Excerpts from Richard Shaw's message of Thu Oct 13 16:13:00 +0200 2011: > On Wed, Oct 12, 2011 at 8:16 PM, Dan Williams <dcbw@xxxxxxxxxx> wrote: > > udev replaced HAL, along with some additional helpers. udev has a > > database too, much like HAL. You can use libudev or libgudev (if you > > use glib) to talk to udev and get information. > > Ok, I found python-gudev which lets me talk to udev! > > And I thought the documentation on UDisks was poor. The only > documentation in the package is a README file with a bad link and a > test program. > You can use [1] (or look in your kernel source directory) for gudev API documentation. The python wrapper basically does 1:1 copy of the functions. > >> I've worked around that for testing the property > >> "DriveMediaCompatibility" > 0 since it returns an array but this would > >> also pick up flash card readers, zip, and jaz drives. I'll have to > >> modify that to look for "optical" on the front of any members of the > >> array. > >> > >> Second, I can not find any property that reports the disc capacity. > >> The only property that looked close is "DriveSize" but for a blank > >> disc this reports the same as the SectorSize, 2048. > > > > UDISKS_PARTITION_SIZE > > I'm thinking the equivalent in the python wrapper is "PartitionSize". > The problem is that it AND "DeviceSize" both report 2048... There is still a possibility there is a bug (or a missing feature) in udisks. Maybe have a look at udisks/udev bug tracker? > Right now I'm using the test program provided with python-gudev and I > think I'm making headway. It has a property "ID_TYPE" that is "cd" for > optical drives so that's one problem down. Now I just have to figure > out how to: > > 1. Get the drive capacity. > 2. Get the media state. > 3. Detect and properly handle media changes. Good luck finding what you are looking for, [1] ftp://slackware.oregonstate.edu/pub/linux/utils/kernel/hotplug/gudev/index.html -- Stanislav Ochotnicky <sochotnicky@xxxxxxxxxx> Software Engineer - Base Operating Systems Brno PGP: 7B087241 Red Hat Inc. http://cz.redhat.com
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