void
partition(SDunit *unit)
{
int type;
char *p;
if(unit->part == 0)
return;
if(part9660(unit) == 0)
return;
p = getconf("partition");
if(p == nil)
p = defaultpartition;
if(p != nil && strncmp(p, "new", 3) == 0)
type = NEW;
else if(p != nil && strncmp(p, "old", 3) == 0)
type = OLD;
else
type = NEW|OLD;
if(nbuf < unit->secsize) {
free(mbrbuf);
free(partbuf);
mbrbuf = malloc(unit->secsize);
partbuf = malloc(unit->secsize);
if(mbrbuf==nil || partbuf==nil) {
free(mbrbuf);
free(partbuf);
partbuf = mbrbuf = nil;
nbuf = 0;
return;
}
nbuf = unit->secsize;
}
if((type & NEW) && mbrpart(unit) >= 0){
/* nothing to do */;
}
else if(type & OLD)
oldp9part(unit);
}
/*
* read unit->data to look for partition tables.
* if found, stash partitions in environment and write them to ctl too.
*/
static void
partition(PSDunit *unit)
{
int type;
char *p;
if(unit->part == 0)
return;
if(part9660(unit) == 0)
return;
p = getconf("partition");
if(p != nil && strncmp(p, "new", 3) == 0)
type = NEW;
else if(p != nil && strncmp(p, "old", 3) == 0)
type = OLD;
else
type = NEW|OLD;
if(mbrbuf == nil) {
mbrbuf = malloc(Maxsec);
partbuf = malloc(Maxsec);
if(mbrbuf==nil || partbuf==nil) {
free(mbrbuf);
free(partbuf);
partbuf = mbrbuf = nil;
return;
}
}
/*
* there might be no mbr (e.g. on a very large device), so look for
* a bare plan 9 partition table if mbrpart fails.
*/
if((type & NEW) && mbrpart(unit) >= 0){
/* nothing to do */
}
else if (type & NEW)
p9part(unit, "data");
else if(type & OLD)
oldp9part(unit);
}
