preferable way to control kernel module

[Julian Elischer]

Dirk GOUDERS wrote:
>  > >>Shouldn't that be no problem if he sets the offset parameter to
>  > >>SYSCALL_MODULE to NO_SYSCALL (get the next free offset)?
>  > > 
>  > > 
>  > > But then you have to communicate the syscall number out to your userland 
>  > > applications somehow, and the applications have to know how to invoke a 
>  > > syscall by hand (perhaps they could use the syscall() function, but still)


In the past, I've used a sysctl to communicate out the syscall number.

you only need to do the syscall once,
and it confirms to the program that the syscall is correctly installed.