Commit | Line | Data |
---|---|---|
e9a7c2f1 | 1 | /* |
1da177e4 LT |
2 | * Copyright 1999-2000 Jeremy Fitzhardinge <jeremy@goop.org> |
3 | * | |
4 | * This file is part of the Linux kernel and is made available under | |
5 | * the terms of the GNU General Public License, version 2, or at your | |
6 | * option, any later version, incorporated herein by reference. | |
7 | */ | |
8 | ||
9 | #ifndef _LINUX_AUTO_FS4_H | |
10 | #define _LINUX_AUTO_FS4_H | |
11 | ||
12 | /* Include common v3 definitions */ | |
5d461bfe | 13 | #include <linux/types.h> |
1da177e4 LT |
14 | #include <linux/auto_fs.h> |
15 | ||
16 | /* autofs v4 definitions */ | |
17 | #undef AUTOFS_PROTO_VERSION | |
18 | #undef AUTOFS_MIN_PROTO_VERSION | |
19 | #undef AUTOFS_MAX_PROTO_VERSION | |
20 | ||
5c0a32fc | 21 | #define AUTOFS_PROTO_VERSION 5 |
1da177e4 | 22 | #define AUTOFS_MIN_PROTO_VERSION 3 |
5c0a32fc | 23 | #define AUTOFS_MAX_PROTO_VERSION 5 |
1da177e4 | 24 | |
1972580b | 25 | #define AUTOFS_PROTO_SUBVERSION 2 |
1da177e4 LT |
26 | |
27 | /* Mask for expire behaviour */ | |
28 | #define AUTOFS_EXP_IMMEDIATE 1 | |
29 | #define AUTOFS_EXP_LEAVES 2 | |
30 | ||
a92daf6b IK |
31 | #define AUTOFS_TYPE_ANY 0U |
32 | #define AUTOFS_TYPE_INDIRECT 1U | |
33 | #define AUTOFS_TYPE_DIRECT 2U | |
34 | #define AUTOFS_TYPE_OFFSET 4U | |
35 | ||
36 | static inline void set_autofs_type_indirect(unsigned int *type) | |
37 | { | |
38 | *type = AUTOFS_TYPE_INDIRECT; | |
a92daf6b IK |
39 | } |
40 | ||
41 | static inline unsigned int autofs_type_indirect(unsigned int type) | |
42 | { | |
43 | return (type == AUTOFS_TYPE_INDIRECT); | |
44 | } | |
45 | ||
46 | static inline void set_autofs_type_direct(unsigned int *type) | |
47 | { | |
48 | *type = AUTOFS_TYPE_DIRECT; | |
a92daf6b IK |
49 | } |
50 | ||
51 | static inline unsigned int autofs_type_direct(unsigned int type) | |
52 | { | |
53 | return (type == AUTOFS_TYPE_DIRECT); | |
54 | } | |
55 | ||
56 | static inline void set_autofs_type_offset(unsigned int *type) | |
57 | { | |
58 | *type = AUTOFS_TYPE_OFFSET; | |
a92daf6b IK |
59 | } |
60 | ||
61 | static inline unsigned int autofs_type_offset(unsigned int type) | |
62 | { | |
63 | return (type == AUTOFS_TYPE_OFFSET); | |
64 | } | |
65 | ||
66 | static inline unsigned int autofs_type_trigger(unsigned int type) | |
67 | { | |
68 | return (type == AUTOFS_TYPE_DIRECT || type == AUTOFS_TYPE_OFFSET); | |
69 | } | |
70 | ||
71 | /* | |
72 | * This isn't really a type as we use it to say "no type set" to | |
73 | * indicate we want to search for "any" mount in the | |
74 | * autofs_dev_ioctl_ismountpoint() device ioctl function. | |
75 | */ | |
76 | static inline void set_autofs_type_any(unsigned int *type) | |
77 | { | |
78 | *type = AUTOFS_TYPE_ANY; | |
a92daf6b IK |
79 | } |
80 | ||
81 | static inline unsigned int autofs_type_any(unsigned int type) | |
