Small Python script that locks all XScreenSaver instances running on a system – useful for suspend to … scripts

xscreensaver-lockall

#!/usr/bin/python2
# vim: set fileencoding=utf-8 syntax=python tabstop=8 softtabstop=8 shiftwidth=8 noexpandtab:

import os, os.path, psutil

def procenv(pid):
	try:
		env_fd = open(os.path.join('/proc', str(pid), 'environ'), 'r')
		environ = env_fd.read()
		env_fd.close()
		return {e[0]:e[2] for e in [e.partition('=') for e in environ.split('\0')]}
	except:
		pass
	return {}

if __name__ == '__main__':
	for proc in [p for p in psutil.process_iter() if 'xscreensaver' == p.name()]:
		env = procenv(proc.pid)
		if not 'DISPLAY' in env.keys():
			continue
		display = env['DISPLAY']
		xauthority = env['XAUTHORITY'] if 'XAUTHORITY' in env.keys() else os.path.join(env['HOME'], '.Xauthority')
		pid = os.fork()
		if 0 == pid:
			exe = 'xscreensaver-command'
			os.execvpe(exe, [exe, '--lock'], {'DISPLAY':display, 'XAUTHORITY':xauthority})