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#! /bin/sh
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# $Id$
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#*********************************************************************
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#
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# subroutines -- useful subroutines for FAI
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#
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# This script is part of FAI (Fully Automatic Installation)
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# (c) 2000-2003 by Thomas Lange, lange@informatik.uni-koeln.de
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# Universitaet zu Koeln
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#
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#*********************************************************************
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful, but
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# WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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# General Public License for more details.
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#
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# A copy of the GNU General Public License is available as
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# `/usr/share/common-licences/GPL' in the Debian GNU/Linux distribution
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# or on the World Wide Web at http://www.gnu.org/copyleft/gpl.html. You
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# can also obtain it by writing to the Free Software Foundation, Inc.,
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# 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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#*********************************************************************
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# source this file, then you have these function available in the shell
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# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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die() {
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# echo comment and exit installation
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echo "$@"
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exec bash
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}
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# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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defnop() {
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# define given list of subroutine names as dummy function;
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# this will fake unknown commands
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local name
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for name in "$@";do
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eval "$name () { :;}"
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done
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}
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# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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islinux() {
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# test is we are running on Linux
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# [ X$OS_TYPE = X ] && OS_TYPE=`uname -s | tr '[A-Z]' '[a-z]'
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if [ X$OS_TYPE = Xlinux ]; then
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return 0
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else
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return 1
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fi
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}
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# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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ifclass() {
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[ "$debug" ] && set +vx
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# test if a class is defined
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local cl
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local ret=1
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for cl in $classes; do
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[ x$cl = x$1 ] && ret=0 && break
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done
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[ "$debug" ] && set -vx
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return $ret
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}
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# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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rwmount() {
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# remount partition read/write
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mount -o rw,remount $1
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}
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# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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save_dmesg() {
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dmesg > $LOGDIR/dmesg.log
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}
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# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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wait_for_jobs() {
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# can be an extern script
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# wait for running (background) jobs to finish (e.g. update-auctex-elisp)
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local i=0
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while (jobsrunning); do
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[ $(($i % 3)) -eq 0 ] && echo "Waiting for background jobs to finish."
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i=$(($i+1))
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sleep 10
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done
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}
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# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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task() {
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# hooks are called before a task is called
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# if a task is skipped, also its hooks are skipped
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# a hook can set the flag, so the accociated task is skipped
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local taskname=$1
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[ -f $LOGDIR/skip.$taskname ] || call_hook $taskname
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if [ -f $LOGDIR/skip.$taskname ]; then
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# skip task
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rm $LOGDIR/skip.$taskname
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[ "$verbose" ] && echo "Skiping task_$taskname"
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else
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echo "Calling task_$taskname"
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task_$taskname
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fi
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# since the subroutine is not needed any more, we can undefine it
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unset task_$taskname
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}
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# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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call_hook() {
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local hook=$1
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local cl dflag hfile
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[ "$debug" ] && dflag="-d"
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for cl in $classes; do
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hfile=$FAI/hooks/$hook.$cl
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if [ -x $hfile ]; then
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echo "Calling hook: $hook.$cl"
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# execute the hook
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$hfile $dflag
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check_status $hook.$cl $?
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fi
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if [ -x $hfile.source ]; then
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echo "Source hook: $hook.$cl.source"
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# source this hook
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. $hfile.source $dflag
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check_status $hook.$cl.source $?
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fi
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done
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}
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# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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skiptask() {
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# mark all given tasks, so they will be skipped
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local tasklist="$@"
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local task
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for task in $tasklist; do
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> $LOGDIR/skip.$task
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done
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}
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# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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get_fai_dir() {
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# get /fai directory; mount it or get it from a cvs repository
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if [ -z "$FAI_LOCATION" ]; then
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[ "$debug" ] && echo "Warning $0: \$FAI_LOCATION not defined."
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get_fai_cvs
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else
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mount $romountopt $FAI_LOCATION $FAI &&
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echo "Configuration space $FAI mounted from $FAI_LOCATION"
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fi
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if [ ! -d $FAI/class ]; then
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die "$FAI/class not found. Aborting."
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fi
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}
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# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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get_fai_cvs() {
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# subroutine which gets $FAI (/fai) configuration directory from
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# a cvs repository. You can redefine this subroutine if you need
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# access via ftp, http, or from a database
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if [ "$FAI_CVSROOT" ] ; then
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local TAG=""
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echo "Checking out CVS"
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[ -n "$FAI_CVSTAG" ] && TAG="-r $FAI_CVSTAG"
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export FAI_CONFIG_AREA=$FAI
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export FAI=/tmp/$(basename $FAI_CONFIG_AREA)
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[ "$debug" ] && echo "\$FAI now points to $FAI"
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if [ -d "$FAI_CONFIG_AREA" -a -z "$DONTCOPYCVS" ] ; then
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echo "Config found at $FAI_CONFIG_AREA: Copying"
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cp -a $FAI_CONFIG_AREA $FAI
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echo "Updating CVS"
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fi
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cd /tmp
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cvs -q -d"$FAI_CVSROOT" co -P -d $(basename "$FAI") \
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$TAG $FAI_CVSMODULE > $LOGDIR/cvs.log
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else
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echo "Warning $0: Neither \$FAI_LOCATION nor \$FAI_CVSROOT are defined."
