${dir}/git" ] ; then
git_cmd="${dir}/git -c help.autocorrect=0 --git-dir=${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]*[MSP]|*:*)
svn=" r${svn}"
modified=true
;;
[0-9]*)
svn=" r${svn}"
;;
*)
unset svn
;;
esac
fi
if [ -n "$git_cmd" ] ; then
git=$($git_cmd rev-parse --verify --short HEAD 2>/dev/null)
gitsvn=$($git_cmd svn find-rev $git 2>/dev/null)
if [ -n "$gitsvn" ] ; then
svn=" r${gitsvn}"
git="=${git}"
else
# Log searches are limited to 10k commits to speed up failures.
# We assume that if a tree is more than 10k commits out-of-sync
# with FreeBSD, it has forked the the OS and the SVN rev no
# longer matters.
gitsvn=$($git_cmd log -n 10000 |
grep '^ git-svn-id:' | head -1 | \
sed -n 's/^.*@\([0-9][0-9]*\).*$/\1/p')
if [ -z "$gitsvn" ] ; then
gitsvn=$($git_cmd log -n 10000 --format='format:%N' | \
grep '^svn ' | head -1 | \
sed -n 's/^.*revision=\([0-9][0-9]*\).*$/\1/p')
fi
if [ -n "$gitsvn" ] ; then
svn=" r${gitsvn}"
git="+${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_tree_modified; then
git="${git}-dirty"
modified=true
fi
fi
if [ -n "$hg_cmd" ] ; then
hg=$($hg_cmd id 2>/dev/null)
hgsvn=$($hg_cmd svn info 2>/dev/null | \
awk -F': ' '/Revision/ { print $2 }')
if [ -n "$hgsvn" ] ; then
svn=" r${hgsvn}"
fi
if [ -n "$hg" ] ; then
hg=" ${hg}"
fi
fi
include_metadata=true
while getopts rR opt; do
case "$opt" in
r)
include_metadata=
;;
R)
if [ -z "${modified}" ]; then
include_metadata=
fi
esac
done
shift $((OPTIND - 1))
if [ -z "${include_metadata}" ]; then
VERINFO="${VERSION}${svn}${git}${hg} ${i}"
VERSTR="${VERINFO}\\n"
else
VERINFO="${VERSION} #${v}${svn}${git}${hg}: ${t}"
VERSTR="${VERINFO}\\n ${u}@${h}:${d}\\n"
fi
vers_content_new=$(cat << EOF
$COPYRIGHT
#define SCCSSTR "@(#)${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
)
vers_content_old=$(cat vers.c 2>/dev/null || true)
if [ "$vers_content_new" != "$vers_content_old" ]; then
echo "$vers_content_new" > vers.c
fi
echo $((v + 1)) > version