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Commit 6d3ebaae authored by Christoph Hellwig's avatar Christoph Hellwig Committed by Dave Chinner
Browse files

xfs: merge xfs_dinode.h into xfs_format.h 



More consolidatation for the on-disk format defintions.  Note that the
XFS_IS_REALTIME_INODE moves to xfs_linux.h instead as it is not related
to the on disk format, but depends on a CONFIG_ option.

Signed-off-by: default avatarChristoph Hellwig <hch@lst.de>
Reviewed-by: default avatarDave Chinner <dchinner@redhat.com>
Signed-off-by: default avatarDave Chinner <david@fromorbit.com>
parent cac7f242

fs/xfs/libxfs/xfs_attr.c

+0 −1
Original line number Diff line number Diff line
@@ -42,7 +42,6 @@ 
#include "xfs_quota.h"

#include "xfs_trans_space.h"

#include "xfs_trace.h"

#include "xfs_dinode.h"



/*

 * xfs_attr.c

fs/xfs/libxfs/xfs_attr_leaf.c

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@@ -41,7 +41,6 @@ 
#include "xfs_trace.h"

#include "xfs_buf_item.h"

#include "xfs_cksum.h"

#include "xfs_dinode.h"

#include "xfs_dir2.h"

fs/xfs/libxfs/xfs_bmap.c

+0 −1
Original line number Diff line number Diff line
@@ -46,7 +46,6 @@ 
#include "xfs_trace.h"

#include "xfs_symlink.h"

#include "xfs_attr_leaf.h"

#include "xfs_dinode.h"

#include "xfs_filestream.h"

fs/xfs/libxfs/xfs_bmap_btree.c

+0 −1
Original line number Diff line number Diff line
@@ -36,7 +36,6 @@ 
#include "xfs_quota.h"

#include "xfs_trace.h"

#include "xfs_cksum.h"

#include "xfs_dinode.h"



/*

 * Determine the extent state.

fs/xfs/libxfs/xfs_dinode.h

deleted100644 → 0
+0 −243
Original line number Diff line number Diff line 
/*

 * Copyright (c) 2000,2002,2005 Silicon Graphics, Inc.

 * All Rights Reserved.

 *

 * This program is free software; you can redistribute it and/or

 * modify it under the terms 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.  See the

 * GNU General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program; if not, write the Free Software Foundation,

 * Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA

 */

#ifndef __XFS_DINODE_H__

#define	__XFS_DINODE_H__



#define	XFS_DINODE_MAGIC		0x494e	/* 'IN' */

#define XFS_DINODE_GOOD_VERSION(v)	((v) >= 1 && (v) <= 3)



typedef struct xfs_timestamp {

	__be32		t_sec;		/* timestamp seconds */

	__be32		t_nsec;		/* timestamp nanoseconds */

} xfs_timestamp_t;



/*

 * On-disk inode structure.

 *

 * This is just the header or "dinode core", the inode is expanded to fill a

 * variable size the leftover area split into a data and an attribute fork.

 * The format of the data and attribute fork depends on the format of the

 * inode as indicated by di_format and di_aformat.  To access the data and

 * attribute use the XFS_DFORK_DPTR, XFS_DFORK_APTR, and XFS_DFORK_PTR macros

 * below.

 *

 * There is a very similar struct icdinode in xfs_inode which matches the

 * layout of the first 96 bytes of this structure, but is kept in native

 * format instead of big endian.

 *

 * Note: di_flushiter is only used by v1/2 inodes - it's effectively a zeroed

 * padding field for v3 inodes.

