xref: /freebsd-9.3-release/sys/gnu/fs/xfs/FreeBSD/xfs_vnode.h

/*
 * 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/
 *
 * Portions Copyright (c) 1989, 1993
 *	The Regents of the University of California.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */
#ifndef __XFS_VNODE_H__
#define __XFS_VNODE_H__

#include <sys/vnode.h>
#include <sys/namei.h>

struct  xfs_iomap;
typedef struct componentname vname_t;
typedef bhv_head_t vn_bhv_head_t;

/*
 * MP locking protocols:
 *	v_flag, v_vfsp				VN_LOCK/VN_UNLOCK
 *	v_type					read-only or fs-dependent
 */
typedef struct xfs_vnode {
	__u32		v_flag;			/* vnode flags (see below) */
	struct xfs_vfs	*v_vfsp;		/* ptr to containing VFS */
	xfs_ino_t	v_number;		/* in-core vnode number */
	vn_bhv_head_t	v_bh;			/* behavior head */
	struct vnode	*v_vnode;		/* FreeBSD vnode */
	struct xfs_inode *v_inode;		/* XFS inode */
#ifdef XFS_VNODE_TRACE
	struct ktrace	*v_trace;		/* trace header structure    */
#endif
} xfs_vnode_t;


/* vnode types */
#define VN_ISLNK(vp)	((vp)->v_vnode->v_type & VLNK)
#define VN_ISREG(vp)	((vp)->v_vnode->v_type & VREG)
#define VN_ISDIR(vp)	((vp)->v_vnode->v_type & VDIR)
#define VN_ISCHR(vp)	((vp)->v_vnode->v_type & VCHR)
#define VN_ISBLK(vp)	((vp)->v_vnode->v_type & VBLK)
#define VN_BAD(vp)	((vp)->v_vnode->v_type & VBAD)

#define v_fbhv			v_bh.bh_first	       /* first behavior */
#define v_fops			v_bh.bh_first->bd_ops  /* first behavior ops */

#define VNODE_POSITION_BASE	BHV_POSITION_BASE	/* chain bottom */
#define VNODE_POSITION_TOP	BHV_POSITION_TOP	/* chain top */
#define VNODE_POSITION_INVALID	BHV_POSITION_INVALID	/* invalid pos. num */

typedef enum {
	VN_BHV_UNKNOWN,		/* not specified */
	VN_BHV_XFS,		/* xfs */
	VN_BHV_DM,		/* data migration */
	VN_BHV_QM,		/* quota manager */
	VN_BHV_IO,		/* IO path */
	VN_BHV_END		/* housekeeping end-of-range */
} vn_bhv_t;

#define VNODE_POSITION_XFS	(VNODE_POSITION_BASE)
#define VNODE_POSITION_DM	(VNODE_POSITION_BASE+10)
#define VNODE_POSITION_QM	(VNODE_POSITION_BASE+20)
#define VNODE_POSITION_IO	(VNODE_POSITION_BASE+30)

#define	VPTOXFSVP(vp) ((struct xfs_vnode *)(vp)->v_data)

/*
 * Macros for dealing with the behavior descriptor inside of the vnode.
 */
#define BHV_TO_VNODE(bdp)	((xfs_vnode_t *)BHV_VOBJ(bdp))
#define BHV_TO_VNODE_NULL(bdp)	((xfs_vnode_t *)BHV_VOBJNULL(bdp))

#define VN_BHV_HEAD(vp)			((bhv_head_t *)(&((vp)->v_bh)))
#define vn_bhv_head_init(bhp,name)	bhv_head_init(bhp,name)
#define vn_bhv_remove(bhp,bdp)		bhv_remove(bhp,bdp)
#define vn_bhv_lookup(bhp,ops)		bhv_lookup(bhp,ops)
#define vn_bhv_lookup_unlocked(bhp,ops) bhv_lookup_unlocked(bhp,ops)

/*
 * Vnode to Linux inode mapping.
 */
#define LINVFS_GET_VP(inode)	((xfs_vnode_t *)NULL)
#define LINVFS_GET_IP(vp)	((xfs_inode_t *)NULL)

