Update.cvs/libc-ud-970827

1997-08-10 19:17  Philip Blundell  <Philip.Blundell@pobox.com>

	* nss/nss_db/db-XXX.c: Include <db_185.h> not <db.h>.  Somebody
	should update this to use the new db API.
	* nss/nss_db/db-netgrp.c: Likewise.
	* nss/nss_db/db-alias.c: Likewise.
	* db2/Makefile: Makefile for db-2.x in glibc.

1997-08-27 21:20  Ulrich Drepper  <drepper@cygnus.com>

	* csu/Makefile (before-compile): New goal.  Make sure abi-tag.h
	is generated.
	[$(elf)=yes] (asm-CPPFLAGS): Make sure abi-tag.h file can be found.

	* Makeconfig [$(build-omitfp)=yes] (CFLAGS-.o): Add
	-D__USE_STRING_INLINES.
	* string/string.f: Move strnlen optimization after inclusion of
	<bits/string.h>.  Include <bits/string.h> only if __USE_STRING_INLINES
	is defined.
	* sysdeps/generic/memcpy.c: Undef memcpy to allow macro of this name
	in <bits/string.h>.
	* sysdeps/generic/memset.c: Likewise.
	* sysdeps/i386/string.h: i386 optimized string functions.
	* sysdeps/i386/i486string.h: i486+ optimized string functions.

