pass1b.c

早期freebsd实现

/*
 * Copyright (c) 1980, 1986, 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. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *	This product includes software developed by the University of
 *	California, Berkeley and its contributors.
 * 4. 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 lint
static char sccsid[] = "@(#)pass1b.c	8.1 (Berkeley) 6/5/93";
#endif /* not lint */

#include <sys/param.h>
#include <sys/time.h>
#include <ufs/ufs/dinode.h>
#include <ufs/ffs/fs.h>
#include <string.h>
#include "fsck.h"

int	pass1bcheck();
static  struct dups *duphead;

pass1b()
{
	register int c, i;
	register struct dinode *dp;
	struct inodesc idesc;
	ino_t inumber;

	bzero((char *)&idesc, sizeof(struct inodesc));
	idesc.id_type = ADDR;
	idesc.id_func = pass1bcheck;
	duphead = duplist;
	inumber = 0;
	for (c = 0; c < sblock.fs_ncg; c++) {
		for (i = 0; i < sblock.fs_ipg; i++, inumber++) {
			if (inumber < ROOTINO)
				continue;
			dp = ginode(inumber);
			if (dp == NULL)
				continue;
			idesc.id_number = inumber;
			if (statemap[inumber] != USTATE &&
			    (ckinode(dp, &idesc) & STOP))
				return;
		}
	}
}

pass1bcheck(idesc)
	register struct inodesc *idesc;
{
	register struct dups *dlp;
	int nfrags, res = KEEPON;
	daddr_t blkno = idesc->id_blkno;

	for (nfrags = idesc->id_numfrags; nfrags > 0; blkno++, nfrags--) {
		if (chkrange(blkno, 1))
			res = SKIP;
		for (dlp = duphead; dlp; dlp = dlp->next) {
			if (dlp->dup == blkno) {
				blkerror(idesc->id_number, "DUP", blkno);
				dlp->dup = duphead->dup;
				duphead->dup = blkno;
				duphead = duphead->next;
			}
			if (dlp == muldup)
				break;
		}
		if (muldup == 0 || duphead == muldup->next)
			return (STOP);
	}
	return (res);
}