From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: Andrey Polovov <andrey.polovov@gmail.com>
Cc: linux-kernel@vger.kernel.org
Subject: Re: Getting HDD serial in kernel space
Date: Sat, 14 Nov 2009 15:28:26 +0000 [thread overview]
Message-ID: <20091114152826.014cfc35@lxorguk.ukuu.org.uk> (raw)
In-Reply-To: <4AFE95DE.3070308@gmail.com>
On Sat, 14 Nov 2009 14:34:54 +0300
Andrey Polovov <andrey.polovov@gmail.com> 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 ?
next prev parent reply other threads:[~2009-11-14 15:26 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-11-14 11:34 Andrey Polovov
2009-11-14 15:28 ` Alan Cox [this message]
2009-11-15 14:03 ` Andrey Polovov
2009-11-15 17:05 ` Alan Cox
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