fs/xfs/xfs_sb.h

   1 /*
   2  * Copyright (c) 2000-2001 Silicon Graphics, Inc.  All Rights Reserved.
   3  *
   4  * This program is free software; you can redistribute it and/or modify it
   5  * under the terms of version 2 of the GNU General Public License as
   6  * published by the Free Software Foundation.
   7  *
   8  * This program is distributed in the hope that it would be useful, but
   9  * WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  11  *
  12  * Further, this software is distributed without any warranty that it is
  13  * free of the rightful claim of any third person regarding infringement
  14  * or the like.  Any license provided herein, whether implied or
  15  * otherwise, applies only to this software file.  Patent licenses, if
  16  * any, provided herein do not apply to combinations of this program with
  17  * other software, or any other product whatsoever.
  18  *
  19  * You should have received a copy of the GNU General Public License along
  20  * with this program; if not, write the Free Software Foundation, Inc., 59
  21  * Temple Place - Suite 330, Boston MA 02111-1307, USA.
  22  *
  23  * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
  24  * Mountain View, CA  94043, or:
  25  *
  26  * http://www.sgi.com
  27  *
  28  * For further information regarding this notice, see:
  29  *
  30  * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
  31  */
  32 #ifndef __XFS_SB_H__
  33 #define __XFS_SB_H__
  34
  35 /*
  36  * Super block
  37  * Fits into a sector-sized buffer at address 0 of each allocation group.
  38  * Only the first of these is ever updated except during growfs.
  39  */
  40
  41 struct xfs_buf;
  42 struct xfs_mount;
  43
  44 #define XFS_SB_MAGIC            0x58465342      /* 'XFSB' */
  45 #define XFS_SB_VERSION_1        1               /* 5.3, 6.0.1, 6.1 */
  46 #define XFS_SB_VERSION_2        2               /* 6.2 - attributes */
  47 #define XFS_SB_VERSION_3        3               /* 6.2 - new inode version */
  48 #define XFS_SB_VERSION_4        4               /* 6.2+ - bitmask version */
  49 #define XFS_SB_VERSION_NUMBITS          0x000f
  50 #define XFS_SB_VERSION_ALLFBITS         0xfff0
  51 #define XFS_SB_VERSION_SASHFBITS        0xf000
  52 #define XFS_SB_VERSION_REALFBITS        0x0ff0
  53 #define XFS_SB_VERSION_ATTRBIT          0x0010
  54 #define XFS_SB_VERSION_NLINKBIT         0x0020
  55 #define XFS_SB_VERSION_QUOTABIT         0x0040
  56 #define XFS_SB_VERSION_ALIGNBIT         0x0080
  57 #define XFS_SB_VERSION_DALIGNBIT        0x0100
  58 #define XFS_SB_VERSION_SHAREDBIT        0x0200
  59 #define XFS_SB_VERSION_LOGV2BIT         0x0400
  60 #define XFS_SB_VERSION_SECTORBIT        0x0800
  61 #define XFS_SB_VERSION_EXTFLGBIT        0x1000
  62 #define XFS_SB_VERSION_DIRV2BIT         0x2000
  63 #define XFS_SB_VERSION_MOREBITSBIT      0x8000
  64 #define XFS_SB_VERSION_OKSASHFBITS      \
  65         (XFS_SB_VERSION_EXTFLGBIT | \
  66          XFS_SB_VERSION_DIRV2BIT)
  67 #define XFS_SB_VERSION_OKREALFBITS      \
  68         (XFS_SB_VERSION_ATTRBIT | \
  69          XFS_SB_VERSION_NLINKBIT | \
  70          XFS_SB_VERSION_QUOTABIT | \
  71          XFS_SB_VERSION_ALIGNBIT | \
  72          XFS_SB_VERSION_DALIGNBIT | \
  73          XFS_SB_VERSION_SHAREDBIT | \
  74          XFS_SB_VERSION_LOGV2BIT | \
  75          XFS_SB_VERSION_SECTORBIT)
  76 #define XFS_SB_VERSION_OKSASHBITS       \
  77         (XFS_SB_VERSION_NUMBITS | \
  78          XFS_SB_VERSION_REALFBITS | \
  79          XFS_SB_VERSION_OKSASHFBITS)
  80 #define XFS_SB_VERSION_OKREALBITS       \
  81         (XFS_SB_VERSION_NUMBITS | \
  82          XFS_SB_VERSION_OKREALFBITS | \
  83          XFS_SB_VERSION_OKSASHFBITS)
  84 #define XFS_SB_VERSION_MKFS(ia,dia,extflag,dirv2,na,sflag,morebits)     \
  85         (((ia) || (dia) || (extflag) || (dirv2) || (na) || (sflag) || \
  86           (morebits)) ? \
  87                 (XFS_SB_VERSION_4 | \
  88                  ((ia) ? XFS_SB_VERSION_ALIGNBIT : 0) | \
  89                  ((dia) ? XFS_SB_VERSION_DALIGNBIT : 0) | \
  90                  ((extflag) ? XFS_SB_VERSION_EXTFLGBIT : 0) | \
  91                  ((dirv2) ? XFS_SB_VERSION_DIRV2BIT : 0) | \
  92                  ((na) ? XFS_SB_VERSION_LOGV2BIT : 0) | \
  93                  ((sflag) ? XFS_SB_VERSION_SECTORBIT : 0) | \
  94                  ((morebits) ? XFS_SB_VERSION_MOREBITSBIT : 0)) : \
  95                 XFS_SB_VERSION_1)
  96
  97 /*
  98  * There are two words to hold XFS "feature" bits: the original
  99  * word, sb_versionnum, and sb_features2.  Whenever a bit is set in
 100  * sb_features2, the feature bit XFS_SB_VERSION_MOREBITSBIT must be set.
