add space name during listStorageSpaces on decomposedfs (#2090)

changelog/unreleased/add-space-name-attribute.md

@@ -0,0 +1,5 @@
+Enhancement: Return space name during list storage spaces
+
+In the decomposedfs we return now the space name in the response which is stored in the extended attributes.
+
+https://github.com/cs3org/reva/issues/2090

pkg/storage/utils/decomposedfs/spaces.go

@@ -217,14 +217,21 @@ func (fs *Decomposedfs) ListStorageSpaces(ctx context.Context, filter []*provide
 				// Mtime is set either as node.tmtime or as fi.mtime below
 			}
 
-			if space.SpaceType == "share" {
+			switch space.SpaceType {
+			case "share":
 				if utils.UserEqual(u.Id, owner) {
 					// do not list shares as spaces for the owner
 					continue
 				}
-			} else {
-				space.Name = "root" // do not expose the id as name, this is the root of a space
-				// TODO read from extended attribute for project / group spaces
+			case "project":
+				sname, err := xattr.Get(n.InternalPath(), xattrs.SpaceNameAttr)
+				if err != nil {
+					appctx.GetLogger(ctx).Error().Err(err).Interface("node", n).Msg("could not read space name, attribute not found")
+					continue
+				}
+				space.Name = string(sname)
+			default:
+				space.Name = "root"
 			}
 
 			// filter out spaces user cannot access (currently based on stat permission)