extlinux/xfs_sb.h

   1 /*
   2  * Taken from Linux kernel tree (linux/fs/xfs)
   3  *
   4  * Copyright (c) 2000-2005 Silicon Graphics, Inc.
   5  * All Rights Reserved.
   6  *
   7  * Copyright (c) 2012 Paulo Alcantara <pcacjr@zytor.com>
   8  *
   9  * This program is free software; you can redistribute it and/or
  10  * modify it under the terms of the GNU General Public License as
  11  * published by the Free Software Foundation.
  12  *
  13  * This program is distributed in the hope that it would be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; if not, write the Free Software Foundation,
  20  * Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  21  */
  22 #ifndef XFS_SB_H_
  23 #define XFS_SB_H__
  24
  25 #include <stddef.h>
  26
  27 #include <sys/types.h>
  28 #include <uuid/uuid.h>
  29
  30 /*
  31  * Super block
  32  * Fits into a sector-sized buffer at address 0 of each allocation group.
  33  * Only the first of these is ever updated except during growfs.
  34  */
  35
  36 struct xfs_buf;
  37 struct xfs_mount;
  38
  39 #define XFS_SB_MAGIC            "XFSB"          /* 'XFSB' */
  40 #define XFS_SB_VERSION_1        1               /* 5.3, 6.0.1, 6.1 */
  41 #define XFS_SB_VERSION_2        2               /* 6.2 - attributes */
  42 #define XFS_SB_VERSION_3        3               /* 6.2 - new inode version */
  43 #define XFS_SB_VERSION_4        4               /* 6.2+ - bitmask version */
  44 #define XFS_SB_VERSION_NUMBITS          0x000f
  45 #define XFS_SB_VERSION_ALLFBITS         0xfff0
  46 #define XFS_SB_VERSION_SASHFBITS        0xf000
  47 #define XFS_SB_VERSION_REALFBITS        0x0ff0
  48 #define XFS_SB_VERSION_ATTRBIT          0x0010
  49 #define XFS_SB_VERSION_NLINKBIT         0x0020
  50 #define XFS_SB_VERSION_QUOTABIT         0x0040
  51 #define XFS_SB_VERSION_ALIGNBIT         0x0080
  52 #define XFS_SB_VERSION_DALIGNBIT        0x0100
  53 #define XFS_SB_VERSION_SHAREDBIT        0x0200
  54 #define XFS_SB_VERSION_LOGV2BIT         0x0400
  55 #define XFS_SB_VERSION_SECTORBIT        0x0800
  56 #define XFS_SB_VERSION_EXTFLGBIT        0x1000
  57 #define XFS_SB_VERSION_DIRV2BIT         0x2000
  58 #define XFS_SB_VERSION_BORGBIT          0x4000  /* ASCII only case-insens. */
  59 #define XFS_SB_VERSION_MOREBITSBIT      0x8000
  60 #define XFS_SB_VERSION_OKSASHFBITS      \
  61         (XFS_SB_VERSION_EXTFLGBIT | \
  62          XFS_SB_VERSION_DIRV2BIT | \
  63          XFS_SB_VERSION_BORGBIT)
  64 #define XFS_SB_VERSION_OKREALFBITS      \
  65         (XFS_SB_VERSION_ATTRBIT | \
  66          XFS_SB_VERSION_NLINKBIT | \
  67          XFS_SB_VERSION_QUOTABIT | \
  68          XFS_SB_VERSION_ALIGNBIT | \
  69          XFS_SB_VERSION_DALIGNBIT | \
  70          XFS_SB_VERSION_SHAREDBIT | \
  71          XFS_SB_VERSION_LOGV2BIT | \
  72          XFS_SB_VERSION_SECTORBIT | \
  73          XFS_SB_VERSION_MOREBITSBIT)
  74 #define XFS_SB_VERSION_OKREALBITS       \
  75         (XFS_SB_VERSION_NUMBITS | \
  76          XFS_SB_VERSION_OKREALFBITS | \
  77          XFS_SB_VERSION_OKSASHFBITS)
  78
  79 /*
  80  * There are two words to hold XFS "feature" bits: the original
  81  * word, sb_versionnum, and sb_features2.  Whenever a bit is set in
  82  * sb_features2, the feature bit XFS_SB_VERSION_MOREBITSBIT must be set.
