diff --git a/functions b/functions
index 0c407e9..2325a86 100644
--- a/functions
+++ b/functions
@@ -423,8 +423,9 @@ add_full_dir() {
     # No parsing is performed and the contents of the directory is added as is.
     #   $1: path to directory
     #   $2: glob pattern to filter file additions (optional)
+    #   $3: path prefix that will be stripped off from the image path (optional)
 
-    local f= filter=${2:-*}
+    local f= filter=${2:-*} strip_prefix=$3
 
     if [[ -n $1 && -d $1 ]]; then
         add_dir "$1"
@@ -432,13 +433,13 @@ add_full_dir() {
         for f in "$1"/*; do
             if [[ -L $f ]]; then
                 if [[ $f = $filter ]]; then
-                    add_symlink "$f" "$(readlink "$f")"
+                    add_symlink "${f#$strip_prefix}" "$(readlink "$f")"
                 fi
             elif [[ -d $f ]]; then
-                add_full_dir "$f" "$filter"
+                add_full_dir "$f" "$filter" "$strip_prefix"
             elif [[ -f $f ]]; then
                 if [[ $f = $filter ]]; then
-                    add_file "$f"
+                    add_file "$f" "${f#$strip_prefix}"
                 fi
             fi
         done
diff --git a/man/mkinitcpio.8.txt b/man/mkinitcpio.8.txt
index 5c3118e..931a167 100644
--- a/man/mkinitcpio.8.txt
+++ b/man/mkinitcpio.8.txt
@@ -139,7 +139,7 @@ functions exist to facilitate this.
 
 	Adds a directory and its parents to the image.
 
-*add_full_dir* 'directory' [ 'glob' ]::
+*add_full_dir* 'directory' [ 'glob' ] [ 'strip_prefix' ]::
 
 	Recursively adds a directory to the image by walking the given path and
 	calling *add_file*, *add_dir*, and *add_symlink* accordingly. This function
@@ -148,6 +148,11 @@ functions exist to facilitate this.
 	If the 'glob' argument is passed, only files and symlinks matching this glob
 	will be added.
 
+	If the 'strip_prefix' argument is passed, it will be used to strip the
+	destination path (path in the initramfs image) from the prefix specified by
+	the 'strip_prefix' argument. This can be useful when writing rootfs-overlay
+	hooks.
+
 *add_symlink* 'path' [ 'link-target' ]::
 
 	Adds a symlink to the image at the specified `path`, optionally pointing to