David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1 | /* |
Steven Whitehouse | feaa7bb | 2006-06-14 15:32:57 -0400 | [diff] [blame] | 2 | * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved. |
| 3 | * Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved. |
| 4 | * |
| 5 | * This copyrighted material is made available to anyone wishing to use, |
| 6 | * modify, copy, or redistribute it subject to the terms and conditions |
| 7 | * of the GNU General Public License v.2. |
| 8 | */ |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 9 | |
| 10 | #ifndef __GFS2_ONDISK_DOT_H__ |
| 11 | #define __GFS2_ONDISK_DOT_H__ |
| 12 | |
Jaswinder Singh Rajput | 237416f | 2009-01-30 21:12:38 +0530 | [diff] [blame] | 13 | #include <linux/types.h> |
| 14 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 15 | #define GFS2_MAGIC 0x01161970 |
| 16 | #define GFS2_BASIC_BLOCK 512 |
| 17 | #define GFS2_BASIC_BLOCK_SHIFT 9 |
| 18 | |
| 19 | /* Lock numbers of the LM_TYPE_NONDISK type */ |
| 20 | |
| 21 | #define GFS2_MOUNT_LOCK 0 |
| 22 | #define GFS2_LIVE_LOCK 1 |
| 23 | #define GFS2_TRANS_LOCK 2 |
| 24 | #define GFS2_RENAME_LOCK 3 |
| 25 | |
| 26 | /* Format numbers for various metadata types */ |
| 27 | |
| 28 | #define GFS2_FORMAT_NONE 0 |
| 29 | #define GFS2_FORMAT_SB 100 |
| 30 | #define GFS2_FORMAT_RG 200 |
| 31 | #define GFS2_FORMAT_RB 300 |
| 32 | #define GFS2_FORMAT_DI 400 |
| 33 | #define GFS2_FORMAT_IN 500 |
| 34 | #define GFS2_FORMAT_LF 600 |
| 35 | #define GFS2_FORMAT_JD 700 |
| 36 | #define GFS2_FORMAT_LH 800 |
| 37 | #define GFS2_FORMAT_LD 900 |
| 38 | #define GFS2_FORMAT_LB 1000 |
Steven Whitehouse | fc69d0d | 2006-02-13 16:21:47 +0000 | [diff] [blame] | 39 | #define GFS2_FORMAT_EA 1600 |
| 40 | #define GFS2_FORMAT_ED 1700 |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 41 | #define GFS2_FORMAT_QC 1400 |
| 42 | /* These are format numbers for entities contained in files */ |
Steven Whitehouse | fc69d0d | 2006-02-13 16:21:47 +0000 | [diff] [blame] | 43 | #define GFS2_FORMAT_RI 1100 |
| 44 | #define GFS2_FORMAT_DE 1200 |
| 45 | #define GFS2_FORMAT_QU 1500 |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 46 | /* These are part of the superblock */ |
| 47 | #define GFS2_FORMAT_FS 1801 |
| 48 | #define GFS2_FORMAT_MULTI 1900 |
| 49 | |
| 50 | /* |
| 51 | * An on-disk inode number |
| 52 | */ |
| 53 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 54 | struct gfs2_inum { |
| 55 | __be64 no_formal_ino; |
| 56 | __be64 no_addr; |
| 57 | }; |
| 58 | |
| 59 | /* |
| 60 | * Generic metadata head structure |
| 61 | * Every inplace buffer logged in the journal must start with this. |
| 62 | */ |
| 63 | |
| 64 | #define GFS2_METATYPE_NONE 0 |
| 65 | #define GFS2_METATYPE_SB 1 |
| 66 | #define GFS2_METATYPE_RG 2 |
| 67 | #define GFS2_METATYPE_RB 3 |
| 68 | #define GFS2_METATYPE_DI 4 |
| 69 | #define GFS2_METATYPE_IN 5 |
| 70 | #define GFS2_METATYPE_LF 6 |
| 71 | #define GFS2_METATYPE_JD 7 |
| 72 | #define GFS2_METATYPE_LH 8 |
| 73 | #define GFS2_METATYPE_LD 9 |
Steven Whitehouse | fc69d0d | 2006-02-13 16:21:47 +0000 | [diff] [blame] | 74 | #define GFS2_METATYPE_LB 12 |
| 75 | #define GFS2_METATYPE_EA 10 |
