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mconsole.h

/*
 * Copyright (C) 2001 Lennert Buytenhek (buytenh@gnu.org)
 * Copyright (C) 2001 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
 * Licensed under the GPL
 */

#ifndef __MCONSOLE_H__
#define __MCONSOLE_H__

#ifndef __KERNEL__
#include <stdint.h>
#define u32 uint32_t
#endif

#include "sysdep/ptrace.h"

#define MCONSOLE_MAGIC (0xcafebabe)
#define MCONSOLE_MAX_DATA (512)
#define MCONSOLE_VERSION 2

struct mconsole_request {
      u32 magic;
      u32 version;
      u32 len;
      char data[MCONSOLE_MAX_DATA];
};

struct mconsole_reply {
      u32 err;
      u32 more;
      u32 len;
      char data[MCONSOLE_MAX_DATA];
};

struct mconsole_notify {
      u32 magic;
      u32 version;
      enum { MCONSOLE_SOCKET, MCONSOLE_PANIC, MCONSOLE_HANG,
             MCONSOLE_USER_NOTIFY } type;
      u32 len;
      char data[MCONSOLE_MAX_DATA];
};

struct mc_request;

enum mc_context { MCONSOLE_INTR, MCONSOLE_PROC };

struct mconsole_command
{
      char *command;
      void (*handler)(struct mc_request *req);
      enum mc_context context;
};

struct mc_request
{
      int len;
      int as_interrupt;

      int originating_fd;
      unsigned int originlen;
      unsigned char origin[128];                /* sockaddr_un */

      struct mconsole_request request;
      struct mconsole_command *cmd;
      struct uml_pt_regs regs;
};

extern char mconsole_socket_name[];

extern int mconsole_unlink_socket(void);
extern int mconsole_reply_len(struct mc_request *req, const char *reply,
                        int len, int err, int more);
extern int mconsole_reply(struct mc_request *req, const char *str, int err,
                    int more);

extern void mconsole_version(struct mc_request *req);
extern void mconsole_help(struct mc_request *req);
extern void mconsole_halt(struct mc_request *req);
extern void mconsole_reboot(struct mc_request *req);
extern void mconsole_config(struct mc_request *req);
extern void mconsole_remove(struct mc_request *req);
extern void mconsole_sysrq(struct mc_request *req);
extern void mconsole_cad(struct mc_request *req);
extern void mconsole_stop(struct mc_request *req);
extern void mconsole_go(struct mc_request *req);
extern void mconsole_log(struct mc_request *req);
extern void mconsole_proc(struct mc_request *req);
extern void mconsole_stack(struct mc_request *req);

extern int mconsole_get_request(int fd, struct mc_request *req);
extern int mconsole_notify(char *sock_name, int type, const void *data,
                     int len);
extern char *mconsole_notify_socket(void);
extern void lock_notify(void);
extern void unlock_notify(void);

#endif

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