Date: Fri, 24 Dec 2010 15:30:36 +0100 From: "C. P. Ghost" <cpghost@cordula.ws> To: Mohammad Hedayati <hedayati.mo@gmail.com> Cc: freebsd-questions@freebsd.org Subject: Re: Inappropriate ioctl for device Message-ID: <AANLkTinC4VROgD40GM1v7Mfdzk7_rtwQOFfKaa--0gC_@mail.gmail.com> In-Reply-To: <AANLkTi=oUgvCMGtaayXnE%2BBW0nTbZSuuyXXkkOSg7Ccf@mail.gmail.com> References: <AANLkTi=oUgvCMGtaayXnE%2BBW0nTbZSuuyXXkkOSg7Ccf@mail.gmail.com>
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On Fri, Dec 24, 2010 at 11:21 AM, Mohammad Hedayati
<hedayati.mo@gmail.com> wrote:
> 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
Just a wild guess: are you sure you've hooked up your
ioctl() function to the struct cdevsw, i.e. something
like this?
static struct cdevsw yourdevice_cdevsw = {
.d_version = D_VERSION,
.d_read = yourdevice_read,
.d_write = yourdevice_write,
.d_ioctl = yourdevice_ioctl, /* <--- or just ioctl? */
.d_name = "yourdevice",
};
Perhaps you could ask on freebsd-hackers@ list instead?
> where's the problem?
-cpghost.
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