Re: Getting HDD serial in kernel space
From: Alan Cox
Date: Sat Nov 14 2009 - 10:26:43 EST
On Sat, 14 Nov 2009 14:34:54 +0300
Andrey Polovov <andrey.polovov@xxxxxxxxx> wrote:
> Hello.
>
> I had a necessity to get HDD serial number in my kernel module.
> In user space I can do it so:
>
> fd = open( "/dev/sda", O_RDONLY|O_NONBLOCK );
> ioctl( fd, HDIO_GET_IDENTITY, &id );
> printf( "Serial: %s", id.serial_no );
>
> How can I do it in kernel space (it is one hdd in machine, plugged with
> SATA)?
The identity when probed is all in the struct ata_device, although be
aware that it may not be unique per device and also that hotplug means
you need to be careful how you access it. Now and then you meet a device
where the serial number changes randomly each boot just to really annoy.
What are you actually trying to do ?
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