K 10 svn:author V 3 ken K 8 svn:date V 27 1998-09-16T00:11:53.000000Z K 7 svn:log V 227 Check to make sure that this device is opened read-write, not just read only. Previously, if the device was chmoded 644, someone could open it with the O_RDONLY flag and issue any ioctl to the device. Reviewed by: imp, gibbs END