[review request] zfsboot/zfsloader: support accessing
filesystems within a pool
Andriy Gapon
avg at FreeBSD.org
Wed Apr 18 14:37:04 UTC 2012
on 18/04/2012 17:22 Ian Lepore said the following:
> YES! A size field (preferably as the first field in the struct) along
> with a flag to indicate that it's a new-style boot info struct that
> starts with a size field, will allow future changes without a lot of
> drama. It can allow code that has to deal with the struct without
> interpretting it (such as trampoline code that has to copy it to a new
> stack or memory area as part of loading the kernel) to be immune to
> future changes.
Yeah, placing the new field at front would immediately break compatibility and
even access to the flags field :-)
--
Andriy Gapon
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