From 54df2afaa61c6a03cbb4a33c9b90fa572b6d07b8 Mon Sep 17 00:00:00 2001
From: Jesse Morgan <jesse@jesterpm.net>
Date: Sat, 17 Dec 2016 21:28:53 -0800
Subject: Berkeley DB 4.8 with rust build script for linux.

---
 db-4.8.30/os_windows/ce_ctime.c    |  87 ++++++++
 db-4.8.30/os_windows/os_abs.c      |  30 +++
 db-4.8.30/os_windows/os_clock.c    |  79 +++++++
 db-4.8.30/os_windows/os_config.c   | 133 ++++++++++++
 db-4.8.30/os_windows/os_cpu.c      |  27 +++
 db-4.8.30/os_windows/os_dir.c      | 122 +++++++++++
 db-4.8.30/os_windows/os_errno.c    | 427 +++++++++++++++++++++++++++++++++++++
 db-4.8.30/os_windows/os_fid.c      | 129 +++++++++++
 db-4.8.30/os_windows/os_flock.c    |  88 ++++++++
 db-4.8.30/os_windows/os_fsync.c    |  43 ++++
 db-4.8.30/os_windows/os_getenv.c   | 102 +++++++++
 db-4.8.30/os_windows/os_handle.c   | 165 ++++++++++++++
 db-4.8.30/os_windows/os_map.c      | 362 +++++++++++++++++++++++++++++++
 db-4.8.30/os_windows/os_mkdir.c    |  43 ++++
 db-4.8.30/os_windows/os_open.c     | 255 ++++++++++++++++++++++
 db-4.8.30/os_windows/os_rename.c   |  81 +++++++
 db-4.8.30/os_windows/os_rw.c       | 215 +++++++++++++++++++
 db-4.8.30/os_windows/os_seek.c     |  65 ++++++
 db-4.8.30/os_windows/os_stat.c     |  90 ++++++++
 db-4.8.30/os_windows/os_truncate.c |  98 +++++++++
 db-4.8.30/os_windows/os_unlink.c   | 108 ++++++++++
 db-4.8.30/os_windows/os_yield.c    |  35 +++
 22 files changed, 2784 insertions(+)
 create mode 100644 db-4.8.30/os_windows/ce_ctime.c
 create mode 100644 db-4.8.30/os_windows/os_abs.c
 create mode 100644 db-4.8.30/os_windows/os_clock.c
 create mode 100644 db-4.8.30/os_windows/os_config.c
 create mode 100644 db-4.8.30/os_windows/os_cpu.c
 create mode 100644 db-4.8.30/os_windows/os_dir.c
 create mode 100644 db-4.8.30/os_windows/os_errno.c
 create mode 100644 db-4.8.30/os_windows/os_fid.c
 create mode 100644 db-4.8.30/os_windows/os_flock.c
 create mode 100644 db-4.8.30/os_windows/os_fsync.c
 create mode 100644 db-4.8.30/os_windows/os_getenv.c
 create mode 100644 db-4.8.30/os_windows/os_handle.c
 create mode 100644 db-4.8.30/os_windows/os_map.c
 create mode 100644 db-4.8.30/os_windows/os_mkdir.c
 create mode 100644 db-4.8.30/os_windows/os_open.c
 create mode 100644 db-4.8.30/os_windows/os_rename.c
 create mode 100644 db-4.8.30/os_windows/os_rw.c
 create mode 100644 db-4.8.30/os_windows/os_seek.c
 create mode 100644 db-4.8.30/os_windows/os_stat.c
 create mode 100644 db-4.8.30/os_windows/os_truncate.c
 create mode 100644 db-4.8.30/os_windows/os_unlink.c
 create mode 100644 db-4.8.30/os_windows/os_yield.c

(limited to 'db-4.8.30/os_windows')

diff --git a/db-4.8.30/os_windows/ce_ctime.c b/db-4.8.30/os_windows/ce_ctime.c
new file mode 100644
index 0000000..1937c0a
--- /dev/null
+++ b/db-4.8.30/os_windows/ce_ctime.c
@@ -0,0 +1,87 @@
+/*-
+ * See the file LICENSE for redistribution information.
+ *
+ * Copyright (c) 2001-2009 Oracle.  All rights reserved.
+ *
+ * $Id$
+ */
+
+#include "db_config.h"
+
+#include "db_int.h"
+
+static void  __os_windows_ct_numb __P((char *, int));
+
+/*
+ * __os_ctime --
+ *	Format a time-stamp.
+ */
+char *
+__os_ctime(tod, time_buf)
+	const time_t *tod;
+	char *time_buf;
+{
+	char *ncp;
+	__int64 i64_tod;
+	struct _FILETIME file_tod, file_loc;
+	struct _SYSTEMTIME sys_loc;
+static const __int64 SECS_BETWEEN_EPOCHS = 11644473600;
+static const __int64 SECS_TO_100NS = 10000000; /* 10^7 */
+
+	strcpy(time_buf, "Thu Jan 01 00:00:00 1970");
+	time_buf[CTIME_BUFLEN - 1] = '\0';
+
+	/* Convert the tod to a SYSTEM_TIME struct */
+	i64_tod = *tod;
+	i64_tod = (i64_tod + SECS_BETWEEN_EPOCHS)*SECS_TO_100NS;
+	memcpy(&file_tod, &i64_tod, sizeof(file_tod));
+	FileTimeToLocalFileTime(&file_tod, &file_loc);
+	FileTimeToSystemTime(&file_loc, &sys_loc);
+
+	/*
+	 * Convert the _SYSTEMTIME to the correct format in time_buf.
+	 * Based closely on the os_brew/ctime.c implementation.
+	 *
+	 * wWeekDay : Day of the week 0-6 (0=Monday, 6=Sunday)
+	 */
+	ncp = &"MonTueWedThuFriSatSun"[sys_loc.wDayOfWeek*3];
+	time_buf[0] = *ncp++;
+	time_buf[1] = *ncp++;
+	time_buf[2] = *ncp;
+	ncp = &"JanFebMarAprMayJunJulAugSepOctNovDec"[(sys_loc.wMonth - 1) * 3];
+	time_buf[4] = *ncp++;
+	time_buf[5] = *ncp++;
+	time_buf[6] = *ncp;
+
+	__os_windows_ct_numb(time_buf + 8, sys_loc.wDay);
+					/* Add 100 to keep the leading zero. */
+	__os_windows_ct_numb(time_buf + 11, sys_loc.wHour + 100);
+	__os_windows_ct_numb(time_buf + 14, sys_loc.wMinute + 100);
+	__os_windows_ct_numb(time_buf + 17, sys_loc.wSecond + 100);
+
+	if (sys_loc.wYear < 100) {		/* 9 99 */
+		time_buf[20] = ' ';
+		time_buf[21] = ' ';
+		__os_windows_ct_numb(time_buf + 22, sys_loc.wYear);
+	} else {			/* 99 1999 */
+		__os_windows_ct_numb(time_buf + 20, sys_loc.wYear / 100);
+		__os_windows_ct_numb(time_buf + 22, sys_loc.wYear % 100 + 100);
+	}
+
+	return (time_buf);
+}
+
+/*
+ * __os_windows_ct_numb --
+ *	Append ASCII representations for two digits to a string.
+ */
+static void
+__os_windows_ct_numb(cp, n)
+	char *cp;
+	int n;
+{
+	cp[0] = ' ';
+	if (n >= 10)
+		cp[0] = (n / 10) % 10 + '0';
+	cp[1] = n % 10 + '0';
+}
diff --git a/db-4.8.30/os_windows/os_abs.c b/db-4.8.30/os_windows/os_abs.c
new file mode 100644
index 0000000..4ab39f5
--- /dev/null
+++ b/db-4.8.30/os_windows/os_abs.c
@@ -0,0 +1,30 @@
+/*-
+ * See the file LICENSE for redistribution information.
+ *
+ * Copyright (c) 1997-2009 Oracle.  All rights reserved.
+ *
+ * $Id$
+ */
+
+#include "db_config.h"
+
+#include "db_int.h"
+
+/*
+ * __os_abspath --
+ *	Return if a path is an absolute path.
+ */
+int
+__os_abspath(path)
+	const char *path;
+{
+	/*
+	 * !!!
+	 * Check for drive specifications, e.g., "C:".  In addition, the path
+	 * separator used by the win32 DB (PATH_SEPARATOR) is \; look for both
+	 * / and \ since these are user-input paths.
+	 */
+	if (isalpha(path[0]) && path[1] == ':')
+		path += 2;
+	return (path[0] == '/' || path[0] == '\\');
+}
diff --git a/db-4.8.30/os_windows/os_clock.c b/db-4.8.30/os_windows/os_clock.c
new file mode 100644
index 0000000..66c1ece
--- /dev/null
+++ b/db-4.8.30/os_windows/os_clock.c
@@ -0,0 +1,79 @@
+/*-
+ * See the file LICENSE for redistribution information.
+ *
+ * Copyright (c) 2001-2009 Oracle.  All rights reserved.
+ *
+ * $Id$
+ */
+
+#include "db_config.h"
+
+#include "db_int.h"
+
+/*
+ * __os_gettime --
+ *	Return the current time-of-day clock in seconds and nanoseconds.
+ */
+void
+__os_gettime(env, tp, monotonic)
+	ENV *env;
+	db_timespec *tp;
+	int monotonic;
+{
+	if (monotonic) {
+		/*
+		 * The elapsed time is stored as a DWORD value, so time wraps
+		 * around to zero if the system runs for 49.7 days.  Initialize
+		 * a base value with 50 days worth of seconds, and add 50 more
+		 * days every time the counter wraps.  That ensures we always
+		 * move forward.
+		 *
+		 * It's possible this code could race, but the danger is we
+		 * would increment base_seconds more than once per wrap and
+		 * eventually overflow, which is a pretty remote possibility.
+		 */
+#define	TIMER_WRAP_SECONDS	(50 * 24 * 60 * 60)
+		static DWORD last_ticks;
+		static time_t base_seconds;
+		DWORD ticks;
+
+		ticks = GetTickCount();
+		if (ticks < last_ticks)
+			base_seconds += TIMER_WRAP_SECONDS;
+		last_ticks = ticks;
+		tp->tv_sec = base_seconds + (u_int32_t)(ticks / 1000);
+		tp->tv_nsec = (u_int32_t)((ticks % 1000) * NS_PER_MS);
+	} else {
+#ifdef DB_WINCE
+		FILETIME ft;
+		LARGE_INTEGER large_int;
+		LONGLONG ns_since_epoch, utc1970;
+		SYSTEMTIME st;
+
+		(void)GetSystemTime(&st);
+		(void)SystemTimeToFileTime(&st, &ft);
+
+		/*
+		 * A FILETIME expresses time as 100 nanosecond chunks from
+		 * Jan 1, 1601; convert to a timespec where the time is
+		 * is expressed in seconds and nanoseconds from Jan 1, 1970.
+		 *
+		 * UTC_1970 is the number of 100-nano-second chunks from
+		 * 1601 to 1970.
+		 */
+#define	NS100_PER_SEC	(NS_PER_SEC / 100)
+#define	UTC_1970	(((LONGLONG)27111902 << 32) + (LONGLONG)3577643008)
+		memcpy(&large_int, &ft, sizeof(large_int));
+		utc1970 = UTC_1970;
+		ns_since_epoch = (large_int.QuadPart - utc1970);
+		tp->tv_sec = (time_t)(ns_since_epoch / NS100_PER_SEC);
+		tp->tv_nsec = (long)(ns_since_epoch % NS100_PER_SEC);
+#else
+		struct _timeb now;
+
+		_ftime(&now);
+		tp->tv_sec = now.time;
+		tp->tv_nsec = now.millitm * NS_PER_MS;
+#endif
+	}
+}
diff --git a/db-4.8.30/os_windows/os_config.c b/db-4.8.30/os_windows/os_config.c
new file mode 100644
index 0000000..5833d58
--- /dev/null
+++ b/db-4.8.30/os_windows/os_config.c
@@ -0,0 +1,133 @@
+/*-
+ * See the file LICENSE for redistribution information.
+ *
+ * Copyright (c) 1999-2009 Oracle.  All rights reserved.
+ *
+ * $Id$
+ */
+
+#include "db_config.h"
+
+#include "db_int.h"
+
+/*
+ * __os_is_winnt --
+ *	Return 1 if Windows/NT, otherwise 0.
+ *
+ * PUBLIC: int __os_is_winnt __P((void));
+ */
+int
+__os_is_winnt()
+{
+#ifdef DB_WINCE
+	return (1);
+#else
+	static int __os_type = -1;
+
+	/*
+	 * The value of __os_type is computed only once, and cached to
+	 * avoid the overhead of repeated calls to GetVersion().