| 76 | #define GFS2_METATYPE_ED 11 |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 77 | #define GFS2_METATYPE_QC 14 |
| 78 | |
| 79 | struct gfs2_meta_header { |
| 80 | __be32 mh_magic; |
| 81 | __be32 mh_type; |
| 82 | __be64 __pad0; /* Was generation number in gfs1 */ |
| 83 | __be32 mh_format; |
| 84 | __be32 __pad1; /* Was incarnation number in gfs1 */ |
| 85 | }; |
| 86 | |
| 87 | /* |
| 88 | * super-block structure |
| 89 | * |
| 90 | * It's probably good if SIZEOF_SB <= GFS2_BASIC_BLOCK (512 bytes) |
| 91 | * |
| 92 | * Order is important, need to be able to read old superblocks to do on-disk |
| 93 | * version upgrades. |
| 94 | */ |
| 95 | |
| 96 | /* Address of superblock in GFS2 basic blocks */ |
| 97 | #define GFS2_SB_ADDR 128 |
| 98 | |
| 99 | /* The lock number for the superblock (must be zero) */ |
| 100 | #define GFS2_SB_LOCK 0 |
| 101 | |
| 102 | /* Requirement: GFS2_LOCKNAME_LEN % 8 == 0 |
| 103 | Includes: the fencing zero at the end */ |
| 104 | #define GFS2_LOCKNAME_LEN 64 |
| 105 | |
| 106 | struct gfs2_sb { |
| 107 | struct gfs2_meta_header sb_header; |
| 108 | |
| 109 | __be32 sb_fs_format; |
| 110 | __be32 sb_multihost_format; |
| 111 | __u32 __pad0; /* Was superblock flags in gfs1 */ |
| 112 | |
| 113 | __be32 sb_bsize; |
| 114 | __be32 sb_bsize_shift; |
| 115 | __u32 __pad1; /* Was journal segment size in gfs1 */ |
| 116 | |
| 117 | struct gfs2_inum sb_master_dir; /* Was jindex dinode in gfs1 */ |
| 118 | struct gfs2_inum __pad2; /* Was rindex dinode in gfs1 */ |
| 119 | struct gfs2_inum sb_root_dir; |
| 120 | |
| 121 | char sb_lockproto[GFS2_LOCKNAME_LEN]; |
| 122 | char sb_locktable[GFS2_LOCKNAME_LEN]; |
Steven Whitehouse | 6d80c39 | 2008-09-22 07:29:31 +0100 | [diff] [blame] | 123 | |
| 124 | struct gfs2_inum __pad3; /* Was quota inode in gfs1 */ |
| 125 | struct gfs2_inum __pad4; /* Was licence inode in gfs1 */ |
| 126 | #define GFS2_HAS_UUID 1 |
| 127 | __u8 sb_uuid[16]; /* The UUID, maybe 0 for backwards compat */ |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 128 | }; |
| 129 | |
| 130 | /* |
| 131 | * resource index structure |
| 132 | */ |
| 133 | |
| 134 | struct gfs2_rindex { |
| 135 | __be64 ri_addr; /* grp block disk address */ |
| 136 | __be32 ri_length; /* length of rgrp header in fs blocks */ |
| 137 | __u32 __pad; |
| 138 | |
| 139 | __be64 ri_data0; /* first data location */ |
| 140 | __be32 ri_data; /* num of data blocks in rgrp */ |
| 141 | |
| 142 | __be32 ri_bitbytes; /* number of bytes in data bitmaps */ |
| 143 | |
| 144 | __u8 ri_reserved[64]; |
| 145 | }; |
| 146 | |
| 147 | /* |
| 148 | * resource group header structure |
| 149 | */ |
| 150 | |
| 151 | /* Number of blocks per byte in rgrp */ |
| 152 | #define GFS2_NBBY 4 |
| 153 | #define GFS2_BIT_SIZE 2 |
| 154 | #define GFS2_BIT_MASK 0x00000003 |
| 155 | |
| 156 | #define GFS2_BLKST_FREE 0 |
| 157 | #define GFS2_BLKST_USED 1 |
Steven Whitehouse | feaa7bb | 2006-06-14 15:32:57 -0400 | [diff] [blame] | 158 | #define GFS2_BLKST_UNLINKED 2 |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 159 | #define GFS2_BLKST_DINODE 3 |
| 160 | |
| 161 | #define GFS2_RGF_JOURNAL 0x00000001 |
| 162 | #define GFS2_RGF_METAONLY 0x00000002 |
| 163 | #define GFS2_RGF_DATAONLY 0x00000004 |
