blob: a4b07730b2e1d0abb257a126fce7f3911ae1d434 [file] [log] [blame]
Zach Brown98211482005-12-15 14:31:23 -08001/* -*- mode: c; c-basic-offset: 8; -*-
2 * vim: noexpandtab sw=8 ts=8 sts=0:
3 *
4 * sys.c
5 *
6 * OCFS2 cluster sysfs interface
7 *
8 * Copyright (C) 2005 Oracle. All rights reserved.
9 *
10 * This program is free software; you can redistribute it and/or
11 * modify it under the terms of the GNU General Public
12 * License as published by the Free Software Foundation,
13 * version 2 of the License.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 * General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public
21 * License along with this program; if not, write to the
22 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
23 * Boston, MA 021110-1307, USA.
24 *
25 */
26
27#include <linux/kernel.h>
28#include <linux/module.h>
29#include <linux/kobject.h>
30#include <linux/sysfs.h>
Greg Kroah-Hartmanc60b7172007-11-02 16:19:59 -070031#include <linux/fs.h>
Zach Brown98211482005-12-15 14:31:23 -080032
33#include "ocfs2_nodemanager.h"
34#include "masklog.h"
35#include "sys.h"
36
Zach Brown98211482005-12-15 14:31:23 -080037
Greg Kroah-Hartmanc60b7172007-11-02 16:19:59 -070038static ssize_t version_show(struct kobject *kobj, struct kobj_attribute *attr,
39 char *buf)
Zach Brown98211482005-12-15 14:31:23 -080040{
41 return snprintf(buf, PAGE_SIZE, "%u\n", O2NM_API_VERSION);
42}
Greg Kroah-Hartmanc60b7172007-11-02 16:19:59 -070043static struct kobj_attribute attr_version =
44 __ATTR(interface_revision, S_IFREG | S_IRUGO, version_show, NULL);
Zach Brown98211482005-12-15 14:31:23 -080045
46static struct attribute *o2cb_attrs[] = {
Greg Kroah-Hartmanc60b7172007-11-02 16:19:59 -070047 &attr_version.attr,
Zach Brown98211482005-12-15 14:31:23 -080048 NULL,
49};
50
Greg Kroah-Hartmanc60b7172007-11-02 16:19:59 -070051static struct attribute_group o2cb_attr_group = {
52 .attrs = o2cb_attrs,
Zach Brown98211482005-12-15 14:31:23 -080053};
54
Greg Kroah-Hartmanc60b7172007-11-02 16:19:59 -070055static struct kset *o2cb_kset;
Zach Brown98211482005-12-15 14:31:23 -080056
57void o2cb_sys_shutdown(void)
58{
59 mlog_sys_shutdown();
Greg Kroah-Hartmanc60b7172007-11-02 16:19:59 -070060 kset_unregister(o2cb_kset);
Zach Brown98211482005-12-15 14:31:23 -080061}
62
63int o2cb_sys_init(void)
64{
65 int ret;
66
Joel Becker9d80f752008-04-22 11:46:44 -070067 o2cb_kset = kset_create_and_add("o2cb", NULL, fs_kobj);
Greg Kroah-Hartmanc60b7172007-11-02 16:19:59 -070068 if (!o2cb_kset)
69 return -ENOMEM;
Zach Brown98211482005-12-15 14:31:23 -080070
Greg Kroah-Hartmanc60b7172007-11-02 16:19:59 -070071 ret = sysfs_create_group(&o2cb_kset->kobj, &o2cb_attr_group);
Zach Brown98211482005-12-15 14:31:23 -080072 if (ret)
Greg Kroah-Hartmanc60b7172007-11-02 16:19:59 -070073 goto error;
74
75 ret = mlog_sys_init(o2cb_kset);
76 if (ret)
77 goto error;
78 return 0;
79error:
80 kset_unregister(o2cb_kset);
Zach Brown98211482005-12-15 14:31:23 -080081 return ret;
82}