694 lines
20 KiB
C
694 lines
20 KiB
C
/*
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* Copyright (c) 2000,2002-2004 Silicon Graphics, Inc. All Rights Reserved.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of version 2 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, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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*
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* Further, this software is distributed without any warranty that it is
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* free of the rightful claim of any third person regarding infringement
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* or the like. Any license provided herein, whether implied or
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* otherwise, applies only to this software file. Patent licenses, if
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* any, provided herein do not apply to combinations of this program with
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* other software, or any other product whatsoever.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write the Free Software Foundation, Inc., 59
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* Temple Place - Suite 330, Boston MA 02111-1307, USA.
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*
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* Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
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* Mountain View, CA 94043, or:
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*
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* http://www.sgi.com
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*
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* For further information regarding this notice, see:
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*
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* http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
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*/
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#ifndef __XFS_BMAP_BTREE_H__
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#define __XFS_BMAP_BTREE_H__
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#define XFS_BMAP_MAGIC 0x424d4150 /* 'BMAP' */
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struct xfs_btree_cur;
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struct xfs_btree_lblock;
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struct xfs_mount;
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struct xfs_inode;
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/*
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* Bmap root header, on-disk form only.
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*/
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typedef struct xfs_bmdr_block
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{
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__uint16_t bb_level; /* 0 is a leaf */
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__uint16_t bb_numrecs; /* current # of data records */
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} xfs_bmdr_block_t;
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/*
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* Bmap btree record and extent descriptor.
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* For 32-bit kernels,
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* l0:31 is an extent flag (value 1 indicates non-normal).
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* l0:0-30 and l1:9-31 are startoff.
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* l1:0-8, l2:0-31, and l3:21-31 are startblock.
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* l3:0-20 are blockcount.
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* For 64-bit kernels,
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* l0:63 is an extent flag (value 1 indicates non-normal).
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* l0:9-62 are startoff.
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* l0:0-8 and l1:21-63 are startblock.
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* l1:0-20 are blockcount.
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*/
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#if __BYTE_ORDER == __LITTLE_ENDIAN
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#define BMBT_TOTAL_BITLEN 128 /* 128 bits, 16 bytes */
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#define BMBT_EXNTFLAG_BITOFF 0
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#define BMBT_EXNTFLAG_BITLEN 1
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#define BMBT_STARTOFF_BITOFF (BMBT_EXNTFLAG_BITOFF + BMBT_EXNTFLAG_BITLEN)
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#define BMBT_STARTOFF_BITLEN 54
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#define BMBT_STARTBLOCK_BITOFF (BMBT_STARTOFF_BITOFF + BMBT_STARTOFF_BITLEN)
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#define BMBT_STARTBLOCK_BITLEN 52
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#define BMBT_BLOCKCOUNT_BITOFF \
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(BMBT_STARTBLOCK_BITOFF + BMBT_STARTBLOCK_BITLEN)
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#define BMBT_BLOCKCOUNT_BITLEN (BMBT_TOTAL_BITLEN - BMBT_BLOCKCOUNT_BITOFF)
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#else
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#define BMBT_TOTAL_BITLEN 128 /* 128 bits, 16 bytes */
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#define BMBT_EXNTFLAG_BITOFF 63
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#define BMBT_EXNTFLAG_BITLEN 1
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#define BMBT_STARTOFF_BITOFF (BMBT_EXNTFLAG_BITOFF - BMBT_STARTOFF_BITLEN)
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#define BMBT_STARTOFF_BITLEN 54
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#define BMBT_STARTBLOCK_BITOFF 85 /* 128 - 43 (other 9 is in first word) */
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#define BMBT_STARTBLOCK_BITLEN 52
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#define BMBT_BLOCKCOUNT_BITOFF 64 /* Start of second 64 bit container */
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#define BMBT_BLOCKCOUNT_BITLEN 21
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#endif
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#define BMBT_USE_64 1
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typedef struct xfs_bmbt_rec_32
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{
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__uint32_t l0, l1, l2, l3;
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} xfs_bmbt_rec_32_t;
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typedef struct xfs_bmbt_rec_64
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{
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__uint64_t l0, l1;
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} xfs_bmbt_rec_64_t;
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typedef __uint64_t xfs_bmbt_rec_base_t; /* use this for casts */
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typedef xfs_bmbt_rec_64_t xfs_bmbt_rec_t, xfs_bmdr_rec_t;
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/*
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* Values and macros for delayed-allocation startblock fields.
