Update.

1998-06-09  Ulrich Drepper  <drepper@cygnus.com>

	* sysdeps/unix/sysv/linux/netinet/ip.h (struct ip_options): Define
	__data member only for gcc.  Reported by ak@muc.de.

	* misc/mntent.h: Undo last patch.
	* sysdeps/unix/sysv/linux/fstatvfs.c (fstatvfs): Undo last patch.
	* misc/tst/mntent.c: Adjust code for this change.

	* io/fts.c: Updated from a slightly more recent BSD version.
	* io/fts.h: Likewise.

	* libc.map: Add __libc_stack_end.

	* db2/Makefile (routines): Add lock_region.
	* db2/config.h: Update from db-2.4.14.
	* db2/db.h: Likewise.
	* db2/db_185.h: Likewise.
	* db2/db_int.h: Likewise.
	* db2/bt_close.c: Likewise.
	* db2/bt_compare.c: Likewise.
	* db2/bt_conv.c: Likewise.
	* db2/bt_cursor.c: Likewise.
	* db2/bt_delete.c: Likewise.
	* db2/bt_open.c: Likewise.
	* db2/bt_page.c: Likewise.
	* db2/bt_put.c: Likewise.
	* db2/bt_rec.c: Likewise.
	* db2/bt_recno.c: Likewise.
	* db2/bt_rsearch.c: Likewise.
	* db2/bt_search.c: Likewise.
	* db2/bt_split.c: Likewise.
	* db2/bt_stat.c: Likewise.
	* db2/btree.src: Likewise.
	* db2/btree_auto.c: Likewise.
	* db2/getlong.c: Likewise.
	* db2/db_appinit.c: Likewise.
	* db2/db_apprec.c: Likewise.
	* db2/db_byteorder.c: Likewise.
	* db2/db_err.c: Likewise.
	* db2/db_log2.c: Likewise.
	* db2/db_region.c: Likewise.
	* db2/db_salloc.c: Likewise.
	* db2/db_shash.c: Likewise.
	* db2/db.c: Likewise.
	* db2/db.src: Likewise.
	* db2/db_auto.c: Likewise.
	* db2/db_conv.c: Likewise.
	* db2/db_dispatch.c: Likewise.
	* db2/db_dup.c: Likewise.
	* db2/db_overflow.c: Likewise.
	* db2/db_pr.c: Likewise.
	* db2/db_rec.c: Likewise.
	* db2/db_ret.c: Likewise.
	* db2/db_thread.c: Likewise.
	* db2/db185.c: Likewise.
	* db2/db185_int.h: Likewise.
	* db2/dbm.c: Likewise.
	* db2/hash.c: Likewise.
	* db2/hash.src: Likewise.
	* db2/hash_auto.c: Likewise.
	* db2/hash_conv.c: Likewise.
	* db2/hash_debug.c: Likewise.
	* db2/hash_dup.c: Likewise.
	* db2/hash_func.c: Likewise.
	* db2/hash_page.c: Likewise.
	* db2/hash_rec.c: Likewise.
	* db2/hash_stat.c: Likewise.
	* db2/btree.h: Likewise.
	* db2/btree_ext.h: Likewise.
	* db2/clib_ext.h: Likewise.
	* db2/common_ext.h: Likewise.
	* db2/cxx_int.h: Likewise.
	* db2/db.h.src: Likewise.
	* db2/db_185.h.src: Likewise.
	* db2/db_am.h: Likewise.
	* db2/db_auto.h: Likewise.
	* db2/db_cxx.h: Likewise.
	* db2/db_dispatch.h: Likewise.
	* db2/db_ext.h: Likewise.
	* db2/db_int.h.src: Likewise.
	* db2/db_page.h: Likewise.
	* db2/db_shash.h: Likewise.
	* db2/db_swap.h: Likewise.
	* db2/hash.h: Likewise.
	* db2/hash_ext.h: Likewise.
	* db2/lock.h: Likewise.
	* db2/lock_ext.h: Likewise.
	* db2/log.h: Likewise.
	* db2/log_ext.h: Likewise.
	* db2/mp.h: Likewise.
	* db2/mp_ext.h: Likewise.
	* db2/mutex_ext.h: Likewise.
	* db2/os_ext.h: Likewise.
	* db2/os_func.h: Likewise.
	* db2/queue.h: Likewise.
	* db2/shqueue.h: Likewise.
	* db2/txn.h: Likewise.
	* db2/lock.c: Likewise.
	* db2/lock_conflict.c: Likewise.
	* db2/lock_deadlock.c: Likewise.
	* db2/lock_region.c: Likewise.
	* db2/lock_util.c: Likewise.
	* db2/log.c: Likewise.
	* db2/log.src: Likewise.
	* db2/log_archive.c: Likewise.
	* db2/log_auto.c: Likewise.
	* db2/log_compare.c: Likewise.
	* db2/log_findckp.c: Likewise.
	* db2/log_get.c: Likewise.
	* db2/log_put.c: Likewise.
	* db2/log_rec.c: Likewise.
	* db2/log_register.c: Likewise.
	* db2/mp_bh.c: Likewise.
	* db2/mp_fget.c: Likewise.
	* db2/mp_fopen.c: Likewise.
	* db2/mp_fput.c: Likewise.
	* db2/mp_fset.c: Likewise.
	* db2/mp_open.c: Likewise.
	* db2/mp_pr.c: Likewise.
	* db2/mp_region.c: Likewise.
	* db2/mp_sync.c: Likewise.
	* db2/68020.gcc: Likewise.
	* db2/mutex.c: Likewise.
	* db2/parisc.gcc: Likewise.
	* db2/parisc.hp: Likewise.
	* db2/sco.cc: Likewise.
	* db2/os_abs.c: Likewise.
	* db2/os_alloc.c: Likewise.
	* db2/os_config.c: Likewise.
	* db2/os_dir.c: Likewise.
	* db2/os_fid.c: Likewise.
	* db2/os_fsync.c: Likewise.
	* db2/os_map.c: Likewise.
	* db2/os_oflags.c: Likewise.
	* db2/os_open.c: Likewise.
	* db2/os_rpath.c: Likewise.
	* db2/os_rw.c: Likewise.
	* db2/os_seek.c: Likewise.
	* db2/os_sleep.c: Likewise.
	* db2/os_spin.c: Likewise.
	* db2/os_stat.c: Likewise.
	* db2/os_unlink.c: Likewise.
	* db2/db_archive.c: Likewise.
	* db2/db_checkpoint.c: Likewise.
	* db2/db_deadlock.c: Likewise.
	* db2/db_dump.c: Likewise.
	* db2/db_dump185.c: Likewise.
	* db2/db_load.c: Likewise.
	* db2/db_printlog.c: Likewise.
	* db2/db_recover.c: Likewise.
	* db2/db_stat.c: Likewise.
	* db2/txn.c: Likewise.
	* db2/txn.src: Likewise.
	* db2/txn_auto.c: Likewise.
	* db2/txn_rec.c: Likewise.

	* elf/rtld.c: Move definition of __libc_stack_end to ...
	* sysdeps/generic/dl-sysdep.h: ...here.

