Function HostDirFromRoot

core/remotes/docker/config/hosts.go:293–304

HostDirFromRoot returns a function which finds a host directory based at the given root.

(root string)

// HostDirFromRoot returns a function which finds a host directory
// based at the given root.
func HostDirFromRoot(root string) func(string) (string, error) {
	return func(host string) (string, error) {
		for _, p := range hostPaths(root, host) {
			if _, err := os.Stat(p); err == nil {
				return p, nil
			} else if !os.IsNotExist(err) {
				return "", err
			}
		}
		return "", errdefs.ErrNotFound
	}
}

// hostDirectory converts ":port" to "_port_" in directory names
func hostDirectory(host string) string {