X-Git-Url: https://git.arvados.org/arvados.git/blobdiff_plain/efa2c6e65983a0917119d7eaf1daa42bc440f52a..9f842eecf59f293fd800ece28be2730ff3a39487:/sdk/go/arvados/collection_fs.go

diff --git a/sdk/go/arvados/collection_fs.go b/sdk/go/arvados/collection_fs.go
index 7bbbaa492c..d8ee2a2b1c 100644
--- a/sdk/go/arvados/collection_fs.go
+++ b/sdk/go/arvados/collection_fs.go
@@ -1078,6 +1078,10 @@ func (dn *dirnode) Rename(oldname, newname string) error {
 	if !ok {
 		return os.ErrNotExist
 	}
+	if locked[oldinode] {
+		// oldinode cannot become a descendant of itself.
+		return ErrInvalidArgument
+	}
 	if existing, ok := newdn.inodes[newname]; ok {
 		// overwriting an existing file or dir
 		if dn, ok := existing.(*dirnode); ok {