ifupdown2: fixup maintainer scripts

[mirror_ifupdown2.git] / ifupdown2 / debian / python-ifupdown2.postinst

#!/bin/sh
# postinst script for ifupdown2
#
# see: dh_installdeb(1)

set -e

# summary of how this script can be called:
#        * <postinst> `configure' <most-recently-configured-version>
#        * <old-postinst> `abort-upgrade' <new version>
#        * <conflictor's-postinst> `abort-remove' `in-favour' <package>
#          <new-version>
#        * <postinst> `abort-remove'
#        * <deconfigured's-postinst> `abort-deconfigure' `in-favour'
#          <failed-install-package> <version> `removing'
#          <conflicting-package> <version>
# for details, see http://www.debian.org/doc/debian-policy/ or
# the debian-policy package

MYNAME="${0##*/}"

report() { echo "${MYNAME}: $*" ; }
report_warn() { report "Warning: $*" >&2 ; }
report_err() { report "Error: $*" >&2 ; }

case "$1" in
    configure)
        # Create /etc/network/run
        [ -d /run/network ] || mkdir -p /run/network

        # for backward compatibility
        if [ ! -f /etc/network/run ]; then
            ln -sf /run/network /etc/network/run
        fi

        ln -sf /usr/share/python-ifupdown2/generate_interfaces.py \
            /usr/share/doc/python-ifupdown2/examples/generate_interfaces.py

        [ -d /etc/network/if-pre-up.d ] || mkdir -p /etc/network/if-pre-up.d
        [ -d /etc/network/if-up.d ] || mkdir -p /etc/network/if-up.d
        [ -d /etc/network/if-post-up.d ] || mkdir -p /etc/network/if-post-up.d

        [ -d /etc/network/if-pre-down.d ] || mkdir -p /etc/network/if-pre-down.d
        [ -d /etc/network/if-down.d ] || mkdir -p /etc/network/if-down.d
        [ -d /etc/network/if-post-down.d ] || mkdir -p /etc/network/if-post-down.d


        # Generic stuff done on all configurations
        if [ -f /etc/network/interfaces ] ; then
            # TODO: This should be handled with debconf and the script
            # could introduce the line there directly
            if ! grep -q "^[[:space:]]*iface[[:space:]]\+lo0\?[[:space:]]\+inet[[:space:]]\+loopback\>" /etc/network/interfaces ; then
                report_warn "No 'iface lo' definition found in /etc/network/interfaces"
            fi

            if ! grep -q "^[[:space:]]*\(allow-\|\)auto[[:space:]]\+\(.*[[:space:]]\+\|\)lo0\?\([[:space:]]\+\|$\)" /etc/network/interfaces ; then
                report_warn "No 'auto lo' statement found in /etc/network/interfaces"
            fi
        else  # ! -f /etc/network/interfaces
            if [ -z "$2" ]; then
                echo "Creating /etc/network/interfaces."
                echo "# interfaces(5) file used by ifup(8) and ifdown(8)" > /etc/network/interfaces
                echo "auto lo" >> /etc/network/interfaces
                    echo "iface lo inet loopback" >> /etc/network/interfaces
            else
                    report_warn "/etc/network/interfaces does not exist"
            fi
        fi

        [ -e /sbin/ifup ] || ln -sf /sbin/ifupdown /sbin/ifup
        [ -e /sbin/ifdown ] || ln -sf /sbin/ifupdown /sbin/ifdown
        [ -e /sbin/ifquery ] || ln -sf /sbin/ifupdown /sbin/ifquery
        [ -e /sbin/ifreload ] || ln -sf /sbin/ifupdown /sbin/ifreload

        (cd /usr/share/man/man8/ && ln -sf /usr/share/man/man8/ifup.8.gz ifdown.8.gz)

        mkdir -p /etc/network/interfaces.d/
        update-rc.d networking start 40 S . start 35 0 6 . >/dev/null
        ;;

    abort-upgrade|abort-remove|abort-deconfigure)
        ;;

    *)
        echo "postinst called with unknown argument \`$1'" >&2
        exit 1
        ;;
esac

# dh_installdeb will replace this with shell code automatically
# generated by other debhelper scripts.

# override default udev bridge and hotplug rules because they interfere with
# networking init script
udev_user_rulesdir=/etc/udev/rules.d/
udev_sys_rulesdir=/lib/udev/rules.d/
if [ -e $udev_user_rulesdir ]; then
    udev_ifupdown2_overrides="80-networking.rules
    60-bridge-network-interface.rules"
    for u in ${udev_ifupdown2_overrides}
    do
        if [ -e ${udev_sys_rulesdir}/$u -a ! -e ${udev_user_rulesdir}/$u ]; then
            (cd ${udev_user_rulesdir} && ln -sf /dev/null $u)
        fi
    done
fi

#DEBHELPER#

exit 0