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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 | ||
13 | #include <linux/types.h> | |
14 | ||
15 | #define AUTOFS_DEVICE_NAME "autofs" | |
16 | ||
17 | #define AUTOFS_DEV_IOCTL_VERSION_MAJOR 1 | |
18 | #define AUTOFS_DEV_IOCTL_VERSION_MINOR 0 | |
19 | ||
20 | #define AUTOFS_DEVID_LEN 16 | |
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 | /* | |
29 | * All the ioctls use this structure. | |
30 | * When sending a path size must account for the total length | |
31 | * of the chunk of memory otherwise is is the size of the | |
32 | * structure. | |
33 | */ | |
34 | ||
35 | struct autofs_dev_ioctl { | |
36 | __u32 ver_major; | |
37 | __u32 ver_minor; | |
38 | __u32 size; /* total size of data passed in | |
39 | * including this struct */ | |
40 | __s32 ioctlfd; /* automount command fd */ | |
41 | ||
42 | __u32 arg1; /* Command parameters */ | |
43 | __u32 arg2; | |
44 | ||
45 | char path[0]; | |
46 | }; | |
47 | ||
48 | static inline void init_autofs_dev_ioctl(struct autofs_dev_ioctl *in) | |
49 | { | |
50 | in->ver_major = AUTOFS_DEV_IOCTL_VERSION_MAJOR; | |
51 | in->ver_minor = AUTOFS_DEV_IOCTL_VERSION_MINOR; | |
52 | in->size = sizeof(struct autofs_dev_ioctl); | |
53 | in->ioctlfd = -1; | |
54 | in->arg1 = 0; | |
55 | in->arg2 = 0; | |
56 | return; | |
57 | } | |
58 | ||
59 | /* | |
60 | * If you change this make sure you make the corresponding change | |
61 | * to autofs-dev-ioctl.c:lookup_ioctl() | |
62 | */ | |
63 | enum { | |
64 | /* Get various version info */ | |
65 | AUTOFS_DEV_IOCTL_VERSION_CMD = 0x71, | |
66 | AUTOFS_DEV_IOCTL_PROTOVER_CMD, | |
67 | AUTOFS_DEV_IOCTL_PROTOSUBVER_CMD, | |
68 | ||
69 | /* Open mount ioctl fd */ | |
70 | AUTOFS_DEV_IOCTL_OPENMOUNT_CMD, | |
71 | ||
72 | /* Close mount ioctl fd */ | |
73 | AUTOFS_DEV_IOCTL_CLOSEMOUNT_CMD, | |
74 | ||
75 | /* Mount/expire status returns */ | |
76 | AUTOFS_DEV_IOCTL_READY_CMD, | |
77 | AUTOFS_DEV_IOCTL_FAIL_CMD, | |
78 | ||
79 | /* Activate/deactivate autofs mount */ | |
80 | AUTOFS_DEV_IOCTL_SETPIPEFD_CMD, | |
81 | AUTOFS_DEV_IOCTL_CATATONIC_CMD, | |
82 | ||
83 | /* Expiry timeout */ | |
84 | AUTOFS_DEV_IOCTL_TIMEOUT_CMD, | |
85 | ||
86 | /* Get mount last requesting uid and gid */ | |
87 | AUTOFS_DEV_IOCTL_REQUESTER_CMD, | |
88 | ||
89 | /* Check for eligible expire candidates */ | |
90 | AUTOFS_DEV_IOCTL_EXPIRE_CMD, | |
91 | ||
