2017-11-20 19:49:47 +00:00
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/*-
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* SPDX-License-Identifier: BSD-3-Clause
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*
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1994-05-26 06:35:07 +00:00
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* Copyright (c) 1980, 1986, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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2017-02-28 23:42:47 +00:00
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* 3. Neither the name of the University nor the names of its contributors
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1994-05-26 06:35:07 +00:00
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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1998-12-03 02:41:11 +00:00
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#if 0
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2003-05-03 18:41:59 +00:00
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#ifndef lint
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1997-03-11 12:20:21 +00:00
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static const char sccsid[] = "@(#)setup.c 8.10 (Berkeley) 5/9/95";
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1994-05-26 06:35:07 +00:00
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#endif /* not lint */
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2003-05-03 18:41:59 +00:00
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#endif
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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1994-05-26 06:35:07 +00:00
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#include <sys/param.h>
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2017-09-04 20:19:36 +00:00
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#include <sys/disk.h>
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1994-05-26 06:35:07 +00:00
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#include <sys/stat.h>
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2002-08-16 16:08:36 +00:00
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#define FSTYPENAMES
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1994-05-26 06:35:07 +00:00
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#include <sys/disklabel.h>
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#include <sys/file.h>
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2001-11-17 23:48:21 +00:00
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#include <sys/sysctl.h>
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1997-03-11 12:20:21 +00:00
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#include <ufs/ufs/dinode.h>
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#include <ufs/ffs/fs.h>
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#include <ctype.h>
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#include <err.h>
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1994-05-26 06:35:07 +00:00
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#include <errno.h>
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2002-09-25 04:06:37 +00:00
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#include <limits.h>
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2002-07-31 12:01:14 +00:00
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#include <stdint.h>
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1994-05-26 06:35:07 +00:00
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#include <string.h>
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2018-01-24 23:57:40 +00:00
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#include <libufs.h>
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1997-03-11 12:20:21 +00:00
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1994-05-26 06:35:07 +00:00
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#include "fsck.h"
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2018-01-24 23:57:40 +00:00
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struct uufsd disk;
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1994-05-26 06:35:07 +00:00
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struct bufarea asblk;
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#define altsblock (*asblk.b_un.b_fs)
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#define POWEROF2(num) (((num) & ((num) - 1)) == 0)
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2017-08-09 05:17:21 +00:00
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static int calcsb(char *dev, int devfd, struct fs *fs);
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static void saverecovery(int readfd, int writefd);
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static int chkrecovery(int devfd);
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1997-03-11 12:20:21 +00:00
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/*
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* Read in a superblock finding an alternate if necessary.
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2002-08-21 18:11:48 +00:00
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* Return 1 if successful, 0 if unsuccessful, -1 if file system
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2009-01-30 18:33:05 +00:00
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* is already clean (ckclean and preen mode only).
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1997-03-11 12:20:21 +00:00
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*/
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1995-04-02 14:52:29 +00:00
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int
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2002-03-20 22:57:10 +00:00
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setup(char *dev)
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1994-05-26 06:35:07 +00:00
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{
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2017-08-09 05:17:21 +00:00
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long cg, asked, i, j;
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2001-04-16 22:22:21 +00:00
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long bmapsize;
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1994-05-26 06:35:07 +00:00
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struct stat statb;
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2017-08-09 05:17:21 +00:00
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struct fs proto;
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2001-11-17 23:48:21 +00:00
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size_t size;
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1994-05-26 06:35:07 +00:00
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havesb = 0;
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fswritefd = -1;
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2000-07-06 02:03:11 +00:00
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cursnapshot = 0;
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1994-05-26 06:35:07 +00:00
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if (stat(dev, &statb) < 0) {
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printf("Can't stat %s: %s\n", dev, strerror(errno));
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2001-03-21 09:48:03 +00:00
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if (bkgrdflag) {
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unlink(snapname);
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bkgrdflag = 0;
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}
