text: /*
   * CDDL HEADER START
   *
   * The contents of this file are subject to the terms of the
   * Common Development and Distribution License, Version 1.0 only
   * (the "License").  You may not use this file except in compliance
   * with the License.
   *
   * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   * or http://www.opensolaris.org/os/licensing.
   * See the License for the specific language governing permissions
   * and limitations under the License.
   *
   * When distributing Covered Code, include this CDDL HEADER in each
   * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
   * If applicable, add the following below this CDDL HEADER, with the
   * fields enclosed by brackets "[]" replaced with your own identifying
   * information: Portions Copyright [yyyy] [name of copyright owner]
   *
   * CDDL HEADER END
   */
  /*
   * Copyright 2014 Garrett D'Amore <garrett@damore.org>
   *
   * Copyright 2005 Sun Microsystems, Inc.  All rights reserved.
   * Use is subject to license terms.
   */
  
  #ifndef _SYS_FS_UFS_TRANS_H
  #define	_SYS_FS_UFS_TRANS_H
  
  #ifdef	__cplusplus
  extern "C" {
  #endif
  
  #include	<sys/types.h>
  #include	<sys/cred.h>
  #include	<sys/fs/ufs_fs.h>
  
  /*
   * Types of deltas
   */
  typedef enum delta_type {
  	DT_NONE,	/*  0 no assigned type */
  	DT_SB,		/*  1 superblock */
  	DT_CG,		/*  2 cylinder group */
  	DT_SI,		/*  3 summary info */
  	DT_AB,		/*  4 allocation block */
  	DT_ABZERO,	/*  5 a zero'ed allocation block */
  	DT_DIR,		/*  6 directory */
  	DT_INODE,	/*  7 inode */
  	DT_FBI,		/*  8 fbiwrite */
  	DT_QR,		/*  9 quota record */
  	DT_COMMIT,	/* 10 commit record */
  	DT_CANCEL,	/* 11 cancel record */
  	DT_BOT,		/* 12 begin transaction */
  	DT_EOT,		/* 13 end   transaction */
  	DT_UD,		/* 14 userdata */
  	DT_SUD,		/* 15 userdata found during log scan */
  	DT_SHAD,	/* 16 data for a shadow inode */
  	DT_MAX		/* 17 maximum delta type */
  } delta_t;
  
  /*
   * transaction operation types
   */
  typedef enum top_type {
  	TOP_READ_SYNC,		/* 0 */
  	TOP_WRITE,		/* 1 */
  	TOP_WRITE_SYNC,		/* 2 */
  	TOP_SETATTR,		/* 3 */
  	TOP_CREATE,		/* 4 */
  	TOP_REMOVE,		/* 5 */
  	TOP_LINK,		/* 6 */
  	TOP_RENAME,		/* 7 */
  	TOP_MKDIR,		/* 8 */
  	TOP_RMDIR,		/* 9 */
  	TOP_SYMLINK,		/* 10 */
  	TOP_FSYNC,		/* 11 */
  	TOP_GETPAGE,		/* 12 */
  	TOP_PUTPAGE,		/* 13 */
  	TOP_SBUPDATE_FLUSH,	/* 14 */
  	TOP_SBUPDATE_UPDATE,	/* 15 */
  	TOP_SBUPDATE_UNMOUNT,	/* 16 */
  	TOP_SYNCIP_CLOSEDQ,	/* 17 */
  	TOP_SYNCIP_FLUSHI,	/* 18 */
  	TOP_SYNCIP_HLOCK,	/* 19 */
  	TOP_SYNCIP_SYNC,	/* 20 */
  	TOP_SYNCIP_FREE,	/* 21 */
  	TOP_SBWRITE_RECLAIM,	/* 22 */
  	TOP_SBWRITE_STABLE,	/* 23 */
  	TOP_IFREE,		/* 24 */
  	TOP_IUPDAT,		/* 25 */
  	TOP_MOUNT,		/* 26 */
  	TOP_COMMIT_ASYNC,	/* 27 */
  	TOP_COMMIT_FLUSH,	/* 28 */
  	TOP_COMMIT_UPDATE,	/* 29 */
  	TOP_COMMIT_UNMOUNT,	/* 30 */
  	TOP_SETSECATTR,		/* 31 */
  	TOP_QUOTA,		/* 32 */
  	TOP_ITRUNC,		/* 33 */
  	TOP_ALLOCSP,		/* 34 */
  	TOP_MAX			/* 35 TOP_MAX MUST be the last entry */
  } top_t;
  
  struct inode;
  struct ufsvfs;
  
