FreeBSD/Linux Kernel Cross Reference
sys/conf/osrelease.sh

     #!/bin/sh
     #
     #       $NetBSD: osrelease.sh,v 1.122 2012/02/16 23:56:57 christos Exp $
     #
     # Copyright (c) 1997 The NetBSD Foundation, Inc.
     # All rights reserved.
     #
     # This code is derived from software contributed to The NetBSD Foundation
     # by Luke Mewburn.
    #
    # Redistribution and use in source and binary forms, with or without
    # modification, are permitted provided that the following conditions
    # are met:
    # 1. Redistributions of source code must retain the above copyright
    #    notice, this list of conditions and the following disclaimer.
    # 2. Redistributions in binary form must reproduce the above copyright
    #    notice, this list of conditions and the following disclaimer in the
    #    documentation and/or other materials provided with the distribution.
    #
    # THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
    # ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
    # TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
    # PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
    # BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
    # CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
    # SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
    # INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
    # CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
    # ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
    # POSSIBILITY OF SUCH DAMAGE.
    #
    
    # We use the number specified in <sys/param.h>
    
    path="$0"
    [ "${path#/*}" = "$path" ] && path="./$path"
    exec < ${path%/*}/../sys/param.h
    
    # Search for line
    # #define __NetBSD_Version__ <ver_num> /* NetBSD <ver_text> */
    #
    # <ver_num> and <ver_text> should match!
    
    while
            read define ver_tag rel_num comment_start NetBSD rel_text rest || exit 1
    do
            [ "$define" = "#define" ] || continue;
            [ "$ver_tag" = "__NetBSD_Version__" ] || continue
            break
    done
    
    # default: return MM.mm.pp
    # -m: return MM, representing only the major number; however, for -current,
    #     return the next major number (e.g. for 5.99.nn, return 6)
    # -n: return MM.mm
    # -s: return MMmmpp (no dots)
    # -k: return MM.mm on release branch, MM.mm.pp on current.
    
    option="$1"
    
    # ${rel_num} is [M]Mmm00pp00
    rel_num=${rel_num%??}
    rel_MMmm=${rel_num%????}
    rel_MM=${rel_MMmm%??}
    rel_mm=${rel_MMmm#${rel_MM}}
    # rel_pp=${rel_num#${rel_MMmm}00}
    
    # Get patch from text version
    IFS=.
    set -- - $rel_text
    beta=${3#[0-9]}
    beta=${beta#[0-9]}
    shift 3
    IFS=' '
    set -- $rel_MM ${rel_mm#0}$beta $*
    
    case "$option" in
    -k)
            if [ ${rel_mm#0} = 99 ]
            then
                    IFS=.
                    echo "$*"
            else
                    echo "${rel_MM}.${rel_mm#0}"
            fi
            ;;
                 
    -m)
            echo "$(((${rel_MMmm}+1)/100))"
            ;;
    -n)
            echo "${rel_MM}.${rel_mm#0}"
            ;;
    -s)
            IFS=
            echo "$*"
            ;;
    *)
            IFS=.
           echo "$*"
           ;;
   esac

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