510 lines
18 KiB
C
510 lines
18 KiB
C
/*
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* Copyright (c) 2000-2005 Silicon Graphics, Inc.
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* All Rights Reserved.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it would be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef __XFS_SB_H__
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#define __XFS_SB_H__
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/*
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* Super block
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* Fits into a sector-sized buffer at address 0 of each allocation group.
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* Only the first of these is ever updated except during growfs.
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*/
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struct xfs_buf;
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struct xfs_mount;
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#define XFS_SB_MAGIC 0x58465342 /* 'XFSB' */
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#define XFS_SB_VERSION_1 1 /* 5.3, 6.0.1, 6.1 */
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#define XFS_SB_VERSION_2 2 /* 6.2 - attributes */
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#define XFS_SB_VERSION_3 3 /* 6.2 - new inode version */
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#define XFS_SB_VERSION_4 4 /* 6.2+ - bitmask version */
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#define XFS_SB_VERSION_NUMBITS 0x000f
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#define XFS_SB_VERSION_ALLFBITS 0xfff0
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#define XFS_SB_VERSION_SASHFBITS 0xf000
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#define XFS_SB_VERSION_REALFBITS 0x0ff0
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#define XFS_SB_VERSION_ATTRBIT 0x0010
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#define XFS_SB_VERSION_NLINKBIT 0x0020
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#define XFS_SB_VERSION_QUOTABIT 0x0040
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#define XFS_SB_VERSION_ALIGNBIT 0x0080
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#define XFS_SB_VERSION_DALIGNBIT 0x0100
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#define XFS_SB_VERSION_SHAREDBIT 0x0200
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#define XFS_SB_VERSION_LOGV2BIT 0x0400
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#define XFS_SB_VERSION_SECTORBIT 0x0800
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#define XFS_SB_VERSION_EXTFLGBIT 0x1000
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#define XFS_SB_VERSION_DIRV2BIT 0x2000
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#define XFS_SB_VERSION_MOREBITSBIT 0x8000
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#define XFS_SB_VERSION_OKSASHFBITS \
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(XFS_SB_VERSION_EXTFLGBIT | \
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XFS_SB_VERSION_DIRV2BIT)
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#define XFS_SB_VERSION_OKREALFBITS \
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(XFS_SB_VERSION_ATTRBIT | \
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XFS_SB_VERSION_NLINKBIT | \
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XFS_SB_VERSION_QUOTABIT | \
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XFS_SB_VERSION_ALIGNBIT | \
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XFS_SB_VERSION_DALIGNBIT | \
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XFS_SB_VERSION_SHAREDBIT | \
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XFS_SB_VERSION_LOGV2BIT | \
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XFS_SB_VERSION_SECTORBIT | \
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XFS_SB_VERSION_MOREBITSBIT)
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#define XFS_SB_VERSION_OKSASHBITS \
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(XFS_SB_VERSION_NUMBITS | \
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XFS_SB_VERSION_REALFBITS | \
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XFS_SB_VERSION_OKSASHFBITS)
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#define XFS_SB_VERSION_OKREALBITS \
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(XFS_SB_VERSION_NUMBITS | \
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XFS_SB_VERSION_OKREALFBITS | \
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XFS_SB_VERSION_OKSASHFBITS)
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#define XFS_SB_VERSION_MKFS(ia,dia,extflag,dirv2,na,sflag,morebits) \
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(((ia) || (dia) || (extflag) || (dirv2) || (na) || (sflag) || \
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(morebits)) ? \
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(XFS_SB_VERSION_4 | \
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((ia) ? XFS_SB_VERSION_ALIGNBIT : 0) | \
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((dia) ? XFS_SB_VERSION_DALIGNBIT : 0) | \
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((extflag) ? XFS_SB_VERSION_EXTFLGBIT : 0) | \
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((dirv2) ? XFS_SB_VERSION_DIRV2BIT : 0) | \
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((na) ? XFS_SB_VERSION_LOGV2BIT : 0) | \
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((sflag) ? XFS_SB_VERSION_SECTORBIT : 0) | \
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((morebits) ? XFS_SB_VERSION_MOREBITSBIT : 0)) : \
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XFS_SB_VERSION_1)
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/*
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* There are two words to hold XFS "feature" bits: the original
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* word, sb_versionnum, and sb_features2. Whenever a bit is set in
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* sb_features2, the feature bit XFS_SB_VERSION_MOREBITSBIT must be set.
