Date: Fri, 24 Dec 2010 18:17:18 +0330 From: Mohammad Hedayati <hedayati.mo@gmail.com> To: freebsd-hackers@freebsd.org Subject: Inappropriate ioctl for device Message-ID: <AANLkTimuz3KWG80yXR8gmg%2BYxVKW0pQyF2wtfwXqKU3K@mail.gmail.com>
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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
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