include/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_OKSASHFBITS      \
  64         (XFS_SB_VERSION_EXTFLGBIT | \
  65          XFS_SB_VERSION_DIRV2BIT)
  66 #define XFS_SB_VERSION_OKREALFBITS      \
  67         (XFS_SB_VERSION_ATTRBIT | \
  68          XFS_SB_VERSION_NLINKBIT | \
  69          XFS_SB_VERSION_QUOTABIT | \
  70          XFS_SB_VERSION_ALIGNBIT | \
  71          XFS_SB_VERSION_DALIGNBIT | \
  72          XFS_SB_VERSION_SHAREDBIT | \
  73          XFS_SB_VERSION_LOGV2BIT | \
  74          XFS_SB_VERSION_SECTORBIT)
  75 #define XFS_SB_VERSION_OKSASHBITS       \
  76         (XFS_SB_VERSION_NUMBITS | \
  77          XFS_SB_VERSION_REALFBITS | \
  78          XFS_SB_VERSION_OKSASHFBITS)
  79 #define XFS_SB_VERSION_OKREALBITS       \
  80         (XFS_SB_VERSION_NUMBITS | \
  81          XFS_SB_VERSION_OKREALFBITS | \
  82          XFS_SB_VERSION_OKSASHFBITS)
  83 #define XFS_SB_VERSION_MKFS(ia,dia,extflag,dirv2,na,sflag)      \
  84         (((ia) || (dia) || (extflag) || (dirv2) || (na)) ? \
  85                 (XFS_SB_VERSION_4 | \
  86                  ((ia) ? XFS_SB_VERSION_ALIGNBIT : 0) | \
  87                  ((dia) ? XFS_SB_VERSION_DALIGNBIT : 0) | \
  88                  ((extflag) ? XFS_SB_VERSION_EXTFLGBIT : 0) | \
  89                  ((dirv2) ? XFS_SB_VERSION_DIRV2BIT : 0) | \
  90                  ((na) ? XFS_SB_VERSION_LOGV2BIT : 0) | \
  91                  ((sflag) ? XFS_SB_VERSION_SECTORBIT : 0)) : \
  92                 XFS_SB_VERSION_1)
  93
  94 typedef struct xfs_sb
  95 {
  96         __uint32_t      sb_magicnum;    /* magic number == XFS_SB_MAGIC */
  97         __uint32_t      sb_blocksize;   /* logical block size, bytes */
  98         xfs_drfsbno_t   sb_dblocks;     /* number of data blocks */
  99         xfs_drfsbno_t   sb_rblocks;     /* number of realtime blocks */
 100         xfs_drtbno_t    sb_rextents;    /* number of realtime extents */
 101         uuid_t          sb_uuid;        /* file system unique id */
 102         xfs_dfsbno_t    sb_logstart;    /* starting block of log if internal */
 103         xfs_ino_t       sb_rootino;     /* root inode number */
 104         xfs_ino_t       sb_rbmino;      /* bitmap inode for realtime extents */
 105         xfs_ino_t       sb_rsumino;     /* summary inode for rt bitmap */
 106         xfs_agblock_t   sb_rextsize;    /* realtime extent size, blocks */
 107         xfs_agblock_t   sb_agblocks;    /* size of an allocation group */
 108         xfs_agnumber_t  sb_agcount;     /* number of allocation groups */
 109         xfs_extlen_t    sb_rbmblocks;   /* number of rt bitmap blocks */
 110         xfs_extlen_t    sb_logblocks;   /* number of log blocks */
 111         __uint16_t      sb_versionnum;  /* header version == XFS_SB_VERSION */
 112         __uint16_t      sb_sectsize;    /* volume sector size, bytes */
 113         __uint16_t      sb_inodesize;   /* inode size, bytes */
 114         __uint16_t      sb_inopblock;   /* inodes per block */
 115         char            sb_fname[12];   /* file system name */
 116         __uint8_t       sb_blocklog;    /* log2 of sb_blocksize */
 117         __uint8_t       sb_sectlog;     /* log2 of sb_sectsize */
 118         __uint8_t       sb_inodelog;    /* log2 of sb_inodesize */
 119         __uint8_t       sb_inopblog;    /* log2 of sb_inopblock */
 120         __uint8_t       sb_agblklog;    /* log2 of sb_agblocks (rounded up) */
 121         __uint8_t       sb_rextslog;    /* log2 of sb_rextents */
 122         __uint8_t       sb_inprogress;  /* mkfs is in progress, don't mount */
 123         __uint8_t       sb_imax_pct;    /* max % of fs for inode space */
 124                                         /* statistics */
 125         /*
 126          * These fields must remain contiguous.  If you really
 127          * want to change their layout, make sure you fix the
 128          * code in xfs_trans_apply_sb_deltas().