	* sysdeps/unix/sysv/linux/fstatvfs.c: Handle nodiratime option.
	* sysdeps/unix/sysv/linux/bits/statvfs.h: Define ST_NODIRATIME.
	* sysdeps/unix/sysv/linux/sys/mount.h: Define MS_NODIRATIME.

1998-06-08 21:44  Ulrich Drepper  <drepper@cygnus.com>

	* sysdeps/unix/sysv/linux/fstatvfs.c: Handle constant option string
	from mntent correctly.

1998-06-06  Andreas Jaeger  <aj@arthur.rhein-neckar.de>

	* sunrpc/Makefile (generated): Correct typo.

1998-06-04  Philip Blundell  <philb@gnu.org>

	* elf/elf.h (EM_ARM, et al.): New definitions.
	* sysdeps/arm/dl-machine.h: Update for new draft ARM ELF ABI.

16 files changed, 664 insertions, 148 deletions

diff --git a/db2/os/os_abs.c b/db2/os/os_abs.c
index 872e46d..d9f4970 100644
--- a/db2/os/os_abs.c
+++ b/db2/os/os_abs.c
@@ -1,14 +1,14 @@
 /*-
  * See the file LICENSE for redistribution information.
  *
- * Copyright (c) 1997
+ * Copyright (c) 1997, 1998
  *	Sleepycat Software.  All rights reserved.
  */
 
 #include "config.h"
 
 #ifndef lint
-static const char sccsid[] = "@(#)os_abs.c	10.7 (Sleepycat) 10/24/97";
+static const char sccsid[] = "@(#)os_abs.c	10.8 (Sleepycat) 4/10/98";
 #endif /* not lint */
 
 #ifndef NO_SYSTEM_INCLUDES
diff --git a/db2/os/os_alloc.c b/db2/os/os_alloc.c
index 27abffb..3578447 100644
--- a/db2/os/os_alloc.c
+++ b/db2/os/os_alloc.c
@@ -1,26 +1,46 @@
 /*-
  * See the file LICENSE for redistribution information.
  *
- * Copyright (c) 1997
+ * Copyright (c) 1997, 1998
  *	Sleepycat Software.  All rights reserved.
  */
 
 #include "config.h"
 
 #ifndef lint
-static const char sccsid[] = "@(#)os_alloc.c	10.1 (Sleepycat) 12/1/97";
+static const char sccsid[] = "@(#)os_alloc.c	10.6 (Sleepycat) 5/2/98";
 #endif /* not lint */
 
 #ifndef NO_SYSTEM_INCLUDES
 #include <sys/types.h>
 
-#include <errno.h>
 #include <string.h>
 #endif
 
 #include "db_int.h"
 
 /*
+ * __db_strdup --
+ *	The strdup(3) function for DB.
+ *
+ * PUBLIC: char *__db_strdup __P((const char *));
+ */
+char *
+__db_strdup(str)
+	const char *str;
+{
+	size_t len;
+	char *copy;
+
+	len = strlen(str) + 1;
+	if ((copy = __db_malloc(len)) == NULL)
+		return (NULL);
+
+	memcpy(copy, str, len);
+	return (copy);
+}
+
+/*
  * XXX
  * Correct for systems that return NULL when you allocate 0 bytes of memory.
  * There are several places in DB where we allocate the number of bytes held
@@ -28,6 +48,10 @@ static const char sccsid[] = "@(#)os_alloc.c	10.1 (Sleepycat) 12/1/97";
  * returns a NULL for that reason (which behavior is permitted by ANSI).  We
  * could make these calls macros on non-Alpha architectures (that's where we
  * saw the problem), but it's probably not worth the autoconf complexity.
+ *
+ *	Out of memory.
+ *	We wish to hold the whole sky,
+ *	But we never will.
  */
 /*
  * __db_calloc --
@@ -42,7 +66,7 @@ __db_calloc(num, size)
 	void *p;
 
 	size *= num;
-	if ((p = __db_jump.db_malloc(size == 0 ? 1 : size)) != NULL)
+	if ((p = __db_jump.j_malloc(size == 0 ? 1 : size)) != NULL)
 		memset(p, 0, size);
 	return (p);
 }
@@ -57,7 +81,15 @@ void *
 __db_malloc(size)
 	size_t size;
 {
-	return (__db_jump.db_malloc(size == 0 ? 1 : size));
+#ifdef DIAGNOSTIC
+	void *p;
+
+	p = __db_jump.j_malloc(size == 0 ? 1 : size);
+	memset(p, 0xff, size == 0 ? 1 : size);
+	return (p);
+#else
+	return (__db_jump.j_malloc(size == 0 ? 1 : size));
+#endif
 }
 
 /*
@@ -71,5 +103,5 @@ __db_realloc(ptr, size)
 	void *ptr;
 	size_t size;
 {
-	return (__db_jump.db_realloc(ptr, size == 0 ? 1 : size));
+	return (__db_jump.j_realloc(ptr, size == 0 ? 1 : size));
 }
diff --git a/db2/os/os_config.c b/db2/os/os_config.c
index 7a89ba5..4150c84 100644
--- a/db2/os/os_config.c
+++ b/db2/os/os_config.c
@@ -1,14 +1,14 @@
 /*-
  * See the file LICENSE for redistribution information.
  *
- * Copyright (c) 1997
+ * Copyright (c) 1997, 1998
  *	Sleepycat Software.  All rights reserved.
  */
 
 #include "config.h"
 
 #ifndef lint
-static const char sccsid[] = "@(#)os_config.c	10.12 (Sleepycat) 1/8/98";
+static const char sccsid[] = "@(#)os_config.c	10.26 (Sleepycat) 5/23/98";
 #endif /* not lint */
 
 #ifndef NO_SYSTEM_INCLUDES
@@ -20,22 +20,6 @@ static const char sccsid[] = "@(#)os_config.c	10.12 (Sleepycat) 1/8/98";
 #include "db_int.h"
 
 /*
- * __os_oldwin --
- *	Return if Windows 95 (as opposed to Windows NT).
- *
- * PUBLIC: int __os_oldwin __P((void));
- */
-int
-__os_oldwin()
-{
-#ifdef _WIN32
-	return ((GetVersion() & 0x80000000) != 0);
-#else
-	return (0);
-#endif
-}
-
-/*
  * XXX
  * We provide our own extern declarations so that we don't collide with
  * systems that get them wrong, e.g., SunOS.
@@ -47,13 +31,20 @@ __os_oldwin()
 #define imported
 #endif
 
