/*
   *   Copyright (C) International Business Machines Corp., 2000-2004
   *   Portions Copyright (C) Christoph Hellwig, 2001-2002
   *
   *   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 02111-1307 USA
   */
  
  #include <linux/fs.h>
  #include <linux/ctype.h>
  #include <linux/module.h>
  #include <linux/proc_fs.h>

  #include <linux/seq_file.h>

  #include <asm/uaccess.h>
  #include "jfs_incore.h"
  #include "jfs_filsys.h"
  #include "jfs_debug.h"

  #ifdef PROC_FS_JFS /* see jfs_debug.h */
  
  static struct proc_dir_entry *base;
  #ifdef CONFIG_JFS_DEBUG

  static int jfs_loglevel_proc_show(struct seq_file *m, void *v)

  {

  	seq_printf(m, "%d
  ", jfsloglevel);
  	return 0;
  }

  static int jfs_loglevel_proc_open(struct inode *inode, struct file *file)
  {
  	return single_open(file, jfs_loglevel_proc_show, NULL);

  }

  static ssize_t jfs_loglevel_proc_write(struct file *file,
  		const char __user *buffer, size_t count, loff_t *ppos)

  {
  	char c;
  
  	if (get_user(c, buffer))
  		return -EFAULT;
  
  	/* yes, I know this is an ASCIIism.  --hch */
  	if (c < '0' || c > '9')
  		return -EINVAL;
  	jfsloglevel = c - '0';
  	return count;
  }

  
  static const struct file_operations jfs_loglevel_proc_fops = {
  	.owner		= THIS_MODULE,
  	.open		= jfs_loglevel_proc_open,
  	.read		= seq_read,
  	.llseek		= seq_lseek,
  	.release	= single_release,
  	.write		= jfs_loglevel_proc_write,
  };

  #endif

  static struct {
  	const char	*name;

  	const struct file_operations *proc_fops;

  } Entries[] = {
  #ifdef CONFIG_JFS_STATISTICS

  	{ "lmstats",	&jfs_lmstats_proc_fops, },
  	{ "txstats",	&jfs_txstats_proc_fops, },
  	{ "xtstat",	&jfs_xtstat_proc_fops, },
  	{ "mpstat",	&jfs_mpstat_proc_fops, },

  #endif
  #ifdef CONFIG_JFS_DEBUG

  	{ "TxAnchor",	&jfs_txanchor_proc_fops, },
  	{ "loglevel",	&jfs_loglevel_proc_fops }

  #endif
  };

  #define NPROCENT	ARRAY_SIZE(Entries)

  
  void jfs_proc_init(void)
  {
  	int i;

  	if (!(base = proc_mkdir("fs/jfs", NULL)))

  		return;

  	for (i = 0; i < NPROCENT; i++)
  		proc_create(Entries[i].name, 0, base, Entries[i].proc_fops);

  }
  
  void jfs_proc_clean(void)
  {
  	int i;
  
  	if (base) {
  		for (i = 0; i < NPROCENT; i++)
  			remove_proc_entry(Entries[i].name, base);

  		remove_proc_entry("fs/jfs", NULL);

  	}
  }
  
  #endif /* PROC_FS_JFS */