[unix-history] / usr / src / sbin / fsck / pass5.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[] = "@(#)pass5.c	5.13 (Berkeley) 7/20/90";
#endif /* not lint */

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

pass5()
{
	int c, blk, frags, basesize, sumsize, mapsize, savednrpos;
	register struct fs *fs = &sblock;
	register struct cg *cg = &cgrp;
	daddr_t dbase, dmax;
	register daddr_t d;
	register long i, j;
	struct csum *cs;
	time_t now;
	struct csum cstotal;
	struct inodesc idesc[3];
	char buf[MAXBSIZE];
	register struct cg *newcg = (struct cg *)buf;
	struct ocg *ocg = (struct ocg *)buf;

	bzero((char *)newcg, (size_t)fs->fs_cgsize);
	newcg->cg_niblk = fs->fs_ipg;
	switch ((int)fs->fs_postblformat) {

	case FS_42POSTBLFMT:
		basesize = (char *)(&ocg->cg_btot[0]) - (char *)(&ocg->cg_link);
		sumsize = &ocg->cg_iused[0] - (char *)(&ocg->cg_btot[0]);
		mapsize = &ocg->cg_free[howmany(fs->fs_fpg, NBBY)] -
			(u_char *)&ocg->cg_iused[0];
		ocg->cg_magic = CG_MAGIC;
		savednrpos = fs->fs_nrpos;
		fs->fs_nrpos = 8;
		break;

	case FS_DYNAMICPOSTBLFMT:
		newcg->cg_btotoff =
		 	&newcg->cg_space[0] - (u_char *)(&newcg->cg_link);
		newcg->cg_boff =
			newcg->cg_btotoff + fs->fs_cpg * sizeof(long);
		newcg->cg_iusedoff = newcg->cg_boff + 
			fs->fs_cpg * fs->fs_nrpos * sizeof(short);
		newcg->cg_freeoff =
			newcg->cg_iusedoff + howmany(fs->fs_ipg, NBBY);
		newcg->cg_nextfreeoff = newcg->cg_freeoff +
			howmany(fs->fs_cpg * fs->fs_spc / NSPF(fs),
				NBBY);
		newcg->cg_magic = CG_MAGIC;
		basesize = &newcg->cg_space[0] - (u_char *)(&newcg->cg_link);
		sumsize = newcg->cg_iusedoff - newcg->cg_btotoff;
		mapsize = newcg->cg_nextfreeoff - newcg->cg_iusedoff;
		break;

	default:
		errexit("UNKNOWN ROTATIONAL TABLE FORMAT %d\n",
			fs->fs_postblformat);
	}
	bzero((char *)&idesc[0], sizeof idesc);
	for (i = 0; i < 3; i++)
		idesc[i].id_type = ADDR;
	bzero((char *)&cstotal, sizeof(struct csum));
	(void)time(&now);
	j = blknum(fs, fs->fs_size + fs->fs_frag - 1);
	for (i = fs->fs_size; i < j; i++)
		setbmap(i);
	for (c = 0; c < fs->fs_ncg; c++) {
		getblk(&cgblk, cgtod(fs, c), fs->fs_cgsize);
		if (!cg_chkmagic(cg))
			pfatal("CG %d: BAD MAGIC NUMBER\n", c);
		dbase = cgbase(fs, c);
		dmax = dbase + fs->fs_fpg;
		if (dmax > fs->fs_size)
			dmax = fs->fs_size;
		if (now > cg->cg_time)
			newcg->cg_time = cg->cg_time;
		else
			newcg->cg_time = now;
		newcg->cg_cgx = c;
		if (c == fs->fs_ncg - 1)
			newcg->cg_ncyl = fs->fs_ncyl % fs->fs_cpg;
		else
			newcg->cg_ncyl = fs->fs_cpg;
		newcg->cg_ndblk = dmax - dbase;
		newcg->cg_cs.cs_ndir = 0;
		newcg->cg_cs.cs_nffree = 0;
		newcg->cg_cs.cs_nbfree = 0;
		newcg->cg_cs.cs_nifree = fs->fs_ipg;
		if (cg->cg_rotor < newcg->cg_ndblk)
			newcg->cg_rotor = cg->cg_rotor;
		else
			newcg->cg_rotor = 0;
		if (cg->cg_frotor < newcg->cg_ndblk)
			newcg->cg_frotor = cg->cg_frotor;
		else
			newcg->cg_frotor = 0;
		if (cg->cg_irotor < newcg->cg_niblk)
			newcg->cg_irotor = cg->cg_irotor;
		else
			newcg->cg_irotor = 0;
		bzero((char *)&newcg->cg_frsum[0], sizeof newcg->cg_frsum);
		bzero((char *)&cg_blktot(newcg)[0],
		      (size_t)(sumsize + mapsize));
		if (fs->fs_postblformat == FS_42POSTBLFMT)
			ocg->cg_magic = CG_MAGIC;
		j = fs->fs_ipg * c;
		for (i = 0; i < fs->fs_ipg; j++, i++) {
			switch (statemap[j]) {

