Date: Fri, 2 Jan 2009 23:39:29 +0000 (UTC) From: Ed Schouten <ed@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r186707 - head/sys/kern Message-ID: <200901022339.n02NdTjf010587@svn.freebsd.org>
next in thread | raw e-mail | index | archive | help
Author: ed Date: Fri Jan 2 23:39:29 2009 New Revision: 186707 URL: http://svn.freebsd.org/changeset/base/186707 Log: Fix a corner case in my previous commit. Even though there are not many setups that have absolutely no console device, make sure a close() on a TTY doesn't dereference a null pointer. Modified: head/sys/kern/tty.c Modified: head/sys/kern/tty.c ============================================================================== --- head/sys/kern/tty.c Fri Jan 2 23:32:43 2009 (r186706) +++ head/sys/kern/tty.c Fri Jan 2 23:39:29 2009 (r186707) @@ -312,7 +312,8 @@ ttydev_close(struct cdev *dev, int fflag * Don't actually close the device if it is being used as the * console. */ - if (strcmp(dev_console_filename, tty_devname(tp)) == 0) + if (dev_console_filename != NULL && + strcmp(dev_console_filename, tty_devname(tp)) == 0) return (0); tty_lock(tp);
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?200901022339.n02NdTjf010587>