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Separate the quota source into its own subdirectory ala dmapi.
Push a bunch of quota- and dmapi-specific code down into these
subdirs which previously was compiled into the core XFS code,
and don't descend into these subdirs if options config'd off.
Separate the quota source into its own subdirectory ala dmapi.
Push a bunch of quota- and dmapi-specific code down into these
subdirs which previously was compiled into the core XFS code,
and don't descend into these subdirs if options config'd off.

/*
 * Copyright (c) 2000-2003 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_DMAPI_H__
#define __XFS_DMAPI_H__

/*	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_"

typedef enum {
	DM_EVENT_INVALID	= -1,
	DM_EVENT_CANCEL		= 0,		/* not supported */
	DM_EVENT_MOUNT		= 1,
	DM_EVENT_PREUNMOUNT	= 2,
	DM_EVENT_UNMOUNT	= 3,
	DM_EVENT_DEBUT		= 4,		/* not supported */
	DM_EVENT_CREATE		= 5,
	DM_EVENT_CLOSE		= 6,		/* not supported */
	DM_EVENT_POSTCREATE	= 7,
	DM_EVENT_REMOVE		= 8,
	DM_EVENT_POSTREMOVE	= 9,
	DM_EVENT_RENAME		= 10,
	DM_EVENT_POSTRENAME	= 11,
	DM_EVENT_LINK		= 12,
	DM_EVENT_POSTLINK	= 13,
	DM_EVENT_SYMLINK	= 14,
	DM_EVENT_POSTSYMLINK	= 15,
	DM_EVENT_READ		= 16,
	DM_EVENT_WRITE		= 17,
	DM_EVENT_TRUNCATE	= 18,
	DM_EVENT_ATTRIBUTE	= 19,
	DM_EVENT_DESTROY	= 20,
	DM_EVENT_NOSPACE	= 21,
	DM_EVENT_USER		= 22,
	DM_EVENT_MAX		= 23
} dm_eventtype_t;
#define HAVE_DM_EVENTTYPE_T

typedef enum {
	DM_RIGHT_NULL,
	DM_RIGHT_SHARED,
	DM_RIGHT_EXCL
} dm_right_t;
#define HAVE_DM_RIGHT_T

/* Defines for determining if an event message should be sent. */
#define DM_EVENT_ENABLED(vfsp, ip, event) ( \
	unlikely ((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) ( \
	unlikely ((vfsp)->vfs_flag & VFS_DMI) && \
		( ((io)->io_dmevmask & (1 << event)) || \

#define DM_XFS_VALID_FS_EVENTS		( \
	(1 << DM_EVENT_PREUNMOUNT)	| \
	(1 << DM_EVENT_UNMOUNT)		| \
	(1 << DM_EVENT_NOSPACE)		| \
	(1 << DM_EVENT_DEBUT)		| \
	(1 << DM_EVENT_CREATE)		| \
	(1 << DM_EVENT_POSTCREATE)	| \
	(1 << DM_EVENT_REMOVE)		| \
	(1 << DM_EVENT_POSTREMOVE)	| \
	(1 << DM_EVENT_RENAME)		| \
	(1 << DM_EVENT_POSTRENAME)	| \
	(1 << DM_EVENT_LINK)		| \
	(1 << DM_EVENT_POSTLINK)	| \
	(1 << DM_EVENT_SYMLINK)		| \
	(1 << DM_EVENT_POSTSYMLINK)	| \
	(1 << DM_EVENT_ATTRIBUTE)	| \
	(1 << DM_EVENT_DESTROY)		)

/* Events valid in dm_set_eventlist() when called with a file handle for
   a regular file or a symlink.	 These events are persistent.
*/

#define DM_XFS_VALID_FILE_EVENTS	( \
	(1 << DM_EVENT_ATTRIBUTE)	| \
	(1 << DM_EVENT_DESTROY)		)

/* Events valid in dm_set_eventlist() when called with a file handle for
   a directory.	 These events are persistent.
*/

#define DM_XFS_VALID_DIRECTORY_EVENTS	( \
	(1 << DM_EVENT_CREATE)		| \
	(1 << DM_EVENT_POSTCREATE)	| \
	(1 << DM_EVENT_REMOVE)		| \
	(1 << DM_EVENT_POSTREMOVE)	| \
	(1 << DM_EVENT_RENAME)		| \
	(1 << DM_EVENT_POSTRENAME)	| \
	(1 << DM_EVENT_LINK)		| \
	(1 << DM_EVENT_POSTLINK)	| \
	(1 << DM_EVENT_SYMLINK)		| \
	(1 << DM_EVENT_POSTSYMLINK)	| \
	(1 << DM_EVENT_ATTRIBUTE)	| \
	(1 << DM_EVENT_DESTROY)		)

/* Events supported by the XFS filesystem. */
#define DM_XFS_SUPPORTED_EVENTS		( \
	(1 << DM_EVENT_MOUNT)		| \
	(1 << DM_EVENT_PREUNMOUNT)	| \
	(1 << DM_EVENT_UNMOUNT)		| \
	(1 << DM_EVENT_NOSPACE)		| \
	(1 << DM_EVENT_CREATE)		| \
	(1 << DM_EVENT_POSTCREATE)	| \
	(1 << DM_EVENT_REMOVE)		| \
	(1 << DM_EVENT_POSTREMOVE)	| \
	(1 << DM_EVENT_RENAME)		| \
	(1 << DM_EVENT_POSTRENAME)	| \
	(1 << DM_EVENT_LINK)		| \
	(1 << DM_EVENT_POSTLINK)	| \
	(1 << DM_EVENT_SYMLINK)		| \
	(1 << DM_EVENT_POSTSYMLINK)	| \
	(1 << DM_EVENT_READ)		| \
	(1 << DM_EVENT_WRITE)		| \
	(1 << DM_EVENT_TRUNCATE)	| \
	(1 << DM_EVENT_ATTRIBUTE)	| \
	(1 << DM_EVENT_DESTROY)		)


/*
 *	Definitions used for the flags field on dm_send_*_event().
 */

#define DM_FLAGS_NDELAY		0x001	/* return EAGAIN after dm_pending() */
#define DM_FLAGS_UNWANTED	0x002	/* event not in fsys dm_eventset_t */

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

#define FILP_DELAY_FLAG(filp) ((filp->f_flags&(O_NDELAY|O_NONBLOCK)) ? \
			DM_FLAGS_NDELAY : 0)
#define AT_DELAY_FLAG(f) ((f&ATTR_NONBLOCK) ? DM_FLAGS_NDELAY : 0)

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

#define FILP_DELAY_FLAG(filp) ((filp->f_flags&(O_NDELAY|O_NONBLOCK)) ? \
			DM_FLAGS_NDELAY : 0)


extern struct bhv_vfsops xfs_dmops;

extern void xfs_dm_init(void);
extern void xfs_dm_exit(void);

#endif	/* __XFS_DMAPI_H__ */