fs/xfs/xfs_inode_item.h

   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  */
  27 typedef 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
  43 typedef 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
  59 typedef 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
 115 static inline int xfs_ilog_fbroot(int w)
 116 {
 117         return (w == XFS_DATA_FORK ? XFS_ILOG_DBROOT : XFS_ILOG_ABROOT);
 118 }
 119
 120 static inline int xfs_ilog_fext(int w)
 121 {
 122         return (w == XFS_DATA_FORK ? XFS_ILOG_DEXT : XFS_ILOG_AEXT);
 123 }
 124
 125 static 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
 132 struct xfs_buf;
 133 struct xfs_bmbt_rec;
 134 struct xfs_inode;
 135 struct xfs_mount;
 136
 137
 138 typedef 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         xfs_inode_log_format_t  ili_format;        /* logged structure */
 152 } xfs_inode_log_item_t;
 153
 154
 155 static inline int xfs_inode_clean(xfs_inode_t *ip)
 156 {
 157         return !ip->i_itemp || !(ip->i_itemp->ili_fields & XFS_ILOG_ALL);
 158 }
 159
 160 extern void xfs_inode_item_init(struct xfs_inode *, struct xfs_mount *);
 161 extern void xfs_inode_item_destroy(struct xfs_inode *);
 162 extern void xfs_iflush_done(struct xfs_buf *, struct xfs_log_item *);
 163 extern void xfs_istale_done(struct xfs_buf *, struct xfs_log_item *);
 164 extern void xfs_iflush_abort(struct xfs_inode *, bool);
 165 extern int xfs_inode_item_format_convert(xfs_log_iovec_t *,
 166                                          xfs_inode_log_format_t *);
 167
 168 #endif  /* __KERNEL__ */
 169
 170 #endif  /* __XFS_INODE_ITEM_H__ */