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-rw-r--r--fs/ocfs2/cluster/sys.c65
1 files changed, 65 insertions, 0 deletions
diff --git a/fs/ocfs2/cluster/sys.c b/fs/ocfs2/cluster/sys.c
new file mode 100644
index 0000000000..022f716c74
--- /dev/null
+++ b/fs/ocfs2/cluster/sys.c
@@ -0,0 +1,65 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * sys.c
+ *
+ * OCFS2 cluster sysfs interface
+ *
+ * Copyright (C) 2005 Oracle. All rights reserved.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/kobject.h>
+#include <linux/sysfs.h>
+#include <linux/fs.h>
+
+#include "ocfs2_nodemanager.h"
+#include "masklog.h"
+#include "sys.h"
+
+
+static ssize_t version_show(struct kobject *kobj, struct kobj_attribute *attr,
+ char *buf)
+{
+ return snprintf(buf, PAGE_SIZE, "%u\n", O2NM_API_VERSION);
+}
+static struct kobj_attribute attr_version =
+ __ATTR(interface_revision, S_IRUGO, version_show, NULL);
+
+static struct attribute *o2cb_attrs[] = {
+ &attr_version.attr,
+ NULL,
+};
+
+static struct attribute_group o2cb_attr_group = {
+ .attrs = o2cb_attrs,
+};
+
+static struct kset *o2cb_kset;
+
+void o2cb_sys_shutdown(void)
+{
+ mlog_sys_shutdown();
+ kset_unregister(o2cb_kset);
+}
+
+int o2cb_sys_init(void)
+{
+ int ret;
+
+ o2cb_kset = kset_create_and_add("o2cb", NULL, fs_kobj);
+ if (!o2cb_kset)
+ return -ENOMEM;
+
+ ret = sysfs_create_group(&o2cb_kset->kobj, &o2cb_attr_group);
+ if (ret)
+ goto error;
+
+ ret = mlog_sys_init(o2cb_kset);
+ if (ret)
+ goto error;
+ return 0;
+error:
+ kset_unregister(o2cb_kset);
+ return ret;
+}