Re: [Linux-streams] Re: [PATCH] Re: export of sys_call_tabl

["Brian F. G. Bidulock" <bidulock@openss7.org>]

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 ¦