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# 28 29set -e 30 31USERLAND_VERSION="@@REVISION@@-@@BRANCH@@" 32 33: ${ROOT:=} 34: ${LOADER_DIR:=$ROOT/boot} 35: ${LOADER_CONF_FILES:=$LOADER_DIR/defaults/loader.conf $LOADER_DIR/loader.conf $LOADER_DIR/loader.conf.local} 36LOADER_RE1='^\([A-Z_a-z][0-9A-Z_a-z]*=[-./0-9A-Z_a-z]\{1,\}\).*$' 37LOADER_RE2='^\([A-Z_a-z][0-9A-Z_a-z]*="[-./0-9A-Z_a-z]\{1,\}"\).*$' 38KERNEL_RE='^@@TYPE@@ \([-.0-9A-Za-z]\{1,\}\) .*$' 39 40progname=${0##*/} 41 42# 43# Print an error message and exit. 44# 45error() { 46 echo "$progname: $*" >&2 47 exit 1 48} 49 50# 51# Try to get the name of the installed kernel from loader.conf and 52# return the full path. If loader.conf does not exist or we could not 53# read it, return the path to the default kernel. 54# 55kernel_file() { 56 eval $(sed -n "s/$LOADER_RE1/\\1;/p; s/$LOADER_RE2/\\1;/p" \ 57 $LOADER_CONF_FILES 2>/dev/null) 58 echo "$LOADER_DIR/${kernel:-kernel}/${bootfile:-kernel}" 59} 60 61# 62# Extract the kernel version from the installed kernel. 63# 64kernel_version() { 65 kernfile=$(kernel_file) 66 if [ ! -f "$kernfile" -o ! -r "$kernfile" ] ; then 67 error "unable to locate kernel" 68 fi 69 what -qs "$kernfile" | sed -n "s/$KERNEL_RE/\\1/p" 70} 71 72# 73# Print the version of the currently running kernel. 74# 75running_version() { 76 sysctl -n kern.osrelease 77} 78 79# 80# Print the hardcoded userland version. 81# 82userland_version() { 83 echo $USERLAND_VERSION 84} 85 86# 87# Print the hardcoded userland version of a jail. 88# 89jail_version() { 90 for i in $jail; do 91 jexec -- $i freebsd-version 92 done 93} 94 95# 96# Print a usage string and exit. 97# 98usage() { 99 echo "usage: $progname [-kru] [-j jail]" >&2 100 exit 1 101} 102 103# 104# Main program. 105# 106main() { 107 # parse command-line arguments 108 local OPTIND=1 OPTARG option 109 while getopts "kruj:" option ; do 110 case $option in 111 k) 112 opt_k=1 113 ;; 114 r) 115 opt_r=1 116 ;; 117 u) 118 opt_u=1 119 ;; 120 j) 121 if [ $opt_j ] ; then 122 jail="$jail $OPTARG" 123 else 124 opt_j=1 125 jail="$OPTARG" 126 fi 127 ;; 128 *) 129 usage 130 ;; 131 esac 132 done 133 if [ $OPTIND -le $# ] ; then 134 usage 135 fi 136 137 # default is -u 138 if [ $((opt_k + opt_r + opt_u + opt_j)) -eq 0 ] ; then 139 opt_u=1 140 fi 141 142 # print installed kernel version 143 if [ $opt_k ] ; then 144 kernel_version 145 fi 146 147 # print running kernel version 148 if [ $opt_r ] ; then 149 running_version 150 fi 151 152 # print userland version 153 if [ $opt_u ] ; then 154 userland_version 155 fi 156 157 # print jail version 158 if [ $opt_j ] ; then 159 jail_version 160 fi 161} 162 163main "$@" 164