kubernetes/vendor/github.com/opencontainers/runc/libcontainer/utils/utils.go

const exitSignalOffset …

// ExitStatus returns the correct exit status for a process based on if it
// was signaled or exited cleanly
func ExitStatus(status unix.WaitStatus) int { … }

// WriteJSON writes the provided struct v to w using standard json marshaling
// without a trailing newline. This is used instead of json.Encoder because
// there might be a problem in json decoder in some cases, see:
// https://github.com/docker/docker/issues/14203#issuecomment-174177790
func WriteJSON(w io.Writer, v interface{ … }

// CleanPath makes a path safe for use with filepath.Join. This is done by not
// only cleaning the path, but also (if the path is relative) adding a leading
// '/' and cleaning it (then removing the leading '/'). This ensures that a
// path resulting from prepending another path will always resolve to lexically
// be a subdirectory of the prefixed path. This is all done lexically, so paths
// that include symlinks won't be safe as a result of using CleanPath.
func CleanPath(path string) string { … }

// stripRoot returns the passed path, stripping the root path if it was
// (lexicially) inside it. Note that both passed paths will always be treated
// as absolute, and the returned path will also always be absolute. In
// addition, the paths are cleaned before stripping the root.
func stripRoot(root, path string) string { … }

// SearchLabels searches through a list of key=value pairs for a given key,
// returning its value, and the binary flag telling whether the key exist.
func SearchLabels(labels []string, key string) (string, bool) { … }

// Annotations returns the bundle path and user defined annotations from the
// libcontainer state.  We need to remove the bundle because that is a label
// added by libcontainer.
func Annotations(labels []string) (bundle string, userAnnotations map[string]string) { … }