[Feature]add MT2731_MP2_MR2_SVN388 baseline version
Change-Id: Ief04314834b31e27effab435d3ca8ba33b499059
diff --git a/src/kernel/linux/v4.14/fs/nfs/nfs4getroot.c b/src/kernel/linux/v4.14/fs/nfs/nfs4getroot.c
new file mode 100644
index 0000000..1a69479
--- /dev/null
+++ b/src/kernel/linux/v4.14/fs/nfs/nfs4getroot.c
@@ -0,0 +1,41 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+* Copyright (C) 2006 Red Hat, Inc. All Rights Reserved.
+* Written by David Howells (dhowells@redhat.com)
+*/
+
+#include <linux/nfs_fs.h>
+#include "nfs4_fs.h"
+#include "internal.h"
+
+#define NFSDBG_FACILITY NFSDBG_CLIENT
+
+int nfs4_get_rootfh(struct nfs_server *server, struct nfs_fh *mntfh, bool auth_probe)
+{
+ struct nfs_fsinfo fsinfo;
+ int ret = -ENOMEM;
+
+ fsinfo.fattr = nfs_alloc_fattr();
+ if (fsinfo.fattr == NULL)
+ goto out;
+
+ /* Start by getting the root filehandle from the server */
+ ret = nfs4_proc_get_rootfh(server, mntfh, &fsinfo, auth_probe);
+ if (ret < 0) {
+ dprintk("nfs4_get_rootfh: getroot error = %d\n", -ret);
+ goto out;
+ }
+
+ if (!(fsinfo.fattr->valid & NFS_ATTR_FATTR_TYPE)
+ || !S_ISDIR(fsinfo.fattr->mode)) {
+ printk(KERN_ERR "nfs4_get_rootfh:"
+ " getroot encountered non-directory\n");
+ ret = -ENOTDIR;
+ goto out;
+ }
+
+ memcpy(&server->fsid, &fsinfo.fattr->fsid, sizeof(server->fsid));
+out:
+ nfs_free_fattr(fsinfo.fattr);
+ return ret;
+}