 101  *
 102  * These defines represent bits in sb_features2.
 103  */
 104 #define XFS_SB_VERSION2_REALFBITS       0x00ffffff      /* Mask: features */
 105 #define XFS_SB_VERSION2_RESERVED1BIT    0x00000001
 106 #define XFS_SB_VERSION2_SASHFBITS       0xff000000      /* Mask: features that
 107                                                            require changing
 108                                                            PROM and SASH */
 109
 110 #define XFS_SB_VERSION2_OKREALFBITS     \
 111         (0)
 112 #define XFS_SB_VERSION2_OKSASHFBITS     \
 113         (0)
 114 #define XFS_SB_VERSION2_OKREALBITS      \
 115         (XFS_SB_VERSION2_OKREALFBITS |  \
 116          XFS_SB_VERSION2_OKSASHFBITS )
 117
 118 /*
 119  * mkfs macro to set up sb_features2 word
 120  */
 121 #define XFS_SB_VERSION2_MKFS(xyz)       \
 122         ((xyz) ? 0 : 0)
 123
 124 typedef struct xfs_sb
 125 {
 126         __uint32_t      sb_magicnum;    /* magic number == XFS_SB_MAGIC */
 127         __uint32_t      sb_blocksize;   /* logical block size, bytes */
 128         xfs_drfsbno_t   sb_dblocks;     /* number of data blocks */
 129         xfs_drfsbno_t   sb_rblocks;     /* number of realtime blocks */
 130         xfs_drtbno_t    sb_rextents;    /* number of realtime extents */
 131         uuid_t          sb_uuid;        /* file system unique id */
 132         xfs_dfsbno_t    sb_logstart;    /* starting block of log if internal */
 133         xfs_ino_t       sb_rootino;     /* root inode number */
 134         xfs_ino_t       sb_rbmino;      /* bitmap inode for realtime extents */
 135         xfs_ino_t       sb_rsumino;     /* summary inode for rt bitmap */
 136         xfs_agblock_t   sb_rextsize;    /* realtime extent size, blocks */
 137         xfs_agblock_t   sb_agblocks;    /* size of an allocation group */
 138         xfs_agnumber_t  sb_agcount;     /* number of allocation groups */
 139         xfs_extlen_t    sb_rbmblocks;   /* number of rt bitmap blocks */
 140         xfs_extlen_t    sb_logblocks;   /* number of log blocks */
 141         __uint16_t      sb_versionnum;  /* header version == XFS_SB_VERSION */
 142         __uint16_t      sb_sectsize;    /* volume sector size, bytes */
 143         __uint16_t      sb_inodesize;   /* inode size, bytes */
 144         __uint16_t      sb_inopblock;   /* inodes per block */
 145         char            sb_fname[12];   /* file system name */
 146         __uint8_t       sb_blocklog;    /* log2 of sb_blocksize */
 147         __uint8_t       sb_sectlog;     /* log2 of sb_sectsize */
 148         __uint8_t       sb_inodelog;    /* log2 of sb_inodesize */
 149         __uint8_t       sb_inopblog;    /* log2 of sb_inopblock */
 150         __uint8_t       sb_agblklog;    /* log2 of sb_agblocks (rounded up) */
 151         __uint8_t       sb_rextslog;    /* log2 of sb_rextents */
 152         __uint8_t       sb_inprogress;  /* mkfs is in progress, don't mount */
 153         __uint8_t       sb_imax_pct;    /* max % of fs for inode space */
 154                                         /* statistics */
 155         /*
 156          * These fields must remain contiguous.  If you really
 157          * want to change their layout, make sure you fix the
 158          * code in xfs_trans_apply_sb_deltas().
