BRD_OPEN
return (BRD_OPEN(bfs_ops, (char *)filename, flags));
return (BRD_OPEN(bfs_ops, filename, flags));
fd = BRD_OPEN(bfs_ops, "/boot/solaris/bootenv.rc", 0);
extern int BRD_OPEN(struct boot_fs_ops *, char *, int);