/usr/lib/nodejs/daemon/index.js is in node-daemon 1.1.0-1.
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 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 | var child_process = require('child_process');
// daemonize ourselves
module.exports = function(opt) {
// we are a daemon, don't daemonize again
if (process.env.__daemon) {
return process.pid;
}
var args = [].concat(process.argv);
// shift off node
args.shift();
// our script name
var script = args.shift();
opt = opt || {};
var env = opt.env || process.env;
// the child process will have this set so we can identify it as being daemonized
env.__daemon = true;
// start ourselves as a daemon
module.exports.daemon(script, args, opt);
// parent is done
return process.exit();
};
// daemonizes the script and returns the child process object
module.exports.daemon = function(script, args, opt) {
opt = opt || {};
var stdout = opt.stdout || 'ignore';
var stderr = opt.stderr || 'ignore';
var env = opt.env || process.env;
var cwd = opt.cwd || process.cwd;
var cp_opt = {
stdio: ['ignore', stdout, stderr],
env: env,
cwd: cwd,
detached: true
};
// spawn the child using the same node process as ours
var child = child_process.spawn(process.execPath, [script].concat(args), cp_opt);
// required so the parent can exit
child.unref();
return child;
};
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