 159          */
 160         __uint64_t      sb_icount;      /* allocated inodes */
 161         __uint64_t      sb_ifree;       /* free inodes */
 162         __uint64_t      sb_fdblocks;    /* free data blocks */
 163         __uint64_t      sb_frextents;   /* free realtime extents */
 164         /*
 165          * End contiguous fields.
 166          */
 167         xfs_ino_t       sb_uquotino;    /* user quota inode */
 168         xfs_ino_t       sb_gquotino;    /* group quota inode */
 169         __uint16_t      sb_qflags;      /* quota flags */
 170         __uint8_t       sb_flags;       /* misc. flags */
 171         __uint8_t       sb_shared_vn;   /* shared version number */
 172         xfs_extlen_t    sb_inoalignmt;  /* inode chunk alignment, fsblocks */
 173         __uint32_t      sb_unit;        /* stripe or raid unit */
 174         __uint32_t      sb_width;       /* stripe or raid width */
 175         __uint8_t       sb_dirblklog;   /* log2 of dir block size (fsbs) */
 176         __uint8_t       sb_logsectlog;  /* log2 of the log sector size */
 177         __uint16_t      sb_logsectsize; /* sector size for the log, bytes */
 178         __uint32_t      sb_logsunit;    /* stripe unit size for the log */
 179         __uint32_t      sb_features2;   /* additonal feature bits */
 180 } xfs_sb_t;
 181
 182 /*
 183  * Sequence number values for the fields.
 184  */
 185 typedef enum {
 186         XFS_SBS_MAGICNUM, XFS_SBS_BLOCKSIZE, XFS_SBS_DBLOCKS, XFS_SBS_RBLOCKS,
 187         XFS_SBS_REXTENTS, XFS_SBS_UUID, XFS_SBS_LOGSTART, XFS_SBS_ROOTINO,
 188         XFS_SBS_RBMINO, XFS_SBS_RSUMINO, XFS_SBS_REXTSIZE, XFS_SBS_AGBLOCKS,
 189         XFS_SBS_AGCOUNT, XFS_SBS_RBMBLOCKS, XFS_SBS_LOGBLOCKS,
 190         XFS_SBS_VERSIONNUM, XFS_SBS_SECTSIZE, XFS_SBS_INODESIZE,
 191         XFS_SBS_INOPBLOCK, XFS_SBS_FNAME, XFS_SBS_BLOCKLOG,
 192         XFS_SBS_SECTLOG, XFS_SBS_INODELOG, XFS_SBS_INOPBLOG, XFS_SBS_AGBLKLOG,
 193         XFS_SBS_REXTSLOG, XFS_SBS_INPROGRESS, XFS_SBS_IMAX_PCT, XFS_SBS_ICOUNT,
 194         XFS_SBS_IFREE, XFS_SBS_FDBLOCKS, XFS_SBS_FREXTENTS, XFS_SBS_UQUOTINO,
 195         XFS_SBS_GQUOTINO, XFS_SBS_QFLAGS, XFS_SBS_FLAGS, XFS_SBS_SHARED_VN,
 196         XFS_SBS_INOALIGNMT, XFS_SBS_UNIT, XFS_SBS_WIDTH, XFS_SBS_DIRBLKLOG,
 197         XFS_SBS_LOGSECTLOG, XFS_SBS_LOGSECTSIZE, XFS_SBS_LOGSUNIT,
 198         XFS_SBS_FEATURES2,
 199         XFS_SBS_FIELDCOUNT
 200 } xfs_sb_field_t;
 201
 202 /*
 203  * Mask values, defined based on the xfs_sb_field_t values.
 204  * Only define the ones we're using.