+	 */
+	if (__os_type == -1) {
+		if ((GetVersion() & 0x80000000) == 0)
+			__os_type = 1;
+		else
+			__os_type = 0;
+	}
+	return (__os_type);
+#endif
+}
+
+/*
+ * __os_fs_notzero --
+ *	Return 1 if allocated filesystem blocks are not zeroed.
+ */
+int
+__os_fs_notzero()
+{
+#ifdef DB_WINCE
+	return (1);
+#else
+	static int __os_notzero = -1;
+	OSVERSIONINFO osvi;
+
+	/*
+	 * Windows/NT zero-fills pages that were never explicitly written to
+	 * the file.  Note however that this is *NOT* documented.  In fact, the
+	 * Win32 documentation makes it clear that there are no guarantees that
+	 * uninitialized bytes will be zeroed:
+	 *
+	 *   If the file is extended, the contents of the file between the old
+	 *   EOF position and the new position are not defined.
+	 *
+	 * Experiments confirm that NT/2K/XP all zero fill for both NTFS and
+	 * FAT32.  Cygwin also relies on this behavior.  This is the relevant
+	 * comment from Cygwin:
+	 *
+	 *    Oops, this is the bug case - Win95 uses whatever is on the disk
+	 *    instead of some known (safe) value, so we must seek back and fill
+	 *    in the gap with zeros. - DJ
+	 *    Note: this bug doesn't happen on NT4, even though the
+	 *    documentation for WriteFile() says that it *may* happen on any OS.
+	 *
+	 * We're making a bet, here, but we made it a long time ago and haven't
+	 * yet seen any evidence that it was wrong.
+	 *
+	 * Windows 95/98 and On-Time give random garbage, and that breaks
+	 * Berkeley DB.
+	 *
+	 * The value of __os_notzero is computed only once, and cached to
+	 * avoid the overhead of repeated calls to GetVersion().
+	 */
+	if (__os_notzero == -1) {
+		if (__os_is_winnt()) {
+			osvi.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
+			GetVersionEx(&osvi);
+			if (_tcscmp(osvi.szCSDVersion, _T("RTTarget-32")) == 0)
+				__os_notzero = 1;	/* On-Time */
+			else
+				__os_notzero = 0;	/* Windows/NT */
+		} else
+			__os_notzero = 1;		/* Not Windows/NT */
+	}
+	return (__os_notzero);
+#endif
+}
+
+/*
+ * __os_support_direct_io --
+ *	Check to see if we support direct I/O.
+ */
+int
+__os_support_direct_io()
+{
+	return (1);
+}
+
+/*
+ * __os_support_db_register --
+ *	Return 1 if the system supports DB_REGISTER.
+ */
+int
+__os_support_db_register()
+{
+#ifdef DB_WINCE
+	return (0);
+#else
+	return (__os_is_winnt());
+#endif
+}
+
+/*
+ * __os_support_replication --
+ *	Return 1 if the system supports replication.
+ */
+int
+__os_support_replication()
+{
+#ifdef DB_WINCE
+	return (0);
+#else
+	return (__os_is_winnt());
+#endif
+}
diff --git a/db-4.8.30/os_windows/os_cpu.c b/db-4.8.30/os_windows/os_cpu.c
new file mode 100644
index 0000000..5238904
--- /dev/null
+++ b/db-4.8.30/os_windows/os_cpu.c
@@ -0,0 +1,27 @@
+/*-
+ * See the file LICENSE for redistribution information.
+ *
+ * Copyright (c) 1997-2009 Oracle.  All rights reserved.
+ *
+ * $Id$
+ */
+
+#include "db_config.h"
+
+#include "db_int.h"
+
+/*
+ * __os_cpu_count --
+ *	Return the number of CPUs.
+ *
+ * PUBLIC: u_int32_t __os_cpu_count __P((void));
+ */
+u_int32_t
+__os_cpu_count()
+{
+	SYSTEM_INFO SystemInfo;
+
+	GetSystemInfo(&SystemInfo);
+
+	return ((u_int32_t)SystemInfo.dwNumberOfProcessors);
+}
diff --git a/db-4.8.30/os_windows/os_dir.c b/db-4.8.30/os_windows/os_dir.c
new file mode 100644
index 0000000..acb646d
--- /dev/null
+++ b/db-4.8.30/os_windows/os_dir.c
@@ -0,0 +1,122 @@
+/*-
+ * See the file LICENSE for redistribution information.
+ *
+ * Copyright (c) 1997-2009 Oracle.  All rights reserved.
+ *
+ * $Id$
+ */
+
+#include "db_config.h"
+
+#include "db_int.h"
+
+/*
+ * __os_dirlist --
+ *	Return a list of the files in a directory.
+ */
+int
+__os_dirlist(env, dir, returndir, namesp, cntp)
+	ENV *env;
+	const char *dir;
+	int returndir, *cntp;
+	char ***namesp;
+{
+	HANDLE dirhandle;
+	WIN32_FIND_DATA fdata;
+	int arraysz, cnt, ret;
+	char **names, *onename;
+	_TCHAR tfilespec[DB_MAXPATHLEN + 1];
+	_TCHAR *tdir;
+
+	*namesp = NULL;
+	*cntp = 0;
+
+	TO_TSTRING(env, dir, tdir, ret);
+	if (ret != 0)
+		return (ret);
+
+	(void)_sntprintf(tfilespec, DB_MAXPATHLEN,
+	    _T("%s%hc*"), tdir, PATH_SEPARATOR[0]);
+
+	/*
+	 * On WinCE, FindFirstFile will return INVALID_HANDLE_VALUE when
+	 * the searched directory is empty, and set last error to
+	 * ERROR_NO_MORE_FILES, on Windows it will return "." instead.
+	 */
+	if ((dirhandle =
+	    FindFirstFile(tfilespec, &fdata)) == INVALID_HANDLE_VALUE) {
+		if (GetLastError() == ERROR_NO_MORE_FILES)
+			return (0);
+		return (__os_posix_err(__os_get_syserr()));
+	}
+
+	names = NULL;
+	arraysz = cnt = ret = 0;
+	for (;;) {
+		if (returndir ||
+		    (fdata.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) == 0) {
+			if (fdata.cFileName[0] == _T('.') &&
+			    (fdata.cFileName[1] == _T('\0') ||
+			    (fdata.cFileName[1] == _T('.') &&
+			    fdata.cFileName[2] == _T('\0'))))
+				goto next;
+			if (cnt >= arraysz) {
+				arraysz += 100;
+				if ((ret = __os_realloc(env,
+				    arraysz * sizeof(names[0]), &names)) != 0)
+					goto err;
+			}
+			/*
+			 * FROM_TSTRING doesn't necessarily allocate new
+			 * memory, so we must do that explicitly.
+			 * Unfortunately, when compiled with UNICODE, we'll
+			 * copy twice.
+			 */
+			FROM_TSTRING(env, fdata.cFileName, onename, ret);
+			if (ret != 0)
+				goto err;
+			ret = __os_strdup(env, onename, &names[cnt]);
+			FREE_STRING(env, onename);
+			if (ret != 0)
+				goto err;
+			cnt++;
+		}
+next:
+		if (!FindNextFile(dirhandle, &fdata)) {
+			if (GetLastError() == ERROR_NO_MORE_FILES)
+				break;
+			else {
+				ret = __os_posix_err(__os_get_syserr());
+				goto err;
+			}
+		}
+	}
+
+err:	if (!FindClose(dirhandle) && ret == 0)
+		ret = __os_posix_err(__os_get_syserr());
+
+	if (ret == 0) {
+		*namesp = names;
+		*cntp = cnt;
+	} else if (names != NULL)
+		__os_dirfree(env, names, cnt);
+
+	FREE_STRING(env, tdir);
+
+	return (ret);
+}
+
+/*
+ * __os_dirfree --
+ *	Free the list of files.
+ */
+void
+__os_dirfree(env, names, cnt)
+	ENV *env;
+	char **names;
+	int cnt;
+{
+	while (cnt > 0)
+		__os_free(env, names[--cnt]);
+	__os_free(env, names);
+}
diff --git a/db-4.8.30/os_windows/os_errno.c b/db-4.8.30/os_windows/os_errno.c
new file mode 100644
index 0000000..35b540b
--- /dev/null
+++ b/db-4.8.30/os_windows/os_errno.c
@@ -0,0 +1,427 @@
+/*-
+ * See the file LICENSE for redistribution information.
+ *
+ * Copyright (c) 1999-2009 Oracle.  All rights reserved.
+ *
+ * $Id$
+ */
+
+#include "db_config.h"
+
+#include "db_int.h"
+
+/*
+ * __os_get_errno_ret_zero --
+ *	Return the last system error, including an error of zero.
+ */
+int
+__os_get_errno_ret_zero()
+{
+	/* This routine must be able to return the same value repeatedly. */
+	return (errno);
+}
+
+/*
+ * We've seen cases where system calls failed but errno was never set.  For
+ * that reason, __os_get_errno() and __os_get_syserr set errno to EAGAIN if
+ * it's not already set, to work around the problem.  For obvious reasons,
+ * we can only call this function if we know an error has occurred, that
+ * is, we can't test the return for a non-zero value after the get call.
+ *
+ * __os_get_errno --
+ *	Return the last ANSI C "errno" value or EAGAIN if the last error
+ *	is zero.
+ */
+int
+__os_get_errno()
+{
+	/* This routine must be able to return the same value repeatedly. */
+	if (errno == 0)
+		__os_set_errno(EAGAIN);
+	return (errno);
+}
+
+#ifdef HAVE_REPLICATION_THREADS
+/*
+ * __os_get_neterr --
+ *	Return the last networking error or EAGAIN if the last error is zero.
+ *
+ * PUBLIC: #ifdef HAVE_REPLICATION_THREADS
+ * PUBLIC: int __os_get_neterr __P((void));
+ * PUBLIC: #endif
+ */
+int
+__os_get_neterr()
+{
+	int err;
+
+	/* This routine must be able to return the same value repeatedly. */
+	err = WSAGetLastError();
+	if (err == 0)
+		WSASetLastError(err = ERROR_RETRY);
+	return (err);
+}
+#endif
+
+/*
+ * __os_get_syserr --
+ *	Return the last system error or EAGAIN if the last error is zero.
+ */
+int
+__os_get_syserr()
+{
+	int err;
+
+	/* This routine must be able to return the same value repeatedly. */
+	err = GetLastError();
+	if (err == 0)
+		SetLastError(err = ERROR_RETRY);
+	return (err);
+}
+
+/*
+ * __os_set_errno --
+ *	Set the value of errno.
+ */
+void
+__os_set_errno(evalue)
+	int evalue;
+{
+	/*
+	 * This routine is called by the compatibility interfaces (DB 1.85,
+	 * dbm and hsearch).  Force values > 0, that is, not one of DB 2.X
+	 * and later's public error returns.  If something bad has happened,
+	 * default to EFAULT -- a nasty return.  Otherwise, default to EINVAL.
+	 * As the compatibility APIs aren't included on Windows, the Windows
+	 * version of this routine doesn't need this behavior.
+	 */
+	errno =
+	    evalue >= 0 ? evalue : (evalue == DB_RUNRECOVERY ? EFAULT : EINVAL);
+}
+
+/*
+ * __os_strerror --
+ *	Return a string associated with the system error.
+ */
+char *
+__os_strerror(error, buf, len)
+	int error;
+	char *buf;
+	size_t len;
+{
+#ifdef DB_WINCE
+#define	MAX_TMPBUF_LEN 512
+	_TCHAR tbuf[MAX_TMPBUF_LEN];
+	size_t  maxlen;
+
+	DB_ASSERT(NULL, error != 0);
+
+	memset(tbuf, 0, sizeof(_TCHAR)*MAX_TMPBUF_LEN);
+	maxlen = (len > MAX_TMPBUF_LEN ? MAX_TMPBUF_LEN : len);
+	FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM, 0, (DWORD)error,
+		0, tbuf, maxlen-1, NULL);
+
+	if (WideCharToMultiByte(CP_UTF8, 0, tbuf, -1,
+		buf, len, 0, NULL) == 0)
+		strncpy(buf, "Error message translation failed.", len);
+#else
+	DB_ASSERT(NULL, error != 0);
+	/*
+	 * Explicitly call FormatMessageA, since we want to receive a char
+	 * string back, not a tchar string.
+	 */
+	FormatMessageA(FORMAT_MESSAGE_FROM_SYSTEM,
+	    0, (DWORD)error, 0, buf, (DWORD)(len - 1), NULL);
+	buf[len - 1] = '\0';
+#endif
+
+	return (buf);
+}
+
+/*
+ * __os_posix_err --
+ *	Convert a system error to a POSIX error.
+ */
+int
+__os_posix_err(error)
+	int error;
+{
+	/* Handle calls on successful returns. */
+	if (error == 0)
+		return (0);
+
+	/*
+	 * Translate the Windows error codes we care about.
