fix for when root subvolume is not /

1 files changed, 7 insertions, 4 deletions

diff --git a/list-all-subvolumes b/list-all-subvolumes
index fc19b69..d438832 100755
--- a/list-all-subvolumes
+++ b/list-all-subvolumes
@@ -39,16 +39,19 @@ extract_subvolume_path()
             then
                 root=${tryroot#$1/}
                 break
-            elif [ "$tryroot" = / ]
+            elif [ ! "$tryroot" -o "$tryroot" = / ]
             then
                 break
             else
                 tryroot=${tryroot%/*}
             fi
         done
-        case "$path" in
-            "$root" | "$root"/*) path=$root/.${path#$root} ;;
-        esac
+        if [ "$root" ]
+        then
+            case "$path" in
+                "$root" | "$root"/*) path=$root/.${path#$root} ;;
+            esac
+        fi
         printf '%s//%s\n' "${1##*/}" "$path"
     done
 }