include/linux/ufs_fs.h

   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  */
  26
  27 #ifndef __LINUX_UFS_FS_H
  28 #define __LINUX_UFS_FS_H
  29
  30 #include <linux/types.h>
  31 #include <linux/kernel.h>
  32 #include <linux/time.h>
  33 #include <linux/stat.h>
  34
  35 #define UFS_BBLOCK 0
  36 #define UFS_BBSIZE 8192
  37 #define UFS_SBLOCK 8192
  38 #define UFS_SBSIZE 8192
  39
  40 #define UFS_SECTOR_SIZE 512
  41 #define UFS_SECTOR_BITS 9
  42 #define UFS_MAGIC 0x00011954
  43 #define UFS_CIGAM 0x54190100 /* byteswapped MAGIC */
  44
  45
  46 /* HP specific MAGIC values */
  47
  48 #define UFS_MAGIC_LFN   0x00095014 /* fs supports filenames > 14 chars */
  49 #define UFS_CIGAM_LFN   0x14500900 /* srahc 41 < semanelif stroppus sf */
  50
  51 #define UFS_MAGIC_SEC   0x00612195 /* B1 security fs */
  52 #define UFS_CIGAM_SEC   0x95216100
  53
  54 #define UFS_MAGIC_FEA   0x00195612 /* fs_featurebits supported */
  55 #define UFS_CIGAM_FEA   0x12561900
  56
  57 #define UFS_MAGIC_4GB   0x05231994 /* fs > 4 GB && fs_featurebits */
  58 #define UFS_CIGAM_4GB   0x94192305
  59
  60 /* Seems somebody at HP goofed here. B1 and lfs are both 0x2 !?! */
  61 #define UFS_FSF_LFN     0x00000001 /* long file names */
  62 #define UFS_FSF_B1      0x00000002 /* B1 security */
  63 #define UFS_FSF_LFS     0x00000002 /* large files */
  64 #define UFS_FSF_LUID    0x00000004 /* large UIDs */
  65
  66 /* End of HP stuff */
  67
  68
  69 #define UFS_BSIZE       8192
  70 #define UFS_MINBSIZE    4096
  71 #define UFS_FSIZE       1024
  72 #define UFS_MAXFRAG     (UFS_BSIZE / UFS_FSIZE)
  73
  74 #define UFS_NDADDR 12
  75 #define UFS_NINDIR 3
  76
  77 #define UFS_IND_BLOCK   (UFS_NDADDR + 0)
  78 #define UFS_DIND_BLOCK  (UFS_NDADDR + 1)
  79 #define UFS_TIND_BLOCK  (UFS_NDADDR + 2)
  80
  81 #define UFS_NDIR_FRAGMENT (UFS_NDADDR << uspi->s_fpbshift)
  82 #define UFS_IND_FRAGMENT (UFS_IND_BLOCK << uspi->s_fpbshift)
  83 #define UFS_DIND_FRAGMENT (UFS_DIND_BLOCK << uspi->s_fpbshift)
  84 #define UFS_TIND_FRAGMENT (UFS_TIND_BLOCK << uspi->s_fpbshift)
  85
  86 #define UFS_ROOTINO 2
  87 #define UFS_FIRST_INO (UFS_ROOTINO + 1)
  88
  89 #define UFS_USEEFT  ((__u16)65535)
  90
  91 #define UFS_FSOK      0x7c269d38
  92 #define UFS_FSACTIVE  ((char)0x00)
  93 #define UFS_FSCLEAN   ((char)0x01)
  94 #define UFS_FSSTABLE  ((char)0x02)
  95 #define UFS_FSOSF1    ((char)0x03)      /* is this correct for DEC OSF/1? */
  96 #define UFS_FSBAD     ((char)0xff)
  97
  98 /* From here to next blank line, s_flags for ufs_sb_info */
  99 /* endianness */
 100 #define UFS_BYTESEX             0x00000001      /* mask; leave room to 0xF */
 101 #if defined(__LITTLE_ENDIAN) || defined(__BIG_ENDIAN)
 102 /* these are for sane architectures */
 103 #define UFS_NATIVE_ENDIAN       0x00000000
 104 #define UFS_SWABBED_ENDIAN      0x00000001
 105 #else
 106 /* these are for pervert architectures */
 107 #define UFS_LITTLE_ENDIAN       0x00000000
 108 #define UFS_BIG_ENDIAN          0x00000001
 109 #endif
 110 /* directory entry encoding */
 111 #define UFS_DE_MASK             0x00000010      /* mask for the following */
 112 #define UFS_DE_OLD              0x00000000
