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#ifndef __KERNEL__ 39typedef __u64 __fs64; 40typedef __u32 __fs32; 41typedef __u16 __fs16; 42#else 43#include <asm/div64.h> 44typedef __u64 __bitwise __fs64; 45typedef __u32 __bitwise __fs32; 46typedef __u16 __bitwise __fs16; 47#endif 48 49#ifdef __KERNEL__ 50#include <linux/ufs_fs_i.h> 51#include <linux/ufs_fs_sb.h> 52#endif 53 54#define UFS_BBLOCK 0 55#define UFS_BBSIZE 8192 56#define UFS_SBLOCK 8192 57#define UFS_SBSIZE 8192 58 59#define UFS_SECTOR_SIZE 512 60#define UFS_SECTOR_BITS 9 61#define UFS_MAGIC 0x00011954 62#define UFS2_MAGIC 0x19540119 63#define UFS_CIGAM 0x54190100 /* byteswapped MAGIC */ 64 65/* Copied from FreeBSD */ 66/* 67 * Each disk drive contains some number of filesystems. 68 * A filesystem consists of a number of cylinder groups. 69 * Each cylinder group has inodes and data. 70 * 71 * A filesystem is described by its super-block, which in turn 72 * describes the cylinder groups. The super-block is critical 73 * data and is replicated in each cylinder group to protect against 74 * catastrophic loss. This is done at `newfs' time and the critical 75 * super-block data does not change, so the copies need not be 76 * referenced further unless disaster strikes. 77 * 78 * For filesystem fs, the offsets of the various blocks of interest 79 * are given in the super block as: 80 * [fs->fs_sblkno] Super-block 81 * [fs->fs_cblkno] Cylinder group block 82 * [fs->fs_iblkno] Inode blocks 83 * [fs->fs_dblkno] Data blocks 84 * The beginning of cylinder group cg in fs, is given by 85 * the ``cgbase(fs, cg)'' macro. 86 * 87 * Depending on the architecture and the media, the superblock may 88 * reside in any one of four places. For tiny media where every block 89 * counts, it is placed at the very front of the partition. Historically, 90 * UFS1 placed it 8K from the front to leave room for the disk label and 91 * a small bootstrap. For UFS2 it got moved to 64K from the front to leave 92 * room for the disk label and a bigger bootstrap, and for really piggy 93 * systems we check at 256K from the front if the first three fail. In 94 * all cases the size of the superblock will be SBLOCKSIZE. All values are 95 * given in byte-offset form, so they do not imply a sector size. The 96 * SBLOCKSEARCH specifies the order in which the locations should be searched. 97 */ 98#define SBLOCK_FLOPPY 0 99#define SBLOCK_UFS1 8192 100#define SBLOCK_UFS2 65536 101#define SBLOCK_PIGGY 262144 102#define SBLOCKSIZE 8192 103#define SBLOCKSEARCH \ 104 { SBLOCK_UFS2, SBLOCK_UFS1, SBLOCK_FLOPPY, SBLOCK_PIGGY, -1 } 105 106 107/* HP specific MAGIC values */ 108 109#define UFS_MAGIC_LFN 0x00095014 /* fs supports filenames > 14 chars */ 110#define UFS_CIGAM_LFN 0x14500900 /* srahc 41 < semanelif stroppus sf */ 111 112#define UFS_MAGIC_SEC 0x00612195 /* B1 security fs */ 113#define UFS_CIGAM_SEC 0x95216100 114 115#define UFS_MAGIC_FEA 0x00195612 /* fs_featurebits supported */ 116#define UFS_CIGAM_FEA 0x12561900 117 118#define UFS_MAGIC_4GB 0x05231994 /* fs > 4 GB && fs_featurebits */ 119#define UFS_CIGAM_4GB 0x94192305 120 121/* Seems somebody at HP goofed here. B1 and lfs are both 0x2 !?! */ 122#define UFS_FSF_LFN 0x00000001 /* long file names */ 123#define UFS_FSF_B1 0x00000002 /* B1 security */ 124#define UFS_FSF_LFS 0x00000002 /* large files */ 125#define UFS_FSF_LUID 0x00000004 /* large UIDs */ 126 127/* End of HP stuff */ 128 129 130#define UFS_BSIZE 8192 131#define UFS_MINBSIZE 4096 132#define UFS_FSIZE 1024 133#define UFS_MAXFRAG (UFS_BSIZE / UFS_FSIZE) 134 135#define UFS_NDADDR 12 136#define UFS_NINDIR 3 137 138#define UFS_IND_BLOCK (UFS_NDADDR + 0) 139#define UFS_DIND_BLOCK (UFS_NDADDR + 1) 140#define UFS_TIND_BLOCK (UFS_NDADDR + 2) 141 142#define UFS_NDIR_FRAGMENT (UFS_NDADDR << uspi->s_fpbshift) 143#define UFS_IND_FRAGMENT (UFS_IND_BLOCK << uspi->s_fpbshift) 144#define