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  * Convention for naming inode log item versions :  The current version
  28  * is always named XFS_LI_INODE.  When an inode log item gets superseded,
  29  * add the latest version of IRIX that will generate logs with that item
  30  * to the version name.
  31  *
  32  * -Version 1 of this structure (XFS_LI_5_3_INODE) included up to the first
  33  *      union (ilf_u) field.  This was released with IRIX 5.3-XFS.
  34  * -Version 2 of this structure (XFS_LI_6_1_INODE) is currently the entire
  35  *      structure.  This was released with IRIX 6.0.1-XFS and IRIX 6.1.
  36  * -Version 3 of this structure (XFS_LI_INODE) is the same as version 2
  37  *      so a new structure definition wasn't necessary.  However, we had
  38  *      to add a new type because the inode cluster size changed from 4K
  39  *      to 8K and the version number had to be rev'ved to keep older kernels
  40  *      from trying to recover logs with the 8K buffers in them.  The logging
  41  *      code can handle recovery on different-sized clusters now so hopefully
  42  *      this'll be the last time we need to change the inode log item just
  43  *      for a change in the inode cluster size.  This new version was
  44  *      released with IRIX 6.2.
  45  */
  46 typedef struct xfs_inode_log_format {
  47         unsigned short          ilf_type;       /* inode log item type */
  48         unsigned short          ilf_size;       /* size of this item */
  49         uint                    ilf_fields;     /* flags for fields logged */
  50         ushort                  ilf_asize;      /* size of attr d/ext/root */
  51         ushort                  ilf_dsize;      /* size of data/ext/root */
  52         xfs_ino_t               ilf_ino;        /* inode number */
  53         union {
  54                 xfs_dev_t       ilfu_rdev;      /* rdev value for dev inode*/
  55                 uuid_t          ilfu_uuid;      /* mount point value */
  56         } ilf_u;
  57         __int64_t               ilf_blkno;      /* blkno of inode buffer */
  58         int                     ilf_len;        /* len of inode buffer */
  59         int                     ilf_boffset;    /* off of inode in buffer */
  60 } xfs_inode_log_format_t;
  61
  62 /* Initial version shipped with IRIX 5.3-XFS */
  63 typedef struct xfs_inode_log_format_v1 {
  64         unsigned short          ilf_type;       /* inode log item type */
  65         unsigned short          ilf_size;       /* size of this item */
  66         uint                    ilf_fields;     /* flags for fields logged */
  67         uint                    ilf_dsize;      /* size of data/ext/root */
  68         xfs_ino_t               ilf_ino;        /* inode number */
  69         union {
  70                 xfs_dev_t       ilfu_rdev;      /* rdev value for dev inode*/
  71                 uuid_t          ilfu_uuid;      /* mount point value */
  72         } ilf_u;
  73 } xfs_inode_log_format_t_v1;
  74
  75 /*
  76  * Flags for xfs_trans_log_inode flags field.
  77  */
  78 #define XFS_ILOG_CORE   0x001   /* log standard inode fields */
  79 #define XFS_ILOG_DDATA  0x002   /* log i_df.if_data */
  80 #define XFS_ILOG_DEXT   0x004   /* log i_df.if_extents */
  81 #define XFS_ILOG_DBROOT 0x008   /* log i_df.i_broot */
  82 #define XFS_ILOG_DEV    0x010   /* log the dev field */
  83 #define XFS_ILOG_UUID   0x020   /* log the uuid field */
  84 #define XFS_ILOG_ADATA  0x040   /* log i_af.if_data */
  85 #define XFS_ILOG_AEXT   0x080   /* log i_af.if_extents */
  86 #define XFS_ILOG_ABROOT 0x100   /* log i_af.i_broot */
  87
  88 #define XFS_ILOG_NONCORE        (XFS_ILOG_DDATA | XFS_ILOG_DEXT | \
  89                                  XFS_ILOG_DBROOT | XFS_ILOG_DEV | \