 205  */
 206 #define XFS_SB_MVAL(x)          (1LL << XFS_SBS_ ## x)
 207 #define XFS_SB_UUID             XFS_SB_MVAL(UUID)
 208 #define XFS_SB_FNAME            XFS_SB_MVAL(FNAME)
 209 #define XFS_SB_ROOTINO          XFS_SB_MVAL(ROOTINO)
 210 #define XFS_SB_RBMINO           XFS_SB_MVAL(RBMINO)
 211 #define XFS_SB_RSUMINO          XFS_SB_MVAL(RSUMINO)
 212 #define XFS_SB_VERSIONNUM       XFS_SB_MVAL(VERSIONNUM)
 213 #define XFS_SB_UQUOTINO         XFS_SB_MVAL(UQUOTINO)
 214 #define XFS_SB_GQUOTINO         XFS_SB_MVAL(GQUOTINO)
 215 #define XFS_SB_QFLAGS           XFS_SB_MVAL(QFLAGS)
 216 #define XFS_SB_SHARED_VN        XFS_SB_MVAL(SHARED_VN)
 217 #define XFS_SB_UNIT             XFS_SB_MVAL(UNIT)
 218 #define XFS_SB_WIDTH            XFS_SB_MVAL(WIDTH)
 219 #define XFS_SB_NUM_BITS         ((int)XFS_SBS_FIELDCOUNT)
 220 #define XFS_SB_ALL_BITS         ((1LL << XFS_SB_NUM_BITS) - 1)
 221 #define XFS_SB_MOD_BITS         \
 222         (XFS_SB_UUID | XFS_SB_ROOTINO | XFS_SB_RBMINO | XFS_SB_RSUMINO | \
 223          XFS_SB_VERSIONNUM | XFS_SB_UQUOTINO | XFS_SB_GQUOTINO | \
 224          XFS_SB_QFLAGS | XFS_SB_SHARED_VN | XFS_SB_UNIT | XFS_SB_WIDTH)
 225
 226 /*
 227  * Misc. Flags - warning - these will be cleared by xfs_repair unless
 228  * a feature bit is set when the flag is used.
 229  */
 230 #define XFS_SBF_NOFLAGS         0x00    /* no flags set */
 231 #define XFS_SBF_READONLY        0x01    /* only read-only mounts allowed */
 232
 233 /*
 234  * define max. shared version we can interoperate with
 235  */
 236 #define XFS_SB_MAX_SHARED_VN    0
 237
 238 #if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_SB_VERSION_NUM)
 239 int xfs_sb_version_num(xfs_sb_t *sbp);
 240 #define XFS_SB_VERSION_NUM(sbp) xfs_sb_version_num(sbp)
 241 #else
 242 #define XFS_SB_VERSION_NUM(sbp) ((sbp)->sb_versionnum & XFS_SB_VERSION_NUMBITS)
 243 #endif
 244
 245 #if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_SB_GOOD_VERSION)
 246 int xfs_sb_good_version(xfs_sb_t *sbp);
 247 #define XFS_SB_GOOD_VERSION(sbp)        xfs_sb_good_version(sbp)
 248 #else
 249 #define XFS_SB_GOOD_VERSION_INT(sbp)    \
 250         ((((sbp)->sb_versionnum >= XFS_SB_VERSION_1) && \
 251           ((sbp)->sb_versionnum <= XFS_SB_VERSION_3)) || \
 252            ((XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \
 253             !(((sbp)->sb_versionnum & ~XFS_SB_VERSION_OKREALBITS) || \
 254               (((sbp)->sb_versionnum & XFS_SB_VERSION_MOREBITSBIT) && \
 255                ((sbp)->sb_features2 & ~XFS_SB_VERSION2_OKREALBITS)))
 256
 257 #ifdef __KERNEL__
 258 #define XFS_SB_GOOD_VERSION(sbp)        \
 259         (XFS_SB_GOOD_VERSION_INT(sbp) && \
 260           (sbp)->sb_shared_vn <= XFS_SB_MAX_SHARED_VN) ))
 261 #else
 262 /*
 263  * extra 2 paren's here (( to unconfuse paren-matching editors
 264  * like vi because XFS_SB_GOOD_VERSION_INT is a partial expression
 265  * and the two XFS_SB_GOOD_VERSION's each 2 more close paren's to
 266  * complete the expression.
