2 * debugfs.h - a tiny little debug file system
4 * Copyright (C) 2004 Greg Kroah-Hartman <greg@kroah.com>
5 * Copyright (C) 2004 IBM Inc.
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.
11 * debugfs is for people to use instead of /proc or /sys.
12 * See Documentation/DocBook/kernel-api for more details.
20 #include <linux/types.h>
22 struct file_operations;
24 struct debugfs_blob_wrapper {
29 #if defined(CONFIG_DEBUG_FS)
30 struct dentry *debugfs_create_file(const char *name, mode_t mode,
31 struct dentry *parent, void *data,
32 const struct file_operations *fops);
34 struct dentry *debugfs_create_dir(const char *name, struct dentry *parent);
36 struct dentry *debugfs_create_symlink(const char *name, struct dentry *parent,
39 void debugfs_remove(struct dentry *dentry);
41 struct dentry *debugfs_rename(struct dentry *old_dir, struct dentry *old_dentry,
42 struct dentry *new_dir, const char *new_name);
44 struct dentry *debugfs_create_u8(const char *name, mode_t mode,
45 struct dentry *parent, u8 *value);
46 struct dentry *debugfs_create_u16(const char *name, mode_t mode,
47 struct dentry *parent, u16 *value);
48 struct dentry *debugfs_create_u32(const char *name, mode_t mode,
49 struct dentry *parent, u32 *value);
50 struct dentry *debugfs_create_u64(const char *name, mode_t mode,
51 struct dentry *parent, u64 *value);
52 struct dentry *debugfs_create_x8(const char *name, mode_t mode,
53 struct dentry *parent, u8 *value);
54 struct dentry *debugfs_create_x16(const char *name, mode_t mode,
55 struct dentry *parent, u16 *value);
56 struct dentry *debugfs_create_x32(const char *name, mode_t mode,
57 struct dentry *parent, u32 *value);
58 struct dentry *debugfs_create_bool(const char *name, mode_t mode,
59 struct dentry *parent, u32 *value);
61 struct dentry *debugfs_create_blob(const char *name, mode_t mode,
62 struct dentry *parent,
63 struct debugfs_blob_wrapper *blob);
66 #include <linux/err.h>
69 * We do not return NULL from these functions if CONFIG_DEBUG_FS is not enabled
70 * so users have a chance to detect if there was a real error or not. We don't
71 * want to duplicate the design decision mistakes of procfs and devfs again.
74 static inline struct dentry *debugfs_create_file(const char *name, mode_t mode,
75 struct dentry *parent, void *data,
76 const struct file_operations *fops)
78 return ERR_PTR(-ENODEV);
81 static inline struct dentry *debugfs_create_dir(const char *name,
82 struct dentry *parent)
84 return ERR_PTR(-ENODEV);
87 static inline struct dentry *debugfs_create_symlink(const char *name,
88 struct dentry *parent,
91 return ERR_PTR(-ENODEV);
94 static inline void debugfs_remove(struct dentry *dentry)
97 static inline struct dentry *debugfs_rename(struct dentry *old_dir, struct dentry *old_dentry,
98 struct dentry *new_dir, char *new_name)
100 return ERR_PTR(-ENODEV);
103 static inline struct dentry *debugfs_create_u8(const char *name, mode_t mode,
104 struct dentry *parent,
107 return ERR_PTR(-ENODEV);
110 static inline struct dentry *debugfs_create_u16(const char *name, mode_t mode,
111 struct dentry *parent,
114 return ERR_PTR(-ENODEV);
117 static inline struct dentry *debugfs_create_u32(const char *name, mode_t mode,
118 struct dentry *parent,
121 return ERR_PTR(-ENODEV);
124 static inline struct dentry *debugfs_create_u64(const char *name, mode_t mode,
125 struct dentry *parent,
128 return ERR_PTR(-ENODEV);
131 static inline struct dentry *debugfs_create_x8(const char *name, mode_t mode,
132 struct dentry *parent,
135 return ERR_PTR(-ENODEV);
138 static inline struct dentry *debugfs_create_x16(const char *name, mode_t mode,
139 struct dentry *parent,
142 return ERR_PTR(-ENODEV);
145 static inline struct dentry *debugfs_create_x32(const char *name, mode_t mode,
146 struct dentry *parent,
149 return ERR_PTR(-ENODEV);
152 static inline struct dentry *debugfs_create_bool(const char *name, mode_t mode,
153 struct dentry *parent,
156 return ERR_PTR(-ENODEV);
159 static inline struct dentry *debugfs_create_blob(const char *name, mode_t mode,
160 struct dentry *parent,
161 struct debugfs_blob_wrapper *blob)
163 return ERR_PTR(-ENODEV);