+/*
+ * XXX
+ * HP/UX MPE doesn't have fsync, but you can build one using FCONTROL.
+ */
+#ifdef __hp3000s900
+#define	fsync	__mpe_fsync
+#endif
+
 imported extern int	 close __P((int));
 imported extern void	 free __P((void *));
 imported extern int	 fsync __P((int));
 imported extern void    *malloc __P((size_t));
 imported extern int	 open __P((const char *, int, ...));
 imported extern ssize_t	 read __P((int, void *, size_t));
-imported extern char	*strdup __P((const char *));
 imported extern void    *realloc __P((void *, size_t));
 imported extern int	 unlink __P((const char *));
 imported extern ssize_t	 write __P((int, const void *, size_t));
@@ -63,7 +54,7 @@ imported extern ssize_t	 write __P((int, const void *, size_t));
  *	This list of interfaces that applications can replace.  In some
  *	cases, the user is permitted to replace the standard ANSI C or
  *	POSIX 1003.1 call, e.g., malloc or read.  In others, we provide
- *	a local interface to the functionality, e.g., __os_map.
+ *	a local interface to the functionality, e.g., __os_ioinfo.
  */
 struct __db_jumptab __db_jump = {
 	close,				/* DB_FUNC_CLOSE */
@@ -74,20 +65,26 @@ struct __db_jumptab __db_jump = {
 	fsync,				/* DB_FUNC_FSYNC */
 	__os_ioinfo,			/* DB_FUNC_IOINFO */
 	malloc,				/* DB_FUNC_MALLOC */
-	__os_map,			/* DB_FUNC_MAP */
+	NULL,				/* DB_FUNC_MAP */
 	open,				/* DB_FUNC_OPEN */
 	read,				/* DB_FUNC_READ */
 	realloc,			/* DB_FUNC_REALLOC */
+	NULL,				/* DB_FUNC_RUNLINK */
 	__os_seek,			/* DB_FUNC_SEEK */
 	__os_sleep,			/* DB_FUNC_SLEEP */
-	strdup,				/* DB_FUNC_STRDUP */
 	unlink,				/* DB_FUNC_UNLINK */
-	__os_unmap,			/* DB_FUNC_UNMAP */
+	NULL,				/* DB_FUNC_UNMAP */
 	write,				/* DB_FUNC_WRITE */
 	NULL				/* DB_FUNC_YIELD */
 };
 
-int __db_tsl_spins;			/* DB_TSL_SPINS */
+DB_GLOBALS __db_global_values = {
+	1,				/* DB_MUTEXLOCKS */
+	0,				/* DB_REGION_ANON, DB_REGION_NAME */
+	0,				/* DB_REGION_INIT */
+	0,				/* DB_TSL_SPINS */
+	0				/* DB_PAGEYIELD */
+};
 
 /*
  * db_jump_set --
@@ -99,74 +96,68 @@ db_jump_set(func, which)
 	int which;
 {
 	switch (which) {
-	case DB_FUNC_CALLOC:
-		/*
-		 * XXX
-		 * Obsolete, calloc is no longer called by DB.
-		 */
-		 break;
 	case DB_FUNC_CLOSE:
-		__db_jump.db_close = (int (*) __P((int)))func;
+		__db_jump.j_close = (int (*) __P((int)))func;
 		break;
 	case DB_FUNC_DIRFREE:
-		__db_jump.db_dirfree = (void (*) __P((char **, int)))func;
+		__db_jump.j_dirfree = (void (*) __P((char **, int)))func;
 		break;
 	case DB_FUNC_DIRLIST:
-		__db_jump.db_dirlist =
+		__db_jump.j_dirlist =
 		    (int (*) __P((const char *, char ***, int *)))func;
 		break;
 	case DB_FUNC_EXISTS:
-		__db_jump.db_exists = (int (*) __P((const char *, int *)))func;
+		__db_jump.j_exists = (int (*) __P((const char *, int *)))func;
 		break;
 	case DB_FUNC_FREE:
-		__db_jump.db_free = (void (*) __P((void *)))func;
+		__db_jump.j_free = (void (*) __P((void *)))func;
 		break;
 	case DB_FUNC_FSYNC:
-		__db_jump.db_fsync = (int (*) __P((int)))func;
+		__db_jump.j_fsync = (int (*) __P((int)))func;
 		break;
 	case DB_FUNC_IOINFO:
-		__db_jump.db_ioinfo = (int (*) __P((const char *,
+		__db_jump.j_ioinfo = (int (*) __P((const char *,
 		    int, u_int32_t *, u_int32_t *, u_int32_t *)))func;
 		break;
 	case DB_FUNC_MALLOC:
-		__db_jump.db_malloc = (void *(*) __P((size_t)))func;
+		__db_jump.j_malloc = (void *(*) __P((size_t)))func;
 		break;
 	case DB_FUNC_MAP:
-		__db_jump.db_map =
-		    (int (*) __P((int, size_t, int, int, void **)))func;
+		__db_jump.j_map = (int (*)
+		    __P((char *, int, size_t, int, int, int, void **)))func;
 		break;
 	case DB_FUNC_OPEN:
-		__db_jump.db_open = (int (*) __P((const char *, int, ...)))func;
+		__db_jump.j_open = (int (*) __P((const char *, int, ...)))func;
 		break;
 	case DB_FUNC_READ:
-		__db_jump.db_read =
+		__db_jump.j_read =
 		    (ssize_t (*) __P((int, void *, size_t)))func;
 		break;
 	case DB_FUNC_REALLOC:
-		__db_jump.db_realloc = (void *(*) __P((void *, size_t)))func;
+		__db_jump.j_realloc = (void *(*) __P((void *, size_t)))func;
+		break;
+	case DB_FUNC_RUNLINK:
+		__db_jump.j_runlink = (int (*) __P((char *)))func;
 		break;
 	case DB_FUNC_SEEK:
-		__db_jump.db_seek =
-		    (int (*) __P((int, size_t, db_pgno_t, u_long, int)))func;
+		__db_jump.j_seek = (int (*)
+		    __P((int, size_t, db_pgno_t, u_int32_t, int, int)))func;
 		break;
 	case DB_FUNC_SLEEP:
-		__db_jump.db_sleep = (int (*) __P((u_long, u_long)))func;
-		break;
-	case DB_FUNC_STRDUP:
-		__db_jump.db_strdup = (char *(*) __P((const char *)))func;
+		__db_jump.j_sleep = (int (*) __P((u_long, u_long)))func;
 		break;
 	case DB_FUNC_UNLINK:
-		__db_jump.db_unlink = (int (*) __P((const char *)))func;
+		__db_jump.j_unlink = (int (*) __P((const char *)))func;
 		break;
 	case DB_FUNC_UNMAP:
-		__db_jump.db_unmap = (int (*) __P((void *, size_t)))func;
+		__db_jump.j_unmap = (int (*) __P((void *, size_t)))func;
 		break;
 	case DB_FUNC_WRITE:
-		__db_jump.db_write =
+		__db_jump.j_write =
 		    (ssize_t (*) __P((int, const void *, size_t)))func;
 		break;
 	case DB_FUNC_YIELD:
-		__db_jump.db_yield = (int (*) __P((void)))func;
+		__db_jump.j_yield = (int (*) __P((void)))func;
 		break;
 	default:
 		return (EINVAL);
@@ -182,11 +173,32 @@ int
 db_value_set(value, which)
 	int value, which;
 {
+	int ret;
+
 	switch (which) {
+	case DB_MUTEXLOCKS:
+		DB_GLOBAL(db_mutexlocks) = value;
+		break;
+	case DB_PAGEYIELD:
+		DB_GLOBAL(db_pageyield) = value;
+		break;
+	case DB_REGION_ANON:
+		if (value != 0 && (ret = __db_mapanon_ok(0)) != 0)
+			return (ret);
+		DB_GLOBAL(db_region_anon) = value;
+		break;
+	case DB_REGION_INIT:
+		DB_GLOBAL(db_region_init) = value;
+		break;
+	case DB_REGION_NAME:
+		if (value != 0 && (ret = __db_mapanon_ok(1)) != 0)
+			return (ret);
+		DB_GLOBAL(db_region_anon) = value;
+		break;
 	case DB_TSL_SPINS:
 		if (value <= 0)
 			return (EINVAL);
-		__db_tsl_spins = value;
+		DB_GLOBAL(db_tsl_spins) = value;
 		break;
 	default:
 		return (EINVAL);
diff --git a/db2/os/os_dir.c b/db2/os/os_dir.c
index 10fb8b6..14a10ad 100644
--- a/db2/os/os_dir.c
+++ b/db2/os/os_dir.c
@@ -1,14 +1,14 @@
 /*-
  * See the file LICENSE for redistribution information.
  *
- * Copyright (c) 1997
+ * Copyright (c) 1997, 1998
  *	Sleepycat Software.  All rights reserved.
  */
 