 */

typedef struct xfs_dinode {

	__be16		di_magic;	/* inode magic # = XFS_DINODE_MAGIC */

	__be16		di_mode;	/* mode and type of file */

	__u8		di_version;	/* inode version */

	__u8		di_format;	/* format of di_c data */

	__be16		di_onlink;	/* old number of links to file */

	__be32		di_uid;		/* owner's user id */

	__be32		di_gid;		/* owner's group id */

	__be32		di_nlink;	/* number of links to file */

	__be16		di_projid_lo;	/* lower part of owner's project id */

	__be16		di_projid_hi;	/* higher part owner's project id */

	__u8		di_pad[6];	/* unused, zeroed space */

	__be16		di_flushiter;	/* incremented on flush */

	xfs_timestamp_t	di_atime;	/* time last accessed */

	xfs_timestamp_t	di_mtime;	/* time last modified */

	xfs_timestamp_t	di_ctime;	/* time created/inode modified */

	__be64		di_size;	/* number of bytes in file */

	__be64		di_nblocks;	/* # of direct & btree blocks used */

	__be32		di_extsize;	/* basic/minimum extent size for file */

	__be32		di_nextents;	/* number of extents in data fork */

	__be16		di_anextents;	/* number of extents in attribute fork*/

	__u8		di_forkoff;	/* attr fork offs, <<3 for 64b align */

	__s8		di_aformat;	/* format of attr fork's data */

	__be32		di_dmevmask;	/* DMIG event mask */

	__be16		di_dmstate;	/* DMIG state info */

	__be16		di_flags;	/* random flags, XFS_DIFLAG_... */

	__be32		di_gen;		/* generation number */



	/* di_next_unlinked is the only non-core field in the old dinode */

	__be32		di_next_unlinked;/* agi unlinked list ptr */



	/* start of the extended dinode, writable fields */

	__le32		di_crc;		/* CRC of the inode */

	__be64		di_changecount;	/* number of attribute changes */

	__be64		di_lsn;		/* flush sequence */

	__be64		di_flags2;	/* more random flags */

	__u8		di_pad2[16];	/* more padding for future expansion */



	/* fields only written to during inode creation */

	xfs_timestamp_t	di_crtime;	/* time created */

	__be64		di_ino;		/* inode number */

	uuid_t		di_uuid;	/* UUID of the filesystem */



	/* structure must be padded to 64 bit alignment */

} xfs_dinode_t;



#define XFS_DINODE_CRC_OFF	offsetof(struct xfs_dinode, di_crc)



#define DI_MAX_FLUSH 0xffff



/*

 * Size of the core inode on disk.  Version 1 and 2 inodes have

 * the same size, but version 3 has grown a few additional fields.

 */

static inline uint xfs_dinode_size(int version)

{

	if (version == 3)

		return sizeof(struct xfs_dinode);

	return offsetof(struct xfs_dinode, di_crc);

}



/*

 * The 32 bit link count in the inode theoretically maxes out at UINT_MAX.

 * Since the pathconf interface is signed, we use 2^31 - 1 instead.

 * The old inode format had a 16 bit link count, so its maximum is USHRT_MAX.

 */

#define	XFS_MAXLINK		((1U << 31) - 1U)

#define	XFS_MAXLINK_1		65535U



/*

 * Values for di_format

 */

typedef enum xfs_dinode_fmt {

	XFS_DINODE_FMT_DEV,		/* xfs_dev_t */

	XFS_DINODE_FMT_LOCAL,		/* bulk data */

	XFS_DINODE_FMT_EXTENTS,		/* struct xfs_bmbt_rec */

	XFS_DINODE_FMT_BTREE,		/* struct xfs_bmdr_block */

	XFS_DINODE_FMT_UUID		/* uuid_t */

} xfs_dinode_fmt_t;



/*

 * Inode minimum and maximum sizes.

 */

#define	XFS_DINODE_MIN_LOG	8

#define	XFS_DINODE_MAX_LOG	11

#define	XFS_DINODE_MIN_SIZE	(1 << XFS_DINODE_MIN_LOG)

#define	XFS_DINODE_MAX_SIZE	(1 << XFS_DINODE_MAX_LOG)



/*

 * Inode size for given fs.

 */

#define XFS_LITINO(mp, version) \

	((int)(((mp)->m_sb.sb_inodesize) - xfs_dinode_size(version)))



/*

 * Inode data & attribute fork sizes, per inode.

 */

#define XFS_DFORK_Q(dip)		((dip)->di_forkoff != 0)

#define XFS_DFORK_BOFF(dip)		((int)((dip)->di_forkoff << 3))



#define XFS_DFORK_DSIZE(dip,mp) \

	(XFS_DFORK_Q(dip) ? \

		XFS_DFORK_BOFF(dip) : \

		XFS_LITINO(mp, (dip)->di_version))

#define XFS_DFORK_ASIZE(dip,mp) \

	(XFS_DFORK_Q(dip) ? \

		XFS_LITINO(mp, (dip)->di_version) - XFS_DFORK_BOFF(dip) : \

		0)

#define XFS_DFORK_SIZE(dip,mp,w) \

	((w) == XFS_DATA_FORK ? \

		XFS_DFORK_DSIZE(dip, mp) : \

		XFS_DFORK_ASIZE(dip, mp))



/*

 * Return pointers to the data or attribute forks.

 */

#define XFS_DFORK_DPTR(dip) \

	((char *)dip + xfs_dinode_size(dip->di_version))

#define XFS_DFORK_APTR(dip)	\

	(XFS_DFORK_DPTR(dip) + XFS_DFORK_BOFF(dip))

#define XFS_DFORK_PTR(dip,w)	\

	((w) == XFS_DATA_FORK ? XFS_DFORK_DPTR(dip) : XFS_DFORK_APTR(dip))



#define XFS_DFORK_FORMAT(dip,w) \

	((w) == XFS_DATA_FORK ? \

		(dip)->di_format : \

		(dip)->di_aformat)

#define XFS_DFORK_NEXTENTS(dip,w) \

	((w) == XFS_DATA_FORK ? \

		be32_to_cpu((dip)->di_nextents) : \

		be16_to_cpu((dip)->di_anextents))



#define	XFS_BUF_TO_DINODE(bp)	((xfs_dinode_t *)((bp)->b_addr))



/*

 * For block and character special files the 32bit dev_t is stored at the

 * beginning of the data fork.