			case USTATE:
				break;

			case DSTATE:
			case DCLEAR:
			case DFOUND:
				newcg->cg_cs.cs_ndir++;
				/* fall through */

			case FSTATE:
			case FCLEAR:
				newcg->cg_cs.cs_nifree--;
				setbit(cg_inosused(newcg), i);
				break;

			default:
				if (j < ROOTINO)
					break;
				errexit("BAD STATE %d FOR INODE I=%d",
				    statemap[j], j);
			}
		}
		if (c == 0)
			for (i = 0; i < ROOTINO; i++) {
				setbit(cg_inosused(newcg), i);
				newcg->cg_cs.cs_nifree--;
			}
		for (i = 0, d = dbase;
		     d < dmax;
		     d += fs->fs_frag, i += fs->fs_frag) {
			frags = 0;
			for (j = 0; j < fs->fs_frag; j++) {
				if (testbmap(d + j))
					continue;
				setbit(cg_blksfree(newcg), i + j);
				frags++;
			}
			if (frags == fs->fs_frag) {
				newcg->cg_cs.cs_nbfree++;
				j = cbtocylno(fs, i);
				cg_blktot(newcg)[j]++;
				cg_blks(fs, newcg, j)[cbtorpos(fs, i)]++;
			} else if (frags > 0) {
				newcg->cg_cs.cs_nffree += frags;
				blk = blkmap(fs, cg_blksfree(newcg), i);
				fragacct(fs, blk, newcg->cg_frsum, 1);
			}
		}
		cstotal.cs_nffree += newcg->cg_cs.cs_nffree;
		cstotal.cs_nbfree += newcg->cg_cs.cs_nbfree;
		cstotal.cs_nifree += newcg->cg_cs.cs_nifree;
		cstotal.cs_ndir += newcg->cg_cs.cs_ndir;
		cs = &fs->fs_cs(fs, c);
		if (bcmp((char *)&newcg->cg_cs, (char *)cs, sizeof *cs) != 0 &&
		    dofix(&idesc[0], "FREE BLK COUNT(S) WRONG IN SUPERBLK")) {
			bcopy((char *)&newcg->cg_cs, (char *)cs, sizeof *cs);
			sbdirty();
		}
		if (cvtflag) {
			bcopy((char *)newcg, (char *)cg, (size_t)fs->fs_cgsize);
			cgdirty();
			continue;
		}
		if (bcmp(cg_inosused(newcg),
			 cg_inosused(cg), mapsize) != 0 &&
		    dofix(&idesc[1], "BLK(S) MISSING IN BIT MAPS")) {
			bcopy(cg_inosused(newcg), cg_inosused(cg),
			      (size_t)mapsize);
			cgdirty();
		}
		if ((bcmp((char *)newcg, (char *)cg, basesize) != 0 ||
		     bcmp((char *)&cg_blktot(newcg)[0],
			  (char *)&cg_blktot(cg)[0], sumsize) != 0) &&
		    dofix(&idesc[2], "SUMMARY INFORMATION BAD")) {
			bcopy((char *)newcg, (char *)cg, (size_t)basesize);
			bcopy((char *)&cg_blktot(newcg)[0],
			      (char *)&cg_blktot(cg)[0], (size_t)sumsize);
			cgdirty();
		}
	}
	if (fs->fs_postblformat == FS_42POSTBLFMT)
		fs->fs_nrpos = savednrpos;
	if (bcmp((char *)&cstotal, (char *)&fs->fs_cstotal, sizeof *cs) != 0
	    && dofix(&idesc[0], "FREE BLK COUNT(S) WRONG IN SUPERBLK")) {
		bcopy((char *)&cstotal, (char *)&fs->fs_cstotal, sizeof *cs);
		fs->fs_ronly = 0;
		fs->fs_fmod = 0;
		sbdirty();
	}
}
Commit	Line	Data
702f0073 WJ	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[] = "@(#)pass5.c 5.13 (Berkeley) 7/20/90";
	36	#endif /* not lint */
	37
	38	#include <sys/param.h>
	39	#include <ufs/dinode.h>
	40	#include <ufs/fs.h>
	41	#include <string.h>
	42	#include "fsck.h"
	43
	44	pass5()
	45	{
	46	int c, blk, frags, basesize, sumsize, mapsize, savednrpos;