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*
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* These defines represent bits in sb_features2.
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*/
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#define XFS_SB_VERSION2_REALFBITS 0x00ffffff /* Mask: features */
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#define XFS_SB_VERSION2_RESERVED1BIT 0x00000001
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#define XFS_SB_VERSION2_RESERVED2BIT 0x00000002
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#define XFS_SB_VERSION2_RESERVED4BIT 0x00000004
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#define XFS_SB_VERSION2_ATTR2BIT 0x00000008 /* Inline attr rework */
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#define XFS_SB_VERSION2_SASHFBITS 0xff000000 /* Mask: features that
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require changing
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PROM and SASH */
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#define XFS_SB_VERSION2_OKREALFBITS \
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(XFS_SB_VERSION2_ATTR2BIT)
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#define XFS_SB_VERSION2_OKSASHFBITS \
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(0)
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#define XFS_SB_VERSION2_OKREALBITS \
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(XFS_SB_VERSION2_OKREALFBITS | \
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XFS_SB_VERSION2_OKSASHFBITS )
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/*
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* mkfs macro to set up sb_features2 word
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*/
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#define XFS_SB_VERSION2_MKFS(resvd1, sbcntr) 0
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typedef struct xfs_sb
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{
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__uint32_t sb_magicnum; /* magic number == XFS_SB_MAGIC */
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__uint32_t sb_blocksize; /* logical block size, bytes */
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xfs_drfsbno_t sb_dblocks; /* number of data blocks */
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xfs_drfsbno_t sb_rblocks; /* number of realtime blocks */
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xfs_drtbno_t sb_rextents; /* number of realtime extents */
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uuid_t sb_uuid; /* file system unique id */
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xfs_dfsbno_t sb_logstart; /* starting block of log if internal */
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xfs_ino_t sb_rootino; /* root inode number */
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xfs_ino_t sb_rbmino; /* bitmap inode for realtime extents */
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xfs_ino_t sb_rsumino; /* summary inode for rt bitmap */
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xfs_agblock_t sb_rextsize; /* realtime extent size, blocks */
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xfs_agblock_t sb_agblocks; /* size of an allocation group */
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xfs_agnumber_t sb_agcount; /* number of allocation groups */
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xfs_extlen_t sb_rbmblocks; /* number of rt bitmap blocks */
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xfs_extlen_t sb_logblocks; /* number of log blocks */
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__uint16_t sb_versionnum; /* header version == XFS_SB_VERSION */
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__uint16_t sb_sectsize; /* volume sector size, bytes */
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__uint16_t sb_inodesize; /* inode size, bytes */
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__uint16_t sb_inopblock; /* inodes per block */
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char sb_fname[12]; /* file system name */
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__uint8_t sb_blocklog; /* log2 of sb_blocksize */
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__uint8_t sb_sectlog; /* log2 of sb_sectsize */
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__uint8_t sb_inodelog; /* log2 of sb_inodesize */
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__uint8_t sb_inopblog; /* log2 of sb_inopblock */
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__uint8_t sb_agblklog; /* log2 of sb_agblocks (rounded up) */
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__uint8_t sb_rextslog; /* log2 of sb_rextents */
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__uint8_t sb_inprogress; /* mkfs is in progress, don't mount */
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__uint8_t sb_imax_pct; /* max % of fs for inode space */
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/* statistics */
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/*
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* These fields must remain contiguous. If you really
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* want to change their layout, make sure you fix the
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* code in xfs_trans_apply_sb_deltas().
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*/
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__uint64_t sb_icount; /* allocated inodes */
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__uint64_t sb_ifree; /* free inodes */
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__uint64_t sb_fdblocks; /* free data blocks */
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__uint64_t sb_frextents; /* free realtime extents */
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/*
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* End contiguous fields.