 129          */
 130         __uint64_t      sb_icount;      /* allocated inodes */
 131         __uint64_t      sb_ifree;       /* free inodes */
 132         __uint64_t      sb_fdblocks;    /* free data blocks */
 133         __uint64_t      sb_frextents;   /* free realtime extents */
 134         /*
 135          * End contiguous fields.
 136          */
 137         xfs_ino_t       sb_uquotino;    /* user quota inode */
 138         xfs_ino_t       sb_gquotino;    /* group quota inode */
 139         __uint16_t      sb_qflags;      /* quota flags */
 140         __uint8_t       sb_flags;       /* misc. flags */
 141         __uint8_t       sb_shared_vn;   /* shared version number */
 142         xfs_extlen_t    sb_inoalignmt;  /* inode chunk alignment, fsblocks */
 143         __uint32_t      sb_unit;        /* stripe or raid unit */
 144         __uint32_t      sb_width;       /* stripe or raid width */
 145         __uint8_t       sb_dirblklog;   /* log2 of dir block size (fsbs) */
 146         __uint8_t       sb_logsectlog;  /* log2 of the log sector size */
 147         __uint16_t      sb_logsectsize; /* sector size for the log, bytes */
 148         __uint32_t      sb_logsunit;    /* stripe unit size for the log */
 149 } xfs_sb_t;
 150
 151 /*
 152  * Sequence number values for the fields.
 153  */
 154 typedef enum {
 155         XFS_SBS_MAGICNUM, XFS_SBS_BLOCKSIZE, XFS_SBS_DBLOCKS, XFS_SBS_RBLOCKS,
 156         XFS_SBS_REXTENTS, XFS_SBS_UUID, XFS_SBS_LOGSTART, XFS_SBS_ROOTINO,
 157         XFS_SBS_RBMINO, XFS_SBS_RSUMINO, XFS_SBS_REXTSIZE, XFS_SBS_AGBLOCKS,
 158         XFS_SBS_AGCOUNT, XFS_SBS_RBMBLOCKS, XFS_SBS_LOGBLOCKS,
 159         XFS_SBS_VERSIONNUM, XFS_SBS_SECTSIZE, XFS_SBS_INODESIZE,
 160         XFS_SBS_INOPBLOCK, XFS_SBS_FNAME, XFS_SBS_BLOCKLOG,
 161         XFS_SBS_SECTLOG, XFS_SBS_INODELOG, XFS_SBS_INOPBLOG, XFS_SBS_AGBLKLOG,
 162         XFS_SBS_REXTSLOG, XFS_SBS_INPROGRESS, XFS_SBS_IMAX_PCT, XFS_SBS_ICOUNT,
 163         XFS_SBS_IFREE, XFS_SBS_FDBLOCKS, XFS_SBS_FREXTENTS, XFS_SBS_UQUOTINO,
 164         XFS_SBS_GQUOTINO, XFS_SBS_QFLAGS, XFS_SBS_FLAGS, XFS_SBS_SHARED_VN,
 165         XFS_SBS_INOALIGNMT, XFS_SBS_UNIT, XFS_SBS_WIDTH, XFS_SBS_DIRBLKLOG,
 166         XFS_SBS_LOGSECTLOG, XFS_SBS_LOGSECTSIZE, XFS_SBS_LOGSUNIT,
 167         XFS_SBS_FIELDCOUNT
 168 } xfs_sb_field_t;
 169
 170 /*
 171  * Mask values, defined based on the xfs_sb_field_t values.
 172  * Only define the ones we're using.
