[PATCH 05/13] trans: handle invalid responses to dir_lookup requests in fakeroot

[Justus Winter]

* trans/fakeroot.c (netfs_S_dir_lookup): Handle invalid responses to
  dir_lookup requests.
---
 trans/fakeroot.c |   11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/trans/fakeroot.c b/trans/fakeroot.c
index 6e3b5d4..bee018e 100644
--- a/trans/fakeroot.c
+++ b/trans/fakeroot.c
@@ -276,14 +276,21 @@ netfs_S_dir_lookup (struct protid *diruser,
       break;
 
     case FS_RETRY_MAGICAL:
-    default:
       if (file == MACH_PORT_NULL)
        {
          *retry_port = MACH_PORT_NULL;
          *retry_port_type = MACH_MSG_TYPE_COPY_SEND;
          return 0;
        }
-      break;
+      /* Fallthrough.  */
+
+    default:
+      /* Invalid response to our dir_lookup request.  */
+      if (file != MACH_PORT_NULL)
+       mach_port_deallocate (mach_task_self (), file);
+      *retry_port = MACH_PORT_NULL;
+      *retry_port_type = MACH_MSG_TYPE_COPY_SEND;
+      return EOPNOTSUPP;
     }
 
   /* We have a new port to an underlying node.
-- 
1.7.10.4