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Diffstat (limited to 'fs/xfs/xfs_inode_item.h')
| -rw-r--r-- | fs/xfs/xfs_inode_item.h | 197 |
1 files changed, 197 insertions, 0 deletions
diff --git a/fs/xfs/xfs_inode_item.h b/fs/xfs/xfs_inode_item.h new file mode 100644 index 000000000000..d8775e0d6291 --- /dev/null +++ b/fs/xfs/xfs_inode_item.h @@ -0,0 +1,197 @@ +/* + * Copyright (c) 2000 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_INODE_ITEM_H__ +#define __XFS_INODE_ITEM_H__ + +/* + * 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 When an inode log item gets superseded, + * add the latest version of IRIX that will generate logs with that item + * to the version name.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 { + xfs_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 { + xfs_dev_t ilfu_rdev; /* rdev value for dev inode*/ + uuid_t ilfu_uuid; /* mount point value */ + } ilf_u; +} xfs_inode_log_format_t_v1; + +/* + * 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 */ + +#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) + +#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) + + +#ifdef __KERNEL__ + +struct xfs_buf; +struct xfs_bmbt_rec_64; +struct xfs_inode; +struct xfs_mount; + + +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_64 *ili_extents_buf; /* array of logged + data exts */ + struct xfs_bmbt_rec_64 *ili_aextents_buf; /* array of logged + attr 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; + + +#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 + +#endif /* __KERNEL__ */ + +#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 + +#ifdef __KERNEL__ + +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_istale_done(struct xfs_buf *, xfs_inode_log_item_t *); +void xfs_iflush_abort(struct xfs_inode *); + +#endif /* __KERNEL__ */ + +#endif /* __XFS_INODE_ITEM_H__ */ |