linux/fs/xfs/xfs_inode_item.h
<<
>>
Prefs
   1/*
   2 * Copyright (c) 2000,2005 Silicon Graphics, Inc.
   3 * All Rights Reserved.
   4 *
   5 * This program is free software; you can redistribute it and/or
   6 * modify it under the terms of the GNU General Public License as
   7 * published by the Free Software Foundation.
   8 *
   9 * This program is distributed in the hope that it would be useful,
  10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 * GNU General Public License for more details.
  13 *
  14 * You should have received a copy of the GNU General Public License
  15 * along with this program; if not, write the Free Software Foundation,
  16 * Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  17 */
  18#ifndef __XFS_INODE_ITEM_H__
  19#define __XFS_INODE_ITEM_H__
  20
  21/*
  22 * This is the structure used to lay out an inode log item in the
  23 * log.  The size of the inline data/extents/b-tree root to be logged
  24 * (if any) is indicated in the ilf_dsize field.  Changes to this structure
  25 * must be added on to the end.
  26 */
  27typedef struct xfs_inode_log_format {
  28        __uint16_t              ilf_type;       /* inode log item type */
  29        __uint16_t              ilf_size;       /* size of this item */
  30        __uint32_t              ilf_fields;     /* flags for fields logged */
  31        __uint16_t              ilf_asize;      /* size of attr d/ext/root */
  32        __uint16_t              ilf_dsize;      /* size of data/ext/root */
  33        __uint64_t              ilf_ino;        /* inode number */
  34        union {
  35                __uint32_t      ilfu_rdev;      /* rdev value for dev inode*/
  36                uuid_t          ilfu_uuid;      /* mount point value */
  37        } ilf_u;
  38        __int64_t               ilf_blkno;      /* blkno of inode buffer */
  39        __int32_t               ilf_len;        /* len of inode buffer */
  40        __int32_t               ilf_boffset;    /* off of inode in buffer */
  41} xfs_inode_log_format_t;
  42
  43typedef struct xfs_inode_log_format_32 {
  44        __uint16_t              ilf_type;       /* inode log item type */
  45        __uint16_t              ilf_size;       /* size of this item */
  46        __uint32_t              ilf_fields;     /* flags for fields logged */
  47        __uint16_t              ilf_asize;      /* size of attr d/ext/root */
  48        __uint16_t              ilf_dsize;      /* size of data/ext/root */
  49        __uint64_t              ilf_ino;        /* inode number */
  50        union {
  51                __uint32_t      ilfu_rdev;      /* rdev value for dev inode*/
  52                uuid_t          ilfu_uuid;      /* mount point value */
  53        } ilf_u;
  54        __int64_t               ilf_blkno;      /* blkno of inode buffer */
  55        __int32_t               ilf_len;        /* len of inode buffer */
  56        __int32_t               ilf_boffset;    /* off of inode in buffer */
  57} __attribute__((packed)) xfs_inode_log_format_32_t;
  58
  59typedef struct xfs_inode_log_format_64 {
  60        __uint16_t              ilf_type;       /* inode log item type */
  61        __uint16_t              ilf_size;       /* size of this item */
  62        __uint32_t              ilf_fields;     /* flags for fields logged */
  63        __uint16_t              ilf_asize;      /* size of attr d/ext/root */
  64        __uint16_t              ilf_dsize;      /* size of data/ext/root */
  65        __uint32_t              ilf_pad;        /* pad for 64 bit boundary */
  66        __uint64_t              ilf_ino;        /* inode number */
  67        union {
  68                __uint32_t      ilfu_rdev;      /* rdev value for dev inode*/
  69                uuid_t          ilfu_uuid;      /* mount point value */
  70        } ilf_u;
  71        __int64_t               ilf_blkno;      /* blkno of inode buffer */
  72        __int32_t               ilf_len;        /* len of inode buffer */
  73        __int32_t               ilf_boffset;    /* off of inode in buffer */
  74} xfs_inode_log_format_64_t;
  75
  76/*
  77 * Flags for xfs_trans_log_inode flags field.
  78 */
  79#define XFS_ILOG_CORE   0x001   /* log standard inode fields */
  80#define XFS_ILOG_DDATA  0x002   /* log i_df.if_data */
  81#define XFS_ILOG_DEXT   0x004   /* log i_df.if_extents */
  82#define XFS_ILOG_DBROOT 0x008   /* log i_df.i_broot */
  83#define XFS_ILOG_DEV    0x010   /* log the dev field */
  84#define XFS_ILOG_UUID   0x020   /* log the uuid field */
  85#define XFS_ILOG_ADATA  0x040   /* log i_af.if_data */
  86#define XFS_ILOG_AEXT   0x080   /* log i_af.if_extents */
  87#define XFS_ILOG_ABROOT 0x100   /* log i_af.i_broot */
  88
  89
  90/*
  91 * The timestamps are dirty, but not necessarily anything else in the inode
  92 * core.  Unlike the other fields above this one must never make it to disk
  93 * in the ilf_fields of the inode_log_format, but is purely store in-memory in
  94 * ili_fields in the inode_log_item.