  83  *
  84  * These defines represent bits in sb_features2.
  85  */
  86 #define XFS_SB_VERSION2_REALFBITS       0x00ffffff      /* Mask: features */
  87 #define XFS_SB_VERSION2_RESERVED1BIT    0x00000001
  88 #define XFS_SB_VERSION2_LAZYSBCOUNTBIT  0x00000002      /* Superblk counters */
  89 #define XFS_SB_VERSION2_RESERVED4BIT    0x00000004
  90 #define XFS_SB_VERSION2_ATTR2BIT        0x00000008      /* Inline attr rework */
  91 #define XFS_SB_VERSION2_PARENTBIT       0x00000010      /* parent pointers */
  92 #define XFS_SB_VERSION2_PROJID32BIT     0x00000080      /* 32 bit project id */
  93
  94 #define XFS_SB_VERSION2_OKREALFBITS     \
  95         (XFS_SB_VERSION2_LAZYSBCOUNTBIT | \
  96          XFS_SB_VERSION2_ATTR2BIT       | \
  97          XFS_SB_VERSION2_PROJID32BIT)
  98 #define XFS_SB_VERSION2_OKSASHFBITS     \
  99         (0)
 100 #define XFS_SB_VERSION2_OKREALBITS      \
 101         (XFS_SB_VERSION2_OKREALFBITS |  \
 102          XFS_SB_VERSION2_OKSASHFBITS )
 103
 104 /*
 105  * Superblock - in core version.  Must match the ondisk version below.
 106  * Must be padded to 64 bit alignment.
 107  */
 108 typedef struct xfs_sb {
 109         uint32_t        sb_magicnum;    /* magic number == XFS_SB_MAGIC */
 110         uint32_t        sb_blocksize;   /* logical block size, bytes */
 111         xfs_drfsbno_t   sb_dblocks;     /* number of data blocks */
 112         xfs_drfsbno_t   sb_rblocks;     /* number of realtime blocks */
 113         xfs_drtbno_t    sb_rextents;    /* number of realtime extents */
 114         uuid_t          sb_uuid;        /* file system unique id */
 115         xfs_dfsbno_t    sb_logstart;    /* starting block of log if internal */
 116         xfs_ino_t       sb_rootino;     /* root inode number */
 117         xfs_ino_t       sb_rbmino;      /* bitmap inode for realtime extents */
 118         xfs_ino_t       sb_rsumino;     /* summary inode for rt bitmap */
 119         xfs_agblock_t   sb_rextsize;    /* realtime extent size, blocks */
 120         xfs_agblock_t   sb_agblocks;    /* size of an allocation group */
 121         xfs_agnumber_t  sb_agcount;     /* number of allocation groups */
 122         xfs_extlen_t    sb_rbmblocks;   /* number of rt bitmap blocks */
 123         xfs_extlen_t    sb_logblocks;   /* number of log blocks */
 124         uint16_t        sb_versionnum;  /* header version == XFS_SB_VERSION */
 125         uint16_t        sb_sectsize;    /* volume sector size, bytes */
 126         uint16_t        sb_inodesize;   /* inode size, bytes */
 127         uint16_t        sb_inopblock;   /* inodes per block */
 128         char            sb_fname[12];   /* file system name */
 129         uint8_t sb_blocklog;    /* log2 of sb_blocksize */
 130         uint8_t sb_sectlog;     /* log2 of sb_sectsize */
 131         uint8_t sb_inodelog;    /* log2 of sb_inodesize */
 132         uint8_t sb_inopblog;    /* log2 of sb_inopblock */
 133         uint8_t sb_agblklog;    /* log2 of sb_agblocks (rounded up) */
 134         uint8_t sb_rextslog;    /* log2 of sb_rextents */
 135         uint8_t sb_inprogress;  /* mkfs is in progress, don't mount */
 136         uint8_t sb_imax_pct;    /* max % of fs for inode space */
 137                                         /* statistics */
 138         /*
 139          * These fields must remain contiguous.  If you really
 140          * want to change their layout, make sure you fix the
 141          * code in xfs_trans_apply_sb_deltas().