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*/
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xfs_ino_t sb_uquotino; /* user quota inode */
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xfs_ino_t sb_gquotino; /* group quota inode */
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__uint16_t sb_qflags; /* quota flags */
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__uint8_t sb_flags; /* misc. flags */
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__uint8_t sb_shared_vn; /* shared version number */
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xfs_extlen_t sb_inoalignmt; /* inode chunk alignment, fsblocks */
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__uint32_t sb_unit; /* stripe or raid unit */
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__uint32_t sb_width; /* stripe or raid width */
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__uint8_t sb_dirblklog; /* log2 of dir block size (fsbs) */
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__uint8_t sb_logsectlog; /* log2 of the log sector size */
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__uint16_t sb_logsectsize; /* sector size for the log, bytes */
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__uint32_t sb_logsunit; /* stripe unit size for the log */
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__uint32_t sb_features2; /* additional feature bits */
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} xfs_sb_t;
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/*
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* Sequence number values for the fields.
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*/
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typedef enum {
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XFS_SBS_MAGICNUM, XFS_SBS_BLOCKSIZE, XFS_SBS_DBLOCKS, XFS_SBS_RBLOCKS,
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XFS_SBS_REXTENTS, XFS_SBS_UUID, XFS_SBS_LOGSTART, XFS_SBS_ROOTINO,
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XFS_SBS_RBMINO, XFS_SBS_RSUMINO, XFS_SBS_REXTSIZE, XFS_SBS_AGBLOCKS,
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XFS_SBS_AGCOUNT, XFS_SBS_RBMBLOCKS, XFS_SBS_LOGBLOCKS,
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XFS_SBS_VERSIONNUM, XFS_SBS_SECTSIZE, XFS_SBS_INODESIZE,
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XFS_SBS_INOPBLOCK, XFS_SBS_FNAME, XFS_SBS_BLOCKLOG,
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XFS_SBS_SECTLOG, XFS_SBS_INODELOG, XFS_SBS_INOPBLOG, XFS_SBS_AGBLKLOG,
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XFS_SBS_REXTSLOG, XFS_SBS_INPROGRESS, XFS_SBS_IMAX_PCT, XFS_SBS_ICOUNT,
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XFS_SBS_IFREE, XFS_SBS_FDBLOCKS, XFS_SBS_FREXTENTS, XFS_SBS_UQUOTINO,
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XFS_SBS_GQUOTINO, XFS_SBS_QFLAGS, XFS_SBS_FLAGS, XFS_SBS_SHARED_VN,
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XFS_SBS_INOALIGNMT, XFS_SBS_UNIT, XFS_SBS_WIDTH, XFS_SBS_DIRBLKLOG,
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XFS_SBS_LOGSECTLOG, XFS_SBS_LOGSECTSIZE, XFS_SBS_LOGSUNIT,
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XFS_SBS_FEATURES2,
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XFS_SBS_FIELDCOUNT
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} xfs_sb_field_t;
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/*
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* Mask values, defined based on the xfs_sb_field_t values.
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* Only define the ones we're using.
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*/
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#define XFS_SB_MVAL(x) (1LL << XFS_SBS_ ## x)
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#define XFS_SB_UUID XFS_SB_MVAL(UUID)
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#define XFS_SB_FNAME XFS_SB_MVAL(FNAME)
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#define XFS_SB_ROOTINO XFS_SB_MVAL(ROOTINO)
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#define XFS_SB_RBMINO XFS_SB_MVAL(RBMINO)
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#define XFS_SB_RSUMINO XFS_SB_MVAL(RSUMINO)
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#define XFS_SB_VERSIONNUM XFS_SB_MVAL(VERSIONNUM)
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#define XFS_SB_UQUOTINO XFS_SB_MVAL(UQUOTINO)
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#define XFS_SB_GQUOTINO XFS_SB_MVAL(GQUOTINO)
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#define XFS_SB_QFLAGS XFS_SB_MVAL(QFLAGS)
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#define XFS_SB_SHARED_VN XFS_SB_MVAL(SHARED_VN)
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#define XFS_SB_UNIT XFS_SB_MVAL(UNIT)
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#define XFS_SB_WIDTH XFS_SB_MVAL(WIDTH)
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#define XFS_SB_FEATURES2 XFS_SB_MVAL(FEATURES2)
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#define XFS_SB_NUM_BITS ((int)XFS_SBS_FIELDCOUNT)
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#define XFS_SB_ALL_BITS ((1LL << XFS_SB_NUM_BITS) - 1)
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#define XFS_SB_MOD_BITS \
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(XFS_SB_UUID | XFS_SB_ROOTINO | XFS_SB_RBMINO | XFS_SB_RSUMINO | \
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XFS_SB_VERSIONNUM | XFS_SB_UQUOTINO | XFS_SB_GQUOTINO | \
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XFS_SB_QFLAGS | XFS_SB_SHARED_VN | XFS_SB_UNIT | XFS_SB_WIDTH | \
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XFS_SB_FEATURES2)
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/*
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* Misc. Flags - warning - these will be cleared by xfs_repair unless
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* a feature bit is set when the flag is used.
