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linux/fs/xfs/xfs_sb.h
Linus Torvalds 1da177e4c3 Linux-2.6.12-rc2 
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!
2005-04-16 15:20:36 -07:00

584 lines
22 KiB
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/*
* Copyright (c) 2000-2001 Silicon Graphics, Inc. All Rights Reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of version 2 of the GNU General Public License as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it would be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
*
* Further, this software is distributed without any warranty that it is
* free of the rightful claim of any third person regarding infringement
* or the like. Any license provided herein, whether implied or
* otherwise, applies only to this software file. Patent licenses, if
* any, provided herein do not apply to combinations of this program with
* other software, or any other product whatsoever.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write the Free Software Foundation, Inc., 59
* Temple Place - Suite 330, Boston MA 02111-1307, USA.
*
* Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
* Mountain View, CA 94043, or:
*
* http://www.sgi.com
*
* For further information regarding this notice, see:
*
* http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
*/
#ifndef __XFS_SB_H__
#define __XFS_SB_H__
/*
* Super block
* Fits into a sector-sized buffer at address 0 of each allocation group.
* Only the first of these is ever updated except during growfs.
*/
struct xfs_buf;
struct xfs_mount;
#define XFS_SB_MAGIC 0x58465342 /* 'XFSB' */
#define XFS_SB_VERSION_1 1 /* 5.3, 6.0.1, 6.1 */
#define XFS_SB_VERSION_2 2 /* 6.2 - attributes */
#define XFS_SB_VERSION_3 3 /* 6.2 - new inode version */
#define XFS_SB_VERSION_4 4 /* 6.2+ - bitmask version */
#define XFS_SB_VERSION_NUMBITS 0x000f
#define XFS_SB_VERSION_ALLFBITS 0xfff0
#define XFS_SB_VERSION_SASHFBITS 0xf000
#define XFS_SB_VERSION_REALFBITS 0x0ff0
#define XFS_SB_VERSION_ATTRBIT 0x0010
#define XFS_SB_VERSION_NLINKBIT 0x0020
#define XFS_SB_VERSION_QUOTABIT 0x0040
#define XFS_SB_VERSION_ALIGNBIT 0x0080
#define XFS_SB_VERSION_DALIGNBIT 0x0100
#define XFS_SB_VERSION_SHAREDBIT 0x0200
#define XFS_SB_VERSION_LOGV2BIT 0x0400
#define XFS_SB_VERSION_SECTORBIT 0x0800
#define XFS_SB_VERSION_EXTFLGBIT 0x1000
#define XFS_SB_VERSION_DIRV2BIT 0x2000
#define XFS_SB_VERSION_MOREBITSBIT 0x8000
#define XFS_SB_VERSION_OKSASHFBITS \
(XFS_SB_VERSION_EXTFLGBIT | \
XFS_SB_VERSION_DIRV2BIT)
#define XFS_SB_VERSION_OKREALFBITS \
(XFS_SB_VERSION_ATTRBIT | \
XFS_SB_VERSION_NLINKBIT | \
XFS_SB_VERSION_QUOTABIT | \
XFS_SB_VERSION_ALIGNBIT | \
XFS_SB_VERSION_DALIGNBIT | \
XFS_SB_VERSION_SHAREDBIT | \
XFS_SB_VERSION_LOGV2BIT | \
XFS_SB_VERSION_SECTORBIT)
#define XFS_SB_VERSION_OKSASHBITS \
(XFS_SB_VERSION_NUMBITS | \
XFS_SB_VERSION_REALFBITS | \
XFS_SB_VERSION_OKSASHFBITS)
#define XFS_SB_VERSION_OKREALBITS \
(XFS_SB_VERSION_NUMBITS | \
XFS_SB_VERSION_OKREALFBITS | \
XFS_SB_VERSION_OKSASHFBITS)
#define XFS_SB_VERSION_MKFS(ia,dia,extflag,dirv2,na,sflag,morebits) \
(((ia) || (dia) || (extflag) || (dirv2) || (na) || (sflag) || \
(morebits)) ? \
(XFS_SB_VERSION_4 | \
((ia) ? XFS_SB_VERSION_ALIGNBIT : 0) | \
((dia) ? XFS_SB_VERSION_DALIGNBIT : 0) | \
((extflag) ? XFS_SB_VERSION_EXTFLGBIT : 0) | \
((dirv2) ? XFS_SB_VERSION_DIRV2BIT : 0) | \
((na) ? XFS_SB_VERSION_LOGV2BIT : 0) | \
((sflag) ? XFS_SB_VERSION_SECTORBIT : 0) | \
((morebits) ? XFS_SB_VERSION_MOREBITSBIT : 0)) : \
XFS_SB_VERSION_1)
/*
* There are two words to hold XFS "feature" bits: the original
* word, sb_versionnum, and sb_features2. Whenever a bit is set in
* sb_features2, the feature bit XFS_SB_VERSION_MOREBITSBIT must be set.