  95 */
  96#define XFS_ILOG_TIMESTAMP      0x4000
  97
  98#define XFS_ILOG_NONCORE        (XFS_ILOG_DDATA | XFS_ILOG_DEXT | \
  99                                 XFS_ILOG_DBROOT | XFS_ILOG_DEV | \
 100                                 XFS_ILOG_UUID | XFS_ILOG_ADATA | \
 101                                 XFS_ILOG_AEXT | XFS_ILOG_ABROOT)
 102
 103#define XFS_ILOG_DFORK          (XFS_ILOG_DDATA | XFS_ILOG_DEXT | \
 104                                 XFS_ILOG_DBROOT)
 105
 106#define XFS_ILOG_AFORK          (XFS_ILOG_ADATA | XFS_ILOG_AEXT | \
 107                                 XFS_ILOG_ABROOT)
 108
 109#define XFS_ILOG_ALL            (XFS_ILOG_CORE | XFS_ILOG_DDATA | \
 110                                 XFS_ILOG_DEXT | XFS_ILOG_DBROOT | \
 111                                 XFS_ILOG_DEV | XFS_ILOG_UUID | \
 112                                 XFS_ILOG_ADATA | XFS_ILOG_AEXT | \
 113                                 XFS_ILOG_ABROOT | XFS_ILOG_TIMESTAMP)
 114
 115static inline int xfs_ilog_fbroot(int w)
 116{
 117        return (w == XFS_DATA_FORK ? XFS_ILOG_DBROOT : XFS_ILOG_ABROOT);
 118}
 119
 120static inline int xfs_ilog_fext(int w)
 121{
 122        return (w == XFS_DATA_FORK ? XFS_ILOG_DEXT : XFS_ILOG_AEXT);
 123}
 124
 125static inline int xfs_ilog_fdata(int w)
 126{
 127        return (w == XFS_DATA_FORK ? XFS_ILOG_DDATA : XFS_ILOG_ADATA);
 128}
 129
 130#ifdef __KERNEL__
 131
 132struct xfs_buf;
 133struct xfs_bmbt_rec;
 134struct xfs_inode;
 135struct xfs_mount;
 136
 137
 138typedef struct xfs_inode_log_item {
 139        xfs_log_item_t          ili_item;          /* common portion */
 140        struct xfs_inode        *ili_inode;        /* inode ptr */
 141        xfs_lsn_t               ili_flush_lsn;     /* lsn at last flush */
 142        xfs_lsn_t               ili_last_lsn;      /* lsn at last transaction */
 143        unsigned short          ili_lock_flags;    /* lock flags */
 144        unsigned short          ili_logged;        /* flushed logged data */
 145        unsigned int            ili_last_fields;   /* fields when flushed */
 146        unsigned int            ili_fields;        /* fields to be logged */
 147        struct xfs_bmbt_rec     *ili_extents_buf;  /* array of logged
 148                                                      data exts */
 149        struct xfs_bmbt_rec     *ili_aextents_buf; /* array of logged
 150                                                      attr exts */
 151#ifdef XFS_TRANS_DEBUG
 152        int                     ili_root_size;
 153        char                    *ili_orig_root;
 154#endif
 155        xfs_inode_log_format_t  ili_format;        /* logged structure */
 156} xfs_inode_log_item_t;
 157
 158
 159static inline int xfs_inode_clean(xfs_inode_t *ip)
 160{
 161        return !ip->i_itemp || !(ip->i_itemp->ili_fields & XFS_ILOG_ALL);
 162}
 163
 164extern void xfs_inode_item_init(struct xfs_inode *, struct xfs_mount *);
 165extern void xfs_inode_item_destroy(struct xfs_inode *);
 166extern void xfs_iflush_done(struct xfs_buf *, struct xfs_log_item *);
 167extern void xfs_istale_done(struct xfs_buf *, struct xfs_log_item *);
 168extern void xfs_iflush_abort(struct xfs_inode *, bool);
 169extern int xfs_inode_item_format_convert(xfs_log_iovec_t *,
 170                                         xfs_inode_log_format_t *);
 171
 172#endif  /* __KERNEL__ */
 173
 174#endif  /* __XFS_INODE_ITEM_H__ */
 175
lxr.linux.no kindly hosted by Redpill Linpro AS, provider of Linux consulting and operations services since 1995.