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Encumbrance review done.  Add copyright and license words consistent with GPL.

/*
 * Copyright (C) 1999 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 Fondation.
 * 
 * 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, any license provided herein,
 * whether implied or otherwise, is limited to this program in accordance with
 * the express provisions of the GNU General Public License.  Patent licenses,
 * if any, provided herein do not apply to combinations of this program with
 * other product or programs, or any other product whatsoever.  This program is
 * distributed without any warranty that the program is delivered free of the
 * rightful claim of any third person by way of infringement or the like.  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., 59 Temple
 * Place - Suite 330, Boston MA 02111-1307, USA.
 */
#ifndef _FS_XFS_DMAPI_H
#define _FS_XFS_DMAPI_H

#ident  "$Revision: 1.4 $"

/*	Values used to define the on-disk version of dm_attrname_t. All
 *	on-disk attribute names start with the 8-byte string "SGI_DMI_".
 *
 *      In the on-disk inode, DMAPI attribute names consist of the user-provided
 *      name with the DMATTR_PREFIXSTRING pre-pended.  This string must NEVER be
 *      changed.
 */

#define DMATTR_PREFIXLEN	8
#define DMATTR_PREFIXSTRING	"SGI_DMI_"

#ifdef	_KERNEL
/* Defines for determining if an event message should be sent. */
#define	DM_EVENT_ENABLED(vfsp, ip, event) ( \
	((vfsp)->vfs_flag & VFS_DMI) && \
		( ((ip)->i_d.di_dmevmask & (1 << event)) || \
		  ((ip)->i_mount->m_dmevmask & (1 << event)) ) \
	)

#define	DM_EVENT_ENABLED_IO(vfsp, io, event) ( \
	((vfsp)->vfs_flag & VFS_DMI) && \
		( ((io)->io_dmevmask & (1 << event)) || \
		  ((io)->io_mount->m_dmevmask & (1 << event)) ) \
	)

/*
 *	Macros to turn caller specified delay/block flags into
 *	dm_send_xxxx_event flag DM_FLAGS_NDELAY.
 */

#define	UIO_DELAY_FLAG(uiop) ((uiop->uio_fmode&(FNDELAY|FNONBLOCK)) ? \
			DM_FLAGS_NDELAY : 0)
#define AT_DELAY_FLAG(f) ((f&ATTR_NONBLOCK) ? DM_FLAGS_NDELAY : 0)


extern int
xfs_dm_send_data_event(
	dm_eventtype_t	event, 
	bhv_desc_t	*bdp,
	off_t		offset,
	size_t		length, 
	int		flags,
	vrwlock_t	*locktype);

extern int
xfs_dm_send_create_event(
	bhv_desc_t	*dir_bdp,
	char		*name,
	mode_t		new_mode,
	int		*good_event_sent);

extern int
xfs_dm_fcntl(
	bhv_desc_t	*bdp,
	void		*arg,
	int		flags,
	off_t		offset,
	cred_t		*credp,
	union rval	*rvalp);

extern int
xfs_dm_map(
	bhv_desc_t	*bdp,
        off_t           offset,
        size_t          length,
        dm_eventtype_t  max_event);

/*
 *	Function defined in xfs_vnodeops.c used by DMAPI as well as by xfs_vnodeops.c
 */
extern int
xfs_set_dmattrs(
        bhv_desc_t      *bdp,
        u_int           evmask,
        u_int16_t       state,
        cred_t          *credp);

#endif	/* _KERNEL */

#endif  /* _FS_XFS_DMAPI_H */