Module daemon 

Unix daemonization for pwr-server.

Implements the classic double-fork daemonization pattern:

1. Fork → parent exits, child continues
2. setsid() to become session leader
3. Second fork → child exits, grandchild continues (prevents re-acquisition of a controlling terminal)
4. chdir(“/”), umask(0), redirect stdio to /dev/null
5. Write PID file

Constants

SYSTEM_PID_FILE

Default path for the PID file written after successful daemonization (system-wide install).

Functions

daemonize

Daemonize the current process.

pid_file_for_config

Given a config file path, return the appropriate PID file.

stop_daemon

Stop a running pwr-server daemon.

user_pid_file

Return the PID file path for a user-level install.