/* *  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/filesystems 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;}; extern struct dentry *arch_debugfs_dir; #if defined(CONFIG_DEBUG_FS) /* declared over in file.c */extern const struct file_operations debugfs_file_operations;extern const struct inode_operations debugfs_link_operations; 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); struct dentry *debugfs_create_symlink(const char *name, struct dentry *parent,				      const char *dest); void debugfs_remove(struct dentry *dentry);void debugfs_remove_recursive(struct dentry *dentry); struct dentry *debugfs_rename(struct dentry *old_dir, struct dentry *old_dentry,                struct dentry *new_dir, const char *new_name); 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_u64(const char *name, mode_t mode,				  struct dentry *parent, u64 *value);struct dentry *debugfs_create_x8(const char *name, mode_t mode,				 struct dentry *parent, u8 *value);struct dentry *debugfs_create_x16(const char *name, mode_t mode,				  struct dentry *parent, u16 *value);struct dentry *debugfs_create_x32(const char *name, mode_t mode,				  struct dentry *parent, u32 *value);struct dentry *debugfs_create_size_t(const char *name, mode_t mode,				     struct dentry *parent, size_t *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); bool debugfs_initialized(void); #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 struct dentry *debugfs_create_symlink(const char *name,						    struct dentry *parent,						    const char *dest){	return ERR_PTR(-ENODEV);} static inline void debugfs_remove(struct dentry *dentry){ } static inline void debugfs_remove_recursive(struct dentry *dentry){ } static inline struct dentry *debugfs_rename(struct dentry *old_dir, struct dentry *old_dentry,                struct dentry *new_dir, char *new_name){	return ERR_PTR(-ENODEV);} 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_u64(const char *name, mode_t mode,						struct dentry *parent,						u64 *value){	return ERR_PTR(-ENODEV);} static inline struct dentry *debugfs_create_x8(const char *name, mode_t mode,					       struct dentry *parent,					       u8 *value){	return ERR_PTR(-ENODEV);} static inline struct dentry *debugfs_create_x16(const char *name, mode_t mode,						struct dentry *parent,						u16 *value){	return ERR_PTR(-ENODEV);} static inline struct dentry *debugfs_create_x32(const char *name, mode_t mode,						struct dentry *parent,						u32 *value){	return ERR_PTR(-ENODEV);} static inline struct dentry *debugfs_create_size_t(const char *name, mode_t mode,				     struct dentry *parent,				     size_t *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);} static inline bool debugfs_initialized(void){	return false;} #endif #endif