Inconsistent storage.bus and storage.originating_device info

[Dan Williams]

On Sun, 2009-09-20 at 15:51 +0100, Baz Walter wrote:
> hello
> 
> i'm writing a small application for portable audio players which needs 
> to get the vendor_id and some properties from the portable_audio_player 
> namespace. at the moment, i use dbus to search for all devices with 
> storage.bus == usb, and then use the storage.originating_device to check 
> the vendor_id.

You want '.subsystem', not .bus.  .bus has been deprecated for quite a
long time.

What HAL version are you using?

Dan

> unfortunately, sometimes this works and sometimes it doesn't. what i'm 
> finding is that (apparently ramdomly) the bus will be shown as "pci", 
> the originating_device as "/org/freedesktop/Hal/devices/computer", and 
> all the portable_audio_player properties will be missing. other than 
> showing the wrong information, though, the device works totally 
> correctly (it's a Samsung YP-P3).
> 
> looking in gnome-device-manager i see that the SCSI Host Adapter for the 
>   relevant Mass Storage Drive appears as a child of the USB Device 
> rather than the USB Mass Storage Interface. The correct UMS interface is 
> there - it just isn't linked to the correct SCSI Host Adapter.
> 
> so is this a problem with hal, or with hal-info?
> 
> is there a reliable way to get the relevant UMS Interface that doesn't 
> depend on querying storage.originating_device?
> 
> some info about my setup:
> 
> distro: mandriva 2009.1
> hal : 0.5.12-0.rc1.20090403.1mdv2009.1
> hal-info : 0.0-5.20090414.1mdv2009.1
> udev : 140-3.2mnb2
> hotplug : 2.4.4-2mdv2009.1
> kernel : 2.6.29.6-2mnb2
> policykit : 0.9-5mdv2009.1
> consolekit : 0.3.0-5mdv2009.1
> 
> TIA
> baz walter
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