/*
   *  Unified handling of special chars.
   *
   *    Copyright IBM Corp. 2001
   *    Author(s): Fritz Elfert <felfert@millenux.com> <elfert@de.ibm.com>
   *
   */
  
  #include <linux/tty.h>
  
  extern unsigned int
  ctrlchar_handle(const unsigned char *buf, int len, struct tty_struct *tty);
  
  
  #define CTRLCHAR_NONE  (1 << 8)
  #define CTRLCHAR_CTRL  (2 << 8)
  #define CTRLCHAR_SYSRQ (3 << 8)
  
  #define CTRLCHAR_MASK (~0xffu)