package/libtirpc: fix musl build

The fix includes:
  1) Defining rpcent for non-Glibc's
  2) Using a local queue implementation

1) Defining rpcent for non-Glibc's
musl does not define rpcent. Since musl does not provide a __MUSL__ macro we
add a check for non-Glibc's to the existing uClibc patch.

2) Using a local queue implementation
musl does not provide sys/queue.h. We borrow a compatible queue implementation
from the NetBSD project.

Fixes:
http://autobuild.buildroot.net/results/f93/f93f0be26b5a25b953ea7f909037c1f45a83f686/
http://autobuild.buildroot.net/results/c53/c537a76d17012821ed5a6f4170f759efd4d269b0/
http://autobuild.buildroot.net/results/e3c/e3c5be7dca753f7494e8680894f516a8cdc89843/
http://autobuild.buildroot.net/results/2bb/2bb2e314f23b5ba48bb6e0c4fc7e52032fa5d76b/

and many more.

Signed-off-by: Jörg Krause <joerg.krause@embedded.rocks>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

3 files changed, 908 insertions, 3 deletions

diff --git a/package/libtirpc/0001-Disable-parts-of-TIRPC-requiring-NIS-support.patch b/package/libtirpc/0001-Disable-parts-of-TIRPC-requiring-NIS-support.patch
index 12771f3245..71d4420869 100644
--- a/package/libtirpc/0001-Disable-parts-of-TIRPC-requiring-NIS-support.patch
+++ b/package/libtirpc/0001-Disable-parts-of-TIRPC-requiring-NIS-support.patch
@@ -1,4 +1,4 @@
-From fc53290b7f2be918856883cd174cf18f06a085cf Mon Sep 17 00:00:00 2001
+From 583ad557faf86c5532e16dafff19bfdcc349752d Mon Sep 17 00:00:00 2001
 From: =?UTF-8?q?J=C3=B6rg=20Krause?= <joerg.krause@embedded.rocks>
 Date: Mon, 20 Jul 2015 20:30:11 +0200
 Subject: [PATCH 1/1] Disable parts of TIRPC requiring NIS support
diff --git a/package/libtirpc/0002-uClibc-without-RPC-support-does-not-install-rpcent.h.patch b/package/libtirpc/0002-uClibc-without-RPC-support-and-musl-does-not-install-rpcent.h.patch
index 44b5f99926..643a57ed5a 100644
--- a/package/libtirpc/0002-uClibc-without-RPC-support-does-not-install-rpcent.h.patch
+++ b/package/libtirpc/0002-uClibc-without-RPC-support-and-musl-does-not-install-rpcent.h.patch
@@ -1,11 +1,13 @@
 From 7aa1fe6a0f9280571117c30c03c2cc521cd86ec3 Mon Sep 17 00:00:00 2001
 From: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
 Date: Sat, 23 Jun 2012 21:58:07 +0200
-Subject: [PATCH] uClibc without RPC support does not install rpcent.h
+Subject: [PATCH] uClibc without RPC support and musl does not install rpcent.h
 
 Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
 [yann.morin.1998@free.fr: update for 0.3.1]
 Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
+[joerg.krause@embedded.rocks: musl fix]
+Signed-off-by: Jörg Krause <joerg.krause@embedded.rocks>
 ---
  tirpc/rpc/rpcent.h | 5 +++--
  1 file changed, 3 insertions(+), 2 deletions(-)
@@ -22,7 +24,7 @@ index 147f909..4a58180 100644
 -#if !defined(__GLIBC__)
 +/* These are defined in /usr/include/rpc/netdb.h, unless we are using
 +   the C library without RPC support. */
-+#if defined(__UCLIBC__) && !defined(__UCLIBC_HAS_RPC__)
++#if defined(__UCLIBC__) && !defined(__UCLIBC_HAS_RPC__) || !defined(__GLIBC__)
  struct rpcent {
  	char	*r_name;	/* name of server for this rpc program */
  	char	**r_aliases;	/* alias list */
diff --git a/package/libtirpc/0006-Use-local-bsdqueue.h.patch b/package/libtirpc/0006-Use-local-bsdqueue.h.patch
new file mode 100644
index 0000000000..0c9aecfc90
--- /dev/null
+++ b/package/libtirpc/0006-Use-local-bsdqueue.h.patch
@@ -0,0 +1,903 @@
+From 7c337ac4f6fa260e3c25820f780d24329d85e027 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?J=C3=B6rg=20Krause?= <joerg.krause@embedded.rocks>
+Date: Tue, 5 May 2015 17:06:03 +0200
+Subject: [PATCH 12/16] Use local bsdqueue.h
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+Not all systems provide a sys/queue.h implementation. For example the the musl
+C library does not and will not have it [1].
+
+sys/queue.h first appeared in 4.4BSD and is used in all 4.4BSD variants. Note
+that glibc' sys/queue.h is a patched version of this 4.4BDS header (adds
+STAILQ_CONCAT and TAILQ_CONCAT).
+
+There exists several implementations of sys/queue.h. Lets use the version from
+the NetBSD project [2] and provide it as a local header file "bsdqueue.h"
+
+[1] http://wiki.musl-libc.org/wiki/FAQ#Q:_why_is_sys.2Fqueue.h_not_included_.3F
+[2] http://cvsweb.netbsd.org/bsdweb.cgi/src/sys/sys/queue.h?rev=1.68
+
+Signed-off-by: Jörg Krause <joerg.krause@embedded.rocks>
+---
+ src/clnt_bcast.c |   2 +-
+ tirpc/bsdqueue.h | 846 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
+ 2 files changed, 847 insertions(+), 1 deletion(-)
+ create mode 100644 tirpc/bsdqueue.h
+
+diff --git a/src/clnt_bcast.c b/src/clnt_bcast.c
+index 262b2ab..3ed8457 100644
+--- a/src/clnt_bcast.c
++++ b/src/clnt_bcast.c
+@@ -40,7 +40,6 @@
+  */
+ #include <sys/socket.h>
+ #include <sys/types.h>
+-#include <sys/queue.h>
+ 
+ #include <net/if.h>
+ #include <netinet/in.h>
+@@ -64,6 +63,7 @@
+ #include <err.h>
+ #include <string.h>
+ 
++#include "bsdqueue.h"
+ #include "rpc_com.h"
+ 
+ #define	MAXBCAST 20	/* Max no of broadcasting transports */
+diff --git a/tirpc/bsdqueue.h b/tirpc/bsdqueue.h
+new file mode 100644
+index 0000000..99d01a5
+--- /dev/null
++++ b/tirpc/bsdqueue.h
+@@ -0,0 +1,846 @@
++/*	$NetBSD: queue.h,v 1.68 2014/11/19 08:10:01 uebayasi Exp $	*/
++
++/*
++ * Copyright (c) 1991, 1993
++ *	The Regents of the University of California.  All rights reserved.