+	 */
+	switch (error) {
+	case ERROR_INVALID_PARAMETER:
+		return (EINVAL);
+
+	case ERROR_FILE_NOT_FOUND:
+	case ERROR_INVALID_DRIVE:
+	case ERROR_PATH_NOT_FOUND:
+		return (ENOENT);
+
+	case ERROR_NO_MORE_FILES:
+	case ERROR_TOO_MANY_OPEN_FILES:
+		return (EMFILE);
+
+	case ERROR_ACCESS_DENIED:
+		return (EPERM);
+
+	case ERROR_INVALID_HANDLE:
+		return (EBADF);
+
+	case ERROR_NOT_ENOUGH_MEMORY:
+		return (ENOMEM);
+
+	case ERROR_DISK_FULL:
+		return (ENOSPC);
+
+	case ERROR_ARENA_TRASHED:
+	case ERROR_BAD_COMMAND:
+	case ERROR_BAD_ENVIRONMENT:
+	case ERROR_BAD_FORMAT:
+	case ERROR_GEN_FAILURE:
+	case ERROR_INVALID_ACCESS:
+	case ERROR_INVALID_BLOCK:
+	case ERROR_INVALID_DATA:
+	case ERROR_READ_FAULT:
+	case ERROR_WRITE_FAULT:
+		return (EFAULT);
+
+	case ERROR_ALREADY_EXISTS:
+	case ERROR_FILE_EXISTS:
+		return (EEXIST);
+
+	case ERROR_NOT_SAME_DEVICE:
+		return (EXDEV);
+
+	case ERROR_WRITE_PROTECT:
+		return (EACCES);
+
+	case ERROR_LOCK_FAILED:
+	case ERROR_LOCK_VIOLATION:
+	case ERROR_NOT_READY:
+	case ERROR_SHARING_VIOLATION:
+		return (EBUSY);
+
+	case ERROR_RETRY:
+		return (EINTR);
+	}
+
+	/*
+	 * Translate the Windows socket error codes.
+	 */
+	switch (error) {
+	case WSAEADDRINUSE:
+#ifdef EADDRINUSE
+		return (EADDRINUSE);
+#else
+		break;
+#endif
+	case WSAEADDRNOTAVAIL:
+#ifdef EADDRNOTAVAIL
+		return (EADDRNOTAVAIL);
+#else
+		break;
+#endif
+	case WSAEAFNOSUPPORT:
+#ifdef EAFNOSUPPORT
+		return (EAFNOSUPPORT);
+#else
+		break;
+#endif
+	case WSAEALREADY:
+#ifdef EALREADY
+		return (EALREADY);
+#else
+		break;
+#endif
+	case WSAEBADF:
+		return (EBADF);
+	case WSAECONNABORTED:
+#ifdef ECONNABORTED
+		return (ECONNABORTED);
+#else
+		break;
+#endif
+	case WSAECONNREFUSED:
+#ifdef ECONNREFUSED
+		return (ECONNREFUSED);
+#else
+		break;
+#endif
+	case WSAECONNRESET:
+#ifdef ECONNRESET
+		return (ECONNRESET);
+#else
+		break;
+#endif
+	case WSAEDESTADDRREQ:
+#ifdef EDESTADDRREQ
+		return (EDESTADDRREQ);
+#else
+		break;
+#endif
+	case WSAEFAULT:
+		return (EFAULT);
+	case WSAEHOSTDOWN:
+#ifdef EHOSTDOWN
+		return (EHOSTDOWN);
+#else
+		break;
+#endif
+	case WSAEHOSTUNREACH:
+#ifdef EHOSTUNREACH
+		return (EHOSTUNREACH);
+#else
+		break;
+#endif
+	case WSAEINPROGRESS:
+#ifdef EINPROGRESS
+		return (EINPROGRESS);
+#else
+		break;
+#endif
+	case WSAEINTR:
+		return (EINTR);
+	case WSAEINVAL:
+		return (EINVAL);
+	case WSAEISCONN:
+#ifdef EISCONN
+		return (EISCONN);
+#else
+		break;
+#endif
+	case WSAELOOP:
+#ifdef ELOOP
+		return (ELOOP);
+#else
+		break;
+#endif
+	case WSAEMFILE:
+		return (EMFILE);
+	case WSAEMSGSIZE:
+#ifdef EMSGSIZE
+		return (EMSGSIZE);
+#else
+		break;
+#endif
+	case WSAENAMETOOLONG:
+		return (ENAMETOOLONG);
+	case WSAENETDOWN:
+#ifdef ENETDOWN
+		return (ENETDOWN);
+#else
+		break;
+#endif
+	case WSAENETRESET:
+#ifdef ENETRESET
+		return (ENETRESET);
+#else
+		break;
+#endif
+	case WSAENETUNREACH:
+#ifdef ENETUNREACH
+		return (ENETUNREACH);
+#else
+		break;
+#endif
+	case WSAENOBUFS:
+#ifdef ENOBUFS
+		return (ENOBUFS);
+#else
+		break;
+#endif
+	case WSAENOPROTOOPT:
+#ifdef ENOPROTOOPT
+		return (ENOPROTOOPT);
+#else
+		break;
+#endif
+	case WSAENOTCONN:
+#ifdef ENOTCONN
+		return (ENOTCONN);
+#else
+		break;
+#endif
+	case WSANOTINITIALISED:
+		return (EAGAIN);
+	case WSAENOTSOCK:
+#ifdef ENOTSOCK
+		return (ENOTSOCK);
+#else
+		break;
+#endif
+	case WSAEOPNOTSUPP:
+		return (DB_OPNOTSUP);
+	case WSAEPFNOSUPPORT:
+#ifdef EPFNOSUPPORT
+		return (EPFNOSUPPORT);
+#else
+		break;
+#endif
+	case WSAEPROTONOSUPPORT:
+#ifdef EPROTONOSUPPORT
+		return (EPROTONOSUPPORT);
+#else
+		break;
+#endif
+	case WSAEPROTOTYPE:
+#ifdef EPROTOTYPE
+		return (EPROTOTYPE);
+#else
+		break;
+#endif
+	case WSAESHUTDOWN:
+#ifdef ESHUTDOWN
+		return (ESHUTDOWN);
+#else
+		break;
+#endif
+	case WSAESOCKTNOSUPPORT:
+#ifdef ESOCKTNOSUPPORT
+		return (ESOCKTNOSUPPORT);
+#else
+		break;
+#endif
+	case WSAETIMEDOUT:
+#ifdef ETIMEDOUT
+		return (ETIMEDOUT);
+#else
+		break;
+#endif
+	case WSAETOOMANYREFS:
+#ifdef ETOOMANYREFS
+		return (ETOOMANYREFS);
+#else
+		break;
+#endif
+	case WSAEWOULDBLOCK:
+#ifdef EWOULDBLOCK
+		return (EWOULDBLOCK);
+#else
+		return (EAGAIN);
+#endif
+	case WSAHOST_NOT_FOUND:
+#ifdef EHOSTUNREACH
+		return (EHOSTUNREACH);
+#else
+		break;
+#endif
+	case WSASYSNOTREADY:
+		return (EAGAIN);
+	case WSATRY_AGAIN:
+		return (EAGAIN);
+	case WSAVERNOTSUPPORTED:
+		return (DB_OPNOTSUP);
+	case WSAEACCES:
+		return (EACCES);
+	}
+
+	/*
+	 * EFAULT is the default if we don't have a translation.
+	 */
+	return (EFAULT);
+}
diff --git a/db-4.8.30/os_windows/os_fid.c b/db-4.8.30/os_windows/os_fid.c
new file mode 100644
index 0000000..3283ea5
--- /dev/null
+++ b/db-4.8.30/os_windows/os_fid.c
@@ -0,0 +1,129 @@
+/*-
+ * See the file LICENSE for redistribution information.
+ *
+ * Copyright (c) 1996-2009 Oracle.  All rights reserved.
+ *
+ * $Id$
+ */
+
+#include "db_config.h"
+
+#include "db_int.h"
+
+/*
+ * __os_fileid --
+ *	Return a unique identifier for a file.
+ */
+int
+__os_fileid(env, fname, unique_okay, fidp)
+	ENV *env;
+	const char *fname;
+	int unique_okay;
+	u_int8_t *fidp;
+{
+	pid_t pid;
+	size_t i;
+	u_int32_t tmp;
+	u_int8_t *p;
+	int ret;
+
+	/*
+	 * The documentation for GetFileInformationByHandle() states that the
+	 * inode-type numbers are not constant between processes.  Actually,
+	 * they are, they're the NTFS MFT indexes.  So, this works on NTFS,
+	 * but perhaps not on other platforms, and perhaps not over a network.
+	 * Can't think of a better solution right now.
+	 */
+	DB_FH *fhp;
+	BY_HANDLE_FILE_INFORMATION fi;
+	BOOL retval = FALSE;
+
+	DB_ASSERT(env, fname != NULL);
+
+	/* Clear the buffer. */
+	memset(fidp, 0, DB_FILE_ID_LEN);
+
+	/*
+	 * First we open the file, because we're not given a handle to it.
+	 * If we can't open it, we're in trouble.
+	 */
+	if ((ret = __os_open(env, fname, 0,
+	    DB_OSO_RDONLY, DB_MODE_400, &fhp)) != 0)
+		return (ret);
+
+	/* File open, get its info */
+	if ((retval = GetFileInformationByHandle(fhp->handle, &fi)) == FALSE)
+		ret = __os_get_syserr();
+	(void)__os_closehandle(env, fhp);
+
+	if (retval == FALSE)
+		return (__os_posix_err(ret));
+
+	/*
+	 * We want the three 32-bit words which tell us the volume ID and
+	 * the file ID.  We make a crude attempt to copy the bytes over to
+	 * the callers buffer.
+	 *
+	 * We don't worry about byte sexing or the actual variable sizes.
+	 *
+	 * When this routine is called from the DB access methods, it's only
+	 * called once -- whatever ID is generated when a database is created
+	 * is stored in the database file's metadata, and that is what is
+	 * saved in the mpool region's information to uniquely identify the
+	 * file.
+	 *
+	 * When called from the mpool layer this routine will be called each
+	 * time a new thread of control wants to share the file, which makes
+	 * things tougher.  As far as byte sexing goes, since the mpool region
+	 * lives on a single host, there's no issue of that -- the entire
+	 * region is byte sex dependent.  As far as variable sizes go, we make
+	 * the simplifying assumption that 32-bit and 64-bit processes will
+	 * get the same 32-bit values if we truncate any returned 64-bit value
+	 * to a 32-bit value.
+	 */
+	tmp = (u_int32_t)fi.nFileIndexLow;
+	for (p = (u_int8_t *)&tmp, i = sizeof(u_int32_t); i > 0; --i)
+		*fidp++ = *p++;
+	tmp = (u_int32_t)fi.nFileIndexHigh;
+	for (p = (u_int8_t *)&tmp, i = sizeof(u_int32_t); i > 0; --i)
+		*fidp++ = *p++;
+
+	if (unique_okay) {
+		/* Add in 32-bits of (hopefully) unique number. */
+		__os_unique_id(env, &tmp);
+		for (p = (u_int8_t *)&tmp, i = sizeof(u_int32_t); i > 0; --i)
+			*fidp++ = *p++;
+
+		/*
+		 * Initialize/increment the serial number we use to help
+		 * avoid fileid collisions.  Note we don't bother with
+		 * locking; it's unpleasant to do from down in here, and
+		 * if we race on this no real harm will be done, since the
+		 * finished fileid has so many other components.
+		 *
+		 * We use the bottom 32-bits of the process ID, hoping they
+		 * are more random than the top 32-bits (should we be on a
+		 * machine with 64-bit process IDs).
+		 *
+		 * We increment by 100000 on each call as a simple way of
+		 * randomizing; simply incrementing seems potentially less
+		 * useful if pids are also simply incremented, since this
+		 * is process-local and we may be one of a set of processes
+		 * starting up.  100000 pushes us out of pid space on most
+		 * 32-bit platforms, and has few interesting properties in
+		 * base 2.
+		 */
+		if (DB_GLOBAL(fid_serial) == 0) {
+			__os_id(env->dbenv, &pid, NULL);
+			DB_GLOBAL(fid_serial) = (u_int32_t)pid;
+		} else
+			DB_GLOBAL(fid_serial) += 100000;
+
+	} else {
+		tmp = (u_int32_t)fi.dwVolumeSerialNumber;
+		for (p = (u_int8_t *)&tmp, i = sizeof(u_int32_t); i > 0; --i)
+			*fidp++ = *p++;
+	}
+
+	return (0);
+}
diff --git a/db-4.8.30/os_windows/os_flock.c b/db-4.8.30/os_windows/os_flock.c
new file mode 100644
index 0000000..df2492f
--- /dev/null
+++ b/db-4.8.30/os_windows/os_flock.c
@@ -0,0 +1,88 @@
+/*-
+ * See the file LICENSE for redistribution information.