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fi
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}
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# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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define_fai_flags() {
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local flag
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# FAI_FLAGS are comma separated, define all flags
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FAI_FLAGS=${FAI_FLAGS//,/ }
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for flag in $FAI_FLAGS; do
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# define this flag as 1
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eval "$flag=1"
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[ "$verbose" ] && echo "FAI_FLAGS: $flag=1"
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done
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}
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# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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task_setup() {
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# source user specific subroutines
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[ -f $FAI/hooks/subroutines ] && . $FAI/hooks/subroutines
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# set the system time and date using rdate or/and ntpdate
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[ "$TIMESRVS_1" ] && rdate $TIMESRVS_1
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[ "$NTPSRVS_1" ] && ntpdate -b -v $NTPSRVS
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define_fai_flags
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DNSDOMAIN=$DOMAIN # cfengine 1.5.3 can't use $DOMAIN
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[ "$createvt" ] && {
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# create two virtual terminals; acces via alt-F2 and alt-F3
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echo "Press ctrl-c to interrupt FAI and to get a shell"
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openvt -c2 /bin/bash ; openvt -c3 /bin/bash
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trap 'echo "You can reboot with faireboot";bash' INT QUIT
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}
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# start secure shell daemon for remote access
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[ "$sshd" -a -x /usr/sbin/sshd ] && /usr/sbin/sshd
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# when did FAI start, using localtime
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FAI_RUNDATE=$(date +'%Y%m%d_%H%M%S')
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cat >> $rcsfaivar <<-EOM
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FAI_RUNDATE=$FAI_RUNDATE
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LOGDIR=$LOGDIR
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EOM
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}
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# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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task_action() {
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if [ -z "$FAI_ACTION" ]; then
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echo "No action in \$FAI_ACTION defined."
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task_faiend # task faiend should never return
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exit
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fi
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echo "FAI_ACTION: $FAI_ACTION"
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echo "FAI_ACTION=$FAI_ACTION" >> $rcsfaivar
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case $FAI_ACTION in
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install)
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echo Performing FAI installation. All data may be overwritten!
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echo -ne "\a"; sleep 1
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echo -ne "\a"; sleep 1
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echo -e "\a"; sleep 5
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task install
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;;
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sysinfo)
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echo Showing system information.
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task sysinfo
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die Now you have a shell.
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;;
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*)
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if [ -f $FAI/hooks/$FAI_ACTION ]; then
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echo "Calling user defined action: $FAI_ACTION"
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$FAI/hooks/$FAI_ACTION
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else
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echo "ERROR: User defined action $FAI/hooks/$FAI_ACTION not found."
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task_faiend
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fi
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;;
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esac
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}
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# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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task_defclass() {
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local class
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# new script for defining classes; variables imported: $LOGDIR, $verbose, $debug
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fai-class $FAI/class $LOGDIR/FAI_CLASSES
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classes=$(< $LOGDIR/FAI_CLASSES)
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# also define all classes in reverse order ($revclasses)
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# for class in $classes ; do
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# revclasses="$class $revclasses"
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# done
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# define classes as: a.b.c.d for cfengine -D
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# this doesn't work without echo
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cfclasses=`echo $classes`
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cfclasses=${cfclasses// /.}
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[ "$debug" ] && echo "cfclasses: $cfclasses"
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}
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# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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task_defvar() {
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cd $FAI/class
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for class in $classes ; do
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if [ -f $class.var ]; then
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[ "$verbose" ] && echo "Executing $class.var"
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[ "$debug" ] && set -vx
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. $class.var </dev/null
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[ "$debug" ] && set +vx
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fi
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done
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# /fai/class/S* scripts or hooks can write variable definitions
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# to additonal.var. now source these definitions
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[ "$debug" ] && set -vx
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[ -f $LOGDIR/additional.var ] && . $LOGDIR/additional.var
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[ "$debug" ] && set +vx
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unset class
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# now all variables are defined. Dump them to variables.sh
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set | perl -ne 'print if /^\w\w+=/' > $LOGDIR/variables.sh
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}
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# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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task_mountdisks() {
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[ ! -f $LOGDIR/$fstab ] && die "No $LOGDIR/$fstab created."
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if islinux; then
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# mount swap space
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local sd
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for sd in $SWAPLIST; do
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swapon $sd && [ "$verbose" ] && echo "Enable swap device $sd"
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done
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fi
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mount2dir $FAI_ROOT $LOGDIR/$fstab
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}
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# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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task_configure() {
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fai-do-scripts $FAI/scripts
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}
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# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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task_savelog() {
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fai-savelog -l
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fai-savelog -r
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[ -d $target/etc/fai ] || mkdir -p $target/etc/fai
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cd $LOGDIR && cp -p FAI_CLASSES variables.sh $diskvar $target/etc/fai
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}
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# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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task_faiend() {
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wait_for_jobs
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echo "Press <RETURN> to reboot or ctrl-c to execute a shell"
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# reboot without prompting if FAI_FLAG reboot is set
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[ -z $reboot ] && read
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echo "Rebooting $HOSTNAME now"
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cd /
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sync
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umount -ar
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exec reboot -dfi
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}
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# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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task_backup() {
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die "Task backup not yet used. But you can use the hook backup."
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}
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# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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task_install() {
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> $stamp
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save_dmesg
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task partition
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task mountdisks
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task extrbase
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task mirror
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task updatebase
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task instsoft
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task configure
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task finish
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date
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echo -e "FAI finished.\a"
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task chboot
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rm -f $stamp
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# save again, because new messages could be created
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save_dmesg
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task savelog
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| 384 |
if [ -f $stamp ]; then
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echo "Error while executing commands in subshell."
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echo "$stamp was not removed."
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die "Please look at the log files in $LOGDIR for errors."
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fi
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task faiend
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}
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# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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