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1994-05-26 06:35:07 +00:00
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return (0);
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}
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1999-11-27 20:02:27 +00:00
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if ((statb.st_mode & S_IFMT) != S_IFCHR &&
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(statb.st_mode & S_IFMT) != S_IFBLK) {
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2001-03-21 09:48:03 +00:00
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if (bkgrdflag != 0 && (statb.st_flags & SF_SNAPSHOT) == 0) {
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unlink(snapname);
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printf("background fsck lacks a snapshot\n");
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exit(EEXIT);
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}
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if ((statb.st_flags & SF_SNAPSHOT) != 0 && cvtlevel == 0) {
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2000-07-06 02:03:11 +00:00
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cursnapshot = statb.st_ino;
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} else {
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2001-03-21 09:48:03 +00:00
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if (cvtlevel == 0 ||
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(statb.st_flags & SF_SNAPSHOT) == 0) {
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if (preen && bkgrdflag) {
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unlink(snapname);
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bkgrdflag = 0;
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}
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pfatal("%s is not a disk device", dev);
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if (reply("CONTINUE") == 0) {
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if (bkgrdflag) {
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unlink(snapname);
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bkgrdflag = 0;
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}
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return (0);
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}
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} else {
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if (bkgrdflag) {
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unlink(snapname);
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bkgrdflag = 0;
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}
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pfatal("cannot convert a snapshot");
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exit(EEXIT);
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}
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2000-07-06 02:03:11 +00:00
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}
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1994-05-26 06:35:07 +00:00
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}
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2018-01-24 23:57:40 +00:00
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if ((fsreadfd = open(dev, O_RDONLY)) < 0 ||
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2018-11-25 18:09:39 +00:00
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ufs_disk_fillout_blank(&disk, dev) < 0) {
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2001-03-21 09:48:03 +00:00
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if (bkgrdflag) {
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unlink(snapname);
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bkgrdflag = 0;
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}
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1994-05-26 06:35:07 +00:00
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printf("Can't open %s: %s\n", dev, strerror(errno));
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return (0);
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}
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2001-03-21 09:48:03 +00:00
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if (bkgrdflag) {
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unlink(snapname);
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size = MIBSIZE;
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if (sysctlnametomib("vfs.ffs.adjrefcnt", adjrefcnt, &size) < 0||
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sysctlnametomib("vfs.ffs.adjblkcnt", adjblkcnt, &size) < 0||
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sysctlnametomib("vfs.ffs.freefiles", freefiles, &size) < 0||
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sysctlnametomib("vfs.ffs.freedirs", freedirs, &size) < 0 ||
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sysctlnametomib("vfs.ffs.freeblks", freeblks, &size) < 0) {
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pfatal("kernel lacks background fsck support\n");
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exit(EEXIT);
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}
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2005-03-07 08:42:49 +00:00
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/*
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* When kernel is lack of runtime bgfsck superblock summary
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* adjustment functionality, it does not mean we can not
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* continue, as old kernels will recompute the summary at
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* mount time. However, it will be an unexpected softupdates
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* inconsistency if it turns out that the summary is still
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* incorrect. Set a flag so subsequent operation can know
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* this.
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*/
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bkgrdsumadj = 1;
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if (sysctlnametomib("vfs.ffs.adjndir", adjndir, &size) < 0 ||
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sysctlnametomib("vfs.ffs.adjnbfree", adjnbfree, &size) < 0 ||
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sysctlnametomib("vfs.ffs.adjnifree", adjnifree, &size) < 0 ||
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sysctlnametomib("vfs.ffs.adjnffree", adjnffree, &size) < 0 ||
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sysctlnametomib("vfs.ffs.adjnumclusters", adjnumclusters, &size) < 0) {
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bkgrdsumadj = 0;
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pwarn("kernel lacks runtime superblock summary adjustment support");
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}
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2001-03-21 09:48:03 +00:00
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cmd.version = FFS_CMD_VERSION;
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cmd.handle = fsreadfd;
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fswritefd = -1;
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}
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1994-05-26 06:35:07 +00:00
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if (preen == 0)
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printf("** %s", dev);
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2001-03-21 09:48:03 +00:00
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if (bkgrdflag == 0 &&
