root/fs/ioctl.c

/* */

DEFINITIONS

1. sys_ioctl

   1 /*
   2  *  linux/fs/ioctl.c
   3  *
   4  *  (C) 1991  Linus Torvalds
   5  */
   6 
   7 #include <linux/string.h>
   8 #include <errno.h>
   9 #include <sys/stat.h>
  10 
  11 #include <linux/sched.h>
  12 
  13 int sys_ioctl(unsigned int fd, unsigned int cmd, unsigned long arg)
     /*  */
  14 {       
  15         struct file * filp;
  16 
  17         if (fd >= NR_OPEN || !(filp = current->filp[fd]))
  18                 return -EBADF;
  19         if (filp->f_op && filp->f_op->ioctl)
  20                 return filp->f_op->ioctl(filp->f_inode, filp, cmd,arg);
  21         return -EINVAL;
  22 }

/* */