Gitiles
Code Review Sign In
gerrit.nordix.org / codeaurora / cp-linux / 8d8f6542b666daf5e87de156590e635c2c4da0c0 / . / fs / ocfs2 / ocfs2_ioctl.h
blob: 5b27ff1fa577d95533c0b594349b23f8cc62bd62 [file] [log] [blame]
Kyle Swenson8d8f6542021-03-15 11:02:55 -0600[diff] [blame^]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 */
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
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 */
38struct 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 */
58struct 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. */
72struct 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
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 */
90struct 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
96struct 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
104struct ocfs2_info_clustersize {
105 struct ocfs2_info_request ic_req;
106 __u32 ic_clustersize;
107 __u32 ic_pad;
108};
109
110struct ocfs2_info_blocksize {
111 struct ocfs2_info_request ib_req;
112 __u32 ib_blocksize;
113 __u32 ib_pad;
114};
115
116struct ocfs2_info_maxslots {
117 struct ocfs2_info_request im_req;
118 __u32 im_max_slots;
119 __u32 im_pad;
120};
121
122struct ocfs2_info_label {
123 struct ocfs2_info_request il_req;
124 __u8 il_label[OCFS2_MAX_VOL_LABEL_LEN];
125} __attribute__ ((packed));
126
127struct ocfs2_info_uuid {
128 struct ocfs2_info_request iu_req;
129 __u8 iu_uuid_str[OCFS2_TEXT_UUID_LEN + 1];
130} __attribute__ ((packed));
131
132struct 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
140struct ocfs2_info_journal_size {
141 struct ocfs2_info_request ij_req;
142 __u64 ij_journal_size;
143};
144
145struct ocfs2_info_freeinode {
146 struct ocfs2_info_request ifi_req;
147 struct ocfs2_info_local_freeinode {
148 __u64 lfi_total;
149 __u64 lfi_free;
150 } ifi_stat[OCFS2_MAX_SLOTS];
151 __u32 ifi_slotnum; /* out */
152 __u32 ifi_pad;
153};
154
155#define OCFS2_INFO_MAX_HIST (32)
156
157struct ocfs2_info_freefrag {
158 struct ocfs2_info_request iff_req;
159 struct ocfs2_info_freefrag_stats { /* (out) */
160 struct ocfs2_info_free_chunk_list {
161 __u32 fc_chunks[OCFS2_INFO_MAX_HIST];
162 __u32 fc_clusters[OCFS2_INFO_MAX_HIST];
163 } ffs_fc_hist;
164 __u32 ffs_clusters;
165 __u32 ffs_free_clusters;
166 __u32 ffs_free_chunks;
167 __u32 ffs_free_chunks_real;
168 __u32 ffs_min; /* Minimum free chunksize in clusters */
169 __u32 ffs_max;
170 __u32 ffs_avg;
171 __u32 ffs_pad;
172 } iff_ffs;
173 __u32 iff_chunksize; /* chunksize in clusters(in) */
174 __u32 iff_pad;
175};
176
177/* Codes for ocfs2_info_request */
178enum ocfs2_info_type {
179 OCFS2_INFO_CLUSTERSIZE = 1,
180 OCFS2_INFO_BLOCKSIZE,
181 OCFS2_INFO_MAXSLOTS,
182 OCFS2_INFO_LABEL,
183 OCFS2_INFO_UUID,
184 OCFS2_INFO_FS_FEATURES,
185 OCFS2_INFO_JOURNAL_SIZE,
186 OCFS2_INFO_FREEINODE,
187 OCFS2_INFO_FREEFRAG,
188 OCFS2_INFO_NUM_TYPES
189};
190
191/* Flags for struct ocfs2_info_request */
192/* Filled by the caller */
193#define OCFS2_INFO_FL_NON_COHERENT (0x00000001) /* Cluster coherency not
194 required. This is a hint.
195 It is up to ocfs2 whether
196 the request can be fulfilled
197 without locking. */
198/* Filled by ocfs2 */
199#define OCFS2_INFO_FL_FILLED (0x40000000) /* Filesystem understood
200 this request and
201 filled in the answer */
202
203#define OCFS2_INFO_FL_ERROR (0x80000000) /* Error happened during
204 request handling. */
205
206#define OCFS2_IOC_INFO _IOR('o', 5, struct ocfs2_info)
207
208struct ocfs2_move_extents {
209/* All values are in bytes */
210 /* in */
211 __u64 me_start; /* Virtual start in the file to move */
212 __u64 me_len; /* Length of the extents to be moved */
213 __u64 me_goal; /* Physical offset of the goal,
214 it's in block unit */
215 __u64 me_threshold; /* Maximum distance from goal or threshold
216 for auto defragmentation */
217 __u64 me_flags; /* Flags for the operation:
218 * - auto defragmentation.
219 * - refcount,xattr cases.
220 */
221 /* out */
222 __u64 me_moved_len; /* Moved/defraged length */
223 __u64 me_new_offset; /* Resulting physical location */
224 __u32 me_reserved[2]; /* Reserved for futhure */
225};
226
227#define OCFS2_MOVE_EXT_FL_AUTO_DEFRAG (0x00000001) /* Kernel manages to
228 claim new clusters
229 as the goal place
230 for extents moving */
231#define OCFS2_MOVE_EXT_FL_PART_DEFRAG (0x00000002) /* Allow partial extent
232 moving, is to make
233 movement less likely
234 to fail, may make fs
235 even more fragmented */
236#define OCFS2_MOVE_EXT_FL_COMPLETE (0x00000004) /* Move or defragmenation
237 completely gets done.
238 */
239
240#define OCFS2_IOC_MOVE_EXT _IOW('o', 6, struct ocfs2_move_extents)
241
242#endif /* OCFS2_IOCTL_H */