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/******************************************************************************
*******************************************************************************
**
** Copyright (C) 2005 Red Hat, Inc. All rights reserved.
**
** This copyrighted material is made available to anyone wishing to use,
** modify, copy, or redistribute it subject to the terms and conditions
** of the GNU General Public License v.2.
**
*******************************************************************************
******************************************************************************/
#include <linux/ctype.h>
#include <linux/stat.h>
#include "lock_dlm.h"
static ssize_t gdlm_block_show(struct gdlm_ls *ls, char *buf)
{
ssize_t ret;
int val = 0;
if (test_bit(DFL_BLOCK_LOCKS, &ls->flags))
val = 1;
ret = sprintf(buf, "%d\n", val);
return ret;
}
static ssize_t gdlm_block_store(struct gdlm_ls *ls, const char *buf, size_t len)
{
ssize_t ret = len;
int val;
val = simple_strtol(buf, NULL, 0);
if (val == 1)
set_bit(DFL_BLOCK_LOCKS, &ls->flags);
else if (val == 0) {
clear_bit(DFL_BLOCK_LOCKS, &ls->flags);
gdlm_submit_delayed(ls);
} else
ret = -EINVAL;
return ret;
}
static ssize_t gdlm_mounted_show(struct gdlm_ls *ls, char *buf)
{
ssize_t ret;
int val = -2;
if (test_bit(DFL_TERMINATE, &ls->flags))
val = -1;
else if (test_bit(DFL_LEAVE_DONE, &ls->flags))
val = 0;
else if (test_bit(DFL_JOIN_DONE, &ls->flags))
val = 1;
ret = sprintf(buf, "%d\n", val);
return ret;
}
static ssize_t gdlm_mounted_store(struct gdlm_ls *ls, const char *buf, size_t len)
{
ssize_t ret = len;
int val;
val = simple_strtol(buf, NULL, 0);
if (val == 1)
set_bit(DFL_JOIN_DONE, &ls->flags);
else if (val == 0)
set_bit(DFL_LEAVE_DONE, &ls->flags);
else if (val == -1) {
set_bit(DFL_TERMINATE, &ls->flags);
set_bit(DFL_JOIN_DONE, &ls->flags);
set_bit(DFL_LEAVE_DONE, &ls->flags);
} else
ret = -EINVAL;
wake_up(&ls->wait_control);
return ret;
}
static ssize_t gdlm_withdraw_show(struct gdlm_ls *ls, char *buf)
{
ssize_t ret;
int val = 0;
if (test_bit(DFL_WITHDRAW, &ls->flags))
val = 1;
ret = sprintf(buf, "%d\n", val);
return ret;
}
static ssize_t gdlm_withdraw_store(struct gdlm_ls *ls, const char *buf, size_t len)
{
ssize_t ret = len;
int val;
val = simple_strtol(buf, NULL, 0);
if (val == 1)
set_bit(DFL_WITHDRAW, &ls->flags);
else
ret = -EINVAL;
wake_up(&ls->wait_control);
return ret;
}
static ssize_t gdlm_jid_show(struct gdlm_ls *ls, char *buf)
{
return sprintf(buf, "%u\n", ls->jid);
}
static ssize_t gdlm_jid_store(struct gdlm_ls *ls, const char *buf, size_t len)
{
ls->jid = simple_strtol(buf, NULL, 0);
return len;
}
static ssize_t gdlm_first_show(struct gdlm_ls *ls, char *buf)
{
return sprintf(buf, "%u\n", ls->first);
}
static ssize_t gdlm_first_store(struct gdlm_ls *ls, const char *buf, size_t len)
{
ls->first = simple_strtol(buf, NULL, 0);
return len;
}
static ssize_t gdlm_first_done_show(struct gdlm_ls *ls, char *buf)
{
return sprintf(buf, "%d\n", ls->first_done);
}
static ssize_t gdlm_recover_show(struct gdlm_ls *ls, char *buf)
{
return sprintf(buf, "%u\n", ls->recover_jid);
}
static ssize_t gdlm_recover_store(struct gdlm_ls *ls, const char *buf, size_t len)
{
ls->recover_jid = simple_strtol(buf, NULL, 0);
ls->fscb(ls->fsdata, LM_CB_NEED_RECOVERY, &ls->recover_jid);
return len;
}
static ssize_t gdlm_recover_done_show(struct gdlm_ls *ls, char *buf)
{
ssize_t ret;
ret = sprintf(buf, "%d\n", ls->recover_done);
return ret;
}
static ssize_t gdlm_cluster_show(struct gdlm_ls *ls, char *buf)
{
ssize_t ret;
ret = sprintf(buf, "%s\n", ls->clustername);
