I'm writing a simple char device. So far everything went so good
(read/write), but here I'm going to add support for ioctl.
int
ioctl(struct cdev *dev, u_long cmd, caddr_t data, int flags, struct thread *td)
{
int error = 0;
uprintf("Here...\n");
return(error);
}
and I'm calling it here:
len = ioctl(cd, 0, "");
perror("ioctl");
but when runnig it says:
ioctl: Inappropriate ioctl for device
where's the problem?
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