/*

   * Copyright (c) 2000-2005 Silicon Graphics, Inc.
   * All Rights Reserved.

   *

   * This program is free software; you can redistribute it and/or
   * modify it under the terms of the GNU General Public License as

   * published by the Free Software Foundation.
   *

   * This program is distributed in the hope that it would be useful,
   * but WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   * GNU General Public License for more details.

   *

   * You should have received a copy of the GNU General Public License
   * along with this program; if not, write the Free Software Foundation,
   * Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA

   */
  #include "xfs.h"

  #include "xfs_fs.h"

  #include "xfs_types.h"

  #include "xfs_log.h"

  #include "xfs_inum.h"

  #include "xfs_trans.h"
  #include "xfs_sb.h"
  #include "xfs_ag.h"

  #include "xfs_dir2.h"
  #include "xfs_dmapi.h"
  #include "xfs_mount.h"

  #include "xfs_quota.h"
  #include "xfs_error.h"

  
  STATIC struct xfs_dquot *
  xfs_dqvopchown_default(
  	struct xfs_trans	*tp,
  	struct xfs_inode	*ip,
  	struct xfs_dquot	**dqp,
  	struct xfs_dquot	*dq)
  {
  	return NULL;
  }

  /*
   * Clear the quotaflags in memory and in the superblock.
   */
  int
  xfs_mount_reset_sbqflags(xfs_mount_t *mp)
  {
  	int			error;
  	xfs_trans_t		*tp;
  	unsigned long		s;
  
  	mp->m_qflags = 0;
  	/*
  	 * It is OK to look at sb_qflags here in mount path,
  	 * without SB_LOCK.
  	 */
  	if (mp->m_sb.sb_qflags == 0)
  		return 0;
  	s = XFS_SB_LOCK(mp);
  	mp->m_sb.sb_qflags = 0;
  	XFS_SB_UNLOCK(mp, s);
  
  	/*
  	 * if the fs is readonly, let the incore superblock run
  	 * with quotas off but don't flush the update out to disk
  	 */
  	if (XFS_MTOVFS(mp)->vfs_flag & VFS_RDONLY)
  		return 0;
  #ifdef QUOTADEBUG
  	xfs_fs_cmn_err(CE_NOTE, mp, "Writing superblock quota changes");
  #endif
  	tp = xfs_trans_alloc(mp, XFS_TRANS_QM_SBCHANGE);
  	if ((error = xfs_trans_reserve(tp, 0, mp->m_sb.sb_sectsize + 128, 0, 0,
  				      XFS_DEFAULT_LOG_COUNT))) {
  		xfs_trans_cancel(tp, 0);
  		xfs_fs_cmn_err(CE_ALERT, mp,
  			"xfs_mount_reset_sbqflags: Superblock update failed!");
  		return error;
  	}
  	xfs_mod_sb(tp, XFS_SB_QFLAGS);

  	error = xfs_trans_commit(tp, 0);

  	return error;
  }
  
  STATIC int
  xfs_noquota_init(
  	xfs_mount_t	*mp,
  	uint		*needquotamount,
  	uint		*quotaflags)
  {
  	int		error = 0;
  
  	*quotaflags = 0;
  	*needquotamount = B_FALSE;
  
  	ASSERT(!XFS_IS_QUOTA_ON(mp));
  
  	/*
  	 * If a file system had quotas running earlier, but decided to
  	 * mount without -o uquota/pquota/gquota options, revoke the
  	 * quotachecked license.
  	 */
  	if (mp->m_sb.sb_qflags & XFS_ALL_QUOTA_ACCT) {
  		cmn_err(CE_NOTE,
                          "XFS resetting qflags for filesystem %s",
                          mp->m_fsname);
  
  		error = xfs_mount_reset_sbqflags(mp);
  	}
  	return error;
  }

  xfs_qmops_t	xfs_qmcore_stub = {

  	.xfs_qminit		= (xfs_qminit_t) xfs_noquota_init,

  	.xfs_qmdone		= (xfs_qmdone_t) fs_noerr,
  	.xfs_qmmount		= (xfs_qmmount_t) fs_noerr,
  	.xfs_qmunmount		= (xfs_qmunmount_t) fs_noerr,
  	.xfs_dqrele		= (xfs_dqrele_t) fs_noerr,
  	.xfs_dqattach		= (xfs_dqattach_t) fs_noerr,
  	.xfs_dqdetach		= (xfs_dqdetach_t) fs_noerr,
  	.xfs_dqpurgeall		= (xfs_dqpurgeall_t) fs_noerr,
  	.xfs_dqvopalloc		= (xfs_dqvopalloc_t) fs_noerr,
  	.xfs_dqvopcreate	= (xfs_dqvopcreate_t) fs_noerr,
  	.xfs_dqvoprename	= (xfs_dqvoprename_t) fs_noerr,
  	.xfs_dqvopchown		= xfs_dqvopchown_default,
  	.xfs_dqvopchownresv	= (xfs_dqvopchownresv_t) fs_noerr,
  };