| 164 | #define GFS2_RGF_NOALLOC 0x00000008 |
| 165 | |
| 166 | struct gfs2_rgrp { |
| 167 | struct gfs2_meta_header rg_header; |
| 168 | |
| 169 | __be32 rg_flags; |
| 170 | __be32 rg_free; |
| 171 | __be32 rg_dinodes; |
Steven Whitehouse | 4340fe6 | 2006-07-11 09:46:33 -0400 | [diff] [blame] | 172 | __be32 __pad; |
| 173 | __be64 rg_igeneration; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 174 | |
Steven Whitehouse | 4340fe6 | 2006-07-11 09:46:33 -0400 | [diff] [blame] | 175 | __u8 rg_reserved[80]; /* Several fields from gfs1 now reserved */ |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 176 | }; |
| 177 | |
| 178 | /* |
Abhijith Das | 2d9a4bb | 2007-08-15 11:25:05 -0500 | [diff] [blame] | 179 | * quota linked list: user quotas and group quotas form two separate |
| 180 | * singly linked lists. ll_next stores uids or gids of next quotas in the |
| 181 | * linked list. |
| 182 | |
| 183 | Given the uid/gid, how to calculate the quota file offsets for the corresponding |
| 184 | gfs2_quota structures on disk: |
| 185 | |
| 186 | for user quotas, given uid, |
| 187 | offset = uid * sizeof(struct gfs2_quota); |
| 188 | |
| 189 | for group quotas, given gid, |
| 190 | offset = (gid * sizeof(struct gfs2_quota)) + sizeof(struct gfs2_quota); |
| 191 | |
| 192 | |
| 193 | uid:0 gid:0 uid:12 gid:12 uid:17 gid:17 uid:5142 gid:5142 |
| 194 | +-------+-------+ +-------+-------+ +-------+- - - -+ +- - - -+-------+ |
| 195 | | valid | valid | :: | valid | valid | :: | valid | inval | :: | inval | valid | |
| 196 | +-------+-------+ +-------+-------+ +-------+- - - -+ +- - - -+-------+ |
| 197 | next:12 next:12 next:17 next:5142 next:NULL next:NULL |
| 198 | | | | | |<-- user quota list | |
| 199 | \______|___________/ \______|___________/ group quota list -->| |
| 200 | | | | |
| 201 | \__________________/ \_______________________________________/ |
| 202 | |
| 203 | */ |
| 204 | |
| 205 | /* |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 206 | * quota structure |
| 207 | */ |
| 208 | |
| 209 | struct gfs2_quota { |
| 210 | __be64 qu_limit; |
| 211 | __be64 qu_warn; |
| 212 | __be64 qu_value; |
Abhijith Das | 2d9a4bb | 2007-08-15 11:25:05 -0500 | [diff] [blame] | 213 | __be32 qu_ll_next; /* location of next quota in list */ |
| 214 | __u8 qu_reserved[60]; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 215 | }; |
| 216 | |
| 217 | /* |
| 218 | * dinode structure |
| 219 | */ |
| 220 | |
| 221 | #define GFS2_MAX_META_HEIGHT 10 |
| 222 | #define GFS2_DIR_MAX_DEPTH 17 |
| 223 | |
| 224 | #define DT2IF(dt) (((dt) << 12) & S_IFMT) |
| 225 | #define IF2DT(sif) (((sif) & S_IFMT) >> 12) |
| 226 | |
Steven Whitehouse | 7ea9ea8 | 2006-03-31 15:01:28 -0500 | [diff] [blame] | 227 | enum { |
| 228 | gfs2fl_Jdata = 0, |
| 229 | gfs2fl_ExHash = 1, |
| 230 | gfs2fl_Unused = 2, |
| 231 | gfs2fl_EaIndirect = 3, |
| 232 | gfs2fl_Directio = 4, |
| 233 | gfs2fl_Immutable = 5, |
| 234 | gfs2fl_AppendOnly = 6, |
| 235 | gfs2fl_NoAtime = 7, |
| 236 | gfs2fl_Sync = 8, |
| 237 | gfs2fl_System = 9, |
| 238 | gfs2fl_TruncInProg = 29, |
| 239 | gfs2fl_InheritDirectio = 30, |
| 240 | gfs2fl_InheritJdata = 31, |
| 241 | }; |
| 242 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 243 | /* Dinode flags */ |
