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1 | /* -*- mode: c; c-basic-offset: 8; -*- |
2 | * vim: noexpandtab sw=8 ts=8 sts=0: | |
3 | * | |
4 | * ocfs2_ioctl.h | |
5 | * | |
6 | * Defines OCFS2 ioctls. | |
7 | * | |
8 | * Copyright (C) 2010 Oracle. All rights reserved. | |
9 | * | |
10 | * This program is free software; you can redistribute it and/or | |
11 | * modify it under the terms of the GNU General Public | |
12 | * License, version 2, as published by the Free Software Foundation. | |
13 | * | |
14 | * This program is distributed in the hope that it will be useful, | |
15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
17 | * General Public License for more details. | |
18 | */ | |
19 | ||
20 | #ifndef OCFS2_IOCTL_H | |
21 | #define OCFS2_IOCTL_H | |
22 | ||
23 | /* | |
24 | * ioctl commands | |
25 | */ | |
0000b862 TM |
26 | #define OCFS2_IOC_GETFLAGS FS_IOC_GETFLAGS |
27 | #define OCFS2_IOC_SETFLAGS FS_IOC_SETFLAGS | |
28 | #define OCFS2_IOC32_GETFLAGS FS_IOC32_GETFLAGS | |
29 | #define OCFS2_IOC32_SETFLAGS FS_IOC32_SETFLAGS | |
9df5778e TY |
30 | |
31 | /* | |
32 | * Space reservation / allocation / free ioctls and argument structure | |
33 | * are designed to be compatible with XFS. | |
34 | * | |
35 | * ALLOCSP* and FREESP* are not and will never be supported, but are | |
36 | * included here for completeness. | |
37 | */ | |
38 | struct ocfs2_space_resv { | |
39 | __s16 l_type; | |
40 | __s16 l_whence; | |
41 | __s64 l_start; | |
42 | __s64 l_len; /* len == 0 means until end of file */ | |
43 | __s32 l_sysid; | |
44 | __u32 l_pid; | |
45 | __s32 l_pad[4]; /* reserve area */ | |
46 | }; | |
47 | ||
48 | #define OCFS2_IOC_ALLOCSP _IOW ('X', 10, struct ocfs2_space_resv) | |
49 | #define OCFS2_IOC_FREESP _IOW ('X', 11, struct ocfs2_space_resv) | |
50 | #define OCFS2_IOC_RESVSP _IOW ('X', 40, struct ocfs2_space_resv) | |
51 | #define OCFS2_IOC_UNRESVSP _IOW ('X', 41, struct ocfs2_space_resv) | |
52 | #define OCFS2_IOC_ALLOCSP64 _IOW ('X', 36, struct ocfs2_space_resv) | |
53 | #define OCFS2_IOC_FREESP64 _IOW ('X', 37, struct ocfs2_space_resv) | |
54 | #define OCFS2_IOC_RESVSP64 _IOW ('X', 42, struct ocfs2_space_resv) | |
55 | #define OCFS2_IOC_UNRESVSP64 _IOW ('X', 43, struct ocfs2_space_resv) | |
56 | ||
57 | /* Used to pass group descriptor data when online resize is done */ | |
58 | struct ocfs2_new_group_input { | |
59 | __u64 group; /* Group descriptor's blkno. */ | |
60 | __u32 clusters; /* Total number of clusters in this group */ | |
61 | __u32 frees; /* Total free clusters in this group */ | |
62 | __u16 chain; /* Chain for this group */ | |
63 | __u16 reserved1; | |
64 | __u32 reserved2; | |
65 | }; | |
66 | ||
67 | #define OCFS2_IOC_GROUP_EXTEND _IOW('o', 1, int) | |
68 | #define OCFS2_IOC_GROUP_ADD _IOW('o', 2,struct ocfs2_new_group_input) | |
69 | #define OCFS2_IOC_GROUP_ADD64 _IOW('o', 3,struct ocfs2_new_group_input) | |
70 | ||
71 | /* Used to pass 2 file names to reflink. */ | |
72 | struct reflink_arguments { | |
73 | __u64 old_path; | |
74 | __u64 new_path; | |
75 | __u64 preserve; | |
76 | }; | |
77 | #define OCFS2_IOC_REFLINK _IOW('o', 4, struct reflink_arguments) | |
78 | ||
ddee5cdb TY |