/*
 * Vnode flags.
 */
#define VINACT		       0x1	/* vnode is being inactivated	*/
#define VRECLM		       0x2	/* vnode is being reclaimed	*/
#define VWAIT		       0x4	/* waiting for VINACT/VRECLM to end */
#define VMODIFIED	       0x8	/* XFS inode state possibly differs */
					/* to the Linux inode state.	*/

/*
 * Values for the VOP_RWLOCK and VOP_RWUNLOCK flags parameter.
 */
typedef enum vrwlock {
	VRWLOCK_NONE,
	VRWLOCK_READ,
	VRWLOCK_WRITE,
	VRWLOCK_WRITE_DIRECT,
	VRWLOCK_TRY_READ,
	VRWLOCK_TRY_WRITE
} vrwlock_t;

/*
 * Return values for VOP_INACTIVE.  A return value of
 * VN_INACTIVE_NOCACHE implies that the file system behavior
 * has disassociated its state and bhv_desc_t from the vnode.
 */
#define	VN_INACTIVE_CACHE	0
#define	VN_INACTIVE_NOCACHE	1

/*
 * Values for the cmd code given to VOP_VNODE_CHANGE.
 */
typedef enum vchange {
	VCHANGE_FLAGS_FRLOCKS		= 0,
	VCHANGE_FLAGS_ENF_LOCKING	= 1,
	VCHANGE_FLAGS_TRUNCATED		= 2,
	VCHANGE_FLAGS_PAGE_DIRTY	= 3,
	VCHANGE_FLAGS_IOEXCL_COUNT	= 4
} vchange_t;

struct file_lock;
struct xfs_iomap_s;
struct xfs_vattr;
struct attrlist_cursor_kern;

typedef int	(*xfs_vop_open_t)(bhv_desc_t *, struct cred *);
typedef ssize_t (*xfs_vop_read_t)(bhv_desc_t *, uio_t *, int, struct cred *);
typedef ssize_t (*xfs_vop_write_t)(bhv_desc_t *, uio_t *, int, struct cred *);
typedef int	(*xfs_vop_ioctl_t)(bhv_desc_t *, struct inode *, struct file *,
				int, u_long, void *);
typedef int	(*xfs_vop_getattr_t)(bhv_desc_t *, struct xfs_vattr *, int,
				struct cred *);
typedef int	(*xfs_vop_setattr_t)(bhv_desc_t *, struct xfs_vattr *, int,
				struct cred *);
typedef int	(*xfs_vop_access_t)(bhv_desc_t *, int, struct cred *);
typedef int	(*xfs_vop_lookup_t)(bhv_desc_t *, vname_t *, xfs_vnode_t **,
				int, xfs_vnode_t *, struct cred *);
typedef int	(*xfs_vop_create_t)(bhv_desc_t *, vname_t *, struct xfs_vattr *,
				xfs_vnode_t **, struct cred *);
typedef int	(*xfs_vop_remove_t)(bhv_desc_t *, bhv_desc_t *, vname_t *, struct cred *);
typedef int	(*xfs_vop_link_t)(bhv_desc_t *, xfs_vnode_t *, vname_t *,
				struct cred *);
typedef int	(*xfs_vop_rename_t)(bhv_desc_t *, vname_t *, xfs_vnode_t *, vname_t *,
				struct cred *);
typedef int	(*xfs_vop_mkdir_t)(bhv_desc_t *, vname_t *, struct xfs_vattr *,
				xfs_vnode_t **, struct cred *);
typedef int	(*xfs_vop_rmdir_t)(bhv_desc_t *, vname_t *, struct cred *);
typedef int	(*xfs_vop_readdir_t)(bhv_desc_t *, struct uio *, struct cred *,
				int *);
typedef int	(*xfs_vop_symlink_t)(bhv_desc_t *, vname_t *, struct xfs_vattr *,
				char *, xfs_vnode_t **, struct cred *);

