1 /* -*- mode: c; c-basic-offset: 8; -*-
2 * vim: noexpandtab sw=8 ts=8 sts=0:
6 * Defines OCFS2 ioctls.
8 * Copyright (C) 2010 Oracle. All rights reserved.
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.
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.
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
32 * Space reservation / allocation / free ioctls and argument structure
33 * are designed to be compatible with XFS.
35 * ALLOCSP* and FREESP* are not and will never be supported, but are
36 * included here for completeness.
38 struct ocfs2_space_resv {
42 __s64 l_len; /* len == 0 means until end of file */
45 __s32 l_pad[4]; /* reserve area */
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)
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 */
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)
71 /* Used to pass 2 file names to reflink. */
72 struct reflink_arguments {
77 #define OCFS2_IOC_REFLINK _IOW('o', 4, struct reflink_arguments)
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)
83 /* Magic number of all requests */
84 #define OCFS2_INFO_MAGIC (0x4F32494E)
87 * Always try to separate info request into small pieces to
88 * guarantee the backward&forward compatibility.
91 __u64 oi_requests; /* Array of __u64 pointers to requests */
92 __u32 oi_count; /* Number of requests in info_requests */
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 */
104 struct ocfs2_info_clustersize {
105 struct ocfs2_info_request ic_req;
106 __u32 ic_clustersize;
110 struct ocfs2_info_blocksize {
111 struct ocfs2_info_request ib_req;
116 struct ocfs2_info_maxslots {
117 struct ocfs2_info_request im_req;
122 struct ocfs2_info_label {
123 struct ocfs2_info_request il_req;
124 __u8 il_label[OCFS2_MAX_VOL_LABEL_LEN];
125 } __attribute__ ((packed));
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));
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;
140 struct ocfs2_info_journal_size {
141 struct ocfs2_info_request ij_req;
142 __u64 ij_journal_size;
145 struct ocfs2_info_freeinode {
146 struct ocfs2_info_request ifi_req;
147 struct ocfs2_info_local_freeinode {
150 } ifi_stat[OCFS2_MAX_SLOTS];
151 __u32 ifi_slotnum; /* out */
155 #define OCFS2_INFO_MAX_HIST (32)
157 struct 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];
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 */
173 __u32 iff_chunksize; /* chunksize in clusters(in) */
177 /* Codes for ocfs2_info_request */
178 enum ocfs2_info_type {
179 OCFS2_INFO_CLUSTERSIZE = 1,
180 OCFS2_INFO_BLOCKSIZE,
184 OCFS2_INFO_FS_FEATURES,
185 OCFS2_INFO_JOURNAL_SIZE,
186 OCFS2_INFO_FREEINODE,
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
198 /* Filled by ocfs2 */
199 #define OCFS2_INFO_FL_FILLED (0x40000000) /* Filesystem understood
201 filled in the answer */
203 #define OCFS2_INFO_FL_ERROR (0x80000000) /* Error happened during
206 #define OCFS2_IOC_INFO _IOR('o', 5, struct ocfs2_info)
208 struct ocfs2_move_extents {
209 /* All values are in bytes */
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.
222 __u64 me_moved_len; /* Moved/defraged length */
223 __u64 me_new_offset; /* Resulting physical location */
224 __u32 me_reserved[2]; /* Reserved for futhure */
227 #define OCFS2_MOVE_EXT_FL_AUTO_DEFRAG (0x00000001) /* Kernel manages to
230 for extents moving */
231 #define OCFS2_MOVE_EXT_FL_PART_DEFRAG (0x00000002) /* Allow partial extent
235 even more fragmented */
236 #define OCFS2_MOVE_EXT_FL_COMPLETE (0x00000004) /* Move or defragmenation
237 completely gets done.
240 #define OCFS2_IOC_MOVE_EXT _IOW('o', 6, struct ocfs2_move_extents)
242 #endif /* OCFS2_IOCTL_H */