Created attachment 131529 [details] [review]
0003-Add-cmdline-options-to-specify-a-device.patch

+        { "device-file", 0, 0, G_OPTION_ARG_FILENAME, &device_file, N_("Device file to show"), N_("FILE") },
+        { "presentable", 0, 0, G_OPTION_ARG_STRING, &presentable_id, N_("Presentable to show"), N_("ID") },

Not sure this makes sense. We should instead have

 --show-volume <device>    Volume to show
 --show-drive <device>     Drive to show

In addition we need to handle single-instance properly; suggest to do this via libunique for now.

I've filed bug 577353 for the unique application issue.

Adding it as a dep then.

Created attachment 131742 [details] [review]
another try

Created attachment 131747 [details] [review]
redo on top of unique application support

Created attachment 131780 [details] [review]
return nonzero exit code depending on unique response

(In reply to comment #7)
> Created an attachment (id=131780) [edit]
> return nonzero exit code depending on unique response
> 

Committed, thanks! I've also nuked the nagging dialog in a subsequent commit.

Let's deal with the dialog issues in bug 577353.

Btw, I just added a patch to return a non-zero exit code if the requested drive/volume doesn't exist.