/etc/oss4/conf/oss_userdev.conf is in oss4-base 4.2-build2007-2.1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 | # Open Sound System configuration file
# Remove the '#' in front of the option(s) you like to set.
#
#
# By default the oss_userdev driver will not create private device nodes
# for the client side devices. Instead all client devices will share
# the same device node (/dev/oss/oss_userdev/client).
#
# If userdev_visible_clientnodes is set to 1 then each oss_userdev instance
# will have private device node (/dev/oss/oss_userdev0/pcmN) that can be
# opened directly. This mode can be used when the oss_userdev driver is used
# for multiple purposes in the same system.
#
#userdev_visible_clientnodes=0
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