 113 #define UFS_DE_44BSD            0x00000010
 114 /* uid encoding */
 115 #define UFS_UID_MASK            0x00000060      /* mask for the following */
 116 #define UFS_UID_OLD             0x00000000
 117 #define UFS_UID_44BSD           0x00000020
 118 #define UFS_UID_EFT             0x00000040
 119 /* superblock state encoding */
 120 #define UFS_ST_MASK             0x00000700      /* mask for the following */
 121 #define UFS_ST_OLD              0x00000000
 122 #define UFS_ST_44BSD            0x00000100
 123 #define UFS_ST_SUN              0x00000200
 124 #define UFS_ST_SUNx86           0x00000400
 125 /*cylinder group encoding */
 126 #define UFS_CG_MASK             0x00003000      /* mask for the following */
 127 #define UFS_CG_OLD              0x00000000
 128 #define UFS_CG_44BSD            0x00002000
 129 #define UFS_CG_SUN              0x00001000
 130
 131 /* fs_inodefmt options */
 132 #define UFS_42INODEFMT  -1
 133 #define UFS_44INODEFMT  2
 134
 135 /* mount options */
 136 #define UFS_MOUNT_ONERROR               0x0000000F
 137 #define UFS_MOUNT_ONERROR_PANIC         0x00000001
 138 #define UFS_MOUNT_ONERROR_LOCK          0x00000002
 139 #define UFS_MOUNT_ONERROR_UMOUNT        0x00000004
 140 #define UFS_MOUNT_ONERROR_REPAIR        0x00000008
 141
 142 #define UFS_MOUNT_UFSTYPE               0x00000FF0
 143 #define UFS_MOUNT_UFSTYPE_OLD           0x00000010
 144 #define UFS_MOUNT_UFSTYPE_44BSD         0x00000020
 145 #define UFS_MOUNT_UFSTYPE_SUN           0x00000040
 146 #define UFS_MOUNT_UFSTYPE_NEXTSTEP      0x00000080
 147 #define UFS_MOUNT_UFSTYPE_NEXTSTEP_CD   0x00000100
 148 #define UFS_MOUNT_UFSTYPE_OPENSTEP      0x00000200
 149 #define UFS_MOUNT_UFSTYPE_SUNx86        0x00000400
 150 #define UFS_MOUNT_UFSTYPE_HP            0x00000800
 151
 152 #define ufs_clear_opt(o,opt)    o &= ~UFS_MOUNT_##opt
 153 #define ufs_set_opt(o,opt)      o |= UFS_MOUNT_##opt
 154 #define ufs_test_opt(o,opt)     ((o) & UFS_MOUNT_##opt)
 155
 156 /*
 157  * MINFREE gives the minimum acceptable percentage of file system
 158  * blocks which may be free. If the freelist drops below this level
 159  * only the superuser may continue to allocate blocks. This may
 160  * be set to 0 if no reserve of free blocks is deemed necessary,
 161  * however throughput drops by fifty percent if the file system
 162  * is run at between 95% and 100% full; thus the minimum default
 163  * value of fs_minfree is 5%. However, to get good clustering
 164  * performance, 10% is a better choice. hence we use 10% as our
 165  * default value. With 10% free space, fragmentation is not a
 166  * problem, so we choose to optimize for time.
 167  */
 168 #define UFS_MINFREE         5
 169 #define UFS_DEFAULTOPT      UFS_OPTTIME
 170
 171 /*
 172  * Turn file system block numbers into disk block addresses.
 173  * This maps file system blocks to device size blocks.
 174  */
 175 #define ufs_fsbtodb(uspi, b)    ((b) << (uspi)->s_fsbtodb)
 176 #define ufs_dbtofsb(uspi, b)    ((b) >> (uspi)->s_fsbtodb)
 177
 178 /*
 179  * Cylinder group macros to locate things in cylinder groups.
 180  * They calc file system addresses of cylinder group data structures.
