[OE-core] [PATCH] lib/oe: copyhardlinktree - detect mount points Add function getmount to detect the mount point of the path, as os.stat(path).st_dev in copyhardlinktree fails in lxc containers to detect different paths as separate mounted filesystems (cp -l failure)

[Jason Plum]

Signed-off-by: Jason Plum <jplum at devonit.com>
---
 meta/lib/oe/path.py | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/meta/lib/oe/path.py b/meta/lib/oe/path.py
index 1310e38..f1905c3 100644
--- a/meta/lib/oe/path.py
+++ b/meta/lib/oe/path.py
@@ -90,7 +90,7 @@ def copyhardlinktree(src, dst):
     if os.path.isdir(src) and not len(os.listdir(src)):
         return	
 
-    if (os.stat(src).st_dev ==  os.stat(dst).st_dev):
+    if (getmount(src) ==  getmount(dst)):
         # Need to copy directories only with tar first since cp will error if two 
         # writers try and create a directory at the same time
         cmd = 'cd %s; find . -type d -print | tar -cf - -C %s -p --files-from - | tar -xf - -C %s' % (src, src, dst)
@@ -259,3 +259,12 @@ def realpath(file, root, use_physdir = True, loop_cnt = 100, assume_dir = False)
         raise
 
     return file
+
+def getmount(path):
+    """ Returns the mount point of the path, using realpath """
+    path = realpath(path)
+    while path != os.path.sep:
+        if os.path.ismount(path):
+            return path
+        path = os.path.abspath(os.path.join(path, os.pardir))
+    return path
-- 
1.8.5.2