/usr/bin/fai-class is in fai-client 3.4.8ubuntu2.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
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# $Id$
#*********************************************************************
#
# fai-class - determine all classes a host belongs to
#
# This script is part of FAI (Fully Automatic Installation)
# (c) 2002-2009 by Thomas Lange, lange@informatik.uni-koeln.de
# Universitaet zu Koeln
#
#*********************************************************************
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# General Public License for more details.
#
# A copy of the GNU General Public License is available as
# `/usr/share/common-licences/GPL' in the Debian GNU/Linux distribution
# or on the World Wide Web at http://www.gnu.org/copyleft/gpl.html. You
# can also obtain it by writing to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
#*********************************************************************
# import variables: $LOGDIR $verbose $debug
# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
verbosemsg() {
# a very nice subroutine
# write message if the verbose flag is set
[ "$verbose" ] && echo "$@"
}
# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
debugmsg() {
# a very nice subroutine
# write message if the debug flag is set
[ "$debug" ] && echo "$0: $@"
}
# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
addclass() {
# append classes to a file
while read line ; do
case $line in
\#*) ;; # strip comments
*) debugmsg "Adding class $line"
for class in $line ; do
echo $class >> $filename
done
esac
done
}
# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
fc_check_status() {
cmd=$1
st=$2
if [ $st -eq 0 ]; then
res="OK."
else
res="FAILED with exit code $st."
fi
# put result in the log file and write to stdout
printf "%-20s $res\n" $cmd | tee -a $LOGDIR/status.log
}
# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
usage() {
ex=$1
cat <<-EOF
fai-class Copyright (C) 2002-2009 Thomas Lange
Usage: fai-class [OPTION] DIRECTORY CLASSFILE
Define classes using files and scripts in DIRECTORY
Executes scripts in DIRECTORY starting with two digits.
The standard output of these scripts are names of classes which
are written to CLASSFILE.
EOF
exit $ex
}
# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
testclass() {
# test if some classes are define multiple times
duplicate=$(sort $filename | uniq -dc)
if [ -n "$duplicate" ]; then
echo "$0: WARNING. Following classes are defined multiple times: $duplicate"
exit 2
fi
}
# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
setup() {
# parse options, test and set some basic variables
while getopts "dhvt:T" opt ; do
case "$opt" in
d) debug=1 ;;
v) verbose=1 ;;
h) usage 0 ;;
T) ctest=1 ;;
t) LOGDIR=$OPTARG; export LOGDIR ;;
*) usage 1 ;;
esac
done
shift $(($OPTIND - 1))
[ -z "$2" ] || [ -n "$3" ] && usage 1
classdir=$1
filename=$2
cd $classdir || {
echo "$0: Can't change dir to $classdir."
exit 99
}
if [ -s $filename ]; then
verbosemsg "$filename exists. Renaming to $filename.bak"
mv $filename $filename.bak
fi
if [ -z "$LOGDIR" ]; then
verbosemsg "Setting LOGDIR to default value /tmp/fai"
LOGDIR=/tmp/fai; export LOGDIR
fi
}
# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
# main program
PATH=.:$PATH # so scripts in /fai/class are found
export PATH
setup "$@"
verbosemsg "fai-class: Defining classes."
echo DEFAULT | addclass
# define classes by executing scripts
# alphabetical sort is important
if [ "$debug" ]; then
scripts=$(echo [0-9][0-9]*)
else
scripts=$(echo [0-9][0-9]* 2>/dev/null)
fi
debugmsg "Scripts found: $scripts"
for f in $scripts ; do
[ -f $f ] || continue # skip sockets, pipes, symlinks
debugmsg "File $f found."
if [ ! -x $f ]; then
echo "Warning: File $f is not executable, so it's not used for defining classes."
continue
fi
classes=$(cat $filename)
export classes
case $f in
*~|*.bak) debugmsg "Skipping backup file $f" ;;
*.source)
verbosemsg "Executing $classdir/$f."
# this script can define $newclasses
newclasses=
. $f
fc_check_status $f $?
echo $newclasses | addclass ;;
*)
verbosemsg "Executing $classdir/$f."
classes=$($f </dev/null)
fc_check_status $f $?
echo $classes | addclass
;;
esac
done
# $LOGDIR should not be writable by everybody
# scripts can also write additional classes to a file, if they
# can't print them to stdout. Define these classes.
if [ -f $LOGDIR/additional-classes ]; then
cat $LOGDIR/additional-classes | addclass
if [ "$debug" ]; then
mv $LOGDIR/additional-classes $LOGDIR/additional-classes.used
else
# remove the file after it was used. Do not use the same file more than once.
rm -f $LOGDIR/additional-classes
fi
fi
# add all classes which are listed in a file with the hostname
if [ -f "$HOSTNAME" ]; then
verbosemsg "Using classes from file $classdir/$HOSTNAME"
grep -v "^#" $HOSTNAME | addclass
fi
echo ${ADDCLASSES//,/ } | addclass
# now add the hostname (the only class in lowercase) and LAST to
# the list of classes
echo $HOSTNAME LAST | addclass
# show all classes if verbose
debugmsg List of all classes: $(cat $filename)
[ "$ctest" ] && testclass
exit 0
|