From 577e468b90c7207e03ebf864c9891a23573253d1 Mon Sep 17 00:00:00 2001 From: des Date: Tue, 28 May 2002 14:29:56 +0000 Subject: Add some checks to prevent NULL dereferences. Submitted by: jhay --- sys/kern/tty.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) diff --git a/sys/kern/tty.c b/sys/kern/tty.c index 1cd71ef..d571c72 100644 --- a/sys/kern/tty.c +++ b/sys/kern/tty.c @@ -2593,12 +2593,15 @@ sysctl_kern_ttys(SYSCTL_HANDLER_ARGS) xt.xt_cancc = tp->t_canq.c_cc; xt.xt_outcc = tp->t_outq.c_cc; XT_COPY(line); - xt.xt_dev = dev2udev(tp->t_dev); + if (tp->t_dev) + xt.xt_dev = dev2udev(tp->t_dev); XT_COPY(state); XT_COPY(flags); XT_COPY(timeout); - xt.xt_pgid = tp->t_pgrp->pg_id; - xt.xt_sid = tp->t_session->s_sid; + if (tp->t_pgrp) + xt.xt_pgid = tp->t_pgrp->pg_id; + if (tp->t_session) + xt.xt_sid = tp->t_session->s_sid; XT_COPY(termios); XT_COPY(winsize); XT_COPY(column); -- cgit v1.1