From 331d12ed50aa265e2fc7a865a0d8872e9666e9b9 Mon Sep 17 00:00:00 2001
From: r5d <rsiddharth@ninthfloor.org>
Date: Thu, 13 Jul 2017 13:13:59 -0400
Subject: [PATCH] certbot: Update storage.get_link_target (#4750) (#4923)

* certbot: Update storage.get_link_target (#4750)

* The `get_link_target` function raises `errors.CertStorageError` when
  link does not exists.

* certbot: Fix typo in storage.get_link_target.
---
 certbot/storage.py | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/certbot/storage.py b/certbot/storage.py
index 4f167d4ea..d03052dae 100644
--- a/certbot/storage.py
+++ b/certbot/storage.py
@@ -186,8 +186,15 @@ def get_link_target(link):
     :returns: Absolute path to the target of link
     :rtype: str
 
+    :raises .CertStorageError: If link does not exists.
+
     """
-    target = os.readlink(link)
+    try:
+        target = os.readlink(link)
+    except OSError:
+        raise errors.CertStorageError(
+            "Expected {0} to be a symlink".format(link))
+
     if not os.path.isabs(target):
         target = os.path.join(os.path.dirname(link), target)
     return os.path.abspath(target)