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-rw-r--r--src/libmain/shared.cc5
1 files changed, 5 insertions, 0 deletions
diff --git a/src/libmain/shared.cc b/src/libmain/shared.cc
index 0a6ebcd5c225..bc7b2dd51fef 100644
--- a/src/libmain/shared.cc
+++ b/src/libmain/shared.cc
@@ -334,6 +334,11 @@ void switchToNixUser()
         exit(1);
     }
 
+    /* !!! for setuid operation, we should: 1) wipe the environment;
+       2) verify file descriptors 0, 1, 2; 3) etc.
+       See: http://www.daemon-systems.org/man/setuid.7.html
+    */
+
     haveSwitched = true;
     
 #endif