From: Joey Hess <joey@kodama.kitenet.net>
Date: Sun, 13 Jul 2008 03:31:27 +0000 (-0400)
Subject: avoid hardlinking files owned by others
X-Git-Tag: 2.54~70^2~12
X-Git-Url: http://git.tremily.us/?a=commitdiff_plain;h=0b140ed1c8428d6984e1e0294b5008670d4f87fe;p=ikiwiki.git

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.
---

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
 		}