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From: "Pali Rohár" <pali.rohar@gmail.com>
To: linux-bluetooth@vger.kernel.org
Subject: OCF_READ_LOCAL_CODECS is permitted only for root user
Date: Sat, 28 Dec 2019 18:12:12 +0100	[thread overview]
Message-ID: <20191228171212.56anj4d4kvjeqhms@pali> (raw)

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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.

-- 
Pali Rohár
pali.rohar@gmail.com

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             reply	other threads:[~2019-12-28 17:12 UTC|newest]

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-12-28 17:12 Pali Rohár [this message]
2020-01-04  9:44 ` OCF_READ_LOCAL_CODECS is permitted only for root user Marcel Holtmann
2020-01-04 10:24   ` Pali Rohár
2020-02-09 13:21     ` Pali Rohár
2020-04-14 22:56       ` Removal of HCI commands? (Was: Re: OCF_READ_LOCAL_CODECS is permitted only for root user) Pali Rohár
2020-08-08 13:27         ` Pali Rohár
2020-09-29 21:32           ` Removal of HCI commands, userspace bluetooth regression? Pali Rohár
2020-09-30  8:02             ` Greg Kroah-Hartman
2020-09-30  8:16               ` Marcel Holtmann
2020-09-30  9:20                 ` Greg Kroah-Hartman
2020-09-30  9:49                   ` Pali Rohár
2020-09-30  8:25               ` Pali Rohár
2020-09-30  9:20                 ` Greg Kroah-Hartman
2020-09-30  9:46                   ` Pali Rohár
2020-09-30 10:54                     ` Greg Kroah-Hartman
2020-09-30 11:00                       ` Pali Rohár
2020-09-30 11:20                         ` Greg Kroah-Hartman
2020-09-30 11:51                           ` Pali Rohár
2020-09-30 12:02                             ` Greg Kroah-Hartman

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