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manpages: Add ENOPROTOOPT error in aa_getcon() manpage

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Sergio Costas 2024-01-30 09:33:47 +00:00 • committed by John Johansen
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libraries/libapparmor/doc/aa_getcon.pod
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@ -116,6 +116,14 @@ The specified I<file/task> does not exist or is not visible.
The confinement data is too large to fit in the supplied buffer.
=item B<ENOPROTOOPT>
The kernel doesn't support the SO_PEERLABEL option in sockets. This happens
mainly when the kernel lacks 'fine grained unix mediation' support. It also
can happen on LSM stacking kernels where another LSM has claimed this
interface and decides to return this error, although this is really a
corner case.
=back
=head1 NOTES