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Date:   Sat, 28 Dec 2019 18:12:12 +0100
From:   Pali =?utf-8?B?Um9ow6Fy?= <pali.rohar@gmail.com>
To:     linux-bluetooth@vger.kernel.org
Subject: OCF_READ_LOCAL_CODECS is permitted only for root user
Message-ID: <20191228171212.56anj4d4kvjeqhms@pali>
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Hello!

I wrote a simple script "sco_features.pl" which show all supported
codecs by local HCI bluetooth adapter. Script is available at:

https://github.com/pali/hsphfpd-prototype/blob/prototype/sco_features.pl

And I found out that OCF_READ_LOCAL_CODECS HCI command cannot be send by
non-root user. Kernel returns "Operation not permitted" error.

What is reason that kernel blocks OCF_READ_LOCAL_CODECS command for
non-root users? Without it (audio) application does not know which
codecs local bluetooth adapter supports.

E.g. OCF_READ_LOCAL_EXT_FEATURES or OCF_READ_VOICE_SETTING commands can
be send also by non-root user and kernel does not block them.

--=20
Pali Roh=C3=A1r
pali.rohar@gmail.com

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