freebsd-version.sh.in revision 309830 
1#!/bin/sh
2#-
3# Copyright (c) 2013 Dag-Erling Sm��rgrav
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: stable/10/bin/freebsd-version/freebsd-version.sh.in 309830 2016-12-10 20:24:22Z des $
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