Re: passing array from kernel space to user space

[Vincenzo Mallozzi <vinjunior@xxxxxxxx>]

--- taha hafeez <tawushafeez@xxxxxxxxx> wrote:

> 
> Well, I think I get you now....
> 
> Correct me if I am wrong... 
> 
> 
>             data buffer
> USER_SPACE ------------>  KERNEL SPACE [fill data
> with pid_t]
>       ^                       |
>       |                       | 
>       *------<----------------*
>             data buffer
> 
> Why do we need to pass the data buffer to kernel ? 
> Does it contain any information that kernel needs ?
> if not, then that step can be avoided ?

no, I do not pass data buffer from user space. I pass,
instead, the length of this buffer.
The data buffer are retrieved from within the kernel
space.
thanks.
Vincenzo


	
	
		
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