*
* These defines represent bits in sb_features2.
*/
#define XFS_SB_VERSION2_REALFBITS 0x00ffffff /* Mask: features */
#define XFS_SB_VERSION2_RESERVED1BIT 0x00000001
#define XFS_SB_VERSION2_SASHFBITS 0xff000000 /* Mask: features that
require changing
PROM and SASH */
#define XFS_SB_VERSION2_OKREALFBITS \
(0)
#define XFS_SB_VERSION2_OKSASHFBITS \
(0)
#define XFS_SB_VERSION2_OKREALBITS \
(XFS_SB_VERSION2_OKREALFBITS | \
XFS_SB_VERSION2_OKSASHFBITS )
/*
* mkfs macro to set up sb_features2 word
*/
#define XFS_SB_VERSION2_MKFS(xyz) \
((xyz) ? 0 : 0)
typedef struct xfs_sb
{
__uint32_t sb_magicnum; /* magic number == XFS_SB_MAGIC */
__uint32_t sb_blocksize; /* logical block size, bytes */
xfs_drfsbno_t sb_dblocks; /* number of data blocks */
xfs_drfsbno_t sb_rblocks; /* number of realtime blocks */
xfs_drtbno_t sb_rextents; /* number of realtime extents */
uuid_t sb_uuid; /* file system unique id */
xfs_dfsbno_t sb_logstart; /* starting block of log if internal */
xfs_ino_t sb_rootino; /* root inode number */
xfs_ino_t sb_rbmino; /* bitmap inode for realtime extents */
xfs_ino_t sb_rsumino; /* summary inode for rt bitmap */
xfs_agblock_t sb_rextsize; /* realtime extent size, blocks */
xfs_agblock_t sb_agblocks; /* size of an allocation group */
xfs_agnumber_t sb_agcount; /* number of allocation groups */
xfs_extlen_t sb_rbmblocks; /* number of rt bitmap blocks */
xfs_extlen_t sb_logblocks; /* number of log blocks */
__uint16_t sb_versionnum; /* header version == XFS_SB_VERSION */
__uint16_t sb_sectsize; /* volume sector size, bytes */
__uint16_t sb_inodesize; /* inode size, bytes */
__uint16_t sb_inopblock; /* inodes per block */
char sb_fname[12]; /* file system name */
__uint8_t sb_blocklog; /* log2 of sb_blocksize */
__uint8_t sb_sectlog; /* log2 of sb_sectsize */
__uint8_t sb_inodelog; /* log2 of sb_inodesize */
__uint8_t sb_inopblog; /* log2 of sb_inopblock */
__uint8_t sb_agblklog; /* log2 of sb_agblocks (rounded up) */
__uint8_t sb_rextslog; /* log2 of sb_rextents */
__uint8_t sb_inprogress; /* mkfs is in progress, don't mount */
__uint8_t sb_imax_pct; /* max % of fs for inode space */
/* statistics */
/*
* These fields must remain contiguous. If you really
* want to change their layout, make sure you fix the
* code in xfs_trans_apply_sb_deltas().
