[PATCH 0/3] PolicyKit - Add Shadow authorisation database

[Carlos Corbacho]

David, Piter,

The following three patches will integrate Piter's work into PolicyKit.

Patch 1: PAM header cleanups (pretty trivial)

Patch 2: Major build system overhaul -> this throws away the old 
POLKIT_AUTHDB_DEFAULT variable, since it doesn't really make any sense.

What PolicyKit really does for the authorisation database can be boiled down 
to 'build dummy backend' or 'don't build dummy backend', of which PAM and 
shadow are just specifics of the latter - trying to sprinkle 'default' 
throughout the code base doesn't make much sense; instead, I've hardcoded 
configure to set the default to pick PAM (although, in future, this could be 
changed so that the 'default' is if PAM is detected, use PAM; otherwise, pick 
Shadow) - as opposed to the current state, where default just is PAM, and 
there is no PAM option.

So all POLKIT_AUTHDB_DEFAULT tests are essentially replaced with testing 
for !POLKIT_AUTHDB_DEFAULT.

The PAM specific bits in the code are then wrapped around with a new variable, 
POLKIT_AUTHDB_PAM (which makes it easy to then add the shadow specific bits 
later, or any other authentication helper in future).

Patch 3: Add Piter's shadow work -> This depends on the previous two patches.

-Carlos
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E-Mail: carlos at strangeworlds.co.uk
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