+ *
+ * Copyright (c) 1997-2009 Oracle.  All rights reserved.
+ *
+ * $Id$
+ */
+
+#include "db_config.h"
+
+#include "db_int.h"
+
+/*
+ * __os_fdlock --
+ *	Acquire/release a lock on a byte in a file.
+ */
+int
+__os_fdlock(env, fhp, offset, acquire, nowait)
+	ENV *env;
+	DB_FH *fhp;
+	int acquire, nowait;
+	off_t offset;
+{
+#ifdef DB_WINCE
+	/*
+	 * This functionality is not supported by WinCE, so just fail.
+	 *
+	 * Should only happen if an app attempts to open an environment
+	 * with the DB_REGISTER flag.
+	 */
+	 __db_errx(env, "fdlock API not implemented for WinCE, DB_REGISTER "
+	     "environment flag not supported.");
+	return (EFAULT);
+#else
+	DWORD low, high;
+	DB_ENV *dbenv;
+	OVERLAPPED over;
+	int ret;
+
+	dbenv = env == NULL ? NULL : env->dbenv;
+
+	DB_ASSERT(env,
+	    F_ISSET(fhp, DB_FH_OPENED) && fhp->handle != INVALID_HANDLE_VALUE);
+
+	if (dbenv != NULL && FLD_ISSET(dbenv->verbose, DB_VERB_FILEOPS_ALL))
+		__db_msg(env,
+		    "fileops: flock %s %s offset %lu",
+		    fhp->name, acquire ? "acquire": "release", (u_long)offset);
+
+	/*
+	 * Windows file locking interferes with read/write operations, so we
+	 * map the ranges to an area past the end of the file.
+	 */
+	DB_ASSERT(env, offset < (u_int64_t)INT64_MAX);
+	offset = UINT64_MAX - offset;
+	low = (DWORD)offset;
+	high = (DWORD)(offset >> 32);
+
+	if (acquire) {
+		if (nowait)
+			RETRY_CHK_EINTR_ONLY(
+			    !LockFile(fhp->handle, low, high, 1, 0), ret);
+		else if (__os_is_winnt()) {
+			memset(&over, 0, sizeof(over));
+			over.Offset = low;
+			over.OffsetHigh = high;
+			RETRY_CHK_EINTR_ONLY(
+			    !LockFileEx(fhp->handle, LOCKFILE_EXCLUSIVE_LOCK,
+			    0, 1, 0, &over),
+			    ret);
+		} else {
+			/* Windows 9x/ME doesn't support a blocking call. */
+			for (;;) {
+				RETRY_CHK_EINTR_ONLY(
+				    !LockFile(fhp->handle, low, high, 1, 0),
+				    ret);
+				if (__os_posix_err(ret) != EAGAIN)
+					break;
+				__os_yield(env, 1, 0);
+			}
+		}
+	} else
+		RETRY_CHK_EINTR_ONLY(
+		    !UnlockFile(fhp->handle, low, high, 1, 0), ret);
+
+	return (__os_posix_err(ret));
+#endif
+}
diff --git a/db-4.8.30/os_windows/os_fsync.c b/db-4.8.30/os_windows/os_fsync.c
new file mode 100644
index 0000000..0e57cb4
--- /dev/null
+++ b/db-4.8.30/os_windows/os_fsync.c
@@ -0,0 +1,43 @@
+/*-
+ * See the file LICENSE for redistribution information.
+ *
+ * Copyright (c) 1997-2009 Oracle.  All rights reserved.
+ *
+ * $Id$
+ */
+
+#include "db_config.h"
+
+#include "db_int.h"
+
+/*
+ * __os_fsync --
+ *	Flush a file descriptor.
+ */
+int
+__os_fsync(env, fhp)
+	ENV *env;
+	DB_FH *fhp;
+{
+	DB_ENV *dbenv;
+	int ret;
+
+	dbenv = env == NULL ? NULL : env->dbenv;
+
+	/*
+	 * Do nothing if the file descriptor has been marked as not requiring
+	 * any sync to disk.
+	 */
+	if (F_ISSET(fhp, DB_FH_NOSYNC))
+		return (0);
+
+	if (dbenv != NULL && FLD_ISSET(dbenv->verbose, DB_VERB_FILEOPS_ALL))
+		__db_msg(env, "fileops: flush %s", fhp->name);
+
+	RETRY_CHK((!FlushFileBuffers(fhp->handle)), ret);
+	if (ret != 0) {
+		__db_syserr(env, ret, "FlushFileBuffers");
+		ret = __os_posix_err(ret);
+	}
+	return (ret);
+}
diff --git a/db-4.8.30/os_windows/os_getenv.c b/db-4.8.30/os_windows/os_getenv.c
new file mode 100644
index 0000000..0f4cb12
--- /dev/null
+++ b/db-4.8.30/os_windows/os_getenv.c
@@ -0,0 +1,102 @@
+/*-
+ * See the file LICENSE for redistribution information.
+ *
+ * Copyright (c) 1997-2009 Oracle.  All rights reserved.
+ *
+ * $Id$
+ */
+
+#include "db_config.h"
+
+#include "db_int.h"
+
+/*
+ * __os_getenv --
+ *	Retrieve an environment variable.
+ */
+int
+__os_getenv(env, name, bpp, buflen)
+	ENV *env;
+	const char *name;
+	char **bpp;
+	size_t buflen;
+{
+#ifdef DB_WINCE
+	COMPQUIET(name, NULL);
+	/* WinCE does not have a getenv implementation. */
+	return (0);
+#else
+	_TCHAR *tname, tbuf[1024];
+	int ret;
+	char *p;
+
+	/*
+	 * If there's a value and the buffer is large enough:
+	 *	copy value into the pointer, return 0
+	 * If there's a value and the buffer is too short:
+	 *	set pointer to NULL, return EINVAL
+	 * If there's no value:
+	 *	set pointer to NULL, return 0
+	 */
+	if ((p = getenv(name)) != NULL) {
+		if (strlen(p) < buflen) {
+			(void)strcpy(*bpp, p);
+			return (0);
+		}
+		goto small_buf;
+	}
+
+	TO_TSTRING(env, name, tname, ret);
+	if (ret != 0)
+		return (ret);
+	/*
+	 * The declared size of the tbuf buffer limits the maximum environment
+	 * variable size in Berkeley DB on Windows.  If that's too small, or if
+	 * we need to get rid of large allocations on the BDB stack, we should
+	 * malloc the tbuf memory.
+	 */
+	ret = GetEnvironmentVariable(tname, tbuf, sizeof(tbuf));
+	FREE_STRING(env, tname);
+
+	/*
+	 * If GetEnvironmentVariable succeeds, the return value is the number
+	 * of characters stored in the buffer pointed to by lpBuffer, not
+	 * including the terminating null character.  If the buffer is not
+	 * large enough to hold the data, the return value is the buffer size,
+	 * in characters, required to hold the string and its terminating null
+	 * character.  If GetEnvironmentVariable fails, the return value is
+	 * zero.  If the specified environment variable was not found in the
+	 * environment block, GetLastError returns ERROR_ENVVAR_NOT_FOUND.
+	 */
+	if (ret == 0) {
+		if ((ret = __os_get_syserr()) == ERROR_ENVVAR_NOT_FOUND) {
+			*bpp = NULL;
+			return (0);
+		}
+		__db_syserr(env, ret, "GetEnvironmentVariable");
+		return (__os_posix_err(ret));
+	}
+	if (ret > (int)sizeof(tbuf))
+		goto small_buf;
+
+	FROM_TSTRING(env, tbuf, p, ret);
+	if (ret != 0)
+		return (ret);
+	if (strlen(p) < buflen)
+		(void)strcpy(*bpp, p);
+	else
+		*bpp = NULL;
+	FREE_STRING(env, p);
+	if (*bpp == NULL)
+		goto small_buf;
+
+	return (0);
+
+small_buf:
+	*bpp = NULL;
+	__db_errx(env,
+	    "%s: buffer too small to hold environment variable %s",
+	    name, p);
+	return (EINVAL);
+#endif
+}
diff --git a/db-4.8.30/os_windows/os_handle.c b/db-4.8.30/os_windows/os_handle.c
new file mode 100644
index 0000000..74681e3
--- /dev/null
+++ b/db-4.8.30/os_windows/os_handle.c
@@ -0,0 +1,165 @@
+/*-
+ * See the file LICENSE for redistribution information.
+ *
+ * Copyright (c) 1998-2009 Oracle.  All rights reserved.
+ *
+ * $Id$
+ */
+
+#include "db_config.h"
+
+#include "db_int.h"
+
+/*
+ * __os_openhandle --
+ *	Open a file, using POSIX 1003.1 open flags.
+ */
+int
+__os_openhandle(env, name, flags, mode, fhpp)
+	ENV *env;
+	const char *name;
+	int flags, mode;
+	DB_FH **fhpp;
+{
+#ifdef DB_WINCE
+	/*
+	 * __os_openhandle API is not implemented on WinCE.
+	 * It is not currently called from within the Berkeley DB library,
+	 * so don't log the failure via the __db_err mechanism.
+	 */
+	return (EFAULT);
+#else
+	DB_FH *fhp;
+	int ret, nrepeat, retries;
+
+	/*
+	 * Allocate the file handle and copy the file name.  We generally only
+	 * use the name for verbose or error messages, but on systems where we
+	 * can't unlink temporary files immediately, we use the name to unlink
+	 * the temporary file when the file handle is closed.
+	 *
+	 * Lock the ENV handle and insert the new file handle on the list.
+	 */
+	if ((ret = __os_calloc(env, 1, sizeof(DB_FH), &fhp)) != 0)
+		return (ret);
+	if ((ret = __os_strdup(env, name, &fhp->name)) != 0)
+		goto err;
+	if (env != NULL) {
+		MUTEX_LOCK(env, env->mtx_env);
+		TAILQ_INSERT_TAIL(&env->fdlist, fhp, q);
+		MUTEX_UNLOCK(env, env->mtx_env);
+		F_SET(fhp, DB_FH_ENVLINK);
+	}
+
+	retries = 0;
+	for (nrepeat = 1; nrepeat < 4; ++nrepeat) {
+		fhp->fd = _open(name, flags, mode);
+
+		if (fhp->fd != -1) {
+			ret = 0;
+			break;
+		}
+
+		switch (ret = __os_posix_err(__os_get_syserr())) {
+		case EMFILE:
+		case ENFILE:
+		case ENOSPC:
+			/*
+			 * If it's a "temporary" error, we retry up to 3 times,
+			 * waiting up to 12 seconds.  While it's not a problem
+			 * if we can't open a database, an inability to open a
+			 * log file is cause for serious dismay.
+			 */
+			__os_yield(env, nrepeat * 2, 0);
+			break;
+		case EAGAIN:
+		case EBUSY:
+		case EINTR:
+			/*
+			 * If an EAGAIN, EBUSY or EINTR, retry immediately for
+			 * DB_RETRY times.
+			 */
+			if (++retries < DB_RETRY)
+				--nrepeat;
+			break;
+		default:
+			/* Open is silent on error. */
+			goto err;
+		}
+	}
+
+	if (ret == 0) {
+		F_SET(fhp, DB_FH_OPENED);
+		*fhpp = fhp;
+		return (0);
+	}
+
+err:	(void)__os_closehandle(env, fhp);
+	return (ret);
+#endif
+}
+
+/*
+ * __os_closehandle --
+ *	Close a file.
+ */
+int
+__os_closehandle(env, fhp)
+	ENV *env;
+	DB_FH *fhp;
+{
+	DB_ENV *dbenv;
+	int ret, t_ret;
+
+	ret = 0;
+
+	if (env != NULL) {
+		dbenv = env->dbenv;
+		if (fhp->name != NULL && FLD_ISSET(
+		    dbenv->verbose, DB_VERB_FILEOPS | DB_VERB_FILEOPS_ALL))
+			__db_msg(env, "fileops: %s: close", fhp->name);
+
+		if (F_ISSET(fhp, DB_FH_ENVLINK)) {
+			/*
+			 * Lock the ENV handle and remove this file
+			 * handle from the list.