++ *
++ * Redistribution and use in source and binary forms, with or without
++ * modification, are permitted provided that the following conditions
++ * are met:
++ * 1. Redistributions of source code must retain the above copyright
++ *    notice, this list of conditions and the following disclaimer.
++ * 2. Redistributions in binary form must reproduce the above copyright
++ *    notice, this list of conditions and the following disclaimer in the
++ *    documentation and/or other materials provided with the distribution.
++ * 3. Neither the name of the University nor the names of its contributors
++ *    may be used to endorse or promote products derived from this software
++ *    without specific prior written permission.
++ *
++ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
++ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
++ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
++ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
++ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
++ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
++ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
++ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
++ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
++ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
++ * SUCH DAMAGE.
++ *
++ *	@(#)queue.h	8.5 (Berkeley) 8/20/94
++ */
++
++#ifndef	_SYS_QUEUE_H_
++#define	_SYS_QUEUE_H_
++
++/*
++ * This file defines five types of data structures: singly-linked lists,
++ * lists, simple queues, tail queues, and circular queues.
++ *
++ * A singly-linked list is headed by a single forward pointer. The
++ * elements are singly linked for minimum space and pointer manipulation
++ * overhead at the expense of O(n) removal for arbitrary elements. New
++ * elements can be added to the list after an existing element or at the
++ * head of the list.  Elements being removed from the head of the list
++ * should use the explicit macro for this purpose for optimum
++ * efficiency. A singly-linked list may only be traversed in the forward
++ * direction.  Singly-linked lists are ideal for applications with large
++ * datasets and few or no removals or for implementing a LIFO queue.
++ *
++ * A list is headed by a single forward pointer (or an array of forward
++ * pointers for a hash table header). The elements are doubly linked
++ * so that an arbitrary element can be removed without a need to
++ * traverse the list. New elements can be added to the list before
++ * or after an existing element or at the head of the list. A list
++ * may only be traversed in the forward direction.
++ *
++ * A simple queue is headed by a pair of pointers, one the head of the
++ * list and the other to the tail of the list. The elements are singly
++ * linked to save space, so elements can only be removed from the
++ * head of the list. New elements can be added to the list after
++ * an existing element, at the head of the list, or at the end of the
++ * list. A simple queue may only be traversed in the forward direction.
++ *
++ * A tail queue is headed by a pair of pointers, one to the head of the
++ * list and the other to the tail of the list. The elements are doubly
++ * linked so that an arbitrary element can be removed without a need to
++ * traverse the list. New elements can be added to the list before or
++ * after an existing element, at the head of the list, or at the end of
++ * the list. A tail queue may be traversed in either direction.
++ *
++ * A circle queue is headed by a pair of pointers, one to the head of the
++ * list and the other to the tail of the list. The elements are doubly
++ * linked so that an arbitrary element can be removed without a need to
++ * traverse the list. New elements can be added to the list before or after
++ * an existing element, at the head of the list, or at the end of the list.
++ * A circle queue may be traversed in either direction, but has a more
++ * complex end of list detection.
++ *
++ * For details on the use of these macros, see the queue(3) manual page.
++ */
++
++/*
++ * Include the definition of NULL only on NetBSD because sys/null.h
++ * is not available elsewhere.  This conditional makes the header
++ * portable and it can simply be dropped verbatim into any system.
++ * The caveat is that on other systems some other header
++ * must provide NULL before the macros can be used.
++ */
++#ifdef __NetBSD__
++#include <sys/null.h>
++#endif
++
++#if defined(QUEUEDEBUG)
++# if defined(_KERNEL)
++#  define QUEUEDEBUG_ABORT(...) panic(__VA_ARGS__)
++# else
++#  include <err.h>
++#  define QUEUEDEBUG_ABORT(...) err(1, __VA_ARGS__)
++# endif
++#endif
++
++/*
++ * Singly-linked List definitions.
++ */
++#define	SLIST_HEAD(name, type)						\
++struct name {								\
++	struct type *slh_first;	/* first element */			\
++}
++
++#define	SLIST_HEAD_INITIALIZER(head)					\
++	{ NULL }
++
++#define	SLIST_ENTRY(type)						\
++struct {								\
++	struct type *sle_next;	/* next element */			\
++}
++
++/*
++ * Singly-linked List access methods.
++ */
++#define	SLIST_FIRST(head)	((head)->slh_first)
++#define	SLIST_END(head)		NULL
++#define	SLIST_EMPTY(head)	((head)->slh_first == NULL)
++#define	SLIST_NEXT(elm, field)	((elm)->field.sle_next)
++
++#define	SLIST_FOREACH(var, head, field)					\
++	for((var) = (head)->slh_first;					\
++	    (var) != SLIST_END(head);					\
++	    (var) = (var)->field.sle_next)
++
++#define	SLIST_FOREACH_SAFE(var, head, field, tvar)			\
++	for ((var) = SLIST_FIRST((head));				\
++	    (var) != SLIST_END(head) &&					\
++	    ((tvar) = SLIST_NEXT((var), field), 1);			\
++	    (var) = (tvar))
++
++/*
++ * Singly-linked List functions.
