Return to xfs_inode_item.h CVS log

Up to [Development] / xfs-linux

Encumbrance review done.
Add copyright and license words consistent with GPL.
Refer to http://fsg.melbourne.sgi.com/reviews/ for details.

There is a slight change in the license terms and conditions words
to go with the copyrights, so most of the files are not getting
new GPL's, just updated versions ... but there are 20-30 more files
here as well.

/*
 * Copyright (C) 1999 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; either version 2 of the License, or (at
 * your option) any later version.
 * 
 * This program is distributed in the hope that it will 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., 59 Temple Place - Suite 330, Boston MA 02111-1307, USA.
 */
#ifndef	_XFS_INODE_ITEM_H
#define	_XFS_INODE_ITEM_H

#ident "$Revision: 1.33 $"

struct xfs_buf;
struct proc;
struct xfs_bmbt_rec_32;
struct xfs_inode;
struct xfs_mount;

/*
 * This is the structure used to lay out an inode log item in the
 * log.  The size of the inline data/extents/b-tree root to be logged
 * (if any) is indicated in the ilf_dsize field.  Changes to this structure
 * must be added on to the end.
 *
 * Convention for naming inode log item versions :  The current version
 * is always named XFS_LI_INODE.  When an inode log item gets superseded,
 * add the latest version of IRIX that will generate logs with that item
 * to the version name.
 *
 * -Version 1 of this structure (XFS_LI_5_3_INODE) included up to the first
 *	union (ilf_u) field.  This was released with IRIX 5.3-XFS.
 * -Version 2 of this structure (XFS_LI_6_1_INODE) is currently the entire
 *	structure.  This was released with IRIX 6.0.1-XFS and IRIX 6.1.
 * -Version 3 of this structure (XFS_LI_INODE) is the same as version 2
 *	so a new structure definition wasn't necessary.  However, we had
 *	to add a new type because the inode cluster size changed from 4K
 *	to 8K and the version number had to be rev'ved to keep older kernels
 *	from trying to recover logs with the 8K buffers in them.  The logging
 *	code can handle recovery on different-sized clusters now so hopefully
 *	this'll be the last time we need to change the inode log item just
 *	for a change in the inode cluster size.  This new version was
 *	released with IRIX 6.2.
 */
typedef struct xfs_inode_log_format {
	unsigned short		ilf_type;	/* inode log item type */
	unsigned short		ilf_size;	/* size of this item */
	uint			ilf_fields;	/* flags for fields logged */
	ushort			ilf_asize;	/* size of attr d/ext/root */
	ushort			ilf_dsize;	/* size of data/ext/root */
	xfs_ino_t		ilf_ino;	/* inode number */
	union {
		dev_t		ilfu_rdev;	/* rdev value for dev inode*/
		uuid_t		ilfu_uuid;	/* mount point value */
	} ilf_u;
	__int64_t		ilf_blkno;	/* blkno of inode buffer */
	int			ilf_len;	/* len of inode buffer */
	int			ilf_boffset;	/* off of inode in buffer */
} xfs_inode_log_format_t;

/* Initial version shipped with IRIX 5.3-XFS */
typedef struct xfs_inode_log_format_v1 {
	unsigned short		ilf_type;	/* inode log item type */
	unsigned short		ilf_size;	/* size of this item */
	uint			ilf_fields;	/* flags for fields logged */
	uint			ilf_dsize;	/* size of data/ext/root */
	xfs_ino_t		ilf_ino;	/* inode number */
	union {
		dev_t		ilfu_rdev;	/* rdev value for dev inode*/
		uuid_t		ilfu_uuid;	/* mount point value */
	} ilf_u;
} xfs_inode_log_format_t_v1;

typedef struct xfs_inode_log_item {
	xfs_log_item_t		ili_item;	   /* common portion */
	struct xfs_inode	*ili_inode;	   /* inode ptr */
	xfs_lsn_t		ili_flush_lsn;	   /* lsn at last flush */
	xfs_lsn_t		ili_last_lsn;	   /* lsn at last transaction */
	unsigned short		ili_ilock_recur;   /* lock recursion count */
	unsigned short		ili_iolock_recur;  /* lock recursion count */
	unsigned short		ili_flags;	   /* misc flags */
	unsigned short		ili_logged;	   /* flushed logged data */
	unsigned int		ili_last_fields;   /* fields when flushed */
	struct xfs_bmbt_rec_32	*ili_extents_buf;  /* array of logged exts */
	unsigned int            ili_pushbuf_flag;  /* one bit used in push_ail */

