On Fri, Sep 30, 2016 at 12:54 PM, Igor Kozhukhov <[email protected]>
wrote:

> rechecked now full list of changes - we are using sources in all places:
> cmd/lib/uts
>
> i’d like propose move shared sources to src/common/lua
>

The lua source is used only for ZFS, so how is it "shared"?  Do you have
plans for other kernel (or user) subsystems to use lua?


>
> for private library add -sys and use it for cmd components.
>

I don't understand what you're suggesting here.  We aren't creating a lua
command or library, it's completely baked in to the zfs kernel module (and
for testing only, libzpool).

--matt


>
> i did similar for acpica, but new structure was not approved.
>
> -Igor
>
> i think, based on info that current modified lua is part of kernel modules
> builds, will be better put sources to:
> uts/common/lang/lua/* - where we can save original sources structure for
> next updates.
>
> -Igor
>
> > On Sep 30, 2016, at 10:16 PM, Chris Williamson <[email protected]>
> wrote:
> >
> > It was necessary to slightly modify the base lua 5.2.4 interpreter for a
> couple reasons:
> >
> > the need to disable a number of printing, file io, and pcall functions
> > error handling changes to allow channel programs to return errors rather
> than panicking the kernel
> > limited kernel stack space
> > math compatibility functions since we've changed the number
> representation from long double to int64_t
> > a handful of inconsistencies in expected standard library signatures
> > From looking at the configuration options for the packaged Lua
> interpreter, unfortunately I don't think we'd be able to just use binaries
> from a userland package. As such we've added the full source.
> >
> > I'm open to suggestions if there's a better home for the interpreter
> code than uts/common/fs/zfs/lua, though.
> >
> > For reference, here's the diff between the stock Lua 5.2.4 interpreter
> and the modified one we've included:
> > https://gist.github.com/cwill/9b71422008c8c08ff091faefdcc0bc42 <
> https://gist.github.com/cwill/9b71422008c8c08ff091faefdcc0bc42>
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