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2018-01-24 23:57:40 +00:00
|
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(nflag || ufs_disk_write(&disk) < 0 ||
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(fswritefd = dup(disk.d_fd)) < 0)) {
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1994-05-26 06:35:07 +00:00
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fswritefd = -1;
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if (preen)
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pfatal("NO WRITE ACCESS");
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printf(" (NO WRITE)");
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}
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if (preen == 0)
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printf("\n");
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/*
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* Read in the superblock, looking for alternates if necessary
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*/
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if (readsb(1) == 0) {
|
1997-03-11 12:20:21 +00:00
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skipclean = 0;
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2017-08-09 05:17:21 +00:00
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if (bflag || preen || calcsb(dev, fsreadfd, &proto) == 0)
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1994-05-26 06:35:07 +00:00
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return(0);
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2017-08-09 05:17:21 +00:00
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if (reply("LOOK FOR ALTERNATE SUPERBLOCKS") == 0)
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return (0);
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for (cg = 0; cg < proto.fs_ncg; cg++) {
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bflag = fsbtodb(&proto, cgsblock(&proto, cg));
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if (readsb(0) != 0)
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break;
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}
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if (cg >= proto.fs_ncg) {
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printf("%s %s\n%s %s\n%s %s\n",
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"SEARCH FOR ALTERNATE SUPER-BLOCK",
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"FAILED. YOU MUST USE THE",
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"-b OPTION TO FSCK TO SPECIFY THE",
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"LOCATION OF AN ALTERNATE",
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"SUPER-BLOCK TO SUPPLY NEEDED",
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"INFORMATION; SEE fsck_ffs(8).");
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bflag = 0;
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return(0);
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}
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pwarn("USING ALTERNATE SUPERBLOCK AT %jd\n", bflag);
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bflag = 0;
|
1994-05-26 06:35:07 +00:00
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}
|
2018-12-05 06:31:50 +00:00
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/* Save copy of things needed by libufs */
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memcpy(&disk.d_fs, &sblock, sblock.fs_sbsize);
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disk.d_ufs = (sblock.fs_magic == FS_UFS1_MAGIC) ? 1 : 2;
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disk.d_bsize = sblock.fs_fsize / fsbtodb(&sblock, 1);
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disk.d_sblock = sblock.fs_sblockloc / disk.d_bsize;
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disk.d_sbcsum = sblock.fs_csp;
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|
2009-01-30 18:33:05 +00:00
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if (skipclean && ckclean && sblock.fs_clean) {
|
2003-08-01 11:31:19 +00:00
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pwarn("FILE SYSTEM CLEAN; SKIPPING CHECKS\n");
|
1998-12-03 02:27:35 +00:00
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return (-1);
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}
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1994-05-26 06:35:07 +00:00
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maxfsblock = sblock.fs_size;
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maxino = sblock.fs_ncg * sblock.fs_ipg;
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/*
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* Check and potentially fix certain fields in the super block.
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*/
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if (sblock.fs_optim != FS_OPTTIME && sblock.fs_optim != FS_OPTSPACE) {
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pfatal("UNDEFINED OPTIMIZATION IN SUPERBLOCK");
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if (reply("SET TO DEFAULT") == 1) {
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sblock.fs_optim = FS_OPTTIME;
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sbdirty();
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}
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}
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if ((sblock.fs_minfree < 0 || sblock.fs_minfree > 99)) {
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pfatal("IMPOSSIBLE MINFREE=%d IN SUPERBLOCK",
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sblock.fs_minfree);
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if (reply("SET TO DEFAULT") == 1) {
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sblock.fs_minfree = 10;
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sbdirty();
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}
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}
|
2002-06-21 06:18:05 +00:00
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if (sblock.fs_magic == FS_UFS1_MAGIC &&
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sblock.fs_old_inodefmt < FS_44INODEFMT) {
|
2002-08-21 18:11:48 +00:00
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pwarn("Format of file system is too old.\n");
|
2002-05-12 23:44:15 +00:00
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pwarn("Must update to modern format using a version of fsck\n");
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pfatal("from before 2002 with the command ``fsck -c 2''\n");
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exit(EEXIT);
|
1994-05-26 06:35:07 +00:00
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}
|
1997-03-11 12:20:21 +00:00
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if (asblk.b_dirty && !bflag) {
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memmove(&altsblock, &sblock, (size_t)sblock.fs_sbsize);
|
1994-05-26 06:35:07 +00:00
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flush(fswritefd, &asblk);
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}
|
2017-08-09 05:17:21 +00:00
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|
|
if (preen == 0 && yflag == 0 && sblock.fs_magic == FS_UFS2_MAGIC &&
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|
|
fswritefd != -1 && chkrecovery(fsreadfd) == 0 &&
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reply("SAVE DATA TO FIND ALTERNATE SUPERBLOCKS") != 0)
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saverecovery(fsreadfd, fswritefd);
|
1994-05-26 06:35:07 +00:00
|
|
|
/*
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* read in the summary info.
