fs/xfs/xfs_iocore.c

   1 /*
   2  * Copyright (c) 2000-2003 Silicon Graphics, Inc.  All Rights Reserved.
   3  *
   4  * This program is free software; you can redistribute it and/or modify it
   5  * under the terms of version 2 of the GNU General Public License as
   6  * published by the Free Software Foundation.
   7  *
   8  * This program is distributed in the hope that it would be useful, but
   9  * WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  11  *
  12  * Further, this software is distributed without any warranty that it is
  13  * free of the rightful claim of any third person regarding infringement
  14  * or the like.  Any license provided herein, whether implied or
  15  * otherwise, applies only to this software file.  Patent licenses, if
  16  * any, provided herein do not apply to combinations of this program with
  17  * other software, or any other product whatsoever.
  18  *
  19  * You should have received a copy of the GNU General Public License along
  20  * with this program; if not, write the Free Software Foundation, Inc., 59
  21  * Temple Place - Suite 330, Boston MA 02111-1307, USA.
  22  *
  23  * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
  24  * Mountain View, CA  94043, or:
  25  *
  26  * http://www.sgi.com
  27  *
  28  * For further information regarding this notice, see:
  29  *
  30  * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
  31  */
  32
  33 #include "xfs.h"
  34 #include "xfs_macros.h"
  35 #include "xfs_types.h"
  36 #include "xfs_inum.h"
  37 #include "xfs_log.h"
  38 #include "xfs_trans.h"
  39 #include "xfs_sb.h"
  40 #include "xfs_ag.h"
  41 #include "xfs_dir.h"
  42 #include "xfs_dir2.h"
  43 #include "xfs_dmapi.h"
  44 #include "xfs_mount.h"
  45 #include "xfs_alloc_btree.h"
  46 #include "xfs_bmap_btree.h"
  47 #include "xfs_ialloc_btree.h"
  48 #include "xfs_itable.h"
  49 #include "xfs_btree.h"
  50 #include "xfs_alloc.h"
  51 #include "xfs_ialloc.h"
  52 #include "xfs_attr_sf.h"
  53 #include "xfs_dir_sf.h"
  54 #include "xfs_dir2_sf.h"
  55 #include "xfs_dinode.h"
  56 #include "xfs_inode_item.h"
  57 #include "xfs_inode.h"
  58 #include "xfs_bmap.h"
  59 #include "xfs_error.h"
  60 #include "xfs_bit.h"
  61 #include "xfs_rw.h"
  62 #include "xfs_quota.h"
  63 #include "xfs_trans_space.h"
  64 #include "xfs_iomap.h"
  65
  66
  67 STATIC xfs_fsize_t
  68 xfs_size_fn(
  69         xfs_inode_t             *ip)
  70 {
  71         return (ip->i_d.di_size);
  72 }
  73
  74 STATIC int
  75 xfs_ioinit(
  76         struct vfs              *vfsp,
  77         struct xfs_mount_args   *mntargs,
  78         int                     flags)
  79 {
  80         return xfs_mountfs(vfsp, XFS_VFSTOM(vfsp), flags);
  81 }
  82
  83 xfs_ioops_t     xfs_iocore_xfs = {
  84         .xfs_ioinit             = (xfs_ioinit_t) xfs_ioinit,
  85         .xfs_bmapi_func         = (xfs_bmapi_t) xfs_bmapi,
  86         .xfs_bmap_eof_func      = (xfs_bmap_eof_t) xfs_bmap_eof,
  87         .xfs_iomap_write_direct =
  88                         (xfs_iomap_write_direct_t) xfs_iomap_write_direct,
  89         .xfs_iomap_write_delay =
  90                         (xfs_iomap_write_delay_t) xfs_iomap_write_delay,
  91         .xfs_iomap_write_allocate =
  92                         (xfs_iomap_write_allocate_t) xfs_iomap_write_allocate,
  93         .xfs_iomap_write_unwritten =
  94                         (xfs_iomap_write_unwritten_t) xfs_iomap_write_unwritten,
  95         .xfs_ilock              = (xfs_lock_t) xfs_ilock,
  96         .xfs_lck_map_shared     = (xfs_lck_map_shared_t) xfs_ilock_map_shared,
  97         .xfs_ilock_demote       = (xfs_lock_demote_t) xfs_ilock_demote,
  98         .xfs_ilock_nowait       = (xfs_lock_nowait_t) xfs_ilock_nowait,
  99         .xfs_unlock             = (xfs_unlk_t) xfs_iunlock,
 100         .xfs_size_func          = (xfs_size_t) xfs_size_fn,
 101         .xfs_iodone             = (xfs_iodone_t) fs_noerr,
 102 };
 103
 104 void
 105 xfs_iocore_inode_reinit(
 106         xfs_inode_t     *ip)
 107 {
 108         xfs_iocore_t    *io = &ip->i_iocore;
 109
 110         io->io_flags = 0;
 111         if (ip->i_d.di_flags & XFS_DIFLAG_REALTIME)
 112                 io->io_flags |= XFS_IOCORE_RT;
 113         io->io_dmevmask = ip->i_d.di_dmevmask;
 114         io->io_dmstate = ip->i_d.di_dmstate;
 115 }
 116
 117 void
 118 xfs_iocore_inode_init(
 119         xfs_inode_t     *ip)
 120 {
 121         xfs_iocore_t    *io = &ip->i_iocore;
 122         xfs_mount_t     *mp = ip->i_mount;
 123
 124         io->io_mount = mp;
 125 #ifdef DEBUG
 126         io->io_lock = &ip->i_lock;
 127         io->io_iolock = &ip->i_iolock;
 128 #endif
 129
 130         io->io_obj = (void *)ip;
 131
 132         xfs_iocore_inode_reinit(ip);
 133 }