Function v1MountPoint

cgroup1/v1.go:49–73

v1MountPoint returns the mount point where the cgroup mountpoints are mounted in a single hierarchy

()

// v1MountPoint returns the mount point where the cgroup
// mountpoints are mounted in a single hierarchy
func v1MountPoint() (string, error) {
	f, err := os.Open("/proc/self/mountinfo")
	if err != nil {
		return "", err
	}
	defer f.Close()
	scanner := bufio.NewScanner(f)
	for scanner.Scan() {
		var (
			text      = scanner.Text()
			fields    = strings.Split(text, " ")
			numFields = len(fields)
		)
		if numFields < 10 {
			return "", fmt.Errorf("mountinfo: bad entry %q", text)
		}
		if fields[numFields-3] == "cgroup" {
			return filepath.Dir(fields[4]), nil
		}
	}
	if err := scanner.Err(); err != nil {
		return "", err
	}
	return "", ErrMountPointNotExist
}