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DDF: guid_str: convenience function to print GUID for debugging 

For debugging DDF structure changes, it is important to be able
to identify VCs by their GUIDs.

Signed-off-by: Martin Wilck <mwilck@arcor.de>
Signed-off-by: NeilBrown <neilb@suse.de>
This commit is contained in:
mwilck@arcor.de 2013-07-03 22:28:03 +02:00 committed by NeilBrown
parent ddf94a437e
commit be9b9ef42e
1 changed files with 14 additions and 0 deletions
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14
super-ddf.c
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@ -1296,6 +1296,17 @@ static void print_guid(char *guid, int tstamp)
printf(")");
}
static const char *guid_str(const char *guid)
{
static char buf[DDF_GUID_LEN*2+1];
int i;
char *p = buf;
for (i = 0; i < DDF_GUID_LEN; i++)
p += sprintf(p, "%02x", (unsigned char)guid[i]);
*p = '\0';
return (const char *) buf;
}
static void examine_vd(int n, struct ddf_super *sb, char *guid)
{
int crl = sb->conf_rec_len;
@ -2792,6 +2803,9 @@ static int __write_ddf_structure(struct dl *d, struct ddf_super *ddf, __u8 type,
&dummy);
}
if (c) {
dprintf("writing conf record %i on disk %08x for %s/%u\n",
i, d->disk.refnum, guid_str(vdc->guid),
vdc->sec_elmnt_seq);
vdc->seqnum = header->seq;
vdc->crc = calc_crc(vdc, conf_size);
if (write(fd, vdc, conf_size) < 0)