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author | Zach Brown <zach.brown@oracle.com> | 2005-12-15 22:31:23 (GMT) |
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committer | Joel Becker <joel.becker@oracle.com> | 2006-01-03 19:45:46 (GMT) |
commit | 98211489d4147e41b11703e4245846d60b3acce4 (patch) | |
tree | f3c9c6b8df5bb001db79bc6314d8cbb5e127b45b /fs/ocfs2/cluster/sys.c | |
parent | a7f6a5fb4bde142b622706e2006ba33f793e13ed (diff) | |
download | linux-fsl-qoriq-98211489d4147e41b11703e4245846d60b3acce4.tar.xz |
[PATCH] OCFS2: The Second Oracle Cluster Filesystem
Node messaging via tcp. Used by the dlm and the file system for point
to point communication between nodes.
Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
Signed-off-by: Kurt Hackel <kurt.hackel@oracle.com>
Diffstat (limited to 'fs/ocfs2/cluster/sys.c')
-rw-r--r-- | fs/ocfs2/cluster/sys.c | 124 |
1 files changed, 124 insertions, 0 deletions
diff --git a/fs/ocfs2/cluster/sys.c b/fs/ocfs2/cluster/sys.c new file mode 100644 index 0000000..f1e9946 --- /dev/null +++ b/fs/ocfs2/cluster/sys.c @@ -0,0 +1,124 @@ +/* -*- mode: c; c-basic-offset: 8; -*- + * vim: noexpandtab sw=8 ts=8 sts=0: + * + * sys.c + * + * OCFS2 cluster sysfs interface + * + * Copyright (C) 2005 Oracle. All rights reserved. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public + * License as published by the Free Software Foundation, + * version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public + * License along with this program; if not, write to the + * Free Software Foundation, Inc., 59 Temple Place - Suite 330, + * Boston, MA 021110-1307, USA. + * + */ + +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/kobject.h> +#include <linux/sysfs.h> + +#include "ocfs2_nodemanager.h" +#include "masklog.h" +#include "sys.h" + +struct o2cb_attribute { + struct attribute attr; + ssize_t (*show)(char *buf); + ssize_t (*store)(const char *buf, size_t count); +}; + +#define O2CB_ATTR(_name, _mode, _show, _store) \ +struct o2cb_attribute o2cb_attr_##_name = __ATTR(_name, _mode, _show, _store) + +#define to_o2cb_subsys(k) container_of(to_kset(k), struct subsystem, kset) +#define to_o2cb_attr(_attr) container_of(_attr, struct o2cb_attribute, attr) + +static ssize_t o2cb_interface_revision_show(char *buf) +{ + return snprintf(buf, PAGE_SIZE, "%u\n", O2NM_API_VERSION); +} + +O2CB_ATTR(interface_revision, S_IFREG | S_IRUGO, o2cb_interface_revision_show, NULL); + +static struct attribute *o2cb_attrs[] = { + &o2cb_attr_interface_revision.attr, + NULL, +}; + +static ssize_t +o2cb_show(struct kobject * kobj, struct attribute * attr, char * buffer); +static ssize_t +o2cb_store(struct kobject * kobj, struct attribute * attr, + const char * buffer, size_t count); +static struct sysfs_ops o2cb_sysfs_ops = { + .show = o2cb_show, + .store = o2cb_store, +}; + +static struct kobj_type o2cb_subsys_type = { + .default_attrs = o2cb_attrs, + .sysfs_ops = &o2cb_sysfs_ops, +}; + +/* gives us o2cb_subsys */ +decl_subsys(o2cb, NULL, NULL); + +static ssize_t +o2cb_show(struct kobject * kobj, struct attribute * attr, char * buffer) +{ + struct o2cb_attribute *o2cb_attr = to_o2cb_attr(attr); + struct subsystem *sbs = to_o2cb_subsys(kobj); + + BUG_ON(sbs != &o2cb_subsys); + + if (o2cb_attr->show) + return o2cb_attr->show(buffer); + return -EIO; +} + +static ssize_t +o2cb_store(struct kobject * kobj, struct attribute * attr, + const char * buffer, size_t count) +{ + struct o2cb_attribute *o2cb_attr = to_o2cb_attr(attr); + struct subsystem *sbs = to_o2cb_subsys(kobj); + + BUG_ON(sbs != &o2cb_subsys); + + if (o2cb_attr->store) + return o2cb_attr->store(buffer, count); + return -EIO; +} + +void o2cb_sys_shutdown(void) +{ + mlog_sys_shutdown(); + subsystem_unregister(&o2cb_subsys); +} + +int o2cb_sys_init(void) +{ + int ret; + + o2cb_subsys.kset.kobj.ktype = &o2cb_subsys_type; + ret = subsystem_register(&o2cb_subsys); + if (ret) + return ret; + + ret = mlog_sys_init(&o2cb_subsys); + if (ret) + subsystem_unregister(&o2cb_subsys); + return ret; +} |