*/
__uint64_t sb_icount; /* allocated inodes */
__uint64_t sb_ifree; /* free inodes */
__uint64_t sb_fdblocks; /* free data blocks */
__uint64_t sb_frextents; /* free realtime extents */
/*
* End contiguous fields.
*/
xfs_ino_t sb_uquotino; /* user quota inode */
xfs_ino_t sb_gquotino; /* group quota inode */
__uint16_t sb_qflags; /* quota flags */
__uint8_t sb_flags; /* misc. flags */
__uint8_t sb_shared_vn; /* shared version number */
xfs_extlen_t sb_inoalignmt; /* inode chunk alignment, fsblocks */
__uint32_t sb_unit; /* stripe or raid unit */
__uint32_t sb_width; /* stripe or raid width */
__uint8_t sb_dirblklog; /* log2 of dir block size (fsbs) */
__uint8_t sb_logsectlog; /* log2 of the log sector size */
__uint16_t sb_logsectsize; /* sector size for the log, bytes */
__uint32_t sb_logsunit; /* stripe unit size for the log */
__uint32_t sb_features2; /* additonal feature bits */
} xfs_sb_t;
/*
* Sequence number values for the fields.
*/
typedef enum {
XFS_SBS_MAGICNUM, XFS_SBS_BLOCKSIZE, XFS_SBS_DBLOCKS, XFS_SBS_RBLOCKS,
XFS_SBS_REXTENTS, XFS_SBS_UUID, XFS_SBS_LOGSTART, XFS_SBS_ROOTINO,
XFS_SBS_RBMINO, XFS_SBS_RSUMINO, XFS_SBS_REXTSIZE, XFS_SBS_AGBLOCKS,
XFS_SBS_AGCOUNT, XFS_SBS_RBMBLOCKS, XFS_SBS_LOGBLOCKS,
XFS_SBS_VERSIONNUM, XFS_SBS_SECTSIZE, XFS_SBS_INODESIZE,
XFS_SBS_INOPBLOCK, XFS_SBS_FNAME, XFS_SBS_BLOCKLOG,
XFS_SBS_SECTLOG, XFS_SBS_INODELOG, XFS_SBS_INOPBLOG, XFS_SBS_AGBLKLOG,
XFS_SBS_REXTSLOG, XFS_SBS_INPROGRESS, XFS_SBS_IMAX_PCT, XFS_SBS_ICOUNT,
XFS_SBS_IFREE, XFS_SBS_FDBLOCKS, XFS_SBS_FREXTENTS, XFS_SBS_UQUOTINO,
XFS_SBS_GQUOTINO, XFS_SBS_QFLAGS, XFS_SBS_FLAGS, XFS_SBS_SHARED_VN,
XFS_SBS_INOALIGNMT, XFS_SBS_UNIT, XFS_SBS_WIDTH, XFS_SBS_DIRBLKLOG,
XFS_SBS_LOGSECTLOG, XFS_SBS_LOGSECTSIZE, XFS_SBS_LOGSUNIT,
XFS_SBS_FEATURES2,
XFS_SBS_FIELDCOUNT
} xfs_sb_field_t;
/*
* Mask values, defined based on the xfs_sb_field_t values.
* Only define the ones we're using.
