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diff --git a/lib/qiovec.h b/lib/qiovec.h
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+/* Flexible iovec  -- header
+ * Copyright (C) 2010 Chris Hall (GMCH), Highwayman
+ *
+ * This file is part of GNU Zebra.
+ *
+ * GNU Zebra 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, or (at your
+ * option) any later version.
+ *
+ * GNU Zebra 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 GNU Zebra; see the file COPYING.  If not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+#ifndef _ZEBRA_QIOVEC_H
+#define _ZEBRA_QIOVEC_H
+
+#include "zebra.h"
+
+#include <stddef.h>
+#include <stdint.h>
+#include <stdbool.h>
+
+#ifndef Inline
+#define Inline static inline
+#endif
+
+/*==============================================================================
+ * Flexible size "struct iovec"
+ *
+ * NB: a completely zero structure is a valid, empty qiovec.
+ */
+typedef struct qiovec* qiovec ;
+typedef struct qiovec  qiovec_t ;
+struct qiovec
+{
+  struct iovec* vec ;           /* the actual iovec array       */
+
+  bool          writing ;       /* started, but not finished    */
+
+  unsigned      i_get ;         /* next entry to get            */
+  unsigned      i_put ;         /* next entry to put            */
+
+  unsigned      i_alloc ;       /* number of entries allocated  */
+} ;
+
+/*==============================================================================
+ * Functions
+ */
+
+extern qiovec qiovec_init_new(qiovec qiov) ;
+extern qiovec qiovec_reset(qiovec qiov, bool free_structure) ;
+
+#define qiovec_reset_keep(qiov) qiovec_reset(qiov, 0)
+#define qiovec_reset_free(qiov) qiovec_reset(qiov, 1)
+
+Inline bool qiovec_empty(qiovec qiov) ;
+extern void qiovec_clear(qiovec qiov) ;
+extern void qiovec_push(qiovec qiov, const void* base, size_t len) ;
+extern int qiovec_write_nb(int fd, qiovec qiov) ;
+
+extern int iovec_write_nb(int fd, struct iovec* p_iov, int n) ;
+Inline void iovec_set(struct iovec* p_iov, const void* base, size_t len) ;
+
+/*------------------------------------------------------------------------------
+ * Is given qiov empty ?
+ *
+ * NB: arranges to never add zero length entries to the iovec vector, so
+ *     is empty when there are no active entries.
+ */
+Inline bool
+qiovec_empty(qiovec qiov)
+{
+  return (qiov->i_get == qiov->i_put) ;
+} ;
+
+/*------------------------------------------------------------------------------
+ * Set a given struct iovec
+ *
+ * Gets around the fact that the standard structure does not have a const
+ * pointer !
+ */
+#include "miyagi.h"
+
+Inline void
+iovec_set(struct iovec* p_iov, const void* base, size_t len)
+{
+  p_iov->iov_base = miyagi(base) ;
+  p_iov->iov_len  = len ;
+} ;
+
+#endif /* _ZEBRA_QIOVEC_H */