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*/
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#define XFS_SBF_NOFLAGS 0x00 /* no flags set */
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#define XFS_SBF_READONLY 0x01 /* only read-only mounts allowed */
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/*
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* define max. shared version we can interoperate with
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*/
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#define XFS_SB_MAX_SHARED_VN 0
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#define XFS_SB_VERSION_NUM(sbp) ((sbp)->sb_versionnum & XFS_SB_VERSION_NUMBITS)
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#define XFS_SB_GOOD_VERSION(sbp) xfs_sb_good_version(sbp)
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#ifdef __KERNEL__
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static inline int xfs_sb_good_version(xfs_sb_t *sbp)
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{
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return (((sbp->sb_versionnum >= XFS_SB_VERSION_1) && \
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(sbp->sb_versionnum <= XFS_SB_VERSION_3)) || \
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((XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \
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!((sbp->sb_versionnum & ~XFS_SB_VERSION_OKREALBITS) || \
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((sbp->sb_versionnum & XFS_SB_VERSION_MOREBITSBIT) && \
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(sbp->sb_features2 & ~XFS_SB_VERSION2_OKREALBITS))) && \
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(sbp->sb_shared_vn <= XFS_SB_MAX_SHARED_VN)));
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}
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#else
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static inline int xfs_sb_good_version(xfs_sb_t *sbp)
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{
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return (((sbp->sb_versionnum >= XFS_SB_VERSION_1) && \
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(sbp->sb_versionnum <= XFS_SB_VERSION_3)) || \
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((XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \
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!((sbp->sb_versionnum & ~XFS_SB_VERSION_OKREALBITS) || \
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((sbp->sb_versionnum & XFS_SB_VERSION_MOREBITSBIT) && \
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(sbp->sb_features2 & ~XFS_SB_VERSION2_OKREALBITS))) && \
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(!(sbp->sb_versionnum & XFS_SB_VERSION_SHAREDBIT) || \
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(sbp->sb_shared_vn <= XFS_SB_MAX_SHARED_VN))));
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}
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#endif /* __KERNEL__ */
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#define XFS_SB_GOOD_SASH_VERSION(sbp) \
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((((sbp)->sb_versionnum >= XFS_SB_VERSION_1) && \
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((sbp)->sb_versionnum <= XFS_SB_VERSION_3)) || \
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((XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \
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!((sbp)->sb_versionnum & ~XFS_SB_VERSION_OKSASHBITS)))
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#define XFS_SB_VERSION_TONEW(v) xfs_sb_version_tonew(v)
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static inline unsigned xfs_sb_version_tonew(unsigned v)
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{
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return ((((v) == XFS_SB_VERSION_1) ? \
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0 : \
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(((v) == XFS_SB_VERSION_2) ? \
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XFS_SB_VERSION_ATTRBIT : \
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(XFS_SB_VERSION_ATTRBIT | XFS_SB_VERSION_NLINKBIT))) | \
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XFS_SB_VERSION_4);
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}
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#define XFS_SB_VERSION_TOOLD(v) xfs_sb_version_toold(v)
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static inline unsigned xfs_sb_version_toold(unsigned v)
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{
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return (((v) & (XFS_SB_VERSION_QUOTABIT | XFS_SB_VERSION_ALIGNBIT)) ? \
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0 : \
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(((v) & XFS_SB_VERSION_NLINKBIT) ? \
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XFS_SB_VERSION_3 : \
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(((v) & XFS_SB_VERSION_ATTRBIT) ? \
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XFS_SB_VERSION_2 : \
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XFS_SB_VERSION_1)));
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}
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#define XFS_SB_VERSION_HASATTR(sbp) xfs_sb_version_hasattr(sbp)
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static inline int xfs_sb_version_hasattr(xfs_sb_t *sbp)
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{
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return ((sbp)->sb_versionnum == XFS_SB_VERSION_2) || \
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((sbp)->sb_versionnum == XFS_SB_VERSION_3) || \