*/
#define XFS_SB_MVAL(x) (1LL << XFS_SBS_ ## x)
#define XFS_SB_UUID XFS_SB_MVAL(UUID)
#define XFS_SB_FNAME XFS_SB_MVAL(FNAME)
#define XFS_SB_ROOTINO XFS_SB_MVAL(ROOTINO)
#define XFS_SB_RBMINO XFS_SB_MVAL(RBMINO)
#define XFS_SB_RSUMINO XFS_SB_MVAL(RSUMINO)
#define XFS_SB_VERSIONNUM XFS_SB_MVAL(VERSIONNUM)
#define XFS_SB_UQUOTINO XFS_SB_MVAL(UQUOTINO)
#define XFS_SB_GQUOTINO XFS_SB_MVAL(GQUOTINO)
#define XFS_SB_QFLAGS XFS_SB_MVAL(QFLAGS)
#define XFS_SB_SHARED_VN XFS_SB_MVAL(SHARED_VN)
#define XFS_SB_UNIT XFS_SB_MVAL(UNIT)
#define XFS_SB_WIDTH XFS_SB_MVAL(WIDTH)
#define XFS_SB_NUM_BITS ((int)XFS_SBS_FIELDCOUNT)
#define XFS_SB_ALL_BITS ((1LL << XFS_SB_NUM_BITS) - 1)
#define XFS_SB_MOD_BITS \
(XFS_SB_UUID | XFS_SB_ROOTINO | XFS_SB_RBMINO | XFS_SB_RSUMINO | \
XFS_SB_VERSIONNUM | XFS_SB_UQUOTINO | XFS_SB_GQUOTINO | \
XFS_SB_QFLAGS | XFS_SB_SHARED_VN | XFS_SB_UNIT | XFS_SB_WIDTH)
/*
* Misc. Flags - warning - these will be cleared by xfs_repair unless
* a feature bit is set when the flag is used.
*/
#define XFS_SBF_NOFLAGS 0x00 /* no flags set */
#define XFS_SBF_READONLY 0x01 /* only read-only mounts allowed */
/*
* define max. shared version we can interoperate with
*/
#define XFS_SB_MAX_SHARED_VN 0
#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_SB_VERSION_NUM)
int xfs_sb_version_num(xfs_sb_t *sbp);
#define XFS_SB_VERSION_NUM(sbp) xfs_sb_version_num(sbp)
#else
#define XFS_SB_VERSION_NUM(sbp) ((sbp)->sb_versionnum & XFS_SB_VERSION_NUMBITS)
#endif
#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_SB_GOOD_VERSION)
int xfs_sb_good_version(xfs_sb_t *sbp);
#define XFS_SB_GOOD_VERSION(sbp) xfs_sb_good_version(sbp)
#else
#define XFS_SB_GOOD_VERSION_INT(sbp) \
((((sbp)->sb_versionnum >= XFS_SB_VERSION_1) && \
((sbp)->sb_versionnum <= XFS_SB_VERSION_3)) || \
((XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \
!(((sbp)->sb_versionnum & ~XFS_SB_VERSION_OKREALBITS) || \
(((sbp)->sb_versionnum & XFS_SB_VERSION_MOREBITSBIT) && \
((sbp)->sb_features2 & ~XFS_SB_VERSION2_OKREALBITS)))
#ifdef __KERNEL__
#define XFS_SB_GOOD_VERSION(sbp) \
(XFS_SB_GOOD_VERSION_INT(sbp) && \
(sbp)->sb_shared_vn <= XFS_SB_MAX_SHARED_VN) ))
#else
/*
* extra 2 paren's here (( to unconfuse paren-matching editors
* like vi because XFS_SB_GOOD_VERSION_INT is a partial expression
* and the two XFS_SB_GOOD_VERSION's each 2 more close paren's to
* complete the expression.
