Function prepare_system_with_config

pub fn prepare_system_with_config(
    config_data: &[u8],
) -> Result<(Vec<ExtendedUserMapping>, BackgroundProcess), Error>

Prepares a system for use with Signstar.

Prepares the following:

• Creates /etc/machine-id, which is needed for systemd-creds to function.
• Reads Signstar configuration from data and writes to default config location.
• Creates /run/systemd/io.systemd.Credentials by running systemd-socket-activate in the background

Returns the list of ExtendedUserMappings derived from the Signstar configuration and the BackgroundProcess returned from start_credentials_socket.

Errors

Returns an error if

• write_machine_id fails,
• a new HermeticParallelConfig can not be created from config_data,
• a HermeticParallelConfig can not be saved to a system-wide location,
• or start_credentials_socket fails.