[Nestedvm] NestedVM runtime patches

[David Ehrmann]

Interesting update on my realpath change. When do make busyboxtest with my
change, I see this:

# realpath ../nestedvm/src
/home/davidehrmann/nestedvm/src

(FreeBSD and Debian's realpath implementations do this)

Without my change, I see this:

# realpath ../nestedvm/src
realpath: ../nestedvm/src:

(which is just bizarre)

When I remove the bit in my change that prepends "/", I get:

# realpath ../nestedvm/src
home/davidehrmann/nestedvm/src

Tools like ls fail on that path.

I think my change is on the right track.

On Wed, Nov 12, 2014 at 10:45 PM, David Ehrmann <ehrmann at gmail.com> wrote:

> I made a few changes to NestedVM that can be found here:
>
> https://github.com/ehrmann/nestedvm/compare/windows-runtime-compat3
>
> They're described in the commits logs, but I'm not sure some of them are
> quit ready to be merged, yet, so I welcome any feedback.
>
> dbf0e18: I like the approach in code (dup2 is even the canonical way it's
> done after a fork), but I'm not sure if I like the static util methods.
>
> 2d5b544: normalizePath doesn't return absolute paths if it was given a
> relative path, it just prepends the cwd. This causes issues in sys_realpath
> because the return path looks like a relative path, and it will fail to
> open. There might have been some logic in it not returning absolute paths,
> but I'm not sure what it is. Also, what's the difference between throwing
> an ErrnoException and returning -<err_code>? And what if I want to return
> -1 and set errno?
>
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