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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/* -*- 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
Ian Kent5c0a32f2006-03-27 01:14:55 -080022#define AUTOFS_PROTO_VERSION 5
Linus Torvalds1da177e2005-04-16 15:20:36 -070023#define AUTOFS_MIN_PROTO_VERSION 3
Ian Kent5c0a32f2006-03-27 01:14:55 -080024#define AUTOFS_MAX_PROTO_VERSION 5
Linus Torvalds1da177e2005-04-16 15:20:36 -070025
Ian Kent5c0a32f2006-03-27 01:14:55 -080026#define AUTOFS_PROTO_SUBVERSION 0
Linus Torvalds1da177e2005-04-16 15:20:36 -070027
28/* Mask for expire behaviour */
29#define AUTOFS_EXP_IMMEDIATE 1
30#define AUTOFS_EXP_LEAVES 2
31
Ian Kent5c0a32f2006-03-27 01:14:55 -080032/* 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
Linus Torvalds1da177e2005-04-16 15:20:36 -070053
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
Ian Kente8514472007-02-20 13:58:09 -080062union 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
Ian Kent5c0a32f2006-03-27 01:14:55 -080069/* 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
Ian Kente8514472007-02-20 13:58:09 -080088union autofs_v5_packet_union {
Linus Torvalds1da177e2005-04-16 15:20:36 -070089 struct autofs_packet_hdr hdr;
Ian Kent5c0a32f2006-03-27 01:14:55 -080090 struct autofs_v5_packet v5_packet;
Ian Kente8514472007-02-20 13:58:09 -080091 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;
Linus Torvalds1da177e2005-04-16 15:20:36 -070095};
96
97#define AUTOFS_IOC_EXPIRE_MULTI _IOW(0x93,0x66,int)
Ian Kent5c0a32f2006-03-27 01:14:55 -080098#define AUTOFS_IOC_EXPIRE_INDIRECT AUTOFS_IOC_EXPIRE_MULTI
99#define AUTOFS_IOC_EXPIRE_DIRECT AUTOFS_IOC_EXPIRE_MULTI
Linus Torvalds1da177e2005-04-16 15:20:36 -0700100#define AUTOFS_IOC_PROTOSUBVER _IOR(0x93,0x67,int)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700101#define AUTOFS_IOC_ASKUMOUNT _IOR(0x93,0x70,int)
102
103
104#endif /* _LINUX_AUTO_FS4_H */