*/
#define XFS_SB_GOOD_VERSION(sbp) \
(XFS_SB_GOOD_VERSION_INT(sbp) && \
(!((sbp)->sb_versionnum & XFS_SB_VERSION_SHAREDBIT) || \
(sbp)->sb_shared_vn <= XFS_SB_MAX_SHARED_VN)) ))
#endif /* __KERNEL__ */
#endif
#define XFS_SB_GOOD_SASH_VERSION(sbp) \
((((sbp)->sb_versionnum >= XFS_SB_VERSION_1) && \
((sbp)->sb_versionnum <= XFS_SB_VERSION_3)) || \
((XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \
!((sbp)->sb_versionnum & ~XFS_SB_VERSION_OKSASHBITS)))
#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_SB_VERSION_TONEW)
unsigned xfs_sb_version_tonew(unsigned v);
#define XFS_SB_VERSION_TONEW(v) xfs_sb_version_tonew(v)
#else
#define XFS_SB_VERSION_TONEW(v) \
((((v) == XFS_SB_VERSION_1) ? \
0 : \
(((v) == XFS_SB_VERSION_2) ? \
XFS_SB_VERSION_ATTRBIT : \
(XFS_SB_VERSION_ATTRBIT | XFS_SB_VERSION_NLINKBIT))) | \
XFS_SB_VERSION_4)
#endif
#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_SB_VERSION_TOOLD)
unsigned xfs_sb_version_toold(unsigned v);
#define XFS_SB_VERSION_TOOLD(v) xfs_sb_version_toold(v)
#else
#define XFS_SB_VERSION_TOOLD(v) \
(((v) & (XFS_SB_VERSION_QUOTABIT | XFS_SB_VERSION_ALIGNBIT)) ? \
0 : \
(((v) & XFS_SB_VERSION_NLINKBIT) ? \
XFS_SB_VERSION_3 : \
(((v) & XFS_SB_VERSION_ATTRBIT) ? \
XFS_SB_VERSION_2 : \
XFS_SB_VERSION_1)))
#endif
#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_SB_VERSION_HASATTR)
int xfs_sb_version_hasattr(xfs_sb_t *sbp);
#define XFS_SB_VERSION_HASATTR(sbp) xfs_sb_version_hasattr(sbp)
#else
#define XFS_SB_VERSION_HASATTR(sbp) \
(((sbp)->sb_versionnum == XFS_SB_VERSION_2) || \
((sbp)->sb_versionnum == XFS_SB_VERSION_3) || \
((XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \
((sbp)->sb_versionnum & XFS_SB_VERSION_ATTRBIT)))
#endif
#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_SB_VERSION_ADDATTR)
void xfs_sb_version_addattr(xfs_sb_t *sbp);
#define XFS_SB_VERSION_ADDATTR(sbp) xfs_sb_version_addattr(sbp)
#else
#define XFS_SB_VERSION_ADDATTR(sbp) \
((sbp)->sb_versionnum = \
(((sbp)->sb_versionnum == XFS_SB_VERSION_1) ? \
XFS_SB_VERSION_2 : \
((XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) ? \
((sbp)->sb_versionnum | XFS_SB_VERSION_ATTRBIT) : \
(XFS_SB_VERSION_4 | XFS_SB_VERSION_ATTRBIT))))
#endif
#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_SB_VERSION_HASNLINK)
int xfs_sb_version_hasnlink(xfs_sb_t *sbp);
#define XFS_SB_VERSION_HASNLINK(sbp) xfs_sb_version_hasnlink(sbp)
#else
#define XFS_SB_VERSION_HASNLINK(sbp) \
(((sbp)->sb_versionnum == XFS_SB_VERSION_3) || \
((XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \
((sbp)->sb_versionnum & XFS_SB_VERSION_NLINKBIT)))
#endif
#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_SB_VERSION_ADDNLINK)
void xfs_sb_version_addnlink(xfs_sb_t *sbp);
#define XFS_SB_VERSION_ADDNLINK(sbp) xfs_sb_version_addnlink(sbp)
#else
#define XFS_SB_VERSION_ADDNLINK(sbp) \
((sbp)->sb_versionnum = \
