245 lines
6.3 KiB
C
245 lines
6.3 KiB
C
/* $NetBSD: badsect.c,v 1.16 1998/08/25 19:18:12 ross Exp $ */
|
|
|
|
/*
|
|
* Copyright (c) 1981, 1983, 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.
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
#ifndef lint
|
|
__COPYRIGHT("@(#) Copyright (c) 1981, 1983, 1993\n\
|
|
The Regents of the University of California. All rights reserved.\n");
|
|
#endif /* not lint */
|
|
|
|
#ifndef lint
|
|
#if 0
|
|
static char sccsid[] = "@(#)badsect.c 8.2 (Berkeley) 5/4/95";
|
|
#else
|
|
__RCSID("$NetBSD: badsect.c,v 1.16 1998/08/25 19:18:12 ross Exp $");
|
|
#endif
|
|
#endif /* not lint */
|
|
|
|
/*
|
|
* badsect
|
|
*
|
|
* Badsect takes a list of file-system relative sector numbers
|
|
* and makes files containing the blocks of which these sectors are a part.
|
|
* It can be used to contain sectors which have problems if these sectors
|
|
* are not part of the bad file for the pack (see bad144). For instance,
|
|
* this program can be used if the driver for the file system in question
|
|
* does not support bad block forwarding.
|
|
*/
|
|
#include <sys/param.h>
|
|
#include <sys/dir.h>
|
|
#include <sys/stat.h>
|
|
|
|
#include <ufs/ufs/dinode.h>
|
|
#include <ufs/ufs/ufs_bswap.h>
|
|
#include <ufs/ffs/fs.h>
|
|
#include <ufs/ffs/ffs_extern.h>
|
|
|
|
#include <fcntl.h>
|
|
#include <paths.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <unistd.h>
|
|
#include <err.h>
|
|
|
|
union {
|
|
struct fs fs;
|
|
char fsx[SBSIZE];
|
|
} ufs;
|
|
#define sblock ufs.fs
|
|
union {
|
|
struct cg cg;
|
|
char cgx[MAXBSIZE];
|
|
} ucg;
|
|
#define acg ucg.cg
|
|
struct fs *fs;
|
|
int fso, fsi;
|
|
int errs;
|
|
long dev_bsize = 1;
|
|
int needswap = 0;
|
|
|
|
char buf[MAXBSIZE];
|
|
|
|
void rdfs __P((daddr_t, int, char *));
|
|
int chkuse __P((daddr_t, int));
|
|
int main __P((int, char *[]));
|
|
|
|
int
|
|
main(argc, argv)
|
|
int argc;
|
|
char *argv[];
|
|
{
|
|
daddr_t number;
|
|
struct stat stbuf, devstat;
|
|
struct direct *dp;
|
|
DIR *dirp;
|
|
char name[MAXPATHLEN];
|
|
extern char *__progname;
|
|
|
|
if (argc < 3) {
|
|
(void) fprintf(stderr, "Usage: %s bbdir blkno [ blkno ]\n",
|
|
__progname);
|
|
exit(1);
|
|
}
|
|
if (chdir(argv[1]) == -1)
|
|
err(1, "Cannot change directory to `%s'", argv[1]);
|
|
|
|
if (stat(".", &stbuf) == -1)
|
|
err(1, "Cannot stat `%s'", argv[1]);
|
|
|
|
(void) strcpy(name, _PATH_DEV);
|
|
if ((dirp = opendir(name)) == NULL)
|
|
err(1, "Cannot opendir `%s'", argv[1]);
|
|
|
|
while ((dp = readdir(dirp)) != NULL) {
|
|
(void) snprintf(name, sizeof(name), "%s%s", _PATH_DEV,
|
|
dp->d_name);
|
|
if (stat(name, &devstat) == -1)
|
|
err(1, "Cannot stat `%s'", name);
|
|
if (stbuf.st_dev == devstat.st_rdev &&
|
|
S_ISBLK(devstat.st_mode))
|
|
break;
|
|
}
|
|
closedir(dirp);
|
|
if (dp == NULL)
|
|
errx(1, "Cannot find dev 0%o corresponding to %s",
|
|
stbuf.st_rdev, argv[1]);
|
|
|
|
/*
|
|
* The filesystem is mounted; use the character device instead.
