1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
2 | /* |
3 | * ocfs2_ioctl.h |
4 | * |
5 | * Defines OCFS2 ioctls. |
6 | * |
7 | * Copyright (C) 2010 Oracle. All rights reserved. |
8 | */ |
9 | |
10 | #ifndef OCFS2_IOCTL_H |
11 | #define OCFS2_IOCTL_H |
12 | |
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 | |
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 | |
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 | |
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 | |
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, |
168 | OCFS2_INFO_FREEINODE, |
169 | OCFS2_INFO_FREEFRAG, |
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 | |
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 | |
224 | #endif /* OCFS2_IOCTL_H */ |
225 | |