Konstantin Belousov 6ed4cfc05d Do not allow the SNPSTTY ioctl for the snoop device that has a tty ... attached. Otherwise, the snp->snp_tty would be overwritten, while the tty line discipline still set to the snpdisc. Then snplwrite() causes panic because ttytosnp() cannot find the snp. MFC after: 1 week		2007-12-03 14:02:27 +00:00
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snp.c	Do not allow the SNPSTTY ioctl for the snoop device that has a tty	2007-12-03 14:02:27 +00:00