From 0b140ed1c8428d6984e1e0294b5008670d4f87fe Mon Sep 17 00:00:00 2001
From: Joey Hess <joey@kodama.kitenet.net>
Date: Sat, 12 Jul 2008 23:31:27 -0400
Subject: avoid hardlinking files owned by others

If hardlinks are enabled, it would hardlink files from the underlay. That
was sorta annoying if you tried to edit by hand for some reason, so let's
not. Files that are hardlinked should be rare enough that a few extra stats
won't hurt.
---
 IkiWiki/Render.pm | 12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

diff --git a/IkiWiki/Render.pm b/IkiWiki/Render.pm
index c241fd40b..990fcaaa1 100644
--- a/IkiWiki/Render.pm
+++ b/IkiWiki/Render.pm
@@ -229,10 +229,14 @@ sub render ($) { #{{{
 		will_render($file, $file, 1);
 		
 		if ($config{hardlink}) {
-			prep_writefile($file, $config{destdir});
-			unlink($config{destdir}."/".$file);
-			if (link($srcfile, $config{destdir}."/".$file)) {
-				return;
+			# only hardlink if owned by same user
+			my @stat=stat($srcfile);
+			if ($stat[4] == $>) {
+				prep_writefile($file, $config{destdir});
+				unlink($config{destdir}."/".$file);
+				if (link($srcfile, $config{destdir}."/".$file)) {
+					return;
+				}
 			}
 			# if hardlink fails, fall back to copying
 		}
-- 
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