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1 | /* |
2 | * Copyright 2008 Red Hat, Inc. All rights reserved. | |
3 | * Copyright 2008 Ian Kent <raven@themaw.net> | |
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_DEV_IOCTL_H | |
11 | #define _LINUX_AUTO_DEV_IOCTL_H | |
12 | ||
79955898 IK |
13 | #include <linux/auto_fs.h> |
14 | ||
15 | #ifdef __KERNEL__ | |
730c9eec | 16 | #include <linux/string.h> |
79955898 IK |
17 | #else |
18 | #include <string.h> | |
19 | #endif /* __KERNEL__ */ | |
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20 | |
21 | #define AUTOFS_DEVICE_NAME "autofs" | |
22 | ||
23 | #define AUTOFS_DEV_IOCTL_VERSION_MAJOR 1 | |
24 | #define AUTOFS_DEV_IOCTL_VERSION_MINOR 0 | |
25 | ||
26 | #define AUTOFS_DEVID_LEN 16 | |
27 | ||
28 | #define AUTOFS_DEV_IOCTL_SIZE sizeof(struct autofs_dev_ioctl) | |
29 | ||
30 | /* | |
31 | * An ioctl interface for autofs mount point control. | |
32 | */ | |
33 | ||
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34 | struct args_protover { |
35 | __u32 version; | |
36 | }; | |
37 | ||
38 | struct args_protosubver { | |
39 | __u32 sub_version; | |
40 | }; | |
41 | ||
42 | struct args_openmount { | |
43 | __u32 devid; | |
44 | }; | |
45 | ||
46 | struct args_ready { | |
47 | __u32 token; | |
48 | }; | |
49 | ||
50 | struct args_fail { | |
51 | __u32 token; | |
52 | __s32 status; | |
53 | }; | |
54 | ||
55 | struct args_setpipefd { | |
56 | __s32 pipefd; | |
57 | }; | |
58 | ||
59 | struct args_timeout { | |
60 | __u64 timeout; | |
61 | }; | |
62 | ||
63 | struct args_requester { | |
64 | __u32 uid; | |
65 | __u32 gid; | |
66 | }; | |
67 | ||
68 | struct args_expire { | |
69 | __u32 how; | |
70 | }; | |
71 | ||
72 | struct args_askumount { | |
73 | __u32 may_umount; | |
74 | }; | |
75 | ||
76 | struct args_ismountpoint { | |
77 | union { | |
78 | struct args_in { | |
79 | __u32 type; | |
80 | } in; | |
81 | struct args_out { | |
82 | __u32 devid; | |
83 | __u32 magic; | |
84 | } out; | |
85 | }; | |
86 | }; | |
87 | ||
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88 | /* |
89 | * All the ioctls use this structure. | |
90 | * When sending a path size must account for the total length | |
91 | * of the chunk of memory otherwise is is the size of the | |
92 | * structure. | |
93 | */ | |
94 | ||
95 | struct autofs_dev_ioctl { | |
96 | __u32 ver_major; | |
97 | __u32 ver_minor; | |
98 | __u32 size; /* total size of data passed in | |
99 | * including this struct */ | |
100 | __s32 ioctlfd; /* automount command fd */ | |
101 | ||
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102 | /* Command parameters */ |
103 | ||
104 | union { | |
105 | struct args_protover protover; | |
106 | struct args_protosubver protosubver; | |
107 | struct args_openmount openmount; | |
108 | struct args_ready ready; | |
109 | struct args_fail fail; | |
110 | struct args_setpipefd setpipefd; | |
111 | struct args_timeout timeout; | |
112 | struct args_requester requester; | |
113 | struct args_expire expire; | |
114 | struct args_askumount askumount; | |
115 | struct args_ismountpoint ismountpoint; | |
116 | }; | |
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117 | |
118 | char path[0]; | |
119 | }; | |
120 | ||
121 | static inline void init_autofs_dev_ioctl(struct autofs_dev_ioctl *in) | |
122 | { | |
730c9eec | 123 | memset(in, 0, sizeof(struct autofs_dev_ioctl)); |
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124 | in->ver_major = AUTOFS_DEV_IOCTL_VERSION_MAJOR; |
125 | in->ver_minor = AUTOFS_DEV_IOCTL_VERSION_MINOR; | |
126 | in->size = sizeof(struct autofs_dev_ioctl); | |
