Add support for gpt disks

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04-07-2008, 08:35 AM

Daniel Dickman

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Add support for gpt disks

I've started porting gpt(8) over from FreeBSD (with some very minor
bits from NetBSD). This tool lets you create and manipulate GPT disks
which are used by EFI platforms and which I need support for.

I have 2 patches for this --
i) the first patch adds uuid support
(http://dickman.org/openbsd/gpt/lib_uuid.patch)
ii) the second patch adds gpt support and depends on the first patch
(http://dickman.org/openbsd/gpt/gpt.patch)

I also have a diff with the changes I had to make to FreeBSD's gpt to
get it working on openbsd. This might be helpful for anyone wanting to
look at the OpenBSD specific bits.
http://dickman.org/openbsd/gpt/gpt_c..._openbsd.patch

What's left to do:
- uuid_create hasn't been implemented. On FreeBSD they added a syscall
for generating UUIDs, I'd like to explore if this can be done in
userspace. At the moment, this just returns a null UUID as a stub.
- the gpt man page needs to be fixed for OpenBSD
- this hasn't undergone much testing

Any comments/feedback?

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Add support for gpt disks