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
13int 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));
38out:
39	nfs_free_fattr(fsinfo.fattr);
40	return ret;
41}

 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
13int 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));
38out:
39	nfs_free_fattr(fsinfo.fattr);
40	return ret;
41}