X-Git-Url: http://git.grml.org/?p=grml-scripts.git;a=blobdiff_plain;f=usr_sbin%2Fgrml-chroot;h=3b2750549765bd47f3c55309f4b36ac6954863e4;hp=e9c1ae35e054d780f04af08171f5110bc1c1a703;hb=74367b9f37596ec5c775c4e44a3ecf45366a2232;hpb=01e3fafa6cfa747d4fc8d21fc13df200e0ed137d

diff --git a/usr_sbin/grml-chroot b/usr_sbin/grml-chroot
index e9c1ae3..3b27505 100755
--- a/usr_sbin/grml-chroot
+++ b/usr_sbin/grml-chroot
@@ -55,7 +55,8 @@ function mountit
 
 function umount_all
 {
-    for i in $MOUNTED_; do
+    local reverse=$(echo $MOUNTED_ | awk '{ for (i=NF; i>1; i--) printf("%s ",$i); print $1; }')
+    for i in $reverse; do
         umount "${DEST_}/$i"
     done
 }
@@ -78,6 +79,10 @@ if (( $# < 1 )); then
     die "Wrong number of arguments."
 fi
 
+if ! which awk >/dev/null 2>&1 ; then
+  die "No awk binary found, required for execution."
+fi
+
 DEST_="$1"; shift
 
 if [ ! -d "$DEST_" ]; then
@@ -85,9 +90,18 @@ if [ ! -d "$DEST_" ]; then
 fi
 
 
-mountit "proc"  "proc"
-mountit "sysfs" "sys"
-mountit "/dev"   "dev"   "--bind"
+
+if [ -f "$DEST_"/proc/cmdline ] ; then
+    echo "Looks like $DEST_ already has filesystems mounted, skipping."
+else
+    mountit "proc"  "proc"
+    mountit "sysfs" "sys"
+    mountit "/dev"   "dev"   "--bind"
+    mountit "devpts" "dev/pts"
+    if [ -d "$DEST_"/run/udev ] && [ -d /run/udev ] ; then
+      mountit "/run/udev" "/run/udev" "--bind"
+    fi
+fi
 
 WROTE_DEBIAN_CHROOT=""
 if [ ! -f "$DEST_"/etc/debian_chroot ]; then