mirror of
https://git.hardenedbsd.org/hardenedbsd/HardenedBSD.git
synced 2024-12-22 17:24:23 +01:00
231 lines
6.2 KiB
C
231 lines
6.2 KiB
C
/*
|
|
* 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.
|
|
*/
|
|
|
|
#ifndef lint
|
|
static const char 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 const char sccsid[] = "@(#)badsect.c 8.1 (Berkeley) 6/5/93";
|
|
#endif
|
|
static const char rcsid[] =
|
|
"$Id: badsect.c,v 1.5 1998/06/04 06:38:03 charnier Exp $";
|
|
#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/stat.h>
|
|
|
|
#include <ufs/ffs/fs.h>
|
|
#include <ufs/ufs/dinode.h>
|
|
|
|
#include <err.h>
|
|
#include <dirent.h>
|
|
#include <fcntl.h>
|
|
#include <paths.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <unistd.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;
|
|
|
|
char buf[MAXBSIZE];
|
|
|
|
void rdfs __P((daddr_t, int, char *));
|
|
int chkuse __P((daddr_t, int));
|
|
|
|
static void
|
|
usage(void)
|
|
{
|
|
fprintf(stderr, "usage: badsect bbdir blkno ...\n");
|
|
exit(1);
|
|
}
|
|
|
|
int
|
|
main(argc, argv)
|
|
int argc;
|
|
char *argv[];
|
|
{
|
|
daddr_t diskbn;
|
|
daddr_t number;
|
|
struct stat stbuf, devstat;
|
|
register struct dirent *dp;
|
|
DIR *dirp;
|
|
char name[2 * MAXPATHLEN];
|
|
char *name_dir_end;
|
|
|
|
if (argc < 3)
|
|
usage();
|
|
if (chdir(argv[1]) < 0 || stat(".", &stbuf) < 0)
|
|
err(2, "%s", argv[1]);
|
|
strcpy(name, _PATH_DEV);
|
|
if ((dirp = opendir(name)) == NULL)
|
|
err(3, "%s", name);
|
|
name_dir_end = name + strlen(name);
|
|
while ((dp = readdir(dirp)) != NULL) {
|
|
strcpy(name_dir_end, dp->d_name);
|
|
if (lstat(name, &devstat) < 0)
|
|
err(4, "%s", name);
|
|
if (stbuf.st_dev == devstat.st_rdev &&
|
|
(devstat.st_mode & IFMT) == IFBLK)
|
|
break;
|
|
}
|
|
closedir(dirp);
|
|
if (dp == NULL) {
|
|
printf("Cannot find dev 0%lo corresponding to %s\n",
|
|
(u_long)stbuf.st_rdev, argv[1]);
|
|
exit(5);
|
|
}
|
|
/*
|
|
* Opening of a mounted on device is not allowed.
|
|
* Attempt to open the raw device instead.
|
|
*/
|
|
memcpy(name_dir_end + 1, name_dir_end, strlen(name_dir_end) + 1);
|
|
*name_dir_end = 'r';
|
|
if ((fsi = open(name, O_RDONLY)) < 0)
|
|
err(6, "%s", name);
|
|
fs = &sblock;
|
|
rdfs(SBOFF, SBSIZE, (char *)fs);
|
|
dev_bsize = fs->fs_fsize / fsbtodb(fs, 1);
|
|
for (argc -= 2, argv += 2; argc > 0; argc--, argv++) {
|
|
number = atol(*argv);
|
|
if (chkuse(number, 1))
|
|
continue;
|
|
/*
|
|
* Print a warning if converting the block number to a dev_t
|
|
* will truncate it. badsect was not very useful in versions
|
|
* of BSD before 4.4 because dev_t was 16 bits and another
|
|
* bit was lost by bogus sign extensions.
|
|
*/
|
|
diskbn = dbtofsb(fs, number);
|
|
if ((dev_t)diskbn != diskbn) {
|
|
printf("sector %ld cannot be represented as a dev_t\n",
|
|
(long)number);
|
|
errs++;
|
|
}
|
|
else if (mknod(*argv, IFMT|0600, (dev_t)diskbn) < 0) {
|
|
warn("%s", *argv);
|
|
errs++;
|
|
}
|
|
}
|
|
printf("Don't forget to run ``fsck %s''\n", name);
|
|
exit(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) {
|
|
printf("block %ld out of range of file system\n", (long)blkno);
|
|
return (1);
|
|
}
|
|
cg = dtog(fs, fsbn);
|
|
if (fsbn < cgdmin(fs, cg)) {
|
|
if (cg == 0 || (fsbn+cnt) > cgsblock(fs, cg)) {
|
|
printf("block %ld in non-data area: cannot attach\n",
|
|
(long)blkno);
|
|
return (1);
|
|
}
|
|
} else {
|
|
if ((fsbn+cnt) > cgbase(fs, cg+1)) {
|
|
printf("block %ld in non-data area: cannot attach\n",
|
|
(long)blkno);
|
|
return (1);
|
|
}
|
|
}
|
|
rdfs(fsbtodb(fs, cgtod(fs, cg)), (int)sblock.fs_cgsize,
|
|
(char *)&acg);
|
|
if (!cg_chkmagic(&acg)) {
|
|
fprintf(stderr, "cg %d: bad magic number\n", cg);
|
|
errs++;
|
|
return (1);
|
|
}
|
|
bn = dtogd(fs, fsbn);
|
|
if (isclr(cg_blksfree(&acg), bn))
|
|
printf("Warning: sector %ld is in use\n", (long)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) < 0) {
|
|
printf("seek error: %ld\n", (long)bno);
|
|
err(1, "rdfs");
|
|
}
|
|
n = read(fsi, bf, size);
|
|
if (n != size) {
|
|
printf("read error: %ld\n", (long)bno);
|
|
err(1, "rdfs");
|
|
}
|
|
}
|