X-Git-Url: http://git.grml.org/?p=grml-live.git;a=blobdiff_plain;f=etc%2Fgrml%2Ffai%2Fconfig%2Fscripts%2FGRMLBASE%2F96-apt-listbugs;h=bbe6117309e4e15b547cb61c1a7b221fec8c3a8a;hp=f1083d3e3010ebbeb84579ad4ae7c42009503810;hb=16a29e1;hpb=2017df2408d7a815e4594d93501e3253b8d799ca

diff --git a/etc/grml/fai/config/scripts/GRMLBASE/96-apt-listbugs b/etc/grml/fai/config/scripts/GRMLBASE/96-apt-listbugs
index f1083d3..bbe6117 100755
--- a/etc/grml/fai/config/scripts/GRMLBASE/96-apt-listbugs
+++ b/etc/grml/fai/config/scripts/GRMLBASE/96-apt-listbugs
@@ -22,11 +22,24 @@ if ifclass RELEASE ; then
   [ -n "$HOSTNAME" ] || HOSTNAME=grml
 
   if [ -r /etc/resolv.conf ] ; then
-     if [ -d $target/etc/resolvconf/run ] ; then
+    if [ -d $target/etc/resolvconf/run ] ; then # resolvconf
+      # 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
         cat /etc/resolv.conf >> $target/etc/resolvconf/run/resolv.conf
-     elif [ ! -L $target/etc/resolv.conf ] ; then
+      else
+        echo "Error: /etc/resolvconf/run/resolv.conf in chroot should not be a symlink." >&2
+        echo "       Looks like something is wrong, please fix manually." >&2
+        exit 1
+      fi
+    else # no resolvconf installed in chroot
+      if ! [ -L $target/etc/resolv.conf ] ; then
         cat /etc/resolv.conf >> $target/etc/resolv.conf
-     fi
+      else
+        echo "Error: /etc/resolv.conf in chroot should not be a symlink (resolvconf not installed)." >&2
+        exit 1
+      fi
+    fi
   fi
 
   if [ -x $target/usr/sbin/apt-listbugs -a -x $target/usr/bin/apt-show-source ] && \