	* Makefile (subdirs): Change db to db2.
	* shlib-versions: Bump libdb verion number to 3.
	* include/db.h: Include from db2 directory.
	* include/db_185.h: New file.
	* sysdeps/i386/Makefile [$(subdirs)=db2] (CPPFLAGS): Add macros
	to provide spinlock information for db2.
	* sysdeps/m68k/m68020/Makefile: New file.  Likewise.
	* sysdeps/sparc/Makefile: New file.  Likewise.
	* sysdeps/unix/sysv/linux/Makefile [$(subdirs)=db2] (CPPFLAGS):
	Add -DHAVE_LLSEEK.
	* db2/config.h: Hand-edited config file for db2 in glibc.
	* db2/compat.h: New file from db-2.3.4.
	* db2/db.h: Likewise.
	* db2/db_185.h: Likewise.
	* db2/db_int.h: Likewise.
	* db2/makedb.c: Likewise.
	* db2/btree/bt_close.c: Likewise.
	* db2/btree/bt_compare.c: Likewise.
	* db2/btree/bt_conv.c: Likewise.
	* db2/btree/bt_cursor.c: Likewise.
	* db2/btree/bt_delete.c: Likewise.
	* db2/btree/bt_open.c: Likewise.
	* db2/btree/bt_page.c: Likewise.
	* db2/btree/bt_put.c: Likewise.
	* db2/btree/bt_rec.c: Likewise.
	* db2/btree/bt_recno.c: Likewise.
	* db2/btree/btree_auto.c: Likewise.
	* db2/btree/bt_rsearch.c: Likewise.
	* db2/btree/bt_search.c: Likewise.
	* db2/btree/bt_split.c: Likewise.
	* db2/btree/bt_stat.c: Likewise.
	* db2/btree/btree.src: Likewise.
	* db2/common/db_appinit.c: Likewise.
	* db2/common/db_err.c: Likewise.
	* db2/common/db_byteorder.c: Likewise.
	* db2/common/db_apprec.c: Likewise.
	* db2/common/db_salloc.c: Likewise.
	* db2/common/db_log2.c: Likewise.
	* db2/common/db_region.c: Likewise.
	* db2/common/db_shash.c: Likewise.
	* db2/db/db.c: Likewise.
	* db2/db/db.src: Likewise.
	* db2/db/db_conv.c: Likewise.
	* db2/db/db_dispatch.c: Likewise.
	* db2/db/db_dup.c: Likewise.
	* db2/db/db_overflow.c: Likewise.
	* db2/db/db_pr.c: Likewise.
	* db2/db/db_rec.c: Likewise.
	* db2/db/db_ret.c: Likewise.
	* db2/db/db_thread.c: Likewise.
	* db2/db/db_auto.c: Likewise.
	* db2/db185/db185.c: Likewise.
	* db2/db185/db185_int.h: Likewise.
	* db2/dbm/dbm.c: Likewise.
	* db2/hash/hash.c: Likewise.
	* db2/hash/hash.src: Likewise.
	* db2/hash/hash_page.c: Likewise.
	* db2/hash/hash_conv.c: Likewise.
	* db2/hash/hash_debug.c: Likewise.
	* db2/hash/hash_stat.c: Likewise.
	* db2/hash/hash_rec.c: Likewise.
	* db2/hash/hash_dup.c: Likewise.
	* db2/hash/hash_func.c: Likewise.
	* db2/hash/hash_auto.c: Likewise.
	* db2/include/mp.h: Likewise.
	* db2/include/btree.h: Likewise.
	* db2/include/db.h.src: Likewise.
	* db2/include/db_int.h.src: Likewise.
	* db2/include/db_shash.h: Likewise.
	* db2/include/db_swap.h: Likewise.
	* db2/include/db_185.h.src: Likewise.
	* db2/include/txn.h: Likewise.
	* db2/include/db_am.h: Likewise.
	* db2/include/shqueue.h: Likewise.
	* db2/include/hash.h: Likewise.
	* db2/include/db_dispatch.h: Likewise.
	* db2/include/lock.h: Likewise.
	* db2/include/db_page.h: Likewise.
	* db2/include/log.h: Likewise.
	* db2/include/db_auto.h: Likewise.
	* db2/include/btree_auto.h: Likewise.
	* db2/include/hash_auto.h: Likewise.
	* db2/include/log_auto.h: Likewise.
	* db2/include/txn_auto.h: Likewise.
	* db2/include/db_ext.h: Likewise.
	* db2/include/btree_ext.h: Likewise.
	* db2/include/clib_ext.h: Likewise.
	* db2/include/common_ext.h: Likewise.
	* db2/include/hash_ext.h: Likewise.
	* db2/include/lock_ext.h: Likewise.
	* db2/include/log_ext.h: Likewise.
	* db2/include/mp_ext.h: Likewise.
	* db2/include/mutex_ext.h: Likewise.
	* db2/include/os_ext.h: Likewise.
	* db2/include/txn_ext.h: Likewise.
	* db2/include/cxx_int.h: Likewise.
	* db2/include/db_cxx.h: Likewise.
	* db2/include/queue.h: Likewise.
	* db2/lock/lock.c: Likewise.
	* db2/lock/lock_conflict.c: Likewise.
	* db2/lock/lock_util.c: Likewise.
	* db2/lock/lock_deadlock.c: Likewise.
	* db2/log/log.c: Likewise.
	* db2/log/log_get.c: Likewise.
	* db2/log/log.src: Likewise.
	* db2/log/log_compare.c: Likewise.
	* db2/log/log_put.c: Likewise.
	* db2/log/log_rec.c: Likewise.
	* db2/log/log_archive.c: Likewise.
	* db2/log/log_register.c: Likewise.
	* db2/log/log_auto.c: Likewise.
	* db2/log/log_findckp.c: Likewise.
	* db2/mp/mp_bh.c: Likewise.
	* db2/mp/mp_fget.c: Likewise.
	* db2/mp/mp_fopen.c: Likewise.
	* db2/mp/mp_fput.c: Likewise.
	* db2/mp/mp_fset.c: Likewise.
	* db2/mp/mp_open.c: Likewise.
	* db2/mp/mp_region.c: Likewise.
	* db2/mp/mp_pr.c: Likewise.
	* db2/mp/mp_sync.c: Likewise.
	* db2/mutex/68020.gcc: Likewise.
	* db2/mutex/mutex.c: Likewise.
	* db2/mutex/README: Likewise.
	* db2/mutex/x86.gcc: Likewise.
	* db2/mutex/sparc.gcc: Likewise.
	* db2/mutex/uts4.cc.s: Likewise.
	* db2/mutex/alpha.dec: Likewise.
	* db2/mutex/alpha.gcc: Likewise.
	* db2/mutex/parisc.gcc: Likewise.
	* db2/mutex/parisc.hp: Likewise.
	* db2/os/db_os_abs.c: Likewise.
	* db2/os/db_os_dir.c: Likewise.
	* db2/os/db_os_fid.c: Likewise.
	* db2/os/db_os_lseek.c: Likewise.
	* db2/os/db_os_mmap.c: Likewise.
	* db2/os/db_os_open.c: Likewise.
	* db2/os/db_os_rw.c: Likewise.
	* db2/os/db_os_sleep.c: Likewise.
	* db2/os/db_os_stat.c: Likewise.
	* db2/os/db_os_unlink.c: Likewise.
	* db2/txn/txn.c: Likewise.
	* db2/txn/txn.src: Likewise.
	* db2/txn/txn_rec.c: Likewise.
	* db2/txn/txn_auto.c: Likewise.
	* db2/clib/getlong.c: Likewise.
	* db2/progs/db_archive/db_archive.c: Likewise.
	* db2/progs/db_checkpoint/db_checkpoint.c: Likewise.
	* db2/progs/db_deadlock/db_deadlock.c: Likewise.
	* db2/progs/db_dump/db_dump.c: Likewise.
	* db2/progs/db_dump185/db_dump185.c: Likewise.
	* db2/progs/db_load/db_load.c: Likewise.
	* db2/progs/db_printlog/db_printlog.c: Likewise.
	* db2/progs/db_recover/db_recover.c: Likewise.
	* db2/progs/db_stat/db_stat.c: Likewise.

