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1/* -*- c -*-
2 * linux/include/linux/auto_fs4.h
3 *
4 * Copyright 1999-2000 Jeremy Fitzhardinge <jeremy@goop.org>
5 *
6 * This file is part of the Linux kernel and is made available under
7 * the terms of the GNU General Public License, version 2, or at your
8 * option, any later version, incorporated herein by reference.
9 */
10
11#ifndef _LINUX_AUTO_FS4_H
12#define _LINUX_AUTO_FS4_H
13
14/* Include common v3 definitions */
15#include <linux/auto_fs.h>
16
17/* autofs v4 definitions */
18#undef AUTOFS_PROTO_VERSION
19#undef AUTOFS_MIN_PROTO_VERSION
20#undef AUTOFS_MAX_PROTO_VERSION
21
22#define AUTOFS_PROTO_VERSION 5
23#define AUTOFS_MIN_PROTO_VERSION 3
24#define AUTOFS_MAX_PROTO_VERSION 5
25
26#define AUTOFS_PROTO_SUBVERSION 0
27
28/* Mask for expire behaviour */
29#define AUTOFS_EXP_IMMEDIATE 1
30#define AUTOFS_EXP_LEAVES 2
31
32/* Daemon notification packet types */
33enum autofs_notify {
34 NFY_NONE,
35 NFY_MOUNT,
36 NFY_EXPIRE
37};
38
39/* Kernel protocol version 4 packet types */
40
41/* Expire entry (umount request) */
42#define autofs_ptype_expire_multi 2
43
44/* Kernel protocol version 5 packet types */
45
46/* Indirect mount missing and expire requests. */
47#define autofs_ptype_missing_indirect 3
48#define autofs_ptype_expire_indirect 4
49
50/* Direct mount missing and expire requests */
51#define autofs_ptype_missing_direct 5
52#define autofs_ptype_expire_direct 6
53
54/* v4 multi expire (via pipe) */
55struct autofs_packet_expire_multi {
56 struct autofs_packet_hdr hdr;
57 autofs_wqt_t wait_queue_token;
58 int len;
59 char name[NAME_MAX+1];
60};
61
62union autofs_packet_union {
63 struct autofs_packet_hdr hdr;
64 struct autofs_packet_missing missing;
65 struct autofs_packet_expire expire;
66 struct autofs_packet_expire_multi expire_multi;
67};
68
69/* autofs v5 common packet struct */
70struct autofs_v5_packet {
71 struct autofs_packet_hdr hdr;
72 autofs_wqt_t wait_queue_token;
73 __u32 dev;
74 __u64 ino;
75 __u32 uid;
76 __u32 gid;
77 __u32 pid;
78 __u32 tgid;
79 __u32 len;
80 char name[NAME_MAX+1];
81};
82
83typedef struct autofs_v5_packet autofs_packet_missing_indirect_t;
84typedef struct autofs_v5_packet autofs_packet_expire_indirect_t;
85typedef struct autofs_v5_packet autofs_packet_missing_direct_t;
86typedef struct autofs_v5_packet autofs_packet_expire_direct_t;
87
88union autofs_v5_packet_union {
89 struct autofs_packet_hdr hdr;
90 struct autofs_v5_packet v5_packet;
91 autofs_packet_missing_indirect_t missing_indirect;
92 autofs_packet_expire_indirect_t expire_indirect;
93 autofs_packet_missing_direct_t missing_direct;
94 autofs_packet_expire_direct_t expire_direct;
95};
96
97#define AUTOFS_IOC_EXPIRE_MULTI _IOW(0x93,0x66,int)
98#define AUTOFS_IOC_EXPIRE_INDIRECT AUTOFS_IOC_EXPIRE_MULTI
99#define AUTOFS_IOC_EXPIRE_DIRECT AUTOFS_IOC_EXPIRE_MULTI
100#define AUTOFS_IOC_PROTOSUBVER _IOR(0x93,0x67,int)
101#define AUTOFS_IOC_ASKREGHOST _IOR(0x93,0x68,int)
102#define AUTOFS_IOC_TOGGLEREGHOST _IOR(0x93,0x69,int)
103#define AUTOFS_IOC_ASKUMOUNT _IOR(0x93,0x70,int)
104
105
106#endif /* _LINUX_AUTO_FS4_H */