debian/python-ifupdown2.postinst

   1 #!/bin/sh
   2 # postinst script for ifupdown2
   3 #
   4 # see: dh_installdeb(1)
   5
   6 set -e
   7
   8 # summary of how this script can be called:
   9 #        * <postinst> `configure' <most-recently-configured-version>
  10 #        * <old-postinst> `abort-upgrade' <new version>
  11 #        * <conflictor's-postinst> `abort-remove' `in-favour' <package>
  12 #          <new-version>
  13 #        * <postinst> `abort-remove'
  14 #        * <deconfigured's-postinst> `abort-deconfigure' `in-favour'
  15 #          <failed-install-package> <version> `removing'
  16 #          <conflicting-package> <version>
  17 # for details, see http://www.debian.org/doc/debian-policy/ or
  18 # the debian-policy package
  19
  20 process_udev()
  21 {
  22     # override default udev bridge and hotplug rules because they interfere with
  23     # networking init script
  24     udev_user_rulesdir=/etc/udev/rules.d/
  25     udev_sys_rulesdir=/lib/udev/rules.d/
  26     if [ -e $udev_user_rulesdir ]; then
  27         udev_ifupdown2_overrides="80-networking.rules
  28         60-bridge-network-interface.rules"
  29         for u in ${udev_ifupdown2_overrides}
  30         do
  31             if [ -e ${udev_sys_rulesdir}/$u -a ! -e ${udev_user_rulesdir}/$u ]; then
  32                 (cd ${udev_user_rulesdir} && ln -sf /dev/null $u)
  33             fi
  34         done
  35     fi
  36 }
  37
  38 MYNAME="${0##*/}"
  39
  40 report() { echo "${MYNAME}: $*" ; }
  41 report_warn() { report "Warning: $*" >&2 ; }
  42 report_err() { report "Error: $*" >&2 ; }
  43
  44 case "$1" in
  45     configure)
  46         # Create /etc/network/run
  47         [ -d /run/network ] || mkdir -p /run/network
  48
  49         # for backward compatibility
  50         if [ ! -f /etc/network/run ]; then
  51             ln -sf /run/network /etc/network/run
  52         fi
  53
  54         ln -sf /usr/share/python-ifupdown2/generate_interfaces.py \
  55             /usr/share/doc/python-ifupdown2/examples/generate_interfaces.py
  56
  57         [ -d /etc/network/if-pre-up.d ] || mkdir -p /etc/network/if-pre-up.d
  58         [ -d /etc/network/if-up.d ] || mkdir -p /etc/network/if-up.d
  59         [ -d /etc/network/if-post-up.d ] || mkdir -p /etc/network/if-post-up.d
  60
  61         [ -d /etc/network/if-pre-down.d ] || mkdir -p /etc/network/if-pre-down.d
  62         [ -d /etc/network/if-down.d ] || mkdir -p /etc/network/if-down.d
  63         [ -d /etc/network/if-post-down.d ] || mkdir -p /etc/network/if-post-down.d
  64
  65
  66         # Generic stuff done on all configurations
  67         if [ -f /etc/network/interfaces ] ; then
  68             # TODO: This should be handled with debconf and the script
  69             # could introduce the line there directly
  70             if ! grep -q "^[[:space:]]*iface[[:space:]]\+lo0\?[[:space:]]\+inet[[:space:]]\+loopback\>" /etc/network/interfaces ; then
  71                 report_warn "No 'iface lo' definition found in /etc/network/interfaces"
  72             fi
  73
  74             if ! grep -q "^[[:space:]]*\(allow-\|\)auto[[:space:]]\+\(.*[[:space:]]\+\|\)lo0\?\([[:space:]]\+\|$\)" /etc/network/interfaces ; then
  75                 report_warn "No 'auto lo' statement found in /etc/network/interfaces"
  76             fi
  77         else  # ! -f /etc/network/interfaces
  78             if [ -z "$2" ]; then
  79                 echo "Creating /etc/network/interfaces."
  80                 echo "# interfaces(5) file used by ifup(8) and ifdown(8)" > /etc/network/interfaces
  81                 echo "auto lo" >> /etc/network/interfaces
  82                     echo "iface lo inet loopback" >> /etc/network/interfaces
  83             else
  84                     report_warn "/etc/network/interfaces does not exist"
  85             fi
  86         fi
  87
  88         [ -e /sbin/ifup ] || ln -sf /sbin/ifupdown /sbin/ifup
  89         [ -e /sbin/ifdown ] || ln -sf /sbin/ifupdown /sbin/ifdown
  90         [ -e /sbin/ifquery ] || ln -sf /sbin/ifupdown /sbin/ifquery
  91         [ -e /sbin/ifreload ] || ln -sf /sbin/ifupdown /sbin/ifreload
  92
  93         (cd /usr/share/man/man8/ && ln -sf /usr/share/man/man8/ifup.8.gz ifdown.8.gz)
  94
  95         mkdir -p /etc/network/interfaces.d/
  96         process_udev
  97         update-rc.d networking start 40 S . start 35 0 6 . >/dev/null
  98         ;;
  99
 100     abort-upgrade|abort-remove|abort-deconfigure)
 101         ;;
 102
 103     *)
 104         echo "postinst called with unknown argument \`$1'" >&2
 105         exit 1
 106         ;;
 107 esac
 108
 109 # dh_installdeb will replace this with shell code automatically
 110 # generated by other debhelper scripts.
 111
 112 #DEBHELPER#
 113
 114 exit 0