 267  */
 268 #define XFS_SB_GOOD_VERSION(sbp)        \
 269         (XFS_SB_GOOD_VERSION_INT(sbp) && \
 270           (!((sbp)->sb_versionnum & XFS_SB_VERSION_SHAREDBIT) || \
 271            (sbp)->sb_shared_vn <= XFS_SB_MAX_SHARED_VN)) ))
 272 #endif /* __KERNEL__ */
 273 #endif
 274
 275 #define XFS_SB_GOOD_SASH_VERSION(sbp)   \
 276         ((((sbp)->sb_versionnum >= XFS_SB_VERSION_1) && \
 277           ((sbp)->sb_versionnum <= XFS_SB_VERSION_3)) || \
 278          ((XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \
 279           !((sbp)->sb_versionnum & ~XFS_SB_VERSION_OKSASHBITS)))
 280
 281 #if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_SB_VERSION_TONEW)
 282 unsigned xfs_sb_version_tonew(unsigned v);
 283 #define XFS_SB_VERSION_TONEW(v) xfs_sb_version_tonew(v)
 284 #else
 285 #define XFS_SB_VERSION_TONEW(v) \
 286         ((((v) == XFS_SB_VERSION_1) ? \
 287                 0 : \
 288                 (((v) == XFS_SB_VERSION_2) ? \
 289                         XFS_SB_VERSION_ATTRBIT : \
 290                         (XFS_SB_VERSION_ATTRBIT | XFS_SB_VERSION_NLINKBIT))) | \
 291          XFS_SB_VERSION_4)
 292 #endif
 293
 294 #if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_SB_VERSION_TOOLD)
 295 unsigned xfs_sb_version_toold(unsigned v);
 296 #define XFS_SB_VERSION_TOOLD(v) xfs_sb_version_toold(v)
 297 #else
 298 #define XFS_SB_VERSION_TOOLD(v) \
 299         (((v) & (XFS_SB_VERSION_QUOTABIT | XFS_SB_VERSION_ALIGNBIT)) ? \
 300                 0 : \
 301                 (((v) & XFS_SB_VERSION_NLINKBIT) ? \
 302                         XFS_SB_VERSION_3 : \
 303                         (((v) & XFS_SB_VERSION_ATTRBIT) ?  \
 304                                 XFS_SB_VERSION_2 : \
 305                                 XFS_SB_VERSION_1)))
 306 #endif
 307
 308 #if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_SB_VERSION_HASATTR)
 309 int xfs_sb_version_hasattr(xfs_sb_t *sbp);
 310 #define XFS_SB_VERSION_HASATTR(sbp)     xfs_sb_version_hasattr(sbp)
 311 #else
 312 #define XFS_SB_VERSION_HASATTR(sbp)     \
 313         (((sbp)->sb_versionnum == XFS_SB_VERSION_2) || \
 314          ((sbp)->sb_versionnum == XFS_SB_VERSION_3) || \
 315          ((XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \
 316           ((sbp)->sb_versionnum & XFS_SB_VERSION_ATTRBIT)))
 317 #endif
 318
 319 #if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_SB_VERSION_ADDATTR)
 320 void xfs_sb_version_addattr(xfs_sb_t *sbp);
 321 #define XFS_SB_VERSION_ADDATTR(sbp)     xfs_sb_version_addattr(sbp)
 322 #else
 323 #define XFS_SB_VERSION_ADDATTR(sbp)     \
 324         ((sbp)->sb_versionnum = \
 325          (((sbp)->sb_versionnum == XFS_SB_VERSION_1) ? \
 326                 XFS_SB_VERSION_2 : \
 327                 ((XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) ? \
 328                         ((sbp)->sb_versionnum | XFS_SB_VERSION_ATTRBIT) : \
 329                         (XFS_SB_VERSION_4 | XFS_SB_VERSION_ATTRBIT))))
 330 #endif
 331
 332 #if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_SB_VERSION_HASNLINK)
 333 int xfs_sb_version_hasnlink(xfs_sb_t *sbp);
 334 #define XFS_SB_VERSION_HASNLINK(sbp)    xfs_sb_version_hasnlink(sbp)
 335 #else
 336 #define XFS_SB_VERSION_HASNLINK(sbp)    \
 337         (((sbp)->sb_versionnum == XFS_SB_VERSION_3) || \
 338          ((XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \
 339           ((sbp)->sb_versionnum & XFS_SB_VERSION_NLINKBIT)))
 340 #endif
 341
 342 #if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_SB_VERSION_ADDNLINK)
 343 void xfs_sb_version_addnlink(xfs_sb_t *sbp);
