Re: Linux kernel API about sector count

[韩磊]

 I need a API in linux kernel about the disk's total count of
sector,not the sector size.
thank you!


2013/11/11 éç <bonben1989@xxxxxxxxx>:
> 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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