1 /*
2  * Copyright (C) 2016 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 #ifndef _ROTATE_LOGS_H
18 #define _ROTATE_LOGS_H
19 
20 #include <stddef.h>
21 #include <sys/types.h>
22 
23 #include <log/log_id.h>
24 
25 static constexpr int KEEP_LOG_COUNT = 10;
26 
27 ssize_t logbasename(log_id_t id, char prio, const char* filename, const char* buf, size_t len,
28                     void* arg);
29 
30 ssize_t logrotate(log_id_t id, char prio, const char* filename, const char* buf, size_t len,
31                   void* arg);
32 
33 // Rename last_log -> last_log.1 -> last_log.2 -> ... -> last_log.$max.
34 // Similarly rename last_kmsg -> last_kmsg.1 -> ... -> last_kmsg.$max.
35 // Overwrite any existing last_log.$max and last_kmsg.$max.
36 void rotate_logs(const char* last_log_file, const char* last_kmsg_file);
37 
38 #endif //_ROTATE_LOG_H
39