++ */
++#define	SLIST_INIT(head) do {						\
++	(head)->slh_first = SLIST_END(head);				\
++} while (/*CONSTCOND*/0)
++
++#define	SLIST_INSERT_AFTER(slistelm, elm, field) do {			\
++	(elm)->field.sle_next = (slistelm)->field.sle_next;		\
++	(slistelm)->field.sle_next = (elm);				\
++} while (/*CONSTCOND*/0)
++
++#define	SLIST_INSERT_HEAD(head, elm, field) do {			\
++	(elm)->field.sle_next = (head)->slh_first;			\
++	(head)->slh_first = (elm);					\
++} while (/*CONSTCOND*/0)
++
++#define	SLIST_REMOVE_AFTER(slistelm, field) do {			\
++	(slistelm)->field.sle_next =					\
++	    SLIST_NEXT(SLIST_NEXT((slistelm), field), field);		\
++} while (/*CONSTCOND*/0)
++
++#define	SLIST_REMOVE_HEAD(head, field) do {				\
++	(head)->slh_first = (head)->slh_first->field.sle_next;		\
++} while (/*CONSTCOND*/0)
++
++#define	SLIST_REMOVE(head, elm, type, field) do {			\
++	if ((head)->slh_first == (elm)) {				\
++		SLIST_REMOVE_HEAD((head), field);			\
++	}								\
++	else {								\
++		struct type *curelm = (head)->slh_first;		\
++		while(curelm->field.sle_next != (elm))			\
++			curelm = curelm->field.sle_next;		\
++		curelm->field.sle_next =				\
++		    curelm->field.sle_next->field.sle_next;		\
++	}								\
++} while (/*CONSTCOND*/0)
++
++
++/*
++ * List definitions.
++ */
++#define	LIST_HEAD(name, type)						\
++struct name {								\
++	struct type *lh_first;	/* first element */			\
++}
++
++#define	LIST_HEAD_INITIALIZER(head)					\
++	{ NULL }
++
++#define	LIST_ENTRY(type)						\
++struct {								\
++	struct type *le_next;	/* next element */			\
++	struct type **le_prev;	/* address of previous next element */	\
++}
++
++/*
++ * List access methods.
++ */
++#define	LIST_FIRST(head)		((head)->lh_first)
++#define	LIST_END(head)			NULL
++#define	LIST_EMPTY(head)		((head)->lh_first == LIST_END(head))
++#define	LIST_NEXT(elm, field)		((elm)->field.le_next)
++
++#define	LIST_FOREACH(var, head, field)					\
++	for ((var) = ((head)->lh_first);				\
++	    (var) != LIST_END(head);					\
++	    (var) = ((var)->field.le_next))
++
++#define	LIST_FOREACH_SAFE(var, head, field, tvar)			\
++	for ((var) = LIST_FIRST((head));				\
++	    (var) != LIST_END(head) &&					\
++	    ((tvar) = LIST_NEXT((var), field), 1);			\
++	    (var) = (tvar))
++
++#define	LIST_MOVE(head1, head2) do {					\
++	LIST_INIT((head2));						\
++	if (!LIST_EMPTY((head1))) {					\
++		(head2)->lh_first = (head1)->lh_first;			\
++		LIST_INIT((head1));					\
++	}								\
++} while (/*CONSTCOND*/0)
++
++/*
++ * List functions.
++ */
++#if defined(QUEUEDEBUG)
++#define	QUEUEDEBUG_LIST_INSERT_HEAD(head, elm, field)			\
++	if ((head)->lh_first &&						\
++	    (head)->lh_first->field.le_prev != &(head)->lh_first)	\
++		QUEUEDEBUG_ABORT("LIST_INSERT_HEAD %p %s:%d", (head),	\
++		    __FILE__, __LINE__);
++#define	QUEUEDEBUG_LIST_OP(elm, field)					\
++	if ((elm)->field.le_next &&					\
++	    (elm)->field.le_next->field.le_prev !=			\
++	    &(elm)->field.le_next)					\
++		QUEUEDEBUG_ABORT("LIST_* forw %p %s:%d", (elm),		\
++		    __FILE__, __LINE__);				\
++	if (*(elm)->field.le_prev != (elm))				\
++		QUEUEDEBUG_ABORT("LIST_* back %p %s:%d", (elm),		\
++		    __FILE__, __LINE__);
++#define	QUEUEDEBUG_LIST_POSTREMOVE(elm, field)				\
++	(elm)->field.le_next = (void *)1L;				\
++	(elm)->field.le_prev = (void *)1L;
++#else
++#define	QUEUEDEBUG_LIST_INSERT_HEAD(head, elm, field)
++#define	QUEUEDEBUG_LIST_OP(elm, field)
++#define	QUEUEDEBUG_LIST_POSTREMOVE(elm, field)
++#endif
++
++#define	LIST_INIT(head) do {						\
++	(head)->lh_first = LIST_END(head);				\
++} while (/*CONSTCOND*/0)
++
++#define	LIST_INSERT_AFTER(listelm, elm, field) do {			\
++	QUEUEDEBUG_LIST_OP((listelm), field)				\
++	if (((elm)->field.le_next = (listelm)->field.le_next) != 	\
++	    LIST_END(head))						\
++		(listelm)->field.le_next->field.le_prev =		\
++		    &(elm)->field.le_next;				\
++	(listelm)->field.le_next = (elm);				\
++	(elm)->field.le_prev = &(listelm)->field.le_next;		\
++} while (/*CONSTCOND*/0)
++
++#define	LIST_INSERT_BEFORE(listelm, elm, field) do {			\
++	QUEUEDEBUG_LIST_OP((listelm), field)				\
++	(elm)->field.le_prev = (listelm)->field.le_prev;		\
++	(elm)->field.le_next = (listelm);				\
++	*(listelm)->field.le_prev = (elm);				\
++	(listelm)->field.le_prev = &(elm)->field.le_next;		\
++} while (/*CONSTCOND*/0)
++
++#define	LIST_INSERT_HEAD(head, elm, field) do {				\
++	QUEUEDEBUG_LIST_INSERT_HEAD((head), (elm), field)		\
++	if (((elm)->field.le_next = (head)->lh_first) != LIST_END(head))\
++		(head)->lh_first->field.le_prev = &(elm)->field.le_next;\
++	(head)->lh_first = (elm);					\
++	(elm)->field.le_prev = &(head)->lh_first;			\
++} while (/*CONSTCOND*/0)
++
++#define	LIST_REMOVE(elm, field) do {					\
++	QUEUEDEBUG_LIST_OP((elm), field)				\
++	if ((elm)->field.le_next != NULL)				\
++		(elm)->field.le_next->field.le_prev = 			\
++		    (elm)->field.le_prev;				\
++	*(elm)->field.le_prev = (elm)->field.le_next;			\
++	QUEUEDEBUG_LIST_POSTREMOVE((elm), field)			\
++} while (/*CONSTCOND*/0)
++
++#define LIST_REPLACE(elm, elm2, field) do {				\
++	if (((elm2)->field.le_next = (elm)->field.le_next) != NULL)	\
++		(elm2)->field.le_next->field.le_prev =			\
++		    &(elm2)->field.le_next;				\
++	(elm2)->field.le_prev = (elm)->field.le_prev;			\
++	*(elm2)->field.le_prev = (elm2);				\
++	QUEUEDEBUG_LIST_POSTREMOVE((elm), field)			\
++} while (/*CONSTCOND*/0)
++
++/*
++ * Simple queue definitions.
