Understanding Qubes /rw folder

apparatus · April 5, 2024, 6:18pm

It’s Qubes OS configuration.
Here’s the script that is making a link for the NM config files from /rw to /etc:

QubesOS/qubes-core-agent-linux/blob/main/network/network-manager-prepare-conf-dir

#!/bin/sh

# Source Qubes library.
# shellcheck source=init/functions
. /usr/lib/qubes/init/functions

if test -d /sys/fs/selinux; then enable_selinux=Z; else enable_selinux=''; fi
NM_CONFIG_DIR=/etc/NetworkManager/system-connections
if [ -d "$NM_CONFIG_DIR" ] && [ ! -h "$NM_CONFIG_DIR" ]; then
    mkdir "-p$enable_selinux" /rw/config/NM-system-connections
    mv ${enable_selinux:+-Z} "$NM_CONFIG_DIR"/* /rw/config/NM-system-connections/ 2> /dev/null || true
    rmdir "$NM_CONFIG_DIR"
    ln -s /rw/config/NM-system-connections "$NM_CONFIG_DIR"
fi

# Do not manage xen-provided network devices
unmanaged_devices=mac:fe:ff:ff:ff:ff:ff
#for mac in `xenstore-ls device/vif | grep mac | cut -d= -f2 | tr -d '" '`; do
#    unmanaged_devices="$unmanaged_devices;mac:$mac"
#done

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It’s this file in your template /lib/qubes/network-manager-prepare-conf-dir.