cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
Log | Files | Refs | README | LICENSE | sfeed.txt

sys.c (1215B)

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