Re: Linux kernel API about sector count

[韩磊]

Thank you! I need disk's total count of sector,not the sector size.

2013/11/11 Mihai DonÈu <mihai.dontu@xxxxxxxxx>:
> On Mon, 11 Nov 2013 20:31:14 +0800 éç 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 DonÈu
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