 344 #define XFS_SB_VERSION_ADDNLINK(sbp)    xfs_sb_version_addnlink(sbp)
 345 #else
 346 #define XFS_SB_VERSION_ADDNLINK(sbp)    \
 347         ((sbp)->sb_versionnum = \
 348          ((sbp)->sb_versionnum <= XFS_SB_VERSION_2 ? \
 349                 XFS_SB_VERSION_3 : \
 350                 ((sbp)->sb_versionnum | XFS_SB_VERSION_NLINKBIT)))
 351 #endif
 352
 353 #if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_SB_VERSION_HASQUOTA)
 354 int xfs_sb_version_hasquota(xfs_sb_t *sbp);
 355 #define XFS_SB_VERSION_HASQUOTA(sbp)    xfs_sb_version_hasquota(sbp)
 356 #else
 357 #define XFS_SB_VERSION_HASQUOTA(sbp)    \
 358         ((XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \
 359          ((sbp)->sb_versionnum & XFS_SB_VERSION_QUOTABIT))
 360 #endif
 361
 362 #if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_SB_VERSION_ADDQUOTA)
 363 void xfs_sb_version_addquota(xfs_sb_t *sbp);
 364 #define XFS_SB_VERSION_ADDQUOTA(sbp)    xfs_sb_version_addquota(sbp)
 365 #else
 366 #define XFS_SB_VERSION_ADDQUOTA(sbp)    \
 367         ((sbp)->sb_versionnum = \
 368          (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4 ? \
 369                 ((sbp)->sb_versionnum | XFS_SB_VERSION_QUOTABIT) : \
 370                 (XFS_SB_VERSION_TONEW((sbp)->sb_versionnum) | \
 371                  XFS_SB_VERSION_QUOTABIT)))
 372 #endif
 373
 374 #if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_SB_VERSION_HASALIGN)
 375 int xfs_sb_version_hasalign(xfs_sb_t *sbp);
 376 #define XFS_SB_VERSION_HASALIGN(sbp)    xfs_sb_version_hasalign(sbp)
 377 #else
 378 #define XFS_SB_VERSION_HASALIGN(sbp)    \
 379         ((XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \
 380          ((sbp)->sb_versionnum & XFS_SB_VERSION_ALIGNBIT))
 381 #endif
 382
 383 #if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_SB_VERSION_SUBALIGN)
 384 void xfs_sb_version_subalign(xfs_sb_t *sbp);
 385 #define XFS_SB_VERSION_SUBALIGN(sbp)    xfs_sb_version_subalign(sbp)
 386 #else
 387 #define XFS_SB_VERSION_SUBALIGN(sbp)    \
 388         ((sbp)->sb_versionnum = \
 389          XFS_SB_VERSION_TOOLD((sbp)->sb_versionnum & ~XFS_SB_VERSION_ALIGNBIT))
 390 #endif
 391
 392 #if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_SB_VERSION_HASDALIGN)
 393 int xfs_sb_version_hasdalign(xfs_sb_t *sbp);
 394 #define XFS_SB_VERSION_HASDALIGN(sbp)   xfs_sb_version_hasdalign(sbp)
 395 #else
 396 #define XFS_SB_VERSION_HASDALIGN(sbp)   \
 397         ((XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \
 398          ((sbp)->sb_versionnum & XFS_SB_VERSION_DALIGNBIT))
 399 #endif
 400
 401 #if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_SB_VERSION_ADDDALIGN)
 402 int xfs_sb_version_adddalign(xfs_sb_t *sbp);
 403 #define XFS_SB_VERSION_ADDDALIGN(sbp)   xfs_sb_version_adddalign(sbp)
 404 #else
 405 #define XFS_SB_VERSION_ADDDALIGN(sbp)   \
 406         ((sbp)->sb_versionnum = \
 407                 ((sbp)->sb_versionnum | XFS_SB_VERSION_DALIGNBIT))
 408 #endif
 409
 410 #if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_SB_VERSION_HASSHARED)
 411 int xfs_sb_version_hasshared(xfs_sb_t *sbp);
 412 #define XFS_SB_VERSION_HASSHARED(sbp)   xfs_sb_version_hasshared(sbp)
 413 #else
 414 #define XFS_SB_VERSION_HASSHARED(sbp)   \
 415         ((XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \
 416          ((sbp)->sb_versionnum & XFS_SB_VERSION_SHAREDBIT))
 417 #endif
 418
 419 #if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_SB_VERSION_ADDSHARED)
 420 int xfs_sb_version_addshared(xfs_sb_t *sbp);
 421 #define XFS_SB_VERSION_ADDSHARED(sbp)   xfs_sb_version_addshared(sbp)
