diff --git a/src/sbbs3/smbwrap.c b/src/sbbs3/smbwrap.c
new file mode 100644
index 0000000000000000000000000000000000000000..89cde5d35e35a7b7ae983fd282b28f667c5f3e9b
--- /dev/null
+++ b/src/sbbs3/smbwrap.c
@@ -0,0 +1,100 @@
+/* smbwrap.c */
+
+/* Synchronet SMBLIB system-call wrappers */
+
+/* $Id$ */
+
+/****************************************************************************
+ * @format.tab-size 4 (Plain Text/Source Code File Header) *
+ * @format.use-tabs true (see http://www.synchro.net/ptsc_hdr.html) *
+ * *
+ * Copyright 2000 Rob Swindell - http://www.synchro.net/copyright.html *
+ * *
+ * This program is free software; you can redistribute it and/or *
+ * modify it under the terms of the GNU General Public License *
+ * as published by the Free Software Foundation; either version 2 *
+ * of the License, or (at your option) any later version. *
+ * See the GNU General Public License for more details: gpl.txt or *
+ * http://www.fsf.org/copyleft/gpl.html *
+ * *
+ * Anonymous FTP access to the most recent released source is available at *
+ * ftp://vert.synchro.net, ftp://cvs.synchro.net and ftp://ftp.synchro.net *
+ * *
+ * Anonymous CVS access to the development source and modification history *
+ * is available at cvs.synchro.net:/cvsroot/sbbs, example: *
+ * cvs -d :pserver:anonymous@cvs.synchro.net:/cvsroot/sbbs login *
+ * (just hit return, no password is necessary) *
+ * cvs -d :pserver:anonymous@cvs.synchro.net:/cvsroot/sbbs checkout src *
+ * *
+ * For Synchronet coding style and modification guidelines, see *
+ * http://www.synchro.net/source.html *
+ * *
+ * You are encouraged to submit any modifications (preferably in Unix diff *
+ * format) via e-mail to mods@synchro.net *
+ * *
+ * Note: If this box doesn't appear square, then you need to fix your tabs. *
+ ****************************************************************************/
+
+#if defined(__unix__)
+
+#include <unistd.h>
+#include <fcntl.h>
+
+/* Sets a lock on a portion of a file */
+int lock(int fd, int pos, int len)
+{
+ return 0;
+}
+
+/* Removes a lock from a file record */
+int unlock(int fd, int pos, int len)
+{
+ return 0;
+}
+
+/* Opens a file in specified sharing (file-locking) mode */
+int sopen(char *fn, int access, int share, int perm)
+{
+ return 0;
+}
+
+#elif defined _MSC_VER || defined __MINGW32__
+
+#include <io.h> /* tell */
+#include <stdio.h> /* SEEK_SET */
+#include <sys/locking.h> /* _locking */
+
+/* Fix MinGW locking.h typo */
+#if defined LK_UNLOCK && !defined LK_UNLCK
+ #define LK_UNLCK LK_UNLOCK
+#endif
+
+int lock(int file, long offset, int size)
+{
+ int i;
+ long pos;
+
+ pos=tell(file);
+ if(offset!=pos)
+ lseek(file, offset, SEEK_SET);
+ i=_locking(file,LK_NBLCK,size);
+ if(offset!=pos)
+ lseek(file, pos, SEEK_SET);
+ return(i);
+}
+
+int unlock(int file, long offset, int size)
+{
+ int i;
+ long pos;
+
+ pos=tell(file);
+ if(offset!=pos)
+ lseek(file, offset, SEEK_SET);
+ i=_locking(file,LK_UNLCK,size);
+ if(offset!=pos)
+ lseek(file, pos, SEEK_SET);
+ return(i);
+}
+
+#endif /* !Unix && (MSVC || MinGW) */
\ No newline at end of file
diff --git a/src/sbbs3/smbwrap.h b/src/sbbs3/smbwrap.h
new file mode 100644
index 0000000000000000000000000000000000000000..6c47926e78cf5f982add01909ec2e3a70504731d
--- /dev/null
+++ b/src/sbbs3/smbwrap.h
@@ -0,0 +1,95 @@
+/* smbwrap.h */
+
+/* Synchronet SMBLIB system-call wrappers */
+
+/* $Id$ */
+
+/****************************************************************************
+ * @format.tab-size 4 (Plain Text/Source Code File Header) *
+ * @format.use-tabs true (see http://www.synchro.net/ptsc_hdr.html) *
+ * *
+ * Copyright 2000 Rob Swindell - http://www.synchro.net/copyright.html *
+ * *
+ * This program is free software; you can redistribute it and/or *
+ * modify it under the terms of the GNU General Public License *
+ * as published by the Free Software Foundation; either version 2 *
+ * of the License, or (at your option) any later version. *
+ * See the GNU General Public License for more details: gpl.txt or *
+ * http://www.fsf.org/copyleft/gpl.html *
+ * *
+ * Anonymous FTP access to the most recent released source is available at *
+ * ftp://vert.synchro.net, ftp://cvs.synchro.net and ftp://ftp.synchro.net *
+ * *
+ * Anonymous CVS access to the development source and modification history *
+ * is available at cvs.synchro.net:/cvsroot/sbbs, example: *
+ * cvs -d :pserver:anonymous@cvs.synchro.net:/cvsroot/sbbs login *
+ * (just hit return, no password is necessary) *
+ * cvs -d :pserver:anonymous@cvs.synchro.net:/cvsroot/sbbs checkout src *
+ * *
+ * For Synchronet coding style and modification guidelines, see *
+ * http://www.synchro.net/source.html *
+ * *
+ * You are encouraged to submit any modifications (preferably in Unix diff *
+ * format) via e-mail to mods@synchro.net *
+ * *
+ * Note: If this box doesn't appear square, then you need to fix your tabs. *
+ ****************************************************************************/
+
+#ifndef _SMBWRAP_H
+#define _SMBWRAP_H
+
+/**********/
+/* Macros */
+/**********/
+
+#if defined(_WIN32)
+
+#include <io.h> /* _sopen */
+#include <windows.h> /* OF_SHARE_ */
+
+#define sopen(f,o,s) _sopen(f,o,s,S_IREAD|S_IWRITE)
+#define close(f) _close(f)
+
+#ifndef SH_DENYNO
+#define SH_DENYNO OF_SHARE_DENY_NONE
+#define SH_DENYWR OF_SHARE_DENY_WRITE
+#define SH_DENYRW OF_SHARE_EXCLUSIVE
+#endif
+
+#elif defined(__unix__)
+
+ #ifdef chsize
+ #undef chsize
+ #endif
+ #define chsize ftruncate
+ #define stricmp strcasecmp
+ #define strnicmp strncasecmp
+
+ #define O_BINARY 0
+ #define SH_DENYNO 0
+ #define SH_DENYRW 0
+
+#endif
+
+/**************/
+/* Prototypes */
+/**************/
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#if !defined(__BORLANDC__)
+ int lock(int fd, long pos, int len);
+ int unlock(int fd, long pos, int len);
+#endif
+
+#if defined(__unix__)
+ int sopen(char *fn, int access, int share);
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* Don't add anything after this line */