About loadable kernel modules

About loadable kernel modules

[Alexandros Fragkiadakis]

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Hi all,

Well, i have written a (netfilter) loadable kernel module for filtering various packets. I pass these packets from kernel space to user space using libipq.
 I also have a user process thas loads and unloads this loadable kernel module using the commands:
system("insmod kernel_module.o") 
system("rmmod kernel_module") respectively.

 I'd like to pass parameters to the loadable module, hence having a more flexible user process. 
  So, instead of using the command system("insmod kernel_module.o"),
i'd like to use: system("insmod kernel_module.o <param1> <param2>...<param n>")
, hence passing command line parameters to my loadable module.

Do you know if it is possible?

Thanks

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Re: About loadable kernel modules

[Roberto Nibali]

Hello,

>  I also have a user process thas loads and unloads this loadable kernel 
> module using the commands:
> system("insmod kernel_module.o")
> system("rmmod kernel_module") respectively.

Ok.

>  I'd like to pass parameters to the loadable module, hence having a more 
> flexible user process.
>   So, instead of using the command /system("insmod kernel_module.o"),/
> i'd like to use: /system("insmod kernel_module.o <param1> 
> <param2>...<param n>")/
> , hence passing command line parameters to my loadable module.
>  
> Do you know if it is possible?

You definitely want the know about the MODULE_PARM() macro. Get more information 
by reading an existing module like for example:

grep ^MODULE_ /usr/src/linux/drivers/net/3c59x.c

Best regards,
Roberto Nibali, ratz
-- 
echo '[q]sa[ln0=aln256%Pln256/snlbx]sb3135071790101768542287578439snlbxq' | dc

Re: About loadable kernel modules

[Joel Newkirk]

On Wednesday 02 October 2002 02:04 pm, Alexandros Fragkiadakis wrote:
> Hi all,
>
> Well, i have written a (netfilter) loadable kernel module for filtering
> various packets. I pass these packets from kernel space to user space using
> libipq. I also have a user process thas loads and unloads this loadable
> kernel module using the commands: system("insmod kernel_module.o")
> system("rmmod kernel_module") respectively.
>
>  I'd like to pass parameters to the loadable module, hence having a more
> flexible user process. So, instead of using the command system("insmod
> kernel_module.o"), i'd like to use: system("insmod kernel_module.o <param1>
> <param2>...<param n>") , hence passing command line parameters to my
> loadable module.

Probably execl(*command,*arg1,*arg2,*arg3...,null) will do what you want.

j