[systemd-devel] [PATCH] cryptsetup: craft a unique ID with the source device

[Harald Hoyer]

Am 29.05.2015 um 16:38 schrieb Lennart Poettering:
> On Fri, 29.05.15 16:30, Harald Hoyer (harald at redhat.com) wrote:
> 
>> Am 29.05.2015 um 16:26 schrieb Lennart Poettering:
>>> On Fri, 29.05.15 12:17, harald at redhat.com (harald at redhat.com) wrote:
>>>
>>>> From: Harald Hoyer <harald at redhat.com>
>>>>
>>>> If cryptsetup is called with a source device as argv[3], then craft the
>>>> ID for the password agent with a unique device path.
>>>>
>>>> If possible "/dev/block/<maj>:<min>" is used, otherwise the original
>>>> argv[3] is used.
>>>
>>> Why use the major/minor numebrs here? Why isn't the original device
>>> name good enough?
>>
>> Don't we want a kind of unique ID?
> 
> But the original device path is already unique? I mean, it's a path in
> the file heirarchy, that already makes it unique.
> 
> Or what do you mean by "unique"?
> 
> Lennart
> 

I was more thinking about symlinks pointing to the same device.