static int
pty_select(struct file *filp,int rw) {
int output = 0;
if (rw == SELECT_EXCEPT) return 0;
lock_pty(minor(filp->f_dev));
k1printf("pty_select: %d\n",__envid);
if (filp->f_pos) {
switch(rw) {
case SELECT_READ:
output = (ptcselect(filp->f_dev,SELECT_READ,0));
break;
case SELECT_WRITE:
output = (ptcselect(filp->f_dev,SELECT_WRITE,0));
break;
default:
output = (ptcselect(filp->f_dev,SELECT_EXCEPT,0));
break;
}
} else {
switch(rw) {
case SELECT_READ:
output = (ttselect(filp->f_dev,SELECT_READ,0));
break;
case SELECT_WRITE:
output = (ttselect(filp->f_dev,SELECT_WRITE,0));
break;
default:
output = (ttselect(filp->f_dev,SELECT_EXCEPT,0));
break;
}
}
unlock_pty(minor(filp->f_dev));
return output;
}
/*
* Mouse activity select routine
*/
qvselect(dev_t dev, rw)
{
register int s = spl5();
register struct qv_info *qp = qv_scn;
if( QVCHAN(minor(dev)) == QVMOUSECHAN )
switch(rw) {
case FREAD: /* if events okay */
if(qp->ihead != qp->itail) {
splx(s);
return(1);
}
qvrsel = u.u_procp;
splx(s);
return(0);
default: /* can never write */
splx(s);
return(0);
}
else {
splx(s);
return( ttselect(dev, rw) );
}
/*NOTREACHED*/
}