typedef int	(*xfs_vop_readlink_t)(bhv_desc_t *, struct uio *, int,
				struct cred *);
typedef int	(*xfs_vop_fsync_t)(bhv_desc_t *, int, struct cred *,
				xfs_off_t, xfs_off_t);
typedef int	(*xfs_vop_inactive_t)(bhv_desc_t *, struct cred *);
typedef int	(*xfs_vop_fid2_t)(bhv_desc_t *, struct fid *);
typedef int	(*xfs_vop_release_t)(bhv_desc_t *);
typedef int	(*xfs_vop_rwlock_t)(bhv_desc_t *, vrwlock_t);
typedef void	(*xfs_vop_rwunlock_t)(bhv_desc_t *, vrwlock_t);
typedef	int	(*xfs_vop_frlock_t)(bhv_desc_t *, int, struct file_lock *,int,
				xfs_off_t, struct cred *);
typedef int	(*xfs_vop_bmap_t)(bhv_desc_t *, xfs_off_t, ssize_t, int,
				struct xfs_iomap *, int *);
typedef int	(*xfs_vop_reclaim_t)(bhv_desc_t *);
typedef int	(*xfs_vop_attr_get_t)(bhv_desc_t *, const char *, char *, int *, int,
				struct cred *);
typedef	int	(*xfs_vop_attr_set_t)(bhv_desc_t *, const char *, char *, int, int,
				struct cred *);
typedef	int	(*xfs_vop_attr_remove_t)(bhv_desc_t *, const char *, int, struct cred *);
typedef	int	(*xfs_vop_attr_list_t)(bhv_desc_t *, char *, int, int,
				struct attrlist_cursor_kern *, struct cred *);
typedef void	(*xfs_vop_link_removed_t)(bhv_desc_t *, xfs_vnode_t *, int);
typedef void	(*xfs_vop_vnode_change_t)(bhv_desc_t *, vchange_t, __psint_t);
typedef void	(*xfs_vop_ptossvp_t)(bhv_desc_t *, xfs_off_t, xfs_off_t, int);
typedef void	(*xfs_vop_pflushinvalvp_t)(bhv_desc_t *, xfs_off_t, xfs_off_t, int);
typedef int	(*xfs_vop_pflushvp_t)(bhv_desc_t *, xfs_off_t, xfs_off_t,
				uint64_t, int);
typedef int	(*xfs_vop_iflush_t)(bhv_desc_t *, int);


typedef struct xfs_vnodeops {
	bhv_position_t  vn_position;    /* position within behavior chain */
	xfs_vop_open_t		vop_open;
	xfs_vop_read_t		vop_read;
	xfs_vop_write_t		vop_write;
	xfs_vop_ioctl_t		vop_ioctl;
	xfs_vop_getattr_t	vop_getattr;
	xfs_vop_setattr_t	vop_setattr;
	xfs_vop_access_t	vop_access;
	xfs_vop_lookup_t	vop_lookup;
	xfs_vop_create_t	vop_create;
	xfs_vop_remove_t	vop_remove;
	xfs_vop_link_t		vop_link;
	xfs_vop_rename_t	vop_rename;
	xfs_vop_mkdir_t		vop_mkdir;
	xfs_vop_rmdir_t		vop_rmdir;
	xfs_vop_readdir_t	vop_readdir;
	xfs_vop_symlink_t	vop_symlink;
	xfs_vop_readlink_t	vop_readlink;
	xfs_vop_fsync_t		vop_fsync;
	xfs_vop_inactive_t	vop_inactive;
	xfs_vop_fid2_t		vop_fid2;
	xfs_vop_rwlock_t	vop_rwlock;
	xfs_vop_rwunlock_t	vop_rwunlock;
	xfs_vop_frlock_t	vop_frlock;
	xfs_vop_bmap_t		vop_bmap;
	xfs_vop_reclaim_t	vop_reclaim;
	xfs_vop_attr_get_t	vop_attr_get;
	xfs_vop_attr_set_t	vop_attr_set;
	xfs_vop_attr_remove_t	vop_attr_remove;
	xfs_vop_attr_list_t	vop_attr_list;
	xfs_vop_link_removed_t	vop_link_removed;
	xfs_vop_vnode_change_t	vop_vnode_change;
	xfs_vop_ptossvp_t	vop_tosspages;
	xfs_vop_pflushinvalvp_t	vop_flushinval_pages;
	xfs_vop_pflushvp_t	vop_flush_pages;
	xfs_vop_release_t	vop_release;
	xfs_vop_iflush_t	vop_iflush;
} xfs_vnodeops_t;

/*
 * VOP's.
 */
#define _VOP_(op, vp)	(*((xfs_vnodeops_t *)(vp)->v_fops)->op)

