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/*
* Copyright (c) 2000 Silicon Graphics, Inc. All Rights Reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of version 2 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.
*
* Further, this software is distributed without any warranty that it is
* free of the rightful claim of any third person regarding infringement
* or the like. Any license provided herein, whether implied or
* otherwise, applies only to this software file. Patent licenses, if
* any, provided herein do not apply to combinations of this program with
* other software, or any other product whatsoever.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write the Free Software Foundation, Inc., 59
* Temple Place - Suite 330, Boston MA 02111-1307, USA.
*
* Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
* Mountain View, CA 94043, or:
*
* http://www.sgi.com
*
* For further information regarding this notice, see:
*
* http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
*/
#ifndef __XFS_LRW_H__
#define __XFS_LRW_H__
#define XFS_IOMAP_READ_ENTER 3
/*
* Maximum count of bmaps used by read and write paths.
*/
#define XFS_MAX_RW_NBMAPS 4
extern int xfs_bmap (bhv_desc_t *, xfs_off_t, ssize_t, int, struct cred *, pb_bmap_t *, int *);
extern int xfs_strategy (bhv_desc_t *, xfs_off_t, ssize_t, int, struct cred *, pb_bmap_t *, int *);
extern int xfsbdstrat (struct xfs_mount *, struct xfs_buf *);
extern int xfs_bdstrat_cb (struct xfs_buf *);
extern int xfs_zero_eof (vnode_t *, struct xfs_iocore *, xfs_off_t,
xfs_fsize_t, xfs_fsize_t, struct pm *);
extern ssize_t xfs_read (
struct bhv_desc *bdp,
struct uio *uiop,
int ioflag,
struct cred *credp,
struct flid *fl);
extern ssize_t xfs_write (
struct bhv_desc *bdp,
struct uio *uiop,
int ioflag,
struct cred *credp,
struct flid *fl);
extern int xfs_recover_read_only (xlog_t *);
extern int xfs_quotacheck_read_only (xfs_mount_t *);
extern void XFS_log_write_unmount_ro (bhv_desc_t *);
#define XFS_FSB_TO_DB_IO(io,fsb) \
(((io)->io_flags & XFS_IOCORE_RT) ? \
XFS_FSB_TO_BB((io)->io_mount, (fsb)) : \
XFS_FSB_TO_DADDR((io)->io_mount, (fsb)))
#endif /* __XFS_LRW_H__ */
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