 #include "config.h"
 
 #ifndef lint
-static const char sccsid[] = "@(#)os_dir.c	10.13 (Sleepycat) 10/28/97";
+static const char sccsid[] = "@(#)os_dir.c	10.15 (Sleepycat) 4/26/98";
 #endif /* not lint */
 
 #ifndef NO_SYSTEM_INCLUDES
@@ -32,13 +32,9 @@ static const char sccsid[] = "@(#)os_dir.c	10.13 (Sleepycat) 10/28/97";
 #endif
 
 #include <errno.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
 #endif
 
 #include "db_int.h"
-#include "common_ext.h"
 
 /*
  * __os_dirlist --
diff --git a/db2/os/os_fid.c b/db2/os/os_fid.c
index 6820b88..cf48c01 100644
--- a/db2/os/os_fid.c
+++ b/db2/os/os_fid.c
@@ -1,14 +1,14 @@
 /*-
  * See the file LICENSE for redistribution information.
  *
- * Copyright (c) 1996, 1997
+ * Copyright (c) 1996, 1997, 1998
  *	Sleepycat Software.  All rights reserved.
  */
 
 #include "config.h"
 
 #ifndef lint
-static const char sccsid[] = "@(#)os_fid.c	10.9 (Sleepycat) 10/24/97";
+static const char sccsid[] = "@(#)os_fid.c	10.11 (Sleepycat) 4/26/98";
 #endif /* not lint */
 
 #ifndef NO_SYSTEM_INCLUDES
@@ -16,7 +16,6 @@ static const char sccsid[] = "@(#)os_fid.c	10.9 (Sleepycat) 10/24/97";
 #include <sys/stat.h>
 
 #include <errno.h>
-#include <stdlib.h>
 #include <string.h>
 #include <time.h>
 #endif
diff --git a/db2/os/os_fsync.c b/db2/os/os_fsync.c
index 7b001ce..e1f271a 100644
--- a/db2/os/os_fsync.c
+++ b/db2/os/os_fsync.c
@@ -1,14 +1,14 @@
 /*-
  * See the file LICENSE for redistribution information.
  *
- * Copyright (c) 1997
+ * Copyright (c) 1997, 1998
  *	Sleepycat Software.  All rights reserved.
  */
 
 #include "config.h"
 
 #ifndef lint
-static const char sccsid[] = "@(#)os_fsync.c	10.3 (Sleepycat) 10/25/97";
+static const char sccsid[] = "@(#)os_fsync.c	10.5 (Sleepycat) 4/19/98";
 #endif /* not lint */
 
 #ifndef NO_SYSTEM_INCLUDES
@@ -32,3 +32,18 @@ __db_fsync(fd)
 {
 	return (__os_fsync(fd) ? errno : 0);
 }
+
+#ifdef __hp3000s900
+#include <fcntl.h>
+
+int
+__mpe_fsync(fd)
+	int fd;
+{
+	extern FCONTROL(short, short, void *);
+
+	FCONTROL(_MPE_FILENO(fd), 2, NULL);	/* Flush the buffers */
+	FCONTROL(_MPE_FILENO(fd), 6, NULL);	/* Write the EOF */
+	return (0);
+}
+#endif
diff --git a/db2/os/os_map.c b/db2/os/os_map.c
index b155318..5f0fd79 100644
--- a/db2/os/os_map.c
+++ b/db2/os/os_map.c
@@ -1,47 +1,395 @@
 /*-
  * See the file LICENSE for redistribution information.
  *
- * Copyright (c) 1996, 1997
+ * Copyright (c) 1996, 1997, 1998
  *	Sleepycat Software.  All rights reserved.
  */
 
 #include "config.h"
 
 #ifndef lint
-static const char sccsid[] = "@(#)os_map.c	10.7 (Sleepycat) 10/25/97";
+static const char sccsid[] = "@(#)os_map.c	10.19 (Sleepycat) 5/3/98";
 #endif /* not lint */
 
 #ifndef NO_SYSTEM_INCLUDES
 #include <sys/types.h>
+#ifdef HAVE_MMAP
 #include <sys/mman.h>
+#endif
+
+#ifdef HAVE_SHMGET
+#include <sys/ipc.h>
+#include <sys/shm.h>
+#endif
 
 #include <errno.h>
+#include <string.h>
 #endif
 
 #include "db_int.h"
+#include "common_ext.h"
+
+#ifdef HAVE_MMAP
+static int __os_map __P((char *, int, size_t, int, int, int, void **));
+#endif
+#ifdef HAVE_SHMGET
+static int __os_shmget __P((char *, REGINFO *));
+#endif
 