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*/
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|
asked = 0;
|
2013-03-23 20:00:02 +00:00
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|
sblock.fs_csp = Calloc(1, sblock.fs_cssize);
|
2004-01-26 15:05:30 +00:00
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|
|
if (sblock.fs_csp == NULL) {
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|
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printf("cannot alloc %u bytes for cg summary info\n",
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|
|
(unsigned)sblock.fs_cssize);
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goto badsb;
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}
|
1994-05-26 06:35:07 +00:00
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|
|
for (i = 0, j = 0; i < sblock.fs_cssize; i += sblock.fs_bsize, j++) {
|
2016-05-02 01:28:21 +00:00
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|
|
size = MIN(sblock.fs_cssize - i, sblock.fs_bsize);
|
2013-02-24 06:44:29 +00:00
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|
|
readcnt[sblk.b_type]++;
|
2006-10-31 22:06:56 +00:00
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|
|
if (blread(fsreadfd, (char *)sblock.fs_csp + i,
|
1994-05-26 06:35:07 +00:00
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|
|
fsbtodb(&sblock, sblock.fs_csaddr + j * sblock.fs_frag),
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|
|
size) != 0 && !asked) {
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|
|
|
pfatal("BAD SUMMARY INFORMATION");
|
1998-03-08 09:59:44 +00:00
|
|
|
if (reply("CONTINUE") == 0) {
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|
|
|
ckfini(0);
|
1997-03-11 12:20:21 +00:00
|
|
|
exit(EEXIT);
|
1998-03-08 09:59:44 +00:00
|
|
|
}
|
1994-05-26 06:35:07 +00:00
|
|
|
asked++;
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|
|
|
}
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|
|
|
}
|
|
|
|
/*
|
|
|
|
* allocate and initialize the necessary maps
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|
|
|
*/
|
2002-09-25 04:06:37 +00:00
|
|
|
bmapsize = roundup(howmany(maxfsblock, CHAR_BIT), sizeof(short));
|
2013-03-23 20:00:02 +00:00
|
|
|
blockmap = Calloc((unsigned)bmapsize, sizeof (char));
|
1994-05-26 06:35:07 +00:00
|
|
|
if (blockmap == NULL) {
|
|
|
|
printf("cannot alloc %u bytes for blockmap\n",
|
|
|
|
(unsigned)bmapsize);
|
|
|
|
goto badsb;
|
|
|
|
}
|
2017-04-22 14:50:11 +00:00
|
|
|
inostathead = Calloc(sblock.fs_ncg, sizeof(struct inostatlist));
|
1998-12-03 02:27:35 +00:00
|
|
|
if (inostathead == NULL) {
|
|
|
|
printf("cannot alloc %u bytes for inostathead\n",
|
|
|
|
(unsigned)(sizeof(struct inostatlist) * (sblock.fs_ncg)));
|
1994-05-26 06:35:07 +00:00
|
|
|
goto badsb;
|
|
|
|
}
|
2002-12-02 19:30:37 +00:00
|
|
|
numdirs = MAX(sblock.fs_cstotal.cs_ndir, 128);
|
2000-02-28 20:02:41 +00:00
|
|
|
dirhash = numdirs;
|
1994-05-26 06:35:07 +00:00
|
|
|
inplast = 0;
|
|
|
|
listmax = numdirs + 10;
|
2017-04-22 14:50:11 +00:00
|
|
|
inpsort = (struct inoinfo **)Calloc(listmax, sizeof(struct inoinfo *));
|
|
|
|
inphead = (struct inoinfo **)Calloc(numdirs, sizeof(struct inoinfo *));
|
1994-05-26 06:35:07 +00:00
|
|
|
if (inpsort == NULL || inphead == NULL) {
|
2002-07-31 12:01:14 +00:00
|
|
|
printf("cannot alloc %ju bytes for inphead\n",
|
|
|
|
(uintmax_t)numdirs * sizeof(struct inoinfo *));
|
1994-05-26 06:35:07 +00:00
|
|
|
goto badsb;
|
|
|
|
}
|
|
|
|
bufinit();
|
1998-03-08 09:59:44 +00:00
|
|
|
if (sblock.fs_flags & FS_DOSOFTDEP)
|
|
|
|
usedsoftdep = 1;
|
|
|
|
else
|
|
|
|
usedsoftdep = 0;
|
1994-05-26 06:35:07 +00:00
|
|
|
return (1);
|
|
|
|
|
|
|
|
badsb:
|
1997-03-11 12:20:21 +00:00
|
|
|
ckfini(0);
|
1994-05-26 06:35:07 +00:00
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Read in the super block and its summary info.
