1 /*
2 * debugfs.h - a tiny little debug file system
3 *
4 * Copyright (C) 2004 Greg Kroah-Hartman <greg@kroah.com>
5 * Copyright (C) 2004 IBM Inc.
6 *
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License version
9 * 2 as published by the Free Software Foundation.
10 *
11 * debugfs is for people to use instead of /proc or /sys.
12 * See Documentation/DocBook/kernel-api for more details.
13 */
14
15 #ifndef _DEBUGFS_H_
16 #define _DEBUGFS_H_
17
18 #if defined(CONFIG_DEBUG_FS)
19 struct dentry *debugfs_create_file(const char *name, mode_t mode,
20 struct dentry *parent, void *data,
21 struct file_operations *fops);
22
23 struct dentry *debugfs_create_dir(const char *name, struct dentry *parent);
24
25 void debugfs_remove(struct dentry *dentry);
26
27 struct dentry *debugfs_create_u8(const char *name, mode_t mode,
28 struct dentry *parent, u8 *value);
29 struct dentry *debugfs_create_u16(const char *name, mode_t mode,
30 struct dentry *parent, u16 *value);
31 struct dentry *debugfs_create_u32(const char *name, mode_t mode,
32 struct dentry *parent, u32 *value);
33 struct dentry *debugfs_create_bool(const char *name, mode_t mode,
34 struct dentry *parent, u32 *value);
35
36 #else
37 /*
38 * We do not return NULL from these functions if CONFIG_DEBUG_FS is not enabled
39 * so users have a chance to detect if there was a real error or not. We don't
40 * want to duplicate the design decision mistakes of procfs and devfs again.
41 */
42
43 static inline struct dentry *debugfs_create_file(const char *name, mode_t mode,
44 struct dentry *parent,
45 void *data,
46 struct file_operations *fops)
47 {
48 return ERR_PTR(-ENODEV);
49 }
50
51 static inline struct dentry *debugfs_create_dir(const char *name,
52 struct dentry *parent)
53 {
54 return ERR_PTR(-ENODEV);
55 }
56
57 static inline void debugfs_remove(struct dentry *dentry)
58 { }
59
60 static inline struct dentry *debugfs_create_u8(const char *name, mode_t mode,
61 struct dentry *parent,
62 u8 *value)
63 {
64 return ERR_PTR(-ENODEV);
65 }
66
67 static inline struct dentry *debugfs_create_u16(const char *name, mode_t mode,
68 struct dentry *parent,
69 u8 *value)
70 {
71 return ERR_PTR(-ENODEV);
72 }
73
74 static inline struct dentry *debugfs_create_u32(const char *name, mode_t mode,
75 struct dentry *parent,
76 u8 *value)
77 {
78 return ERR_PTR(-ENODEV);
79 }
80
81 static inline struct dentry *debugfs_create_bool(const char *name, mode_t mode,
82 struct dentry *parent,
83 u8 *value)
84 {
85 return ERR_PTR(-ENODEV);
86 }
87
88 #endif
89
90 #endif
91
|
This page was automatically generated by the
LXR engine.
|