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e47ca509 | 1 | // SPDX-License-Identifier: GPL-2.0-only |
98211489 ZB |
2 | /* -*- mode: c; c-basic-offset: 8; -*- |
3 | * vim: noexpandtab sw=8 ts=8 sts=0: | |
4 | * | |
5 | * sys.c | |
6 | * | |
7 | * OCFS2 cluster sysfs interface | |
8 | * | |
9 | * Copyright (C) 2005 Oracle. All rights reserved. | |
98211489 ZB |
10 | */ |
11 | ||
12 | #include <linux/kernel.h> | |
13 | #include <linux/module.h> | |
14 | #include <linux/kobject.h> | |
15 | #include <linux/sysfs.h> | |
c60b7178 | 16 | #include <linux/fs.h> |
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17 | |
18 | #include "ocfs2_nodemanager.h" | |
19 | #include "masklog.h" | |
20 | #include "sys.h" | |
21 | ||
98211489 | 22 | |
c60b7178 GKH |
23 | static ssize_t version_show(struct kobject *kobj, struct kobj_attribute *attr, |
24 | char *buf) | |
98211489 ZB |
25 | { |
26 | return snprintf(buf, PAGE_SIZE, "%u\n", O2NM_API_VERSION); | |
27 | } | |
c60b7178 | 28 | static struct kobj_attribute attr_version = |
58f86cc8 | 29 | __ATTR(interface_revision, S_IRUGO, version_show, NULL); |
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30 | |
31 | static struct attribute *o2cb_attrs[] = { | |
c60b7178 | 32 | &attr_version.attr, |
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33 | NULL, |
34 | }; | |
35 | ||
c60b7178 GKH |
36 | static struct attribute_group o2cb_attr_group = { |
37 | .attrs = o2cb_attrs, | |
98211489 ZB |
38 | }; |
39 | ||
c60b7178 | 40 | static struct kset *o2cb_kset; |
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41 | |
42 | void o2cb_sys_shutdown(void) | |
43 | { | |
44 | mlog_sys_shutdown(); | |
c60b7178 | 45 | kset_unregister(o2cb_kset); |
98211489 ZB |
46 | } |
47 | ||
48 | int o2cb_sys_init(void) | |
49 | { | |
50 | int ret; | |
51 | ||
9d80f753 | 52 | o2cb_kset = kset_create_and_add("o2cb", NULL, fs_kobj); |
c60b7178 GKH |
53 | if (!o2cb_kset) |
54 | return -ENOMEM; | |
55 | ||
56 | ret = sysfs_create_group(&o2cb_kset->kobj, &o2cb_attr_group); | |
98211489 | 57 | if (ret) |
c60b7178 | 58 | goto error; |
98211489 | 59 | |
c60b7178 | 60 | ret = mlog_sys_init(o2cb_kset); |
98211489 | 61 | if (ret) |
c60b7178 GKH |
62 | goto error; |
63 | return 0; | |
64 | error: | |
65 | kset_unregister(o2cb_kset); | |
98211489 ZB |
66 | return ret; |
67 | } |