ubusmsg.h

   1 /*
   2  * Copyright (C) 2011 Felix Fietkau <nbd@openwrt.org>
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU Lesser General Public License version 2.1
   6  * as published by the Free Software Foundation
   7  *
   8  * This program is distributed in the hope that it will be useful,
   9  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11  * GNU General Public License for more details.
  12  */
  13
  14 #ifndef __UBUSMSG_H
  15 #define __UBUSMSG_H
  16
  17 #include <stdint.h>
  18 #include <libubox/blob.h>
  19
  20 #define __packetdata __attribute__((packed)) __attribute__((__aligned__(4)))
  21
  22 #define UBUS_MAX_MSGLEN 65536
  23
  24 #define UBUS_SYSTEM_OBJECT_EVENT        1
  25 #define UBUS_SYSTEM_OBJECT_MAX          1024
  26
  27 struct ubus_msghdr {
  28         uint8_t version;
  29         uint8_t type;
  30         uint16_t seq;
  31         uint32_t peer;
  32         struct blob_attr data[];
  33 } __packetdata;
  34
  35 enum ubus_msg_type {
  36         /* initial server message */
  37         UBUS_MSG_HELLO,
  38
  39         /* generic command response */
  40         UBUS_MSG_STATUS,
  41
  42         /* data message response */
  43         UBUS_MSG_DATA,
  44
  45         /* ping request */
  46         UBUS_MSG_PING,
  47
  48         /* look up one or more objects */
  49         UBUS_MSG_LOOKUP,
  50
  51         /* invoke a method on a single object */
  52         UBUS_MSG_INVOKE,
  53
  54         UBUS_MSG_ADD_OBJECT,
  55         UBUS_MSG_REMOVE_OBJECT,
  56
  57         /*
  58          * subscribe/unsubscribe to object notifications
  59          * The unsubscribe message is sent from ubusd when
  60          * the object disappears
  61          */
  62         UBUS_MSG_SUBSCRIBE,
  63         UBUS_MSG_UNSUBSCRIBE,
  64
  65         /* must be last */
  66         __UBUS_MSG_LAST,
  67 };
  68
  69 enum ubus_msg_attr {
  70         UBUS_ATTR_UNSPEC,
  71
  72         UBUS_ATTR_STATUS,
  73
  74         UBUS_ATTR_OBJPATH,
  75         UBUS_ATTR_OBJID,
  76         UBUS_ATTR_METHOD,
  77
  78         UBUS_ATTR_OBJTYPE,
  79         UBUS_ATTR_SIGNATURE,
  80
  81         UBUS_ATTR_DATA,
  82         UBUS_ATTR_TARGET,
  83
  84         /* must be last */
  85         UBUS_ATTR_MAX,
  86 };
  87
  88 enum ubus_msg_status {
  89         UBUS_STATUS_OK,
  90         UBUS_STATUS_INVALID_COMMAND,
  91         UBUS_STATUS_INVALID_ARGUMENT,
  92         UBUS_STATUS_METHOD_NOT_FOUND,
  93         UBUS_STATUS_NOT_FOUND,
  94         UBUS_STATUS_NO_DATA,
  95         UBUS_STATUS_PERMISSION_DENIED,
  96         UBUS_STATUS_TIMEOUT,
  97         UBUS_STATUS_NOT_SUPPORTED,
  98         UBUS_STATUS_UNKNOWN_ERROR,
  99         UBUS_STATUS_CONNECTION_FAILED,
 100         __UBUS_STATUS_LAST
 101 };
 102
 103 #endif