void
fwormream(Device *d)
{
Iobuf *p;
Device *fdev;
Off a, b;
if(chatty)
print("fworm ream\n");
devinit(d);
fdev = FDEV(d);
a = fwormsize(d);
b = devsize(fdev);
if(chatty){
print("\tfwsize = %lld\n", (Wideoff)a);
print("\tbwsize = %lld\n", (Wideoff)b-a);
}
for(; a < b; a++) {
p = getbuf(fdev, a, Bmod|Bres);
if(!p)
panic("fworm: init");
memset(p->iobuf, 0, RBUFSIZE);
settag(p, Tvirgo, a);
putbuf(p);
}
}
Devsize
devsize(Device *d)
{
for (;;)
switch(d->type) {
case Devcw:
case Devro:
return cwsize(d);
case Devjuke:
d = d->j.m;
break;
case Devwren:
return wrensize(d);
case Devworm:
case Devlworm:
return wormsize(d);
case Devfworm:
return fwormsize(d);
case Devmcat:
return mcatsize(d);
case Devmlev:
return mlevsize(d);
case Devmirr:
return mirrsize(d);
case Devpart:
return partsize(d);
case Devswab:
d = d->swab.d;
break;
default:
panic("illegal device in devsize: %Z", d);
return 0;
}
}