1/* SPDX-License-Identifier: GPL-2.0 */
2/*
3 * Copyright (C) 2001 Lennert Buytenhek (buytenh@gnu.org)
4 * Copyright (C) 2001 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
5 */
6
7#ifndef __MCONSOLE_H__
8#define __MCONSOLE_H__
9
10#ifdef __UM_HOST__
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
21struct mconsole_request {
22	u32 magic;
23	u32 version;
24	u32 len;
25	char data[MCONSOLE_MAX_DATA];
26};
27
28struct mconsole_reply {
29	u32 err;
30	u32 more;
31	u32 len;
32	char data[MCONSOLE_MAX_DATA];
33};
34
35struct 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
44struct mc_request;
45
46enum mc_context { MCONSOLE_INTR, MCONSOLE_PROC };
47
48struct mconsole_command
49{
50	char *command;
51	void (*handler)(struct mc_request *req);
52	enum mc_context context;
53};
54
55struct 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
69extern char mconsole_socket_name[];
70
71extern int mconsole_unlink_socket(void);
72extern int mconsole_reply_len(struct mc_request *req, const char *reply,
73			      int len, int err, int more);
74extern int mconsole_reply(struct mc_request *req, const char *str, int err,
75			  int more);
76
77extern void mconsole_version(struct mc_request *req);
78extern void mconsole_help(struct mc_request *req);
79extern void mconsole_halt(struct mc_request *req);
80extern void mconsole_reboot(struct mc_request *req);
81extern void mconsole_config(struct mc_request *req);
82extern void mconsole_remove(struct mc_request *req);
83extern void mconsole_sysrq(struct mc_request *req);
84extern void mconsole_cad(struct mc_request *req);
85extern void mconsole_stop(struct mc_request *req);
86extern void mconsole_go(struct mc_request *req);
87extern void mconsole_log(struct mc_request *req);
88extern void mconsole_proc(struct mc_request *req);
89extern void mconsole_stack(struct mc_request *req);
90
91extern int mconsole_get_request(int fd, struct mc_request *req);
92extern int mconsole_notify(char *sock_name, int type, const void *data,
93			   int len);
94extern char *mconsole_notify_socket(void);
95extern void lock_notify(void);
96extern void unlock_notify(void);
97
98#endif
99