On Tue, 2013-11-12 at 10:52 +0800, 韩磊 wrote: > I need a API in linux kernel about the disk's total count of > sector,not the sector size. > thank you!
Have you even tried searching through the code? Take a look at how fdisk or blockdev or any other tool that deals with devices get the total sectors, ie: blockdev --getsize /dev/sda1 Then follow the path for such ioctl in the in the kernel source. > > > 2013/11/11 韩磊 <bonben1...@gmail.com>: > > Thank you! I need disk's total count of sector,not the sector size. > > > > 2013/11/11 Mihai Donțu <mihai.do...@gmail.com>: > >> 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 > -- > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to majord...@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/ -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