#define XVOP_READ(vp,uio,ioflags,cr,rv)			\
	rv = _VOP_(vop_read, vp)((vp)->v_fbhv,uio,ioflags,cr)
#define XVOP_WRITE(vp,file,uio,ioflags,cr,rv)		\
	rv = _VOP_(vop_write, vp)((vp)->v_fbhv,uio,ioflags,cr)
#define XVOP_BMAP(vp,of,sz,rw,b,n,rv)					\
	rv = _VOP_(vop_bmap, vp)((vp)->v_fbhv,of,sz,rw,b,n)
#define XVOP_OPEN(vp, cr, rv)						\
	rv = _VOP_(vop_open, vp)((vp)->v_fbhv, cr)
#define XVOP_GETATTR(vp, vap, f, cr, rv)				\
	rv = _VOP_(vop_getattr, vp)((vp)->v_fbhv, vap, f, cr)
#define	XVOP_SETATTR(vp, vap, f, cr, rv)				\
	rv = _VOP_(vop_setattr, vp)((vp)->v_fbhv, vap, f, cr)
#define	XVOP_ACCESS(vp, accmode, cr, rv)					\
	rv = _VOP_(vop_access, vp)((vp)->v_fbhv, accmode, cr)
#define	XVOP_LOOKUP(vp,d,vpp,f,rdir,cr,rv)				\
	rv = _VOP_(vop_lookup, vp)((vp)->v_fbhv,d,vpp,f,rdir,cr)
#define XVOP_CREATE(dvp,d,vap,vpp,cr,rv)					\
	rv = _VOP_(vop_create, dvp)((dvp)->v_fbhv,d,vap,vpp,cr)
#define XVOP_REMOVE(dvp,d,cr,rv)						\
	rv = _VOP_(vop_remove, dvp)((dvp)->v_fbhv,d,cr)
#define	XVOP_LINK(tdvp,fvp,d,cr,rv)					\
	rv = _VOP_(vop_link, tdvp)((tdvp)->v_fbhv,fvp,d,cr)
#define	XVOP_RENAME(fvp,fnm,tdvp,tnm,cr,rv)				\
	rv = _VOP_(vop_rename, fvp)((fvp)->v_fbhv,fnm,tdvp,tnm,cr)
#define	XVOP_MKDIR(dp,d,vap,vpp,cr,rv)					\
	rv = _VOP_(vop_mkdir, dp)((dp)->v_fbhv,d,vap,vpp,cr)
#define	XVOP_RMDIR(dp,d,cr,rv)						\
	rv = _VOP_(vop_rmdir, dp)((dp)->v_fbhv,d,cr)
#define	XVOP_READDIR(vp,uiop,cr,eofp,rv)				\
	rv = _VOP_(vop_readdir, vp)((vp)->v_fbhv,uiop,cr,eofp)
#define	XVOP_SYMLINK(dvp,d,vap,tnm,vpp,cr,rv)				\
	rv = _VOP_(vop_symlink, dvp) ((dvp)->v_fbhv,d,vap,tnm,vpp,cr)
#define	XVOP_READLINK(vp,uiop,fl,cr,rv)					\
	rv = _VOP_(vop_readlink, vp)((vp)->v_fbhv,uiop,fl,cr)

