Merge branch 'nfsd-next' of git://linux-nfs.org/~bfields/linux

[~andy/linux] / fs / nfsd / vfs.c

diff --git a/fs/nfsd/vfs.c b/fs/nfsd/vfs.c
index 4700a0a929d72baeb0c86024a1c5051e6d19cab5..702f64e820c301992afda8adecf6d06dc4746c22 100644 (file)
--- a/fs/nfsd/vfs.c
+++ b/fs/nfsd/vfs.c
@@ -757,8 +757,16 @@ nfsd_open(struct svc_rqst *rqstp, struct svc_fh *fhp, umode_t type,
         * If we get here, then the client has already done an "open",
         * and (hopefully) checked permission - so allow OWNER_OVERRIDE
         * in case a chmod has now revoked permission.
+        *
+        * Arguably we should also allow the owner override for
+        * directories, but we never have and it doesn't seem to have
+        * caused anyone a problem.  If we were to change this, note
+        * also that our filldir callbacks would need a variant of
+        * lookup_one_len that doesn't check permissions.
         */
-       err = fh_verify(rqstp, fhp, type, may_flags | NFSD_MAY_OWNER_OVERRIDE);
+       if (type == S_IFREG)
+               may_flags |= NFSD_MAY_OWNER_OVERRIDE;
+       err = fh_verify(rqstp, fhp, type, may_flags);
        if (err)
                goto out;