 181  */
 182 #define ufs_cgbase(c)   (uspi->s_fpg * (c))
 183 #define ufs_cgstart(c)  (ufs_cgbase(c)  + uspi->s_cgoffset * ((c) & ~uspi->s_cgmask))
 184 #define ufs_cgsblock(c) (ufs_cgstart(c) + uspi->s_sblkno)       /* super blk */
 185 #define ufs_cgcmin(c)   (ufs_cgstart(c) + uspi->s_cblkno)       /* cg block */
 186 #define ufs_cgimin(c)   (ufs_cgstart(c) + uspi->s_iblkno)       /* inode blk */
 187 #define ufs_cgdmin(c)   (ufs_cgstart(c) + uspi->s_dblkno)       /* 1st data */
 188
 189 /*
 190  * Macros for handling inode numbers:
 191  *     inode number to file system block offset.
 192  *     inode number to cylinder group number.
 193  *     inode number to file system block address.
 194  */
 195 #define ufs_inotocg(x)          ((x) / uspi->s_ipg)
 196 #define ufs_inotocgoff(x)       ((x) % uspi->s_ipg)
 197 #define ufs_inotofsba(x)        (ufs_cgimin(ufs_inotocg(x)) + ufs_inotocgoff(x) / uspi->s_inopf)
 198 #define ufs_inotofsbo(x)        ((x) % uspi->s_inopf)
 199
 200 /*
 201  * Give cylinder group number for a file system block.
 202  * Give cylinder group block number for a file system block.
 203  */
 204 #define ufs_dtog(d)     ((d) / uspi->s_fpg)
 205 #define ufs_dtogd(d)    ((d) % uspi->s_fpg)
 206
 207 /*
 208  * Compute the cylinder and rotational position of a cyl block addr.
 209  */
 210 #define ufs_cbtocylno(bno) \
 211         ((bno) * uspi->s_nspf / uspi->s_spc)
 212 #define ufs_cbtorpos(bno) \
 213         ((((bno) * uspi->s_nspf % uspi->s_spc / uspi->s_nsect \
 214         * uspi->s_trackskew + (bno) * uspi->s_nspf % uspi->s_spc \
 215         % uspi->s_nsect * uspi->s_interleave) % uspi->s_nsect \
 216         * uspi->s_nrpos) / uspi->s_npsect)
 217
 218 /*
 219  * The following macros optimize certain frequently calculated
 220  * quantities by using shifts and masks in place of divisions
 221  * modulos and multiplications.
 222  */
 223 #define ufs_blkoff(loc)         ((loc) & uspi->s_qbmask)
 224 #define ufs_fragoff(loc)        ((loc) & uspi->s_qfmask)
 225 #define ufs_lblktosize(blk)     ((blk) << uspi->s_bshift)
 226 #define ufs_lblkno(loc)         ((loc) >> uspi->s_bshift)
 227 #define ufs_numfrags(loc)       ((loc) >> uspi->s_fshift)
 228 #define ufs_blkroundup(size)    (((size) + uspi->s_qbmask) & uspi->s_bmask)
 229 #define ufs_fragroundup(size)   (((size) + uspi->s_qfmask) & uspi->s_fmask)
 230 #define ufs_fragstoblks(frags)  ((frags) >> uspi->s_fpbshift)
 231 #define ufs_blkstofrags(blks)   ((blks) << uspi->s_fpbshift)
 232 #define ufs_fragnum(fsb)        ((fsb) & uspi->s_fpbmask)
 233 #define ufs_blknum(fsb)         ((fsb) & ~uspi->s_fpbmask)
 234
 235 #define UFS_MAXNAMLEN 255
 236 #define UFS_MAXMNTLEN 512
 237 #define UFS_MAXCSBUFS 31
 238 #define UFS_LINK_MAX 32000
 239
 240 /*
 241  * UFS_DIR_PAD defines the directory entries boundaries
 242  * (must be a multiple of 4)
 243  */
 244 #define UFS_DIR_PAD                     4
 245 #define UFS_DIR_ROUND                   (UFS_DIR_PAD - 1)
 246 #define UFS_DIR_REC_LEN(name_len)       (((name_len) + 1 + 8 + UFS_DIR_ROUND) & ~UFS_DIR_ROUND)
 247
 248 struct ufs_timeval {
 249         __s32   tv_sec;
 250         __s32   tv_usec;
 251 };
 252
 253 struct ufs_dir_entry {
 254         __u32  d_ino;                   /* inode number of this entry */
 255         __u16  d_reclen;                /* length of this entry */
 256         union {
 257                 __u16   d_namlen;               /* actual length of d_name */
 258                 struct {
 259                         __u8    d_type;         /* file type */
 260                         __u8    d_namlen;       /* length of string in d_name */
 261                 } d_44;
 262         } d_u;
 263         __u8    d_name[UFS_MAXNAMLEN + 1];      /* file name */
 264 };
 265
 266 struct ufs_csum {
 267         __u32   cs_ndir;        /* number of directories */
 268         __u32   cs_nbfree;      /* number of free blocks */
 269         __u32   cs_nifree;      /* number of free inodes */
 270         __u32   cs_nffree;      /* number of free frags */
 271 };
 272
 273 /*
 274  * This is the actual superblock, as it is laid out on the disk.
