From 522939961785cd611ad1e7195af6bce154706bc6 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ludovic=20Court=C3=A8s?= <ludo@gnu.org>
Date: Fri, 14 Mar 2008 13:10:30 +0000
Subject: [PATCH] setuid-wrapper: Disallow empty `.real' files.

svn path=/nixos/trunk/; revision=11122
---
 helpers/setuid/setuid-wrapper.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/helpers/setuid/setuid-wrapper.c b/helpers/setuid/setuid-wrapper.c
index 30452fc7b7b..32965d40c11 100644
--- a/helpers/setuid/setuid-wrapper.c
+++ b/helpers/setuid/setuid-wrapper.c
@@ -63,6 +63,7 @@ int main(int argc, char * * argv)
     len = read(fdSelf, real, PATH_MAX);
     assert (len != -1);
     assert (len < sizeof (real));
+    assert (len > 0);
     real[len] = 0;
 
     close(fdSelf);