33 lines
922 B
C
33 lines
922 B
C
|
// SPDX-License-Identifier: GPL-2.0
|
||
|
|
/*
|
||
|
|
* internal.h - declarations internal to debugfs
|
||
|
|
*
|
||
|
|
* Copyright (C) 2016 Nicolai Stange <nicstange@gmail.com>
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef _DEBUGFS_INTERNAL_H_
|
||
|
|
#define _DEBUGFS_INTERNAL_H_
|
||
|
|
|
||
|
|
struct file_operations;
|
||
|
|
|
||
|
|
/* declared over in file.c */
|
||
|
|
extern const struct file_operations debugfs_noop_file_operations;
|
||
|
|
extern const struct file_operations debugfs_open_proxy_file_operations;
|
||
|
|
extern const struct file_operations debugfs_full_proxy_file_operations;
|
||
|
|
|
||
|
|
struct debugfs_fsdata {
|
||
|
|
const struct file_operations *real_fops;
|
||
|
|
refcount_t active_users;
|
||
|
|
struct completion active_users_drained;
|
||
|
|
};
|
||
|
|
|
||
|
|
/*
|
||
|
|
* A dentry's ->d_fsdata either points to the real fops or to a
|
||
|
|
* dynamically allocated debugfs_fsdata instance.
|
||
|
|
* In order to distinguish between these two cases, a real fops
|
||
|
|
* pointer gets its lowest bit set.
|
||
|
|
*/
|
||
|
|
#define DEBUGFS_FSDATA_IS_REAL_FOPS_BIT BIT(0)
|
||
|
|
|
||
|
|
#endif /* _DEBUGFS_INTERNAL_H_ */
|