Beispiel #1
0
func setupDumpStackTrap(root string) {
	// Windows does not support signals like *nix systems. So instead of
	// trapping on SIGUSR1 to dump stacks, we wait on a Win32 event to be
	// signaled. ACL'd to builtin administrators and local system
	ev := "Global\\docker-daemon-" + fmt.Sprint(os.Getpid())
	sd, err := winio.SddlToSecurityDescriptor("D:P(A;;GA;;;BA)(A;;GA;;;SY)")
	if err != nil {
		logrus.Errorf("failed to get security descriptor for debug stackdump event %s: %s", ev, err.Error())
		return
	}
	var sa syscall.SecurityAttributes
	sa.Length = uint32(unsafe.Sizeof(sa))
	sa.InheritHandle = 1
	sa.SecurityDescriptor = uintptr(unsafe.Pointer(&sd[0]))
	h, err := system.CreateEvent(&sa, false, false, ev)
	if h == 0 || err != nil {
		logrus.Errorf("failed to create debug stackdump event %s: %s", ev, err.Error())
		return
	}
	go func() {
		logrus.Debugf("Stackdump - waiting signal at %s", ev)
		for {
			syscall.WaitForSingleObject(h, syscall.INFINITE)
			signal.DumpStacks(root)
		}
	}()
}
Beispiel #2
0
// setupConfigReloadTrap configures a Win32 event to reload the configuration.
func (cli *DaemonCli) setupConfigReloadTrap() {
	go func() {
		sa := syscall.SecurityAttributes{
			Length: 0,
		}
		ev := "Global\\docker-daemon-config-" + fmt.Sprint(os.Getpid())
		if h, _ := system.CreateEvent(&sa, false, false, ev); h != 0 {
			logrus.Debugf("Config reload - waiting signal at %s", ev)
			for {
				syscall.WaitForSingleObject(h, syscall.INFINITE)
				cli.reloadConfig()
			}
		}
	}()
}
Beispiel #3
0
// setupConfigReloadTrap configures a Win32 event to reload the configuration.
func setupConfigReloadTrap(configFile string, flags *mflag.FlagSet, reload func(*daemon.Config)) {
	go func() {
		sa := syscall.SecurityAttributes{
			Length: 0,
		}
		ev := "Global\\docker-daemon-config-" + fmt.Sprint(os.Getpid())
		if h, _ := system.CreateEvent(&sa, false, false, ev); h != 0 {
			logrus.Debugf("Config reload - waiting signal at %s", ev)
			for {
				syscall.WaitForSingleObject(h, syscall.INFINITE)
				daemon.ReloadConfiguration(configFile, flags, reload)
			}
		}
	}()
}
Beispiel #4
0
// Copied over from docker/daemon/debugtrap_windows.go
func setupDumpStackTrap() {
	go func() {
		sa := syscall.SecurityAttributes{
			Length: 0,
		}
		ev := "Global\\docker-daemon-" + fmt.Sprint(os.Getpid())
		if h, _ := system.CreateEvent(&sa, false, false, ev); h != 0 {
			logrus.Debugf("Stackdump - waiting signal at %s", ev)
			for {
				syscall.WaitForSingleObject(h, syscall.INFINITE)
				signal.DumpStacks()
			}
		}
	}()
}
Beispiel #5
0
func setupDumpStackTrap() {
	// Windows does not support signals like *nix systems. So instead of
	// trapping on SIGUSR1 to dump stacks, we wait on a Win32 event to be
	// signaled.
	go func() {
		sa := syscall.SecurityAttributes{
			Length: 0,
		}
		ev := "Global\\docker-daemon-" + fmt.Sprint(os.Getpid())
		if h, _ := system.CreateEvent(&sa, false, false, ev); h != 0 {
			logrus.Debugf("Stackdump - waiting signal at %s", ev)
			for {
				syscall.WaitForSingleObject(h, syscall.INFINITE)
				psignal.DumpStacks()
			}
		}
	}()
}