ctopen
static dev_type_open(ctopen);
.d_open = ctopen,
.d_open = ctopen,
{ "ct", ctstrategy, ctopen, ctclose, ctioctl }, /*0*/
int ctopen(struct open_file *, ...);
{ "ct", iodcstrategy, ctopen, ctclose, noioctl },
int ctopen(struct open_file *, ...);
dev_type_open(ctopen);
.d_open = ctopen,
.d_open = ctopen,