92 | /* Request busy status */ | |
93 | AUTOFS_DEV_IOCTL_ASKUMOUNT_CMD, | |
94 | ||
95 | /* Check if path is a mountpoint */ | |
96 | AUTOFS_DEV_IOCTL_ISMOUNTPOINT_CMD, | |
97 | }; | |
98 | ||
99 | #define AUTOFS_IOCTL 0x93 | |
100 | ||
101 | #define AUTOFS_DEV_IOCTL_VERSION \ | |
102 | _IOWR(AUTOFS_IOCTL, \ | |
103 | AUTOFS_DEV_IOCTL_VERSION_CMD, struct autofs_dev_ioctl) | |
104 | ||
105 | #define AUTOFS_DEV_IOCTL_PROTOVER \ | |
106 | _IOWR(AUTOFS_IOCTL, \ | |
107 | AUTOFS_DEV_IOCTL_PROTOVER_CMD, struct autofs_dev_ioctl) | |
108 | ||
109 | #define AUTOFS_DEV_IOCTL_PROTOSUBVER \ | |
110 | _IOWR(AUTOFS_IOCTL, \ | |
111 | AUTOFS_DEV_IOCTL_PROTOSUBVER_CMD, struct autofs_dev_ioctl) | |
112 | ||
113 | #define AUTOFS_DEV_IOCTL_OPENMOUNT \ | |
114 | _IOWR(AUTOFS_IOCTL, \ | |
115 | AUTOFS_DEV_IOCTL_OPENMOUNT_CMD, struct autofs_dev_ioctl) | |
116 | ||
117 | #define AUTOFS_DEV_IOCTL_CLOSEMOUNT \ | |
118 | _IOWR(AUTOFS_IOCTL, \ | |
119 | AUTOFS_DEV_IOCTL_CLOSEMOUNT_CMD, struct autofs_dev_ioctl) | |
120 | ||
121 | #define AUTOFS_DEV_IOCTL_READY \ | |
122 | _IOWR(AUTOFS_IOCTL, \ | |
123 | AUTOFS_DEV_IOCTL_READY_CMD, struct autofs_dev_ioctl) | |
124 | ||
125 | #define AUTOFS_DEV_IOCTL_FAIL \ | |
126 | _IOWR(AUTOFS_IOCTL, \ | |
127 | AUTOFS_DEV_IOCTL_FAIL_CMD, struct autofs_dev_ioctl) | |
128 | ||
129 | #define AUTOFS_DEV_IOCTL_SETPIPEFD \ | |
130 | _IOWR(AUTOFS_IOCTL, \ | |
131 | AUTOFS_DEV_IOCTL_SETPIPEFD_CMD, struct autofs_dev_ioctl) | |
132 | ||
133 | #define AUTOFS_DEV_IOCTL_CATATONIC \ | |
134 | _IOWR(AUTOFS_IOCTL, \ | |
135 | AUTOFS_DEV_IOCTL_CATATONIC_CMD, struct autofs_dev_ioctl) | |
136 | ||
137 | #define AUTOFS_DEV_IOCTL_TIMEOUT \ | |
138 | _IOWR(AUTOFS_IOCTL, \ | |
139 | AUTOFS_DEV_IOCTL_TIMEOUT_CMD, struct autofs_dev_ioctl) | |
140 | ||
141 | #define AUTOFS_DEV_IOCTL_REQUESTER \ | |
142 | _IOWR(AUTOFS_IOCTL, \ | |
143 | AUTOFS_DEV_IOCTL_REQUESTER_CMD, struct autofs_dev_ioctl) | |
144 | ||
145 | #define AUTOFS_DEV_IOCTL_EXPIRE \ | |
146 | _IOWR(AUTOFS_IOCTL, \ | |
147 | AUTOFS_DEV_IOCTL_EXPIRE_CMD, struct autofs_dev_ioctl) | |
148 | ||
149 | #define AUTOFS_DEV_IOCTL_ASKUMOUNT \ | |
150 | _IOWR(AUTOFS_IOCTL, \ | |
151 | AUTOFS_DEV_IOCTL_ASKUMOUNT_CMD, struct autofs_dev_ioctl) | |
152 | ||
153 | #define AUTOFS_DEV_IOCTL_ISMOUNTPOINT \ | |
154 | _IOWR(AUTOFS_IOCTL, \ | |
155 | AUTOFS_DEV_IOCTL_ISMOUNTPOINT_CMD, struct autofs_dev_ioctl) | |
156 | ||
157 | #endif /* _LINUX_AUTO_DEV_IOCTL_H */ |