1 /* 2 * Unified handling of special chars. 3 * 4 * Copyright IBM Corp. 2001 5 * Author(s): Fritz Elfert <felfert@millenux.com> <elfert@de.ibm.com> 6 * 7 */ 8 9 #include <linux/tty.h> 10 11 extern unsigned int 12 ctrlchar_handle(const unsigned char *buf, int len, struct tty_struct *tty); 13 14 15 #define CTRLCHAR_NONE (1 << 8) 16 #define CTRLCHAR_CTRL (2 << 8) 17 #define CTRLCHAR_SYSRQ (3 << 8) 18 19 #define CTRLCHAR_MASK (~0xffu) 20