LU-2739 mdt: Deny non-DNE client to access remote directory

[fs/lustre-release.git] / lustre / mdt / mdt_internal.h

diff --git a/lustre/mdt/mdt_internal.h b/lustre/mdt/mdt_internal.h
index 3473c94..664940c 100644 (file)
--- a/lustre/mdt/mdt_internal.h
+++ b/lustre/mdt/mdt_internal.h
@@ -119,17 +119,17 @@ struct mdt_device {
        struct obd_export         *mdt_bottom_exp;
         /** target device */
         struct lu_target           mdt_lut;
-        /*
-         * Options bit-fields.
-         */
-        struct {
-                signed int         mo_user_xattr :1,
-                                   mo_acl        :1,
-                                   mo_compat_resname:1,
-                                   mo_mds_capa   :1,
-                                   mo_oss_capa   :1,
-                                   mo_cos        :1;
-        } mdt_opts;
+       /*
+        * Options bit-fields.
+        */
+       struct {
+               unsigned int       mo_user_xattr:1,
+                                  mo_acl:1,
+                                  mo_compat_resname:1,
+                                  mo_mds_capa:1,
+                                  mo_oss_capa:1,
+                                  mo_cos:1;
+       } mdt_opts;
         /* mdt state flags */
         unsigned long              mdt_state;
         /* lock to protect IOepoch */
@@ -620,6 +620,13 @@ static inline void mdt_export_evict(struct obd_export *exp)
         class_export_put(exp);
 }
 
+/* Here we use LVB_TYPE to check dne client, because it is
+ * also landed on 2.4. */
+static inline int mdt_is_dne_client(struct obd_export *exp)
+{
+       return !!(exp_connect_flags(exp) & OBD_CONNECT_LVB_TYPE);
+}
+
 int mdt_get_disposition(struct ldlm_reply *rep, int flag);
 void mdt_set_disposition(struct mdt_thread_info *info,
                         struct ldlm_reply *rep, int flag);