add check_access in _do_cap_update

Signed-off-by: Jashan Kamboj <jashank42@gmail.com>

diff --git a/src/mds/Locker.cc b/src/mds/Locker.cc
index fb548a56e6d633b0f54c6e965108d13efb84968a..6ca67d3e22db6eb919cab3c035129814e2e24028 100644 (file)
--- a/src/mds/Locker.cc
+++ b/src/mds/Locker.cc
@@ -3131,6 +3131,12 @@ bool Locker::_do_cap_update(CInode *in, Capability *cap,
   if (!dirty && !change_max)
     return false;
 
+  Session *session = static_cast<Session *>(m->get_connection()->get_priv());
+  if (!session->check_access(in, MAY_WRITE, 0, 0, 0, 0)) {
+    dout(10) << "check_access failed, dropping cap update on " << *in << dendl;
+    return false;
+  }
+  session->put();
 
   // do the update.
   EUpdate *le = new EUpdate(mds->mdlog, "cap update");