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1802d0be | 1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
fa60ce2c | 2 | /* |
9df5778e TY |
3 | * ocfs2_ioctl.h |
4 | * | |
5 | * Defines OCFS2 ioctls. | |
6 | * | |
7 | * Copyright (C) 2010 Oracle. All rights reserved. | |
9df5778e TY |
8 | */ |
9 | ||
10 | #ifndef OCFS2_IOCTL_H | |
11 | #define OCFS2_IOCTL_H | |
12 | ||
9df5778e TY |
13 | /* |
14 | * Space reservation / allocation / free ioctls and argument structure | |
15 | * are designed to be compatible with XFS. | |
16 | * | |
17 | * ALLOCSP* and FREESP* are not and will never be supported, but are | |
18 | * included here for completeness. | |
19 | */ | |
20 | struct ocfs2_space_resv { | |
21 | __s16 l_type; | |
22 | __s16 l_whence; | |
23 | __s64 l_start; | |
24 | __s64 l_len; /* len == 0 means until end of file */ | |
25 | __s32 l_sysid; | |
26 | __u32 l_pid; | |
27 | __s32 l_pad[4]; /* reserve area */ | |
28 | }; | |
29 | ||
30 | #define OCFS2_IOC_ALLOCSP _IOW ('X', 10, struct ocfs2_space_resv) | |
31 | #define OCFS2_IOC_FREESP _IOW ('X', 11, struct ocfs2_space_resv) | |
32 | #define OCFS2_IOC_RESVSP _IOW ('X', 40, struct ocfs2_space_resv) | |
33 | #define OCFS2_IOC_UNRESVSP _IOW ('X', 41, struct ocfs2_space_resv) | |
34 | #define OCFS2_IOC_ALLOCSP64 _IOW ('X', 36, struct ocfs2_space_resv) | |
35 | #define OCFS2_IOC_FREESP64 _IOW ('X', 37, struct ocfs2_space_resv) | |
36 | #define OCFS2_IOC_RESVSP64 _IOW ('X', 42, struct ocfs2_space_resv) | |
37 | #define OCFS2_IOC_UNRESVSP64 _IOW ('X', 43, struct ocfs2_space_resv) | |
38 | ||
39 | /* Used to pass group descriptor data when online resize is done */ | |
40 | struct ocfs2_new_group_input { | |
41 | __u64 group; /* Group descriptor's blkno. */ | |
42 | __u32 clusters; /* Total number of clusters in this group */ | |
43 | __u32 frees; /* Total free clusters in this group */ | |
44 | __u16 chain; /* Chain for this group */ | |
45 | __u16 reserved1; | |
46 | __u32 reserved2; | |
47 | }; | |
48 | ||
49 | #define OCFS2_IOC_GROUP_EXTEND _IOW('o', 1, int) | |
50 | #define OCFS2_IOC_GROUP_ADD _IOW('o', 2,struct ocfs2_new_group_input) | |
51 | #define OCFS2_IOC_GROUP_ADD64 _IOW('o', 3,struct ocfs2_new_group_input) | |
52 | ||
53 | /* Used to pass 2 file names to reflink. */ | |
54 | struct reflink_arguments { | |
55 | __u64 old_path; | |
56 | __u64 new_path; | |
57 | __u64 preserve; | |
58 | }; | |
59 | #define OCFS2_IOC_REFLINK _IOW('o', 4, struct reflink_arguments) | |
60 | ||
ddee5cdb TY |
61 | /* Following definitions dedicated for ocfs2_info_request ioctls. */ |
62 | #define OCFS2_INFO_MAX_REQUEST (50) | |
63 | #define OCFS2_TEXT_UUID_LEN (OCFS2_VOL_UUID_LEN * 2) | |
64 | ||
65 | /* Magic number of all requests */ | |
66 | #define OCFS2_INFO_MAGIC (0x4F32494E) | |
67 | ||