++ */
++#define	SIMPLEQ_HEAD(name, type)					\
++struct name {								\
++	struct type *sqh_first;	/* first element */			\
++	struct type **sqh_last;	/* addr of last next element */		\
++}
++
++#define	SIMPLEQ_HEAD_INITIALIZER(head)					\
++	{ NULL, &(head).sqh_first }
++
++#define	SIMPLEQ_ENTRY(type)						\
++struct {								\
++	struct type *sqe_next;	/* next element */			\
++}
++
++/*
++ * Simple queue access methods.
++ */
++#define	SIMPLEQ_FIRST(head)		((head)->sqh_first)
++#define	SIMPLEQ_END(head)		NULL
++#define	SIMPLEQ_EMPTY(head)		((head)->sqh_first == SIMPLEQ_END(head))
++#define	SIMPLEQ_NEXT(elm, field)	((elm)->field.sqe_next)
++
++#define	SIMPLEQ_FOREACH(var, head, field)				\
++	for ((var) = ((head)->sqh_first);				\
++	    (var) != SIMPLEQ_END(head);					\
++	    (var) = ((var)->field.sqe_next))
++
++#define	SIMPLEQ_FOREACH_SAFE(var, head, field, next)			\
++	for ((var) = ((head)->sqh_first);				\
++	    (var) != SIMPLEQ_END(head) &&				\
++	    ((next = ((var)->field.sqe_next)), 1);			\
++	    (var) = (next))
++
++/*
++ * Simple queue functions.
++ */
++#define	SIMPLEQ_INIT(head) do {						\
++	(head)->sqh_first = NULL;					\
++	(head)->sqh_last = &(head)->sqh_first;				\
++} while (/*CONSTCOND*/0)
++
++#define	SIMPLEQ_INSERT_HEAD(head, elm, field) do {			\
++	if (((elm)->field.sqe_next = (head)->sqh_first) == NULL)	\
++		(head)->sqh_last = &(elm)->field.sqe_next;		\
++	(head)->sqh_first = (elm);					\
++} while (/*CONSTCOND*/0)
++
++#define	SIMPLEQ_INSERT_TAIL(head, elm, field) do {			\
++	(elm)->field.sqe_next = NULL;					\
++	*(head)->sqh_last = (elm);					\
++	(head)->sqh_last = &(elm)->field.sqe_next;			\
++} while (/*CONSTCOND*/0)
++
++#define	SIMPLEQ_INSERT_AFTER(head, listelm, elm, field) do {		\
++	if (((elm)->field.sqe_next = (listelm)->field.sqe_next) == NULL)\
++		(head)->sqh_last = &(elm)->field.sqe_next;		\
++	(listelm)->field.sqe_next = (elm);				\
++} while (/*CONSTCOND*/0)
++
++#define	SIMPLEQ_REMOVE_HEAD(head, field) do {				\
++	if (((head)->sqh_first = (head)->sqh_first->field.sqe_next) == NULL) \
++		(head)->sqh_last = &(head)->sqh_first;			\
++} while (/*CONSTCOND*/0)
++
++#define SIMPLEQ_REMOVE_AFTER(head, elm, field) do {			\
++	if (((elm)->field.sqe_next = (elm)->field.sqe_next->field.sqe_next) \
++	    == NULL)							\
++		(head)->sqh_last = &(elm)->field.sqe_next;		\
++} while (/*CONSTCOND*/0)
++
++#define	SIMPLEQ_REMOVE(head, elm, type, field) do {			\
++	if ((head)->sqh_first == (elm)) {				\
++		SIMPLEQ_REMOVE_HEAD((head), field);			\
++	} else {							\
++		struct type *curelm = (head)->sqh_first;		\
++		while (curelm->field.sqe_next != (elm))			\
++			curelm = curelm->field.sqe_next;		\
++		if ((curelm->field.sqe_next =				\
++			curelm->field.sqe_next->field.sqe_next) == NULL) \
++			    (head)->sqh_last = &(curelm)->field.sqe_next; \
++	}								\
++} while (/*CONSTCOND*/0)
++
++#define	SIMPLEQ_CONCAT(head1, head2) do {				\
++	if (!SIMPLEQ_EMPTY((head2))) {					\
++		*(head1)->sqh_last = (head2)->sqh_first;		\
++		(head1)->sqh_last = (head2)->sqh_last;		\
++		SIMPLEQ_INIT((head2));					\
++	}								\
++} while (/*CONSTCOND*/0)
++
++#define	SIMPLEQ_LAST(head, type, field)					\
++	(SIMPLEQ_EMPTY((head)) ?						\
++		NULL :							\
++	        ((struct type *)(void *)				\
++		((char *)((head)->sqh_last) - offsetof(struct type, field))))
++
++/*
++ * Tail queue definitions.
