1 files changed, 65 insertions, 0 deletions
diff --git a/myisam/mi_rsame.c b/myisam/mi_rsame.c
new file mode 100644
index 00000000000..a4092b53c0b
--- /dev/null
+++ b/myisam/mi_rsame.c
@@ -0,0 +1,65 @@
+/* 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 */
+
+#include "myisamdef.h"
+
+	/*
+	** Find current row with read on position or read on key
+	** If inx >= 0 find record using key
+	** Return values:
+	** 0 = Ok.
+	** HA_ERR_KEY_NOT_FOUND = Row is deleted
+	** HA_ERR_END_OF_FILE   = End of file
+	*/
+
+
+int mi_rsame(MI_INFO *info, byte *record, int inx)
+{
+  DBUG_ENTER("mi_rsame");
+
+  if (inx != -1 && ! (((ulonglong) 1 << inx) & info->s->state.key_map))
+  {
+    DBUG_RETURN(my_errno=HA_ERR_WRONG_INDEX);
+  }
+  if (info->lastpos == HA_OFFSET_ERROR || info->update & HA_STATE_DELETED)
+  {
+    DBUG_RETURN(my_errno=HA_ERR_KEY_NOT_FOUND);	/* No current record */
+  }
+  info->update&= (HA_STATE_CHANGED | HA_STATE_ROW_CHANGED);
+
+  /* Read row from data file */
+  if (_mi_readinfo(info,F_RDLCK,1))
+    DBUG_RETURN(my_errno);
+
+  if (inx >= 0)
+  {
+    info->lastinx=inx;
+    info->lastkey_length=_mi_make_key(info,(uint) inx,info->lastkey,record,
+				      info->lastpos);
+    if (info->s->concurrent_insert)
+      rw_rdlock(&info->s->key_root_lock[inx]);
+    VOID(_mi_search(info,info->s->keyinfo+inx,info->lastkey,0,SEARCH_SAME,
+		    info->s->state.key_root[inx]));
+    if (info->s->concurrent_insert)
+      rw_unlock(&info->s->key_root_lock[inx]);
+  }
+
+  if (!(*info->read_record)(info,info->lastpos,record))
+    DBUG_RETURN(0);
+  if (my_errno == HA_ERR_RECORD_DELETED)
+    my_errno=HA_ERR_KEY_NOT_FOUND;
+  DBUG_RETURN(my_errno);
+} /* mi_rsame */