 /*
- * __os_map --
- *	Map in some shared memory backed by a file descriptor.
+ * __db_mapanon_ok --
+ *	Return if this OS can support anonymous memory regions.
+ *
+ * PUBLIC: int __db_mapanon_ok __P((int));
+ */
+int
+__db_mapanon_ok(need_names)
+	int need_names;
+{
+	int ret;
+
+	ret = EINVAL;
+
+	/*
+	 * If we don't have spinlocks, we have to have a file descriptor
+	 * for fcntl(2) locking, which implies using mmap(2) to map in a
+	 * regular file.  Theoretically, we could probably find ways to
+	 * get a file descriptor to lock other types of shared regions,
+	 * but I don't see any reason to do so.
+	 *
+	 * If need_names is set, the application wants to share anonymous
+	 * memory among multiple processes, so we have to have a way to
+	 * name it.  This requires shmget(2), on UNIX systems.
+	 */
+#ifdef HAVE_SPINLOCKS
+#ifdef HAVE_SHMGET
+	ret = 0;
+#endif
+#ifdef HAVE_MMAP
+#ifdef MAP_ANON
+	if (!need_names)
+		ret = 0;
+#endif
+#ifdef MAP_ANONYMOUS
+	if (!need_names)
+		ret = 0;
+#endif
+#else
+	COMPQUIET(need_names, 0);
+#endif /* HAVE_MMAP */
+#endif /* HAVE_SPINLOCKS */
+
+	return (ret);
+}
+
+/*
+ * __db_mapinit --
+ *	Return if shared regions need to be initialized.
+ *
+ * PUBLIC: int __db_mapinit __P((void));
+ */
+int
+__db_mapinit()
+{
+	/*
+	 * Historically, some systems required that all of the bytes of the
+	 * region be written before it could be mmapped and accessed randomly.
+	 * We have the option of setting REGION_INIT_NEEDED at configuration
+	 * time if we're running on one of those systems.
+	 */
+#ifdef REGION_INIT_NEEDED
+	return (1);
+#else
+	return (0);
+#endif
+}
+
+/*
+ * __db_mapregion --
+ *	Attach to a shared memory region.
+ *
+ * PUBLIC: int __db_mapregion __P((char *, REGINFO *));
+ */
+int
+__db_mapregion(path, infop)
+	char *path;
+	REGINFO *infop;
+{
+	int called, ret;
+
+	called = 0;
+	ret = EINVAL;
+
+	/* If the user replaces the map call, call through their interface. */
+	if (__db_jump.j_map != NULL) {
+		F_SET(infop, REGION_HOLDINGSYS);
+		return (__db_jump.j_map(path, infop->fd, infop->size,
+		    1, F_ISSET(infop, REGION_ANONYMOUS), 0, &infop->addr));
+	}
+
+	if (F_ISSET(infop, REGION_ANONYMOUS)) {
+		/*
+		 * !!!
+		 * If we're creating anonymous regions:
+		 *
+		 * If it's private, we use mmap(2).  The problem with using
+		 * shmget(2) is that we may be creating a region of which the
+		 * application isn't aware, and if the application crashes
+		 * we'll have no way to remove the system resources for the
+		 * region.
+		 *
+		 * If it's not private, we use the shmget(2) interface if it's
+		 * available, because it allows us to name anonymous memory.
+		 * If shmget(2) isn't available, use the mmap(2) calls.
+		 *
+		 * In the case of anonymous memory, using mmap(2) means the
+		 * memory isn't named and only the single process and its
+		 * threads can access the region.
+		 */
+#ifdef	HAVE_MMAP
+#ifdef	MAP_ANON
+#define	HAVE_MMAP_ANONYMOUS	1
+#else
+#ifdef	MAP_ANONYMOUS
+#define	HAVE_MMAP_ANONYMOUS	1
+#endif
+#endif
+#endif
+#ifdef HAVE_MMAP_ANONYMOUS
+		if (!called && F_ISSET(infop, REGION_PRIVATE)) {
+			called = 1;
+			ret = __os_map(path,
+			    infop->fd, infop->size, 1, 1, 0, &infop->addr);
+		}
+#endif
+#ifdef HAVE_SHMGET
+		if (!called) {
+			called = 1;
+			ret = __os_shmget(path, infop);
+		}
+#endif
+#ifdef HAVE_MMAP
+		/*
+		 * If we're trying to join an unnamed anonymous region, fail --
+		 * that's not possible.
+		 */
+		if (!called) {
+			called = 1;
+
+			if (!F_ISSET(infop, REGION_CREATED)) {
+				__db_err(infop->dbenv,
+			    "cannot join region in unnamed anonymous memory");
+				return (EINVAL);
+			}
+
+			ret = __os_map(path,
+			    infop->fd, infop->size, 1, 1, 0, &infop->addr);
+		}
+#endif
+	} else {
+		/*
+		 * !!!
+		 * If we're creating normal regions, we use the mmap(2)
+		 * interface if it's available because it's POSIX 1003.1
+		 * standard and we trust it more than we do shmget(2).
+		 */
+#ifdef HAVE_MMAP
+		if (!called) {
+			called = 1;
+
+			/* Mmap(2) regions that aren't anonymous can grow. */
+			F_SET(infop, REGION_CANGROW);
+
+			ret = __os_map(path,
+			    infop->fd, infop->size, 1, 0, 0, &infop->addr);
+		}
+#endif
+#ifdef HAVE_SHMGET
+		if (!called) {
+			called = 1;
+			ret = __os_shmget(path, infop);
+		}
+#endif
+	}
+	return (ret);
+}
+
+/*
+ * __db_unmapregion --
+ *	Detach from the shared memory region.
+ *
+ * PUBLIC: int __db_unmapregion __P((REGINFO *));
+ */
+int
+__db_unmapregion(infop)
+	REGINFO *infop;
+{
+	int called, ret;
+
+	called = 0;
+	ret = EINVAL;
+
+	if (__db_jump.j_unmap != NULL)
+		return (__db_jump.j_unmap(infop->addr, infop->size));
+
+#ifdef HAVE_SHMGET
+	if (infop->segid != INVALID_SEGID) {
+		called = 1;
+		ret = shmdt(infop->addr) ? errno : 0;
+	}
+#endif
+#ifdef HAVE_MMAP
+	if (!called) {
+		called = 1;
+		ret = munmap(infop->addr, infop->size) ? errno : 0;
+	}
+#endif
+	return (ret);
+}
+
+/*
+ * __db_unlinkregion --
+ *	Remove the shared memory region.
+ *
+ * PUBLIC: int __db_unlinkregion __P((char *, REGINFO *));
+ */
+int
+__db_unlinkregion(name, infop)
+	char *name;
+	REGINFO *infop;
+{
+	int called, ret;
+
+	called = 0;
+	ret = EINVAL;
+
+	if (__db_jump.j_runlink != NULL)
+		return (__db_jump.j_runlink(name));
+
+#ifdef HAVE_SHMGET
+	if (infop->segid != INVALID_SEGID) {
+		called = 1;
+		ret = shmctl(infop->segid, IPC_RMID, NULL) ? errno : 0;
+	}
+#else
+	COMPQUIET(infop, NULL);
+#endif
+#ifdef HAVE_MMAP
+	if (!called) {
+		called = 1;
+		ret = 0;
+	}
+#endif
+	return (ret);
+}
+
+/*
+ * __db_mapfile --
+ *	Map in a shared memory file.
+ *
+ * PUBLIC: int __db_mapfile __P((char *, int, size_t, int, void **));
+ */
+int
+__db_mapfile(path, fd, len, is_rdonly, addr)
+	char *path;
+	int fd, is_rdonly;
+	size_t len;
+	void **addr;
+{
+	if (__db_jump.j_map != NULL)
+		return (__db_jump.j_map(path, fd, len, 0, 0, is_rdonly, addr));
+
+#ifdef HAVE_MMAP
+	return (__os_map(path, fd, len, 0, 0, is_rdonly, addr));
+#else
+	return (EINVAL);
+#endif
+}
+
+/*
+ * __db_unmapfile --
+ *	Unmap the shared memory file.
  *
- * PUBLIC: int __os_map __P((int, size_t, int, int, void **));
+ * PUBLIC: int __db_unmapfile __P((void *, size_t));
  */
 int
-__os_map(fd, len, is_private, is_rdonly, addr)
-	int fd, is_private, is_rdonly;
+__db_unmapfile(addr, len)
+	void *addr;
+	size_t len;
+{
+	if (__db_jump.j_unmap != NULL)
+		return (__db_jump.j_unmap(addr, len));
+
+#ifdef HAVE_MMAP
+	return (munmap(addr, len) ? errno : 0);
+#else
+	return (EINVAL);
+#endif
+}
+
+#ifdef HAVE_MMAP
+/*
+ * __os_map --
+ *	Call the mmap(2) function.
+ */
+static int
+__os_map(path, fd, len, is_region, is_anonymous, is_rdonly, addr)
+	char *path;
+	int fd, is_region, is_anonymous, is_rdonly;
 	size_t len;
 	void **addr;
 {
 	void *p;
 	int flags, prot;
 