 173  */
 174 #define XFS_SB_MVAL(x)          (1LL << XFS_SBS_ ## x)
 175 #define XFS_SB_UUID             XFS_SB_MVAL(UUID)
 176 #define XFS_SB_FNAME            XFS_SB_MVAL(FNAME)
 177 #define XFS_SB_ROOTINO          XFS_SB_MVAL(ROOTINO)
 178 #define XFS_SB_RBMINO           XFS_SB_MVAL(RBMINO)
 179 #define XFS_SB_RSUMINO          XFS_SB_MVAL(RSUMINO)
 180 #define XFS_SB_VERSIONNUM       XFS_SB_MVAL(VERSIONNUM)
 181 #define XFS_SB_UQUOTINO         XFS_SB_MVAL(UQUOTINO)
 182 #define XFS_SB_GQUOTINO         XFS_SB_MVAL(GQUOTINO)
 183 #define XFS_SB_QFLAGS           XFS_SB_MVAL(QFLAGS)
 184 #define XFS_SB_SHARED_VN        XFS_SB_MVAL(SHARED_VN)
 185 #define XFS_SB_UNIT             XFS_SB_MVAL(UNIT)
 186 #define XFS_SB_WIDTH            XFS_SB_MVAL(WIDTH)
 187 #define XFS_SB_NUM_BITS         ((int)XFS_SBS_FIELDCOUNT)
 188 #define XFS_SB_ALL_BITS         ((1LL << XFS_SB_NUM_BITS) - 1)
 189 #define XFS_SB_MOD_BITS         \
 190         (XFS_SB_UUID | XFS_SB_ROOTINO | XFS_SB_RBMINO | XFS_SB_RSUMINO | \
 191          XFS_SB_VERSIONNUM | XFS_SB_UQUOTINO | XFS_SB_GQUOTINO | \
 192          XFS_SB_QFLAGS | XFS_SB_SHARED_VN | XFS_SB_UNIT | XFS_SB_WIDTH)
 193
 194 /*
 195  * Misc. Flags - warning - these will be cleared by xfs_repair unless
 196  * a feature bit is set when the flag is used.
 197  */
 198 #define XFS_SBF_NOFLAGS         0x00    /* no flags set */
 199 #define XFS_SBF_READONLY        0x01    /* only read-only mounts allowed */
 200
 201 /*
 202  * define max. shared version we can interoperate with
 203  */
 204 #define XFS_SB_MAX_SHARED_VN    0
 205
 206 #if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_SB_VERSION_NUM)
 207 int xfs_sb_version_num(xfs_sb_t *sbp);
 208 #define XFS_SB_VERSION_NUM(sbp) xfs_sb_version_num(sbp)
 209 #else
 210 #define XFS_SB_VERSION_NUM(sbp) ((sbp)->sb_versionnum & XFS_SB_VERSION_NUMBITS)
 211 #endif
 212
 213 #if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_SB_GOOD_VERSION)
 214 int xfs_sb_good_version(xfs_sb_t *sbp);
 215 #define XFS_SB_GOOD_VERSION(sbp)        xfs_sb_good_version(sbp)
 216 #else
 217 #define XFS_SB_GOOD_VERSION_INT(sbp)    \
 218         ((((sbp)->sb_versionnum >= XFS_SB_VERSION_1) && \
 219           ((sbp)->sb_versionnum <= XFS_SB_VERSION_3)) || \
 220          ((XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \
 221           !((sbp)->sb_versionnum & ~XFS_SB_VERSION_OKREALBITS)
 222 #ifdef __KERNEL__
 223 #define XFS_SB_GOOD_VERSION(sbp)        \
 224         (XFS_SB_GOOD_VERSION_INT(sbp) && \
 225           (sbp)->sb_shared_vn <= XFS_SB_MAX_SHARED_VN) ))
 226 #else
 227 /*
 228  * extra 2 paren's here (( to unconfuse paren-matching editors
 229  * like vi because XFS_SB_GOOD_VERSION_INT is a partial expression
 230  * and the two XFS_SB_GOOD_VERSION's each 2 more close paren's to
 231  * complete the expression.
