Re: Getting the plain void* through the generic ioctl processing

[Vladimir N. Silyaev]

You have to declare ioctl as the next:

#define SIO_SET_MULTICAST_FILTER        _IO ('s', 63)

And after that in your code mannualy via functions documented in
copy(9) and fetch(9) manpages, to access that user space structure,
user space pointer will be available for you as third arument
in your ioctl handler.

--
Vladimir
 


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