  90                                  XFS_ILOG_UUID | XFS_ILOG_ADATA | \
  91                                  XFS_ILOG_AEXT | XFS_ILOG_ABROOT)
  92
  93 #define XFS_ILOG_DFORK          (XFS_ILOG_DDATA | XFS_ILOG_DEXT | \
  94                                  XFS_ILOG_DBROOT)
  95
  96 #define XFS_ILOG_AFORK          (XFS_ILOG_ADATA | XFS_ILOG_AEXT | \
  97                                  XFS_ILOG_ABROOT)
  98
  99 #define XFS_ILOG_ALL            (XFS_ILOG_CORE | XFS_ILOG_DDATA | \
 100                                  XFS_ILOG_DEXT | XFS_ILOG_DBROOT | \
 101                                  XFS_ILOG_DEV | XFS_ILOG_UUID | \
 102                                  XFS_ILOG_ADATA | XFS_ILOG_AEXT | \
 103                                  XFS_ILOG_ABROOT)
 104
 105 #define XFS_ILI_HOLD            0x1
 106 #define XFS_ILI_IOLOCKED_EXCL   0x2
 107 #define XFS_ILI_IOLOCKED_SHARED 0x4
 108
 109 #define XFS_ILI_IOLOCKED_ANY   (XFS_ILI_IOLOCKED_EXCL | XFS_ILI_IOLOCKED_SHARED)
 110
 111
 112 #ifdef __KERNEL__
 113
 114 struct xfs_buf;
 115 struct xfs_bmbt_rec_64;
 116 struct xfs_inode;
 117 struct xfs_mount;
 118
 119
 120 typedef struct xfs_inode_log_item {
 121         xfs_log_item_t          ili_item;          /* common portion */
 122         struct xfs_inode        *ili_inode;        /* inode ptr */
 123         xfs_lsn_t               ili_flush_lsn;     /* lsn at last flush */
 124         xfs_lsn_t               ili_last_lsn;      /* lsn at last transaction */
 125         unsigned short          ili_ilock_recur;   /* lock recursion count */
 126         unsigned short          ili_iolock_recur;  /* lock recursion count */
 127         unsigned short          ili_flags;         /* misc flags */
 128         unsigned short          ili_logged;        /* flushed logged data */
 129         unsigned int            ili_last_fields;   /* fields when flushed */
 130         struct xfs_bmbt_rec_64  *ili_extents_buf;  /* array of logged
 131                                                       data exts */
 132         struct xfs_bmbt_rec_64  *ili_aextents_buf; /* array of logged
 133                                                       attr exts */
 134         unsigned int            ili_pushbuf_flag;  /* one bit used in push_ail */
 135
 136 #ifdef DEBUG
 137         uint64_t                ili_push_owner;    /* one who sets pushbuf_flag
 138                                                       above gets to push the buf */
 139 #endif
 140 #ifdef XFS_TRANS_DEBUG
 141         int                     ili_root_size;
 142         char                    *ili_orig_root;
 143 #endif
 144         xfs_inode_log_format_t  ili_format;        /* logged structure */
 145 } xfs_inode_log_item_t;
 146
 147
 148 #define XFS_ILOG_FDATA(w)       xfs_ilog_fdata(w)
 149 static inline int xfs_ilog_fdata(int w)
 150 {
 151         return (w == XFS_DATA_FORK ? XFS_ILOG_DDATA : XFS_ILOG_ADATA);
 152 }
 153
 154 #endif  /* __KERNEL__ */
 155
 156 #define XFS_ILOG_FBROOT(w)      xfs_ilog_fbroot(w)
 157 static inline int xfs_ilog_fbroot(int w)
 158 {
 159         return (w == XFS_DATA_FORK ? XFS_ILOG_DBROOT : XFS_ILOG_ABROOT);
 160 }
 161
 162 #define XFS_ILOG_FEXT(w)        xfs_ilog_fext(w)
 163 static inline int xfs_ilog_fext(int w)
 164 {
 165         return (w == XFS_DATA_FORK ? XFS_ILOG_DEXT : XFS_ILOG_AEXT);
 166 }
 167
 168 #ifdef __KERNEL__
 169
 170 extern void xfs_inode_item_init(struct xfs_inode *, struct xfs_mount *);
 171 extern void xfs_inode_item_destroy(struct xfs_inode *);
 172 extern void xfs_iflush_done(struct xfs_buf *, xfs_inode_log_item_t *);
 173 extern void xfs_istale_done(struct xfs_buf *, xfs_inode_log_item_t *);
 174 extern void xfs_iflush_abort(struct xfs_inode *);
 175
 176 #endif  /* __KERNEL__ */
 177
 178 #endif  /* __XFS_INODE_ITEM_H__ */