[Click] File operations in Click

[Jelena Mirkovic]

Well, Script element is not quite what I want. I want to read a set of  
IPs and delays like this:
	1.1.1.1 200
	2.2.2.2 300
then remember them in the kernel module. When a packet comes from  
1.1.1.1 I want to impose 200 ms delay, and for 2.2.2.2 source 300 ms  
delay. So I'm afraid some file reading is necessary and I cannot use  
variables from Script.  Or am I missing some other Script  
functionality that may be useful?

Thanks
-------------------------------------
Jelena Mirkovic
Computer Scientist
USC Information Sciences Institute
4676 Admiralty Way, Suite 1001
Marina del Rey, CA 90292
310-448-9170


On Jul 16, 2008, at 7:03 PM, Roman Chertov wrote:

> Jelena Mirkovic wrote:
>> I've been trying to write a kernel module in Click that reads  
>> address  info from a file, then manipulates (drops or forwards)  
>> packets for  the specified addresses. I've had problems with using  
>> fopen -  basically click-install informs me that fopen is unknown  
>> symbol even  though I've included stdio.h in my file. I seem to  
>> remember Linux  kernel has a problem manipulating files. Is there  
>> an easy way to open
>
> It is disallowed to use system calls inside the kernel.  It is  
> possible to still use them with some trickery but is best not to do  
> so.
>
> Take a look at the Script element; it might be what you are looking  
> for.
>
> Roman
>
>> and read a file from a Click kernel module?
>> Thanks
>> -------------------------------------
>> Jelena Mirkovic
>> Computer Scientist
>> USC Information Sciences Institute
>> 4676 Admiralty Way, Suite 1001
>> Marina del Rey, CA 90292
>> 310-448-9170
>> _______________________________________________
>> click mailing list
>> click at amsterdam.lcs.mit.edu
>> https://amsterdam.lcs.mit.edu/mailman/listinfo/click