initial

src/ZODB/winlock.c

+/*****************************************************************************
+ 
+  Zope Public License (ZPL) Version 0.9.4
+  ---------------------------------------
+  
+  Copyright (c) Digital Creations.  All rights reserved.
+  
+  Redistribution and use in source and binary forms, with or
+  without modification, are permitted provided that the following
+  conditions are met:
+  
+  1. Redistributions in source code must retain the above
+     copyright notice, this list of conditions, and the following
+     disclaimer.
+  
+  2. Redistributions in binary form must reproduce the above
+     copyright notice, this list of conditions, and the following
+     disclaimer in the documentation and/or other materials
+     provided with the distribution.
+  
+  3. Any use, including use of the Zope software to operate a
+     website, must either comply with the terms described below
+     under "Attribution" or alternatively secure a separate
+     license from Digital Creations.
+  
+  4. All advertising materials, documentation, or technical papers
+     mentioning features derived from or use of this software must
+     display the following acknowledgement:
+  
+       "This product includes software developed by Digital
+       Creations for use in the Z Object Publishing Environment
+       (http://www.zope.org/)."
+  
+  5. Names associated with Zope or Digital Creations must not be
+     used to endorse or promote products derived from this
+     software without prior written permission from Digital
+     Creations.
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+  6. Redistributions of any form whatsoever must retain the
+     following acknowledgment:
+  
+       "This product includes software developed by Digital
+       Creations for use in the Z Object Publishing Environment
+       (http://www.zope.org/)."
+  
+  7. Modifications are encouraged but must be packaged separately
+     as patches to official Zope releases.  Distributions that do
+     not clearly separate the patches from the original work must
+     be clearly labeled as unofficial distributions.
+  
+  Disclaimer
+  
+    THIS SOFTWARE IS PROVIDED BY DIGITAL CREATIONS ``AS IS'' AND
+    ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+    LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+    FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT
+    SHALL DIGITAL CREATIONS OR ITS CONTRIBUTORS BE LIABLE FOR ANY
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+    CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+    PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+    DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+    ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+    LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+    IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
+    THE POSSIBILITY OF SUCH DAMAGE.
+  
+  Attribution
+  
+    Individuals or organizations using this software as a web site
+    must provide attribution by placing the accompanying "button"
+    and a link to the accompanying "credits page" on the website's
+    main entry point.  In cases where this placement of
+    attribution is not feasible, a separate arrangment must be
+    concluded with Digital Creations.  Those using the software
+    for purposes other than web sites must provide a corresponding
+    attribution in locations that include a copyright using a
+    manner best suited to the application environment.
+  
+  This software consists of contributions made by Digital
+  Creations and many individuals on behalf of Digital Creations.
+  Specific attributions are listed in the accompanying credits
+  file.
+  
+ ****************************************************************************/
+static char *what_string = "$Id: winlock.c,v 1.1 1999/02/05 00:35:47 jim Exp $";
+
+#include <windows.h>
+#include <io.h>
+#include "Python.h"
+
+static PyObject *Error;
+
+#ifdef MS_WIN32
+static PyObject *	
+winlock(PyObject *ignored, PyObject *args)
+{
+  int fileno;
+  long h, ol, oh, ll, lh;
+  
+  if (! PyArg_ParseTuple(args, "illll", &fileno, &ol, &oh, &ll, &lh))
+    return NULL;
+
+  if ((h=_get_osfhandle(fileno))==-1) {
+    PyErr_SetString(Error, "_get_osfhandle failed");
+    return NULL;
+  }
+  if (LockFile((HANDLE)h, ol, oh, ll, lh)) {
+    Py_INCREF(Py_None);
+    return Py_None;
+  }
+  PyErr_SetObject(Error, PyInt_FromLong(GetLastError()));
+  return NULL;
+}
+
+static struct PyMethodDef methods[] = {
+  {"LockFile",	(PyCFunction)winlock,	1,
+   "LockFile(fileno, offsetLow, offsetHigh, lengthLow, lengthHigh ) -- "
+   "Lock the file associated with fileno"},
+  {NULL,		NULL}		/* sentinel */
+};
+#else
+
+static struct PyMethodDef methods[] = {
+  {NULL,		NULL}		/* sentinel */
+};
+
+#endif
+
+/* Initialization function for the module (*must* be called initcStringIO) */
+
+#ifndef DL_EXPORT	/* declarations for DLL import/export */
+#define DL_EXPORT(RTYPE) RTYPE
+#endif
+DL_EXPORT(void)
+initwinlock() {
+  PyObject *m, *d;
+  char *rev="$Revision: 1.1 $";
+
+  if (! (Error=PyString_FromString("winlock.error"))) return;
+
+  /* Create the module and add the functions */
+  m = Py_InitModule4("winlock", methods,
+		     "lock files on windows",
+		     (PyObject*)NULL,PYTHON_API_VERSION);
+
+  d = PyModule_GetDict(m);
+  PyDict_SetItemString(d, "error", Error);
+  PyDict_SetItemString(d,"__version__",
+		       PyString_FromStringAndSize(rev+11,strlen(rev+11)-2));
+  if (PyErr_Occurred()) Py_FatalError("can't initialize module winlock");
+}
+
+