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/*
* Copyright (C) 2015 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/* This file is used to define the internal protocol for the Android Logger */
#ifndef _SYSTEM_CORE_INCLUDE_PRIVATE_ANDROID_LOGGER_H_
#define _SYSTEM_CORE_INCLUDE_PRIVATE_ANDROID_LOGGER_H_
#include <stdint.h>
#include <log/log.h>
#include <log/log_read.h>
#define LOGGER_MAGIC 'l'
/* Header Structure to pstore */
typedef struct __attribute__((__packed__)) {
uint8_t magic;
uint16_t len;
uint16_t uid;
uint16_t pid;
} android_pmsg_log_header_t;
/* Header Structure to logd, and second header for pstore */
typedef struct __attribute__((__packed__)) {
typeof_log_id_t id;
uint16_t tid;
log_time realtime;
} android_log_header_t;
/* Event Header Structure to logd */
typedef struct __attribute__((__packed__)) {
int32_t tag; // Little Endian Order
} android_event_header_t;
/* Event payload EVENT_TYPE_INT */
typedef struct __attribute__((__packed__)) {
int8_t type; // EVENT_TYPE_INT
int32_t data; // Little Endian Order
} android_event_int_t;
/* Event with single EVENT_TYPE_INT */
typedef struct __attribute__((__packed__)) {
android_event_header_t header;
android_event_int_t payload;
} android_log_event_int_t;
/* Event payload EVENT_TYPE_LONG */
typedef struct __attribute__((__packed__)) {
int8_t type; // EVENT_TYPE_LONG
int64_t data; // Little Endian Order
} android_event_long_t;
/* Event with single EVENT_TYPE_LONG */
typedef struct __attribute__((__packed__)) {
android_event_header_t header;
android_event_long_t payload;
} android_log_event_long_t;
/*
* Event payload EVENT_TYPE_STRING
*
* Danger: do not embed this structure into another structure.
* This structure uses a flexible array member, and when
* compiled using g++, __builtin_object_size(data, 1) returns
* a bad value. This is possibly a g++ bug, or a bug due to
* the fact that flexible array members are not supported
* in C++.
* http://stackoverflow.com/questions/4412749/are-flexible-array-members-valid-in-c
*/
typedef struct __attribute__((__packed__)) {
int8_t type; // EVENT_TYPE_STRING;
int32_t length; // Little Endian Order
char data[];
} android_event_string_t;
/* Event with single EVENT_TYPE_STRING */
typedef struct __attribute__((__packed__)) {
android_event_header_t header;
int8_t type; // EVENT_TYPE_STRING;
int32_t length; // Little Endian Order
char data[];
} android_log_event_string_t;
#endif
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