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1da177e4 LT |
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 | |
63f83c9f | 7 | * the Free Software Foundation; either version 2 of the License, or |
1da177e4 | 8 | * (at your option) any later version. |
63f83c9f | 9 | * |
1da177e4 LT |
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 | |
63f83c9f | 16 | * along with this program; if not, write to the Free Software |
1da177e4 LT |
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> | |
b2e03ca7 | 24 | #include <linux/seq_file.h> |
1da177e4 LT |
25 | #include <asm/uaccess.h> |
26 | #include "jfs_incore.h" | |
27 | #include "jfs_filsys.h" | |
28 | #include "jfs_debug.h" | |
29 | ||
1da177e4 LT |
30 | #ifdef PROC_FS_JFS /* see jfs_debug.h */ |
31 | ||
32 | static struct proc_dir_entry *base; | |
33 | #ifdef CONFIG_JFS_DEBUG | |
b2e03ca7 | 34 | static int jfs_loglevel_proc_show(struct seq_file *m, void *v) |
1da177e4 | 35 | { |
b2e03ca7 AD |
36 | seq_printf(m, "%d\n", jfsloglevel); |
37 | return 0; | |
38 | } | |
1da177e4 | 39 | |
b2e03ca7 AD |
40 | static int jfs_loglevel_proc_open(struct inode *inode, struct file *file) |
41 | { | |
42 | return single_open(file, jfs_loglevel_proc_show, NULL); | |
1da177e4 LT |
43 | } |
44 | ||
b2e03ca7 AD |
45 | static ssize_t jfs_loglevel_proc_write(struct file *file, |
46 | const char __user *buffer, size_t count, loff_t *ppos) | |
1da177e4 LT |
47 | { |
48 | char c; | |
49 | ||
50 | if (get_user(c, buffer)) | |
51 | return -EFAULT; | |
52 | ||
53 | /* yes, I know this is an ASCIIism. --hch */ | |
54 | if (c < '0' || c > '9') | |
55 | return -EINVAL; | |
56 | jfsloglevel = c - '0'; | |
57 | return count; | |
58 | } | |
b2e03ca7 AD |
59 | |
60 | static const struct file_operations jfs_loglevel_proc_fops = { | |
61 | .owner = THIS_MODULE, | |
62 | .open = jfs_loglevel_proc_open, | |
63 | .read = seq_read, | |
64 | .llseek = seq_lseek, | |
65 | .release = single_release, | |
66 | .write = jfs_loglevel_proc_write, | |
67 | }; | |
1da177e4 LT |
68 | #endif |
69 | ||
1da177e4 LT |
70 | static struct { |
71 | const char *name; | |
b2e03ca7 | 72 | const struct file_operations *proc_fops; |
1da177e4 LT |
73 | } Entries[] = { |
74 | #ifdef CONFIG_JFS_STATISTICS | |
b2e03ca7 AD |
75 | { "lmstats", &jfs_lmstats_proc_fops, }, |
76 | { "txstats", &jfs_txstats_proc_fops, }, | |
77 | { "xtstat", &jfs_xtstat_proc_fops, }, | |
78 | { "mpstat", &jfs_mpstat_proc_fops, }, | |
1da177e4 LT |
79 | #endif |
80 | #ifdef CONFIG_JFS_DEBUG | |
b2e03ca7 AD |
81 | { "TxAnchor", &jfs_txanchor_proc_fops, }, |
82 | { "loglevel", &jfs_loglevel_proc_fops } | |
1da177e4 LT |
83 | #endif |
84 | }; | |
e8c96f8c | 85 | #define NPROCENT ARRAY_SIZE(Entries) |
1da177e4 LT |
86 | |
87 | void jfs_proc_init(void) | |
88 | { | |
89 | int i; | |
90 | ||
36a5aeb8 | 91 | if (!(base = proc_mkdir("fs/jfs", NULL))) |
1da177e4 LT |
92 | return; |
93 | base->owner = THIS_MODULE; | |
94 | ||
b2e03ca7 AD |
95 | for (i = 0; i < NPROCENT; i++) |
96 | proc_create(Entries[i].name, 0, base, Entries[i].proc_fops); | |
1da177e4 LT |
97 | } |
98 | ||
99 | void jfs_proc_clean(void) | |
100 | { | |
101 | int i; | |
102 | ||
103 | if (base) { | |
104 | for (i = 0; i < NPROCENT; i++) | |
105 | remove_proc_entry(Entries[i].name, base); | |
36a5aeb8 | 106 | remove_proc_entry("fs/jfs", NULL); |
1da177e4 LT |
107 | } |
108 | } | |
109 | ||
110 | #endif /* PROC_FS_JFS */ |