From: "Sumit Narayan" <sumit_uconn@lycos.com>
To: fdavis@si.rr.com
Cc: linux-kernel@vger.kernel.org
Subject: Re: Write file in EXT2
Date: Tue, 06 May 2003 10:52:27 -0400 [thread overview]
Message-ID: <JLODCPDJJDNBCDAA@mailcity.com> (raw)
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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next reply other threads:[~2003-05-06 14:42 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-05-06 14:52 Sumit Narayan [this message]
2003-05-07 16:55 ` Write file in EXT2 Amol P Dharmadhikari
-- strict thread matches above, loose matches on Subject: below --
2003-05-06 14:45 Sumit Narayan
2003-05-06 15:34 ` Richard B. Johnson
2003-05-06 3:14 Sumit Narayan
2003-05-06 4:10 ` Valdis.Kletnieks
2003-05-06 7:17 ` Matti Aarnio
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