fs/xfs/xfs_imap.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_IMAP_H__
  19 #define __XFS_IMAP_H__
  20
  21 /*
  22  * This is the structure passed to xfs_imap() to map
  23  * an inode number to its on disk location.
  24  */
  25 typedef struct xfs_imap {
  26         xfs_daddr_t     im_blkno;       /* starting BB of inode chunk */
  27         uint            im_len;         /* length in BBs of inode chunk */
  28         xfs_agblock_t   im_agblkno;     /* logical block of inode chunk in ag */
  29         ushort          im_ioffset;     /* inode offset in block in "inodes" */
  30         ushort          im_boffset;     /* inode offset in block in bytes */
  31 } xfs_imap_t;
  32
  33 #ifdef __KERNEL__
  34 struct xfs_mount;
  35 struct xfs_trans;
  36 int     xfs_imap(struct xfs_mount *, struct xfs_trans *, xfs_ino_t,
  37                  xfs_imap_t *, uint);
  38 #endif
  39
  40 #endif  /* __XFS_IMAP_H__ */