[linux-2.6-block.git] / fs / jfs / jfs_debug.c

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

#ifdef PROC_FS_JFS /* see jfs_debug.h */

#ifdef CONFIG_JFS_DEBUG
static int jfs_loglevel_proc_show(struct seq_file *m, void *v)
{
	seq_printf(m, "%d\n", 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 = {
	.open		= jfs_loglevel_proc_open,
	.read		= seq_read,
	.llseek		= seq_lseek,
	.release	= single_release,
	.write		= jfs_loglevel_proc_write,
};
#endif

void jfs_proc_init(void)
{
	struct proc_dir_entry *base;

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

#ifdef CONFIG_JFS_STATISTICS
	proc_create_single("lmstats", 0, base, jfs_lmstats_proc_show);
	proc_create_single("txstats", 0, base, jfs_txstats_proc_show);
	proc_create_single("xtstat", 0, base, jfs_xtstat_proc_show);
	proc_create_single("mpstat", 0, base, jfs_mpstat_proc_show);
#endif
#ifdef CONFIG_JFS_DEBUG
	proc_create_single("TxAnchor", 0, base, jfs_txanchor_proc_show);
	proc_create("loglevel", 0, base, &jfs_loglevel_proc_fops);
#endif
}

void jfs_proc_clean(void)
{
	remove_proc_subtree("fs/jfs", NULL);
}

#endif /* PROC_FS_JFS */
Commit	Line	Data
1da177e4 LT	1	/*
	2	* Copyright (C) International Business Machines Corp., 2000-2004
	3	* Portions Copyright (C) Christoph Hellwig, 2001-2002
	4	*
	5	* This program is free software; you can redistribute it and/or modify
	6	* it under the terms of the GNU General Public License as published by
63f83c9f	7	* the Free Software Foundation; either version 2 of the License, or
1da177e4	8	* (at your option) any later version.
63f83c9f	9	*
1da177e4 LT	10	* This program is distributed in the hope that it will be useful,
	11	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	12	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
	13	* the GNU General Public License for more details.
	14	*
	15	* You should have received a copy of the GNU General Public License
63f83c9f	16	* along with this program; if not, write to the Free Software
1da177e4 LT	17	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
	18	*/
	19
	20	#include <linux/fs.h>
	21	#include <linux/ctype.h>
	22	#include <linux/module.h>
	23	#include <linux/proc_fs.h>
b2e03ca7	24	#include <linux/seq_file.h>
7c0f6ba6	25	#include <linux/uaccess.h>
1da177e4 LT	26	#include "jfs_incore.h"
	27	#include "jfs_filsys.h"
	28	#include "jfs_debug.h"
	29
1da177e4 LT	30	#ifdef PROC_FS_JFS /* see jfs_debug.h */
1da177e4 LT	31
1da177e4	32	#ifdef CONFIG_JFS_DEBUG
b2e03ca7	33	static int jfs_loglevel_proc_show(struct seq_file m, void v)
1da177e4	34	{
b2e03ca7 AD	35	seq_printf(m, "%d\n", jfsloglevel);
	36	return 0;
	37	}
1da177e4	38
b2e03ca7 AD	39	static int jfs_loglevel_proc_open(struct inode inode, struct file file)
	40	{
	41	return single_open(file, jfs_loglevel_proc_show, NULL);
1da177e4 LT	42	}
1da177e4 LT	43
b2e03ca7 AD	44	static ssize_t jfs_loglevel_proc_write(struct file *file,
b2e03ca7 AD	45	const char __user buffer, size_t count, loff_t ppos)
1da177e4 LT	46	{
	47	char c;
	48
	49	if (get_user(c, buffer))
	50	return -EFAULT;
	51
	52	/* yes, I know this is an ASCIIism. --hch */
	53	if (c < '0' \|\| c > '9')
	54	return -EINVAL;
	55	jfsloglevel = c - '0';
	56	return count;
	57	}
b2e03ca7 AD	58
b2e03ca7 AD	59	static const struct file_operations jfs_loglevel_proc_fops = {
b2e03ca7 AD	60	.open = jfs_loglevel_proc_open,
	61	.read = seq_read,
	62	.llseek = seq_lseek,
	63	.release = single_release,
	64	.write = jfs_loglevel_proc_write,
	65	};
1da177e4 LT	66	#endif
1da177e4 LT	67
1da177e4 LT	68	void jfs_proc_init(void)
1da177e4 LT	69	{
07a3b8ed	70	struct proc_dir_entry *base;
1da177e4	71
07a3b8ed CH	72	base = proc_mkdir("fs/jfs", NULL);
07a3b8ed CH	73	if (!base)
1da177e4	74	return;
1da177e4	75
07a3b8ed CH	76	#ifdef CONFIG_JFS_STATISTICS
	77	proc_create_single("lmstats", 0, base, jfs_lmstats_proc_show);
	78	proc_create_single("txstats", 0, base, jfs_txstats_proc_show);
	79	proc_create_single("xtstat", 0, base, jfs_xtstat_proc_show);
	80	proc_create_single("mpstat", 0, base, jfs_mpstat_proc_show);
	81	#endif
	82	#ifdef CONFIG_JFS_DEBUG
	83	proc_create_single("TxAnchor", 0, base, jfs_txanchor_proc_show);
	84	proc_create("loglevel", 0, base, &jfs_loglevel_proc_fops);
	85	#endif
1da177e4 LT	86	}
	87
	88	void jfs_proc_clean(void)
	89	{
07a3b8ed	90	remove_proc_subtree("fs/jfs", NULL);
1da177e4 LT	91	}
	92
	93	#endif /* PROC_FS_JFS */