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         unsigned short          ilf_type;       /* inode log item type */
  29         unsigned short          ilf_size;       /* size of this item */
  30         uint                    ilf_fields;     /* flags for fields logged */
  31         ushort                  ilf_asize;      /* size of attr d/ext/root */
  32         ushort                  ilf_dsize;      /* size of data/ext/root */
  33         xfs_ino_t               ilf_ino;        /* inode number */
  34         union {
  35                 xfs_dev_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         int                     ilf_len;        /* len of inode buffer */
  40         int                     ilf_boffset;    /* off of inode in buffer */
  41 } xfs_inode_log_format_t;
  42
  43 typedef struct xfs_inode_log_format_32 {
  44         unsigned short          ilf_type;       /* 16: inode log item type */
  45         unsigned short          ilf_size;       /* 16: size of this item */
  46         uint                    ilf_fields;     /* 32: flags for fields logged */
  47         ushort                  ilf_asize;      /* 32: size of attr d/ext/root */
  48         ushort                  ilf_dsize;      /* 32: size of data/ext/root */
  49         xfs_ino_t               ilf_ino;        /* 64: inode number */
  50         union {
  51                 xfs_dev_t       ilfu_rdev;      /* 32: rdev value for dev inode*/
  52                 uuid_t          ilfu_uuid;      /* 128: mount point value */
  53         } ilf_u;
  54         __int64_t               ilf_blkno;      /* 64: blkno of inode buffer */
  55         int                     ilf_len;        /* 32: len of inode buffer */
  56         int                     ilf_boffset;    /* 32: off of inode in buffer */
  57 } __attribute__((packed)) xfs_inode_log_format_32_t;
  58
  59 typedef struct xfs_inode_log_format_64 {
  60         unsigned short          ilf_type;       /* 16: inode log item type */
  61         unsigned short          ilf_size;       /* 16: size of this item */
  62         uint                    ilf_fields;     /* 32: flags for fields logged */
  63         ushort                  ilf_asize;      /* 32: size of attr d/ext/root */
  64         ushort                  ilf_dsize;      /* 32: size of data/ext/root */
  65         __uint32_t              ilf_pad;        /* 32: pad for 64 bit boundary */
  66         xfs_ino_t               ilf_ino;        /* 64: inode number */
  67         union {
  68                 xfs_dev_t       ilfu_rdev;      /* 32: rdev value for dev inode*/
  69                 uuid_t          ilfu_uuid;      /* 128: mount point value */
  70         } ilf_u;
  71         __int64_t               ilf_blkno;      /* 64: blkno of inode buffer */
  72         int                     ilf_len;        /* 32: len of inode buffer */
  73         int                     ilf_boffset;    /* 32: 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 #define XFS_ILOG_NONCORE        (XFS_ILOG_DDATA | XFS_ILOG_DEXT | \
  90                                  XFS_ILOG_DBROOT | XFS_ILOG_DEV | \
  91                                  XFS_ILOG_UUID | XFS_ILOG_ADATA | \
  92                                  XFS_ILOG_AEXT | XFS_ILOG_ABROOT)
  93
  94 #define XFS_ILOG_DFORK          (XFS_ILOG_DDATA | XFS_ILOG_DEXT | \
  95                                  XFS_ILOG_DBROOT)
  96
  97 #define XFS_ILOG_AFORK          (XFS_ILOG_ADATA | XFS_ILOG_AEXT | \
  98                                  XFS_ILOG_ABROOT)
