--- grass-6.3.0/raster/r.drain/main.c	
+++ grass-6.3.0/raster/r.drain/main.c	
@@ -296,8 +296,8 @@ int main(int argc, char **argv)
     tempfile1 = G_tempfile();
     tempfile2 = G_tempfile();
 
-    fe = open(tempfile1, O_RDWR | O_CREAT);
-    fd = open(tempfile2, O_RDWR | O_CREAT);
+    fe = open(tempfile1, O_RDWR | O_CREAT, S_IRUSR | S_IWUSR);
+    fd = open(tempfile2, O_RDWR | O_CREAT, S_IRUSR | S_IWUSR);
 
     /* transfer the input map to a temp file */
     for (i = 0; i < nrows; i++) {
--- grass-6.3.0/raster/r.fill.dir/main.c	
+++ grass-6.3.0/raster/r.fill.dir/main.c	
@@ -196,9 +196,9 @@ main(int argc, char **argv)
    tempfile2 = G_tempfile();
    tempfile3 = G_tempfile();
 
-   fe=open(tempfile1,O_RDWR|O_CREAT); /* elev */
-   fd=open(tempfile2,O_RDWR|O_CREAT); /* dirn */
-   fm=open(tempfile3,O_RDWR|O_CREAT); /* problems */
+   fe=open(tempfile1,O_RDWR|O_CREAT, S_IRUSR|S_IWUSR); /* elev */
+   fd=open(tempfile2,O_RDWR|O_CREAT, S_IRUSR|S_IWUSR); /* dirn */
+   fm=open(tempfile3,O_RDWR|O_CREAT, S_IRUSR|S_IWUSR); /* problems */
 
    G_message(_("Reading map..."));
    for(i=0;i<nrows;i++)