From: Phillip Susi <psusi@cfl.rr.com>
To: Karel Zak <kzak@redhat.com>
Cc: linux-kernel@vger.kernel.org
Subject: Re: [PATCH 2/2] Add BLKPG_GET_PARTITION operation
Date: Thu, 08 Dec 2011 09:25:31 -0500 [thread overview]
Message-ID: <4EE0C8DB.7070904@cfl.rr.com> (raw)
In-Reply-To: <20111208123534.GB16493@nb.redhat.com>
On 12/8/2011 7:35 AM, Karel Zak wrote:
> On Wed, Nov 30, 2011 at 10:23:44PM -0500, Phillip Susi wrote:
>> -----BEGIN PGP SIGNED MESSAGE-----
>> Hash: SHA1
>>
>> Add a new operation to the BLKPG ioctl to read the partition.
>> This allows user space to find the current start and length
>> of a partition without having to open the partition and use
>> the long depreciated HDIO_GETGEO ioctl.
>
> $ cat /sys/block/sda/sda1/{size,start}
> 4096000
> 2048
>
> ...is probably the best way if you want to avoid problems with
> permissions and deprecated (or all) ioctls :-)
Yes, I patched parted to grab the values from sysfs and only use
HDIO_GETGEO if that fails, but I thought an ioctl would be preferable (
no need to muck about with appending partition numbers to paths and
parsing text and such ), and it seemed an orthogonal operation to the
other BLKPG ops.
prev parent reply other threads:[~2011-12-08 16:34 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <cover.1322709471.git.psusi@cfl.rr.com>
2011-12-01 3:23 ` [PATCH 1/2] Add partition resize function to BLKPG ioctl Phillip Susi
2011-12-08 12:30 ` Karel Zak
2011-12-08 14:22 ` Phillip Susi
2011-12-08 15:16 ` Karel Zak
2011-12-08 15:25 ` Phillip Susi
2011-12-08 15:58 ` Vivek Goyal
2011-12-08 16:06 ` Phillip Susi
2011-12-08 16:28 ` Vivek Goyal
2011-12-08 16:55 ` Phillip Susi
2011-12-09 2:53 ` Phillip Susi
2011-12-12 14:53 ` Vivek Goyal
2011-12-12 17:43 ` Phillip Susi
2011-12-12 17:49 ` Joe Perches
2011-12-12 18:04 ` Vivek Goyal
2011-12-13 0:15 ` Phillip Susi
2011-12-13 0:16 ` Phillip Susi
2011-12-13 0:16 ` [PATCH 2/2] Add BLKPG_GET_PARTITION operation Phillip Susi
2011-12-19 20:25 ` [PATCH 1/2] Add partition resize function to BLKPG ioctl Vivek Goyal
2011-12-21 1:53 ` Phillip Susi
2011-12-21 1:54 ` Phillip Susi
2011-12-21 1:54 ` [PATCH 2/2] Add BLKPG_GET_PARTITION operation Phillip Susi
2011-12-21 20:46 ` [PATCH 1/2] Add partition resize function to BLKPG ioctl Vivek Goyal
2011-12-24 21:36 ` Phillip Susi
2011-12-24 22:21 ` Phillip Susi
2011-12-24 22:21 ` [PATCH 2/2] Add BLKPG_GET_PARTITION operation Phillip Susi
2011-12-01 3:23 ` Phillip Susi
2011-12-08 12:35 ` Karel Zak
2011-12-08 14:25 ` Phillip Susi [this message]
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