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*/
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#define STARTBLOCKVALBITS 17
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#define STARTBLOCKMASKBITS (15 + XFS_BIG_BLKNOS * 20)
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#define DSTARTBLOCKMASKBITS (15 + 20)
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#define STARTBLOCKMASK \
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(((((xfs_fsblock_t)1) << STARTBLOCKMASKBITS) - 1) << STARTBLOCKVALBITS)
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#define DSTARTBLOCKMASK \
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(((((xfs_dfsbno_t)1) << DSTARTBLOCKMASKBITS) - 1) << STARTBLOCKVALBITS)
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#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_ISNULLSTARTBLOCK)
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int isnullstartblock(xfs_fsblock_t x);
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#define ISNULLSTARTBLOCK(x) isnullstartblock(x)
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#else
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#define ISNULLSTARTBLOCK(x) (((x) & STARTBLOCKMASK) == STARTBLOCKMASK)
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#endif
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#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_ISNULLDSTARTBLOCK)
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int isnulldstartblock(xfs_dfsbno_t x);
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#define ISNULLDSTARTBLOCK(x) isnulldstartblock(x)
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#else
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#define ISNULLDSTARTBLOCK(x) (((x) & DSTARTBLOCKMASK) == DSTARTBLOCKMASK)
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#endif
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#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_NULLSTARTBLOCK)
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xfs_fsblock_t nullstartblock(int k);
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#define NULLSTARTBLOCK(k) nullstartblock(k)
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#else
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#define NULLSTARTBLOCK(k) \
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((ASSERT(k < (1 << STARTBLOCKVALBITS))), (STARTBLOCKMASK | (k)))
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#endif
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#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_STARTBLOCKVAL)
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xfs_filblks_t startblockval(xfs_fsblock_t x);
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#define STARTBLOCKVAL(x) startblockval(x)
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#else
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#define STARTBLOCKVAL(x) ((xfs_filblks_t)((x) & ~STARTBLOCKMASK))
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#endif
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/*
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* Possible extent formats.
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*/
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typedef enum {
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XFS_EXTFMT_NOSTATE = 0,
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XFS_EXTFMT_HASSTATE
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} xfs_exntfmt_t;
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/*
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* Possible extent states.
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*/
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typedef enum {
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XFS_EXT_NORM, XFS_EXT_UNWRITTEN,
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XFS_EXT_DMAPI_OFFLINE, XFS_EXT_INVALID
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} xfs_exntst_t;
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/*
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* Extent state and extent format macros.
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*/
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#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_EXTFMT_INODE )
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xfs_exntfmt_t xfs_extfmt_inode(struct xfs_inode *ip);
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#define XFS_EXTFMT_INODE(x) xfs_extfmt_inode(x)
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#else
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#define XFS_EXTFMT_INODE(x) \
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(XFS_SB_VERSION_HASEXTFLGBIT(&((x)->i_mount->m_sb)) ? \
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XFS_EXTFMT_HASSTATE : XFS_EXTFMT_NOSTATE)
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#endif
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#define ISUNWRITTEN(x) ((x)->br_state == XFS_EXT_UNWRITTEN)
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/*
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* Incore version of above.
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*/
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typedef struct xfs_bmbt_irec
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{
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xfs_fileoff_t br_startoff; /* starting file offset */
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xfs_fsblock_t br_startblock; /* starting block number */
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xfs_filblks_t br_blockcount; /* number of blocks */
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xfs_exntst_t br_state; /* extent state */
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} xfs_bmbt_irec_t;
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/*
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* Key structure for non-leaf levels of the tree.