((sbp)->sb_versionnum <= XFS_SB_VERSION_2 ? \
XFS_SB_VERSION_3 : \
((sbp)->sb_versionnum | XFS_SB_VERSION_NLINKBIT)))
#endif
#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_SB_VERSION_HASQUOTA)
int xfs_sb_version_hasquota(xfs_sb_t *sbp);
#define XFS_SB_VERSION_HASQUOTA(sbp) xfs_sb_version_hasquota(sbp)
#else
#define XFS_SB_VERSION_HASQUOTA(sbp) \
((XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \
((sbp)->sb_versionnum & XFS_SB_VERSION_QUOTABIT))
#endif
#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_SB_VERSION_ADDQUOTA)
void xfs_sb_version_addquota(xfs_sb_t *sbp);
#define XFS_SB_VERSION_ADDQUOTA(sbp) xfs_sb_version_addquota(sbp)
#else
#define XFS_SB_VERSION_ADDQUOTA(sbp) \
((sbp)->sb_versionnum = \
(XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4 ? \
((sbp)->sb_versionnum | XFS_SB_VERSION_QUOTABIT) : \
(XFS_SB_VERSION_TONEW((sbp)->sb_versionnum) | \
XFS_SB_VERSION_QUOTABIT)))
#endif
#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_SB_VERSION_HASALIGN)
int xfs_sb_version_hasalign(xfs_sb_t *sbp);
#define XFS_SB_VERSION_HASALIGN(sbp) xfs_sb_version_hasalign(sbp)
#else
#define XFS_SB_VERSION_HASALIGN(sbp) \
((XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \
((sbp)->sb_versionnum & XFS_SB_VERSION_ALIGNBIT))
#endif
#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_SB_VERSION_SUBALIGN)
void xfs_sb_version_subalign(xfs_sb_t *sbp);
#define XFS_SB_VERSION_SUBALIGN(sbp) xfs_sb_version_subalign(sbp)
#else
#define XFS_SB_VERSION_SUBALIGN(sbp) \
((sbp)->sb_versionnum = \
XFS_SB_VERSION_TOOLD((sbp)->sb_versionnum & ~XFS_SB_VERSION_ALIGNBIT))
#endif
#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_SB_VERSION_HASDALIGN)
int xfs_sb_version_hasdalign(xfs_sb_t *sbp);
#define XFS_SB_VERSION_HASDALIGN(sbp) xfs_sb_version_hasdalign(sbp)
#else
#define XFS_SB_VERSION_HASDALIGN(sbp) \
((XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \
((sbp)->sb_versionnum & XFS_SB_VERSION_DALIGNBIT))
#endif
#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_SB_VERSION_ADDDALIGN)
int xfs_sb_version_adddalign(xfs_sb_t *sbp);
#define XFS_SB_VERSION_ADDDALIGN(sbp) xfs_sb_version_adddalign(sbp)
#else
#define XFS_SB_VERSION_ADDDALIGN(sbp) \
((sbp)->sb_versionnum = \
((sbp)->sb_versionnum | XFS_SB_VERSION_DALIGNBIT))
#endif
#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_SB_VERSION_HASSHARED)
int xfs_sb_version_hasshared(xfs_sb_t *sbp);
#define XFS_SB_VERSION_HASSHARED(sbp) xfs_sb_version_hasshared(sbp)
#else
#define XFS_SB_VERSION_HASSHARED(sbp) \
((XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \
((sbp)->sb_versionnum & XFS_SB_VERSION_SHAREDBIT))
#endif
#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_SB_VERSION_ADDSHARED)
int xfs_sb_version_addshared(xfs_sb_t *sbp);
#define XFS_SB_VERSION_ADDSHARED(sbp) xfs_sb_version_addshared(sbp)
#else
#define XFS_SB_VERSION_ADDSHARED(sbp) \
((sbp)->sb_versionnum = \