+			 */
+			MUTEX_LOCK(env, env->mtx_env);
+			TAILQ_REMOVE(&env->fdlist, fhp, q);
+			MUTEX_UNLOCK(env, env->mtx_env);
+		}
+	}
+
+	/* Discard any underlying system file reference. */
+	if (F_ISSET(fhp, DB_FH_OPENED)) {
+		if (fhp->handle != INVALID_HANDLE_VALUE)
+			RETRY_CHK((!CloseHandle(fhp->handle)), ret);
+		else
+#ifdef DB_WINCE
+			ret = EFAULT;
+#else
+			RETRY_CHK((_close(fhp->fd)), ret);
+#endif
+
+		if (fhp->trunc_handle != INVALID_HANDLE_VALUE) {
+			RETRY_CHK((!CloseHandle(fhp->trunc_handle)), t_ret);
+			if (t_ret != 0 && ret == 0)
+				ret = t_ret;
+		}
+
+		if (ret != 0) {
+			__db_syserr(env, ret, "CloseHandle");
+			ret = __os_posix_err(ret);
+		}
+	}
+
+	/* Unlink the file if we haven't already done so. */
+	if (F_ISSET(fhp, DB_FH_UNLINK))
+		(void)__os_unlink(env, fhp->name, 0);
+
+	if (fhp->name != NULL)
+		__os_free(env, fhp->name);
+	__os_free(env, fhp);
+
+	return (ret);
+}
diff --git a/db-4.8.30/os_windows/os_map.c b/db-4.8.30/os_windows/os_map.c
new file mode 100644
index 0000000..0889969
--- /dev/null
+++ b/db-4.8.30/os_windows/os_map.c
@@ -0,0 +1,362 @@
+/*-
+ * See the file LICENSE for redistribution information.
+ *
+ * Copyright (c) 1996-2009 Oracle.  All rights reserved.
+ *
+ * $Id$
+ */
+
+#include "db_config.h"
+
+#include "db_int.h"
+
+static int __os_map
+  __P((ENV *, char *, REGINFO *, DB_FH *, size_t, int, int, int, void **));
+static int __os_unique_name __P((_TCHAR *, HANDLE, _TCHAR *, size_t));
+
+/*
+ * __os_attach --
+ *	Create/join a shared memory region.
+ */
+int
+__os_attach(env, infop, rp)
+	ENV *env;
+	REGINFO *infop;
+	REGION *rp;
+{
+	DB_FH *fhp;
+	int ret;
+
+	/*
+	 * On Windows/9X, files that are opened by multiple processes do not
+	 * share data correctly.  For this reason, we require that DB_PRIVATE
+	 * be specified on that platform.
+	 */
+	if (!F_ISSET(env, ENV_PRIVATE) && __os_is_winnt() == 0) {
+		__db_err(env,
+		    EINVAL, "Windows 9X systems must specify DB_PRIVATE");
+		return (EINVAL);
+	}
+
+	/*
+	 * Try to open/create the file.  We DO NOT need to ensure that multiple
+	 * threads/processes attempting to simultaneously create the region are
+	 * properly ordered, our caller has already taken care of that.
+	 */
+	if ((ret = __os_open(env, infop->name, 0, DB_OSO_REGION |
+	    (F_ISSET(infop, REGION_CREATE_OK) ? DB_OSO_CREATE : 0),
+	    env->db_mode, &fhp)) != 0) {
+		__db_err(env, ret, "%s", infop->name);
+		return (ret);
+	}
+
+	/*
+	 * Map the file in.  If we're creating an in-system-memory region,
+	 * specify a segment ID (which is never used again) so that the
+	 * calling code writes out the REGENV_REF structure to the primary
+	 * environment file.
+	 */
+	ret = __os_map(env, infop->name, infop, fhp, rp->size,
+	   1, F_ISSET(env, ENV_SYSTEM_MEM), 0, &infop->addr);
+	if (ret == 0 && F_ISSET(env, ENV_SYSTEM_MEM))
+		rp->segid = 1;
+
+	(void)__os_closehandle(env, fhp);
+
+	return (ret);
+}
+
+/*
+ * __os_detach --
+ *	Detach from a shared memory region.
+ */
+int
+__os_detach(env, infop, destroy)
+	ENV *env;
+	REGINFO *infop;
+	int destroy;
+{
+	DB_ENV *dbenv;
+	int ret, t_ret;
+
+	dbenv = env->dbenv;
+
+	if (infop->wnt_handle != NULL) {
+		(void)CloseHandle(infop->wnt_handle);
+		infop->wnt_handle = NULL;
+	}
+
+	ret = !UnmapViewOfFile(infop->addr) ? __os_get_syserr() : 0;
+	if (ret != 0) {
+		__db_syserr(env, ret, "UnmapViewOfFile");
+		ret = __os_posix_err(ret);
+	}
+
+	if (!F_ISSET(env, ENV_SYSTEM_MEM) && destroy &&
+	    (t_ret = __os_unlink(env, infop->name, 1)) != 0 && ret == 0)
+		ret = t_ret;
+
+	return (ret);
+}
+
+/*
+ * __os_mapfile --
+ *	Map in a shared memory file.
+ */
+int
+__os_mapfile(env, path, fhp, len, is_rdonly, addr)
+	ENV *env;
+	char *path;
+	DB_FH *fhp;
+	int is_rdonly;
+	size_t len;
+	void **addr;
+{
+#ifdef DB_WINCE
+	/*
+	 * Windows CE has special requirements for file mapping to work.
+	 * * The input handle needs to be opened using CreateFileForMapping
+	 * * Concurrent access via a non mapped file is not supported.
+	 * So we disable support for memory mapping files on Windows CE. It is
+	 * currently only used as an optimization in mpool for small read only
+	 * databases.
+	 */
+	return (EFAULT);
+#else
+	DB_ENV *dbenv;
+
+	dbenv = env == NULL ? NULL : env->dbenv;
+
+	if (dbenv != NULL &&
+	    FLD_ISSET(dbenv->verbose, DB_VERB_FILEOPS | DB_VERB_FILEOPS_ALL))
+		__db_msg(env, "fileops: mmap %s", path);
+	return (__os_map(env, path, NULL, fhp, len, 0, 0, is_rdonly, addr));
+#endif
+}
+
+/*
+ * __os_unmapfile --
+ *	Unmap the shared memory file.
+ */
+int
+__os_unmapfile(env, addr, len)
+	ENV *env;
+	void *addr;
+	size_t len;
+{
+	DB_ENV *dbenv;
+
+	dbenv = env == NULL ? NULL : env->dbenv;
+
+	if (dbenv != NULL &&
+	    FLD_ISSET(dbenv->verbose, DB_VERB_FILEOPS | DB_VERB_FILEOPS_ALL))
+		__db_msg(env, "fileops: munmap");
+
+	return (!UnmapViewOfFile(addr) ? __os_posix_err(__os_get_syserr()) : 0);
+}
+
+/*
+ * __os_unique_name --
+ *	Create a unique identifying name from a pathname (may be absolute or
+ *	relative) and/or a file descriptor.
+ *
+ *	The name returned must be unique (different files map to different
+ *	names), and repeatable (same files, map to same names).  It's not
+ *	so easy to do by name.  Should handle not only:
+ *
+ *		foo.bar == ./foo.bar == c:/whatever_path/foo.bar
+ *
+ *	but also understand that:
+ *
+ *		foo.bar == Foo.Bar	(FAT file system)
+ *		foo.bar != Foo.Bar	(NTFS)
+ *
+ *	The best solution is to use the file index, found in the file
+ *	information structure (similar to UNIX inode #).
+ *
+ *	When a file is deleted, its file index may be reused,
+ *	but if the unique name has not gone from its namespace,
+ *	we may get a conflict.  So to ensure some tie in to the
+ *	original pathname, we also use the creation time and the
+ *	file basename.  This is not a perfect system, but it
+ *	should work for all but anamolous test cases.
+ *
+ */
+static int
+__os_unique_name(orig_path, hfile, result_path, result_path_len)
+	_TCHAR *orig_path, *result_path;
+	HANDLE hfile;
+	size_t result_path_len;
+{
+	BY_HANDLE_FILE_INFORMATION fileinfo;
+	_TCHAR *basename, *p;
+
+	/*
+	 * In Windows, pathname components are delimited by '/' or '\', and
+	 * if neither is present, we need to strip off leading drive letter
+	 * (e.g. c:foo.txt).
+	 */
+	basename = _tcsrchr(orig_path, '/');
+	p = _tcsrchr(orig_path, '\\');
+	if (basename == NULL || (p != NULL && p > basename))
+		basename = p;
+	if (basename == NULL)
+		basename = _tcsrchr(orig_path, ':');
+
+	if (basename == NULL)
+		basename = orig_path;
+	else
+		basename++;
+
+	if (!GetFileInformationByHandle(hfile, &fileinfo))
+		return (__os_posix_err(__os_get_syserr()));
+
+	(void)_sntprintf(result_path, result_path_len,
+	    _T("__db_shmem.%8.8lx.%8.8lx.%8.8lx.%8.8lx.%8.8lx.%s"),
+	    fileinfo.dwVolumeSerialNumber,
+	    fileinfo.nFileIndexHigh,
+	    fileinfo.nFileIndexLow,
+	    fileinfo.ftCreationTime.dwHighDateTime,
+	    fileinfo.ftCreationTime.dwHighDateTime,
+	    basename);
+
+	return (0);
+}
+
+/*
+ * __os_map --
+ *	The mmap(2) function for Windows.
+ */
+static int
+__os_map(env, path, infop, fhp, len, is_region, is_system, is_rdonly, addr)
+	ENV *env;
+	REGINFO *infop;
+	char *path;
+	DB_FH *fhp;
+	int is_region, is_system, is_rdonly;
+	size_t len;
+	void **addr;
+{
+	HANDLE hMemory;
+	int ret, use_pagefile;
+	_TCHAR *tpath, shmem_name[DB_MAXPATHLEN];
+	void *pMemory;
+	unsigned __int64 len64;
+
+	ret = 0;
+	if (infop != NULL)
+		infop->wnt_handle = NULL;
+
+	/*
+	 * On 64 bit systems, len is already a 64 bit value.
+	 * On 32 bit systems len is a 32 bit value.
+	 * Always convert to a 64 bit value, so that the high order
+	 * DWORD can be simply extracted on 64 bit platforms.
+	 */
+	len64 = len;
+
+	use_pagefile = is_region && is_system;
+
+	/*
+	 * If creating a region in system space, get a matching name in the
+	 * paging file namespace.
+	 */
+	if (use_pagefile) {
+#ifdef DB_WINCE
+		__db_errx(env, "Unable to memory map regions using system "
+		    "memory on WinCE.");
+		return (EFAULT);
+#endif
+		TO_TSTRING(env, path, tpath, ret);
+		if (ret != 0)
+			return (ret);
+		ret = __os_unique_name(tpath, fhp->handle,
+		    shmem_name, sizeof(shmem_name));
+		FREE_STRING(env, tpath);
+		if (ret != 0)
+			return (ret);
+	}
+
+	/*
+	 * XXX
+	 * DB: We have not implemented copy-on-write here.
+	 *
+	 * If this is an region in system memory, we try to open it using the
+	 * OpenFileMapping() first, and only call CreateFileMapping() if we're
+	 * really creating the section.  There are two reasons:
+	 *
+	 * 1) We only create the mapping if we have newly created the region.
+	 *    This avoids a long-running problem caused by Windows reference
+	 *    counting, where regions that are closed by all processes are
+	 *    deleted.  It turns out that just checking for a zeroed region
+	 *    is not good enough. See [#4882] and [#7127] for the details.
+	 *
+	 * 2) CreateFileMapping seems to mess up making the commit charge to
+	 *    the process. It thinks, incorrectly, that when we want to join a
+	 *    previously existing section, that it should make a commit charge
+	 *    for the whole section.  In fact, there is no new committed memory
+	 *    whatever.  The call can fail if there is insufficient memory free
+	 *    to handle the erroneous commit charge.  So, we find that the
+	 *    bogus commit is not made if we call OpenFileMapping.
+	 */
+	hMemory = NULL;
+	if (use_pagefile) {
+#ifndef DB_WINCE
+		hMemory = OpenFileMapping(
+		    is_rdonly ? FILE_MAP_READ : FILE_MAP_ALL_ACCESS,
+		    0, shmem_name);
+
+		if (hMemory == NULL && F_ISSET(infop, REGION_CREATE_OK))
+			hMemory = CreateFileMapping((HANDLE)-1, 0,
+			    is_rdonly ? PAGE_READONLY : PAGE_READWRITE,
+			    (DWORD)(len64 >> 32), (DWORD)len64, shmem_name);
+#endif
+	} else {
+		hMemory = CreateFileMapping(fhp->handle, 0,
+		    is_rdonly ? PAGE_READONLY : PAGE_READWRITE,
+		    (DWORD)(len64 >> 32), (DWORD)len64, NULL);
+#ifdef DB_WINCE
+		/*
+		 * WinCE automatically closes the handle passed in.
+		 * Ensure DB does not attempt to close the handle again.