	* libio/stdio.h [__cplusplus] (__STDIO_INLINE): Define as inline.

	* po/de.po, po/sv.po: Update from 2.0.5 translations.

	* sysdeps/unix/sysv/linux/netinet/tcp.h: Pretty print.

	* sunrpc/rpc/xdr.h (XDR): Don't define argument of x_destroy callback
	as const.
	* sunrpc/xdr_mem.c (xdrmem_destroy): Don't define argument as const.
	* sunrpx/xdr_rec.c (xdrrec_destroy): Likewise.
	* sunrpx/xdr_stdio.c (xdrstdio_destroy): Likewise.

1997-08-27 18:47  Ulrich Drepper  <drepper@cygnus.com>

	* sysdeps/unix/sysv/linux/if_index.c: Include <errno.h>.
	Reported by Benjamin Kosnik <bkoz@cygnus.com>.

1997-08-27 02:27  Roland McGrath  <roland@baalperazim.frob.com>

	* abi-tags: New file.
	* csu/Makefile (distribute): Remove abi-tag.h.
	($(objpfx)abi-tag.h): New target.
	* Makefile (distribute): Add abi-tags.
	* sysdeps/unix/sysv/linux/abi-tag.h: File removed.
	* sysdeps/mach/hurd/abi-tag.h: File removed.
	* sysdeps/stub/abi-tag.h: File removed.

1997-08-25  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* sysdeps/unix/make-syscalls.sh: Change output so that it
	generates compilation rules only for the currently selected object
	suffixes.

1997-08-25  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* sysdeps/m68k/dl-machine.h (RTLD_START): Switch back to previous
	section to avoid confusing the compiler.
	* sysdeps/alpha/dl-machine.h (RTLD_START): Likewise.
	* sysdeps/i386/dl-machine.h (RTLD_START): Likewise.
	* sysdeps/mips/dl-machine.h (RTLD_START): Likewise.
	* sysdeps/mips/mips64/dl-machine.h (RTLD_START): Likewise.
	* sysdeps/sparc/sparc32/dl-machine.h (RTLD_START): Likewise.

	* sysdeps/m68k/dl-machine.h (elf_machine_load_address): Use a GOT
	relocation instead of a constant to avoid text relocation.
	(ELF_MACHINE_BEFORE_RTLD_RELOC): Removed.
	(RTLD_START): Declare global labels as functions and add size
	directive.

1997-08-25 17:01  Ulrich Drepper  <drepper@cygnus.com>

	* sysdeps/i386/bits/select.h: Correct assembler versions to work even
	for descriptors >= 32.

	* stdlib/alloca.h: Don't define alloca to __alloca since if gcc
	is used __alloca is not defined to __builtin_alloca and so might
	not be available.
	Reported by Uwe Ohse <uwe@ohse.de>.

	* sysdeps/unix/sysv/linux/sys/sysmacros.h: Define macros in a special
	way if gcc is not used and so dev_t is an array.
	Reported by Uwe Ohse <uwe@ohse.de>.

1997-08-23  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* manual/libc.texinfo: Reorder chapters to match logical order.

1997-08-25 12:22  Ulrich Drepper  <drepper@cygnus.com>

	* sunrpc/rpc/xdr.h: Change name of parameters in prototypes of
	xdr_reference, xdrmem_create, and xdrstdio_create because of clash
	with g++ internal symbols.
	Patch by Sudish Joseph <sj@eng.mindspring.net>.

	* elf/dl-deps.c: Implement handling of DT_FILTER.

