34c34
< * $FreeBSD: head/sys/kern/tty_pty.c 53483 1999-11-21 02:54:54Z jkh $
---
> * $FreeBSD: head/sys/kern/tty_pty.c 57070 2000-02-09 03:32:11Z rwatson $
120a121
> struct prison *pt_prison;
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> struct pt_ioctl *pti;
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> pti = dev->si_drv1;
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< } else if (tp->t_state & TS_XCLUDE && suser(p))
---
> } else if (tp->t_state & TS_XCLUDE && suser(p)) {
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> } else if (pti->pt_prison != p->p_prison) {
> return (EBUSY);
> }
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> pti->pt_prison = p->p_prison;