unionfs_copyfile
int unionfs_copyfile(struct vnode *, int, struct ucred *, struct thread *);
error = unionfs_copyfile(ap->a_vp, (vap->va_size != 0),
error = unionfs_copyfile(ap->a_vp, 1, cnp->cn_cred, td);
error = unionfs_copyfile(fvp, 1, fcnp->cn_cred, td);
error = unionfs_copyfile(ap->a_vp, 1, td->td_ucred, td);
if ((error = unionfs_copyfile(ap->a_vp, 1, ap->a_cred, td)) != 0)
(error = unionfs_copyfile(ap->a_vp, 1, cred, td)) != 0) {
(error = unionfs_copyfile(ap->a_vp, 1, cred, td)) != 0) {
if ((error = unionfs_copyfile(ap->a_vp, 1, ap->a_cred, td)) != 0)
error = unionfs_copyfile(vp,