 142          */
 143         uint64_t        sb_icount;      /* allocated inodes */
 144         uint64_t        sb_ifree;       /* free inodes */
 145         uint64_t        sb_fdblocks;    /* free data blocks */
 146         uint64_t        sb_frextents;   /* free realtime extents */
 147         /*
 148          * End contiguous fields.
 149          */
 150         xfs_ino_t       sb_uquotino;    /* user quota inode */
 151         xfs_ino_t       sb_gquotino;    /* group quota inode */
 152         uint16_t        sb_qflags;      /* quota flags */
 153         uint8_t sb_flags;       /* misc. flags */
 154         uint8_t sb_shared_vn;   /* shared version number */
 155         xfs_extlen_t    sb_inoalignmt;  /* inode chunk alignment, fsblocks */
 156         uint32_t        sb_unit;        /* stripe or raid unit */
 157         uint32_t        sb_width;       /* stripe or raid width */
 158         uint8_t sb_dirblklog;   /* log2 of dir block size (fsbs) */
 159         uint8_t sb_logsectlog;  /* log2 of the log sector size */
 160         uint16_t        sb_logsectsize; /* sector size for the log, bytes */
 161         uint32_t        sb_logsunit;    /* stripe unit size for the log */
 162         uint32_t        sb_features2;   /* additional feature bits */
 163
 164         /*
 165          * bad features2 field as a result of failing to pad the sb
 166          * structure to 64 bits. Some machines will be using this field
 167          * for features2 bits. Easiest just to mark it bad and not use
 168          * it for anything else.
 169          */
 170         uint32_t        sb_bad_features2;
 171
 172         /* must be padded to 64 bit alignment */
 173 } xfs_sb_t;
 174
 175 /*
 176  * Sequence number values for the fields.
 177  */
 178 typedef enum {
 179         XFS_SBS_MAGICNUM, XFS_SBS_BLOCKSIZE, XFS_SBS_DBLOCKS, XFS_SBS_RBLOCKS,
 180         XFS_SBS_REXTENTS, XFS_SBS_UUID, XFS_SBS_LOGSTART, XFS_SBS_ROOTINO,
 181         XFS_SBS_RBMINO, XFS_SBS_RSUMINO, XFS_SBS_REXTSIZE, XFS_SBS_AGBLOCKS,
 182         XFS_SBS_AGCOUNT, XFS_SBS_RBMBLOCKS, XFS_SBS_LOGBLOCKS,
 183         XFS_SBS_VERSIONNUM, XFS_SBS_SECTSIZE, XFS_SBS_INODESIZE,
 184         XFS_SBS_INOPBLOCK, XFS_SBS_FNAME, XFS_SBS_BLOCKLOG,
 185         XFS_SBS_SECTLOG, XFS_SBS_INODELOG, XFS_SBS_INOPBLOG, XFS_SBS_AGBLKLOG,
 186         XFS_SBS_REXTSLOG, XFS_SBS_INPROGRESS, XFS_SBS_IMAX_PCT, XFS_SBS_ICOUNT,
 187         XFS_SBS_IFREE, XFS_SBS_FDBLOCKS, XFS_SBS_FREXTENTS, XFS_SBS_UQUOTINO,
 188         XFS_SBS_GQUOTINO, XFS_SBS_QFLAGS, XFS_SBS_FLAGS, XFS_SBS_SHARED_VN,
 189         XFS_SBS_INOALIGNMT, XFS_SBS_UNIT, XFS_SBS_WIDTH, XFS_SBS_DIRBLKLOG,
 190         XFS_SBS_LOGSECTLOG, XFS_SBS_LOGSECTSIZE, XFS_SBS_LOGSUNIT,
 191         XFS_SBS_FEATURES2, XFS_SBS_BAD_FEATURES2,
 192         XFS_SBS_FIELDCOUNT
 193 } xfs_sb_field_t;
 194
 195 /*
 196  * Mask values, defined based on the xfs_sb_field_t values.
