keep compat arguments for "inst"

dracut-functions

@@ -153,12 +153,17 @@ inst_rules() {
 # general purpose installation function
 # Same args as above.
 inst() {
-    if (($# != 1 && $# != 2)); then
+    if (($# != 1 && $# != 2 && $# != 3)); then
         echo "usage: inst <file> <root> [<destination file>]"
         return 1
     fi
+    local dst
+    [ $# = 3 ] && dst=$3
+    if [ $# = 2 ]; then 
+        [ -d "$2" ] || dst=$2
+    fi
     for x in inst_symlink inst_script inst_binary inst_simple; do
-       $x "$@" && return 0
+       $x $1 $dst && return 0
     done
     return 1
 }