projects / mirror_ubuntu-hirsute-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| 69b07ee3 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| 9fd4dcec NS |
2 | /* |
| 3 | * internal.h - declarations internal to debugfs | |
| 4 | * | |
| 5 | * Copyright (C) 2016 Nicolai Stange <nicstange@gmail.com> | |
| 9fd4dcec NS |
6 | */ |
| 7 | ||
| 8 | #ifndef _DEBUGFS_INTERNAL_H_ | |
| 9 | #define _DEBUGFS_INTERNAL_H_ | |
| 10 | ||
| 11 | struct file_operations; | |
| 9fd4dcec NS |
12 | |
| 13 | /* declared over in file.c */ | |
| 14 | extern const struct file_operations debugfs_noop_file_operations; | |
| 15 | extern const struct file_operations debugfs_open_proxy_file_operations; | |
| 49d200de | 16 | extern const struct file_operations debugfs_full_proxy_file_operations; |
| 9fd4dcec | 17 | |
| 7c8d4698 NS |
18 | struct debugfs_fsdata { |
| 19 | const struct file_operations *real_fops; | |
| e9117a5a NS |
20 | refcount_t active_users; |
| 21 | struct completion active_users_drained; | |
| 7c8d4698 NS |
22 | }; |
| 23 | ||
| 7d39bc50 NS |
24 | /* |
| 25 | * A dentry's ->d_fsdata either points to the real fops or to a | |
| 26 | * dynamically allocated debugfs_fsdata instance. | |
| 27 | * In order to distinguish between these two cases, a real fops | |
| 28 | * pointer gets its lowest bit set. | |
| 29 | */ | |
| 30 | #define DEBUGFS_FSDATA_IS_REAL_FOPS_BIT BIT(0) | |
| 31 | ||
| a24c6f7b PE |
32 | /* Access BITS */ |
| 33 | #define DEBUGFS_ALLOW_API BIT(0) | |
| 34 | #define DEBUGFS_ALLOW_MOUNT BIT(1) | |
| 35 | ||
| 36 | #ifdef CONFIG_DEBUG_FS_ALLOW_ALL | |
| 37 | #define DEFAULT_DEBUGFS_ALLOW_BITS (DEBUGFS_ALLOW_MOUNT | DEBUGFS_ALLOW_API) | |
| 38 | #endif | |
| 39 | #ifdef CONFIG_DEBUG_FS_DISALLOW_MOUNT | |
| 40 | #define DEFAULT_DEBUGFS_ALLOW_BITS (DEBUGFS_ALLOW_API) | |
| 41 | #endif | |
| 42 | #ifdef CONFIG_DEBUG_FS_ALLOW_NONE | |
| 43 | #define DEFAULT_DEBUGFS_ALLOW_BITS (0) | |
| 44 | #endif | |
| 45 | ||
| 9fd4dcec | 46 | #endif /* _DEBUGFS_INTERNAL_H_ */ |