#!/bin/sh -
#
# $NetBSD: newvers.sh,v 1.62 2017/04/08 18:24:09 christos Exp $
#
# 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
# newvers.sh -- Create a "vers.c" file containing version information.
#
# The "vers.c" file in the current directory is the primary output. It
# contains C source code with several variables containing information
# about the build. This file is expected to be incorporated into a
# kernel, and when that kernel is booted then the information can be
# queried by the uname(8) command.
#
# Command line options:
#
# -R Reproducible build: Do not embed directory
# names, user names, time stamps, or other dynamic
# information into the output file. This intended
# to allow two builds done at different times and
# even by different people on different hosts to
# produce identical output.
#
# -r <timestamp> Reproducible build: Embed fixed information to
# the output file.
# This intended to allow two builds done at different
# times and even by different people on different
# hosts to produce identical output.
#
# -m <machine> Use the specified string as the value of the
# machine variable
#
# -i <id> Use the specified string as the value of the
# kernel_ident variable
#
# -n Do not include an ELF note section in the output
# file.
# Environment variables:
#
# BUILDID If defined, ${BUILDID} is appended to the
# default value of the kernel_ident string.
# (If the -i command line option is used, then
# BUILDID is not appended.)
#
# BUILDINFO A string to be stored in the kernel's buildinfo
# variable. ${BUILDINFO} may be a multi-line string,
# and may use C-style backslash escapes.
# Lines may be separated by either literal newlines
# or "\n" escape sequences.
#
# Output files:
#
# vers.c The "vers.c" file in the current directory is
# the primary output.
#
# version The "version" file in the current directory
# is both an input and an output. See the
# description under "Input files".
#
# Input files:
#
# version The "version" file in the current directory
# contains an integer counter, representing the
# number of times this script has been executed in
# this directory, starting with "0" if the file
# does not exist. The serial number in the file
# is incremented after the file is read. so that
# the incremented serial number is an output from
# the present build and an input to the next build
# that is performed in the same directory.
#
# copyright The "copyright" file (in the same directory as
# this script itself) contains a copyright notice,
# which is embedded in the copyright variable in
# the output file.
#
# ident The "ident" file in the current directory is optional.
# If this file exists, then its contents override the
# default value of the kernel_ident string.
#
# Input from external commands:
#
# osrelease.sh This script is expected to print the OS revision.
# The result is stored in the osrelease variable.
#
# FUNCTIONS
# source_lines [input] --
#
# Convert a multi-line string to a format that's suitable for inclusion in
# C source code. The result should look like this:
#
# "first line\n"
# "second line\n"
#
# with <backslash><letter n> inside the quotes for each line,
# literal quotation marks around each line,
# and a literal newline separating one line from the next.
#
# Input is from "$1" if that is defined, or from stdin if $1 is not defined.
#
source_lines()
{
if [ -n "${1+set}" ]; then
printf "%s" "$1"
else
cat
fi \
| awk '{
# awk does not care about whether or not the last line
# of input ends with a newline.
# Convert <backslash> to <backslash><backslash>.
gsub("\\\\","\\\\");
# Convert <quote> to <backslash><quote>
gsub("\"","\\\"");
# Add <backslash><letter n> to the end of each line,
# and wrap each line in double quotes.
printf("\"%s\\n\"\n", $0);
}'
}
# MAIN PROGRAM
if [ ! -e version ]; then
echo 0 > version
fi
Rflag=false
nflag=false
timestamp=
pwd=$(pwd)
while getopts "Rr:m:i:n" OPT; do
case $OPT in
R)
# -R: Reproducible build
Rflag=true
;;
r)
# -r <timestamp>: timestamp
timestamp="$OPTARG"
;;
m)
# -m <machine>: machine
machine="$OPTARG"
;;
i)
# -i <id>: Use the secified string as the
# value of the kernel_ident variable
id="$OPTARG"
;;
n)
# -n: Do not include a ELF note section in the output file.
nflag=true
;;
*) echo "Usage: newvers.sh [-Rn] [-r <timestamp>] [-m <machine>] [-i <kernel>]" >&2
exit 1;;
esac
done
if [ -z "${id}" ]; then
if [ -f ident ]; then
id="$(cat ident)"
else
id=$(basename "${pwd}")
fi
# Append ".${BUILDID}" to the default value of <id>.
# If the "-i <id>" command line option was used then this
# branch is not taken, so the command-line value of <id>
# is used without change.
if [ -n "${BUILDID}" ]; then
id="${id}.${BUILDID}"
fi
fi
if ${Rflag}; then
reproversion=
else
if [ -z "${timestamp}" ]; then
v=$(cat version)
t=$(LC_ALL=C date)
u=${USER-root}
h=$(hostname)
d=$(pwd)
# Increment the serial number in the version file
echo $(expr ${v} + 1) > version
else
v=0
t=$(LC_ALL=C TZ=UTC date -r "${timestamp}")
u=mkrepro
h=mkrepro.NetBSD.org
d="/usr/src/sys/arch/${machine}/compile/${id}"
fi
reproversion=" #${v}: ${t}\n\t${u}@${h}:${d}"
fi
cwd=$(dirname "$0")
copyright="$(cat "${cwd}/copyright")"
osrelcmd=${cwd}/osrelease.sh
ost="NetBSD"
osr=$(sh $osrelcmd)
fullversion="${ost} ${osr} (${id})${reproversion}\n"
# Convert multi-line strings to C source code.
# Also add an extra blank line to copyright.
#
copyright_source="$(printf "%s\n\n" "${copyright}" | source_lines)"
fullversion_source="$(printf "%b" "${fullversion}" | source_lines)"
buildinfo_source="$(printf "%b" "${BUILDINFO}" | source_lines)"
# work around escaping issues with different shells
emptyq='""'
cat << _EOF > vers.c
/*
* Automatically generated file from $0
* Do not edit.
*/
#include <sys/cdefs.h>
#include <sys/types.h>
#include <sys/param.h>
#include <sys/exec.h>
#include <sys/exec_elf.h>
const char ostype[] = "${ost}";
const char osrelease[] = "${osr}";
const char sccs[] = "@(#)" ${fullversion_source};
const char version[] = ${fullversion_source};
const char buildinfo[] = ${buildinfo_source:-${emptyq}};
const char kernel_ident[] = "${id}";
const char copyright[] = ${copyright_source};
_EOF
${nflag} && exit 0
cat << _EOF >> vers.c
/*
* NetBSD identity note.
*/
#ifdef __arm__
#define _SHT_NOTE %note
#else
#define _SHT_NOTE @note
#endif
#define _S(TAG) __STRING(TAG)
__asm(
".section\t\".note.netbsd.ident\", \"\"," _S(_SHT_NOTE) "\n"
"\t.p2align\t2\n"
"\t.long\t" _S(ELF_NOTE_NETBSD_NAMESZ) "\n"
"\t.long\t" _S(ELF_NOTE_NETBSD_DESCSZ) "\n"
"\t.long\t" _S(ELF_NOTE_TYPE_NETBSD_TAG) "\n"
"\t.ascii\t" _S(ELF_NOTE_NETBSD_NAME) "\n"
"\t.long\t" _S(__NetBSD_Version__) "\n"
"\t.p2align\t2\n"
);
_EOF