|
|
|
|
*/
|
2001-04-16 22:22:21 +00:00
|
|
|
int
|
2002-03-20 22:57:10 +00:00
|
|
|
readsb(int listerr)
|
1994-05-26 06:35:07 +00:00
|
|
|
{
|
2018-01-26 00:58:32 +00:00
|
|
|
off_t super;
|
|
|
|
int bad, ret;
|
|
|
|
struct fs *fs;
|
1994-05-26 06:35:07 +00:00
|
|
|
|
2018-01-26 00:58:32 +00:00
|
|
|
super = bflag ? bflag * dev_bsize : -1;
|
|
|
|
readcnt[sblk.b_type]++;
|
|
|
|
if ((ret = sbget(fsreadfd, &fs, super)) != 0) {
|
|
|
|
switch (ret) {
|
|
|
|
case EINVAL:
|
2018-11-25 18:09:39 +00:00
|
|
|
/* Superblock check-hash failed */
|
|
|
|
return (0);
|
2018-01-26 00:58:32 +00:00
|
|
|
case ENOENT:
|
|
|
|
if (bflag)
|
|
|
|
fprintf(stderr, "%jd is not a file system "
|
|
|
|
"superblock\n", super / dev_bsize);
|
|
|
|
else
|
|
|
|
fprintf(stderr, "Cannot find file system "
|
|
|
|
"superblock\n");
|
2002-12-02 19:30:37 +00:00
|
|
|
return (0);
|
2018-01-26 00:58:32 +00:00
|
|
|
case EIO:
|
|
|
|
default:
|
|
|
|
fprintf(stderr, "I/O error reading %jd\n",
|
|
|
|
super / dev_bsize);
|
2002-06-21 06:18:05 +00:00
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
}
|
2018-01-26 00:58:32 +00:00
|
|
|
memcpy(&sblock, fs, fs->fs_sbsize);
|
|
|
|
free(fs);
|
1994-05-26 06:35:07 +00:00
|
|
|
/*
|
2002-08-21 18:11:48 +00:00
|
|
|
* Compute block size that the file system is based on,
|
1994-05-26 06:35:07 +00:00
|
|
|
* according to fsbtodb, and adjust superblock block number
|
|
|
|
* so we can tell if this is an alternate later.
|
|
|
|
*/
|
|
|
|
dev_bsize = sblock.fs_fsize / fsbtodb(&sblock, 1);
|
2018-01-26 00:58:32 +00:00
|
|
|
sblk.b_bno = sblock.fs_sblockactualloc / dev_bsize;
|
2002-06-21 06:18:05 +00:00
|
|
|
sblk.b_size = SBLOCKSIZE;
|
1994-05-26 06:35:07 +00:00
|
|
|
/*
|
2002-04-07 05:16:33 +00:00
|
|
|
* Compare all fields that should not differ in alternate super block.
|
1994-05-26 06:35:07 +00:00
|
|
|
* When an alternate super-block is specified this check is skipped.
