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)
31 /* declared over in file.c */
32 extern const struct file_operations debugfs_file_operations;
33 extern const struct inode_operations debugfs_link_operations;
35 struct dentry *debugfs_create_file(const char *name, mode_t mode,
36 struct dentry *parent, void *data,
37 const struct file_operations *fops);
39 struct dentry *debugfs_create_dir(const char *name, struct dentry *parent);
41 struct dentry *debugfs_create_symlink(const char *name, struct dentry *parent,
44 void debugfs_remove(struct dentry *dentry);
46 struct dentry *debugfs_rename(struct dentry *old_dir, struct dentry *old_dentry,
47 struct dentry *new_dir, const char *new_name);
49 struct dentry *debugfs_create_u8(const char *name, mode_t mode,
50 struct dentry *parent, u8 *value);
51 struct dentry *debugfs_create_u16(const char *name, mode_t mode,
52 struct dentry *parent, u16 *value);
53 struct dentry *debugfs_create_u32(const char *name, mode_t mode,
54 struct dentry *parent, u32 *value);
55 struct dentry *debugfs_create_u64(const char *name, mode_t mode,
56 struct dentry *parent, u64 *value);
57 struct dentry *debugfs_create_x8(const char *name, mode_t mode,
58 struct dentry *parent, u8 *value);
59 struct dentry *debugfs_create_x16(const char *name, mode_t mode,
60 struct dentry *parent, u16 *value);
61 struct dentry *debugfs_create_x32(const char *name, mode_t mode,
62 struct dentry *parent, u32 *value);
63 struct dentry *debugfs_create_bool(const char *name, mode_t mode,
64 struct dentry *parent, u32 *value);
66 struct dentry *debugfs_create_blob(const char *name, mode_t mode,
67 struct dentry *parent,
68 struct debugfs_blob_wrapper *blob);
71 #include <linux/err.h>
74 * We do not return NULL from these functions if CONFIG_DEBUG_FS is not enabled
75 * so users have a chance to detect if there was a real error or not. We don't
76 * want to duplicate the design decision mistakes of procfs and devfs again.
79 static inline struct dentry *debugfs_create_file(const char *name, mode_t mode,
80 struct dentry *parent, void *data,
81 const struct file_operations *fops)
83 return ERR_PTR(-ENODEV);
86 static inline struct dentry *debugfs_create_dir(const char *name,
87 struct dentry *parent)
89 return ERR_PTR(-ENODEV);
92 static inline struct dentry *debugfs_create_symlink(const char *name,
93 struct dentry *parent,
96 return ERR_PTR(-ENODEV);
99 static inline void debugfs_remove(struct dentry *dentry)
102 static inline struct dentry *debugfs_rename(struct dentry *old_dir, struct dentry *old_dentry,
103 struct dentry *new_dir, char *new_name)
105 return ERR_PTR(-ENODEV);
108 static inline struct dentry *debugfs_create_u8(const char *name, mode_t mode,
109 struct dentry *parent,
112 return ERR_PTR(-ENODEV);
115 static inline struct dentry *debugfs_create_u16(const char *name, mode_t mode,
116 struct dentry *parent,
119 return ERR_PTR(-ENODEV);
122 static inline struct dentry *debugfs_create_u32(const char *name, mode_t mode,
123 struct dentry *parent,
126 return ERR_PTR(-ENODEV);
129 static inline struct dentry *debugfs_create_u64(const char *name, mode_t mode,
130 struct dentry *parent,
133 return ERR_PTR(-ENODEV);
136 static inline struct dentry *debugfs_create_x8(const char *name, mode_t mode,
137 struct dentry *parent,
140 return ERR_PTR(-ENODEV);
143 static inline struct dentry *debugfs_create_x16(const char *name, mode_t mode,
144 struct dentry *parent,
147 return ERR_PTR(-ENODEV);
150 static inline struct dentry *debugfs_create_x32(const char *name, mode_t mode,
151 struct dentry *parent,
154 return ERR_PTR(-ENODEV);
157 static inline struct dentry *debugfs_create_bool(const char *name, mode_t mode,
158 struct dentry *parent,
161 return ERR_PTR(-ENODEV);
164 static inline struct dentry *debugfs_create_blob(const char *name, mode_t mode,
165 struct dentry *parent,
166 struct debugfs_blob_wrapper *blob)
168 return ERR_PTR(-ENODEV);