1 files changed, 361 insertions, 0 deletions

diff --git a/db2/include/shqueue.h b/db2/include/shqueue.h
new file mode 100644
index 0000000000..c3e2f4aecc
--- /dev/null
+++ b/db2/include/shqueue.h
@@ -0,0 +1,361 @@
+/*
+ * 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. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. 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.
+ *
+ *	@(#)shqueue.h	8.11 (Sleepycat) 7/27/97
+ */
+
+#ifndef	_SYS_SHQUEUE_H_
+#define	_SYS_SHQUEUE_H_
+
+/*
+ * This file defines three types of data structures: lists, tail queues, and
+ * circular queues, similarly to the include file <sys/queue.h>.
+ *
+ * The difference is that this set of macros can be used for structures that
+ * reside in shared memory that may be mapped at different addresses in each
+ * process.  In most cases, the macros for shared structures exactly mirror
+ * the normal macros, although the macro calls require an additional type
+ * parameter, only used by the HEAD and ENTRY macros of the standard macros.
+ *
+ * For details on the use of these macros, see the queue(3) manual page.
+ */
+
+/*
+ * Shared list definitions.
+ */
+#define SH_LIST_HEAD(name)						\
+struct name {								\
+	ssize_t slh_first;	/* first element */			\
+}
+
+#define SH_LIST_ENTRY							\
+struct {								\
+	ssize_t sle_next;	/* relative offset next element */	\
+	ssize_t sle_prev;	/* relative offset of prev element */	\
+}
+
+/*
+ * Shared list functions.  Since we use relative offsets for pointers,
+ * 0 is a valid offset.  Therefore, we use -1 to indicate end of list.
+ * The macros ending in "P" return pointers without checking for end
+ * of list, the others check for end of list and evaluate to either a
+ * pointer or NULL.
+ */
+
+#define SH_LIST_FIRSTP(head, type)					\
+	((struct type *)(((u_int8_t *)(head)) + (head)->slh_first))
+
+#define SH_LIST_FIRST(head, type)					\
+	((head)->slh_first == -1 ? NULL :				\
+	((struct type *)(((u_int8_t *)(head)) + (head)->slh_first)))
+
+#define SH_LIST_NEXTP(elm, field, type)					\
+	((struct type *)(((u_int8_t *)(elm)) + (elm)->field.sle_next))
+
+#define SH_LIST_NEXT(elm, field, type)					\
+	((elm)->field.sle_next == -1 ? NULL : 				\
+	((struct type *)(((u_int8_t *)(elm)) + (elm)->field.sle_next)))
+
+#define SH_LIST_PREV(elm, field)					\
+	((ssize_t *)(((u_int8_t *)(elm)) + (elm)->field.sle_prev))
+
+#define SH_PTR_TO_OFF(src, dest)					\
+	((ssize_t)(((u_int8_t *)(dest)) - ((u_int8_t *)(src))))
+
+#define	SH_LIST_END(head)			NULL
+
+/*
+ * Take the element's next pointer and calculate what the corresponding
+ * Prev pointer should be -- basically it is the negation plus the offset
+ * of the next field in the structure.
+ */
+#define SH_LIST_NEXT_TO_PREV(elm, field)				\
+	(-(elm)->field.sle_next + SH_PTR_TO_OFF(elm, &(elm)->field.sle_next))
+
+#define	SH_LIST_INIT(head) (head)->slh_first = -1
+
+#define SH_LIST_INSERT_AFTER(listelm, elm, field, type) do {		\
+	if ((listelm)->field.sle_next != -1) {				\
+		(elm)->field.sle_next = SH_PTR_TO_OFF(elm,		\
