1 files changed, 167 insertions, 0 deletions
diff --git a/liblog/include/private/android_logger.h b/liblog/include/private/android_logger.h
new file mode 100644
index 000000000..d3b72bcee
--- /dev/null
+++ b/liblog/include/private/android_logger.h
@@ -0,0 +1,167 @@
+/*
+ * Copyright (C) 2015 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.
+ */
+
+/* This file is used to define the internal protocol for the Android Logger */
+
+#pragma once
+
+/* Android private interfaces */
+
+#include <stdbool.h>
+#include <stdint.h>
+#include <sys/types.h>
+
+#ifdef __cplusplus
+#include <string>
+#endif
+
+#include <log/log.h>
+#include <log/log_event_list.h>
+
+#define LOGGER_MAGIC 'l'
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+/* Header Structure to pstore */
+typedef struct __attribute__((__packed__)) {
+  uint8_t magic;
+  uint16_t len;
+  uint16_t uid;
+  uint16_t pid;
+} android_pmsg_log_header_t;
+
+/* Header Structure to logd, and second header for pstore */
+typedef struct __attribute__((__packed__)) {
+  uint8_t id;
+  uint16_t tid;
+  log_time realtime;
+} android_log_header_t;
+
+/* Event Header Structure to logd */
+typedef struct __attribute__((__packed__)) {
+  int32_t tag;  // Little Endian Order
+} android_event_header_t;
+
+// Event payload EVENT_TYPE_LIST
+typedef struct __attribute__((__packed__)) {
+  int8_t type;  // EVENT_TYPE_LIST
+  int8_t element_count;
+} android_event_list_t;
+
+// Event payload EVENT_TYPE_FLOAT
+typedef struct __attribute__((__packed__)) {
+  int8_t type;  // EVENT_TYPE_FLOAT
+  float data;
+} android_event_float_t;
+
+/* Event payload EVENT_TYPE_INT */
+typedef struct __attribute__((__packed__)) {
+  int8_t type;   // EVENT_TYPE_INT
+  int32_t data;  // Little Endian Order
+} android_event_int_t;
+
+/* Event with single EVENT_TYPE_INT */
+typedef struct __attribute__((__packed__)) {
+  android_event_header_t header;
+  android_event_int_t payload;
+} android_log_event_int_t;
+
+/* Event payload EVENT_TYPE_LONG */
+typedef struct __attribute__((__packed__)) {
+  int8_t type;   // EVENT_TYPE_LONG
+  int64_t data;  // Little Endian Order
+} android_event_long_t;
+
+/* Event with single EVENT_TYPE_LONG */
+typedef struct __attribute__((__packed__)) {
+  android_event_header_t header;
+  android_event_long_t payload;
+} android_log_event_long_t;
+
+/*
+ * Event payload EVENT_TYPE_STRING
+ *
+ * Danger: do not embed this structure into another structure.
+ * This structure uses a flexible array member, and when
+ * compiled using g++, __builtin_object_size(data, 1) returns
+ * a bad value. This is possibly a g++ bug, or a bug due to
+ * the fact that flexible array members are not supported
+ * in C++.
+ * http://stackoverflow.com/questions/4412749/are-flexible-array-members-valid-in-c
+ */
+
+typedef struct __attribute__((__packed__)) {
+  int8_t type;     // EVENT_TYPE_STRING;
+  int32_t length;  // Little Endian Order
+  char data[];
+} android_event_string_t;
+
+/* Event with single EVENT_TYPE_STRING */
+typedef struct __attribute__((__packed__)) {
+  android_event_header_t header;
+  int8_t type;     // EVENT_TYPE_STRING;
+  int32_t length;  // Little Endian Order
+  char data[];
+} android_log_event_string_t;
+
+#define ANDROID_LOG_PMSG_FILE_MAX_SEQUENCE 256 /* 1MB file */
+#define ANDROID_LOG_PMSG_FILE_SEQUENCE 1000
+
+ssize_t __android_log_pmsg_file_write(log_id_t logId, char prio,
+                                      const char* filename, const char* buf,
+                                      size_t len);
+
+#define LOG_ID_ANY ((log_id_t)-1)
+#define ANDROID_LOG_ANY ANDROID_LOG_UNKNOWN
+
+/* first 5 arguments match __android_log_msg_file_write, a cast is safe */
+typedef ssize_t (*__android_log_pmsg_file_read_fn)(log_id_t logId, char prio,
+                                                   const char* filename,
+                                                   const char* buf, size_t len,
+                                                   void* arg);
+
+ssize_t __android_log_pmsg_file_read(log_id_t logId, char prio,
+                                     const char* prefix,
+                                     __android_log_pmsg_file_read_fn fn,
+                                     void* arg);
+
+int __android_log_security_bwrite(int32_t tag, const void* payload, size_t len);
+int __android_log_security_bswrite(int32_t tag, const char* payload);
+int __android_log_security(); /* Device Owner is present */
+
+#define BOOL_DEFAULT_FLAG_TRUE_FALSE 0x1
+#define BOOL_DEFAULT_FALSE 0x0        /* false if property not present   */
+#define BOOL_DEFAULT_TRUE 0x1         /* true if property not present    */
+#define BOOL_DEFAULT_FLAG_PERSIST 0x2 /* <key>, persist.<key>, ro.<key>  */
+#define BOOL_DEFAULT_FLAG_ENG 0x4     /* off for user                    */
+#define BOOL_DEFAULT_FLAG_SVELTE 0x8  /* off for low_ram                 */
+bool __android_logger_property_get_bool(const char* key, int flag);
+
+#define LOG_BUFFER_SIZE (256 * 1024) /* Tuned with ro.logd.size per-platform \
+                                      */
+#define LOG_BUFFER_MIN_SIZE (64 * 1024UL)
+#define LOG_BUFFER_MAX_SIZE (256 * 1024 * 1024UL)
+unsigned long __android_logger_get_buffer_size(log_id_t logId);
+bool __android_logger_valid_buffer_size(unsigned long value);
+
+/* Retrieve the composed event buffer */
+int android_log_write_list_buffer(android_log_context ctx, const char** msg);
+
+#if defined(__cplusplus)
+}
+#endif