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Date: Tue, 17 Dec 2002 09:39:04 -0500
From: "Nicholas Berry" <nikberry@med.umich.edu>
To: <root@chaos.analogic.com>, <sanju93csd@yahoo.co.in>
Cc: <Matt_Domsch@dell.com>, <linux-kernel@vger.kernel.org>
Subject: Re: How to get the size of the block device ???? (Important)
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I think the question being asked is 'how do I find out how many block
long the device is?'

You can open it, seek to the end, then the file postiton will tell you
the size of the device.

Nik


>>> "Richard B. Johnson" <root@chaos.analogic.com> 12/17/02 09:36AM
>>>
On Tue, 17 Dec 2002, [iso-8859-1] Sanjay Kumar wrote:

> Hi,
>   I am Sanjay Kumar and wants to write my own file
> system on Linux. I have almost written the code.
>   But,now i have a problem while writing the code 
> for "mkfs" for my filesystem.
> 
> Problem Summary : I need the size of the block device
> in bytes on which my file system will be created.
> Actually, there is a feild in the super block, needs
> the total no of blocks on the device while while
> creating the filesystem. So, Can you Plz. help me out
> of this problem.
> 

You make an ioctl() function for your file-system that returns
the block-size that you selected when you designed the system.


Cheers,
Dick Johnson
Penguin : Linux version 2.4.18 on an i686 machine (797.90 BogoMips).
Why is the government concerned about the lunatic fringe? Think about
it.

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