UFS_DIND_FRAGMENT (UFS_DIND_BLOCK << uspi->s_fpbshift) 145#define UFS_TIND_FRAGMENT (UFS_TIND_BLOCK << uspi->s_fpbshift) 146 147#define UFS_ROOTINO 2 148#define UFS_FIRST_INO (UFS_ROOTINO + 1) 149 150#define UFS_USEEFT ((__u16)65535) 151 152#define UFS_FSOK 0x7c269d38 153#define UFS_FSACTIVE ((__s8)0x00) 154#define UFS_FSCLEAN ((__s8)0x01) 155#define UFS_FSSTABLE ((__s8)0x02) 156#define UFS_FSOSF1 ((__s8)0x03) /* is this correct for DEC OSF/1? */ 157#define UFS_FSBAD ((__s8)0xff) 158 159/* From here to next blank line, s_flags for ufs_sb_info */ 160/* directory entry encoding */ 161#define UFS_DE_MASK 0x00000010 /* mask for the following */ 162#define UFS_DE_OLD 0x00000000 163#define UFS_DE_44BSD 0x00000010 164/* uid encoding */ 165#define UFS_UID_MASK 0x00000060 /* mask for the following */ 166#define UFS_UID_OLD 0x00000000 167#define UFS_UID_44BSD 0x00000020 168#define UFS_UID_EFT 0x00000040 169/* superblock state encoding */ 170#define UFS_ST_MASK 0x00000700 /* mask for the following */ 171#define UFS_ST_OLD 0x00000000 172#define UFS_ST_44BSD 0x00000100 173#define UFS_ST_SUN 0x00000200 174#define UFS_ST_SUNx86 0x00000400 175/*cylinder group encoding */ 176#define UFS_CG_MASK 0x00003000 /* mask for the following */ 177#define UFS_CG_OLD 0x00000000 178#define UFS_CG_44BSD 0x00002000 179#define UFS_CG_SUN 0x00001000 180/* filesystem type encoding */ 181#define UFS_TYPE_MASK 0x00010000 /* mask for the following */ 182#define UFS_TYPE_UFS1 0x00000000 183#define UFS_TYPE_UFS2 0x00010000 184 185 186/* fs_inodefmt options */ 187#define UFS_42INODEFMT -1 188#define UFS_44INODEFMT 2 189 190/* mount options */ 191#define UFS_MOUNT_ONERROR 0x0000000F 192#define UFS_MOUNT_ONERROR_PANIC 0x00000001 193#define UFS_MOUNT_ONERROR_LOCK 0x00000002 194#define UFS_MOUNT_ONERROR_UMOUNT 0x00000004 195#define UFS_MOUNT_ONERROR_REPAIR 0x00000008 196 197#define UFS_MOUNT_UFSTYPE 0x0000FFF0 198#define UFS_MOUNT_UFSTYPE_OLD 0x00000010 199#define UFS_MOUNT_UFSTYPE_44BSD 0x00000020 200#define UFS_MOUNT_UFSTYPE_SUN 0x00000040 201#define UFS_MOUNT_UFSTYPE_NEXTSTEP 0x00000080 202#define UFS_MOUNT_UFSTYPE_NEXTSTEP_CD 0x00000100 203#define UFS_MOUNT_UFSTYPE_OPENSTEP 0x00000200 204#define UFS_MOUNT_UFSTYPE_SUNx86 0x00000400 205#define UFS_MOUNT_UFSTYPE_HP 0x00000800 206#define UFS_MOUNT_UFSTYPE_UFS2 0x00001000 207 208#define ufs_clear_opt(o,opt) o &= ~UFS_MOUNT_##opt 209#define ufs_set_opt(o,opt) o |= UFS_MOUNT_##opt 210#define ufs_test_opt(o,opt) ((o) & UFS_MOUNT_##opt) 211 212/* 213 * MINFREE gives the minimum acceptable percentage of file system 214 * blocks which may be free. If the freelist drops below this level 215 * only the superuser may continue to allocate blocks. This may 216 * be set to 0 if no reserve of free blocks is deemed necessary, 217 * however throughput drops by fifty percent if the file system 218 * is run at between 95% and 100% full; thus the minimum default 219 * value of fs_minfree is 5%. However, to get good clustering 220 * performance, 10% is a better choice. hence we use 10% as our 221 * default value. With 10% free space, fragmentation is not a 222 * problem, so we choose to optimize for time. 223 */ 224#define UFS_MINFREE 5 225#define UFS_DEFAULTOPT UFS_OPTTIME 226 227/* 228 * Debug code 229 */ 230#ifdef CONFIG_UFS_DEBUG 231# define UFSD(f, a...) { \ 232 printk ("UFSD (%s, %d): %s:", \ 233 __FILE__, __LINE__, __FUNCTION__); \ 234 printk (f, ## a); \ 235 } 236#else 237# define UFSD(f, a...) /**/ 238#endif 239 240/* 241 * Turn file system block numbers into disk block addresses. 242 * This maps file system blocks to device size blocks. 243 */ 244#define ufs_fsbtodb(uspi, b) ((b) << (uspi)->s_fsbtodb) 245#define ufs_dbtofsb(uspi, b) ((b) >> (uspi)->s_fsbtodb) 246 247/* 248 * Cylinder group macros to locate things in cylinder groups. 249 * They calc file system addresses of cylinder group data structures. 