 275  */
 276 struct ufs_super_block {
 277         __u32   fs_link;        /* UNUSED */
 278         __u32   fs_rlink;       /* UNUSED */
 279         __u32   fs_sblkno;      /* addr of super-block in filesys */
 280         __u32   fs_cblkno;      /* offset of cyl-block in filesys */
 281         __u32   fs_iblkno;      /* offset of inode-blocks in filesys */
 282         __u32   fs_dblkno;      /* offset of first data after cg */
 283         __u32   fs_cgoffset;    /* cylinder group offset in cylinder */
 284         __u32   fs_cgmask;      /* used to calc mod fs_ntrak */
 285         __u32   fs_time;        /* last time written -- time_t */
 286         __u32   fs_size;        /* number of blocks in fs */
 287         __u32   fs_dsize;       /* number of data blocks in fs */
 288         __u32   fs_ncg;         /* number of cylinder groups */
 289         __u32   fs_bsize;       /* size of basic blocks in fs */
 290         __u32   fs_fsize;       /* size of frag blocks in fs */
 291         __u32   fs_frag;        /* number of frags in a block in fs */
 292 /* these are configuration parameters */
 293         __u32   fs_minfree;     /* minimum percentage of free blocks */
 294         __u32   fs_rotdelay;    /* num of ms for optimal next block */
 295         __u32   fs_rps;         /* disk revolutions per second */
 296 /* these fields can be computed from the others */
 297         __u32   fs_bmask;       /* ``blkoff'' calc of blk offsets */
 298         __u32   fs_fmask;       /* ``fragoff'' calc of frag offsets */
 299         __u32   fs_bshift;      /* ``lblkno'' calc of logical blkno */
 300         __u32   fs_fshift;      /* ``numfrags'' calc number of frags */
 301 /* these are configuration parameters */
 302         __u32   fs_maxcontig;   /* max number of contiguous blks */
 303         __u32   fs_maxbpg;      /* max number of blks per cyl group */
 304 /* these fields can be computed from the others */
 305         __u32   fs_fragshift;   /* block to frag shift */
 306         __u32   fs_fsbtodb;     /* fsbtodb and dbtofsb shift constant */
 307         __u32   fs_sbsize;      /* actual size of super block */
 308         __u32   fs_csmask;      /* csum block offset */
 309         __u32   fs_csshift;     /* csum block number */
 310         __u32   fs_nindir;      /* value of NINDIR */
 311         __u32   fs_inopb;       /* value of INOPB */
 312         __u32   fs_nspf;        /* value of NSPF */
 313 /* yet another configuration parameter */
 314         __u32   fs_optim;       /* optimization preference, see below */
 315 /* these fields are derived from the hardware */
 316         union {
 317                 struct {
 318                         __u32   fs_npsect;      /* # sectors/track including spares */
 319                 } fs_sun;
 320                 struct {
 321                         __s32   fs_state;       /* file system state time stamp */
 322                 } fs_sunx86;
 323         } fs_u1;
 324         __u32   fs_interleave;  /* hardware sector interleave */
 325         __u32   fs_trackskew;   /* sector 0 skew, per track */
 326 /* a unique id for this filesystem (currently unused and unmaintained) */
 327 /* In 4.3 Tahoe this space is used by fs_headswitch and fs_trkseek */
 328 /* Neither of those fields is used in the Tahoe code right now but */
 329 /* there could be problems if they are.                            */
 330         __u32   fs_id[2];       /* file system id */
 331 /* sizes determined by number of cylinder groups and their sizes */
 332         __u32   fs_csaddr;      /* blk addr of cyl grp summary area */
 333         __u32   fs_cssize;      /* size of cyl grp summary area */
 334         __u32   fs_cgsize;      /* cylinder group size */
 335 /* these fields are derived from the hardware */
 336         __u32   fs_ntrak;       /* tracks per cylinder */
 337         __u32   fs_nsect;       /* sectors per track */
 338         __u32   fs_spc;         /* sectors per cylinder */
 339 /* this comes from the disk driver partitioning */
 340         __u32   fs_ncyl;        /* cylinders in file system */