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((XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \
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((sbp)->sb_versionnum & XFS_SB_VERSION_ATTRBIT));
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}
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#define XFS_SB_VERSION_ADDATTR(sbp) xfs_sb_version_addattr(sbp)
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static inline void xfs_sb_version_addattr(xfs_sb_t *sbp)
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{
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(sbp)->sb_versionnum = (((sbp)->sb_versionnum == XFS_SB_VERSION_1) ? \
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XFS_SB_VERSION_2 : \
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((XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) ? \
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((sbp)->sb_versionnum | XFS_SB_VERSION_ATTRBIT) : \
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(XFS_SB_VERSION_4 | XFS_SB_VERSION_ATTRBIT)));
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}
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#define XFS_SB_VERSION_HASNLINK(sbp) xfs_sb_version_hasnlink(sbp)
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static inline int xfs_sb_version_hasnlink(xfs_sb_t *sbp)
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{
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return ((sbp)->sb_versionnum == XFS_SB_VERSION_3) || \
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((XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \
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((sbp)->sb_versionnum & XFS_SB_VERSION_NLINKBIT));
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}
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#define XFS_SB_VERSION_ADDNLINK(sbp) xfs_sb_version_addnlink(sbp)
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static inline void xfs_sb_version_addnlink(xfs_sb_t *sbp)
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{
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(sbp)->sb_versionnum = ((sbp)->sb_versionnum <= XFS_SB_VERSION_2 ? \
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XFS_SB_VERSION_3 : \
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((sbp)->sb_versionnum | XFS_SB_VERSION_NLINKBIT));
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}
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#define XFS_SB_VERSION_HASQUOTA(sbp) xfs_sb_version_hasquota(sbp)
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static inline int xfs_sb_version_hasquota(xfs_sb_t *sbp)
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{
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return (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \
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((sbp)->sb_versionnum & XFS_SB_VERSION_QUOTABIT);
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}
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#define XFS_SB_VERSION_ADDQUOTA(sbp) xfs_sb_version_addquota(sbp)
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static inline void xfs_sb_version_addquota(xfs_sb_t *sbp)
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{
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(sbp)->sb_versionnum = \
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(XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4 ? \
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((sbp)->sb_versionnum | XFS_SB_VERSION_QUOTABIT) : \
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(XFS_SB_VERSION_TONEW((sbp)->sb_versionnum) | \
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XFS_SB_VERSION_QUOTABIT));
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}
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#define XFS_SB_VERSION_HASALIGN(sbp) xfs_sb_version_hasalign(sbp)
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static inline int xfs_sb_version_hasalign(xfs_sb_t *sbp)
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{
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return (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \
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((sbp)->sb_versionnum & XFS_SB_VERSION_ALIGNBIT);
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}
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#define XFS_SB_VERSION_SUBALIGN(sbp) xfs_sb_version_subalign(sbp)
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static inline void xfs_sb_version_subalign(xfs_sb_t *sbp)
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{
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(sbp)->sb_versionnum = \
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XFS_SB_VERSION_TOOLD((sbp)->sb_versionnum & ~XFS_SB_VERSION_ALIGNBIT);
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}
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#define XFS_SB_VERSION_HASDALIGN(sbp) xfs_sb_version_hasdalign(sbp)
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static inline int xfs_sb_version_hasdalign(xfs_sb_t *sbp)
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{
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return (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \
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((sbp)->sb_versionnum & XFS_SB_VERSION_DALIGNBIT);
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}
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#define XFS_SB_VERSION_ADDDALIGN(sbp) xfs_sb_version_adddalign(sbp)
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static inline int xfs_sb_version_adddalign(xfs_sb_t *sbp)
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{
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return (sbp)->sb_versionnum = \
