LU-3557 mdt: fix open existing file with O_CREAT for ro mount

[fs/lustre-release.git] / lustre / mdt / mdt_open.c

diff --git a/lustre/mdt/mdt_open.c b/lustre/mdt/mdt_open.c
index 28eb0ca..686a76f 100644 (file)
--- a/lustre/mdt/mdt_open.c
+++ b/lustre/mdt/mdt_open.c
@@ -1696,6 +1696,8 @@ int mdt_reint_open(struct mdt_thread_info *info, struct mdt_lock_handle *lhc)
                 }
                 if (!(create_flags & MDS_OPEN_CREAT))
                         GOTO(out_parent, result);
+               if (exp_connect_flags(req->rq_export) & OBD_CONNECT_RDONLY)
+                       GOTO(out_parent, result = -EROFS);
                 *child_fid = *info->mti_rr.rr_fid2;
                 LASSERTF(fid_is_sane(child_fid), "fid="DFID"\n",
                          PFID(child_fid));