| /* -*- linux-c -*- |
| * |
| * $Id: sysrq.h,v 1.3 1997/07/17 11:54:33 mj Exp $ |
| * |
| * Linux Magic System Request Key Hacks |
| * |
| * (c) 1997 Martin Mares <mj@atrey.karlin.mff.cuni.cz> |
| * |
| * (c) 2000 Crutcher Dunnavant <crutcher+kernel@datastacks.com> |
| * overhauled to use key registration |
| * based upon discusions in irc://irc.openprojects.net/#kernelnewbies |
| */ |
| |
| #include <linux/config.h> |
| |
| struct pt_regs; |
| struct tty_struct; |
| |
| struct sysrq_key_op { |
| void (*handler)(int, struct pt_regs *, struct tty_struct *); |
| char *help_msg; |
| char *action_msg; |
| }; |
| |
| #ifdef CONFIG_MAGIC_SYSRQ |
| |
| /* Generic SysRq interface -- you may call it from any device driver, supplying |
| * ASCII code of the key, pointer to registers and kbd/tty structs (if they |
| * are available -- else NULL's). |
| */ |
| |
| void handle_sysrq(int, struct pt_regs *, struct tty_struct *); |
| void __handle_sysrq(int, struct pt_regs *, struct tty_struct *); |
| int register_sysrq_key(int, struct sysrq_key_op *); |
| int unregister_sysrq_key(int, struct sysrq_key_op *); |
| struct sysrq_key_op *__sysrq_get_key_op(int key); |
| |
| #else |
| |
| static inline int __reterr(void) |
| { |
| return -EINVAL; |
| } |
| |
| #define register_sysrq_key(ig,nore) __reterr() |
| #define unregister_sysrq_key(ig,nore) __reterr() |
| |
| #endif |