 197  * Only define the ones we're using.
 198  */
 199 #define XFS_SB_MVAL(x)          (1LL << XFS_SBS_ ## x)
 200 #define XFS_SB_UUID             XFS_SB_MVAL(UUID)
 201 #define XFS_SB_FNAME            XFS_SB_MVAL(FNAME)
 202 #define XFS_SB_ROOTINO          XFS_SB_MVAL(ROOTINO)
 203 #define XFS_SB_RBMINO           XFS_SB_MVAL(RBMINO)
 204 #define XFS_SB_RSUMINO          XFS_SB_MVAL(RSUMINO)
 205 #define XFS_SB_VERSIONNUM       XFS_SB_MVAL(VERSIONNUM)
 206 #define XFS_SB_UQUOTINO         XFS_SB_MVAL(UQUOTINO)
 207 #define XFS_SB_GQUOTINO         XFS_SB_MVAL(GQUOTINO)
 208 #define XFS_SB_QFLAGS           XFS_SB_MVAL(QFLAGS)
 209 #define XFS_SB_SHARED_VN        XFS_SB_MVAL(SHARED_VN)
 210 #define XFS_SB_UNIT             XFS_SB_MVAL(UNIT)
 211 #define XFS_SB_WIDTH            XFS_SB_MVAL(WIDTH)
 212 #define XFS_SB_ICOUNT           XFS_SB_MVAL(ICOUNT)
 213 #define XFS_SB_IFREE            XFS_SB_MVAL(IFREE)
 214 #define XFS_SB_FDBLOCKS         XFS_SB_MVAL(FDBLOCKS)
 215 #define XFS_SB_FEATURES2        XFS_SB_MVAL(FEATURES2)
 216 #define XFS_SB_BAD_FEATURES2    XFS_SB_MVAL(BAD_FEATURES2)
 217 #define XFS_SB_NUM_BITS         ((int)XFS_SBS_FIELDCOUNT)
 218 #define XFS_SB_ALL_BITS         ((1LL << XFS_SB_NUM_BITS) - 1)
 219 #define XFS_SB_MOD_BITS         \
 220         (XFS_SB_UUID | XFS_SB_ROOTINO | XFS_SB_RBMINO | XFS_SB_RSUMINO | \
 221          XFS_SB_VERSIONNUM | XFS_SB_UQUOTINO | XFS_SB_GQUOTINO | \
 222          XFS_SB_QFLAGS | XFS_SB_SHARED_VN | XFS_SB_UNIT | XFS_SB_WIDTH | \
 223          XFS_SB_ICOUNT | XFS_SB_IFREE | XFS_SB_FDBLOCKS | XFS_SB_FEATURES2 | \
 224          XFS_SB_BAD_FEATURES2)
 225
 226
 227 /*
 228  * Misc. Flags - warning - these will be cleared by xfs_repair unless
 229  * a feature bit is set when the flag is used.