 341 /* these fields can be computed from the others */
 342         __u32   fs_cpg;         /* cylinders per group */
 343         __u32   fs_ipg;         /* inodes per group */
 344         __u32   fs_fpg;         /* blocks per group * fs_frag */
 345 /* this data must be re-computed after crashes */
 346         struct ufs_csum fs_cstotal;     /* cylinder summary information */
 347 /* these fields are cleared at mount time */
 348         __s8    fs_fmod;        /* super block modified flag */
 349         __s8    fs_clean;       /* file system is clean flag */
 350         __s8    fs_ronly;       /* mounted read-only flag */
 351         __s8    fs_flags;       /* currently unused flag */
 352         __s8    fs_fsmnt[UFS_MAXMNTLEN];        /* name mounted on */
 353 /* these fields retain the current block allocation info */
 354         __u32   fs_cgrotor;     /* last cg searched */
 355         __u32   fs_csp[UFS_MAXCSBUFS];  /* list of fs_cs info buffers */
 356         __u32   fs_maxcluster;
 357         __u32   fs_cpc;         /* cyl per cycle in postbl */
 358         __u16   fs_opostbl[16][8];      /* old rotation block list head */
 359         union {
 360                 struct {
 361                         __s32   fs_sparecon[53];/* reserved for future constants */
 362                         __s32   fs_reclaim;
 363                         __s32   fs_sparecon2[1];
 364                         __s32   fs_state;       /* file system state time stamp */
 365                         __u32   fs_qbmask[2];   /* ~usb_bmask */
 366                         __u32   fs_qfmask[2];   /* ~usb_fmask */
 367                 } fs_sun;
 368                 struct {
 369                         __s32   fs_sparecon[53];/* reserved for future constants */
 370                         __s32   fs_reclaim;
 371                         __s32   fs_sparecon2[1];
 372                         __u32   fs_npsect;      /* # sectors/track including spares */
 373                         __u32   fs_qbmask[2];   /* ~usb_bmask */
 374                         __u32   fs_qfmask[2];   /* ~usb_fmask */
 375                 } fs_sunx86;
 376                 struct {
 377                         __s32   fs_sparecon[50];/* reserved for future constants */
 378                         __s32   fs_contigsumsize;/* size of cluster summary array */
 379                         __s32   fs_maxsymlinklen;/* max length of an internal symlink */
 380                         __s32   fs_inodefmt;    /* format of on-disk inodes */
 381                         __u32   fs_maxfilesize[2];      /* max representable file size */
 382                         __u32   fs_qbmask[2];   /* ~usb_bmask */
 383                         __u32   fs_qfmask[2];   /* ~usb_fmask */
 384                         __s32   fs_state;       /* file system state time stamp */
 385                 } fs_44;
 386         } fs_u2;
 387         __s32   fs_postblformat;        /* format of positional layout tables */
 388         __s32   fs_nrpos;               /* number of rotational positions */
 389         __s32   fs_postbloff;           /* (__s16) rotation block list head */
 390         __s32   fs_rotbloff;            /* (__u8) blocks for each rotation */
 391         __s32   fs_magic;               /* magic number */
 392         __u8    fs_space[1];            /* list of blocks for each rotation */
 393 };
 394
 395 /*
 396  * Preference for optimization.
 397  */
 398 #define UFS_OPTTIME     0       /* minimize allocation time */
 399 #define UFS_OPTSPACE    1       /* minimize disk fragmentation */
 400
 401 /*
 402  * Rotational layout table format types
 403  */
 404 #define UFS_42POSTBLFMT         -1      /* 4.2BSD rotational table format */
 405 #define UFS_DYNAMICPOSTBLFMT    1       /* dynamic rotational table format */
 406
 407 /*
 408  * Convert cylinder group to base address of its global summary info.
 409  */
 410 #define fs_cs(indx) \
 411         u.ufs_sb.s_csp[(indx) >> uspi->s_csshift][(indx) & ~uspi->s_csmask]
 412
 413 /*
 414  * Cylinder group block for a file system.
