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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 | ||
ae79cdaa | 29 | extern struct dentry *arch_debugfs_dir; |
30 | ||
1da177e4 | 31 | #if defined(CONFIG_DEBUG_FS) |
3634634e HH |
32 | |
33 | /* declared over in file.c */ | |
34 | extern const struct file_operations debugfs_file_operations; | |
35 | extern const struct inode_operations debugfs_link_operations; | |
36 | ||
1da177e4 LT |
37 | struct dentry *debugfs_create_file(const char *name, mode_t mode, |
38 | struct dentry *parent, void *data, | |
99ac48f5 | 39 | const struct file_operations *fops); |
1da177e4 LT |
40 | |
41 | struct dentry *debugfs_create_dir(const char *name, struct dentry *parent); | |
42 | ||
66f54963 PO |
43 | struct dentry *debugfs_create_symlink(const char *name, struct dentry *parent, |
44 | const char *dest); | |
45 | ||
1da177e4 | 46 | void debugfs_remove(struct dentry *dentry); |
9505e637 | 47 | void debugfs_remove_recursive(struct dentry *dentry); |
1da177e4 | 48 | |
cfc94cdf JK |
49 | struct dentry *debugfs_rename(struct dentry *old_dir, struct dentry *old_dentry, |
50 | struct dentry *new_dir, const char *new_name); | |
51 | ||
1da177e4 LT |
52 | struct dentry *debugfs_create_u8(const char *name, mode_t mode, |
53 | struct dentry *parent, u8 *value); | |
54 | struct dentry *debugfs_create_u16(const char *name, mode_t mode, | |
55 | struct dentry *parent, u16 *value); | |
56 | struct dentry *debugfs_create_u32(const char *name, mode_t mode, | |
57 | struct dentry *parent, u32 *value); | |
8447891f ME |
58 | struct dentry *debugfs_create_u64(const char *name, mode_t mode, |
59 | struct dentry *parent, u64 *value); | |
2ebefc50 RG |
60 | struct dentry *debugfs_create_x8(const char *name, mode_t mode, |
61 | struct dentry *parent, u8 *value); | |
62 | struct dentry *debugfs_create_x16(const char *name, mode_t mode, | |
63 | struct dentry *parent, u16 *value); | |
64 | struct dentry *debugfs_create_x32(const char *name, mode_t mode, | |
65 | struct dentry *parent, u32 *value); | |
1da177e4 LT |
66 | struct dentry *debugfs_create_bool(const char *name, mode_t mode, |
67 | struct dentry *parent, u32 *value); | |
68 | ||
dd308bc3 ME |
69 | struct dentry *debugfs_create_blob(const char *name, mode_t mode, |
70 | struct dentry *parent, | |
71 | struct debugfs_blob_wrapper *blob); | |
1da177e4 | 72 | #else |
a7a76cef RD |
73 | |
74 | #include <linux/err.h> | |
75 | ||
1da177e4 LT |
76 | /* |
77 | * We do not return NULL from these functions if CONFIG_DEBUG_FS is not enabled | |
78 | * so users have a chance to detect if there was a real error or not. We don't | |
79 | * want to duplicate the design decision mistakes of procfs and devfs again. | |
80 | */ | |
81 | ||
82 | static inline struct dentry *debugfs_create_file(const char *name, mode_t mode, | |
bde11d79 JD |
83 | struct dentry *parent, void *data, |
84 | const struct file_operations *fops) | |
1da177e4 LT |
85 | { |
86 | return ERR_PTR(-ENODEV); | |
87 | } | |
88 | ||
89 | static inline struct dentry *debugfs_create_dir(const char *name, | |
90 | struct dentry *parent) | |
91 | { | |
92 | return ERR_PTR(-ENODEV); | |
93 | } | |
94 | ||
66f54963 PO |
95 | static inline struct dentry *debugfs_create_symlink(const char *name, |
96 | struct dentry *parent, | |
97 | const char *dest) | |
98 | { | |
99 | return ERR_PTR(-ENODEV); | |
100 | } | |
101 | ||
1da177e4 LT |
102 | static inline void debugfs_remove(struct dentry *dentry) |
103 | { } | |
104 | ||
9505e637 HS |
105 | static inline void debugfs_remove_recursive(struct dentry *dentry) |
106 | { } | |
107 | ||
cfc94cdf JK |
108 | static inline struct dentry *debugfs_rename(struct dentry *old_dir, struct dentry *old_dentry, |
109 | struct dentry *new_dir, char *new_name) | |
110 | { | |
111 | return ERR_PTR(-ENODEV); | |
112 | } | |
113 | ||
1da177e4 LT |
114 | static inline struct dentry *debugfs_create_u8(const char *name, mode_t mode, |
115 | struct dentry *parent, | |
116 | u8 *value) | |
117 | { | |
118 | return ERR_PTR(-ENODEV); | |
119 | } | |
120 | ||
121 | static inline struct dentry *debugfs_create_u16(const char *name, mode_t mode, | |
122 | struct dentry *parent, | |
7b558637 | 123 | u16 *value) |
1da177e4 LT |
124 | { |
125 | return ERR_PTR(-ENODEV); | |
126 | } | |
127 | ||
128 | static inline struct dentry *debugfs_create_u32(const char *name, mode_t mode, | |
129 | struct dentry *parent, | |
7b558637 | 130 | u32 *value) |
1da177e4 LT |
131 | { |
132 | return ERR_PTR(-ENODEV); | |
133 | } | |
134 | ||
8447891f ME |
135 | static inline struct dentry *debugfs_create_u64(const char *name, mode_t mode, |
136 | struct dentry *parent, | |
137 | u64 *value) | |
138 | { | |
139 | return ERR_PTR(-ENODEV); | |
140 | } | |
141 | ||
2ebefc50 RG |
142 | static inline struct dentry *debugfs_create_x8(const char *name, mode_t mode, |
143 | struct dentry *parent, | |
144 | u8 *value) | |
145 | { | |
146 | return ERR_PTR(-ENODEV); | |
147 | } | |
148 | ||
149 | static inline struct dentry *debugfs_create_x16(const char *name, mode_t mode, | |
150 | struct dentry *parent, | |
151 | u16 *value) | |
152 | { | |
153 | return ERR_PTR(-ENODEV); | |
154 | } | |
155 | ||
156 | static inline struct dentry *debugfs_create_x32(const char *name, mode_t mode, | |
157 | struct dentry *parent, | |
158 | u32 *value) | |
159 | { | |
160 | return ERR_PTR(-ENODEV); | |
161 | } | |
162 | ||
1da177e4 LT |
163 | static inline struct dentry *debugfs_create_bool(const char *name, mode_t mode, |
164 | struct dentry *parent, | |
7b558637 | 165 | u32 *value) |
1da177e4 LT |
166 | { |
167 | return ERR_PTR(-ENODEV); | |
168 | } | |
169 | ||
dd308bc3 ME |
170 | static inline struct dentry *debugfs_create_blob(const char *name, mode_t mode, |
171 | struct dentry *parent, | |
172 | struct debugfs_blob_wrapper *blob) | |
173 | { | |
174 | return ERR_PTR(-ENODEV); | |
175 | } | |
176 | ||
1da177e4 LT |
177 | #endif |
178 | ||
179 | #endif |