blob: 93483fe844257c4bcae05641d4eb6b6855a77217 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
|
/* 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_
#include <linux/list.h>
struct file_operations;
struct debugfs_inode_info {
struct inode vfs_inode;
union {
const void *raw;
const struct file_operations *real_fops;
const struct debugfs_short_fops *short_fops;
debugfs_automount_t automount;
};
const void *aux;
};
static inline struct debugfs_inode_info *DEBUGFS_I(struct inode *inode)
{
return container_of(inode, struct debugfs_inode_info, vfs_inode);
}
/* 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;
extern const struct file_operations debugfs_full_short_proxy_file_operations;
struct debugfs_fsdata {
const struct file_operations *real_fops;
const struct debugfs_short_fops *short_fops;
struct {
refcount_t active_users;
struct completion active_users_drained;
/* protect cancellations */
struct mutex cancellations_mtx;
struct list_head cancellations;
unsigned int methods;
};
};
enum {
HAS_READ = 1,
HAS_WRITE = 2,
HAS_LSEEK = 4,
HAS_POLL = 8,
HAS_IOCTL = 16
};
#define DEBUGFS_ALLOW_API BIT(0)
#define DEBUGFS_ALLOW_MOUNT BIT(1)
#ifdef CONFIG_DEBUG_FS_ALLOW_ALL
#define DEFAULT_DEBUGFS_ALLOW_BITS (DEBUGFS_ALLOW_MOUNT | DEBUGFS_ALLOW_API)
#endif
#ifdef CONFIG_DEBUG_FS_DISALLOW_MOUNT
#define DEFAULT_DEBUGFS_ALLOW_BITS (DEBUGFS_ALLOW_API)
#endif
#ifdef CONFIG_DEBUG_FS_ALLOW_NONE
#define DEFAULT_DEBUGFS_ALLOW_BITS (0)
#endif
#endif /* _DEBUGFS_INTERNAL_H_ */
|
