kubernetes/vendor/github.com/opencontainers/runc/libcontainer/cgroups/file.go

// OpenFile opens a cgroup file in a given dir with given flags.
// It is supposed to be used for cgroup files only, and returns
// an error if the file is not a cgroup file.
//
// Arguments dir and file are joined together to form an absolute path
// to a file being opened.
func OpenFile(dir, file string, flags int) (*os.File, error) { … }

// ReadFile reads data from a cgroup file in dir.
// It is supposed to be used for cgroup files only.
func ReadFile(dir, file string) (string, error) { … }

// WriteFile writes data to a cgroup file in dir.
// It is supposed to be used for cgroup files only.
func WriteFile(dir, file, data string) error { … }

// WriteFileByLine is the same as WriteFile, except if data contains newlines,
// it is written line by line.
func WriteFileByLine(dir, file, data string) error { … }

const cgroupfsDir …

const cgroupfsPrefix …

var TestMode …

var cgroupRootHandle …

var prepOnce …

var prepErr …

var resolveFlags …

func prepareOpenat2() error { … }

func openFile(dir, file string, flags int) (*os.File, error) { … }

var errNotCgroupfs …

var openFallback …

// openAndCheck is used when openat2(2) is not available. It checks the opened
// file is on cgroupfs, returning an error otherwise.
func openAndCheck(path string, flags int, mode os.FileMode) (*os.File, error) { … }