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((sbp)->sb_versionnum | XFS_SB_VERSION_DALIGNBIT);
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}
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#define XFS_SB_VERSION_HASSHARED(sbp) xfs_sb_version_hasshared(sbp)
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static inline int xfs_sb_version_hasshared(xfs_sb_t *sbp)
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{
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return (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \
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((sbp)->sb_versionnum & XFS_SB_VERSION_SHAREDBIT);
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}
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#define XFS_SB_VERSION_ADDSHARED(sbp) xfs_sb_version_addshared(sbp)
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static inline int xfs_sb_version_addshared(xfs_sb_t *sbp)
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{
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return (sbp)->sb_versionnum = \
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((sbp)->sb_versionnum | XFS_SB_VERSION_SHAREDBIT);
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}
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#define XFS_SB_VERSION_SUBSHARED(sbp) xfs_sb_version_subshared(sbp)
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static inline int xfs_sb_version_subshared(xfs_sb_t *sbp)
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{
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return (sbp)->sb_versionnum = \
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((sbp)->sb_versionnum & ~XFS_SB_VERSION_SHAREDBIT);
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}
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#define XFS_SB_VERSION_HASDIRV2(sbp) xfs_sb_version_hasdirv2(sbp)
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static inline int xfs_sb_version_hasdirv2(xfs_sb_t *sbp)
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{
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return (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \
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((sbp)->sb_versionnum & XFS_SB_VERSION_DIRV2BIT);
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}
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#define XFS_SB_VERSION_HASLOGV2(sbp) xfs_sb_version_haslogv2(sbp)
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static inline int xfs_sb_version_haslogv2(xfs_sb_t *sbp)
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{
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return (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \
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((sbp)->sb_versionnum & XFS_SB_VERSION_LOGV2BIT);
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}
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#define XFS_SB_VERSION_HASEXTFLGBIT(sbp) xfs_sb_version_hasextflgbit(sbp)
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static inline int xfs_sb_version_hasextflgbit(xfs_sb_t *sbp)
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{
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return (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \
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((sbp)->sb_versionnum & XFS_SB_VERSION_EXTFLGBIT);
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}
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#define XFS_SB_VERSION_ADDEXTFLGBIT(sbp) xfs_sb_version_addextflgbit(sbp)
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static inline int xfs_sb_version_addextflgbit(xfs_sb_t *sbp)
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{
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return (sbp)->sb_versionnum = \
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((sbp)->sb_versionnum | XFS_SB_VERSION_EXTFLGBIT);
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}
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#define XFS_SB_VERSION_SUBEXTFLGBIT(sbp) xfs_sb_version_subextflgbit(sbp)
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static inline int xfs_sb_version_subextflgbit(xfs_sb_t *sbp)
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{
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return (sbp)->sb_versionnum = \
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((sbp)->sb_versionnum & ~XFS_SB_VERSION_EXTFLGBIT);
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}
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#define XFS_SB_VERSION_HASSECTOR(sbp) xfs_sb_version_hassector(sbp)
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static inline int xfs_sb_version_hassector(xfs_sb_t *sbp)
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{
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return (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \
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((sbp)->sb_versionnum & XFS_SB_VERSION_SECTORBIT);
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}
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#define XFS_SB_VERSION_HASMOREBITS(sbp) xfs_sb_version_hasmorebits(sbp)
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static inline int xfs_sb_version_hasmorebits(xfs_sb_t *sbp)
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{
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return (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4) && \
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((sbp)->sb_versionnum & XFS_SB_VERSION_MOREBITSBIT);
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}
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/*
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* sb_features2 bit version macros.
