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[/] [test_project/] [trunk/] [linux_sd_driver/] [include/] [linux/] [sysrq.h] - Blame information for rev 81

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/* -*- 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
 */
 
#ifndef _LINUX_SYSRQ_H
#define _LINUX_SYSRQ_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 tty_struct *);
        char *help_msg;
        char *action_msg;
        int enable_mask;
};
 
#ifdef CONFIG_MAGIC_SYSRQ
 
extern int sysrq_on(void);
 
/*
 * Do not use this one directly:
 */
extern int __sysrq_enabled;
 
/* 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 key, struct tty_struct *tty);
void __handle_sysrq(int key, struct tty_struct *tty, int check_mask);
int register_sysrq_key(int key, struct sysrq_key_op *op);
int unregister_sysrq_key(int key, struct sysrq_key_op *op);
struct sysrq_key_op *__sysrq_get_key_op(int key);
 
#else
 
static inline int sysrq_on(void)
{
        return 0;
}
static inline int __reterr(void)
{
        return -EINVAL;
}
static inline void handle_sysrq(int key, struct tty_struct *tty)
{
}
 
#define register_sysrq_key(ig,nore) __reterr()
#define unregister_sysrq_key(ig,nore) __reterr()
 
#endif
 
#endif /* _LINUX_SYSRQ_H */

Line No.	Rev	Author	Line
1	62	marcus.erl	`/* -- linux-c --`
2			`*`
3			`* $Id: sysrq.h,v 1.3 1997/07/17 11:54:33 mj Exp $`
4			`*`
5			`* Linux Magic System Request Key Hacks`
6			`*`
7			`* (c) 1997 Martin Mares <mj@atrey.karlin.mff.cuni.cz>`
8			`*`
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`
12			`*/`
13
14			`#ifndef _LINUX_SYSRQ_H`
15			`#define _LINUX_SYSRQ_H`
16
17			`struct pt_regs;`
18			`struct tty_struct;`
19
20			`/* Possible values of bitmask for enabling sysrq functions */`
21			`/* 0x0001 is reserved for enable everything */`
22			`#define SYSRQ_ENABLE_LOG 0x0002`
23			`#define SYSRQ_ENABLE_KEYBOARD 0x0004`
24			`#define SYSRQ_ENABLE_DUMP 0x0008`
25			`#define SYSRQ_ENABLE_SYNC 0x0010`
26			`#define SYSRQ_ENABLE_REMOUNT 0x0020`
27			`#define SYSRQ_ENABLE_SIGNAL 0x0040`
28			`#define SYSRQ_ENABLE_BOOT 0x0080`
29			`#define SYSRQ_ENABLE_RTNICE 0x0100`
30
31			`struct sysrq_key_op {`
32			`void (handler)(int, struct tty_struct );`
33			`char *help_msg;`
34			`char *action_msg;`
35			`int enable_mask;`
36			`};`
37
38			`#ifdef CONFIG_MAGIC_SYSRQ`
39
40			`extern int sysrq_on(void);`
41
42			`/*`
43			`* Do not use this one directly:`
44			`*/`
45			`extern int __sysrq_enabled;`
46
47			`/* Generic SysRq interface -- you may call it from any device driver, supplying`
48			`* ASCII code of the key, pointer to registers and kbd/tty structs (if they`
49			`* are available -- else NULL's).`
50			`*/`
51
52			`void handle_sysrq(int key, struct tty_struct *tty);`
53			`void __handle_sysrq(int key, struct tty_struct *tty, int check_mask);`
54			`int register_sysrq_key(int key, struct sysrq_key_op *op);`
55			`int unregister_sysrq_key(int key, struct sysrq_key_op *op);`
56			`struct sysrq_key_op *__sysrq_get_key_op(int key);`
57
58			`#else`
59
60			`static inline int sysrq_on(void)`
61			`{`
62			`return 0;`
63			`}`
64			`static inline int __reterr(void)`
65			`{`
66			`return -EINVAL;`
67			`}`
68			`static inline void handle_sysrq(int key, struct tty_struct *tty)`
69			`{`
70			`}`
71
72			`#define register_sysrq_key(ig,nore) __reterr()`
73			`#define unregister_sysrq_key(ig,nore) __reterr()`
74
75			`#endif`
76
77			`#endif /* _LINUX_SYSRQ_H */`

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[/] [test_project/] [trunk/] [linux_sd_driver/] [include/] [linux/] [sysrq.h] - Blame information for rev 81