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_bool(const char *name
, mode_t mode
,
53 struct dentry
*parent
, u32
*value
);
55 struct dentry
*debugfs_create_blob(const char *name
, mode_t mode
,
56 struct dentry
*parent
,
57 struct debugfs_blob_wrapper
*blob
);
60 #include <linux/err.h>
63 * We do not return NULL from these functions if CONFIG_DEBUG_FS is not enabled
64 * so users have a chance to detect if there was a real error or not. We don't
65 * want to duplicate the design decision mistakes of procfs and devfs again.
68 static inline struct dentry
*debugfs_create_file(const char *name
, mode_t mode
,
69 struct dentry
*parent
, void *data
,
70 const struct file_operations
*fops
)
72 return ERR_PTR(-ENODEV
);
75 static inline struct dentry
*debugfs_create_dir(const char *name
,
76 struct dentry
*parent
)
78 return ERR_PTR(-ENODEV
);
81 static inline struct dentry
*debugfs_create_symlink(const char *name
,
82 struct dentry
*parent
,
85 return ERR_PTR(-ENODEV
);
88 static inline void debugfs_remove(struct dentry
*dentry
)
91 static inline struct dentry
*debugfs_rename(struct dentry
*old_dir
, struct dentry
*old_dentry
,
92 struct dentry
*new_dir
, char *new_name
)
94 return ERR_PTR(-ENODEV
);
97 static inline struct dentry
*debugfs_create_u8(const char *name
, mode_t mode
,
98 struct dentry
*parent
,
101 return ERR_PTR(-ENODEV
);
104 static inline struct dentry
*debugfs_create_u16(const char *name
, mode_t mode
,
105 struct dentry
*parent
,
108 return ERR_PTR(-ENODEV
);
111 static inline struct dentry
*debugfs_create_u32(const char *name
, mode_t mode
,
112 struct dentry
*parent
,
115 return ERR_PTR(-ENODEV
);
118 static inline struct dentry
*debugfs_create_u64(const char *name
, mode_t mode
,
119 struct dentry
*parent
,
122 return ERR_PTR(-ENODEV
);
125 static inline struct dentry
*debugfs_create_bool(const char *name
, mode_t mode
,
126 struct dentry
*parent
,
129 return ERR_PTR(-ENODEV
);
132 static inline struct dentry
*debugfs_create_blob(const char *name
, mode_t mode
,
133 struct dentry
*parent
,
134 struct debugfs_blob_wrapper
*blob
)
136 return ERR_PTR(-ENODEV
);