feat: compatibility with tarantool-module

- add box_tuple_data_offset function
  (return offset of the msgpack encoded data from the beginning of the tuple)
- add more export functions

NO_DOC=build
NO_TEST=build

changelogs/2.10.0-picodata.md

+Date: 2022-06-10
+Tag: 2.10.0-picodata
+
+## Overview
+
+2.10.0-picodata is a fork of tarantool 2.10.0 version by picodata.io.
+This fork is used to ensure the compatibility of latest tarantool versions and the [rust module](https://github.com/picodata/tarantool-module).
+
+## Functionality added or changed
+
+### Core

changelogs/unreleased/fork-1-compatibility.md

+## feature/build
+
+* add box_tuple_data_offset function (return offset of the messagePack encoded data from the begin of the tuple)
+* export functions/simbols. Exported:
+    * port_destroy
+    * cord_slab_cache
+    * obuf_create
+    * obuf_destroy
+    * sql_prepare
+    * sql_stmt_finalize
+    * sql_unprepare
+    * sql_stmt_query_str
+    * sql_stmt_calculate_id
+    * sql_bind_list_decode
+    * decNumberToString
+    * decimal_precision
+    * decimal_scale
+    * decimal_zero
+    * decimal_is_int
+    * strtodec
+    * decimal_from_double
+    * decimal_from_int64
+    * decimal_from_uint64
+    * decimal_to_int64
+    * decimal_to_uint64
+    * decimal_compare
+    * decimal_round
+    * decimal_floor
+    * decimal_trim
+    * decimal_rescale
+    * decimal_remainder
+    * decimal_abs
+    * decimal_minus
+    * decimal_add
+    * decimal_sub
+    * decimal_mul
+    * decimal_div
+    * decimal_log10
+    * decimal_ln
+    * decimal_pow
+    * decimal_exp
+    * decimal_sqrt
+    * decimal_len
+    * decimal_pack
+    * CTID_DECIMAL
+    * tuple_field_raw_by_full_path
+    * box_tuple_data_offset
+    * ipc_value_delete
+    * TIMEOUT_INFINITY
+    * ipc_value_new
+    * fiber_channel_delete
+    * fiber_channel_close
+    * fiber_channel_put_msg_timeout
+    * fiber_channel_get_msg_timeout
+    * fiber_channel_has_readers
+    * fiber_channel_has_writers
+    * fiber_channel_new

extra/exports

@@ -565,3 +565,61 @@ uuid_nil
 uuid_unpack
 _say
 _say_strerror
+
+# picodata sql
+port_destroy
+cord_slab_cache
+obuf_create
+obuf_destroy
+sql_prepare
+sql_stmt_finalize
+sql_unprepare
+sql_stmt_query_str
+sql_stmt_calculate_id
+sql_bind_list_decode
+# picodata decimal
+decNumberToString
+decimal_precision
+decimal_scale
+decimal_zero
+decimal_is_int
+strtodec
+decimal_from_double
+decimal_from_int64
+decimal_from_uint64
+decimal_to_int64
+decimal_to_uint64
+decimal_compare
+decimal_round
+decimal_floor
+decimal_trim
+decimal_rescale
+decimal_remainder
+decimal_abs
+decimal_minus
+decimal_add
+decimal_sub
+decimal_mul
+decimal_div
+decimal_log10
+decimal_ln
+decimal_pow
+decimal_exp
+decimal_sqrt
+decimal_len
+decimal_pack
+CTID_DECIMAL
+# picodata tuple
+tuple_field_raw_by_full_path
+box_tuple_data_offset
+# picodata fiber
+ipc_value_delete
+TIMEOUT_INFINITY
+ipc_value_new
+fiber_channel_delete
+fiber_channel_close
+fiber_channel_put_msg_timeout
+fiber_channel_get_msg_timeout
+fiber_channel_has_readers
+fiber_channel_has_writers
+fiber_channel_new

src/box/tuple.c

@@ -634,6 +634,13 @@ box_tuple_bsize(box_tuple_t *tuple)
 	return tuple_bsize(tuple);
 }
 
+uint16_t
+box_tuple_data_offset(box_tuple_t *tuple)
+{
+	assert(tuple != NULL);
+	return tuple_data_offset(tuple);
+}
+
 ssize_t
 tuple_to_buf(struct tuple *tuple, char *buf, size_t size)
 {

src/box/tuple.h

@@ -148,6 +148,13 @@ box_tuple_field_count(box_tuple_t *tuple);
 size_t
 box_tuple_bsize(box_tuple_t *tuple);
 
+/**
+ * Return the number of bytes to the MessagePack from the begin of the tuple.
+ * \param tuple a tuple
+ */
+uint16_t
+box_tuple_data_offset(box_tuple_t *tuple);
+
 /**
  * Dump raw MsgPack data to the memory buffer \a buf of size \a size.
  *