+		 */
+		fhp->handle = INVALID_HANDLE_VALUE;
+		F_CLR(fhp, DB_FH_OPENED);
+#endif
+	}
+
+	if (hMemory == NULL) {
+		ret = __os_get_syserr();
+		__db_syserr(env, ret, "OpenFileMapping");
+		return (__env_panic(env, __os_posix_err(ret)));
+	}
+
+	pMemory = MapViewOfFile(hMemory,
+	    (is_rdonly ? FILE_MAP_READ : FILE_MAP_ALL_ACCESS), 0, 0, len);
+	if (pMemory == NULL) {
+		ret = __os_get_syserr();
+		__db_syserr(env, ret, "MapViewOfFile");
+		return (__env_panic(env, __os_posix_err(ret)));
+	}
+
+	/*
+	 * XXX
+	 * It turns out that the kernel object underlying the named section
+	 * is reference counted, but that the call to MapViewOfFile() above
+	 * does NOT increment the reference count! So, if we close the handle
+	 * here, the kernel deletes the object from the kernel namespace.
+	 * When a second process comes along to join the region, the kernel
+	 * happily creates a new object with the same name, but completely
+	 * different identity. The two processes then have distinct isolated
+	 * mapped sections, not at all what was wanted. Not closing the handle
+	 * here fixes this problem.  We carry the handle around in the region
+	 * structure so we can close it when unmap is called.
+	 */
+	if (use_pagefile && infop != NULL)
+		infop->wnt_handle = hMemory;
+	else
+		CloseHandle(hMemory);
+
+	*addr = pMemory;
+	return (ret);
+}
diff --git a/db-4.8.30/os_windows/os_mkdir.c b/db-4.8.30/os_windows/os_mkdir.c
new file mode 100644
index 0000000..b739986
--- /dev/null
+++ b/db-4.8.30/os_windows/os_mkdir.c
@@ -0,0 +1,43 @@
+/*-
+ * See the file LICENSE for redistribution information.
+ *
+ * Copyright (c) 1997-2009 Oracle.  All rights reserved.
+ *
+ * $Id$
+ */
+
+#include "db_config.h"
+
+#include "db_int.h"
+
+/*
+ * __os_mkdir --
+ *	Create a directory.
+ */
+int
+__os_mkdir(env, name, mode)
+	ENV *env;
+	const char *name;
+	int mode;
+{
+	DB_ENV *dbenv;
+	_TCHAR *tname;
+	int ret;
+
+	dbenv = env == NULL ? NULL : env->dbenv;
+
+	if (dbenv != NULL &&
+	    FLD_ISSET(dbenv->verbose, DB_VERB_FILEOPS | DB_VERB_FILEOPS_ALL))
+		__db_msg(env, "fileops: mkdir %s", name);
+
+	/* Make the directory, with paranoid permissions. */
+	TO_TSTRING(env, name, tname, ret);
+	if (ret != 0)
+		return (ret);
+	RETRY_CHK(!CreateDirectory(tname, NULL), ret);
+	FREE_STRING(env, tname);
+	if (ret != 0)
+		return (__os_posix_err(ret));
+
+	return (ret);
+}
diff --git a/db-4.8.30/os_windows/os_open.c b/db-4.8.30/os_windows/os_open.c
new file mode 100644
index 0000000..e15222f
--- /dev/null
+++ b/db-4.8.30/os_windows/os_open.c
@@ -0,0 +1,255 @@
+/*-
+ * See the file LICENSE for redistribution information.
+ *
+ * Copyright (c) 1997-2009 Oracle.  All rights reserved.
+ *
+ * $Id$
+ */
+
+#include "db_config.h"
+
+#include "db_int.h"
+
+/*
+ * __os_open --
+ *	Open a file descriptor (including page size and log size information).
+ */
+int
+__os_open(env, name, page_size, flags, mode, fhpp)
+	ENV *env;
+	const char *name;
+	u_int32_t page_size, flags;
+	int mode;
+	DB_FH **fhpp;
+{
+	DB_ENV *dbenv;
+	DB_FH *fhp;
+#ifndef DB_WINCE
+	DWORD cluster_size, sector_size, free_clusters, total_clusters;
+	_TCHAR *drive, dbuf[4]; /* <letter><colon><slash><nul> */
+#endif
+	int access, attr, createflag, nrepeat, ret, share;
+	_TCHAR *tname;
+
+	dbenv = env == NULL ? NULL : env->dbenv;
+	*fhpp = NULL;
+	tname = NULL;
+
+	if (dbenv != NULL &&
+	    FLD_ISSET(dbenv->verbose, DB_VERB_FILEOPS | DB_VERB_FILEOPS_ALL))
+		__db_msg(env, "fileops: open %s", name);
+
+#define	OKFLAGS								\
+	(DB_OSO_ABSMODE | DB_OSO_CREATE | DB_OSO_DIRECT | DB_OSO_DSYNC |\
+	DB_OSO_EXCL | DB_OSO_RDONLY | DB_OSO_REGION |	DB_OSO_SEQ |	\
+	DB_OSO_TEMP | DB_OSO_TRUNC)
+	if ((ret = __db_fchk(env, "__os_open", flags, OKFLAGS)) != 0)
+		return (ret);
+
+	TO_TSTRING(env, name, tname, ret);
+	if (ret != 0)
+		goto err;
+
+	/*
+	 * Allocate the file handle and copy the file name.  We generally only
+	 * use the name for verbose or error messages, but on systems where we
+	 * can't unlink temporary files immediately, we use the name to unlink
+	 * the temporary file when the file handle is closed.
+	 *
+	 * Lock the ENV handle and insert the new file handle on the list.
+	 */
+	if ((ret = __os_calloc(env, 1, sizeof(DB_FH), &fhp)) != 0)
+		return (ret);
+	if ((ret = __os_strdup(env, name, &fhp->name)) != 0)
+		goto err;
+	if (env != NULL) {
+		MUTEX_LOCK(env, env->mtx_env);
+		TAILQ_INSERT_TAIL(&env->fdlist, fhp, q);
+		MUTEX_UNLOCK(env, env->mtx_env);
+		F_SET(fhp, DB_FH_ENVLINK);
+	}
+
+	/*
+	 * Otherwise, use the Windows/32 CreateFile interface so that we can
+	 * play magic games with files to get data flush effects similar to
+	 * the POSIX O_DSYNC flag.
+	 *
+	 * !!!
+	 * We currently ignore the 'mode' argument.  It would be possible
+	 * to construct a set of security attributes that we could pass to
+	 * CreateFile that would accurately represents the mode.  In worst
+	 * case, this would require looking up user and all group names and
+	 * creating an entry for each.  Alternatively, we could call the
+	 * _chmod (partial emulation) function after file creation, although
+	 * this leaves us with an obvious race.  However, these efforts are
+	 * largely meaningless on FAT, the most common file system, which
+	 * only has a "readable" and "writeable" flag, applying to all users.
+	 */
+	access = GENERIC_READ;
+	if (!LF_ISSET(DB_OSO_RDONLY))
+		access |= GENERIC_WRITE;
+
+#ifdef DB_WINCE
+	/*
+	 * WinCE translates these flags into share flags for
+	 * CreateFileForMapping.
+	 * Also WinCE does not support the FILE_SHARE_DELETE flag.
+	 */
+	if (LF_ISSET(DB_OSO_REGION))
+		share = GENERIC_READ | GENERIC_WRITE;
+	else
+		share = FILE_SHARE_READ | FILE_SHARE_WRITE;
+#else
+	share = FILE_SHARE_READ | FILE_SHARE_WRITE;
+	if (__os_is_winnt())
+		share |= FILE_SHARE_DELETE;
+#endif
+	attr = FILE_ATTRIBUTE_NORMAL;
+
+	/*
+	 * Reproduce POSIX 1003.1 semantics: if O_CREATE and O_EXCL are both
+	 * specified, fail, returning EEXIST, unless we create the file.
+	 */
+	if (LF_ISSET(DB_OSO_CREATE) && LF_ISSET(DB_OSO_EXCL))
+		createflag = CREATE_NEW;	/* create only if !exist*/
+	else if (!LF_ISSET(DB_OSO_CREATE) && LF_ISSET(DB_OSO_TRUNC))
+		createflag = TRUNCATE_EXISTING; /* truncate, fail if !exist */
+	else if (LF_ISSET(DB_OSO_TRUNC))
+		createflag = CREATE_ALWAYS;	/* create and truncate */
+	else if (LF_ISSET(DB_OSO_CREATE))
+		createflag = OPEN_ALWAYS;	/* open or create */
+	else
+		createflag = OPEN_EXISTING;	/* open only if existing */
+
+	if (LF_ISSET(DB_OSO_DSYNC)) {
+		F_SET(fhp, DB_FH_NOSYNC);
+		attr |= FILE_FLAG_WRITE_THROUGH;
+	}
+
+#ifndef DB_WINCE
+	if (LF_ISSET(DB_OSO_SEQ))
+		attr |= FILE_FLAG_SEQUENTIAL_SCAN;
+	else
+		attr |= FILE_FLAG_RANDOM_ACCESS;
+#endif
+
+	if (LF_ISSET(DB_OSO_TEMP))
+		attr |= FILE_FLAG_DELETE_ON_CLOSE;
+
+	/*
+	 * We can turn filesystem buffering off if the page size is a
+	 * multiple of the disk's sector size. To find the sector size,
+	 * we call GetDiskFreeSpace, which expects a drive name like "d:\\"
+	 * or NULL for the current disk (i.e., a relative path).
+	 *
+	 * WinCE only has GetDiskFreeSpaceEx which does not
+	 * return the sector size.
+	 */
+#ifndef DB_WINCE
+	if (LF_ISSET(DB_OSO_DIRECT) && page_size != 0 && name[0] != '\0') {
+		if (name[1] == ':') {
+			drive = dbuf;
+			_sntprintf(dbuf, sizeof(dbuf), _T("%c:\\"), tname[0]);
+		} else
+			drive = NULL;
+
+		/*
+		 * We ignore all results except sectorsize, but some versions
+		 * of Windows require that the parameters are non-NULL.
+		 */
+		if (GetDiskFreeSpace(drive, &cluster_size,
+		    &sector_size, &free_clusters, &total_clusters) &&
+		    page_size % sector_size == 0)
+			attr |= FILE_FLAG_NO_BUFFERING;
+	}
+#endif
+
+	fhp->handle = fhp->trunc_handle = INVALID_HANDLE_VALUE;
+	for (nrepeat = 1;; ++nrepeat) {
+		if (fhp->handle == INVALID_HANDLE_VALUE) {
+#ifdef DB_WINCE
+			if (LF_ISSET(DB_OSO_REGION))
+				fhp->handle = CreateFileForMapping(tname,
+				    access, share, NULL, createflag, attr, 0);
+			else
+#endif
+				fhp->handle = CreateFile(tname,
+				    access, share, NULL, createflag, attr, 0);
+		}
+
+#ifdef HAVE_FTRUNCATE
+		/*
+		 * Older versions of WinCE may not support truncate, if so, the
+		 * HAVE_FTRUNCATE macro should be #undef'ed, and we
+		 * don't need to open this second handle.
+		 *
+		 * WinCE dose not support opening a second handle on the same
+		 * file via CreateFileForMapping, but this dose not matter
+		 * since we are not truncating region files but database files.
+		 *
+		 * But some older versions of WinCE even
+		 * dose not allow a second handle opened via CreateFile. If
+		 * this is the case, users will need to #undef the
+		 * HAVE_FTRUNCATE macro in build_wince/db_config.h.
+		 */
+
+		/*
+		 * Windows does not provide truncate directly.  There is no
+		 * safe way to use a handle for truncate concurrently with
+		 * reads or writes.  To deal with this, we open a second handle
+		 * used just for truncating.
+		 */
+		if (fhp->handle != INVALID_HANDLE_VALUE &&
+		    !LF_ISSET(DB_OSO_RDONLY | DB_OSO_TEMP) &&
+		    fhp->trunc_handle == INVALID_HANDLE_VALUE
+#ifdef DB_WINCE
+		    /* Do not open trunc handle for region files. */
+		    && (!LF_ISSET(DB_OSO_REGION))
+#endif
+		    )
+			fhp->trunc_handle = CreateFile(
+			    tname, access, share, NULL, OPEN_EXISTING, attr, 0);
+#endif
+
+#ifndef HAVE_FTRUNCATE
+		if (fhp->handle == INVALID_HANDLE_VALUE)
+#else
+		if (fhp->handle == INVALID_HANDLE_VALUE ||
+		    (!LF_ISSET(DB_OSO_RDONLY | DB_OSO_TEMP) &&
+		    fhp->trunc_handle == INVALID_HANDLE_VALUE
+#ifdef DB_WINCE
+		    /* Do not open trunc handle for region files. */
+		    && (!LF_ISSET(DB_OSO_REGION))
+#endif
+		    ))
+#endif
+		{
+			/*
+			 * If it's a "temporary" error, we retry up to 3 times,
+			 * waiting up to 12 seconds.  While it's not a problem
+			 * if we can't open a database, an inability to open a
+			 * log file is cause for serious dismay.
