[Bug 260489] Permissions on audio and midi devices

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=260489

            Bug ID: 260489
           Summary: Permissions on audio and midi devices
           Product: Base System
           Version: Unspecified
          Hardware: Any
                OS: Any
            Status: New
          Severity: Affects Some People
          Priority: ---
         Component: misc
          Assignee: bugs@FreeBSD.org
          Reporter: meka@tilda.center

To give just an example, /dev/umidi* have 644 perms, which means I can read
MIDI in, but not write to MIDI out. I spent hours trying to identify faulty
cable only to realize it's the device file that doesn't have proper
permissions. My suggestion is to either have audio group with rw permissions on
dsp, midi and umidi devices or to adjust permissions on those devices so
everyone can read and write. I slightly prefer dedicated audio group as that
way I can limit who has access to audio hardware. I am posting here for a
discussion and whatever we decide, I'll be glad to implement.

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