1 /* 2 * Copyright (C) 2007 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #pragma once 18 19 #include <stddef.h> 20 21 #ifdef __cplusplus 22 extern "C" { 23 #endif 24 25 #define EVENT_TAG_MAP_FILE "/system/etc/event-log-tags" 26 27 struct EventTagMap; 28 typedef struct EventTagMap EventTagMap; 29 30 /* 31 * Open the specified file as an event log tag map. 32 * 33 * Returns NULL on failure. 34 */ 35 EventTagMap* android_openEventTagMap(const char* fileName); 36 37 /* 38 * Close the map. 39 */ 40 void android_closeEventTagMap(EventTagMap* map); 41 42 /* 43 * Look up a tag by index. Returns the tag string & string length, or NULL if 44 * not found. Returned string is not guaranteed to be nul terminated. 45 */ 46 const char* android_lookupEventTag_len(const EventTagMap* map, size_t* len, 47 unsigned int tag); 48 49 /* 50 * Look up a format by index. Returns the format string & string length, 51 * or NULL if not found. Returned string is not guaranteed to be nul terminated. 52 */ 53 const char* android_lookupEventFormat_len(const EventTagMap* map, size_t* len, 54 unsigned int tag); 55 56 #ifdef __cplusplus 57 } 58 #endif 59