250 */ 251#define ufs_cgbase(c) (uspi->s_fpg * (c)) 252#define ufs_cgstart(c) ((uspi)->fs_magic == UFS2_MAGIC ? ufs_cgbase(c) : \ 253 (ufs_cgbase(c) + uspi->s_cgoffset * ((c) & ~uspi->s_cgmask))) 254#define ufs_cgsblock(c) (ufs_cgstart(c) + uspi->s_sblkno) /* super blk */ 255#define ufs_cgcmin(c) (ufs_cgstart(c) + uspi->s_cblkno) /* cg block */ 256#define ufs_cgimin(c) (ufs_cgstart(c) + uspi->s_iblkno) /* inode blk */ 257#define ufs_cgdmin(c) (ufs_cgstart(c) + uspi->s_dblkno) /* 1st data */ 258 259/* 260 * Macros for handling inode numbers: 261 * inode number to file system block offset. 262 * inode number to cylinder group number. 263 * inode number to file system block address. 264 */ 265#define ufs_inotocg(x) ((x) / uspi->s_ipg) 266#define ufs_inotocgoff(x) ((x) % uspi->s_ipg) 267#define ufs_inotofsba(x) (((u64)ufs_cgimin(ufs_inotocg(x))) + ufs_inotocgoff(x) / uspi->s_inopf) 268#define ufs_inotofsbo(x) ((x) % uspi->s_inopf) 269 270/* 271 * Compute the cylinder and rotational position of a cyl block addr. 272 */ 273#define ufs_cbtocylno(bno) \ 274 ((bno) * uspi->s_nspf / uspi->s_spc) 275#define ufs_cbtorpos(bno) \ 276 ((((bno) * uspi->s_nspf % uspi->s_spc / uspi->s_nsect \ 277 * uspi->s_trackskew + (bno) * uspi->s_nspf % uspi->s_spc \ 278 % uspi->s_nsect * uspi->s_interleave) % uspi->s_nsect \ 279 * uspi->s_nrpos) / uspi->s_npsect) 280 281/* 282 * The following macros optimize certain frequently calculated 283 * quantities by using shifts and masks in place of divisions 284 * modulos and multiplications. 285 */ 286#define ufs_blkoff(loc) ((loc) & uspi->s_qbmask) 287#define ufs_fragoff(loc) ((loc) & uspi->s_qfmask) 288#define ufs_lblktosize(blk) ((blk) << uspi->s_bshift) 289#define ufs_lblkno(loc) ((loc) >> uspi->s_bshift) 290#define ufs_numfrags(loc) ((loc) >> uspi->s_fshift) 291#define ufs_blkroundup(size) (((size) + uspi->s_qbmask) & uspi->s_bmask) 292#define ufs_fragroundup(size) (((size) + uspi->s_qfmask) & uspi->s_fmask) 293#define ufs_fragstoblks(frags) ((frags) >> uspi->s_fpbshift) 294#define ufs_blkstofrags(blks) ((blks) << uspi->s_fpbshift) 295#define ufs_fragnum(fsb) ((fsb) & uspi->s_fpbmask) 296#define ufs_blknum(fsb) ((fsb) & ~uspi->s_fpbmask) 297 298#define UFS_MAXNAMLEN 255 299#define UFS_MAXMNTLEN 512 300#define UFS2_MAXMNTLEN 468 301#define UFS2_MAXVOLLEN 32 302#define UFS_MAXCSBUFS 31 303#define UFS_LINK_MAX 32000 304/* 305#define UFS2_NOCSPTRS ((128 / sizeof(void *)) - 4) 306*/ 307#define UFS2_NOCSPTRS 28 308 309/* 310 * UFS_DIR_PAD defines the directory entries boundaries 311 * (must be a multiple of 4) 312 */ 313#define UFS_DIR_PAD 4 314#define UFS_DIR_ROUND (UFS_DIR_PAD - 1) 315#define UFS_DIR_REC_LEN(name_len) (((name_len) + 1 + 8 + UFS_DIR_ROUND) & ~UFS_DIR_ROUND) 316 317struct ufs_timeval { 318 __fs32 tv_sec; 319 __fs32 tv_usec; 320}; 321 322struct ufs_dir_entry { 323 __fs32 d_ino; /* inode number of this entry */ 324 __fs16 d_reclen; /* length of this entry */ 325 union { 326 __fs16 d_namlen; /* actual length of d_name */ 327 struct { 328 __u8 d_type; /* file type */ 329 __u8 d_namlen; /* length of string in d_name */ 330 } d_44; 331 } d_u; 332 __u8 d_name[UFS_MAXNAMLEN + 1]; /* file name */ 333}; 334 335struct ufs_csum { 336 __fs32 cs_ndir; /* number of directories */ 337 __fs32 cs_nbfree; /* number of free blocks */ 338 __fs32 cs_nifree; /* number of free inodes */ 339 __fs32 cs_nffree; /* number of free frags */ 340}; 341struct ufs2_csum_total { 342 __fs64 cs_ndir; /* number of directories */ 343 __fs64 cs_nbfree; /* number of free blocks */ 344 __fs64 cs_nifree; /* number of free inodes */ 345 __fs64 cs_nffree; /* number of free frags */ 346 __fs64 cs_numclusters; /* number of free clusters */ 347 __fs64 cs_spare[3]; /* future expansion */ 348}; 349 350struct ufs_csum_core { 351 __u64 cs_ndir; /* number of directories */ 352 __u64 cs_nbfree; /* number of free blocks */ 353 __u64 cs_nifree; /* number of