X-Git-Url: http://git.grml.org/?a=blobdiff_plain;f=usr_sbin%2Fgrml-chroot;h=e8ed430a61378f635c6c442fca91a74c3a34159b;hb=e18e3e5f9cd8e47281c580fab3a4acae49d97c08;hp=b3d118487a399f0cc277229aed2fe91ae62460a7;hpb=3b069a494fe989e75be26e5bc50efd8bb35d3109;p=grml-scripts.git

diff --git a/usr_sbin/grml-chroot b/usr_sbin/grml-chroot
index b3d1184..e8ed430 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 "$DEST_" ]; then
@@ -85,9 +90,29 @@ if [ ! -d "$DEST_" ]; then
 fi
 
 
-mountit "proc"  "proc"
-mountit "sysfs" "sys"
-mountit "/dev"   "dev"   "--bind"
+
+if [ -f "$DEST_"/proc/cmdline ] ; then
+    echo "Looks like $DEST_ already has filesystems mounted, skipping."
+else
+    mountit "proc"  "proc"
+    mountit "sysfs" "sys"
+    mountit "/dev"   "dev"   "--bind"
+    mountit "devpts" "dev/pts"
+    if [ -d /sys/firmware/efi/efivars ] ; then
+      mountit "efivarfs" "sys/firmware/efi/efivars"
+    fi
+    if [ -d "$DEST_"/run/udev ] && [ -d /run/udev ] ; then
+      mountit "/run/udev" "/run/udev" "--bind"
+    fi
+fi
+
+WROTE_DEBIAN_CHROOT=""
+if [ ! -f "$DEST_"/etc/debian_chroot ]; then
+    WROTE_DEBIAN_CHROOT="yes"
+    echo "Writing /etc/debian_chroot ..."
+    cat "$DEST_"/etc/hostname > "$DEST_"/etc/debian_chroot
+fi
+
 if (( $# < 1 )); then
     chroot "$DEST_"
     RC=$?
@@ -97,4 +122,8 @@ else
 fi
 umount_all
 
+if [ ! -z "$WROTE_DEBIAN_CHROOT" ]; then
+    rm "$DEST_"/etc/debian_chroot
+fi
+
 exit $RC