From 1dd0eac8b57b646d5772dce3adfb2d230d19222c Mon Sep 17 00:00:00 2001
From: Pedro Alvarez <pedro.alvarez@codethink.co.uk>
Date: Fri, 10 Oct 2014 10:56:52 +0000
Subject: Add 'is_device' function to check if we are deploying to a device

---
 morphlib/writeexts.py | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/morphlib/writeexts.py b/morphlib/writeexts.py
index 0fd0ad7b..48c9434e 100644
--- a/morphlib/writeexts.py
+++ b/morphlib/writeexts.py
@@ -22,6 +22,8 @@ import shutil
 import sys
 import time
 import tempfile
+import errno
+import stat
 
 import morphlib
 
@@ -572,3 +574,12 @@ class WriteExtension(cliapp.Application):
             logging.error("Error checking SSH connectivity: %s", str(e))
             raise cliapp.AppException(
                 'Unable to SSH to %s: %s' % (ssh_host, e))
+
+    def is_device(self, location):
+        try:
+            st = os.stat(location)
+            return stat.S_ISBLK(st.st_mode)
+        except OSError as e:
+            if e.errno == errno.ENOENT:
+                return False
+            raise
-- 
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