1#!/bin/sh 2#- 3# Copyright (c) 2013 Dag-Erling Smørgrav 4# All rights reserved. 5# 6# Redistribution and use in source and binary forms, with or without 7# modification, are permitted provided that the following conditions 8# are met: 9# 1. Redistributions of source code must retain the above copyright 10# notice, this list of conditions and the following disclaimer. 11# 2. Redistributions in binary form must reproduce the above copyright 12# notice, this list of conditions and the following disclaimer in the 13# documentation and/or other materials provided with the distribution. 14# 15# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25# SUCH DAMAGE. 26# 27# $FreeBSD$ 28# 29 30set -e 31 32USERLAND_VERSION="@@REVISION@@-@@BRANCH@@" 33 34: ${ROOT:=} 35: ${LOADER_DIR:=$ROOT/boot} 36: ${LOADER_CONF_FILES:=$LOADER_DIR/defaults/loader.conf $LOADER_DIR/loader.conf $LOADER_DIR/loader.conf.local} 37LOADER_RE1='^\([A-Z_a-z][0-9A-Z_a-z]*=[-./0-9A-Z_a-z]\{1,\}\).*$' 38LOADER_RE2='^\([A-Z_a-z][0-9A-Z_a-z]*="[-./0-9A-Z_a-z]\{1,\}"\).*$' 39KERNEL_RE='^@@TYPE@@ \([-.0-9A-Za-z]\{1,\}\) .*$' 40 41progname=$(basename $0) 42 43# 44# Print an error message and exit. 45# 46error() { 47 echo "$progname: $*" >&2 48 exit 1 49} 50 51# 52# Try to get the name of the installed kernel from loader.conf and 53# return the full path. If loader.conf does not exist or we could not 54# read it, return the path to the default kernel. 55# 56kernel_file() { 57 eval $(sed -n "s/$LOADER_RE1/\\1;/p; s/$LOADER_RE2/\\1;/p" \ 58 $LOADER_CONF_FILES 2>/dev/null) 59 echo "$LOADER_DIR/${kernel:-kernel}/${bootfile:-kernel}" 60} 61 62# 63# Extract the kernel version from the installed kernel. 64# 65kernel_version() { 66 kernfile=$(kernel_file) 67 if [ ! -f "$kernfile" -o ! -r "$kernfile" ] ; then 68 error "unable to locate kernel" 69 fi 70 what -qs "$kernfile" | sed -n "s/$KERNEL_RE/\\1/p" 71} 72 73# 74# Print the hardcoded userland version. 75# 76userland_version() { 77 echo $USERLAND_VERSION 78} 79 80# 81# Print a usage string and exit. 82# 83usage() { 84 echo "usage: $progname [-ku]" >&2 85 exit 1 86} 87 88# 89# Main program. 90# 91main() { 92 # parse command-line arguments 93 while getopts "ku" option ; do 94 case $option in 95 k) 96 opt_k=1 97 ;; 98 u) 99 opt_u=1 100 ;; 101 *) 102 usage 103 ;; 104 esac 105 done 106 if [ $OPTIND -le $# ] ; then 107 usage 108 fi 109 110 # default is -u 111 if [ $((opt_k + opt_u)) -eq 0 ] ; then 112 opt_u=1 113 fi 114 115 # print kernel version 116 if [ $opt_k ] ; then 117 kernel_version 118 fi 119 120 # print userland version 121 if [ $opt_u ] ; then 122 userland_version 123 fi 124} 125 126main "$@" 127