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H A D | pty.c | diff 77360 Mon May 28 20:22:12 MDT 2001 phk With the new kernel dev_t conversions done at release 4.X, it becomes possible to trap in ptsstop() in kern/tty_pty.c if the slave side has never been opened during the life of a kernel. What happens is that calls to ttyflush() done from ptyioctl() for the controlling side end up calling ptsstop() [via (*tp->t_stop)(tp, <X>)] which evaluates the following: struct pt_ioctl *pti = tp->t_dev->si_drv1; In order for tp->t_dev to be set, the slave device must first be opened in ttyopen() [kern/tty.c]. It appears that the only problem is calls to (*tp->t_stop)(tp, <n>), so this could also happen with other ioctls initiated by the controlling side before the slave has been opened. PR: 27698 Submitted by: David Bein bein@netapp.com MFC after: 6 days |
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