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*/
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typedef struct xfs_bmbt_key
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{
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xfs_dfiloff_t br_startoff; /* starting file offset */
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} xfs_bmbt_key_t, xfs_bmdr_key_t;
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typedef xfs_dfsbno_t xfs_bmbt_ptr_t, xfs_bmdr_ptr_t; /* btree pointer type */
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/* btree block header type */
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typedef struct xfs_btree_lblock xfs_bmbt_block_t;
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#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_BUF_TO_BMBT_BLOCK)
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xfs_bmbt_block_t *xfs_buf_to_bmbt_block(struct xfs_buf *bp);
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#define XFS_BUF_TO_BMBT_BLOCK(bp) xfs_buf_to_bmbt_block(bp)
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#else
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#define XFS_BUF_TO_BMBT_BLOCK(bp) ((xfs_bmbt_block_t *)(XFS_BUF_PTR(bp)))
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#endif
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#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_BMAP_RBLOCK_DSIZE)
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int xfs_bmap_rblock_dsize(int lev, struct xfs_btree_cur *cur);
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#define XFS_BMAP_RBLOCK_DSIZE(lev,cur) xfs_bmap_rblock_dsize(lev,cur)
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#else
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#define XFS_BMAP_RBLOCK_DSIZE(lev,cur) ((cur)->bc_private.b.forksize)
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#endif
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#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_BMAP_RBLOCK_ISIZE)
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int xfs_bmap_rblock_isize(int lev, struct xfs_btree_cur *cur);
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#define XFS_BMAP_RBLOCK_ISIZE(lev,cur) xfs_bmap_rblock_isize(lev,cur)
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#else
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#define XFS_BMAP_RBLOCK_ISIZE(lev,cur) \
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((int)XFS_IFORK_PTR((cur)->bc_private.b.ip, \
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(cur)->bc_private.b.whichfork)->if_broot_bytes)
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#endif
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#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_BMAP_IBLOCK_SIZE)
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int xfs_bmap_iblock_size(int lev, struct xfs_btree_cur *cur);
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#define XFS_BMAP_IBLOCK_SIZE(lev,cur) xfs_bmap_iblock_size(lev,cur)
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#else
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#define XFS_BMAP_IBLOCK_SIZE(lev,cur) (1 << (cur)->bc_blocklog)
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#endif
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#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_BMAP_BLOCK_DSIZE)
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int xfs_bmap_block_dsize(int lev, struct xfs_btree_cur *cur);
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#define XFS_BMAP_BLOCK_DSIZE(lev,cur) xfs_bmap_block_dsize(lev,cur)
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#else
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#define XFS_BMAP_BLOCK_DSIZE(lev,cur) \
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((lev) == (cur)->bc_nlevels - 1 ? \
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XFS_BMAP_RBLOCK_DSIZE(lev,cur) : \
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XFS_BMAP_IBLOCK_SIZE(lev,cur))
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#endif
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#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_BMAP_BLOCK_ISIZE)
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int xfs_bmap_block_isize(int lev, struct xfs_btree_cur *cur);
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#define XFS_BMAP_BLOCK_ISIZE(lev,cur) xfs_bmap_block_isize(lev,cur)
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#else
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#define XFS_BMAP_BLOCK_ISIZE(lev,cur) \
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((lev) == (cur)->bc_nlevels - 1 ? \
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XFS_BMAP_RBLOCK_ISIZE(lev,cur) : \
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XFS_BMAP_IBLOCK_SIZE(lev,cur))
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#endif
