81 строка
1.9 KiB
C
81 строка
1.9 KiB
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 */
|