X-Git-Url: https://git.arvados.org/arvados.git/blobdiff_plain/aabde5c5f0cba198c90558a3f3bb100ea9a09b6d..8c7fb5f13cb167740b7b228c7fab40f2980d1978:/services/api/app/models/arvados_model.rb

diff --git a/services/api/app/models/arvados_model.rb b/services/api/app/models/arvados_model.rb
index 1fe5808848..02e9386bfe 100644
--- a/services/api/app/models/arvados_model.rb
+++ b/services/api/app/models/arvados_model.rb
@@ -308,8 +308,13 @@ class ArvadosModel < ActiveRecord::Base
     # Verify "write" permission on new owner
     # default fail unless one of:
     # current_user is this object
-    # current user can_write new owner
-    unless current_user == self or current_user.can? write: owner_uuid
+    # current user can_write new owner, or this object if owner unchanged
+    if new_record? or owner_uuid_changed? or is_a?(ApiClientAuthorization)
+      write_target = owner_uuid
+    else
+      write_target = uuid
+    end
+    unless current_user == self or current_user.can? write: write_target
       logger.warn "User #{current_user.uuid} tried to modify #{self.class.to_s} #{uuid} but does not have permission to write new owner_uuid #{owner_uuid}"
       errors.add :owner_uuid, "cannot be changed without write permission on new owner"
       raise PermissionDeniedError