Re: Restoring file capabilities in /usr
On 2022-02-16 20:03 +0100, deb@x.org.pl wrote:
> Is there an easy method of restoring original file capabilities for the
> entire /usr directory?
>
> The background is I wanted to move my /usr directory to another
> partition and I copied it with "cp -ar ..." and deleted the original
> content of /usr to find out my ping does not work because of the lack of
> the required capabilities for the binary.
> That is not too much of an issue, because I can fix the ping command.
> However, I am afraid there might be some other binaries lurking to bite
> me when I need it least...
>
> Is there an easy method (like apt based for instance) of restoring file capabilities for the whole
> /usr directory?
Capabilities are currently not stored in Debian packages, but are set up
by the postinst scripts. Here is how to find them:
$ grep -w -l setcap /var/lib/dpkg/info/*.postinst
Reinstall the affected packages (likely there are only a few of them),
and you should be fine.
Cheers,
Sven
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