--- pgmblock.c	2002-04-29 14:26:13.000000000 +0000
+++ pgmblock.c	2009-03-05 02:51:43.000000000 +0000
@@ -161,7 +161,7 @@
 
         printf("%d rare pixels (%1.4f)\n",t,((float)t)/(w*h));
 
-        F = open("map",O_WRONLY|O_CREAT);
+        F = open("map",O_WRONLY|O_CREAT, 0644);
         write(F,m,h*bpl);
         write(F,map,256);
         close(F);
@@ -197,7 +197,7 @@
     {
         int i,j,F;
 
-        F = open("map",O_RDONLY|O_CREAT);
+        F = open("map",O_RDONLY|O_CREAT, 0644);
         read(F,m,h*bpl);
         read(F,map,256);
         close(F);