cpr_open_deffile
if (error = cpr_open_deffile(FREAD, &vp))
if (rc = cpr_open_deffile(FCREAT|FWRITE, &vp))
cpr_open_deffile(FCREAT|FWRITE, &vp))
extern int cpr_open_deffile(int, vnode_t **);
if (rc = cpr_open_deffile(FREAD|FWRITE, &vp)) {
if (rc = cpr_open_deffile(FREAD, &vp)) {