free inodes */ 354 __u64 cs_nffree; /* number of free frags */ 355 __u64 cs_numclusters; /* number of free clusters */ 356}; 357 358/* 359 * File system flags 360 */ 361#define UFS_UNCLEAN 0x01 /* file system not clean at mount (unused) */ 362#define UFS_DOSOFTDEP 0x02 /* file system using soft dependencies */ 363#define UFS_NEEDSFSCK 0x04 /* needs sync fsck (FreeBSD compat, unused) */ 364#define UFS_INDEXDIRS 0x08 /* kernel supports indexed directories */ 365#define UFS_ACLS 0x10 /* file system has ACLs enabled */ 366#define UFS_MULTILABEL 0x20 /* file system is MAC multi-label */ 367#define UFS_FLAGS_UPDATED 0x80 /* flags have been moved to new location */ 368 369 370/* 371 * Preference for optimization. 372 */ 373#define UFS_OPTTIME 0 /* minimize allocation time */ 374#define UFS_OPTSPACE 1 /* minimize disk fragmentation */ 375 376/* 377 * Rotational layout table format types 378 */ 379#define UFS_42POSTBLFMT -1 /* 4.2BSD rotational table format */ 380#define UFS_DYNAMICPOSTBLFMT 1 /* dynamic rotational table format */ 381 382/* 383 * Convert cylinder group to base address of its global summary info. 384 */ 385#define fs_cs(indx) s_csp[(indx)] 386 387/* 388 * Cylinder group block for a file system. 389 * 390 * Writable fields in the cylinder group are protected by the associated 391 * super block lock fs->fs_lock. 392 */ 393#define CG_MAGIC 0x090255 394#define ufs_cg_chkmagic(sb, ucg) \ 395 (fs32_to_cpu((sb), (ucg)->cg_magic) == CG_MAGIC) 396 397/* 398 * size of this structure is 172 B 399 */ 400struct ufs_cylinder_group { 401 __fs32 cg_link; /* linked list of cyl groups */ 402 __fs32 cg_magic; /* magic number */ 403 __fs32 cg_time; /* time last written */ 404 __fs32 cg_cgx; /* we are the cgx'th cylinder group */ 405 __fs16 cg_ncyl; /* number of cyl's this cg */ 406 __fs16 cg_niblk; /* number of inode blocks this cg */ 407 __fs32 cg_ndblk; /* number of data blocks this cg */ 408 struct ufs_csum cg_cs; /* cylinder summary information */ 409 __fs32 cg_rotor; /* position of last used block */ 410 __fs32 cg_frotor; /* position of last used frag */ 411 __fs32 cg_irotor; /* position of last used inode */ 412 __fs32 cg_frsum[UFS_MAXFRAG]; /* counts of available frags */ 413 __fs32 cg_btotoff; /* (__u32) block totals per cylinder */ 414 __fs32 cg_boff; /* (short) free block positions */ 415 __fs32 cg_iusedoff; /* (char) used inode map */ 416 __fs32 cg_freeoff; /* (u_char) free block map */ 417 __fs32 cg_nextfreeoff; /* (u_char) next available space */ 418 union { 419 struct { 420 __fs32 cg_clustersumoff; /* (u_int32) counts of avail clusters */ 421 __fs32 cg_clusteroff; /* (u_int8) free cluster map */ 422 __fs32 cg_nclusterblks; /* number of clusters this cg */ 423 __fs32 cg_sparecon[13]; /* reserved for future use */ 424 } cg_44; 425 struct { 426 __fs32 cg_clustersumoff;/* (u_int32) counts of avail clusters */ 427 __fs32 cg_clusteroff; /* (u_int8) free cluster map */ 428 __fs32 cg_nclusterblks;/* number of clusters this cg */ 429 __fs32 cg_niblk; /* number of inode blocks this cg */ 430 __fs32 cg_initediblk; /* last initialized inode */ 431 __fs32 cg_sparecon32[3];/* reserved for future use */ 432 __fs64 cg_time; /* time last written */ 433 __fs64 cg_sparecon[3]; /* reserved for future use */ 434 } cg_u2; 435 __fs32 cg_sparecon[16]; /* reserved for future use */ 436 } cg_u; 437 __u8 cg_space[1]; /* space for cylinder group maps */ 438/* actually longer */ 439}; 440 441/* 442 * structure of an on-disk inode 443 */ 444struct ufs_inode { 445 __fs16 ui_mode; /* 0x0 */ 446 __fs16 ui_nlink; /* 0x2 */ 447 union { 448 struct { 449 __fs16 ui_suid; /* 0x4 */ 450 __fs16 ui_sgid; /* 0x6 */ 451 } oldids; 452 __fs32 ui_inumber; /* 0x4 lsf: inode number */ 453 __fs32 ui_author; /* 0x4 GNU HURD: author */ 454 } ui_u1; 455 __fs64 ui_size; /* 0x8 */ 456 struct ufs_timeval ui_atime; /* 0x10 access */ 457 struct ufs_timeval ui_mtime; /* 