|
|
|
|
*/
|
2017-08-07 21:23:59 +00:00
|
|
|
if (bflag)
|
|
|
|
goto out;
|
1994-05-26 06:35:07 +00:00
|
|
|
getblk(&asblk, cgsblock(&sblock, sblock.fs_ncg - 1), sblock.fs_sbsize);
|
|
|
|
if (asblk.b_errs)
|
|
|
|
return (0);
|
2017-08-07 21:23:59 +00:00
|
|
|
bad = 0;
|
|
|
|
#define CHK(x, y) \
|
|
|
|
if (altsblock.x != sblock.x) { \
|
|
|
|
bad++; \
|
|
|
|
if (listerr && debug) \
|
|
|
|
printf("SUPER BLOCK VS ALTERNATE MISMATCH %s: " y " vs " y "\n", \
|
|
|
|
#x, (intmax_t)sblock.x, (intmax_t)altsblock.x); \
|
|
|
|
}
|
|
|
|
CHK(fs_sblkno, "%jd");
|
|
|
|
CHK(fs_cblkno, "%jd");
|
|
|
|
CHK(fs_iblkno, "%jd");
|
|
|
|
CHK(fs_dblkno, "%jd");
|
|
|
|
CHK(fs_ncg, "%jd");
|
|
|
|
CHK(fs_bsize, "%jd");
|
|
|
|
CHK(fs_fsize, "%jd");
|
|
|
|
CHK(fs_frag, "%jd");
|
|
|
|
CHK(fs_bmask, "%#jx");
|
|
|
|
CHK(fs_fmask, "%#jx");
|
|
|
|
CHK(fs_bshift, "%jd");
|
|
|
|
CHK(fs_fshift, "%jd");
|
|
|
|
CHK(fs_fragshift, "%jd");
|
|
|
|
CHK(fs_fsbtodb, "%jd");
|
|
|
|
CHK(fs_sbsize, "%jd");
|
|
|
|
CHK(fs_nindir, "%jd");
|
|
|
|
CHK(fs_inopb, "%jd");
|
|
|
|
CHK(fs_cssize, "%jd");
|
|
|
|
CHK(fs_ipg, "%jd");
|
|
|
|
CHK(fs_fpg, "%jd");
|
|
|
|
CHK(fs_magic, "%#jx");
|
|
|
|
#undef CHK
|
|
|
|
if (bad) {
|
2017-08-07 21:23:54 +00:00
|
|
|
if (listerr == 0)
|
|
|
|
return (0);
|
|
|
|
if (preen)
|
|
|
|
printf("%s: ", cdevname);
|
|
|
|
printf(
|
|
|
|
"VALUES IN SUPER BLOCK LSB=%jd DISAGREE WITH THOSE IN\n"
|
2017-08-07 21:23:59 +00:00
|
|
|
"LAST ALTERNATE LSB=%jd\n",
|
2017-08-07 21:23:54 +00:00
|
|
|
sblk.b_bno, asblk.b_bno);
|
|
|
|
if (reply("IGNORE ALTERNATE SUPER BLOCK") == 0)
|
|
|
|
return (0);
|
1994-05-26 06:35:07 +00:00
|
|
|
}
|
2002-12-02 19:30:37 +00:00
|
|
|
out:
|
2002-06-21 06:18:05 +00:00
|
|
|
/*
|
|
|
|
* If not yet done, update UFS1 superblock with new wider fields.