  /*
   * vfs_log == NULL means not logging
   */
  #define	TRANS_ISTRANS(ufsvfsp)	(ufsvfsp->vfs_log)
  
  /*
   * begin a synchronous transaction
   */
  #define	TRANS_BEGIN_SYNC(ufsvfsp, vid, vsize, error)\
  {\
  	if (TRANS_ISTRANS(ufsvfsp)) { \
  		error = 0; \
  		top_begin_sync(ufsvfsp, vid, vsize, &error); \
  	} \
  }
  
  /*
   * begin a asynchronous transaction
   */
  #define	TRANS_BEGIN_ASYNC(ufsvfsp, vid, vsize)\
  {\
  	if (TRANS_ISTRANS(ufsvfsp))\
  		(void) top_begin_async(ufsvfsp, vid, vsize, 0); \
  }
  
  /*
   * try to begin a asynchronous transaction
   */
  #define	TRANS_TRY_BEGIN_ASYNC(ufsvfsp, vid, vsize, err)\
  {\
  	if (TRANS_ISTRANS(ufsvfsp))\
  		err = top_begin_async(ufsvfsp, vid, vsize, 1); \
  	else\
  		err = 0; \
  }
  
  /*
   * Begin a synchronous or asynchronous transaction.
   * The lint case is needed because vsize can be a constant.
   */
  #ifndef __lint
  
  #define	TRANS_BEGIN_CSYNC(ufsvfsp, issync, vid, vsize)\
  {\
  	if (TRANS_ISTRANS(ufsvfsp)) {\
  		if (ufsvfsp->vfs_syncdir) {\
  			int error = 0; \
  			ASSERT(vsize); \
  			top_begin_sync(ufsvfsp, vid, vsize, &error); \
  			ASSERT(error == 0); \
  			issync = 1; \
  		} else {\
  			(void) top_begin_async(ufsvfsp, vid, vsize, 0); \
  			issync = 0; \
  		}\
  	}\
  }
  
  #else /* __lint */
  
  #define	TRANS_BEGIN_CSYNC(ufsvfsp, issync, vid, vsize)\
  {\
  	if (TRANS_ISTRANS(ufsvfsp)) {\
  		if (ufsvfsp->vfs_syncdir) {\
  			int error = 0; \
  			top_begin_sync(ufsvfsp, vid, vsize, &error); \
  			issync = 1; \
  		} else {\
  			(void) top_begin_async(ufsvfsp, vid, vsize, 0); \
  			issync = 0; \
  		}\
  	}\
  }
  #endif /* __lint */
  
  /*
   * try to begin a synchronous or asynchronous transaction
   */
  
  #define	TRANS_TRY_BEGIN_CSYNC(ufsvfsp, issync, vid, vsize, error)\
  {\
  	if (TRANS_ISTRANS(ufsvfsp)) {\
  		if (ufsvfsp->vfs_syncdir) {\
  			ASSERT(vsize); \
  			top_begin_sync(ufsvfsp, vid, vsize, &error); \
  			ASSERT(error == 0); \
  			issync = 1; \
  		} else {\
  			error = top_begin_async(ufsvfsp, vid, vsize, 1); \
  			issync = 0; \
  		}\
  	}\
  }\
  
  
  /*
   * end a asynchronous transaction
   */
  #define	TRANS_END_ASYNC(ufsvfsp, vid, vsize)\
  {\
  	if (TRANS_ISTRANS(ufsvfsp))\
  		top_end_async(ufsvfsp, vid, vsize); \
  }
  
  /*
   * end a synchronous transaction
   */
  #define	TRANS_END_SYNC(ufsvfsp, error, vid, vsize)\
  {\
  	if (TRANS_ISTRANS(ufsvfsp))\
  		top_end_sync(ufsvfsp, &error, vid, vsize); \
  }
  