#define	XVOP_FSYNC(vp,f,cr,b,e,rv)					\
	rv = _VOP_(vop_fsync, vp)((vp)->v_fbhv,f,cr,b,e)
#define XVOP_INACTIVE(vp, cr, rv)					\
	rv = _VOP_(vop_inactive, vp)((vp)->v_fbhv, cr)
#define XVOP_RELEASE(vp, rv)						\
	rv = _VOP_(vop_release, vp)((vp)->v_fbhv)
#define XVOP_FID2(vp, fidp, rv)						\
	rv = _VOP_(vop_fid2, vp)((vp)->v_fbhv, fidp)
#define XVOP_RWLOCK(vp,i)						\
	(void)_VOP_(vop_rwlock, vp)((vp)->v_fbhv, i)
#define XVOP_RWLOCK_TRY(vp,i)						\
	_VOP_(vop_rwlock, vp)((vp)->v_fbhv, i)
#define XVOP_RWUNLOCK(vp,i)						\
	(void)_VOP_(vop_rwunlock, vp)((vp)->v_fbhv, i)
#define XVOP_FRLOCK(vp,c,fl,flags,offset,fr,rv)				\
	rv = _VOP_(vop_frlock, vp)((vp)->v_fbhv,c,fl,flags,offset,fr)
#define XVOP_RECLAIM(vp, rv)						\
	rv = _VOP_(vop_reclaim, vp)((vp)->v_fbhv)
#define XVOP_ATTR_GET(vp, name, val, vallenp, fl, cred, rv)		\
	rv = _VOP_(vop_attr_get, vp)((vp)->v_fbhv,name,val,vallenp,fl,cred)
#define	XVOP_ATTR_SET(vp, name, val, vallen, fl, cred, rv)		\
	rv = _VOP_(vop_attr_set, vp)((vp)->v_fbhv,name,val,vallen,fl,cred)
#define	XVOP_ATTR_REMOVE(vp, name, flags, cred, rv)			\
	rv = _VOP_(vop_attr_remove, vp)((vp)->v_fbhv,name,flags,cred)
#define	XVOP_ATTR_LIST(vp, buf, buflen, fl, cursor, cred, rv)		\
	rv = _VOP_(vop_attr_list, vp)((vp)->v_fbhv,buf,buflen,fl,cursor,cred)
#define XVOP_LINK_REMOVED(vp, dvp, linkzero)				\
	(void)_VOP_(vop_link_removed, vp)((vp)->v_fbhv, dvp, linkzero)
#define XVOP_VNODE_CHANGE(vp, cmd, val)					\
	(void)_VOP_(vop_vnode_change, vp)((vp)->v_fbhv,cmd,val)
/*
 * These are page cache functions that now go thru VOPs.
 * 'last' parameter is unused and left in for IRIX compatibility
 */
#define XVOP_TOSS_PAGES(vp, first, last, fiopt)				\
	_VOP_(vop_tosspages, vp)((vp)->v_fbhv,first, last, fiopt)
/*
 * 'last' parameter is unused and left in for IRIX compatibility
 */
#define XVOP_FLUSHINVAL_PAGES(vp, first, last, fiopt)			\
	_VOP_(vop_flushinval_pages, vp)((vp)->v_fbhv,first,last,fiopt)
/*
 * 'last' parameter is unused and left in for IRIX compatibility
 */
#define XVOP_FLUSH_PAGES(vp, first, last, flags, fiopt, rv)		\
	rv = _VOP_(vop_flush_pages, vp)((vp)->v_fbhv,first,last,flags,fiopt)
#define XVOP_IOCTL(vp, inode, filp, fl, cmd, arg, rv)			\
	rv = _VOP_(vop_ioctl, vp)((vp)->v_fbhv,inode,filp,fl,cmd,arg)
#define XVOP_IFLUSH(vp, flags, rv)					\
	rv = _VOP_(vop_iflush, vp)((vp)->v_fbhv, flags)

/*
 * Flags for read/write calls - select values from FreeBSD IO_ flags
 * or non-conflicting bits.
 */
#define IO_ISDIRECT	IO_DIRECT	/* bypass page cache */
#define IO_INVIS	0x02000		/* don't update inode timestamps */
/* #define IO_ISLOCKED	0x04000		don't do inode locking, strictly a CXFS thing */

/*
 * Flags for VOP_IFLUSH call
 */
#define FLUSH_SYNC		1	/* wait for flush to complete	*/
#define FLUSH_INODE		2	/* flush the inode itself	*/
#define FLUSH_LOG		4	/* force the last log entry for
					 * this inode out to disk	*/

/*
 * Flush/Invalidate options for VOP_TOSS_PAGES, VOP_FLUSHINVAL_PAGES and
 *	VOP_FLUSH_PAGES.
 */
#define FI_NONE			0	/* none */
#define FI_REMAPF		1	/* Do a remapf prior to the operation */
#define FI_REMAPF_LOCKED	2	/* Do a remapf prior to the operation.
					   Prevent VM access to the pages until
					   the operation completes. */

