Implement dpkg-divert handling to address failing update-grub in openvz environments.

[grml-live.git] / etc / grml / fai / config / hooks / instsoft.GRMLBASE

diff --git a/etc/grml/fai/config/hooks/instsoft.GRMLBASE b/etc/grml/fai/config/hooks/instsoft.GRMLBASE
index cf8c3be..8600154 100755 (executable)
--- a/etc/grml/fai/config/hooks/instsoft.GRMLBASE
+++ b/etc/grml/fai/config/hooks/instsoft.GRMLBASE
@@ -1,5 +1,5 @@
 #!/bin/bash
-# Filename:      /etc/grml/fai/config/hooks/instsoft.GRMLBASE
+# Filename:      ${GRML_FAI_CONFIG}/hooks/instsoft.GRMLBASE
 # Purpose:       Grml specific software installation in the chroot, executed after updatebase
 # Authors:       grml-team (grml.org), (c) Michael Prokop <mika@grml.org>
 # Bug-Reports:   see http://grml.org/bugs/
@@ -9,6 +9,9 @@
 set -u
 set -e
 
+GRML_SOURCES_LIST="$target/etc/apt/sources.list.d/grml.list"
+DEBIAN_SOURCES_LIST="$target/etc/apt/sources.list.d/debian.list"
+
 # if hooks/updatebase.GRMLBASE fails for whatever reason
 # and can't skip instsoft.GRMLBASE we have to make sure
 # we exit here as well
@@ -21,7 +24,7 @@ if [ "$FAI_ACTION" = "softupdate" ] ; then
    echo "Action $FAI_ACTION of FAI (hooks/instsoft.GRMLBASE) via grml-live running"
 
    if [ -r /etc/resolv.conf ] ; then
-     if [ -d $target/etc/resolvconf/run ] ; then # resolvconf
+     if [ -d $target/etc/resolvconf/run ] ; then # resolvconf without /run
        # sanity check to avoid "input file is output file",
        # see http://bts.grml.org/grml/issue984
        if ! [ -L $target/etc/resolvconf/run/resolv.conf ] ; then
@@ -31,6 +34,10 @@ if [ "$FAI_ACTION" = "softupdate" ] ; then
          echo "       Looks like something is wrong, please fix manually." >&2
          exit 1
        fi
+     elif [ -L $target/etc/resolvconf/run ] ; then # resolvconf with /run
+       # /etc/resolvconf/run symlinks to /run/resolvconf
+       mkdir -p $target/run/resolvconf
+       cat /etc/resolv.conf >> $target/run/resolvconf/resolv.conf
      else # no resolvconf installed in chroot
        if ! [ -L $target/etc/resolv.conf ] ; then
          cat /etc/resolv.conf >> $target/etc/resolv.conf
@@ -58,28 +65,22 @@ EOF
 
    # FAI softupdate executes upgrade only with the sources.list being
    # present in the chroot - so let's do it on our own:
-   if [ -r /etc/grml/fai/apt/sources.list ] ; then
-      if [ -L $target/etc/apt/sources.list ] ; then
-         rm $target/etc/apt/sources.list
-      fi
-
-      # install grml-live's (on the fly adjusted) sources.list config
-      cp /etc/grml/fai/apt/sources.list $target/etc/apt/sources.list.d/grml-live.list
+   fcopy /etc/apt/sources.list
+
+   # when re-running grml-live with the -u option we do not want to use the
+   # sources.list config of the live system but grml-live's config instead,
+   # therefore temporarly move known files and restore them again later on
+   # through /etc/grml/fai/config/scripts/GRMLBASE/33-aptsetup:
+   if [ -r "$GRML_SOURCES_LIST" ] ; then
+      mv "$GRML_SOURCES_LIST" "${GRML_SOURCES_LIST}.unused"
+   fi
 
-      # when re-running grml-live with the -u option we do not want to use the
-      # sources.list config of the live system but grml-live's config instead,
-      # therefore temporarly move known files and restore them again later on
-      # through /etc/grml/fai/config/scripts/GRMLBASE/33-aptsetup:
-      if [ -r  $target/etc/apt/sources.list.d/grml.list ] ; then
-         mv $target/etc/apt/sources.list.d/grml.list $target/etc/apt/sources.list.d/grml.unused
-      fi
-      if [ -r  $target/etc/apt/sources.list.d/debian.list ] ; then
-         mv $target/etc/apt/sources.list.d/debian.list $target/etc/apt/sources.list.d/debian.unused
-      fi
+   if [ -r "$DEBIAN_SOURCES_LIST" ] ; then
+      mv "$DEBIAN_SOURCES_LIST" "${DEBIAN_SOURCES_LIST}.unused"
    fi
 
    # run it on our own, as updatebase is used at the wrong stage for our needs,
-   # see /etc/grml/fai/config/hooks/updatebase.GRMLBASE
+   # see ${GRML_FAI_CONFIG}/hooks/updatebase.GRMLBASE
    # the apt-get update might return an error if there's for example
    # a hashsum mismatch on Debian mirror sources, we might want to continue
    # but should warn the user
@@ -87,6 +88,14 @@ EOF
       echo "Warning: there was an error executing apt-get update, continuing anyway."
    fi
 
+   # work around /etc/kernel/postinst.d/zz-update-grub failing
+   # inside openvz environment, see #597084
+   if ! $ROOTCMD dpkg-divert --list | grep -q '/usr/sbin/update-grub' ; then
+     echo "Diverting update-grub executable"
+     $ROOTCMD dpkg-divert --rename --add /usr/sbin/update-grub
+     $ROOTCMD ln -s /bin/true /usr/sbin/update-grub
+   fi
+
   # newer aptitude versions won't remove essential packages using
   # 'aptitude -f -y install file-rc' anymore, therefore force it:
   $ROOTCMD aptitude -o Aptitude::ProblemResolver::Keep-All-Tier=60000 -f -y install file-rc
@@ -153,4 +162,4 @@ if [ -L "$target"/usr/sbin/invoke-rc.d ] ; then
 fi
 
 ## END OF FILE #################################################################
-# vim:ft=sh expandtab ai tw=80 tabstop=4 shiftwidth=3
+# vim:ft=sh expandtab ai tw=80 tabstop=4 shiftwidth=2