+			 */
+			ret = __os_posix_err(__os_get_syserr());
+			if ((ret != ENFILE && ret != EMFILE && ret != ENOSPC) ||
+			    nrepeat > 3)
+				goto err;
+
+			__os_yield(env, nrepeat * 2, 0);
+		} else
+			break;
+	}
+
+	FREE_STRING(env, tname);
+
+	if (LF_ISSET(DB_OSO_REGION))
+		F_SET(fhp, DB_FH_REGION);
+	F_SET(fhp, DB_FH_OPENED);
+	*fhpp = fhp;
+	return (0);
+
+err:	FREE_STRING(env, tname);
+	if (fhp != NULL)
+		(void)__os_closehandle(env, fhp);
+	return (ret);
+}
diff --git a/db-4.8.30/os_windows/os_rename.c b/db-4.8.30/os_windows/os_rename.c
new file mode 100644
index 0000000..9312d8a
--- /dev/null
+++ b/db-4.8.30/os_windows/os_rename.c
@@ -0,0 +1,81 @@
+/*-
+ * See the file LICENSE for redistribution information.
+ *
+ * Copyright (c) 1997-2009 Oracle.  All rights reserved.
+ *
+ * $Id$
+ */
+
+#include "db_config.h"
+
+#include "db_int.h"
+
+/*
+ * __os_rename --
+ *	Rename a file.
+ */
+int
+__os_rename(env, oldname, newname, silent)
+	ENV *env;
+	const char *oldname, *newname;
+	u_int32_t silent;
+{
+	DB_ENV *dbenv;
+	_TCHAR *toldname, *tnewname;
+	int ret;
+
+	dbenv = env == NULL ? NULL : env->dbenv;
+
+	if (dbenv != NULL &&
+	    FLD_ISSET(dbenv->verbose, DB_VERB_FILEOPS | DB_VERB_FILEOPS_ALL))
+		__db_msg(env, "fileops: rename %s to %s", oldname, newname);
+
+	TO_TSTRING(env, oldname, toldname, ret);
+	if (ret != 0)
+		return (ret);
+	TO_TSTRING(env, newname, tnewname, ret);
+	if (ret != 0) {
+		FREE_STRING(env, toldname);
+		return (ret);
+	}
+
+	LAST_PANIC_CHECK_BEFORE_IO(env);
+
+	if (!MoveFile(toldname, tnewname))
+		ret = __os_get_syserr();
+
+	if (__os_posix_err(ret) == EEXIST) {
+		ret = 0;
+#ifndef DB_WINCE
+		if (__os_is_winnt()) {
+			if (!MoveFileEx(
+			    toldname, tnewname, MOVEFILE_REPLACE_EXISTING))
+				ret = __os_get_syserr();
+		} else
+#endif
+		{
+			/*
+			 * There is no MoveFileEx for Win9x/Me/CE, so we have to
+			 * do the best we can.  Note that the MoveFile call
+			 * above would have succeeded if oldname and newname
+			 * refer to the same file, so we don't need to check
+			 * that here.
+			 */
+			(void)DeleteFile(tnewname);
+			if (!MoveFile(toldname, tnewname))
+				ret = __os_get_syserr();
+		}
+	}
+
+	FREE_STRING(env, tnewname);
+	FREE_STRING(env, toldname);
+
+	if (ret != 0) {
+		if (silent == 0)
+			__db_syserr(
+			    env, ret, "MoveFileEx %s %s", oldname, newname);
+		ret = __os_posix_err(ret);
+	}
+
+	return (ret);
+}
diff --git a/db-4.8.30/os_windows/os_rw.c b/db-4.8.30/os_windows/os_rw.c
new file mode 100644
index 0000000..5e46e03
--- /dev/null
+++ b/db-4.8.30/os_windows/os_rw.c
@@ -0,0 +1,215 @@
+/*-
+ * See the file LICENSE for redistribution information.
+ *
+ * Copyright (c) 1997-2009 Oracle.  All rights reserved.
+ *
+ * $Id$
+ */
+
+#include "db_config.h"
+
+#include "db_int.h"
+
+/*
+ * __os_io --
+ *	Do an I/O.
+ */
+int
+__os_io(env, op, fhp, pgno, pgsize, relative, io_len, buf, niop)
+	ENV *env;
+	int op;
+	DB_FH *fhp;
+	db_pgno_t pgno;
+	u_int32_t pgsize, relative, io_len;
+	u_int8_t *buf;
+	size_t *niop;
+{
+	int ret;
+
+#ifndef DB_WINCE
+	if (__os_is_winnt()) {
+		DB_ENV *dbenv;
+		DWORD nbytes;
+		OVERLAPPED over;
+		ULONG64 off;
+		dbenv = env == NULL ? NULL : env->dbenv;
+		if ((off = relative) == 0)
+			off = (ULONG64)pgsize * pgno;
+		over.Offset = (DWORD)(off & 0xffffffff);
+		over.OffsetHigh = (DWORD)(off >> 32);
+		over.hEvent = 0; /* we don't want asynchronous notifications */
+
+		if (dbenv != NULL &&
+		    FLD_ISSET(dbenv->verbose, DB_VERB_FILEOPS_ALL))
+			__db_msg(env,
+			    "fileops: %s %s: %lu bytes at offset %lu",
+			    op == DB_IO_READ ? "read" : "write",
+			    fhp->name, (u_long)io_len, (u_long)off);
+
+		LAST_PANIC_CHECK_BEFORE_IO(env);
+
+		switch (op) {
+		case DB_IO_READ:
+#if defined(HAVE_STATISTICS)
+			++fhp->read_count;
+#endif
+			if (!ReadFile(fhp->handle,
+			    buf, (DWORD)io_len, &nbytes, &over))
+				goto slow;
+			break;
+		case DB_IO_WRITE:
+#ifdef HAVE_FILESYSTEM_NOTZERO
+			if (__os_fs_notzero())
+				goto slow;
+#endif
+#if defined(HAVE_STATISTICS)
+			++fhp->write_count;
+#endif
+			if (!WriteFile(fhp->handle,
+			    buf, (DWORD)io_len, &nbytes, &over))
+				goto slow;
+			break;
+		}
+		if (nbytes == io_len) {
+			*niop = (size_t)nbytes;
+			return (0);
+		}
+	}
+
+slow:
+#endif
+	MUTEX_LOCK(env, fhp->mtx_fh);
+
+	if ((ret = __os_seek(env, fhp, pgno, pgsize, relative)) != 0)
+		goto err;
+
+	switch (op) {
+	case DB_IO_READ:
+		ret = __os_read(env, fhp, buf, io_len, niop);
+		break;
+	case DB_IO_WRITE:
+		ret = __os_write(env, fhp, buf, io_len, niop);
+		break;
+	}
+
+err:	MUTEX_UNLOCK(env, fhp->mtx_fh);
+
+	return (ret);
+}
+
+/*
+ * __os_read --
+ *	Read from a file handle.
+ */
+int
+__os_read(env, fhp, addr, len, nrp)
+	ENV *env;
+	DB_FH *fhp;
+	void *addr;
+	size_t len;
+	size_t *nrp;
+{
+	DB_ENV *dbenv;
+	DWORD count;
+	size_t offset, nr;
+	u_int8_t *taddr;
+	int ret;
+
+	dbenv = env == NULL ? NULL : env->dbenv;
+	ret = 0;
+
+#if defined(HAVE_STATISTICS)
+	++fhp->read_count;
+#endif
+	if (dbenv != NULL && FLD_ISSET(dbenv->verbose, DB_VERB_FILEOPS_ALL))
+		__db_msg(env,
+		    "fileops: read %s: %lu bytes", fhp->name, (u_long)len);
+
+	for (taddr = addr,
+	    offset = 0; offset < len; taddr += nr, offset += nr) {
+		LAST_PANIC_CHECK_BEFORE_IO(env);
+		RETRY_CHK((!ReadFile(fhp->handle,
+		    taddr, (DWORD)(len - offset), &count, NULL)), ret);
+		if (count == 0 || ret != 0)
+			break;
+		nr = (size_t)count;
+	}
+	*nrp = taddr - (u_int8_t *)addr;
+	if (ret != 0) {
+		__db_syserr(env, ret, "read: 0x%lx, %lu",
+		    P_TO_ULONG(taddr), (u_long)len - offset);
+		ret = __os_posix_err(ret);
+	}
+	return (ret);
+}
+
+/*
+ * __os_write --
+ *	Write to a file handle.
+ */
+int
+__os_write(env, fhp, addr, len, nwp)
+	ENV *env;
+	DB_FH *fhp;
+	void *addr;
+	size_t len;
+	size_t *nwp;
+{
+	int ret;
+
+#ifdef HAVE_FILESYSTEM_NOTZERO
+	/* Zero-fill as necessary. */
+	if (__os_fs_notzero() &&
+	    (ret = __db_zero_fill(env, fhp)) != 0)
+		return (ret);
+#endif
+	return (__os_physwrite(env, fhp, addr, len, nwp));
+}
+
+/*
+ * __os_physwrite --
+ *	Physical write to a file handle.
+ */
+int
+__os_physwrite(env, fhp, addr, len, nwp)
+	ENV *env;
+	DB_FH *fhp;
+	void *addr;
+	size_t len;
+	size_t *nwp;
+{
+	DB_ENV *dbenv;
+	DWORD count;
+	size_t offset, nw;
+	u_int8_t *taddr;
+	int ret;
+
+	dbenv = env == NULL ? NULL : env->dbenv;
+	ret = 0;
+
+#if defined(HAVE_STATISTICS)
+	++fhp->write_count;
+#endif
+	if (dbenv != NULL && FLD_ISSET(dbenv->verbose, DB_VERB_FILEOPS_ALL))
+		__db_msg(env,
+		    "fileops: write %s: %lu bytes", fhp->name, (u_long)len);
+
+	for (taddr = addr,
+	    offset = 0; offset < len; taddr += nw, offset += nw) {
+		LAST_PANIC_CHECK_BEFORE_IO(env);
+		RETRY_CHK((!WriteFile(fhp->handle,
+		    taddr, (DWORD)(len - offset), &count, NULL)), ret);
+		if (ret != 0)
+			break;
+		nw = (size_t)count;
+	}
+	*nwp = len;
+	if (ret != 0) {
+		__db_syserr(env, ret, "write: %#lx, %lu",
+		    P_TO_ULONG(taddr), (u_long)len - offset);
+		ret = __os_posix_err(ret);
+
+		DB_EVENT(env, DB_EVENT_WRITE_FAILED, NULL);
+	}
+	return (ret);
+}
diff --git a/db-4.8.30/os_windows/os_seek.c b/db-4.8.30/os_windows/os_seek.c
new file mode 100644
index 0000000..be689b9
--- /dev/null
+++ b/db-4.8.30/os_windows/os_seek.c
@@ -0,0 +1,65 @@
+/*-
+ * See the file LICENSE for redistribution information.
+ *
+ * Copyright (c) 1997-2009 Oracle.  All rights reserved.
+ *
+ * $Id$
+ */
+
+#include "db_config.h"
+
+#include "db_int.h"
+
+/*
+ * __os_seek --
+ *	Seek to a page/byte offset in the file.
+ */
+int
+__os_seek(env, fhp, pgno, pgsize, relative)
+	ENV *env;
+	DB_FH *fhp;
+	db_pgno_t pgno;
+	u_int32_t pgsize;
+	u_int32_t relative;
+{
+	/* Yes, this really is how Microsoft designed their API. */
+	union {
+		__int64 bigint;
+		struct {
+			unsigned long low;
+			long high;
+		};
+	} offbytes;
+	DB_ENV *dbenv;
+	off_t offset;
+	int ret;
+
+	dbenv = env == NULL ? NULL : env->dbenv;
+
+#if defined(HAVE_STATISTICS)
+	++fhp->seek_count;
+#endif
+
+	offset = (off_t)pgsize * pgno + relative;
+
+	if (dbenv != NULL && FLD_ISSET(dbenv->verbose, DB_VERB_FILEOPS_ALL))
+		__db_msg(env,
+		    "fileops: seek %s to %lu", fhp->name, (u_long)offset);
+
+	offbytes.bigint = offset;
+	ret = (SetFilePointer(fhp->handle, offbytes.low,
+	    &offbytes.high, FILE_BEGIN) == (DWORD)-1) ? __os_get_syserr() : 0;
+
+	if (ret == 0) {
+		fhp->pgsize = pgsize;
+		fhp->pgno = pgno;
+		fhp->offset = relative;
+	} else {
+		__db_syserr(env, ret,
+		    "seek: %lu: (%lu * %lu) + %lu", (u_long)offset,
+		    (u_long)pgno, (u_long)pgsize, (u_long)relative);
+		ret = __os_posix_err(ret);
+	}
+
+	return (ret);
+}
diff --git a/db-4.8.30/os_windows/os_stat.c b/db-4.8.30/os_windows/os_stat.c
new file mode 100644
index 0000000..0f40a05
--- /dev/null
+++ b/db-4.8.30/os_windows/os_stat.c
@@ -0,0 +1,90 @@
+/*-
+ * See the file LICENSE for redistribution information.
