postinst is in initramfs-tools-tcos 0.89.86.
This file is a maintainer script. It is executed when installing (*inst) or removing (*rm) the package.
The actual contents of the file can be viewed below.
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set -e
# create tcos group if not exists
if ! getent group tcos >/dev/null; then
addgroup --quiet --system tcos || true
fi
# make sure that tcos.conf is not all readable
chmod -f 644 /etc/tcos/tcos.conf
chown -f root:tcos /etc/tcos/tcos.conf
chmod -f 775 /var/lib/tcos/tftp/pxelinux.cfg
chown -f -R root:tcos /var/lib/tcos/tftp/pxelinux.cfg
chmod -f -R 664 /var/lib/tcos/tftp/pxelinux.cfg/* 2>/dev/null || true
chown -f -R root:tcos /etc/tcos/secrets
chmod -f 755 /etc/tcos/secrets
chmod -f -R 640 /etc/tcos/secrets/* 2>/dev/null || true
if [ -d /etc/tcos/templates ];then
chown -f -R root:tcos /etc/tcos/templates
chmod -f 775 /etc/tcos/templates
chmod -f -R 640 /etc/tcos/templates/tcos* 2>/dev/null || true
fi
# create file
[ ! -e /etc/tcos/modules ] && touch /etc/tcos/modules
# FIXME, now tftp is /srv/tftp
TFTPBOOT_DEFAULT=/var/lib/tftpboot
TFTPBOOT=
read_inetd() {
# read tftpboot dir from inetd.conf
if [ -f /etc/inetd.conf ]; then
# get last word of tftp file
tmp=$(awk '/^tftp/ {print $NF}' /etc/inetd.conf 2>/dev/null)
if [ -d "${tmp}" ]; then
TFTPBOOT=${tmp}
fi
fi
}
read_dnsmasq() {
# read tftp-root var from /etc/dnsmasq.conf
if [ -f /etc/dnsmasq.conf ]; then
tmp=$(awk -F'=' '/^tftp-root/ {print $2}' /etc/dnsmasq.conf 2>/dev/null)
if [ -d "${tmp}" ]; then
TFTPBOOT=${tmp}
fi
fi
}
read_from_conf() {
#$1 is conf file
if [ -f "$1" ]; then
for txt in $(grep OPTIONS "$1" ); do
if [ $(echo $txt |grep -c "/" ) = 1 ]; then
TFTPBOOT=$(echo $txt| sed s/"\""/""/g)
fi
done
fi
}
#
# First we try to read from dnsmasq, second inetd and third conf file
#
read_dnsmasq
if [ -z "$TFTPBOOT" ]; then
# read from inetd
read_inetd
fi
if [ -z "$TFTPBOOT" ]; then
# try with conf files
read_from_conf "/etc/default/atftpd"
fi
if [ -z "${TFTPBOOT}" ]; then
TFTPBOOT=$TFTPBOOT_DEFAULT
echo " * Using $TFTPBOOT_DEFAULT dir as TFTP root dir"
fi
if [ ! -d ${TFTPBOOT} ]; then
# create dir
mkdir -p "${TFTPBOOT}"
echo " * Created $TFTPBOOT dir as TFTP root dir"
fi
if [ ! -L ${TFTPBOOT}/tcos ]; then
rm -rf ${TFTPBOOT}/tcos
fi
# make symlink
if [ ! -e ${TFTPBOOT}/tcos ]; then
ln -s /var/lib/tcos/tftp ${TFTPBOOT}/tcos
fi
[ ! -e /var/lib/tcos/tftp/conf ] && mkdir -p /var/lib/tcos/tftp/conf
chown -f -R root:tcos /var/lib/tcos/tftp/conf
chmod -f 775 /var/lib/tcos/tftp/conf
chmod -f -R 664 /var/lib/tcos/tftp/conf/* 2>/dev/null || true
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