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author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /fs/xfs/xfs_inum.h | |
download | kernel_samsung_espresso10-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.zip kernel_samsung_espresso10-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.gz kernel_samsung_espresso10-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.bz2 |
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!
Diffstat (limited to 'fs/xfs/xfs_inum.h')
-rw-r--r-- | fs/xfs/xfs_inum.h | 173 |
1 files changed, 173 insertions, 0 deletions
diff --git a/fs/xfs/xfs_inum.h b/fs/xfs/xfs_inum.h new file mode 100644 index 0000000..a3af2d5 --- /dev/null +++ b/fs/xfs/xfs_inum.h @@ -0,0 +1,173 @@ +/* + * 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; + +#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_INO_MASK) +__uint32_t xfs_ino_mask(int k); +#define XFS_INO_MASK(k) xfs_ino_mask(k) +#else +#define XFS_INO_MASK(k) ((__uint32_t)((1ULL << (k)) - 1)) +#endif +#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_INO_OFFSET_BITS) +int xfs_ino_offset_bits(struct xfs_mount *mp); +#define XFS_INO_OFFSET_BITS(mp) xfs_ino_offset_bits(mp) +#else +#define XFS_INO_OFFSET_BITS(mp) ((mp)->m_sb.sb_inopblog) +#endif +#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_INO_AGBNO_BITS) +int xfs_ino_agbno_bits(struct xfs_mount *mp); +#define XFS_INO_AGBNO_BITS(mp) xfs_ino_agbno_bits(mp) +#else +#define XFS_INO_AGBNO_BITS(mp) ((mp)->m_sb.sb_agblklog) +#endif +#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_INO_AGINO_BITS) +int xfs_ino_agino_bits(struct xfs_mount *mp); +#define XFS_INO_AGINO_BITS(mp) xfs_ino_agino_bits(mp) +#else +#define XFS_INO_AGINO_BITS(mp) ((mp)->m_agino_log) +#endif +#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_INO_AGNO_BITS) +int xfs_ino_agno_bits(struct xfs_mount *mp); +#define XFS_INO_AGNO_BITS(mp) xfs_ino_agno_bits(mp) +#else +#define XFS_INO_AGNO_BITS(mp) ((mp)->m_agno_log) +#endif +#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_INO_BITS) +int xfs_ino_bits(struct xfs_mount *mp); +#define XFS_INO_BITS(mp) xfs_ino_bits(mp) +#else +#define XFS_INO_BITS(mp) (XFS_INO_AGNO_BITS(mp) + XFS_INO_AGINO_BITS(mp)) +#endif + +#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_INO_TO_AGNO) +xfs_agnumber_t xfs_ino_to_agno(struct xfs_mount *mp, xfs_ino_t i); +#define XFS_INO_TO_AGNO(mp,i) xfs_ino_to_agno(mp,i) +#else +#define XFS_INO_TO_AGNO(mp,i) \ + ((xfs_agnumber_t)((i) >> XFS_INO_AGINO_BITS(mp))) +#endif +#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_INO_TO_AGINO) +xfs_agino_t xfs_ino_to_agino(struct xfs_mount *mp, xfs_ino_t i); +#define XFS_INO_TO_AGINO(mp,i) xfs_ino_to_agino(mp,i) +#else +#define XFS_INO_TO_AGINO(mp,i) \ + ((xfs_agino_t)(i) & XFS_INO_MASK(XFS_INO_AGINO_BITS(mp))) +#endif +#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_INO_TO_AGBNO) +xfs_agblock_t xfs_ino_to_agbno(struct xfs_mount *mp, xfs_ino_t i); +#define XFS_INO_TO_AGBNO(mp,i) xfs_ino_to_agbno(mp,i) +#else +#define XFS_INO_TO_AGBNO(mp,i) \ + (((xfs_agblock_t)(i) >> XFS_INO_OFFSET_BITS(mp)) & \ + XFS_INO_MASK(XFS_INO_AGBNO_BITS(mp))) +#endif +#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_INO_TO_OFFSET) +int xfs_ino_to_offset(struct xfs_mount *mp, xfs_ino_t i); +#define XFS_INO_TO_OFFSET(mp,i) xfs_ino_to_offset(mp,i) +#else +#define XFS_INO_TO_OFFSET(mp,i) \ + ((int)(i) & XFS_INO_MASK(XFS_INO_OFFSET_BITS(mp))) +#endif +#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_INO_TO_FSB) +xfs_fsblock_t xfs_ino_to_fsb(struct xfs_mount *mp, xfs_ino_t i); +#define XFS_INO_TO_FSB(mp,i) xfs_ino_to_fsb(mp,i) +#else +#define XFS_INO_TO_FSB(mp,i) \ + XFS_AGB_TO_FSB(mp, XFS_INO_TO_AGNO(mp,i), XFS_INO_TO_AGBNO(mp,i)) +#endif + +#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_AGINO_TO_INO) +xfs_ino_t +xfs_agino_to_ino(struct xfs_mount *mp, xfs_agnumber_t a, xfs_agino_t i); +#define XFS_AGINO_TO_INO(mp,a,i) xfs_agino_to_ino(mp,a,i) +#else +#define XFS_AGINO_TO_INO(mp,a,i) \ + (((xfs_ino_t)(a) << XFS_INO_AGINO_BITS(mp)) | (i)) +#endif +#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_AGINO_TO_AGBNO) +xfs_agblock_t xfs_agino_to_agbno(struct xfs_mount *mp, xfs_agino_t i); +#define XFS_AGINO_TO_AGBNO(mp,i) xfs_agino_to_agbno(mp,i) +#else +#define XFS_AGINO_TO_AGBNO(mp,i) ((i) >> XFS_INO_OFFSET_BITS(mp)) +#endif +#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_AGINO_TO_OFFSET) +int xfs_agino_to_offset(struct xfs_mount *mp, xfs_agino_t i); +#define XFS_AGINO_TO_OFFSET(mp,i) xfs_agino_to_offset(mp,i) +#else +#define XFS_AGINO_TO_OFFSET(mp,i) \ + ((i) & XFS_INO_MASK(XFS_INO_OFFSET_BITS(mp))) +#endif + +#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_OFFBNO_TO_AGINO) +xfs_agino_t xfs_offbno_to_agino(struct xfs_mount *mp, xfs_agblock_t b, int o); +#define XFS_OFFBNO_TO_AGINO(mp,b,o) xfs_offbno_to_agino(mp,b,o) +#else +#define XFS_OFFBNO_TO_AGINO(mp,b,o) \ + ((xfs_agino_t)(((b) << XFS_INO_OFFSET_BITS(mp)) | (o))) +#endif + +#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__ */ |