Do not create target directory in /dev

grml-debootstrap used to happily create a target directory in /dev if
for instance one forgot to partition sda. To avoid such a mistake it
feels better to abort the installation.

Closes: grml/grml-debootstrap#99

diff --git a/grml-debootstrap b/grml-debootstrap
index ab7c577..776825d 100755 (executable)
--- a/grml-debootstrap
+++ b/grml-debootstrap
@@ -1187,6 +1187,12 @@ set_target_directory(){
 if [ -b "$TARGET" ] || [ -n "$VIRTUAL" ] ; then
     PARTITION=1
 else
 if [ -b "$TARGET" ] || [ -n "$VIRTUAL" ] ; then
     PARTITION=1
 else

+    # $TARGET was not detected as block device, but we do not want to create target directory in /dev/
+    if [[ $TARGET == "/dev/"* ]]; then
+      eerror "Error: Will not create target directory $TARGET in /dev."
+      eerror "  Please check the partition(s) of the blockdevice."; eend 1
+      bailout 1
+    fi

     set_target_directory
 fi
 # }}}
     set_target_directory
 fi
 # }}}