// 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_DEBUGstatic 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 proc_ops jfs_loglevel_proc_ops = {	.proc_open	= jfs_loglevel_proc_open,	.proc_read	= seq_read,	.proc_lseek	= seq_lseek,	.proc_release	= single_release,	.proc_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_ops);#endif} void jfs_proc_clean(void){	remove_proc_subtree("fs/jfs", NULL);} #endif /* PROC_FS_JFS */