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SubjectRe: [Linux-streams] Re: [PATCH] Re: export of sys_call_tabl
Ole,

I don't think that exporting putpmsg and getpmsg as _GPL will
stop proprietary modules from being linked with LiS. LiS exports
its symbols on a different basis. There is no need for a proprietary
module using LiS to access putpmsg or getpmsg or the syscall
registration facility for that matter. Is you concern that LiS
using a _GPL only facility will force GPL on modules linked with LiS
even though LiS is LGPL?

--brian

On Sat, 12 Oct 2002, Ole Husgaard wrote:

> "Brian F. G. Bidulock" wrote:
> > On Fri, 11 Oct 2002, Christoph Hellwig wrote:
> > > It is not. Sys_call_table was exported to allow iBCS/Linux-ABI
> >
> > I don't know if it matters, but these two calls putpmsg and getpmsg
> > are the calls used by iBCS.
>
> AFAIK, iBCS use these syscalls to emulate TLI, and iBCS
> only has this emulation working for the IP protocol suite.
>
> LiS is hooking the same syscalls, and is more protocol
> independent.
>
> In this way, iBCS and LiS are competing projects, even
> if their base objectives are very different (iBCS aims
> for user-level binary portability from SysV, while LiS
> aims for kernel-level STREAMS code portability from SysV
> to extend to Linux).
>
> > No, I don't think anyone wants proprietary syscalls to be registered
> > with this facility. If _GPL can allow an LGPL module to use the
> > facility without problems, that will be the best way to go.
>
> An LGPL module with proprietary code linked into it will
> taint the kernel. LiS is often linked with proprietary
> code, since it is under LGPL.
>
> IMHO, A not-GPL-only export from the kernel is needed
> here.
>
> That will not make these syscalls proprietary. Even with
> proprietary drivers linked into LiS, it is impossible to
> deviate from the SysV definition of putpmsg/getpmsg
> unless the code of LiS itself is modified.
>
> Best Regards,
>
> Ole Husgaard.

--
Brian F. G. Bidulock ¦ The reasonable man adapts himself to the ¦
bidulock@openss7.org ¦ world; the unreasonable one persists in ¦
http://www.openss7.org/ ¦ trying to adapt the world to himself. ¦
¦ Therefore all progress depends on the ¦
¦ unreasonable man. -- George Bernard Shaw ¦
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