68 | /* | |
69 | * Always try to separate info request into small pieces to | |
70 | * guarantee the backward&forward compatibility. | |
71 | */ | |
72 | struct ocfs2_info { | |
73 | __u64 oi_requests; /* Array of __u64 pointers to requests */ | |
74 | __u32 oi_count; /* Number of requests in info_requests */ | |
75 | __u32 oi_pad; | |
76 | }; | |
77 | ||
78 | struct ocfs2_info_request { | |
79 | /*00*/ __u32 ir_magic; /* Magic number */ | |
80 | __u32 ir_code; /* Info request code */ | |
81 | __u32 ir_size; /* Size of request */ | |
82 | __u32 ir_flags; /* Request flags */ | |
83 | /*10*/ /* Request specific fields */ | |
84 | }; | |
85 | ||
86 | struct ocfs2_info_clustersize { | |
87 | struct ocfs2_info_request ic_req; | |
88 | __u32 ic_clustersize; | |
89 | __u32 ic_pad; | |
90 | }; | |
91 | ||
92 | struct ocfs2_info_blocksize { | |
93 | struct ocfs2_info_request ib_req; | |
94 | __u32 ib_blocksize; | |
95 | __u32 ib_pad; | |
96 | }; | |
97 | ||
98 | struct ocfs2_info_maxslots { | |
99 | struct ocfs2_info_request im_req; | |
100 | __u32 im_max_slots; | |
101 | __u32 im_pad; | |
102 | }; | |
103 | ||
104 | struct ocfs2_info_label { | |
105 | struct ocfs2_info_request il_req; | |
106 | __u8 il_label[OCFS2_MAX_VOL_LABEL_LEN]; | |
107 | } __attribute__ ((packed)); | |
108 | ||
109 | struct ocfs2_info_uuid { | |
110 | struct ocfs2_info_request iu_req; | |
111 | __u8 iu_uuid_str[OCFS2_TEXT_UUID_LEN + 1]; | |
112 | } __attribute__ ((packed)); | |
113 | ||
114 | struct ocfs2_info_fs_features { | |
115 | struct ocfs2_info_request if_req; | |
116 | __u32 if_compat_features; | |
117 | __u32 if_incompat_features; | |
118 | __u32 if_ro_compat_features; | |
119 | __u32 if_pad; | |
120 | }; | |
121 | ||
122 | struct ocfs2_info_journal_size { | |
123 | struct ocfs2_info_request ij_req; | |
124 | __u64 ij_journal_size; | |
125 | }; | |
126 | ||
3e5db17d TY |
127 | struct ocfs2_info_freeinode { |
128 | struct ocfs2_info_request ifi_req; | |
129 | struct ocfs2_info_local_freeinode { | |
130 | __u64 lfi_total; | |
131 | __u64 lfi_free; | |
132 | } ifi_stat[OCFS2_MAX_SLOTS]; | |
133 | __u32 ifi_slotnum; /* out */ | |
134 | __u32 ifi_pad; | |
135 | }; | |
136 | ||
d24a10b9 TY |
137 | #define OCFS2_INFO_MAX_HIST (32) |
138 | ||
139 | struct ocfs2_info_freefrag { | |
140 | struct ocfs2_info_request iff_req; | |
141 | struct ocfs2_info_freefrag_stats { /* (out) */ | |
142 | struct ocfs2_info_free_chunk_list { | |
143 | __u32 fc_chunks[OCFS2_INFO_MAX_HIST]; | |
144 | __u32 fc_clusters[OCFS2_INFO_MAX_HIST]; | |
145 | } ffs_fc_hist; | |
146 | __u32 ffs_clusters; | |
147 | __u32 ffs_free_clusters; | |
148 | __u32 ffs_free_chunks; | |
149 | __u32 ffs_free_chunks_real; | |
150 | __u32 ffs_min; /* Minimum free chunksize in clusters */ | |
151 | __u32 ffs_max; | |
