Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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linux
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
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
9 *
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
16 * along with this program; if not, write to the Free Software
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>
24#include <linux/seq_file.h>
25#include <linux/uaccess.h>
26#include "jfs_incore.h"
27#include "jfs_filsys.h"
28#include "jfs_debug.h"
29
30#ifdef PROC_FS_JFS /* see jfs_debug.h */
31
32#ifdef CONFIG_JFS_DEBUG
33static int jfs_loglevel_proc_show(struct seq_file *m, void *v)
34{
35 seq_printf(m, "%d\n", jfsloglevel);
36 return 0;
37}
38
39static int jfs_loglevel_proc_open(struct inode *inode, struct file *file)
40{
41 return single_open(file, jfs_loglevel_proc_show, NULL);
42}
43
44static ssize_t jfs_loglevel_proc_write(struct file *file,
45 const char __user *buffer, size_t count, loff_t *ppos)
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}
58
59static const struct file_operations jfs_loglevel_proc_fops = {
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};
66#endif
67
68void jfs_proc_init(void)
69{
70 struct proc_dir_entry *base;
71
72 base = proc_mkdir("fs/jfs", NULL);
73 if (!base)
74 return;
75
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
86}
87
88void jfs_proc_clean(void)
89{
90 remove_proc_subtree("fs/jfs", NULL);
91}
92
93#endif /* PROC_FS_JFS */