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Convert badsect to use libufs.

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This commit is contained in:
Juli Mallett 2003-01-20 21:24:34 +00:00
parent 3c95539d71
commit 3e3f1219af
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=109600
2 changed files with 18 additions and 58 deletions
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2
sbin/badsect/Makefile
View file

@ -2,6 +2,8 @@
# $FreeBSD$
PROG= badsect
DPADD= -lufs
LDADD= -lufs
WARNS= 0
MAN= badsect.8

74
sbin/badsect/badsect.c
View file

@ -65,37 +65,21 @@ static const char rcsid[] =
#include <err.h>
#include <dirent.h>
#include <fcntl.h>
#include <libufs.h>
#include <paths.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
union {
struct fs fs;
char fsx[SBLOCKSIZE];
} ufs;
#define sblock ufs.fs
union {
struct cg cg;
char cgx[MAXBSIZE];
} ucg;
#define acg ucg.cg
struct fs *fs;
int fso, fsi;
#define sblock disk.d_fs
#define acg disk.d_cg
struct uufsd disk;
struct fs *fs = &sblock;
int errs;
long dev_bsize = 1;
char buf[MAXBSIZE];
void rdfs(daddr_t, int, char *);
int chkuse(daddr_t, int);
/*
* Possible superblock locations ordered from most to least likely.
*/
static int sblock_try[] = SBLOCKSEARCH;
static void
usage(void)
{
@ -137,23 +121,12 @@ main(int argc, char *argv[])
(u_long)stbuf.st_rdev, argv[1]);
exit(5);
}
if ((fsi = open(name, O_RDONLY)) < 0)
err(6, "%s", name);
fs = &sblock;
for (i = 0; sblock_try[i] != -1; i++) {
rdfs(sblock_try[i] / dev_bsize, SBLOCKSIZE, (char *)fs);
if ((fs->fs_magic == FS_UFS1_MAGIC ||
(fs->fs_magic == FS_UFS2_MAGIC &&
fs->fs_sblockloc == sblock_try[i])) &&
fs->fs_bsize <= MAXBSIZE &&
fs->fs_bsize >= sizeof(struct fs))
break;
if (ufs_disk_fillout(&disk, name) == -1) {
if (disk.d_error != NULL)
errx(6, "%s: %s", name, disk.d_error);
else
err(7, "%s", name);
}
if (sblock_try[i] == -1) {
printf("Cannot find file system\n");
exit(7);
}
dev_bsize = fs->fs_fsize / fsbtodb(fs, 1);
for (argc -= 2, argv += 2; argc > 0; argc--, argv++) {
number = atol(*argv);
if (chkuse(number, 1))
@ -175,6 +148,7 @@ main(int argc, char *argv[])
errs++;
}
}
ufs_disk_close(&disk);
printf("Don't forget to run ``fsck %s''\n", name);
exit(errs);
}
@ -204,8 +178,11 @@ chkuse(daddr_t blkno, int cnt)
return (1);
}
}
rdfs(fsbtodb(fs, cgtod(fs, cg)), (int)sblock.fs_cgsize,
(char *)&acg);
if (cgread1(&disk, cg) != 1) {
fprintf(stderr, "cg %d: could not be read\n", cg);
errs++;
return (1);
}
if (!cg_chkmagic(&acg)) {
fprintf(stderr, "cg %d: bad magic number\n", cg);
errs++;
@ -216,22 +193,3 @@ chkuse(daddr_t blkno, int cnt)
printf("Warning: sector %ld is in use\n", (long)blkno);
return (0);
}
/*
* read a block from the file system
*/
void
rdfs(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");
}
}