++ */
++#define	_TAILQ_HEAD(name, type, qual)					\
++struct name {								\
++	qual type *tqh_first;		/* first element */		\
++	qual type *qual *tqh_last;	/* addr of last next element */	\
++}
++#define TAILQ_HEAD(name, type)	_TAILQ_HEAD(name, struct type,)
++
++#define	TAILQ_HEAD_INITIALIZER(head)					\
++	{ TAILQ_END(head), &(head).tqh_first }
++
++#define	_TAILQ_ENTRY(type, qual)					\
++struct {								\
++	qual type *tqe_next;		/* next element */		\
++	qual type *qual *tqe_prev;	/* address of previous next element */\
++}
++#define TAILQ_ENTRY(type)	_TAILQ_ENTRY(struct type,)
++
++/*
++ * Tail queue access methods.
++ */
++#define	TAILQ_FIRST(head)		((head)->tqh_first)
++#define	TAILQ_END(head)			(NULL)
++#define	TAILQ_NEXT(elm, field)		((elm)->field.tqe_next)
++#define	TAILQ_LAST(head, headname) \
++	(*(((struct headname *)((head)->tqh_last))->tqh_last))
++#define	TAILQ_PREV(elm, headname, field) \
++	(*(((struct headname *)((elm)->field.tqe_prev))->tqh_last))
++#define	TAILQ_EMPTY(head)		(TAILQ_FIRST(head) == TAILQ_END(head))
++
++
++#define	TAILQ_FOREACH(var, head, field)					\
++	for ((var) = ((head)->tqh_first);				\
++	    (var) != TAILQ_END(head);					\
++	    (var) = ((var)->field.tqe_next))
++
++#define	TAILQ_FOREACH_SAFE(var, head, field, next)			\
++	for ((var) = ((head)->tqh_first);				\
++	    (var) != TAILQ_END(head) &&					\
++	    ((next) = TAILQ_NEXT(var, field), 1); (var) = (next))
++
++#define	TAILQ_FOREACH_REVERSE(var, head, headname, field)		\
++	for ((var) = (*(((struct headname *)((head)->tqh_last))->tqh_last));\
++	    (var) != TAILQ_END(head);					\
++	    (var) = (*(((struct headname *)((var)->field.tqe_prev))->tqh_last)))
++
++#define	TAILQ_FOREACH_REVERSE_SAFE(var, head, headname, field, prev)	\
++	for ((var) = TAILQ_LAST((head), headname);			\
++	    (var) != TAILQ_END(head) && 				\
++	    ((prev) = TAILQ_PREV((var), headname, field), 1); (var) = (prev))
++
++/*
++ * Tail queue functions.
++ */
++#if defined(QUEUEDEBUG)
++#define	QUEUEDEBUG_TAILQ_INSERT_HEAD(head, elm, field)			\
++	if ((head)->tqh_first &&					\
++	    (head)->tqh_first->field.tqe_prev != &(head)->tqh_first)	\
++		QUEUEDEBUG_ABORT("TAILQ_INSERT_HEAD %p %s:%d", (head),	\
++		    __FILE__, __LINE__);
++#define	QUEUEDEBUG_TAILQ_INSERT_TAIL(head, elm, field)			\
++	if (*(head)->tqh_last != NULL)					\
++		QUEUEDEBUG_ABORT("TAILQ_INSERT_TAIL %p %s:%d", (head),	\
++		    __FILE__, __LINE__);
++#define	QUEUEDEBUG_TAILQ_OP(elm, field)					\
++	if ((elm)->field.tqe_next &&					\
++	    (elm)->field.tqe_next->field.tqe_prev !=			\
++	    &(elm)->field.tqe_next)					\
++		QUEUEDEBUG_ABORT("TAILQ_* forw %p %s:%d", (elm),	\
++		    __FILE__, __LINE__);				\
++	if (*(elm)->field.tqe_prev != (elm))				\
++		QUEUEDEBUG_ABORT("TAILQ_* back %p %s:%d", (elm),	\
++		    __FILE__, __LINE__);
++#define	QUEUEDEBUG_TAILQ_PREREMOVE(head, elm, field)			\
++	if ((elm)->field.tqe_next == NULL &&				\
++	    (head)->tqh_last != &(elm)->field.tqe_next)			\
++		QUEUEDEBUG_ABORT("TAILQ_PREREMOVE head %p elm %p %s:%d",\
++		    (head), (elm), __FILE__, __LINE__);
++#define	QUEUEDEBUG_TAILQ_POSTREMOVE(elm, field)				\
++	(elm)->field.tqe_next = (void *)1L;				\
++	(elm)->field.tqe_prev = (void *)1L;
++#else
++#define	QUEUEDEBUG_TAILQ_INSERT_HEAD(head, elm, field)
++#define	QUEUEDEBUG_TAILQ_INSERT_TAIL(head, elm, field)
++#define	QUEUEDEBUG_TAILQ_OP(elm, field)
++#define	QUEUEDEBUG_TAILQ_PREREMOVE(head, elm, field)
++#define	QUEUEDEBUG_TAILQ_POSTREMOVE(elm, field)
++#endif
++
++#define	TAILQ_INIT(head) do {						\
++	(head)->tqh_first = TAILQ_END(head);				\
++	(head)->tqh_last = &(head)->tqh_first;				\
++} while (/*CONSTCOND*/0)
++