0x18 modification */ 458 struct ufs_timeval ui_ctime; /* 0x20 creation */ 459 union { 460 struct { 461 __fs32 ui_db[UFS_NDADDR];/* 0x28 data blocks */ 462 __fs32 ui_ib[UFS_NINDIR];/* 0x58 indirect blocks */ 463 } ui_addr; 464 __u8 ui_symlink[4*(UFS_NDADDR+UFS_NINDIR)];/* 0x28 fast symlink */ 465 } ui_u2; 466 __fs32 ui_flags; /* 0x64 immutable, append-only... */ 467 __fs32 ui_blocks; /* 0x68 blocks in use */ 468 __fs32 ui_gen; /* 0x6c like ext2 i_version, for NFS support */ 469 union { 470 struct { 471 __fs32 ui_shadow; /* 0x70 shadow inode with security data */ 472 __fs32 ui_uid; /* 0x74 long EFT version of uid */ 473 __fs32 ui_gid; /* 0x78 long EFT version of gid */ 474 __fs32 ui_oeftflag; /* 0x7c reserved */ 475 } ui_sun; 476 struct { 477 __fs32 ui_uid; /* 0x70 File owner */ 478 __fs32 ui_gid; /* 0x74 File group */ 479 __fs32 ui_spare[2]; /* 0x78 reserved */ 480 } ui_44; 481 struct { 482 __fs32 ui_uid; /* 0x70 */ 483 __fs32 ui_gid; /* 0x74 */ 484 __fs16 ui_modeh; /* 0x78 mode high bits */ 485 __fs16 ui_spare; /* 0x7A unused */ 486 __fs32 ui_trans; /* 0x7c filesystem translator */ 487 } ui_hurd; 488 } ui_u3; 489}; 490 491#define UFS_NXADDR 2 /* External addresses in inode. */ 492struct ufs2_inode { 493 __fs16 ui_mode; /* 0: IFMT, permissions; see below. */ 494 __fs16 ui_nlink; /* 2: File link count. */ 495 __fs32 ui_uid; /* 4: File owner. */ 496 __fs32 ui_gid; /* 8: File group. */ 497 __fs32 ui_blksize; /* 12: Inode blocksize. */ 498 __fs64 ui_size; /* 16: File byte count. */ 499 __fs64 ui_blocks; /* 24: Bytes actually held. */ 500 __fs64 ui_atime; /* 32: Last access time. */ 501 __fs64 ui_mtime; /* 40: Last modified time. */ 502 __fs64 ui_ctime; /* 48: Last inode change time. */ 503 __fs64 ui_birthtime; /* 56: Inode creation time. */ 504 __fs32 ui_mtimensec; /* 64: Last modified time. */ 505 __fs32 ui_atimensec; /* 68: Last access time. */ 506 __fs32 ui_ctimensec; /* 72: Last inode change time. */ 507 __fs32 ui_birthnsec; /* 76: Inode creation time. */ 508 __fs32 ui_gen; /* 80: Generation number. */ 509 __fs32 ui_kernflags; /* 84: Kernel flags. */ 510 __fs32 ui_flags; /* 88: Status flags (chflags). */ 511 __fs32 ui_extsize; /* 92: External attributes block. */ 512 __fs64 ui_extb[UFS_NXADDR];/* 96: External attributes block. */ 513 union { 514 struct { 515 __fs64 ui_db[UFS_NDADDR]; /* 112: Direct disk blocks. */ 516 __fs64 ui_ib[UFS_NINDIR];/* 208: Indirect disk blocks.*/ 517 } ui_addr; 518 __u8 ui_symlink[2*4*(UFS_NDADDR+UFS_NINDIR)];/* 0x28 fast symlink */ 519 } ui_u2; 520 __fs64 ui_spare[3]; /* 232: Reserved; currently unused */ 521}; 522 523 524/* FreeBSD has these in sys/stat.h */ 525/* ui_flags that can be set by a file owner */ 526#define UFS_UF_SETTABLE 0x0000ffff 527#define UFS_UF_NODUMP 0x00000001 /* do not dump */ 528#define UFS_UF_IMMUTABLE 0x00000002 /* immutable (can't "change") */ 529#define UFS_UF_APPEND 0x00000004 /* append-only */ 530#define UFS_UF_OPAQUE 0x00000008 /* directory is opaque (unionfs) */ 531#define UFS_UF_NOUNLINK 0x00000010 /* can't be removed or renamed */ 532/* ui_flags that only root can set */ 533#define UFS_SF_SETTABLE 0xffff0000 534#define UFS_SF_ARCHIVED 0x00010000 /* archived */ 535#define UFS_SF_IMMUTABLE 0x00020000 /* immutable (can't "change") */ 536#define UFS_SF_APPEND 0x00040000 /* append-only */ 537#define UFS_SF_NOUNLINK 0x00100000 /* can't be removed or renamed */ 538 539/* 540 * This structure is used for reading disk structures larger 541 * than the size of fragment. 