((sbp)->sb_versionnum | XFS_SB_VERSION_SHAREDBIT))
#endif
#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_SB_VERSION_SUBSHARED)
int xfs_sb_version_subshared(xfs_sb_t *sbp);
#define XFS_SB_VERSION_SUBSHARED(sbp) xfs_sb_version_subshared(sbp)
#else
#define XFS_SB_VERSION_SUBSHARED(sbp) \
((sbp)->sb_versionnum = \
((sbp)->sb_versionnum & ~XFS_SB_VERSION_SHAREDBIT))
#endif
#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_SB_VERSION_HASDIRV2)
int xfs_sb_version_hasdirv2(xfs_sb_t *sbp);
#define XFS_SB_VERSION_HASDIRV2(sbp) xfs_sb_version_hasdirv2(sbp)
#else
#define XFS_SB_VERSION_HASDIRV2(sbp) \
((XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \
((sbp)->sb_versionnum & XFS_SB_VERSION_DIRV2BIT))
#endif
#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_SB_VERSION_HASLOGV2)
int xfs_sb_version_haslogv2(xfs_sb_t *sbp);
#define XFS_SB_VERSION_HASLOGV2(sbp) xfs_sb_version_haslogv2(sbp)
#else
#define XFS_SB_VERSION_HASLOGV2(sbp) \
((XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \
((sbp)->sb_versionnum & XFS_SB_VERSION_LOGV2BIT))
#endif
#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_SB_VERSION_HASEXTFLGBIT)
int xfs_sb_version_hasextflgbit(xfs_sb_t *sbp);
#define XFS_SB_VERSION_HASEXTFLGBIT(sbp) xfs_sb_version_hasextflgbit(sbp)
#else
#define XFS_SB_VERSION_HASEXTFLGBIT(sbp) \
((XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \
((sbp)->sb_versionnum & XFS_SB_VERSION_EXTFLGBIT))
#endif
#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_SB_VERSION_ADDEXTFLGBIT)
int xfs_sb_version_addextflgbit(xfs_sb_t *sbp);
#define XFS_SB_VERSION_ADDEXTFLGBIT(sbp) xfs_sb_version_addextflgbit(sbp)
#else
#define XFS_SB_VERSION_ADDEXTFLGBIT(sbp) \
((sbp)->sb_versionnum = \
((sbp)->sb_versionnum | XFS_SB_VERSION_EXTFLGBIT))
#endif
#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_SB_VERSION_SUBEXTFLGBIT)
int xfs_sb_version_subextflgbit(xfs_sb_t *sbp);
#define XFS_SB_VERSION_SUBEXTFLGBIT(sbp) xfs_sb_version_subextflgbit(sbp)
#else
#define XFS_SB_VERSION_SUBEXTFLGBIT(sbp) \
((sbp)->sb_versionnum = \
((sbp)->sb_versionnum & ~XFS_SB_VERSION_EXTFLGBIT))
#endif
#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_SB_VERSION_HASSECTOR)
int xfs_sb_version_hassector(xfs_sb_t *sbp);
#define XFS_SB_VERSION_HASSECTOR(sbp) xfs_sb_version_hassector(sbp)
#else
#define XFS_SB_VERSION_HASSECTOR(sbp) \
((XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \
((sbp)->sb_versionnum & XFS_SB_VERSION_SECTORBIT))
#endif
#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_SB_VERSION_HASMOREBITSBIT)
int xfs_sb_version_hasmorebits(xfs_sb_t *sbp);
#define XFS_SB_VERSION_HASMOREBITS(sbp) xfs_sb_version_hasmorebits(sbp)
#else
#define XFS_SB_VERSION_HASMOREBITS(sbp) \
((XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \
((sbp)->sb_versionnum & XFS_SB_VERSION_MOREBITSBIT))
#endif
/*
* sb_features2 bit version macros.
