Debian Bug report logs - #913696
debdelta: Script accesses internal dpkg database

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Subject: Re: Bug#913696: debdelta: Script accesses internal dpkg database
To: Guillem Jover <[email protected]>, [email protected]
References: <[email protected]>
From: A Mennucc1 <[email protected]>
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[Message part 1 (text/plain, inline)]

Dear Guillem,

I see your point;

but (as the name " dpkg_L_faster" suggests), using the dpkg commands to
obtain meta-information is quite slow; so I will have to think about it

BTW: you write

>  And finally, the contents and its format, will be changing in
> the near future.
May you please point me to some more info regarding this change?

Thanks,

a.

Il 14/11/18 04:13, Guillem Jover ha scritto:
> Source: debdelta
> Source-Version: 0.62
> Severity: important
> User: [email protected]
> Usertags: dpkg-db-access-blocker
>
> Hi!
>
> This package contains a script («debdelta»), which directly accesses
> the dpkg internal database, instead of using one of the public interfaces
> provided by dpkg. The code in do_patch_, should be switched to use:
>
>   «dpkg-query --showformat='${Conffiles}\n' --show»
>
> to fetch the list of conffiles. Then _symlink_data_tree should be switched
> to always use dpkg_L, and dpkg_L_faster should be removed. Finally the
> code handling 'old-control-tree' should be switched to use something like:
>
>   «dpkg-query --control-list»
>
>
> This is a problem for several reasons, because even though the layout and
> format of the dpkg database is administrator friendly, and it is expected
> that those might need to mess with it, in case of emergency, this
> “interface” does not extend to other programs besides the dpkg suite of
> tools. The admindir can also be configured differently at dpkg build or
> run-time. And finally, the contents and its format, will be changing in
> the near future.
>
> Thanks,
> Guillem
>

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