133 lines
3.9 KiB
C
133 lines
3.9 KiB
C
/*
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* Copyright (C) 2015 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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/* This file is used to define the internal protocol for the Android Logger */
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#ifndef _SYSTEM_CORE_INCLUDE_PRIVATE_ANDROID_LOGGER_H_
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#define _SYSTEM_CORE_INCLUDE_PRIVATE_ANDROID_LOGGER_H_
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/* Android private interfaces */
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#include <stdint.h>
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#include <sys/types.h>
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#include <log/log.h>
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#include <log/log_read.h>
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#define LOGGER_MAGIC 'l'
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/* Header Structure to pstore */
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typedef struct __attribute__((__packed__)) {
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uint8_t magic;
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uint16_t len;
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uint16_t uid;
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uint16_t pid;
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} android_pmsg_log_header_t;
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/* Header Structure to logd, and second header for pstore */
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typedef struct __attribute__((__packed__)) {
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typeof_log_id_t id;
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uint16_t tid;
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log_time realtime;
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} android_log_header_t;
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/* Event Header Structure to logd */
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typedef struct __attribute__((__packed__)) {
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int32_t tag; // Little Endian Order
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} android_event_header_t;
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/* Event payload EVENT_TYPE_INT */
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typedef struct __attribute__((__packed__)) {
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int8_t type; // EVENT_TYPE_INT
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int32_t data; // Little Endian Order
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} android_event_int_t;
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/* Event with single EVENT_TYPE_INT */
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typedef struct __attribute__((__packed__)) {
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android_event_header_t header;
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android_event_int_t payload;
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} android_log_event_int_t;
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/* Event payload EVENT_TYPE_LONG */
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typedef struct __attribute__((__packed__)) {
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int8_t type; // EVENT_TYPE_LONG
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int64_t data; // Little Endian Order
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} android_event_long_t;
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/* Event with single EVENT_TYPE_LONG */
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typedef struct __attribute__((__packed__)) {
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android_event_header_t header;
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android_event_long_t payload;
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} android_log_event_long_t;
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/*
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* Event payload EVENT_TYPE_STRING
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*
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* Danger: do not embed this structure into another structure.
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* This structure uses a flexible array member, and when
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* compiled using g++, __builtin_object_size(data, 1) returns
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* a bad value. This is possibly a g++ bug, or a bug due to
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* the fact that flexible array members are not supported
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* in C++.
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* http://stackoverflow.com/questions/4412749/are-flexible-array-members-valid-in-c
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*/
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typedef struct __attribute__((__packed__)) {
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int8_t type; // EVENT_TYPE_STRING;
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int32_t length; // Little Endian Order
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char data[];
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} android_event_string_t;
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/* Event with single EVENT_TYPE_STRING */
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typedef struct __attribute__((__packed__)) {
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android_event_header_t header;
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int8_t type; // EVENT_TYPE_STRING;
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int32_t length; // Little Endian Order
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char data[];
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} android_log_event_string_t;
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#if defined(__cplusplus)
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extern "C" {
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#endif
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#define ANDROID_LOG_PMSG_FILE_MAX_SEQUENCE 256 /* 1MB file */
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#define ANDROID_LOG_PMSG_FILE_SEQUENCE 1000
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ssize_t __android_log_pmsg_file_write(
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log_id_t logId,
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char prio,
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const char *filename,
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const char *buf, size_t len);
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#define LOG_ID_ANY ((log_id_t)-1)
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#define ANDROID_LOG_ANY ANDROID_LOG_UNKNOWN
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/* first 5 arguments match __android_log_msg_file_write, a cast is safe */
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typedef ssize_t (*__android_log_pmsg_file_read_fn)(
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log_id_t logId,
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char prio,
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const char *filename,
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const char *buf, size_t len, void *arg);
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ssize_t __android_log_pmsg_file_read(
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log_id_t logId, char prio, const char *prefix,
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__android_log_pmsg_file_read_fn fn, void *arg);
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#if defined(__cplusplus)
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}
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#endif
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#endif /* _SYSTEM_CORE_INCLUDE_PRIVATE_ANDROID_LOGGER_H_ */
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