-	flags = is_private ? MAP_PRIVATE : MAP_SHARED;
+	COMPQUIET(path, NULL);
+
+	/*
+	 * If it's read-only, it's private, and if it's not, it's shared.
+	 * Don't bother with an additional parameter.
+	 */
+	flags = is_rdonly ? MAP_PRIVATE : MAP_SHARED;
+
+	if (is_region && is_anonymous) {
+		/*
+		 * BSD derived systems use MAP_ANON; Digital Unix and HP/UX
+		 * use MAP_ANONYMOUS.
+		 */
+#ifdef MAP_ANON
+		flags |= MAP_ANON;
+#endif
+#ifdef MAP_ANONYMOUS
+		flags |= MAP_ANONYMOUS;
+#endif
+		fd = -1;
+	}
+#ifdef MAP_FILE
+	if (!is_region || !is_anonymous) {
+		/*
+		 * Historically, MAP_FILE was required for mapping regular
+		 * files, even though it was the default.  Some systems have
+		 * it, some don't, some that have it set it to 0.
+		 */
+		flags |= MAP_FILE;
+	}
+#endif
+
+	/*
+	 * I know of no systems that implement the flag to tell the system
+	 * that the region contains semaphores, but it's not an unreasonable
+	 * thing to do, and has been part of the design since forever.  I
+	 * don't think anyone will object, but don't set it for read-only
+	 * files, it doesn't make sense.
+	 */
 #ifdef MAP_HASSEMAPHORE
-	flags |= MAP_HASSEMAPHORE;
+	if (!is_rdonly)
+		flags |= MAP_HASSEMAPHORE;
 #endif
+
 	prot = PROT_READ | (is_rdonly ? 0 : PROT_WRITE);
 
-#ifndef MAP_FAILED			/* XXX: Mmap(2) failure return. */
+	/* MAP_FAILED was not defined in early mmap implementations. */
+#ifndef MAP_FAILED
 #define	MAP_FAILED	-1
 #endif
 	if ((p =
@@ -51,21 +399,67 @@ __os_map(fd, len, is_private, is_rdonly, addr)
 	*addr = p;
 	return (0);
 }
+#endif
 
+#ifdef HAVE_SHMGET
 /*
- * __os_unmap --
- *	Release the specified shared memory.
- *
- * PUBLIC: int __os_unmap __P((void *, size_t));
+ * __os_shmget --
+ *	Call the shmget(2) family of functions.
  */
-int
-__os_unmap(addr, len)
-	void *addr;
-	size_t len;
+static int
+__os_shmget(path, infop)
+	REGINFO *infop;
+	char *path;
 {
-	/*
-	 * !!!
-	 * The argument len is always the same length as was mapped.
-	 */
-	return (munmap(addr, len) ? errno : 0);
+	key_t key;
+	int shmflg;
+
+	if (F_ISSET(infop, REGION_CREATED)) {
+		/*
+		 * The return key from ftok(3) is not guaranteed to be unique.
+		 * The nice thing about the shmget(2) interface is that it
+		 * allows you to name anonymous pieces of memory.  The evil
+		 * thing about it is that the name space is separate from the
+		 * filesystem.
+		 */
+#ifdef __hp3000s900
+		{char mpe_path[MAXPATHLEN];
+		/*
+		 * MPE ftok() is broken as of 5.5pp4.  If the file path does
+		 * not start with '/' or '.', then ftok() tries to interpret
+		 * the file path in MPE syntax instead of POSIX HFS syntax.
+		 * The workaround is to prepend "./" to these paths.  See HP
+		 * SR 5003416081 for details.
+		 */
+		if (*path != '/' && *path != '.') {
+			if (strlen(path) + strlen("./") + 1 > sizeof(mpe_path))
+				return (ENAMETOOLONG);
+			mpe_path[0] = '.';
+			mpe_path[1] = '/';
+			(void)strcpy(mpe_path + 2, path);
+			path = mpe_path;
+		}
+		}
+#endif
+		if ((key = ftok(path, 1)) == (key_t)-1)
+			return (errno);
+
+		shmflg = IPC_CREAT | 0600;
+		if ((infop->segid = shmget(key, infop->size, shmflg)) == -1)
+			return (errno);
+	}
+
+	if ((infop->addr = shmat(infop->segid, NULL, 0)) == (void *)-1) {
+		/*
+		 * If we're trying to join the region and failing, assume
+		 * that there was a reboot and the region no longer exists.
+		 */
+		if (!F_ISSET(infop, REGION_CREATED))
+			errno = EAGAIN;
+		return (errno);
+	}
+
+	F_SET(infop, REGION_HOLDINGSYS);
+	return (0);
 }
+#endif
diff --git a/db2/os/os_oflags.c b/db2/os/os_oflags.c
index 3656eef..388c1c6 100644
--- a/db2/os/os_oflags.c
+++ b/db2/os/os_oflags.c
@@ -1,18 +1,19 @@
 /*-
  * See the file LICENSE for redistribution information.
  *
- * Copyright (c) 1997
+ * Copyright (c) 1997, 1998
  *	Sleepycat Software.  All rights reserved.
  */
 
 #include "config.h"
 
 #ifndef lint
-static const char sccsid[] = "@(#)os_oflags.c	10.2 (Sleepycat) 10/24/97";
+static const char sccsid[] = "@(#)os_oflags.c	10.6 (Sleepycat) 4/19/98";
 #endif /* not lint */
 
 #ifndef NO_SYSTEM_INCLUDES
 #include <sys/types.h>
+#include <sys/stat.h>
 
 #include <fcntl.h>
 #endif
@@ -23,13 +24,13 @@ static const char sccsid[] = "@(#)os_oflags.c	10.2 (Sleepycat) 10/24/97";
  * __db_oflags --
  *	Convert open(2) flags to DB flags.
  *
- * PUBLIC: int __db_oflags __P((int));
+ * PUBLIC: u_int32_t __db_oflags __P((int));
  */
-int
+u_int32_t
 __db_oflags(oflags)
 	int oflags;
 {
-	int dbflags;
+	u_int32_t dbflags;
 
