+#ifdef OPENSSL_SYS_VMS
+ /* VMS NOTE: Prior versions of this routine created a _new_
+ * version of the rand file for each call into this routine, then
+ * deleted all existing versions named ;-1, and finally renamed
+ * the current version as ';1'. Under concurrent usage, this
+ * resulted in an RMS race condition in rename() which could
+ * orphan files (see vms message help for RMS$_REENT). With the
+ * fopen() calls below, openssl/VMS now shares the top-level
+ * version of the rand file. Note that there may still be
+ * conditions where the top-level rand file is locked. If so, this
+ * code will then create a new version of the rand file. Without
+ * the delete and rename code, this can result in ascending file
+ * versions that stop at version 32767, and this routine will then
+ * return an error. The remedy for this is to recode the calling
+ * application to avoid concurrent use of the rand file, or
+ * synchronize usage at the application level. Also consider
+ * whether or not you NEED a persistent rand file in a concurrent
+ * use situation.
+ */
+
+ out = vms_fopen(file,"rb+",VMS_OPEN_ATTRS);
+ if (out == NULL)
+ out = vms_fopen(file,"wb",VMS_OPEN_ATTRS);
+#else
+ if (out == NULL)
+ out = fopen(file,"wb");
+#endif