Linux Kernel  3.7.1
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mconsole.h
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1 /*
2  * Copyright (C) 2001 Lennert Buytenhek (buytenh@gnu.org)
3  * Copyright (C) 2001 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
4  * Licensed under the GPL
5  */
6 
7 #ifndef __MCONSOLE_H__
8 #define __MCONSOLE_H__
9 
10 #ifndef __KERNEL__
11 #include <stdint.h>
12 #define u32 uint32_t
13 #endif
14 
15 #include <sysdep/ptrace.h>
16 
17 #define MCONSOLE_MAGIC (0xcafebabe)
18 #define MCONSOLE_MAX_DATA (512)
19 #define MCONSOLE_VERSION 2
20 
21 struct mconsole_request {
22  u32 magic;
23  u32 version;
24  u32 len;
25  char data[MCONSOLE_MAX_DATA];
26 };
27 
28 struct mconsole_reply {
29  u32 err;
30  u32 more;
31  u32 len;
32  char data[MCONSOLE_MAX_DATA];
33 };
34 
35 struct mconsole_notify {
36  u32 magic;
37  u32 version;
38  enum { MCONSOLE_SOCKET, MCONSOLE_PANIC, MCONSOLE_HANG,
39  MCONSOLE_USER_NOTIFY } type;
40  u32 len;
41  char data[MCONSOLE_MAX_DATA];
42 };
43 
44 struct mc_request;
45 
46 enum mc_context { MCONSOLE_INTR, MCONSOLE_PROC };
47 
48 struct mconsole_command
49 {
50  char *command;
51  void (*handler)(struct mc_request *req);
52  enum mc_context context;
53 };
54 
55 struct mc_request
56 {
57  int len;
58  int as_interrupt;
59 
60  int originating_fd;
61  unsigned int originlen;
62  unsigned char origin[128]; /* sockaddr_un */
63 
64  struct mconsole_request request;
65  struct mconsole_command *cmd;
66  struct uml_pt_regs regs;
67 };
68 
69 extern char mconsole_socket_name[];
70 
71 extern int mconsole_unlink_socket(void);
72 extern int mconsole_reply_len(struct mc_request *req, const char *reply,
73  int len, int err, int more);
74 extern int mconsole_reply(struct mc_request *req, const char *str, int err,
75  int more);
76 
77 extern void mconsole_version(struct mc_request *req);
78 extern void mconsole_help(struct mc_request *req);
79 extern void mconsole_halt(struct mc_request *req);
80 extern void mconsole_reboot(struct mc_request *req);
81 extern void mconsole_config(struct mc_request *req);
82 extern void mconsole_remove(struct mc_request *req);
83 extern void mconsole_sysrq(struct mc_request *req);
84 extern void mconsole_cad(struct mc_request *req);
85 extern void mconsole_stop(struct mc_request *req);
86 extern void mconsole_go(struct mc_request *req);
87 extern void mconsole_log(struct mc_request *req);
88 extern void mconsole_proc(struct mc_request *req);
89 extern void mconsole_stack(struct mc_request *req);
90 
91 extern int mconsole_get_request(int fd, struct mc_request *req);
92 extern int mconsole_notify(char *sock_name, int type, const void *data,
93  int len);
94 extern char *mconsole_notify_socket(void);
95 extern void lock_notify(void);
96 extern void unlock_notify(void);
97 
98 #endif
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