From 43c13b690fe475fb01c3d975d85503322dbdb5a9 Mon Sep 17 00:00:00 2001
From: Kees Cook <kees@outflux.net>
Date: Tue, 23 Oct 2007 10:14:41 -0700
Subject: [PATCH] don't create symlinks if they already exist

---
 mk-sbuild-lv | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/mk-sbuild-lv b/mk-sbuild-lv
index d5f233b..6cd9f59 100755
--- a/mk-sbuild-lv
+++ b/mk-sbuild-lv
@@ -241,9 +241,9 @@ echo set debconf/priority critical | debconf-communicate
 # Install basic build tool set, trying to match buildd
 apt-get -y install $BUILD_PKGS
 # Set up expected /dev entries
-ln -s /proc/self/fd/0 /dev/stdin
-ln -s /proc/self/fd/1 /dev/stdout
-ln -s /proc/self/fd/2 /dev/stderr
+if [ ! -r /dev/stdin ];  then ln -s /proc/self/fd/0 /dev/stdin;  fi
+if [ ! -r /dev/stdout ]; then ln -s /proc/self/fd/1 /dev/stdout; fi
+if [ ! -r /dev/stderr ]; then ln -s /proc/self/fd/2 /dev/stderr; fi
 # Clean up
 apt-get clean
 rm /finish.sh