Re: kernel headers & userspace

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Selon Guillaume Thouvenin <guillaume.thouvenin@polymtl.ca>:

> ---- NEW HEADER FILE ----
> #ifndef __LINUX_ELSA_H
> #define __LINUX_ELSA_H
> 
> struct bank_root_s;
> enum elsa_opcode {BANK_INIT,BANK_ALLOC,BANK_FREE,BANK_ADD,BANK_REMOVE};
> 
> /* 
>  * sys_elsa() interface. 
>  *
>  * int sys_elsa(int opcode, unsigned int arg0,
>  *              unsigned int arg1, unsigned int arg2)
>  */
> 
> #ifdef __KERNEL__
> 
> Now, I can compile the test program. Therefore, my question is :
> Is it a correct solution 

There is a problem with this solution because the can declare the structure 
bank_root_s in the user program but the compiler will not know the size of the
structure as the type is incomplete....

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