  /*
   * end a synchronous or asynchronous transaction
   */
  #define	TRANS_END_CSYNC(ufsvfsp, error, issync, vid, vsize)\
  {\
  	if (TRANS_ISTRANS(ufsvfsp))\
  		if (issync)\
  			top_end_sync(ufsvfsp, &error, vid, vsize); \
  		else\
  			top_end_async(ufsvfsp, vid, vsize); \
  }
  /*
   * record a delta
   */
  #define	TRANS_DELTA(ufsvfsp, mof, nb, dtyp, func, arg) \
  	if (TRANS_ISTRANS(ufsvfsp)) \
  		top_delta(ufsvfsp, (offset_t)(mof), nb, dtyp, func, arg)
  
  /*
   * cancel a delta
   */
  #define	TRANS_CANCEL(ufsvfsp, mof, nb, flags) \
  	if (TRANS_ISTRANS(ufsvfsp)) \
  		top_cancel(ufsvfsp, (offset_t)(mof), nb, flags)
  /*
   * log a delta
   */
  #define	TRANS_LOG(ufsvfsp, va, mof, nb, buf, bufsz) \
  	if (TRANS_ISTRANS(ufsvfsp)) \
  		top_log(ufsvfsp, va, (offset_t)(mof), nb, buf, bufsz)
  /*
   * check if a range is being canceled (converting from metadata into userdata)
   */
  #define	TRANS_ISCANCEL(ufsvfsp, mof, nb) \
  	((TRANS_ISTRANS(ufsvfsp)) ? \
  		top_iscancel(ufsvfsp, (offset_t)(mof), nb) : 0)
  /*
   * put the log into error state
   */
  #define	TRANS_SETERROR(ufsvfsp) \
  	if (TRANS_ISTRANS(ufsvfsp)) \
  		top_seterror(ufsvfsp)
  /*
   * check if device has had an error
   */
  #define	TRANS_ISERROR(ufsvfsp) \
  	((TRANS_ISTRANS(ufsvfsp)) ? \
  		ufsvfsp->vfs_log->un_flags & LDL_ERROR : 0)
  
  /*
   * The following macros provide a more readable interface to TRANS_DELTA
   */
  #define	TRANS_BUF(ufsvfsp, vof, nb, bp, type) \
  	TRANS_DELTA(ufsvfsp, \
  		ldbtob(bp->b_blkno) + (offset_t)(vof), nb, type, \
  		ufs_trans_push_buf, bp->b_blkno)
  
  #define	TRANS_BUF_ITEM_128(ufsvfsp, item, base, bp, type) \
  	TRANS_BUF(ufsvfsp, \
  	(((uintptr_t)&(item)) & ~(128 - 1)) - (uintptr_t)(base), 128, bp, type)
  
  #define	TRANS_INODE(ufsvfsp, ip) \
  	TRANS_DELTA(ufsvfsp, ip->i_doff, sizeof (struct dinode), \
  			DT_INODE, ufs_trans_push_inode, ip->i_number)
  
  /*
   * If ever parts of an inode except the timestamps are logged using
   * this macro (or any other technique), bootloader logging support must
   * be made aware of these changes.
   */
  #define	TRANS_INODE_DELTA(ufsvfsp, vof, nb, ip) \
  	TRANS_DELTA(ufsvfsp, (ip->i_doff + (offset_t)(vof)), \
  		nb, DT_INODE, ufs_trans_push_inode, ip->i_number)
  
  #define	TRANS_INODE_TIMES(ufsvfsp, ip) \
  	TRANS_INODE_DELTA(ufsvfsp, (caddr_t)&ip->i_atime - (caddr_t)&ip->i_ic, \
  		sizeof (struct timeval32) * 3, ip)
  
  /*
   * Check if we need to log cylinder group summary info.
   */
  #define	TRANS_SI(ufsvfsp, fs, cg) \
  	if (TRANS_ISTRANS(ufsvfsp)) \
  		if (ufsvfsp->vfs_nolog_si) \
  			fs->fs_si = FS_SI_BAD; \
  		else \
  			TRANS_DELTA(ufsvfsp, \
  				ldbtob(fsbtodb(fs, fs->fs_csaddr)) + \
  				((caddr_t)&fs->fs_cs(fs, cg) - \
  				(caddr_t)fs->fs_u.fs_csp), \
  				sizeof (struct csum), DT_SI, \
  				ufs_trans_push_si, cg)
  
  #define	TRANS_DIR(ip, offset) \
  	(TRANS_ISTRANS(ip->i_ufsvfs) ? ufs_trans_dir(ip, offset) : 0)
  