+		    SH_LIST_NEXTP(listelm, field, type));		\
+		SH_LIST_NEXTP(listelm, field, type)->field.sle_prev = 	\
+			SH_LIST_NEXT_TO_PREV(elm, field);		\
+	} else 								\
+		(elm)->field.sle_next = -1;				\
+	(listelm)->field.sle_next = SH_PTR_TO_OFF(listelm, elm);	\
+	(elm)->field.sle_prev = SH_LIST_NEXT_TO_PREV(listelm, field);	\
+} while (0)
+
+#define SH_LIST_INSERT_HEAD(head, elm, field, type) do {		\
+	if ((head)->slh_first != -1) {					\
+		(elm)->field.sle_next = 				\
+		    (head)->slh_first - SH_PTR_TO_OFF(head, elm);	\
+		SH_LIST_FIRSTP(head, type)->field.sle_prev =		\
+			SH_LIST_NEXT_TO_PREV(elm, field);		\
+	} else								\
+		(elm)->field.sle_next = -1;				\
+	(head)->slh_first = SH_PTR_TO_OFF(head, elm);			\
+	(elm)->field.sle_prev = SH_PTR_TO_OFF(elm, &(head)->slh_first);	\
+} while (0)
+
+#define SH_LIST_REMOVE(elm, field, type) do {				\
+	if ((elm)->field.sle_next != -1) {				\
+		SH_LIST_NEXTP(elm, field, type)->field.sle_prev = 	\
+			(elm)->field.sle_prev - (elm)->field.sle_next;	\
+		*SH_LIST_PREV(elm, field) += (elm)->field.sle_next;	\
+	} else								\
+		*SH_LIST_PREV(elm, field) = -1;				\
+} while (0)
+
+/*
+ * Shared tail queue definitions.
+ */
+#define SH_TAILQ_HEAD(name)						\
+struct name {								\
+	ssize_t stqh_first; 	/* relative offset of first element */	\
+	ssize_t stqh_last;	/* relative offset of last's next */	\
+}
+
+#define SH_TAILQ_ENTRY							\
+struct {								\
+	ssize_t stqe_next;	/* relative offset of next element */	\
+	ssize_t stqe_prev;	/* relative offset of prev's next */	\
+}
+
+/*
+ * Shared tail queue functions.
+ */
+#define SH_TAILQ_FIRSTP(head, type)					\
+	((struct type *)((u_int8_t *)(head) + (head)->stqh_first))
+
+#define SH_TAILQ_FIRST(head, type)					\
+	((head)->stqh_first == -1 ? NULL : SH_TAILQ_FIRSTP(head, type))
+
+#define SH_TAILQ_NEXTP(elm, field, type)				\
+	((struct type *)((u_int8_t *)(elm) + (elm)->field.stqe_next))
+
+#define SH_TAILQ_NEXT(elm, field, type)					\
+	((elm)->field.stqe_next == -1 ? NULL : SH_TAILQ_NEXTP(elm, field, type))
+
+#define SH_TAILQ_PREVP(elm, field)					\
+	((ssize_t *)((u_int8_t *)(elm) + (elm)->field.stqe_prev))
+
+#define SH_TAILQ_LAST(head)						\
+	((ssize_t *)(((u_int8_t *)(head)) + (head)->stqh_last))
+
+#define SH_TAILQ_NEXT_TO_PREV(elm, field)				\
+	(-(elm)->field.stqe_next + SH_PTR_TO_OFF(elm, &(elm)->field.stqe_next))
+
+#define SH_TAILQ_END(head)		NULL
+
+#define	SH_TAILQ_INIT(head) {						\
+	(head)->stqh_first = -1;					\
+	(head)->stqh_last = SH_PTR_TO_OFF(head, &(head)->stqh_first);	\
+}
+
+#define SH_TAILQ_INSERT_HEAD(head, elm, field, type) do {		\
+	if ((head)->stqh_first != -1) {					\
+		(elm)->field.stqe_next =				\
+		    (head)->stqh_first - SH_PTR_TO_OFF(head, elm);	\
+		SH_TAILQ_FIRSTP(head, type)->field.stqe_prev =		\
+			SH_TAILQ_NEXT_TO_PREV(elm, field);		\
+	} else {							\
+		(elm)->field.stqe_next = -1;				\
+		(head)->stqh_last =					\
+		    SH_PTR_TO_OFF(head, &(elm)->field.stqe_next);	\
+	}								\
+	(head)->stqh_first = SH_PTR_TO_OFF(head, elm);			\
+	(elm)->field.stqe_prev =					\
