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
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
|
/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */
/*
* Copyright 1999-2000 Jeremy Fitzhardinge <jeremy@goop.org>
*
* This file is part of the Linux kernel and is made available under
* the terms of the GNU General Public License, version 2, or at your
* option, any later version, incorporated herein by reference.
*/
#ifndef _LINUX_AUTO_FS4_H
#define _LINUX_AUTO_FS4_H
/* Include common v3 definitions */
#include <linux/types.h>
#include <linux/auto_fs.h>
/* autofs v4 definitions */
#undef AUTOFS_PROTO_VERSION
#undef AUTOFS_MIN_PROTO_VERSION
#undef AUTOFS_MAX_PROTO_VERSION
#define AUTOFS_PROTO_VERSION 5
#define AUTOFS_MIN_PROTO_VERSION 3
#define AUTOFS_MAX_PROTO_VERSION 5
#define AUTOFS_PROTO_SUBVERSION 2
/* Mask for expire behaviour */
#define AUTOFS_EXP_IMMEDIATE 1
#define AUTOFS_EXP_LEAVES 2
#define AUTOFS_TYPE_ANY 0U
#define AUTOFS_TYPE_INDIRECT 1U
#define AUTOFS_TYPE_DIRECT 2U
#define AUTOFS_TYPE_OFFSET 4U
static inline void set_autofs_type_indirect(unsigned int *type)
{
*type = AUTOFS_TYPE_INDIRECT;
}
static inline unsigned int autofs_type_indirect(unsigned int type)
{
return (type == AUTOFS_TYPE_INDIRECT);
}
static inline void set_autofs_type_direct(unsigned int *type)
{
*type = AUTOFS_TYPE_DIRECT;
}
static inline unsigned int autofs_type_direct(unsigned int type)
{
return (type == AUTOFS_TYPE_DIRECT);
}
static inline void set_autofs_type_offset(unsigned int *type)
{
*type = AUTOFS_TYPE_OFFSET;
}
static inline unsigned int autofs_type_offset(unsigned int type)
{
return (type == AUTOFS_TYPE_OFFSET);
}
static inline unsigned int autofs_type_trigger(unsigned int type)
{
return (type == AUTOFS_TYPE_DIRECT || type == AUTOFS_TYPE_OFFSET);
}
/*
* This isn't really a type as we use it to say "no type set" to
* indicate we want to search for "any" mount in the
* autofs_dev_ioctl_ismountpoint() device ioctl function.
*/
static inline void set_autofs_type_any(unsigned int *type)
{
*type = AUTOFS_TYPE_ANY;
}
static inline unsigned int autofs_type_any(unsigned int type)
{
return (type == AUTOFS_TYPE_ANY);
}
/* Daemon notification packet types */
enum autofs_notify {
NFY_NONE,
NFY_MOUNT,
NFY_EXPIRE
};
/* Kernel protocol version 4 packet types */
/* Expire entry (umount request) */
#define autofs_ptype_expire_multi 2
/* Kernel protocol version 5 packet types */
/* Indirect mount missing and expire requests. */
#define autofs_ptype_missing_indirect 3
#define autofs_ptype_expire_indirect 4
/* Direct mount missing and expire requests */
#define autofs_ptype_missing_direct 5
#define autofs_ptype_expire_direct 6
/* v4 multi expire (via pipe) */
struct autofs_packet_expire_multi {
struct autofs_packet_hdr hdr;
autofs_wqt_t wait_queue_token;
int len;
char name[NAME_MAX+1];
};
union autofs_packet_union {
struct autofs_packet_hdr hdr;
struct autofs_packet_missing missing;
struct autofs_packet_expire expire;
struct autofs_packet_expire_multi expire_multi;
};
/* autofs v5 common packet struct */
struct autofs_v5_packet {
struct autofs_packet_hdr hdr;
autofs_wqt_t wait_queue_token;
__u32 dev;
__u64 ino;
__u32 uid;
__u32 gid;
__u32 pid;
__u32 tgid;
__u32 len;
char name[NAME_MAX+1];
};
typedef struct autofs_v5_packet autofs_packet_missing_indirect_t;
typedef struct autofs_v5_packet autofs_packet_expire_indirect_t;
typedef struct autofs_v5_packet autofs_packet_missing_direct_t;
typedef struct autofs_v5_packet autofs_packet_expire_direct_t;
union autofs_v5_packet_union {
struct autofs_packet_hdr hdr;
struct autofs_v5_packet v5_packet;
autofs_packet_missing_indirect_t missing_indirect;
autofs_packet_expire_indirect_t expire_indirect;
autofs_packet_missing_direct_t missing_direct;
autofs_packet_expire_direct_t expire_direct;
};
enum {
AUTOFS_IOC_EXPIRE_MULTI_CMD = 0x66, /* AUTOFS_IOC_EXPIRE_CMD + 1 */
AUTOFS_IOC_PROTOSUBVER_CMD,
AUTOFS_IOC_ASKUMOUNT_CMD = 0x70, /* AUTOFS_DEV_IOCTL_VERSION_CMD - 1 */
};
#define AUTOFS_IOC_EXPIRE_MULTI _IOW(AUTOFS_IOCTL, AUTOFS_IOC_EXPIRE_MULTI_CMD, int)
#define AUTOFS_IOC_PROTOSUBVER _IOR(AUTOFS_IOCTL, AUTOFS_IOC_PROTOSUBVER_CMD, int)
#define AUTOFS_IOC_ASKUMOUNT _IOR(AUTOFS_IOCTL, AUTOFS_IOC_ASKUMOUNT_CMD, int)
#endif /* _LINUX_AUTO_FS4_H */
|
