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git.proxmox.com Git - mirror_ubuntu-zesty-kernel.git/blob - include/linux/sysrq.h
3 * $Id: sysrq.h,v 1.3 1997/07/17 11:54:33 mj Exp $
5 * Linux Magic System Request Key Hacks
7 * (c) 1997 Martin Mares <mj@atrey.karlin.mff.cuni.cz>
9 * (c) 2000 Crutcher Dunnavant <crutcher+kernel@datastacks.com>
10 * overhauled to use key registration
11 * based upon discusions in irc://irc.openprojects.net/#kernelnewbies
14 #include <linux/config.h>
19 /* Possible values of bitmask for enabling sysrq functions */
20 /* 0x0001 is reserved for enable everything */
21 #define SYSRQ_ENABLE_LOG 0x0002
22 #define SYSRQ_ENABLE_KEYBOARD 0x0004
23 #define SYSRQ_ENABLE_DUMP 0x0008
24 #define SYSRQ_ENABLE_SYNC 0x0010
25 #define SYSRQ_ENABLE_REMOUNT 0x0020
26 #define SYSRQ_ENABLE_SIGNAL 0x0040
27 #define SYSRQ_ENABLE_BOOT 0x0080
28 #define SYSRQ_ENABLE_RTNICE 0x0100
31 void (*handler
)(int, struct pt_regs
*, struct tty_struct
*);
37 #ifdef CONFIG_MAGIC_SYSRQ
39 /* Generic SysRq interface -- you may call it from any device driver, supplying
40 * ASCII code of the key, pointer to registers and kbd/tty structs (if they
41 * are available -- else NULL's).
44 void handle_sysrq(int, struct pt_regs
*, struct tty_struct
*);
45 void __handle_sysrq(int, struct pt_regs
*, struct tty_struct
*, int check_mask
);
46 int register_sysrq_key(int, struct sysrq_key_op
*);
47 int unregister_sysrq_key(int, struct sysrq_key_op
*);
48 struct sysrq_key_op
*__sysrq_get_key_op(int key
);
52 static inline int __reterr(void)
57 #define register_sysrq_key(ig,nore) __reterr()
58 #define unregister_sysrq_key(ig,nore) __reterr()