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Date: Mon, 11 Nov 2013 15:05:07 +0200
From: Mihai Donțu <mihai.dontu@...il.com>
To: 韩磊 <bonben1989@...il.com>
Cc: Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: Linux kernel API about sector count
On Mon, 11 Nov 2013 20:31:14 +0800 韩磊 wrote:
> Can you tell me the API about the count of sector in linux kernel?
>
> which .h file and function?
>
Looking at fdisk (util-linux) there are several ioctls:
* HDIO_GETGEO (linux/hdreg.h)
* BLKGETSIZE64 (linux/fs.h), sector size is assumed 512
The HDIO interface *seems* to be legacy:
http://www.mjmwired.net/kernel/Documentation/ioctl/hdio.txt
Also see:
https://git.kernel.org/cgit/utils/util-linux/util-linux.git/tree/fdisks/fdisk.c
I hope this helps a bit.
--
Mihai Donțu
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