Method Execute

devcontainer/script.go:83–125

(ctx context.Context, uid, gid int)

}

func (s *LifecycleScript) Execute(ctx context.Context, uid, gid int) error {
	procAttr := &syscall.ProcAttr{
		Env:   os.Environ(),
		Files: []uintptr{os.Stdin.Fd(), os.Stdout.Fd(), os.Stderr.Fd()},
		Sys: &syscall.SysProcAttr{
			Credential: &syscall.Credential{
				Uid: uint32(uid),
				Gid: uint32(gid),
			},
		},
	}

	var eg errgroup.Group
	for desc, command := range s.shellCommands {
		desc := desc
		command := command
		eg.Go(func() error {
			pid, err := syscall.ForkExec("/bin/sh", []string{"/bin/sh", "-c", command}, procAttr)
			if err != nil {
				return fmt.Errorf("lifecycle command %q failed: %v", desc, err)
			}
			return waitForCommand(desc, pid)
		})
	}

	for desc, commandAndArgs := range s.nonShellCommands {
		desc := desc
		commandAndArgs := commandAndArgs
		eg.Go(func() error {
			path, err := exec.LookPath(commandAndArgs[0])
			if err != nil {
				return err
			}
			pid, err := syscall.ForkExec(path, commandAndArgs, procAttr)
			if err != nil {
				return fmt.Errorf("failed to exec lifecycle command %q: %v", desc, err)
			}
			return waitForCommand(desc, pid)
		})
	}

	return eg.Wait()
}

func waitForCommand(desc string, pid int) error {
	process, err := os.FindProcess(pid)