fs/ioctl.c

/*
 *  linux/fs/ioctl.c
 *
 *  (C) 1991  Linus Torvalds
 */

#include <errno.h>

#include <linux/string.h>
#include <linux/stat.h>
#include <linux/sched.h>

int sys_ioctl(unsigned int fd, unsigned int cmd, unsigned long arg)
{	
	struct file * filp;

	if (fd >= NR_OPEN || !(filp = current->filp[fd]))
		return -EBADF;
	if (filp->f_op && filp->f_op->ioctl)
		return filp->f_op->ioctl(filp->f_inode, filp, cmd,arg);
	return -EINVAL;
}