/*
 * Vnode attributes.  va_mask indicates those attributes the caller
 * wants to set or extract.
 */
typedef struct xfs_vattr {
	int		va_mask;	/* bit-mask of attributes present */
	mode_t		va_mode;	/* file access mode and type */
	nlink_t		va_nlink;	/* number of references to file */
	uid_t		va_uid;		/* owner user id */
	gid_t		va_gid;		/* owner group id */
	xfs_ino_t	va_nodeid;	/* file id */
	xfs_off_t	va_size;	/* file size in bytes */
	u_long		va_blocksize;	/* blocksize preferred for i/o */
	struct timespec	va_atime;	/* time of last access */
	struct timespec	va_mtime;	/* time of last modification */
	struct timespec	va_ctime;	/* time file changed */
	u_int		va_gen;		/* generation number of file */
	xfs_dev_t	va_rdev;	/* device the special file represents */
	__int64_t	va_nblocks;	/* number of blocks allocated */
	u_long		va_xflags;	/* random extended file flags */
	u_long		va_extsize;	/* file extent size */
	u_long		va_nextents;	/* number of extents in file */
	u_long		va_anextents;	/* number of attr extents in file */
	int		va_projid;	/* project id */
} xfs_vattr_t;

/*
 * setattr or getattr attributes
 */
#define XFS_AT_TYPE		0x00000001
#define XFS_AT_MODE		0x00000002
#define XFS_AT_UID		0x00000004
#define XFS_AT_GID		0x00000008
#define XFS_AT_FSID		0x00000010
#define XFS_AT_NODEID		0x00000020
#define XFS_AT_NLINK		0x00000040
#define XFS_AT_SIZE		0x00000080
#define XFS_AT_ATIME		0x00000100
#define XFS_AT_MTIME		0x00000200
#define XFS_AT_CTIME		0x00000400
#define XFS_AT_RDEV		0x00000800
#define XFS_AT_BLKSIZE		0x00001000
#define XFS_AT_NBLOCKS		0x00002000
#define XFS_AT_VCODE		0x00004000
#define XFS_AT_MAC		0x00008000
#define XFS_AT_UPDATIME		0x00010000
#define XFS_AT_UPDMTIME		0x00020000
#define XFS_AT_UPDCTIME		0x00040000
#define XFS_AT_ACL		0x00080000
#define XFS_AT_CAP		0x00100000
#define XFS_AT_INF		0x00200000
#define XFS_AT_XFLAGS		0x00400000
#define XFS_AT_EXTSIZE		0x00800000
#define XFS_AT_NEXTENTS		0x01000000
#define XFS_AT_ANEXTENTS	0x02000000
#define XFS_AT_PROJID		0x04000000
#define XFS_AT_SIZE_NOPERM	0x08000000
#define XFS_AT_GENCOUNT		0x10000000

#define XFS_AT_ALL	(XFS_AT_TYPE|XFS_AT_MODE|XFS_AT_UID|XFS_AT_GID|\
		XFS_AT_FSID|XFS_AT_NODEID|XFS_AT_NLINK|XFS_AT_SIZE|\
		XFS_AT_ATIME|XFS_AT_MTIME|XFS_AT_CTIME|XFS_AT_RDEV|\
		XFS_AT_BLKSIZE|XFS_AT_NBLOCKS|XFS_AT_VCODE|XFS_AT_MAC|\
		XFS_AT_ACL|XFS_AT_CAP|XFS_AT_INF|XFS_AT_XFLAGS|XFS_AT_EXTSIZE|\
		XFS_AT_NEXTENTS|XFS_AT_ANEXTENTS|XFS_AT_PROJID|XFS_AT_GENCOUNT)

#define XFS_AT_STAT	(XFS_AT_TYPE|XFS_AT_MODE|XFS_AT_UID|XFS_AT_GID|\
		XFS_AT_FSID|XFS_AT_NODEID|XFS_AT_NLINK|XFS_AT_SIZE|\
		XFS_AT_ATIME|XFS_AT_MTIME|XFS_AT_CTIME|XFS_AT_RDEV|\
		XFS_AT_BLKSIZE|XFS_AT_NBLOCKS|XFS_AT_PROJID)

#define XFS_AT_TIMES	(XFS_AT_ATIME|XFS_AT_MTIME|XFS_AT_CTIME)

#define XFS_AT_UPDTIMES	(XFS_AT_UPDATIME|XFS_AT_UPDMTIME|XFS_AT_UPDCTIME)

