| 1 | // SPDX-License-Identifier: GPL-2.0 |
|---|---|
| 2 | /* |
| 3 | * Copyright (C) 2006 Red Hat, Inc. All Rights Reserved. |
| 4 | * Written by David Howells (dhowells@redhat.com) |
| 5 | */ |
| 6 | |
| 7 | #include <linux/nfs_fs.h> |
| 8 | #include "nfs4_fs.h" |
| 9 | #include "internal.h" |
| 10 | |
| 11 | #define NFSDBG_FACILITY NFSDBG_CLIENT |
| 12 | |
| 13 | int nfs4_get_rootfh(struct nfs_server *server, struct nfs_fh *mntfh, bool auth_probe) |
| 14 | { |
| 15 | struct nfs_fsinfo fsinfo; |
| 16 | int ret = -ENOMEM; |
| 17 | |
| 18 | fsinfo.fattr = nfs_alloc_fattr(); |
| 19 | if (fsinfo.fattr == NULL) |
| 20 | goto out; |
| 21 | |
| 22 | /* Start by getting the root filehandle from the server */ |
| 23 | ret = nfs4_proc_get_rootfh(server, mntfh, &fsinfo, auth_probe); |
| 24 | if (ret < 0) { |
| 25 | dprintk("nfs4_get_rootfh: getroot error = %d\n", -ret); |
| 26 | goto out; |
| 27 | } |
| 28 | |
| 29 | if (!(fsinfo.fattr->valid & NFS_ATTR_FATTR_TYPE) |
| 30 | || !S_ISDIR(fsinfo.fattr->mode)) { |
| 31 | printk(KERN_ERR "nfs4_get_rootfh:" |
| 32 | " getroot encountered non-directory\n"); |
| 33 | ret = -ENOTDIR; |
| 34 | goto out; |
| 35 | } |
| 36 | |
| 37 | memcpy(&server->fsid, &fsinfo.fattr->fsid, sizeof(server->fsid)); |
| 38 | out: |
| 39 | nfs_free_fattr(fattr: fsinfo.fattr); |
| 40 | return ret; |
| 41 | } |
| 42 |