  99
 100 #define XFS_ILOG_ALL            (XFS_ILOG_CORE | XFS_ILOG_DDATA | \
 101                                  XFS_ILOG_DEXT | XFS_ILOG_DBROOT | \
 102                                  XFS_ILOG_DEV | XFS_ILOG_UUID | \
 103                                  XFS_ILOG_ADATA | XFS_ILOG_AEXT | \
 104                                  XFS_ILOG_ABROOT)
 105
 106 #define XFS_ILI_HOLD            0x1
 107 #define XFS_ILI_IOLOCKED_EXCL   0x2
 108 #define XFS_ILI_IOLOCKED_SHARED 0x4
 109
 110 #define XFS_ILI_IOLOCKED_ANY   (XFS_ILI_IOLOCKED_EXCL | XFS_ILI_IOLOCKED_SHARED)
 111
 112
 113 #ifdef __KERNEL__
 114
 115 struct xfs_buf;
 116 struct xfs_bmbt_rec_64;
 117 struct xfs_inode;
 118 struct xfs_mount;
 119
 120
 121 typedef struct xfs_inode_log_item {
 122         xfs_log_item_t          ili_item;          /* common portion */
 123         struct xfs_inode        *ili_inode;        /* inode ptr */
 124         xfs_lsn_t               ili_flush_lsn;     /* lsn at last flush */
 125         xfs_lsn_t               ili_last_lsn;      /* lsn at last transaction */
 126         unsigned short          ili_ilock_recur;   /* lock recursion count */
 127         unsigned short          ili_iolock_recur;  /* lock recursion count */
 128         unsigned short          ili_flags;         /* misc flags */
 129         unsigned short          ili_logged;        /* flushed logged data */
 130         unsigned int            ili_last_fields;   /* fields when flushed */
 131         struct xfs_bmbt_rec_64  *ili_extents_buf;  /* array of logged
 132                                                       data exts */
 133         struct xfs_bmbt_rec_64  *ili_aextents_buf; /* array of logged
 134                                                       attr exts */
 135         unsigned int            ili_pushbuf_flag;  /* one bit used in push_ail */
 136
 137 #ifdef DEBUG
 138         uint64_t                ili_push_owner;    /* one who sets pushbuf_flag
 139                                                       above gets to push the buf */
 140 #endif
 141 #ifdef XFS_TRANS_DEBUG
 142         int                     ili_root_size;
 143         char                    *ili_orig_root;
 144 #endif
 145         xfs_inode_log_format_t  ili_format;        /* logged structure */
 146 } xfs_inode_log_item_t;
 147
 148
 149 #define XFS_ILOG_FDATA(w)       xfs_ilog_fdata(w)
 150 static inline int xfs_ilog_fdata(int w)
 151 {
 152         return (w == XFS_DATA_FORK ? XFS_ILOG_DDATA : XFS_ILOG_ADATA);
 153 }
 154
 155 #endif  /* __KERNEL__ */
 156
 157 #define XFS_ILOG_FBROOT(w)      xfs_ilog_fbroot(w)
 158 static inline int xfs_ilog_fbroot(int w)
 159 {
 160         return (w == XFS_DATA_FORK ? XFS_ILOG_DBROOT : XFS_ILOG_ABROOT);
 161 }
 162
 163 #define XFS_ILOG_FEXT(w)        xfs_ilog_fext(w)
 164 static inline int xfs_ilog_fext(int w)
 165 {
 166         return (w == XFS_DATA_FORK ? XFS_ILOG_DEXT : XFS_ILOG_AEXT);
 167 }
 168
 169 #ifdef __KERNEL__
 170
 171 extern void xfs_inode_item_init(struct xfs_inode *, struct xfs_mount *);
 172 extern void xfs_inode_item_destroy(struct xfs_inode *);
 173 extern void xfs_iflush_done(struct xfs_buf *, xfs_inode_log_item_t *);
 174 extern void xfs_istale_done(struct xfs_buf *, xfs_inode_log_item_t *);
 175 extern void xfs_iflush_abort(struct xfs_inode *);
 176 extern int xfs_inode_item_format_convert(xfs_log_iovec_t *,
 177                                          xfs_inode_log_format_t *);
 178
 179 #endif  /* __KERNEL__ */
 180
 181 #endif  /* __XFS_INODE_ITEM_H__ */