X-Git-Url: https://git.arvados.org/arvados.git/blobdiff_plain/2d29045a1b392251b777639634e527abfd8b06e2..b660e9b929f79fc567788ad7282d3ca564718c3c:/sdk/go/arvados/fs_collection.go

diff --git a/sdk/go/arvados/fs_collection.go b/sdk/go/arvados/fs_collection.go
index 26012e2406..eb3e974ede 100644
--- a/sdk/go/arvados/fs_collection.go
+++ b/sdk/go/arvados/fs_collection.go
@@ -954,6 +954,17 @@ func (dn *dirnode) Child(name string, replace func(inode) (inode, error)) (inode
 		gn.SetParent(dn, name)
 		return gn, nil
 	}
+	if dn == dn.fs.rootnode() && name == ".arvados#collection_id" {
+		gn := &getternode{Getter: func() ([]byte, error) {
+			data, err := json.Marshal(Collection{UUID: dn.fs.uuid})
+			if err == nil {
+				data = append(data, '\n')
+			}
+			return data, err
+		}}
+		gn.SetParent(dn, name)
+		return gn, nil
+	}
 	return dn.treenode.Child(name, replace)
 }