 230  */
 231 #define XFS_SBF_NOFLAGS         0x00    /* no flags set */
 232 #define XFS_SBF_READONLY        0x01    /* only read-only mounts allowed */
 233
 234 /*
 235  * define max. shared version we can interoperate with
 236  */
 237 #define XFS_SB_MAX_SHARED_VN    0
 238
 239 #define XFS_SB_VERSION_NUM(sbp) ((sbp)->sb_versionnum & XFS_SB_VERSION_NUMBITS)
 240
 241 static inline int xfs_sb_good_version(xfs_sb_t *sbp)
 242 {
 243         /* We always support version 1-3 */
 244         if (sbp->sb_versionnum >= XFS_SB_VERSION_1 &&
 245             sbp->sb_versionnum <= XFS_SB_VERSION_3)
 246                 return 1;
 247
 248         /* We support version 4 if all feature bits are supported */
 249         if (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) {
 250                 if ((sbp->sb_versionnum & ~XFS_SB_VERSION_OKREALBITS) ||
 251                     ((sbp->sb_versionnum & XFS_SB_VERSION_MOREBITSBIT) &&
 252                      (sbp->sb_features2 & ~XFS_SB_VERSION2_OKREALBITS)))
 253                         return 0;
 254
 255                 if ((sbp->sb_versionnum & XFS_SB_VERSION_SHAREDBIT) &&
 256                     sbp->sb_shared_vn > XFS_SB_MAX_SHARED_VN)
 257                         return 0;
 258
 259                 return 1;
 260         }
 261
 262         return 0;
 263 }
 264
 265 /*
 266  * Detect a mismatched features2 field.  Older kernels read/wrote
 267  * this into the wrong slot, so to be safe we keep them in sync.
 268  */
 269 static inline int xfs_sb_has_mismatched_features2(xfs_sb_t *sbp)
 270 {
 271         return (sbp->sb_bad_features2 != sbp->sb_features2);
 272 }
 273
 274 static inline unsigned xfs_sb_version_tonew(unsigned v)
 275 {
 276         if (v == XFS_SB_VERSION_1)
 277                 return XFS_SB_VERSION_4;
 278
 279         if (v == XFS_SB_VERSION_2)
 280                 return XFS_SB_VERSION_4 | XFS_SB_VERSION_ATTRBIT;
 281
 282         return XFS_SB_VERSION_4 | XFS_SB_VERSION_ATTRBIT |
 283                 XFS_SB_VERSION_NLINKBIT;
 284 }
 285
 286 static inline unsigned xfs_sb_version_toold(unsigned v)
 287 {
 288         if (v & (XFS_SB_VERSION_QUOTABIT | XFS_SB_VERSION_ALIGNBIT))
 289                 return 0;
 290         if (v & XFS_SB_VERSION_NLINKBIT)
 291                 return XFS_SB_VERSION_3;
 292         if (v & XFS_SB_VERSION_ATTRBIT)
 293                 return XFS_SB_VERSION_2;
 294         return XFS_SB_VERSION_1;
 295 }
 296
 297 static inline int xfs_sb_version_hasattr(xfs_sb_t *sbp)
 298 {
 299         return sbp->sb_versionnum == XFS_SB_VERSION_2 ||
 300                 sbp->sb_versionnum == XFS_SB_VERSION_3 ||
 301                 (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4 &&
 302                  (sbp->sb_versionnum & XFS_SB_VERSION_ATTRBIT));
 303 }
 304
 305 static inline void xfs_sb_version_addattr(xfs_sb_t *sbp)
 306 {
 307         if (sbp->sb_versionnum == XFS_SB_VERSION_1)
 308                 sbp->sb_versionnum = XFS_SB_VERSION_2;
 309         else if (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4)
 310                 sbp->sb_versionnum |= XFS_SB_VERSION_ATTRBIT;
 311         else
 312                 sbp->sb_versionnum = XFS_SB_VERSION_4 | XFS_SB_VERSION_ATTRBIT;
 313 }
 314
 315 static inline int xfs_sb_version_hasnlink(xfs_sb_t *sbp)