  #define	TRANS_QUOTA(dqp)	\
  	if (TRANS_ISTRANS(dqp->dq_ufsvfsp))	\
  		ufs_trans_quota(dqp);
  
  #define	TRANS_DQRELE(ufsvfsp, dqp) \
  	if (TRANS_ISTRANS(ufsvfsp) && \
  	    ((curthread->t_flag & T_DONTBLOCK) == 0)) { \
  		ufs_trans_dqrele(dqp); \
  	} else { \
  		rw_enter(&ufsvfsp->vfs_dqrwlock, RW_READER); \
  		dqrele(dqp); \
  		rw_exit(&ufsvfsp->vfs_dqrwlock); \
  	}
  
  #define	TRANS_ITRUNC(ip, length, flags, cr)	\
  	ufs_trans_itrunc(ip, length, flags, cr);
  
  #define	TRANS_WRITE_RESV(ip, uiop, ulp, resvp, residp)	\
  	if ((TRANS_ISTRANS(ip->i_ufsvfs) != NULL) && (ulp != NULL)) \
  		ufs_trans_write_resv(ip, uiop, resvp, residp);
  
  #define	TRANS_WRITE(ip, uiop, ioflag, err, ulp, cr, resv, resid)	\
  	if ((TRANS_ISTRANS(ip->i_ufsvfs) != NULL) && (ulp != NULL)) \
  		err = ufs_trans_write(ip, uiop, ioflag, cr, resv, resid); \
  	else \
  		err = wrip(ip, uiop, ioflag, cr);
  
  /*
   * These functions "wrap" functions that are not VOP or VFS
   * entry points but must still use the TRANS_BEGIN/TRANS_END
   * protocol
   */
  #define	TRANS_SBUPDATE(ufsvfsp, vfsp, topid) \
  	ufs_trans_sbupdate(ufsvfsp, vfsp, topid)
  #define	TRANS_SYNCIP(ip, bflags, iflag, topid) \
  	ufs_syncip(ip, bflags, iflag, topid)
  #define	TRANS_SBWRITE(ufsvfsp, topid)	ufs_trans_sbwrite(ufsvfsp, topid)
  #define	TRANS_IUPDAT(ip, waitfor)	ufs_trans_iupdat(ip, waitfor)
  
  #ifdef	DEBUG
  /*
   * Test/Debug ops
   *	The following ops maintain the metadata map.
   *	The metadata map is a debug/test feature.
   *	These ops are *not* used in the production product.
   */
  
  /*
   * Set a flag if meta data checking.
   */
  #define	TRANS_DOMATAMAP(ufsvfsp) \
  	ufsvfsp->vfs_domatamap = \
  		(TRANS_ISTRANS(ufsvfsp) && \
  		(ufsvfsp->vfs_log->un_debug & MT_MATAMAP))
  
  #define	TRANS_MATA_IGET(ufsvfsp, ip) \
  	if (ufsvfsp->vfs_domatamap) \
  		ufs_trans_mata_iget(ip)
  
  #define	TRANS_MATA_FREE(ufsvfsp, mof, nb) \
  	if (ufsvfsp->vfs_domatamap) \
  		ufs_trans_mata_free(ufsvfsp, (offset_t)(mof), nb)
  
  #define	TRANS_MATA_ALLOC(ufsvfsp, ip, bno, size, zero) \
  	if (ufsvfsp->vfs_domatamap) \
  		ufs_trans_mata_alloc(ufsvfsp, ip, bno, size, zero)
  
  #define	TRANS_MATA_MOUNT(ufsvfsp) \
  	if (ufsvfsp->vfs_domatamap) \
  		ufs_trans_mata_mount(ufsvfsp)
  
  #define	TRANS_MATA_UMOUNT(ufsvfsp) \
  	if (ufsvfsp->vfs_domatamap) \
  		ufs_trans_mata_umount(ufsvfsp)
  
  #define	TRANS_MATA_SI(ufsvfsp, fs) \
  	if (ufsvfsp->vfs_domatamap) \
  		ufs_trans_mata_si(ufsvfsp, fs)
  
  #define	TRANS_MATAADD(ufsvfsp, mof, nb) \
  	top_mataadd(ufsvfsp, (offset_t)(mof), nb)
  