|
|
* XXX - Assume that prepending an `r' will give us the name of
|
|
* the character device.
|
|
*/
|
|
(void) snprintf(name, sizeof(name), "%sr%s", _PATH_DEV, dp->d_name);
|
|
if ((fsi = open(name, O_RDONLY)) == -1)
|
|
err(1, "Cannot open `%s'", argv[1]);
|
|
|
|
fs = &sblock;
|
|
rdfs(SBOFF, SBSIZE, (char *)fs);
|
|
if (fs->fs_magic != FS_MAGIC) {
|
|
if(fs->fs_magic == bswap32(FS_MAGIC))
|
|
needswap = 1;
|
|
else
|
|
errx(1, "%s: bad superblock", name);
|
|
}
|
|
if (needswap)
|
|
ffs_sb_swap(fs, fs, 0);
|
|
dev_bsize = fs->fs_fsize / fsbtodb(fs, 1);
|
|
for (argc -= 2, argv += 2; argc > 0; argc--, argv++) {
|
|
number = atoi(*argv);
|
|
if (chkuse(number, 1))
|
|
continue;
|
|
if (mknod(*argv, S_IFMT|S_IRUSR|S_IWUSR,
|
|
dbtofsb(fs, number)) == -1) {
|
|
warn("Cannot mknod `%s'", *argv);
|
|
errs++;
|
|
}
|
|
}
|
|
|
|
warnx("Don't forget to run ``fsck %s''", name);
|
|
return errs;
|
|
}
|
|
|
|
int
|
|
chkuse(blkno, cnt)
|
|
daddr_t blkno;
|
|
int cnt;
|
|
{
|
|
int cg;
|
|
daddr_t fsbn, bn;
|
|
|
|
fsbn = dbtofsb(fs, blkno);
|
|
if ((unsigned)(fsbn+cnt) > fs->fs_size) {
|
|
warnx("block %d out of range of file system", blkno);
|
|
return (1);
|
|
}
|
|
|
|
cg = dtog(fs, fsbn);
|
|
if (fsbn < cgdmin(fs, cg)) {
|
|
if (cg == 0 || (fsbn+cnt) > cgsblock(fs, cg)) {
|
|
warnx("block %d in non-data area: cannot attach",
|
|
blkno);
|
|
return (1);
|
|
}
|
|
} else {
|
|
if ((fsbn+cnt) > cgbase(fs, cg+1)) {
|
|
warnx("block %d in non-data area: cannot attach",
|
|
blkno);
|
|
return (1);
|
|
}
|
|
}
|
|
|
|
rdfs(fsbtodb(fs, cgtod(fs, cg)), (int)sblock.fs_cgsize,
|
|
(char *)&acg);
|
|
|
|
if (!cg_chkmagic(&acg, needswap)) {
|
|
warnx("cg %d: bad magic number", cg);
|
|
errs++;
|
|
return (1);
|
|
}
|
|
|
|
bn = dtogd(fs, fsbn);
|
|
if (isclr(cg_blksfree(&acg, needswap), bn))
|
|
warnx("Warning: sector %d is in use", blkno);
|
|
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* read a block from the file system
|
|
*/
|
|
void
|
|
rdfs(bno, size, bf)
|
|
daddr_t bno;
|
|
int size;
|
|
char *bf;
|
|
{
|
|
int n;
|
|
|
|
if (lseek(fsi, (off_t)bno * dev_bsize, SEEK_SET) == -1)
|
|
err(1, "seek error at block %d", bno);
|
|
|
|
switch (n = read(fsi, bf, size)) {
|
|
case -1:
|
|
err(1, "read error at block %d", bno);
|
|
break;
|
|
|
|
default:
|
|
if (n == size)
|
|
return;
|
|
errx(1, "incomplete read at block %d", bno);
|
|
}
|
|
}
|