1 files changed, 55 insertions, 0 deletions
diff --git a/isam/rrnd.c b/isam/rrnd.c
new file mode 100644
index 00000000000..7fd197a6d58
--- /dev/null
+++ b/isam/rrnd.c
@@ -0,0 +1,55 @@
+/* Copyright (C) 2000 MySQL AB & MySQL Finland AB & TCX DataKonsult AB
+   
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 2 of the License, or
+   (at your option) any later version.
+   
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+   
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA */
+
+/* Read a record with random-access. The position to the record must
+   get by N_INFO. The next record can be read with pos= -1 */
+
+
+#include "isamdef.h"
+
+/*
+	   If filepos == NI_POS_ERROR, read next
+	   Returns:
+	   0 = Ok.
+	   1 = Row was deleted
+	  -1 = EOF (check errno to verify)
+*/
+
+int nisam_rrnd(N_INFO *info, byte *buf, register ulong filepos)
+{
+  int skipp_deleted_blocks;
+  DBUG_ENTER("nisam_rrnd");
+
+  skipp_deleted_blocks=0;
+
+  if (filepos == NI_POS_ERROR)
+  {
+    skipp_deleted_blocks=1;
+    if (info->lastpos == NI_POS_ERROR)	/* First read ? */
+      filepos= info->s->pack.header_length;	/* Read first record */
+    else
+      filepos= info->nextpos;
+  }
+
+  info->lastinx= -1;				/* Can't forward or backward */
+  /* Init all but update-flag */
+  info->update&= (HA_STATE_CHANGED | HA_STATE_ROW_CHANGED);
+
+  if (info->opt_flag & WRITE_CACHE_USED && flush_io_cache(&info->rec_cache))
+    DBUG_RETURN(my_errno);
+
+  DBUG_RETURN ((*info->s->read_rnd)(info,buf,filepos,skipp_deleted_blocks));
+}