From a4dc51b30d01208480ffb921087f27a2a2cf2fc5 Mon Sep 17 00:00:00 2001
From: Kovid Goyal <kovid@kovidgoyal.net>
Date: Fri, 15 May 2009 12:37:25 -0700
Subject: [PATCH] Fix #2447 (Calibre "permission denied" error)

---
 src/calibre/ebooks/metadata/opf2.py | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/calibre/ebooks/metadata/opf2.py b/src/calibre/ebooks/metadata/opf2.py
index dd3128edef..cd2480ed63 100644
--- a/src/calibre/ebooks/metadata/opf2.py
+++ b/src/calibre/ebooks/metadata/opf2.py
@@ -506,6 +506,9 @@ class OPF(object):
             else:
                 self.path_to_html_toc, self.html_toc_fragment = \
                     toc.partition('#')[0], toc.partition('#')[-1]
+                if not os.access(self.path_to_html_toc, os.R_OK) or \
+                        not os.path.isfile(self.path_to_html_toc):
+                    self.path_to_html_toc = None
                 self.toc.read_html_toc(toc)
         except:
             pass