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 #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