 316 {
 317         return sbp->sb_versionnum == XFS_SB_VERSION_3 ||
 318                  (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4 &&
 319                   (sbp->sb_versionnum & XFS_SB_VERSION_NLINKBIT));
 320 }
 321
 322 static inline void xfs_sb_version_addnlink(xfs_sb_t *sbp)
 323 {
 324         if (sbp->sb_versionnum <= XFS_SB_VERSION_2)
 325                 sbp->sb_versionnum = XFS_SB_VERSION_3;
 326         else
 327                 sbp->sb_versionnum |= XFS_SB_VERSION_NLINKBIT;
 328 }
 329
 330 static inline int xfs_sb_version_hasquota(xfs_sb_t *sbp)
 331 {
 332         return XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4 &&
 333                 (sbp->sb_versionnum & XFS_SB_VERSION_QUOTABIT);
 334 }
 335
 336 static inline void xfs_sb_version_addquota(xfs_sb_t *sbp)
 337 {
 338         if (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4)
 339                 sbp->sb_versionnum |= XFS_SB_VERSION_QUOTABIT;
 340         else
 341                 sbp->sb_versionnum = xfs_sb_version_tonew(sbp->sb_versionnum) |
 342                                         XFS_SB_VERSION_QUOTABIT;
 343 }
 344
 345 static inline int xfs_sb_version_hasalign(xfs_sb_t *sbp)
 346 {
 347         return XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4 &&
 348                 (sbp->sb_versionnum & XFS_SB_VERSION_ALIGNBIT);
 349 }
 350
 351 static inline int xfs_sb_version_hasdalign(xfs_sb_t *sbp)
 352 {
 353         return XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4 &&
 354                 (sbp->sb_versionnum & XFS_SB_VERSION_DALIGNBIT);
 355 }
 356
 357 static inline int xfs_sb_version_hasshared(xfs_sb_t *sbp)
 358 {
 359         return XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4 &&
 360                 (sbp->sb_versionnum & XFS_SB_VERSION_SHAREDBIT);
 361 }
 362
 363 static inline int xfs_sb_version_hasdirv2(xfs_sb_t *sbp)
 364 {
 365         return XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4 &&
 366                 (sbp->sb_versionnum & XFS_SB_VERSION_DIRV2BIT);
 367 }
 368
 369 static inline int xfs_sb_version_haslogv2(xfs_sb_t *sbp)
 370 {
 371         return XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4 &&
 372                 (sbp->sb_versionnum & XFS_SB_VERSION_LOGV2BIT);
 373 }
 374
 375 static inline int xfs_sb_version_hasextflgbit(xfs_sb_t *sbp)
 376 {
 377         return XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4 &&
 378                 (sbp->sb_versionnum & XFS_SB_VERSION_EXTFLGBIT);
 379 }
 380
 381 static inline int xfs_sb_version_hassector(xfs_sb_t *sbp)
 382 {
 383         return XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4 &&
 384                 (sbp->sb_versionnum & XFS_SB_VERSION_SECTORBIT);
 385 }
 386
 387 static inline int xfs_sb_version_hasasciici(xfs_sb_t *sbp)
 388 {
 389         return XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4 &&
 390                 (sbp->sb_versionnum & XFS_SB_VERSION_BORGBIT);
 391 }
 392
 393 static inline int xfs_sb_version_hasmorebits(xfs_sb_t *sbp)
 394 {
 395         return XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4 &&
 396                 (sbp->sb_versionnum & XFS_SB_VERSION_MOREBITSBIT);
 397 }
 398
 399 /*
 400  * sb_features2 bit version macros.
