Function runCommandWithFallbacks

src/cmd/run.go:357–490

(container string,
	preserveFDs uint,
	command, environ []string,
	emitEscapeSequence, fallbackToBash bool)

}

func runCommandWithFallbacks(container string,
	preserveFDs uint,
	command, environ []string,
	emitEscapeSequence, fallbackToBash bool) error {

	logrus.Debug("Checking if 'podman exec' supports disabling the detach keys")

	var detachKeysSupported bool

	if podman.CheckVersion("1.8.1") {
		logrus.Debug("'podman exec' supports disabling the detach keys")
		detachKeysSupported = true
	}

	envOptions := utils.GetEnvOptionsForPreservedVariables()
	for _, env := range environ {
		logrus.Debugf("%s", env)
		envOption := "--env=" + env
		envOptions = append(envOptions, envOption)
	}

	preserveFDsString := fmt.Sprint(preserveFDs)

	var stderr io.Writer
	var ttyNeeded bool

	if term.IsTerminal(os.Stdin) && term.IsTerminal(os.Stdout) {
		ttyNeeded = true
		if logLevel := logrus.GetLevel(); logLevel >= logrus.DebugLevel {
			stderr = os.Stderr
		}
	} else {
		stderr = os.Stderr
	}

	runFallbackCommandsIndex := 0
	runFallbackWorkDirsIndex := 0
	workDir := workingDirectory

	for {
		execArgs := constructExecArgs(container,
			preserveFDsString,
			command,
			detachKeysSupported,
			envOptions,
			fallbackToBash,
			ttyNeeded,
			workDir)

		if emitEscapeSequence {
			fmt.Printf("\033]777;container;push;%s;toolbox;%s\033\\", container, currentUser.Uid)
		}

		logrus.Debugf("Running in container %s:", container)
		logrus.Debug("podman")
		for _, arg := range execArgs {
			logrus.Debugf("%s", arg)
		}