*** /etc/rc.d/functions	2012-05-07 11:38:17.563261914 +0200
--- /root/functions_new	2012-05-07 12:23:57.630824788 +0200
***************
*** 414,419 ****
--- 414,441 ----
  				stat_append "creating swapspace.."
  				mkswap -f -L $1 /dev/mapper/$1 >/dev/null
  			fi;;
+ 		TMP)
+ 			local _overwriteokay=0
+ 			if [[ -b $2 && -r $2 ]]; then
+ 				# This is DANGEROUS! If there is any known file system,
+ 				# partition table, RAID or LVM volume on the device
+ 				# we don't overwrite it.
+ 				#
+ 				# 'blkid' returns 2 if no valid signature has been found.
+ 				# Only in this case we should allow overwriting the device.
+ 				#
+ 				# This sanity check _should_ be sufficient, but it might not.
+ 				# This may cause dataloss if it is not used carefully.
+ 				blkid -p "$2" &>/dev/null
+ 				(( $? == 2 )) && _overwriteokay=1
+ 			fi
+ 			if (( _overwriteokay == 0 )); then
+ 				false
+ 			elif cryptsetup -d /dev/urandom $4 $open "$a" "$b" >/dev/null; then
+ 				stat_append "creating temporary filesystem.."
+ 				mkfs.ext4 -L $1 /dev/mapper/$1 >/dev/null
+ 			fi;;
+ 
  		ASK)
  			printf "\nOpening '$1' volume:\n"
  			cryptsetup $4 $open "$a" "$b" < /dev/console;;