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Only compare the interesting part of the bootblock with its backup.

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Allow check to proceed with bad backup boot block if we're doing a
readonly check. Various typos in comments.

Obtained from:	NetBSD
This commit is contained in:
Tim J. Robbins 2004-04-20 11:41:57 +00:00
parent 3c8487013c
commit 4029695dbf
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=128463
1 changed files with 8 additions and 4 deletions
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12
sbin/fsck_msdosfs/boot.c
View File

@ -33,7 +33,7 @@
#include <sys/cdefs.h>
#ifndef lint
__RCSID("$NetBSD: boot.c,v 1.5 1997/10/17 11:19:23 ws Exp $");
__RCSID("$NetBSD: boot.c,v 1.9 2003/07/24 19:25:46 ws Exp $");
static const char rcsid[] =
"$FreeBSD$";
#endif /* not lint */
@ -159,10 +159,14 @@ readboot(dosfs, boot)
perror("could not read backup bootblock");
return FSFATAL;
}
if (memcmp(block, backup, DOSBOOTBLOCKSIZE)) {
backup[65] = block[65]; /* XXX */
if (memcmp(block + 11, backup + 11, 79)) {
/* Correct? XXX */
pfatal("backup doesn't compare to primary bootblock");
return FSFATAL;
if (alwaysno)
pfatal("\n");
else
return FSFATAL;
}
/* Check backup FSInfo? XXX */
}
@ -261,7 +265,7 @@ writefsinfo(dosfs, boot)
* correctly, it has to be fixed pretty often.
*
* Therefor, we handle the FSINFO block only informally,
* fixing it if neccessary, but otherwise ignoring the
* fixing it if necessary, but otherwise ignoring the
* fact that it was incorrect.
*/
return 0;