#define XFS_AT_NOSET	(XFS_AT_NLINK|XFS_AT_RDEV|XFS_AT_FSID|XFS_AT_NODEID|\
		XFS_AT_TYPE|XFS_AT_BLKSIZE|XFS_AT_NBLOCKS|XFS_AT_VCODE|\
		XFS_AT_NEXTENTS|XFS_AT_ANEXTENTS|XFS_AT_GENCOUNT)

#ifndef __FreeBSD__
/*
 *  Modes.
 */
#define VSUID	S_ISUID		/* set user id on execution */
#define VSGID	S_ISGID		/* set group id on execution */
#define VSVTX	S_ISVTX		/* save swapped text even after use */
#define VREAD	S_IRUSR		/* read, write, execute permissions */
#define VWRITE	S_IWUSR
#define VEXEC	S_IXUSR
#endif /* __FreeBSD__ */

#define MODEMASK ALLPERMS	/* mode bits plus permission bits */

/*
 * Check whether mandatory file locking is enabled.
 */
#define MANDLOCK(vp, mode)	\
	((vp)->v_vnode->v_type == VREG && ((mode) & (S_ISGID|(VEXEC>>3))) == S_ISGID)

extern void		vn_init(void);
extern int		vn_wait(struct xfs_vnode *);
extern void		vn_iowait(struct xfs_vnode *);
extern xfs_vnode_t	*vn_initialize(struct xfs_vnode *);

/*
 * Acquiring and invalidating vnodes:
 *
 *	if (vn_get(vp, version, 0))
 *		...;
 *	vn_purge(vp, version);
 *
 * vn_get and vn_purge must be called with vmap_t arguments, sampled
 * while a lock that the vnode's VOP_RECLAIM function acquires is
 * held, to ensure that the vnode sampled with the lock held isn't
 * recycled (VOP_RECLAIMed) or deallocated between the release of the lock
 * and the subsequent vn_get or vn_purge.
 */

/*
 * vnode_map structures _must_ match vn_epoch and vnode structure sizes.
 */
typedef struct vnode_map {
	xfs_vfs_t	*v_vfsp;
	xfs_ino_t	v_ino;
	struct vnode	*v_vp;
} vmap_t;

#if 1
#define VMAP(vp, vmap)	{(vmap).v_vfsp	 = (vp)->v_vfsp;	\
			 (vmap).v_vp     = (vp)->v_vnode;	\
			 (vmap).v_ino	 = (vp)->v_inode->i_ino;\
			 vhold((vp)->v_vnode);			\
			}
#endif

extern void	vn_purge(struct xfs_vnode *);
extern xfs_vnode_t	*vn_get(struct xfs_vnode *, vmap_t *);
extern int	vn_revalidate(struct xfs_vnode *);

static inline int vn_count(struct xfs_vnode *vp)
{
	return vp->v_vnode->v_usecount;
}

/*
 * Vnode reference counting functions (and macros for compatibility).
 */
extern xfs_vnode_t	*vn_hold(struct xfs_vnode *);
extern void	vn_rele(struct xfs_vnode *);

#if defined(XFS_VNODE_TRACE)
#define VN_HOLD(vp)		\
	((void)vref((vp)->v_vnode), \
	  vn_trace_hold(vp, __FILE__, __LINE__, (inst_t *)__return_address))
#define VN_RELE(vp)		\
	  (vn_trace_rele(vp, __FILE__, __LINE__, (inst_t *)__return_address), \
	   vrele((vp)->v_vnode))
#else
#define VN_HOLD(vp)		vref((vp)->v_vnode)
#define VN_RELE(vp)		vrele((vp)->v_vnode)
#endif

/*
 * Vname handling macros.
 */
#define VNAME(cnp)		((cnp)->cn_nameptr)
#define VNAMELEN(cnp)		((cnp)->cn_namelen)
#define VNAME_TO_VNODE(dentry)	(printf("VNAME_TO_VNODE NI"), (xfs_vnode_t *)0)

