mirror of
https://github.com/CumulusNetworks/ifupdown2.git
synced 2024-05-06 15:54:50 +00:00
110 lines
3.4 KiB
Bash
110 lines
3.4 KiB
Bash
#!/bin/sh
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set -e
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MYNAME="${0##*/}"
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report() { echo "${MYNAME}: $*" ; }
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report_warn() { report "Warning: $*" >&2 ; }
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report_err() { report "Error: $*" >&2 ; }
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fix_dhclient_file_with_space()
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{
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# because of a typo an older ifupdown2 version was creating lease file
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# with trailing space. In case we still have users with such files we
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# need to strip that trailing whitespace.
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for filename in `find /var/lib/dhcp/ -name "dhclient.*.leases "`
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do
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if [ -f "$filename " ];
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then
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interface_name=`echo $filename | cut -d'.' -f2,3,4,5`
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mv "$filename " /var/lib/dhcp/dhclient6.$interface_name
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fi
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done
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}
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process_etc_network_interfaces()
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{
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# Generic stuff done on all configurations
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if [ -f /etc/network/interfaces ] ; then
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if ! grep -q -E "^[[:space:]]*iface[[:space:]]+l[o0]([[:space:]]+inet([[:space:]]+loopback)?)?[[:space:]]*$" /etc/network/interfaces ; then
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report_warn "No 'iface lo' definition found in /etc/network/interfaces"
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fi
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if ! grep -q "^[[:space:]]*\(allow-\|\)auto[[:space:]]\+\(.*[[:space:]]\+\|\)lo0\?\([[:space:]]\+\|$\)" /etc/network/interfaces ; then
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report_warn "No 'auto lo' statement found in /etc/network/interfaces"
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fi
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else # ! -f /etc/network/interfaces
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if [ -z "$2" ]; then
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echo "Creating /etc/network/interfaces."
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echo "# interfaces(5) file used by ifup(8) and ifdown(8)" > /etc/network/interfaces
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echo "auto lo" >> /etc/network/interfaces
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echo "iface lo inet loopback" >> /etc/network/interfaces
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else
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report_warn "/etc/network/interfaces does not exist"
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fi
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fi
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}
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process_udev()
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{
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# override default udev bridge and hotplug rules because they interfere with
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# networking init script
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udev_user_rulesdir=/etc/udev/rules.d/
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udev_sys_rulesdir=/lib/udev/rules.d/
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if [ -e $udev_user_rulesdir ]; then
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udev_ifupdown2_overrides="80-networking.rules
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60-bridge-network-interface.rules"
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for u in ${udev_ifupdown2_overrides}
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do
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if [ -e ${udev_sys_rulesdir}/$u -a ! -e ${udev_user_rulesdir}/$u ]; then
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(cd ${udev_user_rulesdir} && ln -sf /dev/null $u)
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fi
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done
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fi
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}
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# restore file if we diverted it on install/upgrade
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_postinst_remove_diverts()
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{
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diversions=$(LC_ALL=C.UTF-8 dpkg-divert --list | grep "^diversion of $1 .* by ifupdown2$" | wc -l 2> /dev/null)
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if [ $diversions -gt 0 ];
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then
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dpkg-divert --remove --package ifupdown2 --rename $1
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fi
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}
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postinst_remove_diverts()
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{
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for filename in ifup ifdown ifquery ifreload
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do
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_postinst_remove_diverts "/sbin/$filename"
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_postinst_remove_diverts "/usr/share/bash-completion/completions/$filename"
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_postinst_remove_diverts "/etc/bash_completion.d/$filename"
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_postinst_remove_diverts "/usr/share/man/man8/$filename.8.gz"
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done
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_postinst_remove_diverts "/usr/share/man/man5/interfaces.5.gz"
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}
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case "$1" in
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configure)
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fix_dhclient_file_with_space
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process_etc_network_interfaces
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process_udev
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chmod +x /usr/share/ifupdown2/__main__.py
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postinst_remove_diverts
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;;
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abort-upgrade|abort-remove|abort-deconfigure)
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;;
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*)
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echo "postinst called with unknown argument \`$1'" >&2
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exit 1
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;;
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esac
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#DEBHELPER#
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exit 0
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