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 */
33 enum 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) */
55 struct 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
62 union 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 */
70 struct 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
83 typedef struct autofs_v5_packet autofs_packet_missing_indirect_t;
84 typedef struct autofs_v5_packet autofs_packet_expire_indirect_t;
85 typedef struct autofs_v5_packet autofs_packet_missing_direct_t;
86 typedef struct autofs_v5_packet autofs_packet_expire_direct_t;
87
88 union 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 */
107
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