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1/* SPDX-License-Identifier: GPL-2.0 */
2/*
3 * internal.h - declarations internal to debugfs
4 *
5 * Copyright (C) 2016 Nicolai Stange <nicstange@gmail.com>
6 */
7
8#ifndef _DEBUGFS_INTERNAL_H_
9#define _DEBUGFS_INTERNAL_H_
10#include <linux/list.h>
11
12struct file_operations;
13
14struct debugfs_inode_info {
15 struct inode vfs_inode;
16 union {
17 const void *raw;
18 const struct file_operations *real_fops;
19 const struct debugfs_short_fops *short_fops;
20 debugfs_automount_t automount;
21 };
22 void *aux;
23};
24
25static inline struct debugfs_inode_info *DEBUGFS_I(struct inode *inode)
26{
27 return container_of(inode, struct debugfs_inode_info, vfs_inode);
28}
29
30/* declared over in file.c */
31extern const struct file_operations debugfs_noop_file_operations;
32extern const struct file_operations debugfs_open_proxy_file_operations;
33extern const struct file_operations debugfs_full_proxy_file_operations;
34extern const struct file_operations debugfs_full_short_proxy_file_operations;
35
36struct debugfs_fsdata {
37 const struct file_operations *real_fops;
38 const struct debugfs_short_fops *short_fops;
39 struct {
40 refcount_t active_users;
41 struct completion active_users_drained;
42
43 /* protect cancellations */
44 struct mutex cancellations_mtx;
45 struct list_head cancellations;
46 unsigned int methods;
47 };
48};
49
50enum {
51 HAS_READ = 1,
52 HAS_WRITE = 2,
53 HAS_LSEEK = 4,
54 HAS_POLL = 8,
55 HAS_IOCTL = 16
56};
57
58#endif /* _DEBUGFS_INTERNAL_H_ */