Aiee :)
Hello!
On Tue, Sep 18, 2001 at 10:39:06AM -0700, Anil Kumar wrote:
> After passing the argument in
> ioctl(socketfd,NEWSOCKIOCTL,NULL) now the next thing I
> want to do is to pass an argument to the ioctl
> call.I passed a NULL in the first dummy example. Now
The userspace ioctl(2) syscall support variables args list
so isn't mandatory to pass NULL as third arg; just ommit it
(well, never mind about this tho).
> if I need to send reference to my own structure,how do
> i access this user space argument inside af_inet.c? Or
> do I need to write a translating function which
> converts the user data from user to kernel space? I
Just look at some function that do that;
i.e. looking at devinet_ioctl(), defined in net/ipv4/devinet.c
called by inet_ioctl() should give to you a clear skeleton to
follow (you can see that copy_from_user() gets called to copy
the third ioctl args from userland to kernel space) ...
and so on ...
It shouldn't be so hard ...
bye bye
-- gg sullivan
--
Lorenzo Cavallaro `Gigi Sullivan' <sullivan@sikurezza.org>
Until I loved, life had no beauty;
I did not know I lived until I had loved. (Theodor Korner)
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