 	/*
 	 * XXX
@@ -46,3 +47,48 @@ __db_oflags(oflags)
 		dbflags |= DB_TRUNCATE;
 	return (dbflags);
 }
+
+/*
+ * __db_omode --
+ *	Convert a permission string to the correct open(2) flags.
+ *
+ * PUBLIC: int __db_omode __P((const char *));
+ */
+int
+__db_omode(perm)
+	const char *perm;
+{
+	int mode;
+
+#ifndef	S_IRUSR
+#if defined(_WIN32) || defined(WIN16)
+#define	S_IRUSR	S_IREAD		/* R for owner */
+#define	S_IWUSR	S_IWRITE	/* W for owner */
+#define	S_IRGRP	0		/* R for group */
+#define	S_IWGRP	0		/* W for group */
+#define	S_IROTH	0		/* R for other */
+#define	S_IWOTH	0		/* W for other */
+#else
+#define	S_IRUSR	0000400		/* R for owner */
+#define	S_IWUSR	0000200		/* W for owner */
+#define	S_IRGRP	0000040		/* R for group */
+#define	S_IWGRP	0000020		/* W for group */
+#define	S_IROTH	0000004		/* R for other */
+#define	S_IWOTH	0000002		/* W for other */
+#endif /* _WIN32 || WIN16 */
+#endif
+	mode = 0;
+	if (perm[0] == 'r')
+		mode |= S_IRUSR;
+	if (perm[1] == 'w')
+		mode |= S_IWUSR;
+	if (perm[2] == 'r')
+		mode |= S_IRGRP;
+	if (perm[3] == 'w')
+		mode |= S_IWGRP;
+	if (perm[4] == 'r')
+		mode |= S_IROTH;
+	if (perm[5] == 'w')
+		mode |= S_IWOTH;
+	return (mode);
+}
diff --git a/db2/os/os_open.c b/db2/os/os_open.c
index a628765..e960377 100644
--- a/db2/os/os_open.c
+++ b/db2/os/os_open.c
@@ -1,14 +1,14 @@
 /*-
  * See the file LICENSE for redistribution information.
  *
- * Copyright (c) 1997
+ * Copyright (c) 1997, 1998
  *	Sleepycat Software.  All rights reserved.
  */
 
 #include "config.h"
 
 #ifndef lint
-static const char sccsid[] = "@(#)os_open.c	10.20 (Sleepycat) 11/27/97";
+static const char sccsid[] = "@(#)os_open.c	10.26 (Sleepycat) 5/4/98";
 #endif /* not lint */
 
 #ifndef NO_SYSTEM_INCLUDES
@@ -25,12 +25,13 @@ static const char sccsid[] = "@(#)os_open.c	10.20 (Sleepycat) 11/27/97";
  * __db_open --
  *	Open a file descriptor.
  *
- * PUBLIC: int __db_open __P((const char *, int, int, int, int *));
+ * PUBLIC: int __db_open __P((const char *, u_int32_t, u_int32_t, int, int *));
  */
 int
 __db_open(name, arg_flags, ok_flags, mode, fdp)
 	const char *name;
-	int arg_flags, ok_flags, mode, *fdp;
+	u_int32_t arg_flags, ok_flags;
+	int mode, *fdp;
 {
 	int fd, flags;
 
@@ -54,7 +55,7 @@ __db_open(name, arg_flags, ok_flags, mode, fdp)
 	else
 		flags |= O_RDWR;
 
-#ifdef _WIN32
+#if defined(_WIN32) || defined(WIN16)
 #ifdef _MSC_VER
 	if (arg_flags & DB_SEQUENTIAL)
 		flags |= _O_SEQUENTIAL;
@@ -80,7 +81,7 @@ __db_open(name, arg_flags, ok_flags, mode, fdp)
 		(void)__os_unlink(name);
 #endif
 
-#if !defined(_WIN32) && !defined(macintosh)
+#if !defined(_WIN32) && !defined(WIN16)
 	/*
 	 * Deny access to any child process; done for Win32 by O_NOINHERIT,
 	 * MacOS has neither child processes nor fd inheritance.
diff --git a/db2/os/os_rpath.c b/db2/os/os_rpath.c
index 44fd4ec..23867b3 100644
--- a/db2/os/os_rpath.c
+++ b/db2/os/os_rpath.c
@@ -1,14 +1,14 @@
 /*-
  * See the file LICENSE for redistribution information.
  *
- * Copyright (c) 1997
+ * Copyright (c) 1997, 1998
  *	Sleepycat Software.  All rights reserved.
  */
 
 #include "config.h"
 
 #ifndef lint
-static const char sccsid[] = "@(#)os_rpath.c	10.2 (Sleepycat) 10/24/97";
+static const char sccsid[] = "@(#)os_rpath.c	10.3 (Sleepycat) 4/10/98";
 #endif /* not lint */
 
 #ifndef NO_SYSTEM_INCLUDES
diff --git a/db2/os/os_rw.c b/db2/os/os_rw.c
index 48f7fdc..7591041 100644
--- a/db2/os/os_rw.c
+++ b/db2/os/os_rw.c
@@ -1,14 +1,14 @@
 /*-
  * See the file LICENSE for redistribution information.
  *
- * Copyright (c) 1997
+ * Copyright (c) 1997, 1998
  *	Sleepycat Software.  All rights reserved.
  */
 
 #include "config.h"
 
 #ifndef lint
-static const char sccsid[] = "@(#)os_rw.c	10.6 (Sleepycat) 10/25/97";
+static const char sccsid[] = "@(#)os_rw.c	10.7 (Sleepycat) 4/10/98";
 #endif /* not lint */
 
 #ifndef NO_SYSTEM_INCLUDES
diff --git a/db2/os/os_seek.c b/db2/os/os_seek.c
index e27044b..159425c 100644
--- a/db2/os/os_seek.c
+++ b/db2/os/os_seek.c
@@ -1,14 +1,14 @@
 /*-
  * See the file LICENSE for redistribution information.
  *
- * Copyright (c) 1997
+ * Copyright (c) 1997, 1998
  *	Sleepycat Software.  All rights reserved.
  */
 
 #include "config.h"
 
 #ifndef lint
-static const char sccsid[] = "@(#)os_seek.c	10.6 (Sleepycat) 10/25/97";
+static const char sccsid[] = "@(#)os_seek.c	10.9 (Sleepycat) 4/19/98";
 #endif /* not lint */
 
 #ifndef NO_SYSTEM_INCLUDES
@@ -24,19 +24,21 @@ static const char sccsid[] = "@(#)os_seek.c	10.6 (Sleepycat) 10/25/97";
  * __os_seek --
  *	Seek to a page/byte offset in the file.
  *
- * PUBLIC: int __os_seek __P((int, size_t, db_pgno_t, u_long, int));
+ * PUBLIC: int __os_seek __P((int, size_t, db_pgno_t, u_int32_t, int, int));
  */
 int
-__os_seek(fd, pgsize, pageno, relative, whence)
+__os_seek(fd, pgsize, pageno, relative, isrewind, whence)
 	int fd;
 	size_t pgsize;
 	db_pgno_t pageno;
-	u_long relative;
-	int whence;
+	u_int32_t relative;
+	int isrewind, whence;
 {
 	off_t offset;
 
