4ee65031511922da5d95c95e08f7a20ef57bbeda
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 #ifndef _LINUX_SYSRQ_H
15 #define _LINUX_SYSRQ_H
17 #include <linux/errno.h>
22 /* Possible values of bitmask for enabling sysrq functions */
23 /* 0x0001 is reserved for enable everything */
24 #define SYSRQ_ENABLE_LOG 0x0002
25 #define SYSRQ_ENABLE_KEYBOARD 0x0004
26 #define SYSRQ_ENABLE_DUMP 0x0008
27 #define SYSRQ_ENABLE_SYNC 0x0010
28 #define SYSRQ_ENABLE_REMOUNT 0x0020
29 #define SYSRQ_ENABLE_SIGNAL 0x0040
30 #define SYSRQ_ENABLE_BOOT 0x0080
31 #define SYSRQ_ENABLE_RTNICE 0x0100
40 #ifdef CONFIG_MAGIC_SYSRQ
42 /* Generic SysRq interface -- you may call it from any device driver, supplying
43 * ASCII code of the key, pointer to registers and kbd/tty structs (if they
44 * are available -- else NULL's).
47 void handle_sysrq(int key
, struct tty_struct
*tty
);
48 void __handle_sysrq(int key
, struct tty_struct
*tty
, int check_mask
);
49 int register_sysrq_key(int key
, struct sysrq_key_op
*op
);
50 int unregister_sysrq_key(int key
, struct sysrq_key_op
*op
);
51 struct sysrq_key_op
*__sysrq_get_key_op(int key
);
53 int sysrq_toggle_support(int enable_mask
);
57 static inline void handle_sysrq(int key
, struct tty_struct
*tty
)
61 static inline void __handle_sysrq(int key
, struct tty_struct
*tty
, int check_mask
);
65 static inline int register_sysrq_key(int key
, struct sysrq_key_op
*op
)
70 static inline int unregister_sysrq_key(int key
, struct sysrq_key_op
*op
)
77 #endif /* _LINUX_SYSRQ_H */
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