| 244 | #define GFS2_DIF_JDATA 0x00000001 |
| 245 | #define GFS2_DIF_EXHASH 0x00000002 |
| 246 | #define GFS2_DIF_UNUSED 0x00000004 /* only in gfs1 */ |
| 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 /* New in gfs2 */ |
| 254 | #define GFS2_DIF_TRUNC_IN_PROG 0x20000000 /* New in gfs2 */ |
| 255 | #define GFS2_DIF_INHERIT_DIRECTIO 0x40000000 |
| 256 | #define GFS2_DIF_INHERIT_JDATA 0x80000000 |
| 257 | |
| 258 | struct gfs2_dinode { |
| 259 | struct gfs2_meta_header di_header; |
| 260 | |
| 261 | struct gfs2_inum di_num; |
| 262 | |
| 263 | __be32 di_mode; /* mode of file */ |
| 264 | __be32 di_uid; /* owner's user id */ |
| 265 | __be32 di_gid; /* owner's group id */ |
| 266 | __be32 di_nlink; /* number of links to this file */ |
| 267 | __be64 di_size; /* number of bytes in file */ |
| 268 | __be64 di_blocks; /* number of blocks in file */ |
| 269 | __be64 di_atime; /* time last accessed */ |
| 270 | __be64 di_mtime; /* time last modified */ |
| 271 | __be64 di_ctime; /* time last changed */ |
| 272 | __be32 di_major; /* device major number */ |
| 273 | __be32 di_minor; /* device minor number */ |
| 274 | |
| 275 | /* This section varies from gfs1. Padding added to align with |
| 276 | * remainder of dinode |
| 277 | */ |
| 278 | __be64 di_goal_meta; /* rgrp to alloc from next */ |
| 279 | __be64 di_goal_data; /* data block goal */ |
Steven Whitehouse | 4340fe6 | 2006-07-11 09:46:33 -0400 | [diff] [blame] | 280 | __be64 di_generation; /* generation number for NFS */ |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 281 | |
| 282 | __be32 di_flags; /* GFS2_DIF_... */ |
| 283 | __be32 di_payload_format; /* GFS2_FORMAT_... */ |
| 284 | __u16 __pad1; /* Was ditype in gfs1 */ |
| 285 | __be16 di_height; /* height of metadata */ |
| 286 | __u32 __pad2; /* Unused incarnation number from gfs1 */ |
| 287 | |
| 288 | /* These only apply to directories */ |
| 289 | __u16 __pad3; /* Padding */ |
| 290 | __be16 di_depth; /* Number of bits in the table */ |
| 291 | __be32 di_entries; /* The number of entries in the directory */ |
| 292 | |
| 293 | struct gfs2_inum __pad4; /* Unused even in current gfs1 */ |
| 294 | |
| 295 | __be64 di_eattr; /* extended attribute block number */ |
Steven Whitehouse | 4bd91ba | 2007-06-05 09:39:18 +0100 | [diff] [blame] | 296 | __be32 di_atime_nsec; /* nsec portion of atime */ |
| 297 | __be32 di_mtime_nsec; /* nsec portion of mtime */ |
| 298 | __be32 di_ctime_nsec; /* nsec portion of ctime */ |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 299 | |
Steven Whitehouse | 4bd91ba | 2007-06-05 09:39:18 +0100 | [diff] [blame] | 300 | __u8 di_reserved[44]; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 301 | }; |
| 302 | |
| 303 | /* |
| 304 | * directory structure - many of these per directory file |
| 305 | */ |
| 306 | |
| 307 | #define GFS2_FNAMESIZE 255 |
| 308 | #define GFS2_DIRENT_SIZE(name_len) ((sizeof(struct gfs2_dirent) + (name_len) + 7) & ~7) |
| 309 | |
| 310 | struct gfs2_dirent { |
| 311 | struct gfs2_inum de_inum; |
| 312 | __be32 de_hash; |
Steven Whitehouse | fc69d0d | 2006-02-13 16:21:47 +0000 | [diff] [blame] | 313 | __be16 de_rec_len; |
| 314 | __be16 de_name_len; |
