* change imdb_usage_map()

src/database.c

@@ -334,14 +334,19 @@ imdb_search(imdb_t        * const db,
 
 uint64_t
 imdb_usage_map(imdb_t * const db,
-               char   * const map) {
+               char  ** const map) {
   const int blk_size = 4096;
   imdb_block_t blk;
+  uint64_t records;
   unsigned char *r; /* mnemonics : block, record */
-  char *m = map;    /* mnemonics : map */
+  char *m = NULL;   /* mnemonics : map */
 
   memset(&blk, 0x0, sizeof(imdb_block_t));
 
+  records = imdb_records_count(db);
+  CALLOC(*map, records + 1, sizeof(char));
+
+  m = *map;
   blk.start = 1;
   blk.records = blk_size;
 
@@ -354,5 +359,5 @@ imdb_usage_map(imdb_t * const db,
   }
   FREE(blk.data);
 
-  return blk.start + blk.records;
+  return records;
 }

src/database.h

@@ -114,5 +114,5 @@ imdb_records_count(imdb_t * const db);
 */
 uint64_t
 imdb_usage_map(imdb_t * const db,
-               char   * const map);
+               char  ** const map);
 #endif

src/util.c

@@ -76,11 +76,8 @@ int db_usage_map(imdb_t *db, unsigned short int cols)
 
   memset(row, 0x0, sizeof(char) * 256);
 
-  records = imdb_records_count(db);
-  CALLOC(map, records + 1, sizeof(char));
-
-  if ((records = imdb_usage_map(db, map)) == 0) {
-    printf("Cant get database usage map\n");
+  if ((records = imdb_usage_map(db, &map)) == 0) {
+    printf("Can't get database usage map\n");
     FREE(map);
     exit(1);
   }