Date: Fri, 24 Dec 2010 13:47:25 -0500 From: dieterbsd@engineer.com To: freebsd-drivers@freebsd.org Subject: Re: Inappropriate ioctl for device Message-ID: <8CD71B2243BC410-958-12946@web-mmc-d03.sysops.aol.com>
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> 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?
You should only call perror if ioctl returned -1.
Try:
len = ioctl(cd, 0);
if (len == -1)
{
perror("ioctl");
}
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