79 | /* Following definitions dedicated for ocfs2_info_request ioctls. */ |
80 | #define OCFS2_INFO_MAX_REQUEST (50) | |
81 | #define OCFS2_TEXT_UUID_LEN (OCFS2_VOL_UUID_LEN * 2) | |
82 | ||
83 | /* Magic number of all requests */ | |
84 | #define OCFS2_INFO_MAGIC (0x4F32494E) | |
85 | ||
86 | /* | |
87 | * Always try to separate info request into small pieces to | |
88 | * guarantee the backward&forward compatibility. | |
89 | */ | |
90 | struct ocfs2_info { | |
91 | __u64 oi_requests; /* Array of __u64 pointers to requests */ | |
92 | __u32 oi_count; /* Number of requests in info_requests */ | |
93 | __u32 oi_pad; | |
94 | }; | |
95 | ||
96 | struct ocfs2_info_request { | |
97 | /*00*/ __u32 ir_magic; /* Magic number */ | |
98 | __u32 ir_code; /* Info request code */ | |
99 | __u32 ir_size; /* Size of request */ | |
100 | __u32 ir_flags; /* Request flags */ | |
101 | /*10*/ /* Request specific fields */ | |
102 | }; | |
103 | ||
104 | struct ocfs2_info_clustersize { | |
105 | struct ocfs2_info_request ic_req; | |
106 | __u32 ic_clustersize; | |
107 | __u32 ic_pad; | |
108 | }; | |
109 | ||
110 | struct ocfs2_info_blocksize { | |
111 | struct ocfs2_info_request ib_req; | |
112 | __u32 ib_blocksize; | |
113 | __u32 ib_pad; | |
114 | }; | |
115 | ||
116 | struct ocfs2_info_maxslots { | |
117 | struct ocfs2_info_request im_req; | |
118 | __u32 im_max_slots; | |
119 | __u32 im_pad; | |
120 | }; | |
121 | ||
122 | struct ocfs2_info_label { | |
123 | struct ocfs2_info_request il_req; | |
124 | __u8 il_label[OCFS2_MAX_VOL_LABEL_LEN]; | |
125 | } __attribute__ ((packed)); | |
126 | ||
127 | struct ocfs2_info_uuid { | |
128 | struct ocfs2_info_request iu_req; | |
129 | __u8 iu_uuid_str[OCFS2_TEXT_UUID_LEN + 1]; | |
130 | } __attribute__ ((packed)); | |
131 | ||
132 | struct ocfs2_info_fs_features { | |
133 | struct ocfs2_info_request if_req; | |
134 | __u32 if_compat_features; | |
135 | __u32 if_incompat_features; | |
136 | __u32 if_ro_compat_features; | |
137 | __u32 if_pad; | |
138 | }; | |
139 | ||
140 | struct ocfs2_info_journal_size { | |
141 | struct ocfs2_info_request ij_req; | |
142 | __u64 ij_journal_size; | |
143 | }; | |
144 | ||
145 | /* Codes for ocfs2_info_request */ | |
146 | enum ocfs2_info_type { | |
147 | OCFS2_INFO_CLUSTERSIZE = 1, | |
148 | OCFS2_INFO_BLOCKSIZE, | |
149 | OCFS2_INFO_MAXSLOTS, | |
150 | OCFS2_INFO_LABEL, | |
151 | OCFS2_INFO_UUID, | |
152 | OCFS2_INFO_FS_FEATURES, | |
153 | OCFS2_INFO_JOURNAL_SIZE, | |
154 | OCFS2_INFO_NUM_TYPES | |
155 | }; | |
156 | ||
157 | /* Flags for struct ocfs2_info_request */ | |
158 | /* Filled by the caller */ | |
159 | #define OCFS2_INFO_FL_NON_COHERENT (0x00000001) /* Cluster coherency not | |
160 | required. This is a hint. | |
161 | It is up to ocfs2 whether | |
162 | the request can be fulfilled | |
163 | without locking. */ | |
164 | /* Filled by ocfs2 */ | |
165 | #define OCFS2_INFO_FL_FILLED (0x40000000) /* Filesystem understood | |
166 | this request and | |
167 | filled in the answer */ | |
168 | ||
169 | #define OCFS2_INFO_FL_ERROR (0x80000000) /* Error happened during | |
170 | request handling. */ | |
171 | ||
172 | #define OCFS2_IOC_INFO _IOR('o', 5, struct ocfs2_info) | |
173 | ||
9df5778e | 174 | #endif /* OCFS2_IOCTL_H */ |