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b2441318 | 1 | // SPDX-License-Identifier: GPL-2.0 |
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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" | |
d6aa6a81 | 9 | #include "internal.h" |
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10 | |
11 | #define NFSDBG_FACILITY NFSDBG_CLIENT | |
12 | ||
5e6b1990 | 13 | int nfs4_get_rootfh(struct nfs_server *server, struct nfs_fh *mntfh, bool auth_probe) |
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14 | { |
15 | struct nfs_fsinfo fsinfo; | |
16 | int ret = -ENOMEM; | |
17 | ||
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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 */ | |
5e6b1990 | 23 | ret = nfs4_proc_get_rootfh(server, mntfh, &fsinfo, auth_probe); |
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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 | ||
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37 | memcpy(&server->fsid, &fsinfo.fattr->fsid, sizeof(server->fsid)); |
38 | out: | |
39 | nfs_free_fattr(fsinfo.fattr); | |
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40 | return ret; |
41 | } |