|
|
|
|
*/
|
|
|
|
if (sblock.fs_magic == FS_UFS1_MAGIC &&
|
|
|
|
sblock.fs_maxbsize != sblock.fs_bsize) {
|
|
|
|
sblock.fs_maxbsize = sblock.fs_bsize;
|
|
|
|
sblock.fs_time = sblock.fs_old_time;
|
|
|
|
sblock.fs_size = sblock.fs_old_size;
|
|
|
|
sblock.fs_dsize = sblock.fs_old_dsize;
|
|
|
|
sblock.fs_csaddr = sblock.fs_old_csaddr;
|
|
|
|
sblock.fs_cstotal.cs_ndir = sblock.fs_old_cstotal.cs_ndir;
|
|
|
|
sblock.fs_cstotal.cs_nbfree = sblock.fs_old_cstotal.cs_nbfree;
|
|
|
|
sblock.fs_cstotal.cs_nifree = sblock.fs_old_cstotal.cs_nifree;
|
|
|
|
sblock.fs_cstotal.cs_nffree = sblock.fs_old_cstotal.cs_nffree;
|
|
|
|
}
|
1994-05-26 06:35:07 +00:00
|
|
|
havesb = 1;
|
|
|
|
return (1);
|
|
|
|
}
|
|
|
|
|
2001-04-23 21:39:14 +00:00
|
|
|
void
|
2002-03-20 22:57:10 +00:00
|
|
|
sblock_init(void)
|
2001-04-16 22:22:21 +00:00
|
|
|
{
|
|
|
|
|
|
|
|
fswritefd = -1;
|
|
|
|
fsmodified = 0;
|
|
|
|
lfdir = 0;
|
2013-02-24 06:44:29 +00:00
|
|
|
initbarea(&sblk, BT_SUPERBLK);
|
|
|
|
initbarea(&asblk, BT_SUPERBLK);
|
2013-03-23 20:00:02 +00:00
|
|
|
sblk.b_un.b_buf = Malloc(SBLOCKSIZE);
|
|
|
|
asblk.b_un.b_buf = Malloc(SBLOCKSIZE);
|
2001-04-16 22:22:21 +00:00
|
|
|
if (sblk.b_un.b_buf == NULL || asblk.b_un.b_buf == NULL)
|
|
|
|
errx(EEXIT, "cannot allocate space for superblock");
|
2015-01-06 05:28:37 +00:00
|
|
|
dev_bsize = secsize = DEV_BSIZE;
|
1994-05-26 06:35:07 +00:00
|
|
|
}
|
2017-08-09 05:17:21 +00:00
|
|
|
|
|
|
|
/*
|
|
|
|
* Calculate a prototype superblock based on information in the boot area.
|
|
|
|
* When done the cgsblock macro can be calculated and the fs_ncg field
|
|
|
|
* can be used. Do NOT attempt to use other macros without verifying that
|
|
|
|
* their needed information is available!
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
calcsb(char *dev, int devfd, struct fs *fs)
|
|
|
|
{
|
2017-09-04 20:19:36 +00:00
|
|
|
struct fsrecovery *fsr;
|
|
|
|
char *fsrbuf;
|
|
|
|
u_int secsize;
|
2017-08-09 05:17:21 +00:00
|
|
|
|
|
|
|
/*
|
|
|
|
* We need fragments-per-group and the partition-size.
|
|
|
|
*
|
|
|
|
* Newfs stores these details at the end of the boot block area
|
|
|
|
* at the start of the filesystem partition. If they have been
|
|
|
|
* overwritten by a boot block, we fail. But usually they are
|
|
|
|
* there and we can use them.
|
|
|
|
*/
|
2017-09-04 20:19:36 +00:00
|
|
|
if (ioctl(devfd, DIOCGSECTORSIZE, &secsize) == -1)
|
|
|
|
return (0);
|
|
|
|
fsrbuf = Malloc(secsize);
|
|
|
|
if (fsrbuf == NULL)
|
|
|
|
errx(EEXIT, "calcsb: cannot allocate recovery buffer");
|
|
|
|
if (blread(devfd, fsrbuf,
|
|
|
|
(SBLOCK_UFS2 - secsize) / dev_bsize, secsize) != 0)
|
|
|
|
return (0);
|
|
|
|
fsr = (struct fsrecovery *)&fsrbuf[secsize - sizeof *fsr];
|
|
|
|
if (fsr->fsr_magic != FS_UFS2_MAGIC)
|
2017-08-09 05:17:21 +00:00
|
|
|
return (0);
|
|
|
|
memset(fs, 0, sizeof(struct fs));
|
2017-09-04 20:19:36 +00:00
|
|
|
fs->fs_fpg = fsr->fsr_fpg;
|
|
|
|
fs->fs_fsbtodb = fsr->fsr_fsbtodb;
|
|
|
|
fs->fs_sblkno = fsr->fsr_sblkno;
|
|
|
|
fs->fs_magic = fsr->fsr_magic;
|
|
|
|
fs->fs_ncg = fsr->fsr_ncg;
|
|
|
|
free(fsrbuf);
|
2017-08-09 05:17:21 +00:00
|
|
|
return (1);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Check to see if recovery information exists.
