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11#ifndef __GFS2_ONDISK_DOT_H__
12#define __GFS2_ONDISK_DOT_H__
13
14#include <linux/types.h>
15
16#define GFS2_MAGIC 0x01161970
17#define GFS2_BASIC_BLOCK 512
18#define GFS2_BASIC_BLOCK_SHIFT 9
19
20
21
22#define GFS2_MOUNT_LOCK 0
23#define GFS2_LIVE_LOCK 1
24#define GFS2_FREEZE_LOCK 2
25#define GFS2_RENAME_LOCK 3
26#define GFS2_CONTROL_LOCK 4
27#define GFS2_MOUNTED_LOCK 5
28
29
30
31#define GFS2_FORMAT_NONE 0
32#define GFS2_FORMAT_SB 100
33#define GFS2_FORMAT_RG 200
34#define GFS2_FORMAT_RB 300
35#define GFS2_FORMAT_DI 400
36#define GFS2_FORMAT_IN 500
37#define GFS2_FORMAT_LF 600
38#define GFS2_FORMAT_JD 700
39#define GFS2_FORMAT_LH 800
40#define GFS2_FORMAT_LD 900
41#define GFS2_FORMAT_LB 1000
42#define GFS2_FORMAT_EA 1600
43#define GFS2_FORMAT_ED 1700
44#define GFS2_FORMAT_QC 1400
45
46#define GFS2_FORMAT_RI 1100
47#define GFS2_FORMAT_DE 1200
48#define GFS2_FORMAT_QU 1500
49
50#define GFS2_FORMAT_FS 1801
51#define GFS2_FORMAT_MULTI 1900
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56
57struct gfs2_inum {
58 __be64 no_formal_ino;
59 __be64 no_addr;
60};
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66
67#define GFS2_METATYPE_NONE 0
68#define GFS2_METATYPE_SB 1
69#define GFS2_METATYPE_RG 2
70#define GFS2_METATYPE_RB 3
71#define GFS2_METATYPE_DI 4
72#define GFS2_METATYPE_IN 5
73#define GFS2_METATYPE_LF 6
74#define GFS2_METATYPE_JD 7
75#define GFS2_METATYPE_LH 8
76#define GFS2_METATYPE_LD 9
77#define GFS2_METATYPE_LB 12
78#define GFS2_METATYPE_EA 10
79#define GFS2_METATYPE_ED 11
80#define GFS2_METATYPE_QC 14
81
82struct gfs2_meta_header {
83 __be32 mh_magic;
84 __be32 mh_type;
85 __be64 __pad0;
86 __be32 mh_format;
87
88 union {
89 __be32 mh_jid;
90 __be32 __pad1;
91 };
92};
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103
104#define GFS2_SB_ADDR 128
105
106
107#define GFS2_SB_LOCK 0
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111#define GFS2_LOCKNAME_LEN 64
112
113struct gfs2_sb {
114 struct gfs2_meta_header sb_header;
115
116 __be32 sb_fs_format;
117 __be32 sb_multihost_format;
118 __u32 __pad0;
119
120 __be32 sb_bsize;
121 __be32 sb_bsize_shift;
122 __u32 __pad1;
123
124 struct gfs2_inum sb_master_dir;
125 struct gfs2_inum __pad2;
126 struct gfs2_inum sb_root_dir;
127
128 char sb_lockproto[GFS2_LOCKNAME_LEN];
129 char sb_locktable[GFS2_LOCKNAME_LEN];
130
131 struct gfs2_inum __pad3;
132 struct gfs2_inum __pad4;
133#define GFS2_HAS_UUID 1
134 __u8 sb_uuid[16];
135};
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140
141struct gfs2_rindex {
142 __be64 ri_addr;
143 __be32 ri_length;
144 __u32 __pad;
145
146 __be64 ri_data0;
147 __be32 ri_data;
148
149 __be32 ri_bitbytes;
150
151 __u8 ri_reserved[64];
152};
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158
159#define GFS2_NBBY 4
160#define GFS2_BIT_SIZE 2
161#define GFS2_BIT_MASK 0x00000003
162
163#define GFS2_BLKST_FREE 0
164#define GFS2_BLKST_USED 1
165#define GFS2_BLKST_UNLINKED 2
166#define GFS2_BLKST_DINODE 3
167
168#define GFS2_RGF_JOURNAL 0x00000001
169#define GFS2_RGF_METAONLY 0x00000002
170#define GFS2_RGF_DATAONLY 0x00000004
171#define GFS2_RGF_NOALLOC 0x00000008
172#define GFS2_RGF_TRIMMED 0x00000010
173
174struct gfs2_rgrp_lvb {
175 __be32 rl_magic;
176 __be32 rl_flags;
177 __be32 rl_free;
178 __be32 rl_dinodes;
179 __be64 rl_igeneration;
180 __be32 rl_unlinked;
181 __be32 __pad;
182};
183
184struct gfs2_rgrp {
185 struct gfs2_meta_header rg_header;
186