++#define	TAILQ_INSERT_HEAD(head, elm, field) do {			\
++	QUEUEDEBUG_TAILQ_INSERT_HEAD((head), (elm), field)		\
++	if (((elm)->field.tqe_next = (head)->tqh_first) != TAILQ_END(head))\
++		(head)->tqh_first->field.tqe_prev =			\
++		    &(elm)->field.tqe_next;				\
++	else								\
++		(head)->tqh_last = &(elm)->field.tqe_next;		\
++	(head)->tqh_first = (elm);					\
++	(elm)->field.tqe_prev = &(head)->tqh_first;			\
++} while (/*CONSTCOND*/0)
++
++#define	TAILQ_INSERT_TAIL(head, elm, field) do {			\
++	QUEUEDEBUG_TAILQ_INSERT_TAIL((head), (elm), field)		\
++	(elm)->field.tqe_next = TAILQ_END(head);			\
++	(elm)->field.tqe_prev = (head)->tqh_last;			\
++	*(head)->tqh_last = (elm);					\
++	(head)->tqh_last = &(elm)->field.tqe_next;			\
++} while (/*CONSTCOND*/0)
++
++#define	TAILQ_INSERT_AFTER(head, listelm, elm, field) do {		\
++	QUEUEDEBUG_TAILQ_OP((listelm), field)				\
++	if (((elm)->field.tqe_next = (listelm)->field.tqe_next) != 	\
++	    TAILQ_END(head))						\
++		(elm)->field.tqe_next->field.tqe_prev = 		\
++		    &(elm)->field.tqe_next;				\
++	else								\
++		(head)->tqh_last = &(elm)->field.tqe_next;		\
++	(listelm)->field.tqe_next = (elm);				\
++	(elm)->field.tqe_prev = &(listelm)->field.tqe_next;		\
++} while (/*CONSTCOND*/0)
++
++#define	TAILQ_INSERT_BEFORE(listelm, elm, field) do {			\
++	QUEUEDEBUG_TAILQ_OP((listelm), field)				\
++	(elm)->field.tqe_prev = (listelm)->field.tqe_prev;		\
++	(elm)->field.tqe_next = (listelm);				\
++	*(listelm)->field.tqe_prev = (elm);				\
++	(listelm)->field.tqe_prev = &(elm)->field.tqe_next;		\
++} while (/*CONSTCOND*/0)
++
++#define	TAILQ_REMOVE(head, elm, field) do {				\
++	QUEUEDEBUG_TAILQ_PREREMOVE((head), (elm), field)		\
++	QUEUEDEBUG_TAILQ_OP((elm), field)				\
++	if (((elm)->field.tqe_next) != TAILQ_END(head))			\
++		(elm)->field.tqe_next->field.tqe_prev = 		\
++		    (elm)->field.tqe_prev;				\
++	else								\
++		(head)->tqh_last = (elm)->field.tqe_prev;		\
++	*(elm)->field.tqe_prev = (elm)->field.tqe_next;			\
++	QUEUEDEBUG_TAILQ_POSTREMOVE((elm), field);			\
++} while (/*CONSTCOND*/0)
++
++#define TAILQ_REPLACE(head, elm, elm2, field) do {			\
++        if (((elm2)->field.tqe_next = (elm)->field.tqe_next) != 	\
++	    TAILQ_END(head))   						\
++                (elm2)->field.tqe_next->field.tqe_prev =		\
++                    &(elm2)->field.tqe_next;				\
++        else								\
++                (head)->tqh_last = &(elm2)->field.tqe_next;		\
++        (elm2)->field.tqe_prev = (elm)->field.tqe_prev;			\
++        *(elm2)->field.tqe_prev = (elm2);				\
++	QUEUEDEBUG_TAILQ_POSTREMOVE((elm), field);			\
++} while (/*CONSTCOND*/0)
++
++#define	TAILQ_CONCAT(head1, head2, field) do {				\
++	if (!TAILQ_EMPTY(head2)) {					\
++		*(head1)->tqh_last = (head2)->tqh_first;		\
++		(head2)->tqh_first->field.tqe_prev = (head1)->tqh_last;	\
++		(head1)->tqh_last = (head2)->tqh_last;			\
++		TAILQ_INIT((head2));					\
++	}								\
++} while (/*CONSTCOND*/0)
++
++/*
++ * Singly-linked Tail queue declarations.
++ */
++#define	STAILQ_HEAD(name, type)						\
++struct name {								\
++	struct type *stqh_first;	/* first element */		\
++	struct type **stqh_last;	/* addr of last next element */	\
++}
++
++#define	STAILQ_HEAD_INITIALIZER(head)					\
++	{ NULL, &(head).stqh_first }
++
++#define	STAILQ_ENTRY(type)						\
++struct {								\
++	struct type *stqe_next;	/* next element */			\
++}
++
++/*
++ * Singly-linked Tail queue access methods.
++ */
++#define	STAILQ_FIRST(head)	((head)->stqh_first)
++#define	STAILQ_END(head)	NULL
++#define	STAILQ_NEXT(elm, field)	((elm)->field.stqe_next)
++#define	STAILQ_EMPTY(head)	(STAILQ_FIRST(head) == STAILQ_END(head))
++
++/*
++ * Singly-linked Tail queue functions.
