Date: Sun, 2 May 2004 11:57:41 +1000 From: Tim Robbins <tjr@freebsd.org> To: Christer Solskogen <solskogen@carebears.mine.nu> Cc: current@freebsd.org Subject: Re: mounting msdosfs Message-ID: <20040502015741.GA88260@cat.robbins.dropbear.id.au> In-Reply-To: <1082909731.28762.1.camel@funshine.carebears.net> References: <1082192214.23944.14.camel@funshine.carebears.net> <20040418034411.GB5419@cat.robbins.dropbear.id.au> <1082909731.28762.1.camel@funshine.carebears.net>
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On Sun, Apr 25, 2004 at 06:15:31PM +0200, Christer Solskogen wrote:
> On Sun, 2004-04-18 at 05:44, Tim Robbins wrote:
>
> > That fix looks reasonable. I'll see if I can get around to merging
> > this and any other useful fixes from NetBSD later tonight.
> >
>
> I just upgraded to CURRENT, and it seems like my problem is not fixed.
> The NetBSD import did not the trick :/
>
> If I can help you with some info, please tell me.
Apologies for the late reply. Can you apply this patch & show me the
output of running fsck_msdosfs on the partitions that failed the backup
boot block check?
==== //depot/user/tjr/freebsd-tjr/src/sbin/fsck_msdosfs/boot.c#3 - /home/tim/p4/src/sbin/fsck_msdosfs/boot.c ====
@@ -56,6 +56,7 @@
u_char fsinfo[2 * DOSBOOTBLOCKSIZE];
u_char backup[DOSBOOTBLOCKSIZE];
int ret = FSOK;
+ int i, j;
if (read(dosfs, block, sizeof block) < sizeof block) {
perror("could not read boot block");
@@ -159,6 +160,23 @@
perror("could not read backup bootblock");
return FSFATAL;
}
+ printf("Boot block:\n");
+ for (i = j = 0; i < 512; i++) {
+ j += printf("%02x ", block[i]);
+ if (j > 70) {
+ putchar('\n');
+ j = 0;
+ }
+ }
+ printf("Backup block:\n");
+ for (i = j = 0; i < 512; i++) {
+ j += printf("%02x%c", backup[i],
+ backup[i] == block[i] ? ' ' : '*');
+ if (j > 70) {
+ putchar('\n');
+ j = 0;
+ }
+ }
backup[65] = block[65]; /* XXX */
if (memcmp(block + 11, backup + 11, 79)) {
/* Correct? XXX */
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