	47	register struct fs *fs = &sblock;
	48	register struct cg *cg = &cgrp;
	49	daddr_t dbase, dmax;
	50	register daddr_t d;
	51	register long i, j;
	52	struct csum *cs;
	53	time_t now;
	54	struct csum cstotal;
	55	struct inodesc idesc[3];
	56	char buf[MAXBSIZE];
	57	register struct cg newcg = (struct cg )buf;
	58	struct ocg ocg = (struct ocg )buf;
	59
	60	bzero((char *)newcg, (size_t)fs->fs_cgsize);
	61	newcg->cg_niblk = fs->fs_ipg;
	62	switch ((int)fs->fs_postblformat) {
	63
	64	case FS_42POSTBLFMT:
65	basesize = (char )(&ocg->cg_btot[0]) - (char )(&ocg->cg_link);
66	sumsize = &ocg->cg_iused[0] - (char *)(&ocg->cg_btot[0]);
67	mapsize = &ocg->cg_free[howmany(fs->fs_fpg, NBBY)] -
68	(u_char *)&ocg->cg_iused[0];
69	ocg->cg_magic = CG_MAGIC;
70	savednrpos = fs->fs_nrpos;
71	fs->fs_nrpos = 8;
72	break;
73
74	case FS_DYNAMICPOSTBLFMT:
75	newcg->cg_btotoff =
76	&newcg->cg_space[0] - (u_char *)(&newcg->cg_link);
77	newcg->cg_boff =
78	newcg->cg_btotoff + fs->fs_cpg * sizeof(long);
79	newcg->cg_iusedoff = newcg->cg_boff +
80	fs->fs_cpg * fs->fs_nrpos * sizeof(short);
81	newcg->cg_freeoff =
82	newcg->cg_iusedoff + howmany(fs->fs_ipg, NBBY);
83	newcg->cg_nextfreeoff = newcg->cg_freeoff +
84	howmany(fs->fs_cpg * fs->fs_spc / NSPF(fs),
85	NBBY);
86	newcg->cg_magic = CG_MAGIC;
87	basesize = &newcg->cg_space[0] - (u_char *)(&newcg->cg_link);
88	sumsize = newcg->cg_iusedoff - newcg->cg_btotoff;
89	mapsize = newcg->cg_nextfreeoff - newcg->cg_iusedoff;
90	break;
91
92	default:
93	errexit("UNKNOWN ROTATIONAL TABLE FORMAT %d\n",
94	fs->fs_postblformat);
95	}
96	bzero((char *)&idesc[0], sizeof idesc);
97	for (i = 0; i < 3; i++)
98	idesc[i].id_type = ADDR;
99	bzero((char *)&cstotal, sizeof(struct csum));
100	(void)time(&now);
101	j = blknum(fs, fs->fs_size + fs->fs_frag - 1);
102	for (i = fs->fs_size; i < j; i++)
103	setbmap(i);
104	for (c = 0; c < fs->fs_ncg; c++) {
105	getblk(&cgblk, cgtod(fs, c), fs->fs_cgsize);
106	if (!cg_chkmagic(cg))
107	pfatal("CG %d: BAD MAGIC NUMBER\n", c);
108	dbase = cgbase(fs, c);
109	dmax = dbase + fs->fs_fpg;
110	if (dmax > fs->fs_size)
111	dmax = fs->fs_size;
112	if (now > cg->cg_time)
113	newcg->cg_time = cg->cg_time;
114	else
115	newcg->cg_time = now;
116	newcg->cg_cgx = c;
117	if (c == fs->fs_ncg - 1)
118	newcg->cg_ncyl = fs->fs_ncyl % fs->fs_cpg;
119	else
120	newcg->cg_ncyl = fs->fs_cpg;
121	newcg->cg_ndblk = dmax - dbase;
122	newcg->cg_cs.cs_ndir = 0;
123	newcg->cg_cs.cs_nffree = 0;
124	newcg->cg_cs.cs_nbfree = 0;
125	newcg->cg_cs.cs_nifree = fs->fs_ipg;
126	if (cg->cg_rotor < newcg->cg_ndblk)
127	newcg->cg_rotor = cg->cg_rotor;
128	else
129	newcg->cg_rotor = 0;
130	if (cg->cg_frotor < newcg->cg_ndblk)
131	newcg->cg_frotor = cg->cg_frotor;
132	else
133	newcg->cg_frotor = 0;
134	if (cg->cg_irotor < newcg->cg_niblk)
135	newcg->cg_irotor = cg->cg_irotor;
136	else
137	newcg->cg_irotor = 0;
