drivers/s390/char/ctrlchar.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /*
   3  *  Unified handling of special chars.
   4  *
   5  *    Copyright IBM Corp. 2001
   6  *    Author(s): Fritz Elfert <felfert@millenux.com> <elfert@de.ibm.com>
   7  *
   8  */
   9
  10 #include <linux/tty.h>
  11 #include <linux/sysrq.h>
  12 #include <linux/workqueue.h>
  13
  14 extern unsigned int
  15 ctrlchar_handle(const unsigned char *buf, int len, struct tty_struct *tty);
  16
  17
  18 #define CTRLCHAR_NONE  (1 << 8)
  19 #define CTRLCHAR_CTRL  (2 << 8)
  20 #define CTRLCHAR_SYSRQ (3 << 8)
  21
  22 #define CTRLCHAR_MASK (~0xffu)
  23
  24
  25 #ifdef CONFIG_MAGIC_SYSRQ
  26 struct sysrq_work {
  27         int key;
  28         struct work_struct work;
  29 };
  30
  31 void schedule_sysrq_work(struct sysrq_work *sw);
  32 #endif