validate: CheckLinux is platform dependent

[vbatts]

Signed-off-by: Vincent Batts [email protected]

[liangchenye]

Hi @vbatts , I think 'validate.go' built in a non-Linux environment could also validate the Linux struct.

[wking]

On Wed, Jan 24, 2018 at 08:37:17AM +0000, (Liang Chenye) wrote: I think 'validate.go' built in a non-Linux environment could also validate the Linux struct.

+1, as long as ‘HostSpecific’ wasn't set (in which case we should error out). I'm in favor of moving anything that won't compile on other platforms (and is only used for HostSpecific checks) over to Linux-only helper functions, but I'd rather not move *all* of CheckLinux.

[liangchenye]

LGTM
I just reviewed #561. I feel it will be clearer and easier to maintain if we move all the Linux checking/generating works out.

[wking]

I feel it will be clearer and easier to maintain if we move all the Linux checking/generating works out.

But you lose the ability to do host-agnostic, cross-platform validation. More on that in #445. Is cross-platform validation not a goal of this project?

[wking]

I've filed #565 with a start at the narrower change I think we want to see, allowing for Windows hosts to compile validate (like this PR) but retaining the ability of Windows hosts to perform most host-agnostic validation of the linux config (unlike this PR).

[zhouhao3]

Need rebase @vbatts .

[vbatts]

updated. PTAL.

[zhouhao3]

LGTM