Mount volumes as super user

This used to be the case, but regressed after a recent change.
Also made a few fixes around it and clean up the code a bit.

Closes #720

PiperOrigin-RevId: 265717496

1 files changed, 6 insertions, 6 deletions

diff --git a/runsc/boot/user_test.go b/runsc/boot/user_test.go
index 01f666507..906baf3e5 100644
--- a/runsc/boot/user_test.go
+++ b/runsc/boot/user_test.go
@@ -164,13 +164,13 @@ func TestGetExecUserHome(t *testing.T) {
 				},
 			}
 
-			var mns *fs.MountNamespace
-			setMountNS := func(m *fs.MountNamespace) {
-				mns = m
-				ctx.(*contexttest.TestContext).RegisterValue(fs.CtxRoot, mns.Root())
-			}
 			mntr := newContainerMounter(spec, []int{sandEnd}, nil, &podMountHints{})
-			if err := mntr.setupRootContainer(ctx, ctx, conf, setMountNS); err != nil {
+			mns, err := mntr.createMountNamespace(ctx, conf)
+			if err != nil {
+				t.Fatalf("failed to create mount namespace: %v", err)
+			}
+			ctx = fs.WithRoot(ctx, mns.Root())
+			if err := mntr.mountSubmounts(ctx, conf, mns); err != nil {
 				t.Fatalf("failed to create mount namespace: %v", err)
 			}