diff --git a/src/sf_binlog_writer.h b/src/sf_binlog_writer.h
index d31c3cc..a83e143 100644
--- a/src/sf_binlog_writer.h
+++ b/src/sf_binlog_writer.h
@@ -175,8 +175,17 @@ int sf_binlog_writer_notify_exit(SFBinlogWriterInfo *writer);
 #define sf_binlog_writer_get_last_version(writer) \
     sf_file_writer_get_last_version(&(writer)->fw)
 
+#define sf_binlog_get_indexes(writer, start_index, last_index) \
+    sf_file_writer_get_indexes(&(writer)->fw, start_index, last_index)
+
+#define sf_binlog_get_start_index(writer) \
+    sf_file_writer_get_start_index(&(writer)->fw)
+
+#define sf_binlog_get_last_index(writer) \
+    sf_file_writer_get_last_index(&(writer)->fw)
+
 #define sf_binlog_get_current_write_index(writer) \
-    sf_file_writer_get_current_index(&(writer)->fw)
+    sf_file_writer_get_current_write_index(&(writer)->fw)
 
 #define sf_binlog_get_current_write_position(writer, position) \
     sf_file_writer_get_current_position(&(writer)->fw, position)
@@ -225,13 +234,15 @@ static inline SFBinlogWriterBuffer *sf_binlog_writer_alloc_versioned_buffer_ex(
         sf_file_writer_get_index_filename(data_path, \
                 subdir_name, filename, size)
 
-#define sf_binlog_writer_get_binlog_index(data_path, \
-        subdir_name, write_index) \
-        sf_file_writer_get_binlog_index(data_path, \
-                subdir_name, write_index)
+#define sf_binlog_writer_get_binlog_start_index(data_path, \
+        subdir_name, start_index) \
+        sf_file_writer_get_binlog_start_index(data_path, \
+                subdir_name, start_index)
 
-#define sf_binlog_writer_set_binlog_index(writer, binlog_index) \
-    sf_file_writer_set_binlog_last_index(&(writer)->fw, binlog_index)
+#define sf_binlog_writer_get_binlog_last_index(data_path, \
+        subdir_name, last_index) \
+        sf_file_writer_get_binlog_last_index(data_path, \
+                subdir_name, last_index)
 
 #define sf_binlog_writer_set_binlog_start_index(writer, start_index) \
     sf_file_writer_set_binlog_start_index(&(writer)->fw, start_index)
diff --git a/src/sf_file_writer.c b/src/sf_file_writer.c
index 1a25f20..1723edd 100644
--- a/src/sf_file_writer.c
+++ b/src/sf_file_writer.c
@@ -271,17 +271,26 @@ int sf_file_writer_flush(SFFileWriterInfo *writer)
     return result;
 }
 
-int sf_file_writer_get_current_index(SFFileWriterInfo *writer)
+int sf_file_writer_get_indexes(SFFileWriterInfo *writer,
+        int *start_index, int *last_index)
 {
+    int result;
+
     if (writer == NULL) {   //for data recovery
+        *start_index = *last_index = 0;
         return 0;
     }
 
     if (writer->binlog.last_index < 0) {
-        get_binlog_index_from_file(writer);
+        if ((result=get_binlog_index_from_file(writer)) != 0) {
+            *start_index = *last_index = -1;
+            return result;
+        }
     }
 
-    return writer->binlog.last_index;
+    *start_index = writer->binlog.start_index;
+    *last_index = writer->binlog.last_index;
+    return 0;
 }
 
 int sf_file_writer_deal_versioned_buffer(SFFileWriterInfo *writer,
diff --git a/src/sf_file_writer.h b/src/sf_file_writer.h
index 498ee31..fd48fc3 100644
--- a/src/sf_file_writer.h
+++ b/src/sf_file_writer.h
@@ -100,15 +100,47 @@ static inline int64_t sf_file_writer_get_last_version(
 int sf_file_writer_get_binlog_indexes(const char *data_path,
         const char *subdir_name, int *start_index, int *last_index);
 
-static inline int sf_file_writer_get_binlog_index(const char *data_path,
-        const char *subdir_name, int *last_index)
+static inline int sf_file_writer_get_binlog_start_index(
+        const char *data_path, const char *subdir_name,
+        int *start_index)
+{
+    int last_index;
+    return sf_file_writer_get_binlog_indexes(data_path,
+            subdir_name, start_index, &last_index);
+}
+
+static inline int sf_file_writer_get_binlog_last_index(
+        const char *data_path, const char *subdir_name,
+        int *last_index)
 {
     int start_index;
     return sf_file_writer_get_binlog_indexes(data_path,
             subdir_name, &start_index, last_index);
 }
 
-int sf_file_writer_get_current_index(SFFileWriterInfo *writer);
+int sf_file_writer_get_indexes(SFFileWriterInfo *writer,
+        int *start_index, int *last_index);
+
+static inline int sf_file_writer_get_start_index(SFFileWriterInfo *writer)
+{
+    int start_index;
+    int last_index;
+
+    sf_file_writer_get_indexes(writer, &start_index, &last_index);
+    return start_index;
+}
+
+static inline int sf_file_writer_get_last_index(SFFileWriterInfo *writer)
+{
+    int start_index;
+    int last_index;
+
+    sf_file_writer_get_indexes(writer, &start_index, &last_index);
+    return last_index;
+}
+
+#define sf_file_writer_get_current_write_index(writer) \
+    sf_file_writer_get_last_index(writer)
 
 static inline void sf_file_writer_get_current_position(
         SFFileWriterInfo *writer, SFBinlogFilePosition *position)