Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
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 1
27
28/* Mask for expire behaviour */
29#define AUTOFS_EXP_IMMEDIATE 1
30#define AUTOFS_EXP_LEAVES 2
31
32#define AUTOFS_TYPE_ANY 0x0000
33#define AUTOFS_TYPE_INDIRECT 0x0001
34#define AUTOFS_TYPE_DIRECT 0x0002
35#define AUTOFS_TYPE_OFFSET 0x0004
36
37/* Daemon notification packet types */
38enum autofs_notify {
39 NFY_NONE,
40 NFY_MOUNT,
41 NFY_EXPIRE
42};
43
44/* Kernel protocol version 4 packet types */
45
46/* Expire entry (umount request) */
47#define autofs_ptype_expire_multi 2
48
49/* Kernel protocol version 5 packet types */
50
51/* Indirect mount missing and expire requests. */
52#define autofs_ptype_missing_indirect 3
53#define autofs_ptype_expire_indirect 4
54
55/* Direct mount missing and expire requests */
56#define autofs_ptype_missing_direct 5
57#define autofs_ptype_expire_direct 6
58
59/* v4 multi expire (via pipe) */
60struct autofs_packet_expire_multi {
61 struct autofs_packet_hdr hdr;
62 autofs_wqt_t wait_queue_token;
63 int len;
64 char name[NAME_MAX+1];
65};
66
67union autofs_packet_union {
68 struct autofs_packet_hdr hdr;
69 struct autofs_packet_missing missing;
70 struct autofs_packet_expire expire;
71 struct autofs_packet_expire_multi expire_multi;
72};
73
74/* autofs v5 common packet struct */
75struct autofs_v5_packet {
76 struct autofs_packet_hdr hdr;
77 autofs_wqt_t wait_queue_token;
78 __u32 dev;
79 __u64 ino;
80 __u32 uid;
81 __u32 gid;
82 __u32 pid;
83 __u32 tgid;
84 __u32 len;
85 char name[NAME_MAX+1];
86};
87
88typedef struct autofs_v5_packet autofs_packet_missing_indirect_t;
89typedef struct autofs_v5_packet autofs_packet_expire_indirect_t;
90typedef struct autofs_v5_packet autofs_packet_missing_direct_t;
91typedef struct autofs_v5_packet autofs_packet_expire_direct_t;
92
93union autofs_v5_packet_union {
94 struct autofs_packet_hdr hdr;
95 struct autofs_v5_packet v5_packet;
96 autofs_packet_missing_indirect_t missing_indirect;
97 autofs_packet_expire_indirect_t expire_indirect;
98 autofs_packet_missing_direct_t missing_direct;
99 autofs_packet_expire_direct_t expire_direct;
100};
101
102#define AUTOFS_IOC_EXPIRE_MULTI _IOW(0x93,0x66,int)
103#define AUTOFS_IOC_EXPIRE_INDIRECT AUTOFS_IOC_EXPIRE_MULTI
104#define AUTOFS_IOC_EXPIRE_DIRECT AUTOFS_IOC_EXPIRE_MULTI
105#define AUTOFS_IOC_PROTOSUBVER _IOR(0x93,0x67,int)
106#define AUTOFS_IOC_ASKUMOUNT _IOR(0x93,0x70,int)
107
108
109#endif /* _LINUX_AUTO_FS4_H */