2005-04-16 16:20:36 -06:00
|
|
|
/*
|
|
|
|
* Copyright (c) 2000-2003 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_INUM_H__
|
|
|
|
#define __XFS_INUM_H__
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Inode number format:
|
|
|
|
* low inopblog bits - offset in block
|
|
|
|
* next agblklog bits - block number in ag
|
|
|
|
* next agno_log bits - ag number
|
|
|
|
* high agno_log-agblklog-inopblog bits - 0
|
|
|
|
*/
|
|
|
|
|
|
|
|
typedef __uint32_t xfs_agino_t; /* within allocation grp inode number */
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Useful inode bits for this kernel.
|
|
|
|
* Used in some places where having 64-bits in the 32-bit kernels
|
|
|
|
* costs too much.
|
|
|
|
*/
|
|
|
|
#if XFS_BIG_INUMS
|
|
|
|
typedef xfs_ino_t xfs_intino_t;
|
|
|
|
#else
|
|
|
|
typedef __uint32_t xfs_intino_t;
|
|
|
|
#endif
|
|
|
|
|
|
|
|
#define NULLFSINO ((xfs_ino_t)-1)
|
|
|
|
#define NULLAGINO ((xfs_agino_t)-1)
|
|
|
|
|
|
|
|
struct xfs_mount;
|
|
|
|
|
2005-11-01 20:38:42 -07:00
|
|
|
#define XFS_INO_MASK(k) (__uint32_t)((1ULL << (k)) - 1)
|
|
|
|
#define XFS_INO_OFFSET_BITS(mp) (mp)->m_sb.sb_inopblog
|
|
|
|
#define XFS_INO_AGBNO_BITS(mp) (mp)->m_sb.sb_agblklog
|
|
|
|
#define XFS_INO_AGINO_BITS(mp) (mp)->m_agino_log
|
|
|
|
#define XFS_INO_AGNO_BITS(mp) (mp)->m_agno_log
|
|
|
|
#define XFS_INO_BITS(mp) \
|
|
|
|
XFS_INO_AGNO_BITS(mp) + XFS_INO_AGINO_BITS(mp)
|
|
|
|
#define XFS_INO_TO_AGNO(mp,i) \
|
2005-04-16 16:20:36 -06:00
|
|
|
((xfs_agnumber_t)((i) >> XFS_INO_AGINO_BITS(mp)))
|
2005-11-01 20:38:42 -07:00
|
|
|
#define XFS_INO_TO_AGINO(mp,i) \
|
2005-04-16 16:20:36 -06:00
|
|
|
((xfs_agino_t)(i) & XFS_INO_MASK(XFS_INO_AGINO_BITS(mp)))
|
2005-11-01 20:38:42 -07:00
|
|
|
#define XFS_INO_TO_AGBNO(mp,i) \
|
2005-04-16 16:20:36 -06:00
|
|
|
(((xfs_agblock_t)(i) >> XFS_INO_OFFSET_BITS(mp)) & \
|
2005-11-01 20:38:42 -07:00
|
|
|
XFS_INO_MASK(XFS_INO_AGBNO_BITS(mp)))
|
|
|
|
#define XFS_INO_TO_OFFSET(mp,i) \
|
2005-04-16 16:20:36 -06:00
|
|
|
((int)(i) & XFS_INO_MASK(XFS_INO_OFFSET_BITS(mp)))
|
2005-11-01 20:38:42 -07:00
|
|
|
#define XFS_INO_TO_FSB(mp,i) \
|
2005-04-16 16:20:36 -06:00
|
|
|
XFS_AGB_TO_FSB(mp, XFS_INO_TO_AGNO(mp,i), XFS_INO_TO_AGBNO(mp,i))
|
|
|
|
#define XFS_AGINO_TO_INO(mp,a,i) \
|
|
|
|
(((xfs_ino_t)(a) << XFS_INO_AGINO_BITS(mp)) | (i))
|
|
|
|
#define XFS_AGINO_TO_AGBNO(mp,i) ((i) >> XFS_INO_OFFSET_BITS(mp))
|
|
|
|
#define XFS_AGINO_TO_OFFSET(mp,i) \
|
|
|
|
((i) & XFS_INO_MASK(XFS_INO_OFFSET_BITS(mp)))
|
|
|
|
#define XFS_OFFBNO_TO_AGINO(mp,b,o) \
|
|
|
|
((xfs_agino_t)(((b) << XFS_INO_OFFSET_BITS(mp)) | (o)))
|
|
|
|
|
|
|
|
#if XFS_BIG_INUMS
|
|
|
|
#define XFS_MAXINUMBER ((xfs_ino_t)((1ULL << 56) - 1ULL))
|
|
|
|
#define XFS_INO64_OFFSET ((xfs_ino_t)(1ULL << 32))
|
|
|
|
#else
|
|
|
|
#define XFS_MAXINUMBER ((xfs_ino_t)((1ULL << 32) - 1ULL))
|
|
|
|
#endif
|
|
|
|
#define XFS_MAXINUMBER_32 ((xfs_ino_t)((1ULL << 32) - 1ULL))
|
|
|
|
|
|
|
|
#endif /* __XFS_INUM_H__ */
|