1da177e4c3
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
61 lines
1.6 KiB
C
61 lines
1.6 KiB
C
/* -*- 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;
|
|
|
|
/* Possible values of bitmask for enabling sysrq functions */
|
|
/* 0x0001 is reserved for enable everything */
|
|
#define SYSRQ_ENABLE_LOG 0x0002
|
|
#define SYSRQ_ENABLE_KEYBOARD 0x0004
|
|
#define SYSRQ_ENABLE_DUMP 0x0008
|
|
#define SYSRQ_ENABLE_SYNC 0x0010
|
|
#define SYSRQ_ENABLE_REMOUNT 0x0020
|
|
#define SYSRQ_ENABLE_SIGNAL 0x0040
|
|
#define SYSRQ_ENABLE_BOOT 0x0080
|
|
#define SYSRQ_ENABLE_RTNICE 0x0100
|
|
|
|
struct sysrq_key_op {
|
|
void (*handler)(int, struct pt_regs *, struct tty_struct *);
|
|
char *help_msg;
|
|
char *action_msg;
|
|
int enable_mask;
|
|
};
|
|
|
|
#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 check_mask);
|
|
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
|