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e2be04c7 | 1 | /* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */ |
e9a7c2f1 | 2 | /* |
1da177e4 LT |
3 | * Copyright 1999-2000 Jeremy Fitzhardinge <jeremy@goop.org> |
4 | * | |
5 | * This file is part of the Linux kernel and is made available under | |
6 | * the terms of the GNU General Public License, version 2, or at your | |
7 | * option, any later version, incorporated herein by reference. | |
8 | */ | |
9 | ||
10 | #ifndef _LINUX_AUTO_FS4_H | |
11 | #define _LINUX_AUTO_FS4_H | |
12 | ||
13 | /* Include common v3 definitions */ | |
5d461bfe | 14 | #include <linux/types.h> |
1da177e4 LT |
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 | ||
5c0a32fc | 22 | #define AUTOFS_PROTO_VERSION 5 |
1da177e4 | 23 | #define AUTOFS_MIN_PROTO_VERSION 3 |
5c0a32fc | 24 | #define AUTOFS_MAX_PROTO_VERSION 5 |
1da177e4 | 25 | |
1972580b | 26 | #define AUTOFS_PROTO_SUBVERSION 2 |
1da177e4 LT |
27 | |
28 | /* Mask for expire behaviour */ | |
29 | #define AUTOFS_EXP_IMMEDIATE 1 | |
30 | #define AUTOFS_EXP_LEAVES 2 | |
31 | ||
a92daf6b IK |
32 | #define AUTOFS_TYPE_ANY 0U |
33 | #define AUTOFS_TYPE_INDIRECT 1U | |
34 | #define AUTOFS_TYPE_DIRECT 2U | |
35 | #define AUTOFS_TYPE_OFFSET 4U | |
36 | ||
37 | static inline void set_autofs_type_indirect(unsigned int *type) | |
38 | { | |
39 | *type = AUTOFS_TYPE_INDIRECT; | |
a92daf6b IK |
40 | } |
41 | ||
42 | static inline unsigned int autofs_type_indirect(unsigned int type) | |
43 | { | |
44 | return (type == AUTOFS_TYPE_INDIRECT); | |
45 | } | |
46 | ||
47 | static inline void set_autofs_type_direct(unsigned int *type) | |
48 | { | |
49 | *type = AUTOFS_TYPE_DIRECT; | |
a92daf6b IK |
50 | } |
51 | ||
52 | static inline unsigned int autofs_type_direct(unsigned int type) | |
53 | { | |
54 | return (type == AUTOFS_TYPE_DIRECT); | |
55 | } | |
56 | ||
57 | static inline void set_autofs_type_offset(unsigned int *type) | |
58 | { | |
59 | *type = AUTOFS_TYPE_OFFSET; | |
a92daf6b IK |
60 | } |
61 | ||
62 | static inline unsigned int autofs_type_offset(unsigned int type) | |
63 | { | |
64 | return (type == AUTOFS_TYPE_OFFSET); | |
65 | } | |
66 | ||
67 | static inline unsigned int autofs_type_trigger(unsigned int type) | |
68 | { | |
69 | return (type == AUTOFS_TYPE_DIRECT || type == AUTOFS_TYPE_OFFSET); | |
70 | } | |
71 | ||
72 | /* | |
73 | * This isn't really a type as we use it to say "no type set" to | |
74 | * indicate we want to search for "any" mount in the | |
75 | * autofs_dev_ioctl_ismountpoint() device ioctl function. | |
76 | */ | |
77 | static inline void set_autofs_type_any(unsigned int *type) | |
78 | { | |
79 | *type = AUTOFS_TYPE_ANY; | |
a92daf6b IK |
80 | } |
81 | ||
82 | static inline unsigned int autofs_type_any(unsigned int type) | |
83 | { | |
84 | return (type == AUTOFS_TYPE_ANY); | |
85 | } | |
bb979d7f | 86 | |
5c0a32fc IK |
87 | /* Daemon notification packet types */ |
