| // 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_ */ |