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#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_BMAP_BLOCK_DMAXRECS)
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int xfs_bmap_block_dmaxrecs(int lev, struct xfs_btree_cur *cur);
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#define XFS_BMAP_BLOCK_DMAXRECS(lev,cur) xfs_bmap_block_dmaxrecs(lev,cur)
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#else
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#define XFS_BMAP_BLOCK_DMAXRECS(lev,cur) \
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((lev) == (cur)->bc_nlevels - 1 ? \
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XFS_BTREE_BLOCK_MAXRECS(XFS_BMAP_RBLOCK_DSIZE(lev,cur), \
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xfs_bmdr, (lev) == 0) : \
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((cur)->bc_mp->m_bmap_dmxr[(lev) != 0]))
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#endif
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#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_BMAP_BLOCK_IMAXRECS)
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int xfs_bmap_block_imaxrecs(int lev, struct xfs_btree_cur *cur);
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#define XFS_BMAP_BLOCK_IMAXRECS(lev,cur) xfs_bmap_block_imaxrecs(lev,cur)
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#else
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#define XFS_BMAP_BLOCK_IMAXRECS(lev,cur) \
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((lev) == (cur)->bc_nlevels - 1 ? \
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XFS_BTREE_BLOCK_MAXRECS(XFS_BMAP_RBLOCK_ISIZE(lev,cur), \
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xfs_bmbt, (lev) == 0) : \
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((cur)->bc_mp->m_bmap_dmxr[(lev) != 0]))
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#endif
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#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_BMAP_BLOCK_DMINRECS)
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int xfs_bmap_block_dminrecs(int lev, struct xfs_btree_cur *cur);
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#define XFS_BMAP_BLOCK_DMINRECS(lev,cur) xfs_bmap_block_dminrecs(lev,cur)
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#else
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#define XFS_BMAP_BLOCK_DMINRECS(lev,cur) \
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((lev) == (cur)->bc_nlevels - 1 ? \
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XFS_BTREE_BLOCK_MINRECS(XFS_BMAP_RBLOCK_DSIZE(lev,cur), \
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xfs_bmdr, (lev) == 0) : \
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((cur)->bc_mp->m_bmap_dmnr[(lev) != 0]))
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#endif
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#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_BMAP_BLOCK_IMINRECS)
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int xfs_bmap_block_iminrecs(int lev, struct xfs_btree_cur *cur);
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#define XFS_BMAP_BLOCK_IMINRECS(lev,cur) xfs_bmap_block_iminrecs(lev,cur)
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#else
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#define XFS_BMAP_BLOCK_IMINRECS(lev,cur) \
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((lev) == (cur)->bc_nlevels - 1 ? \
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XFS_BTREE_BLOCK_MINRECS(XFS_BMAP_RBLOCK_ISIZE(lev,cur), \
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xfs_bmbt, (lev) == 0) : \
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((cur)->bc_mp->m_bmap_dmnr[(lev) != 0]))
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#endif
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#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_BMAP_REC_DADDR)
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xfs_bmbt_rec_t *
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xfs_bmap_rec_daddr(xfs_bmbt_block_t *bb, int i, struct xfs_btree_cur *cur);
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#define XFS_BMAP_REC_DADDR(bb,i,cur) xfs_bmap_rec_daddr(bb,i,cur)
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#else
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#define XFS_BMAP_REC_DADDR(bb,i,cur) \
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XFS_BTREE_REC_ADDR(XFS_BMAP_BLOCK_DSIZE( \
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INT_GET((bb)->bb_level, ARCH_CONVERT), cur), \
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xfs_bmbt, bb, i, XFS_BMAP_BLOCK_DMAXRECS( \
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INT_GET((bb)->bb_level, ARCH_CONVERT), cur))
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#endif
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#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_BMAP_REC_IADDR)