138	bzero((char *)&newcg->cg_frsum[0], sizeof newcg->cg_frsum);
139	bzero((char *)&cg_blktot(newcg)[0],
140	(size_t)(sumsize + mapsize));
141	if (fs->fs_postblformat == FS_42POSTBLFMT)
142	ocg->cg_magic = CG_MAGIC;
143	j = fs->fs_ipg * c;
144	for (i = 0; i < fs->fs_ipg; j++, i++) {
145	switch (statemap[j]) {
146
147	case USTATE:
148	break;
149
150	case DSTATE:
151	case DCLEAR:
152	case DFOUND:
153	newcg->cg_cs.cs_ndir++;
154	/* fall through */
155
156	case FSTATE:
157	case FCLEAR:
158	newcg->cg_cs.cs_nifree--;
159	setbit(cg_inosused(newcg), i);
160	break;
161
162	default:
163	if (j < ROOTINO)
164	break;
165	errexit("BAD STATE %d FOR INODE I=%d",
166	statemap[j], j);
167	}
168	}
169	if (c == 0)
170	for (i = 0; i < ROOTINO; i++) {
171	setbit(cg_inosused(newcg), i);
172	newcg->cg_cs.cs_nifree--;
173	}
174	for (i = 0, d = dbase;
175	d < dmax;
176	d += fs->fs_frag, i += fs->fs_frag) {
177	frags = 0;
178	for (j = 0; j < fs->fs_frag; j++) {
179	if (testbmap(d + j))
180	continue;
181	setbit(cg_blksfree(newcg), i + j);
182	frags++;
183	}
184	if (frags == fs->fs_frag) {
185	newcg->cg_cs.cs_nbfree++;
186	j = cbtocylno(fs, i);
187	cg_blktot(newcg)[j]++;
188	cg_blks(fs, newcg, j)[cbtorpos(fs, i)]++;
189	} else if (frags > 0) {
190	newcg->cg_cs.cs_nffree += frags;
191	blk = blkmap(fs, cg_blksfree(newcg), i);
192	fragacct(fs, blk, newcg->cg_frsum, 1);
193	}
194	}
195	cstotal.cs_nffree += newcg->cg_cs.cs_nffree;
196	cstotal.cs_nbfree += newcg->cg_cs.cs_nbfree;
197	cstotal.cs_nifree += newcg->cg_cs.cs_nifree;
198	cstotal.cs_ndir += newcg->cg_cs.cs_ndir;
199	cs = &fs->fs_cs(fs, c);
200	if (bcmp((char )&newcg->cg_cs, (char )cs, sizeof *cs) != 0 &&
201	dofix(&idesc[0], "FREE BLK COUNT(S) WRONG IN SUPERBLK")) {
202	bcopy((char )&newcg->cg_cs, (char )cs, sizeof *cs);
203	sbdirty();
204	}
205	if (cvtflag) {
206	bcopy((char )newcg, (char )cg, (size_t)fs->fs_cgsize);
207	cgdirty();
208	continue;
209	}
210	if (bcmp(cg_inosused(newcg),
211	cg_inosused(cg), mapsize) != 0 &&
212	dofix(&idesc[1], "BLK(S) MISSING IN BIT MAPS")) {
213	bcopy(cg_inosused(newcg), cg_inosused(cg),
214	(size_t)mapsize);
215	cgdirty();
216	}
217	if ((bcmp((char )newcg, (char )cg, basesize) != 0 \|\|
218	bcmp((char *)&cg_blktot(newcg)[0],
219	(char *)&cg_blktot(cg)[0], sumsize) != 0) &&
220	dofix(&idesc[2], "SUMMARY INFORMATION BAD")) {
221	bcopy((char )newcg, (char )cg, (size_t)basesize);
222	bcopy((char *)&cg_blktot(newcg)[0],
223	(char *)&cg_blktot(cg)[0], (size_t)sumsize);
224	cgdirty();
225	}
226	}
227	if (fs->fs_postblformat == FS_42POSTBLFMT)
228	fs->fs_nrpos = savednrpos;
229	if (bcmp((char )&cstotal, (char )&fs->fs_cstotal, sizeof *cs) != 0
230	&& dofix(&idesc[0], "FREE BLK COUNT(S) WRONG IN SUPERBLK")) {
231	bcopy((char )&cstotal, (char )&fs->fs_cstotal, sizeof *cs);
232	fs->fs_ronly = 0;
233	fs->fs_fmod = 0;
234	sbdirty();
235	}
236	}