LU-4219 mdd: limit os_namelen to the max of NAME_MAX

[fs/lustre-release.git] / lustre / mdd / mdd_device.c

diff --git a/lustre/mdd/mdd_device.c b/lustre/mdd/mdd_device.c
index f4462b7..0153d18 100644 (file)
--- a/lustre/mdd/mdd_device.c
+++ b/lustre/mdd/mdd_device.c
@@ -1012,16 +1012,18 @@ static int mdd_root_get(const struct lu_env *env,
  * No permission check is needed.
  */
 static int mdd_statfs(const struct lu_env *env, struct md_device *m,
-                      struct obd_statfs *sfs)
+                     struct obd_statfs *sfs)
 {
-        struct mdd_device *mdd = lu2mdd_dev(&m->md_lu_dev);
-        int rc;
+       struct mdd_device *mdd = lu2mdd_dev(&m->md_lu_dev);
+       int rc;
 
-        ENTRY;
+       ENTRY;
 
-        rc = mdd_child_ops(mdd)->dt_statfs(env, mdd->mdd_child, sfs);
+       rc = mdd_child_ops(mdd)->dt_statfs(env, mdd->mdd_child, sfs);
 
-        RETURN(rc);
+       sfs->os_namelen = min_t(__u32, sfs->os_namelen, NAME_MAX);
+
+       RETURN(rc);
 }
 
 /*