1*4882a593Smuzhiyun // SPDX-License-Identifier: GPL-2.0-only
2*4882a593Smuzhiyun /* -*- mode: c; c-basic-offset: 8; -*-
3*4882a593Smuzhiyun * vim: noexpandtab sw=8 ts=8 sts=0:
4*4882a593Smuzhiyun *
5*4882a593Smuzhiyun * sys.c
6*4882a593Smuzhiyun *
7*4882a593Smuzhiyun * OCFS2 cluster sysfs interface
8*4882a593Smuzhiyun *
9*4882a593Smuzhiyun * Copyright (C) 2005 Oracle. All rights reserved.
10*4882a593Smuzhiyun */
11*4882a593Smuzhiyun
12*4882a593Smuzhiyun #include <linux/kernel.h>
13*4882a593Smuzhiyun #include <linux/module.h>
14*4882a593Smuzhiyun #include <linux/kobject.h>
15*4882a593Smuzhiyun #include <linux/sysfs.h>
16*4882a593Smuzhiyun #include <linux/fs.h>
17*4882a593Smuzhiyun
18*4882a593Smuzhiyun #include "ocfs2_nodemanager.h"
19*4882a593Smuzhiyun #include "masklog.h"
20*4882a593Smuzhiyun #include "sys.h"
21*4882a593Smuzhiyun
22*4882a593Smuzhiyun
version_show(struct kobject * kobj,struct kobj_attribute * attr,char * buf)23*4882a593Smuzhiyun static ssize_t version_show(struct kobject *kobj, struct kobj_attribute *attr,
24*4882a593Smuzhiyun char *buf)
25*4882a593Smuzhiyun {
26*4882a593Smuzhiyun return snprintf(buf, PAGE_SIZE, "%u\n", O2NM_API_VERSION);
27*4882a593Smuzhiyun }
28*4882a593Smuzhiyun static struct kobj_attribute attr_version =
29*4882a593Smuzhiyun __ATTR(interface_revision, S_IRUGO, version_show, NULL);
30*4882a593Smuzhiyun
31*4882a593Smuzhiyun static struct attribute *o2cb_attrs[] = {
32*4882a593Smuzhiyun &attr_version.attr,
33*4882a593Smuzhiyun NULL,
34*4882a593Smuzhiyun };
35*4882a593Smuzhiyun
36*4882a593Smuzhiyun static struct attribute_group o2cb_attr_group = {
37*4882a593Smuzhiyun .attrs = o2cb_attrs,
38*4882a593Smuzhiyun };
39*4882a593Smuzhiyun
40*4882a593Smuzhiyun static struct kset *o2cb_kset;
41*4882a593Smuzhiyun
o2cb_sys_shutdown(void)42*4882a593Smuzhiyun void o2cb_sys_shutdown(void)
43*4882a593Smuzhiyun {
44*4882a593Smuzhiyun mlog_sys_shutdown();
45*4882a593Smuzhiyun kset_unregister(o2cb_kset);
46*4882a593Smuzhiyun }
47*4882a593Smuzhiyun
o2cb_sys_init(void)48*4882a593Smuzhiyun int o2cb_sys_init(void)
49*4882a593Smuzhiyun {
50*4882a593Smuzhiyun int ret;
51*4882a593Smuzhiyun
52*4882a593Smuzhiyun o2cb_kset = kset_create_and_add("o2cb", NULL, fs_kobj);
53*4882a593Smuzhiyun if (!o2cb_kset)
54*4882a593Smuzhiyun return -ENOMEM;
55*4882a593Smuzhiyun
56*4882a593Smuzhiyun ret = sysfs_create_group(&o2cb_kset->kobj, &o2cb_attr_group);
57*4882a593Smuzhiyun if (ret)
58*4882a593Smuzhiyun goto error;
59*4882a593Smuzhiyun
60*4882a593Smuzhiyun ret = mlog_sys_init(o2cb_kset);
61*4882a593Smuzhiyun if (ret)
62*4882a593Smuzhiyun goto error;
63*4882a593Smuzhiyun return 0;
64*4882a593Smuzhiyun error:
65*4882a593Smuzhiyun kset_unregister(o2cb_kset);
66*4882a593Smuzhiyun return ret;
67*4882a593Smuzhiyun }
68