[dm-crypt] How to recognize a LUKS container

Michael Kjörling michael at kjorling.se
Wed Sep 23 09:50:56 CEST 2015

On 23 Sep 2015 02:29 +0000, from hmccurdy at yahoo.com (H McCurdy):
> I might have figured it out but can't test my idea until tomorrow. 
> My thought is to try to access it as if it exists and if the
> function returns -1, then it's not a valid LUKS container.  Anyway,
> that's my idea.

For the scenario you describe, something like

# test -r $DEVICE && cryptsetup isLuks $DEVICE && echo It is LUKS

is probably the best bet.

Michael Kjörling • https://michael.kjorling.semichael at kjorling.se
OpenPGP B501AC6429EF4514 https://michael.kjorling.se/public-keys/pgp
                 “People who think they know everything really annoy
                 those of us who know we don’t.” (Bjarne Stroustrup)

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