#!/bin/sh set -e # Exit immediately if a command exits with a non-zero status. set -u # Treat unset variables as an error. SND_DEV="/dev/snd" if [ ! -d "$SND_DEV" ]; then echo "sound not supported: device $SND_DEV not exposed to the container." exit 0 fi # Save the associated group. SND_GRP="$(find "$SND_DEV" -maxdepth 1 -not -type d -exec stat -c "%g" {} \; | sort -u | tail -n1)" echo "sound device group $SND_GRP." if [ -f /var/run/s6/container_environment/SUP_GROUP_IDS ]; then echo -n "," >> /var/run/s6/container_environment/SUP_GROUP_IDS fi echo -n "$SND_GRP" >> /var/run/s6/container_environment/SUP_GROUP_IDS # vim: set ft=sh :