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e2be04c7 | 1 | /* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */ |
9b88ee0f IK |
2 | /* |
3 | * Copyright 2008 Red Hat, Inc. All rights reserved. | |
4 | * Copyright 2008 Ian Kent <raven@themaw.net> | |
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 _UAPI_LINUX_AUTO_DEV_IOCTL_H | |
12 | #define _UAPI_LINUX_AUTO_DEV_IOCTL_H | |
13 | ||
14 | #include <linux/auto_fs.h> | |
15 | #include <linux/string.h> | |
16 | ||
17 | #define AUTOFS_DEVICE_NAME "autofs" | |
18 | ||
19 | #define AUTOFS_DEV_IOCTL_VERSION_MAJOR 1 | |
3dd8f7c3 | 20 | #define AUTOFS_DEV_IOCTL_VERSION_MINOR 1 |
9b88ee0f IK |
21 | |
22 | #define AUTOFS_DEV_IOCTL_SIZE sizeof(struct autofs_dev_ioctl) | |
23 | ||
24 | /* | |
25 | * An ioctl interface for autofs mount point control. | |
26 | */ | |
27 | ||
28 | struct args_protover { | |
29 | __u32 version; | |
30 | }; | |
31 | ||
32 | struct args_protosubver { | |
33 | __u32 sub_version; | |
34 | }; | |
35 | ||
36 | struct args_openmount { | |
37 | __u32 devid; | |
38 | }; | |
39 | ||
40 | struct args_ready { | |
41 | __u32 token; | |
42 | }; | |
43 | ||
44 | struct args_fail { | |
45 | __u32 token; | |
46 | __s32 status; | |
47 | }; | |
48 | ||
49 | struct args_setpipefd { | |
50 | __s32 pipefd; | |
51 | }; | |
52 | ||
53 | struct args_timeout { | |
54 | __u64 timeout; | |
55 | }; | |
56 | ||
57 | struct args_requester { | |
58 | __u32 uid; | |
59 | __u32 gid; | |
60 | }; | |
61 | ||
62 | struct args_expire { | |
63 | __u32 how; | |
64 | }; | |
65 | ||
66 | struct args_askumount { | |
67 | __u32 may_umount; | |
68 | }; | |
69 | ||
70 | struct args_ismountpoint { | |
71 | union { | |
72 | struct args_in { | |
73 | __u32 type; | |
74 | } in; | |
75 | struct args_out { | |
76 | __u32 devid; | |
77 | __u32 magic; | |
78 | } out; | |
79 | }; | |
80 | }; | |
81 | ||
82 | /* | |
83 | * All the ioctls use this structure. | |
84 | * When sending a path size must account for the total length | |
85 | * of the chunk of memory otherwise is is the size of the | |
86 | * structure. | |
87 | */ | |
88 | ||
89 | struct autofs_dev_ioctl { | |
90 | __u32 ver_major; | |
91 | __u32 ver_minor; | |
92 | __u32 size; /* total size of data passed in | |
93 | * including this struct */ | |
94 | __s32 ioctlfd; /* automount command fd */ | |
95 | ||
96 | /* Command parameters */ | |
97 | ||
98 | union { | |
99 | struct args_protover protover; | |
100 | struct args_protosubver protosubver; | |
101 | struct args_openmount openmount; | |
102 | struct args_ready ready; | |
103 | struct args_fail fail; | |
104 | struct args_setpipefd setpipefd; | |
105 | struct args_timeout timeout; | |
106 | struct args_requester requester; | |
107 | struct args_expire expire; | |
108 | struct args_askumount askumount; | |
109 | struct args_ismountpoint ismountpoint; | |
110 | }; | |
111 | ||
112 | char path[0]; | |
113 | }; | |
114 | ||
115 | static inline void init_autofs_dev_ioctl(struct autofs_dev_ioctl *in) | |
116 | { | |
3bb2fbda | 117 | memset(in, 0, AUTOFS_DEV_IOCTL_SIZE); |
9b88ee0f IK |
118 | in->ver_major = AUTOFS_DEV_IOCTL_VERSION_MAJOR; |
119 | in->ver_minor = AUTOFS_DEV_IOCTL_VERSION_MINOR; | |
3bb2fbda | 120 | in->size = AUTOFS_DEV_IOCTL_SIZE; |
9b88ee0f IK |
121 | in->ioctlfd = -1; |
122 | } | |
123 | ||
9b88ee0f IK |
124 | enum { |
