Re: ados fs and vnd

[Michael van Elst <mlelstv%serpens.de@localhost>]

On Sat, Sep 05, 2009 at 11:13:58AM +0200, Frank Wille wrote:

> But there is nothing in disktab(5) which fits into p_cpg.

The only API for disktab(5) is getdiskbyname() which returns
a prototype disk label. It should be trivial to teach it
more fields.

> UFS: cylinders per group
> LFS: segment shift
> ADOS: reserved blocks

There are two fields that are used this way.

                union {
                        uint32_t fsize; /* FFS, ADOS:
                                            filesystem basic fragment size */
                        uint32_t cdsession; /* ISO9660: session offset */
                } __partition_u2;

                union {
                        uint16_t cpg;   /* UFS: FS cylinders per group */
                        uint16_t sgs;   /* LFS: FS segment shift */
                } __partition_u1;


Greetings,
-- 
                                Michael van Elst
Internet: mlelstv%serpens.de@localhost
                                "A potential Snark may lurk in every tree."