187 __be32 rg_flags;
188 __be32 rg_free;
189 __be32 rg_dinodes;
190 union {
191 __be32 __pad;
192 __be32 rg_skip;
193 };
194 __be64 rg_igeneration;
195
196
197 __be64 rg_data0;
198 __be32 rg_data;
199 __be32 rg_bitbytes;
200 __be32 rg_crc;
201
202 __u8 rg_reserved[60];
203};
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209struct gfs2_quota {
210 __be64 qu_limit;
211 __be64 qu_warn;
212 __be64 qu_value;
213 __u8 qu_reserved[64];
214};
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220#define GFS2_MAX_META_HEIGHT 10
221#define GFS2_DIR_MAX_DEPTH 17
222
223#define DT2IF(dt) (((dt) << 12) & S_IFMT)
224#define IF2DT(sif) (((sif) & S_IFMT) >> 12)
225
226enum {
227 gfs2fl_Jdata = 0,
228 gfs2fl_ExHash = 1,
229 gfs2fl_Unused = 2,
230 gfs2fl_EaIndirect = 3,
231 gfs2fl_Directio = 4,
232 gfs2fl_Immutable = 5,
233 gfs2fl_AppendOnly = 6,
234 gfs2fl_NoAtime = 7,
235 gfs2fl_Sync = 8,
236 gfs2fl_System = 9,
237 gfs2fl_TopLevel = 10,
238 gfs2fl_TruncInProg = 29,
239 gfs2fl_InheritDirectio = 30,
240 gfs2fl_InheritJdata = 31,
241};
242
243
244#define GFS2_DIF_JDATA 0x00000001
245#define GFS2_DIF_EXHASH 0x00000002
246#define GFS2_DIF_UNUSED 0x00000004
247#define GFS2_DIF_EA_INDIRECT 0x00000008
248#define GFS2_DIF_DIRECTIO 0x00000010
249#define GFS2_DIF_IMMUTABLE 0x00000020
250#define GFS2_DIF_APPENDONLY 0x00000040
251#define GFS2_DIF_NOATIME 0x00000080
252#define GFS2_DIF_SYNC 0x00000100
253#define GFS2_DIF_SYSTEM 0x00000200
254#define GFS2_DIF_TOPDIR 0x00000400
255#define GFS2_DIF_TRUNC_IN_PROG 0x20000000
256#define GFS2_DIF_INHERIT_DIRECTIO 0x40000000
257#define GFS2_DIF_INHERIT_JDATA 0x80000000
258
259struct gfs2_dinode {
260 struct gfs2_meta_header di_header;
261
262 struct gfs2_inum di_num;
263
264 __be32 di_mode;
265 __be32 di_uid;
266 __be32 di_gid;
267 __be32 di_nlink;
268 __be64 di_size;
269 __be64 di_blocks;
270 __be64 di_atime;
271 __be64 di_mtime;
272 __be64 di_ctime;
273 __be32 di_major;
274 __be32 di_minor;
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279 __be64 di_goal_meta;
280 __be64 di_goal_data;
281 __be64 di_generation;
282
283 __be32 di_flags;
284 __be32 di_payload_format;
285 __u16 __pad1;
286 __be16 di_height;
287 __u32 __pad2;
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290 __u16 __pad3;
291 __be16 di_depth;
292 __be32 di_entries;
293
294 struct gfs2_inum __pad4;
295
296 __be64 di_eattr;
297 __be32 di_atime_nsec;
298 __be32 di_mtime_nsec;
299 __be32 di_ctime_nsec;
300
301 __u8 di_reserved[44];
302};
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308#define GFS2_FNAMESIZE 255
309#define GFS2_DIRENT_SIZE(name_len) ((sizeof(struct gfs2_dirent) + (name_len) + 7) & ~7)
310#define GFS2_MIN_DIRENT_SIZE (GFS2_DIRENT_SIZE(1))
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313struct gfs2_dirent {
314 struct gfs2_inum de_inum;
315 __be32 de_hash;
316 __be16 de_rec_len;
317 __be16 de_name_len;
318 __be16 de_type;
319 __be16 de_rahead;
320 union {
321 __u8 __pad[12];
322 struct {
323 __u32 de_cookie;
324 __u8 pad3[8];
325 };
326 };
327};
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333struct gfs2_leaf {
334 struct gfs2_meta_header lf_header;
335
336 __be16 lf_depth;
337 __be16 lf_entries;
338 __be32 lf_dirent_format;
339 __be64 lf_next;
340
341 union {
342 __u8 lf_reserved[64];
343 struct {
344 __be64 lf_inode;
345 __be32 lf_dist;
346 __be32 lf_nsec;
347 __be64 lf_sec;
348 __u8 lf_reserved2[40];
349 };
350 };
351};
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379#define GFS2_EA_MAX_NAME_LEN 255