/*
 * Vnode spinlock manipulation.
 */
#define VN_LOCK(vp)		VI_LOCK(vp->v_vnode)
#define VN_UNLOCK(vp, s)	VI_UNLOCK(vp->v_vnode)
#define VN_FLAGSET(vp,b)	vn_flagset(vp,b)
#define VN_FLAGCLR(vp,b)	vn_flagclr(vp,b)

static __inline__ void vn_flagset(struct xfs_vnode *vp, __u32 flag)
{
	VN_LOCK(vp);
	vp->v_flag |= flag;
	VN_UNLOCK(vp, 0);
}

static __inline__ void vn_flagclr(struct xfs_vnode *vp, __u32 flag)
{
	VN_LOCK(vp);
	vp->v_flag &= ~flag;
	VN_UNLOCK(vp, 0);
}

/*
 * Update modify/access/change times on the vnode
 */
#define VN_MTIMESET(vp, tvp)
#define VN_ATIMESET(vp, tvp)
#define VN_CTIMESET(vp, tvp)

/*
 * Some useful predicates.
 */
#define	VN_MAPPED(vp)	0
#define	VN_CACHED(vp)	0
#define VN_DIRTY(vp)	0
#define VMODIFY(vp)	VN_FLAGSET(vp, VMODIFIED)
#define VUNMODIFY(vp)	VN_FLAGCLR(vp, VMODIFIED)


/*
 * Flags to VOP_SETATTR/VOP_GETATTR.
 */
#define	ATTR_UTIME	0x01	/* non-default utime(2) request */
#define	ATTR_DMI	0x08	/* invocation from a DMI function */
#define	ATTR_LAZY	0x80	/* set/get attributes lazily */
#define	ATTR_NONBLOCK	0x100	/* return EAGAIN if operation would block */
#define ATTR_NOLOCK	0x200	/* Don't grab any conflicting locks */
#define ATTR_NOSIZETOK	0x400	/* Don't get the SIZE token */

/*
 * Flags to VOP_FSYNC and VOP_RECLAIM.
 */
#define FSYNC_NOWAIT	0	/* asynchronous flush */
#define FSYNC_WAIT	0x1	/* synchronous fsync or forced reclaim */
#define FSYNC_INVAL	0x2	/* flush and invalidate cached data */
#define FSYNC_DATA	0x4	/* synchronous fsync of data only */


static inline struct xfs_vnode *vn_grab(struct xfs_vnode *vp)
{
	printf("vn_grab NI\n");
//	struct inode *inode = igrab(vn_to_inode(vp));
//	return inode ? vn_from_inode(inode) : NULL;
	return NULL;
}

static inline void vn_atime_to_bstime(struct xfs_vnode *vp, xfs_bstime_t *bs_atime)
{
	printf("%s NI\n", __func__);
//        bs_atime->tv_sec = vp->v_inode.i_atime.tv_sec;
//        bs_atime->tv_nsec = vp->v_inode.i_atime.tv_nsec;
}

static inline void vn_atime_to_timespec(struct xfs_vnode *vp, struct timespec *ts)
{
//	*ts = vp->v_vnode->va_atime;
}

/*
 * Tracking vnode activity.
 */
#if defined(XFS_VNODE_TRACE)

#define	VNODE_TRACE_SIZE	16		/* number of trace entries */
#define	VNODE_KTRACE_ENTRY	1
#define	VNODE_KTRACE_EXIT	2
#define	VNODE_KTRACE_HOLD	3
#define	VNODE_KTRACE_REF	4
#define	VNODE_KTRACE_RELE	5

extern void vn_trace_entry(struct xfs_vnode *, char *, inst_t *);
extern void vn_trace_exit(struct xfs_vnode *, char *, inst_t *);
extern void vn_trace_hold(struct xfs_vnode *, char *, int, inst_t *);
extern void vn_trace_ref(struct xfs_vnode *, char *, int, inst_t *);
extern void vn_trace_rele(struct xfs_vnode *, char *, int, inst_t *);



#define	VN_TRACE(vp)		\
	vn_trace_ref(vp, __FILE__, __LINE__, (inst_t *)__return_address)
#else
#define	vn_trace_entry(a,b,c)
#define	vn_trace_exit(a,b,c)
#define	vn_trace_hold(a,b,c,d)
#define	vn_trace_ref(a,b,c,d)
#define	vn_trace_rele(a,b,c,d)
#define	VN_TRACE(vp)
#endif

#endif	/* __XFS_VNODE_H__ */