 422 #else
 423 #define XFS_SB_VERSION_ADDSHARED(sbp)   \
 424         ((sbp)->sb_versionnum = \
 425                 ((sbp)->sb_versionnum | XFS_SB_VERSION_SHAREDBIT))
 426 #endif
 427
 428 #if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_SB_VERSION_SUBSHARED)
 429 int xfs_sb_version_subshared(xfs_sb_t *sbp);
 430 #define XFS_SB_VERSION_SUBSHARED(sbp)   xfs_sb_version_subshared(sbp)
 431 #else
 432 #define XFS_SB_VERSION_SUBSHARED(sbp)   \
 433         ((sbp)->sb_versionnum = \
 434                 ((sbp)->sb_versionnum & ~XFS_SB_VERSION_SHAREDBIT))
 435 #endif
 436
 437 #if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_SB_VERSION_HASDIRV2)
 438 int xfs_sb_version_hasdirv2(xfs_sb_t *sbp);
 439 #define XFS_SB_VERSION_HASDIRV2(sbp)    xfs_sb_version_hasdirv2(sbp)
 440 #else
 441 #define XFS_SB_VERSION_HASDIRV2(sbp)    \
 442         ((XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \
 443          ((sbp)->sb_versionnum & XFS_SB_VERSION_DIRV2BIT))
 444 #endif
 445
 446 #if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_SB_VERSION_HASLOGV2)
 447 int xfs_sb_version_haslogv2(xfs_sb_t *sbp);
 448 #define XFS_SB_VERSION_HASLOGV2(sbp)   xfs_sb_version_haslogv2(sbp)
 449 #else
 450 #define XFS_SB_VERSION_HASLOGV2(sbp)   \
 451         ((XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \
 452         ((sbp)->sb_versionnum & XFS_SB_VERSION_LOGV2BIT))
 453 #endif
 454
 455 #if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_SB_VERSION_HASEXTFLGBIT)
 456 int xfs_sb_version_hasextflgbit(xfs_sb_t *sbp);
 457 #define XFS_SB_VERSION_HASEXTFLGBIT(sbp)        xfs_sb_version_hasextflgbit(sbp)
 458 #else
 459 #define XFS_SB_VERSION_HASEXTFLGBIT(sbp)        \
 460         ((XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \
 461          ((sbp)->sb_versionnum & XFS_SB_VERSION_EXTFLGBIT))
 462 #endif
 463
 464 #if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_SB_VERSION_ADDEXTFLGBIT)
 465 int xfs_sb_version_addextflgbit(xfs_sb_t *sbp);
 466 #define XFS_SB_VERSION_ADDEXTFLGBIT(sbp)        xfs_sb_version_addextflgbit(sbp)
 467 #else
 468 #define XFS_SB_VERSION_ADDEXTFLGBIT(sbp)        \
 469         ((sbp)->sb_versionnum = \
 470                 ((sbp)->sb_versionnum | XFS_SB_VERSION_EXTFLGBIT))
 471 #endif
 472
 473 #if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_SB_VERSION_SUBEXTFLGBIT)
 474 int xfs_sb_version_subextflgbit(xfs_sb_t *sbp);
 475 #define XFS_SB_VERSION_SUBEXTFLGBIT(sbp)        xfs_sb_version_subextflgbit(sbp)
 476 #else
 477 #define XFS_SB_VERSION_SUBEXTFLGBIT(sbp)        \
 478         ((sbp)->sb_versionnum = \
 479                 ((sbp)->sb_versionnum & ~XFS_SB_VERSION_EXTFLGBIT))
 480 #endif
 481
 482 #if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_SB_VERSION_HASSECTOR)
 483 int xfs_sb_version_hassector(xfs_sb_t *sbp);
 484 #define XFS_SB_VERSION_HASSECTOR(sbp)   xfs_sb_version_hassector(sbp)
 485 #else
 486 #define XFS_SB_VERSION_HASSECTOR(sbp)   \
 487         ((XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \
 488         ((sbp)->sb_versionnum & XFS_SB_VERSION_SECTORBIT))
 489 #endif
 490
 491 #if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_SB_VERSION_HASMOREBITSBIT)
 492 int xfs_sb_version_hasmorebits(xfs_sb_t *sbp);
 493 #define XFS_SB_VERSION_HASMOREBITS(sbp) xfs_sb_version_hasmorebits(sbp)
 494 #else
 495 #define XFS_SB_VERSION_HASMOREBITS(sbp) \
 496         ((XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \
 497          ((sbp)->sb_versionnum & XFS_SB_VERSION_MOREBITSBIT))
 498 #endif
 499
 500 /*
 501  * sb_features2 bit version macros.