|
2017-09-04 20:19:36 +00:00
|
|
|
* Return 1 if it exists or cannot be created.
|
|
|
|
* Return 0 if it does not exist and can be created.
|
2017-08-09 05:17:21 +00:00
|
|
|
*/
|
|
|
|
static int
|
|
|
|
chkrecovery(int devfd)
|
|
|
|
{
|
2017-09-04 20:19:36 +00:00
|
|
|
struct fsrecovery *fsr;
|
|
|
|
char *fsrbuf;
|
|
|
|
u_int secsize;
|
2017-08-09 05:17:21 +00:00
|
|
|
|
2017-09-04 20:19:36 +00:00
|
|
|
/*
|
|
|
|
* Could not determine if backup material exists, so do not
|
|
|
|
* offer to create it.
|
|
|
|
*/
|
|
|
|
if (ioctl(devfd, DIOCGSECTORSIZE, &secsize) == -1 ||
|
|
|
|
(fsrbuf = Malloc(secsize)) == NULL ||
|
|
|
|
blread(devfd, fsrbuf, (SBLOCK_UFS2 - secsize) / dev_bsize,
|
|
|
|
secsize) != 0)
|
|
|
|
return (1);
|
|
|
|
/*
|
|
|
|
* Recovery material has already been created, so do not
|
|
|
|
* need to create it again.
|
|
|
|
*/
|
|
|
|
fsr = (struct fsrecovery *)&fsrbuf[secsize - sizeof *fsr];
|
|
|
|
if (fsr->fsr_magic == FS_UFS2_MAGIC) {
|
|
|
|
free(fsrbuf);
|
|
|
|
return (1);
|
|
|
|
}
|
|
|
|
/*
|
|
|
|
* Recovery material has not been created and can be if desired.
|
|
|
|
*/
|
|
|
|
free(fsrbuf);
|
|
|
|
return (0);
|
2017-08-09 05:17:21 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Read the last sector of the boot block, replace the last
|
|
|
|
* 20 bytes with the recovery information, then write it back.
|
|
|
|
* The recovery information only works for UFS2 filesystems.
|
|
|
|
*/
|
|
|
|
static void
|
|
|
|
saverecovery(int readfd, int writefd)
|
|
|
|
{
|
2017-09-04 20:19:36 +00:00
|
|
|
struct fsrecovery *fsr;
|
|
|
|
char *fsrbuf;
|
|
|
|
u_int secsize;
|
2017-08-09 05:17:21 +00:00
|
|
|
|
|
|
|
if (sblock.fs_magic != FS_UFS2_MAGIC ||
|
2017-09-04 20:19:36 +00:00
|
|
|
ioctl(readfd, DIOCGSECTORSIZE, &secsize) == -1 ||
|
|
|
|
(fsrbuf = Malloc(secsize)) == NULL ||
|
|
|
|
blread(readfd, fsrbuf, (SBLOCK_UFS2 - secsize) / dev_bsize,
|
|
|
|
secsize) != 0) {
|
|
|
|
printf("RECOVERY DATA COULD NOT BE CREATED\n");
|
2017-08-09 05:17:21 +00:00
|
|
|
return;
|
2017-09-04 20:19:36 +00:00
|
|
|
}
|
|
|
|
fsr = (struct fsrecovery *)&fsrbuf[secsize - sizeof *fsr];
|
|
|
|
fsr->fsr_magic = sblock.fs_magic;
|
|
|
|
fsr->fsr_fpg = sblock.fs_fpg;
|
|
|
|
fsr->fsr_fsbtodb = sblock.fs_fsbtodb;
|
|
|
|
fsr->fsr_sblkno = sblock.fs_sblkno;
|
|
|
|
fsr->fsr_ncg = sblock.fs_ncg;
|
|
|
|
blwrite(writefd, fsrbuf, (SBLOCK_UFS2 - secsize) / secsize, secsize);
|
|
|
|
free(fsrbuf);
|
2017-08-09 05:17:21 +00:00
|
|
|
}
|