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82353b594c
- cluster/sys.c: make needlessly global code static
- dlm/: "extern" declarations for variables belong into header files
(and in this case, they are already in dlmdomain.h)
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
125 lines
3.1 KiB
C
125 lines
3.1 KiB
C
/* -*- mode: c; c-basic-offset: 8; -*-
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* vim: noexpandtab sw=8 ts=8 sts=0:
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*
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* sys.c
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*
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* OCFS2 cluster sysfs interface
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*
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* Copyright (C) 2005 Oracle. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public
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* License as published by the Free Software Foundation,
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* version 2 of the License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public
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* License along with this program; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 021110-1307, USA.
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*
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*/
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/kobject.h>
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#include <linux/sysfs.h>
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#include "ocfs2_nodemanager.h"
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#include "masklog.h"
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#include "sys.h"
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struct o2cb_attribute {
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struct attribute attr;
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ssize_t (*show)(char *buf);
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ssize_t (*store)(const char *buf, size_t count);
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};
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#define O2CB_ATTR(_name, _mode, _show, _store) \
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struct o2cb_attribute o2cb_attr_##_name = __ATTR(_name, _mode, _show, _store)
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#define to_o2cb_subsys(k) container_of(to_kset(k), struct subsystem, kset)
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#define to_o2cb_attr(_attr) container_of(_attr, struct o2cb_attribute, attr)
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static ssize_t o2cb_interface_revision_show(char *buf)
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{
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return snprintf(buf, PAGE_SIZE, "%u\n", O2NM_API_VERSION);
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}
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static O2CB_ATTR(interface_revision, S_IFREG | S_IRUGO, o2cb_interface_revision_show, NULL);
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static struct attribute *o2cb_attrs[] = {
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&o2cb_attr_interface_revision.attr,
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NULL,
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};
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static ssize_t
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o2cb_show(struct kobject * kobj, struct attribute * attr, char * buffer);
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static ssize_t
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o2cb_store(struct kobject * kobj, struct attribute * attr,
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const char * buffer, size_t count);
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static struct sysfs_ops o2cb_sysfs_ops = {
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.show = o2cb_show,
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.store = o2cb_store,
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};
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static struct kobj_type o2cb_subsys_type = {
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.default_attrs = o2cb_attrs,
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.sysfs_ops = &o2cb_sysfs_ops,
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};
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/* gives us o2cb_subsys */
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static decl_subsys(o2cb, NULL, NULL);
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static ssize_t
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o2cb_show(struct kobject * kobj, struct attribute * attr, char * buffer)
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{
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struct o2cb_attribute *o2cb_attr = to_o2cb_attr(attr);
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struct subsystem *sbs = to_o2cb_subsys(kobj);
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BUG_ON(sbs != &o2cb_subsys);
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if (o2cb_attr->show)
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return o2cb_attr->show(buffer);
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return -EIO;
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}
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static ssize_t
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o2cb_store(struct kobject * kobj, struct attribute * attr,
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const char * buffer, size_t count)
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{
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struct o2cb_attribute *o2cb_attr = to_o2cb_attr(attr);
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struct subsystem *sbs = to_o2cb_subsys(kobj);
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BUG_ON(sbs != &o2cb_subsys);
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if (o2cb_attr->store)
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return o2cb_attr->store(buffer, count);
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return -EIO;
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}
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void o2cb_sys_shutdown(void)
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{
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mlog_sys_shutdown();
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subsystem_unregister(&o2cb_subsys);
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}
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int o2cb_sys_init(void)
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{
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int ret;
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o2cb_subsys.kset.kobj.ktype = &o2cb_subsys_type;
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ret = subsystem_register(&o2cb_subsys);
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if (ret)
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return ret;
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ret = mlog_sys_init(&o2cb_subsys);
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if (ret)
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subsystem_unregister(&o2cb_subsys);
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return ret;
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}
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