542 */ 543struct ufs_buffer_head { 544 __u64 fragment; /* first fragment */ 545 __u64 count; /* number of fragments */ 546 struct buffer_head * bh[UFS_MAXFRAG]; /* buffers */ 547}; 548 549struct ufs_cg_private_info { 550 struct ufs_buffer_head c_ubh; 551 __u32 c_cgx; /* number of cylidner group */ 552 __u16 c_ncyl; /* number of cyl's this cg */ 553 __u16 c_niblk; /* number of inode blocks this cg */ 554 __u32 c_ndblk; /* number of data blocks this cg */ 555 __u32 c_rotor; /* position of last used block */ 556 __u32 c_frotor; /* position of last used frag */ 557 __u32 c_irotor; /* position of last used inode */ 558 __u32 c_btotoff; /* (__u32) block totals per cylinder */ 559 __u32 c_boff; /* (short) free block positions */ 560 __u32 c_iusedoff; /* (char) used inode map */ 561 __u32 c_freeoff; /* (u_char) free block map */ 562 __u32 c_nextfreeoff; /* (u_char) next available space */ 563 __u32 c_clustersumoff;/* (u_int32) counts of avail clusters */ 564 __u32 c_clusteroff; /* (u_int8) free cluster map */ 565 __u32 c_nclusterblks; /* number of clusters this cg */ 566}; 567 568 569struct ufs_sb_private_info { 570 struct ufs_buffer_head s_ubh; /* buffer containing super block */ 571 struct ufs_csum_core cs_total; 572 __u32 s_sblkno; /* offset of super-blocks in filesys */ 573 __u32 s_cblkno; /* offset of cg-block in filesys */ 574 __u32 s_iblkno; /* offset of inode-blocks in filesys */ 575 __u32 s_dblkno; /* offset of first data after cg */ 576 __u32 s_cgoffset; /* cylinder group offset in cylinder */ 577 __u32 s_cgmask; /* used to calc mod fs_ntrak */ 578 __u32 s_size; /* number of blocks (fragments) in fs */ 579 __u32 s_dsize; /* number of data blocks in fs */ 580 __u64 s_u2_size; /* ufs2: number of blocks (fragments) in fs */ 581 __u64 s_u2_dsize; /*ufs2: number of data blocks in fs */ 582 __u32 s_ncg; /* number of cylinder groups */ 583 __u32 s_bsize; /* size of basic blocks */ 584 __u32 s_fsize; /* size of fragments */ 585 __u32 s_fpb; /* fragments per block */ 586 __u32 s_minfree; /* minimum percentage of free blocks */ 587 __u32 s_bmask; /* `blkoff'' calc of blk offsets */ 588 __u32 s_fmask; /* s_fsize mask */ 589 __u32 s_bshift; /* `lblkno'' calc of logical blkno */ 590 __u32 s_fshift; /* s_fsize shift */ 591 __u32 s_fpbshift; /* fragments per block shift */ 592 __u32 s_fsbtodb; /* fsbtodb and dbtofsb shift constant */ 593 __u32 s_sbsize; /* actual size of super block */ 594 __u32 s_csmask; /* csum block offset */ 595 __u32 s_csshift; /* csum block number */ 596 __u32 s_nindir; /* value of NINDIR */ 597 __u32 s_inopb; /* value of INOPB */ 598 __u32 s_nspf; /* value of NSPF */ 599 __u32 s_npsect; /* # sectors/track including spares */ 600 __u32 s_interleave; /* hardware sector interleave */ 601 __u32 s_trackskew; /* sector 0 skew, per track */ 602 __u64 s_csaddr; /* blk addr of cyl grp summary area */ 603 __u32 s_cssize; /* size of cyl grp summary area */ 604 __u32 s_cgsize; /* cylinder group size */ 605 __u32 s_ntrak; /* tracks per cylinder */ 606 __u32 s_nsect; /* sectors per track */ 607 __u32 s_spc; /* sectors per cylinder */ 608 __u32 s_ipg; /* inodes per cylinder group */ 609 __u32 s_fpg; /* fragments per group */ 610 __u32 s_cpc; /* cyl per cycle in postbl */ 611 __s32 s_contigsumsize;/* size of cluster summary array, 44bsd */ 612 __s64 s_qbmask; /* ~usb_bmask */ 613 __s64 s_qfmask; /* ~usb_fmask */ 614 __s32 s_postblformat; /* format of positional layout tables */ 615 __s32 s_nrpos; /* number of rotational positions */ 616 __s32 s_postbloff; /* (__s16) rotation block list head */ 617 __s32 s_rotbloff; /* (__u8) blocks for each rotation */ 618 619 __u32 s_fpbmask; /* fragments per block mask */ 620 __u32 s_apb; /* address per block */ 621 __u32 s_2apb; /* address per block^2 */ 622 __u32 s_3apb; /* address per block^3 */ 623 __u32 s_apbmask; /* address per block mask */ 624 __u32 s_apbshift; /* address per block shift */ 625 __u32 s_2apbshift; /* address per block shift * 2 */ 626 __u32 s_3apbshift; /* address per block shift * 3 */ 627 __u32 s_nspfshift; /* number of sector per fragment shift */ 628 __u32 s_nspb; /* number of sector per block */ 629 __u32 s_inopf; /* inodes per fragment */ 630 __u32 s_sbbase; /* offset of NeXTstep superblock */ 631 __u32 s_bpf; /* bits per fragment */ 632 __u32 