magic numbers for deltarpms and deltaisos
Michael Schroeder
mls at suse.de
Thu Nov 5 09:48:37 UTC 2009
On Thu, Nov 05, 2009 at 09:00:52AM +0200, Jonathan Dieter wrote:
> On Thu, 2009-11-05 at 01:24 -0500, Andre Robatino wrote:
> > The file command appears to detect deltarpms as the same type of file as
> > regular RPMs. Deltaisos are only detected as "data". Is this normal
> > behavior?
>
> A deltarpm's header is identical to a rpm's header (except that the
> payload format is "drpm"), so it will always be seen as an rpm by file.
That's true for "header" deltarpms, but "rpm-only" delta rpms
start with "drpm".
> I'm not sure about deltaiso.
They start with "DISO" and then 4 bytes deltaiso version in network
byte order.
Cheers,
Michael.
--
Michael Schroeder mls at suse.de
SUSE LINUX Products GmbH, GF Markus Rex, HRB 16746 AG Nuernberg
main(_){while(_=~getchar())putchar(~_-1/(~(_|32)/13*2-11)*13);}
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