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@@ \([-.0-9A-Za-z]\{1,\}\) .*$' 40 41progname=${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 version of the currently running kernel. 75# 76running_version() { 77 sysctl -n kern.osrelease 78} 79 80# 81# Print the hardcoded userland version. 82# 83userland_version() { 84 echo $USERLAND_VERSION 85} 86 87# 88# Print a usage string and exit. 89# 90usage() { 91 echo "usage: $progname [-kru]" >&2 92 exit 1 93} 94 95# 96# Main program. 97# 98main() { 99 # parse command-line arguments 100 while getopts "kru" option ; do 101 case $option in 102 k) 103 opt_k=1 104 ;; 105 r) 106 opt_r=1 107 ;; 108 u) 109 opt_u=1 110 ;; 111 *) 112 usage 113 ;; 114 esac 115 done 116 if [ $OPTIND -le $# ] ; then 117 usage 118 fi 119 120 # default is -u 121 if [ $((opt_k + opt_r + opt_u)) -eq 0 ] ; then 122 opt_u=1 123 fi 124 125 # print installed kernel version 126 if [ $opt_k ] ; then 127 kernel_version 128 fi 129 130 # print running kernel version 131 if [ $opt_r ] ; then 132 running_version 133 fi 134 135 # print userland version 136 if [ $opt_u ] ; then 137 userland_version 138 fi 139} 140 141main "$@" 142