+	    SH_PTR_TO_OFF(elm, &(head)->stqh_first);			\
+} while (0)
+
+#define SH_TAILQ_INSERT_TAIL(head, elm, field) do {			\
+	(elm)->field.stqe_next = -1;					\
+	(elm)->field.stqe_prev =					\
+	    -SH_PTR_TO_OFF(head, elm) + (head)->stqh_last;		\
+	if ((head)->stqh_last ==					\
+	    SH_PTR_TO_OFF((head), &(head)->stqh_first))			\
+		(head)->stqh_first = SH_PTR_TO_OFF(head, elm);		\
+	else								\
+		*SH_TAILQ_LAST(head) = -(head)->stqh_last +		\
+		    SH_PTR_TO_OFF((elm), &(elm)->field.stqe_next) +	\
+		    SH_PTR_TO_OFF(head, elm);				\
+	(head)->stqh_last = 						\
+	    SH_PTR_TO_OFF(head, &((elm)->field.stqe_next));		\
+} while (0)
+
+#define SH_TAILQ_INSERT_AFTER(head, listelm, elm, field, type) do {	\
+	if ((listelm)->field.stqe_next != -1) {				\
+		(elm)->field.stqe_next = (listelm)->field.stqe_next -	\
+		    SH_PTR_TO_OFF(listelm, elm);			\
+		SH_TAILQ_NEXTP(listelm, field, type)->field.stqe_prev =	\
+		    SH_TAILQ_NEXT_TO_PREV(elm, field);			\
+	} else {							\
+		(elm)->field.stqe_next = -1;				\
+		(head)->stqh_last =					\
+		    SH_PTR_TO_OFF(head, &elm->field.stqe_next);		\
+	}								\
+	(listelm)->field.stqe_next = SH_PTR_TO_OFF(listelm, elm);	\
+	(elm)->field.stqe_prev = SH_TAILQ_NEXT_TO_PREV(listelm, field);	\
+} while (0)
+
+#define SH_TAILQ_REMOVE(head, elm, field, type) do {			\
+	if ((elm)->field.stqe_next != -1) {				\
+		SH_TAILQ_NEXTP(elm, field, type)->field.stqe_prev = 	\
+		    (elm)->field.stqe_prev +				\
+		    SH_PTR_TO_OFF(SH_TAILQ_NEXTP(elm,			\
+		    field, type), elm);					\
+		*SH_TAILQ_PREVP(elm, field) += elm->field.stqe_next;	\
+	} else {							\
+		(head)->stqh_last = (elm)->field.stqe_prev +		\
+			SH_PTR_TO_OFF(head, elm);			\
+		*SH_TAILQ_PREVP(elm, field) = -1;			\
+	}								\
+} while (0)
+
+/*
+ * Shared circular queue definitions.
+ */
+#define SH_CIRCLEQ_HEAD(name)						\
+struct name {								\
+	ssize_t scqh_first;		/* first element */		\
+	ssize_t scqh_last;		/* last element */		\
+}
+
+#define SH_CIRCLEQ_ENTRY						\
+struct {								\
+	ssize_t scqe_next;		/* next element */		\
+	ssize_t scqe_prev;		/* previous element */		\
+}
+
+/*
+ * Shared circular queue functions.
+ */
+#define SH_CIRCLEQ_FIRSTP(head, type)					\
+	((struct type *)(((u_int8_t *)(head)) + (head)->scqh_first))
+
+#define SH_CIRCLEQ_FIRST(head, type)					\
+	((head)->scqh_first == -1 ? 					\
+	(void *)head : SH_CIRCLEQ_FIRSTP(head, type))
+
+#define SH_CIRCLEQ_LASTP(head, type)					\
+	((struct type *)(((u_int8_t *)(head)) + (head)->scqh_last))
+
+#define SH_CIRCLEQ_LAST(head, type)					\
+	((head)->scqh_last == -1 ? (void *)head : SH_CIRCLEQ_LASTP(head, type))
+
+#define SH_CIRCLEQ_NEXTP(elm, field, type)				\
+	((struct type *)(((u_int8_t *)(elm)) + (elm)->field.scqe_next))
+
+#define SH_CIRCLEQ_NEXT(head, elm, field, type)				\
+	((elm)->field.scqe_next == SH_PTR_TO_OFF(elm, head) ?		\
+	    (void *)head : SH_CIRCLEQ_NEXTP(elm, field, type))
+
+#define SH_CIRCLEQ_PREVP(elm, field, type)				\
+	((struct type *)(((u_int8_t *)(elm)) + (elm)->field.scqe_prev))
+