+ *
+ * Copyright (c) 1997-2009 Oracle.  All rights reserved.
+ *
+ * $Id$
+ */
+
+#include "db_config.h"
+
+#include "db_int.h"
+
+/*
+ * __os_exists --
+ *	Return if the file exists.
+ */
+int
+__os_exists(env, path, isdirp)
+	ENV *env;
+	const char *path;
+	int *isdirp;
+{
+	DB_ENV *dbenv;
+	DWORD attrs;
+	_TCHAR *tpath;
+	int ret;
+
+	dbenv = env == NULL ? NULL : env->dbenv;
+
+	TO_TSTRING(env, path, tpath, ret);
+	if (ret != 0)
+		return (ret);
+
+	if (dbenv != NULL &&
+	    FLD_ISSET(dbenv->verbose, DB_VERB_FILEOPS | DB_VERB_FILEOPS_ALL))
+		__db_msg(env, "fileops: stat %s", path);
+
+	RETRY_CHK(
+	    ((attrs = GetFileAttributes(tpath)) == (DWORD)-1 ? 1 : 0), ret);
+	if (ret == 0) {
+		if (isdirp != NULL)
+			*isdirp = (attrs & FILE_ATTRIBUTE_DIRECTORY);
+	} else
+		ret = __os_posix_err(ret);
+
+	FREE_STRING(env, tpath);
+	return (ret);
+}
+
+/*
+ * __os_ioinfo --
+ *	Return file size and I/O size; abstracted to make it easier
+ *	to replace.
+ */
+int
+__os_ioinfo(env, path, fhp, mbytesp, bytesp, iosizep)
+	ENV *env;
+	const char *path;
+	DB_FH *fhp;
+	u_int32_t *mbytesp, *bytesp, *iosizep;
+{
+	int ret;
+	BY_HANDLE_FILE_INFORMATION bhfi;
+	unsigned __int64 filesize;
+
+	RETRY_CHK((!GetFileInformationByHandle(fhp->handle, &bhfi)), ret);
+	if (ret != 0) {
+		__db_syserr(env, ret, "GetFileInformationByHandle");
+		return (__os_posix_err(ret));
+	}
+
+	filesize = ((unsigned __int64)bhfi.nFileSizeHigh << 32) +
+	    bhfi.nFileSizeLow;
+
+	/* Return the size of the file. */
+	if (mbytesp != NULL)
+		*mbytesp = (u_int32_t)(filesize / MEGABYTE);
+	if (bytesp != NULL)
+		*bytesp = (u_int32_t)(filesize % MEGABYTE);
+
+	/*
+	 * The filesystem I/O size is not easily available.  In particular,
+	 * the values returned by GetDiskFreeSpace() are not very helpful
+	 * (NTFS volumes often report 512B clusters, which are too small to
+	 * be a useful default).
+	 */
+	if (iosizep != NULL)
+		*iosizep = DB_DEF_IOSIZE;
+	return (0);
+}
diff --git a/db-4.8.30/os_windows/os_truncate.c b/db-4.8.30/os_windows/os_truncate.c
new file mode 100644
index 0000000..b35233b
--- /dev/null
+++ b/db-4.8.30/os_windows/os_truncate.c
@@ -0,0 +1,98 @@
+/*-
+ * See the file LICENSE for redistribution information.
+ *
+ * Copyright (c) 2004-2009 Oracle.  All rights reserved.
+ *
+ * $Id$
+ */
+
+#include "db_config.h"
+
+#include "db_int.h"
+
+/*
+ * __os_truncate --
+ *	Truncate the file.
+ */
+int
+__os_truncate(env, fhp, pgno, pgsize)
+	ENV *env;
+	DB_FH *fhp;
+	db_pgno_t pgno;
+	u_int32_t pgsize;
+{
+	/* Yes, this really is how Microsoft have designed their API */
+	union {
+		__int64 bigint;
+		struct {
+			unsigned long low;
+			long high;
+		};
+	} off;
+	DB_ENV *dbenv;
+	off_t offset;
+	int ret;
+
+	dbenv = env == NULL ? NULL : env->dbenv;
+	offset = (off_t)pgsize * pgno;
+	ret = 0;
+
+	if (dbenv != NULL &&
+	    FLD_ISSET(dbenv->verbose, DB_VERB_FILEOPS | DB_VERB_FILEOPS_ALL))
+		__db_msg(env,
+		    "fileops: truncate %s to %lu", fhp->name, (u_long)offset);
+
+#ifdef HAVE_FILESYSTEM_NOTZERO
+	/*
+	 * If the filesystem doesn't zero fill, it isn't safe to extend the
+	 * file, or we end up with junk blocks.  Just return in that case.
+	 */
+	if (__os_fs_notzero()) {
+		off_t stat_offset;
+		u_int32_t mbytes, bytes;
+
+		/* Stat the file. */
+		if ((ret =
+		    __os_ioinfo(env, NULL, fhp, &mbytes, &bytes, NULL)) != 0)
+			return (ret);
+		stat_offset = (off_t)mbytes * MEGABYTE + bytes;
+
+		if (offset > stat_offset)
+			return (0);
+	}
+#endif
+
+	LAST_PANIC_CHECK_BEFORE_IO(env);
+
+	/*
+	 * Windows doesn't provide truncate directly.  Instead, it has
+	 * SetEndOfFile, which truncates to the current position.  To
+	 * deal with that, we open a duplicate file handle for truncating.
+	 *
+	 * We want to retry the truncate call, which involves a SetFilePointer
+	 * and a SetEndOfFile, but there are several complications:
+	 *
+	 * 1) since the Windows API deals in 32-bit values, it's possible that
+	 *    the return from SetFilePointer (the low 32-bits) is
+	 *    INVALID_SET_FILE_POINTER even when the call has succeeded.  So we
+	 *    have to also check whether GetLastError() returns NO_ERROR.
+	 *
+	 * 2) when it returns, SetFilePointer overwrites the high bits of the
+	 *    offset, so if we need to retry, we have to reset the offset each
+	 *    time.
+	 *
+	 * We can't switch to SetFilePointerEx, which knows about 64-bit
+	 * offsets, because it isn't supported on Win9x/ME.
+	 */
+	RETRY_CHK((off.bigint = (__int64)pgsize * pgno,
+	    (SetFilePointer(fhp->trunc_handle, off.low, &off.high, FILE_BEGIN)
+	    == INVALID_SET_FILE_POINTER && GetLastError() != NO_ERROR) ||
+	    !SetEndOfFile(fhp->trunc_handle)), ret);
+
+	if (ret != 0) {
+		__db_syserr(env, ret, "SetFilePointer: %lu", pgno * pgsize);
+		ret = __os_posix_err(ret);
+	}
+
+	return (ret);
+}
diff --git a/db-4.8.30/os_windows/os_unlink.c b/db-4.8.30/os_windows/os_unlink.c
new file mode 100644
index 0000000..7b5544c
--- /dev/null
+++ b/db-4.8.30/os_windows/os_unlink.c
@@ -0,0 +1,108 @@
+/*-
+ * See the file LICENSE for redistribution information.
+ *
+ * Copyright (c) 1997-2009 Oracle.  All rights reserved.
+ *
+ * $Id$
+ */
+
+#include "db_config.h"
+
+#include "db_int.h"
+
+/*
+ * __os_unlink --
+ *	Remove a file.
+ */
+int
+__os_unlink(env, path, overwrite_test)
+	ENV *env;
+	const char *path;
+	int overwrite_test;
+{
+	DB_ENV *dbenv;
+	HANDLE h;
+	_TCHAR *tpath, *orig_tpath, buf[DB_MAXPATHLEN];
+	u_int32_t id;
+	int ret, t_ret;
+
+	dbenv = env == NULL ? NULL : env->dbenv;
+
+	if (dbenv != NULL &&
+	    FLD_ISSET(dbenv->verbose, DB_VERB_FILEOPS | DB_VERB_FILEOPS_ALL))
+		__db_msg(env, "fileops: unlink %s", path);
+
+	/* Optionally overwrite the contents of the file to enhance security. */
+	if (dbenv != NULL && overwrite_test && F_ISSET(dbenv, DB_ENV_OVERWRITE))
+		(void)__db_file_multi_write(env, path);
+
+	TO_TSTRING(env, path, tpath, ret);
+	if (ret != 0)
+		return (ret);
+	orig_tpath = tpath;
+
+	LAST_PANIC_CHECK_BEFORE_IO(env);
+
+	/*
+	 * Windows NT and its descendants allow removal of open files, but the
+	 * DeleteFile Win32 system call isn't equivalent to a POSIX unlink.
+	 * Firstly, it only succeeds if FILE_SHARE_DELETE is set when the file
+	 * is opened.  Secondly, it leaves the file in a "zombie" state, where
+	 * it can't be opened again, but a new file with the same name can't be
+	 * created either.
+	 *
+	 * Since we depend on being able to recreate files (during recovery,
+	 * say), we have to first rename the file, and then delete it.  It
+	 * still hangs around, but with a name we don't care about.  The rename
+	 * will fail if the file doesn't exist, which isn't a problem, but if
+	 * it fails for some other reason, we need to know about it or a
+	 * subsequent open may fail for no apparent reason.
+	 */
+	if (__os_is_winnt()) {
+		__os_unique_id(env, &id);
+		_sntprintf(buf, DB_MAXPATHLEN, _T("%s.del.%010u"), tpath, id);
+		if (MoveFile(tpath, buf))
+			tpath = buf;
+		else {
+			ret = __os_get_syserr();
+			if (__os_posix_err(ret) != ENOENT)
+				__db_err(env, ret,
+				    "MoveFile: rename %s to temporary file",
+				    path);
+		}
+
+		/*
+		 * Try removing the file using the delete-on-close flag.  This
+		 * plays nicer with files that are still open than DeleteFile.
+		 */
+		h = CreateFile(tpath, 0,
+		    FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE,
+		    NULL, OPEN_EXISTING, FILE_FLAG_DELETE_ON_CLOSE, 0);
+		if (h != INVALID_HANDLE_VALUE) {
+			(void)CloseHandle (h);
+			if (GetFileAttributes(tpath) == INVALID_FILE_ATTRIBUTES)
+				goto skipdel;
+		}
+	}
+
+	RETRY_CHK((!DeleteFile(tpath)), ret);
+
+skipdel:
+	FREE_STRING(env, orig_tpath);
+
+	/*
+	 * XXX
+	 * We shouldn't be testing for an errno of ENOENT here, but ENOENT
+	 * signals that a file is missing, and we attempt to unlink things
+	 * (such as v. 2.x environment regions, in ENV->remove) that we
+	 * are expecting not to be there.  Reporting errors in these cases
+	 * is annoying.
+	 */
+	if (ret != 0) {
+		if ((t_ret = __os_posix_err(ret)) != ENOENT)
+			__db_syserr(env, ret, "DeleteFile: %s", path);
+		ret = t_ret;
+	}
+
+	return (ret);
+}
diff --git a/db-4.8.30/os_windows/os_yield.c b/db-4.8.30/os_windows/os_yield.c
new file mode 100644
index 0000000..3d07386
--- /dev/null
+++ b/db-4.8.30/os_windows/os_yield.c
@@ -0,0 +1,35 @@
+/*-
+ * See the file LICENSE for redistribution information.
+ *
+ * Copyright (c) 1997-2009 Oracle.  All rights reserved.
+ *
+ * $Id$
+ */
+
+#include "db_config.h"
+
+#include "db_int.h"
+
+/*
+ * __os_yield --
+ *	Yield the processor, optionally pausing until running again.
+ */
+void
+__os_yield(env, secs, usecs)
+	ENV *env;
+	u_long secs, usecs;		/* Seconds and microseconds. */
+{
+	COMPQUIET(env, NULL);
+
+	/* Don't require the values be normalized. */
+	for (; usecs >= US_PER_SEC; usecs -= US_PER_SEC)
+		++secs;
+
+	/*
+	 * Yield the processor so other processes or threads can run.
+	 *
+	 * Sheer raving paranoia -- don't sleep for 0 time, in case some
+	 * implementation doesn't yield the processor in that case.
+	 */
+	Sleep(secs * MS_PER_SEC + (usecs / US_PER_MS) + 1);
+}
-- 
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