152 | __u32 ffs_avg; | |
153 | __u32 ffs_pad; | |
154 | } iff_ffs; | |
155 | __u32 iff_chunksize; /* chunksize in clusters(in) */ | |
156 | __u32 iff_pad; | |
157 | }; | |
158 | ||
ddee5cdb TY |
159 | /* Codes for ocfs2_info_request */ |
160 | enum ocfs2_info_type { | |
161 | OCFS2_INFO_CLUSTERSIZE = 1, | |
162 | OCFS2_INFO_BLOCKSIZE, | |
163 | OCFS2_INFO_MAXSLOTS, | |
164 | OCFS2_INFO_LABEL, | |
165 | OCFS2_INFO_UUID, | |
166 | OCFS2_INFO_FS_FEATURES, | |
167 | OCFS2_INFO_JOURNAL_SIZE, | |
3e5db17d | 168 | OCFS2_INFO_FREEINODE, |
d24a10b9 | 169 | OCFS2_INFO_FREEFRAG, |
ddee5cdb TY |
170 | OCFS2_INFO_NUM_TYPES |
171 | }; | |
172 | ||
173 | /* Flags for struct ocfs2_info_request */ | |
174 | /* Filled by the caller */ | |
175 | #define OCFS2_INFO_FL_NON_COHERENT (0x00000001) /* Cluster coherency not | |
176 | required. This is a hint. | |
177 | It is up to ocfs2 whether | |
178 | the request can be fulfilled | |
179 | without locking. */ | |
180 | /* Filled by ocfs2 */ | |
181 | #define OCFS2_INFO_FL_FILLED (0x40000000) /* Filesystem understood | |
182 | this request and | |
183 | filled in the answer */ | |
184 | ||
185 | #define OCFS2_INFO_FL_ERROR (0x80000000) /* Error happened during | |
186 | request handling. */ | |
187 | ||
188 | #define OCFS2_IOC_INFO _IOR('o', 5, struct ocfs2_info) | |
189 | ||
220ebc43 TY |
190 | struct ocfs2_move_extents { |
191 | /* All values are in bytes */ | |
192 | /* in */ | |
193 | __u64 me_start; /* Virtual start in the file to move */ | |
194 | __u64 me_len; /* Length of the extents to be moved */ | |
195 | __u64 me_goal; /* Physical offset of the goal, | |
196 | it's in block unit */ | |
197 | __u64 me_threshold; /* Maximum distance from goal or threshold | |
198 | for auto defragmentation */ | |
199 | __u64 me_flags; /* Flags for the operation: | |
200 | * - auto defragmentation. | |
201 | * - refcount,xattr cases. | |
202 | */ | |
203 | /* out */ | |
204 | __u64 me_moved_len; /* Moved/defraged length */ | |
205 | __u64 me_new_offset; /* Resulting physical location */ | |
206 | __u32 me_reserved[2]; /* Reserved for futhure */ | |
207 | }; | |
208 | ||
209 | #define OCFS2_MOVE_EXT_FL_AUTO_DEFRAG (0x00000001) /* Kernel manages to | |
210 | claim new clusters | |
211 | as the goal place | |
212 | for extents moving */ | |
213 | #define OCFS2_MOVE_EXT_FL_PART_DEFRAG (0x00000002) /* Allow partial extent | |
214 | moving, is to make | |
215 | movement less likely | |
216 | to fail, may make fs | |
217 | even more fragmented */ | |
218 | #define OCFS2_MOVE_EXT_FL_COMPLETE (0x00000004) /* Move or defragmenation | |
219 | completely gets done. | |
220 | */ | |
221 | ||
222 | #define OCFS2_IOC_MOVE_EXT _IOW('o', 6, struct ocfs2_move_extents) | |
223 | ||
9df5778e | 224 | #endif /* OCFS2_IOCTL_H */ |