| 315 | __be16 de_type; |
| 316 | __u8 __pad[14]; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 317 | }; |
| 318 | |
| 319 | /* |
| 320 | * Header of leaf directory nodes |
| 321 | */ |
| 322 | |
| 323 | struct gfs2_leaf { |
| 324 | struct gfs2_meta_header lf_header; |
| 325 | |
| 326 | __be16 lf_depth; /* Depth of leaf */ |
| 327 | __be16 lf_entries; /* Number of dirents in leaf */ |
| 328 | __be32 lf_dirent_format; /* Format of the dirents */ |
| 329 | __be64 lf_next; /* Next leaf, if overflow */ |
| 330 | |
Steven Whitehouse | fc69d0d | 2006-02-13 16:21:47 +0000 | [diff] [blame] | 331 | __u8 lf_reserved[64]; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 332 | }; |
| 333 | |
| 334 | /* |
| 335 | * Extended attribute header format |
Steven Whitehouse | b6ed2e0 | 2009-08-25 13:44:04 +0100 | [diff] [blame] | 336 | * |
| 337 | * This works in a similar way to dirents. There is a fixed size header |
| 338 | * followed by a variable length section made up of the name and the |
| 339 | * associated data. In the case of a "stuffed" entry, the value is |
| 340 | * inline directly after the name, the ea_num_ptrs entry will be |
| 341 | * zero in that case. For non-"stuffed" entries, there will be |
| 342 | * a set of pointers (aligned to 8 byte boundary) to the block(s) |
| 343 | * containing the value. |
| 344 | * |
| 345 | * The blocks containing the values and the blocks containing the |
| 346 | * extended attribute headers themselves all start with the common |
| 347 | * metadata header. Each inode, if it has extended attributes, will |
| 348 | * have either a single block containing the extended attribute headers |
| 349 | * or a single indirect block pointing to blocks containing the |
| 350 | * extended attribure headers. |
| 351 | * |
| 352 | * The maximim size of the data part of an extended attribute is 64k |
| 353 | * so the number of blocks required depends upon block size. Since the |
| 354 | * block size also determines the number of pointers in an indirect |
| 355 | * block, its a fairly complicated calculation to work out the maximum |
| 356 | * number of blocks that an inode may have relating to extended attributes. |
| 357 | * |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 358 | */ |
| 359 | |
| 360 | #define GFS2_EA_MAX_NAME_LEN 255 |
| 361 | #define GFS2_EA_MAX_DATA_LEN 65536 |
| 362 | |
| 363 | #define GFS2_EATYPE_UNUSED 0 |
| 364 | #define GFS2_EATYPE_USR 1 |
| 365 | #define GFS2_EATYPE_SYS 2 |
Ryan O'Hara | 639b6d7 | 2006-05-22 10:08:35 -0400 | [diff] [blame] | 366 | #define GFS2_EATYPE_SECURITY 3 |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 367 | |
Ryan O'Hara | 639b6d7 | 2006-05-22 10:08:35 -0400 | [diff] [blame] | 368 | #define GFS2_EATYPE_LAST 3 |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 369 | #define GFS2_EATYPE_VALID(x) ((x) <= GFS2_EATYPE_LAST) |
| 370 | |
| 371 | #define GFS2_EAFLAG_LAST 0x01 /* last ea in block */ |
| 372 | |
| 373 | struct gfs2_ea_header { |
| 374 | __be32 ea_rec_len; |
| 375 | __be32 ea_data_len; |
| 376 | __u8 ea_name_len; /* no NULL pointer after the string */ |
| 377 | __u8 ea_type; /* GFS2_EATYPE_... */ |
| 378 | __u8 ea_flags; /* GFS2_EAFLAG_... */ |
| 379 | __u8 ea_num_ptrs; |
