// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright (C) 2006 Red Hat, Inc. All Rights Reserved.
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* Written by David Howells (dhowells@redhat.com)
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*/
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#include <linux/nfs_fs.h>
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#include "nfs4_fs.h"
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#include "internal.h"
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#define NFSDBG_FACILITY NFSDBG_CLIENT
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int nfs4_get_rootfh(struct nfs_server *server, struct nfs_fh *mntfh, bool auth_probe)
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{
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struct nfs_fsinfo fsinfo;
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int ret = -ENOMEM;
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fsinfo.fattr = nfs_alloc_fattr();
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if (fsinfo.fattr == NULL)
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goto out;
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/* Start by getting the root filehandle from the server */
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ret = nfs4_proc_get_rootfh(server, mntfh, &fsinfo, auth_probe);
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if (ret < 0) {
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dprintk("nfs4_get_rootfh: getroot error = %d\n", -ret);
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goto out;
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}
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if (!(fsinfo.fattr->valid & NFS_ATTR_FATTR_TYPE)
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|| !S_ISDIR(fsinfo.fattr->mode)) {
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printk(KERN_ERR "nfs4_get_rootfh:"
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" getroot encountered non-directory\n");
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ret = -ENOTDIR;
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goto out;
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}
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memcpy(&server->fsid, &fsinfo.fattr->fsid, sizeof(server->fsid));
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out:
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nfs_free_fattr(fsinfo.fattr);
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return ret;
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}
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