+#define REC_BLOCK_TYPES 2
+#define REC_HEAD_MAGIC "recindex"
+#define REC_VERSION 5
+
+struct records_info {
+ int rw;
+ int compression_method;
+
+ recindex_t recindex;
+
+ char *data_fname[REC_BLOCK_TYPES];
+ BFile data_BFile[REC_BLOCK_TYPES];
+
+ char *tmp_buf;
+ int tmp_size;
+
+ struct record_cache_entry *record_cache;
+ int cache_size;
+ int cache_cur;
+ int cache_max;
+
+ Zebra_mutex mutex;
+
+ struct records_head {
+ char magic[8];
+ char version[4];
+ zint block_size[REC_BLOCK_TYPES];
+ zint block_free[REC_BLOCK_TYPES];
+ zint block_last[REC_BLOCK_TYPES];
+ zint block_used[REC_BLOCK_TYPES];
+ zint block_move[REC_BLOCK_TYPES];
+
+ zint total_bytes;
+ zint index_last;
+ zint index_free;
+ zint no_records;
+
+ } head;
+};
+
+enum recordCacheFlag { recordFlagNop, recordFlagWrite, recordFlagNew,
+ recordFlagDelete };
+
+struct record_cache_entry {
+ Record rec;
+ enum recordCacheFlag flag;
+};
+
+struct record_index_entry {
+ zint next; /* first block of record info / next free entry */
+ int size; /* size of record or 0 if free entry */
+};
+
+Record rec_cp(Record rec);
+