 502  *
 503  * For example, for a bit defined as XFS_SB_VERSION2_YBIT, has a macro:
 504  *
 505  * SB_VERSION_HASYBIT(xfs_sb_t *sbp)
 506  *      ((XFS_SB_VERSION_HASMOREBITS(sbp) &&
 507  *       ((sbp)->sb_versionnum & XFS_SB_VERSION2_YBIT)
 508  */
 509
 510 /*
 511  * end of superblock version macros
 512  */
 513
 514 #define XFS_SB_DADDR    ((xfs_daddr_t)0)        /* daddr in filesystem/ag */
 515 #if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_SB_BLOCK)
 516 xfs_agblock_t xfs_sb_block(struct xfs_mount *mp);
 517 #define XFS_SB_BLOCK(mp)        xfs_sb_block(mp)
 518 #else
 519 #define XFS_SB_BLOCK(mp)        XFS_HDR_BLOCK(mp, XFS_SB_DADDR)
 520 #endif
 521
 522 #if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_HDR_BLOCK)
 523 xfs_agblock_t xfs_hdr_block(struct xfs_mount *mp, xfs_daddr_t d);
 524 #define XFS_HDR_BLOCK(mp,d)     xfs_hdr_block(mp,d)
 525 #else
 526 #define XFS_HDR_BLOCK(mp,d)     ((xfs_agblock_t)(XFS_BB_TO_FSBT(mp,d)))
 527 #endif
 528 #if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_DADDR_TO_FSB)
 529 xfs_fsblock_t xfs_daddr_to_fsb(struct xfs_mount *mp, xfs_daddr_t d);
 530 #define XFS_DADDR_TO_FSB(mp,d)          xfs_daddr_to_fsb(mp,d)
 531 #else
 532 #define XFS_DADDR_TO_FSB(mp,d) \
 533         XFS_AGB_TO_FSB(mp, XFS_DADDR_TO_AGNO(mp,d), XFS_DADDR_TO_AGBNO(mp,d))
 534 #endif
 535 #if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_FSB_TO_DADDR)
 536 xfs_daddr_t xfs_fsb_to_daddr(struct xfs_mount *mp, xfs_fsblock_t fsbno);
 537 #define XFS_FSB_TO_DADDR(mp,fsbno)      xfs_fsb_to_daddr(mp,fsbno)
 538 #else
 539 #define XFS_FSB_TO_DADDR(mp,fsbno) \
 540         XFS_AGB_TO_DADDR(mp, XFS_FSB_TO_AGNO(mp,fsbno), \
 541                          XFS_FSB_TO_AGBNO(mp,fsbno))
 542 #endif
 543
 544 #if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_BUF_TO_SBP)
 545 xfs_sb_t *xfs_buf_to_sbp(struct xfs_buf *bp);
 546 #define XFS_BUF_TO_SBP(bp)      xfs_buf_to_sbp(bp)
 547 #else
 548 #define XFS_BUF_TO_SBP(bp)      ((xfs_sb_t *)XFS_BUF_PTR(bp))
 549 #endif
 550
 551 /*
 552  * File system sector to basic block conversions.
 553  */
 554 #define XFS_FSS_TO_BB(mp,sec)   ((sec) << (mp)->m_sectbb_log)
 555 #define XFS_BB_TO_FSS(mp,bb)    \
 556         (((bb) + (XFS_FSS_TO_BB(mp,1) - 1)) >> (mp)->m_sectbb_log)
 557 #define XFS_BB_TO_FSST(mp,bb)   ((bb) >> (mp)->m_sectbb_log)
 558
 559 /*
 560  * File system sector to byte conversions.
 561  */
 562 #define XFS_FSS_TO_B(mp,sectno) ((xfs_fsize_t)(sectno) << (mp)->m_sb.sb_sectlog)
 563 #define XFS_B_TO_FSST(mp,b)     (((__uint64_t)(b)) >> (mp)->m_sb.sb_sectlog)
 564
 565 /*
 566  * File system block to basic block conversions.
 567  */
 568 #define XFS_FSB_TO_BB(mp,fsbno) ((fsbno) << (mp)->m_blkbb_log)
 569 #define XFS_BB_TO_FSB(mp,bb)    \
 570         (((bb) + (XFS_FSB_TO_BB(mp,1) - 1)) >> (mp)->m_blkbb_log)
 571 #define XFS_BB_TO_FSBT(mp,bb)   ((bb) >> (mp)->m_blkbb_log)
 572 #define XFS_BB_FSB_OFFSET(mp,bb) ((bb) & ((mp)->m_bsize - 1))
 573
 574 /*
 575  * File system block to byte conversions.
 576  */
 577 #define XFS_FSB_TO_B(mp,fsbno)  ((xfs_fsize_t)(fsbno) << (mp)->m_sb.sb_blocklog)
 578 #define XFS_B_TO_FSB(mp,b)      \
 579         ((((__uint64_t)(b)) + (mp)->m_blockmask) >> (mp)->m_sb.sb_blocklog)
 580 #define XFS_B_TO_FSBT(mp,b)     (((__uint64_t)(b)) >> (mp)->m_sb.sb_blocklog)
 581 #define XFS_B_FSB_OFFSET(mp,b)  ((b) & (mp)->m_blockmask)
 582
 583 #endif  /* __XFS_SB_H__ */