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xfs_bmbt_rec_t *
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xfs_bmap_rec_iaddr(xfs_bmbt_block_t *bb, int i, struct xfs_btree_cur *cur);
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#define XFS_BMAP_REC_IADDR(bb,i,cur) xfs_bmap_rec_iaddr(bb,i,cur)
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#else
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#define XFS_BMAP_REC_IADDR(bb,i,cur) \
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XFS_BTREE_REC_ADDR(XFS_BMAP_BLOCK_ISIZE( \
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INT_GET((bb)->bb_level, ARCH_CONVERT), cur), \
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xfs_bmbt, bb, i, XFS_BMAP_BLOCK_IMAXRECS( \
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INT_GET((bb)->bb_level, ARCH_CONVERT), cur))
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#endif
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#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_BMAP_KEY_DADDR)
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xfs_bmbt_key_t *
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xfs_bmap_key_daddr(xfs_bmbt_block_t *bb, int i, struct xfs_btree_cur *cur);
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#define XFS_BMAP_KEY_DADDR(bb,i,cur) xfs_bmap_key_daddr(bb,i,cur)
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#else
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#define XFS_BMAP_KEY_DADDR(bb,i,cur) \
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XFS_BTREE_KEY_ADDR(XFS_BMAP_BLOCK_DSIZE( \
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INT_GET((bb)->bb_level, ARCH_CONVERT), cur), \
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xfs_bmbt, bb, i, XFS_BMAP_BLOCK_DMAXRECS( \
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INT_GET((bb)->bb_level, ARCH_CONVERT), cur))
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#endif
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#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_BMAP_KEY_IADDR)
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xfs_bmbt_key_t *
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xfs_bmap_key_iaddr(xfs_bmbt_block_t *bb, int i, struct xfs_btree_cur *cur);
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#define XFS_BMAP_KEY_IADDR(bb,i,cur) xfs_bmap_key_iaddr(bb,i,cur)
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#else
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#define XFS_BMAP_KEY_IADDR(bb,i,cur) \
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XFS_BTREE_KEY_ADDR(XFS_BMAP_BLOCK_ISIZE( \
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INT_GET((bb)->bb_level, ARCH_CONVERT), cur), \
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xfs_bmbt, bb, i, XFS_BMAP_BLOCK_IMAXRECS( \
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INT_GET((bb)->bb_level, ARCH_CONVERT), cur))
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#endif
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#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_BMAP_PTR_DADDR)
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xfs_bmbt_ptr_t *
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xfs_bmap_ptr_daddr(xfs_bmbt_block_t *bb, int i, struct xfs_btree_cur *cur);
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#define XFS_BMAP_PTR_DADDR(bb,i,cur) xfs_bmap_ptr_daddr(bb,i,cur)
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#else
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#define XFS_BMAP_PTR_DADDR(bb,i,cur) \
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XFS_BTREE_PTR_ADDR(XFS_BMAP_BLOCK_DSIZE( \
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INT_GET((bb)->bb_level, ARCH_CONVERT), cur), \
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xfs_bmbt, bb, i, XFS_BMAP_BLOCK_DMAXRECS( \
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INT_GET((bb)->bb_level, ARCH_CONVERT), cur))
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#endif
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#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_BMAP_PTR_IADDR)
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xfs_bmbt_ptr_t *
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xfs_bmap_ptr_iaddr(xfs_bmbt_block_t *bb, int i, struct xfs_btree_cur *cur);
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#define XFS_BMAP_PTR_IADDR(bb,i,cur) xfs_bmap_ptr_iaddr(bb,i,cur)
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#else
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#define XFS_BMAP_PTR_IADDR(bb,i,cur) \
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XFS_BTREE_PTR_ADDR(XFS_BMAP_BLOCK_ISIZE( \
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INT_GET((bb)->bb_level, ARCH_CONVERT), cur), \
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xfs_bmbt, bb, i, XFS_BMAP_BLOCK_IMAXRECS( \