 232  */
 233 #define XFS_SB_GOOD_VERSION(sbp)        \
 234         (XFS_SB_GOOD_VERSION_INT(sbp) && \
 235           (!((sbp)->sb_versionnum & XFS_SB_VERSION_SHAREDBIT) || \
 236            (sbp)->sb_shared_vn <= XFS_SB_MAX_SHARED_VN)) ))
 237 #endif /* __KERNEL__ */
 238 #endif
 239
 240 #define XFS_SB_GOOD_SASH_VERSION(sbp)   \
 241         ((((sbp)->sb_versionnum >= XFS_SB_VERSION_1) && \
 242           ((sbp)->sb_versionnum <= XFS_SB_VERSION_3)) || \
 243          ((XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \
 244           !((sbp)->sb_versionnum & ~XFS_SB_VERSION_OKSASHBITS)))
 245
 246 #if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_SB_VERSION_TONEW)
 247 unsigned xfs_sb_version_tonew(unsigned v);
 248 #define XFS_SB_VERSION_TONEW(v) xfs_sb_version_tonew(v)
 249 #else
 250 #define XFS_SB_VERSION_TONEW(v) \
 251         ((((v) == XFS_SB_VERSION_1) ? \
 252                 0 : \
 253                 (((v) == XFS_SB_VERSION_2) ? \
 254                         XFS_SB_VERSION_ATTRBIT : \
 255                         (XFS_SB_VERSION_ATTRBIT | XFS_SB_VERSION_NLINKBIT))) | \
 256          XFS_SB_VERSION_4)
 257 #endif
 258
 259 #if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_SB_VERSION_TOOLD)
 260 unsigned xfs_sb_version_toold(unsigned v);
 261 #define XFS_SB_VERSION_TOOLD(v) xfs_sb_version_toold(v)
 262 #else
 263 #define XFS_SB_VERSION_TOOLD(v) \
 264         (((v) & (XFS_SB_VERSION_QUOTABIT | XFS_SB_VERSION_ALIGNBIT)) ? \
 265                 0 : \
 266                 (((v) & XFS_SB_VERSION_NLINKBIT) ? \
 267                         XFS_SB_VERSION_3 : \
 268                         (((v) & XFS_SB_VERSION_ATTRBIT) ?  \
 269                                 XFS_SB_VERSION_2 : \
 270                                 XFS_SB_VERSION_1)))
 271 #endif
 272
 273 #if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_SB_VERSION_HASATTR)
 274 int xfs_sb_version_hasattr(xfs_sb_t *sbp);
 275 #define XFS_SB_VERSION_HASATTR(sbp)     xfs_sb_version_hasattr(sbp)
 276 #else
 277 #define XFS_SB_VERSION_HASATTR(sbp)     \
 278         (((sbp)->sb_versionnum == XFS_SB_VERSION_2) || \
 279          ((sbp)->sb_versionnum == XFS_SB_VERSION_3) || \
 280          ((XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \
 281           ((sbp)->sb_versionnum & XFS_SB_VERSION_ATTRBIT)))
 282 #endif
 283
 284 #if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_SB_VERSION_ADDATTR)
 285 void xfs_sb_version_addattr(xfs_sb_t *sbp);
 286 #define XFS_SB_VERSION_ADDATTR(sbp)     xfs_sb_version_addattr(sbp)
 287 #else
 288 #define XFS_SB_VERSION_ADDATTR(sbp)     \
 289         ((sbp)->sb_versionnum = \
 290          (((sbp)->sb_versionnum == XFS_SB_VERSION_1) ? \
 291                 XFS_SB_VERSION_2 : \
 292                 ((XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) ? \
 293                         ((sbp)->sb_versionnum | XFS_SB_VERSION_ATTRBIT) : \
 294                         (XFS_SB_VERSION_4 | XFS_SB_VERSION_ATTRBIT))))
 295 #endif
 296
 297 #if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_SB_VERSION_HASNLINK)
 298 int xfs_sb_version_hasnlink(xfs_sb_t *sbp);
 299 #define XFS_SB_VERSION_HASNLINK(sbp)    xfs_sb_version_hasnlink(sbp)
 300 #else
 301 #define XFS_SB_VERSION_HASNLINK(sbp)    \
 302         (((sbp)->sb_versionnum == XFS_SB_VERSION_3) || \
 303          ((XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \
 304           ((sbp)->sb_versionnum & XFS_SB_VERSION_NLINKBIT)))
 305 #endif
 306
 307 #if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_SB_VERSION_ADDNLINK)
 308 void xfs_sb_version_addnlink(xfs_sb_t *sbp);
 309 #define XFS_SB_VERSION_ADDNLINK(sbp)    xfs_sb_version_addnlink(sbp)
 310 #else
 311 #define XFS_SB_VERSION_ADDNLINK(sbp)    \
 312         ((sbp)->sb_versionnum = \
 313          ((sbp)->sb_versionnum <= XFS_SB_VERSION_2 ? \
 314                 XFS_SB_VERSION_3 : \
 315                 ((sbp)->sb_versionnum | XFS_SB_VERSION_NLINKBIT)))
 316 #endif
 317
 318 #if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_SB_VERSION_HASQUOTA)
 319 int xfs_sb_version_hasquota(xfs_sb_t *sbp);
 320 #define XFS_SB_VERSION_HASQUOTA(sbp)    xfs_sb_version_hasquota(sbp)
 321 #else
 322 #define XFS_SB_VERSION_HASQUOTA(sbp)    \
 323         ((XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \
 324          ((sbp)->sb_versionnum & XFS_SB_VERSION_QUOTABIT))
 325 #endif
 326
 327 #if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_SB_VERSION_ADDQUOTA)
 328 void xfs_sb_version_addquota(xfs_sb_t *sbp);
 329 #define XFS_SB_VERSION_ADDQUOTA(sbp)    xfs_sb_version_addquota(sbp)
 330 #else
 331 #define XFS_SB_VERSION_ADDQUOTA(sbp)    \
 332         ((sbp)->sb_versionnum = \
 333          (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4 ? \
 334                 ((sbp)->sb_versionnum | XFS_SB_VERSION_QUOTABIT) : \
 335                 (XFS_SB_VERSION_TONEW((sbp)->sb_versionnum) | \
 336                  XFS_SB_VERSION_QUOTABIT)))
 337 #endif
 338
 339 #if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_SB_VERSION_HASALIGN)
 340 int xfs_sb_version_hasalign(xfs_sb_t *sbp);
 341 #define XFS_SB_VERSION_HASALIGN(sbp)    xfs_sb_version_hasalign(sbp)
 342 #else
 343 #define XFS_SB_VERSION_HASALIGN(sbp)    \
 344         ((XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \
 345          ((sbp)->sb_versionnum & XFS_SB_VERSION_ALIGNBIT))
 346 #endif
 347
 348 #if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_SB_VERSION_SUBALIGN)
 349 void xfs_sb_version_subalign(xfs_sb_t *sbp);
 350 #define XFS_SB_VERSION_SUBALIGN(sbp)    xfs_sb_version_subalign(sbp)
 351 #else
 352 #define XFS_SB_VERSION_SUBALIGN(sbp)    \
 353         ((sbp)->sb_versionnum = \
 354          XFS_SB_VERSION_TOOLD((sbp)->sb_versionnum & ~XFS_SB_VERSION_ALIGNBIT))
 355 #endif
 356
 357 #if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_SB_VERSION_HASDALIGN)
 358 int xfs_sb_version_hasdalign(xfs_sb_t *sbp);
 359 #define XFS_SB_VERSION_HASDALIGN(sbp)   xfs_sb_version_hasdalign(sbp)
 360 #else
 361 #define XFS_SB_VERSION_HASDALIGN(sbp)   \
 362         ((XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \
 363          ((sbp)->sb_versionnum & XFS_SB_VERSION_DALIGNBIT))
 364 #endif
 365
 366 #if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_SB_VERSION_ADDDALIGN)
 367 int xfs_sb_version_adddalign(xfs_sb_t *sbp);
 368 #define XFS_SB_VERSION_ADDDALIGN(sbp)   xfs_sb_version_adddalign(sbp)
 369 #else
 370 #define XFS_SB_VERSION_ADDDALIGN(sbp)   \
 371         ((sbp)->sb_versionnum = \
 372                 ((sbp)->sb_versionnum | XFS_SB_VERSION_DALIGNBIT))
 373 #endif
 374
 375 #if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_SB_VERSION_HASSHARED)
 376 int xfs_sb_version_hasshared(xfs_sb_t *sbp);
