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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 <asm/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 | static struct proc_dir_entry *base; |
33 | #ifdef CONFIG_JFS_DEBUG |
34 | static int jfs_loglevel_proc_show(struct seq_file *m, void *v) |
35 | { |
36 | seq_printf(m, "%d\n", jfsloglevel); |
37 | return 0; |
38 | } |
39 | |
40 | static int jfs_loglevel_proc_open(struct inode *inode, struct file *file) |
41 | { |
42 | return single_open(file, jfs_loglevel_proc_show, NULL); |
43 | } |
44 | |
45 | static ssize_t jfs_loglevel_proc_write(struct file *file, |
46 | const char __user *buffer, size_t count, loff_t *ppos) |
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 | } |
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 | }; |
68 | #endif |
69 | |
70 | static struct { |
71 | const char *name; |
72 | const struct file_operations *proc_fops; |
73 | } Entries[] = { |
74 | #ifdef CONFIG_JFS_STATISTICS |
75 | { "lmstats", &jfs_lmstats_proc_fops, }, |
76 | { "txstats", &jfs_txstats_proc_fops, }, |
77 | { "xtstat", &jfs_xtstat_proc_fops, }, |
78 | { "mpstat", &jfs_mpstat_proc_fops, }, |
79 | #endif |
80 | #ifdef CONFIG_JFS_DEBUG |
81 | { "TxAnchor", &jfs_txanchor_proc_fops, }, |
82 | { "loglevel", &jfs_loglevel_proc_fops } |
83 | #endif |
84 | }; |
85 | #define NPROCENT ARRAY_SIZE(Entries) |
86 | |
87 | void jfs_proc_init(void) |
88 | { |
89 | int i; |
90 | |
91 | if (!(base = proc_mkdir("fs/jfs", NULL))) |
92 | return; |
93 | |
94 | for (i = 0; i < NPROCENT; i++) |
95 | proc_create(Entries[i].name, 0, base, Entries[i].proc_fops); |
96 | } |
97 | |
98 | void jfs_proc_clean(void) |
99 | { |
100 | int i; |
101 | |
102 | if (base) { |
103 | for (i = 0; i < NPROCENT; i++) |
104 | remove_proc_entry(Entries[i].name, base); |
105 | remove_proc_entry("fs/jfs", NULL); |
106 | } |
107 | } |
108 | |
109 | #endif /* PROC_FS_JFS */ |
110 |
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Tags:
od-2011-09-04
od-2011-09-18
v2.6.34-rc5
v2.6.34-rc6
v2.6.34-rc7
v3.9