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INT_GET((bb)->bb_level, ARCH_CONVERT), cur))
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#endif
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/*
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* These are to be used when we know the size of the block and
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* we don't have a cursor.
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*/
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#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_BMAP_BROOT_REC_ADDR)
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xfs_bmbt_rec_t *xfs_bmap_broot_rec_addr(xfs_bmbt_block_t *bb, int i, int sz);
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#define XFS_BMAP_BROOT_REC_ADDR(bb,i,sz) xfs_bmap_broot_rec_addr(bb,i,sz)
|
|
#else
|
|
#define XFS_BMAP_BROOT_REC_ADDR(bb,i,sz) \
|
|
XFS_BTREE_REC_ADDR(sz,xfs_bmbt,bb,i,XFS_BMAP_BROOT_MAXRECS(sz))
|
|
#endif
|
|
#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_BMAP_BROOT_KEY_ADDR)
|
|
xfs_bmbt_key_t *xfs_bmap_broot_key_addr(xfs_bmbt_block_t *bb, int i, int sz);
|
|
#define XFS_BMAP_BROOT_KEY_ADDR(bb,i,sz) xfs_bmap_broot_key_addr(bb,i,sz)
|
|
#else
|
|
#define XFS_BMAP_BROOT_KEY_ADDR(bb,i,sz) \
|
|
XFS_BTREE_KEY_ADDR(sz,xfs_bmbt,bb,i,XFS_BMAP_BROOT_MAXRECS(sz))
|
|
#endif
|
|
#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_BMAP_BROOT_PTR_ADDR)
|
|
xfs_bmbt_ptr_t *xfs_bmap_broot_ptr_addr(xfs_bmbt_block_t *bb, int i, int sz);
|
|
#define XFS_BMAP_BROOT_PTR_ADDR(bb,i,sz) xfs_bmap_broot_ptr_addr(bb,i,sz)
|
|
#else
|
|
#define XFS_BMAP_BROOT_PTR_ADDR(bb,i,sz) \
|
|
XFS_BTREE_PTR_ADDR(sz,xfs_bmbt,bb,i,XFS_BMAP_BROOT_MAXRECS(sz))
|
|
#endif
|
|
|
|
#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_BMAP_BROOT_NUMRECS)
|
|
int xfs_bmap_broot_numrecs(xfs_bmdr_block_t *bb);
|
|
#define XFS_BMAP_BROOT_NUMRECS(bb) xfs_bmap_broot_numrecs(bb)
|
|
#else
|
|
#define XFS_BMAP_BROOT_NUMRECS(bb) (INT_GET((bb)->bb_numrecs, ARCH_CONVERT))
|
|
#endif
|
|
#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_BMAP_BROOT_MAXRECS)
|
|
int xfs_bmap_broot_maxrecs(int sz);
|
|
#define XFS_BMAP_BROOT_MAXRECS(sz) xfs_bmap_broot_maxrecs(sz)
|
|
#else
|
|
#define XFS_BMAP_BROOT_MAXRECS(sz) XFS_BTREE_BLOCK_MAXRECS(sz,xfs_bmbt,0)
|
|
#endif
|
|
#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_BMAP_BROOT_SPACE_CALC)
|
|
int xfs_bmap_broot_space_calc(int nrecs);
|
|
#define XFS_BMAP_BROOT_SPACE_CALC(nrecs) xfs_bmap_broot_space_calc(nrecs)
|
|
#else
|
|
#define XFS_BMAP_BROOT_SPACE_CALC(nrecs) \
|
|
((int)(sizeof(xfs_bmbt_block_t) + \
|
|
((nrecs) * (sizeof(xfs_bmbt_key_t) + sizeof(xfs_bmbt_ptr_t)))))
|
|
#endif
|
|
#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_BMAP_BROOT_SPACE)
|
|
int xfs_bmap_broot_space(xfs_bmdr_block_t *bb);
|
|
#define XFS_BMAP_BROOT_SPACE(bb) xfs_bmap_broot_space(bb)
|
|
#else
|
|
#define XFS_BMAP_BROOT_SPACE(bb) \
|
|
XFS_BMAP_BROOT_SPACE_CALC(INT_GET((bb)->bb_numrecs, ARCH_CONVERT))
|
|
#endif
|
|
#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_BMDR_SPACE_CALC)
|
|
int xfs_bmdr_space_calc(int nrecs);
|
|
#define XFS_BMDR_SPACE_CALC(nrecs) xfs_bmdr_space_calc(nrecs)
|
|
#else
|
|
#define XFS_BMDR_SPACE_CALC(nrecs) \
|
|
((int)(sizeof(xfs_bmdr_block_t) + \
|
|
((nrecs) * (sizeof(xfs_bmbt_key_t) + sizeof(xfs_bmbt_ptr_t)))))
|
|
#endif
|
|
|
|
/*
|
|
* Maximum number of bmap btree levels.
|
|
*/
|
|
#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_BM_MAXLEVELS)
|
|
int xfs_bm_maxlevels(struct xfs_mount *mp, int w);
|
|
#define XFS_BM_MAXLEVELS(mp,w) xfs_bm_maxlevels(mp,w)
|
|
#else
|
|
#define XFS_BM_MAXLEVELS(mp,w) ((mp)->m_bm_maxlevels[w])
|
|
#endif
|
|
|
|
#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_BMAP_SANITY_CHECK)
|
|
int xfs_bmap_sanity_check(struct xfs_mount *mp, xfs_bmbt_block_t *bb,
|
|
int level);
|
|
#define XFS_BMAP_SANITY_CHECK(mp,bb,level) \
|
|
xfs_bmap_sanity_check(mp,bb,level)
|
|
#else
|
|
#define XFS_BMAP_SANITY_CHECK(mp,bb,level) \
|
|
(INT_GET((bb)->bb_magic, ARCH_CONVERT) == XFS_BMAP_MAGIC && \
|
|
INT_GET((bb)->bb_level, ARCH_CONVERT) == level && \
|
|
INT_GET((bb)->bb_numrecs, ARCH_CONVERT) > 0 && \
|
|
INT_GET((bb)->bb_numrecs, ARCH_CONVERT) <= (mp)->m_bmap_dmxr[(level) != 0])
|
|
#endif
|
|
|
|
|
|
#ifdef __KERNEL__
|
|
|
|
#if defined(XFS_BMBT_TRACE)
|
|
/*
|
|
* Trace buffer entry types.
|
|
*/
|
|
#define XFS_BMBT_KTRACE_ARGBI 1
|
|
#define XFS_BMBT_KTRACE_ARGBII 2
|
|
#define XFS_BMBT_KTRACE_ARGFFFI 3
|
|
#define XFS_BMBT_KTRACE_ARGI 4
|
|
#define XFS_BMBT_KTRACE_ARGIFK 5
|
|
#define XFS_BMBT_KTRACE_ARGIFR 6
|
|
#define XFS_BMBT_KTRACE_ARGIK 7
|
|
#define XFS_BMBT_KTRACE_CUR 8
|
|
|
|
#define XFS_BMBT_TRACE_SIZE 4096 /* size of global trace buffer */
|
|
#define XFS_BMBT_KTRACE_SIZE 32 /* size of per-inode trace buffer */
|
|
extern ktrace_t *xfs_bmbt_trace_buf;
|
|
#endif
|
|
|
|
/*
|
|
* Prototypes for xfs_bmap.c to call.
