iobroker.backitup/lib/scripts/98-umount.js

Backitup enables the cyclic creation of backups of an IoBroker / Homematic installation

'use strict';
const child_process = require('child_process');
const fs = require('fs');

function command(options, log, callback) {
    if (!options.mount) {
        return callback('NO mount path specified!');
	}
	let rootUmount = 'umount';
    if (options.sudo === 'true' || options.sudo === true) {
        rootUmount = 'sudo umount';
    }
	if (options.mountType === 'CIFS' || options.mountType === 'NFS') {
		if (fs.existsSync(options.fileDir + '/.mount')) {
			child_process.exec(`mount | grep -o "${options.backupDir}"`, (error, stdout, stderr) => {
                if(stdout.indexOf(options.backupDir) != -1) {
					log.debug('mount activ... umount in 60 Seconds!!');
					setTimeout(function() {
						child_process.exec(`${rootUmount} ${options.backupDir}`, (error, stdout, stderr) => {
							if (error) {
								log.debug('device is busy... wait 10 Minutes!!');
								setTimeout(function() {
									child_process.exec(`${rootUmount} ${options.backupDir}`, (error, stdout, stderr) => {
										if (error) {
											options.context.errors.umount = error;
											log.error(stderr);
											callback(error)
										} else {
											options.context.done.push('umount');
											fs.existsSync(options.fileDir + '/.mount') && fs.unlinkSync(options.fileDir + '/.mount');
											callback(null, stdout);
										}
									});
								}, 600000);
							} else {
								options.context.done.push('umount');
								fs.existsSync(options.fileDir + '/.mount') && fs.unlinkSync(options.fileDir + '/.mount');
								callback(null, stdout);
							}
						});
					}, 60000);
				}
			});
		}
	} else {
		callback(null);
	}
}

module.exports = {
    command,
    ignoreErrors: true
};