++ */
++#define	STAILQ_INIT(head) do {						\
++	(head)->stqh_first = NULL;					\
++	(head)->stqh_last = &(head)->stqh_first;				\
++} while (/*CONSTCOND*/0)
++
++#define	STAILQ_INSERT_HEAD(head, elm, field) do {			\
++	if (((elm)->field.stqe_next = (head)->stqh_first) == NULL)	\
++		(head)->stqh_last = &(elm)->field.stqe_next;		\
++	(head)->stqh_first = (elm);					\
++} while (/*CONSTCOND*/0)
++
++#define	STAILQ_INSERT_TAIL(head, elm, field) do {			\
++	(elm)->field.stqe_next = NULL;					\
++	*(head)->stqh_last = (elm);					\
++	(head)->stqh_last = &(elm)->field.stqe_next;			\
++} while (/*CONSTCOND*/0)
++
++#define	STAILQ_INSERT_AFTER(head, listelm, elm, field) do {		\
++	if (((elm)->field.stqe_next = (listelm)->field.stqe_next) == NULL)\
++		(head)->stqh_last = &(elm)->field.stqe_next;		\
++	(listelm)->field.stqe_next = (elm);				\
++} while (/*CONSTCOND*/0)
++
++#define	STAILQ_REMOVE_HEAD(head, field) do {				\
++	if (((head)->stqh_first = (head)->stqh_first->field.stqe_next) == NULL) \
++		(head)->stqh_last = &(head)->stqh_first;			\
++} while (/*CONSTCOND*/0)
++
++#define	STAILQ_REMOVE(head, elm, type, field) do {			\
++	if ((head)->stqh_first == (elm)) {				\
++		STAILQ_REMOVE_HEAD((head), field);			\
++	} else {							\
++		struct type *curelm = (head)->stqh_first;		\
++		while (curelm->field.stqe_next != (elm))			\
++			curelm = curelm->field.stqe_next;		\
++		if ((curelm->field.stqe_next =				\
++			curelm->field.stqe_next->field.stqe_next) == NULL) \
++			    (head)->stqh_last = &(curelm)->field.stqe_next; \
++	}								\
++} while (/*CONSTCOND*/0)
++
++#define	STAILQ_FOREACH(var, head, field)				\
++	for ((var) = ((head)->stqh_first);				\
++		(var);							\
++		(var) = ((var)->field.stqe_next))
++
++#define	STAILQ_FOREACH_SAFE(var, head, field, tvar)			\
++	for ((var) = STAILQ_FIRST((head));				\
++	    (var) && ((tvar) = STAILQ_NEXT((var), field), 1);		\
++	    (var) = (tvar))
++
++#define	STAILQ_CONCAT(head1, head2) do {				\
++	if (!STAILQ_EMPTY((head2))) {					\
++		*(head1)->stqh_last = (head2)->stqh_first;		\
++		(head1)->stqh_last = (head2)->stqh_last;		\
++		STAILQ_INIT((head2));					\
++	}								\
++} while (/*CONSTCOND*/0)
++
++#define	STAILQ_LAST(head, type, field)					\
++	(STAILQ_EMPTY((head)) ?						\
++		NULL :							\
++	        ((struct type *)(void *)				\
++		((char *)((head)->stqh_last) - offsetof(struct type, field))))
++
++
++#ifndef _KERNEL
++/*
++ * Circular queue definitions. Do not use. We still keep the macros
++ * for compatibility but because of pointer aliasing issues their use
++ * is discouraged!
++ */
++
++/*
++ * __launder_type():  We use this ugly hack to work around the the compiler
++ * noticing that two types may not alias each other and elide tests in code.
++ * We hit this in the CIRCLEQ macros when comparing 'struct name *' and
++ * 'struct type *' (see CIRCLEQ_HEAD()).  Modern compilers (such as GCC
++ * 4.8) declare these comparisons as always false, causing the code to
++ * not run as designed.
++ *
++ * This hack is only to be used for comparisons and thus can be fully const.
++ * Do not use for assignment.
++ *
++ * If we ever choose to change the ABI of the CIRCLEQ macros, we could fix
++ * this by changing the head/tail sentinal values, but see the note above
++ * this one.
++ */
++static __inline const void * __launder_type(const void *);
++static __inline const void *
++__launder_type(const void *__x)
++{
++	__asm __volatile("" : "+r" (__x));
++	return __x;
++}
++
++#if defined(QUEUEDEBUG)
++#define QUEUEDEBUG_CIRCLEQ_HEAD(head, field)				\
++	if ((head)->cqh_first != CIRCLEQ_ENDC(head) &&			\
++	    (head)->cqh_first->field.cqe_prev != CIRCLEQ_ENDC(head))	\
++		QUEUEDEBUG_ABORT("CIRCLEQ head forw %p %s:%d", (head),	\
++		      __FILE__, __LINE__);				\
++	if ((head)->cqh_last != CIRCLEQ_ENDC(head) &&			\
++	    (head)->cqh_last->field.cqe_next != CIRCLEQ_ENDC(head))	\
++		QUEUEDEBUG_ABORT("CIRCLEQ head back %p %s:%d", (head),	\
++		      __FILE__, __LINE__);
++#define QUEUEDEBUG_CIRCLEQ_ELM(head, elm, field)			\
++	if ((elm)->field.cqe_next == CIRCLEQ_ENDC(head)) {		\
++		if ((head)->cqh_last != (elm))				\
++			QUEUEDEBUG_ABORT("CIRCLEQ elm last %p %s:%d",	\
++			    (elm), __FILE__, __LINE__);			\
++	} else {							\
++		if ((elm)->field.cqe_next->field.cqe_prev != (elm))	\
++			QUEUEDEBUG_ABORT("CIRCLEQ elm forw %p %s:%d",	\
++			    (elm), __FILE__, __LINE__);			\
++	}								\
++	if ((elm)->field.cqe_prev == CIRCLEQ_ENDC(head)) {		\
++		if ((head)->cqh_first != (elm))				\
++			QUEUEDEBUG_ABORT("CIRCLEQ elm first %p %s:%d",	\
++			    (elm), __FILE__, __LINE__);			\
++	} else {							\
++		if ((elm)->field.cqe_prev->field.cqe_next != (elm))	\
++			QUEUEDEBUG_ABORT("CIRCLEQ elm prev %p %s:%d",	\
++			    (elm), __FILE__, __LINE__);			\
++	}
++#define QUEUEDEBUG_CIRCLEQ_POSTREMOVE(elm, field)			\
++	(elm)->field.cqe_next = (void *)1L;				\
++	(elm)->field.cqe_prev = (void *)1L;
++#else
++#define QUEUEDEBUG_CIRCLEQ_HEAD(head, field)
++#define QUEUEDEBUG_CIRCLEQ_ELM(head, elm, field)
++#define QUEUEDEBUG_CIRCLEQ_POSTREMOVE(elm, field)
++#endif
++
++#define	CIRCLEQ_HEAD(name, type)					\
++struct name {								\
++	struct type *cqh_first;		/* first element */		\
++	struct type *cqh_last;		/* last element */		\
++}
++
++#define	CIRCLEQ_HEAD_INITIALIZER(head)					\
++	{ CIRCLEQ_END(&head), CIRCLEQ_END(&head) }
++
++#define	CIRCLEQ_ENTRY(type)						\
++struct {								\
++	struct type *cqe_next;		/* next element */		\
++	struct type *cqe_prev;		/* previous element */		\
++}
++
++/*
++ * Circular queue functions.