#ifdef DEBUG
	uint64_t                ili_push_owner;    /* one who sets pushbuf_flag
						      above gets to push the buf */
#endif
#ifdef XFS_TRANS_DEBUG
	int			ili_root_size;
	char			*ili_orig_root;
#endif
	xfs_inode_log_format_t	ili_format;	   /* logged structure */
} xfs_inode_log_item_t;

#define	XFS_ILI_HOLD		0x1
#define	XFS_ILI_IOLOCKED_EXCL	0x2
#define	XFS_ILI_IOLOCKED_SHARED	0x4

#define	XFS_ILI_IOLOCKED_ANY   (XFS_ILI_IOLOCKED_EXCL | XFS_ILI_IOLOCKED_SHARED)

/*
 * Flags for xfs_trans_log_inode flags field.
 */
#define	XFS_ILOG_CORE	0x001	/* log standard inode fields */
#define	XFS_ILOG_DDATA	0x002	/* log i_df.if_data */
#define	XFS_ILOG_DEXT	0x004	/* log i_df.if_extents */
#define	XFS_ILOG_DBROOT	0x008	/* log i_df.i_broot */
#define	XFS_ILOG_DEV	0x010	/* log the dev field */
#define	XFS_ILOG_UUID	0x020	/* log the uuid field */
#define	XFS_ILOG_ADATA	0x040	/* log i_af.if_data */
#define	XFS_ILOG_AEXT	0x080	/* log i_af.if_extents */
#define	XFS_ILOG_ABROOT	0x100	/* log i_af.i_broot */

#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_ILOG_FDATA)
int xfs_ilog_fdata(int w);
#define	XFS_ILOG_FDATA(w)	xfs_ilog_fdata(w)
#else
#define	XFS_ILOG_FDATA(w)	\
	((w) == XFS_DATA_FORK ? XFS_ILOG_DDATA : XFS_ILOG_ADATA)
#endif
#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_ILOG_FBROOT)
int xfs_ilog_fbroot(int w);
#define	XFS_ILOG_FBROOT(w)	xfs_ilog_fbroot(w)
#else
#define	XFS_ILOG_FBROOT(w)	\
	((w) == XFS_DATA_FORK ? XFS_ILOG_DBROOT : XFS_ILOG_ABROOT)
#endif
#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_ILOG_FEXT)
int xfs_ilog_fext(int w);
#define	XFS_ILOG_FEXT(w)	xfs_ilog_fext(w)
#else
#define	XFS_ILOG_FEXT(w)	\
	((w) == XFS_DATA_FORK ? XFS_ILOG_DEXT : XFS_ILOG_AEXT)
#endif

#define	XFS_ILOG_NONCORE	(XFS_ILOG_DDATA | XFS_ILOG_DEXT | \
				 XFS_ILOG_DBROOT | XFS_ILOG_DEV | \
				 XFS_ILOG_UUID | XFS_ILOG_ADATA | \
				 XFS_ILOG_AEXT | XFS_ILOG_ABROOT)

#define	XFS_ILOG_DFORK		(XFS_ILOG_DDATA | XFS_ILOG_DEXT | \
				 XFS_ILOG_DBROOT)

#define	XFS_ILOG_AFORK		(XFS_ILOG_ADATA | XFS_ILOG_AEXT | \
				 XFS_ILOG_ABROOT)

#define	XFS_ILOG_ALL		(XFS_ILOG_CORE | XFS_ILOG_DDATA | \
				 XFS_ILOG_DEXT | XFS_ILOG_DBROOT | \
				 XFS_ILOG_DEV | XFS_ILOG_UUID | \
				 XFS_ILOG_ADATA | XFS_ILOG_AEXT | \
				 XFS_ILOG_ABROOT)

     
void	xfs_inode_item_init(struct xfs_inode *, struct xfs_mount *);
void	xfs_inode_item_destroy(struct xfs_inode *);
void	xfs_iflush_done(struct xfs_buf *, xfs_inode_log_item_t *);
void	xfs_iflush_abort(struct xfs_inode *);

#endif	/* _XFS_INODE_ITEM_H */