+static void r_close (struct rset_control *ct)
+{
+ struct rset_temp_private *info = ct->buf;
+
+ r_flush (ct, 0);
+ if (info->fname)
+ {
+ assert (info->fd != -1);
+ close (info->fd);
+ info->fd = -1;
+ }
+}
+
+static void r_delete (struct rset_control *ct)
+{
+ struct rset_temp_private *info = ct->buf;
+
+ r_close (ct);
+ if (info->fname)
+ unlink (info->fname);
+ free (info->buf_mem);
+ free (info->fname);
+ free (info);
+}
+
+static void r_reread (struct rset_control *ct)
+{
+ struct rset_temp_private *info = ct->buf;
+
+ if (info->fname)
+ {
+ size_t r, count;
+
+ info->pos_border = info->pos_cur + info->buf_size;
+ if (info->pos_border > info->pos_end)
+ info->pos_border = info->pos_end;
+ count = info->pos_border - info->pos_buf;
+ if (count > 0)
+ if ((r = read (info->fd, info->buf_mem, count)) < count)
+ {
+ if (r == -1)
+ logf (LOG_FATAL|LOG_ERRNO, "read %s", info->fname);
+ else
+ logf (LOG_FATAL, "read of %ld but got %ld",
+ (long) count, (long) r);
+ exit (1);
+ }
+ }
+ else
+ info->pos_border = info->pos_end;
+}
+
+static void r_rewind (struct rset_control *ct)
+{
+ struct rset_temp_private *info = ct->buf;
+
+ r_flush (ct, 0);
+ info->pos_cur = 0;
+ info->pos_buf = 0;
+ r_reread (ct);
+}
+
+static int r_count (struct rset_control *ct)
+{
+ struct rset_temp_private *info = ct->buf;
+
+ return info->pos_end / info->key_size;
+}
+
+static int r_read (rset_control *ct, void *buf)
+{
+ struct rset_temp_private *info = ct->buf;
+ size_t nc = info->pos_cur + info->key_size;
+
+ if (nc > info->pos_border)
+ {
+ if (nc > info->pos_end)
+ return 0;
+ r_flush (ct, 0);
+ info->pos_buf = info->pos_cur;
+ r_reread (ct);
+ }
+ memcpy (buf, info->buf_mem + (info->pos_cur - info->pos_buf),
+ info->key_size);
+ info->pos_cur = nc;
+ return 1;
+}
+
+static int r_write (rset_control *ct, const void *buf)
+{
+ struct rset_temp_private *info = ct->buf;
+ size_t nc = info->pos_cur + info->key_size;