s_bpfshift; /* bits per fragment shift*/ 633 __u32 s_bpfmask; /* bits per fragment mask */ 634 635 __u32 s_maxsymlinklen;/* upper limit on fast symlinks' size */ 636 __s32 fs_magic; /* filesystem magic */ 637 unsigned int s_dirblksize; 638}; 639 640/* 641 * Sizes of this structures are: 642 * ufs_super_block_first 512 643 * ufs_super_block_second 512 644 * ufs_super_block_third 356 645 */ 646struct ufs_super_block_first { 647 __fs32 fs_link; 648 __fs32 fs_rlink; 649 __fs32 fs_sblkno; 650 __fs32 fs_cblkno; 651 __fs32 fs_iblkno; 652 __fs32 fs_dblkno; 653 __fs32 fs_cgoffset; 654 __fs32 fs_cgmask; 655 __fs32 fs_time; 656 __fs32 fs_size; 657 __fs32 fs_dsize; 658 __fs32 fs_ncg; 659 __fs32 fs_bsize; 660 __fs32 fs_fsize; 661 __fs32 fs_frag; 662 __fs32 fs_minfree; 663 __fs32 fs_rotdelay; 664 __fs32 fs_rps; 665 __fs32 fs_bmask; 666 __fs32 fs_fmask; 667 __fs32 fs_bshift; 668 __fs32 fs_fshift; 669 __fs32 fs_maxcontig; 670 __fs32 fs_maxbpg; 671 __fs32 fs_fragshift; 672 __fs32 fs_fsbtodb; 673 __fs32 fs_sbsize; 674 __fs32 fs_csmask; 675 __fs32 fs_csshift; 676 __fs32 fs_nindir; 677 __fs32 fs_inopb; 678 __fs32 fs_nspf; 679 __fs32 fs_optim; 680 union { 681 struct { 682 __fs32 fs_npsect; 683 } fs_sun; 684 struct { 685 __fs32 fs_state; 686 } fs_sunx86; 687 } fs_u1; 688 __fs32 fs_interleave; 689 __fs32 fs_trackskew; 690 __fs32 fs_id[2]; 691 __fs32 fs_csaddr; 692 __fs32 fs_cssize; 693 __fs32 fs_cgsize; 694 __fs32 fs_ntrak; 695 __fs32 fs_nsect; 696 __fs32 fs_spc; 697 __fs32 fs_ncyl; 698 __fs32 fs_cpg; 699 __fs32 fs_ipg; 700 __fs32 fs_fpg; 701 struct ufs_csum fs_cstotal; 702 __s8 fs_fmod; 703 __s8 fs_clean; 704 __s8 fs_ronly; 705 __s8 fs_flags; 706 __s8 fs_fsmnt[UFS_MAXMNTLEN - 212]; 707 708}; 709 710struct ufs_super_block_second { 711 union { 712 struct { 713 __s8 fs_fsmnt[212]; 714 __fs32 fs_cgrotor; 715 __fs32 fs_csp[UFS_MAXCSBUFS]; 716 __fs32 fs_maxcluster; 717 __fs32 fs_cpc; 718 __fs16 fs_opostbl[82]; 719 } fs_u1; 720 struct { 721 __s8 fs_fsmnt[UFS2_MAXMNTLEN - UFS_MAXMNTLEN + 212]; 722 __u8 fs_volname[UFS2_MAXVOLLEN]; 723 __fs64 fs_swuid; 724 __fs32 fs_pad; 725 __fs32 fs_cgrotor; 726 __fs32 fs_ocsp[UFS2_NOCSPTRS]; 727 __fs32 fs_contigdirs; 728 __fs32 fs_csp; 729 __fs32 fs_maxcluster; 730 __fs32 fs_active; 731 __fs32 fs_old_cpc; 732 __fs32 fs_maxbsize; 733 __fs64 fs_sparecon64[17]; 734 __fs64 fs_sblockloc; 735 __fs64 cs_ndir; 736 __fs64 cs_nbfree; 737 } fs_u2; 738 } fs_un; 739}; 740 741struct ufs_super_block_third { 742 union { 743 struct { 744 __fs16 fs_opostbl[46]; 745 } fs_u1; 746 struct { 747 __fs64 cs_nifree; /* number of free inodes */ 748 __fs64 cs_nffree; /* number of free frags */ 749 __fs64 cs_numclusters; /* number of free clusters */ 750 __fs64 cs_spare[3]; /* future expansion */ 751 struct ufs_timeval fs_time; /* last time written */ 752 __fs64 fs_size; /* number of blocks in fs */ 753 __fs64 fs_dsize; /* number of data blocks in fs */ 754 __fs64 fs_csaddr; /* blk addr of cyl grp summary area */ 755 __fs64 fs_pendingblocks;/* blocks in process of being freed */ 756 __fs32 fs_pendinginodes;/*inodes in process of being freed */ 757 } __attribute__ ((packed)) fs_u2; 758 } fs_un1; 759 union { 760 struct { 761 __fs32 fs_sparecon[53];/* reserved for future constants */ 762 __fs32 fs_reclaim; 763 __fs32 fs_sparecon2[1]; 764 __fs32 fs_state; /* file system state time stamp */ 765 __fs32 fs_qbmask[2]; /* ~usb_bmask */ 766 __fs32 fs_qfmask[2]; /* ~usb_fmask */ 767 } fs_sun; 768 struct { 769 __fs32 fs_sparecon[53];/* reserved for future constants */ 770 __fs32 fs_reclaim; 771 __fs32 fs_sparecon2[1]; 772 __fs32 fs_npsect; /* # sectors/track including spares */ 773 __fs32 fs_qbmask[2]; /* ~usb_bmask */ 774 __fs32 fs_qfmask[2]; /* ~usb_fmask */ 775 } fs_sunx86; 776 struct { 777 __fs32 fs_sparecon[50];/* reserved for future constants */ 778 __fs32 fs_contigsumsize;/* size of cluster summary array */ 779 __fs32 fs_maxsymlinklen;/* max length