Esempio n. 1
0
func New(containerDepotPath, binPath string, runner command_runner.CommandRunner) (*LinuxQuotaManager, error) {
	dfOut := new(bytes.Buffer)

	df := &exec.Cmd{
		Path:   "df",
		Args:   []string{"-P", containerDepotPath},
		Stdout: dfOut,
	}

	err := runner.Run(df)
	if err != nil {
		return nil, err
	}

	dfOutputWords := strings.Split(string(dfOut.Bytes()), " ")
	mountPoint := strings.Trim(dfOutputWords[len(dfOutputWords)-1], "\n")

	return &LinuxQuotaManager{
		enabled: true,

		binPath: binPath,
		runner:  runner,

		mountPoint: mountPoint,
	}, nil
}
Esempio n. 2
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func NewBigApp(runner command_runner.CommandRunner, appPath string, sizeInMegabytes int) (*BigApp, error) {
	tempDirName, err := ioutil.TempDir("", "big-app")
	if err != nil {
		return nil, err
	}

	cmd := &exec.Cmd{Path: "cp", Args: []string{"-r", appPath + "/", tempDirName}}

	err = runner.Run(cmd)
	if err != nil {
		return nil, err
	}

	ddOutputArg := "of=" + tempDirName + "/payload"
	ddCountArg := fmt.Sprintf("count=%d", sizeInMegabytes)

	cmd = &exec.Cmd{Path: "dd", Args: []string{"if=/dev/urandom", ddOutputArg, ddCountArg, "bs=1048576"}}

	err = runner.Run(cmd)
	if err != nil {
		return nil, err
	}

	return &BigApp{
		Location: tempDirName,
		runner:   runner,
		Name:     "big-app-" + generator.RandomName(),
	}, nil
}
Esempio n. 3
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func (c *BtrfsCleaningCake) run(runner command_runner.CommandRunner, cmd *exec.Cmd) (string, error) {
	var buffer bytes.Buffer
	cmd.Stdout = &buffer
	if err := runner.Run(cmd); err != nil {
		return "", err
	}
	return buffer.String(), nil
}
Esempio n. 4
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func (n *rule) destroy(chain string, runner command_runner.CommandRunner) error {
	return runner.Run(exec.Command("/sbin/iptables", flags("-D", chain, n)...))
}