|
|
*/
|
|
|
|
void
|
|
xfs_bmdr_to_bmbt(
|
|
xfs_bmdr_block_t *,
|
|
int,
|
|
xfs_bmbt_block_t *,
|
|
int);
|
|
|
|
int
|
|
xfs_bmbt_decrement(
|
|
struct xfs_btree_cur *,
|
|
int,
|
|
int *);
|
|
|
|
int
|
|
xfs_bmbt_delete(
|
|
struct xfs_btree_cur *,
|
|
int *);
|
|
|
|
void
|
|
xfs_bmbt_get_all(
|
|
xfs_bmbt_rec_t *r,
|
|
xfs_bmbt_irec_t *s);
|
|
|
|
xfs_bmbt_block_t *
|
|
xfs_bmbt_get_block(
|
|
struct xfs_btree_cur *cur,
|
|
int level,
|
|
struct xfs_buf **bpp);
|
|
|
|
xfs_filblks_t
|
|
xfs_bmbt_get_blockcount(
|
|
xfs_bmbt_rec_t *r);
|
|
|
|
xfs_fsblock_t
|
|
xfs_bmbt_get_startblock(
|
|
xfs_bmbt_rec_t *r);
|
|
|
|
xfs_fileoff_t
|
|
xfs_bmbt_get_startoff(
|
|
xfs_bmbt_rec_t *r);
|
|
|
|
xfs_exntst_t
|
|
xfs_bmbt_get_state(
|
|
xfs_bmbt_rec_t *r);
|
|
|
|
#if __BYTE_ORDER != __BIG_ENDIAN
|
|
void
|
|
xfs_bmbt_disk_get_all(
|
|
xfs_bmbt_rec_t *r,
|
|
xfs_bmbt_irec_t *s);
|
|
|
|
xfs_exntst_t
|
|
xfs_bmbt_disk_get_state(
|
|
xfs_bmbt_rec_t *r);
|
|
|
|
xfs_filblks_t
|
|
xfs_bmbt_disk_get_blockcount(
|
|
xfs_bmbt_rec_t *r);
|
|
|
|
xfs_fsblock_t
|
|
xfs_bmbt_disk_get_startblock(
|
|
xfs_bmbt_rec_t *r);
|
|
|
|
xfs_fileoff_t
|
|
xfs_bmbt_disk_get_startoff(
|
|
xfs_bmbt_rec_t *r);
|
|
|
|
#else
|
|
#define xfs_bmbt_disk_get_all(r, s) \
|
|
xfs_bmbt_get_all(r, s)
|
|
#define xfs_bmbt_disk_get_state(r) \
|
|
xfs_bmbt_get_state(r)
|
|
#define xfs_bmbt_disk_get_blockcount(r) \
|
|
xfs_bmbt_get_blockcount(r)
|
|
#define xfs_bmbt_disk_get_startblock(r) \
|
|
xfs_bmbt_get_blockcount(r)
|
|
#define xfs_bmbt_disk_get_startoff(r) \
|
|
xfs_bmbt_get_startoff(r)
|
|
#endif
|
|
|
|
int
|
|
xfs_bmbt_increment(
|
|
struct xfs_btree_cur *,
|
|
int,
|
|
int *);
|
|
|
|
int
|
|
xfs_bmbt_insert(
|
|
struct xfs_btree_cur *,
|
|
int *);
|
|
|
|
void
|
|
xfs_bmbt_log_block(
|
|
struct xfs_btree_cur *,
|
|
struct xfs_buf *,
|
|
int);
|
|
|
|
void
|
|
xfs_bmbt_log_recs(
|
|
struct xfs_btree_cur *,
|
|
struct xfs_buf *,
|
|
int,
|
|
int);
|
|
|
|
int
|
|
xfs_bmbt_lookup_eq(
|
|
struct xfs_btree_cur *,
|
|
xfs_fileoff_t,
|
|
xfs_fsblock_t,
|
|
xfs_filblks_t,
|
|
int *);
|
|
|
|
int
|
|
xfs_bmbt_lookup_ge(
|
|
struct xfs_btree_cur *,
|
|
xfs_fileoff_t,
|
|
xfs_fsblock_t,
|
|
xfs_filblks_t,
|
|
int *);
|
|
|
|
/*
|
|
* Give the bmap btree a new root block. Copy the old broot contents
|
|
* down into a real block and make the broot point to it.
