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segwrite.h revision 1.7 
      1 /* $NetBSD: segwrite.h,v 1.7 2015/09/01 06:15:02 dholland Exp $ */
      2 /*-
      3  * Copyright (c) 2003 The NetBSD Foundation, Inc.
      4  * All rights reserved.
      5  *
      6  * This code is derived from software contributed to The NetBSD Foundation
      7  * by Konrad E. Schroder <perseant (at) hhhh.org>.
      8  *
      9  * Redistribution and use in source and binary forms, with or without
     10  * modification, are permitted provided that the following conditions
     11  * are met:
     12  * 1. Redistributions of source code must retain the above copyright
     13  *    notice, this list of conditions and the following disclaimer.
     14  * 2. Redistributions in binary form must reproduce the above copyright
     15  *    notice, this list of conditions and the following disclaimer in the
     16  *    documentation and/or other materials provided with the distribution.
     17  *
     18  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     19  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     20  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     21  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     22  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     23  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     24  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     25  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     26  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     27  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     28  * POSSIBILITY OF SUCH DAMAGE.
     29  */
     30 /*
     31  * Determine if it's OK to start a partial in this segment, or if we need
     32  * to go on to a new segment.
     33  */
     34 #define	LFS_PARTIAL_FITS(fs) \
     35 	(lfs_sb_getfsbpseg(fs) - (lfs_sb_getoffset(fs) - lfs_sb_getcurseg(fs)) > \
     36 	lfs_sb_getfrag(fs))
     37 
     38 /* op values to lfs_writevnodes */
     39 #define	VN_REG		0
     40 #define	VN_DIROP	1
     41 
     42 int lfs_segwrite(struct lfs *, int);
     43 void lfs_writefile(struct lfs *, struct segment *, struct uvnode *);
     44 int lfs_writeinode(struct lfs *, struct segment *, struct inode *);
     45 int lfs_gatherblock(struct segment *, struct ubuf *);
     46 int lfs_gather(struct lfs *, struct segment *, struct uvnode *,
     47 	   int (*match) (struct lfs *, struct ubuf *));
     48 void lfs_updatemeta(struct segment *);
     49 int lfs_initseg(struct lfs *);
     50 void lfs_newseg(struct lfs *);
     51 int lfs_writeseg(struct lfs *, struct segment *);
     52 void lfs_writesuper(struct lfs *, daddr_t);
     53 
     54 int lfs_match_data(struct lfs *, struct ubuf *);
     55 int lfs_match_indir(struct lfs *, struct ubuf *);
     56 int lfs_match_dindir(struct lfs *, struct ubuf *);
     57 int lfs_match_tindir(struct lfs *, struct ubuf *);
     58 
     59 int ulfs_getlbns(struct lfs *, struct uvnode *, daddr_t, struct indir *, int *);
     60 int ulfs_bmaparray(struct lfs *, struct uvnode *, daddr_t, daddr_t *, struct indir *, int *);
     61 
     62 int lfs_seglock(struct lfs *, unsigned long);
     63 void lfs_segunlock(struct lfs *);
     64 int lfs_writevnodes(struct lfs *, struct segment *, int);
     65 
     66