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authorTianjie Xu <xunchang@google.com>2016-11-04 19:24:31 +0100
committerandroid-build-merger <android-build-merger@google.com>2016-11-04 19:24:31 +0100
commita4d0c0ab871368785d599726849a87a599cd4709 (patch)
treeffa7dcd8db96f56bf16cce38c8aa41cc06083844 /rotate_logs.h
parentMerge "updater: Fix a bug in DeleteFn()." am: 529032f4a0 am: 4f91ca78b9 am: 786b083b8e (diff)
parentMerge "Cleanup the duplicates of logs rotation functions" am: e2d05c5658 am: 99adda9d67 (diff)
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diff --git a/rotate_logs.h b/rotate_logs.h
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+/*
+ * Copyright (C) 2016 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.
+ */
+
+#ifndef _ROTATE_LOGS_H
+#define _ROTATE_LOGS_H
+
+#include <string>
+
+#include <private/android_logger.h> /* private pmsg functions */
+
+constexpr int KEEP_LOG_COUNT = 10;
+
+ssize_t logbasename(log_id_t /* logId */,
+ char /* prio */,
+ const char *filename,
+ const char * /* buf */, size_t len,
+ void *arg);
+
+ssize_t logrotate(
+ log_id_t logId,
+ char prio,
+ const char *filename,
+ const char *buf, size_t len,
+ void *arg);
+
+// Rename last_log -> last_log.1 -> last_log.2 -> ... -> last_log.$max.
+// Similarly rename last_kmsg -> last_kmsg.1 -> ... -> last_kmsg.$max.
+// Overwrite any existing last_log.$max and last_kmsg.$max.
+void rotate_logs(const char* last_log_file, const char* last_kmsg_file);
+
+#endif //_ROTATE_LOG_H