fs/xfs/libxfs/xfs_metafile.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  * Copyright (c) 2018-2024 Oracle.  All Rights Reserved.
   4  * Author: Darrick J. Wong <djwong@kernel.org>
   5  */
   6 #include "xfs.h"
   7 #include "xfs_fs.h"
   8 #include "xfs_shared.h"
   9 #include "xfs_format.h"
  10 #include "xfs_log_format.h"
  11 #include "xfs_trans_resv.h"
  12 #include "xfs_bit.h"
  13 #include "xfs_sb.h"
  14 #include "xfs_mount.h"
  15 #include "xfs_defer.h"
  16 #include "xfs_trans.h"
  17 #include "xfs_metafile.h"
  18 #include "xfs_trace.h"
  19 #include "xfs_inode.h"
  20
  21 /* Set up an inode to be recognized as a metadata directory inode. */
  22 void
  23 xfs_metafile_set_iflag(
  24         struct xfs_trans        *tp,
  25         struct xfs_inode        *ip,
  26         enum xfs_metafile_type  metafile_type)
  27 {
  28         VFS_I(ip)->i_mode &= ~0777;
  29         VFS_I(ip)->i_uid = GLOBAL_ROOT_UID;
  30         VFS_I(ip)->i_gid = GLOBAL_ROOT_GID;
  31         if (S_ISDIR(VFS_I(ip)->i_mode))
  32                 ip->i_diflags |= XFS_METADIR_DIFLAGS;
  33         else
  34                 ip->i_diflags |= XFS_METAFILE_DIFLAGS;
  35         ip->i_diflags2 &= ~XFS_DIFLAG2_DAX;
  36         ip->i_diflags2 |= XFS_DIFLAG2_METADATA;
  37         ip->i_metatype = metafile_type;
  38         xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
  39 }
  40
  41 /* Clear the metadata directory inode flag. */
  42 void
  43 xfs_metafile_clear_iflag(
  44         struct xfs_trans        *tp,
  45         struct xfs_inode        *ip)
  46 {
  47         ASSERT(xfs_is_metadir_inode(ip));
  48         ASSERT(VFS_I(ip)->i_nlink == 0);
  49
  50         ip->i_diflags2 &= ~XFS_DIFLAG2_METADATA;
  51         xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
  52 }