2 files changed, 15 insertions(+), 8 deletions(-)

M README.md
M gmixerctl/gui.py

@@ 34,6 34,16 @@ the mixerctl command itself.
 python3 setup.py install
 ```
 
+If you would like to be able to change the output device(s) that sndiod should
+use, you should add the following lines to `/etc/doas.conf`.
+
+```
+permit nopass youruser as root cmd /usr/sbin/rcctl args set sndiod flags -f rsnd/0
+permit nopass youruser as root cmd /usr/sbin/rcctl args set sndiod flags -f rsnd/1
+permit nopass youruser as root cmd /usr/sbin/rcctl args set sndiod flags -f rsnd/2
+permit nopass youruser as root cmd /usr/sbin/rcctl args restart sndiod
+```
+
 ## Contributing
 
 Contributions are more than welcome. If there is a feature you would like added


@@ 55,15 65,9 @@ appreciate help implementing the following features:
 
 ## Known Issues
 
-* Configuring sndiod requires giving the user running gmixerctl access to run
-  `/usr/sbin/rcctl` as root. This is overly broad, but I am unsure of the
-  correct way to handle this, since limiting arguments with `doas.conf`
-  requires knowing the exact set of arguments in advance.
-
 * The information displayed in the "sndiod" tab does not update once the
   application has started.
 
-
 ## Rationale
 
 My first attempt at writing gmixerctl was in the form of an imgui based C++

@@ 79,8 79,11 @@ class SndiodButton(tkinter.Button):
         except Exception as e:
             tkinter.messagebox.showwarning(
                         "Apply Changes",
-                        "Failed to apply rcctl flags. Maybe you need to add" +
-                        "\n\npermit nopass youruser as root cmd /usr/sbin/rcctl" +
+                        "Failed to apply rcctl flags. Maybe you need to add\n" +
+                        "permit nopass youruser as root cmd /usr/sbin/rcctl args set sndiod flags -f rsnd/0\n" +
+                        "permit nopass youruser as root cmd /usr/sbin/rcctl args set sndiod flags -f rsnd/1\n" +
+                        "permit nopass youruser as root cmd /usr/sbin/rcctl args set sndiod flags -f rsnd/2\n" +
+                        "permit nopass youruser as root cmd /usr/sbin/rcctl args restart sndiod\n" +
                         "\n\nto /etc/doas.conf ?" +
                         "\n\nerror was:\n\n{}".format(e)
                     )