380#define GFS2_EA_MAX_DATA_LEN 65536
381
382#define GFS2_EATYPE_UNUSED 0
383#define GFS2_EATYPE_USR 1
384#define GFS2_EATYPE_SYS 2
385#define GFS2_EATYPE_SECURITY 3
386
387#define GFS2_EATYPE_LAST 3
388#define GFS2_EATYPE_VALID(x) ((x) <= GFS2_EATYPE_LAST)
389
390#define GFS2_EAFLAG_LAST 0x01
391
392struct gfs2_ea_header {
393 __be32 ea_rec_len;
394 __be32 ea_data_len;
395 __u8 ea_name_len;
396 __u8 ea_type;
397 __u8 ea_flags;
398 __u8 ea_num_ptrs;
399 __u32 __pad;
400};
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406#define GFS2_LOG_HEAD_UNMOUNT 0x00000001
407#define GFS2_LOG_HEAD_FLUSH_NORMAL 0x00000002
408#define GFS2_LOG_HEAD_FLUSH_SYNC 0x00000004
409#define GFS2_LOG_HEAD_FLUSH_SHUTDOWN 0x00000008
410#define GFS2_LOG_HEAD_FLUSH_FREEZE 0x00000010
411#define GFS2_LOG_HEAD_RECOVERY 0x00000020
412#define GFS2_LOG_HEAD_USERSPACE 0x80000000
413
414
415#define GFS2_LFC_SHUTDOWN 0x00000100
416#define GFS2_LFC_JDATA_WPAGES 0x00000200
417#define GFS2_LFC_SET_FLAGS 0x00000400
418#define GFS2_LFC_AIL_EMPTY_GL 0x00000800
419#define GFS2_LFC_AIL_FLUSH 0x00001000
420#define GFS2_LFC_RGRP_GO_SYNC 0x00002000
421#define GFS2_LFC_INODE_GO_SYNC 0x00004000
422#define GFS2_LFC_INODE_GO_INVAL 0x00008000
423#define GFS2_LFC_FREEZE_GO_SYNC 0x00010000
424#define GFS2_LFC_KILL_SB 0x00020000
425#define GFS2_LFC_DO_SYNC 0x00040000
426#define GFS2_LFC_INPLACE_RESERVE 0x00080000
427#define GFS2_LFC_WRITE_INODE 0x00100000
428#define GFS2_LFC_MAKE_FS_RO 0x00200000
429#define GFS2_LFC_SYNC_FS 0x00400000
430#define GFS2_LFC_EVICT_INODE 0x00800000
431#define GFS2_LFC_TRANS_END 0x01000000
432#define GFS2_LFC_LOGD_JFLUSH_REQD 0x02000000
433#define GFS2_LFC_LOGD_AIL_FLUSH_REQD 0x04000000
434
435#define LH_V1_SIZE (offsetofend(struct gfs2_log_header, lh_hash))
436
437struct gfs2_log_header {
438 struct gfs2_meta_header lh_header;
439
440 __be64 lh_sequence;
441 __be32 lh_flags;
442 __be32 lh_tail;
443 __be32 lh_blkno;
444 __be32 lh_hash;
445
446
447 __be32 lh_crc;
448 __be32 lh_nsec;
449 __be64 lh_sec;
450 __be64 lh_addr;
451 __be64 lh_jinode;
452 __be64 lh_statfs_addr;
453 __be64 lh_quota_addr;
454
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456 __be64 lh_local_total;
457 __be64 lh_local_free;
458 __be64 lh_local_dinodes;
459};
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465#define GFS2_LOG_DESC_METADATA 300
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469#define GFS2_LOG_DESC_REVOKE 301
470
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473#define GFS2_LOG_DESC_JDATA 302
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477struct gfs2_log_descriptor {
478 struct gfs2_meta_header ld_header;
479
480 __be32 ld_type;
481 __be32 ld_length;
482 __be32 ld_data1;
483 __be32 ld_data2;
484
485 __u8 ld_reserved[32];
486};
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494#define GFS2_INUM_QUANTUM 1048576
495
496struct gfs2_inum_range {
497 __be64 ir_start;
498 __be64 ir_length;
499};
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507struct gfs2_statfs_change {
508 __be64 sc_total;
509 __be64 sc_free;
510 __be64 sc_dinodes;
511};
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519#define GFS2_QCF_USER 0x00000001
520
521struct gfs2_quota_change {
522 __be64 qc_change;
523 __be32 qc_flags;
524 __be32 qc_id;
525};
526
527struct gfs2_quota_lvb {
528 __be32 qb_magic;
529 __u32 __pad;
530 __be64 qb_limit;
531 __be64 qb_warn;
532 __be64 qb_value;
533};
534
535#endif
536