return ret;
}
static ssize_t gdlm_options_show(struct gdlm_ls *ls, char *buf)
{
ssize_t ret = 0;
if (ls->fsflags & LM_MFLAG_SPECTATOR)
ret += sprintf(buf, "spectator ");
return ret;
}
struct gdlm_attr {
struct attribute attr;
ssize_t (*show)(struct gdlm_ls *, char *);
ssize_t (*store)(struct gdlm_ls *, const char *, size_t);
};
static struct gdlm_attr gdlm_attr_block = {
.attr = {.name = "block", .mode = S_IRUGO | S_IWUSR},
.show = gdlm_block_show,
.store = gdlm_block_store
};
static struct gdlm_attr gdlm_attr_mounted = {
.attr = {.name = "mounted", .mode = S_IRUGO | S_IWUSR},
.show = gdlm_mounted_show,
.store = gdlm_mounted_store
};
static struct gdlm_attr gdlm_attr_withdraw = {
.attr = {.name = "withdraw", .mode = S_IRUGO | S_IWUSR},
.show = gdlm_withdraw_show,
.store = gdlm_withdraw_store
};
static struct gdlm_attr gdlm_attr_jid = {
.attr = {.name = "jid", .mode = S_IRUGO | S_IWUSR},
.show = gdlm_jid_show,
.store = gdlm_jid_store
};
static struct gdlm_attr gdlm_attr_first = {
.attr = {.name = "first", .mode = S_IRUGO | S_IWUSR},
.show = gdlm_first_show,
.store = gdlm_first_store
};
static struct gdlm_attr gdlm_attr_first_done = {
.attr = {.name = "first_done", .mode = S_IRUGO},
.show = gdlm_first_done_show,
};
static struct gdlm_attr gdlm_attr_recover = {
.attr = {.name = "recover", .mode = S_IRUGO | S_IWUSR},
.show = gdlm_recover_show,
.store = gdlm_recover_store
};
static struct gdlm_attr gdlm_attr_recover_done = {
.attr = {.name = "recover_done", .mode = S_IRUGO | S_IWUSR},
.show = gdlm_recover_done_show,
};
static struct gdlm_attr gdlm_attr_cluster = {
.attr = {.name = "cluster", .mode = S_IRUGO | S_IWUSR},
.show = gdlm_cluster_show,
};
static struct gdlm_attr gdlm_attr_options = {
.attr = {.name = "options", .mode = S_IRUGO | S_IWUSR},
.show = gdlm_options_show,
};
static struct attribute *gdlm_attrs[] = {
&gdlm_attr_block.attr,
&gdlm_attr_mounted.attr,
&gdlm_attr_withdraw.attr,
&gdlm_attr_jid.attr,
&gdlm_attr_first.attr,
&gdlm_attr_first_done.attr,
&gdlm_attr_recover.attr,
&gdlm_attr_recover_done.attr,
&gdlm_attr_cluster.attr,
&gdlm_attr_options.attr,
NULL,
};
static ssize_t gdlm_attr_show(struct kobject *kobj, struct attribute *attr,
char *buf)
{
struct gdlm_ls *ls = container_of(kobj, struct gdlm_ls, kobj);
struct gdlm_attr *a = container_of(attr, struct gdlm_attr, attr);
return a->show ? a->show(ls, buf) : 0;
}
static ssize_t gdlm_attr_store(struct kobject *kobj, struct attribute *attr,
const char *buf, size_t len)
{
struct gdlm_ls *ls = container_of(kobj, struct gdlm_ls, kobj);
struct gdlm_attr *a = container_of(attr, struct gdlm_attr, attr);
return a->store ? a->store(ls, buf, len) : len;
}
static struct sysfs_ops gdlm_attr_ops = {
.show = gdlm_attr_show,
.store = gdlm_attr_store,
};
static struct kobj_type gdlm_ktype = {
.default_attrs = gdlm_attrs,
.sysfs_ops = &gdlm_attr_ops,
};
static struct kset gdlm_kset = {
.subsys = &kernel_subsys,
.kobj = {.name = "lock_dlm",},
.ktype = &gdlm_ktype,
};
int gdlm_kobject_setup(struct gdlm_ls *ls)
{
int error;
error = kobject_set_name(&ls->kobj, "%s", ls->fsname);
if (error)
return error;
ls->kobj.kset = &gdlm_kset;
ls->kobj.ktype = &gdlm_ktype;
error = kobject_register(&ls->kobj);
return 0;
}
void gdlm_kobject_release(struct gdlm_ls *ls)
{
kobject_unregister(&ls->kobj);
}
int gdlm_sysfs_init(void)
{
int error;
error = kset_register(&gdlm_kset);
if (error)
printk("lock_dlm: cannot register kset %d\n", error);
return error;
}
void gdlm_sysfs_exit(void)
{
kset_unregister(&gdlm_kset);
}
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