Gitiles
Code Review Sign In
gerrit-public.fairphone.software / kernel / msm / 7521a3c566dda7bb09576975324fc0a08a79ad14 / . / fs / cifs / export.c
blob: 6e66bc19f0aee71de61754aa3d1338aaebc31650 [file] [log] [blame]
Steve French1ae1bc42007-02-27 05:16:30 +0000[diff] [blame]1/*
2 * fs/cifs/export.c
3 *
4 * Copyright (C) International Business Machines Corp., 2007
5 * Author(s): Steve French (sfrench@us.ibm.com)
6 *
7 * Common Internet FileSystem (CIFS) client
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000[diff] [blame]8 *
Steve French1ae1bc42007-02-27 05:16:30 +0000[diff] [blame]9 * Operations related to support for exporting files via NFSD
10 *
11 * This library is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU Lesser General Public License as published
13 * by the Free Software Foundation; either version 2.1 of the License, or
14 * (at your option) any later version.
15 *
16 * This library is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
19 * the GNU Lesser General Public License for more details.
20 *
21 * You should have received a copy of the GNU Lesser General Public License
22 * along with this library; if not, write to the Free Software
23 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
24 */
25
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000[diff] [blame]26 /*
Steve French1ae1bc42007-02-27 05:16:30 +0000[diff] [blame]27 * See Documentation/filesystems/Exporting
28 * and examples in fs/exportfs
Steve French7521a3c2007-07-11 18:30:34 +0000[diff] [blame^]29 *
30 * Since cifs is a network file system, an "fsid" must be included for
31 * any nfs exports file entries which refer to cifs paths. In addition
32 * the cifs mount must be mounted with the "serverino" option (ie use stable
33 * server inode numbers instead of locally generated temporary ones).
34 * Although cifs inodes do not use generation numbers (have generation number
35 * of zero) - the inode number alone should be good enough for simple cases
36 * in which users want to export cifs shares with NFS. The decode and encode
37 * could be improved by using a new routine which expects 64 bit inode numbers
38 * instead of the default 32 bit routines in fs/exportfs
39 *
Steve French1ae1bc42007-02-27 05:16:30 +0000[diff] [blame]40 */
41
42#include <linux/fs.h>
Steve French7521a3c2007-07-11 18:30:34 +0000[diff] [blame^]43#include "cifsglob.h"
44#include "cifs_debug.h"
45
Steve French1ae1bc42007-02-27 05:16:30 +0000[diff] [blame]46
47#ifdef CONFIG_CIFS_EXPERIMENTAL
48
49static struct dentry *cifs_get_parent(struct dentry *dentry)
50{
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000[diff] [blame]51 /* BB need to add code here eventually to enable export via NFSD */
Steve French7521a3c2007-07-11 18:30:34 +0000[diff] [blame^]52 cFYI(1, ("get parent for %p", dentry));
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000[diff] [blame]53 return ERR_PTR(-EACCES);
Steve French1ae1bc42007-02-27 05:16:30 +0000[diff] [blame]54}
55
56struct export_operations cifs_export_ops = {
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000[diff] [blame]57 .get_parent = cifs_get_parent,
58/* Following five export operations are unneeded so far and can default:
59 .get_dentry =
60 .get_name =
61 .find_exported_dentry =
62 .decode_fh =
63 .encode_fs = */
64};
Steve French1ae1bc42007-02-27 05:16:30 +0000[diff] [blame]65
66#endif /* EXPERIMENTAL */
67