driver

Documentation

Index

• Constants
• Variables
• func CreateReadOnlyLayer(programUrl, containerID string) error
• func CreateWriteLayer(containerID string) error
• func DeleteVolumes(volumeURLs []string, layName string) error
• func DeleteWorkSpace(containerID string)
• func DeleteWriteLayer(containerID string)
• func Exec(argv0 string, argv []string, envv []string) (err error)
• func InitLog(sugar *zap.SugaredLogger)
• func NewParentProcess(tty bool, containerID, programUrl string, envSlice []string) (*exec.Cmd, *os.File)
• func NewPipe() (*os.File, *os.File, error)
• func NewWorkSpace(programUrl, containerID string)
• func PathExists(path string) (bool, error)
• func RunContainerInitProcess() error
• func UnmountOverlay(overlayDir string) error
• func WalkDir(path string, info os.FileInfo, err error) error

Constants

const (
	DefaultInfoLocation string = "/var/lib/gocker/%s/"
	ConfigName          string = "config.json"
	ContainerLogFile    string = "container.log"
	Dirver              string = "overlay"
	OverlayDir          string = "/var/lib/gocker/overlay/"
)

Variables

var Sugar *zap.SugaredLogger

Functions

func CreateReadOnlyLayer

func CreateReadOnlyLayer(programUrl, containerID string) error

创建只读的lower层 复制一份可执行文件过来 以及执行文件的动态链接库 TODO: 支持java等的语言

func CreateWriteLayer

func CreateWriteLayer(containerID string) error

创建并挂载 work,upper,merged

func DeleteVolumes

func DeleteVolumes(volumeURLs []string, layName string) error

func DeleteWorkSpace

func DeleteWorkSpace(containerID string)

删除容器overlay filesystem(仅保留lower层

func DeleteWriteLayer

func DeleteWriteLayer(containerID string)

从磁盘上删除overlay层 一定要先unmount后才进行删除！！！

func Exec

func Exec(argv0 string, argv []string, envv []string) (err error)

Exec invokes the execve(2) system call.

func InitLog

func InitLog(sugar *zap.SugaredLogger)

func NewParentProcess

func NewParentProcess(tty bool, containerID, programUrl string, envSlice []string) (*exec.Cmd, *os.File)

func NewPipe

func NewPipe() (*os.File, *os.File, error)

func NewWorkSpace

func NewWorkSpace(programUrl, containerID string)

创建一个overlay2的文件系统

func PathExists

func PathExists(path string) (bool, error)

判断文件/文件夹是否存在

func RunContainerInitProcess

func RunContainerInitProcess() error

这里的init函数是在容器内部执行的,进到这步的时候容器已经创建出来了 使用 mount 去挂载 proc 文件系统

func UnmountOverlay

func UnmountOverlay(overlayDir string) error

func WalkDir

func WalkDir(path string, info os.FileInfo, err error) error