arch/um/include/mconsole.h

   1 /*
   2  * Copyright (C) 2001 Lennert Buytenhek (buytenh@gnu.org)
   3  * Copyright (C) 2001, 2002 Jeff Dike (jdike@karaya.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 #define MCONSOLE_MAGIC (0xcafebabe)
  16 #define MCONSOLE_MAX_DATA (512)
  17 #define MCONSOLE_VERSION 2
  18
  19 struct mconsole_request {
  20         u32 magic;
  21         u32 version;
  22         u32 len;
  23         char data[MCONSOLE_MAX_DATA];
  24 };
  25
  26 struct mconsole_reply {
  27         u32 err;
  28         u32 more;
  29         u32 len;
  30         char data[MCONSOLE_MAX_DATA];
  31 };
  32
  33 struct mconsole_notify {
  34         u32 magic;
  35         u32 version;
  36         enum { MCONSOLE_SOCKET, MCONSOLE_PANIC, MCONSOLE_HANG,
  37                MCONSOLE_USER_NOTIFY } type;
  38         u32 len;
  39         char data[MCONSOLE_MAX_DATA];
  40 };
  41
  42 struct mc_request;
  43
  44 enum mc_context { MCONSOLE_INTR, MCONSOLE_PROC };
  45
  46 struct mconsole_command
  47 {
  48         char *command;
  49         void (*handler)(struct mc_request *req);
  50         enum mc_context context;
  51 };
  52
  53 struct mc_request
  54 {
  55         int len;
  56         int as_interrupt;
  57
  58         int originating_fd;
  59         int originlen;
  60         unsigned char origin[128];                      /* sockaddr_un */
  61
  62         struct mconsole_request request;
  63         struct mconsole_command *cmd;
  64 };
  65
  66 extern char mconsole_socket_name[];
  67
  68 extern int mconsole_unlink_socket(void);
  69 extern int mconsole_reply(struct mc_request *req, char *reply, int err,
  70                           int more);
  71
  72 extern void mconsole_version(struct mc_request *req);
  73 extern void mconsole_help(struct mc_request *req);
  74 extern void mconsole_halt(struct mc_request *req);
  75 extern void mconsole_reboot(struct mc_request *req);
  76 extern void mconsole_config(struct mc_request *req);
  77 extern void mconsole_remove(struct mc_request *req);
  78 extern void mconsole_sysrq(struct mc_request *req);
  79 extern void mconsole_cad(struct mc_request *req);
  80 extern void mconsole_stop(struct mc_request *req);
  81 extern void mconsole_go(struct mc_request *req);
  82 extern void mconsole_log(struct mc_request *req);
  83 extern void mconsole_proc(struct mc_request *req);
  84
  85 extern int mconsole_get_request(int fd, struct mc_request *req);
  86 extern int mconsole_notify(char *sock_name, int type, const void *data,
  87                            int len);
  88 extern char *mconsole_notify_socket(void);
  89 extern void lock_notify(void);
  90 extern void unlock_notify(void);
  91
  92 #endif
  93
  94 /*
  95  * Overrides for Emacs so that we follow Linus's tabbing style.
  96  * Emacs will notice this stuff at the end of the file and automatically
  97  * adjust the settings for this buffer only.  This must remain at the end
  98  * of the file.
  99  * ---------------------------------------------------------------------------
 100  * Local variables:
 101  * c-file-style: "linux"
 102  * End:
 103  */