say, does anybody know where, in isofs/cd9660/cd9660_vnops.c, the 
function:

int
cd9660_pathconf(v)
        void *v;
{
        struct vop_pathconf_args /* {
                struct vnode *a_vp;
                int a_name;
                register_t *a_retval;
        } */ *ap = v;
        switch (ap->a_name) {
        case _PC_LINK_MAX:
        case _PC_NAME_MAX:
        case _PC_PATH_MAX:
        case _PC_PIPE_BUF:
        case _PC_CHOWN_RESTRICTED:

the values of a_name for the switch are declared?  I'm just catching up after
a few months away, and can't compile a kernel because they are undeclared.. 
vop_pathconf_args is defined in sys/vnode_if.h (and is slightly different to
the commented out version above, if that is a bad thing..)

iain