blob: c0b3a16b4a00806f79ea9eb28b6933a8d94bcc52 [file] [log] [blame]
Bryan Schumakera38a9ea2012-07-16 16:39:16 -04001/*
2* Copyright (C) 2006 Red Hat, Inc. All Rights Reserved.
3* Written by David Howells (dhowells@redhat.com)
4*/
5
6#include <linux/nfs_fs.h>
7#include "nfs4_fs.h"
Trond Myklebustd6aa6a82012-10-16 12:32:24 -04008#include "internal.h"
Bryan Schumakera38a9ea2012-07-16 16:39:16 -04009
10#define NFSDBG_FACILITY NFSDBG_CLIENT
11
Trond Myklebust5e6b1992013-09-07 12:58:57 -040012int nfs4_get_rootfh(struct nfs_server *server, struct nfs_fh *mntfh, bool auth_probe)
Bryan Schumakera38a9ea2012-07-16 16:39:16 -040013{
14 struct nfs_fsinfo fsinfo;
15 int ret = -ENOMEM;
16
17 dprintk("--> nfs4_get_rootfh()\n");
18
19 fsinfo.fattr = nfs_alloc_fattr();
20 if (fsinfo.fattr == NULL)
21 goto out;
22
23 /* Start by getting the root filehandle from the server */
Trond Myklebust5e6b1992013-09-07 12:58:57 -040024 ret = nfs4_proc_get_rootfh(server, mntfh, &fsinfo, auth_probe);
Bryan Schumakera38a9ea2012-07-16 16:39:16 -040025 if (ret < 0) {
26 dprintk("nfs4_get_rootfh: getroot error = %d\n", -ret);
27 goto out;
28 }
29
30 if (!(fsinfo.fattr->valid & NFS_ATTR_FATTR_TYPE)
31 || !S_ISDIR(fsinfo.fattr->mode)) {
32 printk(KERN_ERR "nfs4_get_rootfh:"
33 " getroot encountered non-directory\n");
34 ret = -ENOTDIR;
35 goto out;
36 }
37
38 if (fsinfo.fattr->valid & NFS_ATTR_FATTR_V4_REFERRAL) {
39 printk(KERN_ERR "nfs4_get_rootfh:"
40 " getroot obtained referral\n");
41 ret = -EREMOTE;
42 goto out;
43 }
44
45 memcpy(&server->fsid, &fsinfo.fattr->fsid, sizeof(server->fsid));
46out:
47 nfs_free_fattr(fsinfo.fattr);
48 dprintk("<-- nfs4_get_rootfh() = %d\n", ret);
49 return ret;
50}