_mountinfo: add parent reference to mounts

1 files changed, 10 insertions, 0 deletions

diff --git a/lbup/_mountinfo.py b/lbup/_mountinfo.py
index 35be209..973e135 100644
--- a/lbup/_mountinfo.py
+++ b/lbup/_mountinfo.py
@@ -48,6 +48,9 @@ class _MountEntry:
     raw_entry     = None
     "raw mountinfo line, bytes"
 
+    parent        = None
+    "parent mountinfo entry, None if it does not exit"
+
     def __init__(self, line):
         self.raw_entry = line
 
@@ -118,6 +121,13 @@ class MountInfo:
 
         self.mounts = mounts
 
+        for e in mounts.values():
+            try:
+                e.parent = mounts[e.parent_id]
+            except KeyError:
+                pass
+
+
     def __str__(self):
         return '%s(%d entries)' % (self.__class__.__name__, len(self.mounts))