88 | enum autofs_notify { | |
89 | NFY_NONE, | |
90 | NFY_MOUNT, | |
91 | NFY_EXPIRE | |
92 | }; | |
93 | ||
94 | /* Kernel protocol version 4 packet types */ | |
95 | ||
96 | /* Expire entry (umount request) */ | |
97 | #define autofs_ptype_expire_multi 2 | |
98 | ||
99 | /* Kernel protocol version 5 packet types */ | |
100 | ||
101 | /* Indirect mount missing and expire requests. */ | |
102 | #define autofs_ptype_missing_indirect 3 | |
103 | #define autofs_ptype_expire_indirect 4 | |
104 | ||
105 | /* Direct mount missing and expire requests */ | |
106 | #define autofs_ptype_missing_direct 5 | |
107 | #define autofs_ptype_expire_direct 6 | |
1da177e4 LT |
108 | |
109 | /* v4 multi expire (via pipe) */ | |
110 | struct autofs_packet_expire_multi { | |
111 | struct autofs_packet_hdr hdr; | |
7cee9384 | 112 | autofs_wqt_t wait_queue_token; |
1da177e4 LT |
113 | int len; |
114 | char name[NAME_MAX+1]; | |
115 | }; | |
116 | ||
e8514478 IK |
117 | union autofs_packet_union { |
118 | struct autofs_packet_hdr hdr; | |
119 | struct autofs_packet_missing missing; | |
120 | struct autofs_packet_expire expire; | |
121 | struct autofs_packet_expire_multi expire_multi; | |
122 | }; | |
123 | ||
5c0a32fc IK |
124 | /* autofs v5 common packet struct */ |
125 | struct autofs_v5_packet { | |
126 | struct autofs_packet_hdr hdr; | |
7cee9384 | 127 | autofs_wqt_t wait_queue_token; |
5c0a32fc IK |
128 | __u32 dev; |
129 | __u64 ino; | |
130 | __u32 uid; | |
131 | __u32 gid; | |
132 | __u32 pid; | |
133 | __u32 tgid; | |
134 | __u32 len; | |
135 | char name[NAME_MAX+1]; | |
136 | }; | |
137 | ||
138 | typedef struct autofs_v5_packet autofs_packet_missing_indirect_t; | |
139 | typedef struct autofs_v5_packet autofs_packet_expire_indirect_t; | |
140 | typedef struct autofs_v5_packet autofs_packet_missing_direct_t; | |
141 | typedef struct autofs_v5_packet autofs_packet_expire_direct_t; | |
142 | ||
e8514478 | 143 | union autofs_v5_packet_union { |
1da177e4 | 144 | struct autofs_packet_hdr hdr; |
5c0a32fc | 145 | struct autofs_v5_packet v5_packet; |
e8514478 IK |
146 | autofs_packet_missing_indirect_t missing_indirect; |
147 | autofs_packet_expire_indirect_t expire_indirect; | |
148 | autofs_packet_missing_direct_t missing_direct; | |
149 | autofs_packet_expire_direct_t expire_direct; | |
1da177e4 LT |
150 | }; |
151 | ||
0fae77fe TK |
152 | enum { |
153 | AUTOFS_IOC_EXPIRE_MULTI_CMD = 0x66, /* AUTOFS_IOC_EXPIRE_CMD + 1 */ | |
154 | AUTOFS_IOC_PROTOSUBVER_CMD, | |
155 | AUTOFS_IOC_ASKUMOUNT_CMD = 0x70, /* AUTOFS_DEV_IOCTL_VERSION_CMD - 1 */ | |
156 | }; | |
157 | ||
158 | #define AUTOFS_IOC_EXPIRE_MULTI _IOW(AUTOFS_IOCTL, AUTOFS_IOC_EXPIRE_MULTI_CMD, int) | |
0fae77fe TK |
159 | #define AUTOFS_IOC_PROTOSUBVER _IOR(AUTOFS_IOCTL, AUTOFS_IOC_PROTOSUBVER_CMD, int) |
160 | #define AUTOFS_IOC_ASKUMOUNT _IOR(AUTOFS_IOCTL, AUTOFS_IOC_ASKUMOUNT_CMD, int) | |
1da177e4 LT |
161 | |
162 | #endif /* _LINUX_AUTO_FS4_H */ |