|
|
*/
|
|
int /* error */
|
|
xfs_bmbt_newroot(
|
|
struct xfs_btree_cur *cur, /* btree cursor */
|
|
int *logflags, /* logging flags for inode */
|
|
int *stat); /* return status - 0 fail */
|
|
|
|
void
|
|
xfs_bmbt_set_all(
|
|
xfs_bmbt_rec_t *r,
|
|
xfs_bmbt_irec_t *s);
|
|
|
|
void
|
|
xfs_bmbt_set_allf(
|
|
xfs_bmbt_rec_t *r,
|
|
xfs_fileoff_t o,
|
|
xfs_fsblock_t b,
|
|
xfs_filblks_t c,
|
|
xfs_exntst_t v);
|
|
|
|
void
|
|
xfs_bmbt_set_blockcount(
|
|
xfs_bmbt_rec_t *r,
|
|
xfs_filblks_t v);
|
|
|
|
void
|
|
xfs_bmbt_set_startblock(
|
|
xfs_bmbt_rec_t *r,
|
|
xfs_fsblock_t v);
|
|
|
|
void
|
|
xfs_bmbt_set_startoff(
|
|
xfs_bmbt_rec_t *r,
|
|
xfs_fileoff_t v);
|
|
|
|
void
|
|
xfs_bmbt_set_state(
|
|
xfs_bmbt_rec_t *r,
|
|
xfs_exntst_t v);
|
|
|
|
#if __BYTE_ORDER != __BIG_ENDIAN
|
|
void
|
|
xfs_bmbt_disk_set_all(
|
|
xfs_bmbt_rec_t *r,
|
|
xfs_bmbt_irec_t *s);
|
|
|
|
void
|
|
xfs_bmbt_disk_set_allf(
|
|
xfs_bmbt_rec_t *r,
|
|
xfs_fileoff_t o,
|
|
xfs_fsblock_t b,
|
|
xfs_filblks_t c,
|
|
xfs_exntst_t v);
|
|
#else
|
|
#define xfs_bmbt_disk_set_all(r, s) \
|
|
xfs_bmbt_set_all(r, s)
|
|
#define xfs_bmbt_disk_set_allf(r, o, b, c, v) \
|
|
xfs_bmbt_set_allf(r, o, b, c, v)
|
|
#endif
|
|
|
|
void
|
|
xfs_bmbt_to_bmdr(
|
|
xfs_bmbt_block_t *,
|
|
int,
|
|
xfs_bmdr_block_t *,
|
|
int);
|
|
|
|
int
|
|
xfs_bmbt_update(
|
|
struct xfs_btree_cur *,
|
|
xfs_fileoff_t,
|
|
xfs_fsblock_t,
|
|
xfs_filblks_t,
|
|
xfs_exntst_t);
|
|
|
|
#ifdef DEBUG
|
|
/*
|
|
* Get the data from the pointed-to record.
|
|
*/
|
|
int
|
|
xfs_bmbt_get_rec(
|
|
struct xfs_btree_cur *,
|
|
xfs_fileoff_t *,
|
|
xfs_fsblock_t *,
|
|
xfs_filblks_t *,
|
|
xfs_exntst_t *,
|
|
int *);
|
|
#endif
|
|
|
|
|
|
/*
|
|
* Search an extent list for the extent which includes block
|
|
* bno.
|
|
*/
|
|
xfs_bmbt_rec_t *
|
|
xfs_bmap_do_search_extents(
|
|
xfs_bmbt_rec_t *,
|
|
xfs_extnum_t,
|
|
xfs_extnum_t,
|
|
xfs_fileoff_t,
|
|
int *,
|
|
xfs_extnum_t *,
|
|
xfs_bmbt_irec_t *,
|
|
xfs_bmbt_irec_t *);
|
|
|
|
#endif /* __KERNEL__ */
|
|
|
|
#endif /* __XFS_BMAP_BTREE_H__ */
|