[unix-history] / sbin / fsck / pass4.c

/*
 * Copyright (c) 1980, 1986 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[] = "@(#)pass4.c	5.10 (Berkeley) 7/20/90";
static char rcsid[] = "$Header: /b/source/CVS/src/sbin/fsck/pass4.c,v 1.3 1993/03/23 00:28:07 cgd Exp $";
#endif /* not lint */

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

int	pass4check();

pass4()
{
	register ino_t inumber;
	register struct zlncnt *zlnp;
	struct dinode *dp;
	struct inodesc idesc;
	int n;

	bzero((char *)&idesc, sizeof(struct inodesc));
	idesc.id_type = ADDR;
	idesc.id_func = pass4check;
	for (inumber = ROOTINO; inumber <= lastino; inumber++) {
		idesc.id_number = inumber;
		switch (statemap[inumber]) {

		case FSTATE:
		case DFOUND:
			n = lncntp[inumber];
			if (n)
				adjust(&idesc, (short)n);
			else {
				for (zlnp = zlnhead; zlnp; zlnp = zlnp->next)
					if (zlnp->zlncnt == inumber) {
						zlnp->zlncnt = zlnhead->zlncnt;
						zlnp = zlnhead;
						zlnhead = zlnhead->next;
						free((char *)zlnp);
						clri(&idesc, "UNREF", 1);
						break;
					}
			}
			break;

		case DSTATE:
			clri(&idesc, "UNREF", 1);
			break;

		case DCLEAR:
			dp = ginode(inumber);
			if (dp->di_size == 0) {
				clri(&idesc, "ZERO LENGTH", 1);
				break;
			}
			/* fall through */
		case FCLEAR:
			clri(&idesc, "BAD/DUP", 1);
			break;

		case USTATE:
			break;

		default:
			errexit("BAD STATE %d FOR INODE I=%d",
			    statemap[inumber], inumber);
		}
	}
}

pass4check(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;
		} else if (testbmap(blkno)) {
			for (dlp = duplist; dlp; dlp = dlp->next) {
				if (dlp->dup != blkno)
					continue;
				dlp->dup = duplist->dup;
				dlp = duplist;
				duplist = duplist->next;
				free((char *)dlp);
				break;
			}
			if (dlp == 0) {
				clrbmap(blkno);
				n_blks--;
			}
		}
	}
	return (res);
}
Commit	Line	Data
15637ed4 RG	1	/*
	2	* Copyright (c) 1980, 1986 The Regents of the University of California.
	3	* All rights reserved.
	4	*
	5	* Redistribution and use in source and binary forms, with or without
	6	* modification, are permitted provided that the following conditions
	7	* are met:
	8	* 1. Redistributions of source code must retain the above copyright
	9	* notice, this list of conditions and the following disclaimer.
	10	* 2. Redistributions in binary form must reproduce the above copyright
	11	* notice, this list of conditions and the following disclaimer in the
	12	* documentation and/or other materials provided with the distribution.
	13	* 3. All advertising materials mentioning features or use of this software
	14	* must display the following acknowledgement:
	15	* This product includes software developed by the University of
	16	* California, Berkeley and its contributors.
	17	* 4. Neither the name of the University nor the names of its contributors
	18	* may be used to endorse or promote products derived from this software
	19	* without specific prior written permission.
	20	*
	21	* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
	22	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	23	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	24	* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
	25	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	26	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	27	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	28	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	29	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	30	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	31	* SUCH DAMAGE.
	32	*/
	33
	34	#ifndef lint
	35	static char sccsid[] = "@(#)pass4.c 5.10 (Berkeley) 7/20/90";
78ed81a3	36	static char rcsid[] = "$Header: /b/source/CVS/src/sbin/fsck/pass4.c,v 1.3 1993/03/23 00:28:07 cgd Exp $";
15637ed4 RG	37	#endif /* not lint */
	38
	39	#include <sys/param.h>
	40	#include <ufs/dinode.h>
	41	#include <ufs/fs.h>
	42	#include <stdlib.h>
	43	#include <string.h>
	44	#include "fsck.h"
	45
	46	int pass4check();
	47
	48	pass4()
	49	{
	50	register ino_t inumber;
	51	register struct zlncnt *zlnp;
	52	struct dinode *dp;
	53	struct inodesc idesc;
	54	int n;
	55
	56	bzero((char *)&idesc, sizeof(struct inodesc));
	57	idesc.id_type = ADDR;
	58	idesc.id_func = pass4check;
	59	for (inumber = ROOTINO; inumber <= lastino; inumber++) {
	60	idesc.id_number = inumber;
	61	switch (statemap[inumber]) {
	62
	63	case FSTATE:
	64	case DFOUND:
	65	n = lncntp[inumber];
	66	if (n)
	67	adjust(&idesc, (short)n);
	68	else {
	69	for (zlnp = zlnhead; zlnp; zlnp = zlnp->next)
	70	if (zlnp->zlncnt == inumber) {
	71	zlnp->zlncnt = zlnhead->zlncnt;
	72	zlnp = zlnhead;
	73	zlnhead = zlnhead->next;
	74	free((char *)zlnp);
	75	clri(&idesc, "UNREF", 1);
	76	break;
	77	}
	78	}
	79	break;
	80
	81	case DSTATE:
	82	clri(&idesc, "UNREF", 1);
	83	break;
	84
	85	case DCLEAR:
	86	dp = ginode(inumber);
	87	if (dp->di_size == 0) {
	88	clri(&idesc, "ZERO LENGTH", 1);
	89	break;
	90	}
	91	/* fall through */
	92	case FCLEAR:
	93	clri(&idesc, "BAD/DUP", 1);
	94	break;
	95
	96	case USTATE:
	97	break;
	98
	99	default:
	100	errexit("BAD STATE %d FOR INODE I=%d",
101	statemap[inumber], inumber);
102	}
103	}
104	}
105
106	pass4check(idesc)
107	register struct inodesc *idesc;
108	{
109	register struct dups *dlp;
110	int nfrags, res = KEEPON;
111	daddr_t blkno = idesc->id_blkno;
112
113	for (nfrags = idesc->id_numfrags; nfrags > 0; blkno++, nfrags--) {
114	if (chkrange(blkno, 1)) {
115	res = SKIP;
116	} else if (testbmap(blkno)) {
117	for (dlp = duplist; dlp; dlp = dlp->next) {
118	if (dlp->dup != blkno)
119	continue;
120	dlp->dup = duplist->dup;
121	dlp = duplist;
122	duplist = duplist->next;
123	free((char *)dlp);
124	break;
125	}
126	if (dlp == 0) {
127	clrbmap(blkno);
128	n_blks--;
129	}
130	}
131	}
132	return (res);
133	}