===================================================================
RCS file: /cvs/cvsweb/cvsweb.cgi,v
retrieving revision 4.30
retrieving revision 4.31
diff -u -p -r4.30 -r4.31
--- cvsweb/cvsweb.cgi	2019/11/29 14:29:48	4.30
+++ cvsweb/cvsweb.cgi	2019/11/29 14:40:27	4.31
@@ -1,5 +1,5 @@
 #!/usr/bin/perl
-# $Id: cvsweb.cgi,v 4.30 2019/11/29 14:29:48 schwarze Exp $
+# $Id: cvsweb.cgi,v 4.31 2019/11/29 14:40:27 schwarze Exp $
 # $knu: cvsweb.cgi,v 1.299 2010/11/13 16:37:18 simon
 #
 # cvsweb - a CGI interface to CVS trees.
@@ -189,6 +189,10 @@ sub checkout_to_temp($$$);
 # Get rid of unsafe environment vars.  Don't do this in the BEGIN block
 # (think mod_perl)...
 delete(@ENV{qw(PATH IFS CDPATH ENV BASH_ENV)});
+
+# Helps to achieve read only access to the repositories
+# with cvs >= 1.12.1 and doesn't hurt other versions.
+$ENV{CVSREADONLYFS} = 1;
 
 # Location of the configuration file inside the web server chroot:
 $config = '/conf/cvsweb/cvsweb.conf';