projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 9fd4dcec NS |
1 | /* |
| 2 | * internal.h - declarations internal to debugfs | |
| 3 | * | |
| 4 | * Copyright (C) 2016 Nicolai Stange <nicstange@gmail.com> | |
| 5 | * | |
| 6 | * This program is free software; you can redistribute it and/or | |
| 7 | * modify it under the terms of the GNU General Public License version | |
| 8 | * 2 as published by the Free Software Foundation. | |
| 9 | * | |
| 10 | */ | |
| 11 | ||
| 12 | #ifndef _DEBUGFS_INTERNAL_H_ | |
| 13 | #define _DEBUGFS_INTERNAL_H_ | |
| 14 | ||
| 15 | struct file_operations; | |
| 9fd4dcec NS |
16 | |
| 17 | /* declared over in file.c */ | |
| 18 | extern const struct file_operations debugfs_noop_file_operations; | |
| 19 | extern const struct file_operations debugfs_open_proxy_file_operations; | |
| 49d200de | 20 | extern const struct file_operations debugfs_full_proxy_file_operations; |
| 9fd4dcec | 21 | |
| 7c8d4698 NS |
22 | struct debugfs_fsdata { |
| 23 | const struct file_operations *real_fops; | |
| e9117a5a NS |
24 | refcount_t active_users; |
| 25 | struct completion active_users_drained; | |
| 7c8d4698 NS |
26 | }; |
| 27 | ||
| 7d39bc50 NS |
28 | /* |
| 29 | * A dentry's ->d_fsdata either points to the real fops or to a | |
| 30 | * dynamically allocated debugfs_fsdata instance. | |
| 31 | * In order to distinguish between these two cases, a real fops | |
| 32 | * pointer gets its lowest bit set. | |
| 33 | */ | |
| 34 | #define DEBUGFS_FSDATA_IS_REAL_FOPS_BIT BIT(0) | |
| 35 | ||
| 9fd4dcec | 36 | #endif /* _DEBUGFS_INTERNAL_H_ */ |