1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
|
// 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 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 */
|
