[OpenAFS] Re: Linking GPL3 code with IPL? (Was: afs_syscall (Samba as a client of OpenAFS))

Gémes Géza geza at kzsdabas.hu
Mon Oct 6 20:27:21 GMT 2008

The question here is not about ioctl, but about using the same data
structure as used in proc_afs_syscall


> The GPL module won't help you as it's the kernel and not the userland.
> Doing ioctls on a proc file isn't really proprietary; You don't need
> to link our code.
> Derrick
> On Oct 6, 2008, at 15:25, Gémes Géza <geza at kzsdabas.hu> wrote:
>> Volker Lendecke írta:
>>> On Sun, Oct 05, 2008 at 10:41:06PM +0200, Gémes Géza wrote:
>>>> I've built up a patch (attachment 3658 to bug 5799 on samba bugzilla)
>>>> which makes fake-kaserver and vfs-afsacl work again.
>>>> But the patched configure makes smbd, net and maybe other binaries
>>>> link
>>>> with libsys.a in order to communicate with the openafs kernel code.
>>>> The
>>>> question is what are the legal consequences, are the binaries
>>>> distributable et all?
>>> At the time I wrote the fake kaserver stuff I had the same
>>> concerns and thus did a fresh implementation of the ticket
>>> generation and syscall wrappers. Can't you do the same with
>>> the proc_afs_syscall thing? This can't be much code.
>>> Volker
>> Unfortunately this time it seems to be a lot harder, the main change
>> being at least to my understanding, the fact that the openafs kernel
>> module doesn't advertise its services as a system call, and thus we
>> cannot link with just libc code which calls into the kernel, but need to
>> explicitly use openafs calls for the same propose resulting in a need to
>> link to their code.
>> Hope is not lost totally yet as I've read about some work of developing
>> a GPL licensed kernel module, and then we could use some glue code from
>> there.
>> Geza
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