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keep you from dumpfs-ing a filesystem with a bad magic #. fixes bug 249. fix 98% from Giles Lean

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This commit is contained in:
glass 1994-12-26 22:11:31 +00:00
parent 7f03929ef8
commit 572e2d63e3
2 changed files with 16 additions and 2 deletions
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9
sbin/dumpfs/dumpfs.c
View File

@ -39,7 +39,7 @@ static char copyright[] =
#ifndef lint
/*static char sccsid[] = "from: @(#)dumpfs.c 8.2 (Berkeley) 2/2/94";*/
static char *rcsid = "$Id: dumpfs.c,v 1.7 1994/09/23 02:18:35 mycroft Exp $";
static char *rcsid = "$Id: dumpfs.c,v 1.8 1994/12/26 22:11:31 glass Exp $";
#endif /* not lint */
#include <sys/param.h>
@ -117,6 +117,13 @@ dumpfs(name)
if (read(fd, &afs, SBSIZE) != SBSIZE)
goto err;
if (afs.fs_magic != FS_MAGIC) {
warnx("%s: superblock has bad magic number, skipping.",
name);
(void) close(fd);
return (1);
}
if (afs.fs_postblformat == FS_42POSTBLFMT)
afs.fs_nrpos = 8;
dev_bsize = afs.fs_fsize / fsbtodb(&afs, 1);

9
usr.sbin/dumpfs/dumpfs.c
View File

@ -39,7 +39,7 @@ static char copyright[] =
#ifndef lint
/*static char sccsid[] = "from: @(#)dumpfs.c 8.2 (Berkeley) 2/2/94";*/
static char *rcsid = "$Id: dumpfs.c,v 1.7 1994/09/23 02:18:35 mycroft Exp $";
static char *rcsid = "$Id: dumpfs.c,v 1.8 1994/12/26 22:11:31 glass Exp $";
#endif /* not lint */
#include <sys/param.h>
@ -117,6 +117,13 @@ dumpfs(name)
if (read(fd, &afs, SBSIZE) != SBSIZE)
goto err;
if (afs.fs_magic != FS_MAGIC) {
warnx("%s: superblock has bad magic number, skipping.",
name);
(void) close(fd);
return (1);
}
if (afs.fs_postblformat == FS_42POSTBLFMT)
afs.fs_nrpos = 8;
dev_bsize = afs.fs_fsize / fsbtodb(&afs, 1);