1 files changed, 72 insertions, 0 deletions
diff --git a/liblog/include/log/event_tag_map.h b/liblog/include/log/event_tag_map.h
new file mode 100644
index 000000000..f7ec208b3
--- /dev/null
+++ b/liblog/include/log/event_tag_map.h
@@ -0,0 +1,72 @@
+/*
+ * Copyright (C) 2007 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.
+ */
+
+#pragma once
+
+#include <stddef.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define EVENT_TAG_MAP_FILE "/system/etc/event-log-tags"
+
+struct EventTagMap;
+typedef struct EventTagMap EventTagMap;
+
+/*
+ * Open the specified file as an event log tag map.
+ *
+ * Returns NULL on failure.
+ */
+EventTagMap* android_openEventTagMap(const char* fileName);
+
+/*
+ * Close the map.
+ */
+void android_closeEventTagMap(EventTagMap* map);
+
+/*
+ * Look up a tag by index.  Returns the tag string, or NULL if not found.
+ */
+const char* android_lookupEventTag(const EventTagMap* map, unsigned int tag)
+    __attribute__((
+        deprecated("use android_lookupEventTag_len() instead to minimize "
+                   "MAP_PRIVATE copy-on-write memory impact")));
+
+/*
+ * Look up a tag by index.  Returns the tag string & string length, or NULL if
+ * not found.  Returned string is not guaranteed to be nul terminated.
+ */
+const char* android_lookupEventTag_len(const EventTagMap* map, size_t* len,
+                                       unsigned int tag);
+
+/*
+ * Look up a format by index. Returns the format string & string length,
+ * or NULL if not found. Returned string is not guaranteed to be nul terminated.
+ */
+const char* android_lookupEventFormat_len(const EventTagMap* map, size_t* len,
+                                          unsigned int tag);
+
+/*
+ * Look up tagname, generate one if necessary, and return a tag
+ */
+int android_lookupEventTagNum(EventTagMap* map, const char* tagname,
+                              const char* format, int prio);
+
+#ifdef __cplusplus
+}
+#endif