ratchov@ modified sys/dev/audio.c: Add a "record.enable" mixer knob to control recording. When recording is disabled, the device records silence. The control may be modified only by root and defaults to "off", ie. recording is disabled by default. ok florian, deraadt
Right. Linux has lots of bad security models too that throw away permission system in favor of complex userspace policy (dbus, polkit, pulseaudio, etc.)
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If a daemon is used, it literally should just use permissions on unix socket paths for access control.
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Again I'm not too familiar, but I believe it's more complicated then that. sndiod(8) is privsep on OpenBSD, and runs under separate users (_sndio/_sndiop). It uses a cookie for access control. http://man.openbsd.org/sndio#AUTHENTICATION …
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