Commit | Line | Data |
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1da177e4 LT |
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 | #include <linux/fs.h> | |
19 | ||
a7a76cef RD |
20 | #include <linux/types.h> |
21 | ||
22 | struct file_operations; | |
23 | ||
dd308bc3 ME |
24 | struct debugfs_blob_wrapper { |
25 | void *data; | |
26 | unsigned long size; | |
27 | }; | |
28 | ||
1da177e4 LT |
29 | #if defined(CONFIG_DEBUG_FS) |
30 | struct dentry *debugfs_create_file(const char *name, mode_t mode, | |
31 | struct dentry *parent, void *data, | |
99ac48f5 | 32 | const struct file_operations *fops); |
1da177e4 LT |
33 | |
34 | struct dentry *debugfs_create_dir(const char *name, struct dentry *parent); | |
35 | ||
66f54963 PO |
36 | struct dentry *debugfs_create_symlink(const char *name, struct dentry *parent, |
37 | const char *dest); | |
38 | ||
1da177e4 LT |
39 | void debugfs_remove(struct dentry *dentry); |
40 | ||
41 | struct dentry *debugfs_create_u8(const char *name, mode_t mode, | |
42 | struct dentry *parent, u8 *value); | |
43 | struct dentry *debugfs_create_u16(const char *name, mode_t mode, | |
44 | struct dentry *parent, u16 *value); | |
45 | struct dentry *debugfs_create_u32(const char *name, mode_t mode, | |
46 | struct dentry *parent, u32 *value); | |
8447891f ME |
47 | struct dentry *debugfs_create_u64(const char *name, mode_t mode, |
48 | struct dentry *parent, u64 *value); | |
1da177e4 LT |
49 | struct dentry *debugfs_create_bool(const char *name, mode_t mode, |
50 | struct dentry *parent, u32 *value); | |
51 | ||
dd308bc3 ME |
52 | struct dentry *debugfs_create_blob(const char *name, mode_t mode, |
53 | struct dentry *parent, | |
54 | struct debugfs_blob_wrapper *blob); | |
1da177e4 | 55 | #else |
a7a76cef RD |
56 | |
57 | #include <linux/err.h> | |
58 | ||
1da177e4 LT |
59 | /* |
60 | * We do not return NULL from these functions if CONFIG_DEBUG_FS is not enabled | |
61 | * so users have a chance to detect if there was a real error or not. We don't | |
62 | * want to duplicate the design decision mistakes of procfs and devfs again. | |
63 | */ | |
64 | ||
65 | static inline struct dentry *debugfs_create_file(const char *name, mode_t mode, | |
bde11d79 JD |
66 | struct dentry *parent, void *data, |
67 | const struct file_operations *fops) | |
1da177e4 LT |
68 | { |
69 | return ERR_PTR(-ENODEV); | |
70 | } | |
71 | ||
72 | static inline struct dentry *debugfs_create_dir(const char *name, | |
73 | struct dentry *parent) | |
74 | { | |
75 | return ERR_PTR(-ENODEV); | |
76 | } | |
77 | ||
66f54963 PO |
78 | static inline struct dentry *debugfs_create_symlink(const char *name, |
79 | struct dentry *parent, | |
80 | const char *dest) | |
81 | { | |
82 | return ERR_PTR(-ENODEV); | |
83 | } | |
84 | ||
1da177e4 LT |
85 | static inline void debugfs_remove(struct dentry *dentry) |
86 | { } | |
87 | ||
88 | static inline struct dentry *debugfs_create_u8(const char *name, mode_t mode, | |
89 | struct dentry *parent, | |
90 | u8 *value) | |
91 | { | |
92 | return ERR_PTR(-ENODEV); | |
93 | } | |
94 | ||
95 | static inline struct dentry *debugfs_create_u16(const char *name, mode_t mode, | |
96 | struct dentry *parent, | |
7b558637 | 97 | u16 *value) |
1da177e4 LT |
98 | { |
99 | return ERR_PTR(-ENODEV); | |
100 | } | |
101 | ||
102 | static inline struct dentry *debugfs_create_u32(const char *name, mode_t mode, | |
103 | struct dentry *parent, | |
7b558637 | 104 | u32 *value) |
1da177e4 LT |
105 | { |
106 | return ERR_PTR(-ENODEV); | |
107 | } | |
108 | ||
8447891f ME |
109 | static inline struct dentry *debugfs_create_u64(const char *name, mode_t mode, |
110 | struct dentry *parent, | |
111 | u64 *value) | |
112 | { | |
113 | return ERR_PTR(-ENODEV); | |
114 | } | |
115 | ||
1da177e4 LT |
116 | static inline struct dentry *debugfs_create_bool(const char *name, mode_t mode, |
117 | struct dentry *parent, | |
7b558637 | 118 | u32 *value) |
1da177e4 LT |
119 | { |
120 | return ERR_PTR(-ENODEV); | |
121 | } | |
122 | ||
dd308bc3 ME |
123 | static inline struct dentry *debugfs_create_blob(const char *name, mode_t mode, |
124 | struct dentry *parent, | |
125 | struct debugfs_blob_wrapper *blob) | |
126 | { | |
127 | return ERR_PTR(-ENODEV); | |
128 | } | |
129 | ||
1da177e4 LT |
130 | #endif |
131 | ||
132 | #endif |