| 380 | __u32 __pad; |
| 381 | }; |
| 382 | |
| 383 | /* |
| 384 | * Log header structure |
| 385 | */ |
| 386 | |
| 387 | #define GFS2_LOG_HEAD_UNMOUNT 0x00000001 /* log is clean */ |
| 388 | |
| 389 | struct gfs2_log_header { |
| 390 | struct gfs2_meta_header lh_header; |
| 391 | |
| 392 | __be64 lh_sequence; /* Sequence number of this transaction */ |
| 393 | __be32 lh_flags; /* GFS2_LOG_HEAD_... */ |
| 394 | __be32 lh_tail; /* Block number of log tail */ |
| 395 | __be32 lh_blkno; |
| 396 | __be32 lh_hash; |
| 397 | }; |
| 398 | |
| 399 | /* |
| 400 | * Log type descriptor |
| 401 | */ |
| 402 | |
| 403 | #define GFS2_LOG_DESC_METADATA 300 |
| 404 | /* ld_data1 is the number of metadata blocks in the descriptor. |
| 405 | ld_data2 is unused. */ |
| 406 | |
| 407 | #define GFS2_LOG_DESC_REVOKE 301 |
| 408 | /* ld_data1 is the number of revoke blocks in the descriptor. |
| 409 | ld_data2 is unused. */ |
| 410 | |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 411 | #define GFS2_LOG_DESC_JDATA 302 |
| 412 | /* ld_data1 is the number of data blocks in the descriptor. |
| 413 | ld_data2 is unused. */ |
| 414 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 415 | struct gfs2_log_descriptor { |
| 416 | struct gfs2_meta_header ld_header; |
| 417 | |
| 418 | __be32 ld_type; /* GFS2_LOG_DESC_... */ |
| 419 | __be32 ld_length; /* Number of buffers in this chunk */ |
| 420 | __be32 ld_data1; /* descriptor-specific field */ |
| 421 | __be32 ld_data2; /* descriptor-specific field */ |
| 422 | |
| 423 | __u8 ld_reserved[32]; |
| 424 | }; |
| 425 | |
| 426 | /* |
| 427 | * Inum Range |
| 428 | * Describe a range of formal inode numbers allocated to |
| 429 | * one machine to assign to inodes. |
| 430 | */ |
| 431 | |
| 432 | #define GFS2_INUM_QUANTUM 1048576 |
| 433 | |
| 434 | struct gfs2_inum_range { |
| 435 | __be64 ir_start; |
| 436 | __be64 ir_length; |
| 437 | }; |
| 438 | |
| 439 | /* |
| 440 | * Statfs change |
| 441 | * Describes an change to the pool of free and allocated |
| 442 | * blocks. |
| 443 | */ |
| 444 | |
| 445 | struct gfs2_statfs_change { |
| 446 | __be64 sc_total; |
| 447 | __be64 sc_free; |
| 448 | __be64 sc_dinodes; |
| 449 | }; |
| 450 | |
| 451 | /* |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 452 | * Quota change |
| 453 | * Describes an allocation change for a particular |
| 454 | * user or group. |
| 455 | */ |
| 456 | |
| 457 | #define GFS2_QCF_USER 0x00000001 |
| 458 | |
| 459 | struct gfs2_quota_change { |
| 460 | __be64 qc_change; |
| 461 | __be32 qc_flags; /* GFS2_QCF_... */ |
| 462 | __be32 qc_id; |
| 463 | }; |
| 464 | |
Abhijith Das | 2a87ab0 | 2007-05-16 17:02:19 -0500 | [diff] [blame] | 465 | struct gfs2_quota_lvb { |
| 466 | __be32 qb_magic; |
Fabio Massimo Di Nitto | 518bbde | 2007-05-22 09:00:24 +0200 | [diff] [blame] | 467 | __u32 __pad; |
Abhijith Das | 2a87ab0 | 2007-05-16 17:02:19 -0500 | [diff] [blame] | 468 | __be64 qb_limit; /* Hard limit of # blocks to alloc */ |
| 469 | __be64 qb_warn; /* Warn user when alloc is above this # */ |
| 470 | __be64 qb_value; /* Current # blocks allocated */ |
| 471 | }; |
| 472 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 473 | #endif /* __GFS2_ONDISK_DOT_H__ */ |