*
* For example, for a bit defined as XFS_SB_VERSION2_YBIT, has a macro:
*
* SB_VERSION_HASYBIT(xfs_sb_t *sbp)
* ((XFS_SB_VERSION_HASMOREBITS(sbp) &&
* ((sbp)->sb_versionnum & XFS_SB_VERSION2_YBIT)
*/
/*
* end of superblock version macros
*/
#define XFS_SB_DADDR ((xfs_daddr_t)0) /* daddr in filesystem/ag */
#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_SB_BLOCK)
xfs_agblock_t xfs_sb_block(struct xfs_mount *mp);
#define XFS_SB_BLOCK(mp) xfs_sb_block(mp)
#else
#define XFS_SB_BLOCK(mp) XFS_HDR_BLOCK(mp, XFS_SB_DADDR)
#endif
#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_HDR_BLOCK)
xfs_agblock_t xfs_hdr_block(struct xfs_mount *mp, xfs_daddr_t d);
#define XFS_HDR_BLOCK(mp,d) xfs_hdr_block(mp,d)
#else
#define XFS_HDR_BLOCK(mp,d) ((xfs_agblock_t)(XFS_BB_TO_FSBT(mp,d)))
#endif
#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_DADDR_TO_FSB)
xfs_fsblock_t xfs_daddr_to_fsb(struct xfs_mount *mp, xfs_daddr_t d);
#define XFS_DADDR_TO_FSB(mp,d) xfs_daddr_to_fsb(mp,d)
#else
#define XFS_DADDR_TO_FSB(mp,d) \
XFS_AGB_TO_FSB(mp, XFS_DADDR_TO_AGNO(mp,d), XFS_DADDR_TO_AGBNO(mp,d))
#endif
#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_FSB_TO_DADDR)
xfs_daddr_t xfs_fsb_to_daddr(struct xfs_mount *mp, xfs_fsblock_t fsbno);
#define XFS_FSB_TO_DADDR(mp,fsbno) xfs_fsb_to_daddr(mp,fsbno)
#else
#define XFS_FSB_TO_DADDR(mp,fsbno) \
XFS_AGB_TO_DADDR(mp, XFS_FSB_TO_AGNO(mp,fsbno), \
XFS_FSB_TO_AGBNO(mp,fsbno))
#endif
#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_BUF_TO_SBP)
xfs_sb_t *xfs_buf_to_sbp(struct xfs_buf *bp);
#define XFS_BUF_TO_SBP(bp) xfs_buf_to_sbp(bp)
#else
#define XFS_BUF_TO_SBP(bp) ((xfs_sb_t *)XFS_BUF_PTR(bp))
#endif
/*
* File system sector to basic block conversions.
*/
#define XFS_FSS_TO_BB(mp,sec) ((sec) << (mp)->m_sectbb_log)
#define XFS_BB_TO_FSS(mp,bb) \
(((bb) + (XFS_FSS_TO_BB(mp,1) - 1)) >> (mp)->m_sectbb_log)
#define XFS_BB_TO_FSST(mp,bb) ((bb) >> (mp)->m_sectbb_log)
/*
* File system sector to byte conversions.
*/
#define XFS_FSS_TO_B(mp,sectno) ((xfs_fsize_t)(sectno) << (mp)->m_sb.sb_sectlog)
#define XFS_B_TO_FSST(mp,b) (((__uint64_t)(b)) >> (mp)->m_sb.sb_sectlog)
/*
* File system block to basic block conversions.
*/
#define XFS_FSB_TO_BB(mp,fsbno) ((fsbno) << (mp)->m_blkbb_log)
#define XFS_BB_TO_FSB(mp,bb) \
(((bb) + (XFS_FSB_TO_BB(mp,1) - 1)) >> (mp)->m_blkbb_log)
#define XFS_BB_TO_FSBT(mp,bb) ((bb) >> (mp)->m_blkbb_log)
#define XFS_BB_FSB_OFFSET(mp,bb) ((bb) & ((mp)->m_bsize - 1))
/*
* File system block to byte conversions.
*/
#define XFS_FSB_TO_B(mp,fsbno) ((xfs_fsize_t)(fsbno) << (mp)->m_sb.sb_blocklog)
#define XFS_B_TO_FSB(mp,b) \
((((__uint64_t)(b)) + (mp)->m_blockmask) >> (mp)->m_sb.sb_blocklog)
#define XFS_B_TO_FSBT(mp,b) (((__uint64_t)(b)) >> (mp)->m_sb.sb_blocklog)
#define XFS_B_FSB_OFFSET(mp,b) ((b) & (mp)->m_blockmask)
#endif /* __XFS_SB_H__ */
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