https://stackoverflow.com/questions/17954432/creating-a-daemon-in-linux/17955149#17955149
(foreground bool)
| 33 | |
| 34 | // https://stackoverflow.com/questions/17954432/creating-a-daemon-in-linux/17955149#17955149 |
| 35 | func daemonMain(foreground bool) { |
| 36 | configuration, err := server.DefaultConfiguration() |
| 37 | verifyFatal(err) |
| 38 | if foreground { |
| 39 | daemonProc(configuration, 0) |
| 40 | } |
| 41 | |
| 42 | logDir := configuration.GetLogDir() |
| 43 | err = util.CreateDirIfNotExists(logDir) |
| 44 | verifyFatal(err) |
| 45 | |
| 46 | runDir := configuration.GetRunDir() |
| 47 | err = util.CreateDirIfNotExists(runDir) |
| 48 | verifyFatal(err) |
| 49 | |
| 50 | executable, err := os.Executable() |
| 51 | verifyFatal(err) |
| 52 | |
| 53 | sigqueue := make(chan os.Signal, 1) |
| 54 | signal.Notify(sigqueue, unix.SIGUSR1) |
| 55 | go func() { |
| 56 | time.Sleep(time.Second * 2) |
| 57 | sigqueue <- unix.SIGUSR2 |
| 58 | }() |
| 59 | |
| 60 | pid := os.Getpid() |
| 61 | cmdArgs := []string{executable, "api", "forked-daemon", strconv.Itoa(pid)} |
| 62 | cmd := exec.Command(executable, cmdArgs[1:]...) |
| 63 | err = cmd.Start() |
| 64 | if err != nil { |
| 65 | err = fmt.Errorf("command failed %q: %w", shells.Quote(cmdArgs), err) |
| 66 | fatal(err) |
| 67 | } |
| 68 | |
| 69 | s := <-sigqueue |
| 70 | if s != unix.SIGUSR1 { |
| 71 | panic(fmt.Errorf("could not wait for daemon")) |
| 72 | } |
| 73 | } |
| 74 | |
| 75 | func cleanFile(file string) (err error) { |
| 76 | err = os.Remove(file) |
no test coverage detected