Fixed problem with concurrent inserts and read-previous

Fix for BSDI 4.0


Docs/manual.texi:
  Added MySQL AB information
configure.in:
  Fix for BSDI 4.0
myisam/mi_rprev.c:
  Fixed problem with concurrent inserts and read-previous
mysys/mf_format.c:
  Fix for BSDI 4.0
sql/handler.cc:
  Fixed type

configure.in

@@ -746,7 +746,7 @@ case $SYSTEM_TYPE in
     ;;
   *bsdi*)
     echo "Adding fix for BSDI"
-    CFLAGS="$CFLAGS -D__BSD__"
+    CFLAGS="$CFLAGS -D__BSD__ -DHAVE_BROKEN_REALPATH"
     AC_DEFINE_UNQUOTED(SOCKOPT_OPTLEN_TYPE, size_t)
     ;;
    *sgi-irix6*)

myisam/mi_rprev.c

@@ -54,7 +54,7 @@ int mi_rprev(MI_INFO *info, byte *buf, int inx)
 
   if (!error)
   {
-    while (info->lastpos > info->state->data_file_length)
+    while (info->lastpos >= info->state->data_file_length)
     {
       /* Skip rows that are inserted by other threads since we got a lock */
       if  ((error=_mi_search_next(info,share->keyinfo+inx,info->lastkey,

mysys/mf_format.c

@@ -110,7 +110,7 @@ my_string fn_format(my_string to, const char *name, const char *dsk,
     (void) strmov(pos,ext);			/* Don't convert extension */
   }
   /* Purify gives a lot of UMR errors when using realpath */
-#if defined(HAVE_REALPATH) && !defined(HAVE_purify)
+#if defined(HAVE_REALPATH) && !defined(HAVE_purify) && !defined(HAVE_BROKEN_REALPATH)
   if (flag & 16)
   {
     struct stat stat_buff;

sql/handler.cc

@@ -112,7 +112,7 @@ handler *get_new_handler(TABLE *table, enum db_type db_type)
     return new ha_berkeley(table);
 #endif
 #ifdef HAVE_INNOBASE_DB
-  case DB_TYPE_INNOBASE_DB:
+  case DB_TYPE_INNOBASE:
     return new ha_innobase(table);
 #endif
   case DB_TYPE_HEAP: