1/* 2 * linux/include/linux/ufs_fs.h 3 * 4 * Copyright (C) 1996 5 * Adrian Rodriguez (adrian@franklins-tower.rutgers.edu) 6 * Laboratory for Computer Science Research Computing Facility 7 * Rutgers, The State University of New Jersey 8 * 9 * Clean swab support by Fare <fare@tunes.org> 10 * just hope no one is using NNUUXXI on __?64 structure elements 11 * 64-bit clean thanks to Maciej W. Rozycki <macro@ds2.pg.gda.pl> 12 * 13 * 4.4BSD (FreeBSD) support added on February 1st 1998 by 14 * Niels Kristian Bech Jensen <nkbj@image.dk> partially based 15 * on code by Martin von Loewis <martin@mira.isdn.cs.tu-berlin.de>. 16 * 17 * NeXTstep support added on February 5th 1998 by 18 * Niels Kristian Bech Jensen <nkbj@image.dk>. 19 * 20 * Write support by Daniel Pirkl <daniel.pirkl@email.cz> 21 * 22 * HP/UX hfs filesystem support added by 23 * Martin K. Petersen <mkp@mkp.net>, August 1999 24 * 25 * UFS2 (of FreeBSD 5.x) support added by 26 * Niraj Kumar <niraj17@iitbombay.org> , Jan 2004 27 * 28 */ 29 30#ifndef __LINUX_UFS_FS_H 31#define __LINUX_UFS_FS_H 32 33#include <linux/types.h> 34#include <linux/kernel.h> 35#include <linux/stat.h> 36#include <linux/fs.h> 37 38#include <asm/div64.h> 39typedef __u64 __bitwise __fs64; 40typedef __u32 __bitwise __fs32; 41typedef __u16 __bitwise __fs16; 42 43#define UFS_BBLOCK 0 44#define UFS_BBSIZE 8192 45#define UFS_SBLOCK 8192 46#define UFS_SBSIZE 8192 47 48#define UFS_SECTOR_SIZE 512 49#define UFS_SECTOR_BITS 9 50#define UFS_MAGIC 0x00011954 51#define UFS_MAGIC_BW 0x0f242697 52#define UFS2_MAGIC 0x19540119 53#define UFS_CIGAM 0x54190100 /* byteswapped MAGIC */ 54 55/* Copied from FreeBSD */ 56/* 57 * Each disk drive contains some number of filesystems. 58 * A filesystem consists of a number of cylinder groups. 59 * Each cylinder group has inodes and data. 60 * 61 * A filesystem is described by its super-block, which in turn 62 * describes the cylinder groups. The super-block is critical 63 * data and is replicated in each cylinder group to protect against 64 * catastrophic loss. This is done at `newfs' time and the critical 65 * super-block data does not change, so the copies need not be 66 * referenced further unless disaster strikes. 67 * 68 * For filesystem fs, the offsets of the various blocks of interest 69 * are given in the super block as: 70 * [fs->fs_sblkno] Super-block 71 * [fs->fs_cblkno] Cylinder group block 72 * [fs->fs_iblkno] Inode blocks 73 * [fs->fs_dblkno] Data blocks 74 * The beginning of cylinder group cg in fs, is given by 75 * the ``cgbase(fs, cg)'' macro. 76 * 77 * Depending on the architecture and the media, the superblock may 78 * reside in any one of four places. For tiny media where every block 79 * counts, it is placed at the very front of the partition. Historically, 80 * UFS1 placed it 8K from the front to leave room for the disk label and 81 * a small bootstrap. For UFS2 it got moved to 64K from the front to leave 82 * room for the disk label and a bigger bootstrap, and for really piggy 83 * systems we check at 256K from the front if the first three fail. In 84 * all cases the size of the superblock will be SBLOCKSIZE. All values are 85 * given in byte-offset form, so they do not imply a sector size. The 86 * SBLOCKSEARCH specifies the order in which the locations should be searched. 87 */ 88#define SBLOCK_FLOPPY 0 89#define SBLOCK_UFS1 8192 90#define SBLOCK_UFS2 65536 91#define SBLOCK_PIGGY 262144 92#define SBLOCKSIZE 8192 93#define SBLOCKSEARCH \ 94 { SBLOCK_UFS2, SBLOCK_UFS1, SBLOCK_FLOPPY, SBLOCK_PIGGY, -1 } 95 96 97/* HP specific MAGIC values */ 98 99#define UFS_MAGIC_LFN 0x00095014 /* fs supports filenames > 14 chars */ 100#define UFS_CIGAM_LFN 0x14500900 /* srahc 41 < semanelif stroppus sf */ 101 102#define UFS_MAGIC_SEC 0x00612195 /* B1 security fs */ 103#define UFS_CIGAM_SEC 0x95216100 104 105#define UFS_MAGIC_FEA 0x00195612 /* fs_featurebits supported */ 106#define UFS_CIGAM_FEA 0x12561900 107 108#define UFS_MAGIC_4GB 0x05231994 /* fs > 4 GB && fs_featurebits */ 109#define UFS_CIGAM_4GB 0x94192305 110 111/* Seems somebody at HP goofed here. B1 and lfs are both 0x2 !?! */ 112#define UFS_FSF_LFN 0x00000001 /* long file names */ 113#define UFS_FSF_B1 0x00000002 /* B1 security */ 114#define UFS_FSF_LFS 0x00000002 /* large files */ 115#define UFS_FSF_LUID 0x00000004 /* large UIDs */ 116 117/* End of HP stuff */ 118 119 120#define UFS_BSIZE 8192 121#define UFS_MINBSIZE 4096 122#define UFS_FSIZE 1024 123#define UFS_MAXFRAG (UFS_BSIZE / UFS_FSIZE) 124 125#define UFS_NDADDR 12 126#define UFS_NINDIR 3 127 128#define UFS_IND_BLOCK (UFS_NDADDR + 0) 129#define UFS_DIND_BLOCK (UFS_NDADDR + 1) 130#define UFS_TIND_BLOCK (UFS_NDADDR + 2) 131 132#define UFS_NDIR_FRAGMENT (UFS_NDADDR << uspi->s_fpbshift) 133#define UFS_IND_FRAGMENT (UFS_IND_BLOCK << uspi->s_fpbshift) 134#define UFS_DIND_FRAGMENT (UFS_DIND_BLOCK << uspi->s_fpbshift) 135#define UFS_TIND_FRAGMENT (UFS_TIND_BLOCK << uspi->s_fpbshift) 136 137#define UFS_ROOTINO 2 138#define UFS_FIRST_INO (UFS_ROOTINO + 1) 139 140#define UFS_USEEFT ((__u16)65535) 141 142/* fs_clean values */ 143#define UFS_FSOK 0x7c269d38 144#define UFS_FSACTIVE ((__s8)0x00) 145#define UFS_FSCLEAN ((__s8)0x01) 146#define UFS_FSSTABLE ((__s8)0x02) 147#define UFS_FSOSF1 ((__s8)0x03) /* is this correct for DEC OSF/1? */ 148#define UFS_FSBAD ((__s8)0xff) 149 150/* Solaris-specific fs_clean values */ 151#define UFS_FSSUSPEND ((__s8)0xfe) /* temporarily suspended */ 152#define UFS_FSLOG ((__s8)0xfd) /* logging fs */ 153#define UFS_FSFIX ((__s8)0xfc) /* being repaired while mounted */ 154 155/* From here to next blank line, s_flags for ufs_sb_info */ 156/* directory entry encoding */ 157#define UFS_DE_MASK 0x00000010 /* mask for the following */ 158#define UFS_DE_OLD 0x00000000 159#define UFS_DE_44BSD 0x00000010 160/* uid encoding */ 161#define UFS_UID_MASK 0x00000060 /* mask for the following */ 162#define UFS_UID_OLD 0x00000000 163#define UFS_UID_44BSD 0x00000020 164#define UFS_UID_EFT 0x00000040 165/* superblock state encoding */ 166#define UFS_ST_MASK 0x00000700 /* mask for the following */ 167#define UFS_ST_OLD 0x00000000 168#define UFS_ST_44BSD 0x00000100 169#define UFS_ST_SUN 0x00000200 /* Solaris */ 170#define UFS_ST_SUNOS 0x00000300 171#define UFS_ST_SUNx86 0x00000400 /* Solaris x86 */ 172/*cylinder group encoding */ 173#define UFS_CG_MASK 0x00003000 /* mask for the following */ 174#define UFS_CG_OLD 0x00000000 175#define UFS_CG_44BSD 0x00002000 176#define UFS_CG_SUN 0x00001000 177/* filesystem type encoding */ 178#define UFS_TYPE_MASK 0x00010000 /* mask for the following */ 179#define UFS_TYPE_UFS1 0x00000000 180#define UFS_TYPE_UFS2 0x00010000 181 182 183/* fs_inodefmt options */ 184#define UFS_42INODEFMT -1 185#define UFS_44INODEFMT 2 186 187/* 188 * MINFREE gives the minimum acceptable percentage of file system 189 * blocks which may be free. If the freelist drops below this level 190 * only the superuser may continue to allocate blocks. This may 191 * be set to 0 if no reserve of free blocks is deemed necessary, 192 * however throughput drops by fifty percent if the file system 193 * is run at between 95% and 100% full; thus the minimum default 194 * value of fs_minfree is 5%. However, to get good clustering 195 * performance, 10% is a better choice. hence we use 10% as our 196 * default value. With 10% free space, fragmentation is not a 197 * problem, so we choose to optimize for time. 198 */ 199#define UFS_MINFREE 5 200#define UFS_DEFAULTOPT UFS_OPTTIME 201 202/* 203 * Turn file system block numbers into disk block addresses. 204 * This maps file system blocks to device size blocks. 205 */ 206#define ufs_fsbtodb(uspi, b) ((b) << (uspi)->s_fsbtodb) 207#define ufs_dbtofsb(uspi, b) ((b) >> (uspi)->s_fsbtodb) 208 209/* 210 * Cylinder group macros to locate things in cylinder groups. 211 * They calc file system addresses of cylinder group data structures. 212 */ 213#define ufs_cgbase(c) (uspi->s_fpg * (c)) 214#define ufs_cgstart(c) ((uspi)->fs_magic == UFS2_MAGIC ? ufs_cgbase(c) : \ 215 (ufs_cgbase(c) + uspi->s_cgoffset * ((c) & ~uspi->s_cgmask))) 216#define ufs_cgsblock(c) (ufs_cgstart(c) + uspi->s_sblkno) /* super blk */ 217#define ufs_cgcmin(c) (ufs_cgstart(c) + uspi->s_cblkno) /* cg block */ 218#define ufs_cgimin(c) (ufs_cgstart(c) + uspi->s_iblkno) /* inode blk */ 219#define ufs_cgdmin(c) (ufs_cgstart(c) + uspi->s_dblkno) /* 1st data */ 220 221/* 222 * Macros for handling inode numbers: 223 * inode number to file system block offset. 224 * inode number to cylinder group number. 225 * inode number to file system block address. 226 */ 227#define ufs_inotocg(x) ((x) / uspi->s_ipg) 228#define ufs_inotocgoff(x) ((x) % uspi->s_ipg) 229#define ufs_inotofsba(x) (((u64)ufs_cgimin(ufs_inotocg(x))) + ufs_inotocgoff(x) / uspi->s_inopf) 230#define ufs_inotofsbo(x) ((x) % uspi->s_inopf) 231 232/* 233 * Compute the cylinder and rotational position of a cyl block addr. 234 */ 235#define ufs_cbtocylno(bno) \ 236 ((bno) * uspi->s_nspf / uspi->s_spc) 237#define ufs_cbtorpos(bno) \ 238 ((UFS_SB(sb)->s_flags & UFS_CG_SUN) ? \ 239 (((((bno) * uspi->s_nspf % uspi->s_spc) % \ 240 uspi->s_nsect) * \ 241 uspi->s_nrpos) / uspi->s_nsect) \ 242 : \ 243 ((((bno) * uspi->s_nspf % uspi->s_spc / uspi->s_nsect \ 244 * uspi->s_trackskew + (bno) * uspi->s_nspf % uspi->s_spc \ 245 % uspi->s_nsect * uspi->s_interleave) % uspi->s_nsect \ 246 * uspi->s_nrpos) / uspi->s_npsect)) 247 248/* 249 * The following macros optimize certain frequently calculated 250 * quantities by using shifts and masks in place of divisions 251 * modulos and multiplications. 252 */ 253#define ufs_blkoff(loc) ((loc) & uspi->s_qbmask) 254#define ufs_fragoff(loc) ((loc) & uspi->s_qfmask) 255#define ufs_lblktosize(blk) ((blk) << uspi->s_bshift) 256#define ufs_lblkno(loc) ((loc) >> uspi->s_bshift) 257#define ufs_numfrags(loc) ((loc) >> uspi->s_fshift) 258#define ufs_blkroundup(size) (((size) + uspi->s_qbmask) & uspi->s_bmask) 259#define ufs_fragroundup(size) (((size) + uspi->s_qfmask) & uspi->s_fmask) 260#define ufs_fragstoblks(frags) ((frags) >> uspi->s_fpbshift) 261#define ufs_blkstofrags(blks) ((blks) << uspi->s_fpbshift) 262#define ufs_fragnum(fsb) ((fsb) & uspi->s_fpbmask) 263#define ufs_blknum(fsb) ((fsb) & ~uspi->s_fpbmask) 264 265#define UFS_MAXNAMLEN 255 266#define UFS_MAXMNTLEN 512 267#define UFS2_MAXMNTLEN 468 268#define UFS2_MAXVOLLEN 32 269#define UFS_MAXCSBUFS 31 270#define UFS_LINK_MAX 32000 271/* 272#define UFS2_NOCSPTRS ((128 / sizeof(void *)) - 4) 273*/ 274#define UFS2_NOCSPTRS 28 275 276/* 277 * UFS_DIR_PAD defines the directory entries boundaries 278 * (must be a multiple of 4) 279 */ 280#define UFS_DIR_PAD 4 281#define UFS_DIR_ROUND (UFS_DIR_PAD - 1) 282#define UFS_DIR_REC_LEN(name_len) (((name_len) + 1 + 8 + UFS_DIR_ROUND) & ~UFS_DIR_ROUND) 283 284struct ufs_timeval { 285 __fs32 tv_sec; 286 __fs32 tv_usec; 287}; 288 289struct ufs_dir_entry { 290 __fs32 d_ino; /* inode number of this entry */ 291 __fs16 d_reclen; /* length of this entry */ 292 union { 293 __fs16 d_namlen; /* actual length of d_name */ 294 struct { 295 __u8 d_type; /* file type */ 296 __u8 d_namlen; /* length of string in d_name */ 297 } d_44; 298 } d_u; 299 __u8 d_name[UFS_MAXNAMLEN + 1]; /* file name */ 300}; 301 302struct ufs_csum { 303 __fs32 cs_ndir; /* number of directories */ 304 __fs32 cs_nbfree; /* number of free blocks */ 305 __fs32 cs_nifree; /* number of free inodes */ 306 __fs32 cs_nffree; /* number of free frags */ 307}; 308struct ufs2_csum_total { 309 __fs64 cs_ndir; /* number of directories */ 310 __fs64 cs_nbfree; /* number of free blocks */ 311 __fs64 cs_nifree; /* number of free inodes */ 312 __fs64 cs_nffree; /* number of free frags */ 313 __fs64 cs_numclusters; /* number of free clusters */ 314 __fs64 cs_spare[3]; /* future expansion */ 315}; 316 317struct ufs_csum_core { 318 __u64 cs_ndir; /* number of directories */ 319 __u64 cs_nbfree; /* number of free blocks */ 320 __u64 cs_nifree; /* number of free inodes */ 321 __u64 cs_nffree; /* number of free frags */ 322 __u64 cs_numclusters; /* number of free clusters */ 323}; 324 325/* 326 * File system flags 327 */ 328#define UFS_UNCLEAN 0x01 /* file system not clean at mount (unused) */ 329#define UFS_DOSOFTDEP 0x02 /* file system using soft dependencies */ 330#define UFS_NEEDSFSCK 0x04 /* needs sync fsck (FreeBSD compat, unused) */ 331#define UFS_INDEXDIRS 0x08 /* kernel supports indexed directories */ 332#define UFS_ACLS 0x10 /* file system has ACLs enabled */ 333#define UFS_MULTILABEL 0x20 /* file system is MAC multi-label */ 334#define UFS_FLAGS_UPDATED 0x80 /* flags have been moved to new location */ 335 336 337/* 338 * Preference for optimization. 339 */ 340#define UFS_OPTTIME 0 /* minimize allocation time */ 341#define UFS_OPTSPACE 1 /* minimize disk fragmentation */ 342 343/* 344 * Rotational layout table format types 345 */ 346#define UFS_42POSTBLFMT -1 /* 4.2BSD rotational table format */ 347#define UFS_DYNAMICPOSTBLFMT 1 /* dynamic rotational table format */ 348 349/* 350 * Convert cylinder group to base address of its global summary info. 351 */ 352#define fs_cs(indx) s_csp[(indx)] 353 354/* 355 * Cylinder group block for a file system. 356 * 357 * Writable fields in the cylinder group are protected by the associated 358 * super block lock fs->fs_lock. 359 */ 360#define CG_MAGIC 0x090255 361#define ufs_cg_chkmagic(sb, ucg) \ 362 (fs32_to_cpu((sb), (ucg)->cg_magic) == CG_MAGIC) 363/* 364 * Macros for access to old cylinder group array structures 365 */ 366#define ufs_ocg_blktot(sb, ucg) fs32_to_cpu((sb), ((struct ufs_old_cylinder_group *)(ucg))->cg_btot) 367#define ufs_ocg_blks(sb, ucg, cylno) fs32_to_cpu((sb), ((struct ufs_old_cylinder_group *)(ucg))->cg_b[cylno]) 368#define ufs_ocg_inosused(sb, ucg) fs32_to_cpu((sb), ((struct ufs_old_cylinder_group *)(ucg))->cg_iused) 369#define ufs_ocg_blksfree(sb, ucg) fs32_to_cpu((sb), ((struct ufs_old_cylinder_group *)(ucg))->cg_free) 370#define ufs_ocg_chkmagic(sb, ucg) \ 371 (fs32_to_cpu((sb), ((struct ufs_old_cylinder_group *)(ucg))->cg_magic) == CG_MAGIC) 372 373/* 374 * size of this structure is 172 B 375 */ 376struct ufs_cylinder_group { 377 __fs32 cg_link; /* linked list of cyl groups */ 378 __fs32 cg_magic; /* magic number */ 379 __fs32 cg_time; /* time last written */ 380 __fs32 cg_cgx; /* we are the cgx'th cylinder group */ 381 __fs16 cg_ncyl; /* number of cyl's this cg */ 382 __fs16 cg_niblk; /* number of inode blocks this cg */ 383 __fs32 cg_ndblk; /* number of data blocks this cg */ 384 struct ufs_csum cg_cs; /* cylinder summary information */ 385 __fs32 cg_rotor; /* position of last used block */ 386 __fs32 cg_frotor; /* position of last used frag */ 387 __fs32 cg_irotor; /* position of last used inode */ 388 __fs32 cg_frsum[UFS_MAXFRAG]; /* counts of available frags */ 389 __fs32 cg_btotoff; /* (__u32) block totals per cylinder */ 390 __fs32 cg_boff; /* (short) free block positions */ 391 __fs32 cg_iusedoff; /* (char) used inode map */ 392 __fs32 cg_freeoff; /* (u_char) free block map */ 393 __fs32 cg_nextfreeoff; /* (u_char) next available space */ 394 union { 395 struct { 396 __fs32 cg_clustersumoff; /* (u_int32) counts of avail clusters */ 397 __fs32 cg_clusteroff; /* (u_int8) free cluster map */ 398 __fs32 cg_nclusterblks; /* number of clusters this cg */ 399 __fs32 cg_sparecon[13]; /* reserved for future use */ 400 } cg_44; 401 struct { 402 __fs32 cg_clustersumoff;/* (u_int32) counts of avail clusters */ 403 __fs32 cg_clusteroff; /* (u_int8) free cluster map */ 404 __fs32 cg_nclusterblks;/* number of clusters this cg */ 405 __fs32 cg_niblk; /* number of inode blocks this cg */ 406 __fs32 cg_initediblk; /* last initialized inode */ 407 __fs32 cg_sparecon32[3];/* reserved for future use */ 408 __fs64 cg_time; /* time last written */ 409 __fs64 cg_sparecon[3]; /* reserved for future use */ 410 } cg_u2; 411 __fs32 cg_sparecon[16]; /* reserved for future use */ 412 } cg_u; 413 __u8 cg_space[1]; /* space for cylinder group maps */ 414/* actually longer */ 415}; 416 417/* Historic Cylinder group info */ 418struct ufs_old_cylinder_group { 419 __fs32 cg_link; /* linked list of cyl groups */ 420 __fs32 cg_rlink; /* for incore cyl groups */ 421 __fs32 cg_time; /* time last written */ 422 __fs32 cg_cgx; /* we are the cgx'th cylinder group */ 423 __fs16 cg_ncyl; /* number of cyl's this cg */ 424 __fs16 cg_niblk; /* number of inode blocks this cg */ 425 __fs32 cg_ndblk; /* number of data blocks this cg */ 426 struct ufs_csum cg_cs; /* cylinder summary information */ 427 __fs32 cg_rotor; /* position of last used block */ 428 __fs32 cg_frotor; /* position of last used frag */ 429 __fs32 cg_irotor; /* position of last used inode */ 430 __fs32 cg_frsum[8]; /* counts of available frags */ 431 __fs32 cg_btot[32]; /* block totals per cylinder */ 432 __fs16 cg_b[32][8]; /* positions of free blocks */ 433 __u8 cg_iused[256]; /* used inode map */ 434 __fs32 cg_magic; /* magic number */ 435 __u8 cg_free[1]; /* free block map */ 436/* actually longer */ 437}; 438 439/* 440 * structure of an on-disk inode 441 */ 442struct ufs_inode { 443 __fs16 ui_mode; /* 0x0 */ 444 __fs16 ui_nlink; /* 0x2 */ 445 union { 446 struct { 447 __fs16 ui_suid; /* 0x4 */ 448 __fs16 ui_sgid; /* 0x6 */ 449 } oldids; 450 __fs32 ui_inumber; /* 0x4 lsf: inode number */ 451 __fs32 ui_author; /* 0x4 GNU HURD: author */ 452 } ui_u1; 453 __fs64 ui_size; /* 0x8 */ 454 struct ufs_timeval ui_atime; /* 0x10 access */ 455 struct ufs_timeval ui_mtime; /* 0x18 modification */ 456 struct ufs_timeval ui_ctime; /* 0x20 creation */ 457 union { 458 struct { 459 __fs32 ui_db[UFS_NDADDR];/* 0x28 data blocks */ 460 __fs32 ui_ib[UFS_NINDIR];/* 0x58 indirect blocks */ 461 } ui_addr; 462 __u8 ui_symlink[4*(UFS_NDADDR+UFS_NINDIR)];/* 0x28 fast symlink */ 463 } ui_u2; 464 __fs32 ui_flags; /* 0x64 immutable, append-only... */ 465 __fs32 ui_blocks; /* 0x68 blocks in use */ 466 __fs32 ui_gen; /* 0x6c like ext2 i_version, for NFS support */ 467 union { 468 struct { 469 __fs32 ui_shadow; /* 0x70 shadow inode with security data */ 470 __fs32 ui_uid; /* 0x74 long EFT version of uid */ 471 __fs32 ui_gid; /* 0x78 long EFT version of gid */ 472 __fs32 ui_oeftflag; /* 0x7c reserved */ 473 } ui_sun; 474 struct { 475 __fs32 ui_uid; /* 0x70 File owner */ 476 __fs32 ui_gid; /* 0x74 File group */ 477 __fs32 ui_spare[2]; /* 0x78 reserved */ 478 } ui_44; 479 struct { 480 __fs32 ui_uid; /* 0x70 */ 481 __fs32 ui_gid; /* 0x74 */ 482 __fs16 ui_modeh; /* 0x78 mode high bits */ 483 __fs16 ui_spare; /* 0x7A unused */ 484 __fs32 ui_trans; /* 0x7c filesystem translator */ 485 } ui_hurd; 486 } ui_u3; 487}; 488 489#define UFS_NXADDR 2 /* External addresses in inode. */ 490struct ufs2_inode { 491 __fs16 ui_mode; /* 0: IFMT, permissions; see below. */ 492 __fs16 ui_nlink; /* 2: File link count. */ 493 __fs32 ui_uid; /* 4: File owner. */ 494 __fs32 ui_gid; /* 8: File group. */ 495 __fs32 ui_blksize; /* 12: Inode blocksize. */ 496 __fs64 ui_size; /* 16: File byte count. */ 497 __fs64 ui_blocks; /* 24: Bytes actually held. */ 498 __fs64 ui_atime; /* 32: Last access time. */ 499 __fs64 ui_mtime; /* 40: Last modified time. */ 500 __fs64 ui_ctime; /* 48: Last inode change time. */ 501 __fs64 ui_birthtime; /* 56: Inode creation time. */ 502 __fs32 ui_mtimensec; /* 64: Last modified time. */ 503 __fs32 ui_atimensec; /* 68: Last access time. */ 504 __fs32 ui_ctimensec; /* 72: Last inode change time. */ 505 __fs32 ui_birthnsec; /* 76: Inode creation time. */ 506 __fs32 ui_gen; /* 80: Generation number. */ 507 __fs32 ui_kernflags; /* 84: Kernel flags. */ 508 __fs32 ui_flags; /* 88: Status flags (chflags). */ 509 __fs32 ui_extsize; /* 92: External attributes block. */ 510 __fs64 ui_extb[UFS_NXADDR];/* 96: External attributes block. */ 511 union { 512 struct { 513 __fs64 ui_db[UFS_NDADDR]; /* 112: Direct disk blocks. */ 514 __fs64 ui_ib[UFS_NINDIR];/* 208: Indirect disk blocks.*/ 515 } ui_addr; 516 __u8 ui_symlink[2*4*(UFS_NDADDR+UFS_NINDIR)];/* 0x28 fast symlink */ 517 } ui_u2; 518 __fs64 ui_spare[3]; /* 232: Reserved; currently unused */ 519}; 520 521 522/* FreeBSD has these in sys/stat.h */ 523/* ui_flags that can be set by a file owner */ 524#define UFS_UF_SETTABLE 0x0000ffff 525#define UFS_UF_NODUMP 0x00000001 /* do not dump */ 526#define UFS_UF_IMMUTABLE 0x00000002 /* immutable (can't "change") */ 527#define UFS_UF_APPEND 0x00000004 /* append-only */ 528#define UFS_UF_OPAQUE 0x00000008 /* directory is opaque (unionfs) */ 529#define UFS_UF_NOUNLINK 0x00000010 /* can't be removed or renamed */ 530/* ui_flags that only root can set */ 531#define UFS_SF_SETTABLE 0xffff0000 532#define UFS_SF_ARCHIVED 0x00010000 /* archived */ 533#define UFS_SF_IMMUTABLE 0x00020000 /* immutable (can't "change") */ 534#define UFS_SF_APPEND 0x00040000 /* append-only */ 535#define UFS_SF_NOUNLINK 0x00100000 /* can't be removed or renamed */ 536 537/* 538 * This structure is used for reading disk structures larger 539 * than the size of fragment. 540 */ 541struct ufs_buffer_head { 542 __u64 fragment; /* first fragment */ 543 __u64 count; /* number of fragments */ 544 struct buffer_head * bh[UFS_MAXFRAG]; /* buffers */ 545}; 546 547struct ufs_cg_private_info { 548 struct ufs_buffer_head c_ubh; 549 __u32 c_cgx; /* number of cylidner group */ 550 __u16 c_ncyl; /* number of cyl's this cg */ 551 __u16 c_niblk; /* number of inode blocks this cg */ 552 __u32 c_ndblk; /* number of data blocks this cg */ 553 __u32 c_rotor; /* position of last used block */ 554 __u32 c_frotor; /* position of last used frag */ 555 __u32 c_irotor; /* position of last used inode */ 556 __u32 c_btotoff; /* (__u32) block totals per cylinder */ 557 __u32 c_boff; /* (short) free block positions */ 558 __u32 c_iusedoff; /* (char) used inode map */ 559 __u32 c_freeoff; /* (u_char) free block map */ 560 __u32 c_nextfreeoff; /* (u_char) next available space */ 561 __u32 c_clustersumoff;/* (u_int32) counts of avail clusters */ 562 __u32 c_clusteroff; /* (u_int8) free cluster map */ 563 __u32 c_nclusterblks; /* number of clusters this cg */ 564}; 565 566 567struct ufs_sb_private_info { 568 struct ufs_buffer_head s_ubh; /* buffer containing super block */ 569 struct ufs_csum_core cs_total; 570 __u32 s_sblkno; /* offset of super-blocks in filesys */ 571 __u32 s_cblkno; /* offset of cg-block in filesys */ 572 __u32 s_iblkno; /* offset of inode-blocks in filesys */ 573 __u32 s_dblkno; /* offset of first data after cg */ 574 __u32 s_cgoffset; /* cylinder group offset in cylinder */ 575 __u32 s_cgmask; /* used to calc mod fs_ntrak */ 576 __u32 s_size; /* number of blocks (fragments) in fs */ 577 __u32 s_dsize; /* number of data blocks in fs */ 578 __u64 s_u2_size; /* ufs2: number of blocks (fragments) in fs */ 579 __u64 s_u2_dsize; /*ufs2: number of data blocks in fs */ 580 __u32 s_ncg; /* number of cylinder groups */ 581 __u32 s_bsize; /* size of basic blocks */ 582 __u32 s_fsize; /* size of fragments */ 583 __u32 s_fpb; /* fragments per block */ 584 __u32 s_minfree; /* minimum percentage of free blocks */ 585 __u32 s_bmask; /* `blkoff'' calc of blk offsets */ 586 __u32 s_fmask; /* s_fsize mask */ 587 __u32 s_bshift; /* `lblkno'' calc of logical blkno */ 588 __u32 s_fshift; /* s_fsize shift */ 589 __u32 s_fpbshift; /* fragments per block shift */ 590 __u32 s_fsbtodb; /* fsbtodb and dbtofsb shift constant */ 591 __u32 s_sbsize; /* actual size of super block */ 592 __u32 s_csmask; /* csum block offset */ 593 __u32 s_csshift; /* csum block number */ 594 __u32 s_nindir; /* value of NINDIR */ 595 __u32 s_inopb; /* value of INOPB */ 596 __u32 s_nspf; /* value of NSPF */ 597 __u32 s_npsect; /* # sectors/track including spares */ 598 __u32 s_interleave; /* hardware sector interleave */ 599 __u32 s_trackskew; /* sector 0 skew, per track */ 600 __u64 s_csaddr; /* blk addr of cyl grp summary area */ 601 __u32 s_cssize; /* size of cyl grp summary area */ 602 __u32 s_cgsize; /* cylinder group size */ 603 __u32 s_ntrak; /* tracks per cylinder */ 604 __u32 s_nsect; /* sectors per track */ 605 __u32 s_spc; /* sectors per cylinder */ 606 __u32 s_ipg; /* inodes per cylinder group */ 607 __u32 s_fpg; /* fragments per group */ 608 __u32 s_cpc; /* cyl per cycle in postbl */ 609 __s32 s_contigsumsize;/* size of cluster summary array, 44bsd */ 610 __s64 s_qbmask; /* ~usb_bmask */ 611 __s64 s_qfmask; /* ~usb_fmask */ 612 __s32 s_postblformat; /* format of positional layout tables */ 613 __s32 s_nrpos; /* number of rotational positions */ 614 __s32 s_postbloff; /* (__s16) rotation block list head */ 615 __s32 s_rotbloff; /* (__u8) blocks for each rotation */ 616 617 __u32 s_fpbmask; /* fragments per block mask */ 618 __u32 s_apb; /* address per block */ 619 __u32 s_2apb; /* address per block^2 */ 620 __u32 s_3apb; /* address per block^3 */ 621 __u32 s_apbmask; /* address per block mask */ 622 __u32 s_apbshift; /* address per block shift */ 623 __u32 s_2apbshift; /* address per block shift * 2 */ 624 __u32 s_3apbshift; /* address per block shift * 3 */ 625 __u32 s_nspfshift; /* number of sector per fragment shift */ 626 __u32 s_nspb; /* number of sector per block */ 627 __u32 s_inopf; /* inodes per fragment */ 628 __u32 s_sbbase; /* offset of NeXTstep superblock */ 629 __u32 s_bpf; /* bits per fragment */ 630 __u32 s_bpfshift; /* bits per fragment shift*/ 631 __u32 s_bpfmask; /* bits per fragment mask */ 632 633 __u32 s_maxsymlinklen;/* upper limit on fast symlinks' size */ 634 __s32 fs_magic; /* filesystem magic */ 635 unsigned int s_dirblksize; 636}; 637 638/* 639 * Sizes of this structures are: 640 * ufs_super_block_first 512 641 * ufs_super_block_second 512 642 * ufs_super_block_third 356 643 */ 644struct ufs_super_block_first { 645 union { 646 struct { 647 __fs32 fs_link; /* UNUSED */ 648 } fs_42; 649 struct { 650 __fs32 fs_state; /* file system state flag */ 651 } fs_sun; 652 } fs_u0; 653 __fs32 fs_rlink; 654 __fs32 fs_sblkno; 655 __fs32 fs_cblkno; 656 __fs32 fs_iblkno; 657 __fs32 fs_dblkno; 658 __fs32 fs_cgoffset; 659 __fs32 fs_cgmask; 660 __fs32 fs_time; 661 __fs32 fs_size; 662 __fs32 fs_dsize; 663 __fs32 fs_ncg; 664 __fs32 fs_bsize; 665 __fs32 fs_fsize; 666 __fs32 fs_frag; 667 __fs32 fs_minfree; 668 __fs32 fs_rotdelay; 669 __fs32 fs_rps; 670 __fs32 fs_bmask; 671 __fs32 fs_fmask; 672 __fs32 fs_bshift; 673 __fs32 fs_fshift; 674 __fs32 fs_maxcontig; 675 __fs32 fs_maxbpg; 676 __fs32 fs_fragshift; 677 __fs32 fs_fsbtodb; 678 __fs32 fs_sbsize; 679 __fs32 fs_csmask; 680 __fs32 fs_csshift; 681 __fs32 fs_nindir; 682 __fs32 fs_inopb; 683 __fs32 fs_nspf; 684 __fs32 fs_optim; 685 union { 686 struct { 687 __fs32 fs_npsect; 688 } fs_sun; 689 struct { 690 __fs32 fs_state; 691 } fs_sunx86; 692 } fs_u1; 693 __fs32 fs_interleave; 694 __fs32 fs_trackskew; 695 __fs32 fs_id[2]; 696 __fs32 fs_csaddr; 697 __fs32 fs_cssize; 698 __fs32 fs_cgsize; 699 __fs32 fs_ntrak; 700 __fs32 fs_nsect; 701 __fs32 fs_spc; 702 __fs32 fs_ncyl; 703 __fs32 fs_cpg; 704 __fs32 fs_ipg; 705 __fs32 fs_fpg; 706 struct ufs_csum fs_cstotal; 707 __s8 fs_fmod; 708 __s8 fs_clean; 709 __s8 fs_ronly; 710 __s8 fs_flags; 711 __s8 fs_fsmnt[UFS_MAXMNTLEN - 212]; 712 713}; 714 715struct ufs_super_block_second { 716 union { 717 struct { 718 __s8 fs_fsmnt[212]; 719 __fs32 fs_cgrotor; 720 __fs32 fs_csp[UFS_MAXCSBUFS]; 721 __fs32 fs_maxcluster; 722 __fs32 fs_cpc; 723 __fs16 fs_opostbl[82]; 724 } fs_u1; 725 struct { 726 __s8 fs_fsmnt[UFS2_MAXMNTLEN - UFS_MAXMNTLEN + 212]; 727 __u8 fs_volname[UFS2_MAXVOLLEN]; 728 __fs64 fs_swuid; 729 __fs32 fs_pad; 730 __fs32 fs_cgrotor; 731 __fs32 fs_ocsp[UFS2_NOCSPTRS]; 732 __fs32 fs_contigdirs; 733 __fs32 fs_csp; 734 __fs32 fs_maxcluster; 735 __fs32 fs_active; 736 __fs32 fs_old_cpc; 737 __fs32 fs_maxbsize; 738 __fs64 fs_sparecon64[17]; 739 __fs64 fs_sblockloc; 740 __fs64 cs_ndir; 741 __fs64 cs_nbfree; 742 } fs_u2; 743 } fs_un; 744}; 745 746struct ufs_super_block_third { 747 union { 748 struct { 749 __fs16 fs_opostbl[46]; 750 } fs_u1; 751 struct { 752 __fs64 cs_nifree; /* number of free inodes */ 753 __fs64 cs_nffree; /* number of free frags */ 754 __fs64 cs_numclusters; /* number of free clusters */ 755 __fs64 cs_spare[3]; /* future expansion */ 756 struct ufs_timeval fs_time; /* last time written */ 757 __fs64 fs_size; /* number of blocks in fs */ 758 __fs64 fs_dsize; /* number of data blocks in fs */ 759 __fs64 fs_csaddr; /* blk addr of cyl grp summary area */ 760 __fs64 fs_pendingblocks;/* blocks in process of being freed */ 761 __fs32 fs_pendinginodes;/*inodes in process of being freed */ 762 } __attribute__ ((packed)) fs_u2; 763 } fs_un1; 764 union { 765 struct { 766 __fs32 fs_sparecon[53];/* reserved for future constants */ 767 __fs32 fs_reclaim; 768 __fs32 fs_sparecon2[1]; 769 __fs32 fs_state; /* file system state time stamp */ 770 __fs32 fs_qbmask[2]; /* ~usb_bmask */ 771 __fs32 fs_qfmask[2]; /* ~usb_fmask */ 772 } fs_sun; 773 struct { 774 __fs32 fs_sparecon[53];/* reserved for future constants */ 775 __fs32 fs_reclaim; 776 __fs32 fs_sparecon2[1]; 777 __fs32 fs_npsect; /* # sectors/track including spares */ 778 __fs32 fs_qbmask[2]; /* ~usb_bmask */ 779 __fs32 fs_qfmask[2]; /* ~usb_fmask */ 780 } fs_sunx86; 781 struct { 782 __fs32 fs_sparecon[50];/* reserved for future constants */ 783 __fs32 fs_contigsumsize;/* size of cluster summary array */ 784 __fs32 fs_maxsymlinklen;/* max length of an internal symlink */ 785 __fs32 fs_inodefmt; /* format of on-disk inodes */ 786 __fs32 fs_maxfilesize[2]; /* max representable file size */ 787 __fs32 fs_qbmask[2]; /* ~usb_bmask */ 788 __fs32 fs_qfmask[2]; /* ~usb_fmask */ 789 __fs32 fs_state; /* file system state time stamp */ 790 } fs_44; 791 } fs_un2; 792 __fs32 fs_postblformat; 793 __fs32 fs_nrpos; 794 __fs32 fs_postbloff; 795 __fs32 fs_rotbloff; 796 __fs32 fs_magic; 797 __u8 fs_space[1]; 798}; 799 800#endif /* __LINUX_UFS_FS_H */ 801