Re: [9front] [PATCH 6/6] ndb: document attribute name and value length constraints in BUGS section of man page

[ori@eigenstate.org]

Looking at the code, Ndbvlen seems to be a soft limit; it's only
the initial allocation to save a malloc, but we can grow past it;
see ndbsetval in /sys/src/libndb/ndbfree.c:29. There is a soft limit
coming from Brdline, which depends on the size of the buffer in the
NDB struct; maybe we should document that a line must be no longer
than 8k. (This was bumped not so long ago to support the large TXT
records needed by DKIM).

That said, I think documenting the attribute size is a good idea.


Quoth unobe@cpan.org:
> Ping.
> 
> Quoth unobe@cpan.org:
> > I came across these limitations (defined in /sys/include/ndb.h as
> > Ndbalen and Ndbvlen, respectively) when toying around with ndb as a
> > simple database.  This hopefully will save someone else some head
> > scratching when the query isn't returning as it should.
> > 
> > Quoth Romano <unobe@cpan.org>:
> > > ---
> > > diff 46cf9d4eb02a3a7c2516be3053994d4fb69eb949 0b5b2d58047b698564f6b1955a31cbcc95570abb
> > > --- a/sys/man/8/ndb
> > > +++ b/sys/man/8/ndb
> > > @@ -924,3 +924,5 @@
> > >  .I Ndb
> > >  databases are case-sensitive;
> > >  ethernet addresses must be in lower-case hexadecimal.
> > > +.I Ndb
> > > +database attributes are constrained to 32-byte attribute names and 64-byte attribute values.
> > > 
> > 
>