  #else /* !DEBUG */
  
  #define	TRANS_DOMATAMAP(ufsvfsp)
  #define	TRANS_MATA_IGET(ufsvfsp, ip)
  #define	TRANS_MATA_FREE(ufsvfsp, mof, nb)
  #define	TRANS_MATA_ALLOC(ufsvfsp, ip, bno, size, zero)
  #define	TRANS_MATA_MOUNT(ufsvfsp)
  #define	TRANS_MATA_UMOUNT(ufsvfsp)
  #define	TRANS_MATA_SI(ufsvfsp, fs)
  #define	TRANS_MATAADD(ufsvfsp, mof, nb)
  
  #endif  /* !DEBUG */
  
  #include	<sys/fs/ufs_quota.h>
  #include	<sys/fs/ufs_lockfs.h>
  /*
   * identifies the type of operation passed into TRANS_BEGIN/END
   */
  #define	TOP_SYNC		(0x00000001)
  #define	TOP_ASYNC		(0x00000002)
  #define	TOP_SYNC_FORCED		(0x00000004)	/* forced sync transaction */
  /*
   *  estimated values
   */
  #define	HEADERSIZE		(128)
  #define	ALLOCSIZE		(160)
  #define	INODESIZE		(sizeof (struct dinode) + HEADERSIZE)
  #define	SIZESB			((sizeof (struct fs)) + HEADERSIZE)
  #define	SIZEDIR			(DIRBLKSIZ + HEADERSIZE)
  /*
   * calculated values
   */
  #define	SIZECG(IP)		((IP)->i_fs->fs_cgsize + HEADERSIZE)
  #define	FRAGSIZE(IP)		((IP)->i_fs->fs_fsize + HEADERSIZE)
  #define	ACLSIZE(IP)		(((IP)->i_ufsvfs->vfs_maxacl + HEADERSIZE) + \
  					INODESIZE)
  #define	MAXACLSIZE		((MAX_ACL_ENTRIES << 1) * sizeof (aclent_t))
  #define	DIRSIZE(IP)		(INODESIZE + (4 * ALLOCSIZE) + \
  				    (IP)->i_fs->fs_fsize + HEADERSIZE)
  #define	QUOTASIZE		sizeof (struct dquot) + HEADERSIZE
  /*
   * size calculations
   */
  #define	TOP_CREATE_SIZE(IP)	\
  	(ACLSIZE(IP) + SIZECG(IP) + DIRSIZE(IP) + INODESIZE)
  #define	TOP_REMOVE_SIZE(IP)	\
  	DIRSIZE(IP)  + SIZECG(IP) + INODESIZE + SIZESB
  #define	TOP_LINK_SIZE(IP)	\
  	DIRSIZE(IP) + INODESIZE
  #define	TOP_RENAME_SIZE(IP)	\
  	DIRSIZE(IP) + DIRSIZE(IP) + SIZECG(IP)
  #define	TOP_MKDIR_SIZE(IP)	\
  	DIRSIZE(IP) + INODESIZE + DIRSIZE(IP) + INODESIZE + FRAGSIZE(IP) + \
  	    SIZECG(IP) + ACLSIZE(IP)
  #define	TOP_SYMLINK_SIZE(IP)	\
  	DIRSIZE((IP)) + INODESIZE + INODESIZE + SIZECG(IP)
  #define	TOP_GETPAGE_SIZE(IP)	\
  	ALLOCSIZE + ALLOCSIZE + ALLOCSIZE + INODESIZE + SIZECG(IP)
  #define	TOP_SYNCIP_SIZE		INODESIZE
  #define	TOP_READ_SIZE		INODESIZE
  #define	TOP_RMDIR_SIZE		(SIZESB + (INODESIZE * 2) + SIZEDIR)
  #define	TOP_SETQUOTA_SIZE(FS)	((FS)->fs_bsize << 2)
  #define	TOP_QUOTA_SIZE		(QUOTASIZE)
  #define	TOP_SETSECATTR_SIZE(IP)	(MAXACLSIZE)
  #define	TOP_IUPDAT_SIZE(IP)	INODESIZE + SIZECG(IP)
  #define	TOP_SBUPDATE_SIZE	(SIZESB)
  #define	TOP_SBWRITE_SIZE	(SIZESB)
  #define	TOP_PUTPAGE_SIZE(IP)	(INODESIZE + SIZECG(IP))
  #define	TOP_SETATTR_SIZE(IP)	(SIZECG(IP) + INODESIZE + QUOTASIZE + \
  		ACLSIZE(IP))
  #define	TOP_IFREE_SIZE(IP)	(SIZECG(IP) + INODESIZE + QUOTASIZE)
  #define	TOP_MOUNT_SIZE		(SIZESB)
  #define	TOP_COMMIT_SIZE		(0)
  
