LXR linux/arch/um/drivers/mconsole.h

   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#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