of an internal symlink */ 780 __fs32 fs_inodefmt; /* format of on-disk inodes */ 781 __fs32 fs_maxfilesize[2]; /* max representable file size */ 782 __fs32 fs_qbmask[2]; /* ~usb_bmask */ 783 __fs32 fs_qfmask[2]; /* ~usb_fmask */ 784 __fs32 fs_state; /* file system state time stamp */ 785 } fs_44; 786 } fs_un2; 787 __fs32 fs_postblformat; 788 __fs32 fs_nrpos; 789 __fs32 fs_postbloff; 790 __fs32 fs_rotbloff; 791 __fs32 fs_magic; 792 __u8 fs_space[1]; 793}; 794 795#ifdef __KERNEL__ 796 797/* balloc.c */ 798extern void ufs_free_fragments (struct inode *, u64, unsigned); 799extern void ufs_free_blocks (struct inode *, u64, unsigned); 800extern u64 ufs_new_fragments(struct inode *, void *, u64, u64, 801 unsigned, int *, struct page *); 802 803/* cylinder.c */ 804extern struct ufs_cg_private_info * ufs_load_cylinder (struct super_block *, unsigned); 805extern void ufs_put_cylinder (struct super_block *, unsigned); 806 807/* dir.c */ 808extern const struct inode_operations ufs_dir_inode_operations; 809extern int ufs_add_link (struct dentry *, struct inode *); 810extern ino_t ufs_inode_by_name(struct inode *, struct dentry *); 811extern int ufs_make_empty(struct inode *, struct inode *); 812extern struct ufs_dir_entry *ufs_find_entry(struct inode *, struct dentry *, struct page **); 813extern int ufs_delete_entry(struct inode *, struct ufs_dir_entry *, struct page *); 814extern int ufs_empty_dir (struct inode *); 815extern struct ufs_dir_entry *ufs_dotdot(struct inode *, struct page **); 816extern void ufs_set_link(struct inode *dir, struct ufs_dir_entry *de, 817 struct page *page, struct inode *inode); 818 819/* file.c */ 820extern const struct inode_operations ufs_file_inode_operations; 821extern const struct file_operations ufs_file_operations; 822 823extern const struct address_space_operations ufs_aops; 824 825/* ialloc.c */ 826extern void ufs_free_inode (struct inode *inode); 827extern struct inode * ufs_new_inode (struct inode *, int); 828 829/* inode.c */ 830extern void ufs_read_inode (struct inode *); 831extern void ufs_put_inode (struct inode *); 832extern int ufs_write_inode (struct inode *, int); 833extern int ufs_sync_inode (struct inode *); 834extern void ufs_delete_inode (struct inode *); 835extern struct buffer_head * ufs_bread (struct inode *, unsigned, int, int *); 836extern int ufs_getfrag_block (struct inode *inode, sector_t fragment, struct buffer_head *bh_result, int create); 837 838/* namei.c */ 839extern const struct file_operations ufs_dir_operations; 840 841/* super.c */ 842extern void ufs_warning (struct super_block *, const char *, const char *, ...) __attribute__ ((format (printf, 3, 4))); 843extern void ufs_error (struct super_block *, const char *, const char *, ...) __attribute__ ((format (printf, 3, 4))); 844extern void ufs_panic (struct super_block *, const char *, const char *, ...) __attribute__ ((format (printf, 3, 4))); 845 846/* symlink.c */ 847extern const struct inode_operations ufs_fast_symlink_inode_operations; 848 849/* truncate.c */ 850extern int ufs_truncate (struct inode *, loff_t); 851 852static inline struct ufs_sb_info *UFS_SB(struct super_block *sb) 853{ 854 return sb->s_fs_info; 855} 856 857static inline struct ufs_inode_info *UFS_I(struct inode *inode) 858{ 859 return container_of(inode, struct ufs_inode_info, vfs_inode); 860} 861 862/* 863 * Give cylinder group number for a file system block. 864 * Give cylinder group block number for a file system block. 865 */ 866/* #define ufs_dtog(d) ((d) / uspi->s_fpg) */ 867static inline u64 ufs_dtog(struct ufs_sb_private_info * uspi, u64 b) 868{ 869 do_div(b, uspi->s_fpg); 870 return b; 871} 872/* #define ufs_dtogd(d) ((d) % uspi->s_fpg) */ 873static inline u32 ufs_dtogd(struct ufs_sb_private_info * uspi, u64 b) 874{ 875 return do_div(b, uspi->s_fpg); 876} 877 878#endif /* __KERNEL__ */ 879 880#endif /* __LINUX_UFS_FS_H */ 881