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 <string>
21 
22 #include <private/android_logger.h> /* private pmsg functions */
23 
24 constexpr int KEEP_LOG_COUNT = 10;
25 
26 ssize_t logbasename(log_id_t /* logId */,
27         char /* prio */,
28         const char *filename,
29         const char * /* buf */, size_t len,
30         void *arg);
31 
32 ssize_t logrotate(
33         log_id_t logId,
34         char prio,
35         const char *filename,
36         const char *buf, size_t len,
37         void *arg);
38 
39 // Rename last_log -> last_log.1 -> last_log.2 -> ... -> last_log.$max.
40 // Similarly rename last_kmsg -> last_kmsg.1 -> ... -> last_kmsg.$max.
41 // Overwrite any existing last_log.$max and last_kmsg.$max.
42 void rotate_logs(const char* last_log_file, const char* last_kmsg_file);
43 
44 #endif //_ROTATE_LOG_H
45