Re: Write file in EXT2

["Sumit Narayan" <sumit_uconn@lycos.com>]

Hi,

Thanks for the details.

I wish to know which application access which file, when.. etc etc. I would like to create a log of that. I am unable to write this log to the file from within the kernel. I would not like to go to the user level programs. I am doing this from within the kernel, as I would like to know exactly when things are being done.

Regards,
Sumit
--

On Tue, 06 May 2003 01:06:45  
 Frank Davis wrote:
>Sumit,
>
>In fact, if you're looking at journalizing ext2, ext3 has already done it.
>
>Regards,
>Frank
>
>Frank Davis wrote:
>> Sumit,
>> 
>> Why do you have to do this in the kernel? I can envision doing printks 
>> after each read and write call, and having a userland program receive 
>> the kernel output, storing it into a buffer, and then writing that 
>> buffer, either using fprintf, or fflush, etc.
>> 
>> Regards,
>> Frank
>> 
>> Sumit Narayan wrote:
>> 
>>> Hi,
>>>
>>> I would like to create a log file containing the reads and writes made 
>>> on a disk, by adding a function in the kernel. And once this log table 
>>> reaches a limit, say 10,000 records, I would like it to be written on 
>>> hard disk automatically. I am unable to do this, since I dont know how 
>>> to write to a file, while in the kernel. I tried System Calls, but 
>>> they dont seem to work. Could someone tell me what is the list of 
>>> functions that I need to use to do this job. I think I have to play 
>>> with super-blocks and inodes. But I dont know how to do that. :) 
>>> Please help me.
>>> Thanks.
>>> Sumit
>>>
>>> p.s. I am using Kernel 2.4.20 and want this in EXT2 FS
>>>
>>>
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>> 
>> 
>
>
>


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