masklog.c
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/* -*- mode: c; c-basic-offset: 8; -*-
* vim: noexpandtab sw=8 ts=8 sts=0:
*
* Copyright (C) 2004, 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; either
* version 2 of the License, or (at your option) any later version.
*
* 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/module.h>
#include <linux/kernel.h>
#include <linux/proc_fs.h>
#include <linux/seq_file.h>
#include <linux/string.h>
#include <asm/uaccess.h>
#include "masklog.h"
struct mlog_bits mlog_and_bits = MLOG_BITS_RHS(MLOG_INITIAL_AND_MASK);
EXPORT_SYMBOL_GPL(mlog_and_bits);
struct mlog_bits mlog_not_bits = MLOG_BITS_RHS(0);
EXPORT_SYMBOL_GPL(mlog_not_bits);
static ssize_t mlog_mask_show(u64 mask, char *buf)
{
char *state;
if (__mlog_test_u64(mask, mlog_and_bits))
state = "allow";
else if (__mlog_test_u64(mask, mlog_not_bits))
state = "deny";
else
state = "off";
return snprintf(buf, PAGE_SIZE, "%s\n", state);
}
static ssize_t mlog_mask_store(u64 mask, const char *buf, size_t count)
{
if (!strnicmp(buf, "allow", 5)) {
__mlog_set_u64(mask, mlog_and_bits);
__mlog_clear_u64(mask, mlog_not_bits);
} else if (!strnicmp(buf, "deny", 4)) {
__mlog_set_u64(mask, mlog_not_bits);
__mlog_clear_u64(mask, mlog_and_bits);
} else if (!strnicmp(buf, "off", 3)) {
__mlog_clear_u64(mask, mlog_not_bits);
__mlog_clear_u64(mask, mlog_and_bits);
} else
return -EINVAL;
return count;
}
struct mlog_attribute {
struct attribute attr;
u64 mask;
};
#define to_mlog_attr(_attr) container_of(_attr, struct mlog_attribute, attr)
#define define_mask(_name) { \
.attr = { \
.name = #_name, \
.mode = S_IRUGO | S_IWUSR, \
}, \
.mask = ML_##_name, \
}
static struct mlog_attribute mlog_attrs[MLOG_MAX_BITS] = {
define_mask(TCP),
define_mask(MSG),
define_mask(SOCKET),
define_mask(HEARTBEAT),
define_mask(HB_BIO),
define_mask(DLMFS),
define_mask(DLM),
define_mask(DLM_DOMAIN),
define_mask(DLM_THREAD),
define_mask(DLM_MASTER),
define_mask(DLM_RECOVERY),
define_mask(DLM_GLUE),
define_mask(VOTE),
define_mask(CONN),
define_mask(QUORUM),
define_mask(BASTS),
define_mask(CLUSTER),
define_mask(ERROR),
define_mask(NOTICE),
define_mask(KTHREAD),
};
static struct attribute *mlog_attr_ptrs[MLOG_MAX_BITS] = {NULL, };
static ssize_t mlog_show(struct kobject *obj, struct attribute *attr,
char *buf)
{
struct mlog_attribute *mlog_attr = to_mlog_attr(attr);
return mlog_mask_show(mlog_attr->mask, buf);
}
static ssize_t mlog_store(struct kobject *obj, struct attribute *attr,
const char *buf, size_t count)
{
struct mlog_attribute *mlog_attr = to_mlog_attr(attr);
return mlog_mask_store(mlog_attr->mask, buf, count);
}
static const struct sysfs_ops mlog_attr_ops = {
.show = mlog_show,
.store = mlog_store,
};
static struct kobj_type mlog_ktype = {
.default_attrs = mlog_attr_ptrs,
.sysfs_ops = &mlog_attr_ops,
};
static struct kset mlog_kset = {
.kobj = {.ktype = &mlog_ktype},
};
int mlog_sys_init(struct kset *o2cb_kset)
{
int i = 0;
while (mlog_attrs[i].attr.mode) {
mlog_attr_ptrs[i] = &mlog_attrs[i].attr;
i++;
}
mlog_attr_ptrs[i] = NULL;
kobject_set_name(&mlog_kset.kobj, "logmask");
mlog_kset.kobj.kset = o2cb_kset;
return kset_register(&mlog_kset);
}
void mlog_sys_shutdown(void)
{
kset_unregister(&mlog_kset);
}