127 | in->ioctlfd = -1; | |
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128 | return; |
129 | } | |
130 | ||
131 | /* | |
132 | * If you change this make sure you make the corresponding change | |
133 | * to autofs-dev-ioctl.c:lookup_ioctl() | |
134 | */ | |
135 | enum { | |
136 | /* Get various version info */ | |
137 | AUTOFS_DEV_IOCTL_VERSION_CMD = 0x71, | |
138 | AUTOFS_DEV_IOCTL_PROTOVER_CMD, | |
139 | AUTOFS_DEV_IOCTL_PROTOSUBVER_CMD, | |
140 | ||
141 | /* Open mount ioctl fd */ | |
142 | AUTOFS_DEV_IOCTL_OPENMOUNT_CMD, | |
143 | ||
144 | /* Close mount ioctl fd */ | |
145 | AUTOFS_DEV_IOCTL_CLOSEMOUNT_CMD, | |
146 | ||
147 | /* Mount/expire status returns */ | |
148 | AUTOFS_DEV_IOCTL_READY_CMD, | |
149 | AUTOFS_DEV_IOCTL_FAIL_CMD, | |
150 | ||
151 | /* Activate/deactivate autofs mount */ | |
152 | AUTOFS_DEV_IOCTL_SETPIPEFD_CMD, | |
153 | AUTOFS_DEV_IOCTL_CATATONIC_CMD, | |
154 | ||
155 | /* Expiry timeout */ | |
156 | AUTOFS_DEV_IOCTL_TIMEOUT_CMD, | |
157 | ||
158 | /* Get mount last requesting uid and gid */ | |
159 | AUTOFS_DEV_IOCTL_REQUESTER_CMD, | |
160 | ||
161 | /* Check for eligible expire candidates */ | |
162 | AUTOFS_DEV_IOCTL_EXPIRE_CMD, | |
163 | ||
164 | /* Request busy status */ | |
165 | AUTOFS_DEV_IOCTL_ASKUMOUNT_CMD, | |
166 | ||
167 | /* Check if path is a mountpoint */ | |
168 | AUTOFS_DEV_IOCTL_ISMOUNTPOINT_CMD, | |
169 | }; | |
170 | ||
171 | #define AUTOFS_IOCTL 0x93 | |
172 | ||
173 | #define AUTOFS_DEV_IOCTL_VERSION \ | |
174 | _IOWR(AUTOFS_IOCTL, \ | |
175 | AUTOFS_DEV_IOCTL_VERSION_CMD, struct autofs_dev_ioctl) | |
176 | ||
177 | #define AUTOFS_DEV_IOCTL_PROTOVER \ | |
178 | _IOWR(AUTOFS_IOCTL, \ | |
179 | AUTOFS_DEV_IOCTL_PROTOVER_CMD, struct autofs_dev_ioctl) | |
180 | ||
181 | #define AUTOFS_DEV_IOCTL_PROTOSUBVER \ | |
182 | _IOWR(AUTOFS_IOCTL, \ | |
183 | AUTOFS_DEV_IOCTL_PROTOSUBVER_CMD, struct autofs_dev_ioctl) | |
184 | ||
185 | #define AUTOFS_DEV_IOCTL_OPENMOUNT \ | |
186 | _IOWR(AUTOFS_IOCTL, \ | |
187 | AUTOFS_DEV_IOCTL_OPENMOUNT_CMD, struct autofs_dev_ioctl) | |
188 | ||
189 | #define AUTOFS_DEV_IOCTL_CLOSEMOUNT \ | |
190 | _IOWR(AUTOFS_IOCTL, \ | |
191 | AUTOFS_DEV_IOCTL_CLOSEMOUNT_CMD, struct autofs_dev_ioctl) | |
192 | ||
193 | #define AUTOFS_DEV_IOCTL_READY \ | |
194 | _IOWR(AUTOFS_IOCTL, \ | |
195 | AUTOFS_DEV_IOCTL_READY_CMD, struct autofs_dev_ioctl) | |
196 | ||
197 | #define AUTOFS_DEV_IOCTL_FAIL \ | |
198 | _IOWR(AUTOFS_IOCTL, \ | |
199 | AUTOFS_DEV_IOCTL_FAIL_CMD, struct autofs_dev_ioctl) | |
200 | ||
201 | #define AUTOFS_DEV_IOCTL_SETPIPEFD \ | |
202 | _IOWR(AUTOFS_IOCTL, \ | |
203 | AUTOFS_DEV_IOCTL_SETPIPEFD_CMD, struct autofs_dev_ioctl) | |
204 | ||
205 | #define AUTOFS_DEV_IOCTL_CATATONIC \ | |
206 | _IOWR(AUTOFS_IOCTL, \ | |
207 | AUTOFS_DEV_IOCTL_CATATONIC_CMD, struct autofs_dev_ioctl) | |
208 | ||
209 | #define AUTOFS_DEV_IOCTL_TIMEOUT \ | |
210 | _IOWR(AUTOFS_IOCTL, \ | |
211 | AUTOFS_DEV_IOCTL_TIMEOUT_CMD, struct autofs_dev_ioctl) | |
212 | ||
213 | #define AUTOFS_DEV_IOCTL_REQUESTER \ | |
214 | _IOWR(AUTOFS_IOCTL, \ | |
215 | AUTOFS_DEV_IOCTL_REQUESTER_CMD, struct autofs_dev_ioctl) | |
216 | ||
217 | #define AUTOFS_DEV_IOCTL_EXPIRE \ | |
218 | _IOWR(AUTOFS_IOCTL, \ | |
219 | AUTOFS_DEV_IOCTL_EXPIRE_CMD, struct autofs_dev_ioctl) | |
220 | ||
221 | #define AUTOFS_DEV_IOCTL_ASKUMOUNT \ | |
222 | _IOWR(AUTOFS_IOCTL, \ | |
223 | AUTOFS_DEV_IOCTL_ASKUMOUNT_CMD, struct autofs_dev_ioctl) | |
224 | ||
225 | #define AUTOFS_DEV_IOCTL_ISMOUNTPOINT \ | |
226 | _IOWR(AUTOFS_IOCTL, \ | |
227 | AUTOFS_DEV_IOCTL_ISMOUNTPOINT_CMD, struct autofs_dev_ioctl) | |
228 | ||
229 | #endif /* _LINUX_AUTO_DEV_IOCTL_H */ |