/* -*- 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
  ", 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);
  }