  /*
   * The minimum log size is 1M.  So we will allow 1 fs operation to
   * reserve at most 512K of log space.
   */
  #define	TOP_MAX_RESV	(512 * 1024)
  
  
  /*
   * ufs trans function prototypes
   */
  #if defined(_KERNEL)
  
  extern int		ufs_trans_hlock();
  extern void		ufs_trans_onerror();
  extern int		ufs_trans_push_inode(struct ufsvfs *, delta_t, ino_t);
  extern int		ufs_trans_push_buf(struct ufsvfs *, delta_t, daddr_t);
  extern int		ufs_trans_push_si(struct ufsvfs *, delta_t, int);
  extern void		ufs_trans_sbupdate(struct ufsvfs *, struct vfs *,
  				top_t);
  extern void		ufs_trans_sbwrite(struct ufsvfs *, top_t);
  extern void		ufs_trans_iupdat(struct inode *, int);
  extern void		ufs_trans_mata_mount(struct ufsvfs *);
  extern void		ufs_trans_mata_umount(struct ufsvfs *);
  extern void		ufs_trans_mata_si(struct ufsvfs *, struct fs *);
  extern void		ufs_trans_mata_iget(struct inode *);
  extern void		ufs_trans_mata_free(struct ufsvfs *, offset_t, off_t);
  extern void		ufs_trans_mata_alloc(struct ufsvfs *, struct inode *,
  				daddr_t, ulong_t, int);
  extern int		ufs_trans_dir(struct inode *, off_t);
  extern void		ufs_trans_quota(struct dquot *);
  extern void		ufs_trans_dqrele(struct dquot *);
  extern int		ufs_trans_itrunc(struct inode *, u_offset_t, int,
  			    cred_t *);
  extern int		ufs_trans_write(struct inode *, struct uio *, int,
  			    cred_t *, int, long);
  extern void		ufs_trans_write_resv(struct inode *, struct uio *,
  				int *, int *);
  extern int		ufs_trans_check(dev_t);
  extern void		ufs_trans_redev(dev_t odev, dev_t ndev);
  extern void		ufs_trans_trunc_resv(struct inode *, u_offset_t, int *,
  				u_offset_t *);
  
  /*
   * transaction prototypes
   */
  void	lufs_unsnarf(struct ufsvfs *ufsvfsp);
  int	lufs_snarf(struct ufsvfs *ufsvfsp, struct fs *fs, int ronly);
  void	top_delta(struct ufsvfs *ufsvfsp, offset_t mof, off_t nb, delta_t dtyp,
  	    int (*func)(), ulong_t arg);
  void	top_cancel(struct ufsvfs *ufsvfsp, offset_t mof, off_t nb, int flags);
  int	top_iscancel(struct ufsvfs *ufsvfsp, offset_t mof, off_t nb);
  void	top_seterror(struct ufsvfs *ufsvfsp);
  int	top_iserror(struct ufsvfs *ufsvfsp);
  void	top_begin_sync(struct ufsvfs *ufsvfsp, top_t topid, ulong_t size,
  	    int *error);
  int	top_begin_async(struct ufsvfs *ufsvfsp, top_t topid, ulong_t size,
  	    int tryasync);
  void	top_end_sync(struct ufsvfs *ufsvfsp, int *ep, top_t topid,
  	    ulong_t size);
  void	top_end_async(struct ufsvfs *ufsvfsp, top_t topid, ulong_t size);
  void	top_log(struct ufsvfs *ufsvfsp, char *va, offset_t vamof, off_t nb,
  	    caddr_t buf, uint32_t bufsz);
  void	top_mataadd(struct ufsvfs *ufsvfsp, offset_t mof, off_t nb);
  void	top_matadel(struct ufsvfs *ufsvfsp, offset_t mof, off_t nb);
  void	top_mataclr(struct ufsvfs *ufsvfsp);
  
  
  #endif	/* defined(_KERNEL) */
  
  #ifdef	__cplusplus
  }
  #endif
  
  #endif	/* _SYS_FS_UFS_TRANS_H */
  