[mirror_ubuntu-jammy-kernel.git] / fs / jfs / jfs_debug.c

// SPDX-License-Identifier: GPL-2.0-or-later
/*
 *   Copyright (C) International Business Machines Corp., 2000-2004
 *   Portions Copyright (C) Christoph Hellwig, 2001-2002
 */

#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
1a59d1b8	1	// SPDX-License-Identifier: GPL-2.0-or-later
1da177e4 LT	2	/*
	3	* Copyright (C) International Business Machines Corp., 2000-2004
	4	* Portions Copyright (C) Christoph Hellwig, 2001-2002
1da177e4 LT	5	*/
	6
	7	#include <linux/fs.h>
	8	#include <linux/ctype.h>
	9	#include <linux/module.h>
	10	#include <linux/proc_fs.h>
b2e03ca7	11	#include <linux/seq_file.h>
7c0f6ba6	12	#include <linux/uaccess.h>
1da177e4 LT	13	#include "jfs_incore.h"
	14	#include "jfs_filsys.h"
	15	#include "jfs_debug.h"
	16
1da177e4 LT	17	#ifdef PROC_FS_JFS /* see jfs_debug.h */
1da177e4 LT	18
1da177e4	19	#ifdef CONFIG_JFS_DEBUG
b2e03ca7	20	static int jfs_loglevel_proc_show(struct seq_file m, void v)
1da177e4	21	{
b2e03ca7 AD	22	seq_printf(m, "%d\n", jfsloglevel);
	23	return 0;
	24	}
1da177e4	25
b2e03ca7 AD	26	static int jfs_loglevel_proc_open(struct inode inode, struct file file)
	27	{
	28	return single_open(file, jfs_loglevel_proc_show, NULL);
1da177e4 LT	29	}
1da177e4 LT	30
b2e03ca7 AD	31	static ssize_t jfs_loglevel_proc_write(struct file *file,
b2e03ca7 AD	32	const char __user buffer, size_t count, loff_t ppos)
1da177e4 LT	33	{
	34	char c;
	35
	36	if (get_user(c, buffer))
	37	return -EFAULT;
	38
	39	/* yes, I know this is an ASCIIism. --hch */
	40	if (c < '0' \|\| c > '9')
	41	return -EINVAL;
	42	jfsloglevel = c - '0';
	43	return count;
	44	}
b2e03ca7 AD	45
b2e03ca7 AD	46	static const struct file_operations jfs_loglevel_proc_fops = {
b2e03ca7 AD	47	.open = jfs_loglevel_proc_open,
	48	.read = seq_read,
	49	.llseek = seq_lseek,
	50	.release = single_release,
	51	.write = jfs_loglevel_proc_write,
	52	};
1da177e4 LT	53	#endif
1da177e4 LT	54
1da177e4 LT	55	void jfs_proc_init(void)
1da177e4 LT	56	{
07a3b8ed	57	struct proc_dir_entry *base;
1da177e4	58
07a3b8ed CH	59	base = proc_mkdir("fs/jfs", NULL);
07a3b8ed CH	60	if (!base)
1da177e4	61	return;
1da177e4	62
07a3b8ed CH	63	#ifdef CONFIG_JFS_STATISTICS
	64	proc_create_single("lmstats", 0, base, jfs_lmstats_proc_show);
	65	proc_create_single("txstats", 0, base, jfs_txstats_proc_show);
	66	proc_create_single("xtstat", 0, base, jfs_xtstat_proc_show);
	67	proc_create_single("mpstat", 0, base, jfs_mpstat_proc_show);
	68	#endif
	69	#ifdef CONFIG_JFS_DEBUG
	70	proc_create_single("TxAnchor", 0, base, jfs_txanchor_proc_show);
	71	proc_create("loglevel", 0, base, &jfs_loglevel_proc_fops);
	72	#endif
1da177e4 LT	73	}
	74
	75	void jfs_proc_clean(void)
	76	{
07a3b8ed	77	remove_proc_subtree("fs/jfs", NULL);
1da177e4 LT	78	}
	79
	80	#endif /* PROC_FS_JFS */