 401  *
 402  * For example, for a bit defined as XFS_SB_VERSION2_FUNBIT, has a macro:
 403  *
 404  * SB_VERSION_HASFUNBIT(xfs_sb_t *sbp)
 405  *      ((xfs_sb_version_hasmorebits(sbp) &&
 406  *       ((sbp)->sb_features2 & XFS_SB_VERSION2_FUNBIT)
 407  */
 408
 409 static inline int xfs_sb_version_haslazysbcount(xfs_sb_t *sbp)
 410 {
 411         return xfs_sb_version_hasmorebits(sbp) &&
 412                 (sbp->sb_features2 & XFS_SB_VERSION2_LAZYSBCOUNTBIT);
 413 }
 414
 415 static inline int xfs_sb_version_hasattr2(xfs_sb_t *sbp)
 416 {
 417         return xfs_sb_version_hasmorebits(sbp) &&
 418                 (sbp->sb_features2 & XFS_SB_VERSION2_ATTR2BIT);
 419 }
 420
 421 static inline void xfs_sb_version_addattr2(xfs_sb_t *sbp)
 422 {
 423         sbp->sb_versionnum |= XFS_SB_VERSION_MOREBITSBIT;
 424         sbp->sb_features2 |= XFS_SB_VERSION2_ATTR2BIT;
 425 }
 426
 427 static inline void xfs_sb_version_removeattr2(xfs_sb_t *sbp)
 428 {
 429         sbp->sb_features2 &= ~XFS_SB_VERSION2_ATTR2BIT;
 430         if (!sbp->sb_features2)
 431                 sbp->sb_versionnum &= ~XFS_SB_VERSION_MOREBITSBIT;
 432 }
 433
 434 static inline int xfs_sb_version_hasprojid32bit(xfs_sb_t *sbp)
 435 {
 436         return xfs_sb_version_hasmorebits(sbp) &&
 437                 (sbp->sb_features2 & XFS_SB_VERSION2_PROJID32BIT);
 438 }
 439
 440 /*
 441  * end of superblock version macros
 442  */
 443
 444 #define XFS_SB_DADDR            ((xfs_daddr_t)0) /* daddr in filesystem/ag */
 445 #define XFS_SB_BLOCK(mp)        XFS_HDR_BLOCK(mp, XFS_SB_DADDR)
 446 #define XFS_BUF_TO_SBP(bp)      ((xfs_dsb_t *)((bp)->b_addr))
 447
 448 #define XFS_HDR_BLOCK(mp,d)     ((xfs_agblock_t)XFS_BB_TO_FSBT(mp,d))
 449 #define XFS_DADDR_TO_FSB(mp,d)  XFS_AGB_TO_FSB(mp, \
 450                         xfs_daddr_to_agno(mp,d), xfs_daddr_to_agbno(mp,d))
 451 #define XFS_FSB_TO_DADDR(mp,fsbno)      XFS_AGB_TO_DADDR(mp, \
 452                         XFS_FSB_TO_AGNO(mp,fsbno), XFS_FSB_TO_AGBNO(mp,fsbno))
 453
 454 /*
 455  * File system sector to basic block conversions.
 456  */
 457 #define XFS_FSS_TO_BB(mp,sec)   ((sec) << (mp)->m_sectbb_log)
 458
 459 /*
 460  * File system block to basic block conversions.
 461  */
 462 #define XFS_FSB_TO_BB(mp,fsbno) ((fsbno) << (mp)->m_blkbb_log)
 463 #define XFS_BB_TO_FSB(mp,bb)    \
 464         (((bb) + (XFS_FSB_TO_BB(mp,1) - 1)) >> (mp)->m_blkbb_log)
 465 #define XFS_BB_TO_FSBT(mp,bb)   ((bb) >> (mp)->m_blkbb_log)
 466
 467 /*
 468  * File system block to byte conversions.
 469  */
 470 #define XFS_FSB_TO_B(mp,fsbno)  ((xfs_fsize_t)(fsbno) << (mp)->m_sb.sb_blocklog)
 471 #define XFS_B_TO_FSB(mp,b)      \
 472         ((((uint64_t)(b)) + (mp)->m_blockmask) >> (mp)->m_sb.sb_blocklog)
 473 #define XFS_B_TO_FSBT(mp,b)     (((uint64_t)(b)) >> (mp)->m_sb.sb_blocklog)
 474 #define XFS_B_FSB_OFFSET(mp,b)  ((b) & (mp)->m_blockmask)
 475
 476 #endif  /* XFS_SB_H_ */