82 | { | |
83 | return (type == AUTOFS_TYPE_ANY); | |
84 | } | |
bb979d7f | 85 | |
5c0a32fc IK |
86 | /* Daemon notification packet types */ |
87 | enum autofs_notify { | |
88 | NFY_NONE, | |
89 | NFY_MOUNT, | |
90 | NFY_EXPIRE | |
91 | }; | |
92 | ||
93 | /* Kernel protocol version 4 packet types */ | |
94 | ||
95 | /* Expire entry (umount request) */ | |
96 | #define autofs_ptype_expire_multi 2 | |
97 | ||
98 | /* Kernel protocol version 5 packet types */ | |
99 | ||
100 | /* Indirect mount missing and expire requests. */ | |
101 | #define autofs_ptype_missing_indirect 3 | |
102 | #define autofs_ptype_expire_indirect 4 | |
103 | ||
104 | /* Direct mount missing and expire requests */ | |
105 | #define autofs_ptype_missing_direct 5 | |
106 | #define autofs_ptype_expire_direct 6 | |
1da177e4 LT |
107 | |
108 | /* v4 multi expire (via pipe) */ | |
109 | struct autofs_packet_expire_multi { | |
110 | struct autofs_packet_hdr hdr; | |
111 | autofs_wqt_t wait_queue_token; | |
112 | int len; | |
113 | char name[NAME_MAX+1]; | |
114 | }; | |
115 | ||
e8514478 IK |
116 | union autofs_packet_union { |
117 | struct autofs_packet_hdr hdr; | |
118 | struct autofs_packet_missing missing; | |
119 | struct autofs_packet_expire expire; | |
120 | struct autofs_packet_expire_multi expire_multi; | |
121 | }; | |
122 | ||
5c0a32fc IK |
123 | /* autofs v5 common packet struct */ |
124 | struct autofs_v5_packet { | |
125 | struct autofs_packet_hdr hdr; | |
126 | autofs_wqt_t wait_queue_token; | |
127 | __u32 dev; | |
128 | __u64 ino; | |
129 | __u32 uid; | |
130 | __u32 gid; | |
131 | __u32 pid; | |
132 | __u32 tgid; | |
133 | __u32 len; | |
134 | char name[NAME_MAX+1]; | |
135 | }; | |
136 | ||
137 | typedef struct autofs_v5_packet autofs_packet_missing_indirect_t; | |
138 | typedef struct autofs_v5_packet autofs_packet_expire_indirect_t; | |
139 | typedef struct autofs_v5_packet autofs_packet_missing_direct_t; | |
140 | typedef struct autofs_v5_packet autofs_packet_expire_direct_t; | |
141 | ||
e8514478 | 142 | union autofs_v5_packet_union { |
1da177e4 | 143 | struct autofs_packet_hdr hdr; |
5c0a32fc | 144 | struct autofs_v5_packet v5_packet; |
e8514478 IK |
145 | autofs_packet_missing_indirect_t missing_indirect; |
146 | autofs_packet_expire_indirect_t expire_indirect; | |
147 | autofs_packet_missing_direct_t missing_direct; | |
148 | autofs_packet_expire_direct_t expire_direct; | |
1da177e4 LT |
149 | }; |
150 | ||
e9a7c2f1 | 151 | #define AUTOFS_IOC_EXPIRE_MULTI _IOW(0x93, 0x66, int) |
5c0a32fc IK |
152 | #define AUTOFS_IOC_EXPIRE_INDIRECT AUTOFS_IOC_EXPIRE_MULTI |
153 | #define AUTOFS_IOC_EXPIRE_DIRECT AUTOFS_IOC_EXPIRE_MULTI | |
e9a7c2f1 IK |
154 | #define AUTOFS_IOC_PROTOSUBVER _IOR(0x93, 0x67, int) |
155 | #define AUTOFS_IOC_ASKUMOUNT _IOR(0x93, 0x70, int) | |
1da177e4 LT |
156 | |
157 | #endif /* _LINUX_AUTO_FS4_H */ |