Do not use inode numbers on Windows and gracefully handle attempts to

rename over existing files on Windows. (Patch from Josh Nisly)


git-svn-id: http://svn.savannah.nongnu.org/svn/rdiff-backup@886 2b77aa54-bcbc-44c9-a7ec-4f6cf2b41109

trunk/rdiff-backup/CHANGELOG

 New in v1.1.16 (????/??/??)
 ---------------------------
 
+Do not use inode numbers on Windows and gracefully handle attempts to
+rename over existing files on Windows. (Patch from Josh Nisly)
+
 Finally fix 'No such file or directory' bug when attempting to regress after
 a failed backup. (Patch from Josh Nisly)
 

trunk/rdiff-backup/rdiff_backup/cmodule.c

@@ -66,6 +66,8 @@
 
 /* The following section is by Jeffrey A. Marshall and compensates for
  * a bug in Mac OS X's S_ISFIFO and S_ISSOCK macros.
+ * Note: Starting in Mac OS X 10.3, the buggy macros were changed to be
+ * the same as the ones below.
  */
 #ifdef __APPLE__
 /* S_ISFIFO/S_ISSOCK macros from <sys/stat.h> on mac osx are bogus */
@@ -116,13 +118,18 @@ static PyObject *c_make_file_dict(self, args)
 	  return NULL;
 	}
   }
+#if defined(MS_WINDOWS)
+  size = PyLong_FromLongLong((PY_LONG_LONG)sbuf.st_size);
+  inode = PyLong_FromLongLong((PY_LONG_LONG)-1);
+#else
 #ifdef HAVE_LARGEFILE_SUPPORT
   size = PyLong_FromLongLong((PY_LONG_LONG)sbuf.st_size);
   inode = PyLong_FromLongLong((PY_LONG_LONG)sbuf.st_ino);
 #else
   size = PyInt_FromLong(sbuf.st_size);
   inode = PyInt_FromLong((long)sbuf.st_ino);
-#endif
+#endif /* HAVE_LARGEFILE_SUPPORT */
+#endif /* defined(MS_WINDOWS) */
   mode = (long)sbuf.st_mode;
   perms = mode & 07777;
 #if defined(HAVE_LONG_LONG) && !defined(MS_WINDOWS)

trunk/rdiff-backup/rdiff_backup/rpath.py

@@ -244,12 +244,22 @@ def rename(rp_source, rp_dest):
 	log.Log(lambda: "Renaming %s to %s" % (rp_source.path, rp_dest.path), 7)
 	if not rp_source.lstat(): rp_dest.delete()
 	else:
-		if rp_dest.lstat() and rp_source.getinode() == rp_dest.getinode():
+		if rp_dest.lstat() and rp_source.getinode() == rp_dest.getinode() and \
+				rp_source.getinode() != -1:
 			log.Log("Warning: Attempt to rename over same inode: %s to %s"
 					% (rp_source.path, rp_dest.path), 2)
 			# You can't rename one hard linked file over another
 			rp_source.delete()
-		else: rp_source.conn.os.rename(rp_source.path, rp_dest.path)
+		else:
+			try:
+			    rp_source.conn.os.rename(rp_source.path, rp_dest.path)
+			except OSError, error:
+				if error.errno != errno.EEXIST: raise
+
+				# On Windows, files can't be renamed on top of an existing file
+				rp_source.conn.os.unlink(rp_dest.path)
+				rp_source.conn.os.rename(rp_source.path, rp_dest.path)
+			    
 		rp_dest.data = rp_source.data
 		rp_source.data = {'type': None}