+#define SH_CIRCLEQ_PREV(head, elm, field, type)				\
+	((elm)->field.scqe_prev == SH_PTR_TO_OFF(elm, head) ?		\
+	    (void *)head : SH_CIRCLEQ_PREVP(elm, field, type))
+
+#define	SH_CIRCLEQ_END(head)		((void *)(head))
+
+#define	SH_CIRCLEQ_INIT(head) {						\
+	(head)->scqh_first = 0;						\
+	(head)->scqh_last = 0;						\
+}
+
+#define SH_CIRCLEQ_INSERT_AFTER(head, listelm, elm, field, type) do {	\
+	(elm)->field.scqe_prev = SH_PTR_TO_OFF(elm, listelm);		\
+	(elm)->field.scqe_next = (listelm)->field.scqe_next +		\
+	    (elm)->field.scqe_prev;					\
+	if (SH_CIRCLEQ_NEXTP(listelm, field, type) == (void *)head)	\
+		(head)->scqh_last = SH_PTR_TO_OFF(head, elm);		\
+	else								\
+		SH_CIRCLEQ_NEXTP(listelm,				\
+		    field, type)->field.scqe_prev =			\
+		    SH_PTR_TO_OFF(SH_CIRCLEQ_NEXTP(listelm,		\
+		    field, type), elm);					\
+	(listelm)->field.scqe_next = -(elm)->field.scqe_prev;		\
+} while (0)
+
+#define SH_CIRCLEQ_INSERT_BEFORE(head, listelm, elm, field, type) do {	\
+	(elm)->field.scqe_next = SH_PTR_TO_OFF(elm, listelm);		\
+	(elm)->field.scqe_prev = (elm)->field.scqe_next -		\
+		SH_CIRCLEQ_PREVP(listelm, field, type)->field.scqe_next;\
+	if (SH_CIRCLEQ_PREVP(listelm, field, type) == (void *)(head))	\
+		(head)->scqh_first = SH_PTR_TO_OFF(head, elm);		\
+	else								\
+		SH_CIRCLEQ_PREVP(listelm,				\
+		    field, type)->field.scqe_next =			\
+		    SH_PTR_TO_OFF(SH_CIRCLEQ_PREVP(listelm,		\
+		    field, type), elm);					\
+	(listelm)->field.scqe_prev = -(elm)->field.scqe_next;		\
+} while (0)
+
+#define SH_CIRCLEQ_INSERT_HEAD(head, elm, field, type) do {		\
+	(elm)->field.scqe_prev = SH_PTR_TO_OFF(elm, head);		\
+	(elm)->field.scqe_next = (head)->scqh_first +			\
+		(elm)->field.scqe_prev;					\
+	if ((head)->scqh_last == 0)					\
+		(head)->scqh_last = -(elm)->field.scqe_prev;		\
+	else								\
+		SH_CIRCLEQ_FIRSTP(head, type)->field.scqe_prev =	\
+		    SH_PTR_TO_OFF(SH_CIRCLEQ_FIRSTP(head, type), elm);	\
+	(head)->scqh_first = -(elm)->field.scqe_prev;			\
+} while (0)
+
+#define SH_CIRCLEQ_INSERT_TAIL(head, elm, field, type) do {		\
+	(elm)->field.scqe_next = SH_PTR_TO_OFF(elm, head);		\
+	(elm)->field.scqe_prev = (head)->scqh_last +			\
+	    (elm)->field.scqe_next;					\
+	if ((head)->scqh_first == 0)					\
+		(head)->scqh_first = -(elm)->field.scqe_next;		\
+	else								\
+		SH_CIRCLEQ_LASTP(head, type)->field.scqe_next = 	\
+		    SH_PTR_TO_OFF(SH_CIRCLEQ_LASTP(head, type), elm);	\
+	(head)->scqh_last = -(elm)->field.scqe_next;			\
+} while (0)
+
+#define	SH_CIRCLEQ_REMOVE(head, elm, field, type) do {			\
+	if (SH_CIRCLEQ_NEXTP(elm, field, type) == (void *)(head))	\
+		(head)->scqh_last += (elm)->field.scqe_prev;		\
+	else								\
+		SH_CIRCLEQ_NEXTP(elm, field, type)->field.scqe_prev +=	\
+		    (elm)->field.scqe_prev;				\
+	if (SH_CIRCLEQ_PREVP(elm, field, type) == (void *)(head))	\
+		(head)->scqh_first += (elm)->field.scqe_next;		\
+	else								\
+		SH_CIRCLEQ_PREVP(elm, field, type)->field.scqe_next +=	\
+		    (elm)->field.scqe_next;				\
+} while (0)
+#endif	/* !_SYS_SHQUEUE_H_ */