sysupdate - an addition for etcupdate(8)

[Hubert Feyrer <hubert%feyrer.de@localhost>]

I wanted to update a few machines with latest netbsd-5 and -current today, 
and found that there's a certain lack of tools to aid in the process:
we have etcupdate(8) and postinstall(8), but nothing to help extract the 
userland sets (let alone do the same thing for the kernel, esp. now that 
modules must be put into place, too).

To save me from re-typing the same commands, I've hacked a script 
"sysupdate" that's intended to run with a new kernel booted, and which 
will then 1) extract all the sets where mtree files are in /etc/mtree, and 
2) run etcupdate for etc (and xetc, if in /etc/mtree).

Here's an example run:

    % sh ~/tmp/sysupdate -s 
/usr/cvs/src-current/obj.i386/releasedir/i386/binary/sets -n
    ---------------------------------------------------------------------------
    Updating your userland now!
    ---------------------------------------------------------------------------

    New userland: NetBSD 5.99.23 (GENERIC) #0: Sun Jan 3 02:13:00 CET 2010
    Current kernel: NetBSD vmnetbsd6 5.99.23 NetBSD 5.99.23 (GENERIC) #0: Sun 
Jan 3 02:13:00 CET 2010 
feyrer%mini.local@localhost:/usr/cvs/src-current/obj.i386/sys/arch/i386/compile/GENERIC
 i386

    Really update? (y/N) y
    Updating sets...
    Extracting base.tgz
    tar -plzx -C / -f base.tgz
    Extracting comp.tgz
    tar -plzx -C / -f comp.tgz
    Extracting games.tgz
    tar -plzx -C / -f games.tgz
    Extracting man.tgz
    tar -plzx -C / -f man.tgz
    Extracting misc.tgz
    tar -plzx -C / -f misc.tgz
    Extracting modules.tgz
    tar -plzx -C / -f modules.tgz
    Extracting tests.tgz
    tar -plzx -C / -f tests.tgz
    Extracting text.tgz
    tar -plzx -C / -f text.tgz
    Extracting xbase.tgz
    tar -plzx -C / -f xbase.tgz
    Extracting xcomp.tgz
    tar -plzx -C / -f xcomp.tgz
    Extracting xfont.tgz
    tar -plzx -C / -f xfont.tgz
    Extracting xserver.tgz
    tar -plzx -C / -f xserver.tgz
    Updating etc files...
    etcupdate -s 
/usr/cvs/src-current/obj.i386/releasedir/i386/binary/sets/etc.tgz -s 
/usr/cvs/src-current/obj.i386/releasedir/i386/binary/sets/xetc.tgz
    Done.
    %

The script is appended below. Enjoy!


 - Hubert


#!/bin/sh
#
# Script to update userland sets (base, ... - whatever is i /usr/mtree)
# Also see if etc and xetc need an update. If so, run etcupdate.
#
# - Hubert Feyrer <hubert%feyrer.de@localhost>
#

etc_update=false
xetc_update=false

# Flag variables
setdir=`pwd`
do_NOT=
force=false

# Parse options
while getopts s:nf f
do
        case $f in
                s)      setdir=${OPTARG};;
                n)      do_NOT=echo;;
                f)      force=true;;
                *)      echo "Usage: $0 [-nf] [-s tgzdir]"
                        echo "-n        Do nothing"
                        echo "-f        Force kernel version as ok"
                        echo "-s        Directory with .tgz set files"
                        exit 1
                        ;;
        esac
done
shift `expr $OPTIND - 1`

if [ "$setdir" = "." ]; then
        setdir=`pwd`
fi


echo 
"---------------------------------------------------------------------------"
echo "Updating your userland now!"
echo 
"---------------------------------------------------------------------------"
echo ""

echo New userland: `zcat ${setdir}/kern-GENERIC.tgz | strings | grep -a 
'^NetBSD.*GENERIC'`
echo Current kernel: `uname -a`
echo ""
if ! $force
then
        echo -n "Really update? (y/N) "
        read yn
        case $yn in
                [yY]*)  ;;
                *)      echo Aborting.
                        exit 1
                        ;;
        esac
fi

echo Updating sets...
cd /etc/mtree
for f in set.*
do
        cd $setdir

        set=${f##set.}
        case ${set} in
        etc)
                etc_update=true
                ;;
        xetc)
                xetc_update=true
                ;;
        *)
                setfile=${set}.tgz
                if [ -f ${setfile} ]; then
                        echo Extracting ${setfile}
                        $do_NOT tar -plzx -C / -f ${setfile}
                else
                        echo WARNING: Set file ${setfile} not found, skipping.
                fi
                ;;
        esac
done

echo Updating etc files...
etcupdate_sets=""
if $etc_update; then
        etcupdate_sets="-s ${setdir}/etc.tgz"

        if $xetc_update; then
                etcupdate_sets="${etcupdate_sets} -s ${setdir}/xetc.tgz"
        fi

        $do_NOT etcupdate ${etcupdate_sets}
fi

echo Done.