125 | /* Get various version info */ | |
126 | AUTOFS_DEV_IOCTL_VERSION_CMD = 0x71, | |
127 | AUTOFS_DEV_IOCTL_PROTOVER_CMD, | |
128 | AUTOFS_DEV_IOCTL_PROTOSUBVER_CMD, | |
129 | ||
130 | /* Open mount ioctl fd */ | |
131 | AUTOFS_DEV_IOCTL_OPENMOUNT_CMD, | |
132 | ||
133 | /* Close mount ioctl fd */ | |
134 | AUTOFS_DEV_IOCTL_CLOSEMOUNT_CMD, | |
135 | ||
136 | /* Mount/expire status returns */ | |
137 | AUTOFS_DEV_IOCTL_READY_CMD, | |
138 | AUTOFS_DEV_IOCTL_FAIL_CMD, | |
139 | ||
140 | /* Activate/deactivate autofs mount */ | |
141 | AUTOFS_DEV_IOCTL_SETPIPEFD_CMD, | |
142 | AUTOFS_DEV_IOCTL_CATATONIC_CMD, | |
143 | ||
144 | /* Expiry timeout */ | |
145 | AUTOFS_DEV_IOCTL_TIMEOUT_CMD, | |
146 | ||
147 | /* Get mount last requesting uid and gid */ | |
148 | AUTOFS_DEV_IOCTL_REQUESTER_CMD, | |
149 | ||
150 | /* Check for eligible expire candidates */ | |
151 | AUTOFS_DEV_IOCTL_EXPIRE_CMD, | |
152 | ||
153 | /* Request busy status */ | |
154 | AUTOFS_DEV_IOCTL_ASKUMOUNT_CMD, | |
155 | ||
156 | /* Check if path is a mountpoint */ | |
157 | AUTOFS_DEV_IOCTL_ISMOUNTPOINT_CMD, | |
158 | }; | |
159 | ||
9b88ee0f IK |
160 | #define AUTOFS_DEV_IOCTL_VERSION \ |
161 | _IOWR(AUTOFS_IOCTL, \ | |
162 | AUTOFS_DEV_IOCTL_VERSION_CMD, struct autofs_dev_ioctl) | |
163 | ||
164 | #define AUTOFS_DEV_IOCTL_PROTOVER \ | |
165 | _IOWR(AUTOFS_IOCTL, \ | |
166 | AUTOFS_DEV_IOCTL_PROTOVER_CMD, struct autofs_dev_ioctl) | |
167 | ||
168 | #define AUTOFS_DEV_IOCTL_PROTOSUBVER \ | |
169 | _IOWR(AUTOFS_IOCTL, \ | |
170 | AUTOFS_DEV_IOCTL_PROTOSUBVER_CMD, struct autofs_dev_ioctl) | |
171 | ||
172 | #define AUTOFS_DEV_IOCTL_OPENMOUNT \ | |
173 | _IOWR(AUTOFS_IOCTL, \ | |
174 | AUTOFS_DEV_IOCTL_OPENMOUNT_CMD, struct autofs_dev_ioctl) | |
175 | ||
176 | #define AUTOFS_DEV_IOCTL_CLOSEMOUNT \ | |
177 | _IOWR(AUTOFS_IOCTL, \ | |
178 | AUTOFS_DEV_IOCTL_CLOSEMOUNT_CMD, struct autofs_dev_ioctl) | |
179 | ||
180 | #define AUTOFS_DEV_IOCTL_READY \ | |
181 | _IOWR(AUTOFS_IOCTL, \ | |
182 | AUTOFS_DEV_IOCTL_READY_CMD, struct autofs_dev_ioctl) | |
183 | ||
184 | #define AUTOFS_DEV_IOCTL_FAIL \ | |
185 | _IOWR(AUTOFS_IOCTL, \ | |
186 | AUTOFS_DEV_IOCTL_FAIL_CMD, struct autofs_dev_ioctl) | |
187 | ||
188 | #define AUTOFS_DEV_IOCTL_SETPIPEFD \ | |
189 | _IOWR(AUTOFS_IOCTL, \ | |
190 | AUTOFS_DEV_IOCTL_SETPIPEFD_CMD, struct autofs_dev_ioctl) | |
191 | ||
192 | #define AUTOFS_DEV_IOCTL_CATATONIC \ | |
193 | _IOWR(AUTOFS_IOCTL, \ | |
194 | AUTOFS_DEV_IOCTL_CATATONIC_CMD, struct autofs_dev_ioctl) | |
195 | ||
196 | #define AUTOFS_DEV_IOCTL_TIMEOUT \ | |
197 | _IOWR(AUTOFS_IOCTL, \ | |
198 | AUTOFS_DEV_IOCTL_TIMEOUT_CMD, struct autofs_dev_ioctl) | |
199 | ||
200 | #define AUTOFS_DEV_IOCTL_REQUESTER \ | |
201 | _IOWR(AUTOFS_IOCTL, \ | |
202 | AUTOFS_DEV_IOCTL_REQUESTER_CMD, struct autofs_dev_ioctl) | |
203 | ||
204 | #define AUTOFS_DEV_IOCTL_EXPIRE \ | |
205 | _IOWR(AUTOFS_IOCTL, \ | |
206 | AUTOFS_DEV_IOCTL_EXPIRE_CMD, struct autofs_dev_ioctl) | |
207 | ||
208 | #define AUTOFS_DEV_IOCTL_ASKUMOUNT \ | |
209 | _IOWR(AUTOFS_IOCTL, \ | |
210 | AUTOFS_DEV_IOCTL_ASKUMOUNT_CMD, struct autofs_dev_ioctl) | |
211 | ||
212 | #define AUTOFS_DEV_IOCTL_ISMOUNTPOINT \ | |
213 | _IOWR(AUTOFS_IOCTL, \ | |
214 | AUTOFS_DEV_IOCTL_ISMOUNTPOINT_CMD, struct autofs_dev_ioctl) | |
215 | ||
216 | #endif /* _UAPI_LINUX_AUTO_DEV_IOCTL_H */ |