 377 #define XFS_SB_VERSION_HASSHARED(sbp)   xfs_sb_version_hasshared(sbp)
 378 #else
 379 #define XFS_SB_VERSION_HASSHARED(sbp)   \
 380         ((XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \
 381          ((sbp)->sb_versionnum & XFS_SB_VERSION_SHAREDBIT))
 382 #endif
 383
 384 #if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_SB_VERSION_ADDSHARED)
 385 int xfs_sb_version_addshared(xfs_sb_t *sbp);
 386 #define XFS_SB_VERSION_ADDSHARED(sbp)   xfs_sb_version_addshared(sbp)
 387 #else
 388 #define XFS_SB_VERSION_ADDSHARED(sbp)   \
 389         ((sbp)->sb_versionnum = \
 390                 ((sbp)->sb_versionnum | XFS_SB_VERSION_SHAREDBIT))
 391 #endif
 392
 393 #if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_SB_VERSION_SUBSHARED)
 394 int xfs_sb_version_subshared(xfs_sb_t *sbp);
 395 #define XFS_SB_VERSION_SUBSHARED(sbp)   xfs_sb_version_subshared(sbp)
 396 #else
 397 #define XFS_SB_VERSION_SUBSHARED(sbp)   \
 398         ((sbp)->sb_versionnum = \
 399                 ((sbp)->sb_versionnum & ~XFS_SB_VERSION_SHAREDBIT))
 400 #endif
 401
 402 #if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_SB_VERSION_HASDIRV2)
 403 int xfs_sb_version_hasdirv2(xfs_sb_t *sbp);
 404 #define XFS_SB_VERSION_HASDIRV2(sbp)    xfs_sb_version_hasdirv2(sbp)
 405 #else
 406 #define XFS_SB_VERSION_HASDIRV2(sbp)    \
 407         ((XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \
 408          ((sbp)->sb_versionnum & XFS_SB_VERSION_DIRV2BIT))
 409 #endif
 410
 411 #if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_SB_VERSION_HASLOGV2)
 412 int xfs_sb_version_haslogv2(xfs_sb_t *sbp);
 413 #define XFS_SB_VERSION_HASLOGV2(sbp)   xfs_sb_version_haslogv2(sbp)
 414 #else
 415 #define XFS_SB_VERSION_HASLOGV2(sbp)   \
 416         ((XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \
 417         ((sbp)->sb_versionnum & XFS_SB_VERSION_LOGV2BIT))
 418 #endif
 419
 420 #if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_SB_VERSION_HASEXTFLGBIT)
 421 int xfs_sb_version_hasextflgbit(xfs_sb_t *sbp);
 422 #define XFS_SB_VERSION_HASEXTFLGBIT(sbp)        xfs_sb_version_hasextflgbit(sbp)
 423 #else
 424 #define XFS_SB_VERSION_HASEXTFLGBIT(sbp)        \
 425         ((XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \
 426          ((sbp)->sb_versionnum & XFS_SB_VERSION_EXTFLGBIT))
 427 #endif
 428
 429 #if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_SB_VERSION_ADDEXTFLGBIT)
 430 int xfs_sb_version_addextflgbit(xfs_sb_t *sbp);
 431 #define XFS_SB_VERSION_ADDEXTFLGBIT(sbp)        xfs_sb_version_addextflgbit(sbp)
 432 #else
 433 #define XFS_SB_VERSION_ADDEXTFLGBIT(sbp)        \
 434         ((sbp)->sb_versionnum = \
 435                 ((sbp)->sb_versionnum | XFS_SB_VERSION_EXTFLGBIT))
 436 #endif
 437
 438 #if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_SB_VERSION_SUBEXTFLGBIT)
 439 int xfs_sb_version_subextflgbit(xfs_sb_t *sbp);
 440 #define XFS_SB_VERSION_SUBEXTFLGBIT(sbp)        xfs_sb_version_subextflgbit(sbp)
 441 #else
 442 #define XFS_SB_VERSION_SUBEXTFLGBIT(sbp)        \
 443         ((sbp)->sb_versionnum = \
 444                 ((sbp)->sb_versionnum & ~XFS_SB_VERSION_EXTFLGBIT))
 445 #endif
 446
 447 #if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_SB_VERSION_HASSECTOR)
 448 int xfs_sb_version_hassector(xfs_sb_t *sbp);
 449 #define XFS_SB_VERSION_HASSECTOR(sbp)   xfs_sb_version_hassector(sbp)