 415  *
 416  * Writable fields in the cylinder group are protected by the associated
 417  * super block lock fs->fs_lock.
 418  */
 419 #define CG_MAGIC        0x090255
 420 #define ufs_cg_chkmagic(ucg)    (SWAB32((ucg)->cg_magic) == CG_MAGIC)
 421
 422 /*
 423  * size of this structure is 172 B
 424  */
 425 struct  ufs_cylinder_group {
 426         __u32   cg_link;                /* linked list of cyl groups */
 427         __u32   cg_magic;               /* magic number */
 428         __u32   cg_time;                /* time last written */
 429         __u32   cg_cgx;                 /* we are the cgx'th cylinder group */
 430         __u16   cg_ncyl;                /* number of cyl's this cg */
 431         __u16   cg_niblk;               /* number of inode blocks this cg */
 432         __u32   cg_ndblk;               /* number of data blocks this cg */
 433         struct  ufs_csum cg_cs;         /* cylinder summary information */
 434         __u32   cg_rotor;               /* position of last used block */
 435         __u32   cg_frotor;              /* position of last used frag */
 436         __u32   cg_irotor;              /* position of last used inode */
 437         __u32   cg_frsum[UFS_MAXFRAG];  /* counts of available frags */
 438         __u32   cg_btotoff;             /* (__u32) block totals per cylinder */
 439         __u32   cg_boff;                /* (short) free block positions */
 440         __u32   cg_iusedoff;            /* (char) used inode map */
 441         __u32   cg_freeoff;             /* (u_char) free block map */
 442         __u32   cg_nextfreeoff;         /* (u_char) next available space */
 443         union {
 444                 struct {
 445                         __u32   cg_clustersumoff;       /* (u_int32) counts of avail clusters */
 446                         __u32   cg_clusteroff;          /* (u_int8) free cluster map */
 447                         __u32   cg_nclusterblks;        /* number of clusters this cg */
 448                         __u32   cg_sparecon[13];        /* reserved for future use */
 449                 } cg_44;
 450                 __u32   cg_sparecon[16];        /* reserved for future use */
 451         } cg_u;
 452         __u8    cg_space[1];            /* space for cylinder group maps */
 453 /* actually longer */
 454 };
 455
 456 /*
 457  * structure of an on-disk inode
 458  */
 459 struct ufs_inode {
 460         __u16   ui_mode;                /*  0x0 */
 461         __u16   ui_nlink;               /*  0x2 */
 462         union {
 463                 struct {
 464                         __u16   ui_suid;        /*  0x4 */
 465                         __u16   ui_sgid;        /*  0x6 */
 466                 } oldids;
 467                 __u32   ui_inumber;             /*  0x4 lsf: inode number */
 468                 __u32   ui_author;              /*  0x4 GNU HURD: author */
 469         } ui_u1;
 470         __u64   ui_size;                /*  0x8 */
 471         struct ufs_timeval ui_atime;    /* 0x10 access */
 472         struct ufs_timeval ui_mtime;    /* 0x18 modification */
 473         struct ufs_timeval ui_ctime;    /* 0x20 creation */
 474         union {
 475                 struct {
 476                         __u32   ui_db[UFS_NDADDR];/* 0x28 data blocks */
 477                         __u32   ui_ib[UFS_NINDIR];/* 0x58 indirect blocks */
 478                 } ui_addr;
 479                 __u8    ui_symlink[4*(UFS_NDADDR+UFS_NINDIR)];/* 0x28 fast symlink */
 480         } ui_u2;
 481         __u32   ui_flags;               /* 0x64 immutable, append-only... */
 482         __u32   ui_blocks;              /* 0x68 blocks in use */
 483         __u32   ui_gen;                 /* 0x6c like ext2 i_version, for NFS support */
 484         union {
 485                 struct {
 486                         __u32   ui_shadow;      /* 0x70 shadow inode with security data */
 487                         __u32   ui_uid;         /* 0x74 long EFT version of uid */
 488                         __u32   ui_gid;         /* 0x78 long EFT version of gid */
