2 * linux/include/linux/auto_fs4.h
4 * Copyright 1999-2000 Jeremy Fitzhardinge <jeremy@goop.org>
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.
11 #ifndef _LINUX_AUTO_FS4_H
12 #define _LINUX_AUTO_FS4_H
14 /* Include common v3 definitions */
15 #include <linux/auto_fs.h>
17 /* autofs v4 definitions */
18 #undef AUTOFS_PROTO_VERSION
19 #undef AUTOFS_MIN_PROTO_VERSION
20 #undef AUTOFS_MAX_PROTO_VERSION
22 #define AUTOFS_PROTO_VERSION 5
23 #define AUTOFS_MIN_PROTO_VERSION 3
24 #define AUTOFS_MAX_PROTO_VERSION 5
26 #define AUTOFS_PROTO_SUBVERSION 1
28 /* Mask for expire behaviour */
29 #define AUTOFS_EXP_IMMEDIATE 1
30 #define AUTOFS_EXP_LEAVES 2
32 #define AUTOFS_TYPE_ANY 0x0000
33 #define AUTOFS_TYPE_INDIRECT 0x0001
34 #define AUTOFS_TYPE_DIRECT 0x0002
35 #define AUTOFS_TYPE_OFFSET 0x0004
37 /* Daemon notification packet types */
44 /* Kernel protocol version 4 packet types */
46 /* Expire entry (umount request) */
47 #define autofs_ptype_expire_multi 2
49 /* Kernel protocol version 5 packet types */
51 /* Indirect mount missing and expire requests. */
52 #define autofs_ptype_missing_indirect 3
53 #define autofs_ptype_expire_indirect 4
55 /* Direct mount missing and expire requests */
56 #define autofs_ptype_missing_direct 5
57 #define autofs_ptype_expire_direct 6
59 /* v4 multi expire (via pipe) */
60 struct autofs_packet_expire_multi {
61 struct autofs_packet_hdr hdr;
62 autofs_wqt_t wait_queue_token;
64 char name[NAME_MAX+1];
67 union 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;
74 /* autofs v5 common packet struct */
75 struct autofs_v5_packet {
76 struct autofs_packet_hdr hdr;
77 autofs_wqt_t wait_queue_token;
85 char name[NAME_MAX+1];
88 typedef struct autofs_v5_packet autofs_packet_missing_indirect_t;
89 typedef struct autofs_v5_packet autofs_packet_expire_indirect_t;
90 typedef struct autofs_v5_packet autofs_packet_missing_direct_t;
91 typedef struct autofs_v5_packet autofs_packet_expire_direct_t;
93 union 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;
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)
109 #endif /* _LINUX_AUTO_FS4_H */