/* * debugfs.h - a tiny little debug file system * * Copyright (C) 2004 Greg Kroah-Hartman <greg@kroah.com> * Copyright (C) 2004 IBM Inc. * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License version * 2 as published by the Free Software Foundation. * * debugfs is for people to use instead of /proc or /sys. * See Documentation/DocBook/kernel-api for more details. */ #ifndef _DEBUGFS_H_#define _DEBUGFS_H_ #include <linux/fs.h> #include <linux/types.h> struct file_operations; struct debugfs_blob_wrapper { void *data; unsigned long size;}; #if defined(CONFIG_DEBUG_FS)struct dentry *debugfs_create_file(const char *name, mode_t mode, struct dentry *parent, void *data, const struct file_operations *fops); struct dentry *debugfs_create_dir(const char *name, struct dentry *parent); void debugfs_remove(struct dentry *dentry); struct dentry *debugfs_create_u8(const char *name, mode_t mode, struct dentry *parent, u8 *value);struct dentry *debugfs_create_u16(const char *name, mode_t mode, struct dentry *parent, u16 *value);struct dentry *debugfs_create_u32(const char *name, mode_t mode, struct dentry *parent, u32 *value);struct dentry *debugfs_create_bool(const char *name, mode_t mode, struct dentry *parent, u32 *value); struct dentry *debugfs_create_blob(const char *name, mode_t mode, struct dentry *parent, struct debugfs_blob_wrapper *blob);#else #include <linux/err.h> /* * We do not return NULL from these functions if CONFIG_DEBUG_FS is not enabled * so users have a chance to detect if there was a real error or not. We don't * want to duplicate the design decision mistakes of procfs and devfs again. */ static inline struct dentry *debugfs_create_file(const char *name, mode_t mode, struct dentry *parent, void *data, const struct file_operations *fops){ return ERR_PTR(-ENODEV);} static inline struct dentry *debugfs_create_dir(const char *name, struct dentry *parent){ return ERR_PTR(-ENODEV);} static inline void debugfs_remove(struct dentry *dentry){ } static inline struct dentry *debugfs_create_u8(const char *name, mode_t mode, struct dentry *parent, u8 *value){ return ERR_PTR(-ENODEV);} static inline struct dentry *debugfs_create_u16(const char *name, mode_t mode, struct dentry *parent, u16 *value){ return ERR_PTR(-ENODEV);} static inline struct dentry *debugfs_create_u32(const char *name, mode_t mode, struct dentry *parent, u32 *value){ return ERR_PTR(-ENODEV);} static inline struct dentry *debugfs_create_bool(const char *name, mode_t mode, struct dentry *parent, u32 *value){ return ERR_PTR(-ENODEV);} static inline struct dentry *debugfs_create_blob(const char *name, mode_t mode, struct dentry *parent, struct debugfs_blob_wrapper *blob){ return ERR_PTR(-ENODEV);} #endif #endif
/*
* debugfs.h - a tiny little debug file system
*
* Copyright (C) 2004 Greg Kroah-Hartman <greg@kroah.com>
* Copyright (C) 2004 IBM Inc.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License version
* 2 as published by the Free Software Foundation.
*
* debugfs is for people to use instead of /proc or /sys.
* See Documentation/DocBook/kernel-api for more details.
*/
#ifndef _DEBUGFS_H_
#define _DEBUGFS_H_
#include <linux/fs.h>
#include <linux/types.h>
struct file_operations;
struct debugfs_blob_wrapper {
void *data;
unsigned long size;
};
#if defined(CONFIG_DEBUG_FS)
struct dentry *debugfs_create_file(const char *name, mode_t mode,
struct dentry *parent, void *data,
const struct file_operations *fops);
struct dentry *debugfs_create_dir(const char *name, struct dentry *parent);
void debugfs_remove(struct dentry *dentry);
struct dentry *debugfs_create_u8(const char *name, mode_t mode,
struct dentry *parent, u8 *value);
struct dentry *debugfs_create_u16(const char *name, mode_t mode,
struct dentry *parent, u16 *value);
struct dentry *debugfs_create_u32(const char *name, mode_t mode,
struct dentry *parent, u32 *value);
struct dentry *debugfs_create_bool(const char *name, mode_t mode,
struct dentry *parent, u32 *value);
struct dentry *debugfs_create_blob(const char *name, mode_t mode,
struct dentry *parent,
struct debugfs_blob_wrapper *blob);
#else
#include <linux/err.h>
/*
* We do not return NULL from these functions if CONFIG_DEBUG_FS is not enabled
* so users have a chance to detect if there was a real error or not. We don't
* want to duplicate the design decision mistakes of procfs and devfs again.
*/
static inline struct dentry *debugfs_create_file(const char *name, mode_t mode,
struct dentry *parent, void *data,
const struct file_operations *fops)
{
return ERR_PTR(-ENODEV);
}
static inline struct dentry *debugfs_create_dir(const char *name,
struct dentry *parent)
{
return ERR_PTR(-ENODEV);
}
static inline void debugfs_remove(struct dentry *dentry)
{ }
static inline struct dentry *debugfs_create_u8(const char *name, mode_t mode,
struct dentry *parent,
u8 *value)
{
return ERR_PTR(-ENODEV);
}
static inline struct dentry *debugfs_create_u16(const char *name, mode_t mode,
struct dentry *parent,
u16 *value)
{
return ERR_PTR(-ENODEV);
}
static inline struct dentry *debugfs_create_u32(const char *name, mode_t mode,
struct dentry *parent,
u32 *value)
{
return ERR_PTR(-ENODEV);
}
static inline struct dentry *debugfs_create_bool(const char *name, mode_t mode,
struct dentry *parent,
u32 *value)
{
return ERR_PTR(-ENODEV);
}
static inline struct dentry *debugfs_create_blob(const char *name, mode_t mode,
struct dentry *parent,
struct debugfs_blob_wrapper *blob)
{
return ERR_PTR(-ENODEV);
}
#endif
#endif