++ */
++#define	CIRCLEQ_INIT(head) do {						\
++	(head)->cqh_first = CIRCLEQ_END(head);				\
++	(head)->cqh_last = CIRCLEQ_END(head);				\
++} while (/*CONSTCOND*/0)
++
++#define	CIRCLEQ_INSERT_AFTER(head, listelm, elm, field) do {		\
++	QUEUEDEBUG_CIRCLEQ_HEAD((head), field)				\
++	QUEUEDEBUG_CIRCLEQ_ELM((head), (listelm), field)		\
++	(elm)->field.cqe_next = (listelm)->field.cqe_next;		\
++	(elm)->field.cqe_prev = (listelm);				\
++	if ((listelm)->field.cqe_next == CIRCLEQ_ENDC(head))		\
++		(head)->cqh_last = (elm);				\
++	else								\
++		(listelm)->field.cqe_next->field.cqe_prev = (elm);	\
++	(listelm)->field.cqe_next = (elm);				\
++} while (/*CONSTCOND*/0)
++
++#define	CIRCLEQ_INSERT_BEFORE(head, listelm, elm, field) do {		\
++	QUEUEDEBUG_CIRCLEQ_HEAD((head), field)				\
++	QUEUEDEBUG_CIRCLEQ_ELM((head), (listelm), field)		\
++	(elm)->field.cqe_next = (listelm);				\
++	(elm)->field.cqe_prev = (listelm)->field.cqe_prev;		\
++	if ((listelm)->field.cqe_prev == CIRCLEQ_ENDC(head))		\
++		(head)->cqh_first = (elm);				\
++	else								\
++		(listelm)->field.cqe_prev->field.cqe_next = (elm);	\
++	(listelm)->field.cqe_prev = (elm);				\
++} while (/*CONSTCOND*/0)
++
++#define	CIRCLEQ_INSERT_HEAD(head, elm, field) do {			\
++	QUEUEDEBUG_CIRCLEQ_HEAD((head), field)				\
++	(elm)->field.cqe_next = (head)->cqh_first;			\
++	(elm)->field.cqe_prev = CIRCLEQ_END(head);			\
++	if ((head)->cqh_last == CIRCLEQ_ENDC(head))			\
++		(head)->cqh_last = (elm);				\
++	else								\
++		(head)->cqh_first->field.cqe_prev = (elm);		\
++	(head)->cqh_first = (elm);					\
++} while (/*CONSTCOND*/0)
++
++#define	CIRCLEQ_INSERT_TAIL(head, elm, field) do {			\
++	QUEUEDEBUG_CIRCLEQ_HEAD((head), field)				\
++	(elm)->field.cqe_next = CIRCLEQ_END(head);			\
++	(elm)->field.cqe_prev = (head)->cqh_last;			\
++	if ((head)->cqh_first == CIRCLEQ_ENDC(head))			\
++		(head)->cqh_first = (elm);				\
++	else								\
++		(head)->cqh_last->field.cqe_next = (elm);		\
++	(head)->cqh_last = (elm);					\
++} while (/*CONSTCOND*/0)
++
++#define	CIRCLEQ_REMOVE(head, elm, field) do {				\
++	QUEUEDEBUG_CIRCLEQ_HEAD((head), field)				\
++	QUEUEDEBUG_CIRCLEQ_ELM((head), (elm), field)			\
++	if ((elm)->field.cqe_next == CIRCLEQ_ENDC(head))		\
++		(head)->cqh_last = (elm)->field.cqe_prev;		\
++	else								\
++		(elm)->field.cqe_next->field.cqe_prev =			\
++		    (elm)->field.cqe_prev;				\
++	if ((elm)->field.cqe_prev == CIRCLEQ_ENDC(head))		\
++		(head)->cqh_first = (elm)->field.cqe_next;		\
++	else								\
++		(elm)->field.cqe_prev->field.cqe_next =			\
++		    (elm)->field.cqe_next;				\
++	QUEUEDEBUG_CIRCLEQ_POSTREMOVE((elm), field)			\
++} while (/*CONSTCOND*/0)
++
++#define	CIRCLEQ_FOREACH(var, head, field)				\
++	for ((var) = ((head)->cqh_first);				\
++		(var) != CIRCLEQ_ENDC(head);				\
++		(var) = ((var)->field.cqe_next))
++
++#define	CIRCLEQ_FOREACH_REVERSE(var, head, field)			\
++	for ((var) = ((head)->cqh_last);				\
++		(var) != CIRCLEQ_ENDC(head);				\
++		(var) = ((var)->field.cqe_prev))
++
++/*
++ * Circular queue access methods.
++ */
++#define	CIRCLEQ_FIRST(head)		((head)->cqh_first)
++#define	CIRCLEQ_LAST(head)		((head)->cqh_last)
++/* For comparisons */
++#define	CIRCLEQ_ENDC(head)		(__launder_type(head))
++/* For assignments */
++#define	CIRCLEQ_END(head)		((void *)(head))
++#define	CIRCLEQ_NEXT(elm, field)	((elm)->field.cqe_next)
++#define	CIRCLEQ_PREV(elm, field)	((elm)->field.cqe_prev)
++#define	CIRCLEQ_EMPTY(head)						\
++    (CIRCLEQ_FIRST(head) == CIRCLEQ_ENDC(head))
++
++#define CIRCLEQ_LOOP_NEXT(head, elm, field)				\
++	(((elm)->field.cqe_next == CIRCLEQ_ENDC(head))			\
++	    ? ((head)->cqh_first)					\
++	    : (elm->field.cqe_next))
++#define CIRCLEQ_LOOP_PREV(head, elm, field)				\
++	(((elm)->field.cqe_prev == CIRCLEQ_ENDC(head))			\
++	    ? ((head)->cqh_last)					\
++	    : (elm->field.cqe_prev))
++#endif /* !_KERNEL */
++
++#endif	/* !_SYS_QUEUE_H_ */
+-- 
+2.3.7
+