 */

static inline xfs_dev_t xfs_dinode_get_rdev(struct xfs_dinode *dip)

{

	return be32_to_cpu(*(__be32 *)XFS_DFORK_DPTR(dip));

}



static inline void xfs_dinode_put_rdev(struct xfs_dinode *dip, xfs_dev_t rdev)

{

	*(__be32 *)XFS_DFORK_DPTR(dip) = cpu_to_be32(rdev);

}



/*

 * Values for di_flags

 * There should be a one-to-one correspondence between these flags and the

 * XFS_XFLAG_s.

 */

#define XFS_DIFLAG_REALTIME_BIT  0	/* file's blocks come from rt area */

#define XFS_DIFLAG_PREALLOC_BIT  1	/* file space has been preallocated */

#define XFS_DIFLAG_NEWRTBM_BIT   2	/* for rtbitmap inode, new format */

#define XFS_DIFLAG_IMMUTABLE_BIT 3	/* inode is immutable */

#define XFS_DIFLAG_APPEND_BIT    4	/* inode is append-only */

#define XFS_DIFLAG_SYNC_BIT      5	/* inode is written synchronously */

#define XFS_DIFLAG_NOATIME_BIT   6	/* do not update atime */

#define XFS_DIFLAG_NODUMP_BIT    7	/* do not dump */

#define XFS_DIFLAG_RTINHERIT_BIT 8	/* create with realtime bit set */

#define XFS_DIFLAG_PROJINHERIT_BIT   9	/* create with parents projid */

#define XFS_DIFLAG_NOSYMLINKS_BIT   10	/* disallow symlink creation */

#define XFS_DIFLAG_EXTSIZE_BIT      11	/* inode extent size allocator hint */

#define XFS_DIFLAG_EXTSZINHERIT_BIT 12	/* inherit inode extent size */

#define XFS_DIFLAG_NODEFRAG_BIT     13	/* do not reorganize/defragment */

#define XFS_DIFLAG_FILESTREAM_BIT   14  /* use filestream allocator */

#define XFS_DIFLAG_REALTIME      (1 << XFS_DIFLAG_REALTIME_BIT)

#define XFS_DIFLAG_PREALLOC      (1 << XFS_DIFLAG_PREALLOC_BIT)

#define XFS_DIFLAG_NEWRTBM       (1 << XFS_DIFLAG_NEWRTBM_BIT)

#define XFS_DIFLAG_IMMUTABLE     (1 << XFS_DIFLAG_IMMUTABLE_BIT)

#define XFS_DIFLAG_APPEND        (1 << XFS_DIFLAG_APPEND_BIT)

#define XFS_DIFLAG_SYNC          (1 << XFS_DIFLAG_SYNC_BIT)

#define XFS_DIFLAG_NOATIME       (1 << XFS_DIFLAG_NOATIME_BIT)

#define XFS_DIFLAG_NODUMP        (1 << XFS_DIFLAG_NODUMP_BIT)

#define XFS_DIFLAG_RTINHERIT     (1 << XFS_DIFLAG_RTINHERIT_BIT)

#define XFS_DIFLAG_PROJINHERIT   (1 << XFS_DIFLAG_PROJINHERIT_BIT)

#define XFS_DIFLAG_NOSYMLINKS    (1 << XFS_DIFLAG_NOSYMLINKS_BIT)

#define XFS_DIFLAG_EXTSIZE       (1 << XFS_DIFLAG_EXTSIZE_BIT)

#define XFS_DIFLAG_EXTSZINHERIT  (1 << XFS_DIFLAG_EXTSZINHERIT_BIT)

#define XFS_DIFLAG_NODEFRAG      (1 << XFS_DIFLAG_NODEFRAG_BIT)

#define XFS_DIFLAG_FILESTREAM    (1 << XFS_DIFLAG_FILESTREAM_BIT)



#ifdef CONFIG_XFS_RT

#define XFS_IS_REALTIME_INODE(ip) ((ip)->i_d.di_flags & XFS_DIFLAG_REALTIME)

#else

#define XFS_IS_REALTIME_INODE(ip) (0)

#endif



#define XFS_DIFLAG_ANY \

	(XFS_DIFLAG_REALTIME | XFS_DIFLAG_PREALLOC | XFS_DIFLAG_NEWRTBM | \

	 XFS_DIFLAG_IMMUTABLE | XFS_DIFLAG_APPEND | XFS_DIFLAG_SYNC | \

	 XFS_DIFLAG_NOATIME | XFS_DIFLAG_NODUMP | XFS_DIFLAG_RTINHERIT | \

	 XFS_DIFLAG_PROJINHERIT | XFS_DIFLAG_NOSYMLINKS | XFS_DIFLAG_EXTSIZE | \

	 XFS_DIFLAG_EXTSZINHERIT | XFS_DIFLAG_NODEFRAG | XFS_DIFLAG_FILESTREAM)



#endif	/* __XFS_DINODE_H__ */