 489                         __u32   ui_oeftflag;    /* 0x7c reserved */
 490                 } ui_sun;
 491                 struct {
 492                         __u32   ui_uid;         /* 0x70 File owner */
 493                         __u32   ui_gid;         /* 0x74 File group */
 494                         __s32   ui_spare[2];    /* 0x78 reserved */
 495                 } ui_44;
 496                 struct {
 497                         __u32   ui_uid;         /* 0x70 */
 498                         __u32   ui_gid;         /* 0x74 */
 499                         __u16   ui_modeh;       /* 0x78 mode high bits */
 500                         __u16   ui_spare;       /* 0x7A unused */
 501                         __u32   ui_trans;       /* 0x7c filesystem translator */
 502                 } ui_hurd;
 503         } ui_u3;
 504 };
 505
 506 /* FreeBSD has these in sys/stat.h */
 507 /* ui_flags that can be set by a file owner */
 508 #define UFS_UF_SETTABLE   0x0000ffff
 509 #define UFS_UF_NODUMP     0x00000001  /* do not dump */
 510 #define UFS_UF_IMMUTABLE  0x00000002  /* immutable (can't "change") */
 511 #define UFS_UF_APPEND     0x00000004  /* append-only */
 512 #define UFS_UF_OPAQUE     0x00000008  /* directory is opaque (unionfs) */
 513 #define UFS_UF_NOUNLINK   0x00000010  /* can't be removed or renamed */
 514 /* ui_flags that only root can set */
 515 #define UFS_SF_SETTABLE   0xffff0000
 516 #define UFS_SF_ARCHIVED   0x00010000  /* archived */
 517 #define UFS_SF_IMMUTABLE  0x00020000  /* immutable (can't "change") */
 518 #define UFS_SF_APPEND     0x00040000  /* append-only */
 519 #define UFS_SF_NOUNLINK   0x00100000  /* can't be removed or renamed */
 520
 521 #ifdef __KERNEL__
 522
 523 /* balloc.c */
 524 extern void ufs_free_fragments (struct inode *, unsigned, unsigned);
 525 extern void ufs_free_blocks (struct inode *, unsigned, unsigned);
 526 extern unsigned ufs_new_fragments (struct inode *, u32 *, unsigned, unsigned, unsigned, int *);
 527
 528 /* cylinder.c */
 529 extern struct ufs_cg_private_info * ufs_load_cylinder (struct super_block *, unsigned);
 530 extern void ufs_put_cylinder (struct super_block *, unsigned);
 531
 532 /* dir.c */
 533 extern struct inode_operations ufs_dir_inode_operations;
 534 extern int ufs_check_dir_entry (const char *, struct inode *, struct ufs_dir_entry *, struct buffer_head *, unsigned long);
 535
 536 /* file.c */
 537 extern struct inode_operations ufs_file_inode_operations;
 538 extern struct file_operations ufs_file_operations;
 539
 540 extern struct address_space_operations ufs_aops;
 541
 542 /* ialloc.c */
 543 extern void ufs_free_inode (struct inode *inode);
 544 extern struct inode * ufs_new_inode (const struct inode *, int, int *);
 545
 546 /* inode.c */
 547 extern int ufs_frag_map (struct inode *, int);
 548 extern void ufs_read_inode (struct inode *);
 549 extern void ufs_put_inode (struct inode *);
 550 extern void ufs_write_inode (struct inode *, int);
 551 extern int ufs_sync_inode (struct inode *);
 552 extern void ufs_delete_inode (struct inode *);
 553 extern struct buffer_head * ufs_getfrag (struct inode *, unsigned, int, int *);
 554 extern struct buffer_head * ufs_bread (struct inode *, unsigned, int, int *);
 555
 556 /* namei.c */
 557 extern struct file_operations ufs_dir_operations;
 558
 559 /* super.c */
 560 extern struct file_system_type ufs_fs_type;
 561 extern void ufs_warning (struct super_block *, const char *, const char *, ...) __attribute__ ((format (printf, 3, 4)));
 562 extern void ufs_error (struct super_block *, const char *, const char *, ...) __attribute__ ((format (printf, 3, 4)));
 563 extern void ufs_panic (struct super_block *, const char *, const char *, ...) __attribute__ ((format (printf, 3, 4)));
 564 extern void ufs_write_super (struct super_block *);
 565
 566 /* symlink.c */
 567 extern struct inode_operations ufs_fast_symlink_inode_operations;
 568
 569 /* truncate.c */
 570 extern void ufs_truncate (struct inode *);
 571
 572 #endif  /* __KERNEL__ */
 573
 574 #endif /* __LINUX_UFS_FS_H */