reply inlined
Vishal Verma wrote:
> I'm looking for a way to store variable,value pairs in the kernel at
> runtime. For example, I need to able to execute a command from the
> user-space and say
>
> my-kernel-set myvar "arbitrary value"
>
> This should create a variable in the kernel space with the name "myvar"
create a varible?
i can think of at least two way to DoS this..
> and set its value to "arbitrary value". Later, I want to be able to load
> a
> kernel module, that uses one of these variables. For example a kernel
> module may make a call to the api as:
>
> my_kernel_get("myvar", buf, sizeof (buf));
>
> Also, I want to be able to do:
>
> my-kernel-get myvar
>
> from the userspace.
>
> What I want to know is that if such a mechanism already exists in the
> kernel or not? If not, do you people see if wanting such a module is a
> valid requirement or the same problem could be solved in some other
> existing/non-existing way, efficiently.
>
> thanks
> -vish
>
>
> Ideally, I want the module to use the variable just as any other symbol.
> For example instead of the call to my_kernel_get(), I want to just use
> the
> variable "myvar" as:
>
> myvar = 10;
>
> This is only possible if the module which defines the variables can
> change
> the symbol table dynamically, which doesn't sound easily do-able to me.
> But, still any insight, thoughts on that would help greatly too.
>
this would be a security risk too..
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