 450 #else
 451 #define XFS_SB_VERSION_HASSECTOR(sbp)   \
 452         ((XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \
 453         ((sbp)->sb_versionnum & XFS_SB_VERSION_SECTORBIT))
 454 #endif
 455
 456 /*
 457  * end of superblock version macros
 458  */
 459
 460 #define XFS_SB_DADDR    ((xfs_daddr_t)0)        /* daddr in filesystem/ag */
 461 #if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_SB_BLOCK)
 462 xfs_agblock_t xfs_sb_block(struct xfs_mount *mp);
 463 #define XFS_SB_BLOCK(mp)        xfs_sb_block(mp)
 464 #else
 465 #define XFS_SB_BLOCK(mp)        XFS_HDR_BLOCK(mp, XFS_SB_DADDR)
 466 #endif
 467
 468 #if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_HDR_BLOCK)
 469 xfs_agblock_t xfs_hdr_block(struct xfs_mount *mp, xfs_daddr_t d);
 470 #define XFS_HDR_BLOCK(mp,d)     xfs_hdr_block(mp,d)
 471 #else
 472 #define XFS_HDR_BLOCK(mp,d)     ((xfs_agblock_t)(XFS_BB_TO_FSBT(mp,d)))
 473 #endif
 474 #if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_DADDR_TO_FSB)
 475 xfs_fsblock_t xfs_daddr_to_fsb(struct xfs_mount *mp, xfs_daddr_t d);
 476 #define XFS_DADDR_TO_FSB(mp,d)          xfs_daddr_to_fsb(mp,d)
 477 #else
 478 #define XFS_DADDR_TO_FSB(mp,d) \
 479         XFS_AGB_TO_FSB(mp, XFS_DADDR_TO_AGNO(mp,d), XFS_DADDR_TO_AGBNO(mp,d))
 480 #endif
 481 #if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_FSB_TO_DADDR)
 482 xfs_daddr_t xfs_fsb_to_daddr(struct xfs_mount *mp, xfs_fsblock_t fsbno);
 483 #define XFS_FSB_TO_DADDR(mp,fsbno)      xfs_fsb_to_daddr(mp,fsbno)
 484 #else
 485 #define XFS_FSB_TO_DADDR(mp,fsbno) \
 486         XFS_AGB_TO_DADDR(mp, XFS_FSB_TO_AGNO(mp,fsbno), \
 487                          XFS_FSB_TO_AGBNO(mp,fsbno))
 488 #endif
 489
 490 #if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_BUF_TO_SBP)
 491 xfs_sb_t *xfs_buf_to_sbp(struct xfs_buf *bp);
 492 #define XFS_BUF_TO_SBP(bp)      xfs_buf_to_sbp(bp)
 493 #else
 494 #define XFS_BUF_TO_SBP(bp)      ((xfs_sb_t *)XFS_BUF_PTR(bp))
 495 #endif
 496
 497 /*
 498  * File system sector to basic block conversions.
 499  */
 500 #define XFS_FSS_TO_BB(mp,sec)   ((sec) << (mp)->m_sectbb_log)
 501 #define XFS_BB_TO_FSS(mp,bb)    \
 502         (((bb) + (XFS_FSS_TO_BB(mp,1) - 1)) >> (mp)->m_sectbb_log)
 503 #define XFS_BB_TO_FSST(mp,bb)   ((bb) >> (mp)->m_sectbb_log)
 504
 505 /*
 506  * File system sector to byte conversions.
 507  */
 508 #define XFS_FSS_TO_B(mp,sectno) ((xfs_fsize_t)(sectno) << (mp)->m_sb.sb_sectlog)
 509 #define XFS_B_TO_FSST(mp,b)     (((__uint64_t)(b)) >> (mp)->m_sb.sb_sectlog)
 510
 511 /*
 512  * File system block to basic block conversions.
 513  */
 514 #define XFS_FSB_TO_BB(mp,fsbno) ((fsbno) << (mp)->m_blkbb_log)
 515 #define XFS_BB_TO_FSB(mp,bb)    \
 516         (((bb) + (XFS_FSB_TO_BB(mp,1) - 1)) >> (mp)->m_blkbb_log)
 517 #define XFS_BB_TO_FSBT(mp,bb)   ((bb) >> (mp)->m_blkbb_log)
 518 #define XFS_BB_FSB_OFFSET(mp,bb) ((bb) & ((mp)->m_bsize - 1))
 519
 520 /*
 521  * File system block to byte conversions.
 522  */
 523 #define XFS_FSB_TO_B(mp,fsbno)  ((xfs_fsize_t)(fsbno) << (mp)->m_sb.sb_blocklog)
 524 #define XFS_B_TO_FSB(mp,b)      \
 525         ((((__uint64_t)(b)) + (mp)->m_blockmask) >> (mp)->m_sb.sb_blocklog)
 526 #define XFS_B_TO_FSBT(mp,b)     (((__uint64_t)(b)) >> (mp)->m_sb.sb_blocklog)
 527 #define XFS_B_FSB_OFFSET(mp,b)  ((b) & (mp)->m_blockmask)
 528
 529 #endif  /* __XFS_SB_H__ */