--- a/sbin/ftjail	Sat Sep 10 18:16:37 2022 +0200
+++ b/sbin/ftjail	Sat Sep 10 19:13:41 2022 +0200
@@ -90,6 +90,7 @@
 
     '
     local _mountpoint
+    
     local _ds _mount _rest
 
     _mountpoint="$1"
@@ -111,15 +112,28 @@
 # PARENT-BASE NAME DRY-RUN
 #
 command_datasets_tmpl_base() {
-    local _p_base _name _dry_run
+    local _p_base _name
+
+    local _opt_dry_run
+
+    local _ds_base _opt
 
-    local _ds_base
-
-    _ensure_no_options "$@"
+    _opt_dry_run=""
+    while getopts "nu" _opt ; do
+        case ${_opt} in
+            n|u)
+                _opt_dry_run="yes"
+                ;;
+            \?|:)
+                return 2;
+                ;;
+        esac
+    done
+    shift $((OPTIND-1))
+    OPTIND=1        
 
     _p_base="${1-}"
     _name="${2-}"
-    _dry_run="${3-}"
 
     if [ -z "${_p_base}" ]; then
         echo "ERROR: no parent dataset for base given" >&2
@@ -141,7 +155,7 @@
     fi
 
 
-    [ "${_dry_run}" = "yes" ] && return 0
+    [ "${_opt_dry_run}" = "yes" ] && return 0
 
     echo "Creating RO base datasets in:"
     printf "\\t%s\\n" "${_ds_base}"
@@ -155,15 +169,28 @@
 # SKELETON NAME DRY-RUN
 #
 command_datasets_tmpl_skel() {
-    local _p_base _name _dry_run
+    local _p_base _name
+
+    local _opt_dry_run
+
+    local _ds_skel _child _child_zfsopts _opt
 
-    local _ds_skel _child _child_zfsopts
-
-    _ensure_no_options "$@"
+    _opt_dry_run=""
+    while getopts "nu" _opt ; do
+        case ${_opt} in
+            n|u)
+                _opt_dry_run="yes"
+                ;;
+            \?|:)
+                return 2;
+                ;;
+        esac
+    done
+    shift $((OPTIND-1))
+    OPTIND=1    
 
     _p_skel="${1-}"
     _name="${2-}"
-    _dry_run="${3-}"
 
     if [ -z "${_p_skel}" ]; then
         echo "ERROR: no parent dataset for skeleton given" >&2
@@ -185,7 +212,7 @@
     fi
 
 
-    [ "${_dry_run}" = "yes" ] && return 0
+    [ "${_opt_dry_run}" = "yes" ] && return 0
 
     echo "Creating RW skeleton datasets in:"
     printf "\\t%s\\n" "${_ds_skel}"
@@ -244,8 +271,8 @@
     _name="${3-}"
 
     # Check preconditions
-    command_datasets_tmpl_base "${_p_base}" "${_name}" "yes" || return
-    command_datasets_tmpl_skel "${_p_skel}" "${_name}" "yes" || return
+    command_datasets_tmpl_base -n "${_p_base}" "${_name}" || return
+    command_datasets_tmpl_skel -n "${_p_skel}" "${_name}" || return
 
     # Really do it
     command_datasets_tmpl_base "${_p_base}" "${_name}" || return
@@ -311,6 +338,7 @@
 #
 _do_mount() {
     local _dsname _mountpoint _dry_run _mount_natural
+    
     local _name _mp _canmount _mounted
     local _rootds_mountpoint _relative_mp _real_mp
 
@@ -411,8 +439,9 @@
 #
 command_mount_tmpl() {
     local _ds_base _ds_skel _mountpoint
+    local _opt_dry_run
 
-    local _opt_dry_run _opt
+    local _opt
 
     _opt_dry_run=""
 
@@ -450,6 +479,7 @@
 #
 _do_umount() {
     local _dsname
+    
     local _name _mp _rest
     local _rootds_mountpoint