> While understanding how refs work inside nupas, i decided to try to implement
> the same function nupas has to find mailbox references in acid langauge, so i
> did:
>
> defn findmboxrefs(mb,fids) {
> local f, refs;
> f=fids;
> while f!=0 do {
> print("f=", f\X,"\n");
> if f->mb==mb then
> refs++;
> print("f->mb=", f->mb\X," =? mb=",mb\X,"\n");
> f=f->next;
> }
> print("refs ==", refs,"\n");
> }
first, i want to complement you on a fine use of acid.
very nice.
>
> using a Broken nupas (broked by an assert call), i got this:
>
> acid: findmboxrefs(*checkmboxrefs:mb,fids);
> f=0x0003a090
> f->mb=0x00000000 =? mb=0x0004a468
> f=0x0004bf68
> f->mb=0x8d1c2444 =? mb=0x0004a468
> f=0x89ffffe4
> <stdin>:75: (error) indir: can't read address 0x89ffffe4: bad arg in system
> call
your assmption that each fid has a mailbox is wrong.
see rattach() and sanefid(). they encode the rules.
- erik