-	offset = pgsize * pageno + relative;
+	offset = (off_t)pgsize * pageno + relative;
+	if (isrewind)
+		offset = -offset;
 
 	return (lseek(fd, offset, whence) == -1 ? errno : 0);
 }
diff --git a/db2/os/os_sleep.c b/db2/os/os_sleep.c
index 2d2cb71..6a5b91f 100644
--- a/db2/os/os_sleep.c
+++ b/db2/os/os_sleep.c
@@ -1,14 +1,14 @@
 /*-
  * See the file LICENSE for redistribution information.
  *
- * Copyright (c) 1997
+ * Copyright (c) 1997, 1998
  *	Sleepycat Software.  All rights reserved.
  */
 
 #include "config.h"
 
 #ifndef lint
-static const char sccsid[] = "@(#)os_sleep.c	10.8 (Sleepycat) 10/25/97";
+static const char sccsid[] = "@(#)os_sleep.c	10.10 (Sleepycat) 4/27/98";
 #endif /* not lint */
 
 #ifndef NO_SYSTEM_INCLUDES
@@ -42,7 +42,8 @@ __os_sleep(secs, usecs)
 	struct timeval t;
 
 	/* Don't require that the values be normalized. */
-	for (; usecs >= 1000000; ++secs, usecs -= 1000000);
+	for (; usecs >= 1000000; ++secs, usecs -= 1000000)
+		;
 
 	/*
 	 * It's important that we yield the processor here so that other
diff --git a/db2/os/os_spin.c b/db2/os/os_spin.c
index fb693c2..2fd21d0 100644
--- a/db2/os/os_spin.c
+++ b/db2/os/os_spin.c
@@ -1,14 +1,14 @@
 /*-
  * See the file LICENSE for redistribution information.
  *
- * Copyright (c) 1997
+ * Copyright (c) 1997, 1998
  *	Sleepycat Software.  All rights reserved.
  */
 
 #include "config.h"
 
 #ifndef lint
-static const char sccsid[] = "@(#)os_spin.c	10.3 (Sleepycat) 11/25/97";
+static const char sccsid[] = "@(#)os_spin.c	10.7 (Sleepycat) 5/20/98";
 #endif /* not lint */
 
 #ifndef NO_SYSTEM_INCLUDES
@@ -29,28 +29,33 @@ static const char sccsid[] = "@(#)os_spin.c	10.3 (Sleepycat) 11/25/97";
 int
 __os_spin()
 {
-	extern int __db_tsl_spins;
+	static long sys_val;
 
 	/* If the application specified the spins, use its value. */
-	if (__db_tsl_spins != 0)
-		return (__db_tsl_spins);
+	if (DB_GLOBAL(db_tsl_spins) != 0)
+		return (DB_GLOBAL(db_tsl_spins));
+
+	/* If we've already figured this out, return the value. */
+	if (sys_val != 0)
+		return (sys_val);
 
 	/*
 	 * XXX
-	 * Sysconf: Solaris uses _SC_NPROCESSORS_ONLN to return the number
-	 * of online processors.  I don't know if this call is portable or
-	 * not.
+	 * Solaris and Linux use _SC_NPROCESSORS_ONLN to return the number of
+	 * online processors.  We don't want to repeatedly call sysconf because
+	 * it's quite expensive (requiring multiple filesystem accesses) under
+	 * Debian Linux.
+	 *
+	 * Spin 50 times per processor -- we have anecdotal evidence that this
+	 * is a reasonable value.
 	 */
 #if defined(HAVE_SYSCONF) && defined(_SC_NPROCESSORS_ONLN)
-	{
-		long sys_val;
-
-		sys_val = sysconf(_SC_NPROCESSORS_ONLN);
-		if (sys_val > 0)
-			return (sys_val * 50);
-	}
+	if ((sys_val = sysconf(_SC_NPROCESSORS_ONLN)) > 1)
+		sys_val *= 50;
+	else
+		sys_val = 1;
+#else
+	sys_val = 1;
 #endif
-
-	/* Default to a single processor. */
-	return (1);
+	return (sys_val);
 }
diff --git a/db2/os/os_stat.c b/db2/os/os_stat.c
index 73600b6..e7d3f24 100644
--- a/db2/os/os_stat.c
+++ b/db2/os/os_stat.c
@@ -1,14 +1,14 @@
 /*-
  * See the file LICENSE for redistribution information.
  *
- * Copyright (c) 1997
+ * Copyright (c) 1997, 1998
  *	Sleepycat Software.  All rights reserved.
  */
 
 #include "config.h"
 
 #ifndef lint
-static const char sccsid[] = "@(#)os_stat.c	10.11 (Sleepycat) 1/8/98";
+static const char sccsid[] = "@(#)os_stat.c	10.15 (Sleepycat) 4/27/98";
 #endif /* not lint */
 
 #ifndef NO_SYSTEM_INCLUDES
@@ -16,11 +16,9 @@ static const char sccsid[] = "@(#)os_stat.c	10.11 (Sleepycat) 1/8/98";
 #include <sys/stat.h>
 
 #include <errno.h>
-#include <string.h>
 #endif
 
 #include "db_int.h"
-#include "common_ext.h"
 
 /*
  * __os_exists --
@@ -37,8 +35,17 @@ __os_exists(path, isdirp)
 
 	if (stat(path, &sb) != 0)
 		return (errno);
+
+#if !defined(S_ISDIR) || defined(STAT_MACROS_BROKEN)
+#if defined(_WIN32) || defined(WIN16)
+#define	S_ISDIR(m)	(_S_IFDIR & (m))
+#else
+#define	S_ISDIR(m)	(((m) & 0170000) == 0040000)
+#endif
+#endif
 	if (isdirp != NULL)
 		*isdirp = S_ISDIR(sb.st_mode);
+
 	return (0);
 }
 
@@ -69,10 +76,16 @@ __os_ioinfo(path, fd, mbytesp, bytesp, iosizep)
 	if (bytesp != NULL)
 		*bytesp = sb.st_size % MEGABYTE;
 
-	/* Return the underlying filesystem blocksize, if available. */
+	/*
+	 * Return the underlying filesystem blocksize, if available.
+	 *
+	 * XXX
+	 * Check for a 0 size -- HP's MPE architecture has st_blksize,
+	 * but it's always 0.
+	 */
 #ifdef HAVE_ST_BLKSIZE
-	if (iosizep != NULL)
-		*iosizep = sb.st_blksize;
+	if (iosizep != NULL && (*iosizep = sb.st_blksize) == 0)
+		*iosizep = DB_DEF_IOSIZE;
 #else
 	if (iosizep != NULL)
 		*iosizep = DB_DEF_IOSIZE;
diff --git a/db2/os/os_unlink.c b/db2/os/os_unlink.c
index 473ce77..3a1fa3f 100644
--- a/db2/os/os_unlink.c
+++ b/db2/os/os_unlink.c
@@ -1,14 +1,14 @@
 /*-
  * See the file LICENSE for redistribution information.
  *
- * Copyright (c) 1997
+ * Copyright (c) 1997, 1998
  *	Sleepycat Software.  All rights reserved.
  */
 
 #include "config.h"
 
 #ifndef lint
-static const char sccsid[] = "@(#)os_unlink.c	10.4 (Sleepycat) 10/28/97";
+static const char sccsid[] = "@(#)os_unlink.c	10.5 (Sleepycat) 4/10/98";
 #endif /* not lint */
 
 #ifndef NO_SYSTEM_INCLUDES