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*
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* For example, for a bit defined as XFS_SB_VERSION2_FUNBIT, has a macro:
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*
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* SB_VERSION_HASFUNBIT(xfs_sb_t *sbp)
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* ((XFS_SB_VERSION_HASMOREBITS(sbp) &&
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* ((sbp)->sb_features2 & XFS_SB_VERSION2_FUNBIT)
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*/
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#define XFS_SB_VERSION_HASATTR2(sbp) xfs_sb_version_hasattr2(sbp)
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static inline int xfs_sb_version_hasattr2(xfs_sb_t *sbp)
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{
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return (XFS_SB_VERSION_HASMOREBITS(sbp)) && \
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((sbp)->sb_features2 & XFS_SB_VERSION2_ATTR2BIT);
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}
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#define XFS_SB_VERSION_ADDATTR2(sbp) xfs_sb_version_addattr2(sbp)
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static inline void xfs_sb_version_addattr2(xfs_sb_t *sbp)
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{
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((sbp)->sb_versionnum = \
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((sbp)->sb_versionnum | XFS_SB_VERSION_MOREBITSBIT), \
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((sbp)->sb_features2 = \
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((sbp)->sb_features2 | XFS_SB_VERSION2_ATTR2BIT)));
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}
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/*
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* end of superblock version macros
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*/
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#define XFS_SB_DADDR ((xfs_daddr_t)0) /* daddr in filesystem/ag */
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#define XFS_SB_BLOCK(mp) XFS_HDR_BLOCK(mp, XFS_SB_DADDR)
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#define XFS_BUF_TO_SBP(bp) ((xfs_sb_t *)XFS_BUF_PTR(bp))
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#define XFS_HDR_BLOCK(mp,d) ((xfs_agblock_t)XFS_BB_TO_FSBT(mp,d))
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#define XFS_DADDR_TO_FSB(mp,d) XFS_AGB_TO_FSB(mp, \
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XFS_DADDR_TO_AGNO(mp,d), XFS_DADDR_TO_AGBNO(mp,d))
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#define XFS_FSB_TO_DADDR(mp,fsbno) XFS_AGB_TO_DADDR(mp, \
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XFS_FSB_TO_AGNO(mp,fsbno), XFS_FSB_TO_AGBNO(mp,fsbno))
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/*
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* File system sector to basic block conversions.
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*/
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#define XFS_FSS_TO_BB(mp,sec) ((sec) << (mp)->m_sectbb_log)
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#define XFS_BB_TO_FSS(mp,bb) \
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(((bb) + (XFS_FSS_TO_BB(mp,1) - 1)) >> (mp)->m_sectbb_log)
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#define XFS_BB_TO_FSST(mp,bb) ((bb) >> (mp)->m_sectbb_log)
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/*
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* File system sector to byte conversions.
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*/
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#define XFS_FSS_TO_B(mp,sectno) ((xfs_fsize_t)(sectno) << (mp)->m_sb.sb_sectlog)
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#define XFS_B_TO_FSST(mp,b) (((__uint64_t)(b)) >> (mp)->m_sb.sb_sectlog)
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/*
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* File system block to basic block conversions.
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*/
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#define XFS_FSB_TO_BB(mp,fsbno) ((fsbno) << (mp)->m_blkbb_log)
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#define XFS_BB_TO_FSB(mp,bb) \
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(((bb) + (XFS_FSB_TO_BB(mp,1) - 1)) >> (mp)->m_blkbb_log)
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#define XFS_BB_TO_FSBT(mp,bb) ((bb) >> (mp)->m_blkbb_log)
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#define XFS_BB_FSB_OFFSET(mp,bb) ((bb) & ((mp)->m_bsize - 1))
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/*
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* File system block to byte conversions.
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*/
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#define XFS_FSB_TO_B(mp,fsbno) ((xfs_fsize_t)(fsbno) << (mp)->m_sb.sb_blocklog)
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#define XFS_B_TO_FSB(mp,b) \
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((((__uint64_t)(b)) + (mp)->m_blockmask) >> (mp)->m_sb.sb_blocklog)
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#define XFS_B_TO_FSBT(mp,b) (((__uint64_t)(b)) >> (mp)->m_sb.sb_blocklog)
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#define XFS_B_FSB_OFFSET(mp,b) ((b) & (mp)->m_blockmask)
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#endif /* __XFS_SB_H__ */
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