jms umask patch
https://qmail.jms1.net/simscan/index.shtml#umask

diff -ruN simscan-1.4.0-factory/simscan.c simscan-1.4.0-patched/simscan.c
--- simscan-1.4.0-factory/simscan.c	2007-10-29 10:15:05.000000000 -0400
+++ simscan-1.4.0-patched/simscan.c	2007-11-23 01:33:48.000000000 -0500
@@ -283,6 +283,7 @@
   }
 
   /* create the working directory, allow group access too */
+  umask ( 027 ) ;
   if ( mkdir(workdir, 0750) == -1 ) {
     if ( DebugFlag > 0 ) {
       fprintf(stderr, "simscan: error making work dir, exit 400, errno: %d\n",