debian/templates/image.postinst.in

   1 #!/bin/sh
   2 set -e
   3
   4 version=@abiname@@localversion@
   5 image_path=/boot/@image-stem@-$version
   6
   7 #
   8 # When we install linux-image we have to run kernel postinst.d support to
   9 # generate the initramfs, create links etc.  Should it have an associated
  10 # linux-image-extra package and we install that we also need to run kernel
  11 # postinst.d, to regenerate the initramfs.  If we are installing both at the
  12 # same time, we necessarily trigger kernel postinst.d twice. As this includes
  13 # rebuilding the initramfs and reconfiguring the boot loader this is very time
  14 # consuming.
  15 #
  16 # Similarly for removal when we remove the linux-image-extra package we need to
  17 # run kernel postinst.d handling in order to pare down the initramfs to
  18 # linux-image contents only.  When we remove the linux-image need to remove the
  19 # now redundant initramfs.  If we are removing both at the same time, then
  20 # we will rebuilt the initramfs and then immediatly remove it.
  21 #
  22 # Switches to using a trigger against the linux-image package for all
  23 # postinst.d and postrm.d handling.  On installation postinst.d gets triggered
  24 # twice once by linux-image and once by linux-image-extra.  As triggers are
  25 # non-cumulative we will only run this processing once.  When removing both
  26 # packages we will trigger postinst.d from linux-image-extra and then in
  27 # linux-image postrm.d we effectivly ignore the pending trigger and simply run
  28 # the postrm.d.  This prevents us from rebuilding the initramfs.
  29 #
  30 if [ "$1" = triggered ]; then
  31     trigger=/usr/lib/linux/triggers/$version
  32     if [ -f "$trigger" ]; then
  33         sh "$trigger"
  34         rm -f "$trigger"
  35     fi
  36     exit 0
  37 fi
  38
  39 if [ "$1" != configure ]; then
  40     exit 0
  41 fi
  42
  43 depmod $version
  44
  45 if [ -f /lib/modules/$version/.fresh-install ]; then
  46     change=install
  47 else
  48     change=upgrade
  49 fi
  50 linux-update-symlinks $change $version $image_path
  51 rm -f /lib/modules/$version/.fresh-install
  52
  53 if [ -d /etc/kernel/postinst.d ]; then
  54     mkdir -p /usr/lib/linux/triggers
  55     cat - >/usr/lib/linux/triggers/$version <<EOF
  56 DEB_MAINT_PARAMS="$*" run-parts --report --exit-on-error --arg=$version \
  57       --arg=$image_path /etc/kernel/postinst.d
  58 EOF
  59     dpkg-trigger --no-await linux-update-$version
  60 fi
  61
  62 exit 0