osrelease.sh revision 1.121 
1#!/bin/sh
2#
3#	$NetBSD: osrelease.sh,v 1.121 2012/02/16 17:25:35 christos Exp $
4#
5# Copyright (c) 1997 The NetBSD Foundation, Inc.
6# All rights reserved.
7#
8# This code is derived from software contributed to The NetBSD Foundation
9# by Luke Mewburn.
10#
11# Redistribution and use in source and binary forms, with or without
12# modification, are permitted provided that the following conditions
13# are met:
14# 1. Redistributions of source code must retain the above copyright
15#    notice, this list of conditions and the following disclaimer.
16# 2. Redistributions in binary form must reproduce the above copyright
17#    notice, this list of conditions and the following disclaimer in the
18#    documentation and/or other materials provided with the distribution.
19#
20# THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
21# ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
22# TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
23# PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
24# BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
30# POSSIBILITY OF SUCH DAMAGE.
31#
32
33# We use the number specified in <sys/param.h>
34
35path="$0"
36[ "${path#/*}" = "$path" ] && path="./$path"
37exec < ${path%/*}/../sys/param.h
38
39# Search for line
40# #define __NetBSD_Version__ <ver_num> /* NetBSD <ver_text> */
41#
42# <ver_num> and <ver_text> should match!
43
44while
45	read define ver_tag rel_num comment_start NetBSD rel_text rest || exit 1
46do
47	[ "$define" = "#define" ] || continue;
48	[ "$ver_tag" = "__NetBSD_Version__" ] || continue
49	break
50done
51
52# default: return MM.mm.pp
53# -m: return MM, representing only the major number; however, for -current,
54#     return the next major number (e.g. for 5.99.nn, return 6)
55# -n: return MM.mm
56# -s: return MMmmpp (no dots)
57
58option="$1"
59
60# ${rel_num} is [M]Mmm00pp00
61rel_num=${rel_num%??}
62rel_MMmm=${rel_num%????}
63rel_MM=${rel_MMmm%??}
64rel_mm=${rel_MMmm#${rel_MM}}
65# rel_pp=${rel_num#${rel_MMmm}00}
66
67# Get patch from text version
68IFS=.
69set -- - $rel_text
70beta=${3#[0-9]}
71beta=${beta#[0-9]}
72shift 3
73IFS=' '
74set -- $rel_MM ${rel_mm#0}$beta $*
75
76case "$option" in
77-m)
78	echo "$(((${rel_MMmm}+1)/100))"
79	;;
80-n)
81	echo "${rel_MM}.${rel_mm#0}"
82	;;
83-s)
84	IFS=
85	echo "$*"
86	;;
87*)
88	IFS=.
89	echo "$*"
90	;;
91esac
92